Patent ID: 6132469
Filing Date: 2000-10-17
Classification: A61F

Abstract:
In combination, an acetabular prosthetic apparatus and an extractor,(a) the acetabular prosthetic apparatus comprising:a shell having an exterior surface adapted to engage an acetabulum and an interior surface;a liner having a partially spherical interior surface operable to receive a ball, an exterior surface of said liner engaging said interior surface of said shell, said liner being secured in said shell;(b) the extractor comprising:a first arm;a second arm, said arms having engagement sections;a collar located adjacent to said arms, said collar having a projecting edge;a first shaft extending through said collar and being coupled to said arms;said arms operably moving toward and away from each other when said shaft is respectively moved in a first direction and a second direction concurrently with said arms operably moving toward and away from said collar, said first direction being opposite of said second direction; anda substantially flat shoulder of said shell having multiple depressions;(c) said projecting edge of said collar abutting against said shoulder of said shell concurrently with said engagement sections of said arms being received in said multiple depressions of said shell whereby said arms are provided access to said liner; andsaid arms of said extractor engaging and applying inwardly compressive forces against said liner when said shaft is moved in said first direction, said collar contacting against a portion of said shell and allowing said arms to longitudinally pull said liner out of said shell when said shaft is moved in said first direction.