Microwave ablation needle for liver cancer treatment

Abstract

The invention relates to a microwave ablation needle for liver cancer treatment. The microwave ablation needle comprises a needle head body, a needle rod, a handle, a coaxial cable and a microwave coaxial connecting machine, wherein a hollow part is arranged in the needle head body; the cross section of the needle head body adopts a T-shaped structure; a boss is arranged on the large-diameter endwall of the rear side of the needle head body in the circumferential direction; a groove which cooperates with the boss is formed in the end wall of the needle rod; the needle rod adopts a hollow structure, and is connected to the rear end of the needle head body in a sleeving manner; the needle rod and the needle head body form a whole; the coaxial cable is located in the hollow part of the needle head body and the needle rod; the coaxial cable is connected with the microwave coaxial connecting machine; an insulating layer is arranged between the coaxial cable, the needle head body and the hollow inner wall of the needle rod; a cooling duct is arranged in the inner wall of the needle head body away from one side of the insulating layer, of the hollow part of the needle head body; a waterinlet pipe and a water outlet pipe are arranged at the end parts of the cooling duct in a connecting manner; and a manual cleaning part is also connected to the outside of the needle rod in a slidingand sleeving manner. The microwave ablation needle disclosed by the invention has the following advantages of being more stable, more convenient to use, and more hygienic.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a microwave ablation needle for treating liver cancer. Background technique [0002] With the advancement of modern technology and oncology, domestic microwave tumor ablation technology has made breakthroughs in the past ten years. Microwave tumor ablation is to use microwave energy to act on tissues to produce thermal effects. Within a few minutes to tens of minutes, the central temperature of the thermal field can reach above 100°C. Purpose of ablation therapy. Microwave tumor ablation is to insert a microwave ablation needle into the lesion of human tissue, and the front end continuously emits microwave energy to perform the operation. Because of its high efficiency, small wound, and controllable depth and range of effect on the tissue, it is suitable for Ablation of solid tumors throughout the body. [0003] Existing microwave ablation needles are mainly composed o...

AI Technical Summary

Problems solved by technology

[0003] Existing microwave ablation needles are mainly composed of a needle body, a needle shaft, a handle, a microwave coaxial connector, a water inlet pipe, and a water outlet pipe. Generally, the needle body and the needle shaft are bonded by superglue. The bonding strength is limited. When the microwave ablation needle is pulled out from the patient's body during the operation, the needle body may easily fall off and remain in the patient's body, which will lead to serious medical accidents. In addition, due to the long needle shaft, Although the current ablation needle is provided with a handle, the position cannot be fixed well if the handle is only used for insertion, and the needle shaft will be polluted if held by hand

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