UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                   FORM 10-QSB

[X]  Quarterly Report under Section 13 or 15(d) of the Securities Exchange Act
     of 1934

                  For the quarterly period ended March 31, 2004

[ ]  Transition Report under Section 13 or 15(d) of the Securities Exchange
     Act of 1934

               For the transition period from _______ to ________

                         Commission file number: 1-12471

                        INTEGRATED SURGICAL SYSTEMS, INC.
                        ---------------------------------
        (Exact name of small business issuer as specified in its charter)

                   Delaware                          68-0232575
                   --------                          ----------
       (State or other jurisdiction of    (IRS Employer Identification No.)
       incorporation or organization)

             1850 Research Park Drive, Davis, California 95616-4884
             ------------------------------------------------------
                    (Address of principal executive offices)

                                 (530) 792-2600
                                 --------------
                           (Issuer's telephone number)

                                       N/A
                                       ---
              (Former name, former address and formal fiscal year,
                         if changed since last report)

State the number of shares outstanding of each of the issuer's classes of common
equity, as of the latest practicable date: The number of shares of the issuer's
common stock outstanding as of May 27, 2004 was 44,867,358.

Transitional Small Business Disclosure Format: Yes [ ] No [ X ]


Integrated Surgical Systems, Inc. Form 10-QSB For the quarter ended March 31, 2004 Table of Contents Page Part I. Financial Information Item 1. Condensed Consolidated Financial Statements (unaudited) 2 Condensed Consolidated Balance Sheet at March 31, 2004 2 Condensed Consolidated Statements of Operations for the three months ended March 31, 2004 and 2003 3 Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2004 and 2003 4 Notes to Condensed Consolidated Financial Statements 5 Item 2. Management's Discussion and Analysis 8 Item 3. Controls and Procedures 12 Part II. Other Information Item 1. Legal Proceedings 12 Item 2. Changes in Securities 12 Item 3. Changes in and Disagreement with Accountants 12 Item 4. Submission of Matters to a Vote of Security Holders 12 Item 5. Other Information 12 Item 6. Exhibits and Reports on Form 8-K 12 Signature 13 Certifications 14

Part I. Financial Information Item 1. Financial Statements (unaudited) Integrated Surgical Systems, Inc. Condensed Consolidated Balance Sheet March 31, 2004 (Unaudited) Assets - ------ Current assets: Cash $ 568 Accounts receivable 190,500 Inventory 495,951 Other current assets 110,215 ------------ Total current assets 797,234 Property and equipment, net 27,951 ------------ $ 825,185 ============ Liabilities and stockholders' deficit - ------------------------------------- Current liabilities: Accounts payable $ 2,194,617 Accrued payroll and related expenses 1,243,485 Accrued liabilities 340,535 Unearned income 2,381,687 Other current liabilities 132,845 ------------ Total current liabilities 6,293,170 Convertible preferred stock, $0.01 par value, 1,000,000 shares authorized; 168 shares issued and outstanding ($168,495 aggregate liquidation value) 168,495 Stockholders' deficit: Common stock, $0.01 par value, 100,000,000 shares authorized; 44,867,358 shares issued and outstanding 448,674 Additional paid-in capital 61,902,692 Accumulated deficit (67,987,846) ------------ Total stockholders' deficit (5,636,480) ------------ $ 825,185 ============ See accompanying notes to condensed consolidated financial statements. 2

Integrated Surgical Systems, Inc. Condensed Consolidated Statements of Operations (Unaudited) Three months ended March 31, ---------------------------- 2004 2003 ------------ ------------ Net revenue $ 782,801 $ 3,020,602 Cost of revenue 295,099 1,666,931 ------------ ------------ 487,702 1,353,671 Operating expenses: Selling, general and administrative 355,882 778,563 Research and development 387,482 448,269 ------------ ------------ 743,364 1,226,832 ------------ ------------ Operating income (loss) (255,662) 126,839 Other income (expense), net (975) 43,152 ------------ ------------ Net income (loss) $ (256,637) $ 169,991 ============ ============ Basic net income (loss) per common share $ (0.01) $ 0.00 ============ ============ Diluted net income (loss) per common share $ (0.01) $ 0.00 ============ ============ Shares used in computing basic net income (loss) per share 44,867,358 41,978,469 ============ ============ Shares used in computing diluted net income (loss) per share 44,867,358 53,349,941 ============ ============ See accompanying notes to condensed consolidated financial statements. 3

