Implantable stimulator device having components embedded in a circuit board
First Claim
1. An implantable stimulator device, comprising:
- a plurality of electrodes configured to contact tissue of a patient;
a circuit board having a top surface and a bottom surface;
current distribution circuitry integrated on an integrated circuit mounted to the top surface of the circuit board, wherein the current distribution circuitry comprises source circuitry configured to generate a current at one or more of a plurality of selectable outputs, each output coupled to one of the electrodes via an electrode current path; and
a plurality of DC-blocking capacitors, each DC-blocking capacitor coupled in series in one of the electrode current paths,wherein the DC-blocking capacitors are embedded below the top surface and above the bottom surface of the circuit board.
1 Assignment
0 Petitions
Accused Products
Abstract
An improved circuit board for an implantable stimulator device is disclosed having components embedded within the device'"'"'s circuit board, and in particular having embedded components in the electrodes current paths, such as various numbers and/or combinations of DC-blocking capacitors, EMI filtering capacitors, and EMI filtering inductors. By embedding at least some of these components, the improved circuit board can accommodate additional IPG circuitry, or can be made smaller, which is significant given the trend to increase the number of electrodes in such devices. In a preferred embodiment, at least the filtering capacitors are embedded in the circuit board, while the DC-blocking capacitors are traditionally surface mounted, without reducing the number of DC-blocking capacitors compared to the number of electrodes the IPG supports.
72 Citations
23 Claims
-
1. An implantable stimulator device, comprising:
-
a plurality of electrodes configured to contact tissue of a patient; a circuit board having a top surface and a bottom surface; current distribution circuitry integrated on an integrated circuit mounted to the top surface of the circuit board, wherein the current distribution circuitry comprises source circuitry configured to generate a current at one or more of a plurality of selectable outputs, each output coupled to one of the electrodes via an electrode current path; and a plurality of DC-blocking capacitors, each DC-blocking capacitor coupled in series in one of the electrode current paths, wherein the DC-blocking capacitors are embedded below the top surface and above the bottom surface of the circuit board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An implantable stimulator device, comprising:
-
a plurality of electrodes configured to contact tissue of a patient; a circuit board having a top surface and a bottom surface; current distribution circuitry integrated on an integrated circuit mounted to the top surface of the circuit board, wherein the current distribution circuitry comprises source circuitry configured to generate a current at one or more of a plurality of selectable outputs, each output coupled to one of the electrodes via an electrode current path; a plurality of DC-blocking capacitors, each DC-blocking capacitor coupled in series in one of the electrode current paths; and a plurality of filtering capacitors, each filtering capacitor coupled in parallel between one of the electrode current paths and a reference potential, wherein the DC-blocking capacitors are embedded below the top surface and above the bottom surface of the circuit board. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification