Prosthetic Liner
AssigneeDePuy Products, Inc.
InventorGerhard J.A. Drescher
Life of this patent
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Abstract
A prosthetic liner includes a convex exterior surface, a concave interior surface and a rim portion connecting the interior surface and the exterior surface. The liner includes a plurality of recesses and a plurality of fingers. Each of the plurality of recesses is formed in the exterior surface of the liner without extending to the interior surface of the liner. The plurality of fingers is positioned in the plurality of recesses and each of the plurality of fingers is connected to the exterior surface and extends toward the rim portion. The plurality of fingers may be resiliently moveable in the plurality of recesses. The plurality of fingers may be integral with the exterior surface of the liner. The rim portion may define a plane into which at least one of the plurality of fingers extends.
Claims20
A prosthetic liner, said liner comprising:
- a convex exterior surface;
- a concave interior surface;
- a rim portion connecting the interior surface and the exterior surface;
- a plurality of recesses, each of the plurality of recesses formed in the exterior surface of the liner without extending to the interior surface of the liner;
- and
- a plurality of fingers positioned in the plurality of recesses, each of the plurality of fingers connected to the exterior surface and extending toward the rim portion.
An acetabular hip system comprising:
- a hip cup;
- a hip stem;
- and
- a liner configured to engage the hip cup and the hip stem, the liner comprising,
- a body portion including an exterior surface configured to engage the hip cup,
- an interior surface configured to engage the hip stem, a rim connecting the interior surface to the exterior surface,
- at least one recess formed on the exterior surface and extending into the body portion without extending to the interior surface, and
- at least one finger connected to the body, the at least one finger positioned in the at least one recess.
A liner for use in an orthopedic implant shell to form a hip cup to cooperate with a hip stem to form a hip prosthetic implant, said liner comprising:
- a first surface configured to cooperate with the shell;
- a second surface opposed to the first surface and configured for articulating cooperation with the hip stem;
- a rim connecting the first surface to the second surface;
- a first void extending into the liner from the rim and spaced from the first surface and from the second surface;
- and
- a pair of spaced apart second voids extending from the first surface to the first void, the first surface, the first void, and the pair of second voids defining a finger therebetween, the finger configured to assist in securing said liner to the shell.
Dependencies are inferred from the claim text.