Patent attributes
A tissue-removing catheter for removing tissue in a body lumen includes an elongate body having an axis and proximal and distal end portions spaced apart from one another along the axis. A tissue-removing element is mounted on the distal end portion of the elongate body. The tissue-removing element is configured to remove the tissue as the tissue-removing element is rotated by the elongate body within the body lumen. A motor operatively engages the elongate body for driving rotation of the elongate body and tissue-removing element mounted on the elongate body. A controller is operatively connected to the motor and configured to perform a torque response routine to control a speed of the motor based on a set PWM value of the motor and a detected current applied to the motor during rotation of the elongate body and tissue-removing element.
