Special auxiliary stent for aneurysm liquid suppository

Abstract

The invention belongs to the field of a medical care article, and particularly relates to a special auxiliary stent for an aneurysm liquid suppository. The special auxiliary stent comprises a stent body, a coating film and an opening, wherein the stent body is of a cylindrical tubular structure with openings at two ends; meshes are formed in the side wall of the cylindrical tubular structure; the coating film coats the side wall of the stent body; and the opening is formed in the coating film, and is used for passing a catheter used for injecting the liquid suppository. The special auxiliary stent for the aneurysm liquid suppository provided by the invention can well prevent the occurrence of reflux error thrombosis and superfluid error thrombosis; the normal blood of the human body cannot be blocked since a sealed saccule does not need to be used; and side effects caused by human tissue ischemia are avoided.

Description

technical field [0001] The invention belongs to the field of medical supplies, in particular to a special auxiliary bracket for aneurysm liquid embolism. Background technique [0002] Aneurysm is a manifestation of localized or diffuse expansion or bulging of the arterial wall due to lesion or injury of the arterial wall. Arteries, aorta, and carotid arteries are more common. Intracranial aneurysm refers to a tumor-like protrusion of the arterial wall caused by the localized abnormal expansion of the cerebral artery lumen. Intracranial aneurysms are mostly caused by local congenital defects of the cerebral artery wall and increased intracavitary pressure. Sexual bulge is the first cause of subarachnoid hemorrhage. [0003] Currently, there are two types of treatment for intracranial aneurysms, surgical and non-surgical. Among them, surgical treatment includes craniotomy and interventional endovascular treatment. Interventional vascular embolization, also known as superse...

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Problems solved by technology

Among them, the liquid materials include anhydrous ethanol, 14-alkyl sodium sulfate, estrogen, hypertonic glucose, sodium fish glycerate, etc., which are mainly vascular sclerotic agents, which can destroy vascular endothelial cells and form wall-attached thrombus. In the treatment of vascular malformations or tumors with very fast flow, the injected liquid material is prone to superfluid embolism, which makes the embolic agent enter the pulmonary circulation; while in tumors with slow blood flow, or in the late stage of embolic agent injection, the injection pressure and speed must be controlled. Improper, and prone to reflux misembolization, embolic agents enter the internal carotid artery

At present, the common practice is to place a closed balloon or an open-designed stent on the blood vessel site with the hemangioma after injecting the liquid embolic agent into the hemangioma; however, since the closed balloon or open-designed stent is Placed after injection of liquid embolic agents, therefore closed balloon and open design stents have absolutely no effect on superfluid and reflux misembolization during surgery, nor after surgery It can effectively reduce superfluid embolism and reflux embolism, and the closed balloon will also block the blood flow at the surgical vessel for a long time, which may cause severe ischemia side effects

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