Wearable ambulatory medical device with multiple sensing electrodes
First Claim
1. An ambulatory medical device, comprising:
- a plurality of electrodes configured to be disposed at spaced apart positions about a body of a 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 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 a quality of the respective signal provided by the selected at least one of the plurality of different pairings and 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.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
189 Citations
37 Claims
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1. An ambulatory medical device, comprising:
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a plurality of electrodes configured to be disposed at spaced apart positions about a body of a 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 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 a quality of the respective signal provided by the selected at least one of the plurality of different pairings and 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An ambulatory medical device, comprising:
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a plurality of electrodes configured to be disposed at spaced apart positions about a body of a 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 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 a quality of the respective signal provided by the selected at least one of the plurality of different pairings and a plane defined by the respective electrodes of the selected at least one of the plurality of different pairings.
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17. An ambulatory medical device, comprising:
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a plurality of electrodes configured to be disposed at spaced apart positions about a body of a 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 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 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 cardiac cycle of the heart of the patient.
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18. An ambulatory medical device, comprising:
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a plurality of electrodes configured to be disposed at spaced apart positions about a body of a 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 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 one 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, a plane defined by the respective electrodes of the selected at least one of the plurality of different pairings, and a cardiac cycle of a heart of the patient; wherein the electrode signal acquisition circuit includes a selection circuit having a plurality of inputs and a plurality of outputs, each respective input of the plurality of inputs of the selection circuit being electrically coupled to a respective one of the plurality of electrodes, and a plurality of differential amplifiers, each respective differential amplifier having a pair of inputs and an output, each respective input of the pair of inputs being electrically coupled to a respective one of the plurality of outputs of the selection circuit, each respective output of the plurality of differential amplifiers providing an output signal corresponding to a difference between the pair of inputs of the respective differential amplifier.
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19. An ambulatory medical device, comprising:
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a plurality of electrodes configured to be disposed at spaced apart positions about a body of a 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 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 one 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, a plane defined by the respective electrodes of the selected at least one of the plurality of different pairings, and a cardiac cycle of a heart of the patient; wherein the electrode signal acquisition circuit includes an analog multiplexor having a plurality of inputs and an output, each of the plurality of inputs being electrically coupled to a respective one of the plurality of electrodes, and an analog-to-digital converter having an input electrically coupled to the output of the analog multiplexer. - View Dependent Claims (20, 21)
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22. An ambulatory medical device, comprising:
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a plurality of electrodes configured to be disposed at spaced apart positions about a body of a 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 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 one 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, a plane defined by the respective electrodes of the selected at least one of the plurality of different pairings, and a cardiac cycle of a heart of the patient; wherein the electrode signal acquisition circuit includes a plurality of analog-to-digital converters, each respective analog-to-digital converter having a respective input that is electrically coupled to a respective one of the plurality of electrodes. - View Dependent Claims (23)
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24. A method of monitoring ECG signals, the method comprising acts of:
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selecting, from among a plurality of ECG sensors, a plurality of different pairings of ECG sensors; analyzing a respective ECG signal provided by each of the plurality of different pairings; identifying at least one of the plurality of different pairings to monitor based upon at least one of a quality of the respective ECG signal provided by the identified at least one of the plurality of different pairings, a phase difference between the respective ECG signal provided by the identified at least one of the plurality of different pairings and the respective ECG signal provided by another identified at least one of the plurality of different pairings, a position of respective ECG sensors of the identified at least one of the plurality of different pairings relative to a body of a patient, a plane defined by the respective ECG sensors of the identified at least one of the plurality of different pairings, and a cardiac cycle of a heart of the patient; and monitoring the identified at least one of the plurality of different pairings; wherein the act of identifying at least one of the plurality of different pairings to monitor is based upon the quality of the respective ECG signal provided by the identified at least one of the plurality of different pairings and the phase difference between the respective ECG signal provided by the identified at least one of the plurality of different pairings and the respective ECG signal provided by the other identified at least one of the plurality of different pairings. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of monitoring ECG signals, the method comprising acts of:
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selecting, from among a plurality of ECG sensors, a plurality of different pairings of ECG sensors; analyzing a respective ECG signal provided by each of the plurality of different pairings; identifying at least one of the plurality of different pairings to monitor based upon at least one of a quality of the respective ECG signal provided by the identified at least one of the plurality of different pairings, and a phase difference between the respective ECG signal provided by the identified at least one of the plurality of different pairings and the respective ECG signal provided by another identified at least one of the plurality of different pairings, a position of respective ECG sensors of the identified at least one of the plurality of different pairings relative to a body of a patient, a plane defined by the respective ECG sensors of the identified at least one of the plurality of different pairings, and a cardiac cycle of a heart of the patient; and monitoring the identified at least one of the plurality of different pairings; wherein the act of identifying at least one of the plurality of different pairings to monitor is based upon the quality of the respective ECG signal provided by the identified at least one of the plurality of different pairings and the plane defined by the respective ECG sensors of the identified at least one of the plurality of different pairings.
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37. A method of monitoring ECG signals, the method comprising acts of:
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selecting, from among a plurality of ECG sensors, a plurality of different pairings of ECG sensors; analyzing a respective ECG signal provided by each of the plurality of different pairings; identifying at least one of the plurality of different pairings to monitor based upon at least one of a quality of the respective ECG signal provided by the identified at least one of the plurality of different pairings, and a phase difference between the respective ECG signal provided by the identified at least one of the plurality of different pairings and the respective ECG signal provided by another identified at least one of the plurality of different pairings, a position of respective ECG sensors of the identified at least one of the plurality of different pairings relative to a body of a patient, a plane defined by the respective ECG sensors of the identified at least one of the plurality of different pairings, and a cardiac cycle of a heart of the patient; and monitoring the identified at least one of the plurality of different pairings; wherein the act of identifying at least one of the plurality of different pairings to monitor is based upon the position of respective ECG sensors of the identified at least one of the plurality of different pairings relative to the body of the patient and the cardiac cycle of the heart of the patient.
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Specification