US 11,832,935 B2
Device, system and method for caloric intake detection
Francesco Sartor, Eindhoven (NL); Gabriele Papini, Eindhoven (NL); and Zihan Wang, Eindhoven (NL)
Assigned to VERSUNI HOLDING B.V., Eindhoven (NL)
Appl. No. 16/323,982
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Aug. 14, 2017, PCT No. PCT/EP2017/070549
§ 371(c)(1), (2) Date Feb. 7, 2019,
PCT Pub. No. WO2018/033504, PCT Pub. Date Feb. 22, 2018.
Claims priority of application No. 16184732 (EP), filed on Aug. 18, 2016.
Prior Publication US 2019/0167154 A1, Jun. 6, 2019
Int. Cl. A61B 5/113 (2006.01); A61B 5/00 (2006.01); A61B 5/08 (2006.01); A61B 5/11 (2006.01)
CPC A61B 5/113 (2013.01) [A61B 5/0806 (2013.01); A61B 5/0816 (2013.01); A61B 5/11 (2013.01); A61B 5/1118 (2013.01); A61B 5/4866 (2013.01); A61B 5/6831 (2013.01); A61B 5/721 (2013.01); A61B 5/7267 (2013.01); A61B 5/1135 (2013.01); A61B 5/6824 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A device for caloric intake detection due to digestion, said device comprising:
a respiration input for obtaining a respiration signal indicating respiration of a subject,
an activity input for obtaining activity data indicating physical activity of the subject, and
an analysis unit for analyzing the obtained respiration signal and activity data by:
filtering at least one artefact in the obtained respiration signal to obtain a clean respiration signal, wherein the at least one artefact includes swallowing,
determining one or more respiration signal features from the obtained clean respiration signal,
determining the subject is at rest based on the obtained activity data,
selecting subsequent time windows, wherein the selected subsequent time windows are overlapping time windows, of the obtained clean respiration signal,
detecting one or more changes of the one or more determined respiration signal feature among the selected subsequent time windows when the subject is at rest, wherein said one or more changes include changes of a group of changes including:
an increase in respiration frequency,
an increase of an amplitude of the clean respiration signal,
a decrease of an inter-breath interval,
an increase of an amplitude of a dominant frequency in a frequency spectrum of the clean respiration signal, and
a change in a respiratory variability, and
detecting a period of caloric intake due to digestion by the subject if one or more of said one or more changes have been detected during said period.