Aperture-variable double-layer balloon atrial septum blood flow regulator and use method thereof

Abstract

The invention discloses a variable-aperture double-layer balloon atrial septum blood flow regulator and a using method thereof, and belongs to the field of medical instruments, the regulator comprises a disc I, a disc II, a waist support and a covering film, the disc I and the disc II are welded to the two ends of the waist support respectively, and the covering film is attached to the periphery of the waist support; the Z-shaped platinum-iridium alloy wire is adopted to form the waist support, the self-expansion nickel-titanium alloy wire is adopted to weave the disc, and the aperture size of the atrial septum stoma is adjusted through air pressure control of the waist double-layer balloon; the double-layer balloon is expanded step by step, so that the safety is higher, the alloy wire material is good in flexibility and memory performance, and interval stoma adjustment can be effectively realized; the device is simple in overall structure, not prone to damage, capable of being flexibly controlled according to the interval stoma requirement, capable of effectively preventing the postoperative spontaneous closing phenomenon, long in service life, safe, effective, economical and applicable.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a variable-aperture double-layer balloon atrial septal blood flow regulator and a using method thereof, which are applied to cardiovascular intervention of pulmonary hypertension. Background technique [0002] Transcatheter atrial septostomy is currently the main clinical intervention for severe PAH in addition to targeted drugs. The common point of the atrial septal shunt devices developed so far is that they are woven with metal wires as the skeleton. They use the superelasticity and memory of Nitinol alloy. They only have different shapes in design. They are specially used to create a certain fenestration and allow blood to flow through the room. Septal, according to the thickness of the atrial septum, such devices can be divided into different waist lengths. It has the advantages of simple operation and stable implantation position, but the aperture size of the atr...

AI Technical Summary

Problems solved by technology

[0006] In view of the problems that the atrial septal shunt in the prior art cannot accurately control the size of the atrial septostomy, the spontaneous closure rate is high, the risk of repeated operation is high, and the economic applicability is poor, the present invention provides a variable-aperture double-layer balloon room Interval blood flow regulator and its use method, using "Z"-shaped platinum-iridium alloy wire to form a waist support, using a self-expanding nickel-titanium alloy wire braided disc, and controlling the air pressure of the waist double-layer balloon to realize the size of the atrial septostomy Adjustable, and the alloy wire material has good flexibility, simple structure, and is not easy to damage. It can be flexibly controlled according to the needs of the septal stoma, effectively preventing postoperative spontaneous closure, long service life, safe and effective, economical and applicable

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