Patent ID: 9347533
Filing Date: 2016-05-24
CPC Classification: A61B,F16H,Y10T

Claim Text:
1. A drive system for rotationally driving a biopsy member, comprising: a housing comprising a first trackway and a second trackway and a divider between said first and second trackways; a pinion comprising a series of first teeth disposed circumferentially on the pinion, said pinion being connected to said housing and being rotatable relative to said housing and being configured to be rotationally fixed to said biopsy member; a trigger connected to said housing and being moveable relative to said housing during a drive stroke and a return stroke; a rack comprising a series of second teeth disposed longitudinally on the rack, said rack being connected to said housing and being pivotal relative to said housing and moving in a first direction during said drive stoke and moving in a second direction during said return stroke, said rack comprising a guide member following said first and second trackways; wherein said guide member follows said first trackway during said drive stroke, said guide member and said first trackway engaging said first and second teeth of said pinion and said rack as said rack moves in said first direction, said rack thereby rotating said pinion during said drive stroke, and said guide member follows said second trackway during said return stroke, said guide member and said second trackway separating said first and second teeth of said pinion and said rack as said rack moves in said second direction, said rack thereby not rotating said pinion during said return stroke.