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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended: June 30, 2004

OR

FOR THE TRANSITION PERIOD FROM              TO            

Commission File Number 0-23678

BIOSPHERE MEDICAL, INC.

(Exact Name of Registrant as Specified in its Charter)

1050 Hingham St., Rockland, Massachusetts 02370

(Address of Principal Executive Offices) (Zip Code)

(781) 681-7900

(Registrant’s Telephone Number, Including Area Code)

Indicate by a check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  x    NO  ¨

Indicate by a check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Exchange Act).    YES  ¨    NO  x

The number of shares outstanding of the Registrant’s Common Stock as of August 1, 2004 was 14,242,554 shares.

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BioSphere Medical, Inc.

INDEX

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PART I. FINANCIAL INFORMATION

BIOSPHERE MEDICAL, INC.

CONSOLIDATED CONDENSED BALANCE SHEETS

(In thousands, except share and per share data)

The accompanying notes are an integral part of these consolidated condensed financial statements.

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BIOSPHERE MEDICAL, INC.

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS

(In thousands, except per share data / unaudited)

The accompanying notes are an integral part of these consolidated condensed financial statements.

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BIOSPHERE MEDICAL, INC.

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS

(In thousands / unaudited)

The accompanying notes are an integral part of these consolidated condensed financial statements.

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BIOSPHERE MEDICAL, INC.

NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

A) Nature of Business

BioSphere Medical, Inc. (“we”, ”our”) was incorporated in Delaware in December 1993. During 1999, we strategically refocused our business on the development and commercialization of our proprietary Embosphere^® Microspheres and other ancillary embolotherapy products for use in treating uterine fibroids, hypervascularized tumors and arteriovenous malformations. Between February 1999 and November 2001, we acquired all ownership interests in Biosphere Medical S.A. (“BMSA”), a French societe anonyme. BMSA holds the license to the embolotherapy platform device that is the main focus of our business. In May 1999, we sold substantially all of our assets relating to our former core business, chromatography, and changed our name from BioSepra, Inc. to BioSphere Medical, Inc.

We believe that existing working capital, together with anticipated sales proceeds from our microspheres and other medical device products, will provide liquidity sufficient to allow us to meet our expected spending obligations into the first quarter of 2005, while also allowing the further development and testing of other product candidates and technologies. We are currently evaluating various financing arrangements to fund operations beyond the first quarter of 2005. These arrangements may not be available to us on favorable terms, or at all, and if such arrangements are not available, we could be required to defer or limit some or all of our planned sales, marketing, research, development and/or clinical expenditures.

B) Basis of Presentation

The accompanying consolidated condensed financial statements are unaudited and have been prepared on a basis consistent with our annual audited financial statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2003. The consolidated condensed financial statements include the accounts of our, and our three wholly owned subsidiaries, BMSA, Biosphere Medical Japan, Inc. and BSMD Ventures, Inc. All material inter-company balances and transactions have been eliminated in consolidation. Certain information and footnote disclosures normally included in our annual audited financial statements have been condensed or omitted. The consolidated condensed financial statements, in the opinion of management, reflect all adjustments (including normal recurring adjustments) necessary for a fair statement of the results for the three and six months ended June 30, 2004 and 2003. The results of operations for the periods presented are not necessarily indicative of the results of operations to be expected for the entire fiscal year. These consolidated condensed financial statements should be read in conjunction with the audited financial statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2003.

C) Cash, Cash equivalents and Marketable Securities

We consider all highly liquid investments with an original maturity of ninety days or less, as of the date of purchase, to be cash equivalents. In accordance with our investment policy, surplus cash is invested in investment grade corporate and U.S. government debt as well as certain asset backed securities. We determine the appropriate classification of marketable securities at each balance sheet date. Available-for-sale marketable securities are carried at their fair value with unrealized gains and losses included in accumulated other comprehensive income (loss) in the accompanying balance sheet.

D) Comprehensive Loss

Comprehensive loss is comprised of net loss and other comprehensive income. Other comprehensive income includes certain changes in equity that are excluded from net loss, specifically, the effects of foreign currency translation adjustments and any unrealized gains or losses on available for sale securities, that are reflected separately in accumulated other comprehensive income as stockholders’ equity. For the three and six months ended June 30, 2004 and 2003, our comprehensive loss was as follows:

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BIOSPHERE MEDICAL, INC.

NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

E) Net Loss Per Share

Basic net loss per share is calculated based on the weighted average number of common shares outstanding during the period. Diluted net loss per share incorporates the dilutive effect of common stock equivalent options and warrants. Common stock equivalents, as determined in accordance with the treasury-stock method, equaled 2,658,250 and 2,548,430 as of June 30, 2004 and 2003, respectively. The average price of BioSphere Medical common stock used in determining common stock equivalents equaled $3.94 and $5.42 as of June 30, 2004 and 2003, respectively. Total common stock options and warrants outstanding as of June 30, 2004 and 2003 equaled 2,744,000 and 3,941,000, respectively. Common stock equivalents have been excluded from the calculation of weighted average number of diluted common shares, as their effect would be anti-dilutive for all periods presented.

F) Impairment of Long-Lived Assets

We evaluate the potential impairment of our long-lived assets, including goodwill, to determine whether events or changes in circumstances may indicate that the carrying amount of a recorded asset may not be recoverable. Based on management’s assessment as of December 31, 2003, we have determined that no impairment of long-lived assets exists.

2. INVENTORIES

Inventories are stated at the lower of cost (first-in, first-out) or market and consist of the following as of:

Included in inventory is an excess and obsolete product valuation allowance for finished goods of $557,000 and $519,000 as of June 30, 2004 and December 31, 2003, respectively. Also included in inventory is a reserve for work in progress of $913,000 and $0 as of June 30, 2004 and December 31, 2003, respectively. The work in progress reserve represents in process EmboGold Microspheres and Embosphere Microspheres inventory that was produced prior to the recent implementation of an improved manufacturing process in our facility in France and which we have elected to discard.

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BIOSPHERE MEDICAL, INC.

NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

3. SEGMENT AND GEOGRAPHIC DATA

We develop our microspheres and other accessory embolotherapy products for use in the treatment of uterine fibroids, hypervascularized tumors and arteriovenous malformations. We operate exclusively in the medical device business, which we consider as one business segment. Operations are primarily conducted in two geographic regions: North America and Europe. Operations by geographic region for the three months and six months ended June 30, 2004 and 2003 are as follows:

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BIOSPHERE MEDICAL, INC.

NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

4. STOCK COMPENSATION

We apply the principles of APB Opinion No. 25 “Accounting for Stock Issued to Employees”, and related interpretations in accounting for our stock incentive plans. Under APB No. 25, compensation expense is measured as the difference, if any, between the option exercise price and the fair value of our common stock at the date of grant. We have historically granted options to employees and directors at exercise prices equal to the fair value of our common stock. Accordingly, no compensation expense has been generally recognized under APB No. 25 for our employee stock-based compensation plans.

SFAS No. 123, “Accounting for Stock-Based Compensation”, as amended, establishes a fair value based approach for valuing stock options. We follow the disclosure-only alternative afforded by SFAS No. 123. Had compensation expense for stock options issued to employees and directors been determined based on the estimated fair value at the grant dates as calculated in accordance with SFAS No. 123, our reported net loss and basic and diluted net loss per common share for the three months and six months ended June 30, 2004 and 2003 would have been adjusted to the pro forma amounts indicated below:

The foregoing calculations were made using the Black-Scholes option-pricing model. The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. In addition, option-pricing models require the use of highly subjective assumptions, including the expected stock price volatility. Because our employee stock options have characteristics significantly different from those of traded options, and, because changes in the subjective assumptions can materially affect the fair value estimates, in management’s opinion the existing models do not necessarily provide a reliable single measure of the fair value of the employee stock-based compensation.

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BIOSPHERE MEDICAL, INC.

NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS (Continued)

5. CONTINGENCIES

On January 27, 2003, our French subsidiary, BioSphere Medical, S.A., received notice from Terumo Europe, N.V. that Terumo had initiated legal proceedings in the Commercial Court of Pontoise, France alleging that it suffered damages from a purported termination of the distribution contract by BioSphere Medical, S.A. BioSphere Medical, S.A. and Terumo Europe entered into a distribution agreement in January 2002 pursuant to which Terumo Europe became the exclusive distributor of Embosphere Microsphere and EmboGold Microsphere products in certain countries of Europe. The case continues to remain pending before the Commercial Court of Pontoise, France. It is not possible at this time to make a reasonable assessment as to the final outcome of this proceeding. No provision for any possible loss from such litigation has been provided for in the accompanying financial statements. We strongly believe that Terumo’s allegations are without merit and we intend to vigorously defend against the claims Terumo has made.

We do not have US Food and Drug Administration, or FDA, clearance to market our EmboGold Microspheres for use in the treatment of uterine fibroids, and determined in 2003 not to seek such approval. We made this decision because of reports that a small number of the patients treated with UFE using EmboGold Microspheres, which we believe constitute approximately 2% of the total number of patients receiving the procedure, reported a delayed onset of pain and/or rash. If we cease to market EmboGold MicroSpheres for any reason, we could incur substantial costs to write off and replace existing inventories. As of June 30, 2004, we had EmboGold Microspheres inventory with a carrying value of $519,000, including in process inventory of $291,000 and finished goods syringes of $228,00. We currently believe no provision for the write off or replacement of EmboGold Microspheres inventory is required in the accompanying financial statements.

We will continue to incur costs in connection with replacing syringes containing our microspheres products because of shelf life limitations of the saline solution contained within the syringes. We have informed our customers of these shelf life limitations, and have advised them to contact us regarding product replacement of their syringes. These costs may be in excess of those currently reserved for product obsolescence, excess inventory, warranty claims and product returns. For the six-month period ended June 30, 2004, we have recognized $223,000 in costs of product sales related to product replacement for shelf life limitations.

6. REVENUE RECOGNITION POLICY

We comply with the revenue recognition guidelines summarized in Staff Accounting Bulletin (SAB) No. 101, “Revenue Recognition in Financial Statements,” as updated by SAB No. 104 “Revenue Recognition, corrected copy.” We recognize revenue when products are shipped and the customer takes ownership and assumes risk of loss, collection of the relevant receivable is probable, persuasive evidence of an arrangement exists (a valid purchase order from an approved customer), and the sales price is fixed. We establish reserves for potential sales returns and evaluate, on a monthly basis, the adequacy of those reserves based upon realized experience. Under our current policy, only those products on a customer’s initial order qualify for product satisfaction-related credit returns. To date, returns related to product satisfaction have been minimal and immaterial. While such returns have historically been within our expectations and the provisions established, we cannot guarantee that we will continue to experience the same return rates that we have in the past. Any significant change in product satisfaction and any resulting credit returns could have a material adverse impact on our operating results for the period or periods in which such returns materialize.

In June of 2004, we entered into an agreement with a third party, granting it an exclusive five-month development agreement for the use of Embosphere MicroSpheres for gastroesophegael reflex disease, or GERD. In exchange for this agreement, we received $100,000. We recognized $20,000 as licensing revenue in the six months ended June 30, 2004, and the remaining funds are included as part of deferred licensing revenue on the balance sheet. The deferred licensing revenue will be recognized as revenue over the life of the contract.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

The following discussion of our financial condition and results of operations should be read in conjunction with our consolidated condensed financial statements and the related notes included elsewhere in this report.

Overview

We develop, manufacture and market products for medical applications using embolotherapy techniques. Our core technologies, consisting of patented bio-engineered polymers and manufacturing methods, are used to produce miniature spherical beads with unique properties for a variety of applications. Embolotherapy works by reducing blood flow to targeted areas of the body. The procedure is performed by injecting particles through a catheter into the blood vessels that feed these target areas. By selectively blocking the target tissue’s blood supply, the deprived tissue will either become destroyed or devitalized, resulting in therapeutic benefit.

We generate revenues primarily from product sales of our Embosphere Microspheres and EmboGold Microspheres in North America. To a lesser extent, we also generate revenues from product sales in Europe and other geographic territories including the Middle East, Africa, South America, and the Far East. Product revenues also include the sale of accessory embolotherapy devices such as our EmboCath Catheter and our Segway Guidewire, as well as our other non-embolotherapy products, including barium and other ancillary medical devices. We derived a majority of our revenues in the United States for the three and six month periods ended June 30, 2004 and 2003 from the sale of Embosphere Microspheres and EmboGold Microspheres for use in uterine fibroid embolization, or UFE.

In April 2000, we received clearance from the United States Food and Drug Administration, or FDA, for the use of Embosphere Microspheres in the embolization of hypervascularized tumors and arteriovenous malformations. In November 2002, we received additional clearance from the FDA to market our Embosphere Microspheres for use in treating symptomatic uterine fibroids. We do not have FDA clearance to market our EmboGold Microspheres for use in the treatment of uterine fibroids, and we determined in 2003 not to seek such approval at this time. We made this decision because of reports that a small number of the patients treated with UFE using EmboGold Microspheres, which we believe constitute approximately 2% of the total number of patients receiving the procedure, reported a delayed onset of pain and/or rash. If we cease to market EmboGold MicroSpheres for any reason, we could incur substantial costs to write off and replace existing inventories. As of June 30, 2004, we had EmboGold inventory with a carrying value of $519,000, including in process inventory of $291,000 and finished goods syringes of $228,00. We currently believe no provision for the write off or replacement of EmboGold Microspheres inventory is required in the accompanying financial statements.

We received CE mark approval of our Embosphere Microspheres product in the European Union in 1997. CE mark approval is a certification granted by European regulatory bodies, or by some manufacturers with satisfactory quality systems, that substantiates the compliance of products with specific standards of quality and/or safety. This approval is generally required prior to the commercialization of a medical device in the European Union. In January 2000, we received marketing approval of our Embosphere Microspheres product in Australia and Canada.

Our principal focus is on growing our Embosphere Microsphere business worldwide, which we believe will be a key driver to our success. Our marketing strategy is to promote UFE through our ASK4UFE^™ awareness and education program and also to specifically promote our Embosphere Microspheres as the treatment of choice for UFE. We have not yet received widespread market acceptance of the UFE procedure. Our success will depend upon the acceptance by the medical community, patients and third party payers of the UFE procedure as safe, medically therapeutic and cost effective.

We have experienced operating losses in each fiscal period since our inception. As of June 30, 2004, we had approximately $4.66 million in cash, cash equivalents and marketable securities and an accumulated deficit of approximately $72.39 million. Most of our expenditures to date have been for sales and marketing activities, general and administrative costs and research and development activities. We expect to experience continued operating losses until at least the fourth quarter of 2004 as we execute our business plan, including continuing to establish sales and marketing capabilities and conducting research and development activities. We believe that our existing cash and other working capital will be sufficient to fund our operating and capital requirements, as currently planned, into the first quarter of 2005. We are currently evaluating various financing arrangements to fund operations beyond the first quarter of 2005. These arrangements may not be available to us on favorable terms, or at all, and if such arrangements are not available, we could be required to defer or limit some or all of our planned sales, marketing, research, development and/or clinical expenditures.

Research and Development

The following table identifies each of our major products and product candidates and the current development phase of each program.

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Research and development expenses relate primarily to:

Total research and development expenses were $619,000 or 11% of total costs and expenses, and $819,000 or 14% of total costs and expenses for the three months ended June 30, 2004 and 2003. For the six-month periods ended June 30, 2004 and 2003, research and development expenses were $1,208,000 or 12% of total costs and expenses, and $1,526,000 or 14% of total costs and expenses, respectively. Our research and development personnel typically work on a number of projects concurrently. In addition, a substantial amount of fixed research and development costs such as salary and salary-related benefits, rent, equipment depreciation, utilities, insurance and maintenance are shared among various programs. Accordingly, we have not historically tracked specific costs for each of our research and development projects.

There is a risk that any medical device development program may not produce revenue. Moreover, because of uncertainties inherent in medical device development, including those factors described below under “Certain Factors That May Affect Future Results of Operations,” we may not be able to successfully develop and commercialize any of the product candidates included in the table above.

As described in the table above, we are seeking CE mark approval for our Hepasphere SAP Microspheres in the European Union. We have exclusive worldwide rights to the Hepasphere SAP Microspheres technology under a license from Dr. Shinichi Hori, subject only to Dr. Hori’s right to conduct clinical trials on our behalf in Japan, treat patients at Rinku Medical Center and Osaka Medical Center in Japan and engage in research at Osaka University. Currently, Dr. Hori is conducting research and treating patients with the Hepasphere SAP Microspheres in Japan. Our TempRx Microspheres and Radiosphere Microspheres product development initiatives are in preclinical evaluation. The successful development of these early-stage product candidates is highly uncertain. We cannot reasonably estimate or know the nature, timing and estimated costs of the efforts necessary to complete the development of, or the period in which material net cash inflows are expected to commence from, any of our product candidates due to the numerous risks and uncertainties associated with developing medical devices, including uncertainties relating to:

Any failure to complete the development of our product candidates in a timely manner could have a material adverse effect on our operations, financial position and liquidity. A discussion of the risks and uncertainties associated with completing our projects on schedule, or at all, and some consequences of failing to do so, are set forth below in “Certain Factors That May Affect Future Results of Operations.”

CRITICAL ACCOUNTING POLICIES

The discussion and analysis of our financial condition and results of operations are based upon our consolidated condensed financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets and liabilities, revenues and expenses, and related disclosure at the date of our financial statements. The significant accounting policies which we believe are most critical in gaining an understanding of our financial statements include policies and judgments relating to revenue recognition, accounts receivable, inventories and deferred taxes. Actual results could differ materially from these estimates. There were no material changes in our judgments or estimates during the first six months of 2004. For a more detailed explanation of the judgments made in these areas, refer to Management’s Discussion and Analysis of Financial Condition and Results of Operations within our Annual Report on Form 10-K for the year ended December 31, 2003, which is on file with the Securities and Exchange Commission.

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RESULTS OF OPERATIONS

THREE MONTHS ENDED JUNE 30, 2004 AND 2003

Revenues. Total revenues increased to $3.23 million for the three-month period ended June 30, 2004 from $3.12 million for the same period in 2003, an increase of $110,000, or 3.5%. Product sales increased to $3.21 million for the three-month period ended June 30, 2004 from $3.12 million for the three-month period ended June 30, 2003. The $84,000, or 2.7%, increase in product sales was primarily due to higher worldwide market acceptance of our Segway guidewire and Embocath catheter product lines, which amounted to $90,000 in additional revenue. Also contributing to the increase in total revenues for the three-month period ended June 30, 2004 from the three-month period ended June 30, 2003, was $20,000 of licensing revenue. The licensing revenue derived from an agreement entered into with a third party in June of 2004 for the development of Embosphere Microspheres for use in the prevention of gastroesophageal reflex disease; or GERD. In exchange for $100,000, we granted this third party a five-month exclusive development agreement for Embosphere Microspheres for GERD. We will recognize the remaining $80,000 of revenue over the life of this contract.

The majority of our revenues in the second quarter of 2004 and 2003, respectively, were derived from the sale of Embosphere Microspheres. As a result of our strategic focus on UFE and other embolotherapy applications using our microsphere products, we expect that sales of our Embosphere Microspheres and our ancillary embolotherapy delivery systems will continue to account for a substantial portion of our revenues in 2004.

Costs of Product Sales. Costs of product sales for the three-month period ended June 30, 2004 were $2.29 million compared with $1.23 million for the same period in 2003. The $1.1 million, or 89%, increase was primarily due to the following factors:

Gross Margin. Gross margin for the three-month period ended June 30, 2004 decreased $952,000, or 50%, from $1.89 million, or 61%, of product sales in the three-months ended June 30, 2003 to $938,000, or 29% of product sales. The decrease was primarily attributable to the additional costs related to the write-off of in process inventory and expenses associated with product replaced as a result of shelf life limitations discussed above, offset partially by increased product sales. We expect future gross margin will be highly correlated to the following factors:

Research and Development Expense. Total research and development expenses in the three-month period ended June 30, 2004 decreased to $619,000 from $819,000 in the same period in 2003. The $200,000, or 24%, decrease in the three months ended June 30, 2004 was primarily due to a reduction in non-essential headcount after the completion of development related projects in 2003. Total clinical costs were $45,000 and $62,000 for the three-month periods ended June 30, 2004 and 2003, respectively. We anticipate that our research and development expenses through the next several quarters will not increase above current amounts.

Sales Expense. Sales expense for the three-month period ended June 30, 2004 decreased to $1.12 million from $1.33 million in the same period in 2003. The $210,000, or 16%, decrease in the three months ended June 30, 2004 was primarily the result of the elimination of certain headcount in the field in the United States. Sales expense is expected to grow consistent with realized growth in worldwide product sales.

Marketing Expense. Marketing expense for the three-month period ended June 30, 2004 decreased to $652,000 from $1.50 million in the same period in 2003. The $847,000, or 57% decrease was primarily due to a reduction in expenses relating to awareness and education programs associated with promoting the UFE procedure through our ASK4UFE campaign as well as promoting EmboSphere Microspheres as the treatment of choice for uterine fibroids. We expect that marketing expenses will increase in the foreseeable future as we seek to continue our aggressive effort to promote (i) UFE awareness as an alternative to hysterectomy and (ii) EmboSphere Microspheres as a uniquely beneficial product in UFE procedures.

General and Administrative Expense. General and administrative expenses for the three-month period ended June 30, 2004 decreased to $714,000 from $966,000 for the comparable period in 2003. The $252,000, or 27%, decrease was primarily due to decreased payroll and related expenses as a result of the elimination of certain administrative personnel in the United States and Europe.

Interest and Other Income, net. Interest and other income, net, in the three-month period ended June 30, 2004 was ($76,000), compared to $182,000 in the comparable period in 2003. The $258,000 or, 142%, decrease in interest and other income was primarily due to realized foreign currency losses as the U.S. dollar increased 5% against the Euro, and to smaller balances in our investment accounts.

SIX MONTHS ENDED JUNE 30, 2004 AND 2003

Revenues. Total revenues increased to $6.41 million for the six-month period ended June 30, 2004 from $6.17 million for the same period in 2003, an increase of $234,000, or 3.8%. Product sales increased to $6.39 million for the six months ended June 30, 2004 from $6.17 million for the six months ended June 30, 2003. The $220,000, or 3.6%, increase in product sales was primarily due to the $208,000 impact of foreign currency translation adjustments, and higher worldwide market acceptance of our Segway guidewire and Embocath catheter product lines, which amounted to $68,000 in additional revenue. Also contributing to the increase in total revenues for the six-month period ended June 30, 2004 from the six-month period ended June 30, 2003, was $20,000 of licensing revenue. The licensing revenue derived from an agreement entered into in June of 2004 with a third party for the development of Embosphere Microspheres for use in the prevention of GERD. In exchange for $100,000, we granted this third party a five-month exclusive development agreement of Embosphere MicroSpheres for GERD. We will recognize the remaining $80,000 of revenue over the life of this contract. Offsetting these increases was a $143,000 decrease in Embosphere MicroSpheres sales in the United States in the six-month period ended June 30, 2004, as compared to the six-month period ended June 30, 2003.

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The majority of our revenues in the first six months of 2004 and 2003, respectively, was derived from the sale of Embosphere Microspheres. As a result of our strategic focus on UFE and other embolotherapy applications using our microsphere products, we expect that sales of our Embosphere Microspheres and our ancillary embolotherapy delivery systems will continue to account for a substantial portion of our revenues in 2004.

Costs of Product Sales. Costs of product sales for the six-month period ended June 30, 2004 were $3.85 million compared with $2.26 million for the same period in 2003. The $1.6 million, or 71%, increase was primarily due to the following factors:

Gross Margin. Gross margin for the six months ended June 30, 2004 decreased $1.35 million, or 35%, from $3.91 million, or 63%, of product sales in the six months ended June 30, 2003 to $2.56 million, or 40%, of product sales. The decrease was primarily attributable to the additional costs related to the write-off of in process inventory, expenses associated with the product replaced due as a result of shelf life limitations, and the increased reserve for finished goods syringes discussed above, offset partially by increased sales of catheters and guidewires. We expect future gross margin will be highly correlated to the following factors:

Research and Development Expense. Total research and development expenses in the six-month period ended June 30, 2004 decreased to $1.21 million from $1.53 million in the same period in 2003. The $320,000, or 21%, decrease in the six months ended June 30, 2004 was primarily due to a reduction in payroll and related expenses as a result of a reduction in non-essential personnel after the completion of development related projects in 2003. Total clinical costs were $104,000 and $155,000 for the six-month periods ended June 30, 2004 and 2003, respectively. We anticipate that our research and development expenses through the next several quarters will not increase above current levels.

Sales Expense. Sales expense for the six-month period ended June 30, 2004 decreased to $2.34 million from $2.76 million in the same period in 2003. The $420,000, or 15%, decrease in the six months ended June 30, 2004 was primarily the result of the elimination of certain headcount in the field in the United States. Sales expense is expected to grow consistent with realized growth in worldwide product sales.

Marketing Expense. Marketing expense for the six-month period ended June 30, 2004 decreased to $1.12 million from $2.79 million in the same period in 2003. The $1.67 million, or 60% decrease was primarily due to a reduction in expenses relating to awareness and education programs associated with promoting the UFE procedure through our ASK4UFE campaign as well as promoting Embosphere Microspheres as the treatment of choice for uterine fibroids. We expect that marketing expenses will increase in the foreseeable future as we seek to continue our aggressive effort to promote (i) UFE awareness as an alternative to hysterectomy and (ii) Embosphere Microspheres as a uniquely beneficial product in UFE procedures.

General and Administrative Expense. General and administrative expenses for the six-month period ended June 30, 2004 decreased to $1.52 million from $1.83 million for the comparable period in 2003. The $310,000, or 17%, decrease was primarily due to the elimination of certain administrative headcount in the United States and Europe.

Interest and Other Income, net. Interest and other income, net, in the six-month period ended June 30, 2004 was ($169,000), compared to $266,000 in the comparable period in 2003. The $435,000 or, 164%, decrease in interest and other income was primarily due to realized foreign currency losses as the U.S. dollar increased 5% against the Euro, and to smaller balances in our investment accounts.

LIQUIDITY AND CAPITAL RESOURCES

We have historically funded our operations from net proceeds provided from public and private equity offerings, funds provided by the sale of our former chromatography business, funds provided by a significant stockholder, Sepracor Inc., bank financings, equipment lease financing and, to a lesser extent, exercises of stock options. As of June 30, 2004, we had $4.66 million in cash, cash equivalents and marketable securities, as well as $7.72 million in working capital.

For the six months ended June 30, 2004, we used $3.56 million in operating cash primarily to fund our sales, marketing and product research and development activities, as well as to finance working capital requirements, particularly in the U.S. Cash used in operations is expected to decrease as anticipated increases in product sales are expected to partially offset our operational and product development expenditures.

Net cash provided by investing activities was $2.26 million for the six months ended June 30, 2004, primarily from transfers of investments to cash to fund current operational needs. Net cash provided by financing activities was $646,000 for the six months ended June 30, 2004, most of which constituted proceeds from the exercise of stock options and capital equipment lease lines.

In March 2001, our wholly-owned French subsidiary, Biosphere Medical, SA, or BMSA, entered into a €152,450 ($185,000 equivalent as of March 31, 2004) term loan with a French national bank that is payable in Euros over four years and accrues interest at 5.4% per annum. The total loan balance outstanding as of June 30, 2004 was approximately €26,000, or $31,000.

In May 2002, we entered into a two-year credit facility with a bank under which we could borrow, subject to limitations defined in the agreement, up to $5.0 million for general working capital and corporate purposes.

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There were no borrowings outstanding under this agreement as of June 30, 2004. Each available 30, 60, 90 or 180-day advance bore interest at a per annum rate, at our option, equal to either (i) a variable rate as determined by the bank or (ii) a rate equal to the corresponding 30, 60, 90 or 180-day LIBOR rate (1.70% as of June 30, 2004) plus a LIBOR advance rate spread as determined by certain current working capital balances at the time of the advance. In connection with the credit facility, we entered into a security agreement pursuant to which we have pledged to the bank all of our U.S. assets, excluding our equity ownership of BMSA, as collateral. This credit facility expired on May 1, 2004. We have entered into a term sheet with the bank to negotiate terms and conditions of a new credit facility. The term sheet provides that the new credit facility will contain all of the terms and conditions of our original credit facility, with two exceptions, 1) the amount of the facility will be reduced to $3.0 million from $5.0 million and 2) the term of the credit line will be reduced from two years to one year. We cannot be certain that we will enter into a new credit facility with the bank.

We believe that our existing cash and other working capital, including the approximate $4.66 million in cash, cash equivalents and marketable securities that we have as of June 30, 2004, will be sufficient to fund our operating and capital requirements, as currently planned, into the first quarter of 2005. We are currently evaluating various financing arrangements to fund operations beyond the first quarter of 2005. These arrangements may not be available to us on favorable terms, or at all, and if such arrangements are not available, we could be required to defer or limit some or all of our planned sales, marketing, research, development and/or clinical expenditures.

CONTRACTUAL OBLIGATIONS

On February 28, 2004, we entered into a four-year capital lease agreement for the purchase of manufacturing equipment at our facility in Roissy, France. The amount of the lease was for $165,000, payable over 48 months, at an effective annual interest rate of 4.64%. As of June 30, 2004, there was $151,000 outstanding under this capital lease agreement.

On March 25, 2004, we entered into retention agreements with our executive management team. In the event of a change in control of our company through merger or acquisition, or a change in the majority of our existing Board of Directors, the retention agreements allow for, among other things, the following benefits:

OFF BALANCE SHEET ARRANGEMENTS

We do not have any material off-balance sheet arrangements.

INFLATION

We believe that the effects of inflation generally do not have a material adverse impact on our operations or financial condition

CERTAIN FACTORS THAT MAY AFFECT FUTURE RESULTS OF OPERATIONS

This Quarterly Report on Form 10-Q contains, in addition to historical information, forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, or, the Exchange Act, including information with respect to timing and likelihood or regulatory approval of products under development, market acceptance of our products and expected results of operations. These forward-looking statements involve risks and uncertainties and are not guarantees of future performance. Our actual results could differ significantly from the results discussed in such forward-looking statements due to a number of important factors, including those set forth below. You should carefully consider each of these risks and uncertainties in evaluating our business, financial condition and results of operations. The forward-looking information provided herein represents our estimates as of the date of this report. Subsequent events and developments may cause these estimates to change. We caution you that we specifically disclaim any obligation to update this forward-looking information in the future.

RISK RELATING TO OUR FUTURE PROFITABILITY

BECAUSE WE HAVE A HISTORY OF LOSSES AND OUR FUTURE PROFITABILITY IS UNCERTAIN, OUR COMMON STOCK IS A SPECULATIVE INVESTMENT

We have incurred operating losses since our inception and, as of June 30, 2004, had an accumulated deficit of approximately $72.39 million. We expect to spend substantial funds to continue research and product testing, to maintain sales, marketing, quality control, regulatory, manufacturing and administrative capabilities and for other general corporate purposes. We expect to continue to incur operating losses until at least the fourth quarter of 2004, as we continue our commercialization efforts. If we are unable to maintain expected cost and expense levels and/or increase sales, then our operating losses may extend beyond the fourth quarter of 2004.

We may never become profitable. If we do become profitable, we may not remain profitable on a continuing basis. Our failure to become and remain profitable would depress the market price of our common stock and impair our ability to raise capital and expand, diversify or continue our operations.

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RISKS RELATING TO OUR FINANCIAL RESULTS AND NEED FOR FINANCING

WE WILL CONTINUE TO NEED ADDITIONAL FUNDS, AND IF ADDITIONAL CAPITAL IS NOT AVAILABLE, WE MAY HAVE TO LIMIT, SCALE BACK OR CEASE OUR OPERATIONS

We estimate that our existing cash and other working capital will be sufficient to fund our operating and capital requirements, as currently planned, into the first quarter of 2005. To continue our operations beyond the first quarter of 2005 and to fund the additional costs we expect to incur, we will need to raise substantial additional funds through additional public or private sales of equity, through borrowings, or through other financings. There is no assurance that we will be able to obtain any additional funds on acceptable terms.

Our cash requirements may vary materially from those now planned due to a number of factors, including, without limitation, the amount of revenues we generate from sales of our products, in particular from the use of our Embosphere Microspheres for UFE, changes in our UFE regulatory and marketing programs, anticipated research and development efforts, cost and time involved in pre-clinical and clinical testing, costs resulting from changes in the focus and direction of our research and development programs, competitive advances that make it harder for us to market and sell our products, the timing and cost of FDA regulatory review and the market’s acceptance of any approved products.

We also expect to incur additional costs related to ongoing research and development activities, pre-clinical studies, clinical trials, the expansion of our manufacturing, laboratory and administrative functions, as well as costs relating to further market development and commercialization efforts. We may also need additional funds for possible strategic acquisitions of synergistic businesses, products and/or technologies. If adequate funds are not available, we may be required to delay, scale back or eliminate some of our research, development, sales and marketing initiatives, which would have a material adverse effect on our business, results of operations and ability to achieve profitability.

We will need to raise additional funds to develop and commercialize our products successfully. If we cannot raise more funds, we could be required to reduce our capital expenditures, scale back our product development, reduce our workforce and license to others products or technologies that we otherwise would seek to commercialize ourselves. Although we may seek additional funding through collaborative arrangements, borrowing money or the sale of additional equity securities, we may not receive additional funding on reasonable terms, or at all. Any sales of additional shares of our capital stock are likely to dilute our existing stockholders.

Further, if we issue additional equity securities, the new equity securities may have rights, preferences or privileges senior to those of existing holders of our common stock. Alternatively, we may borrow money from commercial lenders, possibly at high interest rates, which will increase the risk of your investment in us.

IF OPERATING RESULTS FLUCTUATE SIGNIFICANTLY FROM QUARTER TO QUARTER, THEN OUR STOCK PRICE MAY DECLINE

Our operating results could fluctuate significantly from quarter to quarter. These fluctuations may be due to several factors, including the timing and volume of customer orders for our products, procedure cancellations, introduction or announcement of competitive products and general economic conditions. We also expect that our operating results will be affected by seasonality. We expect our revenue growth to subside in the third quarter of each year from the first two quarters of each year because we do a significant percentage of our business in the European Union, which typically experiences a slowdown of business during the summer months. Due to these fluctuations, our operating results in some quarters may not meet the expectations of our investors. In that case, our stock price may decline.

In addition, a large portion of our expenses, including expenses for facilities, equipment and personnel, are relatively fixed. Accordingly, if our revenues decline or do not grow as much as we anticipate, we might not be able to improve our operating margins. Failure to achieve anticipated levels of revenues could therefore significantly harm our operating results for a particular fiscal period.

RISKS RELATING TO OUR INDUSTRY, BUSINESS AND STRATEGY

IF WE DO NOT ACHIEVE WIDESPREAD MARKET ACCEPTANCE OF OUR MICROSPHERES PRODUCTS, OUR BUSINESS PROSPECTS WILL BE SERIOUSLY HARMED

Our microspheres are based on new technologies and therapeutic approaches. In the United States, we began selling our microspheres product in the first half of 2000. In November 2002, we received FDA clearance to market our Embosphere Microspheres in the United States for specific use in the embolization of uterine fibroids. To date we have not achieved widespread market acceptance of our Embosphere Microspheres or other products. Our success will depend upon the medical community’s, patients’ and third-party payers’ increasing acceptance of our Embosphere Microspheres and other products as medically therapeutic and cost-effective. Our future success will also depend upon obstetrics and gynecology physicians referring patients to interventional radiologists to receive treatment using our Embosphere Microspheres in lieu of, or in addition to, receiving other forms of treatment that the obstetrics and gynecology physicians can otherwise provide directly.

Negative publicity associated with any adverse medical effects attributed to embolization treatments generally, or our products specifically, may create the market perception that our products are unsafe. For example, patients commonly experience a day or two of post-procedure abdominal pain or cramping. Other infrequently occurring complications may include allergic reactions, rashes, early onset of menopause, infertility and infection that may, in some cases, require a hysterectomy. We are also aware that a small number of the patient population, which we believe constitute approximately 2% of those receiving the UFE procedure, using EmboGold Microspheres, reported a delayed onset of pain and/or rash.

Our microspheres are designed to permanently occlude blood vessels. There is some risk that some or all of the microspheres used in a medical procedure may travel in the blood system to sites other than the intended surgical site and occlude, or block, other blood vessels, resulting in the potential for significant adverse health effects on the patient or, in a worst case, even death. Moreover, to use our microspheres correctly for a particular medical procedure, trained physicians must select and use the proper size and quantity. A physician’s selection and use of the wrong size or quantity of our microspheres could potentially have significant adverse health effects on the patient, including death. It will be necessary for us to spend significant amounts of money and allocate management resources to educate physicians about the selection and use of the proper size and quantity of microspheres in patient therapy. In addition, there is only limited data concerning the long-term

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health effects on persons receiving embolotherapy using our microspheres. For example, the effect of uterine fibroid embolization on continued fertility has not yet been specifically studied and our FDA clearance for Embosphere Microspheres currently does not include women who intend future pregnancy.

If we are not able to successfully educate physicians to properly use our product, or if the market determines or concludes that any of our products are not safe or effective for any reason, we may be exposed to product liability claims, product recalls, fines or other penalties or enforcement actions by regulatory agencies and associated adverse publicity. In addition, we have provided to our customers a satisfaction guarantee that requires us to accept the return of any inventory and credit the entire amount of the original order if a properly trained customer is not satisfied with the performance of either our microspheres or our EmboCath catheter products. If we experience adverse publicity or are subject to product liability claims, excessive guarantee claims, recalls, fines and the like, we will be unable to achieve widespread market acceptance of our microsphere products and achieve profitability.

IF WE DO NOT SUCCESSFULLY MARKET AND PROMOTE OUR EMBOSPHERE MICROSPHERES FOR USE IN UTERINE FIBROID EMBOLIZATION, OUR PRODUCT REVENUES WILL NOT INCREASE.

In the first quarter of 2003, we launched our ASK4UFE campaign to increase awareness among patients, referring physicians, interventional radiologists and third party payers of UFE as an alternative treatment for fibroids. To date, we believe that only a very small segment of the population is familiar with the treatment option. We believe the majority of our revenues in the United States for the year ended December 31, 2003 and for the six months ended June 30, 2004 was derived from the sale of Embosphere Microspheres and EmboGold Microspheres, for use in UFE. Although we believe that EmboGold Microspheres accounted for a significant portion of revenue, we currently do not intend to seek 510(k) clearance for use of EmboGold Microspheres in UFE. Because we do not intend to seek 510(k) clearance of EmboGold Microspheres, we believe that our future product revenues are substantially dependent on our ability to achieve awareness of the use of Embosphere Microspheres for the treatment of UFE, and if we do not achieve increased awareness, our product revenues profitability and success will be adversely affected. If we cease to market EmboGold MicroSpheres for any reason, we could incur substantial costs to write off and replace existing inventories. As of June 30, 2004, we had EmboGold inventory with a carrying value of $519,000, including in process inventory of $291,000 and finished goods syringes of $228,00. We currently believe no provision for the write off or replacement of EmboGold Microspheres inventory is required in the accompanying financial statements.

IF WE EXPERIENCE DELAYS, DIFFICULTIES OR UNANTICIPATED COSTS IN ESTABLISHING THE SALES, DISTRIBUTION AND MARKETING CAPABILITIES NECESSARY TO SUCCESSFULLY COMMERCIALIZE OUR PRODUCTS, WE WILL HAVE DIFFICULTY MAINTAINING AND INCREASING OUR SALES

We are continuing to develop sales, distribution and marketing capabilities in the United States, the European Union, the Far East and in South America. In 2003, we began a marketing strategy to promote UFE awareness and the benefits of our product for the treatment of uterine fibroids. We have limited sales and marketing experience and it will be expensive and time-consuming for us to develop a global marketing and sales force. Moreover, we may choose, or find it necessary, to enter into strategic collaborations to sell, market and distribute our products. We may not be able to provide adequate incentive to our sales force or to establish and maintain favorable distribution and marketing collaborations with other companies to promote our products. In addition, any third party with whom we have established a marketing and distribution relationship may not devote sufficient time to the marketing and sales of our products thereby exposing us to potential expenses in terminating such distribution agreements. We and any of our third-party collaborators must also market our products in compliance with federal, state and local laws relating to the providing of incentives and inducements. Violation of these laws can result in substantial penalties. If we are unable to successfully motivate and expand our marketing and sales force and further develop our sales and marketing capabilities, or if our distributors fail to promote our products, we will have difficulty maintaining and increasing our sales.

WE MAY BE REQUIRED TO EXPEND SIGNIFICANT RESOURCES FOR RESEARCH, DEVELOPMENT, TESTING AND REGULATORY APPROVAL OF OUR PRODUCTS UNDER DEVELOPMENT, AND THESE PRODUCTS MAY NOT BE DEVELOPED SUCCESSFULLY

We are developing and commercializing products for medical applications using embolotherapy techniques. Most of our next-generation embolotherapy product candidates are still in the early stages of research and development. Our products may not provide greater benefits than current treatments or products, or alternative treatments or products under development. All of our products under development will require significant additional research, development, pre-clinical and/or clinical testing, regulatory approval and a commitment of significant additional resources prior to their commercialization. Our potential products may not:

IF WE DO NOT DEVELOP AND INTRODUCE NEW PRODUCTS, WE MAY NOT ACHIEVE REVENUE OPPORTUNITIES

We derived approximately 18% of our revenues for the six-month period ended June 30, 2004, and 16% of our revenues for six-month period ended June 30, 2003, from the sale of non-strategic medical device products that we do not expect to constitute a significant portion of our revenues on an ongoing basis. In addition, we believe that a significant portion of our revenues for the year ended December 31, 2003 and the six months ended June 30, 2004 was derived from the sale of EmboGold Microspheres for UFE, an indication for which we do not have, and do not presently intend to seek clearance from the FDA to market. Accordingly, we need to develop and introduce new applications for our embolotherapy technology and pursue opportunities for microsphere technology in other medical applications. If we are not successful in developing new applications and products, we will not achieve new revenue opportunities.

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IF WE ARE UNABLE TO OBTAIN OR MAINTAIN ADEQUATE PRODUCT LIABILITY INSURANCE, THEN WE MAY HAVE TO PAY SIGNIFICANT MONETARY DAMAGES IN A SUCCESSFUL PRODUCT LIABILITY CLAIM AGAINST US

The development and sale of medical devices entails an inherent risk of product liability. For example, if we are not able to successfully educate physicians to properly use our products, or if the market determines or concludes that any of our products are not safe or effective for any reason, we may be exposed to product liability claims. Product liability insurance is generally expensive for medical device companies such as ours. Although we maintain limited product liability insurance coverage for our products, it is possible that we will not be able to obtain further product liability insurance on acceptable terms, if at all. Our existing insurance and any additional insurance we may subsequently obtain may not provide us with adequate coverage against all potential claims. If we are exposed to product liability claims for which we have insufficient insurance, we may be required to pay significant damages, which would prevent or delay our ability to commercialize our products and could harm our business and results of operations.

IF WE ARE NOT ABLE TO COMPETE EFFECTIVELY, WE MAY EXPERIENCE DECREASED DEMAND FOR OUR PRODUCTS, WHICH MAY RESULT IN PRICE REDUCTIONS

We have many competitors in the United States and abroad, including medical device, biotechnology and other alternative therapeutic companies, universities and other private and public research institutions. We have experienced increased competition since receiving FDA approval for use of our Embosphere Microsphere for UFE. Our success depends upon our ability to develop and maintain a competitive position in the embolotherapy market. Our key medical device competitors are Biocompatibles, Ltd., Boston Scientific Corporation, Cook Incorporated and Cordis Corporation, a Johnson & Johnson company. These and many of our other competitors have greater capabilities, experience and financial resources than we do. As a result, they may develop products quicker or at less cost, that compete with our microsphere products. In addition, we may experience decreased demand for our products if these or other competitors announce that they have begun to develop products that compete with our products. For example, in the fourth quarter of 2002, some of our competitors provided free or reduced price samples. The availability of these free or reduced priced samples has, and may continue to adversely affect our product revenues. Currently, the primary products with which our microspheres compete for some of our applications are polyvinyl alcohol, polymerizing gels and coils. In addition, our competitors may develop technologies that render our products obsolete or otherwise noncompetitive.

We may not be able to improve our products or develop new products or technologies quickly enough to maintain a competitive position in our market and continue to commercially develop our business. Moreover, we may not be able to compete effectively, and competitive pressures may result in less demand for our products and impair our ability to become profitable.

IF WE FAIL TO MAINTAIN, OR IN SOME INSTANCES OBTAIN, AN ADEQUATE LEVEL OF REIMBURSEMENT FOR OUR PRODUCTS BY THIRD-PARTY PAYERS, THERE MAY BE NO COMMERCIALLY VIABLE MARKETS FOR OUR PRODUCTS

The availability and levels of reimbursement by governmental and other third-party payers affects the market for any medical device. We may not be able to sell our products profitably if reimbursement is unavailable or limited in scope or amount. Some insurance companies do not fully reimburse for embolization procedures. These third-party payers attempt to contain or reduce the costs of healthcare by challenging the prices that companies such as ours charge for medical products. In some foreign countries, particularly the countries of the European Union where our microsphere products are currently marketed and sold, the pricing of medical devices is subject to governmental control, and the prices charged for our products have in some instances been reduced as a result of these controls. Additionally, in both the United States and some foreign jurisdictions, there have been a number of legislative and regulatory proposals to change the healthcare system. Further proposals are likely. These proposals, if adopted, could result in less revenues per procedure for us, and could affect our ability to market our products profitably.

IF WE DO NOT RETAIN OUR SENIOR MANAGEMENT, OTHER KEY EMPLOYEES, SCIENTIFIC COLLABORATORS AND ADVISORS, WE MAY NOT BE ABLE TO SUCCESSFULLY IMPLEMENT OUR BUSINESS STRATEGY

The loss of key members of our management team could harm us. We also depend on our scientific collaborators and advisors, all of whom have other commitments that may limit their availability to us. Our success is substantially dependent on the ability, experience and performance of these members of our senior management and other key employees, scientific collaborators and advisors. Because of their ability and experience, if we lose one or more of these individuals, we may not be able to successfully implement our business strategy.

IF WE DO NOT ATTRACT AND RETAIN SKILLED PERSONNEL, WE WILL NOT BE ABLE TO EXPAND OUR BUSINESS

Our future success will depend in large part upon our ability to attract and retain highly skilled scientific, operational, managerial and marketing personnel, particularly as we expand our activities in product development, the regulatory approval process and sales and manufacturing. We face significant competition for these types of persons from other companies, research and academic institutions, government entities and other organizations. Consequently, if we are unable to attract and retain skilled personnel, we will not be able to expand our business.

IF WE MAKE ANY ACQUISITIONS, WE WILL INCUR A VARIETY OF COSTS AND MAY NEVER SUCCESSFULLY INTEGRATE THE ACQUIRED BUSINESS INTO OURS

We may attempt to acquire businesses, technologies, services or products that we believe are a strategic complement to our business model. We may encounter operating difficulties and expenditures relating to integrating an acquired business, technology, service or product. These acquisitions may also absorb significant management attention that would otherwise be available for ongoing development of our business. Moreover, we may never realize the anticipated benefits of any acquisition. We may also make dilutive issuances of equity securities, incur debt or experience a decrease in the cash available for our operations, or incur contingent liabilities in connection with any future acquisitions.

BECAUSE SEPRACOR INC. AND OUR EXECUTIVE OFFICERS AND DIRECTORS OWN A SIGNIFICANT AMOUNT OF OUR COMMON STOCK, THEY MAY BE ABLE TO EXERT CONTROL OVER US

As of June 30, 2004, Sepracor Inc. owned approximately 23% of our outstanding common stock. Moreover, two of our directors are executive officers of Sepracor. Accordingly, Sepracor may have significant influence over corporate actions requiring stockholder approval, such as the election of directors, amendment of our charter documents and the approval of merger or significant asset sale transactions.

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This ownership concentration could cause the market price of our common stock to decline. In addition, conflicts of interest between Sepracor and us may arise, including with respect to competitive business activities and control of our management and our affairs.

OUR SUBSIDIARY’S LITIGATION WITH TERUMO COULD BE EXPENSIVE AND TIME CONSUMING AND ANY ADVERSE DECISION BY A COURT COULD REQUIRE THE PAYMENT OF MONEY TO TERUMO

On January 27, 2003, our French subsidiary, BioSphere Medical, S.A., received notice from Terumo Europe, N.V. that Terumo has initiated legal proceedings in the Commercial Court of Pontoise, France alleging that it suffered damages from a purported termination of the distribution contract by BioSphere Medical, S.A. BioSphere Medical, S.A. and Terumo Europe entered into a distribution agreement in January 2002 pursuant to which Terumo Europe became the exclusive distributor of Embosphere Microsphere and EmboGold Microsphere products in certain countries of Europe. The case continues to remain pending before the Commercial Court of Pontoise, France. It is not possible at this time to make a reasonable assessment as to the final outcome of this proceeding. No provision for any possible loss from such litigation has been provided for in the accompanying financial statements. We strongly believe that Terumo’s allegations are without merit and we will vigorously defend against the claims it has made.

IF THE ESTIMATES WE MAKE, AND THE ASSUMPTIONS ON WHICH WE RELY, IN PREPARING OUR FINANCIAL STATEMENTS PROVE INACCURATE, OUR ACTUAL RESULTS MAY VARY FROM THOSE REFLECTED IN OUR PROJECTIONS AND ACCRUALS

Our financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of our assets, liabilities, revenues and expenses, the amounts of charges accrued by us and related disclosure of contingent assets and liabilities. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. There can be no assurance, however, that our estimates, or the assumptions underlying them, will be correct. This, in turn, could adversely affect our stock price.

RISKS RELATING TO REGULATORY MATTERS

IF WE DO NOT OBTAIN AND MAINTAIN THE REGULATORY APPROVALS REQUIRED TO MARKET AND SELL OUR PRODUCTS, THEN OUR BUSINESS MAY BE UNSUCCESSFUL AND THE MARKET PRICE OF OUR STOCK MAY DECLINE

We are subject to regulation by government agencies in the United States and abroad with respect to the manufacture, packaging, labeling, advertising, promotion, distribution and sale of our products. For example, our products are subject to approval or clearance by the FDA prior to marketing in the United States for commercial use. Similar regulations exist in most major foreign markets, including the European Union and Asia. The process of obtaining necessary regulatory approvals and clearances will be time-consuming and expensive for us. If we do not receive required regulatory approval or clearance to market our products, or if any approvals we have received are revoked or terminated, we may not be able to develop and commercialize our products and become profitable, and the value of our common stock may decline.

IF THE FDA OR OTHER REGULATORY AGENCIES PLACE RESTRICTIONS ON, OR IMPOSE ADDITIONAL APPROVAL REQUIREMENTS WITH RESPECT TO PRODUCTS WE ARE THEN MARKETING, WE MAY INCUR SUBSTANTIAL ADDITIONAL COSTS AND EXPERIENCE DELAYS OR DIFFICULTIES IN CONTINUING TO MARKET AND SELL THESE PRODUCTS

Even if the FDA grants us clearance with respect to marketing any product it may place substantial restrictions on the indications for which we may market the product, which could result in lower revenues. The marketing claims we are permitted to make in labeling or advertising regarding our microspheres are limited to those specified in any FDA clearance or approval. For example, because our EmboGold Microspheres are not cleared for use in UFE, we may not promote them for this use.

We may in the future make modifications to our microspheres or their labeling which we determine do not necessitate the filing of a new 510(k) notification. However, if the FDA does not agree with our determination, it will require us to make additional 510(k) filings for the modification, and we may be prohibited from marketing the modified product until we obtain FDA clearance. Similarly, if we obtain premarket approval, we may not be able to make product or labeling changes until we get FDA clearance.

Further, the FDA has classified our embolotherapy device into Class III, which means that even though we have obtained clearance under Section 510(k) to market the device for certain indications, the FDA could in the future promulgate a regulation requiring premarket approval of the device under Section 515 of the Federal Food, Drug, and Cosmetic Act to allow it to remain on the market. We may experience difficulty in providing the FDA with sufficient data for premarket approval in a timely fashion, if at all. In addition, the FDA may require us to conduct a postmarket surveillance study that would require us to track specific elements of patient experience with our microspheres product after we have begun marketing it. If such a study revealed previously unknown adverse events or an unexpectedly high rate of adverse events, the FDA could place further restrictions on our marketing of the device, or rescind our clearance or approval.

Our products will be subject to continuing FDA requirements relating to quality control, quality assurance, and maintenance of records, documentation, manufacturing, labeling and promotion of medical devices. We are also required to submit medical device reports to the FDA to report device-related deaths or serious injuries, as well as malfunctions, the recurrence of which would be likely to cause or contribute to a death or serious injury. These reports are publicly available.

IF WE FAIL TO COMPLY WITH REGULATORY LAWS AND REGULATIONS, WE WILL BE SUBJECT TO ENFORCEMENT ACTIONS, WHICH WILL AFFECT OUR ABILITY TO MARKET AND SELL OUR PRODUCTS AND MAY HARM OUR REPUTATION

If we fail to comply with applicable federal, state or foreign laws or regulations, we could be subject to enforcement actions, which could affect our ability to develop, market and sell our products successfully and could harm our reputation and lead to less acceptance of our products by the market. These enforcement actions include:

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RISKS RELATING TO INTELLECTUAL PROPERTY

IF WE ARE UNABLE TO OBTAIN PATENT PROTECTION FOR OUR PRODUCTS, THEIR COMPETITIVE VALUE COULD DECLINE

We may not obtain meaningful protection for our technology and products with the patents and patent applications that we own or license relating to our microsphere technology or other ancillary products. In particular, the patent rights we possess or are pursuing generally cover our technologies to varying degrees, and these rights may not prevent others from designing products similar to or otherwise competitive with our Embosphere Microspheres and other products commercialized by us. To the extent that our competitors are able to design products competitive with ours without infringing our intellectual property rights, we may experience less market penetration with our products and, consequently, we may have decreased revenues.

We do not know whether competitors have similar United States patent applications on file, since United States patent applications filed before November 28, 2000 or for which no foreign patents will be sought are secret until issued, and applications filed after November 28, 2000 are published approximately 18 months after their earliest priority date. Consequently, the United States Patent and Trademark Office could initiate interference proceedings involving our owned or licensed United States patent applications or issued patents. Further, there is a substantial backlog of patent applications at the United States Patent and Trademark Office, and the approval or rejection of patent applications may take several years.

We require our employees, consultants and advisors to execute confidentiality agreements. However, we cannot guarantee that these agreements will provide us with adequate protection against improper use or disclosure of confidential information. In addition, in some situations, these agreements may conflict with, or be subject to, the rights of third parties with whom our employees, consultants or advisors have prior employment or consulting relationships. Further, others may independently develop substantially equivalent proprietary information and techniques, or otherwise gain access to our trade secrets. Our failure to protect our proprietary information and techniques may inhibit or limit our ability to exclude certain competitors from the market.

IF WE BECOME INVOLVED IN EXPENSIVE PATENT LITIGATION OR OTHER PROCEEDINGS TO ENFORCE OUR PATENT RIGHTS, WE COULD INCUR SUBSTANTIAL COSTS AND EXPENSES OR SUBSTANTIAL LIABILITY FOR DAMAGES OR BE REQUIRED TO STOP OUR PRODUCT DEVELOPMENT AND COMMERCIALIZATION EFFORTS

In order to protect or enforce our patent rights, we may have to initiate legal proceedings against third parties, such as infringement suits or interference proceedings. By initiating legal proceedings to enforce our intellectual property rights, we may also provoke these third parties to assert claims against us and, as a result, our patents could be narrowed, invalidated or rendered unenforceable by a court. Furthermore, we may be sued for infringing on the intellectual property rights of others. We may find it necessary, if threatened, to initiate a lawsuit seeking a declaration from a court regarding the proprietary rights of others. Intellectual property litigation is costly, and, even if we prevail, could divert management attention and resources away from our business.

The patent position of companies like ours generally is highly uncertain, involves complex legal and factual questions, and has recently been the subject of much litigation. We may not prevail in any patent-related proceeding. If we do not prevail in any litigation, we could be required to pay damages, stop the infringing activity, or obtain a license. Any required license might not be available to us on acceptable terms, or at all. In addition, some licenses may be nonexclusive, and therefore, our competitors may have access to the same technology licensed to us. If we fail to obtain a required license or are unable to design around a patent, we may be prevented from selling some of our products, which could decrease our revenues.

IF ANY OF OUR LICENSES TO USE THIRD-PARTY TECHNOLOGIES IN OUR PRODUCTS ARE TERMINATED, WE MAY BE UNABLE TO DEVELOP, MARKET OR SELL OUR PRODUCTS

We are dependent on various license agreements relating to each of our current and proposed products that give us rights under intellectual property rights of third parties. These licenses impose commercialization, sublicensing, royalty, insurance and other obligations on us. Our failure, or any third party’s failure, to comply with the terms of any of these licenses could result in our losing our rights to the license, which could result in our being unable to develop, manufacture or sell products which contain the licensed technology.

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RISKS RELATING TO THE PRODUCTION AND SUPPLY OF OUR PRODUCTS

IF WE EXPERIENCE MANUFACTURING DELAYS OR INTERRUPTIONS IN PRODUCTION, THEN WE MAY EXPERIENCE CUSTOMER DISSATISFACTION AND OUR REPUTATION COULD SUFFER

If we fail to produce enough products at our own manufacturing facility or at a third-party manufacturing facility, we may be unable to deliver products to our customers on a timely basis, which could lead to customer dissatisfaction and could harm our reputation and ability to compete. We currently produce all of our microsphere products in one manufacturing facility in France and subcontract a majority of the final packaging process and also our entire U.S. catheter and U.S. guidewire processes to an independent contract manufacturer in the United States. We would likely experience significant delays or cessation in producing our products at either of these facilities if a labor strike, natural disaster, local or regional conflict or other supply disruption were to occur. If we are unable to manufacture our products at our facility in France, or package certain of our products with our contract manufacturer, we may be required to enter into arrangements with one or more alternative contract manufacturing companies. In addition, if we are required to depend on third-party manufacturers, our profit margins may be lower, which will make it more difficult for us to achieve profitability.

Medical device manufacturers must adhere to the FDA’s current Good Manufacturing Practices regulations, which are enforced by the FDA through its facilities inspection program. The manufacturers may not be able to comply or maintain compliance with Good Manufacturing Practices regulations. If our manufacturers fail to comply, their noncompliance could significantly delay our receipt of new product premarket approvals or result in FDA enforcement action, including an embargo on imported devices. For a premarket approval device, if we change our manufacturing facility or switch to a third-party manufacturer, we will be required to submit a premarket approval application supplement before the change is implemented.

WE HAVE INITIATED A PROGRAM TO REPLACE SYRINGES CONTAINING OUR MICROSPHERES PRODUCTS BECAUSE OF SHELF LIFE LIMITATIONS ON THE SALINE SOLUTION CONTAINED WITHIN THE SYRINGES, AND RESERVES WE HAVE TAKEN MAY NOT BE ADEQUATE

We have incurred costs in connection with replacing syringes containing our microspheres products because of shelf life limitations of the saline solution contained within the syringes. We have informed our customers of these shelf life limitations, and have advised them to contact us regarding product replacement of their syringes. These costs may be in excess of those currently reserved for product obsolescence, excess inventory, warranty claims and product returns. For the six-month period ended June 30, 2004, we have recognized $223,000 in costs of product sales for product replacement as a result of shelf life limitations.

BECAUSE WE RELY ON A LIMITED NUMBER OF SUPPLIERS, WE MAY EXPERIENCE DIFFICULTY IN MEETING OUR CUSTOMERS’ DEMANDS FOR OUR PRODUCTS IN A TIMELY MANNER OR WITHIN BUDGET

We currently purchase key components of our microspheres from a variety of outside sources. Some of these components may only be available to us through a few sources. We generally do not have long-term agreements with any of our suppliers.

Our reliance on our suppliers exposes us to risks, including:

Consequently, in the event that our suppliers delay or interrupt the supply of components for any reason, our ability to produce and supply our products could be impaired, which could lead to customer dissatisfaction.

RISKS RELATING TO OUR FOREIGN OPERATIONS

IF WE ARE UNABLE TO MEET THE OPERATIONAL, LEGAL AND FINANCIAL CHALLENGES THAT WE ENCOUNTER IN OUR INTERNATIONAL OPERATIONS, WE MAY NOT BE ABLE TO GROW OUR BUSINESS

Our worldwide manufacturing and European sales operations are currently conducted primarily through our French subsidiary. Furthermore, we currently derive a portion of our revenues from the sale of our microspheres and other products in the European Union. We are increasingly subject to a number of challenges which specifically relate to our international business activities. Our international operations may not be successful if we are unable to meet and overcome these challenges, which would limit the growth of our business. These challenges include:

BECAUSE WE TRANSLATE FOREIGN CURRENCY FROM INTERNATIONAL SALES INTO U.S. DOLLARS AND ARE REQUIRED TO MAKE FOREIGN CURRENCY PAYMENTS, WE MAY INCUR LOSSES DUE TO FLUCTUATIONS IN FOREIGN CURRENCY EXCHANGE RATES

A significant portion of our business is conducted in the European Union Euro. We recognize foreign currency gains or losses arising from our operations in the period incurred. As a result, currency fluctuations between the U.S. dollar and the currencies in which we do business will cause foreign currency translation gains and losses, which may cause fluctuations in our future operating results. We do not currently engage in foreign exchange hedging transactions to manage our foreign currency exposure.

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RISK RELATING TO OUR STOCK PRICE

BECAUSE THE MARKET PRICE OF OUR STOCK IS HIGHLY VOLATILE, INVESTMENTS IN OUR STOCK COULD RAPIDLY LOSE THEIR VALUE AND WE MAY INCUR SIGNIFICANT COSTS FROM CLASS ACTION LITIGATION

The market price of our stock is highly volatile. As a result, investments in our stock could rapidly lose their value. In addition, the stock market often experiences extreme price and volume fluctuations, which affect the market price of many medical device companies and which are often unrelated to the operating performance of these companies.

When the market price of a stock has been as volatile as our stock price has been, holders of that stock may institute securities class action litigation against the company that issued the stock. If any of our stockholders were to bring a lawsuit of this type against us, even if the lawsuit is without merit, we could incur substantial costs in defending the lawsuit. The lawsuit could also divert the time and attention of our management.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

DERIVATIVE FINANCIAL INSTRUMENTS, OTHER FINANCIAL INSTRUMENTS, AND DERIVATIVE COMMODITY INSTRUMENTS

As of June 30, 2004, we did not participate in any derivative financial instruments or other financial and commodity instruments for which fair value disclosure would be required under Financial Accounting Standards Board Statement of Financial Accounting Standard No. 107 “Disclosures About Fair Value of Financial Instruments.”

PRIMARY MARKET RISK EXPOSURES

Our primary market risk exposure is in the area of foreign currency exchange rate fluctuations. We are exposed to currency exchange rate fluctuations related to our operations in France. Operations in France are denominated in the Euro and as of June 30, 2004 approximately €4.1 million or $4.9 million remained outstanding within the inter-company trade accounts. We have not engaged in formal currency hedging activities to date, but we do have a limited natural hedge in that both our revenues and expenses in France are primarily denominated in the Euro. We also attempt to minimize exchange rate risk by converting non-U.S. currency to U.S. dollars as often as practicable. We generally view our investment in foreign subsidiaries operating under a functional currency (the Euro) other than our reporting currency (the U.S. Dollar) as long-term. Our investment in foreign subsidiaries is sensitive to fluctuations in foreign currency exchange rates. The effect of a change in foreign exchange rates on our net investment in foreign subsidiaries is reflected in the “Accumulated other comprehensive loss” component of stockholders’ equity. Because our foreign currency exchange rate risk is not material, no quantitative tabular disclosure has been provided.

The primary objective of our investment activities is to preserve principal while at the same time maximizing the income we receive from our investments without significantly increasing risk. Some of the securities that we invest in may have market risk. This means that an increase in prevailing interest rates may cause the principal amount of the investment to decrease. To minimize this risk in the future, we maintain our portfolio of cash equivalents and short-term investments in a variety of securities, including commercial paper, investment grade asset-backed corporate securities, money market funds and government and non-government debt securities. However, due to the conservative nature of our investments, the relatively short duration of their maturities, our ability to convert some or all of our long-term investments to less interest rate-sensitive holdings and our general intent to hold most securities until maturity, we believe interest rate risk is mitigated. As of June 30, 2004, approximately 66% of the $3.11 million classified as available-for-sale marketable securities will mature within one year.

ITEM 4. CONTROLS AND PROCEDURES

Our management, with the participation of our chief executive and financial officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of June 30, 2004. Based on this evaluation, our chief executive and financial officer concluded that, as of June 30, 2004, our disclosure controls and procedures were (1) designed to ensure that material information relating to us is made known to our chief executive and financial officer by others within our company, particularly during the period in which this report was being prepared, and (2) effective, in that they provide reasonable assurance that the information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

No change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) occurred during the fiscal quarter ended June 30, 2004 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

On January 27, 2003, our French subsidiary, BioSphere Medical, S.A., received notice from Terumo Europe, N.V. that Terumo has initiated legal proceedings in the Commercial Court of Pontoise, France alleging that it suffered damages from a purported termination of the distribution contract by BioSphere Medical, S.A. BioSphere Medical, S.A. and Terumo Europe entered into a distribution agreement in January 2002 pursuant to which Terumo Europe became the exclusive distributor of Embosphere Microsphere and EmboGold Microsphere products in certain countries of Europe. The case continues to remain pending before the Commercial Court of Pontoise, France. It is not possible at this time to make a reasonable assessment as to the final outcome of this proceeding. No provision for any possible loss from such litigation has been provided for in the accompanying financial statements. We strongly believe that Terumo’s allegations are without merit and we will vigorously defend the claims it has made against us.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

The Company’s Annual Meeting of Shareholders was held on May 19, 2004. At the meeting, the following matter was voted upon by holders of 93.5% of the total outstanding shares:

To elect the following seven Directors:

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

EXHIBIT INDEX

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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