Systems and methods for making and using electrical stimulation systems with improved RF compatibility
First Claim
1. An implantable control module for an electrical stimulation system, the control module comprising:
- a sealed casing defining an outer surface and an inner space, the outer surface of the casing comprising at least one electrically-conductive portion;
an electronic subassembly disposed in the inner space of the casing, the electronic subassembly comprising a pulse generator;
a sealed feedthrough housing disposed along a portion of the casing, the feedthrough housing having an outer surface comprising at least one electrically-conductive portion, wherein the at least one electrically-conductive portion of the feedthrough housing is electrically coupled to the at least one electrically-conductive portion of the casing;
a plurality of feedthrough pins each having a first end and an opposing second end, the plurality of feedthrough pins extending through the feedthrough housing with the first ends of each of the plurality of feedthrough disposed external to the casing and the second end of each of the plurality of feedthrough pins extending into the casing;
a plurality of conductive pathways disposed in the casing, each of the plurality of conductive pathways electrically coupling a different one of the plurality of feedthrough pins to the electronic subassembly;
a non-conductive substrate disposed in the casing, wherein at least a portion of each of the plurality of conductive pathways extends along at least a portion of the non-conductive substrate; and
an RF-diverting assembly disposed in the casing, the RF-diverting assembly comprisinga feedthrough ground removably attached to the non-conductive substrate and electrically coupled to the at least one electrically-conductive portion of the feedthrough housing,a plurality of conductive pads removably attached to the non-conductive substrate, wherein each of the conductive pads is electrically coupled to a different one of the plurality of conductive pathways extending along the non-conductive substrate and comprises an aperture for receiving a portion of one of the feedthrough pins, anda plurality of capacitive elements each coupling a different one of the plurality of conductive pads to the feedthrough ground.
1 Assignment
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Accused Products
Abstract
An implantable control module for an electrical stimulation system includes an electronic subassembly disposed in a casing. A sealed feedthrough housing is disposed along a portion of the casing. An electrically-conductive portion of the feedthrough housing is electrically coupled to an electrically-conductive portion of the casing. Feedthrough pins extend through the feedthrough housing and couple to the electronic subassembly via conductive pathways disposed in the casing. At least a portion of the conductive pathways extend along a non-conductive substrate. An RF-diverting assembly is disposed in the casing. The RF-diverting assembly includes a feedthrough ground electrically coupled to the electrically-conductive portion of the feedthrough housing. The RF-diverting assembly also includes a plurality of capacitive elements each coupling a different one of the plurality of conductive pathways to the feedthrough ground.
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Citations
20 Claims
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1. An implantable control module for an electrical stimulation system, the control module comprising:
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a sealed casing defining an outer surface and an inner space, the outer surface of the casing comprising at least one electrically-conductive portion; an electronic subassembly disposed in the inner space of the casing, the electronic subassembly comprising a pulse generator; a sealed feedthrough housing disposed along a portion of the casing, the feedthrough housing having an outer surface comprising at least one electrically-conductive portion, wherein the at least one electrically-conductive portion of the feedthrough housing is electrically coupled to the at least one electrically-conductive portion of the casing; a plurality of feedthrough pins each having a first end and an opposing second end, the plurality of feedthrough pins extending through the feedthrough housing with the first ends of each of the plurality of feedthrough disposed external to the casing and the second end of each of the plurality of feedthrough pins extending into the casing; a plurality of conductive pathways disposed in the casing, each of the plurality of conductive pathways electrically coupling a different one of the plurality of feedthrough pins to the electronic subassembly; a non-conductive substrate disposed in the casing, wherein at least a portion of each of the plurality of conductive pathways extends along at least a portion of the non-conductive substrate; and an RF-diverting assembly disposed in the casing, the RF-diverting assembly comprising a feedthrough ground removably attached to the non-conductive substrate and electrically coupled to the at least one electrically-conductive portion of the feedthrough housing, a plurality of conductive pads removably attached to the non-conductive substrate, wherein each of the conductive pads is electrically coupled to a different one of the plurality of conductive pathways extending along the non-conductive substrate and comprises an aperture for receiving a portion of one of the feedthrough pins, and a plurality of capacitive elements each coupling a different one of the plurality of conductive pads to the feedthrough ground. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An implantable control module for an electrical stimulation system, the control module comprising:
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a sealed casing defining as outer surface and an inner space, the outer surface of the casing comprising at least one electrically-conductive portion; an electronic subassembly disposed in the inner space of the casing, the electronic subassembly comprising a pulse generator; a sealed feedthrough housing disposed along a portion of the casing, the feedthrough housing having an outer surface comprising at least one electrically-conductive portion, wherein the at least one electrically-conductive portion of the feedthrough housing is electrically coupled to the at least one electrically-conductive portion of the casing; a plurality of feedthrough pins each having a first end and an opposing second end, the plurality of feedthrough pins extending through the feedthrough housing with the first ends of each of the plurality of feedthrough disposed external to the casing and the second end of each of the plurality of feedthrough pins extending into the casing; a plurality of conductive pathways disposed in the casing, each of the plurality of conductive pathways electrically coupling a different one of the plurality of feedthrough pins to the electronic subassembly; a non-conductive substrate disposed in the casing, the non-conductive substrate having a first major surface and an opposing second major surface, wherein at least a portion of each of the plurality of conductive pathways extends along the first major surface of the non-conductive substrate; and an RF-diverting assembly disposed in the casing, the RF-diverting assembly comprising a plurality of capacitive elements disposed on the first major surface of the non-conductive substrate, wherein each of the capacitive elements is electrically coupled to a different one of the plurality of conductive pathways along the first major surface of the non-conductive substrate, and a feedthrough ground disposed on the second major surface of the non-conductive substrate and electrically coupled to the at least one electrically-conductive portion of the feedthrough housing, wherein the feedthrough ground is also electrically coupled to each of the plurality of capacitive elements. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification