公开(公告)号：US20210290047A1

公开(公告)日：2021-09-23

申请号：US17340342

申请日：2021-06-07

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke SUZUKI ,  Atsushi CHIBA ,  Takahiro IIDA

IPC: A61B1/04 ,  A61B1/00 ,  A61B1/273

Abstract: An image processing apparatus includes: a processor including hardware. The processor is configured to extract pieces of positional information associated with image data captured by a capsule endoscope introduced into a digestive tract to calculate a movement amount of an image capturing position of the capsule endoscope in a luminal direction, acquire, from the pieces of positional information, a change amount of the image capturing position of the capsule endoscope in a direction different from the luminal direction, select first position information from among the pieces of positional information, the first position information being position information for which the change amount of the positional information is smaller than a first threshold and the movement amount is smaller than a second threshold, and generate a shape model of the digestive tract by using the first position information.

公开(公告)号：US20170311773A1

公开(公告)日：2017-11-02

申请号：US15648619

申请日：2017-07-13

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke SUZUKI ,  Atsushi CHIBA ,  Hironao KAWANO ,  Atsushi KIMURA

IPC: A61B1/00 ,  A61B5/06 ,  A61B1/04

CPC classification number: A61B1/00009 ,  A61B1/00016 ,  A61B1/00025 ,  A61B1/00158 ,  A61B1/041 ,  A61B5/062 ,  A61B5/073 ,  A61B2562/046

Abstract: A position detection system includes: a capsule medical device configured to generate a position-detecting magnetic field; a plurality of detection coils arranged outside a subject; and a processor including hardware. The processor is configured to correct a magnetic field component caused by a first magnetic field generation material with respect to each of measurement values of detection signals output from the detection coils, the first magnetic field generation material being arranged inside a space that the position-detecting magnetic field generated by the capsule medical device present inside a detection target region is reachable, the detection target region being a region in which a position of the capsule medical device is detectable, the first magnetic field generation material being configured to generate a magnetic field due to action of the position-detecting magnetic field.

公开(公告)号：US20170224423A1

公开(公告)日：2017-08-10

申请号：US15498559

申请日：2017-04-27

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke SUZUKI

IPC: A61B34/20 ,  G05B19/04 ,  A61B1/05 ,  A61B1/06 ,  A61B1/00 ,  A61B1/04

CPC classification number: A61B34/20 ,  A61B1/00158 ,  A61B1/00188 ,  A61B1/041 ,  A61B1/051 ,  A61B1/0684 ,  A61B5/062 ,  A61B5/073 ,  A61B2034/2051 ,  A61B2034/2065 ,  A61M37/00 ,  A61M2205/0272 ,  A61M2205/13 ,  G05B19/041 ,  G05B2219/23388

Abstract: A position detection system includes: an object to be detected having a magnetic field generator to generate a position detecting magnetic field, and configured to be introduced into a subject; detection coils, each being configured to detect the position detecting magnetic field to output a detection signal; and a processor including hardware. The processor is configured to: correct measured values of detection signals output from the detection coils using a magnetic field generated by applying the position detecting magnetic field to a metal plate, the metal plate being disposed on a side opposite to an area to be detected of the object to be detected relative to the detection coils; and calculate at least one of a position and a direction of the object to be detected using the corrected measured values of the detection signals.

公开(公告)号：US20160161573A1

公开(公告)日：2016-06-09

申请号：US15046505

申请日：2016-02-18

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke SUZUKI

IPC: G01R33/06

CPC classification number: G01R33/063 ,  G01R33/022 ,  G01R33/20 ,  G01R33/3628

Abstract: A magnetic field detection device includes: a resonance circuit having a winding coil for converting a magnetic field signal of an alternating magnetic field into a voltage signal and having a capacitor connected in parallel to the coil; an element connected in series to an output stage of the resonance circuit; and a low noise amplifier connected to an output stage of the element. The element has a reactance whose sign is opposite to that of an imaginary part of an impedance of the resonance circuit at a detected frequency of the alternating magnetic field. An absolute value of a combined impedance of the resonance circuit and the element is smaller than an internal resistance of the coil.

Abstract translation: 磁场检测装置包括：谐振电路，具有用于将交变磁场的磁场信号转换为电压信号并具有与线圈并联连接的电容器的绕组线圈; 与谐振电路的输出级串联连接的元件; 以及连接到该元件的输出级的低噪声放大器。 在交变磁场的检测频率下，元件具有符号与谐振电路的阻抗的虚部的符号相反的电抗。 谐振电路和元件的组合阻抗的绝对值小于线圈的内部电阻。

公开(公告)号：US20180035913A1

公开(公告)日：2018-02-08

申请号：US15788095

申请日：2017-10-19

Applicant: OLYMPUS CORPORATION

Inventor： Atsushi CHIBA ,  Yusuke SUZUKI

IPC: A61B5/06 ,  A61B5/00 ,  A61B1/04 ,  A61B1/00

CPC classification number: A61B5/062 ,  A61B1/00032 ,  A61B1/00158 ,  A61B1/041 ,  A61B5/0084 ,  A61B5/4233 ,  A61B5/4238 ,  A61B5/4255 ,  A61B5/6861 ,  A61B5/742 ,  A61B2505/05 ,  A61B2562/0233 ,  A61B2562/162

Abstract: A position detection system includes: a detection target including a magnetic field generator and a permanent magnet; detection coils; a guidance magnetic field generator including a magnetic field generation source configured to generate a guidance magnetic field for guiding the detection target, and a driving mechanism configured to change at least one of a position and a posture of the magnetic field generation source, wherein at least a part of the guidance magnetic field generator is formed of a conductor that generates an interference magnetic field; a guidance magnetic field controller configured to control an operation of the driving mechanism; and a position detector configured to calculate at least one of a position and a posture of the detection target by using: detection signals respectively output from the detection coils; and at least one of a position and a posture of the conductor.

公开(公告)号：US20170108356A1

公开(公告)日：2017-04-20

申请号：US15381887

申请日：2016-12-16

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro IIDA ,  Atsushi CHIBA ,  Yusuke SUZUKI ,  Atsushi KIMURA

IPC: G01D5/20 ,  A61B1/04 ,  A61B5/06

CPC classification number: G01D5/20 ,  A61B1/00158 ,  A61B1/041 ,  A61B5/062 ,  A61B5/073 ,  A61B5/7257 ,  G01D5/2066

Abstract: A position detecting system includes: a capsule medical device having therein a magnetic field generation coil for generating a magnetic field; detection coils configured to detect the magnetic field generated by the magnetic field generation coil, and to output detection signals; at least one reference coil configured to detect a magnetic field and to output a detection signal, and arranged at a position where a signal-to-noise ratio to the magnetic field generated by the magnetic field generation coil is smaller than a signal-to-noise ratio in each of the detection signals detected by the detection coils; and a magnetic field correction unit configured to correct magnetic field detection values based on the detection signals respectively output from the detection coils, using at least one reference magnetic field detection value that is a detection value of the magnetic field based on the detection signal output from the at least one reference coil.

公开(公告)号：US20200373955A1

公开(公告)日：2020-11-26

申请号：US16991615

申请日：2020-08-12

Applicant: OLYMPUS CORPORATION

Inventor： Yusuke SUZUKI ,  Toru MIYAZONO

IPC: H04B1/18 ,  A61B1/00 ,  A61B1/04

Abstract: A receiving device includes: a receiving antenna configured to receive a wireless signal; a terminal circuit provided to the receiving antenna; a cable configured to transmit the wireless signal, one end of the cable being connected to the receiving antenna or the terminal circuit; a switch configured to switch between a first connection state where the one end of the cable is connected to the receiving antenna and a second connection state where the one end is connected to the terminal circuit; a measuring circuit configured to measures a first received strength of the wireless signal received by the receiving antenna and the cable in the first connection state and a second received strength of the wireless signal received by the cable in the second connection state; and a calculator configured to calculate, based on the first and second received strengths, a third received strength of the wireless signal.