Internally bare bracket of vascellum

Abstract

An endovascular bare stent belongs to the technical field of biomedical engineering. The stent is a tubelike mesh-screen stent 1 which is arranged in the blood vessels along the vessel wall. The invention is characterized in that the cross-section of the mesh-screen of the mesh stent 1 takes the shape of a trapezium. The long edge of the trapezium is the outer side 3 of the mesh-screen stent. The short edge of the trapezium is the inner side 2 of the mesh-screen stent. The ratio of short side of the trapezium to long side of the trapezium is less than 50 percent. The penetrating ratio of the mesh-screen of the mesh-screen stent 1 is 40 percent to 80 percent. After the stent covers the aneurysm, the resistance of the blood flowing into the tumor cavity is large, and the resistance of the blood flowing out of the tumor cavity is small; therefore, the blood flowing in the tumor cavity is inhibited so as to reach the purpose of treatment. The stent has little effect on perforating branches vessel, can easily be sent to tortuous intracranial artery, thereby causing the nerves involved in the treatment of cerebral aneurysms more extensive, saving more patients, and being good Gospel for doctors and patients.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering and relates to an intravascular stent for interventional treatment. Background technique [0002] In medicine, in addition to surgical clipping, interventional therapy is more commonly used in the treatment of aneurysms. Compared with traditional surgical treatment, intravascular stent treatment has very obvious advantages, that is, mild trauma, low mortality, short operation period, and low cost, so it has received more and more attention in clinical medicine. It has only been more than ten years since Parodi first used stents for clinical aneurysm treatment in 1991. This technology is still in the initial stage of development, and there are still many problems in the treatment that need to be further studied. In particular, a series of complicated factors must be considered in the treatment of intracranial aneurysms. [0003] Stent grafts are most suitable for embolization of an...

AI Technical Summary

Problems solved by technology

However, Neuroform stents also have the possibility of causing compression or occlusion of the perforating vessels near the aneurysm, and there are still some difficulties in positioning and releasing tortuous intracranial arteries such as the anterior cerebral artery.

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