BREATHING TUBE FILTER AND FILTER ASSEMBLY
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United States of America Patent
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Issued Date -
Jun 22, 2023
app pub date -
Dec 21, 2022
filing date -
Dec 22, 2021
priority date (Note) -
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Abstract
A pulmonary function test filter and filter assembly for use with a breathing tube of a spirometer. The filter assembly includes a first portion having an exhaust end configured to removably engage an exhaust end of a flow tube of a spirometer, preferably without an adapter, a second portion configured to cooperatively engage the first portion and including a mouthpiece, and filter media. The filter media is removably securable between the first and second portions.
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