Radiofrequency ablation catheter and system

A radio frequency ablation and catheter technology, applied in medical science, surgery, parts of surgical instruments, etc., can solve problems such as adverse effects of production and assembly, complex cooperation relationship, etc., to achieve compact structure, increase contact area, and prevent overloading.

Active Publication Date: 2021-02-26
HANGZHOU BRONCUS MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing technology, the coordination relationship between the components of the radiofrequency ablation catheter is complex, which has a negative impact on production and assembly, and there is room for improvement in the actual treatment effect

Method used

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  • Radiofrequency ablation catheter and system
  • Radiofrequency ablation catheter and system
  • Radiofrequency ablation catheter and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Reference attached Figure 1a to Figure 3c , the application discloses a radiofrequency ablation catheter, including a tube body 100, the tube body 100 has an opposite distal end 101 and a proximal end 102, and an electrode 103 for releasing energy is installed on the outer wall of the distal end 101 of the tube body 100, the tube body 100 is provided with an inner sleeve 104 and an outer sleeve 105 nested in each other. The inner sleeve 104 is threaded with an elastic wire 107 and a pulling wire 106 that shape the distal end 101 of the tubular body 100. The elastic wire 107 and The pulling wires 106 are arranged side by side and they are fixed to each other near the distal end 101 of the tubular body 100;

[0078] A wire 108 is threaded in the radial gap between the inner sleeve 104 and the outer sleeve 105, and the end of the wire 108 passes through the outer sleeve 105 and the tube wall of the tubular body 100 and is connected to the electrode 103.

[0079] The elas...

Embodiment 2

[0104] refer to Figure 1a to Figure 5d , the present application also discloses a radiofrequency ablation catheter, which includes a tube body 100, in which a pulling wire 106 is threaded, and the distal end 101 of the tube body 100 is an annular section 201, which can be placed on the pulling wire 106 Under the action of deformation, the tube body 100 is also pierced with a deformation constraining tube 200, the deformation constraining tube 200 extends from the distal end 101 of the tube body 100 to at least the proximal end 102 side of the annular segment 201, and the deformation constraining tube 200 is located at the proximal end 102 of the annular segment 201 The stiffness D1 of the side is greater than the stiffness D2 at the ring segment 201 .

[0105] The stiffness D1 is greater than the stiffness D2, and the direct technical effect is that the deformation-constraining tube 200 located at the proximal end 102 of the ring segment 201 is less likely to deform than the ...

Embodiment 3

[0144] refer to Figure 1a , Figure 7a to Figure 7e , the present application also discloses a radiofrequency ablation system, including the radiofrequency ablation catheter and the operating handle 300 in the above technical solution, the tube body 100 of the radiofrequency ablation catheter is provided with a pulling wire 106 for bending, and the operating handle 300 includes:

[0145] The handle body 301, the proximal end of the tube body 100 is directly or indirectly fixed to the handle body 301;

[0146] The connecting piece 302 is slidably installed on the handle body 301, and the connecting piece 302 is provided with a mounting hole 303; the connecting piece 302 is provided with an avoidance channel 304, through which the fluid delivery pipe 120 and the wire 108 pass through the connecting piece 302 and extending outside the handle body;

[0147] The cock 305 is rotatably fitted in the mounting hole 303, and the proximal part of the pulling wire 106 is clamped and fi...

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Abstract

The application discloses a radiofrequency ablation catheter and system. The radiofrequency ablation catheter comprises a catheter body, wherein a traction wire penetrates through the inner part of the catheter body, an annular section is arranged at a far end of the catheter body, the annular section can deform under the action of the traction wire, a deformation restraining sleeve further fixedly penetrates through the inner part of the catheter body, the traction wire is movably arranged in the deformation restraining sleeve in a penetrating mode, an elastic wire used for keeping the self shape of the annular section is further arranged in the deformation restraining sleeve in a penetrating mode, the far end of the traction wire and the elastic wire are relatively fixed, the deformationrestraining sleeve at least extends to the near end side of the annular section from the far end of the catheter body, the rigidity D1 on the near end side of the annular section of the deformation restraining sleeve is larger than the rigidity D2 on the annular section of the deformation restraining sleeve, a deformation restraining catheter is used for adjusting deformation generated when the catheter body is acted by the traction wire, and the deformation restraining catheter defines a penetrating channel. The radiofrequency ablation catheter disclosed by the invention is compact in structure, the annular section can be flexibly changed according to the requirements of different working conditions, and the radiofrequency ablation system can achieve the smooth and controllable ablationprocess.

Description

technical field [0001] The application relates to the field of medical equipment, in particular to a radiofrequency ablation catheter and a system thereof. Background technique [0002] Chronic Obstructive Pulmonary Disease (COPD) is the most common disease of the respiratory system. In our country, according to the existing epidemiological survey evidence, the prevalence of COPD among adults over 40 years old is 10%. %about. [0003] At present, COPD mainly relies on drug treatment, and anticholinergic drugs are used to specifically block M receptors, causing airway smooth muscle relaxation, airway relaxation and mucus secretion reduction, thereby reducing airway obstruction and relieving symptoms of COPD patients. Therapeutic ablation (Targeted Lung Denervatiom, TLD) lung denervation therapy ablation targets the parasympathetic nerve, blocking its innervation, so as to achieve permanent anticholinergic effect. This method has completed a feasibility clinical study in 201...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/12A61B18/14A61B18/1492A61B2018/00023A61B2018/00184A61B2018/00434A61B2018/00541A61B2018/00577A61B2018/1407A61B2018/144A61B2018/1465
Inventor 徐宏秦翔翔刘志宇崔长杰
Owner HANGZHOU BRONCUS MEDICAL CO LTD
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