Anti-microwave-interference temperature measurement and ablation integrated semi-rigid water-cooling microwave ablation antenna

Abstract

The invention relates to an anti-microwave-interference temperature measurement and ablation integrated semi-rigid water-cooling microwave ablation antenna. The antenna comprises a radiation head, a medium pipe, a semi-rigid coaxial cable and a thermocouple. The antenna is characterized in that a metal shielding case is arranged outside the radiation head; the temperature measurement end of the thermocouple is fixed on the inner surface of the metal shielding case. The anti-microwave-interference temperature measurement and ablation integrated semi-rigid water-cooling microwave ablation antenna can be used for reliably shielding action and serious interference of microwave energy and microwave electromagnetic field intensity on the temperature measurement end by using the perfect structure, so that the critical technology of measuring the actual temperature of an ablated tumor in real time when the semi-rigid microwave ablation antenna is used for performing microwave ablation treatment in cavity, intestinal tract or vessels, even in the heart can be achieved. Therefore, reliable guarantee is provided to excellent curative effect and application expansion of microwave clinical treatment, and a beneficial condition is created for semi-rigid microwave ablation or microwave hyperthermia intelligence.

Description

Background technique [0001] With the rapid development of modern high-tech and bioengineering, medical microwave technology has been more widely used. Since the beginning of the 21st century, microwave ablation has been recognized as being minimally invasive, precise, efficient, and has significant advantages of less toxic and side effects. It is less affected by carbonized blood flow and has a large ablation range, which has attracted extensive attention and attention from medical experts, scholars, doctors, and patients. [0002] The thermal and non-thermal effects of microwaves acting on organisms lead to heating and temperature rise of tumor cells and tissues, which are quickly killed until coagulation and necrosis. Clinical operations have shown that the temperature of the ablation heat field formed by microwaves acting on cells and tissues, resulting in the death or survival of tumor cells, or the possible killing of normal cells at the edge of tumors and other anatomic...

AI Technical Summary

Problems solved by technology

[0004] During the microwave ablation process, since the microwave antenna intervenes inside the ablated tissue, that is, the antenna itself is in the microwave electromagnetic field, the temperature measurement end of the integrated temperature measurement and microwave ablation antenna is inevitably affected by microwave energy and The interference of the microwave electromagnetic field makes it impossible to measure the real temperature data of the ablated tumor cell tissue

The experimental results of microwave ablation of isolated pig liver using the existing integrated antenna for temperature measurement and microwave ablation show that the temperature rise rate displayed by the host computer is much faster than the actual temperature rise rate, and the displayed temperature data is faster than the tissue temperature data. The actual temperature is much higher, there is a huge error between the two, and there is no regularity to follow

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