US4963154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetabular cup as part of a hip joint prosthesis
Assignee: Johnson and Johnson Professional Products GmbH
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Filing: 1989-06-06
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Granted: 1990-10-16
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Expires: 2009-06-06
Abstract
Abstract Acetrabular cup as part of a hip joint prosthesis is composed of an outer support ring and a plastic inner socket insertable into the support ring. The acetabular cup includes a covering cap provided with at least one metal surface which covers the part of the inner socket not surrounded by the support ring and whose metal outer contour supplements the socket to give it the spherical shape of an essentially closed hemisphere or spherical cap.
Inventors
- 👤 Emanuel Anapliotis
- 👤 Curt Kranz
- 👤 Wiebke Ploetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:49
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2/30721; A61F2/30744; A61F2/30767; A61F2002/30001; A61F2002/30316; A61F2002/30317; A61F2002/30322; A61F2002/30329; A61F2002/30476; A61F2002/30495; A61F2002/305; A61F2/30771; A61F2002/3082; A61F2002/30827; A61F2002/3085; A61F2002/30858; A61F2002/30861; A61F2002/30873; A61F2/3094; A61F2002/30968; A61F2002/3241; A61F2002/3412; A61F2002/3414; A61F2002/345; A61F2220/00; A61F2220/0025; A61F2250/00; A61F2250/0014; A61F2250/0026; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00389; A61F2310/00395; A61F2310/00407
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
An acetabular cup for implanting in an acetabulum, comprising: a metal outer support ring having inner and outer surfaces, said outer surface defining part of a hemisphere, means on said outer surface defining threads for screwing said acetabular cup into an acetabulum, and means on said inner surface defining an opening; a plastic inner socket having an inner and outer surface, said inner socket being received in said opening of said outer support ring, said outer surface of said inner socket being divided into first and second parts, only said first part of said outer surface of said inner socket being directly adjacent to and covered by said outer support ring, means on said inner socket defining an opening for receiving a joint ball of a hip joint prothesis therein; and a covering cap adjacent said outer support ring and said inner socket, said covering cap having a metal surface and covering said second part of said outer surface of said inner socket, and said covering cap further defining the hemisphere defined in part by said outer surface of said outer support ring for thereby defining a substantially complete hemisphere.
Claim 2
Dependent Claim
190 words
An acetabular cup for implanting in an acetabulum, comprising: a metal outer support ring having inner and outer surfaces, said outer surface defining part of a hemisphere, means on said outer surface defining threads for screwing said acetabular cup into an acetabulum, and means on said inner surface defining an opening; a plastic inner socket having an inner and outer surface, said inner socket being received in said opening of said outer support ring, said outer surface of said inner socket being divided into first and second parts, only said first part of said outer surface of said inner socket being directly adjacent to and covered by said outer support ring, means on said inner socket defining an opening for receiving a joint ball of a hip joint prothesis therein; and a covering cap adjacent said outer support ring and said inner socket, said covering cap having a metal surface and covering said second part of said outer surface of said inner socket, and said covering cap further defining the hemisphere defined in part by said outer surface of said outer support ring for thereby defining a substantially complete hemisphere.
Claim 3
Dependent Claim
36 words
Acetabular cup as defined in claim 11, further comprising mechanical means for connecting said covering cap to said inner socket, and wherein the covering cap is connected with the inner socket exclusively by said mechanical means.
Claim 4
Dependent Claim
35 words
Acetabular cup as defined in claim 2, wherein said mechanical means comprises a snap-on device disposed between covering cap and said inner socket for causing the covering cap to be snapped onto the inner socket.
Claim 5
Dependent Claim
19 words
Acetabular cup as defined in claim 3, wherein the snap-on device corresponds to the shape of a snap button.
Claim 6
Dependent Claim
26 words
Acetabular cup as defined in claim 11, wherein an annular space exists between the covering cap and the support ring when the acetabular cup is assembled.
Claim 7
Dependent Claim
34 words
Acetabular cup as defined in claim 5, wherein the covering cap has a cylindrical outer wall which, when the acetabular cup is assembled, extends parallel to a corresponding inner wall of the support ring.
Claim 8
Dependent Claim
14 words
Acetabular cup as defined in claim 11, wherein the cap is made of titanium.
Claim 9
Dependent Claim
20 words
Acetabular cup as defined in claim 11, further comprising a porous coating on an outer face of the covering cap.
Claim 10
Dependent Claim
31 words
Acetabular cup as defined in claim 8, further comprising a peripheral edge on said covering cap adjacent to and surrounding said outer face, said peripheral edge having no porous coating thereon.
Claim 11
Dependent Claim
28 words
Acetabular cup as defined in claim 9, further comprising means on said peripheral edge for defining a concentric step having a substantially cylindrical, outwardly oriented, smooth wall region.
References Cited (Backward Citations)
DE8429350U1
Cited
US3723995A
Cited
US3875593A
Cited
US4164794A
Cited
DE2839661A1
Cited
EP0065482A2
Cited
DE3147707A1
Cited
US4770661A
Cited
GB2138304A
Cited
US4795469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |