公开(公告)号：US20140343584A1

公开(公告)日：2014-11-20

申请号：US14360715

申请日：2012-10-30

Applicant: NIPRO CORPORATION

Inventor： Nobuyuki Soeda ,  Katsuya Miyagawa ,  Yuuki Nishimura ,  Misa Kakinoki

IPC: A61B17/3207 ,  A61M25/00

CPC classification number: A61B17/320783 ,  A61B17/320758 ,  A61B2017/22071 ,  A61B2017/320064 ,  A61M25/0023

Abstract: An atherectomy catheter has a shaft having an opening in the side wall, a cutter which is positioned near the opening in the internal space of the shaft and which can move in the axial direction of the shaft, and a distal end portion connected to the distal end of the shaft. The distal end portion has a blade tube connected to the distal end of the shaft by continuing the internal space, a reduced diameter portion connected to the distal end of the blade tube by continuing the internal space, and a distal end tip whose outer diameter is smaller than the outer diameter of the distal end of the blade tube, whose distal end side is projected outward from the distal end of the reduced diameter portion, and whose proximal end side is extended into the internal space of the blade tube through the internal space of the reduced diameter portion.

Abstract translation: 粥样斑块切除导管具有在侧壁中具有开口的轴，切割器位于轴的内部空间中的开口附近并且可以在轴的轴向方向上移动，并且远端部分连接到远端 轴的端部。 前端部具有通过连续内部空间连接到轴的远端的叶片管，通过继续内部空间连接到叶片管的远端的直径减小的部分，以及外径为 小于叶片管的远端的外径，其远端侧从缩径部的远端向外突出，并且其近端侧通过内部空间延伸到叶片管的内部空间 的直径减小部分。

公开(公告)号：US09572594B2

公开(公告)日：2017-02-21

申请号：US14360715

申请日：2012-10-30

Applicant: NIPRO CORPORATION

Inventor： Nobuyuki Soeda ,  Katsuya Miyagawa ,  Yuuki Nishimura ,  Misa Kakinoki

IPC: A61B17/3207 ,  A61M25/00 ,  A61B17/22 ,  A61B17/32

CPC classification number: A61B17/320783 ,  A61B17/320758 ,  A61B2017/22071 ,  A61B2017/320064 ,  A61M25/0023

Abstract: An atherectomy catheter has a shaft having an opening in the side wall, a cutter which is positioned near the opening in the internal space of the shaft and which can move in the axial direction of the shaft, and a distal end portion connected to the distal end of the shaft. The distal end portion has a blade tube connected to the distal end of the shaft by continuing the internal space, a reduced diameter portion connected to the distal end of the blade tube by continuing the internal space, and a distal end tip whose outer diameter is smaller than the outer diameter of the distal end of the blade tube, whose distal end side is projected outward from the distal end of the reduced diameter portion, and whose proximal end side is extended into the internal space of the blade tube through the internal space of the reduced diameter portion.

Abstract translation: 粥样斑块切除导管具有在侧壁中具有开口的轴，切割器位于轴的内部空间中的开口附近并且可以在轴的轴向方向上移动，并且远端部分连接到远端 轴的端部。 前端部具有通过连续内部空间连接到轴的远端的叶片管，通过继续内部空间而连接到叶片管的远端的直径减小的部分，以及外径为 小于叶片管的远端的外径，其远端侧从缩径部的远端向外突出，并且其近端侧通过内部空间延伸到叶片管的内部空间 的直径减小部分。

公开(公告)号：US09456844B2

公开(公告)日：2016-10-04

申请号：US14360722

申请日：2012-10-30

Applicant: NIPRO CORPORATION

Inventor： Nobuyuki Soeda ,  Katsuya Miyagawa ,  Yuuki Nishimura ,  Misa Kakinoki

IPC: A61B17/3207 ,  A61B17/00 ,  A61B17/22

CPC classification number: A61B17/320758 ,  A61B17/320783 ,  A61B2017/00734 ,  A61B2017/22071 ,  A61B2017/320791

Abstract: An atherectomy device has a drive circuit which rotates a direct-current motor. The drive circuit has a three-terminal regulator having an ADJ terminal. A partial pressure resistor is connected between the ADJ terminal and an output terminal of the three-terminal regulator. Moreover, one end of six variable resistors whose resistances are set to be different from each other is connected to the ADJ terminal. The other end of the six variable resistors is selectively connected to the negative electrode of a battery by a change-over switch which is a rotary switch having six contacts. When the variable resistors are switched by the change-over switch, the output current of the three-terminal regulator becomes large. Thus, the rotation speed of a cutter which is rotated by the direct-current motor becomes high.

Abstract translation: 动脉粥样硬化切除装置具有使直流电动机旋转的驱动电路。 驱动电路具有具有ADJ端子的三端调节器。 ADJ端子和三端稳压器的输出端子之间连接有分压电阻。 此外，电阻被设定为彼此不同的六个可变电阻器的一端连接到ADJ端子。 六个可变电阻器的另一端通过具有六个触点的旋转开关的转换开关选择性地连接到电池的负极。 当可变电阻由转换开关切换时，三端稳压器的输出电流变大。 因此，由直流电动机旋转的切割器的转速变高。