Needle type cold and hot alternative tumor therapeutic head

Abstract

The utility model relates to a needle-type cold and heat alternating tumor therapy head. Used in the field of medical devices. The invention is a therapeutic needle structure, which includes an inner tube, an outer tube, a temperature acquisition unit, a single-core shielded wire, a temperature signal output wire, a vacuum heat insulation layer, and a hand-held outer layer. The inner tube is arranged in the outer tube, the 2cm long part of the front end of the treatment needle is the heat transfer section, and the hand-held outer coat layer is set on the rear end of the outer tube of the treatment needle to form the hand-held section. The temperature acquisition unit is located inside the outer tube of the heat transfer section, and the temperature acquisition unit is led out from the hand-held section through a temperature signal output line. The vacuum heat insulation layer is sleeved on the outer tube between the heat transfer section and the hand-held section to form the heat insulation section of the treatment needle. The heat transfer section also serves as a radio frequency electrode and is led out through a single-core shielded wire. The invention utilizes thermophysical processes to increase the killing rate of malignant tumors, reduce the recurrence rate of surgery, and at the same time ensure the least damage to healthy tissues. It can perform both low-temperature surgery and radiofrequency hyperthermia, thereby realizing the alternating cold and heat treatment of malignant tumors.

Description

technical field [0001] The invention relates to a device for treating tumors, in particular to a needle-type cold and heat alternating tumor treatment head. Used in the field of medical devices. Background technique [0002] Seeking a medical method that can ensure the least damage to healthy tissues while treating tumors has been the goal that many scientific researchers and medical personnel have been striving for. With the development of science and technology, especially the progress of image technology such as nuclear magnetic resonance imaging, ultrasound imaging, etc., minimally invasive surgery such as low temperature cryosurgery and hyperthermia for tumors has begun to develop more and is becoming more and more popular. , but they still have their own shortcomings. Existing hypothermic surgery has relatively harsh conditions for completely killing tumor cells. Rabin et al. found in the study of cryogenic surgery on sheep breast cancer that the area damaged by low ...

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Problems solved by technology

Chinese invention patent "Soaking cold knife device that can promote rapid heating and melting of frozen tumor tissue" (patent application number 01201762.0) Although it can be used to achieve alternating cold and heat treatment, it is a "soaking cold knife device" , "When in use, the freezing head is pre-placed in liquid nitrogen, and then it touches the tumor after taking it out", the rewarming of the freezing head is realized by the internal heating element, so there is no continuous liquid nitrogen flow to achieve continuous cold and hot alternating therapy , and is only suitable for the treatment of superficial tumors such as skin tumors, but it is completely inapplicable for tumors located in the human body, which has great limitations

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