Surgery – Respiratory method or device – Respiratory gas supply means enters mouth or tracheotomy...
Patent
1987-01-30
1989-05-02
Coven, Edward M.
Surgery
Respiratory method or device
Respiratory gas supply means enters mouth or tracheotomy...
12820716, A61M 1600
Patent
active
048258628
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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patent: 4495948 (1985-01-01), Shapiro
patent: 4501273 (1985-02-01), McGinnis
patent: 4565194 (1986-01-01), Weerda et al.
Hasegawa Toshihisa
Sato Toru
Coven Edward M.
Lacyk John P.
Tottori University
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