Integrated Surgical Systems, Inc. Condensed Consolidated Statements of Cash Flows (Unaudited) Three months ended March 31, ---------------------------- 2004 2003 ----------- ----------- Cash flows from operating activities: Net income (loss) $ (256,637) $ 169,991 Adjustments to reconcile net income (loss) to net cash used in operating activities: Depreciation 7,046 70,964 Changes in operating assets and liabilities: Accounts receivable (79,744) 332,688 Inventory (8,996) 139,126 Other current assets 2,694 42,934 Accounts payable 231,768 146,945 Accrued payroll and related expenses 362,037 131,455 Accrued liabilities (14,379) (27,146) Unearned income (462,486) (1,070,479) Other current liabilities (17) 62,996 ----------- ----------- Net cash used in operating activities (218,714) (526) Cash flows from investing activities: Purchases of property and equipment -- (17,708) Cash flows from financing activities: Proceeds from officer advances 136,573 22,645 Payments on officer advances (60,200) (13,252) ----------- ----------- Net cash provided by financing activities 76,373 9,393 Effect of exchange rate changes on cash -- 87,989 ----------- ----------- Net increase (decrease) in cash (142,341) 79,150 Cash at beginning of period 142,909 82,069 ----------- ----------- Cash at end of period $ 568 $ 161,219 =========== =========== See accompanying notes to condensed consolidated financial statements. 4

Integrated Surgical Systems, Inc. Notes to Condensed Consolidated Financial Statements (unaudited) March 31, 2004 1. Basis of presentation The condensed consolidated financial statements have been prepared by Integrated Surgical Systems, Inc. ("the Company") pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted as permitted by such rules and regulations. While the interim financial information contained in this filing is unaudited, such financial statements reflect all adjustments, consisting only of normal recurring adjustments, which the Company considers necessary for a fair presentation. The results for interim periods are not necessarily indicative of the results to be expected for the entire fiscal year. These financial statements should be read in conjunction with the Consolidated Financial Statements and Notes thereto included in the Company's Annual Report on Form 10-KSB for the fiscal year ended December 31, 2003. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts and related disclosures. Actual results could differ from those estimates. Certain amounts for prior years have been reclassified to conform with 2004 financial statement presentations. 2. Results of Operations and Management's Plan The accompanying condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. As shown in the accompanying condensed consolidated financial statements for the three month period ended March 31, 2004, the Company incurred a net loss of $256,637 and has an accumulated deficit of $67,987,846. For the year ended December 31, 2003, the Company incurred a net loss of $3,250,219 and had an accumulated deficit of $67,731,209 as of December 31, 2003. The report of independent auditors on the Company's December 31, 2003 consolidated financial statements includes an explanatory paragraph indicating there is substantial doubt about the Company's ability to continue as a going concern. The Company believes that it has a plan to address these issues and enable the Company to continue operating through December 31, 2004. This plan includes obtaining additional equity or debt financing, increasing product sales in existing markets, increasing sales of system upgrades, and further reductions in operating expenses as necessary. Although the Company believes that the plan will be realized, there is no assurance that these events will occur. In the event that the Company is unsuccessful, it is possible that it will cease operations or seek bankruptcy protection. The condensed consolidated financial statements do not include any adjustments to reflect the uncertainties related to the recoverability and classification of assets or the amounts and classification of liabilities that may result from an inability on the Company's part to continue as a going concern. 3. Inventories At March 31, 2004, the components of inventory were: Raw materials $157,089 Work-in-process 220,360 Finished goods 94,398 Deferred product development contract costs 24,104 -------- $495,951 ======== 5

4. Warranty and Service Contracts The Company offers a one-year warranty for parts and labor on all ROBODOC systems generally commencing upon the completion of training and installation. In most cases, the Company's customers purchase a service contract, which includes warranty coverage (parts and labor), unspecified product maintenance updates, customer support services and various consumables required during surgical procedures. Customers not covered by warranties or service contracts are billed on a time and materials basis for service, and on a per unit basis for products. At March 31, 2004, the Company had no recorded warranty liability as all systems within the one-year warranty period were covered by service contracts. 5. Stockholders' equity During the three month period ended March 31, 2004, the Company issued no shares of common stock. 6. Stock-Based Compensation The Company uses the intrinsic value method in accounting for its employee stock options in accordance with Accounting Principles Board Opinion No. 25 "Accounting for Stock Issued to Employees". Under the intrinsic value method, when the exercise price of the Company's employee stock options equals or exceeds the market price of the underlying stock on the date of grant, no compensation expense is recognized. Stock option awards which are granted at less than fair market value result in the recognition of deferred compensation. Deferred compensation is shown as a reduction of stockholders' equity and is amortized to operating expenses over the vesting period of the stock award. The Company had no deferred compensation at March 31, 2004. Statement of Financial Accounting Standards No. 148, "Accounting for Stock-Based Compensation-Transition and Disclosure of an Amendment of SFAS No. 123" and Statement of Financial Accounting Standards No. 123 ("SFAS No. 123"), "Accounting for Stock-Based Compensation", require the disclosure of certain information as if the Company had adopted the fair value provisions of SFAS No. 123. The table below illustrates the effect on net income (loss) and net income (loss) per share had the Company adopted the fair value provisions of SFAS No. 123 using the following assumptions for the three months ended March 31, 2004 and 2003, respectively: risk-free interest rates of 2.0% and 3.0%; volatility factors of the expected market price of the common stock of 1.007 and 0.931; and an expected life of the option of 4 years. Quarter Ended March 31, ------------------------ 2004 2003 --------- --------- Net income (loss), as reported $(256,637) $ 169,991 Add: stock-based employee compensation included in reported net income (loss) -- -- Less: stock-based employee compensation expense, determined under fair value method for all awards (8,459) (26,131) --------- --------- Pro forma net income (loss) $(265,096) $ 143,860 ========= ========= Income (loss) per share: Basic net income (loss) per share $ (0.01) $ 0.00 ========= ========= Diluted net income (loss) per share $ (0.01) $ 0.00 ========= ========= Pro forma Basic net income (loss) per share $ (0.01) $ 0.00 ========= ========= Diluted net income (loss) per share $ (0.01) $ 0.00 ========= ========= 6

7. Net income (loss) per share Basic net income (loss) per share is computed by dividing the net income (loss) available to common stockholders for the period by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share is computed by dividing the net income (loss) for the period by the weighted average number of common and potential common shares outstanding during the period if their effect is dilutive. Potential common shares are comprised of outstanding employee stock options, outstanding warrants and outstanding preferred stock issuable upon the exercise of the stock option, warrant or preferred stock. 8,106,871 potential common shares issuable under stock options, warrants and preferred stock to purchase common shares have been excluded for the three months ended March 31, 2004 from the determination of diluted net income (loss) per share because the effect of such shares would have been anti-dilutive. At March 31, 2003, the Company had outstanding options to purchase 2,663,067 shares of common stock (with exercise prices ranging from $0.025 to $8.50), 7,476,354 outstanding warrants to purchase 8,011,544 shares of common stock (with exercise prices from $0.01 to $8.34), and 12,524,800 shares of common stock issuable upon conversion of Series G convertible preferred stock. Of these options, warrants and preferred stock, 11,371,472 of these potential shares of common stock were considered in the calculation of diluted earnings per share. The exercise price and the ultimate number of shares of common stock issuable upon conversion of the warrants are subject to adjustments based upon the occurrence of certain future events. 8. Other comprehensive loss Three months ended March 31, ---------------------------- 2004 2003 --------- --------- Net income (loss) $(256,637) $ 169,991 Other comprehensive income (loss): Foreign currency translation -- (21,716) --------- --------- Comprehensive income (loss) $(256,637) $ 148,275 ========= ========= 9. Contingencies The Company is subject to legal proceedings and claims that arise in the normal course of business. The Company cannot assure that it would prevail in such matters nor can it assure that any remedy could be reached on mutually agreeable terms, if at all. Due to the inherent uncertainties of litigation, were there any such matters, the Company would not be able to accurately predict their ultimate outcome. As of March 31, 2004 there were no current proceedings or litigation involving the Company that management believes would have a material adverse impact on the Company's financial position, results of operations or cash flows. 7

Item 2. Management's Discussion and Analysis The discussion in this Quarterly Report on Form 10-QSB contains forward-looking statements that have been made pursuant to the provisions of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are based on current expectations, estimates and projections about the software industry and certain assumptions made by the Company's management. Words such as "anticipates," "expects," "intends," "plans," "believes," "seeks," "estimates," "could," "would," "may" and variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to predict; therefore, actual results may differ materially from those expressed or forecasted in any such forward-looking statements. Unless required by law, the Company undertakes no obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise. However, readers should carefully review the risk factors set forth in other reports or documents the Company files from time to time with the SEC, particularly the Company's Annual Report on Form 10-KSB, Quarterly Reports on Form 10-QSB and any Current Reports on Form 8-K. The following discussion should be read in conjunction with the unaudited Condensed Consolidated Financial Statements and Notes thereto in Part I, Item 1 of this Quarterly Report on Form 10-QSB and with the audited Consolidated Financial Statements and Notes thereto, together with Management's Discussion and Analysis of Financial Condition and Results of Operations, which are included in the Company's Annual Report on Form 10-KSB for the fiscal year ended December 31, 2003 as filed with the SEC. Overview The Company designs, manufactures, sells and services image-directed, computer-controlled robotic software and hardware products for use in orthopaedic and neurosurgical procedures. In 1997, the Company acquired a 100% interest in a French company, Innovative Medical Machines International, S.A. ("ISS-SA"), involved in the manufacturing and servicing of neurosurgical products. Under French law, a company whose net assets are less than 50% of its capital stock may come under the supervision and control of a regional administrative tribunal. On September 30, 2003 the Tribunal de Commerce (the "Tribunal") in Lyon, France determined that ISS-SA met the criteria for it to appoint an administrator to manage the Company's operations. The Tribunal acted after a hearing in which the Company and ISS-SA discussed the ability of ISS-SA to meet its obligations over the next four months and the Company's unwillingness to further fund its operations due to ISS-SA's history of operating losses. The Tribunal authorized the administrator to manage ISS-SA's operations pending a review of ISS-SA's operations and cash flow projections. Subsequent to its appointment, the administrator exercised control over all aspects of ISS-SA's operations including employee retention, purchasing, sales and inventory management. As a result, effective with the administrator's appointment, the Company no longer had access to the assets, personnel or records of ISS-SA. On October 30, 2003, representatives of the Company met with the Tribunal to review the status of ISS-SA. At this meeting, the Tribunal determined that ISS-SA was making progress in improving its financial position and scheduled another meeting for December 2003. Prior to such meeting, the Tribunal reevaluated its decision to allow ISS-SA to continue operating and caused the assets and operations of ISS-SA to be sold, effectively terminating ISS-SA's operations on December 23, 2003. The Company recorded a loss of $1,516,519 in connection with the liquidation of the Company's investment in ISS-SA and closure of the Company's European operations in the fourth quarter of 2003. 8

The Company's revenue consists of product revenue, product development revenue, parts and consumables and service revenue. Product revenue consists of the Company's principal orthopaedic product, the ROBODOC(R) Surgical Assistant System ("ROBODOC"), which integrates the ORTHODOC(R) Presurgical Planner ("ORTHODOC") with a computer-controlled robot for use in joint replacement surgeries. Also included in product revenue for the first quarter of 2003 are sales of the NeuroMate(TM) System ("NeuroMate"), which consists of a computer-controlled robotic arm, head stabilizer, presurgical planning workstation and proprietary software used to position and precisely hold critical tools during stereotactic brain surgery. The Company develops specialized operating software for several implant manufacturing companies. These implant manufacturers contract with the Company for the development of particular lines of new prosthesis software to be used with the ROBODOC system. The Company offers a one-year warranty for parts and labor on all ROBODOC systems generally commencing upon the completion of training and installation. In most cases, the Company's customers purchase a service contract, which includes warranty coverage (parts and labor), unspecified product maintenance updates, customer support services and various consumables required during surgical procedures. Customers not covered by warranties or service contracts are billed on a time and materials basis for service, and on a per unit basis for products. Results of Operations The Company generated a net loss for the first quarter of 2004 of $257,000 or $0.01 per basic and dilutive shares compared to net income for the first quarter of 2003 of $170,000 or $0.0 per basic and dilutive shares. The gross margin decreased by 64% during the first quarter of 2004 from the same quarter of 2003. However, the gross margin percentage increased to 62% during the first quarter of 2004 from 45% during the first quarter of 2003. Operating expenses decreased 39% from $1.2 million in the first quarter of 2003 to $0.7 million in the first quarter of 2004. Net revenue Net revenue decreased 74% from $3.0 million during the first quarter of 2003 to $0.8 million during the first quarter of 2004. The decrease in net revenue was primarily due to the elimination of $1.5 million in net revenue generated by ISS-SA and the Company's European operations, which were liquidated during the fourth quarter of 2003. The remaining reduction of $0.7 million in revenue in the first quarter of 2004, when compared to the first quarter of 2003, was primarily the result of the decreases in the first quarter of 2004 in the number of units shipped by the Company's non-European operations, with one less unit being shipped. Cost of revenue The cost of revenue decreased 82% from $1.7 million during the first quarter of 2003 to $0.3 million during the first quarter of 2004. The decrease was primarily due to the elimination of $1.1 million in cost of revenue attributable to ISS-SA and the Company's European operations. The remaining reduction in cost of revenue during the first quarter of 2004, when compared to the cost of revenue for the same period of the prior year, was due to the decreases in the number of units shipped. Gross margin percentage increased to 62% during the first quarter of 2004 when compared to 45% for the first quarter of 2003 and reflects the elimination of the Company's ISS-SA and European operations with their higher operating costs and the shipment of a refurbished Robodoc unit during the quarter. The Company generally recognizes higher margins on sales of its refurbished units. 9

Operating expenses Selling, general and administrative expense decreased 54% from $0.8 million during the first quarter of 2003 to $0.4 million during the first quarter of 2004. The primary factor in the decrease in selling, general and administrative expenses is the liquidation of ISS-SA and the Company's European operations which contributed $0.3 million of expenses during the first quarter of 2003. The remaining $0.1 million in the reduction of selling, general and administrative expense was primarily due to decreases in commission expense incurred in the first quarter of 2004 when compared to the same quarter of the previous year due to lower sales volume. Research and development expense decreased 14% during the first quarter of 2004 when compared to the first quarter of 2003. This decrease was the result of the Company's overall cost reduction efforts. The minimal impact of the closure of the Company's European operations on the Company's research and development expense is the result of substantially all such activity being performed within the Company's U.S. operations. Other income (expense), net During the first quarter of 2003, the Company recorded $43,152 primarily as the result of favorable foreign currency exchange rates for that three-month period. The Company was not affected during the first quarter of 2004 by foreign currency exchange rates. Critical Accounting Policies and Estimates The preparation of the Company's unaudited condensed consolidated financial statements requires the Company to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates the estimates, including those related to bad debts, inventories, impairment of assets, warranties, contingencies and litigation. The Company bases these estimates on historical experience and on other assumptions believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. The Company has discussed its critical accounting policies with the audit committee of the Company. Actual results may differ from these estimates under different assumptions or conditions. The Company believes the following critical accounting policies affect the Company's more significant judgments and estimates used in the preparation of the condensed consolidated financial statements: The Company recognizes revenue from sales of its products upon the completion of equipment installation and training at the end-user's site, except when the sales contract requires formal customer acceptance. Equipment sales with contractual customer acceptance provisions are recognized as revenue upon written notification of customer acceptance, which generally occurs after the completion of installation and training. Furthermore, due to business customs in Japan and the interpretation of Japanese law, all equipment sales to Japan are recognized after customer acceptance, which generally occurs after the completion of installation and training. Revenue related to maintenance and service contracts is recognized ratably over the duration of the contracts. The Company periodically evaluates the need for allowances for doubtful accounts for estimated losses resulting from the inability of the Company's customers to make required payments. If the financial condition of its customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. Where the Company's products are not covered by separate service agreements, the Company reserves against the estimated cost of product warranties at the time revenue is recognized. The warranty obligation is affected by product failure rates, material usage and service delivery costs incurred in correcting a product failure. Should actual product failure rates, material usage or service delivery costs differ from these estimates, revisions to the estimated warranty liability would be required. 10

