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Patient-ventilator synchronization using dual phase sensors

  • US 6,910,480 B1
  • Filed: 09/14/2000
  • Issued: 06/28/2005
  • Est. Priority Date: 09/15/1999
  • Status: Expired due to Term
First Claim
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1. A method of providing synchronized ventilatory support to a patient comprising the steps of:

  • providing an apparatus to deliver ventilatory support to a patient, the apparatus comprising an airflow sensor and a respiratory effort sensor;

    determining at least one instantaneous phase of respiration of the patient continuously at least during inspiration at least in part from both measured respiratory airflow and a signal from a respiratory effort sensor;

    calculating a desired pressure value using the determined phase and a desired ventilation pressure amplitude; and

    delivering ventilation to said patient in accordance with said desired pressure value.

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