Left atrial appendage occlusion ablation device

A seal and proximal end technology, applied in the field of left atrial appendage occlusion and ablation devices, can solve the problems of incomplete isolation, difficulty in maintaining long-term curative effect, long-term use, etc., and achieve the effect of increasing the success rate of healing

Pending Publication Date: 2019-01-04
HANGZHOU NUOMAO MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that radiofrequency ablation and blockage are performed independently in the prior art, in which the radiofrequency ablation operation is difficult and takes a long time, and there will be situations where it cannot be completely isolated and it is difficult to maintain long-term curative effect , providing a left atrial appendage occlusion ablation device that cooperates to achieve atrial fibrillation ablation and stroke prevention

Method used

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  • Left atrial appendage occlusion ablation device
  • Left atrial appendage occlusion ablation device
  • Left atrial appendage occlusion ablation device

Examples

Experimental program
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Effect test

Embodiment approach

[0068] The first implementation mode: the sealing member 1100, the ablation member 1200 and the anchoring member 1300 are in an integrated structure; the integrated structure can be a structure directly fixed together by welding or the like, or an integral structure made by integral molding .

[0069] The second embodiment: the sealing member 1100 and the ablation member 1200 have an integrated structure, and the ablation member 1200 and the anchor member 1300 are connected through the connecting member 30; similarly, the integrated structure can be directly fixed together by welding or other means The structure can also be an integral structure made of one-piece molding. The function of the connecting piece 30 is to connect the ablation piece 1200 and the anchoring piece 1300 together, so the structure of the connecting piece 30 is not limited, it can be in any shape according to the different structures of the ablation piece 1200 and the anchoring piece 1300, for example, in...

Embodiment 1

[0100] Such as Figure 1-3 As shown, the left atrial appendage blockage ablation device 1000 is composed of three parts: a sealing element 1100 , an ablation element 1200 and an anchor element 1300 . Wherein the seal 1100 is located in the proximal end region, and further includes a metal grid skeleton 1110, one or more layers of flow blocking film 1120, and a connection end 1130; the connection end 1130 is located in the center of the proximal end surface 1140, preferably using a bolt head, through The connecting end 1130 is connected with a delivery wire, and the delivery wire transmits the radio frequency energy of the radio frequency source to the ablation element 1200 .

[0101] In this embodiment, the sealing member 1100, the ablation member 1200 and the anchoring member 1300 have a three-in-one structure, that is, the metal mesh skeleton 1110 of the sealing member 1100, the metal ring skeleton 1210 of the ablation member 1200 and the anchoring member 1300. The main bod...

Embodiment 2

[0110] Such as Figure 7 As shown, the left atrial appendage blockage ablation device 1000 of this embodiment is also composed of three parts: a sealing member 1100 , an ablation member 1200 and an anchor member 1300 . The sealing member 1100, the ablation member 1200 and the anchoring member 1300 have a three-in-one structure. The sealing member 1100 is a sealing member formed by a metal mesh skeleton 1110 for sealing the neck of the left atrial appendage, and the sealing member is in conformity with the shape of the neck of the left atrial appendage. The anchoring body 1310 is a cylindrical structure, the distal end of the cylindrical structure is closed, and the proximal end of the cylindrical structure is integrated with the ablation element 1200 .

[0111] The structures of the sealing member 1100, the ablation member 1200 and the anchoring member 1300 in this embodiment are the same as in the first embodiment, the main difference is that the sealing member 1100 is seale...

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Abstract

The invention discloses a left atrial appendage occlusion ablation device which includes a seal connected in sequence for close that left atrial appendage, an ablation member for annularly ablating aninner wall adjacent to an opening of the left atrial appendage, an anchor member for anchoring the device in the left atrial appendage, and a sealing member for sequentially closing the left atrial appendage. The sealing member is provided with a sealing surface which is in contact with and insulated from the left atrial appendage opening or / and the left atrial appendage inner wall; The ablationpart is provided with an electrically conductive ablation surface to be adhered with the inner wall of the left atrial appendage to be ablated, and the ablation surface is electrically connected witha radio frequency source. An outer wall surface of the anchor near or in contact with an inner wall of the left atrial appendage is insulated. In the seal, ablation, and anchor, a barrier closure of the left atrial appendage is provided at least in the radial direction of the seal. The invention provides a left atrial appendage occlusion ablation device cooperating with atrial fibrillation ablation and stroke prevention.

Description

technical field [0001] The invention belongs to the technical field of interventional medical devices, and relates to a left atrial appendage blockage and ablation device. The device uses percutaneous puncture to transport it to the position of the left atrial appendage of the heart through a delivery catheter, blocks the left atrial appendage, and then passes through the device. Radiofrequency ablation of the ostium of the left atrial appendage was performed. Background technique [0002] Atrial fibrillation (abbreviated as atrial fibrillation) is the most common sustained arrhythmia, and with age, the incidence of atrial fibrillation continues to increase, reaching 10% in people over 75 years old. The prevalence of atrial fibrillation is also closely related to diseases such as coronary heart disease, hypertension and heart failure. Due to its special shape and structure, the left atrial appendage (LAA) is not only the most important part of atrial fibrillation thrombosis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12
CPCA61B18/12A61B2018/00059A61B2018/00351A61B2018/00589
Inventor 唐闽张澍王永胜李建民吴俊飞赵亦伟
Owner HANGZHOU NUOMAO MEDTECH CO LTD
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