公开(公告)号：US11478123B2

公开(公告)日：2022-10-25

申请号：US16737368

申请日：2020-01-08

Applicant: OLYMPUS CORPORATION

Inventor： Takashi Suzuki ,  Fumiyuki Onoda ,  Takashi Yamashita ,  Yasuaki Natori ,  Yoshitaka Umemoto ,  Toshihiro Kumagai ,  Takuro Onda

IPC: A61B1/00 ,  G02B23/24

Abstract: A control apparatus controls an operation of a self-propelled mechanism of an endoscope. The control apparatus includes a drive circuit that outputs a motor current, a motor current detection circuit that acquires a value relating to magnitude of the motor current as a detection value, a storage circuit that stores a limit value relating to the detection value, and a control circuit that performs an operation as a first controller that controls the drive circuit so as to stop the motor when it is determined that the detection value exceeds a value relating to the limit value, and performs an operation as a second controller that controls the drive circuit so as to stop the motor when it is determined that the detection value exceeds the value relating to the limit value.

公开(公告)号：US10978970B2

公开(公告)日：2021-04-13

申请号：US16697639

申请日：2019-11-27

Applicant: OLYMPUS CORPORATION

Inventor： Yoshitaka Umemoto ,  Takashi Suzuki ,  Toshihiro Kumagai ,  Takuro Onda

IPC: H02P6/06 ,  A61B1/00 ,  H02P6/24

Abstract: An apparatus includes a rotation body, a motor, a drive controller, a rotating speed detector, a rotation error determination circuit, and a filter. The rotation body is provided on an outer peripheral surface of an elongated insertion section and configured to be rotatable around a longitudinal axis. The motor rotates the rotation body. The drive controller controls driving of the motor. The rotating speed detector detects a rotating speed of the motor based on an encoder signal output from an encoder. The rotation error determination circuit determines an error in rotation of the rotation body based on the detected rotating speed. The filter passes, as the encoder signal, only a signal having a frequency, outside a frequency band of a high-frequency signal of a high-frequency treatment instrument, of signals input to the rotating speed detector.

公开(公告)号：US09750394B2

公开(公告)日：2017-09-05

申请号：US15143875

申请日：2016-05-02

Applicant: OLYMPUS CORPORATION

Inventor： Toshihiro Kumagai ,  Hidenobu Kubo

IPC: A61B1/04 ,  A61B1/00 ,  G02B23/24 ,  G01B7/02 ,  A61B5/06

CPC classification number: A61B1/00009 ,  A61B1/00006 ,  A61B1/00045 ,  A61B1/00066 ,  A61B1/0008 ,  A61B1/00147 ,  A61B1/04 ,  A61B5/068 ,  G01B7/02 ,  G02B23/24

Abstract: In an endoscope system that obtains a captured image inside of a body cavity by use of an insertion unit of an endoscope apparatus which is inserted into the body cavity of a subject, an oscillator outputs an oscillation pulse signal, and receives a reflected pulse signal. A transmission line is provided along the insertion unit near an envelope of the insertion unit, and transmits a pulse signal output from the oscillator. A time calculating unit and an insertion length calculating unit obtain a time difference between the oscillation pulse signal and the reflected pulse signal on the basis of the oscillation pulse signal output by the oscillator and the reflected pulse signal received by the oscillator, and calculate an insertion length of the insertion unit on the basis of the obtained time difference.