Method and apparatus for increasing therapy compliance

• US 9,579,480 B2
• Filed: 12/16/2015
• Issued: 02/28/2017
• Est. Priority Date: 11/06/2006
• Status: Active Grant

• Current Assignee: Fisher & Paykel Healthcare Limited
• Original Assignee: Fisher & Paykel Healthcare Limited
• Inventors: Simon, Andrew Paul Maxwell, Briscoe, Hayden Owen, Randolph, Robin Lynn, Potharaju, Venkata Subbarao, Stanton, Christie Jayne, Sun, Yi-Cheng, Frew, Samuel, Worthington, Steven John, Dickinson, Philip John, Haxton, Cameron Jon
• Primary Examiner(s): Yu, Justine
• Assistant Examiner(s): Stuart, Colin W
• Application Number:
  US14/971,638
• Publication Number:
  US 20160101256A1
• Time in Patent Office: 440 Days
• Field of Search: 128/200.24, 128/203.12, 128/203.17, 128/203.16, 128/203.26, 128/203.27, 128/204.14, 128/204.17, 128/204.18
• US Class Current: 1/1
• CPC Class Codes: A61M 16/0066 Blowers or centrifugal pumps
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 16/10 Preparation of respiratory gases or vapours
• CPC Class Codes: A61M 16/107 in the inspiratory path
• CPC Class Codes: A61M 16/1075 by influencing the temperature A61M16/1045 takes precedence
• 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 16/16 Devices to humidify the respiration air A61M16/1045 takes precedence
• CPC Class Codes: A61M 2039/1022 additionally providing electrical connection
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2205/21 insensitive to tilting or inclination, e.g. spill-over prevention
• CPC Class Codes: A61M 2205/36 related to heating or cooling
• CPC Class Codes: A61M 2205/3606 cooled
• CPC Class Codes: A61M 2205/362 by gas flow
• CPC Class Codes: A61M 2205/3653 by Joule effect, i.e. electric resistance
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2209/06 Packaging for specific medical equipment
• CPC Class Codes: A61M 39/1055 Rotating or swivel joints in general F16L27/00

Abstract

A breathing assistance unit for providing pressurized heated humidified air to a user increases user compliance. The breathing assistance unit generates positive emotional and cognitive states of a user about the therapy.

Claims

1. A positive airway pressure device configured to improve patient compliance by providing an improved user-friendliness and by reducing cognitive dissonance as a barrier to therapy, the positive airway pressure device comprising:

a housing having a volume of less than 0.008 m³, the housing comprising an outer surface, the outer surface comprising a front wall having at least a portion that rises vertically and angles horizontally rearward as it rises, a rear wall, a first side wall extending between the front wall and the rear wall, and an opening comprising a humidification compartment;

a heater plate configured to generate heat, the heater plate disposed at a bottom of the humidification compartment;

a removable humidification chamber configured to be received by and at least partially enclosed in the humidification compartment, the humidification chamber having a lid, a heat-conducting base, a humidifier inlet port configured to fluidly couple to a blower input port, and a humidifier outlet port configured to fluidly couple to a blower output port, the humidifier inlet and outlet ports disposed on a top portion of the humidification chamber, the blower input port and the blower output port disposed horizontally on a wall of the humidification compartment, the humidification compartment having a ledge and the humidification chamber having a slot, wherein in response to the humidification chamber being received by the humidification compartment the ledge and the slot complementarily engage to orient the humidification chamber within the humidification compartment causing thermal communication between the heat-conducting base and the heater plate, fluid communication between the humidifier inlet port and the blower input port, and fluid communication between the humidifier outlet port and the blower output port;

an ambient air inlet in fluid communication with ambient air and extending through the first side wall;

a blower unit disposed within the housing and in fluid communication with the ambient air inlet, the blower unit configured to cause ambient air to pass through the humidifier inlet port into the humidification chamber;

an airflow outlet extending at least partially from the rear wall, the airflow outlet in fluid communication with the humidifier outlet port, the airflow outlet configured to engage a removable elbow connector, the elbow connector configured to rotate relative to the housing; and

a power supply comprising a power cord adapted to be plugged into a power supply outlet, the power supply in electrical communication with the blower unit and the heater plate,

wherein any horizontal cross-sectional area of the housing does not exceed 40,000 mm².

2. The positive airway pressure device of claim 1, wherein the blower input port includes a first deformable seal and the blower output port includes a second deformable seal.

3. The positive airway pressure device of claim 1, wherein the ambient air inlet comprises a replaceable filter.

4. The positive airway pressure device of claim 1, wherein the lid is removable.

5. The positive airway pressure device of claim 1, wherein the lid is hinged, the lid having a clip configured to removably engage with a complementary catch on the humidification compartment.

