left atrial appendage occluder
A technology of occluders and seals, which is applied in the field of medical devices, can solve problems such as pericardial tamponade, pericardial effusion, and fixed parts puncture the wall of the left atrial appendage, so as to achieve the effect of enhancing friction and avoiding pericardial effusion
Active Publication Date: 2019-07-09
LIFETECH SCI (SHENZHEN) CO LTD
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Problems solved by technology
However, the deep part of the left atrial appendage cavity is also the thinner part of the left atrial appendage wall, which may easily cause the fixed parts to puncture the left atrial appendage wall, which may cause pericardial effusion and even cardiac tamponade and other adverse consequences
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[0034] In order to describe the structure of the left atrial appendage occluder more clearly, the present invention defines the terms "distal end" and "proximal end", which are commonly used terms in the field of interventional medical devices. Specifically, "distal end" means the end away from the operator during the operation, and "near end" means the end close to the operator during the operation.
[0035] figure 1 It shows a schematic diagram of the left atrial appendage occluder implanted in the left atrial appendage according to an embodiment of the present invention, and the left atrial appendage 2 is located in the left atrium 1 . The left atrial appendage occluder includes a sealing member 21 , a fixing member 22 located on the distal side of the sealing member 21 , and a connecting member 23 connecting the sealing member 21 and the fixing member 22 .
[0036] Also refer to figure 2 and image 3 , the fixing member 22 is a wire braided structure with a smooth surf...
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The invention relates to a left atrial appendage occluder, which includes a sealing member, a fixing member located on one side of the sealing member, and a connector connecting the sealing member and the fixing member; the sealing member includes a skeleton and a A coating on the skeleton, the skeleton includes a proximal side and a support peripheral surface connected to the proximal side and extending distally, the coating at least covers the proximal side; the fixing member is cylindrical Silk braided structure, the connecting piece is an elastic connecting piece. In the left atrial appendage occluder of the present invention, the fixing member has a braided structure and has a bump-free and smooth appearance. When the fixing member is placed at the corresponding position of the left atrial appendage, it can not only deform to adapt to the irregularities deep in the left atrial appendage cavity. The shape of the cavity wall can also be adapted to enhance the friction with the cavity wall through this deformation, so that the left atrial appendage occluder can be firmly placed in the left atrial appendage cavity, and there is no need to install an anchor for fixing the occluder, which can avoid The anchor needle penetrates the thin wall of the left atrial appendage cavity.
Description
technical field [0001] The invention relates to medical equipment, in particular to a left atrial appendage occluder. Background technique [0002] At present, an occluder can be placed in the left atrial appendage through catheter intervention to prevent the formation of a thrombus in the left atrial appendage due to atrial fibrillation, avoiding the stroke caused by the thrombus ascending to the brain; or preventing the thrombus from reaching other parts of the body through the human blood circulation system. systemic embolism. This type of left atrial appendage occluder can roughly include an integral type occluder and a split type occluder structurally. For example, a split occluder usually includes a fixing part and a sealing part connected to each other. The fixing part is placed in the cavity of the left atrial appendage to fix the entire occluder, and the sealing part seals the ostium of the left atrial appendage for blocking blood flow into the Inside the cavity o...
Claims
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IPC IPC(8): A61B17/12
CPCA61B17/12022A61B17/12027A61B17/12122A61B17/1214A61F2/02A61B17/12172A61B17/12177
Inventor 李安宁
Owner LIFETECH SCI (SHENZHEN) CO LTD