Internal-cooling microwave ablation needle provided with implanted balloon

A technology of microwave ablation and balloon, which is applied in cooling surgical instruments, parts of surgical instruments, medical science, etc. It can solve problems such as displacement, difficulty in observing and handling microwave needles, and affecting surgical effects, etc., to achieve good fixation , Reduce the effect of carbonization range

Active Publication Date: 2016-06-08
ACCUTARGET MEDIPHARMA (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the microwave ablation process, the microwave ablation needle is prone to displacement with the heat shrinkage and deformation of the surrounding tissue, which brings adverse clinical consequences: 1. The ablation area deviates from the tumor area, which affects the surgical effect and may damage

Method used

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  • Internal-cooling microwave ablation needle provided with implanted balloon
  • Internal-cooling microwave ablation needle provided with implanted balloon
  • Internal-cooling microwave ablation needle provided with implanted balloon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like Figure 5 As shown, the installation angle between the interface fixing frame and the handle 15 is 90 degrees, that is, the two are vertically fixed installation forms, the interface fixing frame is installed at the tail of the handle 15, and the internal antenna and pipeline are distributed along the direction of the handle.

Embodiment 2

[0037] like Image 6 , the installation angle between the interface fixing frame and the handle 15 is 180 degrees, that is, the two are parallel and fixed installation forms, the interface fixing frame is installed at the tail of the handle 15, and the internal antenna and pipeline are distributed along the direction of the handle.

[0038] The present invention has the following advantages:

[0039] 1. The internal cooling medium has high compatibility and is compatible with commonly used water cooling. There is no restriction on the type of gas, and it is compatible with low-temperature gases such as nitrogen and carbon dioxide commonly used in hospitals;

[0040] 2. The temperature of the needle tube wall in the non-target area is low. The balloon forms a large heat exchange area, which blocks the heat transfer on the wall of the needle tube in the non-target area in the high temperature area, and controls the ablation range;

[0041] 3. During the ablation process, the n...

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PUM

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Abstract

The invention relates to an internal-cooling microwave ablation needle provided with an implanted balloon. A microwave antenna is insulated from an internal cooling system through a microwave antenna liner tube, the internal cooling system is in positioning connection with an outer tube through an adapter tube and a sealing tube, and the balloon is located between a targeted area and a non-targeted area of the microwave ablation needle and connected with a J-T spray tube through the adapter tube; the J-T spray tube is connected with a finned tube, the balloon is filled with fluid through the adapter tube, the balloon after filling of the cooling fluid is expanded and has a fastening effect with surrounding tissue; when low-temperature gas is introduced, small frozen areas are produced around the balloon under the action of the throttling effect of the J-T spray tube, and the fixing function is realized; a vacuum wall is arranged on the inner side of the outer tube, so that the fluid in the outer tube is in heat insulation from biological tissue outside the outer tube, and normal tissue is protected from cold injuries. The internal-cooling microwave ablation needle can be effectively prevented from displacement with shrinking deformation of heated biological tissue in an ablation process, and has the advantages that an ablation area is positioned more accurately, fewer normal tissue injuries are caused, the risk of the needle track implantation of tumors is lower and the like.

Description

technical field [0001] The invention relates to a microwave ablation medical device, in particular to an inner cooling microwave ablation needle. Background technique [0002] Tumor is one of the most important problems that endanger human health. In recent years, with the continuous development of science and technology and medical level, minimally invasive tumor ablation has become a hot spot. Minimally invasive tumor ablation is at the forefront of the development of clinical tumor medicine at present. Compared with traditional tumor treatment methods such as surgical resection, radiotherapy, and chemotherapy, it has the advantages of less harm to the human body and fewer postoperative complications. [0003] Microwave ablation is one of the representative ablation techniques. Microwave ablation uses the thermal effect of microwaves on biological tissues to rapidly heat up and denature diseased tissues to achieve therapeutic purposes. In recent years, microwave ablatio...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61B18/14A61B18/02
CPCA61B18/02A61B18/12A61B18/14A61B2018/00011A61B2018/00285A61B2018/0293A61B2018/1425
Inventor 吴曦徐彬凯
Owner ACCUTARGET MEDIPHARMA (SHANGHAI) CO LTD
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