Artificial acetabulum
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United States of America Patent
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Apr 29, 1997
Grant Date -
N/A
app pub date -
Jun 13, 1995
filing date -
Jun 15, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The acetabulum (1) comprises a semispherical support shell (2d) whose inner surface (20) has at least three retaining means (2b) which protrude into the interior. Furthermore, the acetabulum (1) comprises a semispherical inner shell (3) which can be inserted into the correspondingly dimensioned semispherical support shell (2d). The outer surface (30) of the inner shell (3) has at least one recess (3b) extending in a helical manner, in such a way that the inner shell (3) can be rotated into the support shell (2d) with a screw motion, thereby resulting in operative connection between the protruding retaining means (2b) of the support shell (2d) and the recess (3b) extending in a helical manner of the inner shell (3), so that the inner shell (3) is retained in the support shell (2d).
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