<PAGE>
                                                                   Exhibit 31.1


  Certification of Principal Executive Officer and Principal Financial Officer
          Regarding Facts and Circumstances Relating to Annual Reports


I, Lawrence Saper, Chairman of the Board and Chief Executive Officer, certify
that:

     1.   I have reviewed this annual report on Form 10-K/A of Datascope Corp.;

     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 in order 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 registrant as of, and for, the periods presented in
          this report;

     4.   The registrant's other certifying officer(s) 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
          registrant and we 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 registrant, 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 registrant's disclosure
               controls and procedures and presented in this report our
               conclusions 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 registrant's
               internal control over financial reporting that occurred during
               the registrant's most recent fiscal quarter (the registrant's
               fourth fiscal quarter in the case of an annual report) that has
               materially affected, or is reasonably likely to materially
               affect, the registrant's internal control over financial
               reporting; and

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

          (a)  All significant deficiencies in the design or operation of
               internal control over financial reporting which are reasonably
               likely to adversely affect the registrant'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.


May 17, 2004


                                   /s/ Lawrence Saper
                                   -------------------------------------------
                                   Lawrence Saper
                                   Chairman of the Board and Chief Executive
                                   Officer

<PAGE>
  Certification of Principal Executive Officer and Principal Financial Officer
          Regarding Facts and Circumstances Relating to Annual Reports


I, Murray Pitkowsky, Senior Vice President, Chief Financial Officer and
Treasurer, certify that:

     1.   I have reviewed this annual report on Form 10-K/A of Datascope Corp.;

     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 in order 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 registrant as of, and for, the periods presented in
          this report;

     4.   The registrant's other certifying officer(s) 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
          registrant and we 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 registrant, 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 registrant's disclosure
               controls and procedures and presented in this report our
               conclusions 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 registrant's
               internal control over financial reporting that occurred during
               the registrant's most recent fiscal quarter (the registrant's
               fourth fiscal quarter in the case of an annual report) that has
               materially affected, or is reasonably likely to materially
               affect, the registrant's internal control over financial
               reporting; and

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

          (a)  All significant deficiencies in the design or operation of
               internal control over financial reporting which are reasonably
               likely to adversely affect the registrant'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.


May 17, 2004


                                   /s/ Murray Pitkowsky
                                   --------------------------------------------
                                   Murray Pitkowsky
                                   Senior Vice President, Chief Financial
                                   Officer and Treasurer