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Bipolar tumor ablation needle for high-voltage steep pulse

A steep pulse, bipolar technology, applied in trocars, parts of surgical instruments, medical science, etc., can solve problems such as relatively high parallelism requirements and difficult surgical operations for doctors, achieving high efficiency and easy operation Effect

Pending Publication Date: 2022-01-21
刘中一 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when high-voltage steep pulses are used for surgical ablation, two to six unipolar ablation needles are usually punctured at the same time according to the size of the tumor, and high-voltage pulses are applied between the two needles for tumor ablation. The requirements for parallelism are relatively high, so it is more difficult for doctors to operate

Method used

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  • Bipolar tumor ablation needle for high-voltage steep pulse
  • Bipolar tumor ablation needle for high-voltage steep pulse
  • Bipolar tumor ablation needle for high-voltage steep pulse

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Embodiment approach 1

[0035] like Figure 1 - Figure 2 As shown, the present embodiment is a bipolar tumor melting needle for high pressure steep pulse, including: 01-positive electrode needle; 02-positive terminal insulating layer; 03-negative electrode injection; 04-negative electrode insulating layer; 05-handle; 06-negative connector; 07-positive connector; 08-end cover; 09-negative pole; 10-positive line

[0036] The positive electrode needle (01) has a puncture head, and a positive terminal insulating layer (02) is provided and the front end is bare, the front end bare portion forms a positive electrode; the axial direction is 3 mm, the node needle (01) Do not coat the insulating layer, the same positive electrode joint (07) is reliably mechanically connected;

[0037] Negative electrode needle tube (03): Sold in the positive terminal insulating layer (02), an negative electrode insulating layer (03) having an negative electrode insulating layer (04), and the end portion of the negative electrode n...

Embodiment approach 2

[0044] The ablation needle structure of this embodiment is the same as the embodiment, and there is only the difference between parameters. The bipolar tumor melting needle axis distance of the high pressure steep pulse is 2 mm, the outer diameter of the positive electrode is 0.45 mm, the negative electrode is 0.85 mm, the nanojob main unit pulse voltage is 1000V, the pulse width is 250 Naosecond, ablation time is 5 seconds.

[0045] Tumor effective ablation ranges from 6 mm.

Embodiment approach 3

[0047] The bipolar tumor melting needle axis distance of the high pressure steep pulse is 2 mm, the outer diameter of the positive electrode is 0.45 mm, the outer diameter of the negative electrode is 0.85 mm nanojob, the pulse voltage is positive and negative 1200V, the pulse width is 300 Second, ablation time is 5 seconds.

[0048] Tumor effective ablation ranges from 8 mm.

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Abstract

The invention relates to a bipolar tumor ablation needle for high-voltage high-frequency steep pulse. One needle comprises a positive electrode and a negative electrode, so that the operation is simpler and more convenient than that of a unipolar ablation needle during surgical ablation. A unipolar ablation needle generally needs to puncture 2-6 needles at the same time according to the size of a tumor, the requirement for the parallelism between the two needles is high, and therefore the surgical operation difficulty of a doctor is large. According to the bipolar tumor ablation needle, the single-time tumor ablation diameter is smaller than 12 mm. If the ablation is changed into mobile ablation, the diameter of the ablated tumor can reach about 30mm according to the number of mobile points.

Description

Technical field [0001] The present invention relates to a bipolar tumor melting needle for high pressure steep pulse, which belongs to the field of high pressure steep pulse. Background technique [0002] High-pressure steep pulping tumor melting is a new tumor ablation technology, which causes the cell membrane to generate nano-high pressure pulses, destroy cellular balance, resulting in cellular balance, resulting in apoptosis, tumor cells After apoptosis, in vivo phagocytic cells swallowed into cell fragments and gradually been replaced by normal tissues. [0003] In the case of surgery, the prior art high-pressure steep pulse is generally induced by the tumor size, and the two needles are needed to apply high pressure pulses between the two needles to apply high pressure pulses to carry out tumor ablation, and the needle between the discharge abuse. The parallelism requirements are relatively high, thus relatively large for doctors. [0004] Although Chinese inventive patent ...

Claims

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Application Information

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IPC IPC(8): A61B18/14A61B18/12
CPCA61B18/14A61B18/1402A61B18/148A61B18/1206A61B2018/1425A61B2018/126A61B2018/00577A61B18/1477
Inventor 刘中一刘文婕方志军徐书杭刘超张科陈瑜何磊高剑辉
Owner 刘中一