Mainstream Gas Analyzer Configurable To Removably Couple With A Sidestream Gas Sampling Component

• US 20140052014A1
• Filed: 04/02/2012
• Published: 02/20/2014
• Est. Priority Date: 04/26/2011
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Jaffe, Michael Brian
• Granted Patent: US 9,855,010 B2
• Time in Patent Office: Days
• US Class Current: 600/532
• CPC Class Codes: A61B 5/082 Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath A61B5/083, A61B5/091 take precedence
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61B 5/72 Signal processing specially adapted for physiological signals or for diagnostic purposes character recognition, recognising digital ink, document-oriented image-based pattern recognition G06V30/00; recognition or understanding of postal images G06V30/424
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: F04C 2270/041 Controlled or regulated
• CPC Class Codes: G01N 1/2247 Sampling from a flowing stream of gas

Abstract

Systems and methods for analyzing respiratory gas are configured to function in both divertive and non-divertive configurations. A mainstream gas analyzer housing economically and removably couples with a sidestream gas sampling component.

Claims

1. A gas sampling system comprising:

a first housing including a sensor assembly, wherein the sensor assembly is configured to measure a gaseous molecular species in a gas mixture, and wherein the first housing is configured to removably engage an airway adapter configured for insertion into a breathing circuit in fluid communication with a subject; and

a second housing including a pump,

wherein the first housing and the second housing are further configured to removably couple with each other, and engage a sampling cell such that gas within the sampling cell is measured by the sensor assembly, and such that operation of the pump moves gas through the sampling cell, and wherein the first housing and the second housing are coupled through matching physical interface components such that a processing component in the first housing is configured to control operation of the pump in the second housing.

2. The gas sampling system of claim 1, wherein the second housing further includes one selected from the group consisting of (i) second sensor assembly, (ii) a display, and (iii) both a second sensor assembly and a display.

4. The gas sampling system of claim 1, wherein further the physical interface components are configured such that the first housing provides an electrical power interface to the second housing.

3. (canceled)

5. (canceled)

6. A method of analyzing a gas, the method comprising;

removably coupling a first housing including a sensor assembly and a second housing including a pump, wherein the sensor assembly is configured to measure a gaseous molecular species in a gas mixture, wherein the first housing is further configured to removably engage an airway adapter, and wherein the airway adapter is configured for insertion into a breathing circuit in fluid communication with a subject;

removably engaging a sampling cell such that gas within the sampling cell can be measured by the sensor assembly of the first housing, and such that operation of the pump moves gas through the sampling cell; and

measuring by the sensor assembly a gaseous molecular species in a gas mixture within the sampling cell, wherein removably coupling the first housing including the sensor assembly and the second housing including the pump is accomplished through matching physical interface components included in the first housing and included in the second housing, wherein the first housing further includes a processing component configured to control operation of the pump in the second housing, and further comprising;

controlling operation of the pump by the processing component in the first housing.

7. The method of claim 6, wherein the second housing further includes a display, further comprising providing a representation of a measurement by the sensor assembly via the display.

9. The method of claim 6, further wherein removably coupling the first housing including the sensor assembly and the second housing including the pump is accomplished through matching physical interface components included in the first housing and included in the second housing, such that the first housing provides an electrical power interface to the second housing.

8. (canceled)

10. A method of analyzing a gas, the method comprising:

removably engaging an external housing with a sampling cell via matching physical interface components included in the external housing and included in the sampling cell, the external housing including a sensor assembly, wherein the sensor assembly is configured to measure a gaseous molecular species in a gas mixture;

providing an optical path through the sampling cell such that the optical path is available for measurements by the sensor assembly; and

removably coupling the sampling cell with a sampling line, wherein the sampling line is configured to supply gas for measurements by the sensor assembly.

11. The method of claim 10, further comprising:

removably coupling the external housing with a second housing via matching physical interface components included in the external housing and included in the second housing, the external housing further including a processing component and the second housing including a pump such that operation of the pump, controlled by the processing component in the external housing, moves gas through the sampling cell.

12. A system configured to analyze a gas, the system comprising:

first means for measuring a gaseous molecular species in a gas mixture;

second means for housing the first means, further configured to removably engage an airway adapter, wherein the airway adapter is configured for insertion into a breathing circuit in fluid communication a with a subject;

third means for housing a pump

fourth means for removably coupling the second means and the third means, wherein the fourth means comprise matching physical interface components including in the second means and included in the third means, further wherein responsive to being removably coupled via the physical interface components, wherein the second means further includes a processing component configured to control operation of the pump in the third means; and

fifth means for removably engaging a sampling cell such that gas within the sampling cell is analyzed by the first means, and such that operation of the pump moves gas through the sampling cell.

13. The system of claim 12, further comprising:

sixth means for providing a representation of a measurement by the first means.

15. The system of claim 12, wherein the second means includes an eighth means for processing, and wherein the fourth means is further configured such that the second means provides an electrical power interface to the third means.

14. (canceled)