Cryogenic application chamber and method

摘要: A cryosurgical instrument comprises an open-ended chamber pressed into firm contact with tissue to be necrotized. stream of liquified gas coolant (such as nitrogen), in substantially the liquid phase, impinges directly on tissue. In one embodiment, coolant-delivery provides venting vapors from chambers through applicator vent tube. another cryogenic application a cylindrical tube connected source pressurized coolant, distal end being open and adapted for subject, proximal connection source, there hole wall near end. The may assume variety configurations order gain easy access lesions which are used apply bulk or confine controlled, spray, accordance methods disclosed herein.