Combined pacemaker substrate and electrical interconnect and method of assembly

• US 5,144,946 A
• Filed: 08/05/1991
• Issued: 09/08/1992
• Est. Priority Date: 08/05/1991
• Status: Expired due to Term

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories)
• Original Assignee: Siemens Pacesetter, Inc. (Abbott Laboratories)
• Inventors: Maston, Robert E., Weinberg, Alvin H.
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US07/740,533
• Time in Patent Office: 400 Days
• Field of Search: 128/419 P, 128/419 PG, 128/419 PS
• US Class Current: 607/2
• CPC Class Codes: A61N 1/37512 Pacemakers
• CPC Class Codes: A61N 1/3758 Packaging of the components within the casing

Abstract

A pacemaker having a single integrated interconnect structure is disclosed which combines the functions of a flexible interconnect cable and a protective lid for a hybrid substrate. The integrated interconnect structure is a molded three-dimensional part having a lid portion and a feedthrough portion. An electronic substrate can be mounted onto the integrated interconnect structure wherein electrical conductors formed within the integrated interconnect structure connect the electronic substrate to the battery terminals and to the pacemaker feedthroughs. In one embodiment, the integrated interconnect structure may be adapted to have additional electronic circuitry mounted directly onto a flat inner cavity within the lid portion, thereby enabling electronic components to be easily added or modified without complicating the assembly operations of the pacemaker.

Claims

1. A pacemaker comprising:

a housing;

at least one electrical feedthrough terminal extending through the housing;

a battery located in the housing, the battery having two terminals extending out of a top of the battery;

an electronic substrate having electronic components mounted thereon; and

a molded integrated interconnect structure having a lid portion, at least a first, a second and a third through-hole, and conductive means integrally formed therein, the lid portion having means for receiving and protecting the electronic substrate, the first and second through-holes being connected to one each of the battery terminals, the third through-hole being connected to the electrical feedthrough terminal, the conductive means including means for electrically interconnecting the electronic substrate to the battery terminals and to the electrical feedthrough terminal.

2. The pacemaker, as recited in claim 1, further comprising:

electronic components mounted onto the integrated interconnect structure.

3. The pacemaker, as recited in claim 2, wherein the conductive means comprises:

means for electrically connecting the electronic components of the electronic substrate to the electronic components mounted onto the integrated interconnect structure.

4. The pacemaker, as recited in claim 3, wherein the means for receiving and protecting the electronic substrate comprises a circuitry housing recess.

5. The pacemaker, as recited in claim 4, wherein the electronic components mounted onto the integrated interconnect structure are mounted within the circuitry housing recess.

6. The pacemaker, as recited in claim 1, wherein:

the integrated interconnect structure has a first set of electrical contacts on a surface thereof; and

the electronic substrate has a second set of electrical contacts on a surface thereof for making electrical contact with the first set of electrical contacts.

7. The pacemaker, as recited in claim 1, further comprising:

a shock mount pad between the substrate and battery.

8. The pacemaker, as recited in claim 1, wherein the integrated interconnect structure is comprised of a molded dielectric material.

9. The pacemaker, as recited in claim 8, wherein the conductive means comprises:

conductive wires molded within the dielectric material.

10. The pacemaker, as recited in claim 8, wherein the conductive means comprises:

conductors printed on the surfaces of the molded dielectric material.

11. An electronic module for use with a pacemaker, the pacemaker having a battery with terminals, and at least one electrical feedthrough terminal for connection to a pacing lead, the electronic module comprising:

an electronic substrate having electronic components mounted thereon; and

an integrated interconnect structure having a recess for receiving and protecting the electronic substrate, the integrated interconnect structure further having conductive means for electrically connecting the electronic substrate to the battery and feedthrough terminals.

12. The electronic module, as recited in claim 11, further comprising:

electronic components mounted onto the recess of the integrated interconnect structure; and

wherein the conductive means includes means for electrically interconnecting the electronic components mounted onto the integrated interconnect structure with the electronic components mounted on the electronic substrate.

13. The electronic module, as recited in claim 11, wherein the conductive means comprises:

conductive through-holes for passage of the battery terminals and at least one feedthrough terminal therethrough.

14. The electronic module, as recited in claim 11, wherein the conductive means comprises:

conductors substantially contained inside the integrated interconnect structure with the dielectric polymer material molded thereover.

15. The electronic module, as recited in claim 11, wherein the conductive means comprises:

conductors printed on the surfaces of the molded dielectric material.

16. The electronic module, as recited in claim 11, wherein the conductive means comprises:

electrical contact means for connecting the electronic substrate to the integrated interconnect structure.

17. The electronic module, as recited in claim 11, wherein the an integrated interconnect structure is comprised of a molded dielectric polymer material.

18. An electronic package for use within a pacemaker, the pacemaker having a battery and feedthroughs, the package comprising:

an integrated interconnect structure having a recess for at least partially housing an electronic substrate, the integrated interconnect structure having conductive means integrally formed therewith;

electronic components mounted onto the recess of integrated interconnect structure and electrically interconnected by the conductors; and

means for connecting an electronic substrate to the integrated interconnect structure and the conductive means.

19. The package, as recited in claim 18, wherein the conductive means comprises:

conductive holes for receiving and making electrical connection with the battery terminals.

20. The package, as recited in claim 18, wherein the conductive means comprises:

conductive holes for receiving and making electrical connection with the feedthroughs.

21. An electronic package for use with a pacemaker, the pacemaker including a battery having battery terminals, an electronic substrate, and feedthrough terminals for connection with a pacemaker lead, the package comprising:

a integrated interconnect structure having a recess for receiving and protecting the electronic substrate, the integrated interconnect structure further having conductive means for electrically connecting the electronic substrate to the battery and feedthrough terminals.

22. The package, as recited in claim 21, further comprising electronic components mounted onto the recess of the integrated interconnect structure and electrically interconnected by the conductive means.

23. The package, as recited in claim 21, wherein the integrated interconnect structure has conductive holes for receiving and making electrical connection with the battery terminals.

24. The package, as recited in claim 21, wherein the integrated interconnect structure has conductive holes for receiving and making electrical connection with the feedthroughs.

25. The package, as recited in claim 21, wherein the integrated interconnect structure is comprised of a molded dielectric polymer material.

26. A method of manufacturing a pacemaker comprising steps of:

providing a battery with battery terminals;

providing electrical feedthroughs extending through a pacemaker housing;

mounting electronic components onto a substrate;

mounting the substrate onto an integrated interconnect structure to form an electronic module, the interconnect structure comprising dielectric material having a cavity molded therein and conductors integrally formed therewith, the interconnect structure further having a plurality of through-holes molded therein for the positioning of the battery terminals and the electrical feedthroughs;

mounting the electronic module on the top of the battery so that the battery terminals extend through two of the plurality of through-holes; and

positioning the battery, the integrated interconnect structure and the electronic module in the pacemaker housing with the feedthroughs extending through the housing into through-holes within the integrated interconnect structure.

27. The method, as recited in claim 26, comprising steps of:

mounting electronic components onto the cavity molded within the integrated interconnect structure.