CRYOSURGICAL DEVICES FOR ENDOMETRIAL ABLATION

摘要

A cryoablation system for performing endometrial ablation comprising anelongated tubular cannula having a proximal end, a distal end, and alongitudinal axis, an expandable balloon extending from the distal end of thecannula and fluidly connected to a source of heat transfer fluid by at leastone fluid path, a pump for circulating the heat transfer fluid into and out ofthe balloon, a probe handle coupled to the proximal end of the cannula and influidic communication with the balloon through the cannula, and a heatexchanger for varying the temperature of the heat transfer fluid, wherein theheat exchanger is fluidly connected to a secondary refrigerant source, andwherein the heat exchanger comprises an outer tubular wall and a plurality offins extending from the tubular wall toward the interior portion of the heatexchanger.