Patent ID: 6136034
Filing Date: 2000-10-24
Classification: A61F

Abstract:
A head-receiving cup for a ball and socket joint implant, said cup comprising a body, an articular surface and a mountable back surface, the articular surface of which, when the head-receiving cup is suitably mounted in suitable receiving stock, mates in gliding contact with a smooth external surface of a corresponding ball joint head of a ball and socket head-containinq joint component when said corresponding component is also suitably mounted in suitable receiving stock, and the mountable back surface being generally partially spherical and including small, widely dispersed cement spacer elevation members extending from the back surface to provide for an appropriately thick cement mantle and intended to assure an optimally proficient, implant-stabilizing cement mantle which is universally consistent and technically routine to implant,wherein:said spacer elevation members include:an elevated block or button centrally positioned on and extending from the back surface; anda plurality of rectangularly-shaped members in block form to provide a block top and side walls, said block top having a series of grooves thereon, said side walls being angled such that said members are dove tailed, and said plurality of members oriented in a series of concentric rows in relation to said elevated block or button; andthere are, concentrically bordering each series of rows of rectangularly-shaped members, areas of the back surface having a series of grooves; andsaid cup is monolithically made from plastic.