Rack and pinion actuator handle for endoscopic instruments

Details Rack and pinion actuator handle for endoscopic instruments Rack and pinion actuator handle for endoscopic instruments

1994-07-14

1995-12-26

Pellegrino, Stephen C.

Surgery

Instruments

Forceps

606174, 128751, A61B 1728

Patent

active

054783500

ABSTRACT:
An actuator mechanism for an endoscopic instrument includes a stationary handle having a stepped throughbore with a relatively smaller diameter at the distal end and a relatively larger diameter at the proximal end. A cylindrical rack member is slidably disposed in the larger diameter portion of the throughbore. The larger diameter portion of the throughbore has a lower slot opening, and a movable lever is pivotally coupled to the stationary handle and is provided with a toothed upper pinion which enters the slot in the larger diameter portion of the throughbore and engages the rack member. The proximal end of the tube member is coupled to the distal smaller diameter portion of the throughbore and the proximal end of the control member is coupled to the distal end of the rack member.

REFERENCES:
patent: 4467802 (1984-08-01), Maslanka
patent: 5275615 (1994-01-01), Rose
patent: 5282806 (1994-02-01), Haber et al.

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