Patent US4828566A successfully refreshed from Google Patents.
US4828566A
Expired / Lapsed
US
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Hip joint implant
Assignee: Sulzer AG
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Filing: 1987-02-04
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Granted: 1989-05-09
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Expires: 2007-02-04
Abstract
Abstract The shank is provided with a recess in the proximal medial region and a U-shaped wire mesh structure is secured within the recess. The wire mesh structure provides for an ingrowth of bone tissue at the medial narrow side of the shank and an absorption of shear micro movements between a bone and the implant. The mesh structure can be secured in place by rivets or by weld seams.
Inventors
- 👤 Peter Griss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:46
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30907; A61F2/32; A61F2/36; A61F2/3662; A61F2/367; A61F2/46; A61F2/4603; A61F2/4607; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30131; A61F2002/30316; A61F2002/30329; A61F2002/30433; A61F2002/30451; A61F2002/30909; A61F2002/3678; A61F2002/368; A61F2002/4619; A61F2220/00; A61F2220/0025; A61F2220/0041; A61F2220/0058; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
A hip joint implant comprising a shank having a blade-like portion extending in conically widening manner form a distal end toward a proximal end with a lenticular disk shaped cross-section in a proximal medial region, a neck extending from said blade-like portion at said proximal end and a pin for receiving a joint head at said proximal end; a U-shaped wire mesh structure secured to said proximal medial region of said blade-like portion and about a medical narrow side of said blade-like portion; and at least one rivet passing through said mesh structure and said shank for securing said mesh structure to said shank.
Claim 2
Dependent Claim
104 words
A hip joint implant comprising a shank having a blade-like portion extending in conically widening manner form a distal end toward a proximal end with a lenticular disk shaped cross-section in a proximal medial region, a neck extending from said blade-like portion at said proximal end and a pin for receiving a joint head at said proximal end; a U-shaped wire mesh structure secured to said proximal medial region of said blade-like portion and about a medical narrow side of said blade-like portion; and at least one rivet passing through said mesh structure and said shank for securing said mesh structure to said shank.
Claim 3
Dependent Claim
19 words
A hip joint implant as set forth in claim 1 wherein said wire mesh structure is of multi-layer construction.
Claim 4
Dependent Claim
30 words
A hip joint implant as set forth in claim 1 wherein siad means includes a plurality of weld seams along at least a peripheral edge of said wire mesh structure.
Claim 5
Dependent Claim
31 words
A hip joint implant as set forth in claim 1 wherein said blade-like poriton is recessed in said proximal medial region and receives said wire mesh structure therein in flush relation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |