EX-21 5 a2212947zex-21.htm EX-21

EXHIBIT 21

THORATEC CORPORATION

        Subsidiaries of the Registrant as of the date of this report:

Subsidiary
  Jurisdiction of Incorporation
or Organization 		  Percentage of
Ownership 		 

Continuum Services, Inc. 

   Delaware     100 %

Thoratec Europe Limited

   United Kingdom     100 %

Thoratec LLC

   Delaware     100 %

Thoratec Switzerland GmbH

   Switzerland     100 %