US5087242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydratable bioelectrode
Assignee: Iomed LLC
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Filing: 1989-07-21
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Granted: 1992-02-11
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Expires: 2009-07-21
Abstract
Abstract A hydratable iontophoretic bioelectrode includes a layer of material for absorbing and holding an ionized fluid when placed in contact with the fluid. A conductive sheet of material is positioned in contact with one side of the layer of material and is connectable to an electrical charged source to receive a charge of the same polarity as the polarity of ions in the fluid. A support base holds the layer of material and conductive sheets in place to enable placement of the layer of material against the skin or tissue of a person into which ions from the ionized fluid are to be delivered. This is carried out by applying the charge in question to the conductive sheet to cause the ions in the layer of material to migrate therefrom into the person's skin or tissue.
Inventors
- 👤 Tomasz J. Petelenz
- 👤 Stephen C. Jacobsen
- 👤 Robert L. Stephen
- 👤 Jon Beck
- 👤 Jin Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0432; A61N1/0436
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
A hydratable bioelectrode for delivering ions of an ionized fluid into a person's skin or tissue comprising a layer of material for absorbing and holding the ionized fluid when placed in contact therewith, a conductive sheet disposed in close proximity to the layer of material for receiving an electrical charge of the same polarity as the polarity of ions in the fluid to thereby cause such ions form the layer of material away from the conductive sheet, and support means for holding the conductive sheet in close proximity to the layer of material, wherein said layer of material is comprised of a support matrix impregnated with the hydratable polymer, said support matrix comprising a nylon mesh.
Claim 2
Dependent Claim
116 words
A hydratable bioelectrode for delivering ions of an ionized fluid into a person's skin or tissue comprising a layer of material for absorbing and holding the ionized fluid when placed in contact therewith, a conductive sheet disposed in close proximity to the layer of material for receiving an electrical charge of the same polarity as the polarity of ions in the fluid to thereby cause such ions form the layer of material away from the conductive sheet, and support means for holding the conductive sheet in close proximity to the layer of material, wherein said layer of material is comprised of a support matrix impregnated with the hydratable polymer, said support matrix comprising a nylon mesh.
Claim 3
Dependent Claim
13 words
A bioelectrode as in claim 1 wherein said polymer and matrix is granulated.
Claim 4
Dependent Claim
13 words
A bioelectrode as in claim 1 wherein said polymer and matrix is fibrous.
Claim 5
Dependent Claim
169 words
A hydratable bioelectrode for delivering ions of an ionized fluid into a person's skin or tissue comprising a layer of material for absorbing and holding the ionized fluid when placed in contact therewith, two coextensive sheets of material, at least one of the sheets comprising a conductive sheet, whose edges are formed together to define a cavity between the two sheets, at least one of said coextensive sheets being made of a hydrophilic material and at least one of the coextensive sheets being disposed in close proximity to the layer of material and at least one of the coextensive sheets being adapted for receiving an electrical charge of the same polarity as the polarity of ion sin the fluid to thereby cause such ions from the layer of material to move away from the conductive sheet, and support means for holding the conductive sheet in close proximity to the layer of material, wherein said layer of material is comprised of a support matrix impregnated with a granulated hydratable polymer.
Claim 6
Dependent Claim
169 words
A hydratable bioelectrode for delivering ions of an ionized fluid into a person's skin or tissue comprising a layer of material for absorbing and holding the ionized fluid when placed in contact therewith, two coextensive sheets of material, at least one of the sheets comprising a conductive sheet, whose edges are formed together to define a cavity between the two sheets, at least one of said coextensive sheets being made of a hydrophilic material and at least one of the coextensive sheets being disposed in close proximity to the layer of material and at least one of the coextensive sheets being adapted for receiving an electrical charge of the same polarity as the polarity of ion sin the fluid to thereby cause such ions from the layer of material to move away from the conductive sheet, and support means for holding the conductive sheet in close proximity to the layer of material, wherein said layer of material is comprised of a support matrix impregnated with a granulated hydratable polymer.
Claim 7
Dependent Claim
167 words
A hydratable bioelectrode for delivering ions of an ionized fluid into a person's skin or tissue comprising a layer of material for absorbing and holding the ionized fluid when placed in contact therewith, two coextensive sheets of material, at least one of the sheets comprising a conductive sheet, whose edges are formed together to define a cavity between the two sheets, at least one of said coextensive sheets being made of a hydrophilic material and at least one of the coextensive sheets being disposed in close proximity to the layer of material and at least one of the coextensive sheets being adapted for receiving an electrical charge of the same polarity as the polarity of ions in the fluid to thereby cause such ions from the layer of material away from the conductive sheet, and support means for holding the conductive sheet in close proximity to the layer of material, wherein said layer of material is comprised of a support matrix impregnated with a fibrous hydratable polymer.
Claim 8
Dependent Claim
167 words
A hydratable bioelectrode for delivering ions of an ionized fluid into a person's skin or tissue comprising a layer of material for absorbing and holding the ionized fluid when placed in contact therewith, two coextensive sheets of material, at least one of the sheets comprising a conductive sheet, whose edges are formed together to define a cavity between the two sheets, at least one of said coextensive sheets being made of a hydrophilic material and at least one of the coextensive sheets being disposed in close proximity to the layer of material and at least one of the coextensive sheets being adapted for receiving an electrical charge of the same polarity as the polarity of ions in the fluid to thereby cause such ions from the layer of material away from the conductive sheet, and support means for holding the conductive sheet in close proximity to the layer of material, wherein said layer of material is comprised of a support matrix impregnated with a fibrous hydratable polymer.
Claim 9
Dependent Claim
22 words
A bioelectrode as in claim 4 or 5 wherein said polymer is selected from the group consisting of polyacrylamide, polyacrylate, and cellulose.
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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 |