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US 10,631,992 B2Granted
Multi-curvature liners for reversed shoulder replacement
AssigneeZimmer, Inc.
InventorAndrew Hopkins
Life of this patent
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Abstract
A reverse shoulder replacement system including a humeral liner defining a split curvature bearing surface that includes a plurality of curvature regions. The plurality of curvature regions are configured to engage a glenosphere of a glenoid implant individually or in combination to provide an improved fit between the glenosphere and the humeral liner.
Claims17
A reverse shoulder replacement system, comprising:
- a humeral liner defining a split curvature bearing surface, the split curvature bearing surface including a plurality of curvature regions including at least:
- a first curvature region having a first curvature, and
- a second curvature region having a second curvature, wherein the first and second curvatures are different;
- a humeral implant having a humeral stem insertable into a humerus, wherein the humeral liner is positionable on an end of the humeral stem;
- a first glenoid implant having a first curved exterior surface that matches the first curvature of the first curvature region;
- and
- a second glenoid implant having a second curved exterior surface that matches the second curvature of the second curvature region;
- wherein the first and second curvature regions of the split curvature bearing surface allow use of the humeral liner with, in the alternative, the first glenoid implant and the second glenoid implant.
5 more elements
A. reverse shoulder replacement system, comprising:
- a humeral liner defining a split curvature bearing surface, the split curvature bearing surface including a first curvature region defined by a first curvature and a second curvature region defined by a second curvature, wherein the first curvature is different than the second curvature;
- a first glenoid implant including a first glenoid bearing surface defined by a first diameter that corresponds to the first curvature;
- and
- a second glenoid implant, including a second glenoid bearing surfaces defined by a second diameter that corresponds to the second curvature;
- wherein the first and second curvature regions of the split curvature bearing surface allow use of the humeral liner with either of the first and second glenoid implants.
2 more elements
A reverse shoulder replacement system, comprising:
- a humeral liner comprising a liner body including a first side defining a liner bearing surface and an opposing second side defining an attachment feature structured for engagement with a humeral implant, the liner bearing surface defining a plurality of curvature regions including at least a first curvature region having a first curvature defined by a first radius and a second curvature region having a second curvature defined by a second radius, wherein the first radius and the second radius are different,
- the humeral implant including a humeral stem insertable into a humerus, wherein the humeral liner is positionable on an end of the humeral stern;
- a first glenoid implant including a first curved exterior surface that matches the first curvature of the first curvature region;
- and
- a second glenoid implant including a second curved exterior surface that matches the second curvature of the second curvature region;
- wherein upon engagement of the first glenoid implant with the humeral liner, a radial gap is formed between the first curved exterior surface and the second curvature region;
- and
- wherein upon engagement of the second glenoid implant with the humeral liner, an axial gap is formed between the second curved exterior surface and the first curvature region.
5 more elements
Dependencies are inferred from the claim text.