Articulated neural electrode assembly

• US 7,107,097 B2
• Filed: 01/14/2004
• Issued: 09/12/2006
• Est. Priority Date: 01/14/2004
• Status: Expired due to Fees

• Current Assignee: Advanced Neuromodulation Systems Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Northstar Neuroscience, Inc.
• Inventors: Kinsella, Amy C., Stern, Corrinne, Fowler, Bradford C., Wyler, Allen
• Primary Examiner(s): Bockelman, Mark
• Application Number:
  US10/707,818
• Publication Number:
  US 20050154435A1
• Time in Patent Office: 972 Days
• Field of Search: 607/129, 607/115, 607/116, 607/148, 607/149, 607/152, 607/139, 600373-381
• US Class Current: 607/2
• CPC Class Codes: A61N 1/0529 Electrodes for brain stimulation
• CPC Class Codes: A61N 1/0531 Brain cortex electrodes
• CPC Class Codes: A61N 1/0539 Anchoring of brain electrode systems, e.g. within burr hole
• CPC Class Codes: A61N 1/0553 Paddle shaped electrodes, e.g. for laminotomy

Abstract

Apparatuses, devices, and/or systems that may be configured for placement at one or more cortical and/or other neuroanatomical sites to provide electrical stimulation and/or monitor neuroelectric activity within a patient. In one embodiment, an implantable articulated electrode assembly may include an array of electrodes or electrical contacts carried by a support member configured to be implanted or positioned relative to a set of neuroanatomical sites. Various embodiments of the articulated electrode assemblies may comprise multiple portions, segments, paddles, and/or panels having spatially divergent placement capabilities in relation to one another. Such segments or panels may be positioned in a variety of manners relative to each other and/or one or more neuroanatomical sites or locations, which may facilitate establishment of an intended type of stimulation field distribution and/or monitoring configuration.

Claims

1. An articulated electrode assembly, said assembly comprising:

at least three electrode paddles, each electrode paddle positioned adjacent another electrode paddle and comprising;

a support member;

a set of electrical contacts carried by said support member for contacting a patient; and

an electrical lead wire at least partially carried by said support member and coupled to at least one electrical contact; and

at least one coupling member positioned between each set of adjacent sides of said at least three electrode paddles and having a narrowed portion relative to said adjacent sides so as to aid in the decoupling of said electrode paddles from one another wherein said electrical wires carried by said support members are of different lengths relative to one another thereby facilitating different spacing between the electrode paddles when uncoupled.

2. The articulated electrode assembly of claim 1, wherein

at least one coupling member is substantially smaller in volume than at least one paddle.

3. The articulated electrode assembly of claim 1, wherein

the support member has at least one layer is configured with

a set of recesses for supporting the at least one electrical contact, and at least one support member layer is substantially flexible,

said at least one layer having at least one contact aperture formed therein, the at least one aperture facilitating electrical conductivity.

4. The articulated electrode assembly of claim 3, wherein

at least one support member layer is configured to have a contoured shape.

5. The articulated electrode assembly of claim 1, wherein

a subset of the electrical contacts comprises a single formed structure having a first tissue contact side.

6. The articulated electrode assembly of claim 1, wherein

at least one support member has a major axis and a minor axis of different dimensions.

7. The articulated electrode assembly of claim 6, wherein

the minor axis has at least one recessed waist portion.

8. The articulated electrode assembly of claim 1, wherein

each of the support members is comprised of an upper and lower layer of material,

and wherein the set of stimulation paddles comprises at least two paddles,

and wherein each of the upper and lower layers has a conduit formed therein, and

wherein each of the conduits matingly oppose one another, forming a passageway to carry a portion of the electrical lead wire.

9. The articulated electrode assembly of claim 1, wherein

the support member of at least one of the paddles is of a different dimension than the support member of another paddle.

10. The articulated electrode assembly of claim 1, wherein

the set of electrical contacts comprises at least two electrical contacts having different dimensions.

11. The articulated electrode assembly of claim 1, wherein

said support member is configured to allow at least partial exposure of said set of electrical contacts for electrical communication at a neuroanatomical site.

12. The articulated electrode assembly of claim 1, wherein

the coupling member is configured to couple the set of paddles in a fixed spatial relationship, and

wherein the coupling member includes at least one detachment portion that facilitates detachment of the first and second paddles from each other.

13. The articulated electrode assembly of claim 12, wherein

the coupling member has a separation mechanism configured for separable coupling to another paddle, and

wherein at least one of said coupling members is physically decouplable with the separation mechanism.

14. The articulated electrode assembly of claim 13, wherein

the separation mechanism comprises at least one perforation.

15. The articulated electrode assembly of claim 13, wherein

said coupling member comprises a contiguous strip.

16. An articulated electrode assembly, said assembly comprising:

a set of paddles, each paddle positioned adjacent another electrode paddle and comprising;

a support member;

a set of electrical contacts carried by the support member for contacting a patient; and

a set of electrical leads comprising at least one electrical lead wire,

each electrical lead wire being coupled to an electrical contact, and

each electrical lead wire at least partially carried by at least one support member

at least one coupling member positioned between adjacent sides of said set of paddles and holding said set of paddles spaced from one another, said coupling member being narrower in dimension than said adjacent paddles sides and having a perforated portion.

17. The articulated electrode assembly of claim 16,

wherein at least two of the electrical lead wires have a different length.

18. The articulated electrode assembly of claim 16, wherein

at least one electrical lead has at least one visible indicator corresponding to its length.

19. The articulated electrode assembly of claim 16, wherein

the at least one coupling member includes at least one attachment aperture.

20. An implantable electrical system, said system comprising:

(a) an articulated electrode assembly, said assembly comprising;

at least three electrode paddles, each electrode paddle positioned adjacent another paddle and comprising;

a support member;

a set of electrical contacts carried by said support member for contacting a patient; and

at least one coupling member positioned between each set of adjacent sides of said at least three electrode paddles and having a narrowed portion relative to said adjacent sides so as to aid in the decoupling of said electrode paddles from one another; and

(b) a pulse generating device; and

(c) a set of lead wires, each wire of said set at least partially carried by one of said support members and coupling at least one electrical contact of each paddle to said pulse generating device, wherein said electrical wires carried by said support members are of different lengths relative to one another thereby facilitating different spacing between electrode paddles when uncoupled;

(d) wherein said articulated electrode assembly, pulse generating device and set of lead wires are dimensioned and configured for implantation within a patient and comprised of biocompatible materials.

21. A method for implanting a neural electrode assembly within a patient, said method comprising:

determining a set of neural target sites;

providing access to said target sites;

physically decoupling a set of coupling members spanning between a set of paddles whereby said decoupling provides for paddle detachment and separation from each other;

said paddles having a set of electrical contacts; and

implanting each of said paddles relative to the target sites.

22. The method of claim 21, further comprising:

spatially adjusting an orientation of said paddles; and

providing electrical communication with said target site via said set of electrical contacts.

23. The method of claim 21, wherein

said physically decoupling step comprises one from the group of detaching and dividing said coupling members.

24. The method of claim 21, wherein

said placing step comprises placing said paddles at a set of neuroanatomical sites.

25. The method of claim 24, wherein

at least one neuroanatomical site comprises one from the group of an epidural and a subdural site.

26. The method of claim 21, wherein

said providing step comprises providing surgical access to an implantation target site, and

said providing surgical access step comprises performing one from the group of an incision, a craniotomy, and a burr hole procedure.