US 12,011,256 B2
Device and method for determining gestational age
Zilma Silveira Nogueira Reis, Belo Horizonte (BR); and Rodney Nascimento Guimarães, São Félix (BR)
Assigned to UNIVERSIDADE FEDERAL DE MINAS GERAIS—UFMG, (BR); and FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE MINAS GERAIS—FAPEMIG, (BR)
Appl. No. 16/346,833
Filed by UNIVERSIDADE FEDERAL DE MINAS GERAIS—UFMG, Belo Horizonte (BR); and FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE MINAS GERAIS—FAPEMIG, Belo Horizonte (BR)
PCT Filed Nov. 1, 2017, PCT No. PCT/IB2017/056786
§ 371(c)(1), (2) Date May 1, 2019,
PCT Pub. No. WO2018/083602, PCT Pub. Date May 11, 2018.
Claims priority of application No. 10 2016 025602 0 (BR), filed on Nov. 1, 2016; and application No. 10 2017 023568 8 (BR), filed on Oct. 31, 2017.
Prior Publication US 2020/0178847 A1, Jun. 11, 2020
Int. Cl. A61B 5/103 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/1032 (2013.01) [A61B 5/0075 (2013.01); A61B 5/4362 (2013.01); A61B 2503/02 (2013.01); A61B 2503/045 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A device for determining gestational age of a newborn, said device comprising a holder and at least one computer, said holder configured to enclose at least one light emitter element and at least one sensor element,
wherein the at least one light emitter element is configured to shine a light beam of 440-635 nm wavelength, and
wherein the at least one sensor element is configured to capture part of a light signal emitted by the at least one light emitter element and reflected or diffused by the foot of the newborn, and
wherein the at least one sensor element is configured to convert the light signal into a light intensity measurement, and
wherein the at least one sensor element is positioned at a distance of 2-4 mm from the at least one light emitter element; and
the at least one computer configured to:
receive the light intensity measurement, determine an erythema index based on the light intensity measurement, and
determine gestational age by inputting the light intensity measurement, the erythema index, and one or more parameters selected from the group consisting of gender, a use of phototherapy, birth weight, and incubator status into a multivariate equation.