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Electric-pulse ablation device capable of cooperating with drug administration

An electrical pulse and drug delivery technology, applied in the field of medical appliances, can solve the problems of poor ablation effect and inability to adjust the tumor ablation section, and achieve the effects of increasing the ablation diameter, improving the treatment effect, and simplifying the difficulty.

Active Publication Date: 2021-06-04
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the needle shaft of the radiofrequency ablation electrode needle adopts a hard metal tube, which is only suitable for radiofrequency ablation by percutaneous puncture
[0007] In addition, the existing ablation equipment using double-needle parallel electrodes has a fixed distance between the two electrodes and a fixed electric field. The electric field cannot be adjusted according to the ablation section of the tumor during the advancement of the electrodes, resulting in the need for multiple operations. Achieved effect, poor ablation effect

Method used

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  • Electric-pulse ablation device capable of cooperating with drug administration
  • Electric-pulse ablation device capable of cooperating with drug administration
  • Electric-pulse ablation device capable of cooperating with drug administration

Examples

Experimental program
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Effect test

Embodiment 1

[0038] see Figure 1~5 as well as Figure 8-10 , the present embodiment provides a technical solution: an electric pulse ablation device that can coordinate drug delivery, including an endoscope tube 1 and a drug delivery ablation component, the drug delivery ablation component includes an interventional catheter 2, and the endoscope tube 1 The front end is provided with a tube fixing part 7, and the front end of the interventional catheter 2 is fixed and installed through the tube fixing part 7. The inner wall of the interventional catheter 2 is correspondingly provided with two sets of electrode sets 5 along the length of the square, and electrodes 6 are slid and inserted in the electrode sets 5. The middle part of the inner cavity of the catheter 2 is provided with a push-pull rod 8, and the front end of the push-pull rod 8 is provided with an expansion body 10, and wedge-shaped protrusions 9 are arranged symmetrically near the front ends of the opposite two groups of elect...

Embodiment 2

[0048] Please refer to the attached Figure 6 Compared with embodiment one, embodiment two has only the following improvements:

[0049] In the second embodiment, the expansion body 10 is a sphere, and a plurality of through holes 101 from top to bottom are evenly distributed on the sphere, and the top end of the sphere is fixedly connected to the push-pull rod 8 .

[0050] When the sphere structure moves upward, it can effectively squeeze the wedge-shaped protrusion 9, so that the two groups of electrodes 6 expand, and the set through hole 101 can reduce the resistance of the sphere to the liquid medicine.

Embodiment 3

[0052] Please refer to the attached Figure 7 Compared with embodiment one or embodiment two, embodiment three has only the following improvements:

[0053] In the third embodiment, the expansion body 10 is a cone, and a plurality of dispensing notches 102 are uniformly distributed on the slope of the cone, and the top of the cone is fixedly connected to the push-pull rod 8 .

[0054] Compared with the spherical structure, the conical structure is more convenient for the circulation of the liquid medicine and has less resistance under the premise of retaining the effective expansion electrode 6 .

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Abstract

The invention relates to the technical field of medical appliances and discloses an electric-pulse ablation device capable of cooperating with drug administration. The electric-pulse ablation device comprises an endoscopic tube and a drug administration ablation assembly, wherein the drug administration ablation assembly comprises an intervention catheter, and a tube fixing member is arranged at the front end of the endoscopic tube. The electric-pulse ablation device can be intervened into a body of a patient in a non-invasive or minimally-invasive manner, the intervention catheter can go deep into the body through a natural orifice of the human body directly by dint of the existing endoscopic working passage, and then, a tumor region is ablated by using electric pulses; medicated liquid injection operation can also be carried out through the intervention catheter, and the treatment effect on a tumor can be effectively improved due to combined use of an ablation technology and medicated liquid; and relative movement between a dilation body and electrodes can be driven through an electric push-and-pull mechanism, two groups of electrode tips pricked into tumor tissue can be far away from each other due to wedge-shaped lugs arranged on the electrodes, then, the ablation diameter is increased greatly, the applicability of electric-pulse ablation is improved, and the difficulty of ablation operation is simplified.

Description

technical field [0001] The invention relates to the technical field of medical appliances, in particular to an electric pulse ablation device capable of coordinating drug delivery. Background technique [0002] Compared with traditional surgical operations, medical endoscopes have the characteristics of flexible, simple, and direct operations in surgical operations and routine medical inspections, which greatly improve diagnostic capabilities and work efficiency. [0003] Medical endoscopes use the natural holes of the human body or open a few small holes when necessary. The doctor only needs to skillfully insert the endoscopic lens into the body, and can perform closed surgery in the body outside the body through other surgical instruments and camera display systems. . The functional minimally invasive surgery of medical endoscope has been widely accepted by doctors and patients, and almost all departments in hospitals have widely used medical endoscope technology. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14A61M31/00
CPCA61B18/12A61B18/1482A61M31/00A61B2018/1405A61B2018/1465
Inventor 杨彪
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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