NEAR-INFRARED SPECTROSCOPY SENSOR WITH LIGHT SHEET

• US 20110009721A1
• Filed: 07/08/2010
• Published: 01/13/2011
• Est. Priority Date: 07/08/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Gonopolskiy, Oleg, Anderson, Arik
• Granted Patent: US 9,931,078 B2
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A sensor includes a sensor pad configured to be disposed on a portion of a patient'"'"'s body. A light sheet is disposed on the sensor pad and has a first substrate and a second substrate spaced from one another. The light sheet further includes a light source configured to emit near-infrared light and a light detector configured to detect near-infrared light. The light source and the light detector are disposed between the substrates. The sensor pad is configured to allow light generated by the light source to travel through the portion of the patient'"'"'s body to the light detector. The light received by the light detector is indicative of oxygen saturation of the portion of the patient'"'"'s body through which the light travelled.

Claims

1. A sensor comprising:

a sensor pad configured to be disposed on a portion of a patient'"'"'s body; and

a light sheet disposed on the sensor pad and having a first substrate and a second substrate spaced from one another, wherein the light sheet includes a light source configured to emit near-infrared light and a light detector configured to detect near-infrared light and wherein the light source and the light detector are disposed between the substrates,

wherein the sensor pad is configured to allow light generated by the light source to travel through the portion of the patient'"'"'s body to the light detector and the light received by the light detector is indicative of oxygen saturation of the portion of the patient'"'"'s body through which the light travelled.

2. A sensor as set forth in claim 1, wherein at least one of the light source and the light detector has an anode side and a cathode side each electrically connected to one of the substrates.

3. A sensor as set forth in claim 1, further comprising a non-conductive adhesive disposed between the substrates.

4. A sensor as set forth in claim 3, wherein the non-conductive adhesive is configured to prevent the light detector from receiving light generated by the light source through the non-conductive adhesive.

5. A sensor as set forth in claim 1, further comprising a light blocker disposed between the substrates and configured to prevent the light detector from receiving light travelling between the substrates.

6. A sensor as set forth in claim 1, wherein at least one of the substrates is substantially transparent to near-infrared light.

7. A sensor as set forth in claim 1, wherein at least one of the substrates includes an electrically conductive pattern.

8. A sensor as set forth in claim 7, wherein the light source and the light detector are in electrical communication with one another via the electrically conductive pattern.

9. A sensor as set forth in claim 1, further comprising a light-blocking pattern disposed on at least one of the substrates.

10. A sensor as set forth in claim 9, wherein the sensor pad is non-conductive.

11. A sensor as set forth in claim 10, wherein the sensor pad is configured to prevent ambient light from interfering with the light detector.

12. A light sheet comprising:

a first substrate;

a second substrate spaced from the first substrate;

a light source disposed on the first substrate and the second substrate and configured to emit near-infrared light;

a light detector disposed on the first substrate and the second substrate and configured to detect near-infrared light;

wherein the first substrate is configured to allow light generated by the light source to travel through a portion of a patient'"'"'s body and be received by the light detector and wherein the light received by the light detector is indicative of oxygen saturation of the portion of the patient'"'"'s body through which the light travelled.

13. A light sheet as set forth in claim 12, wherein at least one of the light source and the light detector has an anode side and a cathode side each electrically connected to one of the substrates.

14. A light sheet as set forth in claim 12, further comprising a non-conductive adhesive disposed between the substrates and configured to prevent the light detector from receiving light generated by the light source through the non-conductive adhesive.

15. A light sheet as set forth in claim 12, further comprising a light blocker disposed between the substrates and configured to prevent the light detector from receiving light travelling between the substrates.

16. A sensor comprising:

a sensor pad configured to be disposed on a portion of a patient'"'"'s body;

a first light sheet having a light source configured to emit near-infrared light; and

a second light sheet electrically isolated from the first light sheet and having a light detector configured to detect near-infrared light,

wherein the sensor pad is configured to allow light generated by the light source to travel through the portion of the patient'"'"'s body to the light detector and the light received by the light detector is indicative of oxygen saturation of the portion of the patient'"'"'s body through which the light travelled

17. A sensor as set forth in claim 16, wherein the first light sheet and the second light sheet each include at least two substrates spaced from one another.

18. A sensor as set forth in claim 17, wherein the light source has an anode side and a cathode side each electrically connected to one of the substrates.

19. A sensor as set forth in claim 17, wherein the light detector has an anode side and a cathode side each electrically connected to one of the substrates.

20. A sensor as set forth in claim 17, wherein the first light sheet and the second light sheet each include a non-conductive adhesive disposed between the substrates.