Electrode needle and electrode device

An electrode needle and needle core technology, which is applied in the field of ablation electrodes, can solve the problem of difficulty in controlling the discharge size of the electrode needle, and achieve the effects of weakening the movement of the electrode needle, preventing human muscle contraction, and realizing control.

Pending Publication Date: 2021-12-21
HANGZHOU WKNIFE MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the shortcomings of the existing methods, the present application proposes an electrode needle and an electrode device to solve the technical problem in the prior art that it is difficult to control the discharge size of the electrode needle

Method used

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  • Electrode needle and electrode device
  • Electrode needle and electrode device
  • Electrode needle and electrode device

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Embodiment Construction

[0038] The present application is described in detail below, and examples of embodiments of the present application are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. Also, detailed descriptions of known technologies will be omitted if they are not necessary to illustrate the features of the present application. The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

[0039] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be ...

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Abstract

The embodiment of the invention provides an electrode needle and an electrode device. The electrode needle comprises a shell, a needle core and a needle tube, wherein at least part of the needle core is arranged in the shell, a sealing structure is formed at the first end, located in the shell, of the needle core, and the sealing structure is slidably connected with the inner wall of the shell; the shell comprises a first fluid interface and a second fluid interface; and the first fluid interface and the second fluid interface are located on the two sides of the moving range of the sealing structure in the axial direction of the needle core correspondingly and used for adjusting the fluid pressure difference of the two sides of the sealing structure in the axial direction by inputting or outputting fluid and driving the sealing structure to drive the second end of the needle core to move relative to the shell and the needle tube in the axial direction. According to the embodiment of the invention, by adjusting the pressure difference of the fluid on the two sides of the sealing structure, the needle core is driven in the axial direction, the moving position is accurately controlled, and then the discharge size of the electrode needle can be adjusted and controlled.

Description

technical field [0001] The present application relates to the technical field of ablation electrodes, and in particular, the present application relates to an electrode needle and an electrode device. Background technique [0002] Irreversible electroporation technology is a technique that inserts electrode needles into the human body and releases high-voltage electrical pulses to form multiple nanoscale irreversible channels on the surface of cell membranes, destroying the stable state of cells, and promoting rapid cell apoptosis. The dead cell debris will be swallowed up by phagocytes in the body, and at the same time, the immune response will occur. [0003] At present, it is difficult to control the actual size of the electrode needle inserted into the human body (and the actual discharge size). When the actual discharge size of the electrode needle is too large, it will cause muscle contraction caused by the current flowing through the muscle tissue, which will increase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/12A61B18/1402A61B2018/1425A61B2018/00577A61B2018/00613
Inventor 衷兴华汪龙杨克严韩平
Owner HANGZHOU WKNIFE MEDICAL TECH CO LTD
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