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High-performance semi-rigid puncture type microwave ablation antenna

A microwave ablation and high-performance technology, applied in the field of medical microwave technology, can solve the problems of inappropriateness, large outer diameter of the structure, and restricted application range, etc., and achieve the effect of increasing puncture force, improving flexibility, and reducing the outer diameter of itself

Pending Publication Date: 2019-06-28
南京长城医疗设备有限公司
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Problems solved by technology

The other is a microwave ablation needle with a semi-rigid puncture type water-cooled structure. Its disadvantage is that its outer diameter is large, and it is not suitable for guidance with a small inner diameter endoscope, which relatively restricts its clinical application range.

Method used

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  • High-performance semi-rigid puncture type microwave ablation antenna
  • High-performance semi-rigid puncture type microwave ablation antenna

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Embodiment 1

[0025] Such as figure 1 , figure 2 As shown, the high-performance semi-rigid puncture type microwave ablation antenna in the first embodiment is composed of a triangular pyramid-shaped puncture head 1, a dielectric tube 2, a semi-rigid coaxial cable 3, an outer guide sleeve 4, and a thin-walled PTFE tube 6. Steel wire clamp 5, coil spring 7, handle tube 8, handle seat 9, radio frequency connector 10. The inner conductor of the semi-rigid coaxial cable 3 is put into the cylindrical blind hole at the end of the triangular pyramid-shaped piercing head 1, and is fixed by welding and supplemented by pressure riveting; the inner hole of the front end of the outer guide sleeve 4 is set on the outer circle of the shoulder at the tail of the medium tube 2, and its center hole is set on the semi-rigid coaxial cable 3, and the two are in contact with each other. The parts are fixed by airtight welding. The semi-rigid coaxial cable 3 is covered with a helical spring 7 extending to the...

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Abstract

The invention provides a high-performance semi-rigid puncture type microwave ablation antenna. The high-performance semi-rigid puncture type microwave ablation antenna comprises a triangular-pyramid-shaped puncture head, a medium tube, a semi-rigid coaxial cable and an outer guide sleeve, wherein the high-performance semi-rigid coaxial cable serves as a coaxial line transmitting microwave energy,and a spiral spring sleeves the outer surface of the coaxial line and extends to the tail of an antenna body; a polytetrafluoroethylene tube sleeves the outer surface of the spiral spring. According to the high-performance semi-rigid puncture type microwave ablation antenna, the diameter of the antenna body is small, the microwave transmission loss is low, and the spiral spring is used for thermalinsulation so that the thin and long antenna body has enough flexibility, and the outermost layer of the antenna body selects the polytetrafluoroethylene tube which has high self-lubricating and highthermal insulation characteristics. The high-performance semi-rigid puncture type microwave ablation antenna can perform visible solid tumor microwave ablation surgery more safely and effectively under the guide of a high-definition endoscope system, thereby providing a brand-new surgical instrument for non-invasive or micro-invasive microwave interventional therapy.

Description

technical field [0001] The invention relates to a high-performance semi-rigid puncture type microwave ablation antenna, which is suitable for non-invasive or minimally invasive interventional therapy operations, and implements microwave ablation therapy for solid tumors under the guidance of high-definition endoscope systems such as bronchoscopes, gastroscopes, and colonoscopes. It belongs to the application field of medical microwave technology. Background technique [0002] Since the beginning of the 21st century, with the development of modern imaging technology, the clinical application of minimally invasive interventional surgery at home and abroad has made rapid progress, and the expansion of microwave ablation therapy is particularly rapid. In recent years, microwave interventional therapy for tumors has become more and more mature, moving towards a safer and more precise goal, and quietly expanding into the field of non-invasive intervention. [0003] Under the guid...

Claims

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Application Information

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IPC IPC(8): A61B18/18
Inventor 杨兴瑞
Owner 南京长城医疗设备有限公司
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