Endoscopic scissors having scissor elements loosely engaged with

Details Endoscopic scissors having scissor elements loosely engaged with Endoscopic scissors having scissor elements loosely engaged with

1993-10-21

1995-02-28

Cohen, Lee S.

Surgery

Truss

Pad

606205, A61B 1000

Patent

active

053927893

ABSTRACT:
An endoscopic scissors includes a clevis having a relatively large diameter bore in its first arm and relatively smaller diameter bore in its second arm. A pair of scissor elements having mounting/pivot holes are mounted between the clevis arms. Either the small diameter bore in the second clevis arm or the mounting/pivot hole in the scissor element closest to the second clevis arm is threaded. A stepped diameter axle pin having a threaded portion is inserted with its smaller end entering the larger diameter bore of the first clevis arm. The threaded portion of the axle pin threadably engages either the threaded bore in the second clevis arm or the threaded mounting/pivot hole of the scissor element closest to the second clevis arm. In one embodiment, the bore in the second clevis arm is not threaded and the threaded portion of the axle pin engages only the threaded threaded mounting/pivot hole of the scissor element closest to the second clevis arm. Both ends of the axle pin float in respective clevis arm bores. In another embodiment where the scissor element closest to the second clevis arm is kept stationary, the threaded portion of the axle pin engages the threaded bore in the second clevis arm. The larger end of the axle pin floats in the large diameter bore of the first clevis arm. In a third embodiment, a washer is placed between the second clevis arm and the scissor element closest to it and the axle pin engages the threaded bore in the second clevis arm.

REFERENCES:
patent: 2216344 (1940-10-01), Hampton
patent: 2507881 (1950-05-01), Bennett
patent: 4887613 (1989-12-01), Esser et al.
patent: 4944093 (1990-07-01), Falk
patent: 5067843 (1991-11-01), Nova
patent: 5201759 (1993-04-01), Ferzli

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