Artificial acetabulum

Details Artificial acetabulum Artificial acetabulum

1995-06-13

1997-04-29

Milano, Michael J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

403343, A61F 232

Patent

active

056244649

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).

REFERENCES:
patent: 4871368 (1989-10-01), Wagner
patent: 4919677 (1990-04-01), Stuhmer
patent: 5092897 (1992-03-01), Forte
patent: 5222984 (1993-06-01), Forte
patent: 5314490 (1994-05-01), Wagner
patent: 5458649 (1995-10-01), Spotorno

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