Patent ID: 9737362
Date: 2017-08-22
CPC Classifications: A61B

Claim:
1. A tissue resecting probe comprising: a handle coupled to a windowed outer sleeve and a reciprocating radio-frequency (RF) inner resecting sleeve wherein such reciprocation moves the probe between window-open and window-closed positions at a reciprocation speed; and a motor drive in the handle, and an actuator coupled to the motor drive and rotatable therewith, the actuator configured to convert rotational motion from the motor drive to reciprocation motion of the inner resecting sleeve for reciprocating the inner resecting sleeve across a window of the outer sleeve between the window-open position and the window-closed position, the actuator including an arcuate slot shaped to vary a reciprocation speed of the inner resecting sleeve such that the reciprocation speed of the reciprocating inner resecting sleeve is variable within one complete reciprocation stroke, wherein the complete reciprocation stroke includes an extending stroke in which the inner resecting sleeve moves from the window-open position to the window-closed position and a retracting stroke in which the inner resecting sleeve moves from the window-closed position to the window-open position.