公开(公告)号：EP3777741A1

公开(公告)日：2021-02-17

申请号：EP19776229.7

申请日：2019-03-26

申请人： TERUMO Kabushiki Kaisha

发明人： TAKAHASHI, Yusuke ,  KATO, Yukitoshi ,  TAKEMURA, Tomoaki ,  YAMAZAKI, Nozomu

IPC分类号： A61B18/14 ,  A61B17/00 ,  A61B18/18 ,  A61B18/20

摘要： Provided is a medical device which can suppress torsion of a wire in a circumferential direction in an expansion body formed using the wire.
Amedical device (10) includes an elongated shaft portion (20), and an expansion body (21) disposed in a distal portion of the shaft portion (20) , and configured to expand and contract in a radial direction. The expansion body (21) has wire portions (50) in which a distal portion and a proximal portion are linked with the shaft portion (20), and a holding portion (51) formed using at least one of the wire portions (50), and holding a biological tissue. At least one of a proximal side and a distal side of the holding portion (51) has an opening portion (57) formed using the wire portion (50) or formed using a plurality of the wire portions (50). When the expansion body (21) expands, the wire portion (50) forming the holding portion (51) faces the opening portion (57).