Feedthrough assembly with glass layer and electrical stimulation systems containing the assembly
First Claim
1. A control module for an electrical stimulation system, comprising:
- a casing defining a sealed inner compartment;
an electronic subassembly disposed in the inner compartment of the casing;
a header portion coupled to the casing and comprising a connector configured and arranged to receive a proximal end of at least one lead or lead extension, the connector comprising a plurality of conductive contacts configured and arranged to electrically couple to terminal contacts on the at least one lead or lead extension;
a feedthrough assembly coupling the casing to the header portion and, in combination with the casing, sealing the inner compartment of the casing, the feedthrough assembly comprisinga non-conductive ceramic block coupled to the casing,a plurality of conductive feedthrough pins passing through the ceramic block, the feedthrough pins electrically coupling the conductive contacts of the connector to the electronic subassembly disposed in the inner compartment of the casing,a metal braze coupling the feedthrough pins to the ceramic block, anda glass layer disposed on at least a portion of the ceramic block and in contact with at least one of the feedthrough pins.
1 Assignment
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Accused Products
Abstract
A control module for an electrical stimulation system includes a casing defining a sealed inner compartment; an electronic subassembly disposed in the inner compartment; and a header portion coupled to the casing and having a connector to receive a proximal end of a lead or lead extension. The connector includes conductive contacts to electrically couple to terminal contacts on the lead or lead extension. The control module also includes a feedthrough assembly coupling the casing to the header portion. The feedthrough assembly includes a non-conductive ceramic block coupled to the casing, conductive feedthrough pins passing through the ceramic block and electrically coupling the conductive contacts of the connector to the electronic subassembly, a metal braze coupling the feedthrough pins to the ceramic block, and at least one glass layer disposed on at least a portion of the ceramic block and in contact with at least one of the feedthrough pins.
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Citations
20 Claims
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1. A control module for an electrical stimulation system, comprising:
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a casing defining a sealed inner compartment; an electronic subassembly disposed in the inner compartment of the casing; a header portion coupled to the casing and comprising a connector configured and arranged to receive a proximal end of at least one lead or lead extension, the connector comprising a plurality of conductive contacts configured and arranged to electrically couple to terminal contacts on the at least one lead or lead extension; a feedthrough assembly coupling the casing to the header portion and, in combination with the casing, sealing the inner compartment of the casing, the feedthrough assembly comprising a non-conductive ceramic block coupled to the casing, a plurality of conductive feedthrough pins passing through the ceramic block, the feedthrough pins electrically coupling the conductive contacts of the connector to the electronic subassembly disposed in the inner compartment of the casing, a metal braze coupling the feedthrough pins to the ceramic block, and a glass layer disposed on at least a portion of the ceramic block and in contact with at least one of the feedthrough pins. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A control module for an electrical stimulation system, comprising:
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a casing defining a sealed inner compartment and comprising a metal portion; an electronic subassembly disposed in the inner compartment of the casing; a header portion coupled to the casing and comprising a connector configured and arranged to receive a proximal end of at least one lead or lead extension, the connector comprising a plurality of conductive contacts configured and arranged to electrically couple to terminal contacts on the at least one lead or lead extension; a feedthrough assembly between the casing and the header portion and, in combination with the casing, sealing the inner compartment of the casing, the feedthrough assembly comprising a non-conductive ceramic block coupled to the metal portion of the casing, a plurality of conductive feedthrough pins passing through the ceramic block, the feedthrough pins electrically coupling the conductive contacts of the connector to the electronic subassembly disposed in the inner compartment of the casing, a metal braze coupling the feedthrough pins to the ceramic block, and a glass layer disposed on at least a portion of the ceramic block and in contact with each of the feedthrough pins to form a hermetic seal around the feedthrough pins. - View Dependent Claims (12, 13, 14)
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15. A method of forming a feedthrough assembly for a control module of an implantable electrical stimulation system, the method comprising:
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disposing a plurality of feedthrough pins through openings in a ceramic block; attaching the feedthrough pins to the ceramic block using a metal braze; and after attaching the feedthrough pins, forming a glass layer on at least a portion of the ceramic block and in contact with each of the feedthrough pins. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification