Techniques for determining patient airway pressure

摘要: A ventilator is configured to assist a user with breathing, while eliminating the need for extraneous sensors and tubing normally found in prior art ventilators. The relies on predetermined relationship between measurable quantity associated compressed gas maximum pressure of that upon delivery user. may be mass flow rate or within lumen used transport gas, among others. Based relationship, control logic determines whether delivered exceeds allowable pressure. When exceeded, initiates corrective action reduce gas.