Shunt-current reduction housing for an implantable therapy system
First Claim
1. A system comprising:
- a first implantable medical device (IMD) configured to deliver electrical stimulation to a first tissue site within a patient, wherein the first IMD comprises an outer housing that includes;
an electrically conductive layer comprising an internal surface and an external surface; and
an electrically insulative layer substantially fully covering at least one of the internal surface or the external surface of the electrically conductive layer, wherein the electrically insulative layer is configured to mitigate electrical shunt-current flowing through the outer housing of the first IMD; and
a second IMD configured to deliver electrical stimulation to a second tissue site within the patient.
1 Assignment
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Accused Products
Abstract
Techniques for minimizing interference between first and second medical devices of a therapy system may include providing an outer housing for at least one of the medical devices that comprises an electrically insulative layer formed over at least the electrically conductive portions (e.g., an electrically conductive layer) of the housing, or providing an electrically insulative pouch around an electrically conductive housing of at least the first medical device. The electrically insulative layer or electrically insulative pouch may reduce or even eliminate shunt-current that flows into the medical device via the housing. The shunt-current may be generated by the delivery of electrical stimulation by the second medical device. In some examples, the techniques may also include shunt-current mitigation circuitry that helps minimize or even eliminate shunt-current that feeds into the first medical device via one or more electrodes electrically connected to the first medical device.
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Citations
32 Claims
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1. A system comprising:
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a first implantable medical device (IMD) configured to deliver electrical stimulation to a first tissue site within a patient, wherein the first IMD comprises an outer housing that includes; an electrically conductive layer comprising an internal surface and an external surface; and an electrically insulative layer substantially fully covering at least one of the internal surface or the external surface of the electrically conductive layer, wherein the electrically insulative layer is configured to mitigate electrical shunt-current flowing through the outer housing of the first IMD; and a second IMD configured to deliver electrical stimulation to a second tissue site within the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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a first implantable medical device (IMD) configured to deliver electrical stimulation to a first tissue site within a patient, wherein the first IMD comprises an outer housing that includes an electrically conductive portion; an electrically insulative pouch physically separate from the first IMD and substantially fully encapsulating at least the electrically conductive portion of the outer housing, wherein the electrically insulative pouch is configured to reduce electrical shunt-current to the electrically conductive layer; and a second IMD configured to deliver electrical stimulation to a second tissue site within the patient. - View Dependent Claims (21, 22, 23)
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- 24. A method of reducing electrical shunt-current between a first implantable medical device (IMD) configured to deliver electrical stimulation to a first tissue site within a patient and a second IMD configured to deliver electrical stimulation to a second tissue site within the patient, wherein the first IMD and second IMD are implanted within the patient, the method comprising substantially fully covering at least one of an internal surface or an external surface of an electrically conductive layer of an outer housing of the first IMD with at least one of an electrically insulative layer or an electrically insulative pouch, wherein the at least one of the electrically insulative layer or the electrically insulative pouch is configured to mitigate electrical shunt-current flowing to the electrically conductive layer.
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28. A method comprising:
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implanting in a body of a patient a first implantable medical device (IMD) that delivers electrical stimulation to a first tissue site within the patient, wherein the first IMD comprises an outer housing that comprises an electrically conductive layer comprising an internal surface and an external surface and an electrically insulative layer substantially fully covering at least one of the internal surface or the external surface of the electrically conductive layer, wherein the electrically insulative layer is configured to reduce electrical shunt-current flowing through the outer housing of the first IMD; and implanting in the body of the patient a second IMD that delivers electrical stimulation to a second tissue site within the patient. - View Dependent Claims (29, 30)
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31. A system comprising:
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a first means for delivering electrical stimulation to a first tissue site within a patient, wherein the first means for delivering electrical stimulation comprises; an outer housing means for housing components of the first IMD, wherein the outer housing means for housing components of the first IMD comprises; a means for defining an internal surface and an external surface, wherein the means for defining is electrically conductive, and a means for electrically insulating the means for defining, wherein the means for electrically insulating substantially fully covers at least one of the internal surface or the external surface of the means for defining, and wherein the means for electrically insulating the means for defining is configured to mitigate electrical shunt-current flowing through the outer housing means of the first IMD; and a second means for delivering electrical stimulation to a second tissue site within the patient. - View Dependent Claims (32)
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Specification