Drug stent

Abstract

The invention relates to the technical field of drug stents, in particular to a drug stent. The drug stent has an unfolded state and a contracted state, and the inner diameter of the drug stent in the unfolded state is larger than the inner diameter of the drug stent in the contracted state; and the drug stent comprises stent bodies which are of an open-loop structure, wherein a plurality of stent main bodies are arranged along the axial direction of the drug stent and are connected through metal wires, the stent main bodies comprise the plurality of annular stent bodies which are coaxially arranged, and connecting bodies for connecting two adjacent stent bodies, a plurality of grooves are formed in the side, making contact with the blood vessel wall, of the stent bodies in the circumferential direction of the stent bodies, and the grooves are filled with at least one medicine. The stent main bodies with a plurality of open-loop structures are adopted, so that a blood vessel wall can be effectively supported, restenosis of blood vessels in the stent is reduced, and the purpose of protecting intracranial blood vessels is achieved; and at least one medicine is adopted, lesions in blood vessels can be effectively treated according to different purposes, and the risk of intracranial aneurysm rupture can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of drug stents, in particular to a drug stent. Background technique [0002] Unruptured intracranial aneurysms are called "time bombs" buried in the brain. Rupture will cause cerebral hemorrhage, which can lead to immediate death in 30% to 40% of patients. Among the surviving patients, after treatment, some of them will still remain severely disabled, and some of them will not be fully competent for their original work and normal life even though they have recovered well. [0003] With the continuous improvement of surgical methods and the emergence of new materials and technologies, some difficult intracranial aneurysms can be treated better. There are two treatment methods, craniotomy to clamp aneurysms and interventional therapy, namely endovascular embolization technology. However, craniotomy is risky, and endovascular embolization technique will bring postoperative complications. [0004] It has been...

AI Technical Summary

Problems solved by technology

However, craniotomy is risky, and endovascular embolization technique will bring postoperative complications

[0004] It has been reported that drug stents can be used to treat intracranial aneurysms, and the effect is better, but the current drug stents are likely to cause restenosis of blood vessels in the stent, and there is no research on drug stents for the treatment of unruptured intracranial aneurysms.

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