Patent ID: 9351757
Filing Date: 2016-05-31
CPC Classification: A61B

Claim Text:
1. A catheter for removing material from a body lumen comprising: a tubular body having proximal and distal ends, a longitudinal axis, a side opening adjacent the distal end of the tubular body, and a lumen extending along the longitudinal axis of the tubular body; a rotatable shaft disposed within the lumen of the tubular body and having proximal and distal ends and a longitudinal axis extending between its proximal and distal ends; a ramp coupled to the tubular body adjacent the distal end of the tubular body and having an angular surface generally opposite the side opening; a flexible cutting element having proximal and distal ends, a longitudinal axis extending between its proximal and distal ends, and an axis of rotation extending between its proximal and distal ends, the proximal end of the cutting element being coupled to the rotatable shaft for imparting rotation of the cutting element about its axis of rotation, and the distal end of the cutting element having a cutting edge adapted to cut material from the body lumen; a cam follower fixedly secured to the rotatable shaft adjacent to the proximal end of the rotatable shaft and configured for coupling with a cylindrical cam of a handle for use with the catheter; a handle attached to the tubular body adjacent the proximal end of the tubular body, the handle including a motor, and a cylindrical cam coupled to the motor and to the cam follower, wherein the cutting element and the rotatable shaft are longitudinally moveable within the tubular body between a stored position, in which the cutting element is received in the tubular body, and a cutting position, in which the cutting element engages the angular surface of the ramp and is deflected along its longitudinal axis such that at least a portion of the longitudinal axis of the cutting element is not parallel to the longitudinal axis of the tubular body and at least a portion of the cutting edge extends through the side opening, wherein the motor is configured to transmit rotation to the cylindrical cam to both impart translation to the cam follower to move the cutting element from the stored position to the cutting position and impart rotation to the cam follower when the cutting element is in the cutting position to rotate the cutting element about its axis of rotation.