MEDICAL DEVICE AND TREATMENT METHOD
    4.
    发明申请

    公开(公告)号:US20190216503A1

    公开(公告)日:2019-07-18

    申请号:US16364981

    申请日:2019-03-26

    发明人: Seiichi Otsubo

    IPC分类号: A61B17/34 A61B18/14

    摘要: A medical device and a treatment method are disclosed which allow easy formation of a hole using energy and easy expansion of the formed hole without loss of tissue and allow an increase in working efficiency. A medical device is disclosed for forming a hole in a tissue in a living body and expanding the hole, the medical device including: a dilator having a first lumen formed inside and having a tip portion in which the first lumen opens on a distal side; and an output unit that outputs energy for denaturing the tissue and forming a hole, in which the output unit is disposed on a tip portion and formed discontinuously in the circumferential direction of the tip portion, and the outer diameter of the tip portion gradually decreases toward the distal side.