US4871368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artifical acetabulum
Assignee: Protek AG
•
Filing: 1988-03-28
•
Granted: 1989-10-03
•
Expires: 2008-03-28
Abstract
Abstract The artifical acetabulum is formed of an outer metal shell having an annular shoulder, an acetabular body having an annular flange seated on the shoulder and a threaded ring threaded into the shell in order to clamp the flange of the acetabular body against the shoulder of the shell. The acetabular body is constructed in an asymmetric manner with an extension to prevent dislocations of a joint head and can be rotated into precise position before tightening of the threaded ring in place.
Inventors
- 👤 Heinz Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:56
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30771; A61F2/32; A61F2/34; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61F2/46; A61F2/4603; A61F2/4609; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30405; A61F2002/30476; A61F2002/30495; A61F2002/30795; A61F2002/3085; A61F2002/3401; A61F2002/3403; A61F2002/3443; A61F2220/00; A61F2220/0025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
An artificial acetabulum comprising an outer metal shell having a cavity and an annular shoulder about said cavity; a one piece synthetic acetabular body mounted in said cavity of said metal shell, said body including a socket for receiving a spherical joint head and an annular flange seated on said shoulder of said shell; and a ring mounted in said metal shell and against said flange to clamp said flange against said shoulder to prevent displacement of said body in said shell.
Claim 2
Dependent Claim
82 words
An artificial acetabulum comprising an outer metal shell having a cavity and an annular shoulder about said cavity; a one piece synthetic acetabular body mounted in said cavity of said metal shell, said body including a socket for receiving a spherical joint head and an annular flange seated on said shoulder of said shell; and a ring mounted in said metal shell and against said flange to clamp said flange against said shoulder to prevent displacement of said body in said shell.
Claim 3
Dependent Claim
39 words
An artificial acetabulum as set forth in claim 1 wherein said body has an extension extending from said shell in asymmetric relation for preventing dislocations of the joint head from said socket upon extreme deflections of a hip joint.
Claim 4
Dependent Claim
20 words
An artificial acetabulum as set forth in claim 2 wherein said shell has at least two circumferential rows of bores.
Claim 5
Dependent Claim
17 words
An artificial acetabulum as set forth in claim 1 wherein said ring is threaded into said shell.
Claim 6
Dependent Claim
74 words
An artificial acetabulum comprising a metal shell having an annular shoulder and a threaded bore disposed on a central axis; a synthetic acetabular body mounted in said shell, said body including a socket for receiving a spherical joint head, an annular flange seated on said shoulder and an extension extending from said shell in asymmetric relation to said shell axis; and a ring threaded into said shell to clamp said flange against said shoulder.
Claim 7
Dependent Claim
74 words
An artificial acetabulum comprising a metal shell having an annular shoulder and a threaded bore disposed on a central axis; a synthetic acetabular body mounted in said shell, said body including a socket for receiving a spherical joint head, an annular flange seated on said shoulder and an extension extending from said shell in asymmetric relation to said shell axis; and a ring threaded into said shell to clamp said flange against said shoulder.
Claim 8
Dependent Claim
83 words
An artificial acetabulum comprising an outer metal shell having a hemispherical cavity and an annular shoulder about said cavity; a synthetic acetabular body rotatably mounted in said cavity of said metal shell, said body including a socket for receiving a spherical joint head and an annular flange seated on said shoulder of said shell; and a ring mounted in said metal shell and against said flange to clamp said flange against said shoulder to secure said body against rotation relative to said shell.
Claim 9
Dependent Claim
83 words
An artificial acetabulum comprising an outer metal shell having a hemispherical cavity and an annular shoulder about said cavity; a synthetic acetabular body rotatably mounted in said cavity of said metal shell, said body including a socket for receiving a spherical joint head and an annular flange seated on said shoulder of said shell; and a ring mounted in said metal shell and against said flange to clamp said flange against said shoulder to secure said body against rotation relative to said shell.
Claim 10
Dependent Claim
39 words
An artificial acetabulum as set forth in claim 6 wherein said body has an extension extending from said shell in asymmetric relation for preventing dislocations of the joint head from said socket upon extreme deflections of a hip joint.
Claim 11
Dependent Claim
17 words
An artificial acetabulum as set forth in claim 6 wherein said ring is threaded into said shell.
References Cited (Backward Citations)
GB321761A
Cited
US3574368A
Cited
GB1371335A
Cited
US3740769A
Cited
DE2319098A1
Cited
US4795470A
Cited
US4690581A
Cited
US4650491A
Cited
US4795469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |