Centering cap for a prosthetic hip stem

- Zimmer, Inc.
Description

FIG. 1 is a perspective view of a centering cap for a prosthetic hip stem showing my new design;

FIG. 2 is an enlarged perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a cross-sectional view thereof taken along lines 4--4 of FIG. 3;

FIG. 5 is a top plan view thereof taken in the direction of lines 5--5 of FIG. 3;

FIG. 6 is a lateral side view thereof;

FIG. 7 is a cross-sectional view thereof taken along lines 7--7 of FIG. 3; and,

FIG. 8 is a cross-sectional view thereof taken along lines 8--8 of FIG. 5.

The broken lines in FIG. 1 showing a representative hip prosthesis are for illustrative purposes only and form no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D232005 July 1974 Farling
3053251 September 1962 Black et al.
3605123 September 1971 Hahn
3793650 February 1974 Ling et al.
4080666 March 28, 1978 Fixel
4268920 May 26, 1981 Engelbrecht et al.
4285071 August 25, 1981 Nelson et al.
4314381 February 9, 1982 Koeneman
4404692 September 20, 1983 Eftekhar
4417571 November 29, 1983 Nelson et al.
4523587 June 18, 1985 Frey
4563778 January 14, 1986 Roche et al.
4566138 January 28, 1986 Lewis et al.
4718911 January 12, 1988 Kenna
4752296 June 21, 1988 Buechel et al.
Foreign Patent Documents
0041591 February 1981 EPX
0086879 November 1982 EPX
0179626 October 1985 EPX
0187903 October 1985 EPX
1409053 October 1975 GBX
2104391A March 1983 GBX
2153233A August 1985 GBX
Other references
  • Dow Corning Wright--"Unique Distal Sleeve"--Apr. 1986 JBJS ad. Howmedica--"Precision Hip System"--Mar. 1986 JBJS ad. S & G Implants--"Implast Bone Cement" ad--No date available. Howmedica--"The Exeter Hip"--Nov. 1980 Brit JBJS ad. DePuy ad--"The CML Cemented Medullary Locking Hip system"--JBJS, Jul. 1988. Osteonics Corp. ad--"Constant Concepts, Evolving Designs"--JBJS, Oct. 1988.
Patent History
Patent number: D339865
Type: Grant
Filed: Dec 22, 1986
Date of Patent: Sep 28, 1993
Assignee: Zimmer, Inc. (Warsaw, IN)
Inventors: Perry A. Geremakis (Warsaw, IN), Roy D. Crowninshield (Warsaw, IN), Jack E. Parr (North Webster, IN), Carl H. Jacobs (South Bend, IN)
Primary Examiner: Stella Reid
Attorney: Margaret L. Geringer
Application Number: 7/1,921
Classifications
Current U.S. Class: Prosthesis Or Implant (D24/155)