Wrist assembly for articulating laparoscopic surgical instruments
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United States of America Patent
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Dec 15, 2015
Grant Date -
Oct 10, 2013
app pub date -
Apr 9, 2012
filing date -
Apr 9, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An articulating laparoscopic instrument including a handle, an outer shaft, an end effector, and a wrist assembly. The wrist assembly connects the end effector to the shaft and includes torque and articulation mechanisms. The torque mechanism includes a plurality of links disposed over the rod and connected with one another in a pivotable yet rotationally locked fashion. The articulation mechanism includes a plurality of articulation member disposed over the rod to collectively define a deflection section. The links freely rotate relative to the articulation members, with the rod and links collectively bending in response to a change in shape of the deflection section.
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