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US 10,945,849 B2Granted
Joint socket implant
AssigneeJossi Holding AG
InventorsPascal Bürgi, Christian Gugler, Daniel Nadler
Life of this patent
Estimating the term…
Abstract
An outer shell (1) for a joint socket implant, in particular for an acetabular implant, which comprises a convex outer face (3) and a concave inner face (4) for receiving an inner shell. The concave inner face (4) has at least partially a toothing system (7), in particular a circular circumferential region (6) thereof. Via the toothing system (7), an inhibition of the rotatability of the two shells, relative to one another, can be achieved upon insertion of the inner shell into the outer shell (1).
Claims15
A joint socket implant, comprising:
- an outer shell with a convex outer face and a concave inner face, which has a toothing system in a circular circumferential region,
- wherein flanks of the toothing system are oriented parallel to a longitudinal central axis of the outer shell,
- a tooth profile has a tooth height defined as the difference between a radius of a tip circle and a radius of a root circle of the toothing system,
- an inner shell inserted into the outer shell,
- a hardness of the outer shell is greater than that of the inner shell,
- the region of the inner shell coming into contact with the toothing system has a size, relative to the tip circle of the toothing system, such that an inhibition of the rotatability of the two shells, relative to each other, is achievable by the material of the inner shell being displaced by the toothing system,
- wherein a hollow space remains between the flanks of adjacent teeth and the inner shell inserted into the toothing system.
4 more elements
Dependencies are inferred from the claim text.