FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   ABIOMED INC 2. Date of Event Requiring Statement (Month/Day/Year) 12/11/2007 3. Issuer Name and Ticker or Trading Symbol WORLD HEART CORP [WHRT] (Last) (First) (Middle) 22 CHERRY HILL DRIVE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) DANVERS, MA 01923 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
8% Secured Convertible Promissory Note	  (1)	12/11/2017	Common Stock	2,858,861	$ 1.7489 (2)	D	Â
Warrant (right to buy)	  (3)	12/11/2012	Common Stock	3,400,000	$ 0.01	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ABIOMED INC 22 CHERRY HILL DRIVE DANVERS, MA 01923	Â	  X	Â	Â

Signatures

/s/ Michael R. Minogue, Chairman, CEO and President for ABIOMED, Inc.		12/20/2007
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	All or any portion of the principal amount of the Note then outstanding shall be convertible at any time and from time to time from after December 11, 2007. $1 million of the Note is outstanding as of December 11, 2007 and an additional $4,000,000 is to be funded on or about January 3, 2007.
(2)	The principal amount of the Note is convertible at $1.7489, subject to anti-dilution adjustments in the event that World Heart Corporation issues securities at a lower effective price, at any time. The Note will accrue interest at 8% per annum and, at the option of ABIOMED, the interest may be converted into common shares at the then market value.
(3)	This warrant is immediately exercisable for up to 680,000 shares of common stock and will become exercisable for the remaining 2,720,000 shares of common stock on or about January 3, 2008.

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