6. The positive airway pressure device of claim 1, wherein the humidification chamber is adapted to hold at least 420 ml of water.

7. The positive airway pressure device of claim 1, wherein the housing has a volume of less than 0.006 m³.

8. The positive airway pressure device of claim 1, wherein the depth of the housing is less than 190 mm.

9. The positive airway pressure device of claim 1, wherein the outer surface of the housing comprises a generally rectangular bottom surface.

10. The positive airway pressure device of claim 9, wherein the bottom surface has a surface area of less than 40,000 mm².

11. The positive airway pressure device of claim 1, wherein a housing height is less than 160 mm.

12. The positive airway pressure device of claim 1, wherein the housing occupies less than 15% of a surface having a width of 480 mm and a depth of 480 mm.

13. The positive airway pressure device of claim 1, wherein the front wall having at least the portion that rises vertically and angles horizontally rearward as it rises curves horizontally rearward at a bottom of the portion.

14. A positive airway pressure device configured to generate favorable emotional and cognitive states of a user with respect to positive airway pressure therapy, the positive airway pressure device comprising:

a housing having a volume of less than 0.006 m³, the housing comprising an outer surface, the outer surface comprising a front wall having at least a portion that rises vertically and angles horizontally rearward as it rises, a rear wall, a first side wall extending between the front wall and the rear wall, and an opening comprising a humidification compartment;

a humidification chamber having a heat-conducting base;

an ambient air inlet in the housing to receive ambient air;

a fan unit in the housing and in fluid connection with the ambient air inlet, the fan unit configured to draw in ambient air from the ambient air inlet and to generate an air flow;

an ambient air outlet in the humidification compartment and in fluid connection with the fan unit, the ambient air outlet configured to make a separable fluid connection with a humidification chamber inlet to provide the air flow into the humidification chamber, the ambient air outlet positioned horizontally on a wall of the humidification compartment and surrounded by a first gasket configured to form a first removable seal with the humidification chamber inlet;

a humidified air return in the humidification compartment and in fluid connection with the humidification chamber, the humidified air return configured to make a separable fluid connection with a humidification chamber outlet to provide a humidified air flow from the humidification chamber, the humidification chamber inlet and outlet disposed on a top portion of the humidification chamber, the humidified air return positioned horizontally on a wall of the humidification compartment and surrounded by a second gasket configured to form a second removable seal with the humidified air return;

a humidified air outlet extending at least partially from the rear wall and in fluid connection with the humidified air return, the humidified air outlet configured to make fluid connection with a breathing conduit for delivery of humidified air to the user; and

a chamber heater in a bottom of the humidification compartment configured to vaporize liquid water in the humidification chamber to provide water vapor to the air flow passing through the humidification chamber,

wherein the humidification compartment is configured to accommodate the humidification chamber, the humidification chamber being removable and engagable with the humidification compartment by way of a motion of engagement, the motion of engagement urging the base of the humidification chamber adjacent and in thermal connection with the chamber heater, the motion of engagement also making the separable connections between the ambient air outlet and the humidification chamber inlet and between the humidified air return and the humidification chamber outlet.

15. The positive airway pressure device of claim 14, wherein the humidified air outlet is configured to receive a removable elbow connector, the elbow connector configured to rotate relative to the housing and to make fluid connection with the breathing conduit for delivery of humidified air to the user.

16. The positive airway pressure device of claim 14, wherein the humidification compartment has a ledge and the humidification chamber has a slot and in response to the motion of engagement of the humidification chamber with the humidification compartment the ledge and the slot complementarily engage to orient the humidification chamber within the humidification compartment.

17. The positive airway pressure device of claim 14, wherein the first and second gaskets comprise silicone gaskets.

18. The positive airway pressure device of claim 14, wherein any horizontal cross-sectional area of the housing is less than 40,000 mm².

19. The positive airway pressure device of claim 14, wherein the ambient air inlet comprises a replaceable filter.

20. The positive airway pressure device of claim 14, comprising:

a control display, positioned on the front wall, the control display configured to display a plurality of menu and submenu options; and

a control knob, positioned on the front wall and in communication with the control display, the control knob configured to rotate in a clockwise direction and in an anticlockwise direction, the control knob configured to scroll between the plurality of menu and submenu options, the control knob configured to be depressed to choose one of the plurality of menu and submenu options displayed on the control display.

21. The positive airway pressure device of claim 20, wherein the control display facilitates playing of sound or music files from a removable memory source.

22. The positive airway pressure device of claim 14, wherein the front wall having at least the portion that rises vertically and angles horizontally rearward as it rises curves horizontally rearward at a bottom of the portion.