Steroid eluting cuff electrode for peripheral nerve stimulation

Details Steroid eluting cuff electrode for peripheral nerve stimulation Steroid eluting cuff electrode for peripheral nerve stimulation

A - Human Necessities

61

N

A61N 1/05 (2006.01)

Patent

CA 2070673

2070673 9112850 PCTABS00007 An electrode for establishing electrical contact with a nerve of a patient has an outer cuff (15) of an insulating material which is sutured around the nerve to be contacted. A drug impregnated layer (16) of material is positioned inside of the outer cuff. This material is a polymeric matrix which permits the drug to leach out at a predetermined rate. The drug is a steroid such as dexamethasone sodium phosphate. The actual electrical contact is produced by metallic foil (12, 13) which is positioned on the surface of the drug impregnated layer of material which is located inside of the cuff. An insulated lead (9) electrically couples the metallic foil to an electronic circuit located remote from the nerve. The leaching out of the drug serves to control irritation, swelling and impedance of the nerve/electrode interface.

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