Clamping arrangements for an orthopedic fixation device and use

Details Clamping arrangements for an orthopedic fixation device and use Clamping arrangements for an orthopedic fixation device and use

1998-07-02

1999-11-16

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 61, A61B 1770

Patent

active

059849282

ABSTRACT:
The clamping arrangement (1, 6) comprises a clamping body (6) and an implant pin (1) fastened therein. The clamping body (6) has a recess (7) for receiving the implant pin (1) and a slit (10), starting at the recess (7), by means of which two clamping jaws (8, 9) are formed which, when pressed together, cause the fastening of the implant pin (1). The slit (10) is arranged in such a way that its imagined extension contains the longitudinal axis of the implant pin (1). To reduce material fatigue and wear, either the outer surface of the implant pin (1) or the wall of the recess (7) have set-back areas (6.7, 6.8), which do not touch the surface respectively located opposite them. With suitable embodiment and arrangement, the set-back areas and the relief recesses (1.3, 1.4, 6.3, 6.4) can be created in the same step, in particular by means of a screw thread or several channels in the implant pin (1) or the recess (7). To prevent nicking effects at the exit cross sections of the implant pin (1) from the clamping body (6), either the areas of these exit cross sections of the implant pin (1), or the areas of the end cross sections of the recess (7) have relief recesses (1.3, 1.4, 6.3, 6.4). The clamping arrangement (1, 6) is employed as part of an internal or external fixation device for orthopedic or traumatologic treatments.

REFERENCES:
patent: 5487744 (1996-01-01), Howland
patent: 5667507 (1997-09-01), Corin et al.
patent: 5738685 (1998-04-01), Halm et al.
patent: 5752955 (1998-05-01), Errico et al.

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