Surgery – Instruments – Orthopedic instrumentation
Patent
1997-01-21
1997-10-07
Tucker, Guy V.
Surgery
Instruments
Orthopedic instrumentation
606100, A61B 1756
Patent
active
056742258
ABSTRACT:
The extraction tool comprises a sleeve part (13) which can be coupled to a neck portion (6) of a shaft which is to be withdrawn, and a coupling element (15) in the form of a collet which can be fitted onto the neck portion (6). The collet has an elongate section with wall segments (16a) which can be clamped against the neck portion (6), and comprises fittings (23) which can be guided into a constriction (24) of the neck portion (6), and a head part (17) which projects beyond the neck portion (6), wherein the head part (17) can be clamped against the sleeve part (13) via a bias screw (18). The coupling element (15) is loosely connected to the sleeve part (13) and fitted onto the neck portion (6). It can then be clamped by approaching the bias screw (16) against the sleeve part (13) and against the neck portion (6). A rigid yet easily releasable connection between the extraction tool and the shaft to be withdrawn is thus achieved in a simple manner.
REFERENCES:
patent: 3857389 (1974-12-01), Amstutz
patent: 4686971 (1987-08-01), Harris
patent: 4919153 (1990-04-01), Chin
patent: 4993410 (1991-02-01), Kimsey
patent: 5064427 (1991-11-01), Burkinshaw
patent: 5350381 (1994-09-01), Melton
Protek AG
Tucker Guy V.
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