Microwave ablation needle, microwave ablation needle and microwave ablation method

Abstract

The invention relates to a microwave ablation needle body, a microwave ablation needle, and a microwave ablation method, which relate to the field of medical articles. The microwave ablation needle body comprises an insulating needle, a metal needle bar and an electrical separator. The insulating needle is provided with a first receiving cavity. A second receiving cavity is disposed in the metal needle bar, an insulating needle is connected to one end of the metal needle bar, and the first receiving cavity is in communication with the second receiving cavity. The electrical separator is disposed in the second receiving cavity for floating the metal needle bar. Since the metal needle bar is in a floating state, the metal needle bar can exert choking flow action and does not have a radiationfunction during microwave ablation, a microwave signal is suppressed from propagating in the direction of the microwave input, so that during the ablation process, the microwave signal radiates energy only through the insulating needle, which eliminates the tailing phenomenon in the traditional design and ensures the stability of the ablation form, and makes the needle closer to the sphere.

Description

technical field [0001] The invention relates to the technical field of medical supplies, in particular to a microwave ablation needle body, a microwave ablation needle and a microwave ablation method. Background technique [0002] In recent years, microwave ablation has become one of the important treatment methods for treating liver cancer, kidney cancer, thyroid and other soft tissues. Microwave ablation is to use antenna to radiate microwaves. Microwaves cause ions and polar water molecules in tissues to rotate, vibrate, and rub against each other to produce thermal effects, so that the treatment area can quickly reach a high temperature, and the tissues are coagulated, dehydrated and necrotic, so as to achieve the purpose of treatment. [0003] With the existing microwave ablation needles, the shape of the ablation area is unstable during microwave ablation, which is roughly ellipsoidal. In order to meet the treatment needs, the ablation area must be enlarged, which will...

AI Technical Summary

Problems solved by technology

[0003] The existing microwave ablation needle, when performing microwave ablation, the shape of the ablation area is unstable and roughly ellipsoidal. In order to meet the treatment needs, the ablation range must be enlarged, which will definitely cause damage to normal tissues of the human body

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