PROBLEM TO BE SOLVED: To provide a medical device capable of preventing slip of a tip part, accurately and safely performing puncture and preventing damages of a punctured part due to excessive insertion.SOLUTION: On the outer surface of a core shaft 3 and a sheath body 5 at the tip part 10 of the medical device 1, a first friction resistance part 21 is provided. On the outer surface of the sheath body 5 separated from the tip part 10 in a proximal end direction, a second friction resistance part 22 is provided. Friction resistance to the puncture part of a mitral valve at the first friction resistance part 21 and the second friction resistance part 22 is made higher than the friction resistance to the punctured part at parts other than the first friction resistance part 21 and parts other than the second friction resistance part 22.COPYRIGHT: (C)2013,JPO&INPIT【課題】最先端部の滑りを防止して正確かつ安全に穿孔でき、なおかつ、過剰挿入による穿孔部位の損傷を防止できる医療用デバイスを提供する。【解決手段】医療用デバイス1の最先端部10におけるコアシャフト3及びシース体5の外表面に、第1摩擦抵抗部21を設け、該最先端部10から基端方向に離間した前記シース体5の外表面に、第2摩擦抵抗部22を設け、該第1摩擦抵抗部21、及び第2摩擦抵抗部22における僧帽弁の穿孔部位に対する摩擦抵抗を、該第1摩擦抵抗部21以外の部位、及び該第2摩擦抵抗部22以外の部位における該穿孔部位に対する摩擦抵抗より高いものとした。【選択図】図1
