Patent foramen ovale plugging device with adjustable disc surfaces

Abstract

The invention relates to a patent foramen ovale plugging device with adjustable disc surfaces, and belongs to the technical field of medical instruments. The plugging device of a net-shaped structurecomprises an upper disc surface, a waist part, a lower disc surface, an adjusting rod and an adjusting wire, wherein the waist part is arranged between the upper disc surface and the lower disc surface; the upper disc surface is provided with a middle section with the same central axis and an edge section having an adjustable cross section and perpendicular to the central axis; the upper disc surface of the plugging device is designed by splicing the middle section and the edge section; the adjusting wire is arranged between the edge section and the adjusting rod; and the size of the upper disc surface can be freely adjusted through rotation of the adjusting rod and length change of the adjusting wire. According to the plugging device with the adjustable disc surfaces, the probability of replacing the plugging device is reduced during surgical operation; the fitting degree of the plugging device is improved; and the upper disc surface of the plugging device adopts the two-section design of the middle section and the edge section, and the edge section is softer than the middle section, so that the disc surface size adjustment of the plugging device is facilitated, and the abrasion of tissue attached to the plugging device is reduced.

Description

technical field [0001] The invention relates to a patent foramen ovale occluder with an adjustable disk surface, which belongs to the technical field of medical instruments. Background technique [0002] The foramen ovale is an open area in the middle of the atrial septum, which is a physiological channel for the atrial septum of the embryonic heart. In 20-25% of the population, the fusion of the foramen ovale valve and the atrial septum is incomplete. Studies have shown that the probability of unexplained cerebral ischemic events in patients with patent foramen ovale is significantly higher than that in patients without patent foramen ovale. Many clinical observations have proved that closure of patent foramen ovale (PFO) can reduce cerebrovascular events. [0003] At present, the main means of treating patent foramen ovale is to implant a patent foramen ovale occluder through minimally invasive surgery. However, the thickness of the septum at the fossa ovalis is lower t...

AI Technical Summary

Problems solved by technology

However, because the thickness of the septum at the fossa ovalis is lower than that of the surrounding interatrial septum, and the shape of the fossa ovalis is irregular

The size of traditional patent foramen ovale occluder is fixed. If the size does not match, the occluder needs to be replaced and re-implanted, prolonging the operation time

Traditional metal patent foramen ovale occluder discs are large in size, and if the patient’s defect is located close to the valve or vessel wall, it is easy to cause tissue wear and extrusion

And because the thickness of the atrial septum is greater than the thickness of the fossa ovale, the edge of the occluder disk is easy to warp, and poor tissue fit affects endothelialization

Images