Ablation catheter and ablation system

An ablation catheter and tube body technology, which is applied in the field of medical devices, can solve problems such as unfavorable health of doctors and patients, influence on the promotion of ablation surgery, and different shapes of pulmonary veins, so as to facilitate real-time judgment, improve occlusion effect, and improve adaptability Effect

Active Publication Date: 2019-10-11
SHANGHAI MICROPORT EP MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ablation operation is simple, but due to the different shapes of the pulmonary veins, doctors need to use a lot of X-rays during the operation to ensure that the ablation catheter is in place and blocked normally
During the operation, doctors and patients are exposed to the X-ray environment for a long time, which is not conducive to the health of doctors and patients, and the ablation catheter of a single size cannot be well applied to various forms of pulmonary veins, which affects the efficiency of ablation surgery. to promote

Method used

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  • Ablation catheter and ablation system
  • Ablation catheter and ablation system
  • Ablation catheter and ablation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides an ablation catheter 100 . refer to figure 1 , figure 1 It is a schematic structural diagram of the ablation catheter in Embodiment 1 of the present invention. The ablation catheter 100 includes a rod-shaped control member 110 , an outer catheter and a balloon 130 . The outer catheter includes a first tube body 121 and a second tube body 122 . The first tube body 121 is fixedly connected to the distal end of the rod-shaped control member 110 . The second pipe body 122 is sheathed outside the rod-shaped control member 110 , and the rod-shaped control member 110 and the first pipe body 121 can move along the second pipe body 122 relative to the second pipe body 122 . The axis moves forward and backward. The balloon 130 is disposed outside the rod-shaped control member 110 , and its proximal end is fixedly connected to the second tube body 122 , and its distal end is fixedly connected to the first tube body 121 .

[0062] Through the above str...

Embodiment 2

[0066] refer to figure 2 , figure 2 It is a schematic structural diagram of the ablation catheter in Embodiment 2 of the present invention. Embodiment 2 is similar to Embodiment 1, and the similarities will not be repeated. The difference is that the ablation catheter 100 also includes a shape memory element 170 . The shape memory element 170 is used to adjust the size and shape of the balloon 130 . Specifically, the distal end of the shape memory element 170 is fixedly connected to the first tube body 121 , and the proximal end of the shape memory element 170 is fixedly connected to the second tube body 122 . The shape memory element 170 has a first state and a second state. In the first state, the distance between the proximal end and the distal end of the shape memory element 170 is a predetermined distance, and the shape memory element 170 has a first shape; in the second state, the shape memory element 170 The distance between the proximal end and the distal end is l...

Embodiment 3

[0076] refer to image 3 , image 3 It is a partially enlarged schematic diagram of the ablation catheter in Embodiment 3 of the present invention, Figure 4 yes image 3 The cross-sectional view of the ablation catheter in A-A direction, Figure 5 yes image 3 The cross-sectional view of the ablation catheter in the B-B direction, the third embodiment is similar to the first embodiment, and the similarities will not be repeated. The difference is that the rod-shaped control member 110 includes a main body section 112 and a balloon section 113 . The main body section 112 and the balloon section 113 are fixedly connected. The balloon segment 113 includes a first inner tube 114 and at least one pull cord 111a (refer to Figure 4), the main body section 112 includes a second inner tube; when the traction rope 111a is straightened, the first inner tube 114 is set in the balloon 130, and the second inner tube is set in the second tube Body 122. The at least one traction rope...

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Abstract

The invention provides an ablation catheter and an ablation system. The ablation catheter comprises a rod-shaped controller, an outer catheter body and a balloon, wherein the outer catheter body comprises a first tube body and a second tube body, the first tube body is fixedly connected with the far end of the rod-shaped controller, the second tube body sleeves the rod-shaped controller, the rod-shaped controller can move relative to the second tube body in the axial direction of the second tube body, the balloon is arranged outside the rod-shaped controller, the near end of the balloon is fixedly connected with the second tube body, and the far end of the balloon is fixedly connected with the first tube body. When the rod-shaped controller moves relative to the second tube body in the axial direction of the second tube body, the distance between the far end of the second tube body and the far end of the first tube body can change, the balloon can deform under the traction of the firsttube body and the second tube body, and therefore the shape of the balloon can be adjusted, the adaptability of the balloon to the shapes of different target blocked objects can be improved, and theblocking effect of the balloon can be improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an ablation catheter and an ablation system. Background technique [0002] Patients with atrial fibrillation are at high risk of stroke. In atrial fibrillation, the atrium beats irregularly and rapidly, losing its systolic function. Blood stagnates in the atrium and forms a thrombus. The thrombus falls off and enters the brain along with the artery, which is a stroke. Hypertension has the characteristics of high incidence, low awareness rate and great harm. Experimental data have proved that hypertension is related to the high excitability of renal sympathetic nerve in patients. Currently, these diseases are often treated with catheter ablation. For example, applying energy to the pulmonary vein through the ablation catheter to ablate the pulmonary vein potential to achieve the effect of treating atrial fibrillation; ablation through the ablation catheter to block the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/02
CPCA61B18/02A61B2018/0022A61B2018/00434A61B2018/00345A61B2018/00791A61B2018/0212A61B2018/00773
Inventor 苗涛梁波蔡丽妮王燕沈磊赵丽孙毅勇
Owner SHANGHAI MICROPORT EP MEDTECH CO LTD
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