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Perivalvular leakage plugging device

An occluder and paravalvular technology, applied in the field of medical devices, can solve the problems of inability to completely seal the gap, the occluder is difficult, and the surgical effect is affected, and the effect of preventing postoperative residual shunt and preventing residual shunt can be achieved.

Pending Publication Date: 2018-04-10
SUZHOU INNOMED MEDICAL DEVICE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the occluders used in the treatment of paravalvular leak are all in a regular shape such as a nearly cylindrical shape, while the inherent structure of the paravalvular leak is mostly irregular. Therefore, there are many residual shunts after closure, which affects the surgical effect
[0004] Therefore, a paravalvular leak occluder is urgently needed to solve the problem of residual shunt after the closure operation that exists in the prior art

Method used

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  • Perivalvular leakage plugging device
  • Perivalvular leakage plugging device
  • Perivalvular leakage plugging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 and figure 2 As shown, the paravalvular leakage occluder provided in this embodiment includes a front-end umbrella disk 1, a rear-end umbrella disk 2, and a waist connector 3 connecting the front-end umbrella disk 1 and the rear-end umbrella disk 2. An outer covering film 5 is formed, and the outer covering film 5 is polytetrafluoroethylene. Since polytetrafluoroethylene has a large expansion coefficient, after the occluder provided in this embodiment is released at the position where the paravalvular leak is located, the outer covering membrane 5 can shrink rapidly, and fill irregularly according to the inherent structural shape of the paravalvular leak The gap is more in line with the irregular shape of the paravalvular leak than the traditional occluder, and can effectively prevent postoperative residual shunt.

[0028] Further, the occluder is braided by polymer hydrogel material or nickel-titanium alloy wire coated with polymer hydrogel material...

Embodiment 2

[0034] Such as image 3 As shown, this embodiment provides a paravalvular leak occluder. For the sake of simplicity, only the differences from Embodiment 1 are described in this embodiment. In this embodiment, the connection mode between the waist connecting body 3 and the rear umbrella tray 2 is different from that in Embodiment 1. Specifically, the waist connecting body 3 and the rear umbrella tray 2 adopt a waist design, that is, the waist connecting body The rear end of 3 is integrated in a bundle and then connected to the top of the rear umbrella tray 2, and the weaving density of the connecting bundle 4 between the waist connector 3 and the rear umbrella tray 2 is greater than that of the waist connector 3 and the rear umbrella tray 2 density, so the connection bundle 4 has strong toughness.

[0035] In this embodiment, the longitudinal section of the front-end umbrella plate 1 and the waist connector 3 is T-shaped, and the rear-end umbrella plate 2 is in-line, that is,...

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Abstract

The invention relates to the technical field of medical equipment, and particularly relates to a perivalvular leakage plugging device comprising a front-end parachute tray, a rear-end parachute tray and a waist connector for connecting the front-end parachute tray with the rear-end parachute tray, wherein an outer tectorial membrane is sewn on the waist connector and is made from polytetrafluoroethylene. Because polytetrafluoroethylene has great expansion coefficients, after the plugging device provided by the invention releases at the perivalvular leakage position, the outer tectorial membrane can quickly shrink, and irregular notches can be filled up according to the inherent structure form of perivalvular leakage; compared with conventional plugging devices, the plugging device disclosed by the invention can better conform to the irregular form of perivalvular leakage, and can effectively prevent postoperative residual diffluence.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a paravalvular leakage occluder. Background technique [0002] Paravalvular leak is a gap around the artificial valve after surgical valve replacement or transcatheter valve replacement, which leads to abnormal communication between the ventricular surface and the atrium surface or between the ventricular surface and the great vessel surface on both sides of the valve, resulting in congestive heart failure in patients. Decline, hemolysis and other related clinical manifestations affect the prognosis. Traditional treatment methods require re-thoracotomy, paravalvular leak repair or re-valve replacement under extracorporeal circulation. The operation risk is high and the mortality rate is high. [0003] Interventional occlusion of paravalvular leak is a minimally invasive treatment method based on vascular intervention technology. Through vascular interventional access, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61F2/24
CPCA61B17/0057A61F2/24A61B2017/00862A61B2017/00606A61B2017/00243
Inventor 刘洋杨剑魏继昌唐嘉佑李兰兰金屏金振晓段维勋杨秀玲陈涛俞世强谭金淼
Owner SUZHOU INNOMED MEDICAL DEVICE
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