The Company writes down inventory for estimated obsolescence or unmarketable inventory equal to the difference between the cost of inventory and the estimated market value based upon assumptions about future demand and market conditions. If actual market conditions are less favorable than those the Company projected additional inventory write-downs may be required. Property, plant and equipment are amortized over their useful lives. Useful lives are based on estimates of the period that the assets will generate revenue. Property and equipment are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Liquidity and Capital Resources The cash position of the Company is inadequate and the Company has not yet identified sources of sufficient cash to assure continuing operations. The reports of the Company's independent auditors on the 2003 and 2002 consolidated financial statements included explanatory paragraphs stating that there is substantial doubt with respect to the Company's ability to continue as a going concern. The Company has a plan to address these issues, which the Company believes will enable the Company to continue operations through the end of 2004. This plan includes obtaining additional equity or debt financing, increasing sales of the products in existing markets, increasing sales of system upgrades, and reducing operating expenses as necessary. Although the Company believes that the plan will be realized, there is no assurance that these events will occur. In the event that the Company is unsuccessful, it is possible that the Company will cease operations or seek bankruptcy protection. The condensed consolidated financial statements do not include any adjustments to reflect the uncertainties related to the recoverability and classification of assets or the amounts and classification of liabilities that may result from an inability on the Company's part to continue as a going concern. At March 31, 2004, the Company's "quick ratio" (cash and accounts receivable divided by current liabilities), a conservative liquidity measure designed to predict the Company's ability to pay bills, was only .03. It has been difficult for the Company to meet obligations, including payroll, as they come due, and the Company expects this situation to continue through 2004. Net cash used in operating activities was $219,000 for the three months ended March 31, 2004. This primarily resulted from the net loss of $257,000, plus a decrease in unearned income of $462,000, and an increase in accounts receivable of $80,000. These amounts were partially offset by an increase of $232,000 in accounts payable and $362,000 in accrued payroll and related expenses. The increase in accounts payable is directly related to delayed vendor payments. The Company expects to derive most of the cash required to support operations through sales of the ROBODOC System, continued conversion of its inventory balance into cash, as well as collection of the account receivables, and through additional financing. It is critical for the Company to obtain cash from these sources to survive in 2004. There can be no assurance given that the Company can continue to convert inventory, collect receivables or raise additional funds on acceptable terms or at all. At March 31, 2004, the Company had amounts due to the executive officers of the Company of approximately $847,000, in the aggregate, in the form of an interest bearing advance, non-interest bearing advances, deferred salaries and unreimbursed travel expenses. Approximately $269,000, $286,000 and $73,000 are included in accrued payroll and related expenses, accounts payable and accrued liabilities, respectively, and are due to Ramesh C. Trivedi, president and chief executive officer of the Company. Approximately $76,000, $20,000 and $27,000 are included in accrued payroll and related expense and accounts payable and accrued liabilities respectively, due to Leland Witherspoon, vice president of engineering of the Company. Approximately $59,000, $3,000 and $33,000 are included in accrued payroll and related expense, accounts payable and accrued liabilities, respectively, due to Charles J. Novak, chief financial officer of the Company. 11

Item 3. Controls and Procedures An evaluation was performed, as of March 31, 2004, under the supervision and with the participation of the Company's management, including its President, Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company's disclosure controls and procedures. Based on such evaluation, the Company's management has concluded that its disclosure controls and procedures were effective as of March 31, 2004. There have been no significant changes in the Company's internal controls or in other factors that could significantly affect its internal controls subsequent to March 31, 2004. Part II. Other Information Item 1. Legal Proceedings The Company is subject to legal proceedings and claims that arise in the normal course of business. The Company cannot assure that it would prevail in such matters nor can it assure that any remedy could be reached on mutually agreeable terms, if at all. Due to the inherent uncertainties of litigation, were there any such matters, the Company would not be able to accurately predict their ultimate outcome. As of March 31, 2004, there were no current proceedings or litigation involving the Company that management believes would have a material adverse impact on its financial position, results of operations, or cash flows. Item 2. Changes in Securities None Item 3. Changes in and Disagreements with Accountants None Item 4. Submission of Matters to a Vote of Security Holders None. Item 5. Other Information None. Item 6. Exhibits and Reports on Form 8-K (a) Exhibits 31.1 Certification Pursuant to Exchange Act Rule 13a-14(a) of Ramesh Trivedi 31.2 Certification Pursuant to Exchange Act Rule 13a-14(a) of Charles Novak 32.1 Certification Pursuant to Section 1350 of the Sarbanes-Oxley Act of 2002 of Ramesh Trivedi 32.2 Certification Pursuant to Section 1350 of the Sarbanes-Oxley Act of 2002 of Charles Novak (b) Reports on Form 8-K. None. 12

SIGNATURE In accordance with Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. INTEGRATED SURGICAL SYSTEMS, INC. By: /s/ CHARLES J. NOVAK ------------------------ Charles J. Novak (Principal Financial and Accounting Officer) Dated: June 4, 2004 13

Exhibit 31.1

                                  CERTIFICATION


I, Ramesh C. Trivedi, Chief Executive Officer of Integrated Surgical Systems,
Inc., certify that:

1.   I have reviewed this quarterly report on Form 10-QSB for the quarter ended
     March 31, 2004 of Integrated Surgical Systems, Inc.;

2.   Based on my knowledge, this report does not contain any untrue statement of
     a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the small business issuer as of, and for, the periods presented in this
     report;

4.   The small business issuer's other certifying officers and I are responsible
     for establishing and maintaining disclosure controls and procedures (as
     defined in Exchange Act Rules 13a-15(e) and 15d-15(e) for the small
     business issue and have:

     (a)  Designed such disclosure controls and procedures, or caused such
          disclosure controls and procedures to be designed under our
          supervision, to ensure that material information relating to the small
          business issuer, including its consolidated subsidiaries, is made
          known to us by others within those entities, particularly during the
          period in which this report is being prepared;

     (b)  Evaluated the effectiveness of the small business issuer's disclosure
          controls and procedures and presented in this report our conclusion
          about the effectiveness of the disclosure controls and procedures, as
          of the end of the period covered by this report based on such
          evaluation; and

     (c)  Disclosed in this report any change in the small business issuer's
          internal control over financial reporting that occurred during the
          small business issuer's most recent fiscal quarter (the small business
          issuer's fourth quarter in the case of an annual report) that has
          materially affected, or is reasonably likely to materially affect, the
          small business issuer's internal control over financial reporting; and

5.   The small business issuer's other certifying officer(s) and I have
     disclosed, based on our most recent evaluation of internal control over
     financial reporting, to the small business issuer's auditors and the audit
     committee of the small business issuer's board of directors (or persons
     performing the equivalent functions):

     (a)  All significant deficiencies and material weakness in the design or
          operation of internal control over financial reporting which are
          reasonably likely to adversely affect the small business issuer's
          ability to record, process, summarize and report financial
          information; and

     (b)  Any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrant's internal
          control over financial reporting.



