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US 8,397,727 B2Granted
Mask vent
AssigneeResMed Limited
InventorsEva Ng, Robert Henry Frater, Lee James Veliss, Barton John Kenyon, Daniel Robert Judson, Robert Edward Henry, Alison Oldenburg, Renee Frances Doherty, Michael John Reid
Life of this patent
Estimating the term…
Abstract
A vent arrangement is provided to a mask or associated conduit to discharge exhaled gas from the mask to atmosphere. The vent arrangement is structured to diffuse the exhaust vent flow to produce less air jetting, thereby increasing the comfort of the patient and their bed partner. For example, the vent arrangement may include one or more grill components and/or media constructed and arranged to diffuse vent flow.
Claims19
A vent arrangement for a mask, comprising:
- a mask component;
- and
- a vent cap provided to the mask component, the vent cap including a base wall and a dome or raised portion that extends upwardly from the base wall, the dome or raised portion including an annular side wall with multiple vent holes arranged radially along the annular side wall to radially divide exhaust flow, the vent holes being open in use at least during the inhalation and exhalation phases of the user's breathing cycle.
Dependencies are inferred from the claim text.