Device for treating patent ductus arteriosus severe pulmonary hypertension, and use method of device

Abstract

The invention relates to a device for treating patent ductus arteriosus severe pulmonary hypertension, and a use method of the device. The device comprises a valve stent and a conveying system. A conduit stent comprises an intravascular stent, two-end fixing stents and a one-way film, wherein the intravascular stent is of a circular pipe shape, the side wall of the intravascular stent is providedwith a mesh weaved by memory metal, and an inner wall is attached with a plastic film; the two-end fixing stents are welded to two ends of the intravascular stent; the tip end part of each two-end fixing stent is independently attached with a development cladding layer; the one-way film is a funnel-shaped biological valve and is fixed in the intravascular stent; the conveying system comprises a sheathing canal, a conduit and a pushing rod, wherein the sheathing canal is a plastic pipe, and two ends of the sheathing canal are independently provided with a development ring; a tail end is connected with the conduit; the conduit is a vascular intervention conduit, and a head end is connected with the sheathing canal; a pushing rod is subjected to vascular intervention of a guide wire, and a head end is provided with a pushing block; and the pushing block is a cylindrical plastic block. In the device, the conveying system is used for sending the intravascular stent to an arterial duct through a vascular access to be released, the conduit stent is unfolded and fixed in the arterial duct, and the one-way film is built in for preventing blood from flowing to the pulmonary artery from the aorta.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a device for treating severe pulmonary hypertension in patent ductus arteriosus and a method for using the device. Background technique [0002] Pulmonary hypertension refers to a hemodynamic and pathophysiological state in which pulmonary artery pressure rises above a certain threshold, which can lead to right heart failure. It can be an independent disease, a complication, or a syndrome. The diagnostic criteria of hemodynamics are: the average pulmonary artery pressure detected by right heart catheterization is ≥25mmHg at resting state at sea level. Pulmonary hypertension is a common and frequently-occurring disease with high morbidity and mortality, which should be paid more attention to. [0003] Patent ductus arteriosus is also the cause of pulmonary hypertension. The ductus arteriosus was originally a normal blood flow channel between the pulmonary artery and the aorta durin...

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Problems solved by technology

[0004] The current method of dealing with pulmonary hypertension caused by patent ductus arteriosus is thoracotomy to close the ductus arteriosus. This method requires anesthesia for thoracotomy, long operation time, high risk, large wound area, and long postoperative recovery time At the same time, if the ductus arteriosus is completely blocked in patients with congenital heart disease, pulmonary hypertension still exists, and the problem of high pressure cannot be solved

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