Development of Self-Expandable Stent

Abstract

The design medical device is a mesh-shaped tube made of a memory alloy of nickel and titanium, 1.85〜2.00mm in diameter, 30-60mm long, wire width 0.15mm and wire thickness 0.25mm. It is known as a stent in the field of medical engineering. It has been used for the safe and effective treatment of arterial occlusion. It selfexpand its diameter into the lesion where flow through a blood vessel, ureter or a bile duct is blocked. But, a stent which are available for clinical demands in Japan were not produced. After many of experimental design, trial productions and experimental use by animal over 5 years by the project which are organized by design, medicine, engineering and market, an original product was obtained. It has a good design, abilities and qualities compared with other overseas stent, and it has good evaluation in the field of medical engineering