Olympus Optical Company, Ltd.

Kabushiki Kaisha Toshiba

Olympus Corporation

Tokyo Shibaura Denki Kabushiki Kaisha

Koichi Matsui

Hiroki Hibino

Takashi Tsukaya

Takeshi Matsushiro

Futoshi Kurokawa

Masaaki Hayashi

Masakazu Gotanda

Tatsuya Yamaguchi

Koji Kambara

Katsuya Yokokawa

Ryo Namba

Hideaki Yamagata

Akira Hasegawa

Yutaka Takahashi

Takeaki Nakamura

Akira Suzuki

Akira Taniguchi

Kenji Yoshino

Shuichi Takayama

Koichi Shimizu

Keiichi Hiyama

Akira Murata

Michio Sato

Koji Fujio

Yoshitake Saito

Kitijiro Kohri

Mikio Honda

Kazuo Misawa

Susumu Takahashi

Kimihiko Nishioka

Tatsuo Nagasaki

Takeshi Yokoi

Shinji Yamashita

Katsuyuki Saito

Masahide Kanno

Koji Yamaya

Yasuhiro Ueda

Akinobu Uchikubo

Tomohisa Sakurai

Sakae Takehana

Hideo Adachi

Takehiro Nakagawa

Tsutomu Yamamoto

Shinji Hatta

Shinichiro Hattori

Masao Uehara

Masahiro Kawashima

Hirotsugu Sakata

Nobuo Yamashita

Akiko Mizunuma

Hideo Tomabechi

Akira Yokota

Masanao Murata

Kazunari Kobayashi

Atsushi Amano

Iwao Kanamori

Seiichi Murayama

Kowji Tanikawa

Yutaka Ohshima

Minoru Okabe

Nobuyuki Sakamoto

Nobuo Matsui

Akibumi Ishikawa

Kenji Hirooka

Akio Mitani

Yoshihito Shimizu

Kouji Tanikawa

Kenichi Kikuchi

Tomoaki Sato

Koji Koda

Kyosuke Katayama

Tsuguhisa Sasai

Yoshikazu Tojo

Yoshihiro Kosaka

Yoshihisa Taniguchi

Yoshihito Mino

Toshihiko Hagiwara

Katsuyuki Kanehira

Katsuaki Yamagishi

Tetsuya Kimura

Takahiro Echizenya

Toshimasa Tanaka

Akihiro Miyashita

Kazuo Sonobe

Takeshi Takamatsu, Deceased

Koji Kanbara

Shouichi Ieoka

Kazutada Kobayashi

By Tokuyuki Takamatsu, Legal Representative

Sei Suma

Hiroyuki Tokimoto

Toshiro Ishimura

Masayoshi Naito

Takanori Fukagawa

Yuka Hiraga

Koji Tanikawa

Kazuhiko Kimijima

According to one embodiment, a membrane filtration system includes a raw water tank, a pretreatment membrane module, a raw water feed line, a high-pressure RO membrane module, a high-pressure line, a preceding power recovery unit which pressurize the pretreated water by transmitting the pressure of the concentrate to the pretreated water, a succeeding power recovery unit which pressurize the raw water by transmitting a remaining pressure of the concentrate to the raw water, a concentrate discharge line, a first pressure transmission line communicating to the power recovery unit by being branched from the high-pressure line, a second pressure transmission line communicating to the power recovery unit by being branched from the raw water feed line, and a valve provided in the drain line to regulate a discharge of the concentrate from the power recovery unit in accordance with a pressure loss in the pretreatment membrane module.

Membrane filtration system

According to one embodiment, a seawater desalination apparatus includes a pressure sensor configured to measure a pressure of seawater which is supplied to a reverse osmosis membrane that is configured to separate seawater into fresh water and condensed seawater and to discharge the fresh water and the condensed seawater, a sensor configured to measure a flow amount of the fresh water which is discharged from the reverse osmosis membrane, a sensor configured to measure a flow amount of the condensed seawater discharged from the reverse osmosis membrane or a flow amount of the seawater discharged from a booster pump, a sensor configured to measure a flow amount of the seawater which is supplied to a power recovery device, and a controller configured to execute control based on values measured by the sensors.

