Medical instrument with dual action drive

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

A - Human Necessities

61

B

A61B 17/30 (2006.01) A61B 17/10 (2006.01) A61B 17/28 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2135881

2135881 9322980 PCTABS00028 A medical instrument including a tubular extension (1c) within which and to which two movable end effectors (60a, 60b), 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 (30) also located within the tubular extension. As the dual action drive member (30) is moved proximally or distally within the tubular extension, the distal ends of the end effectors rotate (60a, 60b) or counter rotate about the pivot (80) in opposition to one another. The dual action drive member paired arms have end surfaces (40a, 40b) 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.

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