US 10,376,189 B2
Substance concentration correction systems and methods
Yonatan Gerlitz, Herzliya (IL); Alexander Ostritsky, Rishon le Zion (IL); and Rotem Gerlitz, Herzliya (IL)
Assigned to GlucoVista, Inc., Fairfield, NJ (US)
Filed by GlucoVista, Inc., Fairfield, NJ (US)
Filed on Mar. 16, 2016, as Appl. No. 15/72,090.
Claims priority of provisional application 62/133,787, filed on Mar. 16, 2015.
Prior Publication US 2016/0270702 A1, Sep. 22, 2016
Int. Cl. A61B 5/1455 (2006.01); A61B 5/145 (2006.01); A61N 5/00 (2006.01); G01J 3/02 (2006.01); G01J 3/08 (2006.01); G01J 3/10 (2006.01); G01J 5/00 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/1455 (2013.01) [A61B 5/14532 (2013.01); A61B 5/7203 (2013.01); A61B 5/7246 (2013.01); A61B 5/7278 (2013.01); G01J 3/021 (2013.01); G01J 3/0294 (2013.01); G01J 3/08 (2013.01); G01J 3/108 (2013.01); A61B 2562/0233 (2013.01); G01J 3/0291 (2013.01); G01J 2005/0048 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A substance concentration correction system comprising:
an infrared radiation detector having a sensitive area that receives infrared radiation from a body external to the correction system;
a filter assembly and an optical assembly that produce an aggregate emission of infrared radiation, a first portion of the aggregate emission being incident on the sensitive area;
a mirror assembly including a mirror and being changeable between a correcting configuration and a measuring configuration so that, in the correcting configuration, a second portion of the aggregate emission is reflected by the mirror, which produces a mirror signal incident on the sensitive area, and the mirror assembly obstructs the external body infrared radiation from reaching the sensitive area and, in the measuring configuration, the mirror assembly allows the external body infrared radiation onto the sensitive area;
the filter assembly including a peak filter passing a peak signal with a wavelength where the substance has peak emission/absorption and a reference filter passing a reference signal with a wavelength where the substance has negligible emission/absorption, the peak filter and the reference filter being selectively alignable with the detector so that the external body infrared radiation passes through the peak filter in the measuring configuration for the peak signal and the mirror signal passes through the same peak filter in the correcting configuration for the peak signal and so that the external body infrared radiation passes through the reference filter in the measuring configuration for the reference signal and the mirror signal passes through the same reference filter in the correcting configuration for the reference signal; and
the optical assembly being configured so that the external body infrared radiation passes through the optical assembly in the measuring configuration for the peak and reference signals and the mirror signal passes through the same optical assembly in the correcting configuration for the peak and reference signals.