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Irreversible electroporation ablation needle, needle passage ablation device and ablation device

A technology of irreversible electricity and ablation needles, which is applied in the field of medical devices and can solve the problems of complicated array arrangement and difficult implementation

Active Publication Date: 2022-04-22
北京微刀医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the irreversible electroporation ablation needles are arranged in a complex manner during use and it is difficult to achieve full coverage of the area to be ablated.

Method used

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  • Irreversible electroporation ablation needle, needle passage ablation device and ablation device
  • Irreversible electroporation ablation needle, needle passage ablation device and ablation device
  • Irreversible electroporation ablation needle, needle passage ablation device and ablation device

Examples

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Effect test

Embodiment 1

[0051] This embodiment provides an irreversible electroporation ablation needle, which can be rotated and placed inside soft tumors to treat liver tumors, pancreatic tumors, and the like. Such as Figure 1-Figure 7 As shown, the irreversible electroporation ablation needles include:

[0052] A first needle 1, on which a first needle head 11 is arranged, and the first needle 1 is suitable for connecting to a first electrode;

[0053] Specifically, such as figure 1 In the shown viewing angle, the first needle itself extends along the horizontal direction, and the first needle head is arranged in a sharp shape, which can pierce tissues during the treatment process.

[0054] Further, the shape of the first needle is not limited. Optionally, the first needle is arranged in a straight line. In this embodiment, the length of the first needle is 40 cm.

[0055] The second needle 2 is provided with a second needle head 21, the second needle is wound around the outside of the first n...

Embodiment approach

[0084] As a first embodiment, when the polarity of the power supply connected to the first pin and the second pin remains unchanged, the force direction of the magnet 4 can be adjusted by manually adjusting the movement of the magnet 4 . For example, when the polarity of the magnet 4 is N pole, the second needle is in a retracted state, and by changing the polarity of the magnet 4 to S pole, the second needle is changed to a stretched state when the current direction is inconvenient;

[0085] As a second embodiment, the stretched or contracted state of the second needle can be adjusted by changing the direction of the current. Correspondingly, this embodiment also includes a reversing device, which is respectively connected to the first electrode and the second electrode and is suitable for being connected to a power supply;

[0086] Through the above-mentioned setting method, the magnetic pole can be stabilized inside the second needle. By adjusting the polarity of the power ...

Embodiment 2

[0096] This embodiment provides a needle track ablation device, including:

[0097] The irreversible electroporation ablation needle provided in Example 1;

[0098] a temperature sensor acting at said first needle location;

[0099] The setting position of the temperature sensor is not limited, and it can be installed on the second needle by clamping, welding, etc., so as to realize real-time monitoring of the temperature of the first needle;

[0100] A temperature acquisition module, configured to acquire the temperature signal detected by the temperature sensor.

[0101] When the temperature sensor completes the temperature monitoring of the first needle, it will send the temperature information to the temperature acquisition module in time. After the temperature acquisition module completes the signal acquisition, it will make a judgment. The size of the current flowing through the perforation ablation needle is to increase the heating value of the first needle in the irr...

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Abstract

The invention provides an irreversible electroporation ablation needle, a needle passage ablation device and an ablation device.The irreversible electroporation ablation needle comprises a first needle, a second needle, a third needle and a fourth needle, a second needle head is arranged on the second needle, the second needle is wound on the outer side of the first needle, at least one part of the second needle is arranged in a bent shape, the second needle is connected with a second electrode, the polarity of the first electrode is opposite to that of the second electrode, the first electrode is suitable for being connected with an alternating-current power supply, and when a loop is formed between the first needle and the second needle, the loop is closed. At least one part of the second needle is bent, so that a magnetic field can be generated in the second needle according to the law of electromagnetic induction. The formed magnetic field can influence the ion transport capacity of tumor cell membranes, programmed cell death can be caused, and damage to tumors is achieved. Therefore, a finite element simulation method and the like do not need to be additionally adopted to carry out simulation operation on the to-be-ablated area, and the tumor ablation effect can be effectively achieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an irreversible electroporation ablation needle, a needle track ablation device and an ablation device. Background technique [0002] Cancer is a serious threat to human health and life. In addition to the three conventional treatment methods of surgery, radiotherapy, and chemotherapy, precise treatment techniques such as targeting, immunization, and minimally invasive intervention will be used clinically. Among them, local ablation technology is becoming more and more popular in clinic. It has become one of the new methods of tumor treatment due to its advantages of shortening the hospital stay and causing less physical damage to patients. [0003] Local ablation includes thermal ablation and cold ablation. Thermal ablation includes radiofrequency ablation, microwave ablation, argon-helium knife ablation, focused ultrasound ablation, and other laser ablation, etc. Becau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/14
CPCA61B18/14A61B2018/1425A61B2018/00577A61B2018/00613A61B2018/00791
Inventor 冯健
Owner 北京微刀医疗科技有限公司
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