Microwave ablation probe for interventional therapy of liver cancer

Abstract

The invention relates to a microwave ablation probe for interventional therapy of liver cancer, comprising a matching insulating sleeve, a radiating antenna, a coaxial inner conductor, a coaxial outer conductor, a choke ring, a shank and a handle.The front end of the matching insulating sleeve is in a fully-closed form and includes a tip structure for puncturing; the coaxial inner conductor and the coaxial outer conductor are disposed in the matching insulating sleeve, the coaxial inner conductor is in welded connection with an end of the coaxial outer conductor, the front end of the coaxial outer conductor is provided with two circular grooves, and the radiating antenna is formed; the choke ring is fixedly connected with the matching insulating sleeve, and the choke ring is hermetically welded to the coaxial outer conductor; the matching insulating sleeve is fixedly connected with the shank, and the shank is fixed to the handle.The microwave ablation probe is ingenious structure and easy to manufacture, the specially made choke ring is combined with the double-groove antenna, and the antenna can be imparted a wider ablation range and greater roundness.

Description

technical field [0001] The invention relates to a microwave ablation needle for interventional treatment of liver cancer. Background technique [0002] Microwave ablation therapy is guided by images. The microwave ablation needle percutaneously punctures the tumor lesion. The microwave energy emitted by the microwave ablation therapy device is transmitted to the ablation needle through the transmission line and radiates to the tumor lesion tissue. Under the action of microwaves, polar molecules oscillate, The local high heat generated by friction is likely to be trapped in the tumor tissue. When the temperature reaches 60-100°C, protein coagulation will occur immediately, and the nucleic acid of cytosolic enzymes and mitochondrial enzymes will form coagulation and necrosis, and finally the tumor tissue will coagulate and necrosis, so as to achieve the goal of treatment. Purpose. [0003] my country began to use microwave technology to treat liver cancer in 1998. After more ...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the ablation diameter, it cannot adapt to the ablation treatment of large liver cancer, and the ablation range of the traditional ablation antenna is relatively ellipsoidal, which is not conducive to the surgical control of the treating physician.

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