PULSE DATA DETECTING APPARATUS, PULSE DATA DETECTING METHOD, AND STORAGE MEDIUM HAVING PULSE DATA DETECTION PROGRAM RECORDED THEREON

• US 20140081161A1
• Filed: 09/16/2013
• Published: 03/20/2014
• Est. Priority Date: 09/18/2012
• Status: Active Application

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: KUNO, Toshiya
• Granted Patent: US 10,278,597 B2
• Time in Patent Office: Days
• US Class Current: 600/502
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02108 from analysis of pulse wave characteristics
• 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 5/02438 with portable devices, e.g. worn by the patient
• CPC Class Codes: A61B 5/025 within occluders, e.g. responsive to Korotkoff sounds electric stethoscopes A61B7/04
• CPC Class Codes: A61B 5/4854 Diagnosis based on concepts of traditional oriental medicine
• CPC Class Codes: A61B 5/683 Means for maintaining contact with the body A61B5/6802 takes precedence

Abstract

A pulse data detecting apparatus, pulse data detecting method, and pulse data detection program are provided capable of suppressing an influence of the condition of the body surface to be measured and obtaining an appropriate measurement result under a wide range of conditions. In the present invention, a blood-flow-suppressing-projection protrusion-control mechanism section causes a blood-flow-suppressing projection to protrude to press or compress the body surface to suppress a blood flow on a downstream side, thereby increasing a blood pressure of a measurement region at the time of measurement. A light-receiving element receives reflected light of light applied from a light-emitting element to a skin surface, and outputs an electrical signal. Increasing the blood pressure of the measurement region enables to obtain an output signal at a sufficient output level from the light-receiving element. A CPU calculates a pulse rate based on the output signal from the light-receiving element.

Claims

1. A pulse data detecting apparatus comprising

a pulse data detecting section which detects pulse data as being in contact with a body surface;

a blood-flow suppressing section which suppresses a blood flow in a blood vessel to increase a blood pressure of a measurement region; and

a pulse data output section which outputs the pulse data detected by the pulse data detecting section in a state where the blood-flow suppressing section suppresses the blood flow in the blood vessel.

2. The pulse data detecting apparatus according to claim 1, wherein the blood-flow suppressing section suppresses a blood flow on a downstream side with respect to a position where the pulse data detecting apparatus is placed.

3. The pulse data detecting apparatus according to claim 1, wherein the blood-flow suppressing section is a blood-flow-suppressing projection section which presses or compresses the body surface, and

wherein the blood-flow-suppressing projection section is arranged on a downstream side of the blood flow with respect to a position where the pulse data detecting apparatus is placed, and suppresses the blood flow on the downstream side by pressing or compressing the body surface.

4. The pulse data detecting apparatus according to claim 3, further comprising a blood-flow-suppressing-projection protrusion-control section which sequentially changes a state of the blood-flow-suppressing projection section among a plurality of protrusion states,

wherein the pulse data output section outputs pulse data satisfying an adequate condition among a plurality of pieces of pulse data detected by the pulse data detecting section in respective protrusion states of the blood-flow-suppressing projection section.

5. The pulse data detecting apparatus according to claim 4, wherein the pulse data is based on an electrical signal, and

wherein the pulse data output section outputs the pulse data satisfying the adequate condition based on a ratio of signal components and noise components of a pulse in detection intensity distribution for each frequency component of the electrical signal.

6. The pulse data detecting apparatus according to claim 4, wherein the pulse data is based on an electrical signal, and

wherein the pulse data output section outputs the pulse data satisfying the adequate condition based on change amounts of a pitch and an amplitude of each waveform of the electrical signal.

7. The pulse data detecting apparatus according to claim 3, wherein the blood-flow-suppressing projection section is structured to protrude in a skin direction by filling a bag-shaped member with a fluid to increase a volume thereof.

8. The pulse data detecting apparatus according to claim 3 wherein the blood-flow-suppressing projection section is structured to protrude by moving a stick-shaped member in a skin direction.

9. The pulse data detecting apparatus according to claim 3, wherein the blood-flow-suppressing projection section is structured to protrude in a skin direction by rotating a flat member.

10. The pulse data detecting apparatus according to claim 3, wherein the blood-flow-suppressing projection section presses or compresses the body surface intermittently with a detection timing by the pulse data detecting section so as to prevent a compressed state from continuing for a long time.

11. The pulse data detecting apparatus according to claim 4, further comprising a protrusion-state storage section which stores a protrusion state of the blood-flow-suppressing projection section,

wherein the pulse data output section judges whether the pulse data detected by the pulse data detecting section in the protrusion state of the blood-flow-suppressing projection section stored in advance in the protrusion-state storage section satisfies the adequate condition.

12. A pulse data detecting method used by a pulse data detecting apparatus comprising

a step of suppressing a blood flow in a blood vessel to increase a blood pressure of a measurement region when pulse data is detected in contact with a body surface;

and

a step of outputting the detected pulse data in a state where the blood flow in the blood vessel is suppressed.

13. A non-transitory computer-readable storage medium having stored thereon a pulse data detection program that is executable by a computer, the program being executable by the computer to perform functions comprising:

processing for suppressing a blood flow in a blood vessel to increase a blood pressure of a measurement region when pulse data is detected in contact with a body surface; and

processing for outputting the detected pulse data in a state where the blood flow in the blood vessel is suppressed.