RESPIRATORY MONITORING WITH CANNULA RECEIVING FIRST RESPIRATORY AIRFLOWS AND SECOND RESPIRATORY AIRFLOWS

• US 20070113847A1
• Filed: 12/20/2006
• Published: 05/24/2007
• Est. Priority Date: 11/22/2005
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Tham, Robert, Tzanetakis, Andreas, Acker, Jaron, Bilek, Kristopher
• Application Number:
  US11/613,997
• Publication Number:
  US 20070113847A1
• Time in Patent Office: Days
• US Class Current: 128/204.180
• CPC Class Codes: A61M 16/00 Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means A61H31/00
• CPC Class Codes: A61M 16/022 Control means therefor
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0627 with sealing means on a part of the body other than the face, e.g. helmets, hoods or domes
• CPC Class Codes: A61M 16/0666 Nasal cannulas or tubing devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02
• CPC Class Codes: A61M 16/0677 Gas-saving devices therefor
• CPC Class Codes: A61M 16/085 Gas sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• 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 2210/0625 Mouth
• CPC Class Codes: A61M 2230/40 Respiratory characteristics
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)

Abstract

A cannula receives i) first respiratory airflows and second respiratory airflows into separate chambers, and ii) ambient airflows. Another receives i) first respiratory airflows and second respiratory airflows into separate chambers, and ii) interface airflows. And another i) first respiratory airflows and second respiratory airflows into separate chambers from a subject, and ii) interface airflow from an area near a cannula. Corresponding respiratory monitoring methods receive the same.

Claims

1. A respiratory monitoring apparatus, comprising:

a cannula configured to receive i) first respiratory airflows and second respiratory airflows into separate chambers, and ii) ambient airflows.

2. A respiratory monitoring apparatus, comprising:

a cannula configured to receive i) first respiratory airflows and second respiratory airflows into separate chambers, and ii) interface airflows.

3. A respiratory monitoring apparatus, comprising:

a cannula configured to receive i) first respiratory airflows and second respiratory airflows into separate chambers from a subject, and ii) interface airflows from an area near said cannula.

4. The apparatus of claim 3, wherein said area is sealed from airflows external from said area.

5. The apparatus of claim 3, wherein said area comprises a mask, hood, or helmet.

6. The apparatus of claim 3, wherein said cannula is configured to receive said first respiratory airflows from a nose of said subject.

7. The apparatus of claim 3, wherein said cannula is configured to receive said second respiratory airflows from a mouth of said subject.

8. The apparatus of claim 3, wherein said cannula is configured to receive said first respiratory airflows from a nose of said subject and said second respiratory airflows from a mouth of said subject.

9. The apparatus of claim 3, wherein said cannula is configured to receive i) said first respiratory airflows or said second respiratory airflows or both and ii) said interface airflows on opposing sides of a partition internally disposed within said cannula.

10. The apparatus of claim 3, wherein said cannula is configured to receive said interface airflows through an orifice disposed on an external surface of said cannula.

11. The apparatus of claim 3, wherein said cannula is configured to receive said interface airflows in direct connection through said cannula.

12. The apparatus of claim 3, wherein said first respiratory airflows and said interface airflows are directed to a differential pressure transducer to determine pressure differentials between said first respiratory airflows and said interface airflows.

13. The apparatus of claim 12, wherein said differential pressure transducer is integrated with, proximal, or distal said cannula.

14. The apparatus of claim 12, wherein said pressure differentials are directed to a ventilator.

15. The apparatus of claim 14, wherein said ventilator is configured to respond to said pressure differentials.

16. The apparatus of claim 12, wherein said differential pressure transducer is configured to effectuate a change in a breathing circuit of said subject in response to said pressure differentials.

17. The apparatus of claim 3, wherein said second respiratory airflows and said interface airflows are directed to a differential pressure transducer to determine pressure differentials between said second respiratory airflows and said interface airflows.

18. The apparatus of claim 17, wherein said differential pressure transducer is integrated with, proximal, or distal said cannula.

19. The apparatus of claim 17, wherein said pressure differentials are directed to a ventilator.

20. The apparatus of claim 19, wherein said ventilator is configured to respond to said pressure differentials.

21. The apparatus of claim 17, wherein said differential pressure transducer is configured to effectuate a change in a breathing circuit of said subject in response to said pressure differentials.

22. The apparatus of claim 3, wherein said first respiratory airflows and said interface airflows are directed to a first differential pressure transducer to determine first pressure differentials between said first respiratory airflows and said interface airflows, and said second respiratory airflows and said interface airflows are directed to a second differential pressure transducer to determine second pressure differentials between said second respiratory airflows and said interface airflows.

23. The apparatus of claim 22, wherein at least one of said first differential pressure transducer or said second differential pressure transducer or both is integrated with, proximal, or distal said cannula.

