Split left auricle closure device

A split-type, occluder technology, applied in medical science, surgery, ligation, etc., can solve the problems of easy to bring other iatrogenic risks, residual shunt, increase patient pain, etc., to reduce iatrogenic risks, reduce Residual shunt, the effect of convenient connection operation

Pending Publication Date: 2017-03-01
HANGZHOU NUOMAO MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technical solution, there is no obvious difference between the double-disc occluder and the conventional occluder, but the anchoring area of ​​the left atrial appendage is increased by implanting a metal stent to prevent the occluder from falling off, but the anchor cannot be adjusted according to the anatomical structure of the left atrial appendage. The distance between the fixed disk and the sealing disk, the double-disc occluder can move freely in the axial direction between the proximal end surface and the distal end surface of the metal stent, which will cause the waist of the double-disc occluder to be too long or If it is too short, the occluder will be deformed after deployment, resulting in poor sealing of the sealing disk
[0006] In the above technology, the distance between the anchoring disc and the sealing disc is fixed and not adjustable, but due to individual differences, each patient has a different tissue defect or position that needs to be blocked, and the distance between the anchoring disc and the sealing disc is fixed. Often can not well solve the complex and changing clinical needs
For example, taking the ...

Method used

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  • Split left auricle closure device
  • Split left auricle closure device
  • Split left auricle closure device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Such as figure 1 , figure 2 , image 3 As shown, the split left atrial appendage occluder includes an anchoring device 1100 and a sealing disc 1200. The sealing disc 1200 is provided with a first connecting piece 1300, and the anchoring device 1100 is provided with a second connecting piece 1300. Connector 1400 .

[0069] Such as figure 2 As shown, the unfolded form of the first connector 1300 is cylindrical, and the wall of the cylinder is a hollow grid structure. Each cell of the grid structure is approximately rhombus, and the rhombus cell structure can ensure the compression of the first connector 1300. performance. Applying pulling forces in opposite directions to the two axial ends of the first connecting member 1300 can stretch the first connecting member 1300 into an approximately straight line.

[0070] The cylindrical cross-section of the first connecting member 1300 is circular, at least two cells are distributed on any generatrix of the tube, and at l...

Embodiment 2

[0088] The difference between this embodiment and Embodiment 1 is that the structure of the first connecting member 2300 is different, and the structure of the sealing disk 2200 is the same as that of Embodiment 1, including a disk surface 2210 and a waist 2220, each of which is sewn with a flow-blocking film 2230.

[0089] Such as Figure 8 As shown, the first connecting piece 2300 is a cylindrical structure with both ends closed, and the wall of the cylindrical structure is braided by nickel-titanium alloy wires. The second fixed end 2242 of the sealing disc 2200 is fixedly connected.

[0090] The cylinder wall made of nickel-titanium alloy wire has a rhombus-shaped cell structure. Figure 8 the shape shown.

[0091] The cylindrical cross section of the first connecting piece 2300 is circular, at least two cells are distributed on any generatrix of the tube, and at least two cells are distributed along the circumference of the tube, and each cell is a limiting hole 2310 ...

Embodiment 3

[0096] Such as Figure 11 As shown, the split left atrial appendage occluder includes an anchoring device 3100 and a sealing disc 3200. The sealing disc 3200 is provided with a second connecting member 3400, and the anchoring device 3100 is provided with a first connecting member 3400 that matches the second connecting member Connector 3300.

[0097] In this embodiment, the structure of the sealing disc 3200 is the same as that in Embodiment 1, and the second connecting member 3400 includes two hooks 3410 and tie bars 3420 connected between the hooks 3410 . The roots of the two hooks 3410 approach each other and are fixedly connected to the second fixed end 3242 of the sealing disc 3200. The two hooks 3410 are symmetrically distributed on both sides of the second fixed end 3242. Each hook 3410 is heated by a Nitinol wire. Shaped, the two hooks 3410 are on the same plane.

[0098] The roots of the two hooks 3410 are connected with a tie bar 3420, and the tie bar 3420 is used ...

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Abstract

The invention discloses a split left auricle closure device. The split left auricle closure device comprises an anchor device and a seal disc which are arranged in a split mode, one of the anchor device and the seal disc is provided with a cylindrical first connector, and the other one of the anchor device and the seal disc is provided with a second connector matched with the cylindrical wall of the first connector to achieve connection. A limiting hole and hook matching mode can be adopted for the first connector and the second connector, and an interference fit mode can also be adopted at the same time or independently. According to the separable left auricle closure device, the distance between the anchor device and the seal disc can be adjusted according to the form of the left auricle, and thus the seal disc can completely isolate the left atrium from the left auricle.

Description

technical field [0001] The invention relates to the field of transcatheter interventional medical devices, in particular to a split-type left atrial appendage occluder. Background technique [0002] Studies have confirmed that more than 90% of thrombi in patients with non-valvular atrial fibrillation form in the left atrial appendage, and sealing the left atrial appendage can reduce the risk of thromboembolism in patients with atrial fibrillation. The left atrial appendage occluder is an implantable device that enters the human body through a catheter and can close the left atrial appendage. It can block the blood flow into the left atrial appendage, eliminate the risk of thrombosis in the left atrial appendage due to atrial fibrillation, and prevent stroke. [0003] Left atrial appendage occluder implantation is a minimally invasive interventional procedure with short treatment period, less trauma, and quick results. The earliest clinically used left atrial appendage occlud...

Claims

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Application Information

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IPC IPC(8): A61B17/12
CPCA61B17/12031A61B17/12122A61B17/12172A61B2017/00243
Inventor 张庭超李阳王永胜
Owner HANGZHOU NUOMAO MEDTECH CO LTD
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