APPARATUS AND METHOD FOR PATIENT ACTIVITY ESTIMATION AND CLASSIFICATION

摘要

A medical device includes a housing and an electrode arrangement coupled to the housing and configured to sense an electrical physiologic signal from a patient. The device also includes detection circuitry coupled to the electrode arrangement and configured to obtain a cardiac signal component and a non-cardiac signal component from the physiological signal. A processor is coupled to the detection circuitry. The processor is configured to detect patient activity using at least the non-cardiac signal component and discriminate between voluntary and involuntary activity of the patient based on a comparison of temporally aligned cardiac and non-cardiac signal components.

主权项

1. A method comprising:
sensing, from a patient, an electrical physiologic signal between a single electrode pair; obtaining a cardiac signal component from the physiological signal; obtaining a non-cardiac signal component from the physiologic signal; comparing the cardiac and non-cardiac signal components to thresholds established for the patient; detecting patient activity using at least the non-cardiac signal component; and discriminating between voluntary and involuntary activity of the patient based on the comparison and temporal alignment of the cardiac signal component relative to the non-cardiac signal component.