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Plugging system for left auricle

Active Publication Date: 2015-02-18
SHENZHEN KYD BIOMEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anchoring thorns piercing the left atrium are repeatedly positioned, and when the occluder is recovered, it will be stuck on the edge of the sheath wall, making the occluder unable to be recovered, and repeated positioning
Moreover, the fixed plate of this hybrid left atrial appendage occluder usually deforms greatly to reverse the direction of the anchoring spines, causing the tension and deformation of the fixed plate to reach the limit value of the material
This device has poor fatigue strength in permanent implantation, and is prone to breakage, puncturing other tissues such as the heart, and endangering life

Method used

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  • Plugging system for left auricle
  • Plugging system for left auricle
  • Plugging system for left auricle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] like figure 1 , figure 2 and image 3 As shown, the left atrial appendage occlusion system 100 involved in the present invention includes an occlusion disc 1 and an anchor disc 2 connected to the occlusion disc 1, wherein as in image 3 As shown, the plugging disc 1 is woven into a braided net with nickel-titanium wire, heat-treated into a disc shape, the two ends are fixed with a steel sleeve, and one end of the plugging disc 1 and the anchoring disc 2 are connected with a steel sleeve 4 . The other end is provided with a threaded nut 3 which is connected to the pusher of the conveying device. Similarly, the anchoring disc 2 is also woven into a woven mesh with nickel-titanium wire 8 (such as figure 2 shown), heat-treated into a disc shape, the two ends are fixed with steel sleeves 4, and PFTE or PET flow blocking films are sutured inside the blocking disc 1 and the anchoring disc 2 respectively. There are 6 wires, and the nickel-titanium wire 6 is densely wound ...

Embodiment 2

[0047] like Figure 5 , Image 6 and Figure 7 As shown, the left atrial appendage occlusion system involved in the present invention includes an occlusion disc 1 and an anchor disc 2 connected to the occlusion disc 1 . The blocking disc 1 and the anchoring disc 2 are designed in one piece. Nickel-titanium wire is woven into a braided net, both ends are fixed with steel sleeves 4, and heat-treated into a double-disc structure, with a small waist 11 between the blocking plate 1 and the anchoring plate 2. The other end of the blocking disc 1 is provided with a thread 3, which is connected with the pusher 15 of the conveying device. The blocking disc 1 and the anchoring disc 2 are respectively sutured with PFTE or PET flow blocking film. Among them, there are eight nickel-titanium wires 6 in the nickel-titanium wires used for weaving, which are densely wound by two nickel-titanium wires. During weaving, the densely wound nickel-titanium wire 6 is woven in the same weaving ma...

Embodiment 3

[0049] like Figure 14 As shown, the left atrial appendage occlusion system involved in the present invention includes an occlusion disc 1 and an anchor disc 2 connected to the occlusion disc 1 . The blocking disk 1 and the anchoring disk 2 connected with the blocking disk 1 are of a one-piece design. The nickel-titanium wire is woven into a braided net, and the two ends are fixed with steel sleeves 4, which are heat-treated into a double-disc structure. The other end of the blocking disc 1 is provided with a thread 3, which is connected with the pusher 15 of the conveying device. The blocking disc 1 and the anchoring disc 2 are respectively sutured with PFTE or PET flow blocking film. Among them, there are eight nickel-titanium wires 6 in the nickel-titanium wires used for weaving, which are densely wound by two nickel-titanium wires. During weaving, the densely wound nickel-titanium wire 6 is woven in the same weaving manner as other single nickel-titanium wires. During ...

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Abstract

The invention discloses a plugging system for a left auricle. The plugging system comprises a plugging disc and an anchoring disc; the plugging disc is formed by weaving nickel-titanium alloy wires and conducting heat treatment on the nickel-titanium alloy wires to form the disc-shaped structure; the anchoring disc is also formed by weaving nickel-titanium alloy wires and conducting heat treatment on the nickel-titanium alloy wires to form a column-shaped structure; the anchoring disc at least comprises a thick filament, the thick filament is formed by closely winding the nickel-titanium alloy wires; when the anchoring disc is located in a proper position, at least one nickel-titanium alloy wire stretches outwards towards an inclined direction from the anchoring disc, and faces the plugging disc as an anchoring thorn. The plugging system for the left auricle disclosed by the invention is used for blocking the left auricle, is high in effect of blocking blood clots inside the left auricle from flowing out, can be repeatedly positioned, is fixedly stable, and is resistant to fatigue.

Description

technical field [0001] The invention relates to a left atrial appendage blocking system with good effect of blocking the left atrial appendage, blocking outflow of thrombus in the left atrial appendage, repeatable positioning, stable fixation and fatigue resistance. Background technique [0002] At present, with the development of interventional devices, many diseases that cannot be treated by surgery have been cured. Compared with surgical treatment, interventional treatment has less trauma, quicker recovery and better curative effect. After nearly half a century of development, interventional therapy has developed rapidly, and various interventional medical device products have also been produced. More and more diseases and patients are treated. [0003] Atrial fibrillation (AF) is one of the most common cardiac arrhythmias. In addition to the discomfort caused by palpitations, complications such as thromboembolism are the main hazards of atrial fibrillation. In patient...

Claims

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Application Information

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IPC IPC(8): A61B17/12
CPCA61B17/12122A61B17/1214A61B2017/1205A61B17/12172
Inventor 陈奕龙
Owner SHENZHEN KYD BIOMEDICAL TECH CO LTD
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