Medium nozzle enhanced handheld medical low-power microwave plasma torch

A microwave plasma, medical technology, applied in the field of medical equipment, can solve the problems of unstable jet, large volume, low efficiency of the plasma torch, etc., and achieve the effects of reducing gas turbulence, strong electrode collimation, and improving reflection intensity

Active Publication Date: 2021-07-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-power microwave plasma torch for hand-held medical treatment with medium nozzle enhancement, so as to solve the technical problems of low efficiency, large volume and unstable jet flow in the prior art.

Method used

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  • Medium nozzle enhanced handheld medical low-power microwave plasma torch
  • Medium nozzle enhanced handheld medical low-power microwave plasma torch
  • Medium nozzle enhanced handheld medical low-power microwave plasma torch

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Embodiment 1

[0024] In order to better illustrate the advantages of the present invention, according to the above content, a hand-held medical low-power microwave plasma torch with enhanced medium nozzle of this embodiment is produced and verified.

[0025] Set the operating frequency to 2.45Ghz, and the characteristic impedance of the main transmission line to 50Ω. The production dimensions are as follows: In the plasma tube, for the convenience of processing, the diameter of the metal inner conductor of the first and second coaxial sections is 2mm; the characteristic impedance of the first coaxial section is selected as 50Ω, and the filling medium material is polytetrafluoroethylene. The electrical constant and the inner radius of the outer conductor are determined by the characteristic impedance formula of the coaxial line. The inner diameter of the metal outer conductor of the first coaxial section is 6.7 mm. The end of the first coaxial section far away from the second coaxial section ...

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Abstract

The invention belongs to microwave plasma torches, and particularly relates to a handheld medical low-power microwave plasma torch with an enhanced medium nozzle. The coaxial cable is of a coaxial structure and comprises a metal outer conductor, and a metal inner conductor is coaxially arranged in the metal outer conductor in a sleeved mode. The plasma tube is sequentially divided into a first coaxial section, a second coaxial section and a third coaxial section in the plasma spraying direction. A medium nozzle is arranged on the inner wall of the metal outer conductor of the third coaxial section and is not in contact with the metal inner conductor. Due to the fact that the medium nozzle is added in the plasma tube, the electric field intensity at the top end of the electrode is enhanced by combining reflection formed by microwaves on the inner wall of the medium nozzle and an air flow layer interface, and therefore, plasma is excited under watt-level power. Compared with the prior art, the excitation of the plasma jet at low power is realized, and the device has the advantages of high efficiency, strong stability and the like.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a low-power microwave plasma torch for hand-held medical treatment with medium nozzle enhancement. Background technique [0002] Plasma is the fourth form of matter. In this state, matter is fully ionized, mainly composed of free electrons, ions, and neutral particles. Plasma has the characteristics of high particle kinetic energy and high chemical activity, and is widely used in the fields of material preparation, coating, cutting, plasma antenna, sterilization and disinfection. Plasma can not only disinfect and sterilize, but also cut tissue and mucous membranes; many studies have shown that it has the effect of reducing surgical bleeding, reducing the risk of infection, reducing wound healing time and reducing healing scars. [0003] A microwave plasma torch is a device that uses microwave energy to generate a plasma jet. At present, the main structure is a rectan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/34A61B18/18
CPCH05H1/34A61B18/1815A61B2018/00601
Inventor 张朝阳傅文杰鄢扬黎晓云
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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