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US 6,187,050 B1Granted
Oblong acetabular cup
AssigneeJohnson & Johnson Professional, Inc.
InventorsFarid Bruce Khalili, Pierre S. Ostiguy, Jr., Robert E. Sommerich
Life of this patent
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Abstract
An acetabular cup having an outer surface elongated in a superior/lateral direction is effective to anatomically transfer load to the acetabulum and reduce the likelihood of bone fracture during implantation into the acetabulum. The outer surface has a first portion defined by a first radius and a second portion defined by a second radius. The second radius is offset from the first radius in superior and lateral directions to elongate the outer surface of the acetabular cup.
Claims14
An acetabular cup, comprising:
- a generally hemispherical shell having a superior portion, an inferior portion, a medial portion, and a lateral portion, the shell further including a concave inner surface and a generally convex outer surface having a pole and an equator,
- wherein the outer surface has a first portion defined by a first radius originating from a first point centrally located proximate the equator and a second portion defined by a second radius originating from a second point offset from the first point in a superior and a lateral direction so as to form a superior offset and a lateral offset, such that the shell is elongated.
An acetabular cup, comprising;
- a concave inner surface;
- and
- a convex outer surface having a first portion defined by a first radius and a second portion defined by a second radius, the outer surface further having a superior portion, an inferior portion, a medial portion and a lateral portion,
- wherein the second portion effects an elongation of the outer surface of the acetabular cup in a superior/lateral direction, the elongation being defined by a superior offset and a lateral offset.
1 more element
Dependencies are inferred from the claim text.