Physical information monitor system having means for indicating amount of deviation of monitored information from normal information

• US 5,830,149 A
• Filed: 09/19/1996
• Issued: 11/03/1998
• Est. Priority Date: 03/27/1995
• Status: Expired due to Fees

• Current Assignee: Omron Healthcare Company Limited (Omron Corporation)
• Original Assignee: Colin Corporation (Fukuda Denshi Company Limited)
• Inventors: Takakura, Makoto, Oka, Tohru
• Primary Examiner(s): Bahr, Jennifer
• Assistant Examiner(s): YARNELL, BRYAN KEITH
• Application Number:
  US08/715,898
• Time in Patent Office: 775 Days
• Field of Search: 128/630, 128/666, 128/667, 128/668, 128/670, 128/672, 128/677-682, 128/687, 128/688, 600/300, 600/479, 600/480, 600/481, 600/483, 600/485, 600/490-495, 600/500, 600/501
• US Class Current: 600/500
• CPC Class Codes: A61B 5/02116 of pulse wave amplitude A61B5/02225 takes precedence
• CPC Class Codes: A61B 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers

Abstract

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.

Claims

1. A physical information monitor system, comprising:

physical information obtaining means for successively obtaining physical information of a living subject, said physical information obtaining means obtaining as said physical information a series of pulses of a pulse wave generated in synchronism with heartbeat of said subject;

physical information memory means for storing said physical information which is previously obtained in a comparatively normal condition of said living subject;

abnormality determining means for determining that said physical information obtained by said physical information obtaining means is abnormal when said physical information is outside a predetermined reference range;

a display device for indicating said physical information obtained by said physical information obtaining means; and

indication control means for controlling said display device to simultaneously indicate, while the physical information is abnormal, in a same indication area of said display device, said physical information which has been determined to be abnormal by said abnormality determining means and said physical information previously obtained in said comparatively normal condition of said subject and stored by said physical information memory means, said indication control means controlling said display device to indicate, in a same two-dimensional coordinate system, a waveform of one of a series of pulses of a normal pulse wave previously obtained in a comparatively normal condition of said subject and a waveform of one of a series of pulses of the pulse wave obtained by said physical information obtaining means in an abnormal condition of said subject, such that phases of said waveforms of said normal pulse wave and said abnormal pulse wave coincide with each other, in said same two-dimensional coordinate system in which time is taken along an abscissa while an amplitude of said series of pulses is taken along an ordinate, said indication control means including normalizing means for normalizing said waveforms of said normal pulse wave and said abnormal pulse wave, such that at least one of an amplitude and a wavelength of said abnormal pulse wave coincides with the corresponding one of the amplitude and wavelength of said normal pulse wave, said indication control means controlling said display device to indicate the waveforms of said normal pulse wave and said abnormal pulse wave which have been normalized by said normalizing means, such that said waveforms of said normal pulse wave and said abnormal pulse wave are superimposed on each other, said indication control means including calculating means for calculating an area difference index which quantitatively indicates a difference between an area defined by said waveform of said normal pulse wave and an area defined by said waveform of said abnormal pulse wave, said indication control means controlling said display device to indicate said area difference index calculated by said calculating means.

2. A physical information monitor system according to claim 1, wherein said physical information obtaining means obtains as said physical information a series of pulses of a pulse wave generated in synchronism with heartbeat of said subject, while said indication control means controls said display device to indicate a series of pulses of a normal pulse wave previously obtained in the comparatively normal condition of said subject and said series of pulses of the pulse wave obtained by said physical information obtaining means in an abnormal condition of said subject, in a same two-dimensional coordinate system in which time is taken along an abscissa while an amplitude of said series of pulses is taken along an ordinate.

3. A physical information monitor system according to claim 1, wherein said physical information obtaining means comprises:

pulse wave detecting means for detecting said series of pulses of said pulse wave generated in synchronism with heartbeat of said subject;

blood pressure obtaining means including an inflatable cuff, for obtaining a blood pressure of said living subject;

relationship determining means for determining a relationship between a magnitude of said pulse wave detected by said pulse wave detecting means and said blood pressure obtained by said blood pressure obtaining means; and

blood pressure determining means for determining a monitored systolic blood pressure (MBP_SYS) and a monitored diastolic blood pressure (MBP_DIA) based on said magnitude of said pulse wave and said relationship determined by said determining means.

4. A physical information monitor system according to claim 1, wherein said physical information comprises blood pressure of said living subject.

5. A physical information monitor system according to claim 1, wherein said physical information stored in said physical information memory means comprises an average of a plurality of previously obtained physical information values.

6. A physical information monitor system, comprising:

physical information obtaining means for successively obtaining physical information of a living subject, said physical information obtaining means obtaining as said physical information a series of pulses of a pulse wave generated in synchronism with heartbeat of said subject;

physical information memory means for storing said physical information which is previously obtained in a comparatively normal condition of said living subject;

abnormality determining means for determining that said physical information obtained by said physical information obtaining means is abnormal when said physical information is outside a predetermined reference range;

a display device for indicating said physical information obtained by said physical information obtaining means; and

indication control means for controlling said display device to simultaneously indicate, while the physical information is abnormal, in a same indication area of said display device, said physical information which has been determined to be abnormal by said abnormality determining means and said physical information previously obtained in said comparatively normal condition of said subject and stored by said physical information memory means, said indication control means controlling said display device to indicate, in a same two-dimensional coordinate system, a waveform of one of a series of pulses of a normal pulse wave previously obtained in a comparatively normal condition of said subject and a waveform of one of a series of pulses of the pulse wave obtained by said physical information obtaining means in an abnormal condition of said subject, such that phases of said waveforms of said normal pulse wave and said abnormal pulse wave coincide with each other, in said same two-dimensional coordinate system in which time is taken along an abscissa while an amplitude of said series of pulses is taken along an ordinate, said indication control means including normalizing means for normalizing said waveforms of said normal pulse wave and said abnormal pulse wave, such that an amplitude and a wavelength of said abnormal pulse wave coincide with an amplitude and a wavelength of said normal pulse wave, said indication control means controlling said display device to indicate the waveforms of said normal pulse wave and said abnormal pulse wave which have been normalized by said normalizing means, such that said waveforms of said normal pulse wave and said abnormal pulse wave are superimposed on each other.

7. A physical information monitor system according to claim 6, wherein said physical information obtaining means obtains as said physical information a series of pulses of a pulse wave generated in synchronism with heartbeat of said subject, while said indication control means controls said display device to indicate a series of pulses of a normal pulse wave previously obtained in the comparatively normal condition of said subject and said series of pulses of the pulse wave obtained by said physical information obtaining means in an abnormal condition of said subject, in a same two-dimensional coordinate system in which time is taken along an abscissa while an amplitude of said series of pulses is taken along an ordinate.

8. A physical information monitor system according to claim 6, wherein said indication control means includes calculating means for calculating an area difference index which quantitatively indicates a difference between an area defined by said waveform of said normal pulse wave and an area defined by said waveform of said abnormal pulse wave, said indication control means controlling said display device to indicate said area difference