Combination CPAP and resuscitation systems and methods

• US 9,999,742 B2
• Filed: 04/10/2013
• Issued: 06/19/2018
• Est. Priority Date: 04/10/2012
• Status: Active Grant

• Current Assignee: Fisher & Paykel Healthcare Limited
• Original Assignee: Fisher & Paykel Healthcare Limited
• Inventors: Millar, Gavin Walsh, Beaumont, Christopher Leigh
• Primary Examiner(s): Ho, (Jackie) Tan-Uyen T
• Assistant Examiner(s): Paciorek, Jonathan
• Application Number:
  US14/391,864
• Publication Number:
  US 20150075524A1
• Time in Patent Office: 1,896 Days
• CPC Class Codes: A61M 16/0003 Accessories therefor, e.g. sensors, vibrators, negative pressure
• CPC Class Codes: A61M 16/0006 with means for creating vibrations in patients' airways
• CPC Class Codes: A61M 16/0066 Blowers or centrifugal pumps
• 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 16/04 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 16/0841 for sampling
• CPC Class Codes: A61M 16/105 Filters A61M16/047, A61M16/22 take precedence; water traps A61M16/08
• CPC Class Codes: A61M 16/107 in the inspiratory path
• CPC Class Codes: A61M 16/109 the humidifying liquid or the beneficial agent
• CPC Class Codes: A61M 16/1095 in the connecting tubes
• 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 16/161 with means for measuring the humidity
• CPC Class Codes: A61M 16/162 Water-reservoir filling system, e.g. automatic
• CPC Class Codes: A61M 16/20 Valves specially adapted to medical respiratory devices
• CPC Class Codes: A61M 16/201 Controlled valves
• CPC Class Codes: A61M 16/204 used for inhalation control
• CPC Class Codes: A61M 16/209 Relief valves
• CPC Class Codes: A61M 2016/0027 : pressure meter
• CPC Class Codes: A61M 2016/003 : with a flowmeter
• CPC Class Codes: A61M 2205/3334 : Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3348 : Pressure measurement using a water column
• CPC Class Codes: A61M 2205/3368 : Temperature
• CPC Class Codes: A61M 2205/75 : with filters
• CPC Class Codes: A61M 2209/084 : Supporting bases, stands for equipment
• CPC Class Codes: A61M 2240/00 : Specially adapted for neonatal use

Abstract

A combination positive airway pressure (PAP) or continuous positive airway pressure (CPAP) and resuscitation system and related methods. The systems can be well-suited for use in providing CPAP therapy for a neonate or infant patient, with the ability to also provide resuscitation therapy at a peak inspiratory pressure (PIP) as needed or desired without switching to another system or switching the patient interface. The system can include an expiratory pressure device capable of regulating a positive end expiration pressure (PEEP) of the system, which preferably can also induce pressure oscillations relative to a mean PEEP.

Claims

1. A combination infant positive airway pressure and resuscitation system, comprising:

an integrated inspiratory pressure device comprising a resuscitator and a humidifier, wherein the resuscitator is capable of regulating a flow of breathing gas to a desired peak inspiration pressure, and wherein the humidifier humidifies the flow of breathing gas;

an expiratory pressure device configured to receive expiratory gases from an expiratory circuit and regulate the expiratory gases to a positive end expiration pressure;

an occlusion device within the expiratory circuit, the occlusion device being separate from and upstream of the expiratory pressure device, wherein the occlusion device is manually-operated and configured to permit selective occlusion of the expiratory circuit at desired times to substantially completely block the flow of the expiratory gases through the expiratory circuit downstream of the occlusion device such that the pressure within the inspiratory circuit rises to the peak inspiration pressure of the resuscitator.

2. The combination infant positive airway pressure and resuscitation system of claim 1, wherein the resuscitator is separable from the humidifier.

3. The combination infant positive airway pressure and resuscitation system of claim 2, wherein the resuscitator is integrated with a first housing and the humidifier is integrated with a second housing.

4. The combination infant positive airway pressure and resuscitation system of claim 3, further comprising a flow generator that generates the flow of breathing gas.

5. The combination infant positive airway pressure and resuscitation system of claim 3, wherein the flow generator is integrated with the second housing.

6. The combination infant positive airway pressure and resuscitation system of claim 1, wherein the expiratory pressure device comprises a water resistance valve.

7. The combination infant positive airway pressure and resuscitation system of claim 6, wherein the water resistance valve is adjustable to permit adjustment of the positive end expiration pressure.

8. The combination infant positive airway pressure and resuscitation system of claim 1, wherein the occlusion device comprises a manual push button valve.

9. The combination infant positive airway pressure and resuscitation system of claim 1, wherein the occlusion device comprises a clamp.

10. The combination infant positive airway pressure and resuscitation system of claim 1, wherein the occlusion device is located less than 500 millimeters from a patient end of the expiratory circuit.

11. A combination infant positive airway pressure and resuscitation system, comprising:

an inspiratory pressure device that outputs a flow of breathing gas at a desired peak inspiration pressure;

an inspiratory circuit that receives the flow of breathing gas from the inspiratory pressure device;

a patient interface that receives the flow of breathing gas from the inspiratory circuit, wherein the patient interface is configured to deliver the flow of breathing gas to an infant patient and receive expiratory gases from the patient;

an expiratory circuit that receives the expiratory gases from the patient interface;

an expiratory pressure device that receives expiratory gases from the expiratory circuit and regulates the expiratory gases to a positive end expiration pressure;

an occlusion device within the expiratory circuit, the occlusion device being separate from and upstream of the expiratory pressure device, wherein the occlusion device is manually-operated and configured to permit selective occlusion of the expiratory circuit at desired times to block the flow of the expiratory gases through the expiratory circuit to a sufficient extent downstream of the occlusion device such that the pressure within the inspiratory circuit rises to the peak inspiration pressure.

12. The combination infant positive airway pressure and resuscitation system of claim 11, wherein the expiratory pressure device comprises a water resistance valve.

13. The combination infant positive airway pressure and resuscitation system of claim 12, wherein the water resistance valve is adjustable to permit adjustment of the positive end expiration pressure.

14. The combination infant positive airway pressure and resuscitation system of claim 11, wherein the occlusion device comprises a manual push button valve.

15. The combination infant positive airway pressure and resuscitation system of claim 11, wherein the occlusion device comprises a clamp.

16. The combination infant positive airway pressure and resuscitation system of claim 11, further comprising a humidifier positioned within the inspiratory circuit between the inspiratory pressure device and the patient interface.

17. The combination infant positive airway pressure and resuscitation system of claim 11, wherein the occlusion device is located less than 500 millimeters from the patient interface along the expiratory circuit.

18. The combination infant positive airway pressure and resuscitation system of claim 11, wherein the expiratory circuit comprises an expiratory hose coupled to the patient interface and the occlusion device is located within the expiratory hose.

19. A breathing circuit for a combination infant positive airway pressure and resuscitation system, comprising:

an expiratory circuit that is configured for connection to a patient interface to receive expiratory gases from the patient interface;

an inspiratory circuit that is configured for connection to the patient interface to deliver a flow of breathing gas to the patient interface;

an occlusion device within the expiratory circuit, the occlusion device being separate from and upstream of an expiratory pressure device, wherein the occlusion device is manually-operated and configured to permit selective occlusion of the expiratory circuit at desired times to block the flow of the expiratory gases through the expiratory circuit to a sufficient extent downstream of the occlusion device such that the pressure within the system rises above a positive end expiration pressure.

20. The breathing circuit for a combination infant positive airway pressure and resuscitation system of claim 19, wherein the expiratory pressure device receives expiratory gases from the expiratory circuit and regulates the expiratory gases to a positive end expiration pressure.

21. The breathing circuit for a combination infant positive airway pressure and resuscitation system of claim 19, wherein the occlusion device comprises a manual push button valve.

22. The breathing circuit for a combination infant positive airway pressure and resuscitation system of claim 19, wherein the occlusion device comprises a clamp.

23. The breathing circuit for a combination infant positive airway pressure and resuscitation system of claim 19, wherein the occlusion device is located less than 500 millimeters from the patient interface along the expiratory circuit.

24. The breathing circuit for a combination infant positive airway pressure and resuscitation system of claim 19, wherein the occlusion device is located in the expiratory circuit.