PROBLEM TO BE SOLVED: To provide a degradation speed-adjustable biodegradable stent.SOLUTION: There is provided a biodegradable polymer stent made from poly (L-lactide) and 0.05 to 0.5 wt.% of a low condensation L-lactide monomer. There is provided the biodegradable polymer sheet for maintaining patency of blood vessels and treating affected parts where the concentration of L-lactide is adjusted so that a degradation behavior suitable for treatment applications including applications to coronary artery, peripheral vessels and nose vessels. There is provided the biodegradable polymer stent having a crystallinity degree of the poly (L-lactide) of 20 to 50% and a number average molecular weight of 60,000 to 300,000.COPYRIGHT: (C)2015,JPO&INPIT【課題】分解速度が調節可能な生分解性ステントの提供。【解決手段】ポリ（Ｌ－ラクチド）と０．０５～０．５ｗｔ％の低濃度のＬ－ラクチドモノマーとで作られる生分解性ポリマーステント。Ｌ－ラクチドの濃度は、冠動脈、末梢血管および鼻血管への適用を含む治療用途に適する分解挙動が得られるように調製される血管の開存性を維持し患部を治療するための生分解性ポリマーステント。前記ポリ（Ｌ－ラクチド）の結晶化度が２０～５０％であり、数平均分子量が６０，０００～３００，０００である生分解性ポリマーステント。【選択図】図２
