DUAL-SPECTRA PULSE OXIMETER SENSORS AND METHODS OF MAKING THE SAME

• US 20150094550A1
• Filed: 09/30/2013
• Published: 04/02/2015
• Est. Priority Date: 09/30/2013
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Karp, Jason Harris, Yin, Ming
• Application Number:
  US14/040,789
• Publication Number:
  US 20150094550A1
• Time in Patent Office: Days
• US Class Current: 600/324
• CPC Class Codes: A61B 2562/0238 Optical sensor arrangements for performing transmission measurements on body tissue
• CPC Class Codes: A61B 2562/066 in a matrix array
• CPC Class Codes: A61B 5/02433 for infrared radiation
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.

Abstract

A dual-spectra pulse oximeter sensor is provided. The dual-spectra pulse oximeter sensor includes a sensor substrate, an array of a plurality of pairs of wavelength sources disposed on the sensor substrate, and a plurality of wavelength conversion devices. Further, each pair of the plurality of pairs of wavelength sources comprises a pair of light emitting diodes. Moreover, one light emitting diode of each pair of light emitting diodes is operatively coupled to a wavelength conversion device of the plurality of wavelength conversion devices.

Claims

1. A dual-spectra pulse oximeter sensor, comprising:

a sensor substrate;

an array of a plurality of pairs of wavelength sources disposed on the sensor substrate, wherein each pair of the plurality of pairs of wavelength sources comprises a pair of light emitting diodes; and

a plurality of wavelength conversion devices, wherein one light emitting diode of each pair of light emitting diodes is operatively coupled to a wavelength conversion device of the plurality of wavelength conversion devices.

2. The dual-spectra pulse oximeter sensor of claim 1, wherein each pair of light emitting diodes comprises homogeneous light emitting diodes.

3. The dual-spectra pulse oximeter sensor of claim 1, wherein the pair of light emitting diodes comprise diodes configured to emit light in a red wavelength range.

4. The dual-spectra pulse oximeter sensor of claim 1, wherein the wavelength conversion device comprises a layer of a wavelength conversion material.

5. The dual-spectra pulse oximeter sensor of claim 4, wherein the wavelength conversion material comprises a phosphor based material.

6. The dual-spectra pulse oximeter sensor of claim 1, wherein the light emitting diode of the pair of light emitting diodes operatively coupled to the wavelength conversion device is configured to emit light in an infrared wavelength range.

7. The dual-spectra pulse oximeter sensor of claim 1, wherein the sensor substrate is a flexible substrate.

8. A pulse oximetry system, comprising:

a pulse oximeter device, comprising;

a dual-spectra pulse oximeter sensor, comprising;

a sensor substrate;

an array of a plurality of pairs of wavelength sources disposed on the sensor substrate, wherein each pair of the plurality of pairs of wavelength sources comprises a pair of homogeneous light emitting diodes;

a plurality of wavelength conversion devices, wherein one light emitting diode of each pair of homogeneous light emitting diodes is operatively coupled to a wavelength conversion device of the plurality of wavelength conversion devices;

an optical detector configured to detect absorption of wavelength ranges emitted by the plurality of pairs of the wavelength sources;

a processor configured to process the detected signals; and

a display member configured to display processed signals from the processor.

9. The pulse oximetry system of claim 8, wherein each of the plurality of wavelength conversion devices comprises a layer of a wavelength conversion material.

10. The pulse oximetry system of claim 8, wherein one or more pairs of the plurality of pairs of wavelength sources comprise a red wavelength source and an infrared wavelength source.

11. A method of making a dual-spectra pulse oximeter sensor, comprising:

providing a sensor substrate;

providing a plurality of homogeneous light emitting diodes;

positionally disposing each of the plurality of light emitting diodes on the sensor substrate to form a plurality of pairs of the homogeneous light emitting diodes; and

selectively operatively coupling one light emitting diode corresponding to each pair of the plurality of pairs of light emitting diodes to a corresponding wavelength conversion device of a plurality of wavelength conversion devices.

12. The method of claim 11, wherein the plurality of light emitting diodes is simultaneously positionally disposed in a single step.

13. The method of claim 11, wherein the step of providing the plurality of homogeneous light emitting diodes comprises disposing a magnetic material on at least a portion of a surface of each homogeneous light emitting diodes of the plurality of homogeneous light emitting diodes.

14. The method of claim 13, further comprising:

providing a magnetic template having independent magnets spatially arranged in a magnetic array; and

disposing the sensor substrate on the magnetic template.

15. The method of claim 13, wherein the step of positionally disposing each of the plurality of homogeneous light emitting diodes comprises:

disposing the plurality of homogeneous light emitting diodes having the magnetic material on the sensor substrate; and

exposing the plurality of homogeneous light emitting diodes to a magnetic field to positionally dispose the plurality of homoegeneous light emitting diodes on the sensor substrate.

16. The method of claim 11, further comprising:

physically coupling each of the plurality of homogeneous light emitting diodes to a respective position on the sensor substrate.

17. The method of claim 11, wherein the step of selectively operatively coupling one light emitting diode corresponding to each pair of the plurality of pairs of light emitting diodes to the corresponding wavelength conversion comprises:

masking the other light emitting diode corresponding to each pair of the plurality of pairs of light emitting diodes;

applying the wavelength conversion device to the one light emitting diode of each pair of the plurality of pairs of light emitting diodes; and

removing the mask.

18. The method of claim 11, wherein the step of positionally disposing each of the plurality of light emitting diodes on the sensor substrate comprises simultaneously disposing each of the plurality of light emitting diodes.

19. The method of claim 11, wherein the step of selectively operatively coupling one light emitting diode corresponding to each pair of the plurality of pairs of light emitting diodes to a corresponding wavelength conversion device of a plurality of wavelength conversion devices comprises simultaneously disposing the plurality of wavelength conversion devices.

20. The method of claim 11, further comprising providing an epoxy based adhesive to physically couple the plurality of pairs of homogeneous light emitting diodes to the sensor substrate.