METHODS, SYSTEMS AND DEVICES FOR HUMIDIFYING A RESPIRATORY TRACT

• US 20140182583A1
• Filed: 10/29/2013
• Published: 07/03/2014
• Est. Priority Date: 09/30/2010
• Status: Active Grant

• Current Assignee: Breathe Technologies, Inc. (Baxter International Inc.)
• Original Assignee: Breathe Technologies, Inc. (Baxter International Inc.)
• Inventors: Wondka, Anthony D., Cipollone, Joseph, Kassanis, George A., Allum, Todd W., Brambilla, Enrico
• Granted Patent: US 9,358,358 B2
• Time in Patent Office: Days
• US Class Current: 128/200.19
• CPC Class Codes: A61M 11/005 using ultrasonics spraying or atomising liquids using ultrasonic vibrations in general B05B17/06
• CPC Class Codes: A61M 11/02 operated by air or other gas pressure applied to the liquid or other product to be sprayed or atomised sprayers for horticulture A01G, A01H; killing insects A01M; air humidifying by nozzles F24F6/14, F24F6/18; cooling by spraying F28B, F28C
• CPC Class Codes: A61M 11/042 electrical
• CPC Class Codes: A61M 11/06 of the injector type
• CPC Class Codes: A61M 16/0012 by Venturi means
• CPC Class Codes: A61M 16/0057 Pumps therefor
• CPC Class Codes: A61M 16/026 specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
• CPC Class Codes: A61M 16/04 Tracheal tubes catheters in general A61M25/00
• 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 16/0825 with ball-sockets
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 16/0883 Circuit type
• CPC Class Codes: A61M 16/1045 Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas
• CPC Class Codes: A61M 16/1075 by influencing the temperature A61M16/1045 takes precedence
• CPC Class Codes: A61M 16/108 before being humidified or mixed with a beneficial agent
• CPC Class Codes: A61M 16/1095 in the connecting tubes
• CPC Class Codes: A61M 16/127 by Venturi effect, i.e. entrainment mixers
• CPC Class Codes: A61M 16/16 Devices to humidify the respiration air A61M16/1045 takes precedence
• CPC Class Codes: A61M 16/161 with means for measuring the humidity
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0033 : electrical
• CPC Class Codes: A61M 2205/3368 : Temperature
• CPC Class Codes: A61M 2205/7527 : liquophilic, hydrophilic

Abstract

Systems and methods are provided for humidifying ventilation gas. Systems and methods may include a nasal interface apparatus for receiving ventilation gas from gas delivery tubing and for humidifying ventilation gas. The nasal interface apparatus may have one or more channels within the nasal interface to deliver gas from a gas delivery circuit to a patient'"'"'s nose; one or more structures in fluid communication with the one or more channels to direct ventilation gas to the patient'"'"'s nose; and a hygroscopic material within the nasal interface in the flow path of the ventilation gas.

Claims

1-20. -20. (canceled)

21. A system for humidifying ventilation gas, the system comprising:

a ventilator;

a patient circuit in fluid communication with the ventilator at a proximal end and fluidly connected to a patient airway at a distal end, wherein the patient circuit has an inner diameter of approximately 2-14 mm;

a fluid reservoir;

a humidification device; and

a channel between the humidification device and a distal end of the patient circuit.

22. The system of claim 21, further comprising a patient interface, wherein the patient interface is a nasal interface, an oral interface, or a trans-tracheal interface.

23. The system of claim 21, wherein the fluid is water, a drug solution, or combinations thereof.

24. The system of claim 21, wherein a drug is delivered alternatively with humidification.

25. The system of claim 21, wherein the ventilator is portable.

26. The system of claim 21, wherein the channel ends proximal to an end of the patient circuit, such that a jet venturi created by the gas in the patient circuit entrains vapor from the channel.

27. The system of claim 21, wherein the fluid reservoir is pressurized by gas from the ventilator.

28. The system of claim 21, further comprising a misting screen at a distal end of the channel.

29. The system of claim 28, further comprising a second channel for delivering gas to create a jet prior to the misting screen.

30. The system of claim 21, further comprising a hydrophilic media cartridge within the channel.

31. The system of claim 21, further comprising a capillary force vaporizer.

32. The system of claim 21, further comprising a vibrating mesh nebulizer.

33. The system of claim 21, further comprising an aerosolizing catheter.

34. The system of claim 21, further comprising a gas flow channel surrounding the channel.

35. The system of claim 21, wherein the channel surrounds a gas flow channel.

36. The system of claim 21, further comprising a vortex heat separator for providing hot gas to a humidifier and cold gas to the ventilator.

37. The system of claim 21, wherein delivery of the humidified ventilation gas is servo controlled.

38. The system of claim 21, wherein the humidified ventilation gas is delivered in synchrony with the patient'"'"'s breathing cycle.

39. The system of claim 21, wherein an average flow rate of gas delivered by the ventilator is greater than approximately 6 lpm.

40. The system of claim 21, wherein the delivery of humidified gas is controlled to within 50 to 95% relative humidity to prevent rainout within the patient circuit.

41. A method of treating respiratory and breathing disorders, the method comprising:

providing a ventilation system comprising;

a ventilator;

a patient circuit in fluid communication with the ventilator at a proximal end and fluidly connected to a patient airway at a distal end, wherein the patient circuit has an inner diameter of approximately 2-14 mm;

a fluid reservoir;

a humidification device; and

a channel between the humidification device and a distal end of the patient circuit

providing ventilation gas to a patient.

42. The method of claim 41, further comprising controlling delivery of the humidified ventilation gas with a servo.

43. The method of claim 41, further comprising delivering the humidified ventilation gas in synchrony with the patient'"'"'s breathing cycle.

44. The method of claim 41, further comprising delivering a drug solution alternatively with the humidified ventilation gas.

45. The method of claim 41, wherein an average flow rate of gas delivered by the ventilator is greater than approximately 6 lpm.

46. An apparatus for delivering humidified ventilation gas, the apparatus comprising:

one or more tubes with an inner diameter of approximately 2-14 mm; and

one or more heaters along the length of the one or more tubes, wherein the one or more tubes are adapted to deliver humidified ventilation gas to a patient.

47. The apparatus of claim 46, wherein the one or more heaters are controlled by a controller to deliver heat in synchrony with the patient'"'"'s need and the patient'"'"'s breathing cycle.

48. The apparatus of claim 46, wherein the one or more heaters are controlled by a controller to deliver heat in based on environmental conditions.