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1. (WO2017189213) CATHETER INCLUDING DRIVE ASSEMBLY FOR ROTATING AND RECIPROCATING TISSUE-REMOVING ELEMENT

Pub. No.:    WO/2017/189213    International Application No.:    PCT/US2017/026666
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Sat Apr 08 01:59:59 CEST 2017
IPC: A61B 17/3207
Applicants: COVIDIEN LP
Inventors: STEELE, Bradley
Title: CATHETER INCLUDING DRIVE ASSEMBLY FOR ROTATING AND RECIPROCATING TISSUE-REMOVING ELEMENT
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.