Method for controlling a ventilator and ventilation device

• US 20070044805A1
• Filed: 08/24/2006
• Published: 03/01/2007
• Est. Priority Date: 08/26/2005
• Status: Abandoned Application

• Current Assignee: Weinmann Gerate Fur Medizin GmbH & Co. KG
• Original Assignee: Weinmann Gerate Fur Medizin GmbH & Co. KG
• Inventors: Wedler, Wolfgang, Brandmeier, Mark, Feldhahn, Karl
• Application Number:
  US11/509,834
• Publication Number:
  US 20070044805A1
• Time in Patent Office: Days
• US Class Current: 128/207.140
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0633 with forehead support
• CPC Class Codes: A61M 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/08 Bellows; Connecting tubes having means for taking samples G01N1/22; Water traps; Patient circuits
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 16/125 Diluting primary gas with ambient air
• CPC Class Codes: A61M 16/16 Devices to humidify the respiration air A61M16/1045 takes precedence
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3553 remote, e.g. between patient's home and doctor's office
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/3584 using modem, internet or bluetooth
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/42 Reducing noise
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 2230/202 partial carbon oxide pressure, e.g. partial dioxide pressure (P-CO2)
• CPC Class Codes: A61M 2230/204 partial carbon monoxide pressure (P-CO)
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/208 : pH-value

Abstract

A method for controlling a ventilator, wherein at least one ventilation-dependent parameter is measured and evaluated by a control unit for the control of a ventilator. At least one operating parameter of the ventilator is changed as a function of the measured parameter. At least one constituent of the blood of the user is measured noninvasively as the ventilation-dependent parameter.

Claims

1. A method for controlling a ventilator, the method comprising measuring at least one breathing-dependent parameter and evaluated in the parameter by a control unit, and changed at least one operating parameter of the ventilator as a function of the measured parameter, further comprising determining at least one parameter of the blood of the user noninvasively as a breathing-dependent parameter.

2. A method according to claim 1, wherein the breathing-dependent parameter is measured noninvasively by at least one sensor positioned on the skin of the patient.

3. A method according to claim 1, comprising determining a fractional content of the parameter in the blood.

4. A method according to claim 3, wherein the measured fractional content of the blood is measured indirectly by analysis of the expiratory gas.

5. A method according to claim 1, wherein the content of carbon dioxide in the blood is determined.

6. A method according to claim 1, wherein the content of oxygen in the blood is determined.

7. A method according to claim 1, wherein the content of hemoglobin in the blood is determined.

8. A method according to claim 1, wherein the content of components of the hemoglobin in the blood is determined.

9. A method according to claim 1, further comprising changing the operating parameter of the ventilator within an automatic control circuit, wherein the data on the constituents of the blood are supplied as setpoints and actual values.

10. A method according to claim 1, wherein, to implement the automatic control, strategies are adjusted as a function of the measurement results.

11. A method according to claim 1, wherein a mode selection is carried out when the operating parameter is changed.

12. A method according to claim 1, wherein the operating parameter is changed autonomously by the control unit.

13. A method according to claim 1, wherein operator inputs are evaluated by the control unit.

14. A method according to claim 1, wherein measurement data of the sensor are evaluated continuously by the control unit.

15. A method according to claim 1, wherein the control unit evaluates measurement data of the sensor only within predefined time intervals.

16. A method according to claim 1, wherein a strategy is assigned to a certain disease condition.

17. A method according to claim 1, wherein stored strategies and corresponding settings and bandwidths are assigned to specific disease conditions.

18. Ventilation device comprising a control unit, a breathing gas source, and at least one sensor for detecting a breathing-dependent parameter, wherein the sensor is configured for the noninvasive measurement of at least one constituent of the blood of the user.

19. A device according to claim 18, wherein the sensor is configured to be placed on the skin of the user.

20. A device according to claim 18, wherein the sensor is configured to perform an indirect measurement of the constituent of the blood by analysis of the expiratory gas.

21. A device according to claim 18, wherein the sensor is positioned on a bandage.

22. A device according to claim 18, wherein the sensor is positioned on a clip.

23. A device according to claim 22, wherein the clip is adapted to be positioned on a finger of the user.

24. A device according to claim 22, wherein the clip is adapted to be positioned on the ear of the user.

25. A device according to claim 18, wherein the sensor is positioned on the edge of the breathing mask.

26. A device according to claim 18, wherein the sensor is positioned on straps of the breathing mask.