Cerebral aneurysm endovascular plastic repair bracket and conveying device thereof

Abstract

The invention discloses a cerebral aneurysm endovascular plastic repair bracket and a conveying device thereof, and solves a technical problem of treating small blood vessels and particularly cerebral aneurysm in a human body. The repair bracket is a netlike cylinder which is wove by elastic alloy wires with diameter of 30-50mum followed by heat treatment to form an elasticated net taking a cylinder shape in a free state, two end portions of the netlike cylinder is sparsely wove and a middle portion is closely wove to form a compact section. In the conveying device, a microcatheter is internally provided with a bracket folded in a straight line shape, a guide wire passes through the bracket, two ends of the bracket is connected with the guide wire by a pushing ring, and the bracket is the netlike cylinder. Compared with the prior art, the bracket composed of short diameter and soft alloy wires benefits isolating cerebral arteries bearing an aneurysm from a cerebral aneurysm neck, reducing thrombosis caused by impact of blood in the arteries bearing the aneurysm on the cerebral aneurysm body and separating the cerebral aneurysm body from the arteries bearing the aneurysm, thus the bracket is applicable to treatment of fusiform cerebral aneurysm.

Description

technical field [0001] The invention relates to a medical device, in particular to a stent for interventional treatment of cerebral aneurysms and a delivery device thereof. Background technique [0002] Cerebral aneurysm is a disease that seriously threatens people's life and quality of life. It has the characteristics of high incidence, high disability rate, high mortality rate and high recurrence rate. It is the main disease that causes death and disability in middle-aged people. The American Society of Interventional and Therapeutic Neuroradiology estimates that 1 in every 15 Americans will have a cerebral aneurysm, which shows that the incidence of cerebral aneurysm is very high. Among those with intracerebral aneurysms, 0.2-0.3% experience a ruptured hemorrhagic stroke each year that is life-threatening. In the United States, more than 30,000 people suffer from ruptured cerebral arteries each year. According to the data of our country, in the general population, the i...

AI Technical Summary

Problems solved by technology

However, the stents of the prior art are difficult to deliver to the common and multiple cerebral aneurysm above the intracranial cavernous segment of the internal carotid artery, and cannot isolate the blood flow and hemodynamic conditions of the neck of the cerebral aneurysm, so they cannot be used Routinely used repair methods for cerebral aneurysms

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