Patent US5879397A successfully refreshed from Google Patents.
US5879397A
Expired / Lapsed
US
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Tapered hip joint socket
Assignee: Cerasiv GmbH Innovatives Keramik Engineering
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Filing: 1994-10-17
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Granted: 1999-03-09
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Expires: 2014-10-17
Abstract
Abstract Disclosed is a hip joint socket for insertion into bone tissue, having an outer metal shell and an inner antifriction liner. The antifriction liner is fixed in the metal shell by means of a taper lock. To safeguard the socket insert and antifriction liner against misalignment and separation, and enable a non-destructive removal of the liner and replacement thereof, the angle (α) of the taper lock of the liner in the shell is between 10° and 25°.
Inventors
- 👤 Hartmut Kalberer
- 👤 Hans-Georg Pfaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4637; A61F2/32; A61F2/34; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2002/30345; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/3082; A61F2002/4641; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179; F; F16; F16C; F16C2316/00; F16C2316/10; F16C33/00; F16C33/02; F16C33/04; F16C33/043; F16C33/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
47 words
A hip joint socket for insertion into bone tissue, comprising: an outer metal shell; and an inner antifriction liner of a ceramic material removably fixed in the metal shell solely by means of a taper lock having a taper lock angle (α) of from 10° to 25°.
Claim 2
Dependent Claim
47 words
A hip joint socket for insertion into bone tissue, comprising: an outer metal shell; and an inner antifriction liner of a ceramic material removably fixed in the metal shell solely by means of a taper lock having a taper lock angle (α) of from 10° to 25°.
Claim 3
Dependent Claim
18 words
The hip joint socket of claim 1 wherein the angle (α) of the taper lock is about 18°.
Claim 4
Dependent Claim
35 words
The hip joint socket of claim 1 wherein the metal shell on the surface of contact with the antifriction liner is adapted with at least one recess disposed to enable removal of the antifriction liner.
Claim 5
Dependent Claim
12 words
The hip socket of claim 3 having two diametrically opposite disposed recesses.
Claim 6
Dependent Claim
72 words
A hip joint socket for insertion into bone tissue, comprising: an outer metal shell and an inner antifriction liner removably fixed in the metal shell solely by means of a taper lock having a taper lock angle (α) angle of from 10° to 25° wherein the metal shell on the surface of contact with the antifriction liner is adapted with at least one recess disposed to enable removal of the antifriction liner.
Claim 7
Dependent Claim
72 words
A hip joint socket for insertion into bone tissue, comprising: an outer metal shell and an inner antifriction liner removably fixed in the metal shell solely by means of a taper lock having a taper lock angle (α) angle of from 10° to 25° wherein the metal shell on the surface of contact with the antifriction liner is adapted with at least one recess disposed to enable removal of the antifriction liner.
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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) | 2002-03-08 | 2002-09-07 | 2003-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-08 | 2006-09-07 | 2007-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-08 | 2010-09-07 | 2011-03-09 | $7700.00 | Window Closed / Lapsed |