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：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：US20160143559A1

公开(公告)日：2016-05-26

申请号：US15008926

申请日：2016-01-28

Applicant: OLYMPUS CORPORATION

Inventor： Takahiro IIDA ,  Atsushi KIMURA ,  Atsushi CHIBA ,  Ryoji SATO

IPC: A61B5/06

CPC classification number: A61B5/062 ,  A61B1/041

Abstract: A position detection system for detecting a position of a capsule medical device is provided. The capsule medical device has a coil constituting a part of a resonance circuit to generate an AC magnetic field. The position detection system includes: sensing coils that detect the AC magnetic field and output detection signals; and a calculation unit that calculates the position of the capsule medical device based on the detection signals. The calculation unit: determines a sensing coil having a maximum amplitude of the AC magnetic field as a reference coil among the sensing coils based on amplitude values of the AC magnetic field detected by the sensing coils, the amplitude values being calculated based on the detection signals; and determines a polarity of each sensing coil based on a first detection signal from the reference coil and a second detection signal from each sensing coil other than the reference coil.

Abstract translation: 提供了一种用于检测胶囊型医疗装置的位置的位置检测系统。 胶囊医疗装置具有构成谐振电路的一部分的线圈，以产生交流磁场。 位置检测系统包括：检测线圈，检测交流磁场并输出检测信号; 以及计算单元，其基于检测信号来计算胶囊型医疗装置的位置。 计算单元基于感测线圈检测到的交流磁场的振幅值，确定感测线圈中具有作为基准线圈的交流磁场的最大振幅的感测线圈，基于检测信号计算振幅值 ; 并且基于来自参考线圈的第一检测信号和除了参考线圈之外的每个感测线圈的第二检测信号来确定每个感测线圈的极性。