<SEC-DOCUMENT>0000080255-14-000649-index.html : 20141110
<SEC-HEADER>0000080255-14-000649.hdr.sgml : 20141110
<ACCEPTANCE-DATETIME>20141110144822
ACCESSION NUMBER:		0000080255-14-000649
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20141110
DATE AS OF CHANGE:		20141110

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			THORATEC CORP
		CENTRAL INDEX KEY:			0000350907
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		IRS NUMBER:				942340464
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1228

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-32553
		FILM NUMBER:		141208148

	BUSINESS ADDRESS:	
		STREET 1:		6035 STONERIDGE DR
		CITY:			PLEASANTON
		STATE:			CA
		ZIP:			94588
		BUSINESS PHONE:		9258478600

	MAIL ADDRESS:	
		STREET 1:		6035 STONERIDGE DR
		CITY:			PLEASANTON
		STATE:			CA
		ZIP:			94588

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	THORATEC CARDIOSYSTEMS INC
		DATE OF NAME CHANGE:	20010220

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	THORATEC LABORATORIES CORP
		DATE OF NAME CHANGE:	19920703

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PRICE T ROWE ASSOCIATES INC /MD/
		CENTRAL INDEX KEY:			0000080255
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY & COMMODITY BROKERS, DEALERS, EXCHANGES & SERVICES [6200]
		IRS NUMBER:				520556948
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		100 EAST PRATT ST
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
		BUSINESS PHONE:		(410)345-6603

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 89000
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21289
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>thor13goct14.htm
<DESCRIPTION>THOR AS OF 10/31/2014
<TEXT>
Document 1 - file: thor13goct14.htm

</DOCUMENT>
</SEC-DOCUMENT>