Oxygen mixing in a blower-based ventilator

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

1996-09-03

1997-12-30

Millin, Vincent

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820421, 12820511, A61M 1600

Patent

active

057018839

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.

REFERENCES:
patent: 5148802 (1992-09-01), Sanders et al.
patent: 5239995 (1993-08-01), Estes et al.
patent: 5313937 (1994-05-01), Zdrojkowski
patent: 5433193 (1995-07-01), Sanders et al.
patent: 5452714 (1995-09-01), Anderson et al.
patent: 5535738 (1996-07-01), Estes et al.
patent: 5582163 (1996-12-01), Bonassa

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