Nikkiso Company Limited

Pioneer Corporation

Air Water Biodesign Inc.

Tomoya Murakami

Masahiro Toyoda

Akari Agata

Genki Adachi

Kiyoshi Tateishi

Kunihiko Akita

Wataru Onodera

Atsuya Ito

Hitoshi Goto

Tadashi Kondo

Mitsuru Sato

Shinya Hasegawa

Yoshihiro Mori

Yasushi Takakuwa

Satoru Kawarabayashi

Takayuki Hirano

Shigeaki Funamura

Ikuya Kikuchi

Ryohei Kagawa

Masatoshi Tarumi

An optical measurement device is provided with: a light source that irradiates, with light, a measurement object which has a fluid flowing thereinside; a light receiving unit which, upon receipt of scattered light from the measurement object irradiated with light, outputs a light reception signal according to the intensity of the scattered light; a disturbance generation unit which generates a disturbance signal for causing oscillation of a drive current to be supplied to the light source; and an adjustment unit which adjust the drive current on the basis of the result of a comparison between the disturbance signal and a signal generated on the basis of the light reception signal.

Optical measurement apparatus, optical measurement method, computer program, and recording medium

This fluid evaluation device is provided with an irradiation unit for irradiating a fluid with light, a light reception unit for receiving scattered light from the fluid and outputting a light reception signal, and an estimation unit for estimating at least one from among flow rate and density by mapping input points, which are on a first plane defined by flow rate and frequency and are expressed by light amount information indicating the amount of scattered light included in the light reception signal and frequency information indicating a frequency for a beat signal resulting from the Doppler shifting of the light included in the light reception signal, onto a second plane defined by fluid flow rate and fluid density.

Fluid evaluation apparatus and method, computer program, and recording medium

This fluid measuring device is provided with: an irradiation unit that irradiates a fluid with light; a light receiving unit that receives light scattered by the fluid; a detecting unit that detects a backflow of the fluid on the basis of a light reception signal from the light receiving unit; and a calculating unit that calculates, on the basis of the detection result by the detection unit and the light reception signal from the light receiving unit, estimated fluid information indicating the flow rate or flow speed of the fluid. Accordingly, even when a backflow of the fluid temporarily occurs, the flow speed of the fluid can be precisely measured.

Fluid measuring device

This temperature control device is provided with: an endothermic/exothermic unit that heats or cools a subject to be subjected to temperature control; a temperature detection unit that detects the first temperature of the periphery of the subject; a control unit that controls the endothermic/exothermic unit on the basis of a variable target temperature; and a variable target temperature setter that sets the variable target temperature to a first variable target temperature on the basis of the first temperature and target temperature information indicating the target temperature. With such temperature control device, since the target temperature changes to a suitable value as needed, a time needed until the temperature of the subject reaches the target temperature can be shortened.

Temperature control apparatus, temperature control method, computer program, and recording medium

A blood purification apparatus is provided that is capable of detecting an abnormal state of puncture into a blood vessel with an arterial puncture needle or a venous puncture needle. The blood purification apparatus includes an oscillating device capable of supplying an alternating current at a predetermined frequency and changing the frequency of the alternating current among a plurality of frequencies, a measuring device capable of measuring an impedance for each of the frequencies, a calculating device capable of acquiring an impedance frequency characteristic, a storage device capable of storing an impedance frequency characteristic acquired in a case of normal puncture into the patient's blood vessel with an arterial puncture needle and a venous puncture needle, and an identifying device capable of identifying whether the puncture into the blood vessel with the arterial puncture needle a or the venous puncture needle b is normal in accordance with the change observed between the impedance frequency characteristic acquired by the calculating device and the impedance frequency characteristic stored in the storage device.

Blood purification apparatus

A blood purification apparatus with a blood circuit that allows a patient's blood to extracorporeally circulate and a blood purifier connected to the blood circuit and that purifies the blood in extracorporeal circulation are attachable, the blood purification apparatus including a dialysate introduction line through which dialysate is introduced into the blood purifier; a dialysate drain line through which waste dialysate resulting from blood purification performed by the blood purifier is drained from the blood purifier; and a concentration-detecting unit that detects a concentration of a predetermined substance in the waste dialysate flowing through the dialysate drain line. The blood purification apparatus includes a control unit that establishes a state of equilibrium where the concentration of the predetermined substance in the waste dialysate flowing through the dialysate drain line and a concentration of the predetermined substance in the blood flowing through the blood circuit are equal or approximate to each other; a storage unit that stores a value detected by the concentration-detecting unit in the state of equilibrium as an equilibrium value; and a clear-space-calculating unit that calculates clear space in accordance with the value detected by the concentration-detecting unit and the equilibrium value stored in the storage unit, the clear space being an index representing a volume of purification of a patient achieved by blood purification treatment.

A fluid measuring apparatus is provided with: an irradiating device configured to irradiate a fluid with light; a light receiving device configured to receive light scattered by the fluid; a detecting device configured to detect a backflow of the fluid on the basis of a received light signal of the light receiving device; and a calculating device configured to calculate estimated concentration information indicating a concentration of the fluid, on the basis of a detection result of the detecting device and the received light signal of the light receiving device. By this, even if the backflow temporarily occurs in the fluid, the fluid concentration can be accurately measured.

Fluid measuring apparatus

A measuring apparatus is provided with: an irradiator configured to irradiate fluid with light; a first light receiver configured to receive a forward scatter component of scattered light scattered by the fluid; a second light receiver configured to receive a backscatter component of the scattered light; a third light receiver configured to receive a side scatter component of the scattered light; and an outputting device configured to output fluid information about the fluid, which is obtained on the basis of light receiving signals of the first light receiver, the second light receiver, and the third light receiver. According to this measuring apparatus, it is possible to output accurate fluid information because of the use of the forward scatter component, the backscatter component, and the side scatter component of the scattered light.

Apparatus and method for measuring fluid information from light scattering

A blood purification apparatus to which a blood circuit that allows a patient's blood to extracorporeally circulate and a blood purifier connected to the blood circuit and that purifies the blood in extracorporeal circulation are attachable, the blood purification apparatus including a dialysate introduction line through which dialysate is introduced into the blood purifier; a dialysate drain line through which waste dialysate resulting from blood purification performed by the blood purifier is drained from the blood purifier; and a concentration-detecting unit that detects a concentration of a predetermined substance in the waste dialysate resulting from the blood purification by the blood purifier and flowing through the dialysate drain line. The blood purification apparatus includes a control unit that establishes a state of equilibrium where the concentration of the predetermined substance in the waste dialysate flowing through the dialysate drain line and a concentration of the predetermined substance in the blood flowing through the blood circuit are equal or approximate to each other; a storage unit storing a value detected by the concentration-detecting unit in the state of equilibrium as an equilibrium value; and a clearance-calculating unit that calculates clearance in accordance with the value detected by the concentration-detecting unit and the equilibrium value stored in the storage unit, the clearance being a figure of merit representing a degree of solute removal by the blood purifier.

Provided is a blood purification apparatus which can continue to accurately monitor a blood purification treatment state even if treatment conditions are changed during blood purification treatment. The blood purification apparatus can perform real-time monitoring on the blood purification treatment state, based on a concentration change in a discharge solution which is obtained by an arithmetic device. The blood purification apparatus includes a treatment condition change device that sets or changes treatment conditions as requested, and that causes a discharge solution concentration sensor to previously detect concentration of the discharge solution under the respective treatment conditions, and a storage device that stores the concentration of the discharge solution under the respective treatment conditions which is detected by the discharge solution concentration sensor in the treatment condition change device, as a first predetermined value corresponding to the respective treatment conditions. When the treatment conditions are changed during blood purification treatment, the arithmetic device obtains the concentration change in the discharge solution, based on the first predetermined value corresponding to the changed treatment conditions among the first predetermined values stored in the storage device.

An information processing device is provided with: a first processing unit that generates first information by performing first processing with respect to sensor information acquired from a sensor; a second processing unit that generates second information by performing, with respect to the first information, second processing that is different from the first processing; and a third processing unit, which generates third information by performing, with respect to the first information, third processing, i.e., processing that corresponds to at least a part of the second processing, and which acquires the second information, and outputs the second information and the third information.

Information processing with failure detection, apparatus and method

A medical apparatus in which the measurement of an electrocardiogram and the detection of blood leakage that may occur if an accessing unit comes off the patient can be performed accurately without fail, and with which the efficiency in the operation to be performed before the treatment can be improved. A medical apparatus includes a blood purification device including an accessing unit formed of a venous puncture needle stickable into a patient, electrocardiogram-measuring devices closely attached to a skin of the patient and being capable of measuring an electrocardiogram of the patient, and a blood-leakage-detecting device attached to a position near the accessing unit and being capable of detecting blood of the patient that may leak from the accessing unit. The medical apparatus further includes an integrated detecting device provided as a unit including the electrocardiogram-measuring device and the blood-leakage-detecting device.

Medical apparatus

These measurement devices are each provided with: irradiation unit that irradiate a fluid with light; a light-receiving unit that receives light scattered by the fluid; an acquiring unit that acquires fluid information which indicates the flow rate or the flow velocity of the fluid; and a control unit that controls the irradiation unit on the basis of the fluid information.

Measuring apparatus

A blood purification system that is capable of notifying any changes in the patient's condition on the basis of noninvasive vital sings of the patient that are observed during the blood purification treatment. An external information-processing apparatus includes an external input device into which a vital sign detected by a detecting device is inputtable in real time; a checking device capable of checking whether or not the vital sign inputted in real time into the external input device satisfies a predetermined condition; and an external output device capable of outputting, if it is determined by the checking device that the vital sign satisfies the predetermined condition, a result of the checking or checked information including the vital sign leading to the result of the checking to a blood purification apparatus. The checked information outputted from the external output device is displayable on a display included in the blood purification apparatus.

Blood purification system

A blood purification apparatus includes a blood purification instrument for extracorporeally circulating blood of a patient and a concentration detector detecting a concentration of liquid flowing during blood purification. The concentration detector has a light emitter irradiating light onto said liquid, a light receiver receiving light from the light emitter transmitted through said liquid, and a detector detecting the received light intensity received by the light receiver. The concentration detector detects the concentration of the liquid based on the received light intensity and can be calibrated by adjusting an amount of irradiation by the light emitter so that the received light intensity has a predetermined value.

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Shizuoka, Japan

Tomoya Murakami