Colin Corporation

Tohru Oka

Hidekatsu Inukai

Takashi Nomura

Toshihiko Ogura

Hiroshi Sakai

Tomoko Ikawa

Hidenori Suzuki

Makoto Takakura

Chikao Harada

Akihiro Yokozeki

Hideichi Tsuda

An oscillometric automatic blood-pressure measuring apparatus, including an inflatable cuff which is adapted to be wound around a portion of a living subject, so as to detect respective amplitudes of a plurality of heartbeat-synchronous pulses of a cuff pulse wave as an oscillatory component that is produced in the cuff in synchronism with heartbeats of the subject in a cuff-pressure change process in which a cuff pressure as a pressure in the cuff is changed, a cuff-pulse-wave-amplitude correcting device for correcting the respective amplitudes of the respective pulses of the cuff pulse wave, according to a predetermined non-linear relationship between difference between cuff pressure and subject's mean blood pressure, and amplitude of cuff pulse wave, and a blood-pressure determining device for determining a blood pressure of the subject based on a change of the corrected amplitudes of the cuff pulse wave.

Oscillometric automatic blood-pressure measuring apparatus

An apparatus for monitoring a blood-pressure waveform representing a blood pressure of a living subject, including a cuff which is around a portion of the subject, a blood-pressure determining device which determines a blood pressure of the subject based on a signal obtained while a pressure in the cuff is changed, a blood-pressure-waveform detecting device which continuously detects the blood-pressure waveform, a display device which displays the blood-pressure waveform, a cuff-using-blood-pressure-measurement starting device for operating, when a prescribed blood-pressure-measurement-starting condition is satisfied, the blood-pressure determining device to determine the blood pressure of the subject, a pulse-wave detecting device which is adapted to be worn on a portion of the subject that is not located on a downstream side of the portion around which the cuff is wound, an estimated-blood-pressure-waveform determining device for continuously determining, based on the pulse wave detected by the pulse-wave detecting device, a estimated blood-pressure waveform representing an estimated blood pressure of the subject, according to a predetermined relationship between blood-pressure waveform and pulse wave, and a waveform-displaying control device for operating, when the blood-pressure waveform is not abnormal, the display device to display the blood-pressure waveform, and operating, when the blood-pressure waveform is abnormal, the display device to display the estimated blood-pressure waveform.

Blood-pressure-waveform monitoring apparatus

A continuous blood-pressure monitoring device apparatus including a cuff, a first determining device, a detecting device which detects a pressure pulse wave produced by an artery, a second determining device, a monitoring device, an information obtaining device a first change-value determining device, a second change-value determining device, and a relationship checking device.

Continuous blood-pressure monitoring apparatus

A heart-sound analyzing apparatus, including a heart-sound microphone which is adapted to be worn on a living subject to iteratively detect a second heart sound II of the subject, a respiration-synchronous-signal detecting device which iteratively detects a respiration-synchronous signal of the subject, an inspiration-expiration judging device for judging, based on each of the respiration-synchronous signals iteratively detected by the respiration-synchronous-signal detecting device, whether the subject is in an inspiring state or in an expiring state, and an aortic-valve-closing-timing determining device for iteratively determining a timing when the aortic valve of the heart of the subject closes, based on each of second heart sounds II which are iteratively detected by the heart-sound microphone in time intervals, respectively, in each of which the subject is judged as being in the inspiring state by the inspiration-expiration judging device.

Heart-sound analyzing apparatus

An apparatus for continuously monitoring a blood pressure of a subject, comprising a cuff; a device for determining a blood pressure of the subject based on a signal obtained while the cuff pressure is changed; a device for determining a relationship between blood pressure and pressure pulse wave, based on a determined blood pressure and a detected magnitude of a first-artery pressure pulse wave; a device for iteratively determining, according to the relationship, a monitor blood pressure based on a magnitude of each pulse of the first-artery pressure pulse wave; a sensor which detects a second-artery pressure pulse wave from a second artery and produces a pressure-pulse-wave signal representing the second-artery pressure pulse wave; a device for extracting, from the pressure-pulse-wave signal, a heart-sound component representing heart sounds; a device for iteratively obtaining a piece of pulse-wave-propagation-velocity-related information, based on a time of occurrence of a periodic point of a pulse of the heart-sound component and a time of occurrence of a periodic point of a corresponding pulse of the second-artery pressure pulse wave; a device for periodically determining a change value of the pieces of information; a device for periodically determining a change value of the monitor blood-pressure values; and a device for comparing the change value of the pieces of information and the change value of the monitor blood-pressure values, with each other, and thereby judging whether the relationship is appropriate.

An apparatus for measuring a propagation velocity of a pulse wave which is propagated through an artery of a living subject, the apparatus including an electrocardiographic-waveform detecting device which detects an electrocardiographic waveform from the subject, a pulse-wave sensor which is adapted to be worn on the subject and which detects the pulse wave from the subject, a time-difference determining device for determining a time difference between a first periodic point relating to the detected electrocardiographic waveform and a second periodic point relating to the detected pulse wave, and a propagation-velocity determining means for determining the propagation velocity of the pulse wave based on the determined time difference.

Apparatus for measuring pulse-wave propagation velocity

A blood-circulation monitor including a heartbeat-synchronous-wave sensor, a first judging device for judging whether an arrhythmia has occurred to a living subject, based on a heartbeat-synchronous wave detected by the sensor, a first determining device including a cuff and determining a first blood pressure of the subject based on a first pulse wave produced in the cuff, an information obtaining device for iteratively obtaining a piece of blood-pressure-relating information which changes in relation with blood pressure of the subject, a relationship determining device for determining a relationship between blood pressure and blood-pressure-relating information, a second determining device for iteratively determining, according to the relationship, a second blood pressure of the subject based on each of the pieces of blood-pressure-relating information, a calculating device for calculating a change value of the second blood pressure values, and a second judging device for judging that the condition of blood circulation of the subject is abnormal, when the first judging device judges that the arrhythmia has occurred to the subject and when the change value does not fall within a reference range.

Circulation-condition monitoring apparatus

An apparatus for evaluating a degree of recovery of a living subject from a surgical operation which the subject has undergone, the apparatus including a circulatory-organ-relating-information obtaining device for iteratively obtaining, after the operation, a piece of circulatory-organ-relating information relating to a circulatory organ of the subject, and a recovery-degree evaluating device for evaluating the degree of recovery of the subject, based on at least one piece of circulatory-organ-relating information obtained by the circulatory-organ-relating-information obtaining device.

Postoperative-condition evaluating apparatus

An apparatus for iteratively measuring a blood pressure of a living subject who is undergoing a blood-dialysis treatment, including an inflatable cuff which applies a pressing force to a body portion of the subject, a blood-pressure measuring device which measures a blood pressure of the subject by changing the pressing force of the cuff, a starting device for starting the blood-pressure measuring device at a predetermined period in the dialysis duration, so that the blood-pressure measuring device iteratively measures a blood pressure of the subject at the predetermined period, a period memory device which stores, for a plurality of living subjects including the subject, a plurality of sets of predetermined periods each set of which includes respective predetermined periods for a plurality of partial durations of the dialysis duration, an identifying device for identifying the subject, and a selecting device for selecting, from the sets of predetermined periods stored in the period memory device.

Blood-pressure measuring apparatus for patient under blood-dialysis treatment

A physical information monitor system comprising: (a) physical information obtaining means for successively obtaining physical information values of a living subject; (b) moving average calculating means for continuously calculating a moving average of the physical information values successively obtained by the physical information obtaining means; (c) reference range determining means for determining a reference range on the basis of the moving average calculated by the moving average calculating means; and (d) abnormality determining means for determining whether one of the physical information values which is currently obtained by the physical information obtaining means is abnormal, the abnormality determining means generating an abnormality signal when the currently obtained physical information value is outside the reference range.

Physical information monitor system having means for determining

A physical information monitor system, including: (a) physical information obtaining component for successively obtaining physical information of a living subject; (b) physical information memory component for storing the physical information which is previously obtained in a comparatively normal condition of the living subject; (c) abnormality determining component for determining that the physical information obtained by the physical information obtaining component is abnormal if the physical information is outside a predetermined reference range; (d) a display device for indicating the physical information obtained by the physical information obtaining component; and (e) indication control component for controlling the display device to indicate, in a same indication area of the display device, the physical information which has been determined to be abnormal by the abnormality determining component and the physical information previously obtained in the comparatively normal condition of the subject and stored by the physical information memory component.

Physical information monitor system having means for indicating amount

A physical-information-image displaying apparatus for use with an endoscope including an image pick-up which picks up an endoscopic image from a living subject and produces an endoscopic-image signal representing the picked-up endoscopic image, and a display which displays the picked-up endoscopic image represented by the endoscopic-image signal, the apparatus including a physical-information obtaining device which obtains a physical information from the subject and produces a physical-information signal representing the obtained physical information, a physical-information-image-signal producing device which produces, based on the physical-information signal produced by the physical-information obtaining device, a physical-information-image signal representing a physical-information image corresponding to the obtained physical information, and a superimposing device which superimposes the physical-information-image signal produced by the physical-information-image-signal producing device, on the endoscopic-image signal produced by the image pick-up of the endoscope, so that the physical-information image represented by the physical-information-image signal is superimposed on the picked-up endoscopic image represented by the endoscopic-image signal, on the display of the endoscope.

Physical-information-image displaying apparatus

An apparatus for informing an operator of an abnormality of a physical information obtained from a living subject, including a physical-information obtaining device which obtains the physical information from the subject via an endoscope and outputs a physical-information signal representing the obtained physical information, a signal converting device which converts the physical-information signal into an analog speech signal having a waveform representing a speech corresponding to the obtained physical information, a speech outputting device which outputs the speech represented by the speech signal, a judging device for judging whether the obtained physical information represented by the physical-information signal is abnormal, and a frequency shifting device which shifts, when the judging means makes a positive judgment, frequencies of the speech output by the speech outputting device, so that the operator is informed of the abnormality of the physical information obtained from the subject.

Growing community of inventors

Ichinomiya, Japan

Tohru Oka