Patent ID: 9173594
Filing Date: 2015-11-03
Classification: A61B

Abstract:
1. A method for measuring respiratory rate from a patient, comprising the following steps: (a) measuring a time-dependent impedance pneumography signal from the patient with an impedance pneumography sensor connected to at least two electrodes positioned noninvasively on the patient's torso, the impedance pneumography signal representing a time-dependent capacitance change in the patient's torso; (b) measuring at least one time-dependent motion signal with a motion sensor positioned noninvasively on the patient's torso, the at least one motion signal corresponding to motion of a portion of the patient's body to which the motion sensor is attached; (c) transmitting the impedance pneumography signal and the at least one motion signal to a processing system comprising a microprocessor and processing the impedance pneumography signal and the at least one motion signal using the processing system to determine the patient's respiratory rate, the processing steps comprising: