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Cardiac pulse electric field ablation catheter device

A pulsed electric field and ablation catheter technology, which is applied in the field of medical devices, can solve problems such as uneven spacing, unstable connection, and discontinuous ablation, and achieve reasonable distribution, increased circumferential electrode density, and good ablation continuity.

Inactive Publication Date: 2022-01-21
铂杭(杭州)医疗科技合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the electrode density in the circumferential direction is increased, the metal flat wire is connected to the inner tube of the pulsed electric field ablation catheter by bonding, and the connection is unstable. The spacing between the branches is uneven, which leads to discontinuous ablation; and the existing technology uses metal as the supporting structure, which has the risk of discharge open circuit

Method used

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  • Cardiac pulse electric field ablation catheter device
  • Cardiac pulse electric field ablation catheter device
  • Cardiac pulse electric field ablation catheter device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 and figure 2 As shown, in this embodiment, the cardiac pulse electric field ablation catheter device provided includes a catheter probe assembly 1 and an adjustment assembly 2 . The catheter probe assembly 1 includes a plurality of flat flexible supports 11 , and each flexible support 11 is provided with an electrode assembly 12 . The adjustment assembly 2 includes an outer tube 21 and an inner tube 22 arranged in the outer tube 21 and capable of moving axially along the outer tube 21. One end of the flexible support body 11 is connected to the distal end of the outer tube 21, and a plurality of flexible support bodies 11 are distributed at intervals along the circumference of the outer tube 21, the far end of the inner tube 22 is provided with a connector 23, the other end of the flexible support body 11 is connected to the connector 23, and when the flexible support body 11 expands, the connector 23 makes the flexible support The spacing between th...

Embodiment 2

[0059] Such as figure 1 and figure 2 As shown, in this embodiment, the cardiac pulse electric field ablation catheter device provided includes a catheter probe assembly 1 and an adjustment assembly 2 . The catheter probe assembly 1 includes a plurality of flat flexible supports 11 , and each flexible support 11 is provided with an electrode assembly 12 . The adjustment assembly 2 includes an outer tube 21 and an inner tube 22 arranged in the outer tube 21 and capable of moving axially along the outer tube 21. One end of the flexible support body 11 is connected to the distal end of the outer tube 21, and a plurality of flexible support bodies 11 are distributed at intervals along the circumference of the outer tube 21, the far end of the inner tube 22 is provided with a connector 23, the other end of the flexible support body 11 is connected to the connector 23, and when the flexible support body 11 expands, the connector 23 makes the flexible support The spacing between th...

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PUM

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Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a cardiac pulse electric field ablation catheter device. According to the cardiac pulse electric field ablation catheter device provided by the invention, flexible supporting bodies are connected with connecting pieces; when the flexible supporting bodies expand, the connecting pieces enable the distance between the flexible supporting bodies to be uniform and reasonable in distribution, so that a catheter probe assembly is good in ablation continuity in the circumferential direction; the flexible supporting body is of a flat structure; the number of the flexible supporting bodies in the circumferential direction of the catheter probe assembly is increased; then the circumferential electrode density of the catheter probe assembly is increased; in addition, the flexible supporting body is connected with the connecting piece; compared with the prior art, the mode that the flexible supporting body is bonded with an inner pipe is more stable and safer; and the flexible supporting body is made of a polymer insulating material, so that the flexible supporting body has better electrical safety performance.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a heart pulse electric field ablation catheter device. Background technique [0002] Tissue ablation is commonly used to treat various cardiac arrhythmias, including atrial fibrillation. To treat cardiac arrhythmias, ablation catheters may be used to perform ablation to alter tissue, for example to prevent abnormal electrical propagation and / or disrupt abnormal electrical conduction through heart tissue. [0003] At present, the multi-branch expandable structure is one of the main design directions of the current pulsed electric field ablation catheter probe. Only the multi-electrode on each branch can discharge. Each branch forms an ablation area independently and the area is small, but multi-branch can The probes of pulsed electric field ablation catheters with expandable structures generally have unstable spacing between branches of the expandable structure and a limi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/14A61B18/12
CPCA61B18/1492A61B18/12A61B2018/00577A61B2018/00351A61B2018/00375A61B2018/00083A61B2018/0022
Inventor 不公告发明人
Owner 铂杭(杭州)医疗科技合伙企业(有限合伙)