MANUFACTURING AN ELECTRODE CARRIER FOR AN IMPLANTABLE MEDICAL DEVICE

• US 20100287770A1
• Filed: 05/14/2009
• Published: 11/18/2010
• Est. Priority Date: 05/14/2009
• Status: Abandoned Application

• Current Assignee: Cochlear Limited
• Original Assignee: Cochlear Limited
• Inventors: Mackiewicz, Miroslaw, Gibson, Peter, Treaba, Claudiu, Dadd, Fysh, Darley, Derek Ian, Parker, John L., Milojevic, Dusan
• Application Number:
  US12/466,254
• Publication Number:
  US 20100287770A1
• Time in Patent Office: Days
• US Class Current: 29/877
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61N 1/0541 Cochlear electrodes
• CPC Class Codes: Y10T 29/4921 with bonding

Abstract

According to one aspect of the present invention, there is provided a method for manufacturing an electrode carrier comprising one or more electrode contacts of an implantable medical device, comprising: coupling at least one electrode to a base plate, securing the base plate in a mold, injecting the mold with injection material at least partially around the at least one electrode coupled to the base plate, curing the injected material, and decoupling the at least one electrode from the base plate such that the cured injection material is separated from the base plate.

Claims

1. A method for manufacturing an implantable assembly of a medical device, the assembly comprising a carrier with one or more electrode contacts disposed there in, comprising:

coupling at least one electrode to a base plate;

securing the base plate in a mold;

injecting the mold with injection material at least partially around said at least one electrode;

curing the injected material; and

decoupling said at least one electrode from the base plate such that said cured injection material is separated from said base plate.

2. The method of claim 1, further comprising:

deforming said at least one electrode from a first shape to a second shape, wherein said coupled at least one electrode is a deformed electrode.

3. The method of claim 2, wherein said second shape is a “

u”

shape.

4. The method of claim 1, further comprising:

electrically coupling a conductive wire to each of said at least one electrode prior to said injecting the mold with injection material.

5. The method of claim 4, further comprising:

depositing silicone on said conductive wire where said electrode and said conductive wire are electrically coupled.

6. The method of claim 1, further comprising:

positioning an elongate rod in said mold prior to said injecting the mold with injection material such that a lumen longitudinally extending in said electrode carrier is formed upon said injecting the mold.

7. The method of claim 1, wherein said base plate comprises platinum.

8. The method of claim 1, wherein coupling at least one electrode to a base plate comprises welding at least one electrode to a base plate.

9. The method of claim 8, wherein said welding comprises resistance welding.

10. The method of claim 9, further comprising washing said assembly after said decoupling said at least one electrode from the base plate.

11. The method of claim 8, wherein said decoupling of said at least one electrode from the base plate is by cutting said at least one welded electrode from said base plate.

12. The method of claim 1, wherein coupling at least one electrode to a base plate comprises bonding at least one electrode to a base plate.

13. The method of claim 12, wherein said decoupling at least one electrode from the base plate comprises disbonding said at least one bonded electrode from said base plate.

14. The method of claim 12, wherein bonding at least one electrode to a base plate comprises applying an electrodisbonding adhesive between at least one electrode and a base plate.

15. The method of claim 14, wherein said decoupling of said at least one electrode from the base plate comprises applying a current to said conductive wire to disband said at least one electrode from said base plate.

16. The method of claim 15, further comprising:

coupling the base plate to a power source, and wherein said decoupling said at least one electrode from the base plate further comprises conducting an electrical current through said base plate and said at least one electrode.

17. The method of claim 16, further comprising washing said assembly after said decoupling said at least one electrode from the base plate.

18. The method of claim 1, wherein said decoupling at least one electrode from the base plate comprises etching away said base plate from said at least one electrode.

19. The method of claim 18, wherein said etching away said at least one electrode from the base plate comprises exposing said base plate to a chemical etchant.

20. The method of claim 18, wherein said etching comprises laser etching.

21. The method of claim 1, wherein said injection material comprises curable silicone polymer.

22. The method of claim 1, further comprising:

washing said decoupled electrode carrier.

23. The method of claim 1, wherein said mold is a curved mold such that said electrode carrier manufactured in said curved mold is curved.

24. The method of claim 23, further comprising curving said base plate following said coupling at least one electrode to the base plate.

25. The method of claim 1, further comprising curing said injected injection material.

26. The method of claim 1, wherein said coupling at least one electrode to the base plate further comprises inserting the at least one electrode into a longitudinal channel disposed longitudinally along the base plate and configured to retain the at least one electrode during said injecting the mold with injection material.

27. The method of claim 1, wherein said coupling at least one electrode to the base plate further comprises inserting the at least one electrode into one of a plurality of recesses disposed longitudinally along the base plate and configured to retain the at least one electrode during said injecting the mold with injection material.

28. A system for manufacturing an implantable assembly of a medical device, the assembly comprising a carrier with one or more electrode contacts disposed there in, comprising:

means for coupling the one or more electrode contacts to a base plate;

means for securing the base plate in a mold;

means for injecting the mold with injection material at least partially around the one or more electrode contacts;

means for curing the injected material; and

means for decoupling the one or more electrode contacts from the base plate such that said cured injection material is separated from said base plate.

29. The system of claim 28, further comprising:

means for depositing of silicone on said conductive wire where the one or more electrode contacts and said conductive wire are electrically coupled.

30. The system of claim 28, wherein said means for coupling the one or more electrode contacts to a base plate comprises means for welding the one or more electrode contacts to a base plate.

31. The system of claim 30, wherein said means for decoupling of said the one or more electrode contacts from the base plate comprises means for cutting said the one or more welded electrode contacts from said base plate.

32. The system of claim 28, wherein said means for coupling the one or more electrode contacts to a base plate comprises means for bonding the one or more electrode contacts to a base plate.

33. The system of claim 32, wherein said means for bonding the one or more electrode contacts to a base plate comprises means for applying an electrodisbonding adhesive between the one or more electrode contacts and a base plate.