Implantable medical device having shielded and filtered feedthrough assembly and methods for making such assembly
First Claim
1. In an implantable medical device having a hermetically sealed housing, said housing including a wall and enclosing electronic circuits for producing electrical stimulating pulses, an improved system for electrically connecting the electronic circuits with an implantable lead, the improved system comprising:
- a plurality of connector blocks for making electrical contact with the implantable lead;
a hollow weld ring mounted in the wall of the hermetically sealed housing;
a multilayered structure disposed within and extending from opposite sides of the hollow weld ring so as to have a first portion outside the hermetically sealed housing and an opposite second portion within the hermetically sealed housing, the multilayered structure including a laminate of insulating layers with printed conductors therebetween, the printed conductors extending between the first and second portions and terminating in a first plurality of connector pads at the first portion for connection to respective ones of the plurality of connector blocks and in a second plurality of connector pads at the second portion for connection to the electronic circuits;
conductive means for electrically connecting the plurality of connector blocks with respective ones of the first plurality of connector pads at the first portion of the multilayered structure; and
a connector assembly attached to the hermetically sealed housing enclosing the plurality of connector blocks, the first portion of the multilayer structure and the conductive means therein, the connector assembly further having at least one receptacle for receiving the implantable lead therein.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless feedthrough assembly, for coupling leads received in the receptacles of a connector assembly to the electronic circuit within a cardiac pacemaker, includes a weld ring mounted in hermetically sealed fashion within a housing wall of the pacemaker and itself hermetically sealed to an intermediate portion of an elongated, multilayered structure. The multilayered structure includes layers of electrically insulating ceramic material on opposite sides of a planar array of printed conductors extending between a first portion of the structure within the connector assembly and an opposite second portion of the structure within the pacemaker. Connector pads at the ends of the printed conductors within the first portion are coupled to the receptacles of the connector assembly, while contact pads at the exterior of the second portion and coupled by vias to connector pads at the ends of the printed conductors are coupled to the electronic circuits within the pacemaker. Printed ground planes on the multilayered structure form a conductive envelope which shields the printed conductors from electric fields. The contact pads include positive and ground contacts to which are coupled discrete filtering capacitors for limiting the spectrum of frequencies receivable by the connector assembly. A method for making the aforedescribed feedthrough assembly is also disclosed.
205 Citations
19 Claims
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1. In an implantable medical device having a hermetically sealed housing, said housing including a wall and enclosing electronic circuits for producing electrical stimulating pulses, an improved system for electrically connecting the electronic circuits with an implantable lead, the improved system comprising:
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a plurality of connector blocks for making electrical contact with the implantable lead; a hollow weld ring mounted in the wall of the hermetically sealed housing; a multilayered structure disposed within and extending from opposite sides of the hollow weld ring so as to have a first portion outside the hermetically sealed housing and an opposite second portion within the hermetically sealed housing, the multilayered structure including a laminate of insulating layers with printed conductors therebetween, the printed conductors extending between the first and second portions and terminating in a first plurality of connector pads at the first portion for connection to respective ones of the plurality of connector blocks and in a second plurality of connector pads at the second portion for connection to the electronic circuits; conductive means for electrically connecting the plurality of connector blocks with respective ones of the first plurality of connector pads at the first portion of the multilayered structure; and a connector assembly attached to the hermetically sealed housing enclosing the plurality of connector blocks, the first portion of the multilayer structure and the conductive means therein, the connector assembly further having at least one receptacle for receiving the implantable lead therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In an implantable medical device having a hermetically sealed housing, said housing including a wall and enclosing electronic circuits for producing electrical stimulating pulses, an improved system for electrically connecting the electronic circuits with an implantable lead, the improved system comprising:
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at least one connector block for making electrical contact with the implantable lead; an elongated multilayered structure having a first portion for disposition outside the hermetically sealed housing, an opposite second portion for disposition inside the hermetically sealed housing and an intermediate portion between the first and second portions adapted to be disposed, in hermetically sealed fashion, within the wall of the hermetically sealed housing, the multilayered structure including a generally planar array of printed conductors disposed between opposite layers of electrically insulating material and extending between the first and second portions, at least one connector pad coupled to the generally planar array of printed conductors at the first portion for coupling to the at least one connector block, and at least one contact coupled to the generally planar array of printed conductors at the second portion for coupling to the electronic circuits of the implantable medical device; conductive means for electrically connecting the at least one connector block and the at least one connector pad at the first portion of the multilayered structure; and a connector assembly attached to the hermetically sealed housing enclosing the at least one connector block, the first portion of the multilayer structure and the conductive means therein. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification