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High frequency ventilator and method

  • US 4,821,709 A
  • Filed: 03/08/1988
  • Issued: 04/18/1989
  • Est. Priority Date: 08/01/1983
  • Status: Expired due to Term
First Claim
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1. An apparatus for supporting full ventilation in an air breathing animal comprising:

  • means for supplying a respirating gas to an animal at elevated pressure,a linear motor,a diaphragm driven by said linear motor, andcircuit means for producing a high frequency, variable frequency, variable amplitude signal for driving said linear motor to drive said diaphragm to generate a pressure wave in said gas which is polar relative to the static pressure in an airway of said animal, said pressure wave having a positively sloped portion forcing gas into said airway and a negatively sloped portion drawing gas out of said airway.

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