Left atrial appendage occlusion and ablation device

A sealing part and skeleton technology, applied in medical science, heating surgical instruments, surgery, etc., can solve the problems of difficult radio frequency ablation operation, difficulty in maintaining long-term curative effect, inability to completely isolate, etc., to increase the success rate of cure, implantation The operation is simple and reliable, and the effect of improving efficiency

Pending Publication Date: 2019-09-10
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 radio frequency ablation and blockage are performed independently in the prior art, and the radio frequency 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. , to provide an improved left atrial appendage occlusion device for atrial fibrillation ablation and stroke prevention

Method used

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

Examples

Experimental program
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Effect test

Embodiment approach

[0081] The first implementation mode: the sealing part 110, the ablation part 120 and the anchoring part 130 have 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 .

[0082] The second embodiment: the sealing part 110 and the ablation part 120 have an integrated structure, and the ablation part 120 and the anchoring part 130 are connected by a connecting piece 30; similarly, the integrated structure can be directly fixed together by means of welding or the like The structure can also be an integral structure made of one-piece molding. The function of the connector 30 is to connect the ablation part 120 and the anchor part 130 together, so the structure of the connector 30 is not limited, it can be in any shape according to the different structures of the ablation part 120 and the anchor part 130, for example, in ablation Between the part 120 and the anchor par...

Embodiment 1

[0119] like Figure 1-3 As shown, the left atrial appendage occlusion ablation device is composed of three parts: a sealing part 110 , an ablation part 120 and an anchoring part 130 . Wherein the sealing part 110 is located at the proximal end region of the device, and further includes a mesh skeleton 111, one or more layers of flow-blocking membranes 112, and a connection end 113; the flow-blocking membrane 112 is fixed inside the mesh skeleton 111 by suturing, The flow film 112 can be selected from PET or PTFE coating; the connection end 113 is positioned at the center of the proximal end face, preferably a bolt head, and a delivery wire is connected through the connection end 113, and the delivery wire can pass the radio frequency of the radio frequency source through the connection end 113. Energy is delivered to the electrodes 122 of the ablation section 120 .

[0120] like Figure 1-2 As shown, in this embodiment, the sealing part 110, the ablation part 120 and the anc...

Embodiment 2

[0140] like Figure 8 As shown, the left atrial appendage occlusion ablation device 100 of this embodiment is also composed of three parts: the sealing part 110 , the ablation part 120 and the anchoring part 130 . The sealing part 110 , the ablation part 120 and the anchoring part 130 are three-in-one. The sealing part 110 is a stuffing sealing part formed by the mesh skeleton 111 for sealing the neck of the left atrial appendage, and the stuffing sealing part is consistent with the shape of the neck of the left atrial appendage. The anchoring body 131 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 part 120 .

[0141] The structures of the sealing part 110, the ablation part 120 and the anchoring part 130 of this embodiment are the same as those of the first embodiment, and the main difference is that at least the outer wall surface of the annular skeleton 121...

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Abstract

The invention discloses a left atrial appendage occlusion and ablation device. The device includes a sealing portion located at a near end and used for closing left atrial appendage, and an anchoringportion located at a far end and used for anchoring the device in the left atrial appendage; the device is characterized in that the device also includes an ablation portion used for performing annular ablation on the inner wall adjacent to an entrance of the left atrial appendage; the device further includes the ablation portion used for performing the annular ablation on the inner wall adjacentto an opening of the left atrial appendage; the ablation portion includes an electrode and an annular skeleton used for adhering to the to-be-ablated inner wall of the left atrial appendage, and the electrode is electrically connected with a radio frequency source; and in the whole device, the annular skeleton is not insulated from a portion of the annular skeleton being in contact with the electrode, and the remaining portion is insulated at least on the outer surface of the anchoring portion. The invention provides the left atrial appendage occlusion and ablation device which is capable of simultaneously achieving occlusion and ablation of the left atrial appendage, is simple to operate, is convenient to use, and does not produce significant influence on a surgical mode and operation time.

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 through a delivery catheter, and can simultaneously realize the blockage and ablation of the left atrial appendage. ablation. 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. Because of its special shape and structure, the left atrial appendage (LAA) is not only the most important part of atrial fibrillation thrombosis, but also one of the key areas for its occurrence and maintenan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61B18/14
CPCA61B17/12031A61B17/12122A61B17/12177A61B18/14A61B2018/00351A61B2018/1405
Inventor 唐闽张澍王永胜李建民吴俊飞丘家明
Owner HANGZHOU NUOMAO MEDTECH CO LTD
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