High-performance water-cooled microwave ablation antenna

A high-performance microwave ablation technology, applied in the field of medical devices, can solve problems such as inconsistent microwave ablation lesions, unstable ablation antenna performance, and large differences, and achieve the effect of promoting intelligence

Inactive Publication Date: 2013-06-12
杨兴瑞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the existing microwave ablation surgical instruments, some defects and deficiencies in product performance and quality have been exposed:
Therefore, when the structural design and manufacturing process of the front end of the microwave ablation antenna ignore the above-mentioned precise details, ignore the possible variable factors, or do not consider carefully, the performance...

Method used

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  • High-performance water-cooled microwave ablation antenna
  • High-performance water-cooled microwave ablation antenna
  • High-performance water-cooled microwave ablation antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 , figure 2 As shown, the high-performance water-cooled microwave ablation antenna of this embodiment includes: a radiation head 1, a dielectric tube 2, a semi-rigid coaxial cable 3, an outer guide sleeve 4, a needle rod 5, an inner water pipe 6, and a needle rod positioning sleeve 7 , Transition sleeve 8, RF pin connector 9, handle tail 10, water inlet 11, water outlet 12, Huff handle body 13, handle end 14.

[0038] Such as figure 1 As shown, the inner conductor of the semi-rigid coaxial cable 3 is installed in the blind hole of the tail cylinder of the radiation head 1 by welding and supplemented by dot riveting to fix it. The medium tube 2 is assembled on the tail cylinder of the radiation head 1 and fixed with adhesive. The outer guide sleeve 4 is set on the outer circle of the shoulder of the medium pipe 2, and is fixed by multi-point mechanical pressure riveting and supplemented with adhesives. on the outer conductor and fixed by welding. Th...

Embodiment 2

[0048] Such as image 3 , Figure 4 As shown, the high-performance water-cooled microwave ablation antenna of this embodiment includes: a radiation head 1, a dielectric tube 2, a semi-rigid coaxial cable 3, an outer guide sleeve 4, a needle rod 5, an inner water pipe 6, and a needle rod positioning sleeve 7 , Waterproof sleeve 15, radio frequency pin connector 9, handle tail 10, water inlet nozzle 11, water outlet nozzle 12, Huff type handle body 13, handle end 14.

[0049] The difference between this embodiment and the first embodiment lies in that the cooling water inlet and outlet structures of the two embodiments are different. Such as image 3 , Figure 4 As shown, the cooling water of the present invention first enters the cavity formed by the water barrier 15 and the radio frequency pin connector 9 from the water inlet 11, and then passes through the gap between the surface of the semi-rigid coaxial cable 3 and the outer wall of the inner water pipe 6 , injected int...

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Abstract

The invention discloses a high-performance water-cooled microwave ablation antenna, comprising a radiation head, a medium pipe, a semi-rigid coaxial electric cable, a needle rod, and a metal outer guide bush sleeved on the tail part of the medium pipe, wherein the semi-rigid coaxial electric cable penetrates through the axis hole of the metal outer guide bush and then is connected with the radiation head, the front end of the metal outer guide bush is sleeved on the medium pipe, the front end of the needle rod is sleeved on the excircle of the tail part of the outer guide bush, and the outer guide bush is in ohmic contact with the outer conductor of the semi-rigid coaxial electric cable and the needle rod. According to the high-performance water-cooled microwave ablation antenna disclosed by the invention, the needle rod and the medium pipe are connected together through the metal outer guide bush, the outer guide bush is in ohmic contact with the outer conductor of the semi-rigid coaxial electric cable and the needle rod, so that the structure precision of the microwave ablation antenna is improved, the boundary condition of the spatial electromagnetic field source of the antenna is not instable and unknown any more, and therefore, the performance and the main property parameters of the ablation antenna tend to be consistent and have certainty, so that the stability, efficiency and reliability of the ablation antenna are further improved.

Description

technical field [0001] The invention relates to a medical device for microwave ablation of tumors, belonging to the technical field of medical microwaves. Background technique [0002] Since the beginning of the 21st century, microwave ablation of tumors has rapidly developed into a major means of clinical tumor treatment. It can inactivate tumors in situ under the guidance of modern images such as B-ultrasound or CT, and has minimally invasive, precise, Notable features of high efficiency, no toxicity and little side effects. Microwave ablation is playing an increasingly important role in the treatment of solid tumors, especially for larger solid tumors, due to its outstanding advantages such as fast heating speed, high intratumoral temperature, large ablation range, and little influence from carbonization and blood flow. The popularity rate of clinical application is also increasing. [0003] With the continuous popularization of microwave ablation of tumors, clinical me...

Claims

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Application Information

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IPC IPC(8): A61B18/18
Inventor 杨兴瑞
Owner 杨兴瑞
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