Patient interface comprising a gas washout vent
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United States of America Patent
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Sep 8, 2020
Grant Date -
Jan 18, 2018
app pub date -
Jan 29, 2016
filing date -
Jan 30, 2015
priority date (Note) -
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Abstract
A gas washout vent for a patient interface may be configured to allow a flow of patient exhaled gas to an exterior of the patient interface to minimise rebreathing of exhaled gas by the patient and the vent may include: a plurality of vent passages extending between a first and a second side of the vent, each vent passage may include: a plurality of first openings extending from the first side towards the second side, said first openings being uniform in size and shape; a plurality of second openings extending from the second side towards the first side, said second openings being uniform in size and shape; and wherein the first openings and the second openings partially overlap each other at an interface to form constricted passages therebetween.
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