Nanometer electrospinning fiber stent for intravascular interventional therapy of intracranial aneurysm

A technology for intracranial aneurysm and interventional treatment, applied in the field of medical devices, can solve the problems of high requirements for in-place blood vessels, poor compliance, and use restrictions, and achieve the effect of reducing difficulty, reducing difficulty and cost, and reducing risk

Inactive Publication Date: 2015-01-14
SHENZHEN PEOPLES HOSPITAL +2
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Problems solved by technology

The stent-grafts currently used in intracranial applications have high hardness, poor compliance, and high requirements f...

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  • Nanometer electrospinning fiber stent for intravascular interventional therapy of intracranial aneurysm
  • Nanometer electrospinning fiber stent for intravascular interventional therapy of intracranial aneurysm
  • Nanometer electrospinning fiber stent for intravascular interventional therapy of intracranial aneurysm

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Embodiment Construction

[0024] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Cerebral hemangioma is a general term for cavernous hemangioma, hemangioblastoma, capillary hemangioma and cerebral aneurysm that occur in the brain. Cerebral hemangiomas are located in the deep part of the brain, which is the large branch of the arterial ring at the base of the brain. The turbulent blood flow impacts the bifurcations, causing the wall of the blood vessels to gradually destroy, thus forming hemangiomas. Cerebral hemangioma is also called cavernous hemangioma, hemangioblastoma, capillary hemangioma, etc. Cerebral hemangioma is a benign tumor originating from the embryonic remnant tissue of mesoderm cells. It mostly occurs in the cerebellum, and occasionally in the brainstem and spinal cord. .

[0026] Please refer to the attached Figure 1~3 , a nano-electrospun fiber stent for intravascular interven...

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Abstract

The invention relates to a medical apparatus, in particular to a nanometer electrospinning fiber stent for intravascular interventional therapy of intracranial aneurysm. The fiber stent comprises a stent body and a pushing device, wherein the stent body is of a cylindrical net-shaped structure which is formed by weaving a nickel-titanium alloy wire, and the two ends of the stent body are respectively provided with four X-ray-opaque marking points, so as to ensure the accurate release of the stent; the surface of the middle section of the stent body is attached with a large amount of nanometer electrospinning fibers, and the starting point and the finish point of the middle section attached with the nanometer electrospinning fibers are respectively provided with two X-ray-opaque marking points, so as to assist the development positioning in the stent release process, and ensure that the middle section can completely cover an aneurysm neck in the stent releasing process. The fiber stent has the advantages that the dynamics of blood in the intracranial aneurysm can be changed, the formation and organization of thrombus in the aneurysm, and the regeneration of skin cells in blood vessels of the aneurysm neck are promoted, and the purpose of reconstructing an aneurysm-carrying artery is realized; meanwhile, the smoothness of the aneurysm-carrying artery and branch arteries is maintained.

Description

technical field [0001] The invention relates to a medical device, in particular to a nano electrospun fiber support for intravascular interventional treatment of intracranial aneurysm. 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 therapy is less difficult and causes less trauma to patients. At present, coil embolization of aneurysms is the most commonly used...

Claims

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Application Information

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IPC IPC(8): A61F2/07
Inventor 陈旭东曾延华李鑫何凡
Owner SHENZHEN PEOPLES HOSPITAL
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