PROBLEM TO BE SOLVED: To selectively puncture a pericardium and to surely make a tip part of a needle penetrate through the pericardium to be inserted in pericardium inside cavity.SOLUTION: An access device 1 includes: a cylindrical sheath member 2 inserted in a body with the tip disposed in the vicinity of a pericardium a pulling member 3 having a grip part 32 for gripping the pericardium at the tip, which is provided so as to move in the longitudinal direction of the sheath member 2 in the interior of the sheath member 2 and a puncture member 4 having an acute pointed end 42 disposed side by side in the radial direction of the sheath member 2 to the gripping part 32 at the tip, which is provided so as to move in the longitudinal direction of the sheath member 2 in the interior of the sheath member 2.COPYRIGHT: (C)2014,JPO&INPIT【課題】心膜を選択的に穿刺するとともに針の先端部を確実に心膜に貫通させて心膜腔内に挿入する。【解決手段】体内に挿入されて先端が心膜の近傍に配置される筒状のシース部材2と、心膜を把持する把持部32を先端に有し、シース部材2の内部において該シース部材2の長手方向に移動可能に設けられた引っ張り部材3と、把持部32に対してシース部材2の径方向に並んで配置される尖鋭な尖端部42を先端に有し、シース部材2の内部において該シース部材2の長手方向に移動可能に設けられた穿刺部材4とを備えるアクセスデバイス1を提供する。【選択図】図1
