Respiratory Equipment and Method for Controlling Respiratory Equipment

• US 20090107498A1
• Filed: 02/10/2006
• Published: 04/30/2009
• Est. Priority Date: 02/10/2005
• Status: Abandoned Application

• Current Assignee: Weinmann Gerate Fur Medizin GmbH & Co. KG
• Original Assignee: Weinmann Gerate Fur Medizin GmbH & Co. KG
• Inventors: Schwaibold, Matthias, Plattner, Diana, Scholler, Bernd
• Application Number:
  US11/884,152
• Publication Number:
  US 20090107498A1
• Time in Patent Office: Days
• US Class Current: 128/204.230
• CPC Class Codes: A61B 5/085 Measuring impedance of respiratory organs or lung elasticity
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/113 occurring during breathing
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/14535 for measuring haematocrit
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/398 Electrooculography [EOG], e.g. detecting nystagmus; Electroretinography [ERG]
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61M 16/0006 with means for creating vibrations in patients' airways
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/0069 the speed thereof being controlled by respiratory parameters, e.g. by inhalation
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/0683 Holding devices therefor
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2016/0036 in the breathing tube and used in both inspiratory and expiratory phase
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: Y02A 90/10 : Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

The invention relates to a method and a device for operating or controlling respiratory equipment. According to the invention, a respiratory gas source, which can be connected to a patient interface, is coupled to a control unit. The control unit is configured to specify at least two different respiratory modes. The various respiratory modes are determined, selected and used for at least some respiratory disorders according to a current patient-specific requirement. The control unit is configured to automatically execute the control operations.

Claims

1. A ventilator, which has a respiratory gas source that can be connected with a patient interface and a control unit designed for presetting at least two different ventilation modes, wherein the control unit is designed for the automatic determination, selection, and application of the various ventilation modes in at least some respiratory disorders according to a current patient-specific requirement.

2. A ventilator in accordance with claim 1, wherein the control unit is connected to at least one sensor for detecting a parameter.

3. A ventilator in accordance with claim 1, wherein the sensor is designed for detecting a physiological parameter.

4. A ventilator in accordance with claim 1, wherein the sensor is designed for detecting a device-specific parameter.

5. A ventilator in accordance with claim 1, wherein the control unit has an analyzer for signal analysis.

6. A ventilator in accordance with claim 1, wherein a ruleset is used to carry out a pressure adjustment.

7. A ventilator in accordance with claim 6, wherein the ruleset is fixed.

8. A ventilator in accordance with claim 6, wherein the ruleset is user-defined.

9. A ventilator in accordance with claim 1, wherein the control unit comprises an adaptation unit for changing the ventilation mode.

10. A ventilator in accordance with claim 1, wherein the control unit includes an artifact detection system.

11. A ventilator in accordance with claim 1, wherein the analyzer is designed to suppress a mode change when an artifact is detected.

12. A ventilator in accordance with claim 1, wherein the analyzer is designed for detecting inspiratory phases and expiratory phases.

13. A ventilator in accordance with claim 1, wherein the analyzer is designed to analyze at least one parameter related to the flow.

14. A ventilator in accordance with claim 1, wherein the analyzer is designed to analyze at least one parameter related to the pressure.

15. A ventilator in accordance with claim 1, wherein the analyzer has bandpass filtering.

16. A ventilator in accordance with claim 1, wherein the analyzer has a comparator that considers an individual patient history.

17. A ventilator in accordance with claim 1, wherein the analyzer has a comparator that considers preset parameter values.

18. A ventilator in accordance with claim 1, wherein the analyzer has a comparator that considers ideal values.

19. A ventilator in accordance with claim 1, wherein the control unit is designed with a fixed time interval for mode adaptation.

20. A ventilator in accordance with claim 1, wherein the control unit is designed with an adaptive time interval for mode adaptation.

21. A method for controlling a ventilator, which has a respiratory gas source that can be connected with a patient interface and a control unit, and in which at least two different modes of ventilation can be selectively activated by the control unit, wherein the various modes of ventilation are automatically determined, selected, and applied in at least some respiratory disorders according to a current patient-specific requirement.

