2E1-5 ポリ乳酸製ステントの微細加工法の評価(OS3-1:医療福祉ロボットとマイクロマシン技術I,オーガナイズドセッション)

概要

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The biodegradable stent made from poly lactic acid film has been developed and its micromachining method has been also evaluated. The machinig accuracy was high in the order of oxygen RIE, the UV laser, and the cutting plotter. However, it was seen that the tensile strength depended on the machining method and decreased. Then, the tensile strength of the film after machining was evaluated. The tensile strengths were the maximum average value of 127.2MPa by the cutting plotter, and the minimum average value of 89.4MPa by the excimer laser. The machining surfaces were observed by SEM. They showed that the machining surfaces by the excimer laser and oxygen RIE were rough. It is expected that it causes the tensile strength decreased.
2009-09-23