Wearable ambulatory medical device with multiple sensing electrodes

摘要

An ambulatory medical device including a plurality of electrodes configured to be disposed at spaced apart positions about a patient's body, an electrode signal acquisition circuit, and a monitoring circuit. The acquisition circuit has a plurality of inputs each electrically coupled to a respective electrode of the plurality of electrodes and is configured to sense a respective signal provided by a plurality of different pairings of the plurality of electrodes. The monitoring circuit is electrically coupled to an output of the acquisition circuit and is configured to analyze the respective signal provided by each of the plurality of different pairings and to instruct the acquisition circuit to select at least one of the plurality of different pairings to monitor based on at least one of the quality of the respective signal, a phase difference between the respective signal and that of other pairings, a position of electrodes relative to the patient's body, and other criteria.

主权项

1. An ambulatory medical device, comprising:
a garment to be worn about a body of a patient; a plurality of electrodes configured to be attached to the garment and disposed at spaced apart positions about the body of the patient; an electrode signal acquisition circuit having a plurality of inputs, each respective input of the plurality of inputs being electrically coupled to a respective electrode of the plurality of electrodes, the electrode signal acquisition circuit being configured to sense a respective signal provided by each of a plurality of different pairings of the plurality of electrodes; and a monitoring circuit, electrically coupled to an output of the electrode signal acquisition circuit, the monitoring circuit being configured to analyze the respective signal provided by each of the plurality of different pairings and to instruct the electrode signal acquisition circuit to select at least one of the plurality of different pairings to monitor based upon at least two of a quality of the respective signal provided by the selected at least one of the plurality of different pairings, a phase difference between the respective signal provided by the selected at least one of the plurality of different pairings and the respective signal provided by another selected at least one of the plurality of different pairings, a position of the respective electrodes of the selected at least one of the plurality of different pairings relative to the body of the patient, and a plane defined by the respective electrodes of the selected at least one of the plurality of different pairings.