Patent ID: 11904094
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A single-limb non-invasive ventilator system configured to control oxygen mix pursuant to a target pressure and target oxygen mix, comprising:
a pressure controller configured to generate a total flow trajectory;
an air blower comprising a blower flow controller and a blower speed controller controlling blower flow;
a pressurized oxygen source downstream of the air blower and comprising an oxygen flow controller and a proportional flow valve controlling oxygen flow;
a pair of complimentary flow coupling filters, the pair of complimentary flow coupling filters comprising a blower flow coupling filter and an oxygen flow coupling filter; and
a controller configured to: (i) provide the generated total flow trajectory from the pressure controller to the pair of complimentary flow coupling filters; and (ii) receive an output from each of the blower flow coupling filter and the oxygen flow coupling filter, comprising an input flow trajectory for the blower flow controller and an input flow trajectory for the oxygen flow controller, respectively, wherein the blower flow controller and/or oxygen flow controller adjust, based on the input flow trajectory and the target pressure and target oxygen mix, a blower speed and/or the proportional flow valve.