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Nasal interface and system including ventilation insert

  • US 6,997,187 B2
  • Filed: 09/10/2003
  • Issued: 02/14/2006
  • Est. Priority Date: 09/10/2003
  • Status: Expired due to Term
First Claim
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1. A ventilation interface, comprising:

  • a cannula with at least one nasal insert and at least one exhaust port;

    the cannula forming a first portion of an input gas flow passage to supply the ventilation gas to the user, the first portion of the input gas flow passage defined by a first passage disposed at a first distal end of the cannula where the cannula is connected to a first source of ventilation gas and a second passage disposed at a second distal end of the cannula where the cannula is connected to a second source of ventilation gas;

    the at least one nasal insert forming second and third portions of the input gas flow passage from the cannula to a distal end of the nasal insert that are substantially axially aligned with the first passage disposed at the first distal end of the cannula where the cannula is connected to a first source of ventilation gas and the second passage disposed at the second distal end of the cannula where the cannula is connected to the second source of ventilation gas; and

    a seal portion adapted to engage at least a portion of the nares, the seal portion being provided on the distal end of the at least one nasal insert.

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