Patent ID: 9550037
Date: 2017-01-24
CPC Classifications: A61M,G16H

Claim:
1. A ventilator that provides a flow of gas for delivery to an airway of a subject, the ventilator comprising: a flow generating system adapted to generate a gas flow having a plurality of properties that facilitate respiration of a subject; a processor adapted to control the flow generating system to control one or more of the plurality of properties of the gas flow; and a patient interface that is readily accessible to the subject and is adapted to receive a selection of an adjustment from the subject for at least a selected one of the properties of the gas flow, wherein the processor is configured to make at least the selected one of the properties of the gas flow (a) adjustable via the patient interface, and (b) restricted to adjustments to current levels of the selected one of the properties that fall within a predetermined acceptable range for the selected one of the properties to maintain a safety of ventilation for the subject, such that: (i) when the selected one of the properties of the gas flow will remain within the predetermined acceptable range to maintain the safety of the ventilation after the selected adjustment received via the patient interface is made, the processor controls the flow generating system to make the selected adjustment, and (ii) when the selected one of the properties of the gas flow will fall outside of the predetermined acceptable range to maintain the safety of the ventilation after the selected adjustment received via the patient interface is made, the processor does not control the flow generating system to make the selected adjustment which prevents an improper adjustment that could expose the subject to risks to health and/or safety, wherein the processor is configured to determine the predetermined acceptable range for the selected one of the properties of the gas flow based on a current value of a second one of the properties of the gas flow, wherein the processor changes the predetermined acceptable range for the selected one of the properties of the gas flow in response to a change in the current value of the second one of the properties of the gas flow.