Isolation of sensing and stimulation circuitry
First Claim
1. An implantable medical device (IMD) comprising:
- a first module configured to deliver electrical stimulation therapy to a patient;
a second module configured to deliver electrical stimulation therapy to the patient or senses a physiological condition of the patient via at least one electrode, wherein the first module and second module share at least one common component; and
at least one isolation circuit that couples the second module to the at least one electrode and is configured to reduce at least one of common-mode interference and shunt current on the second module caused by the delivery of electrical stimulation by the first module, wherein the at least one isolation circuit is configured to isolate the electrical stimulation delivered by the first module from the second module.
2 Assignments
0 Petitions
Accused Products
Abstract
The disclosure describes techniques of reducing or eliminating a commonality between two modules within the same implantable medical device. Each module within the implantable medical device provides therapy to a patient. The commonality between the two modules exists due to at least one common component shared by the two modules. The commonality between the two modules may create common-mode interference and a shunt current. In accordance with this disclosure, various isolation circuits located at various locations are disclosed to reduce or eliminate the commonality between the two modules. The reduction or elimination of the commonality between the two modules may reduce or eliminate common-mode interference and the shunt current.
113 Citations
28 Claims
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1. An implantable medical device (IMD) comprising:
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a first module configured to deliver electrical stimulation therapy to a patient; a second module configured to deliver electrical stimulation therapy to the patient or senses a physiological condition of the patient via at least one electrode, wherein the first module and second module share at least one common component; and at least one isolation circuit that couples the second module to the at least one electrode and is configured to reduce at least one of common-mode interference and shunt current on the second module caused by the delivery of electrical stimulation by the first module, wherein the at least one isolation circuit is configured to isolate the electrical stimulation delivered by the first module from the second module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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delivering, via a first module within an implantable medical device (IMD), electrical stimulation therapy to a patient; delivering, via a second module within an IMD, electrical stimulation therapy to the patient or sensing a physiological condition of the patient, wherein the first module and second module share at least one common component, and wherein the second module is configured to deliver electrical stimulation therapy to the patient or sense the physiological condition of the patient via at least one electrode; and isolating the electrical stimulation delivered by the first module from the second module via at least one isolation circuit, wherein the isolation circuit couples the second module to the at least one electrode and is configured to reduce at least one of common-mode interference and shunt current on the second module caused by the delivery of electrical stimulation by the first module. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. An implantable medical device (IMD) comprising:
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a first means for delivering electrical stimulation therapy to a patient; a second means for delivering electrical stimulation therapy to the patient or sensing a physiological condition of the patient via at least one electrode, wherein the first means and second means share at least one common component; and means for isolating the electrical stimulation delivered by the first means from the second means, wherein the means for isolating couples the second means to the at least one electrode and is configured to reduce at least one of common-mode interference and shunt current on the second means caused by the delivery of electrical stimulation by the first means. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification