Internal carotid artery integrated release umbrella protection stent

Abstract

The invention discloses an umbrella-shaped protective stent for internal carotid artery integrated release, which includes a guide wire, a protective umbrella sleeve, a protective umbrella, an elastic ring, a drawstring, a fixing block, a stent clamping tube, a placement groove, an elastic stent, and a stent sleeve. The internal artery integrated release umbrella-shaped protective stent has ingenious structure and powerful functions. Through the integrated design of umbrella-shaped storage and stent release, it can effectively avoid the problem that after the traditional stent is released, it is necessary to exit the stent release mechanism first and then go deep into the umbrella recovery mechanism. , which avoids repeated operations twice, and also prevents the risk that the umbrella recovery catheter cannot pass through the release stent, greatly improves the safety of the operation, saves operation time, and finally achieves a good clinical application purpose.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an integrated release umbrella-shaped protective stent for the internal carotid artery. Background technique [0002] Carotid angioplasty and stenting (CAS) is a minimally invasive procedure used to treat carotid artery stenosis. The use of CAS has increased steadily since the method was introduced 20 years ago, and was used in 8% of the 107,000 carotid artery procedures performed in Europe in 2001. Without the discomfort of a sizable neck incision, the prospect of an outpatient procedure led patients to decide against carotid endarterectomy, which has been used for the past fifty years to treat carotid branching. State-of-the-art surgery for fork disease. [0003] According to the above, the current clinical traditional internal carotid artery elastic stent release mechanism and the umbrella recovery mechanism are two independent systems. After the stent is released, t...

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Problems solved by technology

[0003] According to the above, the current clinical traditional internal carotid artery elastic stent release mechanism and the umbrella recovery mechanism are two independent systems. After the stent is released, the stent release system needs to be exited first, and then the umbrella recovery catheter is used to recover the umbrella, so a second operation is required. The operation is complicated, and it is easy to cause the thrombus in the protective umbrella to escape. At the same time, the stent release system needs to pass through the released stent in the process of re-installing the protective umbrella to recover the catheter. If the blood vessel is tortuous or the pre-amplification of the stent is not good, The umbrella recovery catheter often encounters great resistance and cannot reach the position of the umbrella through the stent, resulting in failure to recover the umbrella, causing serious complications such as vascular occlusion, and ultimately bringing great hidden dangers to clinical promotion and application. In view of the above defects, It is necessary to design an integrated release umbrella-shaped protective stent for the internal carotid artery

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