Flexible cold scalpel probe for freezing treatment of body's cavity tumor

Abstract

The flexible cold scalpel probe for freezing treatment of body's cavity tumor includes a probe body of flexible material and possessing inner casing connected with liquid nitrogen cylinder, outer casing covered electric heating element and insulating material and heat insulating jacket with hea tinsulating handle; one temperature sensor between the two casings; one freezing metal head in the front of the probe body filled with porous metal wires; one temperature sensor in the tip of the freezing metal head and with output connected to the data collector; and the data collector connected to a computer. The device has no vacuum structure, small in size, low cost, no inserting damage, adjustable temperature rise and lowering, fast response speed and good continuity and is especially suitable for nasopharyngeal carcinomal, lung cancer, rectum cancer and other cavity tumor.

Description

technical field [0001] The invention relates to a micro-cold knife probe for cryotherapy of human cavity tumors, in particular to a flexible probe main body outer wall coated with an electric heating film and using liquid nitrogen as a freezing medium for cryotherapy of human cavity tumors Flexible cold knife probe. Background technique [0002] For a long time, rational treatment of human tumor tissue has been the goal of clinical medicine. So far, radiotherapy, chemotherapy, hyperthermia and cryotherapy have been developed. Among various treatment methods, cryogenic surgery can replace surgical resection without sutures , and has the advantages of anesthesia, analgesia, hemostasis and reduction of bleeding, light reaction, high safety, and ability to prevent tumor spread. It has attracted attention in tumor treatment. At present, it has been widely used in many medical fields such as oral cavity, skin, Rectum, urology, gynecology, oncology, neu...

AI Technical Summary

Problems solved by technology

However, the existence of the vacuum structure of this type of cold knife makes the manufacturing process quite complicated, and its thermal insulation performance is actually difficult to guarantee (because the vacuum volume is too small), so that it will inevitably cause low-temperature frostbite to healthy tissues along the process, and Cold knives need to be evacuated periodically

A recently reported U.S. patent (Chinn, D.O., cryoprobe with heat insulation and heating jacket, U.S. Patent: No.5906612; Chinn, D.O., Cryosurgical probe havinginsulating and heated sheaths, United States Patent: No.5906612) was adopted in The outer wall of the cold knife is covered with a heating jacket to control the size of the puck at the head of the cold knife and provide thermal protection to the tissue along the cold knife, thus improving the performance of the cold knife, but this patent is still an improvement proposed for the traditional cold knife measures, it can be considered that no flexible cryoprobe has been proposed so far

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