Vital information measuring device

• US 20070112259A1
• Filed: 11/10/2006
• Published: 05/17/2007
• Est. Priority Date: 11/14/2005
• Status: Active Grant

• Current Assignee: Konica Minolta Sensing, Inc. (Konica Minolta Inc.)
• Original Assignee: Konica Minolta Sensing, Inc. (Konica Minolta Inc.)
• Inventors: Nagai, Yoshiroh, Tateda, Norihiro
• Granted Patent: US 8,195,261 B2
• Time in Patent Office: Days
• US Class Current: 600/310
• CPC Class Codes: A61B 5/02007 Evaluating blood vessel condition, e.g. elasticity, compliance
• CPC Class Codes: A61B 5/02125 of pulse wave propagation time
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A vital information measuring device includes: a first light emitter for outputting light having a first wavelength; a second light emitter for outputting light having a second wavelength different from the first wavelength; a light detector for detecting the light outputted from the first light emitter and the light outputted from the second light emitter; an emission controller for controlling the first light emitter and the second light emitter to emit the respective light at sampling frequencies different from each other based on a certain relationship between an emission timing of the first light emitter and an emission timing of the second light emitter; a detection controller for controlling the light detector to detect the light from the first light emitter and the light from second light emitter in synchronism with the emission timing of the first light emitter and the emission timing of the second light emitter, respectively; and a storage for storing therein a light detection signal outputted from the light detector as measurement data.

Claims

1. A vital information measuring device comprising:

a first light emitter for outputting light having a first wavelength;

a second light emitter for outputting light having a second wavelength different from the first wavelength;

a light detector for detecting the light outputted from the first light emitter and the light outputted from the second light emitter;

an emission controller for controlling the first light emitter and the second light emitter to emit the respective light at sampling frequencies different from each other based on a certain relationship between an emission timing of the first light emitter and an emission timing of the second light emitter;

a detection controller for controlling the light detector to detect the light from the first light emitter and the light from second light emitter in synchronism with the emission timing of the first light emitter and the emission timing of the second light emitter, respectively; and

a storage for storing therein a light detection signal outputted from the light detector as measurement data.

2. The vital information measuring device according to claim 1, wherein

the emission controller controls the first light emitter and the second light emitter to emit the respective light at the respective emission timings with phases displaced from each other.

3. The vital information measuring device according to claim 1, wherein

the emission controller sets the sampling frequency of one of the first light emitter and the second light emitter which is higher than the sampling frequency of the other one of the first light emitter and the second light emitter to an integral multiplication of the lower sampling frequency.

4. The vital information measuring device according to claim 1, further comprising:

a first analyzer for performing a first analysis based on the measurement data obtained by using the one of the first light emitter and the second light emitter having the higher sampling frequency, out of the measurement data stored in the storage.

5. The vital information measuring device according to claim 1, further comprising:

a second analyzer for performing a second analysis based on the measurement data obtained by using one of the first light emitter and the second light emitter having the lower sampling frequency, out of the measurement data stored in the storage, and based on the measurement data which is extracted at a predetermined time interval corresponding to the lower sampling frequency, out of the measurement data obtained by using the other one of the first light emitter and the second light emitter having the higher sampling frequency.

6. The vital information measuring device according to claim 5, further comprising:

a display section for displaying an analysis result of the first analyzer and an analysis result of the second analyzer;

a display mode changer for changing over a display concerning the analysis result of the first analyzer and the analysis result of the second analyzer among a first display mode of exclusively displaying the analysis result of the first analyzer, a second display mode of exclusively displaying the analysis result of the second analyzer, and a third display mode of displaying both the analysis result of the first analyzer and the analysis result of the second analyzer; and

a display controller for controlling the display section to display the analysis result in the display mode selected by the display mode changer.

7. The vital information measuring device according to claim 5, wherein

the storage stores therein the analysis result of the first analyzer and the analysis result of the second analyzer.

8. A vital information measuring device comprising:

a first light emitter for outputting light having a first wavelength at a first frequency;

a second light emitter for outputting light having a second wavelength different from the first wavelength at a second frequency different from the first frequency;

a light detector for detecting the light outputted from the first light emitter and the light outputted from the second light emitter;

a first analyzer for performing a first analysis based on measurement data obtained by using the first light emitter; and

a second analyzer for performing a second analysis based on both the measurement data obtained by using the first light emitter and measurement data obtained by using the second light emitter.