Abstract: 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.

Abstract: A blood purification instrument for extracorporeally circulating a patient's blood and a concentration detector detects a concentration of liquid during blood purification wherein the concentration detector has a light emitter irradiating light onto the liquid, a light receiver receives the light as transmitted through the liquid, a reference light receiver receives reference light branched from the light emitter without transmission through the liquid, and a detector detecting the light intensity respectively of the transmitted light and the reference light received by the light receiver and the reference light receiver, respectively.

Abstract: 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.

Abstract: A blood purification instrument for extracorporeally circulating a patient's blood and a concentration detector detects a concentration of liquid during blood purification wherein the concentration detector has a light emitter irradiating light onto the liquid, a light receiver receives the light as transmitted through the liquid, a reference light receiver receives reference light branched from the light emitter without transmission through the liquid, and a detector detecting the light intensity respectively of the transmitted light and the reference light received by the light receiver and the reference light receiver, respectively.

Abstract: A blood purification device allows controlling a false alarm and allows detecting accurately an abnormality in a patient who is undergoing a blood purification treatment or in the device which is running. The hemodialysis equipment includes blood circuit made of an arterial blood circuit having an arterial needle at its end and a venous blood circuit having a venous needle at its end; a blood pump; a dialyzer purifying the blood flowing in blood circuit; a venous blood pressure sensor which can detect pressure of a patient's blood flowing in the venous blood circuit; a venous blood pressure monitoring means for comparing a base value of the pressure measured by the venous blood pressure sensor or pressure predicted to be measured with a predetermined alarm-threshold. The device also has a venous blood pressure monitoring means allows updating the predetermined alarm threshold at a predetermined period of time.

Abstract: A hemodialysis device includes a hemodialysis device main body including an arterial blood circuit, venous blood circuit, blood pump, dialyzer, dialysate inlet and outlet lines, voltage adding device, electric potential measuring device, and monitoring device monitoring the needle when it is detached from the patient based on an electric potential measured by the electric potential measuring device. One electrode of the voltage adding device is attached between an arterial blood needle in the arterial blood circuit and the pump, and another electrode is attached to the dialysate outlet line. The hemodialysis device allows the precise detection of a needle that is detached from a patient taking a blood hemodialysis treatment by monitoring a voltage difference at a predetermined position while providing voltage to the blood flowing in the blood circuit. The device also allows the suppression of an increase in production cost for a disposable blood circuit.

Abstract: A hemodialysis device includes a hemodialysis device main body including an arterial blood circuit, venous blood circuit, blood pump, dialyzer, dialysate inlet and outlet lines, voltage adding means, electric potential measuring means, and monitoring means monitoring the needle when it is detached from the patient based on an electric potential measured by the electric potential measuring means. One electrode of the voltage adding means is attached between an arterial blood needle in the arterial blood circuit and the pump, and another electrode is attached to the dialysate outlet line. The hemodialysis device allows the precise detection of a needle that is detached from a patient taking a blood hemodialysis treatment by monitoring a voltage difference at a predetermined position while providing voltage to the blood flowing in the blood circuit. The device also allows the suppression of an increase in production cost for a disposable blood circuit.

Abstract: A blood purification device allows controlling a false alarm and allows detecting accurately an abnormality in a patient who is undergoing a blood purification treatment or in the device which is running. The hemodialysis equipment includes blood circuit made of an arterial blood circuit having an arterial needle at its end and a venous blood circuit having a venous needle at its end; a blood pump; a dialyzer purifying the blood flowing in blood circuit; a venous blood pressure sensor which can detect pressure of a patient's blood flowing in the venous blood circuit; a venous blood pressure monitoring means for comparing a base value of the pressure measured by the venous blood pressure sensor or pressure predicted to be measured with a predetermined alarm-threshold. The device also has a venous blood pressure monitoring means allows updating the predetermined alarm threshold at a predetermined period of time.

Abstract: The invention provides an anesthesia monitor being able to directly make a separation and a determination in real time all components of a gas in which components having the same integer molecular weight exists, more particularly an expiration gas and an inspiration gas as the object of analysis. The monitor has a small size, a low price and a operational facility. A microscopic quantity of the expiration gas is introduced from a circular route of an anesthesia circuit for an inhalation anesthesia to the anesthesia monitor through a material pipe-line. A gas portion is transmitted by a rotary pump through valves and opening and closing valves to a measurement cell within a vacuum chamber arranged in a gap of between magnetic poles of permanent magnets in a Fourier transformation mass analyzer so that the expiration gas is subjected to a high speed sampling. An ionization of the ions is carried out within the measurement cell.

Abstract: The present invention relates to a Fourier transform mass spectrometer suitable for analysis of a particular component of a sample gas made of known components, which is adapted so as to prevent the high-frequency electric field applied to the high vacuum cell from deviating due to a variation in the long cycle of the static magnetic field applied to the high vacuum cell, which is characterized in that the variation in the long cycle of the magnetic field applied is detected as a deviation in the ion cyclotron resonance frequency of the particular component and the high frequency for forming the high-frequency electric field is made variable in accordance with the variation in the ion cyclotron resonance frequency.