Blood pressure monitor apparatus

• US 6,645,155 B2
• Filed: 05/08/2002
• Issued: 11/11/2003
• Est. Priority Date: 05/26/2000
• Status: Expired due to Fees

• Current Assignee: Omron Healthcare Company Limited (Omron Corporation)
• Original Assignee: Colin Corporation (Fukuda Denshi Company Limited)
• Inventors: Kawaguchi, Keizoh, Inukai, Hidekatsu, Nunome, Tomohiro, Yokozeki, Akihiro
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US10/140,326
• Publication Number:
  US 20020193692A1
• Time in Patent Office: 552 Days
• Field of Search: 600/485, 600/493-496, 600/500
• US Class Current: 600/485
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02255 the pressure being controlled by plethysmographic signals, e.g. derived from optical sensors
• CPC Class Codes: A61B 5/0285 Measuring or recording phase velocity of blood waves
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters

Abstract

A blood pressure monitor apparatus for monitoring a blood pressure of a living subject, comprising: pulse-wave-propagation-velocity-relating information obtaining means for successively obtaining pulse-wave-propagation-velocity-relating information which relates to a pulse-wave propagation velocity at which a pulse wave propagates in an artery of the subject; pulse-period-relating information obtaining means for successively obtaining pulse-period-relating information which relates to a pulse period of the subject; peripheral-blood-volume-relating information obtaining means for successively obtaining peripheral-blood-volume-relating information which relates to a volume of blood which flows in a peripheral body portion of the subject; and abnormality judging means for judging that the blood pressure of the subject is abnormal when at least one of the pulse-wave-propagation-velocity-relating information, pulse-period-relating information, and peripheral-blood-volume-relating information does not fall within a corresponding one of a first, a second and a third reference range.

Claims

1. A blood pressure monitor apparatus for monitoring a blood pressure of a living subject, comprising:

pulse-wave-propagation-velocity-relating information obtaining means for successively obtaining pulse-wave-propagation-velocity-relating information which relates to a pulse-wave propagation velocity at which a pulse wave propagates in an artery of the subject;

pulse-period-relating information obtaining means for successively obtaining pulse-period-relating information which relates to a pulse period of the subject;

peripheral-blood-volume-relating information obtaining means for successively obtaining peripheral-blood-volume-relating information which relates to a volume of blood which flows in a peripheral body portion of the subject; and

abnormality judging means for judging that said blood pressure of the subject is abnormal when at least one of said pulse-wave-propagation-velocity-relating information, said pulse-period-relating information, and said peripheral-blood-volume-relating information does not fall within a corresponding one of a first, a second and a third reference range,

wherein said first, second, and third reference ranges have a first, a second, and a third upper limit value, respectively, each of said first, second, and third upper limit values being a common value.

2. A blood pressure monitor apparatus according to claim 1, further comprising blood pressure measuring means which includes a cuff and which measures a blood pressure of the subject by changing a pressing pressure of said cuff applied to a body portion of the subject, wherein said abnormality judging means starts a blood pressure measurement of said blood pressure measuring means when a said blood pressure of the subject is judged to be abnormal.

3. A blood pressure monitor apparatus for monitoring a blood pressure of a living subject, comprising:

pulse-wave-propagation-velocity-relating information obtaining means for successively obtaining pulse-wave-propagation-velocity-relating information which relates to a pulse-wave propagation velocity at which a pulse wave propagates in an artery of the subject;

pulse-period-relating information obtaining means for successively obtaining pulse-period-relating information which relates to a pulse period of the subject;

peripheral-blood-volume-relating information obtaining means for successively obtaining peripheral-blood-volume-relating information which relates to a volume of blood which flows in a peripheral body portion of the subject; and

abnormality judging means for judging that said blood pressure of the subject is abnormal when at least one of said pulse-wave-propagation-velocity-relating information, and pulse-period-relating information, and said peripheral-blood-volume-relating information does not fall within a corresponding one of a first, a second and a third reference range,

wherein said first, second, and third reference ranges have a first, a second, and a third lower limit value, respectively each of said first, second, and third lower limit values being a common value.

4. A blood pressure monitor apparatus according to claim 3, further comprising blood pressure measuring means which includes a cuff and which measures a blood pressure of the subject by changing a pressing pressure of said cuff applied to a body portion of the subject, wherein said abnormality judging means starts a blood pressure measurement of said blood pressure measuring means when a said blood pressure of the subject is judged to be abnormal.

5. A blood pressure monitor apparatus for monitoring a blood pressure of a living subject, comprising:

pulse-wave-propagation-velocity-relating information obtaining means for successively obtaining pulse-wave-propagation-velocity-relating information which relates to a pulse-wave propagation velocity at which a pulse wave propagates in an artery of the subject;

pulse-period-relating information obtaining means for successively obtaining pulse-period-relating information which relates to a pulse period of the subject;

peripheral-blood-volume-relating information obtaining means for successively obtaining peripheral-blood-volume-relating information which relates to a volume of blood which flows in a peripheral body portion of the subject; and

abnormality judging means for judging that said blood pressure of the subject is abnormal when at least one of said pulse-wave-propagation-velocity-relating information, and pulse-period-relating information, and said peripheral-blood-volume-relating information does not fall within a corresponding one of a first, a second and a third reference range,

wherein said first, second, and third reference ranges have a first, a second, and a third lower limit value, respectively each of said first, second, and third lower limit values and each of said first, second, and third upper limit values being a common value being a common value.

6. A blood pressure monitor apparatus according to claim 5, further comprising blood pressure measuring means which includes a cuff and which measures a blood pressure of the subject by changing a pressing pressure of said cuff applied to a body portion of the subject, wherein said abnormality judging means starts a blood pressure measurement of said blood pressure measuring means when a said blood pressure of the subject is judged to be abnormal.