EP-4740846-A2 - SYSTEMS AND METHODS FOR MODIFYING PRESSURE SETTINGS OF A RESPIRATORY THERAPY SYSTEM

EP4740846A2EP 4740846 A2EP4740846 A2EP 4740846A2EP-4740846-A2

Abstract

A method of modifying pressure settings of a respiratory therapy system comprises supplying pressurized air at a first pressure to a user during a current sleep session; determining a number and/or type of events experienced by the user during a first portion of the current sleep session; and modifying the pressure settings of the respiratory therapy system during a subsequent sleep session portion in response to the number and/or type of events satisfying a threshold. Modifying the pressure settings can include modifying the first pressure to be a modified first pressure for the subsequent sleep session portion, (ii) modifying a difference in pressure between the first pressure and a second pressure for the subsequent sleep session portion, (iii) modifying a rate of change from the first pressure to the second pressure for the subsequent sleep session portion, or (iv) any combination of (i)-(iii).

Inventors

LYON, Alexander Graeme
CHAH, Ehsan
TIRON, Roxana

Assignees

ResMed Sensor Technologies Limited

Dates

Publication Date: 20260513
Application Date: 20220429

Claims (15)

A system comprising: a respiratory therapy system configured to supply pressurized air at at least a first pressure of a predetermined range of pressures to a user via the respiratory therapy system during a current sleep session, the predetermined range of pressures further including at least a second pressure greater than the first pressure; a memory storing machine-readable instructions; and a control system including one or more processors configured to execute the machine-readable instructions to: determine a number of events experienced by the user during at least a portion of the current sleep session, determining a severity of each event experienced by the user during at least the portion of the current sleep session, or both, the respiratory therapy system being configured to increase a pressure of the pressurized air from the first pressure to at least the second pressure in response to the user experiencing one or more events; and based at least in part on the number of events and/or the severity of each event experienced by the user during at least the portion of the current sleep session, modify a difference in pressure between the first pressure and the second pressure of the predetermined range of pressures for a subsequent sleep session and/or modify a rate at which the pressure of the pressurized air increases from the first pressure to the second pressure of the predetermined range of pressures for the subsequent sleep session such that increases in the pressure of the pressurized air in response to the user experiencing one or more events during the subsequent sleep session are based at least in part on the number and/or severity of events experienced by the user during at least the portion of the current sleep session.
The system of claim 1, wherein modifying the difference in pressure between the first pressure and the second pressure for the subsequent sleep session includes modifying the second pressure to be a modified second pressure.
The system of claim 2, wherein the modified second pressure of the subsequent sleep session is greater than the first pressure, the second pressure, or both.
The system of any one of claims 1 to 3, wherein during the current sleep session, a first time period elapses between (i) the pressure beginning to increase from the first pressure and (ii) the pressure reaching the second pressure in response to the use experiencing one or more events.
The system of claim 4, wherein modifying the rate of change from the first pressure to the second pressure for the subsequent sleep session includes modifying the first time period for the subsequent sleep session portion to be a modified first time period.
The system of claim 5, wherein the modified first time period for the subsequent sleep session is less than the first time period for the current sleep session.
The system of any one of claims 1 to 6, wherein is the events experienced by the user during the portion of the current sleep session are weighted based on the pressure of the pressurized air during each event, a body position of the user during each event, a sleep stage of the user during each event, the severity of each event, or any combination thereof.
The system of any one of claims 1 to 7, wherein the one or more processors of the control system are further configured to execute the machine-readable instructions to determine the number and/or severity of events experienced by the user during one or more prior sleep sessions of the user such that the modification of the difference in pressure between the first pressure and the second pressure for the subsequent sleep session and/or the modification of the rate of change from the first pressure to the second pressure for the subsequent sleep session is based further on the number and/or severity of the events experienced by the user the one or more prior sleep sessions.
The system of any one of claims 1 to 8, wherein the one or more processors of the control system are further configured to execute the machine-readable instructions to receive data associated with activities undertaken by the user before the current sleep session, and wherein the modification of the difference in pressure between the first pressure and the second pressure for the subsequent sleep session and/or the modification of the rate of change from the first pressure to the second pressure for the subsequent sleep session are based at least in part on the activities undertaken by the user before the current sleep session.
The system of any one of claims 1 to 9, wherein the one or more processors of the control system are further configured to execute the machine-readable instructions to determine a body position of the user during the subsequent sleep session, and wherein in response to the user being in a first body position, no modifications are made for the subsequent sleep session.
The system of claim 10, wherein in response to the user being in a second body position, one or more of the modifications are made for the subsequent sleep session.
The system of any one of claims 1 to 11, wherein the portion of the current sleep session is a fixed amount of time.
The system of any one of claims 1 to 11, wherein the first pressure is a minimum pressure of the predetermined range of pressures, or a pressure between the minimum pressure of the predetermined range of pressures and a maximum pressure of the predetermined range of pressures.
