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Left atrial appendage closure system

An occlusion disc and anchoring technology, which is used in medical science, surgery, ligation, etc., can solve the problems of being stuck on the edge of the sheath tube wall, the occluder cannot be recovered, and the deformation of the fixing disc is large, so as to reduce damage and structure. Soft, tension-reducing effect

Active Publication Date: 2017-11-21
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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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 left atrial appendage blocking system, which includes a blocking disk and an anchoring disk. The blocking disk is woven with nickel-titanium alloy wire and is heat-treated to form a disk-shaped structure. The anchoring disk is also made of The nickel-titanium alloy wires are braided and heat-treated to form a columnar structure. The anchoring disk includes at least one thick wire, which is made of a plurality of nickel-titanium alloy wires densely wound. When the anchoring disk is in an appropriate position position, at least one of the nickel-titanium alloy wires protrudes from the anchoring disk in an oblique outward direction, serving as an anchor thorn, pointing toward the blocking disk, and the other nickel-titanium wire also serves as an anchor in the braided mesh. A wire exists to connect the upper and lower steel sleeves. The invention is a left atrial appendage occlusion system that has good effects on blocking the outflow of thrombus in the left atrial appendage, is repositionable, fixed and stable, and is fatigue-resistant.

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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Patent Type & Authority Patents(China)
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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