SURGICAL CRYOGENIC DEVICE

摘要

In a cryosurgical apparatus, the heat exchanger is provided with a filling formed by metallic grid or perforated foil wound up in the shape of strip around the middle part of exchanger frame and connected unremovably with its border to the contact plate in which axis a connection screw is placed, an electric temperature sensor and heat element being arranged at the exchanger frame or at the contact plate, for example resistance thermometer and heating winding and a separating partition being arranged among supply tube, tube for cooling medium drain off and vacuum mantle of the apparatus. The exchanger filling can be formed also by a system of metallic grids or perforated foils forming co-axial or concentric areas which are in thermal contact with the contact plate.