US 12,245,869 B2
Wavelength and bandwidth selection for diffuse reflective spectroscopy based gingivitis detection
Olaf Thomas Johan Antonie Vermeulen, Oss (NL); Steven Charles Deane, Cambridge (GB); Lucas Petrus Henricus Scheffers, Utrecht (NL); Estelle Julie Dorothée Bernard-Fichet, Cambridge (GB); and Adrianus Wilhelmus Dionisius Maria Van Den Bijgaart, Helvoirt (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 17/275,226
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Sep. 9, 2019, PCT No. PCT/EP2019/073912
§ 371(c)(1), (2) Date Mar. 11, 2021,
PCT Pub. No. WO2020/053110, PCT Pub. Date Mar. 19, 2020.
Claims priority of provisional application 62/729,466, filed on Sep. 11, 2018.
Prior Publication US 2022/0047206 A1, Feb. 17, 2022
Int. Cl. A61B 5/00 (2006.01)
CPC A61B 5/4552 (2013.01) [A61B 5/0075 (2013.01); A61B 5/0088 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A system for detecting inflammation in tissue, comprising:
a light emitter configured to deliver light to gingival tissue;
a diffuse reflective spectroscopy probe having a source-detector distance between 300 μm-2000 μm;
a plurality of detectors configured to detect diffuse light reflected from the gingival tissue, the plurality of detectors configured to detect:
a first wavelength that is less than 615 nm and having a first bandwidth; and
second wavelengths greater than 615 nm and having a second bandwidth, wherein said second bandwidth is greater than said first bandwidth;
a third wavelength greater than said second wavelength and having a third bandwidth, wherein said third bandwidth is greater than said second bandwidth; and
a controller comprising an inflammation detection unit, said controller configured to receive input from each of the plurality of detectors for detecting tissue inflammation.