Tumor micro-wave ablation needle with thin-film resistor multi-point temperature measurement function

Abstract

The invention discloses a tumor micro-wave ablation needle with a thin-film resistor multi-point temperature measurement function. An ablation puncture head comprises a conical front end and a cylindrical tail end; an insulating medium sleeve is fixedly connected between the tail end of the ablation puncture head and the front end of a stainless steel needle bar; a semi-rigid coaxial cable and a stainless steel capillary water inlet tube are arranged in the stainless steel needle bar, one end of the semi-rigid coaxial cable penetrates through the insulating medium sleeve and is connected with the tail end of the ablation puncture head; a protection handle is arranged at the tail end of the stainless steel needle bar, and the protection handle is internally provided with a copper water tank, a water inlet pipe connector, a water outlet pipe connector and a temperature measurement interface; a multi-point thin-film thermistor array is closely attached to the surface of the stainless steel needle bar; the other end of the semi-rigid coaxial cable penetrates through the copper water tank and then is connected with a radio-frequency connector; the stainless steel capillary water inlet tube is led out of the lateral side of the stainless steel needle bar and then penetrates through the copper water tank into the water inlet pipe connector. The structure integrates the function of multi-point temperature measurement and the function of ablation, and it is ensured that the surgical ablation dosage is optimized.

Description

technical field [0001] The invention belongs to the field of microwave hyperthermia for tumors, in particular to a microwave ablation needle for tumors with the function of multi-point temperature measurement by thin film resistance. Background technique [0002] With the development of tumor minimally invasive technology, microwave ablation technology has gradually been recognized and widely used in the field of clinical medicine. Compared with traditional surgical treatment, microwave ablation has the advantages of large ablation range and fewer complications, and has become a routine treatment for malignant liver tumors. In tumor hyperthermia, it is necessary to monitor the body temperature and the temperature of the ablation site in real time to ensure that the tumor tissue is heated accurately and uniformly, so that it reaches the critical death temperature and keeps normal tissue from thermal damage. [0003] Microwave ablation uses the thermal effect of microwaves to...

AI Technical Summary

Problems solved by technology

[0004] At present, it is difficult to obtain the point distribution of the two-dimensional or three-dimensional space temperature field in real time during the operation based on the single-point needle temperature measurement.

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