Endoscopic instruments having detachable proximal handle and dis

Details Endoscopic instruments having detachable proximal handle and dis Endoscopic instruments having detachable proximal handle and dis

1993-02-11

1996-04-16

Cohen, Lee S.

Surgery

Truss

Pad

606205, A61B 1000

Patent

active

055072976

ABSTRACT:
An endoscopic instrument has a distal assembly removable from a proximal handle. The distal assembly includes a tube carrying an end effector and a push rod coupled to the end effector and slidable through the tube. The proximal handle includes a tube sleeve for receiving the tube, an actuator and a latch for coupling the push rod to the actuator. The tube sleeve is provided with a tube lock for holding the tube securely in place and the tube is provided with a circumferential groove for engaging the lock. The latch is spring loaded, hinged, and has an inclined surface for quick coupling with the push rod. The latch also has a mechanism for uncoupling the latch from the push rod. The push rod is provided with a mating tip which engages the latch so that the actuator causes reciprocal movement of the push rod within the tube to operate the end effector. An axially movable collar on the tube sleeve is used in unlatching, and in one arrangement is also used for rotating the distal assembly.

REFERENCES:
patent: 2113246 (1938-04-01), Wappler
patent: 2790437 (1957-04-01), Moore
patent: 4043323 (1977-08-01), Komiya
patent: 4763668 (1988-08-01), Macek et al.
patent: 4815476 (1989-03-01), Clossick
patent: 5100430 (1992-03-01), Avellanet et al.
patent: 5160343 (1992-11-01), Brancel et al.
patent: 5201752 (1993-04-01), Brown et al.
patent: 5282800 (1994-02-01), Foshee et al.
patent: 5282806 (1994-02-01), Haber et al.

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