Retractor for heart valve surgery

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Description

FIG. 1 is a front isometric view of a retractor for heart valve surgery according to the invention showing our new design.

FIG. 2 is a rear isometric view thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a rear elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
3750652 August 1973 Sherwin
5755661 May 26, 1998 Schwartzman
5776054 July 7, 1998 Bobra
5980455 November 9, 1999 Daniel et al.
Patent History
Patent number: D422705
Type: Grant
Filed: Feb 24, 1999
Date of Patent: Apr 11, 2000
Inventors: Tibor B. Koros (Moorpark, CA), Gabriel J. Koros (Moorpark, CA)
Primary Examiner: Stella Reid
Assistant Examiner: I Simmons
Attorney: David O'Reilly
Application Number: 0/101,065
Classifications
Current U.S. Class: Speculum, Dilator Or Retractor (25) (D24/135)
International Classification: 2402;