Safe-mode operation of an implantable medical device
First Claim
1. An implantable medical device comprising:
- a lead circuit comprising;
a first node configured to be coupled to a first lead coupled to a first target tissue, anda second node configured to be coupled to a second lead coupled to a second target tissue; and
an impedance unit to;
determine at least one characteristic of coupled energy associated with the lead circuit, wherein the coupled energy is produced by a source external to the implantable medical device;
select a first impedance from a plurality of impedances other than an open circuit impedance, wherein the first impedance is selected based on the at least one characteristic of the coupled energy to reduce at least one of the coupled energy and a negative effect associated with a functionality of the implantable medical device induced by the coupled energy; and
provide the first impedance between the first node and the second node.
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Accused Products
Abstract
An implantable medical device (IMD) may include a lead circuit including a first node configured to be coupled to a first lead that may be coupled to a first target tissue and including a second node configured to be coupled to a second lead that may be coupled to a second target tissue. The IMD may include an impedance unit that may determine at least one characteristic of coupled energy associated with the lead circuit, where the coupled energy may be produced by a source external to the IMD. The impedance unit may provide an impedance between the first node and the second node, where the impedance is selected based at least in part on a characteristic of the coupled energy. The impedance is selected to reduce the coupled energy or a negative effect associated with functionality of the IMD induced by the coupled energy.
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Citations
20 Claims
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1. An implantable medical device comprising:
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a lead circuit comprising; a first node configured to be coupled to a first lead coupled to a first target tissue, and a second node configured to be coupled to a second lead coupled to a second target tissue; and an impedance unit to; determine at least one characteristic of coupled energy associated with the lead circuit, wherein the coupled energy is produced by a source external to the implantable medical device; select a first impedance from a plurality of impedances other than an open circuit impedance, wherein the first impedance is selected based on the at least one characteristic of the coupled energy to reduce at least one of the coupled energy and a negative effect associated with a functionality of the implantable medical device induced by the coupled energy; and provide the first impedance between the first node and the second node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable medical device comprising:
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a lead circuit comprising; a first node configured to be coupled to a first lead coupled to a first target tissue, and a second node configured to be coupled to a second lead coupled to a second target tissue; a detection unit to; detect coupled energy associated with the lead circuit, wherein the coupled energy is produced by a source external to the implantable medical device, and determine at least one characteristic of the coupled energy; an impedance array coupled between the first node and the second node, wherein the impedance array is configured to modify an impedance provided between the first node and the second node; and an impedance unit to; cause the impedance array to adjust the impedance provided between the first node and the second node to a first impedance selected from a plurality of impedances other than an open circuit impedance based at least in part on the at least one characteristic of the coupled energy, wherein the impedance is adjusted to the first impedance to reduce at least one of the coupled energy and a negative effect associated with a functionality of the implantable medical device induced by the coupled energy. - View Dependent Claims (15, 16, 17)
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18. An implantable medical device comprising:
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a lead circuit comprising; a first node configured to be coupled to a first lead coupled to a first target tissue, and a second node configured to be coupled to a second lead coupled to a second target tissue; a detection unit to; detect coupled energy associated with the lead circuit, wherein the coupled energy is produced by a source external to the implantable medical device, and determine at least one characteristic of the coupled energy; an impedance array coupled between the first node and the second node, wherein the impedance array is configured to modify an impedance provided between the first node and the second node; an impedance unit to; cause the impedance array to adjust the impedance provided between the first node and the second node to a first impedance selected from a plurality of impedances other than an open circuit impedance based at least in part on the at least one characteristic of the coupled energy, wherein the impedance is adjusted to the first impedance to reduce at least one of the coupled energy and a negative effect associated with a functionality of the implantable medical device induced by the coupled energy; and a stimulation unit to deliver stimulation signals to at least one of the first lead and the second lead to deliver a therapy to at least one of the first target tissue and the second target tissue. - View Dependent Claims (19, 20)
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Specification