Respiratory component measurement system with indicating elements

• US 9,521,963 B2
• Filed: 12/29/2009
• Issued: 12/20/2016
• Est. Priority Date: 05/13/2008
• Status: Active Grant

• Current Assignee: Philips RS North America LLC (Koninklijke Philips N.V.)
• Original Assignee: RIC INVESTMENTS LLC (Respironics Incorporated)
• Inventors: Esposito, Anthony James, Jaffe, Michael Brian
• Primary Examiner(s): Anderson, Lynne
• Assistant Examiner(s): DITMER, KATHRYN ELIZABETH
• Application Number:
  US12/648,824
• Publication Number:
  US 20100168599A1
• Time in Patent Office: 2,548 Days
• Field of Search: 128/200.24, 128/202.22, 128/202.27, 128/204.21, 128/204.23, 600/532, 600/538
• US Class Current: 1/1
• CPC Class Codes: A61B 5/061 Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body A61B1/00158 takes precedence
• CPC Class Codes: A61B 5/0833 Measuring rate of oxygen consumption
• CPC Class Codes: A61B 5/0836 Measuring rate of CO2 production
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/021 operated by electrical means A61M16/202 – A61M16/205 take precedence
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 16/085 Gas sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 16/161 with means for measuring the humidity
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0036 in the breathing tube and used in both inspiratory and expiratory phase
• CPC Class Codes: A61M 2016/102 Measuring a parameter of the content of the delivered gas
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2016/103 the CO2 concentration
• CPC Class Codes: A61M 2016/1035 the anaesthetic agent concentration
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/276 preventing unwanted use
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3317 : Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 2205/332 : Force measuring means
• CPC Class Codes: A61M 2205/3368 : Temperature
• CPC Class Codes: A61M 2205/581 : by audible feedback
• CPC Class Codes: A61M 2205/583 : by visual feedback
• CPC Class Codes: A61M 2230/432 : partial CO2 pressure (P-CO2)
• CPC Class Codes: A61M 2230/435 : partial O2 pressure (P-O2)
• CPC Class Codes: A61M 2230/437 : the anaesthetic agent concentration
• CPC Class Codes: G01F 1/36 : the pressure or differential pressure being created by the use of flow constriction
• CPC Class Codes: G01F 15/18 : Supports or connecting means for meters

Abstract

A respiratory component measurement system that includes an airway adapter adapted to be placed in fluid communication with an airway of a patient and a sensor element in physical communication with the airway adapter. The sensor element is adapted to detect an orientation related characteristic of the airway adapter, a motion related characteristic of the airway adapter, or both. A respiratory component sensor is also adapted to be disposed on the airway adapter so as to measure a characteristic associated with a flow of gas through the airway adapter. An indicating element coupled to the respiratory component sensor is adapted to output a representation of the orientation related characteristic.

Claims

1. A respiratory component measurement system comprising:

an airway adapter adapted to be placed in fluid communication with an airway of a patient;

a housing that is complementary constructed to fit around the airway adapter, the housing including

an orientation sensing means enclosed within the housing for detecting occurrences of an orientation related characteristic of the airway adapter, and

a respiratory component sensing means operatively coupled to the airway adapter for measuring a characteristic associated with a flow of gas through the airway adapter;

a comparing means for comparing the detected occurrences of the orientation related characteristic to a threshold value that is set based on the measured characteristic associated with the flow of gas through the airway adapter and for producing a result of the comparing; and

an indicating means coupled to the comparing means for outputting a representation of the result of the comparing.

2. The system according to claim 1, wherein the detected orientation related characteristic includes an orientation of the airway adapter, a position of the airway adapter, a change of the orientation of the airway adapter, and a change of the position of the airway adapter, or any combination thereof.

3. The system according to claim 1, wherein the indicating means includes a display element configured to display the representation of the result.

4. The system according to claim 3, wherein the display element comprises an LED, LCD, OLED or any combination thereof.

5. The system according to claim 1, wherein the comparing means changes the threshold value based on the measured characteristic associated with the flow of as through the airway adapter.

6. The system according to claim 5, wherein the sensing means comprises an accelerometer, inclinometer, electrolytic sensor, liquid tilt sensor, magnetoresistive sensor, gyroscope or any combination thereof.

7. The system according to claim 5, wherein the comparing means dynamically changes the threshold value based on the measured characteristic associated with the flow of gas through the airway adapter.

8. The system according to claim 1, wherein the representation of the result provides an indication whether a detected occurrence exceeds the threshold value.

