Laparoscopic instrument with parallel actuated jaws
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United States of America Patent
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May 29, 2001
Grant Date -
N/A
app pub date -
Jan 20, 2000
filing date -
Jan 20, 2000
priority date (Note) -
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Abstract
A surgical instrument including a handle assembly, and end effector mechanism including jaws, an elongated shaft assembly having a longitudinal actuation rod linearly reciprocating within a hollow sheath, slidably connecting the handle assembly to the jaws. Jaws having first and second grasping members have a mechanically controlled linkage assembly enabling the jaws to be adapted such that they can only open in parallel relationship to each other. The linkage assembly having a pair of toggle links which are rotatively connected to a linear translation member to cause the jaws to open or close. The linkage assembly further having a pair of stabilizing links, which at one end are pivotally anchored to a non-reciprocal movement member, and at an opposite end interconnected with the jaws to maintain the opposing serrated grasping surfaces of the jaws in a parallel relationship to each other.
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