A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
326/13.6
A61B 5/08 (2006.01)
Patent
CA 1174283
ROGERS, BERESKIN & PARR C A N A D A Title: RESPIRATION MONITOR Inventor: GEORGE A. VOLGYESI ABSTRACT OF THE DISCLOSURE The disclosure relates to a respiration monitor primarily intended to be used in hospitals to provide an alarm signal in the event of cessation of breathing by a patient. The monitor includes a sensor having a housing which defines an air passageway and which is adapted to be placed in communication with the airway of a patient so that air inhaled and exhaled by the patient will flow through said passageway. A pair of electrical conductors are located in the passageway in the path of air flowing therethrough in use. The conductors are spaced from one another and form a capacitor having a dielectric formed by the air between said conductors, so that changes in the humidity of the air in said passageway during inhalation and exhalation by the patient in use will cause corres- ponding cyclic variations in the capacitance of said capacitor. The monitor also includes electrical circuit means coupled to the conductors and adapted to provide an alarm signal in the event of cessation of said cyclic variations in capacitance.
368159
Bereskin & Parr
Hospital For Sick Children (the)
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