Hamamatsu-photonics K.k.

Yamaha Hatsudoki Kabushiki Kaisha

Other

Nakayama, Teiji

Hiroyuki Okada

Takaji Yamashita

Haruyoshi Toyoda

Daisuke Yamashita

Toyohiko Yamauchi

Tsuyoshi Kosugi

Yoshiyuki Shimizu

Yohei Takata

Eiichi Tanaka

Akihiro Kakimoto

Koutaro Ogura

Kazutaka Suzuki

Yutaka Yamashita

Mitsuo Watanabe

Kazuo Umemura

Keiji Shimizu

Kiyomori Asano

Teiji Nakayama

Katsuhiro Kobayashi

Koutarou Ogura

Jeffrey Lee Stoxen

Gregory James Schulze

James Christopher Vizanko

Hitoshi Kato

Kazuo c/o National University Corporation Umemura

A catheter kit includes a catheter having an optical fiber, and a catheter accommodating tool which accommodates the catheter. The catheter accommodating tool has a tubular hoop, and a position adjustment mechanism provided at the hoop. The hoop has a hoop tip end portion at which a catheter tip end portion, from which laser light transmitted through the optical fiber is emitted, is disposed, and a hoop base end portion which is opposite to the hoop tip end portion. The position adjustment mechanism is provided at the hoop base end portion and changes a position of the catheter tip end portion with respect to the hoop tip end portion.

Catheter kit

A light output monitoring apparatus includes a light receiving unit, an attachment unit, an adapter, and a protective cap, and monitors a power of light output from a light emitting end of a catheter incorporating an optical fiber. The protective cap includes an insertion opening into which a part of the catheter of a predetermined range on the light emitting end side is removably inserted, includes a window portion for transmitting the light output from the light emitting end of the catheter, and is fixed in position by being inserted into a through-hole of the adapter. The adapter is fixed in position by being attached to the attachment unit.

Optical output monitoring device, optical output monitoring method, protective cap, and adapter

A snow ski assembly for a snow vehicle includes a ski body, a ski spindle, a ski stopper and a ski keel pressure adjuster. The ski body has an upper surface with a ski spindle attachment and a bottom surface with a keel. The ski spindle has a lower end pivotally connected to the ski spindle attachment of the ski body about a pivot axis. The ski stopper is disposed between the upper surface of the ski body and the lower end of the ski spindle. The ski keel pressure adjuster includes at least one adjustment member and at least one user input. The at least one adjustment member is movably disposed with respect to the ski body between a first position in which the ski stopper has a first compression characteristic and a second position in which the ski stopper has a second compression characteristic. The at least one user input is operatively coupled to the at least one adjustment member to move the at least one adjustment member in response to operation of the at least one user input.

Snow ski assembly for snow vehicle

A catheter kit includes a catheter having an optical fiber, and a catheter accommodating tool which accommodates the catheter. The catheter accommodating tool has a tubular hoop, and a protection cap which is provided to the hoop. The protection cap has a transmission window through which laser light L output from the catheter passes.

A light measurement device measures the intensity of laser light output from a catheter tip end portion of a catheter having a built-in optical fiber. The light measurement device includes a light receiving part which receives the laser light output from the catheter tip end portion and a mounting part which is disposed at a position facing the light receiving part. The mounting part defines a position of a tubular hoop, which accommodates the catheter, with respect to the light receiving part. In a state in which the position of the hoop is defined by the mounting part, the light measurement device obtains the intensity of the laser light by inputting the laser light to the light receiving part.

Optical measurement device, catheter kit, and optical measurement method

An eye movement feature amount calculating system includes: a moving state input unit that inputs moving state values in a time series indicating a moving state of an eye of an examinee; a saccade period extracting unit that extracts a saccade period in which the eye performs saccadic movement based on time-series variation of the moving state values; and a feature amount calculating unit that divides a period including at least a part of the extracted saccade period into a plurality of periods and calculates a feature amount of eye movement of the subject based on the separate periods.

Eye movement feature amount calculating system, eye movement feature amount calculating method, and non-transitory computer-readable storage medium

The position of a metal markerrelative to an optical fiberis fixed, and the metal markercan be moved up close to a target site such as a thrombus. It is preferable that the position, in an optical fiber longitudinal direction, of a front-end face of the optical fiberis coincident with the position, in an optical fiber longitudinal direction, of a front-end face of the metal marker. More specifically, since the distance between the target site and the front end of the optical fiberis known by radiography, it becomes unnecessary to use a large quantity of contrast agent and irradiate a laser beam depending on skill and intuition, and therefore an effective laser beam irradiation becomes possible.

Catheter, examination system and thrombus removing device

An object of the present invention is to perform a more accurate and detailed diagnosis of a brain disease. A diagnosis serverof the brain disease diagnosis systemfor diagnosing a brain disease of an examined person includes: an acquiring unitfor acquiring a brain image of the examined person so as to obtain an acquired image; a region setting unitfor setting a plurality of regions in the acquired image; an individual index value calculating unitfor calculating an individual index value based on a pixel value of the acquired image, in each of the plurality of regions; a whole index value calculating unitfor calculating a whole index value by weighting the individual index value of each of the plurality of regions; a diagnosis unitfor diagnosing the brain disease of the examined person based on the whole index value; and an output unitfor outputting information indicating a diagnosis outcome.

Brain disease diagnosis system

To perform a more accurate and detailed diagnosis of a brain disease, a diagnosis server of the brain disease diagnosis system for diagnosing a brain disease of an examined person includes: an acquiring unit for acquiring a brain image of the examined person so as to obtain an acquired image; a region setting unit for setting a plurality of regions in the acquired image; an individual index value calculating unit for calculating an individual index value based on a pixel value of the acquired image, in each of the plurality of regions; a whole index value calculating unit for calculating a whole index value by weighting the individual index value of each of the plurality of regions; a diagnosis unit for diagnosing the brain disease of the examined person based on the whole index value; and an output unit for outputting information indicating a diagnosis outcome.

A snowmobile includes steering handlebars; a steering column attached to the steering handlebars and extending directly downward or obliquely downward; a power steering device having a motor and attached to the steering column; a power transmission mechanism arranged to transmit at least the driving force of the motor; and a ski coupled to the power transmission mechanism to be turned by the power transmission mechanism. The power steering device includes a sensor arranged to detect the rotation of the steering column. The motor has a motor shaft tilted from both the fore and aft direction and the left and right direction of the vehicle.

Snowmobile

A snowmobile includes steering handlebars, a pair of left and right skis, and a power transmission mechanism arranged to couple the steering handlebars and the skis. The power transmission mechanism includes a first rotary shaft extending directly downward or obliquely downward from the steering handlebars for rotation along with the steering handlebars; a first link mechanism coupled to the first rotary shaft; a second rotary shaft coupled to the first link mechanism and arranged to rotate along with the rotation of the first rotary shaft via the first link mechanism, the second rotary shaft being disposed on a different axis from that of the first rotary shaft; a second link mechanism disposed between the second rotary shaft and the skis; and a power steering device mounted to the second link mechanism as a part thereof and having an actuator to be driven based on the rotation of the second rotary shaft.

A snowmobile includes an engine room accommodating an engine body, a steering shaft transferring a steering force generated by the steering of a handle to steering skis, and an assist motor accommodated in the engine room and assisting the steering force, wherein the assist motor is mounted to the steering shaft and located ahead of an uppermost portion of the engine body.

A rotating ceptorprovided inside a detector portionincludes nine shield plates Sto Sdisposed in parallel to each other in between adjacent detector rings R, acts as a collimator, and allows only those photon pairs that have traveled approximately parallel to a slice plane to be made incident upon photon detectors D located behind the rotating ceptor. Each of the shield plates S is not formed annularly, and provided near the measurement field of viewof part of N photon detectors D that constitute each of the detector rings R. The rotating ceptoris rotatable about its center axis. Each of the shield plates S is provided with bar-shaped radiation source insertion holesandfor allowing a bar-shaped positron emission radiation sourceto be inserted therein and supported thereby.

Pet device

A PET apparatus () includes a detecting section (). Each cylindrical detector () of the detecting section () has a plurality of block detectors (to) arranged on the same circumference on a place perpendicular to a central axis (CAX) in the form of a ring. Each block detector () is a two-dimensional position detector which detects the two-dimensional incident position of a photon incident on a light-receiving surface. Each slice collimator () extends to a rear portion of a corresponding one of cylindrical detectors () through the space between adjacent cylindrical detectors () and () and is integrally fixed by a holding plate () at the rear portion.

PET apparatus

A PET apparatus includes a detecting unit; slice septa for transmitting therethrough flying photons nearly perpendicular to the center axis; a slice septa position determining section for determining whether or not the slice septa exist in the measurement space side of at least one of the pair of photon detectors; a two-dimensional projection image storage section for storing coincidence-counting information of the photon pair obtained by the pair of photon detectors; a three-dimensional projection data storage section for storing coincidence counting information obtained by the pair of photon detectors; and an image reconstructing section for reconstruction an image indicative of a spatial distribution of a frequency at which photon pairs are emitted in the measurement space.

Growing community of inventors

Hamamatsu, Japan

Hiroyuki Okada