公开(公告)号：US10175254B2

公开(公告)日：2019-01-08

申请号：US14902075

申请日：2014-07-16

Applicant: PALO ALTO HEALTH SCIENCES, INC.

Inventor： Leslie E. Mace ,  Elizabeth K. Siegelman ,  Debra L. Reisenthel ,  Simon W. H. Thomas

IPC: A61M21/02 ,  A61B5/08 ,  G01N33/84 ,  G01N21/78 ,  A61B5/00 ,  A61B5/103 ,  A61B5/083 ,  G16H40/63 ,  G16H40/67 ,  G16H40/40 ,  G16H50/20 ,  G16H20/30 ,  G16H20/40 ,  G01N21/31 ,  A61B5/097 ,  A61M21/00 ,  G01N21/77 ,  A61M16/00 ,  H04M1/725

Abstract: Quantitative colorimetric carbon dioxide detection and measurement systems are disclosed. The systems can include a gas conduit, a colorimetric indicator adapted to exhibit a color change in response to exposure to carbon dioxide gas, a temperature controller operatively coupled to the colorimetric indicator and configured to control the temperature of the colorimetric indicator, an electro-optical sensor assembly including a light source or sources adapted to transmit light to the colorimetric indicator, and a photodiode or photodiodes configured to detect light reflected from the colorimetric indicator and to generate a measurement signal, and a processor in communication with the electro-optical sensor assembly. The processor can be configured to receive the measurement signal generated by the electro-optical sensor assembly and to compute a concentration of carbon dioxide based on the measurement signal. Methods for using the systems are also disclosed including providing a breathing therapy to a patient or user.