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Method and apparatus for ventilatory therapy

  • US 4,773,411 A
  • Filed: 05/08/1986
  • Issued: 09/27/1988
  • Est. Priority Date: 05/08/1986
  • Status: Expired due to Term
First Claim
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1. A method of providing ventilatory assistance to patients afflicted with impaired spontaneous respiration capability comprising the steps of:

  • providing a continuous supply of breathing gas to the airway of such a patient;

    coincident with said providing step, maintaining the airway pressure of such a patient substantially constantly at an elevated base pressure level above ambient atmosphere pressure in a manner to permit substantially continuous spontaneous respiration while the patient'"'"'s airway pressure is maintained at said elevated base pressure;

    intermittently reducing the airway pressure of such a patient from said elevated base pressure level to a threshold pressure level not substantially less than ambient atmospheric pressure;

    maintaining the airway pressure of such a patient substantially at said threshold pressure level for a time period of predetermined duration; and

    returning the airway pressure of such patient to said elevated base pressure level.

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