US4666449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hip joint socket
Assignee: Protek AG
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Filing: 1984-02-29
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Granted: 1987-05-19
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Expires: 2004-02-29
Abstract
Abstract The hip joint socket is formed of a socket body of relatively elastic material, for example of plastic, and one or more reinforcement rings which are shrunk fit on the socket body under a prestress. The rings impart rigidity to the hip joint socket. The rings may protrude from the contour of the socket body or may have projections which protrude from the contour of the socket body in order to improve fixation in a cement bed or pelvic cavity.
Inventors
- 👤 Otto Frey
- 👤 Peter G. Niederer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30158; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2002/30336; A61F2002/30337; A61F2002/30535; A61F2002/30604; A61F2/30767; A61F2/30771; A61F2002/30904; A61F2002/3241; A61F2002/3453; A61F2002/3462; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0026; A61F2310/00; A61F2310/00005; A61F2310/00011
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
104 words
An implantable hip joint socket comprising a socket body having a hemispherical socket for receiving a spherical femur head and having a base diameter in a diametric plane and an outer shell including at least one annular shoulder there, said shoulder having a flank conically tapered relative to a central axis of said body; and at least one closed reinforcement ring disposed on said shoulder proximal to said plane and holding said body under a prestress, said ring having a surface mating with said shoulder flank and tapered in the same direction as the tapering of said shoulder flank relative to said central axis.
Claim 2
Dependent Claim
104 words
An implantable hip joint socket comprising a socket body having a hemispherical socket for receiving a spherical femur head and having a base diameter in a diametric plane and an outer shell including at least one annular shoulder there, said shoulder having a flank conically tapered relative to a central axis of said body; and at least one closed reinforcement ring disposed on said shoulder proximal to said plane and holding said body under a prestress, said ring having a surface mating with said shoulder flank and tapered in the same direction as the tapering of said shoulder flank relative to said central axis.
Claim 3
Dependent Claim
20 words
A hip joint socket as set forth in claim 1 wherein said ring projects from a contour of said body.
Claim 4
Dependent Claim
19 words
A hip joint socket as set forth in claim 2 wherein said ring has an outwardly projecting lug thereon.
Claim 5
Dependent Claim
88 words
An implantable joint socket comprising a socket body having a hemispherical socket for receiving a spherical femur head and having a base diameter in a diametric plane and at least one annular shoulder in an outer surface thereof, said shoulder having a flank conically tapered relative to a central axis of said body; and a reinforcement ring disposed on said shoulder in the plane of said socket and proximal to said diametric plane with a surface mating with said flank, and ring holding said body under a prestress.
Claim 6
Dependent Claim
88 words
An implantable joint socket comprising a socket body having a hemispherical socket for receiving a spherical femur head and having a base diameter in a diametric plane and at least one annular shoulder in an outer surface thereof, said shoulder having a flank conically tapered relative to a central axis of said body; and a reinforcement ring disposed on said shoulder in the plane of said socket and proximal to said diametric plane with a surface mating with said flank, and ring holding said body under a prestress.
Claim 7
Dependent Claim
24 words
A hip joint socket as set forth in claim 4 wherein said body is made of plastic and said ring is made of metal.
Claim 8
Dependent Claim
24 words
A hip joint socket as set forth in claim 4 wherein said shoulder flank is tapered inwardly towards the socket end of said body.
Claim 9
Dependent Claim
20 words
A hip joint socket as set forth in claim 4 wherein said ring is closed and shrunk-fit on said body.
Claim 10
Dependent Claim
51 words
A hip joint socket comprising a plastic socket body having a hemispherical socket and a plurality of annular shoulders disposed in stair-like manner in an outer surface thereof; and a plurality of metal reinforcement rings, each said ring being disposed on a respective shoulder and holding said body under a prestress.
Claim 11
Dependent Claim
51 words
A hip joint socket comprising a plastic socket body having a hemispherical socket and a plurality of annular shoulders disposed in stair-like manner in an outer surface thereof; and a plurality of metal reinforcement rings, each said ring being disposed on a respective shoulder and holding said body under a prestress.
Claim 12
Dependent Claim
20 words
A hip joint socket as set forth in claim 8 wherein each ring projects from a contour of said body.
Claim 13
Dependent Claim
21 words
A hip joint socket as set forth in claim 9 wherein at least one ring has an outwardly projecting lug thereon.
Claim 14
Dependent Claim
31 words
A hip joint socket as set forth in claim 8 wherein each shoulder has a conically tapered flank and each ring has a tapered surface mating with a respective tapered flank.
Claim 15
Dependent Claim
46 words
A hip joint socket comprising a socket body having a hemispherical socket and an outer shell including a plurality of annular shoulders disposed in stair-like manner; and a plurality of discrete closed reinforcement rings respectively disposed on said shoulders and holding said body under a prestress.
Claim 16
Dependent Claim
46 words
A hip joint socket comprising a socket body having a hemispherical socket and an outer shell including a plurality of annular shoulders disposed in stair-like manner; and a plurality of discrete closed reinforcement rings respectively disposed on said shoulders and holding said body under a prestress.
Claim 17
Dependent Claim
40 words
A hip joint socket as set forth in claim 12 wherein each said shoulder has a flank conically tapered relative to a central axis of said body and each said ring has a surface mating with a respective shoulder flank.
Claim 18
Dependent Claim
67 words
An implantable hip joint socket comprising a socket body having a hemispherical socket for receiving a spherical femur head and having a base diameter in a diametric plane and at least one annular shoulder in an outer surface thereof; and a closed reinforcement ring shrunk-fit on said shoulder in the plane of said socket and proximal to said diametric plane and holding said body under a prestress.
Claim 19
Dependent Claim
67 words
An implantable hip joint socket comprising a socket body having a hemispherical socket for receiving a spherical femur head and having a base diameter in a diametric plane and at least one annular shoulder in an outer surface thereof; and a closed reinforcement ring shrunk-fit on said shoulder in the plane of said socket and proximal to said diametric plane and holding said body under a prestress.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |