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Ventilation interface

  • US 8,261,745 B2
  • Filed: 12/12/2005
  • Issued: 09/11/2012
  • Est. Priority Date: 12/10/2004
  • Status: Expired due to Fees
First Claim
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1. A respiration assist mask, comprising:

  • a ventilation interface including a gas entry port defined in the ventilation interface;

    a positive gas pressure source tube coupled to the gas entry port of the ventilation interface to facilitate supplying a gas to the ventilation interface;

    a cushioned facial interface connected to said ventilation interface, the facial interface having a gas exit shaped to gas-tightly seal only the mouth from the environment, the cushioned facial interface comprising at least one first exterior membrane that facilitates providing a seal across an upper lip and around a mouth of a user, and at least one second interior membrane positioned adjacent the at least one first exterior membrane such that a distance is defined therebetween, wherein the entire portion of the at least one first exterior membrane that facilitates providing a seal across an upper lip of a user has a first edge that extends toward the gas exit shaped to gas-tightly seal only the mouth that does not extend further than an adjacent second edge of the at least one second interior membrane;

    at least one removable nasal insert removably coupled in flow communication to an orifice in an upper portion of the cushioned facial interface; and

    a cavity defined within the cushioned facial interface between the gas entry port and an end of the at least one removable nasal insert farthest from the cushioned facial interface.

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