Abstract: An apparatus for automatically measuring a blood pressure of a living subject, including an inflatable cuff which is adapted to be wound around a portion of the subject, an increase-end-pressure determining device for determining, based on a cuff pulse wave occurring to the cuff when a pressure in the cuff is increased at a first rate, an increase-end pressure to which the pressure of the cuff is increased at the first rate, at which the increasing of the pressure of the cuff is ended, and from which the pressure of the cuff is decreased at a second rate lower than the first rate, and a blood-pressure determining device for determining a blood pressure of the subject based on a physical signal obtained from the subject when the pressure of the cuff is decreased at the second rate from the increase-end pressure.

Abstract: An apparatus for automatically measuring a blood pressure of a living subject, including an inflatable cuff which is wound around a portion of the subject, a cuff pulse wave including heartbeat-synchronous pulses occurring to the cuff when a pressure in the cuff is changed, a pressure-pulse-wave detecting device which includes a pressure-pulse-wave sensor that is pressed against an artery of the subject and which detects, through the sensor, a pressure pulse wave that is produced by the artery when the pressure of the cuff is changed and that includes heartbeat-synchronous pulses, a correction-factor determining device for determining, for each of the heartbeat-synchronous pulses of the pressure pulse wave, a correction factor to correct an amplitude of each heartbeat-synchronous pulse to a predetermined value, a corrected-cuff-pulse-wave-amplitude determining device for multiplying, by the correction factor determined for each of the heartbeat-synchronous pulses of the pressure pulse wave, an amplitude of on

Abstract: A blood-pressure monitor, including a blood-pressure measuring device including a cuff, an information obtaining device which iteratively obtains, from a living subject, physical information which changes with change of blood pressure of the subject, a measurement starting device for starting a measurement of the blood-pressure measuring device, when a subsequent piece of information obtained by the obtaining device after the measuring device has measured a last blood pressure of the subject in a last measurement thereof has been deviated by not less than a predetermined amount from an initial piece of information obtained by the obtaining device when the measuring device measured the last blood pressure of the subject, a display device which displays a graph representing the pieces of information obtained by the obtaining device, and a control device which controls the display device to display the graph representing the initial piece of information and each one of subsequent pieces of information iterativel

Abstract: A blood pressure monitor including a cuff, a pressure sensor which detects a pressure in the cuff, a pressure regulating device which increases the pressure of the cuff, a pulse-amplitude determining device for determining an amplitude of each of pulses of a pulse wave which are produced in the cuff and detected by the pressure sensor while the cuff pressure is increased, a candidate determining device for determining, as a diastolic BP candidate, a pressure of the cuff which is detected by the pressure sensor and which corresponds to an amplitude of a first pulse of the pulses determined by the pulse-amplitude determining device, by judging whether the amplitude of the first pulse is not greater than a reference value which is smaller than an amplitude of at least one second pulse of the pulses, by a predetermined proportion of the amplitude of the second pulse, the amplitude of the second pulse being determined by the pulse-amplitude determining device after the amplitude of the first pulse is determined, a

Abstract: A blood pressure monitor including a cuff, a pressure sensor which detects a pressure in the cuff, a pressure regulating device which increases the pressure of the cuff, a pulse-amplitude determining device for determining an amplitude of each of pulses of a pulse wave which are produced in the cuff and detected by the pressure sensor while the cuff pressure is increased, a candidate determining device for determining, as a diastolic BP candidate, a pressure of the cuff which is detected by the pressure sensor and which corresponds to an amplitude of a first pulse of the pulses determined by the pulse-amplitude determining device, by judging whether the amplitude of the first pulse is not greater than a reference value which is smaller than an amplitude of at least one second pulse of the pulses, by a predetermined proportion of the amplitude of the second pulse, the amplitude of the second pulse being determined by the pulse-amplitude determining device after the amplitude of the first pulse is determined, a

Abstract: A blood pressure measuring apparatus including an inflatable cuff which is adapted to be wound around a body portion of a living subject, an air pump which supplies a pressurized air to the cuff to inflate the cuff and thereby increase an air pressure in the cuff, so that the cuff presses the body portion of the subject, an air tank which is connected to the air pump, an air restrictor which is provided between the air tank and the cuff, a deflation-control valve which is provided between the restrictor and the cuff to control an amount of discharging of the pressurized air from the cuff and thereby control deflation of the cuff, a control device which controls the air pump to supply the pressurized air to the cuff while controlling the deflation-control valve to discharge a controlled amount of the pressurized air therethrough from the cuff, so as to increase the pressure of the cuff linearly at a predetermined first rate, and a measuring device which measures at least one blood pressure value of the subject

Abstract: An apparatus for successively estimating an intraarterial blood pressure of a living subject, based on information non-invasively obtained from a circulatory organ of the subject, including: a first device for non-invasively obtaining, from the circulatory organ of the subject, first information which relates to velocity of propagation of a pulse wave which propagates through an artery of the subject; a second device for non-invasively obtaining, from the circulatory organ of the subject, at least one of second information which relates to heart rate of the subject and third information which relates to an area defined by a volume pulse wave from a peripheral portion of the subject; and a third device for estimating, according to a predetermined relationship between (A) blood pressure, and (B1) first information and (B2) at least one of (B21) second information and (B22) third information, the intraarterial blood pressure of the subject, based on the first information obtained by the first device and the at l

