Therapy module crosstalk mitigation
First Claim
1. A method comprising:
- generating an electrical stimulation signal that has a predetermined signature with a first therapy module that delivers electrical stimulation therapy to a patient, wherein the predetermined signature is characterized by at least one of a varying duty cycle or a signal envelope of the electrical stimulation signal;
delivering the electrical stimulation signal to tissue of the patient via a first set of electrodes connected to the first therapy module;
sensing electrical activity within the patient with a second set of electrodes electrically connected to a second therapy module, wherein the electrical activity includes a physiological signal of the patient and a signal artifact from the delivery of the electrical stimulation signal by the first therapy module;
generating a sensed electrical signal based on the sensed electrical activity; and
processing the sensed electrical signal to remove at least part of the signal artifact based on the predetermined signature.
1 Assignment
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Accused Products
Abstract
A first implantable medical device (IMD) implanted within a patient may communicate with a second IMD implanted within the patient by encoding information in an electrical stimulation signal. The delivery of the electrical stimulation signal may provide therapeutic benefits to the patient. The second IMD may sense the electrical stimulation signal, which may be presented as an artifact in a sensed cardiac signal, and process the sensed signal to retrieve the encoded information. The second IMD may modify its operation based on the received therapy information. Crosstalk between the first and second IMDs may be reduced using various techniques described herein. For example, the first IMD may generate the electrical stimulation signal to include a spread spectrum energy distribution or a predetermined signal signature. The second IMD may effectively remove a least some of the signal artifact in a sensed cardiac signal based on the predetermined signal signature.
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Citations
24 Claims
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1. A method comprising:
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generating an electrical stimulation signal that has a predetermined signature with a first therapy module that delivers electrical stimulation therapy to a patient, wherein the predetermined signature is characterized by at least one of a varying duty cycle or a signal envelope of the electrical stimulation signal; delivering the electrical stimulation signal to tissue of the patient via a first set of electrodes connected to the first therapy module; sensing electrical activity within the patient with a second set of electrodes electrically connected to a second therapy module, wherein the electrical activity includes a physiological signal of the patient and a signal artifact from the delivery of the electrical stimulation signal by the first therapy module; generating a sensed electrical signal based on the sensed electrical activity; and processing the sensed electrical signal to remove at least part of the signal artifact based on the predetermined signature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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sensing electrical activity within a patient with a second therapy module, wherein the electrical activity includes a physiological signal of the patient and a signal artifact from a delivery of an electrical stimulation signal to the patient by an implantable medical device, the electrical stimulation signal comprising a predetermined signature that is characterized by at least one of a varying duty cycle or a signal envelope of the electrical stimulation signal; generating a sensed electrical signal based on the sensed electrical activity; and processing the sensed electrical signal to remove at least part of the signal artifact based on the predetermined signature of the electrical stimulation signal. - View Dependent Claims (12, 13)
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14. A system comprising:
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a first set of electrodes; a second set of electrodes; a first therapy module that generates and delivers an electrical stimulation signal having a predetermined signature to tissue of a patient via the first set of electrodes, wherein the predetermined signature is characterized by at least one of a varying duty cycle or a signal envelope of the electrical stimulation signal; a second therapy module that senses electrical activity within the patient via the second set of electrodes, wherein the electrical activity includes a physiological signal and a signal artifact from the delivery of the electrical stimulation signal by the first therapy module, wherein the second therapy module generates a sensed electrical signal based on the electrical activity; and a processor that processes the sensed electrical signal to remove at least part of the signal artifact based on the predetermined signature. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A system comprising:
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means for generating an electrical stimulation signal that has a predetermined signature, wherein the predetermined signature is characterized by at least one of a varying duty cycle or a signal envelope of the electrical stimulation signal; means for delivering the electrical stimulation signal to tissue of the patient via a first set of electrodes electrically connected to the first therapy module; means for sensing electrical activity within the patient with a second set of electrodes electrically connected to a second therapy module, wherein the electrical activity includes a physiological signal of the patient and a signal artifact from the delivery of the electrical stimulation signal by the first therapy module; means for generating a sensed electrical signal based on the sensed electrical activity; and means for processing the sensed electrical signal to remove at least part of the signal artifact based on the predetermined signature. - View Dependent Claims (24)
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Specification