Negative inspiratory force manometer apparatus
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United States of America Patent
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-
Feb 15, 2005
Grant Date -
Jul 29, 2004
app pub date -
Jan 28, 2003
filing date -
Jan 28, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The apparatus is connected by tubing to a patient. The apparatus has a manometer on one side in communication with an entrance port conveying ambient air to the patient. A spring loaded cap is depressed to block air inspired by the patient and cause such air to move a diaphragm in the manometer so that the inspired negative air pressure of the patient can be recorded. As soon as the cap is released a spring opens the entrance port to continue normal flow of ambient air to the patient.
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