Intracranial aneurysm neck reconstruction device

Abstract

The invention relates to an intracranial aneurysm neck reconstruction device. The intracranial aneurysm neck reconstruction device comprises a reconstruction device body, a guide wire and an outer sheath tube, wherein the reconstruction device body gradually and outwards expands from the near end to the far end; the far end of the reconstruction device body is provided with a head end developing block; the middle end of the reconstruction device body is provided with a middle end developing block; the near end of the reconstruction device body is folded downwards and is fixedly arranged on the guide wire; the guide wire is positioned in the outer sheath tube; a disconnecting point is arranged at the connected position of the guide wire and the reconstruction device body; the other end of the guide wire is connected with a disconnector. The intracranial aneurysm neck reconstruction device disclosed by the invention has the advantages that by implanting the reconstruction device body, the flowing speed of blood in an intracranial aneurysm is slowed down, the hemodynamics in the intracranial aneurysm is changed, and thus the impact from local blood flowing to an aneurismal wall can be reduced; meanwhile, through the implantation of a parent artery reconstruction device body, a local parent artery can be strengthened and repaired, and the physiological structure of a normal part of the parent artery is enabled to recover.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an intracranial aneurysm neck reconstruction device. Background technique [0002] Intracranial aneurysm is a cerebral hemangioma-like protrusion due to abnormal changes in local blood vessels. It is a cerebrovascular disease with high morbidity and mortality. It is the main cause of subarachnoid hemorrhage. Ruptured intracranial The mortality rate of aneurysm is as high as 51%, and the disability rate of survivors is close to 50%. Surgical clipping and endovascular intervention are the two main modalities for the treatment of intracranial aneurysms. With the rapid development of interventional devices, interventional treatment of intracranial aneurysms has become the first choice for clinical treatment in many hospitals due to its advantages of minimal invasiveness, safety and effectiveness. [0003] The principle of interventional therapy is to change local hemodynami...

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Problems solved by technology

[0006] The covered stent graft is suitable for the treatment of huge, wide-necked or fusiform intracranial aneurysms, but it is difficult to send the parent artery to the intracranial target for some bifurcation parent arteries or parent tumor arteries whose opening is close to the bifurcation

[0007] Vascular reconstruction devices are currently one of the hotspots in the research and development of intracranial aneurysm devices. In aneurysms, the formation site of the aneurysm neck is the site where the structural defects of the parent artery and local hemodynamic conflicts are most concentrated. Therefore, dense packing of the aneurysm neck Restoring the integrity of the local parent artery is the premise and basis for repairing the parent artery and treating the aneurysm. However, in the prior art, coils are usually used for dense packing of the aneurysm neck, and the coil embolization is very dense, which may easily lead to rupture of the aneurysm. ; In addition, the aneurysm is the result of the disease of the parent artery, and repairing the parent artery can help reduce the recurrence of the aneurysm

[0008] In summary, there is an urgent need for a method that promotes thrombus formation, densely fills the aneurysm neck, slows down the flow velocity of blood in the aneurysm, changes the hemodynamics in the aneurysm, and reduces the impact of local blood flow on the aneurysm wall. An aneurysm neck reconstruction device that plasticizes the aneurysm artery, strengthens and repairs the local aneurysm artery, and there is no report about this aneurysm neck reconstruction device

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