Medical instrument with dual action drive

Details Medical instrument with dual action drive Medical instrument with dual action drive

1992-05-15

1993-11-23

Kruter, Jerome L.

Surgery

Instruments

Forceps

606208, 294115, 294116, A61B 1742, A61B 1744

Patent

active

052639673

ABSTRACT:
A medical instrument including a tubular extension within which and to which two movable end effectors, such as jaw members, are rotatably attached by a pivot. The proximal end of each end effector is pivotally attached to and butts against a drive surface of its respective arm of a dual action drive member also located within the tubular extension. As the dual action drive member is moved proximally or distally within the tubular extension, the distal ends of the end effectors rotate or counter rotate about the pivot in opposition to one another. The dual action drive member paired arms have end surfaces which transfer, to the end effectors, the force required to rotate the end effectors toward one another, thereby reducing the shear force applied to pivot posts on the arms used to open the jaws. The dual action drive member may be used with a variety of different end effector devices including but not limited to medical grippers, hole punches, dissectors, extractors, scissors, and clamps.

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patent: 5052402 (1991-10-01), Bencini et al.
patent: 5170800 (1992-12-01), Smith et al.

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