US 12,458,254 B2
System for measuring the presence and/or the concentration of an analysis substance dissolved in a bodily fluid
Andreas Popp, Markgroeningen (DE); and Dieter Kraft, Gerlingen (DE)
Assigned to TRUMPF VENTURE GMBH, Ditzingen (DE)
Filed by TRUMPF Venture GmbH, Ditzingen (DE)
Filed on Nov. 9, 2021, as Appl. No. 17/521,875.
Application 17/521,875 is a continuation of application No. PCT/EP2020/062555, filed on May 6, 2020.
Claims priority of application No. 10 2019 112 346.1 (DE), filed on May 10, 2019.
Prior Publication US 2022/0133185 A1, May 5, 2022
Int. Cl. A61B 5/145 (2006.01); A61B 5/00 (2006.01)
CPC A61B 5/14532 (2013.01) [A61B 5/0068 (2013.01); A61B 5/0075 (2013.01); A61B 5/0077 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A system for measuring the presence and/or the concentration of an analysis substance dissolved in a bodily fluid, the system comprising:
a light source configured to emit excitation light;
an optical device that defines, for the excitation light, an excitation beam path from the light source to a measurement region of a sample and that defines, for scattered light from the measurement region of the sample, a detection beam path from the measurement region of the sample to a detection device;
the detection device configured to detect the scattered light;
wherein the detection device comprises a light-sensitive sensor having a detecting sensor surface, and a filter element arranged in the detection beam path on the detecting sensor surface, wherein the filter element comprises a plurality of narrowband filter regions configured to suppress a transmission of light with wavelengths outside of an analysis wavelength range around a Raman resonance, to be analyzed, of the analysis substance, and wherein each respective narrowband filter region acts as a bandpass filter for a respective wavelength range that is narrower than the analysis wavelength range, wherein the sensor comprises an array of light-sensitive pixels, wherein each respective narrowband filter region is assigned to one pixel group of adjacently arranged pixels, wherein the plurality of narrowband filter regions includes a filter group corresponding to respective central wavelengths that differ from one another, and wherein the central wavelengths are distributed at equidistant intervals over the analysis wavelength range.