Cryosurgical probe and method of manufacturing thereof

Abstract

A cryoprobe for cryotherapy, includes a working and a drain tube, welded together. The working tube has a first end, a distal end, an internal surface, an external surface, an inner diameter, and an outer diameter. The drain tube is placed concentrically in the working tube, and has an internal surface, an external surface, an inner diameter, an outer diameter, a first end connected to a first pressure supply, and a perforated second end which is proximate to the distal end of the working tube. The drain tube is welded to the working tube between the internal surface of the working tube and the external surface of the drain tube to manufacture a throttle perforation, in a manner which allows fluid to pass along the outer surface of the drain tube, expand at the distal end of the working tube, and drain through the drain tube.

CPC Classifications