Therapy delivery architecture for implantable medical device
First Claim
1. An implantable medical device, comprising:
- a first power supply circuit;
a second power supply circuit;
an electrostimulation therapy control circuit, configured to provide a control signal specifying an electrostimulation therapy selected from a first electrostimulation therapy that uses the first power supply circuit and a second electrostimulation therapy that uses the second power supply circuit;
an electrostimulation therapy output circuit coupled to the electrostimulation therapy control circuit and the first and second power supply circuits, the electrostimulation therapy output circuit configured to respond the control signal by controllably connecting the first power supply circuit to one or more electrostimulation output nodes to deliver the first electrostimulation therapy or controllably connecting the second power supply circuit to one or more of the electrostimulation output nodes to deliver the second electrostimulation therapy; and
an electrostimulation therapy return circuit coupled to the electrostimulation therapy control circuit and configured to provide or maintain a charge-balance condition for the electrostimulation therapies, the electrostimulation therapy return circuit configured to respond to the control signal by establishing a first return path when the first electrostimulation therapy is selected and a second return path when the second electrostimulation therapy is selected, the first return path having a capacitance between at least one of the electrostimulation output nodes and a reference node to passively bleed charges to provide or maintain the charge-balanced condition during the first electrostimulation therapy, the second return path having a capacitance between at least one of the electrostimulation output nodes and the reference node to passively bleed charges to provide or maintain the charge-balanced condition during the second electrostimulation therapy;
wherein each of the electrostimulation output nodes is configured to couple to one or more implantable electrodes.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable medical device (IMD) may include multiple power supply circuits and an electrostimulation therapy output circuit configured to, in response to a control signal specifying an electrostimulation therapy, controllably connect any one or more of the first or second power supply circuits to any one or more of a first electrostimulation output node or a second electrostimulation output node to deliver an electrostimulation. In an embodiment, the IMD may include an electrostimulation therapy return circuit configured to establish a return path for the electrostimulation delivered via one or more of the first electrostimulation output node or the second electrostimulation output node.
43 Citations
20 Claims
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1. An implantable medical device, comprising:
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a first power supply circuit; a second power supply circuit; an electrostimulation therapy control circuit, configured to provide a control signal specifying an electrostimulation therapy selected from a first electrostimulation therapy that uses the first power supply circuit and a second electrostimulation therapy that uses the second power supply circuit; an electrostimulation therapy output circuit coupled to the electrostimulation therapy control circuit and the first and second power supply circuits, the electrostimulation therapy output circuit configured to respond the control signal by controllably connecting the first power supply circuit to one or more electrostimulation output nodes to deliver the first electrostimulation therapy or controllably connecting the second power supply circuit to one or more of the electrostimulation output nodes to deliver the second electrostimulation therapy; and an electrostimulation therapy return circuit coupled to the electrostimulation therapy control circuit and configured to provide or maintain a charge-balance condition for the electrostimulation therapies, the electrostimulation therapy return circuit configured to respond to the control signal by establishing a first return path when the first electrostimulation therapy is selected and a second return path when the second electrostimulation therapy is selected, the first return path having a capacitance between at least one of the electrostimulation output nodes and a reference node to passively bleed charges to provide or maintain the charge-balanced condition during the first electrostimulation therapy, the second return path having a capacitance between at least one of the electrostimulation output nodes and the reference node to passively bleed charges to provide or maintain the charge-balanced condition during the second electrostimulation therapy; wherein each of the electrostimulation output nodes is configured to couple to one or more implantable electrodes. - 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 plurality of power supply circuits; a plurality of electrostimulation output nodes; an electrostimulation therapy control circuit, configured to provide a control signal specifying an electrostimulation therapy; an electrostimulation therapy output circuit coupled to the electrostimulation therapy control circuit and configured to respond to the control signal by controllably connecting one or more of the plurality of power supply circuits to any specified one or more of the plurality of electrostimulation output nodes to deliver an electrostimulation therapy; an electrostimulation therapy return circuit coupled to the electrostimulation therapy control circuit and configured to provide or maintain a charge-balance condition for the electrostimulation therapies, the electrostimulation therapy return circuit configured to respond to the control signal by establishing a return path having a capacitance between at least one of the plurality of electrostimulation output nodes and a reference node to passively bleed charges to provide or maintain the charge-balanced condition during the electrostimulation therapy; wherein each of the respective electrostimulation output nodes is configured to couple to respective implantable electrodes; wherein, under the control of the therapy control circuit, the electrostimulation therapy output circuit and the electrostimulation therapy return circuits are configured to generate two or more at least partially contemporaneous electrostimulation therapies for respective delivery at two different specified tissue sites using any specified combination of the plurality of electrostimulation output nodes; and wherein the specified electrostimulation therapy includes a specified neural stimulation therapy.
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15. An implantable medical device comprising:
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at least one processor; and at least one memory circuit; wherein the at least one memory circuit includes instructions that, when performed by the at least one processor, cause the implantable medical device to; controllably connect a first power supply circuit to one or more electrostimulation output nodes to deliver a first electrostimulation therapy or controllably connect a second power supply circuit to one or more of the electrostimulation output nodes to deliver a second electrostimulation therapy in response to a control signal specifying an electrostimulation therapy and using an electrostimulation therapy output circuit coupled to an electrostimulation therapy control circuit and the first and second power supply circuits; and provide or maintain a charge-balance condition for the electrostimulation therapies by establishing a first return path when the first electrostimulation therapy is selected and a second return path when the second electrostimulation therapy is selected, the first return path having a capacitance between at least one of the electrostimulation output nodes and a reference node to passively bleed charges to provide or maintain the charge-balanced condition during the first electrostimulation therapy using an electrostimulation therapy return circuit coupled to the electrostimulation therapy control circuit, the second return path having a capacitance between at least one of the electrostimulation output nodes and the reference node to passively bleed charges to provide or maintain the charge-balanced condition during the second electrostimulation therapy using the electrostimulation therapy return circuit coupled to the electrostimulation therapy control circuit; wherein each of the electrostimulation output nodes is configured to couple to one or more implantable electrodes. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification