公开(公告)号：EP3505110A1

公开(公告)日：2019-07-03

申请号：EP17843497.3

申请日：2017-08-18

申请人： Terumo Kabushiki Kaisha

发明人： KITAOKA, Takashi ,  IMAI, Masaomi ,  MASUBUCHI, Yuki ,  CHIDA, Takahiro ,  KANAMOTO, Kazuaki ,  FUJIMAGARI, Hideki

IPC分类号： A61B17/3207

摘要： There are provided a medical device and a treatment method capable of breaking an object in a body lumen efficiently with a lower burden on body lumen tissues.
A medical device (10) that is inserted into the body lumen so as to crush an object in the body lumen, the medical device including: an elongated shaft (20) that is to be rotatably driven; and a deformable breaking member (60) that is connected to the shaft (20) so as to be rotatable and extends along the shaft (20). The breaking member (60) has a first contact portion (62) and a second contact portion (63) . The first contact portion (62) is located most outward in the radial direction of the breaking member (60) in a state in which the breaking member (60) is expanded radially outward. The second contact portion (63) is located more outward in the radial direction of the breaking member (60) than the first contact portion (62) in a contracted state rather than an expanded state.

公开(公告)号：EP3505091A1

公开(公告)日：2019-07-03

申请号：EP17846287.5

申请日：2017-08-24

申请人： Terumo Kabushiki Kaisha

发明人： IMAI, Masaomi ,  CHIDA, Takahiro ,  MASUBUCHI, Yuki ,  KITAOKA, Takashi ,  KANAMOTO, Kazuaki

IPC分类号： A61B17/22 ,  A61F2/01

摘要： Provided is a medical device and procedure method for effectively removing an object flowing in a biological lumen while reducing the burden on the living body.
A medical device (1) to be inserted into a blood vessel for collecting a thrombus (300) in the blood vessel includes an elongated shaft portion (24) ; and an expansion portion (20) which is an elastically deformable cylindrical body having a plurality of gaps (21A) and in which a proximal portion or a distal portion of the cylindrical body is interlocked with the shaft portion (24), in which the expansion portion (20) has a ring-shaped bent portion (25) which protrudes toward a proximal side position radially outside the expansion portion (20) in a bent state of being bent along an axial direction, and an axial length of a second portion (26) from the bent portion (25) to a proximal end of the expansion portion (20) is shorter than an axial length of a first portion (22) from the bent portion (25) to the distal end of the expansion portion (20).

公开(公告)号：EP3427678A1

公开(公告)日：2019-01-16

申请号：EP17763249.4

申请日：2017-03-07

申请人： Terumo Kabushiki Kaisha

发明人： MASUBUCHI, Yuki ,  IMAI, Masaomi ,  KITAOKA, Takashi ,  CHIDA, Takahiro ,  KANAMOTO, Kazuaki ,  KATO, Yukitoshi

IPC分类号： A61B17/3207

摘要： There are provided a medical device and a treatment method by which it is possible to appropriately maintain a range in which it is possible to crush an object formed in a body lumen. A medical device (10) for crushing an object in a body lumen by being inserted into the corresponding body lumen, the medical device including: an elongated shaft portion (20) that is to be rotatably driven; a crushing unit (60) that is provided with bendable wire rods and is rotatable together with the shaft portion (20); and a sliding unit (50) that is fixed to each of end portions of the wire rods on at least one of a distal side of and a proximal side of the wire rods and is interlocked with the shaft portion (20) so as to be slidable in an axial direction of the shaft portion (20). The shaft portion (20) is provided with contact portions (42) that are to come into contact with the sliding unit (50) during rotation and are to limit relative rotation of the shaft portion (20) and the sliding unit (50). After the sliding unit (50) is attached to the contact portions (42), the sliding unit (50) rotates in the same direction as the shaft portion (20) along with the rotation of the shaft portion (20) .