Low-temperature therapeutic apparatus for tumour

Abstract

The invention discloses a low-temperature therapeutic apparatus for tumour, which comprises a low-temperature scalpel and a low-temperature control device. The low-temperature scalpel comprises a low-temperature probe, a thermoelectricity module, a handle, an air inlet pipe and an air source connector which are sequentially connected, wherein a transmission protection pipeline is arranged outsidethe air inlet pipe. The low-temperature control device comprises a high-pressure air tank, a high-pressure magnetic valve, a filter, a high-pressure regulation valve, a pressure sensor, a programmable logic controller, a touch screen, a thermoelectric module, a controllable direct-current power supply and a temperature sensor. Metal foams are arranged in the low-temperature probe, and the thermoelectric module can fully use returned air energy in freezing and rewarming stages. Consumption of high-pressure air can be effectively reduced by adjusting the thermoelectric module, the low-temperature probe is led to be capable of working when pressure of inlet air is low, and the defect that small-diameter probes are lack of cold energy is overcome to some degree. The low-temperature therapeutic apparatus is suitable for cryoablation surgeries of canceration tissues.

Description

technical field [0001] The invention relates to a therapeutic instrument, in particular to a tumor low temperature therapeutic instrument. Background technique [0002] Low-temperature minimally invasive ablation therapy provides a powerful treatment method for many tumor patients who cannot be treated by traditional methods. With the help of monitoring equipment, the low-temperature scalpel is directly inserted into the lesion, and the purpose of killing tumor cells is achieved through cold and hot cycle treatment. Cryoablation has small trauma, good curative effect, and the effective rate can reach more than 90%. It has become an indispensable means of clinical treatment of various tumors. For the treatment of tumors that cannot be radically resected by conventional surgery, cryoablation can quickly reduce the tumor burden, reduce the suffering of patients, and improve their quality of life. It has an irreplaceable role in radiotherapy and chemotherapy. According to dome...

AI Technical Summary

Problems solved by technology

[0004] The current liquid nitrogen cryotherapy instrument and argon-helium knife on the market are difficult to meet the above requirements

The liquid nitrogen transmission pipeline of the liquid nitrogen cryotherapy instrument needs good thermal insulation protection, and the equipment is heavy and inconvenient to operate

In addition, when liquid nitrogen reaches the tip of the probe and undergoes phase-change refrigeration, a large amount of gas will be generated. The existence of the gas film makes it difficult to output the cooling capacity of the probe, which is not good for treatment.

The argon-helium knife has the function of rapid cooling and rewarming, but it does not have the function of temperature adjustment. The temperature achieved by rewarming is still far from the requirement of hyperthermia, and the cooling output is greatly affected by the intake pressure.

Small diameter cold knife can provide very limited amount of cooling

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