Method and device for controlling a respirator for therapeutic t

Details Method and device for controlling a respirator for therapeutic t Method and device for controlling a respirator for therapeutic t

1997-07-30

1999-03-16

Asher, Kimberly L.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820421, 12820422, A61M 1600

Patent

active

058817247

ABSTRACT:
A method of controlling a respirator for therapeutic treatment of sleep aa includes the step of continuously measuring a) a phase angle of a time difference between respiratory flow and respiratory pressure of a patient and b) a pressure amplitude of the patient. The individual respiratory resistance is determined based on the measured pressure amplitude by oscilloresistometry. The respiratory gas pressure is controlled based on the phase angle, the pressure amplitude, and the respiratory resistance. Significant changes of the phase angle are filtered from the signal of the phase angle. A control signal is produced based on the significant changes for controlling the respiratory gas pressure.

REFERENCES:
patent: 3961627 (1976-06-01), Ernst et al.
patent: 5551419 (1996-09-01), Froehlich et al.
patent: 5617846 (1997-04-01), Graetz et al.
patent: 5794614 (1998-08-01), Gruenke et al.

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