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US 6,537,321 B1Granted
Joint base for a hip joint endoprosthesis
AssigneePlus Endoprothetik AG
InventorWilli Horber
Life of this patent
Estimating the term…
Abstract
A joint base for a hip joint endoprosthesis includes an elongate base element and a base insert. The base element has a longitudinal axis and an outline which, in a front view, is of asymmetrical design at least relative to the longitudinal axis. The base insert has at a front side a semi-spherical hollow for accommodating a joint ball.
Claims19
A hip joint endoprosthesis, comprising:
- an elongate base element having a longitudinal axis extending substantially in the direction of elongation and a transverse axis perpendicular to said longitudinal axis, and which, in a plan view looking into a cup portion of said base element, defines an outline formed by a circumferential outer edge of the base element, wherein the outline is of asymmetrical geometric shape at least relative to the longitudinal axis to provide for a defined multi-point tensioning within an acetabulum to ensure lasting stable implantation, and wherein the geometric shape defined by the outline of the plan view of the base element is formed by joining two circles which have centers that are spaced apart a predetermined distance and which are arranged relative to each other at an angle relative to a transverse axis of the base element such that one of two elongated sides of the outline formed by the circumferential outer edge of the base element has an indentation;
- and
- a base insert having a front side and, at the front side, a semi-spherical hollow for accommodating a joint ball.
Dependencies are inferred from the claim text.