Arthroscopic surgical instruments

Details Arthroscopic surgical instruments Arthroscopic surgical instruments

1992-11-18

1995-03-07

Graysay, Tamara L.

Surgery

Instruments

Orthopedic instrumentation

606174, A61B 1756, A61B 1732

Patent

active

053953754

ABSTRACT:
A disposable arthroscopic surgical instrument includes a hollow tube with a manual actuator coupled to its proximal end and an end effector coupled to its distal end. The actuator and the end effector are coupled by a push rod which passes through the hollow tube and the push rod includes a frangible link so that the push rod will break when a predetermined force is applied to the end effector by the actuator. The frangible link is a flattened portion of the cylindrical push rod having a strength reducing throughbore. An end effector having a stationary jaw and a movable jaw is also disclosed. The stationary jaw is coupled to the distal end of the tube and has a throughbore for receiving the push rod. The movable jaw is coupled to push rod and is pivotally coupled to the stationary jaw by arcuate engaging surfaces on both jaws. The movable jaw preferably includes a pair of arcuate grooves while the stationary jaw has a pair of arcuate flanges which engage the grooves on the movable jaw. The movable jaw is also provided with a knife-like edge and the stationary jaw is provided with a receiving opening into which the movable jaw fits when the jaws are in a closed position.

REFERENCES:
patent: 1754806 (1930-04-01), Stevenson
patent: 3504460 (1970-04-01), Solberg
patent: 4522206 (1985-06-01), Whipple et al.
patent: 4712545 (1987-12-01), Honkanen
patent: 4896678 (1990-01-01), Ogawa
patent: 4994024 (1991-02-01), Falk
patent: 5219357 (1993-06-01), Honkanen et al.

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