The system of any one of claims 1 to 13, wherein the predetermined range of pressures includes a minimum pressure, and wherein the one or more processors are further configured to execute the machine-readable instructions to, based at least in part on the number and/or severity of events experienced by the user during at least the portion of the current sleep session, modify the minimum pressure of the predetermined range of pressures for the subsequent sleep session.
The system of any one of claims 1 to 14, wherein during at least the portion of the current sleep session, the respiratory therapy system is configured to decrease the pressure of the pressurized air in response to the user not experiencing any events for an amount of time, and wherein the one or more processors are further configured to execute the machine-readable instructions to, based at least in part on the number and/or severity of events experienced by the user during at least the portion of the current sleep session, modify the amount of time until the pressure of the pressurized air begins to decrease in response to the user not experiencing any events and/or modify a rate at which the pressure of the pressurized air decreases in response to the user not experiencing any events, such that decreases in the pressure of the pressurized air in response to the user not experiencing any events during the subsequent sleep session are based at least in part on the number and/or severity of events experienced by the user during at least the portion of the current sleep session.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of, and priority to, U.S. Provisional Patent Application No. 63/181,829 filed on April 29, 2021, which is hereby incorporated by reference herein in its entirety. TECHNICAL FIELD The present disclosure relates generally to systems and methods for modifying pressure settings of a respiratory therapy system, and more particularly, to systems and methods for modifying pressure settings of a respiratory therapy system for a subsequent portion of a current sleep session or a portion of a subsequent sleep session, based on events experienced during a current sleep session. BACKGROUND Many individuals suffer from sleep-related and/or respiratory disorders such as, for example, Sleep-Disordered Breathing (SDB), which can include Obstructive Sleep Apnea (OSA), Central Sleep Apnea (CSA), other types of apneas such as mixed apneas and hypopneas, and Respiratory Effort Related Arousal (RERA). These individuals may also suffer from other health conditions (which may be referred to as comorbidities), such as insomnia (characterized by, for example, difficult in initiating sleep, frequent or prolonged awakenings after initially falling asleep, and/or an early awakening with an inability to return to sleep), Periodic Limb Movement Disorder (PLMD), Restless Leg Syndrome (RLS), Cheyne-Stokes Respiration (CSR), respiratory insufficiency, Obesity Hyperventilation Syndrome (OHS), Chronic Obstructive Pulmonary Disease (COPD), Neuromuscular Disease (NMD), rapid eye movement (REM) behavior disorder (also referred to as RBD), dream enactment behavior (DEB), hypertension, diabetes, stroke, and chest wall disorders. These individuals are often treated using a respiratory therapy system (e.g., a continuous positive airway pressure (CPAP) system), which delivers pressurized air to aid in preventing the individual's airway from narrowing or collapsing during sleep. However, it can be difficult to effectively manage the pressure of the pressurized air and minimize the amount of disruptions or events the user may experience as they sleep. Thus, it would be advantageous to improve the management of the pressurized air supplied to the user's airway. The present disclosure is directed to solving these and other problems. SUMMARY According to some implementations of the present disclosure, a system comprises a respiratory therapy system, a memory, and a control system. The respiratory therapy system is configured to supply pressurized air at a first pressure of a predetermined range of pressures to a user via the respiratory therapy system during a current sleep session. The predetermined range of pressures further includes at least a second pressure greater than the first pressure. The memory stores machine-readable instructions. The control system includes one or more processors configured to execute the machine-readable instructions to implement a method. The method includes determining a number of events experienced by the user during a first portion of the current sleep session while the pressurized air is supplied at the first pressure, determining a type of each event experienced by the user during the first portion of the current sleep session, or both. The method further includes, in response to the number of events, the type of each event, or both experienced during the first portion of the current sleep session satisfying a threshold, performing one or more modifications. The modifications can include (i) modifying the first pressure to be a modified first pressure for a subsequent sleep session portion of the user, such that in response to a determination that at a beginning of the subsequent sleep session portion, the pressurized air is supplied to the user via the respiratory therapy system at the modified first pressure, (ii) modifying a difference in pressure between the first pressure and the second pressure of the predetermined range of pressures for the subsequent sleep session portion, (iii) modifying a rate of change from the first pressure to the second pressure of the predetermined range of pressures for the subsequent sleep session portion, or (iv) any combination of (i)-(iii). According to some implementations of the present disclosure, a system comprises a respiratory therapy system, a memory, and a control system. The respiratory therapy system is configured to supply pressurized air at a first pressure of a predetermined range of pressures to a user via the respiratory therapy system during a current sleep session. The predetermined range of pressures further includes at least a second pressure greater than the first pressure. The memory stores machine-readable instructions. The control system includes one or more processors configured to execute the machine-readable instructions to implement a method. The method includes determining the number of events experienced by the user during a first portion of the current sleep session while the p