Date: June 4, 2004                          By: /s/ RAMESH C. TRIVEDI
                                            ------------------------------------
                                            Ramesh C. Trivedi
                                            Chief Executive Officer


Exhibit 31.2

                                  CERTIFICATION


I, Charles J. Novak, Chief Financial Officer of Integrated Surgical Systems,
Inc., certify that:

1.   I have reviewed this quarterly report on Form 10-QSB for the year quarter
     ended March 31, 2004 of Integrated Surgical Systems, Inc.;

2.   Based on my knowledge, this report does not contain any untrue statement of
     a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the small business issuer as of, and for, the periods presented in this
     report;

4.   The small business issuer's other certifying officers and I are responsible
     for establishing and maintaining disclosure controls and procedures (as
     defined in Exchange Act Rules 13a-15(e) and 15d-15(e) for the small
     business issue and have:

     (a)  Designed such disclosure controls and procedures, or caused such
          disclosure controls and procedures to be designed under our
          supervision, to ensure that material information relating to the small
          business issuer, including its consolidated subsidiaries, is made
          known to us by others within those entities, particularly during the
          period in which this report is being prepared;

     (b)  Evaluated the effectiveness of the small business issuer's disclosure
          controls and procedures and presented in this report our conclusion
          about the effectiveness of the disclosure controls and procedures, as
          of the end of the period covered by this report based on such
          evaluation; and

     (c)  Disclosed in this report any change in the small business issuer's
          internal control over financial reporting that occurred during the
          small business issuer's most recent fiscal quarter (the small business
          issuer's fourth quarter in the case of an annual report) that has
          materially affected, or is reasonably likely to materially affect, the
          small business issuer's internal control over financial reporting; and

5.   The small business issuer's other certifying officer(s) and I have
     disclosed, based on our most recent evaluation of internal control over
     financial reporting, to the small business issuer's auditors and the audit
     committee of the small business issuer's board of directors (or persons
     performing the equivalent functions):

     (a)  All significant deficiencies and material weakness in the design or
          operation of internal control over financial reporting which are
          reasonably likely to adversely affect the small business issuer's
          ability to record, process, summarize and report financial
          information; and

     (b)  Any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrant's internal
          control over financial reporting.


Date: June 4, 2004                  By: /s/ CHARLES J. NOVAK
                                    ------------------------
                                    Charles J. Novak
                                    Chief Financial Officer


Exhibit 32.1

                                  CERTIFICATION



I, Ramesh C. Trivedi, Chief Executive Officer of Integrated Surgical Systems,
Inc. (the "Company"), hereby certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

     1.   The Quarterly Report on Form 10-QSB of the Company for the quarter
          ended March 31, 2004, which this certification accompanies (the
          "Periodic Report"), fully complies with the requirements of Section
          13(a) of the Securities Exchange Act of 1934; and

     2.   The information contained in the Periodic Report fairly presents, in
          all material respects, the financial condition and results of
          operations of the Company.




 Dated: June 4, 2004                         /s/ Ramesh C. Trivedi
                                             ---------------------
                                             Ramesh C. Trivedi
                                             Chief Executive Officer



Exhibit 32.2

                                  CERTIFICATION



I, Charles J. Novak, Chief Financial Officer of Integrated Surgical Systems,
Inc. (the "Company"), hereby certify, pursuant to 18 U.S.C. Section 1350, as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

     1.   The Quarterly Report on Form 10-QSB of the Company for the quarter
          ended March 31, 2004, which this certification accompanies (the
          "Periodic Report"), fully complies with the requirements of Section
          13(a) of the Securities Exchange Act of 1934; and

     2.   The information contained in the Periodic Report fairly presents, in
          all material respects, the financial condition and results of
          operations of the Company.




 Dated: June 4, 2004                          /s/ Charles J. Novak
                                              --------------------
                                              Charles J. Novak
                                              Chief Financial Officer