9. The system according to claim 1, wherein the respiratory component sensing means is a flow sensor, volume sensor, gas sensor, humidity sensor, temperature sensor, pressure sensor, or any combination thereof operatively coupled to the airway adapter.

10. The system according to claim 9, wherein the respiratory component sensing means is a humidity sensor configured to detect moisture content of the gas flow through the airway adapter and the comparing means sets the threshold value based on the detected moisture content.

11. The system according to claim 10, wherein the comparing means decreases the threshold value based on a detected increase in the moisture content.

12. The system according to claim 1, wherein the respiratory component sensing means is integral with the airway adapter or separable from the airway adapter.

13. The system according to claim 1, wherein the orientation sensing means is configured to detect forces imparted on the airway adapter and compare each of the forces to a corresponding threshold to determine if the forces imparted are likely to impair the ability of the system to produce at least one of a reliable and accurate measurement.

14. A respiratory component measurement system comprising:

an airway adapter adapted to be placed in fluid communication with an airway of a patient;

a housing that is complementary constructed to fit around the airway adapter on only three sides, the housing having a length and a width wherein the length is longer than the width and the length extends perpendicular to a longitudinal axis of the airway adapter, the housing including

an orientation sensor enclosed within the housing configured to detect occurrences of an orientation related characteristic of the airway adapter, and

respiratory component sensor operatively coupled to the airway adapter and configured to measure a characteristic associated with a flow of gas through the airway adapter;

a processor operatively coupled to the orientation sensor and the respiratory component sensor and configured to compare the detected occurrences of the orientation related characteristic to a threshold value that is set based on the measured characteristic associated with the flow of gas through the airway adapter and to produce a result of the comparing; and

an indicator coupled to the processor and configured to output a representation of the result of the comparing.

15. The system according to claim 14, wherein the orientation sensor is configured to detect forces imparted on the airway adapter and compare each of the forces to a corresponding threshold to determine if the forces imparted are likely to impair the ability of the system to produce at least one of a reliable and accurate measurement.

16. The system according to claim 14, wherein the processor is configured to change the threshold value based on the measured characteristic associated with the flow of gas through the airway adapter.

17. The system according to claim 16, wherein the processor is configured to dynamically change the threshold value based on the measured characteristic associated with the flow of gas through the airway adapter.

18. The system according to claim 14, wherein the respiratory component sensor is a humidity sensor configured to detect moisture content of the gas flow through the airway adapter and the processor is configured to set the threshold value based on the detected moisture content.

19. The system according to claim 18, wherein the processor is configured to decrease the threshold value based on a detected increase in the moisture content.

20. A method of measuring respiratory component comprising the acts of:

providing an airway adapter adapted to be placed in fluid communication with an airway of a patient;

providing a housing that is complementarily constructed to fit around the airway adapter, the housing including an orientation sensor enclosed within the housing for detecting an orientation related characteristic of the airway adapter and a respiratory component sensor for measuring a characteristic associated with a flow of gas through the airway adapter;

detecting occurrences of an orientation related characteristic of the airway adapter with the orientation sensor;

measuring a characteristic associated with a flow of gas through the airway adapter with the respiratory component sensor;

comparing the detected occurrences of the orientation related characteristic associated with the flow of gas through the airway adapter to a threshold value that is set based on the measured characteristic;

producing a result of the comparing; and

indicating a representation of the result of the comparing.

21. The method according to claim 20, wherein the orientation related characteristic includes an orientation of the airway adapter;

a position of the airway adapter, a change of the orientation of the airway adapter, a change of the position of the airway adapter, or any combination thereof.

22. The method according to claim 20, wherein the indicating the representation of the result of the comparing comprises communicating with a display element the result of the comparing.

23. The method according to claim 22, wherein the display element comprises an LED, LCD, OLED or any combination thereof.

24. The method according to claim 22, wherein the measured characteristic is a moisture content of the gas flow through the airway adapter and the method further comprises an act of dynamically changing the threshold value based on the measured moisture content.

25. The method according to claim 24, wherein the representation of the result of the comparing provides an indication whether the orientation related characteristic exceeds the threshold value.

26. The method according to claim 20, wherein the respiratory component sensing means is integral with the airway adapter or separable from the airway adapter.

27. The method according to claim 20, wherein the respiratory component is detected with a flow sensor, volume sensor, gas sensor, humidity sensor, temperature sensor, pressure sensor, or any combination thereof operatively coupled to the airway adapter.