22. A method in accordance with claim 21, wherein at least one measured value determined by a sensor is supplied to the control unit.

23. A method in accordance with claim 21, wherein a physiological measured value is determined by the sensor.

24. A method in accordance with claim 21, wherein a device-specific measured value is determined by the sensor.

25. A method in accordance with claim 21, wherein a current state of ventilation is evaluated by an analyzer.

26. A method in accordance with claim 21, wherein a pressure adjustment is carried out according to a ruleset.

27. A method in accordance with claim 26, wherein the pressure adjustment is carried out according to a fixed ruleset.

28. A method in accordance with claim 26, wherein the pressure adjustment is carried out according to a user-defined ruleset.

29. A method in accordance with claim 21, wherein the device control system is changed by an adaptation unit.

30. A method in accordance with claim 21, wherein the analyzer performs artifact detection.

31. A method in accordance with claim 21, wherein a change in the ventilation mode is suppressed by the control unit when an artifact is detected.

32. A method in accordance with claim 21, wherein the analyzer detects inspiratory phases and expiratory phases.

33. A method in accordance with claim 21, wherein the analyzer performs an analysis of at least one parameter related to flow.

34. A method in accordance with claim 21, wherein the analyzer performs an analysis of at least one parameter related to pressure.

35. A method in accordance with claim 21, wherein the analyzer performs a bandpass filtering.

36. A method in accordance with claim 21, wherein the analyzer evaluates an individual patient history.

37. A method in accordance with claim 21, wherein the analyzer evaluates preset parameter values.

38. A method in accordance with claim 21, wherein the analyzer evaluates ideal values.

39. A method in accordance with claim 21, wherein a required change in the mode of ventilation is checked at fixed time intervals.

40. A method in accordance with claim 21, wherein a required change in the mode of ventilation is checked at adaptive time intervals.

41. A method in accordance with claim 21, wherein, using a predetermined pressure profile, the current pressure is marked by a marker that accompanies it in time.

42. A method in accordance with claim 21, wherein adjustable weightings are assigned to the detected events, depending on their severity.

43. A method in accordance with claim 21, wherein, when an event occurs, it is supplied to a continuously updated index.

44. A method in accordance with claim 21, wherein, after an adjustable time and, at the same time, the pressure has risen above or fallen below a threshold value that can be set, a pressure adjustment is made.

45. A method in accordance with claim 21, wherein, after a titration, a selection function activates a mode.

46. A method in accordance with claim 21, wherein the measuring signals are continuously recorded.

47. A method in accordance with claim 21, wherein a diagnostic phase and a therapeutic phase are applied in the course of one night.

48. A method in accordance with claim 21, wherein the therapeutic pressure is determined and also applied in the course of one night.

49. A method in accordance with claim 21, wherein the titration pressure to be applied is formed by an evaluation function.

50. A method in accordance with claim 21, wherein, to carry out a pressure adjustment within a preset interval of time, a pressure is first held in an essentially constant interval and is then reduced essentially linearly, and that, as a reaction to the occurrence of an obstructive event, the pressure is raised by a preset difference, and then the same procedure is cyclically repeated.

51. A method in accordance with claim 21, wherein cumulative event values are evaluated during an evaluation phase of the titration.

52. A method in accordance with claim 21, wherein a type of mask to be connected with the ventilator is determined by the result of the titration evaluation.

53. A ventilator, which has a respiratory gas source that can be connected with a patient interface and a control unit designed for presetting at least two different ventilation modes, wherein a sensor for detecting at least one parameter is connected to the control unit, where the control unit is equipped with an event detection system, where the control unit has an analyzer for assigning a weighting to different classes of events, where the analyzer forms an event index within a predeterminable evaluation interval as a function of the frequency of the events per interval of time, and where the control unit predetermines a pressure change as a function of the exceeding of threshold values, such that different threshold values are assigned to different levels of ventilation pressure changes that are to be made.