Patent ID: 6375654
Filing Date: 2002-04-23
Classification: A61B

Abstract:
A catheter system comprising:a shaft having one or more lumens, the shaft having a distal end and a proximal end; a working tube passing freely in one lumen of the shaft, the working tube having a length, with a proximal end and a distal end, exposed outside the distal end of the shaft, the shaft and the working tube being rotatable relative to each other about a longitudinal axis; and an energy emitting element having one end fixed into a lumen of the shaft and an opposite end extending from the distal end of the shaft and coupled to the working tube between the proximal end and distal end of the working tube, wherein upon rotation of the shaft relative to the working tube, the energy emitting element forms a curve shape around the working tube and upon relative movement of the shaft toward the distal end of the working tube, the curve shape of the energy emitting element becomes radially larger such that a radially expandable portion of the catheter system is defined.