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DEVICE FOR ACOUSTICALLY REPRODUCING THE RESPIRATORY FUNCTION FOR A RESPIRATOR

  • US 20070208267A1
  • Filed: 12/11/2006
  • Published: 09/06/2007
  • Est. Priority Date: 03/04/2006
  • Status: Abandoned Application
First Claim
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1. A device for acoustically reproducing the respiratory function for a respirator, with a patient respiration circuit, the device comprising:

  • a noise generator;

    a volume flow sensor device, which determines the volume flow in the patient respiration circuit and generates an electric signal representing the volume flow;

    a volume flow evaluating unit, which is set up to pick up the volume flow signal and to generate, as a function of the volume flow signal, a control signal for the noise generator in such a way that an acoustic signal with a loudness rising or falling with a rising or falling volume flow is generated;

    a microphone; and

    an evaluating unit connected to said microphone, said evaluating unit generating a measure for an instantaneous ambient noise level on the basis of a microphone signal by averaging over at least one period of time and to increase or reduce the loudness of the acoustic signal with rising or falling ambient noise level as a preset monotonic function of said measure.

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