US 11,448,640 B2 · Respiratory gas sensor system with color detection

Abstract

A gas analyzer for measuring a respiratory gas component includes an emitter that transmits infrared (IR) radiation through a measurement chamber containing respiration gas, and at least one IR detector configured to receive at least a portion of the IR radiation transmitted through the measurement chamber and to generate radiation measurement data based on the received IR radiation. A light source is configured to emit light onto a color indicator, wherein the color indicator is one of a predefined set of colors. A color detector is configured to detect light reflected by a color indicator so as to identify color information. The controllers configured to determine a respiratory gas component concentration within the measurement chamber based on the color information and the radiation measurement data.

Claims20

Dependent claims

A gas analyzer for measuring a respiratory gas component, the gas analyzer comprising:

an emitter that transmits infrared (IR) radiation through a measurement chamber containing respiration gas;
at least one IR detector configured to receive at least a portion of the IR radiation transmitted through the measurement chamber and to generate radiation measurement data;
a light source separate from the emitter configured to emit light onto a color indicator, wherein the color indicator is one of a predefined set of colors;
a color detector separate from the IR detector configured to detect light reflected by the color indicator so as to identify color information;
and
a controller configured to determine a respiratory gas component concentration within the measurement chamber based on the color information and the radiation measurement data.

3 more elements

A respiratory gas sensor system for measuring a respiratory gas component, the respiratory gas sensor system comprising:

an airway adapter providing a measurement chamber for respiratory gases, wherein the airway adapter includes a color indicator that is one of a predefined set of colors;
a gas analyzer configured to fit with the airway adapter and measure a respiratory gas component concentration in the measurement chamber, the gas analyzer including:
a light source configured to emit light onto the color indicator, wherein the light source is separate from an emitter used to measure the respiratory gas component in the measurement chamber;
a color detector configured to detect light reflected by the color indicator so as to identify color information, wherein the color detector is separate from a detector used to generate radiation measurement data regarding the respiratory gas component in the measurement chamber;
and
a controller configured to automatically identify a zero-point value based on the color information, and then to utilize the zero-point value to determine the respiratory gas component concentration.

3 more elements

Dependencies are inferred from the claim text.

Respiratory gas sensor system with color detection

Life of this patent

Respiratory gas sensor system with color detection

Life of this patent

Abstract

Claims20