Retraction mechanism with clutch-less drive for use with a surgical apparatus
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United States of America Patent
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Sep 6, 2011
Grant Date -
Jan 7, 2010
app pub date -
Jun 17, 2009
filing date -
Jul 1, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A retraction mechanism allows the full distal retraction of the firing drive from various positions. The retraction mechanism has been developed for use with a hand held surgical apparatus. An embodiment of the retraction mechanism includes a drive member, a first pulley, a second pulley, and a firing drive. The drive mechanism is configured to be driven by a motor. The first pulley is configured to rotate when the motor drives the drive mechanism. The second pulley is movable relative to the first pulley between a proximal position and a distal position. The firing drive is movable relative to the first pulley between proximal and distal positions. In operation, the first pulley rotates in a first direction in response to a distal translation of the firing drive and wherein the firing drive moves proximally upon rotation of the first pulley in a second direction.
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