Wear reduced acetabular component
AssigneeDePuy Orthopaedics, Inc.
InventorsJon Serbousek, Frank S. Bono
Life of this patent
Estimating the term…
Abstract
A bearing component includes an interrupted articular face suitable for mating with a corresponding joint face. The interrupted articular face of the bearing component is defined by a plurality of bearing platforms integral with the face where either recesses extend between the bearing platforms or said platforms protrude from the articular face in order to minimize surface area of articulation for the corresponding joint face.
Claims26
A bearing component for a prosthesis, said bearing component comprising an interrupted articular face constructed of a plastics material suitable for mating with a corresponding joint face, the interrupted articular face includes a mouth extending about a circumference of the face, at least one recess intersecting the mouth and a bearing surface being defined by at least one bearing platform integral with the articular face and suitable to engage the corresponding joint face and to permit movement therewith.
A bearing component for a prosthesis of the ball-joint type, said bearing component comprising an interior providing an internal cavity suitable for receiving a ball, said cavity being defined by a spherically concave interrupted articular face integral with the bearing component and suitable for engaging the ball, said bearing component further a mouth extending comprising about the internal cavity and the circumference of said interrupted articular face, said interrupted articular face being constructed of a plastics material and including at least one recess intersecting the mouth.
A bearing component for a prosthesis of the ball-joint type, said bearing component comprising an interior providing an internal cavity suitable for receiving a ball, said cavity being defined by a spherically concave interrupted articular bearing face integral with the bearing component and suitable for engaging the ball, and a mouth extending about the internal cavity and the circumference of the face, said interrupted articular bearing face being constructed of a plastics material, and including a smooth generally hemispherical surface intersecting the mouth and including bearing platforms protruding into the internal cavity.
A prosthetic component assembly adapted for use in an acetabular cup fixed to the acetabulum, the assembly comprising
- a femoral element including a ball, and
- an acetabular bearing including an outer surface configured to be received in the acetabular cup and an interrupted articular face constructed of a plastics material adapted to mate with the ball of the femoral element, the interrupted articular face including a mouth extending about a circumference of said articular face and a bearing surface being defined by at least one bearing platform integral with the articular face and adapted to engage the corresponding ball to maximize available ball distribution and permit articulating movement of the ball within the bearing and at least one recess intersecting the mouth.
Dependencies are inferred from the claim text.