Microwave ablation device having elastic bending radian

Abstract

The invention provides a microwave ablation device having elastic bending radian. The microwave ablation device comprises a puncture tube and an ablation needle which are matched, wherein the puncturetube comprises a puncture tube body and a fixed connector which are connected in sequence, the ablation needle comprises a needle head, a needle rod, a fixed base and a handle sequentially connectedfrom far end to near end, the needle rod can penetrate through the puncture tube body and sequentially comprises a far end portion, a bent portion and a needle rod body from far end to near end, and the bend portion in the needle rod is made from a memory material having the bending radian. In an initial state, the bent portion of the ablation needle is in a bent radian state. After the needle head of the ablation needle and the needle rod enter the puncture tube, the bent portion of the ablation needle is located in the puncture tube body and is limited by the inner wall of the ablation needle. The bent portion of the ablation needle extends out of the puncture tube and then is restored to a bent state.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a microwave ablation device with elastic bending radians. Background technique [0002] In recent years, the incidence of cancer in my country has been increasing year by year. According to 2013 data, there are 14.09 million new cases of cancer in the world every year, and 3.68 million new cases in China, accounting for nearly 1 / 4, becoming the world's largest cancer country. Taking lung cancer as an example, according to statistics from the 2013 China Health Statistical Yearbook, the results of a retrospective survey of malignant tumor deaths in China show that since 2004, the mortality rate of lung cancer has surpassed that of gastric cancer and liver cancer, ranking first at 30.83 (1 / 100,000). According to the 2017 China Cancer Report, lung cancer has become the first in both incidence and mortality in my country. Studies have shown that 70% of lung cancer patients are alrea...

AI Technical Summary

Problems solved by technology

[0004] 1. Difficulty in puncturing tiny lesions with a rigid straight-rod microwave ablation needle: When puncturing tiny lesions, it is necessary to repeatedly adjust the puncture direction of the microwave ablation needle. Only by adjusting the puncture direction of the microwave ablation needle multiple times from left to right and up and down can it finally reach the lesion accurately, which will significantly Increased damage to normal tissues, increasing the risk of complications;

[0005] 2. It is difficult for a rigid straight-rod microwave ablation needle to puncture a special lesion: if there is an important tissue blocking the lesion in front, such as bones, blood vessels, or nerves, there is a risk of damaging these organs;

[0006] 3. Rigid straight-rod microwave ablation needles have a limited ablation range: when ablation of larger tumors requires multiple punctures at different positions of the tumor for ablation, which increases the risk of tumor implantation and metastasis and related complications;

[0007] 4. Rigid straight-rod microwave ablation needles have a risk of needle breakage during ablation because the needles are exposed

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