Treatment of distal internal carotid artery aneurysm with the willis covered stent: a prospective pilot study.

Purpose: To evaluate the flexibility and efficacy of the Willis covered stent in the treatment of distal internal carotid artery (DICA) aneurysms.

Materials And Methods: The study was approved by the authors' institutional review board, and the research was conducted by the authors' institution and the MicroPort Medical Company (Shanghai, China). Thirty-one patients with 33 DICA aneurysms were considered for treatment with a Willis covered stent.

[Finite element analysis and fatigue tests for nitinol vascular stents].

This essay is to make brief comments on the Nitinol vascular stents fatigue lifetime requirements, finite element analysis and fatigue lifetime tests etc.

[Nitinol alloy's applications in cerebral interventional devices].

With the development of cerebral interventional medical devices, Nitinol alloy has been widely used in clinical fields as a good biomaterial. This essay is to make brief comments on Nitinol alloy's present development, its material characteristics, medical basic researches, and applications in cerebral interventional devices.