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Irreversible electroporation ablation needle, needle track ablation device and ablation device

An irreversible electrical and ablation needle technology, applied in the field of medical devices, which can solve the problems of complex and difficult to implement arrays

Active Publication Date: 2022-07-15
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 track ablation device and ablation device
  • Irreversible electroporation ablation needle, needle track ablation device and ablation device
  • Irreversible electroporation ablation needle, needle track ablation device and ablation device

Examples

Experimental program
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Effect test

Embodiment 1

[0051] This embodiment provides an irreversible electroporation ablation needle. The irreversible electroporation ablation needle can be rotated and placed inside a soft tumor to treat liver tumors, pancreatic tumors, and the like. like Figure 1-Figure 7 As shown, the irreversible electroporation ablation needle includes:

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

[0053] Specifically, as figure 1 In the viewing angle shown, the first needle itself extends in the horizontal direction, and the first needle is arranged in a sharp shape, which can pierce the tissue 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 arranged around...

Embodiment approach

[0084] As a first embodiment, when the polarity of the power supply connected to the first pin and the second pin is unchanged, the direction of the force applied to the magnet 4 can be adjusted by manually adjusting the operation of the magnet 4 . For example, when the polarity of the magnet 4 is the N pole, the second needle is in a retracted state. By changing the polarity of the magnet 4 to the 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 current direction. Correspondingly, this embodiment also includes a commutation device, which is respectively connected to the first electrode and the second electrode and is suitable for being connected to a power source;

[0086] Through the above setting method, the magnetic pole can be stabilized inside the second needle, and by adjusting the polarity of the po...

Embodiment 2

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

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

[0098] a temperature sensor acting on the first needle position;

[0099] The setting position of the temperature sensor is not limited, 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] The temperature acquisition module is used for acquiring 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. The magnitude of the current flowing through the perforated ablation needle is to increase the calorific value of the first needle in the irreversible electroporation ablation needle; when the temperature is too high, the magnitude of the ...

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Abstract

The present invention provides an irreversible electroporation ablation needle, a needle tract ablation device and an ablation device, comprising: a first needle, on which a first needle head is arranged, and a first electrode is connected to the first needle; and a second needle, which is A second needle is arranged on the top of the needle, the second needle is arranged around the outside of the first needle and at least a part of the second needle is arranged in a curved shape, the second needle is connected with a second electrode, and the first electrode is connected to the second needle. The electrodes have opposite polarities and are suitable for connecting to an AC power supply. When a loop is formed between the first needle and the second needle, at least a part of the second needle will be arranged in a curved shape. According to the law of electromagnetic induction, it will be inside the second needle. generate a magnetic field. The formed magnetic field will affect the ion transport ability of the tumor cell membrane, which can lead to programmed cell death and destroy the tumor. Therefore, it is not necessary to additionally use finite element simulation and other methods to perform simulation operations on the region to be ablated, 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 traditional surgery, radiotherapy, and chemotherapy, precision treatment technologies such as targeted, immune, and minimally invasive interventions are used in clinical practice. Among them, local ablation technology is more and more popular in clinical practice, and it has become one of the new methods of tumor treatment due to its advantages of shortening the hospitalization time and causing little damage to the patient's body. [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. Since the traditi...

Claims

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Application Information

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Patent Type & Authority Patents(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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