US5087241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iontophoresis electrode with reservoir and injection site
Assignee: DJO LLC
•
Filing: 1990-07-24
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Granted: 1992-02-11
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Expires: 2010-07-24
Abstract
Abstract An iontophoresis electrode configured for positioning on a patient's skin during a drug treatment. The electrode includes a flexible backing layer having a first surface with an adhesive layer for holding the electrode together and for securing the electrode to the skin. A conductive material layer adheres to the adhesive layer. An absorbent pad layer, positioned adjacent the conductive material layer, holds a drug solution during the treatment. A dispersive material layer overlies the absorbent pad layer to disperse the solution evenly about a skin-electrode interface. The dispersive material layer and the flexible backing layer enclose the conductive material layer and the absorbent pad layer. A plurality of radially oriented slits extend through the conductive material layer at an aperture in the adhesive backing layer to form a site at which the drug solution can be injected into the absorbent pad layer. A snap-type electrical contact is attached to the conductive material layer.
Inventors
- 👤 George E. Mathiesen
- 👤 Stacy D. Mattson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:29
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0432; A61N1/044; A61N1/0448
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
173 words
An iontophoresis electrode configured for placement on a patient's skin during a drug treatment, the electrode comprising: a flexible backing layer having an aperture and a first surface, the first surface having an adhesive layer for holding the electrode together and for securing the electrode to the skin; a conductive material layer attached to the adhesive layer; an absorbent pad layer positioned adjacent the conductive material layer, the pad layer holding a drug solution; a thin, dispersive material layer which overlies the absorbent pad layer to disperse the solution evenly about a skin-electrode interface, wherein the dispersive material layer and the flexible backing layer enclose the conductive material layer and the absorbent pad layer; a plurality of radially oriented slits through the conductive material layer at the aperture in the flexible backing layer, the slits and aperture forming a site at which to inject the drug solution into the absorbent pad layer; and an electrical contact attached to the conductive material layer, the contact providing a connection for coupling to a power source.
Claim 2
Dependent Claim
173 words
An iontophoresis electrode configured for placement on a patient's skin during a drug treatment, the electrode comprising: a flexible backing layer having an aperture and a first surface, the first surface having an adhesive layer for holding the electrode together and for securing the electrode to the skin; a conductive material layer attached to the adhesive layer; an absorbent pad layer positioned adjacent the conductive material layer, the pad layer holding a drug solution; a thin, dispersive material layer which overlies the absorbent pad layer to disperse the solution evenly about a skin-electrode interface, wherein the dispersive material layer and the flexible backing layer enclose the conductive material layer and the absorbent pad layer; a plurality of radially oriented slits through the conductive material layer at the aperture in the flexible backing layer, the slits and aperture forming a site at which to inject the drug solution into the absorbent pad layer; and an electrical contact attached to the conductive material layer, the contact providing a connection for coupling to a power source.
Claim 3
Dependent Claim
17 words
The iontophoresis electrode of claim 1 wherein the flexible backing layer includes a sheet of adhesive tape.
Claim 4
Dependent Claim
15 words
The iontophoresis electrode of claim 2 wherein the flexible backing layer includes polyvinyl chloride foam.
Claim 5
Dependent Claim
16 words
The iontophoresis electrode of claim 2 wherein the adhesive layer includes medical grade acrylic pressure-sensitive adhesive.
Claim 6
Dependent Claim
16 words
The iontophoresis electrode of claim 1 wherein the conductive material layer includes carbon loaded silicone rubber.
Claim 7
Dependent Claim
18 words
The iontophoresis electrode of claim 5 wherein the conductive material layer has a maximum resistivity of 10 ohms-cm.
Claim 8
Dependent Claim
15 words
The iontophoresis electrode of claim 1 wherein the absorbent pad layer includes polyester fiber fill.
Claim 9
Dependent Claim
17 words
The iontophoresis electrode of claim 1 wherein the dispersive material layer includes a sheet of filter paper.
Claim 10
Dependent Claim
19 words
The iontophoresis electrode of claim 8 wherein the sheet of filter paper includes a sheet of absorbent low-particle polyester-cellulose.
Claim 11
Dependent Claim
21 words
The iontophoresis electrode of claim 1 wherein the aperture is formed by a generally cylindrical hole in the flexible backing layer.
Claim 12
Dependent Claim
35 words
The iontophoresis electrode of claim 1 wherein the aperture is formed by a plurality of radially oriented slits through the flexible backing layer that are substantially coincident with the slits through the conductive material layer.
Claim 13
Dependent Claim
15 words
The iontophoresis electrode of claim 1 wherein the electrode includes a plurality of injection sites.
Claim 14
Dependent Claim
28 words
The iontophoresis electrode of claim 1 and further comprising: a removable protective layer that overlies the dispersive material layer and the adhesive layer of the flexible backing layer.
Claim 15
Dependent Claim
29 words
The iontophoresis electrode of claim 1 wherein at least portions of the conductive material layer, the absorbent pad layer and the dispersive material layer adhere to the adhesive layer.
Claim 16
Dependent Claim
69 words
The iontophoresis electrode of claim 14 wherein: the conductive material layer has a perimeter; the absorbent pad layer has a perimeter which extends beyond the perimeter of the conductive material layer so that the absorbent pad layer adheres to the adhesive layer; and the dispersive layer has a perimeter which extends beyond the perimeter of the absorbent pad layer so that the dispersive layer adheres to the adhesive layer.
Claim 17
Dependent Claim
19 words
The electrode of claim 1 wherein the electrical contact includes a snap-type fastener mounted to the conductive material layer.
Claim 18
Dependent Claim
41 words
The iontophoresis electrode of claim 16 wherein the snap-type fastener includes an eyelet and a stud positioned on opposite faces of the conductive material layer, the stud having a post extending through the conductive material layer for connection with the eyelet.
Claim 19
Dependent Claim
18 words
The iontophoresis electrode of claim 17 wherein the eyelet includes conductive material and the stud includes nonconductive material.
Claim 20
Dependent Claim
19 words
The iontophoresis electrode of claim 16 wherein the flexible backing layer includes an aperture coincident with the snap-type fastener.
Claim 21
Dependent Claim
156 words
An iontophoresis electrode comprising: a flexible adhesive tape layer having a first aperture and having a periphery for holding the electrode to the skin of a patient; a conductive layer adhered to the adhesive tape layer; an absorbent pad layer adjacent the conductive layer with a perimeter extending beyond a perimeter of the conductive layer so that the periphery of the absorbent pad layer adheres to the adhesive tape layer; a thin, dispersive layer adjacent the absorbent pad layer with a perimeter extending beyond the perimeter of the absorbent pad layer so that the periphery of the dispersive layer adheres to the adhesive tape layer; a plurality of radially oriented slits through the conductive layer, coincident with the first aperture in the adhesive tape layer, the slits and the first aperture forming a site at which a drug solution can be injected into the absorbent pad layer; and an electrical contact attached to the conductive layer.
Claim 22
Dependent Claim
156 words
An iontophoresis electrode comprising: a flexible adhesive tape layer having a first aperture and having a periphery for holding the electrode to the skin of a patient; a conductive layer adhered to the adhesive tape layer; an absorbent pad layer adjacent the conductive layer with a perimeter extending beyond a perimeter of the conductive layer so that the periphery of the absorbent pad layer adheres to the adhesive tape layer; a thin, dispersive layer adjacent the absorbent pad layer with a perimeter extending beyond the perimeter of the absorbent pad layer so that the periphery of the dispersive layer adheres to the adhesive tape layer; a plurality of radially oriented slits through the conductive layer, coincident with the first aperture in the adhesive tape layer, the slits and the first aperture forming a site at which a drug solution can be injected into the absorbent pad layer; and an electrical contact attached to the conductive layer.
Claim 23
Dependent Claim
17 words
The iontophoresis electrode of claim 20 wherein the adhesive tape layer includes a sheet of adhesive tape.
Claim 24
Dependent Claim
18 words
The iontophoresis electrode of claim 21 wherein the adhesive tape layer includes a sheet of polyvinyl chloride foam.
Claim 25
Dependent Claim
20 words
The iontophoresis electrode of claim 22 wherein the adhesive tape layer includes a layer of medical grade acrylic pressure-sensitive adhesive.
Claim 26
Dependent Claim
15 words
The iontophoresis electrode of claim 20 wherein the conductive layer includes carbon loaded silicone rubber.
Claim 27
Dependent Claim
15 words
The iontophoresis electrode of claim 20 wherein the absorbent pad layer includes polyester fiber fill.
Claim 28
Dependent Claim
16 words
The iontophoresis electrode of claim 20 wherein the dispersive layer includes a sheet of filter paper.
Claim 29
Dependent Claim
19 words
The iontophoresis electrode of claim 26 wherein the sheet of filter paper includes a sheet of absorbent low-particle polyester-cellulose.
Claim 30
Dependent Claim
21 words
The iontophoresis electrode of claim 20 wherein the electrode includes more than one site for injecting the solution into the electrode.
Claim 31
Dependent Claim
23 words
The iontophoresis electrode of claim 20 and further comprising: a removable protective layer that overlies the dispersive layer and the adhesive tape layer.
Claim 32
Dependent Claim
14 words
The iontophoresis electrode of claim 20 wherein the electrical contact includes a snap-type contact.
Claim 33
Dependent Claim
61 words
The iontophoresis electrode of claim 30 wherein the adhesive tape layer includes a second aperture and wherein the snap-type contact includes an eyelet and a stud positioned on opposite faces of the conductive layer, the eyelet extending through the second aperture in the adhesive tape layer, the stud having a post extending through the conductive layer for connection with the eyelet.
Claim 34
Dependent Claim
18 words
The iontophoresis electrode of claim 31 wherein the eyelet includes conductive material and the stud includes nonconductive material.
Claim 35
Dependent Claim
12 words
The iontophoresis electrode of claim 32 wherein the stud includes nonconductive plastic.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |