Endoscopic surgical instruments having stepped rotatable end eff

Details Endoscopic surgical instruments having stepped rotatable end eff Endoscopic surgical instruments having stepped rotatable end eff

1992-12-04

1994-03-15

Cohen, Lee S.

Surgery

Truss

Pad

606205, 606170, 606174, 606 47, A61B 1700

Patent

active

052938786

ABSTRACT:
Medical instruments are provided having end effectors and end effector actuator apparatus which are rotatable relative to the end effectors. The instruments generally include a tube which is typically coupled to the end effectors via a clevis around which the end effectors pivot, a push rod extending through the tube and coupled to the end effectors, and an actuator apparatus engaging the tube and the push rod with the actuator apparatus including a handle which surrounds and rotatably engages the proximal end of the tube, and a lever arm which pivotally engages the handle and is coupled to the push rod such that pivotal movement of the lever arm relative to the handle effects axial movement of the push rod relative to the tube and pivotal movement of the end effectors. In order to alternatively fix or allow rotation of the actuator apparatus relative to the tube and end effectors, the tube is provided with a plurality of peripherally spaced apart recesses in a portion thereof, and the handle is provided with a resiliently biased contact element which is coupled to an electrode and which when seated in a recess restrains rotation of the outer tube about the longitudinal axis, but which can be unseated by a sufficient relative rotational force. To decouple rotation of the push rod from the lever arm, a generally spherical push rod engaging element is provided in a cylindrical bore of the lever arm.

REFERENCES:
patent: 2008367 (1935-07-01), Rhinevault
patent: 2162359 (1936-08-01), Rhinevault
patent: 2741248 (1956-04-01), Woodhall
patent: 2790437 (1957-04-01), Moore
patent: 3506012 (1967-08-01), Brown
patent: 3585985 (1971-06-01), Gould
patent: 4084594 (1978-04-01), Mosior
patent: 4367746 (1983-01-01), Derchinsky
patent: 4411298 (1983-10-01), Ellingsen et al.
patent: 4440170 (1984-04-01), Golden et al.
patent: 4674501 (1987-06-01), Greenberg
patent: 4760848 (1988-08-01), Hasson
patent: 4950273 (1990-08-01), Briggs
patent: 5066295 (1991-11-01), Kozak et al.

Affiliated with

Also associated with

Rating

Endoscopic surgical instruments having stepped rotatable end eff does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Endoscopic surgical instruments having stepped rotatable end eff, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Endoscopic surgical instruments having stepped rotatable end eff will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1530877