Patent application number | Description | Published |
20090137912 | Blood Pressure Measurement Apparatus - A blood pressure measurement apparatus includes: a detector, operable to detect a first pulse, a second pulse prior to the first pulse and a third pulse prior to the second pulse under the same pressure; a first distinguisher, operable to distinguish whether waveforms of the first and second pulses are substantially identical with each other; a second distinguisher, when the waveforms are not substantially identical with each other, operable to distinguish whether parameters of the first, second and third pulses meet a condition corresponding to arrhythmia; a determiner, operable to determine the first and second pulses to be pulse waves when the waveforms are substantially identical with each other, and operable to determine the first, second and third pulses to be pulse waves when the parameters meet the condition; and a calculator, operable to calculate a blood pressure value based on the pulse waves. | 05-28-2009 |
20140213865 | BIOLOGICAL SIGNAL MEASURING SYSTEM AND BIOLOGICAL SIGNAL MEASURING APPARATUS - A biological signal measuring system includes: a light emitter emitting a first light beam and a second light beam; a light receiver outputting first and second signals in accordance with light intensities of the first and second light beams that have been passed through or reflected from a living tissue of a subject; a first calculating section acquiring a light attenuation of the first light beam based on the first signal and a light attenuation of the second light beam based on the second signal; a second calculating section acquiring a blood-derived light attenuation based on the light attenuation of the first and second light beams; a third calculating section acquiring information relating to a blood oxygen saturation based on a change amount of the blood-derived light attenuation associated with pressurization of the living tissue; and an outputting section outputting the acquired information. | 07-31-2014 |
20140213884 | BIOLOGICAL SIGNAL MEASURING SYSTEM AND BIOLOGICAL SIGNAL MEASURING APPARATUS - A biological signal measuring system includes: a light emitter emitting a first light beam and a second light beam; a light receiver outputting first and second signals in accordance with light intensities of the first and second light beams that have been passed through or reflected from a living tissue of a subject; a first calculating section acquiring a light attenuation of the first and second light beams based on the first and second signals; a second calculating section acquiring a blood-derived light attenuation based on the light attenuation of the first and second light beams; a third calculating section identifying a blood fill time for filling the living tissue, based on a temporal change of the blood-derived light attenuation associated with pressurization of the living tissue; and an outputting section outputting the identified blood fill time. | 07-31-2014 |
20140371557 | BIOLOGICAL SIGNAL MEASURING SYSTEM AND BIOLOGICAL SIGNAL MEASURING APPARATUS - A biological signal measuring system includes: a light emitter emitting light beams having different N kinds of wavelengths, where N is an integer of four or more; a light receiver outputting N kinds of signals respectively in accordance with received light intensities of the N kinds of light beams that have been passed through or reflected from a living tissue; a first calculating section acquiring N kinds of light attenuations based on the N kinds of signals; a second calculating section acquiring (N−1) kinds of blood-derived light attenuations based on two light attenuations related to (N−1) kinds of combinations selected from the N kinds of light attenuations; a third calculating section identifying concentrations of (N−1) kinds of in-blood substances based on the (N−1) kinds of blood-derived light attenuations; and an outputting section outputting the identified concentrations. | 12-18-2014 |
20160089036 | SENSOR AND BIOLOGICAL SIGNAL MEASURING SYSTEM - A biological signal measuring system includes a sensor and a biological signal measuring apparatus configured to calculate a blood refill time of a living tissue of a subject. The sensor includes a pressure applying portion configured to apply pressure on the living tissue, a light emitter configured to emit light toward the living tissue, a light receiver configured to receive reflected light or transmitted light from the living tissue, a first light transmitting member made of a light transmitting material and having one side contacting the light emitter and the other side arranged to contact the subject, a second light transmitting member made of a light transmitting material and having one side contacting the light receiver and the other side arranged to contact the subject, and a light blocking member configured to block light between the light emitter and the light receiver. | 03-31-2016 |
20160128634 | MEASURING SYSTEM AND METHOD FOR EVALUATING CONDITION OF PATIENT - A measuring system includes a first sensor, a second sensor, a first measurement value calculator that, based on a change of an amount of received light that is measured by the first sensor, calculates a first measurement value indicating an index related to a blood oxygen saturation or a blood refill time, a second measurement value calculator that, based on a change of an amount of received light that is measured by the second sensor, calculates a second measurement value indicating an index related to a blood oxygen saturation or a blood refill time, and a pressure controller that controls the first sensor and the second sensor so that a time difference between a start of compression release by the first sensor and a start of compression release by the second sensor is within a predetermined time period. | 05-12-2016 |