Fixture and prosthesis including the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 26, 2003
Grant Date -
N/A
app pub date -
Feb 18, 1997
filing date -
Jan 19, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a fixture for insertion into and permanent anchorage in a cavity (32) formed in bone tissue. The fixture is made of a fixture member (2), which has an insertion end surface (10) and a cylindrical peripheral surface (6) provided with screw threads, and a plurality of circumferentially-spaced cutting recesses (9), which are formed in a forward, self-tapping end portion (7) of the threaded peripheral surface (6) adjacent to the insertion end surface (10) and which open axially into the insertion end surface (10). A plurality of circumferentially-spaced tissue-collecting and tissue-distributing grooves (17) are formed in a rear, non-self-tapping portion (8) of the threaded peripheral surface (6). The grooves (17) open radially outwards and extend at least partially in the longitudinal direction of the fixture member (2), and each groove (17) is, at a forward end thereof, connected to one of the cutting recesses (9) for collecting cut-off bone material (B) circumferentially around the inner wall of the cavity (32) during the insertion of the fixture.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 16 Citation Count
- A61F Class
- 24.74 % this patent is cited more than
- 22 Age