US5326359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knee prosthesis with adjustable centro-medullary stem
Assignee: Tornier SAS
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Filing: 1992-11-24
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Granted: 1994-07-05
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Expires: 2012-11-24
Abstract
Abstract A prosthesis of the knee which includes an articular element including a slideway in which is mounted the base of a bushing which threadingly receives a centro-medullary stem. The centro-medullary stem extends through the bushing so as to be engageable with impressions formed in the slideway to thereby lock the bushing and stem to the slideway.
Inventors
- 👤 Jean-Loup Oudard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:39
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/38; A61F2/3859
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
A prosthesis of the knee comprising a biocompatible plate means having a slideway having a bottom wall, a groove extending along said slideway, a plurality of spaced impressions in said bottom wall, a bushing having a base, said base being slideably receivable within said slideway so as to be engageable within said groove, a bore extending through said bushing and having a tapped portion, a centro-medullary stem having an end and a threaded portion, and threaded portion being securable to said tapped portion of said bushing so as to retain said end of said centro-medullary stem within one of said impressions to thereby secure said centro-medullary stem relative to said plate means.
Claim 2
Dependent Claim
112 words
A prosthesis of the knee comprising a biocompatible plate means having a slideway having a bottom wall, a groove extending along said slideway, a plurality of spaced impressions in said bottom wall, a bushing having a base, said base being slideably receivable within said slideway so as to be engageable within said groove, a bore extending through said bushing and having a tapped portion, a centro-medullary stem having an end and a threaded portion, and threaded portion being securable to said tapped portion of said bushing so as to retain said end of said centro-medullary stem within one of said impressions to thereby secure said centro-medullary stem relative to said plate means.
Claim 3
Dependent Claim
25 words
The prosthesis of claim 1 in which said end of said centro-medullary stem is convex so as to seat in said one of said impressions.
Claim 4
Dependent Claim
20 words
The prosthesis of claim 1 in which said bore through said bushing is obliquely aligned with respect to said base.
Claim 5
Dependent Claim
31 words
The prosthesis of claim 3 in which said bore includes a first section having relatively smooth side walls and said threaded portion being counter sunk with respect to said first section.
Claim 6
Dependent Claim
20 words
The prosthesis of claim 1 in which said plate means includes spaced side walls and is generally U-shaped in cross-section.
Claim 7
Dependent Claim
13 words
The prosthesis of claim 1 in which said groove is dovetailed in configuration.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-04 | 1998-01-03 | 1998-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-04 | 2002-01-03 | 2002-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-04 | 2006-01-03 | 2006-07-05 | $7700.00 | Window Closed / Lapsed |