US6506216B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tibial tray with adjustable keel
Assignee: DePuy Products Inc
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Filing: 2000-06-16
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Granted: 2003-01-14
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Expires: 2020-06-16
Abstract
Abstract A tibial prosthesis includes a tibial platform having a medial-lateral center and an inferior surface matable with a resected proximal tibia, and a modular keel that is fixable to the inferior surface and adjustable in a medial-lateral direction with respect to the medial-lateral center of the tibial platform.
Inventors
- 👤 Diana F. McCue
- 👤 Scott E. Dutiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/38; A61F2/389; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30225; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30476; A61F2002/30507; A61F2002/30514; A61F2002/30535; A61F2002/30537; A61F2002/30538; A61F2002/3054; A61F2002/30553; A61F2002/30604; A61F2002/30606; A61F2002/30616; A61F2002/30667; A61F2002/3069; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30777; A61F2002/30784; A61F2002/30785; A61F2002/30878; A61F2002/30884; A61F2002/30891; A61F2002/30896; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2250/00; A61F2250/0004; A61F2250/0008; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
91 words
A tibial prosthesis comprising: a tibial tray having a medial-lateral center and an inferior surface matable with a resected proximal tibia; and a modular keel comprising a tray mating portion and a keel portion, the keel portion having a plurality of wing elements suitable for anchoring the keel within the proximal tibia, the tray mating portion being fixable to the inferior surface and adjustable in a medial-lateral direction with respect to the medial-lateral center of the tibial tray to allow medial-lateral adjustment of the keel portion with respect to the tray.
Claim 2
Dependent Claim
91 words
A tibial prosthesis comprising: a tibial tray having a medial-lateral center and an inferior surface matable with a resected proximal tibia; and a modular keel comprising a tray mating portion and a keel portion, the keel portion having a plurality of wing elements suitable for anchoring the keel within the proximal tibia, the tray mating portion being fixable to the inferior surface and adjustable in a medial-lateral direction with respect to the medial-lateral center of the tibial tray to allow medial-lateral adjustment of the keel portion with respect to the tray.
Claim 3
Dependent Claim
18 words
The prosthesis of claim 1 , further comprising a stem receivable within the central canal of a tibia.
Claim 4
Dependent Claim
17 words
The prosthesis of claim 2 , wherein the stem is modular and matable with the modular keel.
Claim 5
Dependent Claim
59 words
The prosthesis of claim 1 , wherein the tibial tray includes at least one slot extending in a medial-lateral direction and at least one mating element, fixable to the modular keel, extends through the at least one slot to secure the modular keel to the tibial tray at a preselected offset from the medial-lateral center of the tibial tray.
Claim 6
Dependent Claim
18 words
The prosthesis of claim 4 , wherein four mating elements secure the modular keel to the tibial tray.
Claim 7
Dependent Claim
18 words
The prosthesis of claim 4 , wherein one mating element secures the modular keel to the tibial tray.
Claim 8
Dependent Claim
32 words
The tibial prosthesis of claim 1 , wherein the tibial tray has a superior surface, the prosthesis further comprising a tibial bearing element fixed to the superior surface of the tibial tray.
Claim 9
Dependent Claim
24 words
The tibial prosthesis of claim 7 , wherein the modular keel is adjustable in the medial-lateral direction with respect to the tibial bearing element.
Claim 10
Dependent Claim
103 words
A tibial prosthesis comprising: a tibial tray having a medial-lateral center, an inferior surface matable with a resected proximal tibia, two or more slots extending in a medial-lateral direction, and two or more mating elements extending through the two or more slots; a modular keel fixable to the inferior surface and adjustable in a medial-lateral direction with respect to the medial-lateral center of the tibial tray; wherein the two or more mating elements extend through the two or more slots to secure the modular keel to the tibial tray and fix the medial-lateral position of the keel with respect to the tibial tray.
Claim 11
Dependent Claim
103 words
A tibial prosthesis comprising: a tibial tray having a medial-lateral center, an inferior surface matable with a resected proximal tibia, two or more slots extending in a medial-lateral direction, and two or more mating elements extending through the two or more slots; a modular keel fixable to the inferior surface and adjustable in a medial-lateral direction with respect to the medial-lateral center of the tibial tray; wherein the two or more mating elements extend through the two or more slots to secure the modular keel to the tibial tray and fix the medial-lateral position of the keel with respect to the tibial tray.
Claim 12
Dependent Claim
18 words
The prosthesis of claim 9 , wherein four mating elements secure the modular keel to the tibial tray.
Claim 13
Dependent Claim
18 words
The prosthesis of claim 9 , further comprising a stem receivable within the central canal of a tibia.
Claim 14
Dependent Claim
17 words
The prosthesis of claim 11 , wherein the stem is modular and matable with the modular keel.
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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) | 2006-01-13 | 2006-07-15 | 2007-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-01-13 | 2010-07-15 | 2011-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-01-13 | 2014-07-15 | 2015-01-14 | $7700.00 | Window Closed / Lapsed |