Abstract: An apparatus for estimating an intraarterial blood pressure of a living subject, based on information non-invasively obtained from a circulatory organ of the subject, including: a first device for obtaining first information which relates to velocity of propagation of a pulse wave; a second device for obtaining at least one of second information which relates to heart rate and third information which relates to an area defined by a volume pulse wave; a third device for estimating, according to a predetermined relationship to between (A) blood pressure, and (B1) first information and (B2) at least one of (B21) second information and (B22) third information, the blood pressure, based on the first information and the at least one of the second information and the third information, the predetermined relationship being defined by a numerical expression including a plurality of predetermined coefficients; and a fourth device for selecting, from a plurality of groups of predetermined coefficients which correspond t

Abstract: An apparatus for estimating an intraarterial blood pressure of a living subject, based on information of the subject, including: a first device for obtaining first information which relates to velocity of propagation of a pulse wave; a second device for obtaining at least one of second information which relates to heart rate and third information which relates to an area defined by a volume pulse wave; a third device for estimating, according to a predetermined relationship between (A) blood pressure, and (B1) first information and (B2) at least one of (B21) second information and (B22) third information, the blood pressure of the subject, based on the first information and the at least one of the second and the third information, the relationship being defined by a numerical expression including a plurality of coefficients; a fourth device for determining an activity of an autonomic nerve system, based on at least one of fourth information which relates to fluctuations of the blood pressure and fifth informa

Abstract: A blood pressure monitor including a cuff, a pressure sensor which detects a pressure in the cuff, a pressure regulating device which increases the pressure of the cuff, a pulse-amplitude determining device for determining an amplitude of each of pulses of a pulse wave which are produced in the cuff and detected by the pressure sensor while the cuff pressure is increased, a candidate determining device for determining, as a diastolic BP candidate, a pressure of the cuff which is detected by the pressure sensor and which corresponds to an amplitude of a first pulse of the pulses determined by the pulse-amplitude determining device, by judging whether the amplitude of the first pulse is not greater than a reference value which is smaller than an amplitude of at least one second pulse of the pulses, by a predetermined proportion of the amplitude of the second pulse, the amplitude of the second pulse being determined by the pulse-amplitude determining device after the amplitude of the first pulse is determined, a

Abstract: A blood pressure monitor including a cuff, a pressure sensor which detects a pressure in the cuff, a pressure regulating device which increases the pressure of the cuff, a pulse-amplitude determining device for determining an amplitude of each of pulses of a pulse wave which are produced in the cuff and detected by the pressure sensor while the cuff pressure is increased, a candidate determining device for determining, as a diastolic BP candidate, a pressure of the cuff which is detected by the pressure sensor and which corresponds to an amplitude of a first pulse of the pulses determined by the pulse-amplitude determining device, by judging whether the amplitude of the first pulse is not greater than a reference value which is smaller than an amplitude of at least one second pulse of the pulses, by a predetermined proportion of the amplitude of the second pulse, the amplitude of the second pulse being determined by the pulse-amplitude determining device after the amplitude of the first pulse is determined, a

Abstract: A blood pressure measuring apparatus comprises an inflatable cuff which is adapted to be wound around a body portion of a living subject, an air pump which supplies a pressurized air to the cuff to inflate the cuff and thereby increase an air pressure in the cuff, to press a body portion of the subject, a pump-output-power control device which controls an output power of the air pump to increase an air pressure in the pump to a predetermined target pressure value, a pressure sensor that detects the pressure of the cuff, first-pump-output setting means for setting a predetermined first pump output power, a timer which measures a basic time period needed to increase the pressure in the cuff, second-pump-output power determining means for determining a second pump output power corresponding to a predetermined pressure-increase rate of the cuff, a cuff pressure decreasing device that decreases the pressure of the cuff, and a measuring device which measures at least one blood pressure value of the living subject w

Abstract: A method and apparatus for winding a cuff having an inflatable chamber around a body portion of a living subject, in measuring a blood pressure of the subject, the method including the steps of positioning the cuff and the body portion of the subject relative to each other such that the cuff surrounds the body portion, supplying a predetermined amount of gas into the chamber of the cuff to hold the gas in the chamber, and fastening the cuff after increasing a tension of the cuff till a gas pressure in the chamber of the cuff surrounding the body portion reaches a reference value.

Abstract: An oscillometric blood pressure measuring apparatus, including an inflatable cuff adapted to be wound around a body portion of a living subject, an oscillometric blood pressure measuring device which supplies a fluid pressure to the cuff to press the body portion of the subject, detects variation of a plurality of pulse amplitudes of a pulse wave which is produced in the cuff in synchronism with heartbeat of the subject while the fluid pressure of the cuff is changed, and determines a blood pressure of the subject based on the variation of the pulse amplitudes, a cuff pulse-wave detecting device which detects a pulse wave which is produced in the cuff when the fluid pressure of the cuff takes a reference pressure value not higher than a mean blood pressure of the subject, and produces a pulse wave signal representative of the detected pulse wave, and a waveform storing device including a waveform memory, for storing a waveform of a pulse wave of the subject by utilizing the pulse wave signal produced by the c