Patent ID: 6221087
Filing Date: 2001-04-24
Classification: A61B

Abstract:
An ablation assembly comprising:a drive assembly positioned within a housing and moveable from a first, retracted position forward along a longitudinal path of motion the housing also including a guide shelf that extends parallel to the path of motion of the drive assembly;a burr provided on a distal end of a driveshaft, a proximal end of the driveshaft being coupled to the drive assembly, such that movement of the drive assembly from the first retracted position forward causes the burr to advance through a vessel lumen of a patient; anda stop that is moveable within the housing from a first position to a second selected position along the guide shelf, the stop having a flange extending into the longitudinal path of motion of the drive assembly and a pair of bearing surfaces that ride within the guide shelf, the drive assembly contacting the flange as the drive assembly moves forward, thereby stopping forward motion of the drive assembly and burr.