Discrete cofired feedthrough filter for medical implanted devices
First Claim
Patent Images
1. A feedthrough filter arrangement for use with an AIMD, comprising:
- a ferrule;
a feedthrough associated with said ferrule;
a plurality of conductors supported through said feedthrough; and
a corresponding plurality of discrete filters, each of said filters having at least two respective terminals, with one of said terminals associated with a respective one of said conductors, and the other of said terminals associated with said ferrule;
whereinsaid at least two respective terminals comprise side and end terminals associated respectively with said filters and said ferrule; and
each of said filters has two sets of interleaved vertical electrodes comprising ground electrodes and signal electrodes wherein said ground electrodes are associated with at least one end terminal of each respective filter so that ground is connected to said ferrule, and wherein said signal electrodes are associated with at least one side terminal of each respective filler so that signals on a respective associated conductor are connected to such associated conductor.
2 Assignments
0 Petitions
Accused Products
Abstract
Discrete cofired feedthrough filters are provided for medical implanted device applications. A plurality of discrete vertical feedthrough filter elements are respectively associated with a plurality of signal wires or pins otherwise supported by an insulating feedthrough and a ferrule. The resulting discrete device comprises a single-element device which is cheaper to make, and which reduces cross-talk between adjacent signal wires/pins while otherwise accommodating changes in feedthrough pitch without having to redesign the filter.
-
Citations
32 Claims
-
1. A feedthrough filter arrangement for use with an AIMD, comprising:
-
a ferrule; a feedthrough associated with said ferrule; a plurality of conductors supported through said feedthrough; and a corresponding plurality of discrete filters, each of said filters having at least two respective terminals, with one of said terminals associated with a respective one of said conductors, and the other of said terminals associated with said ferrule; wherein said at least two respective terminals comprise side and end terminals associated respectively with said filters and said ferrule; and each of said filters has two sets of interleaved vertical electrodes comprising ground electrodes and signal electrodes wherein said ground electrodes are associated with at least one end terminal of each respective filter so that ground is connected to said ferrule, and wherein said signal electrodes are associated with at least one side terminal of each respective filler so that signals on a respective associated conductor are connected to such associated conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A feedthrough filter arrangement for use in association with external circuitry, comprising:
-
a metal ferrule; an insulating feedthrough associated with said ferrule; a plurality of wire conductors supported through said feedthrough; and a corresponding plurality of discrete cofired filter capacitors, each of said filter capacitors having; respective end terminals; a top side terminal; a bottom side terminal; a body of dielectric material; and two sets of interleaved vertical electrodes comprising ground electrodes and signal electrodes received in said body of dielectric material, wherein each of said ground electrodes has respective projecting end portions connecting with respective end terminals of each of said filter capacitors, and each of said signal electrodes has respective projecting side portions connecting with respective side terminals of each of said filter capacitors; wherein respective end terminals of each of said filter capacitors are mounted on opposite sides of said ferrule for a ground connection therewith, and with a bottom side terminal of each of said filter capacitors connected with a respective one of said conductors for a signal connection therewith, so that each of said top side terminals of said filter capacitors are exposed for respective connections with associated external circuitry. - View Dependent Claims (18, 19, 20, 21)
-
-
22. Methodology for a feedthrough filter arrangement for use with an active implanted medical device (AIMD), comprising:
-
providing a metal ferrule; fitting an insulating feedthrough with said ferrule; supporting a plurality of conductors through said feedthrough, wherein the plurality of conductors are arranged in a double row; and connecting respectively a corresponding plurality of discrete cofired filters with said plurality of conductors, so as to reduce cross-talk between signals on adjacent of said conductors, wherein each of said filters comprises at least one end terminal and at least one side terminal, and wherein said fitters are mounted on said feedthrough in a row with end terminals thereof on alternate sides of said feedthrough. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
-
Specification