Olympus Corporation

Zephyr Corporation

Olympus Medical Systems Corporation

Toray Industries, Inc.

Ryosuke Ito

Yuki Shono

Hideyuki Takaoka

Yohei Tanikawa

Kiyoshi Sato

Takeshi Suga

Kenji Kamimura

Takayuki Tsukagoshi

Hideaki Tamura

Katsushi Kawakami

Koji Matsumoto

Masahiro Katakura

Kazuhiro Gono

Hiroya Fukuyama

Shinichi Takimoto

Kenji Taira

Hiroyuki Nishida

Jumpei Takahashi

Koichiro Ito

Ken Fujinuma

Yoshimine Kobayashi

Takashi Yamazaki

Asuka Nakamura

Toshiharu Narita

Takanori Okubo

Tadaaki Chikashige

Hikaru Matsumiya

Atsushi Kataoka

Provided are a forceps including: a shaft; a wire that is movable in a longitudinal direction inside the shaft; and a first arm and a second arm, each of which has a first jaw or a second jaw, that are connected to each other in a pivotable manner by means of a third joint. The first arm is connected to a distal end of the shaft in a pivotable manner by means of a first joint, and the second arm is connected to a distal end of the wire in a pivotable manner by means of a second joint. The third joint is provided between the first jaw and the first joint and between the second jaw and the second joint, and is disposed lateral to the wire in a state in which the first and second jaws are open. The first and second jaws are closed while the third joint is moving outward in the lateral direction with respect to the shaft.

Forceps and tissue collection method

A control device for an ablation treatment tool includes: a target-value storage unit that stores a target value for the total treatment area; an energy-source output unit that outputs, to the ablation treatment tool, an energy source for performing ablation treatment; an area calculation unit that calculates the total treatment area of the ileal mucosa on which the ablation treatment has been performed; and a control unit that controls termination of the ablation treatment performed by the ablation treatment tool. The control unit notifies an operator of the termination of the ablation treatment or stops the output of the energy source from the energy-source output unit when the calculated total treatment area of the ileal mucosa becomes equal to or greater than the target value.

Ablation-treatment-tool control device, ablation system, and ileal-mucosa ablation treatment method

An ablation system includes: an endoscope; an ablation treatment tool; an overtube; a first operation member that is provided at a base end portion of the overtube; and a second operation member that is attachable to and detachable from an intermediate position in a longitudinal direction of an insertion portion of the endoscope. The overtube has a balloon that is configured to fix the overtube to the gastro-intestinal tract; the insertion portion and the ablation treatment tool can be integrally moved in the overtube in the longitudinal direction; and the first and second operation members each have a finger holder that holds at least one finger of one hand. The first operation member is distinct from the overtube, and is attachable to and detachable from an outer circumferential surface of the overtube, at an arbitrary position in the longitudinal direction of the overtube.

Gastro-intestinal-tract ablation system

An image processing device includes: one or more processors including hardware. The one or more processors are configured to: calculate, on a basis of a reference image acquired by capturing an image of a reference subject which has an optical characteristic that is equivalent to at least a part of a living body, image transformation parameters through congruence transformation that transforms a coordinate corresponding to a color of target region included in the reference image defined in a color space into a coordinate corresponding to an achromatic color in the color space; and perform, in the color space on a basis of the calculated image transformation parameters, the congruence transformation of colors of a color image acquired by capturing an image of the living body, the color image being constituted by at least two monochromatic image corresponding to different illumination having different center wavelengths.

Image processing device, image processing method, endoscope system, and endoscope observation method

An endoscope apparatus including: a light source configured to emit illumination light including light in a first wavelength band included in a blue wavelength band, light in a first narrowband included in a green wavelength band, and light in a second narrowband having a same light absorption coefficient of hemoglobin as that of the light in the first narrowband; an imager configured to acquire a first image of an object in the first wavelength band, a first narrowband image of the object in the first narrowband, and a second narrowband image of the object in the second narrowband; and a processor including hardware. The processor is configured to implement acquiring scattering characteristics information based on a comparison result between the first narrowband image and the second narrowband image, and generating an observation image using the first image, the first narrowband image, and the scattering characteristics information.

Endoscope apparatus and operating method of endoscope apparatus

A measurement probe is configured to be detachably connected to a biological optical measurement apparatus that performs an optical measurement on body tissue. The measurement probe includes an illumination fiber configured to irradiate the body tissue with illumination light, and a plurality of detection fibers configured to detect return light of at least one of the illumination light reflected from the body tissue and the illumination light scattered from the body tissue. On a plane which is away from distal ends of the illumination fiber and the plurality of detection fibers and through which the illumination light and the return light can pass, a detection area of the return light in each of the plurality of detection fibers is included in all of an illumination area of the illumination fiber or inside of the illumination area.

Measurement probe and biological optical measurement system

A processing apparatus includes: a light source unit configured to emit partially coherent light having a coherence length that is equal to or more than inverse of a scattering coefficient of a light scattering body and shorter than half of inverse of a reduced scattering coefficient of the light scattering body; an illumination unit configured to irradiate an illumination area on a surface of the light scattering body, with the partially coherent light emitted from the light source unit; a detection unit configured to detect, in a detection area including the illumination area, a signal of scattered and returned light from the light scattering body; and an interference component extracting unit configured to extract an interference component by excluding a noninterference component from the signal of the scattered and returned light detected by the detection unit.

Processing apparatus

A contact detecting apparatus detects contact between a body tissue and a probe for emitting illumination light onto the body tissue and receiving return light of the illumination light scattered from the body tissue. The contact detecting apparatus includes: a laser light source that emits laser light to irradiate a specified region of the body tissue via the probe; a photoelectric conversion unit that converts light received via the probe into an electric signal; and a signal processing unit that determines whether or not there is contact between a distal end of the probe and the body tissue based on whether the electric signal includes a component of a beat signal caused by interference of the return light of the laser light scattered from each of a surface of the body tissue and a surface of the distal end of the probe.

Contact detecting apparatus, optical measurement apparatus, and contact detecting method

A measurement probe is configured to be detachably connected to an optical measurement apparatus for optically measuring a living tissue and includes: an illuminating fiber configured to apply illumination light to the living tissue; a plurality of light receiving fibers configured to receive, at different positions, the backscattering light which is applied by the illuminating fiber and backreflected and/or backscattered from the living tissue; and a support section that is substantially cylindrical and configured to make a distance from each distal end of the illuminating fiber and the plurality of light receiving fibers to the living tissue constant, and permit the illumination light to pass through at least a part of a side surface thereof. An illumination area of the illumination light applied by the illuminating fiber on the living tissue is larger than the area of a distal end of the support section.

Measurement probe

An optical measuring device includes: a light source unit; a measurement probe including a fiber bundle, an illumination fiber that illuminates a living tissue with a illumination light, and a plurality of light-receiving fibers that receives return light of the illumination light reflected and/or scattered at the living tissue; a detection unit that receives the return light of the illumination light detected by the plurality of respective light-receiving fibers, and performs photoelectric conversion to detect respective signal intensities; and an association unit that associates the respective signal intensities detected by the detection unit with distances from the illumination fiber to the respective light-receiving fibers on an end face of a distal end portion of the measurement probe, when light having an intensity gradient around the illumination fiber is projected to the end face of the distal end portion of the measurement probe.

Optical measuring device and fiber bundle association method

A scattered light measurement apparatus includes an optical measurement apparatus, and a scattered light measurement probe configured to irradiate an object with light from the optical measurement apparatus, configured to receive light from the object, and configured to output the received light to the optical measurement apparatus. The optical measurement apparatus includes: a light source configured to emit light including at least light of a measurement target wavelength; first and second optical detectors configured to detect the light received by the scattered light measurement probe; a branching unit configured to guide the light from the light source to the scattered light measurement probe and guide the light from the scattered light measurement probe to the first and second optical detectors; and a control unit configured to evaluate scattering characteristics of a surface layer of the object based on the light detected by the first and second optical detectors.

Scattered light measurement apparatus

An endoscope system includes: an endoscope with a unit to be inserted into a subject and captures an inside image of the subject by an imaging unit provided in the unit to generate an image signal; an optical apparatus including a measurement probe to be inserted into the subject through the unit; an endoscope unit that switches between observation light of a plurality of wavelengths and outputs the observation light to observe a target object from the unit; a probe unit that outputs measurement light to measure characteristics of the target object via the measurement probe; a light unit that receives return light via the measurement probe, the return light caused by reflection and/or scattering of the measurement light on the target object; and a switching unit that switches a wavelength band of the measurement light to a different wavelength band from the observation light outputted by the endoscope unit.

Optical measurement apparatus and endoscope system

A calibration apparatus includes an insertion portion into which a measurement probe is inserted and a reference reflection plate that is arranged at a position away from a distal end of the measurement probe by a predetermined distance in a state in which the measurement probe has been inserted in the insertion portion and that has uniform reflectivity of light in a range of a wavelength to be measured in an irradiation plane of an illumination light, wherein a material forming the reference reflection plate has a scattering mean free path that is greater than a spatial coherence length at the predetermined distance.

Calibration apparatus and calibration method

An optical measurement apparatus that measures an optical property of a scattering medium includes a light source that supplies illumination light having at least one spectral component, an illumination fiber for guiding the light supplied by the light source and emitting the light to the scattering medium, a detection fiber for receiving returned light from the scattering medium at a tip thereof and guiding the returned light toward a base end thereof, a detecting unit that detects light output from the base end of the detection fiber, a measuring unit that measures a property of the scattering medium based on a detection result obtained by the detecting unit, and a switching unit that switches between total areas of emission regions, in which light is emitted, at an end face of the illumination fiber.

Optical measurement apparatus and probe apparatus

There is provided an inside observation apparatus of an endoscope and the like which can perform an inside observation for irradiating an illumination light to a minute area of a surface of an object (for example, a living tissue) having a light scattering property and detecting a back-scattered light of the illumination light, can increase a detected light amount by a simply and low cost configuration by making an area of a detection region larger than an illumination region, and can reduce a time necessary to detect an body (for example, a blood vessel) to be observed and detect a region deeper than a conventional region.

Internal observation device for object having light scattering properties, internal body observation device, endoscope for internal observation and internal observation method

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Hino, Japan

Ryosuke Ito