Non-invasive blood component measuring device and non-invasive blood component measuring method

• US 20090005661A1
• Filed: 06/27/2008
• Published: 01/01/2009
• Est. Priority Date: 06/29/2007
• Status: Abandoned Application

• Current Assignee: Sysmex Corporation
• Original Assignee: Sysmex Corporation
• Inventors: Numada, Shigehiro, Ozawa, Toshiyuki
• Application Number:
  US12/215,520
• Publication Number:
  US 20090005661A1
• Time in Patent Office: Days
• US Class Current: 600/322
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/681 Wristwatch-type devices

Abstract

A non-invasive blood component measuring device comprising: a light source section for irradiating a light to a blood vessel through a skin; an imaging section for imaging the irradiated blood vessel through the skin; and a controller, including a memory under control of a processor, the memory storing instructions enabling the processor to carry out operations, comprising: creating a concentration profile based on an image obtained by imaging the blood vessel with the imaging section; calculating a blood component concentration based on the concentration profile; acquiring a shape feature of the concentration profile; and correcting the blood component concentration based on the shape feature of the concentration profile is disclosed. A non-invasive blood component measuring method is also disclosed.

Claims

1. A non-invasive blood component measuring device comprising:

a light source section for irradiating a light to a blood vessel through a skin;

an imaging section for imaging the irradiated blood vessel through the skin; and

a controller, including a memory under control of a processor, the memory storing instructions enabling the processor to carry out operations, comprising;

creating a concentration profile based on an image obtained by imaging the blood vessel with the imaging section;

calculating a blood component concentration based on the concentration profile;

acquiring a shape feature of the concentration profile; and

correcting the blood component concentration based on the shape feature of the concentration profile.

2. The non-invasive blood component measuring device of claim 1 wherein, the shape feature of the concentration profile includes a kurtosis of the concentration profile, and a distribution width at a predetermined height of the concentration profile.

3. The non-invasive blood component measuring device of claim 1 wherein,

the operations further comprise acquiring a blood vessel peripheral tissue blood amount based on a blood vessel peripheral tissue in the image;

wherein,

the correcting operation is performed based on the shape feature of the concentration profile, and the blood vessel peripheral tissue blood amount.

4. The non-invasive blood component measuring device of claim 3 wherein, the operations further comprise:

creating a blood vessel depth profile based on the image obtained by imaging with the imaging section; and

acquiring a blood vessel depth based on the blood vessel depth profile;

wherein,

the correcting operation is performed based on the shape feature of the concentration profile, the blood vessel peripheral tissue blood amount, and the blood vessel depth.

5. The non-invasive blood component measuring device of claim 1, wherein the calculating operation is performed based on a peak height of the concentration profile, and a distribution width at a predetermined height of the concentration profile.

6. The non-invasive blood component measuring device of claim 1 wherein, the blood component concentration is hemoglobin concentration.

7. A non-invasive blood component measuring device comprising:

a light source section for irradiating a light to a blood vessel through a skin;

an imaging section for imaging the irradiated blood vessel through the skin; and

a controller, including a memory under control of a processor, the memory storing instructions enabling the processor to carry out operations, comprising;

creating a concentration profile based on an image obtained by imaging the blood vessel with the imaging section; and

calculating a blood component concentration based on a peak height of the concentration profile, and a shape feature of the concentration profile.

8. The non-invasive blood component measuring device of claim 7 wherein, the shape feature of the concentration profile includes a kurtosis of the concentration profile, and a distribution width at a predetermined height of the concentration profile.

9. The non-invasive blood component measuring device of claim 7 wherein, the operations further comprise:

acquiring a blood vessel peripheral tissue blood amount based on a blood vessel peripheral tissue in the image; and

correcting the blood component concentration based on the blood vessel peripheral tissue blood amount.

10. The non-invasive blood component measuring device of claim 9 wherein, the operations further comprise:

creating a blood vessel depth profile based on the image obtained by imaging with the imaging section; and

acquiring a blood vessel depth based on the blood vessel depth profile;

wherein,

the correcting operation is performed based on the blood vessel peripheral tissue blood amount and the blood vessel depth.

11. The non-invasive blood component measuring device of claim 7 wherein the blood component concentration is hemoglobin concentration.

12. A non-invasive blood component measuring method comprising the steps of:

irradiating a light to a blood vessel through a skin and imaging the irradiated blood vessel through the skin;

creating a concentration profile distributed across the blood vessel based on an image obtained by imaging the blood vessel;

calculating a blood component concentration based on the concentration profile;

acquiring a shape feature of the concentration profile; and

correcting the blood component concentration based on the shape feature of the concentration profile.

13. The non-invasive blood component measuring method of claim 12, wherein the shape feature of the concentration profile includes a kurtosis of the concentration profile, and a distribution width at a predetermined height of the concentration profile.

14. The non-invasive blood component measuring method of claim 12, further comprising a step of acquiring a blood vessel peripheral tissue blood amount based on a blood vessel peripheral tissue in the image, and

the correcting step is performed based on the shape feature of the concentration profile and the blood vessel peripheral tissue blood amount.

15. The non-invasive blood component measuring method of claim 14, further comprising the steps of:

creating a blood vessel depth profile based on the image obtained by imaging the blood vessel; and

acquiring a blood vessel depth based on the blood vessel depth profile; and

the correcting step is performed based on the shape feature of the concentration profile, the blood vessel peripheral tissue blood amount, and the blood vessel depth.

16. The non-invasive blood component measuring method of claim 12, wherein the calculating step is performed based on a peak height of the concentration profile, and a distribution width at a predetermined height of the concentration profile.

17. A non-invasive blood component measuring method comprising the steps of:

irradiating a light to a blood vessel through a skin and imaging the irradiated blood vessel through the skin;

creating a concentration profile distributed across the blood vessel based on an image obtained by imaging the blood vessel; and

calculating a blood component concentration based on a peak height of the concentration profile and a shape feature of the concentration profile.

18. The non-invasive blood component measuring method of claim 17, wherein the shape feature of the concentration profile includes a kurtosis of the concentration profile, and a distribution width at a predetermined height of the concentration profile.

19. The non-invasive blood component measuring method of claim 17, further comprising the steps of:

acquiring a blood vessel peripheral tissue blood amount based on a blood vessel peripheral tissue in the image; and

correcting the blood component concentration based on the blood vessel peripheral tissue blood amount.

20. The non-invasive blood component measuring method of claim 19, further comprising the steps of:

creating a blood vessel depth profile based on the image obtained by imaging the blood vessel; and

acquiring a blood vessel depth based on the blood vessel depth profile; and

the correcting step is performed based on the blood vessel peripheral tissue blood amount and the blood vessel depth.