Method for acclimating a CPAP therapy patient to prescribed pressure

• US 8,011,366 B2
• Filed: 01/13/2005
• Issued: 09/06/2011
• Est. Priority Date: 02/04/2004
• Status: Expired due to Fees

• Current Assignee: Sunrise Medical Hhg Incorporated (Sunrise Medical Incorporated)
• Original Assignee: DeVilbiss Healthcare LLC
• Inventors: Knepper, Michael B.
• Primary Examiner(s): DEMILLE, DANTON D
• Application Number:
  US11/035,124
• Publication Number:
  US 20050166922A1
• Time in Patent Office: 2,427 Days
• Field of Search: 128/204.26, 128/203.14, 128/204.18, 128/204.21, 128/204.23
• US Class Current: 128/204.23
• 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 16/0066 Blowers or centrifugal pumps
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 2016/0024 with an on-off output signal, e.g. from a switch

Abstract

A method for acclimating a CPAP therapy patient to a prescribed pressure while the patient falls asleep. During an initial startup period, the CPAP apparatus applies a therapeutic IPAP pressure to the patient'"'"'s airway and a lower initial EPAP pressure to the patient'"'"'s airway. The EPAP pressure is ramped up to the IPAP pressure over a sufficient time for the patient to fall asleep. In a modified embodiment, both the initial IPAP pressure and the initial EPAP pressure are less than the prescribed therapeutic pressure. The IPAP and EPAP pressures are then independently ramped up to the prescribed therapeutic pressure.

Claims

1. A method for controlling startup of CPAP apparatus which applies an IPAP pressure to a patient'"'"'s airway during inhalation and an EPAP pressure to the patient'"'"'s airway during exhalation, said method comprising the steps of applying a therapeutic IPAP pressure to the patient'"'"'s airway during a startup period, and at the beginning of the startup period applying an EPAP pressure below the therapeutic IPAP pressure to the patient'"'"'s airway and increasing the EPAP pressure to the therapeutic IPAP pressure during the startup period.

2. A method for controlling startup of CPAP apparatus, as set forth in claim 1, and wherein the EPAP pressure is maintained at a predetermined pressure for an initial portion of the startup period and is then increased over time to the prescribed pressure.

3. A method for controlling startup of CPAP apparatus, as set forth in claim 1, and further including the step of maintaining the IPAP pressure and the EPAP pressure at the same level after the startup period.

4. A method for controlling startup of CPAP apparatus which applies an IPAP pressure to a patient'"'"'s airway during inhalation and an EPAP pressure to the patient'"'"'s airway during exhalation, the patient having a predetermined therapeutic airway pressure for reducing or eliminating the occurrence of abnormal sleep events, said method comprising the steps of initially applying an IPAP pressure to the patient'"'"'s airway which is less than the predetermined therapeutic pressure and applying an EPAP pressure to the patient'"'"'s airway which is no greater than the IPAP pressure, during a startup period increasing the IPAP pressure along a first trajectory to the predetermined therapeutic pressure, during the startup period increasing the EPAP pressure along a second trajectory to the predetermined therapeutic pressure, wherein said second trajectory is different from said first trajectory, and wherein the EPAP pressure does not exceeds the IPAP pressure during the startup period.

5. A method for controlling startup of CPAP apparatus, as set forth in claim 4, and wherein the IPAP pressure initially applied to the patient'"'"'s airway is greater than the EPAP pressure initially applied to the patient'"'"'s airway.

6. A method for controlling startup of CPAP apparatus, as set forth in claim 5, and wherein the IPAP pressure is increased to the predetermined therapeutic pressure before the EPAP pressure reaches the predetermined therapeutic pressure.

7. A method for controlling startup of CPAP apparatus, as set forth in claim 4, and wherein the IPAP pressure initially applied to the patient'"'"'s airway is the same pressure as the EPAP pressure initially applied to the patient'"'"'s airway

8. A method for controlling startup of CPAP apparatus, as set forth in claim 7, and wherein the IPAP pressure is increased to the predetermined therapeutic pressure before the EPAP pressure reaches the predetermined therapeutic pressure.