EP0060451A1
Expired / Lapsed
EP
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Iontophoretic electrode
Assignee: Medtronic Inc
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Filing: 1982-03-04
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Granted: —
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Expires: 2002-03-04
Abstract
Abstract An electrode for use in the iontophoretic introduction of an ionic substance into a body comprising an element (22, 32, 51,70, 80) composed of a mixture of the ionic substance and a polar, non-ionic adhesive. The electrode may be formed as a sheet of the mixture of a size and shape suitable for attachment to the electrode plate of an iontophoretic current generator. The mixture may be incorporated in an electrode as a means for holding the ionic substance, a means for attaching the electrode to the body, a means for attaching the iontophoretic current generator to the body, or a means for conducting the ionic current into the body. The electrode may also be employed in combination with an electrical stimulator to provide for simultaneous electrical stimulation and iontophoretic drug administration to the body.
Inventors
- 👤 Richard P. Spevak
- 👤 Gary A. Lattin
- 👤 Allan H. Jevne
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 19:02
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0432; A61N1/0436; A61N1/0452; A61N1/0456
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
63 words
An electrode for iontophoretically introducing an ionic substance (24, 34, 52, 73, 83) into body tissue, of the type having an adhesive element and a means (12, 14, 70, 80) for electrically coupling said adhesive element to an electrical device (10, 60), characterized by said element (22, 32, 51, 70, 80) being composed of a mixture of an adhesive and said ionic substance.
Claim 2
Dependent Claim
63 words
An electrode for iontophoretically introducing an ionic substance (24, 34, 52, 73, 83) into body tissue, of the type having an adhesive element and a means (12, 14, 70, 80) for electrically coupling said adhesive element to an electrical device (10, 60), characterized by said element (22, 32, 51, 70, 80) being composed of a mixture of an adhesive and said ionic substance.
Claim 3
Dependent Claim
15 words
An electrode as described in claim 1 wherein said adhesive is a polar, non-ionic adhesive.
Claim 4
Dependent Claim
33 words
An electrode as described in claim 1 or 2 wherein said ionic substance (24, 34, 52, 73, 83) is pilocarpine nitrate, lidocaine hydrochloride, hydrocortisone derivatives, acetic acid, fluoride, penicillin, or dexamethasone sodium phosphate.
Claim 5
Dependent Claim
33 words
An electrode as described in claim 1 or 3 wherein said adhesive comprises a tackifier, water and one or more components selected from the group of synthetic or naturally occurring polar, non-ionic polymers.
Claim 6
Dependent Claim
17 words
An electrode as described in any one of claims 1 to 4 and further including a humectant.
Claim 7
Dependent Claim
18 words
An electrode as described in any one of claims 1 to 5 and further including a thickening agent.
Claim 8
Dependent Claim
39 words
An electrode as described in any one of claims 4 to 6 wherein said one or more polymers includes polyvinyl pyrrolidone and said polyvinyl pyrrolidone comprises between two percent and seven percent of the total weight of said adhesive.
Claim 9
Dependent Claim
37 words
An electrode as described in any one of claims 4 to 7 wherein said one or more polymers includes gelatin and said gelatin comprises between fifteen percent and thirty percent of the total weight of said adhesive.
Claim 10
Dependent Claim
42 words
An electrode as described in any one of claims 4 to 8 wherein said tackifier is polybutene having a molecular weight between 1000 and 3000 and said polybutene comprises between fifteen percent and thirty percent of the total weight of said adhesive.
Claim 11
Dependent Claim
29 words
An electrode as described in any one of claims 4 to 9 wherein the water comprises between twenty percent and thirty-five percent of the total weight of said adhesive.
Claim 12
Dependent Claim
34 words
An electrode as described in any one of claims 5 to 10 wherein said humectant includes glycerine and said glycerine comprises between twenty percent and thirty-five percent of the total weight of said adhesive.
Claim 13
Dependent Claim
30 words
An electrode as described in any one of claims 1 to 11 and further including a means for identifying the ionic substance (24, 34, 52, 73, 83) in the electrode.
Claim 14
Dependent Claim
18 words
An electrode as described in any one of claims 1 to 12 and further including a coloring agent.
Claim 15
Dependent Claim
24 words
An electrode as described in any one of claims 1 to 13 wherein said element (51, 70, 80) is a sheet of said mixture.
Claim 16
Dependent Claim
34 words
An electrode as described in any one of claims 1 to 13 wherein said element (22, 32, 51) comprises a layer of said mixture disposed on a surface of said electrode (20, 30, 50).
Claim 17
Dependent Claim
33 words
An electrode as described in any one of claims 1 to 15 wherein said element (22, 32, 51, 70, 80) comprises a means for holding said ionic substance (24, 34, 52, 73, 83).
Claim 18
Dependent Claim
31 words
An electrode as described in any one of claims 1 to 16 wherein said element (22, 32, 51) comprises a means for attaching said electrode (20, 30, 50) to said body.
Claim 19
Dependent Claim
35 words
An electrode as described in any one of claims 1 to 17 wherein said element (70, 80) comprises a means for attaching said electrode to an electrode plate (62, 64) of an electrical device (60).
Claim 20
Dependent Claim
24 words
An electrode as described in claim 18 wherein an element further comprises a means (90) for attaching said electrical device (60) to said body.
Claim 21
Dependent Claim
32 words
An electrode as described in any one of claim 1 to 19 wherein said element (22, 51, 70) comprises a means for conducting said ionic substance (24, 52, 73) into said body.
Claim 22
Dependent Claim
32 words
An electrode as described in any one of claims 1 to 20 wherein said means for electrically coupling said element (70, 80) to an electrical device (60) comprises said element (70, 80).
Claim 23
Dependent Claim
22 words
An electrode as described in any one of claims 1 to 20 wherein said means for coupling is a wire (12, 14).
Claim 24
Dependent Claim
26 words
An electrode as described in claim 21 wherein said element (22, 32, 51, 70, 80) comprises a solid member having at least one substantially flat surface.
Claim 25
Dependent Claim
19 words
An electrode as described in claim 23 wherein said element (51, 70, 80) comprises a sheet of said mixture.
Claim 26
Dependent Claim
33 words
An electrode as described in claim 24 wherein said sheet (70, 80) is of a size and shape suitable for application to an electrode plate (62, 64) of a iontophoretic current generator (60).
Claim 27
Dependent Claim
27 words
An electrode as described in claim 24 or 25 and further comprising a removable protective liner (82) covering a broad surface of said sheet (80) of mixture.
Claim 28
Dependent Claim
33 words
An electrode as described in claim 26 and wherein there are two of said protective liners (82, 84) each covering one of the two broad surfaces of said sheet (80) of said mixture.
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