Method and apparatus for the control and independent monitoring

Details Method and apparatus for the control and independent monitoring Method and apparatus for the control and independent monitoring

1993-05-21

1995-12-05

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820421, 12820523, A61M 1600, A62B 700, A62B 900, F16K 3102

Patent

active

054719771

ABSTRACT:
A method and apparatus for independent monitoring of a flow-through quantity and, potentially, of a concentration of a gas flow that is extremely small in comparison to a respiratory gas flow is provided. The valve for the control of this small gas flow can not be controlled via the overall gas flow. In order to be able to simply and reliably monitor the flow-through quantity and the concentration of this small gas flow without a gas analyzer and independently of gas flow regulators that are usually present, it is provided that the small gas flow be separately measured and compared to a value derived from the respiratory gas flow. Given the presence of prescribable criteria, an alarm is triggered and the flow-through quantity of the small gas flow is, for example, interrupted.

REFERENCES:
patent: 4191952 (1980-03-01), Schreiber et al.
patent: 4215409 (1980-07-01), Strowe
patent: 4241732 (1980-12-01), Berndtsson
patent: 4328823 (1982-05-01), Schreiber
patent: 4380233 (1983-04-01), Caillot
patent: 4905685 (1990-03-01), Olsson et al.
patent: 4928684 (1990-05-01), Breitenfelder
Siemens AG Brochure entitled "The innovative solution for advanced ventilatory treatment" Servo Ventilator 300.

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