Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1990-06-18
1991-12-03
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
Specific condition
128722, 128724, 324663, G08B 2100
Patent
active
050703218
ABSTRACT:
The present invention pertains to an apparatus for maintaining and monitoring a breathing passage in the trachea of a patient. The apparatus is comprised of a tracheotomy tube for fitting into the trachea. The apparatus is also comprised of means for warning when the tracheotomy tube become obstructed to air flow. In a preferred embodiment, the warning means includes a sensor in contact with the tracheotomy tube for sensing when the tracheotomy tube becomes obstructed. In a more preferred embodiment, the sensor includes at least one temperature sensor disposed such that the temperature of the air in the tracheotomy tube is sensed and produces the temperature sensor signal corresponding to the air temperature in the tracheotomy tube. The temperature sensor is in electrical connection with an alarm which indicates when the tube is obstructed. In another embodiment, the sensor includes a capacitor disposed in the tracheotomy tube such that the capacitance of the capacitor corresponds to the percent occlusion of the tube when obstructed.
REFERENCES:
patent: 3635082 (1972-01-01), Prellwitz et al.
patent: 3903876 (1975-09-01), Harris
patent: 4014206 (1977-03-01), Taylor
patent: 4182344 (1980-04-01), Benson
"The Breath of Life . . . New Old . . . Radio Transmitter for Helmet Puts the X on Brain", Popular Mechanics, Jan. '71.
Einhorn Robert K.
Szoke Istvan
Crosland Donnie L.
Einhorn Robert K.
Hofsass Jeffery A.
Schwartz Ansel M.
Schwartz Ansel M.
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