초록 ▼

An apparatus is provided for controlling air supplied under pressure to a patient suffering from sleep disorders such as apnoea. The apparatus measures and/or calculates the inspiratory air flow, volume and pressure to the airway. Controlled pressurized air is supplied to the patient's upper anatomi

An apparatus is provided for controlling air supplied under pressure to a patient suffering from sleep disorders such as apnoea. The apparatus measures and/or calculates the inspiratory air flow, volume and pressure to the airway. Controlled pressurized air is supplied to the patient's upper anatomical airway, wherein the apparatus measures the air flow and pressure to the airway. The apparatus determines whether to increase or decrease the pressure to the patient's airway based on a determination of one or more factors, such as the occurrence of hypopnoea, hyperventilation, obstructive or central apnoea, air leakage and acoustical vibrations. Occurrences of events representing a sleep problem may be stored by the apparatus and retrieved by a clinician at a later date.

대표청구항 ▼

The invention claimed is: 1. A method for managing gas delivery to a patient, comprising:delivering gas to a patient;determining a flow amplitude for each of a first plurality of breath cycles;determining a mean of the determined flow amplitudes for the first plurality of breath cycles;determining a

The invention claimed is: 1. A method for managing gas delivery to a patient, comprising:delivering gas to a patient;determining a flow amplitude for each of a first plurality of breath cycles;determining a mean of the determined flow amplitudes for the first plurality of breath cycles;determining a flow amplitude for a particular breath cycle occurring subsequent to the first plurality of breath cycles;identifying the particular breath cycle as a hypoventilated breath cycle if the flow amplitude for the particular breath cycle is less than the product of the determined mean flow amplitude for the first plurality of breath cycles and a first factor; anddetermining whether to increase the pressure of gas delivered to the patient based at least on whether the particular breath cycle is identified as a hypoventilated breath cycle.