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Retraction mechanism with clutch-less drive for use with a surgical apparatus

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TLDR
In this article, a retraction mechanism for a hand-held surgical apparatus is presented, which allows the full distal retraction of the firing drive from various positions in a hand held surgical apparatus.
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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Citations
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References
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