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
An acetabular component comprising a hybrid bearing, the hybrid bearing configured to fit into an acetabular cup having a first inner circumference comprising a reverse tapered portion, said hybrid bearing comprising:
- a) a polar bearing;
- b) a rim bearing, wherein the rim bearing is arc-shaped to allow reduction in effective circumference of said rim bearing and to facilitate insertion of said rim bearing into said acetabular cup;
- and
- c) a locking component for securing said rim bearing radially against said acetabular cup, wherein said locking component fits between two ends of the arc-shaped rim bearing to secure the rim bearing against said reverse tapered portion of said acetabular cup;
- wherein an interior surface of said polar bearing and an interior surface of said rim bearing form a hybrid bearing surface configured to contact a proximal femoral head.
A system comprising an acetabular component and an acetabular cup having a first inner circumference comprising a reverse tapered portion, the acetabular component comprising a hybrid bearing, the hybrid bearing configured to fit into the acetabular, said hybrid bearing comprising:
- a) a polar bearing;
- b) a rim bearing, wherein the rim bearing is arc-shaped to allow reduction in effective circumference of said rim bearing and to facilitate insertion of said rim bearing into said acetabular cup;
- and
- c) a locking component for securing said rim bearing radially against said acetabular cup, wherein said locking component fits between two ends of the arc-shaped rim bearing to secure the rim bearing against said reverse tapered portion of said acetabular cup;
- wherein an interior surface of said polar bearing and an interior surface of said rim bearing form a hybrid bearing surface configured to contact a proximal femoral head.
Dependencies are inferred from the claim text.