Surgery – Instruments – Orthopedic instrumentation
Patent
1997-06-30
1999-12-21
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
A61B 1700
Patent
active
06004327&
ABSTRACT:
A ratcheting compression device is provided which is very strong, which can be customized in length, which can be retightened periodically to maintain compression, which allows precise placement and alignment of bones with both grossly tuned compression and finely tuned compression, and in which only a limited inventory of parts is required. The two-piece compression device comprises (a) a novel first piece having a bone screw located at a first end thereof and having a ratcheting means located near the second end thereof and comprising teeth having their crests lying substantially in a plane and (b) a novel second piece comprising an anti-rotation means which acts in cooperation with the ratcheting means of the first piece to compress two segments of bone together.
In yet other embodiments, two embodiments of a driver are provided for quickly driving the stop onto the ratcheting means to a desired extent.
In a further embodiment, a customized method for compressing and fixing a first bone segment and a second bone segment together is provided.
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Asnis Stanley Edwin
Crombie John Stephen
Buiz Michael
Stryker Technologies Corporation
Trinh Vikki
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