公开(公告)号：US4969709A

公开(公告)日：1990-11-13

申请号：US420498

申请日：1989-10-11

申请人： Ichiro Sogawa ,  Nao-omi Maeda ,  Kazuhiko Hayashi ,  Masahiko Kanda ,  Koro Yotsuya

发明人： Ichiro Sogawa ,  Nao-omi Maeda ,  Kazuhiko Hayashi ,  Masahiko Kanda ,  Koro Yotsuya

IPC分类号： A61B1/005 ,  A61F2/00 ,  G02B6/35

CPC分类号： A61B1/0058 ,  A61F2210/0047 ,  G02B6/3502 ,  G02B6/3576

摘要： A mechanism for bending an elongated body such as the tube of an endoscope without the use of electric elements, thereby eliminating a shock hazard. A shape-memorizing alloy is inserted into the elongated body at portions to be bent. In some embodiments, heat for causing the shape-memorizing alloy and hence the elongated body to bend is produced by light carried by an optical fiber, while in other embodiments frictional heat produced by a mechanism vibrator is employed. In some embodiments using light, a shutter arrangement is added to control the heating of the shape-memorizing alloy.

公开(公告)号：US4904048A

公开(公告)日：1990-02-27

申请号：US153910

申请日：1988-02-09

申请人： Ichiro Sogawa ,  Nao-omi Maeda ,  Kazuhiko Hayashi ,  Masahiko Kanda ,  Koro Yotsuya

发明人： Ichiro Sogawa ,  Nao-omi Maeda ,  Kazuhiko Hayashi ,  Masahiko Kanda ,  Koro Yotsuya

IPC分类号： A61B1/005 ,  A61F2/00 ,  G02B6/35

CPC分类号： A61B1/0058 ,  A61F2210/0047 ,  G02B6/3502 ,  G02B6/3576

摘要： A mechanism for bending an elongated body such as the tube of an endoscope without the use of electric elements, thereby eliminating a shock hazard. A shape-memorizing alloy is inserted into the elongated body at portions to be bent. In some embodiments, heat for causing the shape-memorizing alloy and hence the elongated body to bend is produced by light carried by an optical fiber, while in other embodiments frictional heat produced by a mechanism vibrator is employed. In some embodiments using light, a shutter arrangement is added to control the heating of the shape-memorizing alloy.