US4919676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal shell for an artificial hip joint socket
Assignee: Sulzer AG
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Filing: 1988-06-15
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Granted: 1990-04-24
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Expires: 2008-06-15
Abstract
Abstract The outer shell possesses openings in the polar or apical region which serve to backfill the implanted shell with spongious bone material. The openings are separated by a web which extends through the axis of symmetry of the outer shell and which has a threaded bore to receive an insertion instrument. The instrument is centrally guided on an axial direction to facilitate control and alignment of the outer shell during insertion, especially in the case of outer shells to be screwed in with a self-cutting thread.
Inventors
- 👤 K. Zweymuller
- 👤 Rudolf Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2/46; A61F2/4603; A61F2/4609; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30133; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30535; A61F2002/30594; A61F2/30767; A61F2/30771; A61F2002/3082; A61F2002/30827; A61F2002/3085; A61F2002/30858; A61F2002/30873; A61F2002/3401; A61F2002/3403; A61F2002/3406; A61F2002/3453; A61F2002/3462; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0015; A61F2250/00; A61F2250/0014; A61F2250/0036; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
An outer metal shell for an artificial hip joint socket, said shell comprising a peripheral wall defining a cavity for receiving a plastic socket element and having an opening in an apical region and a self-cutting thread on an exterior surface of said wall; and bridging means extending across said apical region to subdivide said opening into a plurality of subopenings to permit the introduction and compaction of bone material into a surgically produced recess in a pelvic bone, said means including a centrally disposed threaded bore for threadably receiving an insertion instrument.
Claim 2
Dependent Claim
93 words
An outer metal shell for an artificial hip joint socket, said shell comprising a peripheral wall defining a cavity for receiving a plastic socket element and having an opening in an apical region and a self-cutting thread on an exterior surface of said wall; and bridging means extending across said apical region to subdivide said opening into a plurality of subopenings to permit the introduction and compaction of bone material into a surgically produced recess in a pelvic bone, said means including a centrally disposed threaded bore for threadably receiving an insertion instrument.
Claim 3
Dependent Claim
15 words
A shell as set forth in claim 1 wherein said wall defines a truncated cone.
Claim 4
Dependent Claim
25 words
A shell as set forth in claim 1 wherein said bridging means includes a single web extending diametrically across said opening in said apical region.
Claim 5
Dependent Claim
16 words
A shell as set forth in claim 3 wherein said web is integral with said wall.
Claim 6
Dependent Claim
55 words
An outer shell for an artificial hip joint socket, said shell defining a cavity for receiving a plastic socket element, an opening in an apical region, a web extending across said apical region and including a centrally disposed threaded bore for threadably receiving an insertion instrument and a self-cutting thread on an exterior peripheral surface.
Claim 7
Dependent Claim
55 words
An outer shell for an artificial hip joint socket, said shell defining a cavity for receiving a plastic socket element, an opening in an apical region, a web extending across said apical region and including a centrally disposed threaded bore for threadably receiving an insertion instrument and a self-cutting thread on an exterior peripheral surface.
Claim 8
Dependent Claim
64 words
An outer shell for an artificial hip joint socket, said shell having a solid peripheral wall of truncated shape defining a cavity for receiving a plastic socket element, an opening in an apical region, a web extending across said apical region and including a centrally disposed threaded bore for threadably receiving an insertion instrument, and a self-cutting thread on an exterior of said wall.
Claim 9
Dependent Claim
64 words
An outer shell for an artificial hip joint socket, said shell having a solid peripheral wall of truncated shape defining a cavity for receiving a plastic socket element, an opening in an apical region, a web extending across said apical region and including a centrally disposed threaded bore for threadably receiving an insertion instrument, and a self-cutting thread on an exterior of said wall.
References Cited (Backward Citations)
US3685058A
Cited
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Cited
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US4715859A
Cited
FR2591471A1
Cited
FR2598609A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |