US4787383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic knee implantation
Assignee: Howmedica Osteonics Corp
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Filing: 1987-01-16
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Granted: 1988-11-29
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Expires: 2007-01-16
Abstract
Abstract A prosthetic knee is implanted after cutting the femor and tibia in the proper manner with the aid of instruments which include axial alignment guides and a series of cutting jigs.
Inventors
- 👤 Robert V. Kenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:15
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/14; A61B17/15; A61B17/154; A61B17/155; A61B17/157
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
81 words
A tibial positioning/fixation jig comprising a plate having a substantial area of its lower surface being planar, a pair of spaced parallel tabs extending downwardly below said planar surface, an osteotome cut-out extending through said plate, an inclined drill hole extending through said plate on each side of said cut-out, a block connected to said plate, a pair of inclined vertical alignment pin holes extending through said block, and a pair of horizontally disposed adjustably movable rods extending through said block.
Claim 2
Dependent Claim
81 words
A tibial positioning/fixation jig comprising a plate having a substantial area of its lower surface being planar, a pair of spaced parallel tabs extending downwardly below said planar surface, an osteotome cut-out extending through said plate, an inclined drill hole extending through said plate on each side of said cut-out, a block connected to said plate, a pair of inclined vertical alignment pin holes extending through said block, and a pair of horizontally disposed adjustably movable rods extending through said block.
Claim 3
Dependent Claim
23 words
The jig of claim 1 including attaching means on the front wall of said block for attachment of an axial guide holder thereto.
References Cited (Backward Citations)
US4211228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |