Apparatus for evaluating exercise function of person

• US 5,906,581 A
• Filed: 12/19/1996
• Issued: 05/25/1999
• Est. Priority Date: 12/19/1996
• Status: Expired due to Fees

• Current Assignee: Colin Medical Technology Corporation (Omron Corporation)
• Original Assignee: Colin Corporation (Fukuda Denshi Company Limited)
• Inventors: Tsuda, Hideichi
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US08/769,442
• Time in Patent Office: 887 Days
• Field of Search: 600/483, 600/484, 600/485, 600/500, 600/501, 600/502, 600/526, 600/490, 600/493, 600/495, 600/492, 600/481, 600/520
• US Class Current: 600/485
• CPC Class Codes: A61B 5/02208 using the Korotkoff method
• CPC Class Codes: A61B 5/02225 using the oscillometric method
• CPC Class Codes: A61B 5/0225 the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
• CPC Class Codes: A61B 5/0285 Measuring or recording phase velocity of blood waves
• CPC Class Codes: A61B 5/0295 using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
• CPC Class Codes: A61B 5/221 Ergometry, e.g. by using bicycle type apparatus
• CPC Class Codes: A61B 5/222 combined with detection or measurement of physiological parameters, e.g. heart rate

Abstract

An apparatus for evaluating an exercise function of a person who undergoes an exercise load, including a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person, a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person, a first calculating device which successively calculates a product of the pulse rate and the blood pressure in synchronism with the heartbeat of the person, a second calculating device which calculates a total energy produced by the person after application of the exercise load to the person is started and before the products successively calculated by the first calculating device increase up to a target value, and a display device which displays an evaluation value of the exercise function of the person based on the total energy calculated by the second calculating device.

Claims

1. An apparatus for evaluating an exercise function of a person who undergoes an exercise load, comprising:

a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person;

a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person;

a first calculating device which successively calculates a pressure rate product of said pulse rate and said blood pressure a in synchronism with the heartbeat of the person;

a second calculating device which calculates a total energy produced by the person after application of the exercise load to the person is started and before the products successively calculated by said first calculating device increase up to a target value; and

a display device which displays an evaluation value of the exercise function of the person based on the total energy calculated by said second calculating device.

2. An apparatus according to claim 1, wherein said blood-pressure measuring device comprises:

a pressing device which provides a pressing force to press a body portion of the person;

a pressing-force changing device which changes the pressing force of said pressing device;

standard-blood-pressure determining means for determining a standard blood pressure of the person based on a heartbeat-synchronous wave obtained while the pressing force of said pressing device is changed by said pressing-force changing device;

a pressure-pulse-wave sensor adapted to be pressed against an artery of the person via a skin tissue above the artery so as to detect a magnitude of a pressure pulse wave produced from the artery in synchronism with the heartbeat of the person;

relationship determining means for determining a relationship between blood pressure and magnitude of pressure pulse wave, based on the standard blood pressure determined by said standard-blood-pressure determining means and the magnitude of the pressure pulse wave detected by said pressure pulse wave sensor; and

blood-pressure estimating means for successively estimating a blood pressure of the person, based on a magnitude of each of a plurality of heartbeat-synchronous pulses of the pressure pulse wave detected by said pressure pulse wave sensor, according to the relationship determined by said relationship determining means.

3. An apparatus according to claim 2, wherein said pressing device comprises an inflatable cuff adapted to be wound around the body portion of the person, said pressing-force changing device comprising a cuff-pressure changing device which changes a fluid pressure in said cuff, said standard-blood-pressure determining means comprising means for determining the standard blood pressure of the person based on a variation of respective amplitudes of a plurality of heartbeat-synchronous pulses of the heartbeat-synchronous wave which is a pressure oscillation produced in said cuff while the pressure of the cuff is changed by said cuff-pressure changing device.

4. An apparatus according to claim 2, wherein said pressing device comprises an inflatable cuff adapted to be wound around the body portion of the person, said pressing-force changing device comprising a cuff-pressure changing device which changes a fluid pressure in said cuff, said standard-blood-pressure determining means comprising means for determining the standard blood pressure of the person based on a fluid pressure of said cuff at a time when a Korotkoff sound is first detected, or last detected, from the body portion while the pressure of the cuff is changed by said cuff-pressure changing device.

5. An apparatus according to claim 2, wherein said pressure pulse wave sensor comprises a flat surface adapted to be pressed against the artery of the person via the skin tissue, a plurality of pressure sensing elements arranged in the flat surface, and a flat-surface pressing device which presses the flat surface against the artery via the skin tissue, and wherein said blood-pressure measuring device comprises means for controlling the flat-surface pressing device to press the flat surface against the artery via the skin tissue such that a portion of a wall of the artery is flattened under the flat surface and the skin tissue.

6. An apparatus according to claim 2, wherein said standard-blood-pressure determining means comprises means for determining the standard blood pressure of the person, before the application of the exercise load to the person is started, and wherein said relationship determining means comprises means for determining the relationship between blood pressure and magnitude of pressure pulse wave, based on the standard blood pressure determined by the standard-blood-pressure determining means and the magnitude of the pressure pulse wave detected by said pressure pulse wave sensor before the application of the exercise load to the person is started.

7. An apparatus according to claim 1, further comprising:

an exercise-load applying device which applies the exercise load to the person;

an exercise-load changing device which changes the exercise load applied to the person by said exercise-load applying device; and

judging means for judging whether the products successively calculated by said first calculating device have increased up to the target value,

said exercise-load changing device zeroing, when said judging means makes a positive judgment, the exercise load applied to the person by said exercise-load applying device.

8. An apparatus according to claim 7, wherein said exercise-load applying device comprises a generator which includes a rotary member and which generates an electric power when said rotary member is rotated by the person, and wherein said second calculating device comprises means for calculating said total energy based on a total energy produced by said generator after the application of the exercise load to the person is started and before the products successively calculated by said first calculating device increase up to the target value.

9. An apparatus according to claim 1, wherein said display device comprises means for displaying said evaluation value comprising at least one of said total energy calculated by said second calculating device and an exercise-function index value corresponding to said total energy.

10. An apparatus for evaluating an exercise function of a person who undergoes a predetermined exercise load, comprising:

a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person;

a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person;

a calculating device which successively calculates a pressure-rate product as a product of said pulse rate and said blood pressure, in synchronism with the heartbeat of the person;

a first memory device which stores a first curve which represents a standard time-wise change of pressure-rate products and which corresponds to said predetermined exercise load; and

a display device which simultaneously displays said first curve and a second curve representing an actual time-wise change of the pressure-rate products successively calculated by said calculating device, so that an observer can compare said first curve and said second curve with each other.

11. An apparatus according to claim 10, wherein said blood-pressure measuring device comprises:

a pressing device which provides a pressing force to press a body portion of the person;

a pressing-force changing device which changes the pressing force of said pressing device;

standard-blood-pressure determining means for determining a standard blood pressure of the person based on a heartbeat-synchronous wave obtained while the pressing force of said pressing device is changed by said pressing-force changing device;

a pressure-pulse-wave sensor adapted to be pressed against an artery of the person via a skin tissue above the artery so as to detect a magnitude of a pressure pulse wave produced from the artery in synchronism with the heartbeat of the person;

relationship determining means for determining a relationship between blood pressure and magnitude of pressure pulse wave, based on the standard blood pressure determined by said standard-blood-pressure determining means and the magnitude of the pressure pulse wave detected by said pressure pulse wave sensor; and

blood-pressure estimating means for successively estimating a blood pressure of the person, based on a magnitude of each of a plurality of heartbeat-synchronous pulses of the pressure pulse wave detected by said pressure pulse wave sensor, according to the relationship determined by said relationship determining means.

12. An apparatus according to claim 11, wherein said pressing device comprises an inflatable cuff adapted to be wound around the body portion of the person, said pressing-force changing device comprising a cuff-pressure changing device which changes a fluid pressure in said cuff, said standard-blood-pressure determining means comprising means for determining the standard blood pressure of the person based on a variation of respective amplitudes of a plurality of heartbeat-synchronous pulses of the heartbeat-synchronous wave which is a pressure oscillation produced in said cuff while the pressure of the cuff is changed by said cuff-pressure changing device.

13. An apparatus according to claim 11, wherein said pressing device comprises an inflatable cuff adapted to be wound around the body portion of the person, said pressing-force changing device comprising a cuff-pressure changing device which changes a fluid pressure in said cuff, said standard-blood-pressure determining means comprising means for determining the standard blood pressure of the person based on a fluid pressure of said cuff at a time when a Korotkoff sound is first detected, or last detected, from the body portion while the pressure of the cuff is changed by said cuff-pressure changing device.

14. An apparatus according to claim 11, wherein said pressure pulse wave sensor comprises a flat surface adapted to be pressed against the artery of the person via the skin tissue, a plurality of pressure sensing elements arranged in the flat surface, and a flat-surface pressing device which presses the flat surface against the artery via the skin tissue, and wherein said blood-pressure measuring device comprises means for controlling the flat-surface pressing device to press the flat surface against the artery via the skin tissue such that a portion of a wall of the artery is flattened under the flat surface and the skin tissue.

15. An apparatus according to claim 11, wherein said standard-blood-pressure determining means comprises means for determining the standard blood pressure of the person, before the application of the exercise load to the person is started, and wherein said relationship determining means comprises means for determining the relationship between blood pressure and magnitude of pressure pulse wave, based on the standard blood pressure determined by the standard-blood-pressure determining means and the magnitude of the pressure pulse wave detected by said pressure pulse wave sensor before the application of the exercise load to the person is started.

16. An apparatus according to claim 10, further comprising a second memory device which stores said second curve, wherein said display device comprises means for displaying said second curve stored in said second memory device, in addition to said first curve and a following second curve representing an actual time-wise change of pressure-rate products successively calculated by said calculating device in a following exercise-function evaluation, so that the observer can compare said second curve, said first curve, and said following second curve with one another.

17. An apparatus according to claim 10, further comprising:

an exercise-load applying device which applies an exercise load to the person; and

an exercise-load changing device which changes the exercise load applied to the person by said exercise-load applying device, to said predetermined exercise load, according to a predetermined exercise-load pattern.

18. An apparatus for evaluating an exercise function of a person who undergoes a predetermined exercise load, comprising:

a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person;

a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person;

a calculating device which successively calculates a pressure-rate product as a product of said pulse rate and said blood pressure, in synchronism with the heartbeat of the person;

a memory device which stores a first curve which represents a standard time-wise change of pressure-rate products and which corresponds to said predetermined exercise load; and

a display device which displays an evaluation value of the exercise function of the person based on a correlation coefficient between said first curve and a second curve representing an actual time-wise change of the pressure-rate products successively calculated by said calculating device.

19. An apparatus according to claim 18, wherein said display device comprises means for displaying said evaluation value comprising at least one of said correlation coefficient between said first curve and said second curve and an exercise-function index value corresponding to said correlation coefficient.

20. An apparatus for evaluating an exercise function of a person who undergoes a predetermined exercise load, comprising:

a pulse-rate measuring device which successively measures a pulse rate of the person in synchronism with a heartbeat of the person;

a blood-pressure measuring device which successively and non-invasively measures a blood pressure of the person in synchronism with the heartbeat of the person;

a calculating device which successively calculates a pressure-rate product as a product of said pulse rate and said blood pressure, in synchronism with the heartbeat of the person;

a memory device which stores a first curve which represents a standard time-wise change of pressure-rate products and which corresponds to said predetermined exercise load; and

a display device which displays an evaluation value of the exercise function of the person based on an area defined by, and between, said first curve and a second curve representing an actual time-wise change of the pressure-rate products successively calculated by said calculating device.

21. An apparatus according to claim 20, wherein said display device comprises means for displaying said evaluation value comprising at least one of said area defined by and between said first curve and said second curve and an exercise-function index value corresponding to said area.