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Connector for a respiratory mask and a respiratory mask

  • US 6,691,707 B1
  • Filed: 06/16/2000
  • Issued: 02/17/2004
  • Est. Priority Date: 06/18/1999
  • Status: Expired due to Term
First Claim
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1. A connector comprising:

  • a mask end having a longitudinal axis for connecting in fluid communication with an interior of a respiratory mask;

    a supply conduit end having a longitudinal axis and being disposed at an angle to the mask end for connecting in fluid communication with an outlet of a breathable gas supply conduit;

    a gas washout vent passage having an inlet adjacent to, or forming part of, the mask end in fluid communication with the interior of the respiratory mask and an outlet in fluid communication with the atmosphere, the outlet including an interior surface that forms a smooth prolongation with an adjacent exterior surface of the connector, the outlet is disposed on a side of the connector remote from the mask end, is generally semi-circular when viewed in cross-section and is adapted to direct washout gas in a direction substantially perpendicular to the longitudinal axis of the mask end and substantially parallel to the longitudinal axis of the supply conduit end towards the supply conduit;

    a body portion including an interior surface and an exterior surface; and

    a cap portion including an interior surface spaced apart from the interior surface of the body portion, said interior surface of the body portion and said interior surface of the cap portion defining said vent passage therebetween, wherein the inlet of the vent passage comprises part of the mask end and is in direct fluid communication with the interior of the respiratory mask.

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