MEMS DEBRIDER DRIVE TRAIN
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United States of America Patent
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Issued Date -
May 29, 2014
app pub date -
Mar 15, 2013
filing date -
Nov 29, 2012
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Abstract
A medical device such as for removing tissue from a subject is provided with a distal housing configured with a tissue cutter assembly, an elongate member coupled to the distal housing and having an outer tube and an inner drive tube with a crown gear located on a distal end thereof, first and second rotatable members each rotatably mounted to the tissue cutter assembly, a first drive gear train coupled between the crown gear and the first rotatable member, and a second drive gear train coupled between the crown gear and the second rotatable member. The first and second drive gear trains are configured to drive the first and second rotatable members, respectively, in opposite directions. Concave and convex gear tooth profiles are also disclosed for improved performance of the first and second drive gear trains.
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