Self-centering, anti-seizing acetabular liner
AssigneeDePuy Synthes Products, Inc.
InventorsJohn M. Armacost, James A. Caywood, Ryan C. Keefer
Life of this patent
Estimating the term…
Abstract
A liner adapted for insertion into an acetabular shell for use in hip arthroplasty. The liner includes a concave inner surface adapted to engage a femoral head. The liner also includes an outer surface adapted to engage the acetabular shell and a rim that extends between the inner surface and the outer surface. The outer surface includes a locking section extending from the rim, a composite-curved section extending from the locking section at a first transition point, and a dome section extending from the composite-curved section, wherein at the first transition point, the composite-curved section is tangential to the locking section.
Claims15
A liner adapted for insertion into an acetabular shell for use in hip arthroplasty, the liner comprising:
- a concave inner surface adapted to engage a femoral head;
- an outer surface adapted to engage the acetabular shell;
- and
- a rim extending between the inner surface and the outer surface, wherein the outer surface includes a locking section extending from the rim, a composite-curved section extending from the locking section at a first transition point, and a dome section extending from the composite-curved section, wherein at the first transition point, the composite-curved section is tangential to the locking section.
10-15. (canceled)
A liner for use in arthroplasty, the liner comprising an inner surface and an outer surface, the inner surface being generally concave, the outer surface adapted to engage an acetabular shell, the outer surface including a locking section and a composite-curved section, wherein the composite-curved section extends tangentially from the locking section.
Dependencies are inferred from the claim text.