A cold cycle ablation needle system

Abstract

A cold-circulation ablation needle system is characterized by comprising a needle point (1), a needle bar (2), a capillary (3), a thermocouple sensor lead (4), a heat shrink tube (5), a needle bar fixing seat (7), a handle casing (8), a water pipe fixing seat (1), a water outlet pipe (11), a water inlet pipe (12), an electrode contract (14), a radio frequency line (16) and a temperature compensation lead (17), wherein the needle point (1) is located at the front end of the needle bar (2), the back end of the needle bar (2) is connected with the needle bar fixing seat (7), and the needle bar (2) is sleeved with the heat shrink tube (5) and adopts a hollow structure. A cold sterile water circulation structure is adopted in an electrode of the cold-circulation ablation needle system, the highest energy deposition is obtained in an ablation area, impedance rising of surrounding tissue is effectively reduced, and carbonization is avoided.

Description

technical field [0001] The invention relates to the field of minimally invasive medical devices, in particular to a cold cycle ablation needle system. Background technique [0002] The ablation needle is not a needle, it is a very thin radio frequency energy output electrode. The specific method is: under the guidance of B-ultrasound or CT, the ablation needle is directly punctured into the tumor site. When the temperature reaches about 60 degrees, the protein of cancer cells denatures and coagulates, leading to irreversible necrosis. At the same time, it has very little impact on other tissues, improves the immunity of the patient's body, and inhibits the spread of tumor cells. [0003] Ablation needles are widely used in liver cancer, lung cancer, uterine fibroids, bone cancer, kidney cancer, etc. Cancer, pancreatic cancer, thyroid tumors, hypersplenism, etc. [0004] The temperature control effect of the existing ablation needle at the working site is not ideal, resul...

AI Technical Summary

Problems solved by technology

[0004] The temperature control effect of the existing ablation needle at the working site is not ideal, resulting in rapid temperature rise of the ablation needle, which is not easy to control, adhesion of the needle shaft and needle tip, and damage to surrounding organs. The reactions include slight burning pain during the operation, postoperative Low fever etc.

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