Oxygen mixing in a blower-based ventilator

Details Oxygen mixing in a blower-based ventilator Oxygen mixing in a blower-based ventilator

1997-07-24

2000-09-26

Weiss, John G.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820314, 12820325, 12820421, 12820426, A62B 700, A62B 900, G05B 100

Patent

active

06123074&

ABSTRACT:
An oxygen mixing arrangement for or in a pressure support ventilator, in which a modular oxygen-providing assembly is selectively insertable into a greater respiration apparatus. Mixing accuracy and controllability is maintained by using gas supplies that have a wide range of pressures. Further, oxygen leakage is minimized by connecting the modular oxygen-providing assembly at a point of the respiration circuit of the greater respiration apparatus that is downstream from a valving arrangement normally used for venting patient exhaust flow and for controlling system pressure by venting excess gas flow to the ambient atmosphere.

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