Nerve electrode with biological substrate
First Claim
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1. An electrode comprising:
- a. a substrate of a plurality of layers of a treated biological material wherein at least a first of said plurality of layers is separated from a second of said plurality of layers by a third layer of a material different from said treated biological material;
b. a conducting surface attached to said substrate; and
,c. a lead electrically coupled to said conducting surface.
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Abstract
An electrode and method of making same characterized by a biological material used as a substrate. The electrode is used primarily as a stimulation electrode, but could also be used to monitor electrical activity of neural tissues. The biological substrate is a chronically implantable material of treaterd human or animal tissue. The use of this material tends to prevent undue fibrosis and necrosis of the nerve tissue. An inner layer of a non-biologic dielectric may be used to increase to resistivity of the structure. Similarly an inner layer of shielding material may also be used.
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Citations
5 Claims
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1. An electrode comprising:
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a. a substrate of a plurality of layers of a treated biological material wherein at least a first of said plurality of layers is separated from a second of said plurality of layers by a third layer of a material different from said treated biological material; b. a conducting surface attached to said substrate; and
,c. a lead electrically coupled to said conducting surface. - View Dependent Claims (2, 3, 4)
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5. A method of making an electrode comprising:
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a. making a substrate by treating a plurality of layers of a biological material for chronic implantation; b. placing a layer of a non-biological material between said plurality of layers of said biological material; c. fixedly attaching a conductor to a side of said substrate; and
,d. electrically coupling a lead to said conductor.
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Specification
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Current AssigneeMedtronic Incorporated (Medtronic Plc)
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Original AssigneeMedtronic Incorporated (Medtronic Plc)
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InventorsLee, Philip H. J., Grandjean, Pierre A.
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Primary Examiner(s)Cohen, Lee S.
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Application NumberUS07/446,865Time in Patent Office587 DaysField of Search128/642, 128/784-786, 128/419 CUS Class Current600/377CPC Class CodesA61B 5/25 Bioelectric electrodes ther...A61B 5/293 InvasiveA61N 1/0551 Spinal or peripheral nerve ...
