When a person with sleep apnea uses a CPAP machine, they wear a mask that covers their nose and/or mouth. The machine is connected to the mask via a tube, which delivers the pressurized air. The air pressure is adjusted to the individual’s needs, determined by a sleep specialist or ...
A bias flow of air or oxygen was adjusted using a rotameter with the outflow tubing connected to a humidifier (model MR740; Fisher & Paykel Healthcare, Auckland, NZ). The inspiratory limb of the patient/subject circuit was constructed of a 50-cm length of 4.8-mm inner diameter (ID) (...
A bias flow of air or oxygen was adjusted using a rotameter with the outflow tubing connected to a humidifier (model MR740; Fisher & Paykel Healthcare, Auckland, NZ). The inspiratory limb of the patient/subject circuit was constructed of a 50-cm length of 4.8-mm inner diameter (ID) (...
FIG. 6 is a graph of carbon dioxide measured from exhaled gas of a respiratory therapy system as a function of time. DETAILED DESCRIPTION FIG. 1 is a schematic view of a respiratory therapy system10including a ventilator12, an optional humidifier14and a patient circuit16. It is worth noting...
The structure of a mechanical ventilator is relatively simple, comprising an air–oxygen blender, unidirectional valves, a microcontroller system for parameter control and adjustments, a breathing circuit, and an integrated humidifier [4,5,6]. Despite its critical role in saving lives, prolonged use...