PS23 生体管内展開構造の耐久性向上設計に関する研究(ポスターセッション)

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  • PS23 Study on Design Optimization for Expansion Structure in Artery

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Carotid angioplasty and stenting (CAS) has emerged as an effective alternative to carotid endarterectomy, and Ti-Ni stents are may be used in CAS. To evaluate biomechanical properties of Ti-Ni carotid stents and their interactions with carotid arteries, we constructed a finite element method (FEM) model composed of a stenotic carotid tissue and a segmented-design Ti-Ni stent. Results show that the super-elastic stents were delivered into tfie stenotic vessel lumen through the sheath and self-expanded in the internal and common carotid artery. The stent with shorter struts may have better clinical results, and the different stent designs can cause different carotid vessel geometry changes. This FEM can provide a convenient way to test and improve biomechanical properties of existing carotid stents and give clues for new Ti-Ni expansion structure of carotid stent designs.

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