APPARATUS AND METHOD FOR SIMULTANEOUS CAPTURE OF BIOPOTENTIAL AND TISSUE IMPEDANCE SIGNALS

摘要

A medical device and associated method acquire a biopotential signal from a pair of electrodes at a first sampling rate and a bioimpedance signal from the pair of electrodes at a second sampling rate. An onset and/or offset of the drive signal delivered to the pair of electrodes for acquiring the bioimpedance signal is synchronized to the first sampling rate.

主权项

1. An implantable medical device, comprising:
a pair of electrodes; a biopotential sensing module coupled to the pair of electrodes and configured to acquire a biopotential signal present at the pair of electrodes at a first sampling rate; an impedance monitoring module coupled to the pair of electrodes and configured to acquire a bioimpedance signal across the pair of electrodes at a second sampling rate; a control module configured to control the impedance monitoring module to deliver a drive signal that is synchronized to the first sampling rate to the pair of electrodes for acquiring the bioimpedance signal.