<DOCUMENT>
<TYPE>EX-21
<SEQUENCE>3
<FILENAME>a2087868zex-21.txt
<DESCRIPTION>EXHIBIT 21
<TEXT>
<Page>


                                   EXHIBIT 21

                         SUBSIDIARIES OF THE REGISTRANT

          SUBSIDIARY                          ORGANIZED UNDER LAWS OF
          ----------                          -----------------------

ABIOMED Cardiovascular, Inc.                         Delaware
ABIOMED R&D, Inc.                                    Delaware
Abiomed Research & Development, Inc.               Massachusetts
ABIOMED R&D, Inc.                                    Delaware
ABIODENT, Inc.                                       Delaware
ABD Holding Company, Inc.                            Delaware
ABIOMED B.V.                                        Netherlands
BeneCor Heart Systems, Inc.                          Michigan

</TEXT>
</DOCUMENT>