Method of routing electrical current to bodily tissues via implanted passive conductors
First Claim
1. An implant for electrically stimulating a target body tissue in a subject, the implant, once implanted, providing a conductive pathway for at least a portion of the electrical current flowing between surface cathodic and anodic electrodes positioned in spaced relationship on the subject'"'"'s skin and transmitting that portion of the electrical current to the target body tissue, the implant comprising:
- a passive electrical conductor of sufficient length to extend, once implanted, from subcutaneous tissue located below the surface cathodic electrode to the target body tissue, the electrical conductor having a pick-up end and a stimulating end and being insulated between its ends, the pick-up end forming an electrical termination having a sufficient surface area to allow a sufficient portion of the electrical current to flow through the conductor, in preference to flowing through body tissue between the surface cathodic and anodic electrodes, such that the target body tissue is stimulated, and the stimulating end forming an electrical termination for delivering the portion of electrical current to the target body tissue.
5 Assignments
0 Petitions
Accused Products
Abstract
The invention provides an implant, system and method for electrically stimulating a target tissue to either activate or block neural impulses. The implant provides a conductive pathway for a portion of electrical current flowing between surface electrodes positioned on the skin and transmits that current to the target tissue. The implant has a passive electrical conductor of sufficient length to extend from subcutaneous tissue located below a surface cathodic electrode to the target tissue. The conductor has a pick-up end which forms an electrical termination having a sufficient surface area to allow a sufficient portion of the electrical current to flow through the conductor, in preference to flowing through body tissue between the surface electrodes, such that the target tissue is stimulated to either activate or block neural impulses. The conductor also has a stimulating end which forms an electrical termination for delivering the current to the target body tissue.
135 Citations
48 Claims
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1. An implant for electrically stimulating a target body tissue in a subject, the implant, once implanted, providing a conductive pathway for at least a portion of the electrical current flowing between surface cathodic and anodic electrodes positioned in spaced relationship on the subject'"'"'s skin and transmitting that portion of the electrical current to the target body tissue, the implant comprising:
a passive electrical conductor of sufficient length to extend, once implanted, from subcutaneous tissue located below the surface cathodic electrode to the target body tissue, the electrical conductor having a pick-up end and a stimulating end and being insulated between its ends, the pick-up end forming an electrical termination having a sufficient surface area to allow a sufficient portion of the electrical current to flow through the conductor, in preference to flowing through body tissue between the surface cathodic and anodic electrodes, such that the target body tissue is stimulated, and the stimulating end forming an electrical termination for delivering the portion of electrical current to the target body tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for electrically stimulating a target body tissue in a subject comprising:
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i) surface cathodic and anodic electrodes for making electrical contact with the subject'"'"'s skin, and which, when positioned in spaced relationship on the subject'"'"'s skin, for transmitting electrical current to the target body tissue;
ii) a stimulator external to the subject'"'"'s body, electrically connected to the surface cathodic and anodic electrodes, the stimulator supplying direct, pulsatile, or alternating current to the surface cathodic and anodic electrodes; and
iii) an implant for picking up a portion of the electrical current flowing between the surface cathodic and anodic electrodes and transmitting that portion of the electrical current to the target body tissue, the implant comprising a passive electrical conductor of sufficient length to extend, once implanted, from subcutaneous tissue located below the surface cathodic electrode to the target body tissue, the electrical conductor having a pick-up end and a stimulating end and being insulated between its ends, the pick-up end forming an electrical termination having a sufficient surface area to allow a sufficient portion of the electrical current being applied to flow through the conductor, in preference to current flowing through body tissue between the surface cathodic and anodic electrodes, such that the target body tissue is stimulated, and the stimulating end forming an electrical termination for delivering the portion of electrical current to the target body tissue. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for electrically stimulating a target body tissue in a subject comprising the steps of:
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a) providing an implant to act as a conductive pathway for at least a portion of the electrical current flowing between surface cathodic and anodic electrodes positioned in spaced relationship on the subject'"'"'s skin and transmitting the portion of the electrical current to the target body tissue, the implant comprising a passive electrical conductor of sufficient length to extend, once implanted, from subcutaneous tissue located below the surface cathodic electrode to the target body tissue, the electrical conductor having a pick-up end and a stimulating end and being insulated between its ends, the pick-up end forming an electrical termination having a sufficient surface area to allow a sufficient portion of the electrical current to flow through the conductor, in preference to flowing through body tissue between the surface cathodic and anodic electrodes, such that the target body tissue is stimulated, and the stimulating end forming an electrical termination for delivering the portion of electrical current to the target body tissue;
b) implanting the implant entirely under the subject'"'"'s skin, with the pick-up end positioned in subcutaneous tissue located below the surface cathodic electrode, and the stimulating end positioned proximate to the target body tissue;
c) positioning the surface cathodic and anodic electrodes in spaced relationship on the subject'"'"'s skin, with the surface cathodic electrode positioned over the pick-up end of the electrical conductor so the portion of the current is transmitted through the conductor to the target body tissue, and so that the current flows through the target body tissue and returns to the anodic surface electrode through body tissues or through an implanted electrical return conductor extending between the target body tissue and subcutaneous tissue located below the surface anodic electrode; and
d) applying direct, pulsatile or alternating electrical current between the surface cathodic electrode and the surface anodic electrode to cause the portion of the electrical current to flow through the implant sufficient to stimulate the target body tissue. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of treating a disorder in a subject comprising the steps of:
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a) providing an implant to act as a conductive pathway for at least a portion of the electrical current flowing between surface cathodic and anodic electrodes positioned in spaced relationship on the subject'"'"'s skin and transmitting the portion of the electrical current to the target body tissue, the implant comprising a passive electrical conductor of sufficient length to extend, once implanted, from subcutaneous tissue located below the surface cathodic electrode to the target body tissue, the electrical conductor having a pick-up end and a stimulating end and being insulated between its ends, the pick-up end forming an electrical termination having a sufficient surface area to allow a sufficient portion of the electrical current to flow through the conductor, in preference to flowing through body tissue between the surface cathodic and anodic electrodes, such that the target body tissue is blocked, and the stimulating end forming an electrical termination for delivering the portion of electrical current to the target body tissue;
b) implanting the implant entirely under the subject'"'"'s skin, with the pick-up end positioned in subcutaneous tissue located below the surface cathodic electrode, and the stimulating end positioned proximate to the target body tissue;
c) positioning the surface cathodic and anodic electrodes in spaced relationship on the subject'"'"'s skin, with the surface cathodic electrode positioned over the pick-up end of the electrical conductor so the portion of the current is transmitted through the conductor to the target body tissue, and so that the current flows through the target body tissue and returns to the anodic surface electrode through body tissues or through an implanted electrical return conductor extending between the target body tissue and subcutaneous tissue located below the surface anodic electrode; and
d) applying electrical current between the surface cathodic electrode and the surface anodic electrode in a cyclical waveform at a frequency capable of blocking the target body tissue so as to treat the disorder. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification