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Water-cooling microwave ablation needle-shaped antenna

A microwave ablation and water cooling technology, applied in the field of medical devices, can solve the problems of weak anti-distortion ability, reduced water cooling efficiency, large resistance, etc., and achieve the effects of large ablation damage range, high power tolerance and high efficiency

Active Publication Date: 2013-04-03
NANJING VISON CHINA MEDICAL DEVICES R & D CENT
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Problems solved by technology

[0004] In addition, there are defects in the structure design of the front-end radiator of the needle antenna. The standing wave ratio (SWR) is large, which restricts the output efficiency of microwave power. The outer diameter is large, generally greater than 14G, and the degree of normal tissue damage is high when used in clinical percutaneous puncture; the strength and sharpness of the front end of the needle antenna are defective, resulting in high resistance and weak anti-twist ability during puncture, which does not meet the clinical requirements. actual requirement

Method used

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  • Water-cooling microwave ablation needle-shaped antenna

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Embodiment Construction

[0011] After testing and testing, the outer diameter of the water-cooled microwave ablation needle antenna of the present invention is 17G (about 1.5mm); the torsion resistance reaches 2N / mm; the standing wave ratio is less than 1.5; the enduring power of 80W at the tip radiator; 12 The short diameter of the living body reaches 5 cm in minutes, and it is spherical in shape. The ablation damage range is large and the shape is good, laying the foundation for the progress of tumor ablation therapy.

[0012] However, the above-mentioned specific implementations are only exemplary, and are for better understanding of this patent by those skilled in the art, and cannot be interpreted as limiting the scope of this patent; as long as any Equivalent changes or modifications all fall within the scope of this patent.

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Abstract

The invention discloses a water-cooling microwave ablation needle-shaped antenna, which comprises an ABS (acrylonitrile butadiene styrene) protection handle and an antenna rod body, wherein the ABS protection handle is connected with the antenna rod body. The water-cooling microwave ablation needle-shaped antenna is characterized in that the inside of the ABS protection handle is provided with a water inlet and outlet cavity and a minitype radio frequency coaxial connector; a shell of the ABS protection handle is provided with a microwave output indicator light and a control push button; the antenna rod body comprises an outer thin-wall casing pipe; and the inside of the outer thin-wall casing pipe is provided with a needle-shaped radiator cover, a radiator, a small-diameter coaxial cable and a cooling water inlet pipe. Compared with the prior art, the water-cooling microwave ablation needle-shaped antenna disclosed by the invention has the advantages of ultra-thin diameter, high intensity, high efficiency, high tolerance power, big ablation and damage range and good form, and the foundation is laid for the further tumor ablation therapy.

Description

technical field [0001] The invention relates to medical equipment, in particular to a water-cooled microwave ablation needle antenna for tumor ablation treatment. Background technique [0002] Tumor has always been a difficult problem to overcome in medicine. With the advancement of tumor treatment science, great progress has been made in clinical tumor microwave ablation technology in recent years. Microwave ablation is the use of microwave energy to act on the tissue to immediately produce a thermal effect. Within a few minutes, a stable spherical heat field is formed. The center temperature is greater than 100°C and the edge is greater than 60°C. The tumor tissue is instantly coagulated and inactivated at high temperature, and then Gradually ablate to achieve the therapeutic purpose. Due to its high safety, small trauma, and controllable effect on tissue, microwave ablation technology is more and more respected by doctors, and it will become the first choice of tumor abl...

Claims

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Application Information

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IPC IPC(8): A61B18/18
Inventor 张鹏郑加生
Owner NANJING VISON CHINA MEDICAL DEVICES R & D CENT
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