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Cryoablation needle and system using same

A technology for ablation needles and needle bodies, which is applied in the field of medical devices and can solve the problems of excessive alcohol consumption, low calorific value utilization, and long working hours

Active Publication Date: 2019-01-11
LISHUI CENT HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, limited by its melting method, this melting mode only relies on the liquefaction of alcohol vapor to thaw naturally, the temperature can only reach about 60°, the utilization rate of calorific value is low, the working time is long and the amount of alcohol is large

Method used

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  • Cryoablation needle and system using same
  • Cryoablation needle and system using same
  • Cryoablation needle and system using same

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Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Without loss of generality, this embodiment takes the cryoablation needle shown in the figure as the subject of description, and explains in detail the technical principle of building a combustion chamber to realize ablation. It should be understood that other functions of the cryoablation needle constitute the technology claimed in this application The scheme does not constitute a substantive limitation.

[0025] See figure 1 , which shows a schematic diagram of the overall structure of the cryoablation needle described in Embodiment 1.

[0026] The cryoablation needle includes a needle body 1, the inlet core tube 11 of the needle body 1 is inserted into the inner cavity 121 of the needle tip 12, and the same as ...

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Abstract

The invention discloses a cryoablation needle and a system using the same. The cryoablation needle comprises a needle body, a inlet core tube of the needle body is inserted into an internal cavity ofthe needle tip to form an internal medium circuit. The combustor separator is arranged in the outlet end pipe section of the inlet core pipe so as to form a combustor in the internal cavity between the combustor separator and the needle tip part. The combustor separator is arranged in the outlet end pipe section of the inlet core pipe. The combustor partition has a through-flow throat and a partition extending from the throat to the outlet end, and is configured such that the through-flow cross section from the through-flow throat to the partition is gradually increased. The ignition end of the electronic ignition lead is inserted into the combustor partition and protrudes into the combustor to ignite the ablation combustible mixture gas inputted into the combustor through the internal medium circuit. The scheme makes full use of the combustibility of the ablation medium, can release a lot of energy in a short time by raising the temperature, can effectively improve the calorific valueutilization rate of the gas, reduce the amount of alcohol and greatly reduce the operation time.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a cryoablation needle and a system using the cryoablation needle. Background technique [0002] The existing cryoablation needle has two working modes of freezing and ablation. First of all, in the freezing mode, liquid nitrogen is delivered to the working part of the needle tip through the input pipeline. The extremely low temperature liquid nitrogen forms an ice ball at the needle tip, which exchanges heat with the surrounding human tissue, and freezes and kills the tumor tissue in the area. After the heat exchange is completed The liquid nitrogen is sent out through the return pipeline, and the freezing mode is completed; then the melting mode is turned on, and the alcohol vapor is delivered from the input pipeline. When it reaches the working part of the needle tip, it liquefies and releases heat to melt the ice ball, and the liquefied alcohol also flows through the r...

Claims

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Application Information

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IPC IPC(8): A61B18/02
CPCA61B18/0218A61B2018/00595A61B2018/00964A61B2018/0293
Inventor 纪建松徐民赵中伟涂建飞史岩黄乾富
Owner LISHUI CENT HOSPITAL
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