公开(公告)号：US20140336684A1

公开(公告)日：2014-11-13

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

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。