BLOOD PRESSURE MEASUREMENT DEVICE FOR MEASURING AT APPROPRIATE TIMING

• US 20110230729A1
• Filed: 08/05/2008
• Published: 09/22/2011
• Est. Priority Date: 08/09/2007
• Status: Active Grant

• Current Assignee: Jichi Medical University, Omron Healthcare Company Limited (Omron Corporation)
• Original Assignee: Jichi Medical University, Omron Healthcare Company Limited (Omron Corporation)
• Inventors: Watanabe, Takashi, Shirasaki, Osamu, Kario, Kazuomi
• Granted Patent: US 9,060,694 B2
• Time in Patent Office: Days
• US Class Current: 600/301
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• 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
• CPC Class Codes: A61B 5/02422 within occluders
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/6824 Arm or wrist
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A blood pressure measurement device includes a finger cuff for measuring a blood oxygen saturation level of a subject as physiological information excluding a blood pressure, a pulse wave detecting portion, and an oxygen saturation level calculating portion, where a start of blood pressure measurement in a sphygmomanometer is determined by a comparing and determining portion when a value becomes greater than or equal to a reference value. After the end of the measurement, a time limit for limiting the start of the blood pressure measurement is set. The comparing and determining portion determines not to start the blood pressure measurement within the time limit even if the blood oxygen saturation level becomes greater than or equal to the reference value.

Claims

1. A blood pressure measurement device comprising:

a blood pressure measuring portion for measuring a blood pressure of a subject;

an acquiring portion for obtaining physiological information on a type excluding the blood pressure of the subject; and

a control portion for outputting a control signal for activating the blood pressure measuring portion when the physiological information satisfies a predetermined condition, and setting a time limit for limiting the activation of the blood pressure measuring portion for a predetermined time after the measurement.

3. The blood pressure measurement device according to claim 1, wherein the physiological information is at least one of a blood oxygen saturation level, a heart rate, a breathing waveform, and a cardiograph waveform.

2. A blood pressure measurement comprising:

a blood pressure measuring portion for measuring a blood pressure of a subject;

an acquiring portion for obtaining physiological information on a type excluding the blood pressure of the subject; and

a determining portion for determining a start of the measurement in the blood pressure measuring portion and a start of a time limit for limiting the start of the measurement based on the physiological information, and outputting a control signal for activating the blood pressure measuring portion;

wherein the determining portion determines to start the measurement when a value obtained from the physiological information satisfies a first condition outside the time limit, and to start the time limit from an end of the measurement, and

wherein the determining portion determines not to start the measurement when the value obtained from the physiological information satisfies the first condition within the time limit.

4. The blood pressure measurement device according to claim 2, wherein the determining portion determines to start the measurement when the value obtained from the physiological information satisfies a second condition within the time limit.

5. The blood pressure measurement device according to claim 4,

wherein the physiological information is a blood oxygen saturation level;

wherein the determining portion comprises;

a first storage part for storing a reference value of the blood saturation level, and

a second storage part for storing a lowest value of the blood saturation level from the start of the determination process in the determining portion,

wherein the determining portion determines to start the measurement when the blood saturation level becomes smaller than the reference value as the first condition outside the time limit, and start the time limit from the end of the measurement, and

wherein the determining portion determines to start the measurement when the blood saturation level becomes smaller than the lowest value as the second condition within the time limit.

6. The blood pressure measurement device according to claim 4,

wherein the physiological information is a heart rate;

wherein the determining portion comprises;

a first storage part for storing a reference value of the heart rate, and

a second storage part for storing a highest value of the heart rate from the start of the determination process in the determining portion,

wherein the determining portion determines to start the measurement when the heart rate becomes greater than the reference value as the first condition outside the time limit, and start the time limit from the end of the measurement, and

wherein the determining portion determines to start the measurement when the heart rate becomes greater than the highest value as the second condition within the time limit.

7. The blood pressure measurement device according to claim 4,

wherein the physiological information is a breathing waveform;

wherein a detecting portion (22) for detecting an apnea or an infrequent respiration state based on the breathing waveform is further arrange;

wherein the determining portion comprises;

a first storage part for storing a reference value of a duration of the apnea or the infrequent respiration state, and

a second storage part for storing a longest value of the duration from the start of the determination process in the determining portion,

wherein the determining portion determines to start the measurement when the duration becomes longer than the reference value as the first condition outside the time limit, and start the time limit from the end of the measurement, and

wherein the determining portion determines to start the measurement when the duration becomes longer than the longest value as the second condition within the time limit.

8. The blood pressure measurement device according to claim 4,

wherein the physiological information is a cardiograph waveform;

wherein a detecting portion for detecting a heart rate based on the cardiograph waveform is further arranged;

wherein the determining portion comprises;

a first storage part for storing a first reference value of the heart rate, and

a second storage part for storing a second reference value having an amplitude of a T wave of a plurality of waveforms forming the cardiograph waveform of one beat,

wherein the determining portion determines to start the measurement when the heart rate becomes greater than the first reference value as the first condition outside the time limit, and start the time limit from the end of the measurement, and

wherein the determining portion determines to start the measurement when the amplitude of the T wave becomes smaller than the second reference value as the second condition within the time limit.

9. The blood pressure measurement device according to claim 2, wherein the physiological information is at least one of a blood oxygen saturation level, a heart rate, a breathing waveform, and a cardiograph waveform.