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US 2016/0193053 A1Published application
Polylock insert for an artificial hip joint
AssigneeCeramTec GmbH
InventorsStefan Leyen, Uwe Bunz
Life of this patent
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Abstract
The invention relates to a hip joint prosthesis comprising a ceramic inner sliding cup that, on its outside, is surrounded by a plastic covering, for inserting into an outer metal cup or for directly implanting with the aid of bone cement. A ball head, which is mounted on a shaft, articulates inside the inner sliding cup, and said shaft can be anchored inside the femur. In order to increase the strength with regard to tilting and turning, the exterior of the sliding cut is provided with a structuring.
Claims20
A hip joint prosthesis comprising:
- an inner sliding cup made of ceramic material that is surrounded on its outside by a plastics covering, for insertion into an outer metal cup or for direct implantation with the aid of bone cement,
- wherein a ball head that is arranged on a shaft, which can be anchored in the femur, can be articulated in the inner sliding cup, wherein the sliding cup has a structuring on its outside,
- wherein the structuring is provided with large radii in the notch base, and
- wherein the notch radius at the notch base amounts to more than 0.5 mm.
1 more element
Dependencies are inferred from the claim text.