VENTILATION ANALYSIS AND MONITORING

• US 20110105935A1
• Filed: 06/30/2009
• Published: 05/05/2011
• Est. Priority Date: 06/30/2008
• Status: Active Grant

• Current Assignee: Oridion Medical 1987 Limited (Medtronic Plc)
• Original Assignee: Oridion Medical 1987 Limited (Medtronic Plc)
• Inventors: Botesazan, Zion, Colman, Joshua Lewis
• Granted Patent: US 9,987,452 B2
• Time in Patent Office: Days
• US Class Current: 600/532
• CPC Class Codes: A61B 5/0836 Measuring rate of CO2 production
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61M 16/0003 Accessories therefor, e.g. sensors, vibrators, negative pressure
• CPC Class Codes: A61M 16/1005 with O2 features or with parameter measurement
• CPC Class Codes: A61M 2016/003 with a flowmeter
• CPC Class Codes: A61M 2016/103 the CO2 concentration
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)

Abstract

A ventilation analysis system comprising an interface module adapted to receive a carbon dioxide (CO2) signal and a breath flow dynamics signal, and control logic adapted to produce a ventilation indicator, based on a mutual analysis of the CO2 signal and the breath flow dynamics signal. The ventilation indicator may be, for example, an estimated CO2 waveform, an End-Tidal CO2 (ETCO2) value, and/or a minute CO2 value.

Claims

1. A ventilation analysis system comprising:

an interface module adapted to receive a carbon dioxide (CO₂) signal and a breath flow dynamics signal; and

control logic adapted to produce a ventilation indicator, based on a mutual analysis of said CO₂ signal and said breath flow dynamics signal.

2. The ventilation analysis system according to claim 1, wherein said ventilation indicator comprises an estimated CO₂ waveform.

3. The ventilation analysis system according to claim 1, wherein said ventilation indicator comprises an End-Tidal CO₂ (EtCO₂) value.

4. The ventilation analysis system according to claim 1, wherein said ventilation indicator comprises a minute CO₂ value.

5. The ventilation analysis system according to claim 1, further comprising a CO₂ sensor adapted to produce said CO₂ signal.

6. The ventilation analysis system according to claim 5, wherein said CO₂ sensor comprises a wireless CO₂ sensor.

7. The ventilation analysis system according to claim 5, wherein said CO₂ sensor comprises a CO₂ sensor having a response time of 100 milliseconds (ms) or more.

8. The ventilation analysis system according to claim 5, wherein said CO₂ sensor comprises a CO₂ sensor having a response time of 500 ms or more.

9. The ventilation analysis system according to claim 5, wherein said CO₂ sensor comprises a CO₂ sensor having a response time of 900 ms or more.

10. The ventilation analysis system according to claim 1, further comprising a breath flow dynamics sensor adapted to produce said breath flow dynamics signal.

11. The ventilation analysis system according to claim 10, wherein said breath flow dynamics sensor comprises a wireless breath flow dynamics sensor.

12. The ventilation analysis system according to claim 10, wherein said breath flow dynamics sensor comprises a flow sensor.

13. The ventilation analysis system according to claim 10, wherein said breath flow dynamics sensor comprises an acoustic sensor.

14. The ventilation analysis system according to claim 10, wherein said breath flow dynamics sensor comprises a thermal sensor.

15. The ventilation analysis system according to claim 10, wherein said breath flow dynamics sensor comprises a chest movement detector.

16. The ventilation analysis system according to claim 10, wherein said breath flow dynamics sensor comprises a computer-aided video analyzer.

17. The ventilation analysis system according to claim 10, wherein said breath flow dynamics sensor comprises a Doppler radar.

18. The ventilation analysis system according to claim 1, wherein said interface module is further adapted to receive a Saturation of Peripheral Oxygen (SpO₂) signal.

19. The ventilation analysis system according to claim 18, further comprising an SpO₂ sensor adapted to produce said SpO₂ signal.

20. A method for ventilation analysis, the method comprising:

receiving a CO₂ signal and a breath flow dynamics signal; and

mutually analyzing the CO₂ signal and the breath flow dynamics signal, to produce a ventilation indicator.

21. The method according to claim 20, wherein the ventilation indicator comprises an estimated CO₂ waveform.

22. The method according to claim 20, wherein the ventilation indicator comprises an EtCO₂ value.

23. The method according to claim 20, wherein the ventilation indicator comprises a minute CO₂ value.

24. The method according to claim 20, wherein the receiving of the CO₂ signal comprises wirelessly receiving the CO₂ signal.

25. The method according to claim 20, wherein the CO₂ signal comprises discrete Partial Pressure CO₂ (PCO₂) readings taken every 100 ms or more.

26. The method according to claim 20, wherein the CO₂ signal comprises discrete PCO₂ readings taken every 500 ms or more.

27. The method according to claim 20, wherein the CO₂ signal comprises discrete PCO₂ readings taken every 900 ms or more.

28. The method according to claim 20, wherein the receiving of the breath flow dynamics signal comprises wirelessly receiving the breath flow dynamics signal.

29. The method according to claim 20, wherein the breath flow dynamics signal comprises a flow measurement.

30. The method according to claim 20, wherein the breath flow dynamics signal comprises an acoustic measurement.

31. The method according to claim 20, wherein the breath flow dynamics signal comprises a thermal measurement.

32. The method according to claim 20, wherein the breath flow dynamics signal comprises a chest movement measurement.

33. The method according to claim 20, wherein the breath flow dynamics signal comprises a computer-aided video analysis.

34. The method according to claim 20, wherein the breath flow dynamics signal comprises a Doppler radar signal.

35. The method according to claim 20, further comprising receiving an SpO₂ signal.