Double umbrella type left auricle sealing device

A sealing device and sealing disc technology, which is applied in the field of auxiliary devices for cardiac therapy and double-umbrella left atrial appendage sealing devices, can solve problems such as complicated operation, difficult fixation, and cardiac tamponade, achieving good stability, shortening operation time, Completely closed effect

Inactive Publication Date: 2014-10-22
孙伟 +2
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design a double-umbrella left atrial appendage closure device, which is percutaneously punctured through the atrial septum, in view of the problems of complicated operation, difficult fixation, risk of thrombus, shedding and cardiac tamponade in the existing left atrial appendage occluder. Placed in the left atrial appendage, closing the left atrial appendage

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  • Double umbrella type left auricle sealing device
  • Double umbrella type left auricle sealing device
  • Double umbrella type left auricle sealing device

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Such as Figure 1-5 shown.

[0020] A double-umbrella left atrial appendage closure device, which is mainly composed of three parts: the first fixed umbrella 1, the second fixed umbrella 2 and the closure plate 3, and the two umbrellas are connected by a welded double ring 8 ( figure 2 ). The fixed umbrella is similar to the umbrella rib of an umbrella (including the umbrella handle, without the umbrella surface), and is composed of 6, 8, 12 or more expanded shape-memory nickel-titanium alloy wires with 4 intervals, image 3 The center is composed of 8 self-expanding shape memory nickel-titanium alloy wires with 4 intervals at 45 degrees (such as image 3 ), each self-expanding shape-memory nickel-titanium alloy wire 4 has the same shape as the umbrella profile, and a spherical anti-stab ball 7 is connected to the end to prevent the heart...

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Abstract

A double umbrella type left auricle sealing device is characterized by comprising a first fixed umbrella, a second fixed umbrella and a sealing disc. The section of the first fixed umbrella and the section of the second fixed umbrella are in an umbrella rib shape and formed by a plurality of expanded shape memory nitinol wires, an umbrella handle of the first fixed umbrella is crookedly connected with an umbrella top of the second fixed umbrella, an umbrella handle of the second fixed umbrella is connected with one side of the sealing disc, and the other side of the sealing disc is movably connected with one end of an operating rod of a release device. The whole sealing device is loaded into a catheter through the top of the sealing disc to be conveyed; after the sealing device leaves the catheter, first the first fixed umbrella is automatically formed, then the second fixed umbrella is automatically formed and can be automatically bent to the adjust the angle along with the ear canal of the left auricle, finally the sealing disc is automatically expanded to recover to be in a disc shape, and the left auricle is sealed. The double umbrella type left auricle sealing device is convenient to operate and can reduce operation risk, shorten operation time and improve operation success rate.

Description

technical field [0001] The invention relates to a medical device, especially an auxiliary device for heart treatment, in particular to a double-umbrella left atrial appendage sealing device for sealing the left atrial appendage to improve operation efficiency and success rate. Background technique [0002] As we all know, atrial fibrillation is the most common arrhythmia clinically. Thrombotic stroke is a major complication secondary to atrial fibrillation and one of the leading causes of death and disability. The left atrial appendage is the main site of thrombus in patients with atrial fibrillation [J. L. Blackshear and J. A. Odell, Annals of Thoracic Surgery , 61(2): 755–759, 1996.]. Closure of the left atrial appendage can effectively reduce stroke events in patients with atrial fibrillation. Currently, techniques for sealing the LAA include: 1. Surgical LAA resection; 2. Transcatheter closure of the LAA. Surgical resection of the left atrial appendage has the disadv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00
CPCA61B17/12031A61B17/12122A61B17/1214A61B17/12172A61B2017/00606
Inventor 孙伟孔祥清盛燕辉
Owner 孙伟
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