Left atrial appendage closure device

Abstract

The invention relates to a left atrial appendage closure device. The left atrial appendage closure device includes a sealing disc, a fixing disc positioned at one side of the sealing disc, and a connection member connecting the sealing disc and the fixing disc; the connection member is of a silk weaved structure; under the action of the same radial force, the radius-length variation of the sealing disc is greater than the radius-length variation of the fixing disc; or under the action of the same radial force, the radius-length variation rate of the sealing disc is greater than the radius-length variation rate of the fixing disc. According to the left atrial appendage closure device, the fixing disc and the sealing disc are connected through the connection member of the silk weaved structure, the distance and the angle between the fixing disc and the sealing disc can be adjusted, and then the left atrial appendage closure device can adapt to a left atrial appendage having a large bending angle (such as a chicken wing shape) and a large distance between the fixing disc and the sealing disc (such as a cone shape), and the failure risk of left atrial appendage closure can be lowered; and the distance between the fixing disc and the sealing disc can be adjusted, and then the fixing disc can be positioned at a deep part of the left atrial appendage, the stability of the left atrial appendage closure device can be improved, and the apparatus embolism risk can be lowered.

Description

Technical field [0001] The invention relates to medical equipment, in particular to a left atrial appendage occluder. Background technique [0002] At present, the occluder can be placed in the left atrial appendage through catheter intervention to prevent the formation of thrombus in the left atrial appendage due to atrial fibrillation, and to prevent the thrombus from ascending to the brain and cause stroke; or to prevent the thrombus from reaching other parts of the body through the human blood circulation system. Systemic embolism caused by. Such a left atrial appendage occluder can roughly include an integrated occluder and a split occluder in terms of structure. For example, a split occluder usually includes a fixing part and a sealing part that are connected to each other. The fixing part is placed in the cavity of the left atrial appendage to fix the entire occluder. The sealing part seals the mouth of the left atrial appendage to block the inflow of blood. Inside the c...

AI Technical Summary

Problems solved by technology

For example, once the fixing component is fixed in the cavity of the left atrial appendage, the sealing component will be pulled in the process of conforming to the cavity structure of the left atrial appendage and the activity of the left atrial appendage itself, and the sealing component may not be able to fully fit the left atrial appendage during the pulling process The mouth of the left atrial appendage forms a blood flow leakage channel between the left atrium and the left atrial appendage, so that the best sealing effect cannot be achieved, and then the thrombus in the left atrial appendage flows out of the left atrial appendage, causing a stroke

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