Transcatheter left atrial appendage plugging system

A catheter and body blocking technology, applied in the field of medical devices, can solve the problems of delaying the degree of endothelialization, delaying the time of endothelialization, easy to puncture, etc., achieving reasonable position and number design, promoting the process of endothelialization, and small endothelialization area. Effect

CN104856741AActive Publication Date: 2015-08-26GUANGDONG PULSE MEDICAL SCI & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-08-26

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Abstract

The invention relates to a transcatheter left atrial appendage plugging system. The system is composed of an inner plugging body, a connecting rod, a direction regulator and an outer plugging body, all of which are orderly arranged from the inner end to the outer end; the inner plugging body is provided with a mesh basket support and a first plugging film; the mesh basket support is formed by use of mesh basket wires and riveting hooks and protective balls are arranged on the mesh basket wires; the connecting rod is of a structure adjustable in length in the axial direction; the direction regulator is used for regulating the direction of the connecting rod; the outer plugging body is of a meshed hollow structure in a stand shape; the cross section of the outer plugging body is circular, while the longitudinal section of the outer plugging body is isosceles trapezoid-shaped; a second plugging film is arranged inside the outer plugging body; the first plugging film and the second plugging film both are microporous water-permeable films. According to the design ideal of inside plugging, the transcatheter left atrial appendage plugging system can be completely plugged without any residual cavity; the plugging system is suitable for the left atrial appendages different in shape and depth; besides, the plugging system is small in endothelialization area, steady in position after implantation and good in safety.
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Description

technical field

[0001] The invention relates to the technical field of medical devices, in particular to a transcatheter left atrial appendage occlusion system. Background technique

[0002] Atrial fibrillation is a common heart rhythm disorder. The incidence of atrial fibrillation in adults is about 0.4%-2%. It is conservatively estimated that there are currently 8-10 million patients with atrial fibrillation in China. Patients with atrial fibrillation have a more than five-fold increased risk of stroke. Oral warfarin anticoagulation has been the cornerstone of anticoagulation therapy for AF. However, many defects and inconveniences in the application of warfarin greatly limit its clinical application. In my country, less than 10% of patients need long-term warfarin anticoagulant therapy according to the guidelines. Studies have confirmed that about 91% of thrombi in patients with atrial fibrillation originate from the left atrial appendage, so blocking the left atrial...

Examples

Embodiment 1

[0032] Embodiment 1 Transcatheter left atrial appendage closure system of the present invention (1)

[0033] See figure 1 , figure 1 It is a structural schematic diagram of the transcatheter left atrial appendage occlusion system of Example 1. The transcatheter left atrial appendage occlusion system is sequentially provided with an inner occlusion body 1 , a connecting rod 2 , a direction adjuster 3 and an outer occlusion body 4 from the inner end to the outer end. The inner occluding body 1 includes a stretched skeleton 11 and a first occluding membrane 12 . The stretching skeleton 11 is composed of eight basket wires 111; the basket wires 111 are arc-shaped in working condition and have a tangent point with the wall of the left atrial appendage; one end of the eight basket wires 111 is gathered into a bunch And be fixed on the inner end face of connecting rod 2, and each net basket wire 111 is evenly distributed on the circumference around the axis of connecting rod 2, so...

Embodiment 2

[0037] Embodiment 2 Transcatheter left atrial appendage closure system of the present invention (2)

[0038] See image 3 , image 3 It is a structural schematic diagram of the transcatheter left atrial appendage occlusion system of embodiment 2. The transcatheter left atrial appendage occlusion system is basically the same as that of Embodiment 1, except that the diameter of the inner end surface 41 of the outer occluder is larger than the diameter of the outer end surface 42 of the outer occluder.

[0039] The transcatheter left atrial appendage occlusion system of this embodiment is suitable for occluding the left atrial appendage whose outer end diameter is larger than the inner end diameter.

Embodiment 3

[0040] Embodiment 3 Transcatheter left atrial appendage closure system of the present invention (3)

[0041] See Figure 4 , Figure 4 It is a structural schematic diagram of the transcatheter left atrial appendage closure system of Example 3. The transcatheter left atrial appendage occlusion system is basically the same as that in Example 1, except that the maximum diameter of the outer occlusion body 4 is 10-25 mm longer than the maximum diameter of the inner occlusion body 1 .

[0042] The transcatheter left atrial appendage occlusion system of this embodiment is suitable for occluding the left atrial appendage with a large difference between the diameter of the outer end and the diameter of the inner end.