**Exhibit4.1**

 

|  | INCORPORATED  UNDER THE LAWS OF CANADA WORLD HEART TECHNOLOGY for LIFE This certifies that  NUMBER WNC2335596 SHARES Is the Registered Holder of ISIN: CA9809054005  CUSIP: 980905400 FULLY PAID AND NON-ASSESSABLE COMMON SHARES, WITHOUT NOMINAL  OR PAR VALUE, OF WORLD HEART CORPORATION transferable only on the books of  the corporation by the registered holder hereof in person or by Attorney duly  authorized in writing upon surrender of this certificate properly endorsed. This  certificate is not valid until countersigned and registered by the Registrar  and Transfer Agent duly authorized by the Corporation. IN WITNESS WHEREOF the  corporation has caused this Certificate to be signed by the facsimile  signature of its duly authorized officers. /s/ Jal S. Jassawalla President  and CEO /s/ Virginia Schweitzer Secretary DATED: OCTOBER 29, 2008 COUNTERSIGNED  AND REGISTERED CIBC MELLON TRUST COMPANY REGISTRAR AND TRANSFER AGENT OR MELLON  INVESTOR SERVICES LLC CO-TRANSFER AGENT AND CO-REGISTRAR By: Authorized Signature  The shares represented by this certificate are transferable at the office of  CIBC Mellon Trust Company in Toronto, Ontario and Mellon Investor Services,  LLC in Jersey City, NJ, USA. 84740150 G PROOF – 0053116 SECURITY INSTRUCTIONS  ON REVERSE VOIR LES INSTRUCTIONS DE SECURITE AU VERSO 999999999 G3499520 |
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|  | SECURITY  INSTRUCTIONS - INSTRUCTIONS DE SECURITE THIS IS WATERMARKED PAPER, DO NOT  ACCEPT WITHOUT NOTING WATERMARK. HOLD TO LIGHT TO VERIFY WATERMARK. PAPIER  FILIGRANE, NE PAS ACCEPTER SANS VERIFIER LA PRESENCE DU FILIGRANE POUR CE  FAIRE, PLACER A LA LUMIERE. For value received, the undersigned hereby  sell(s), assign(s) and transfer(s) unto (Print name(s) of person(s) to whom  the securities are being transferred and the address for the register) shares  (number of shares if blank, deemed to be all) of the Company represented by  this certificate, and hereby irrevocably constitutes and appoints the  attorney of the undersigned to transfer the said securities with full power  of substitution in this matter. Dated Signature Guarantee(s)* (the transfer  cannot be processed without acceptable guarantees of all signatures) Transferor(s)  Signature(s)* * For transfers signed by the registered holder(s), their  signature(s) must correspond with the name(s) on the certificate in every  particular, without any changes. In addition, every signature must be  Signature Guaranteed by a Canadian Schedule 1 chartered bank, a major trust  company in Canada, or a member of one of the recognized medallion programs -  Securities Transfer Agents Medallion Program (STAMP), Stock Exchanges  Medallion Program (SEMP) or New York Stock Exchange, Inc. Medallion Signature  Program (MSP). THE CLASS OF SHARES THAT THIS CERTIFICATE REPRESENTS HAS  RIGHTS, PREVILEGES, RESTRICTIONS AND CONDITIONS ATTACHED THERETO AND THE  CORPORATION WILL FURNISH TO A SHARHOLDER, ON DEMAND AND WITHOUT CHARGE, A  FULL COPY OF THE TEXT OF (i) THE RIGHTS, PRIVELEGES, RESTRICTIONS AND  CONDITIONS ATTACHED TO EACH CLASS AUTHORIZED TO BE ISSUED AND TO EACH SERIES  INSOFAR AS THE SAME HAVE BEEN FIXED BY THE DIRECTORS, AND (ii) THE AUTHORITY  OF THE DIRECTORS TO FIX THE RIGHTS, PRIVELEGES, RESTRICTIONS AND CONDITIONS  OF SUBSEQUENT SERIES. |
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