24. The apparatus of claim 22, wherein at least one of said first pressure differentials or said second pressure differentials or both is directed to a ventilator.

25. The apparatus of claim 24, wherein said ventilator is configured to respond to at least one of said first pressure differentials or said second pressure differentials or both.

26. The apparatus of claim 22, wherein at least one of said first differential pressure transducer or said second differential pressure transducers or both is configured to effectuate a change in a breathing circuit of said subject in response to said first pressure differentials or said second pressure differentials or both.

27. The apparatus of claim 3, wherein said first respiratory airflows and said second respiratory airflows are combined to form combined respiratory airflows and said combined respiratory airflows and said interface airflows are directed to a differential pressure transducer to determine pressure differentials between said combined respiratory airflows and said interface airflows.

28. The apparatus of claim 27, wherein said differential pressure transducer is integrated with, proximal, or distal said cannula.

29. The apparatus of claim 27, wherein said pressure differentials are directed to a ventilator.

30. The apparatus of claim 29, wherein said ventilator is configured to respond to said pressure differentials.

31. The apparatus of claim 27, wherein said differential pressure transducer is configured to effectuate a change in a breathing circuit of said subject in response to said pressure differentials.

32. A respiratory monitoring method, comprising:

receiving i) first respiratory airflows and second respiratory airflows into separate chambers, and ii) ambient airflows.

33. A respiratory monitoring method, comprising:

receiving i) first respiratory airflows and second respiratory airflows into separate chambers, and ii) interface airflows.

34. A respiratory monitoring method, comprising:

receiving i) first respiratory airflows and second respiratory airflows into separate chambers from a subject, and ii) interface airflows from an area near a cannula.

35. The method of claim 34, wherein said area is sealed from airflows external from said area.

36. The method of claim 34, wherein said area comprises a mask, hood, or helmet.

37. The method of claim 34, wherein said cannula is configured to receive at least one or more of said first respiratory airflows or said second respiratory airflows or both.

38. The method of claim 37, wherein said cannula is configured to receive said first respiratory airflows from a nose of said subject.

39. The method of claim 37, wherein said cannula is configured to receive said second respiratory airflows from a mouth of said subject.

40. The method of claim 37, wherein said cannula is configured to receive said first respiratory airflows from a nose of said subject and said second respiratory airflows from a mouth of said subject.

41. The method of claim 34, wherein said cannula is configured to receive said interface airflows.

42. The method of claim 34, wherein said cannula is configured to receive said interface airflows in direct connection through said cannula.

43. The method of claim 34, wherein said interface airflows are received in open connection with said area.

44. The method of claim 34, further comprising:

determining pressure differentials between said first respiratory airflows and said interface airflows.

45. The method of claim 44, wherein a differential pressure transducer is configured to determine said pressure differentials.

46. The method of claim 44, wherein said pressure differentials are directed to a ventilator.

47. The method of claim 46, wherein said ventilator is configured to respond to said pressure differentials.

48. The method of claim 44, further comprising:

effectuating a change in a breathing circuit of said subject in response to said pressure differentials.

49. The method of claim 34, further comprising:

determining pressure differentials between said second respiratory airflows and said interface airflows.

50. The method of claim 49, wherein a differential pressure transducer is configured to determine said pressure differentials.

51. The method of claim 49, wherein said pressure differentials are directed to a ventilator.

52. The method of claim 51, wherein said ventilator is configured to respond to said pressure differentials.

53. The method of claim 49, further comprising:

effectuating a change in a breathing circuit of said subject in response to said pressure differentials.

54. The method of claim 34, further comprising:

determining first pressure differentials between said first respiratory airflows and said interface airflows; and

determining second pressure differentials between said second respiratory airflows and said interface airflows.

55. The method of claim 54, wherein at least one of a first differential pressure transducer is configured to determine said first pressure differentials and a second differential pressure transducer is configured to determine said second pressure differentials or both.

56. The method of claim 54, wherein at least one of said first pressure differentials or said second pressure differentials or both is directed to a ventilator.

57. The method of claim 56, wherein said ventilator is configured to respond to at least one of said first pressure differentials or said second pressure differentials or both.

58. The method of claim 54, further comprising:

effectuating a change in a breathing circuit of said subject in response to at least one of said first pressure differentials or said second pressure differentials or both.

59. The method of claim 34, further comprising:

combining said first respiratory airflows and said second respiratory airflows to form combined respiratory airflows.

60. The method of claim 59, further comprising:

determining pressure differentials between said combined respiratory airflows and said interface airflows.

61. The method of claim 60, wherein a differential pressure transducer is configured to determine said pressure differentials.

62. The method of claim 60, wherein said pressure differentials are directed to a ventilator.

63. The method of claim 62, wherein said ventilator is configured to respond to said pressure differentials.

64. The method of claim 60, further comprising:

effectuating a change in a breathing circuit of said subject in response to said pressure differentials.