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US 2015/0351918 A1Published application
Hybrid acetabular bearing for artificial hip
AssigneeCornerstone Partners LLC
InventorsJohn H. CURRIER, Zachary M. CURRIER
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Abstract
The invention features acetabular components for an artificial hip. The invention also features methods and tools for assembling a hip prosthesis that includes the acetabular components of the invention.
Claims14
A hybrid bearing surface acetabular component, comprising:
- an acetabular cup for fitting with a patient's acetabulum;
- a hybrid bearing for fitting with the acetabular cup, the hybrid bearing including a polar portion for fitting with a first chamber of the acetabular cup, and a rim bearing for fitting with a second chamber of the acetabular cup and atop the polar portion, and
- a locking component for displacing the rim bearing radially outward against an interior surface of the second chamber, to secure the hybrid bearing within the acetabular cup.
A hybrid bearing surface acetabular component, comprising:
- an acetabular cup for fitting with a patient's acetabulum, the acetabular cup including:
- a first chamber defined by a morse taper profile about an inner circumference thereof, and
- a second chamber having a circumferential reverse tapered portion therein;
- and
- a hybrid bearing for fitting with the acetabular cup, the hybrid bearing including:
- a polar portion for fitting within the first chamber and having an edge about its outer circumference that is complementary to the morse taper profile, and
- a rim bearing for fitting with the second chamber and atop the polar portion, the rim bearing having a circumferential groove and an angled sidewall for fitting against the reverse tapered portion, and a rim for covering a rim of the acetabular cup, when the rim bearing is inserted in the second chamber;
- and
- a locking component for fitting between two open ends of the rim bearing, to secure the rim bearing against the reverse tapered portion and within the second chamber.
6 more elements
A hybrid bearing for an acetabular cup, comprising:
- a polar portion for fitting within the acetabular cup, and
- an open-ended rim bearing for fitting atop the polar portion and partially within the acetabular cup, such that a circumferential lip of the rim bearing covers a rim of the acetabular cup;
- and
- a locking component for fitting between the open ends of the rim bearing to displace the rim bearing radially outward against an interior surface of the acetabular cup;
- the locking component having a lip for covering the rim of the acetabular cup between the open ends of the rim bearing.
2 more elements
Dependencies are inferred from the claim text.