Nerve cuff electrode carrier

• US 5,899,933 A
• Filed: 06/16/1997
• Issued: 05/04/1999
• Est. Priority Date: 06/16/1997
• Status: Expired due to Term

• Current Assignee: AXON Engineering, Inc.
• Original Assignee: AXON Engineering, Inc.
• Inventors: Bhadra, Narendra, Mortimer, J. Thomas
• Primary Examiner(s): COHEN, LEE S
• Application Number:
  US08/876,790
• Time in Patent Office: 687 Days
• Field of Search: 607/117, 607/118, 600/377, 600/393
• US Class Current: 607/118
• CPC Class Codes: A61N 1/0556 Cuff electrodes

Abstract

A device for coupling nerve cuff electrodes for stimulating nerves to a signal source for applying electrical signals for activation. The device comprises a carrier plate composed of a non-conductive material which contains a series of grooves for receiving selected nerve trunks. On either side of each groove is located a slot along the length of the groove, and a plurality of contacts are embedded within each groove. The contacts are releasably coupled to a power source which supplies a stimulating signal to the nerves. A spiral cuff electrode is wrapped through the slots to secure the nerve within the contact and provide for electrical conduction.

Claims

1. A device for coupling spiral cuff electrodes to nerves for applying electrical signals from a signal generator to a nerve trunk to stimulate a nerve in a mammal, comprising:

a carrier plate, formed from a non-conductive material, having a plurality of grooves formed therein, with each groove capable of accommodating at least one nerve trunk, said plate having a pair of through slots associated with each groove wherein said groove is positioned between said slots;

a plurality of electrically conductive contacts, each having a hollow hemicylindical outer surface, located within each groove;

and an electrical conductor, located within said carrier plate, associated with each groove, for coupling said contacts to a signal generator;

such that when a nerve trunk is positioned within a groove of said carrier plate in physical contact with the outer surface of said contacts and a spiral cuff electrode is positioned within said slots of said carrier plate encircling said nerve trunk and in physical contact with the nerve trunk, electrical signals from a signal generator may be applied through said electrical conductor and said contacts to the nerve trunk to stimulate the nerve.

2. The device of claim 1, wherein said plate is formed from molded silicone rubber.

3. The device of claim 1, wherein said contacts are constructed from platinum.

4. The device of claim 1, wherein said contacts are constructed from iridium.

5. The device of claim 1, wherein said plurality of contacts consists of three contacts within each groove.

6. The device of claim 5, wherein at least one contact acts as an anode and at least one contact acts as a cathode.

7. The device of claim 5, wherein two of said contacts are electrically coupled together.

8. The device of claim 1, wherein each conductor consists of two separate leads.

9. The device of claim 1, wherein said electrical conductor is adapted to be releasably coupled to said signal generator.

10. The device of claim 1, wherein the maximum number of grooves contained in said plate is six.

11. A device for coupling a spiral cuff electrode to a nerve for applying electrical signals for a signal generator to stimulate a nerve trunk of a mammal, comprising:

a carrier plate, formed from a non-conductive material, having at least one groove formed therein capable of receiving a nerve trunk, said plate having a through slot located adjacent each side of said groove;

at least one electrically conductive contact located within said groove, said contact having a hollow hemicylindrical upper surface;

and means for electrically coupling said contact to a signal generator;

such that, when a nerve trunk is positioned within said groove in physical contact with said contact and a spiral cuff electrode is coupled to said carrier plate through said slots encircling and in physical contact with the nerve trunk, electrical signals from a signal generator may be applied through said electrical coupling means and said contact to stimulate the nerve trunk.

12. The device of claim 11, wherein said electrical coupling means is adapted to be coupled to said signal generator through an in-line connector.

13. The device of claim 11, wherein said contact is constructed from platinum.

14. The device of claim 11, wherein said contact is constructed from iridium.

15. The device of claim 11, wherein said plate is formed from silicone rubber.