Patent ID: 9180013
Filing Date: 2015-11-10
Classification: A61F,Y10T

Abstract:
1. An acetabular shell for use in hip arthroplasty, the shell comprising: a first wall having an outer surface, an inner surface, and a rim, wherein the rim of the first wall extends continuously around an entire circumference of the outer and inner surfaces; and a flexible second wall extending from the outer surface of the first wall, the second wall having an outer surface, an inner surface, and a rim, the second wall being provided by a plurality of flanges which are arranged around the first wall, in which adjacent flanges are separated by slits which are cut into the second wall and extend from the rim of the second wall aligned with the longitudinal axis of the shell, wherein the flexible second wall extends around an entire circumference of the outer and inner surfaces, interrupted only by the slits; wherein the rim of the second wall is spaced outwardly from the rim of the first wall, and wherein the rim of the second wall is separated from the rim of the first wall by a recess, wherein both the rim of the second wall and the rim of the first wall are located opposite an apex near an equator of the cup such that as the acetabular shell is placed in the hip, the flexible second wall is adapted to deflect without the first wall deflecting.