Apparatus for constraining a socket bearing in an artificial joint
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United States of America Patent
Stats
-
Jun 25, 1985
Grant Date -
N/A
app pub date -
Nov 21, 1983
filing date -
Nov 21, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ball and socket joint for implanting in the body is provided which comprises (1) a ball; (2) a cup with a spherical cavity, said cup to be affixed to bone; (3) a projection associated with the cup and extending into the spherical cavity at the geometric pole of the cavity; and (4) a bearing member surrounding a portion of the ball and rotatable within said spherical cavity, said bearing member including a walled aperture for receiving the projection, the rotation of the bearing within the cavity being constrained by engagement of a wall of the aperture with the projection.
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