Acclimatization therapy for first time users

Patent metadata

Field	Value
Publication number	US-9440037-B2
Application number	US-201313961483-A
Country	US
Kind code	B2
Filing date	Aug 7, 2013
Priority date	Jun 14, 2005
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

Systems, methods, and/or apparatuses for acclimatizing a user to positive airway pressure (PAP) therapy are provided. Generally, a sub-therapeutic treatment pressure is provided initially. It may be ramped up to a full treatment pressure over the course of one or more therapy sessions. The pressure level may be ramped up based on, for example, sleep state, sleep phase, patient compliance with types of treatment (e.g. bilevel vs. CPAP, etc.), clinician input (either at the site, remotely, via pre-programmed smartcards, etc.), etc. Such techniques may be used alone or in combination.

First claim

What is claimed is:

1. A continuous positive airway pressure (CPAP) apparatus for treatment of sleep apnea, the apparatus comprising:
a housing;
a display disposed in the housing;
a blower configured to deliver a flow of pressurized breathable gas at positive air pressure between about 4 and 20 cmH 2 O to a patient;
at least one sensor that is set to detect a measured pressure and/or flow that is associated with the pressurized breathable gas;
at least one controller that is communicably connected to the blower and the at least one sensor, the controller configured to:
detect at least one of: 1) sleep flow limitation, 2) hypopnea, and/or 3) apnea based on the measured pressure and/or flow;
communicate with the blower to auto-adjust the flow and/or pressure of the pressurized breathable gas based on a determined breathing and/or sleep pattern of the patient;
communicate with the blower to ramp the pressure of the pressurized breathable gas over a period of time;
determine a sleep stage of the patient;
responsive to determination of a sleep stage of the patient and based on which sleep stage was determined, communicate with the blower to control a first ramping, which occurs over multiple breathing cycles of the patient, of pressure of the flow of pressurized breathable gas that is applied to the patient during inspiration; and
responsive to determination of a sleep stage of the patient and based on which sleep stage was determined, communicate with the blower to control a second ramping, which occurs over multiple breathing cycles of the patient, of pressure of the flow of pressurized breathable gas that is applied to the patient during expiration,

wherein the first and second ramping are different.

2. The apparatus of claim 1 , further comprising a communication interface that is structured to interface with a portable non-transitory storage medium.

3. The apparatus of claim 1 , further comprising a breathing tube to extend from the housing to a patient interface or mask.

4. The apparatus of claim 1 , wherein the controller is further configured to:
determine whether the patient has transitioned from a sleeping state to an awake state; and
communicate with the blower to decrease a pressure of the flow of pressurized breathable gas to the patient based on the determined transition from the sleeping state to the awake state.

5. The apparatus of claim 4 , wherein the decreased pressure that is based on the determined transition is substantially no pressure or a comfortable awake pressure for the patient.

6. The apparatus of claim 4 , where the blower is further configured to control the flow of pressurized breathable gas to the patient based a second transition from the awake state to the sleeping state.

7. The CPAP apparatus of claim 1 , wherein the second pressure is set higher than the first pressure.

8. A continuous positive airway pressure (CPAP) apparatus for treatment of sleep apnea, the apparatus comprising:
a flow generator configured to deliver a flow of pressurized breathable gas at positive air pressure between about 4 and 20 cmH 2 O to a patient wearing a patient interface device;
at least one pressure and/or flow sensor configured to generate signals of pressure and/or flow based on sensed physical quantity; and
at least one electronic controller electrically coupled to the flow generator and the at least one sensor, the controller configured to:
determine a sleep stage of the patient based on a breathing parameter indicative of the sensed physical quantity;
communicate with the flow generator to control, based on the determined sleep stage, a pressure of the breathable gas that is delivered during inspiration of the patient in a first manner; and
communicate with the flow generator to control, based on the determined sleep stage, a pressure of the breathable gas that is delivered during expiration of the patient in a second manner that is different from the first manner,
wherein a difference between the first and second manner includes applying different pressure ramp characteristics, over multiple breathing cycles by the patient, to the controlled expiration and inspiration pressure of the breathable as that is delivered to the patient.

9. The CPAP apparatus of claim 8 , further comprising a breathing tube that extends from the flow generator to a patient interface or mask.

10. The CPAP apparatus of claim 8 , wherein the electronic controller is further configured to:
determine whether the patient has transitioned from a sleeping state to an awake state; and
communicate with the flow generator to decrease a pressure of the flow of pressurized breathable gas to the patient based on the determined transition from the sleeping state to the awake state.

11. The CPAP apparatus of claim 10 , wherein the decreased pressure that is based on the determined transition from the sleep to awake state is substantially no pressure or a comfortable awake pressure for the patient.

12. The CPAP apparatus of claim 8 , wherein the at least one electronic controller is further configured to:
responsive to determination of the sleep stage, set a target pressure, wherein the pressure ramp characteristics applied according to the first manner ramp more quickly to the target pressure than the pressure ramp characteristics applied according to the second manner.

13. The CPAP apparatus of claim 8 , wherein determination of a sleep stage includes determination of a transition from another sleep stage, the at least one electronic controller further configured to:
responsive to the determination of the transaction from another sleep stage, set an initial pressure for the pressurized breathable gas that is delivered to the patient,
wherein the pressure of the breathable gas that is delivered during inspiration and the pressure of the breathable gas that is delivered during expiration are ramped to a target pressure based on respective pressure ramp characteristics.

14. The CPAP apparatus of claim 8 , wherein the pressure ramp characteristics cause pressure to plateau more quickly for inspiration than expiration.

15. A continuous positive airway pressure (CPAP) apparatus for treatment of sleep apnea, the apparatus comprising:
a flow generator configured to deliver a flow of pressurized breathable gas at positive air pressure between about 4 and 20 cmH 2 O to a patient wearing a patient interface device;
at least one pressure and/or flow sensor configured to sense a physical quantity related to delivery of the pressurized breathable gas; and
at least one electronic controller electrically coupled to the flow generator and the at least one sensor, the controller configured to:
determine a sleep stage of the patient based on signals received from the at least one pressure and/or flow sensor;
in response to determination of a transition to a new sleep stage, automatically control a pressure level of the supplied pressurized breathable gas based on the determined sleep stage; and
in accordance with determination of the transition to the new sleep stage, set a target expiration pressure level and a target inspiration pressure level,

wherein pressure level of the supplied pressurized breathable gas during inspiration is ramped, over multiple breathing cycles of the patient differently to the target inspiration pressure level than how the pressure level of the supplied pressurized breathable gas is ramped, over the multiple breathing cycles of the patient, to the target expiration pressure level.

16. The CPAP apparatus of claim 15 , wherein the target expiration pressure level or

Assignees

• Resmed Ltd

Inventors

• Mulcahy David
• Kwok Philip Rodney
• Somerville William Mcinnes
• Vorreiter David Richard

Classifications

• A61M16/024

  including calculation means, e.g. using a processor · CPC title

• A61M2016/0036

  in the breathing tube and used in both inspiratory and expiratory phase · CPC title

• A61M16/0816

  Joints or connectors · CPC title

• A61M2205/15

  Detection of leaks · CPC title

• A61M16/0069

  the speed thereof being controlled by respiratory parameters, e.g. by inhalation · CPC title