Seawater desalination apparatus

According to one embodiment, a seawater desalination system includes a membrane filtering pump, a first to third flowmeter, a filtering membrane, a high-pressure pump, a pressure gauge, a reverse osmosis membrane, a discharge valve and a control module. The membrane filtering pump outputs seawater according to a first control signal. The first flowmeter measures flow rate Q. The high-pressure pump outputs filtered water from the filtering membrane according to a second control signal. The first pressure gauge measures pressure P. The reverse osmosis membrane desalinates the filtered water into fresh water. The second flowmeter measures flow rate Q. The third flowmeter measures flow rate Q. The discharge valve discharges a high-concentration salt water according to a third control signal. The control module performs first, second, and third flow rate control with reference to the flow rate Q, Qand Qand the pressure P

Seawater desalination system

According to one embodiment, a apparatus includes a controller configured to obtain values measured by a first sensor and a second sensor, receive pH target values at the entrance of a first reverse osmosis membrane and at the entrance of a second reverse osmosis membrane, and use a transfer function from the acid injection to pH at the entrance of the first reverse osmosis membrane, a transfer function from the alkaline injection to pH at the entrance of the first reverse osmosis membrane, a transfer function from the acid injection to pH at the entrance of the second reverse osmosis membrane, and a transfer function from the alkaline injection to pH at the entrance of the second reverse osmosis membrane, to control an injection rate of the acid injected from a first injection device and an injection rate of the alkali injected from a second injection device.

Seawater desalination apparatus and chemical injection apparatus

An endoscope apparatus includes: an optical adapter provided with a discrimination capacitor; and an endoscope configured to be detachably provided with the optical adapter at a distal end portion of the endoscope, and configured to include a reference capacitor which is arranged to be connected in series to the discrimination capacitor in a state where the optical adapter is mounted, a DC power supply which is connected in series to the reference capacitor, and a control circuit which calculates a capacitance of the discrimination capacitor on the basis of a voltage value at a connection point between the discrimination capacitor and the reference capacitor, so as to discriminate the kind of the optical adapter.

Endoscope apparatus

The endoscope system comprises a endoscope in which a bendable portion is motor bendable; an operation switch for giving an instruction as to a bending amount; a motor for bending the bendable portion in accordance with a bending instruction signal; a detection portion for detecting the bent state of the bendable portion; a first driving power generating portion which generates power for driving the motor in accordance with a difference between an instructed bending amount fed via the operation switch and a value representing the bending state of the bending portion and given by the detection portion; a second driving power generating portion for generating a pulse driving power having a predetermined magnitude; and a control portion whose control includes selecting one of the first and second driving power generating means depending on said difference, and causing the thus selected means to drive motor so as to bend the bendable portion.

Endoscope system comprising an electrically bendable endoscope

According to the centering mechanism of this invention for an electrically bendable endoscope, the control circuit, in response to an instruction for centering, computes residual bending angles in U/D and L/R directions based on the values obtained as a result of feeding values indicated by the U/D and L/R potentiometers to an A/D converter. The control circuit conducts bending angle adjustment by bending the tip of the endoscope in directions appropriate to cancel out residual bending angles: for example, if the tip has been bent upward immediately before the centering switch is activated, the control circuit causes the tip to be bent downward, and if the tip has been bent leftward immediately before the centering switch is activated, the control circuit causes the tip to be bent rightward. Then, the bending angle is adjusted to zero.

Centering mechanism for controlling the bending of an electrically bendable endoscope, and an endoscope system

There is provided an apparatus for receiving nuclear magnetic resonance signals by applying high frequency energy to a living body placed in a static magnetic field. The distal end portion of the insertion section of the endoscope has a rigid distal end portion and a bendable portion. A housing portion for housing a high frequency coil is provided between the rigid distance portion and the bendable portion. This structure makes it possible to assemble the high frequency coil into the endoscope in a compact manner and can reduce a patient's burden when the insertion section is inserted in the body cavity of the patient.

MRI apparatus for receiving nuclear-magnetic resonance signals of a

A diagnostic system using a nuclear magnetic resonance phenomenon comprises an external magnetic field generator, provided externally, for generating a magnetic field in a living body, a thin diameter member capable of being inserted into a body cavity and having flexibility, a high frequency coil, provided at a top end of the thin diameter member, for transmitting and receiving a high frequency, a nuclear magnetic resonance signal measuring device for receiving a nuclear magnetic resonance signal from the living body, and a transformer, provided between the high frequency coil and the nuclear magnetic resonance signal measuring device, for electrically isolating and separating the high frequency coil from the nuclear magnetic resonance signal measuring device in a manner such that the nuclear magnetic resonance signal is transmittable between the high frequency coil and the nuclear magnetic resonance signal measuring device.

Diagnostic system using nuclear magnetic resonance phenomenon

A cavity insert device comprising an insert section capable of being inserted into tracts and cavities, a detection circuit for detecting conditions of components making up the device, such as an observation device formed at the distal end side of the insert section, and a fuzzy inference section for synthetically determining a plurality of information signals outputted from the detection circuit and producing control signals to control the components. The fuzzy inference section employs inference rules which are empirically considered to be desirable, and control is made by the control signals obtained with the fuzzy inference. The device is thus operated in a nearly optimum state.

Cavity insert device using fuzzy theory

The ultrasonic wave diagnosing apparatus of this invention comprises a controlling circuit controlling the rotation, advance and retreat of an ultrasonic wave oscillator, a DC power source feeding an electric power to a DC motor rotating the ultrasonic wave oscillator, a DC motor controlling circuit inputting a controlling signal from the above mentioned controlling circuit and controlling the voltage of the above mentioned DC power source, a photointerrupter detecting the position of the ultrasonic wave oscillator by the advance and retreat, a stepping motor advancing and retreating the above mentioned ultrasonic wave oscillator and a record controlling apparatus controlling an auxiliary memorizing apparatus which can record an ultrasonic wave image obtained by the above mentioned ultrasonic wave oscillator so that, in order to reverse the rotation by inverting the phases of controlling signals A and B of the stepping motor advancing and retreating the above mentioned ultrasonic wave oscillator, a position detecting signal of the above mentioned photointerrupter is input into the above mentioned controlling circuit.

Ultrasonic wave diagnosing apparatus having an ultrasonic wave

An ultrasonic diagnosing apparatus having an ultrasonic observation system for observing an ultrasonic tomographic image of a portion of a body of patient and an optical observation system for observing an optical image of the portion, a direction indicator is superimposed on an ultrasonic tomographic image displayed on a monitor screen, and the direction indicator is rotated on the monitor screen in accordance with the rotation of the ultrasonic tomographic image. The ultrasonic diagnosing apparatus further has a system for compensating for a deviation between the ultrasonic tomographic image displayed on the monitor screen and the optical image due to a twist of a flexible shaft which is extended in an insertion section of the apparatus to rotate an ultrasonic vibrating element arranged in a distal end of the insertion section.

Ultrasonic diagnostic apparatus

A refrigeration cycle is a closed cycle constituted by a variable power compressor, a four-way valve, an indoor heat exchanger, an expansion valve and an outdoor heat exchanger. Air-conditioned air is supplied from the refrigeration cycle to a plurality of rooms to be subjected to air conditioning through a supply duct at a portion near a supply opening for supplying the air-conditioned air to a corresponding one of the rooms and controls a flow amount of the air-conditioned air supplied from the supply opening. Air is returned from each room to the refrigeration cycle through a return duct. The indoor heat exchanger of the refrigeration cycle has a temperature sensor for detecting the temperature of the indoor heat exchanger. A system controller controls a drive frequency of the variable power compressor of the refrigeration cycle in accordance with a difference between the temperature of the indoor heat exchanger detected by the temperature sensor and a preset temperature of the indoor heat exchanger.

Duct type air conditioner and method of controlling the same

In a probe for observing an ultrasonic image, which obtains the ultrasonic image of an object to be observed such as a body cavity by means of an ultrasonic transmitting and receiving means, a mechanical scanning operation of the ultrasonic transmitting and receiving means is performed by an ultrasonic driving means, and thus it is possible to obtain a good diagnosis image with no distortion and no flicker because noises of the driving means can be reduced. Therefore, an ultrasonic endoscope system and an ultrasonic video endoscope system etc. which utilize the probe mentioned above can display a good ultrasonic image and a good optical image.

Ultrasonic observation system and an ultrasonic endoscope system

An endoscope apparatus for inspecting an object including an insertion section insertable into the object and having a distal end and a proximal end, an image guide arranged within the insertion section and having entrance and exit ends arranged at the distal and proximal ends of insertion section, respectively, an objective lens system arranged at the distal end of insertion section for forming an optical image of the object onto the entrance end of image guide, an eyepiece lens system arranged at the proximal end of insertion section for projecting the optical image transmitted through the image guide onto an observating position, a first piezo-electric bimorph arranged at the distal end of insertion section for vibrating the entrance end of image guide in a direction perpendicular to a longitudinal axis of the insertion section over a given distance, a second piezo-electric element arranged at the proximal end of insertion section for vibrating the exit end of image guide in the same direction and over the same distance as those of the entrance end of image guide, so that annoying black mesh and Moire fringe are removed.

Growing community of inventors

Tokyo, Japan

Koichi Matsui