Electromagnetic field responder for respiration monitoring Patent #: 4279257
ApplicationNo. 06/275343 filed on 06/19/1981
ExaminersPrimary: Howell, Kyle L.
Assistant: Hanley, John C.
International ClassesA61B 5/11 (20060101)
A61B 5/113 (20060101)
G06F 19/00 (20060101)
A61M 16/00 (20060101)
AbstractA method for detecting apnea by sampling a voltage waveform representative of respiration at regular intervals and calculating the instantaneous voltage differences at alternate sample points, and comparing the magnitude of each difference voltage so calculated against a "threshold" value determined to be the minimum value consistent with normal respiration activity.