Intracranial dense net stent and preparation method thereof

Abstract

The invention discloses an intracranial dense mesh stent and a preparation method thereof, and belongs to the technical field of medical instruments, the intracranial dense mesh stent comprises a dense mesh stent body formed by weaving a plurality of nickel-titanium alloy wires in a crossed mode, the surface of the dense mesh stent body is smooth, the dense mesh stent body is provided with diamond-shaped mesh holes, a plurality of fixing strips are arranged in the dense mesh stent body in a crossed mode, and the fixing strips are arranged in the dense mesh stent body. The diameter of the dense net stent after expansion is 4-7 mm, and the upper end and the lower end of the dense net stent are each wound with a layer of expandable protective ring. According to the intracranial dense net stent and the preparation method thereof, the artery blocking effect is effectively improved, aneurysm is gradually reduced, and then the healing purpose is achieved; the protection rings at the upper end and the lower end of the dense net stent prevent the ends of the nickel-titanium alloy wires from damaging the artery, and meanwhile the situation that after the dense net stent is expanded, the ends of the nickel-titanium alloy wires move, and consequently the dense net stent deforms is avoided.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an intracranial dense mesh support and a preparation method thereof. Background technique [0002] Dense mesh stent, also known as blood flow guide stent, is a new type of interventional embolization material. Usually an aneurysm is a sac-like protrusion formed by the blood vessel wall, a blood flow directing stent or a dense mesh stent, which is a stent released across the aneurysm within the blood vessel. Because the mesh of this stent is very small, it will isolate the blood in the blood vessel from entering the aneurysm sac, so as to reduce the rupture and bleeding of the aneurysm, and even the possibility of the aneurysm being cured. The guide wire of the dense mesh stent is very thin, thinner than a human hair. Its main mechanism of action is hemodynamics, not a complete tamponade mechanism, which is different from previous coil embolization. [0003] The Chine...

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Problems solved by technology

[0004] When the above patents are used, there are many shortcomings. First, when the above patents are used, the dense mesh stent enters the inside of the artery to support the arterial disease , but the artery will squeeze the dense mesh stent, and the two ends of the dense mesh stent will expand and disperse, which will cause damage to the artery; Retraction; thirdly, the preparation of dense-mesh stents is too complicated. After preparation, it is difficult to remove the dense-mesh stents. If manual removal is used, the dense-mesh stents will be exposed to a large number of bacteria and pollutants

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