Water-cooling internal circulation type bipolar ablation needle for electroporation and lesion ablation device

Abstract

The invention discloses a water-cooling internal circulation type bipolar ablation needle for electroporation. The water-cooling internal circulation type bipolar ablation needle comprises a front electrode tube, a front insulating tube, a rear electrode tube and an outer insulating tube, wherein the front insulating tube sleeves the front electrode tube; a first end of the front electrode tube extends out of the front insulating tube to form a needle head part; a second end of the front electrode tube is connected with a first cable; the rear electrode tube sleeves the front insulating tube; the outer insulating tube sleeves the rear electrode tube; a first end of the rear electrode tube extends out of the outer insulating tube and has a discharging distance with a part, extending out of the front insulating tube, of the front electrode tube; and a second end of the rear electrode tube is connected with a second cable. According to the water-cooling internal circulation type bipolar ablation needle disclosed by the invention, the technical effects of reducing the needle distribution quantity of the electroporation ablation needle and simplifying needle distribution operation are realized; and the problems in the prior art that when electroporation ablation is adopted, a plurality of ablation needles need to be distributed, needle distribution is usually difficult at lesion positions or in narrow spaces of dense blood vessels, and the cooling efficiency of the electroporation ablation needle is relatively low are solved.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular, to an electroporation water-cooled internal circulation bipolar ablation needle and a lesion ablation device. Background technique [0002] Tumor ablation therapy generally refers to local interventional therapy techniques that directly destroy tumors by various physical methods. Treatment methods include radiofrequency, microwave, freezing, high-frequency electrocautery, laser, high-energy focused ultrasound, drugs, etc. The corresponding treatment equipment is collectively referred to as a tumor / lesion ablation system. This equipment has an ablation needle that can penetrate into the human body. When performing treatment, the ablation needle needs to be accurately inserted into the human body and reach the tumor or lesion, and then the head end passes through the above-mentioned treatment. way to achieve ablation. [0003] As a method of tumor ablation treatme...

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Problems solved by technology

[0005] The main purpose of this application is to provide an electroporation water-cooled internal circulation bipolar ablation needle and lesion ablation device to solve the problem of dense blood vessel lesion due to the need to arrange multiple ablation needles when electroporation ablation is used in the related art. Or in a narrow space, it is often difficult to arrange needles, and there is also the problem of low cooling efficiency for electroporation ablation needles

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