Catheter including drive assembly for rotating and reciprocating tissue-removing element
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United States of America Patent
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May 8, 2018
Issued Date -
N/A
app pub date -
Apr 27, 2016
filing date -
Apr 27, 2016
priority date (Note) -
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Abstract
A tissue-removing catheter includes a drive assembly operatively connected to a drive shaft to impart rotation and reciprocation to the drive shaft and thereby rotate and reciprocate a tissue-removing element of the catheter. The drive assembly includes a prime mover configured to generate a rotational drive force and a reciprocating rotor operatively connected to the prime mover to receive the rotational drive force. The rotor is also operatively connected to the drive shaft to impart rotation and reciprocation to the drive shaft. The drive assembly can include a stator configured to constrain rotation and reciprocation of the reciprocating rotor relative to an axis of the rotor. The rotor can define a race that extends around the rotor axis, and the stator can define one or more bearing projections that track through the race as the prime mover rotates the rotor about the rotor axis to drive reciprocation of the rotor.
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