Nanometer electro-spinning tectorial membrane etching support and method for curing intracranial aneurysm

Abstract

The invention discloses a nanometer electro-spinning tectorial membrane etching support and method for curing intracranial aneurysm. The nanometer electro-spinning tectorial membrane etching support comprises a support main body of a cylindrical net structure. Four radio-opaque first mark points are arranged at each of two ends of the support main body and are used for accurate release of the support. Two radio-opaque second mark points used for developing positioning of the support in the release process are arranged at the starting point and the stop point of a tectorial membrane in the middle section of the support main body. The nanometer electro-spinning tectorial membrane etching support further comprises a push device. The push device is arranged at one end of the support main body and comprises a lead wire and a conveying pipe. The lead wire is located in the conveying pipe, and the front end of the lead wire is connected with the support main body. According to the nanometer electro-spinning tectorial membrane etching support and method, intracranial aneurysm haemodynamics changes simply by inserting the support, the aneurysmal neck can be directly blocked to promote thrombus forming and organizing in the arterial aneurysm, accordingly the purpose of rebuilding parent arteries anatomically is achieved, and the parent arteries are kept unblocked.

Description

technical field [0001] The invention relates to a medical device, in particular to a nano-electrospinning membrane-etched stent and a method for treating intracranial aneurysms. Background technique [0002] Intracranial aneurysm is an abnormal protrusion of intracranial aneurysm wall. Rupture of intracranial aneurysm is the main cause of spontaneous subarachnoid hemorrhage, the prognosis of patients with spontaneous subarachnoid hemorrhage is poor, the overall mortality rate is 25%, and the disability rate of survivors is close to 50%. [0003] At present, the treatment methods for intracranial aneurysms mainly include craniotomy to clamp the aneurysm neck and endovascular interventional therapy. Craniotomy to clamp the aneurysm neck is difficult and causes great trauma to the patient. Compared with surgery, endovascular interventional treatment is less difficult and causes less trauma to patients. At present, the overall prognosis of endovascular interventional treatment...

AI Technical Summary

Problems solved by technology

Due to the limitation of the stent, the stent-assisted coil technology increases the difficulty of placing the microcatheter in place, and also brings difficulties to the dense packing of the aneurysm. Partition packing

After embolization of aneurysms with balloon-assisted ONYX embolization, the space-occupying effect is usually not alleviated, but will also be aggravated. After embolization of fusiform or wide-necked aneurysms with ONYX, the exposed ONYX area is larger, and the probability of thrombus formation is significantly increased. , Spontaneous parent artery occlusion and distal thromboembolism may occur. ONYX is generally not used for arterial segments with many perforating vessels, because ONYX may still leak sometimes, blocking perforating vessels or distal branches along the way

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