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Control of airway pressure during mechanical ventilation

  • US 5,507,282 A
  • Filed: 02/04/1994
  • Issued: 04/16/1996
  • Est. Priority Date: 02/05/1993
  • Status: Expired due to Fees
First Claim
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1. Apparatus for controlling patient airway pressure during exhalation, comprising:

  • valve means,said valve means having first inlet means for connection to an exhalation tube from a patient airway, outlet means for connection to a source of negative pressure, and second inlet means having variable flow control means therein for controlling the flow of gas through said second inlet means, andmeans for controlling gas pressure in said valve means such that a gas pressure gradient between upstream and downstream sides of said second inlet means is equal to a gas pressure gradient between a patient airway and a downstream side of said second inlet means.

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