Flow sensing arrangement for spirometer and method thereof
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United States of America Patent
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Oct 11, 2022
Grant Date -
Jul 9, 2020
app pub date -
Jul 26, 2018
filing date -
Jul 26, 2017
priority date (Note) -
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Abstract
A flow-sensing arrangement within a spirometer. The arrangement includes a tubular-member for allowing an air-passage along a longitudinal-axis thereof. At-least two disc-shaped air-resistive elements are removably-arranged within the tubular member to resist the air-flow. Each of the resistive-elements include perforations for allowing the air-passage through the resistive-element. At-least two ports extend radially outward through a wall of the tubular member, such that each of the two ports are located within the tubular-member near the resistive-elements to cause determination of at least a pressure-difference there-between.
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