Pressure control in a blower-based ventilator

Details Pressure control in a blower-based ventilator Pressure control in a blower-based ventilator

1996-08-30

1997-12-09

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820421, 12820423, A61M 1600

Patent

active

056949235

ABSTRACT:
A valving arrangement for use with or for a blower-based ventilator system, such as a pressure support ventilator, and a pressure support ventilator having such a valving arrangement, in which blower output can be controlled in such a manner that desired levels of pressure are able to be provided without excessive waste of blower output flow. In one preferred embodiment, a first valve is provided that serves to restrict blower flow, without venting the same from the system, along with a second valve for relieving pressure as needed. Also contemplated herein are methods for controlling such a valving arrangement.

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: 5535738 (1996-07-01), Estes et al.

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