Pressure regulator for cuff of endotracheal tube with superposition of ventilating pressure variation
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United States of America Patent
Stats
-
May 2, 1989
Grant Date -
N/A
app pub date -
Jan 30, 1987
filing date -
Feb 14, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cuff pressure regulator for controlling the pressure in an annular, collapsible and inflatable bag-like cuff of a cuffed endotracheal tube inserted in a patient's trachea, while allowing superposition of the patient's ventilatory pressure variation on the cuff pressure. The regulator has a second chamber communicating with the inside of the cuff and a third chamber communicating with the inside of the tube inserted in the patient's trachea. A diaphragm portion of the partition between the second chamber and the third chamber is connected to a cuff pressure setter, so that the pressure in the second chamber is set at a desired level by the setter and controlled in response to the pressure variation in the third chamber.
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