US5289822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for reducing the surface resistivity of skin and method
Assignee: Hospira Sedation Inc
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Filing: 1992-12-01
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Granted: 1994-03-01
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Expires: 2012-12-01
Abstract
Abstract Electrode adapted to be placed in contact with the skin of a patient for reducing the surface resistivity of the skin of the patient and comprising a member formed of a dry-conductive material and having an outer surface adapted to be placed in contact with the skin of the patient. A composition is disposed on at least a portion of the surface of the member. The composition as is the surface of a plurality of water-containing vesicles.
Inventors
- 👤 Albert J. Highe
- 👤 Mir A. Imran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:14
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/251; A61B5/257; A61B5/259; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
74 words
An electrode adapted to be placed in contact with the skin of a patient for reducing the surface resistivity of the skin of the patient, the electrode comprising a member formed of a dry-conductive material and having an outer surface adapted to be placed in contact with the skin of the patient, a composition disposed in at least a portion of the surface of the member, said composition including a plurality of water-containing vesicles.
Claim 2
Dependent Claim
74 words
An electrode adapted to be placed in contact with the skin of a patient for reducing the surface resistivity of the skin of the patient, the electrode comprising a member formed of a dry-conductive material and having an outer surface adapted to be placed in contact with the skin of the patient, a composition disposed in at least a portion of the surface of the member, said composition including a plurality of water-containing vesicles.
Claim 3
Dependent Claim
22 words
An electrode as in claim 1 wherein the water-containing vesicles are coated on a portion of the outer surface of the electrode.
Claim 4
Dependent Claim
20 words
An electrode as in claim 1 wherein said water-containing vesicles are intermixed in the dry conductive material of the member.
Claim 5
Dependent Claim
18 words
An electrode as in claim 1 wherein said vesicles are in the form of a crosslinked hydrophilic-type polymer.
Claim 6
Dependent Claim
26 words
An electrode as in claim 4 wherein when said vesicles are swollen, the swollen vesicles contain less than 20% by weight of the crosslinked hydrophilic-type polymer.
Claim 7
Dependent Claim
32 words
An electrode as in claim 4 wherein the crosslinked polymer has a crosslink density that permits the polymer to swell a maximum of 5-50 times its weight when exposed to pure water.
Claim 8
Dependent Claim
12 words
An electrode as in claim 1 wherein said vesicles contain a humectant.
Claim 9
Dependent Claim
11 words
An electrode as in claim 7 wherein said humectant is glycerin.
Claim 10
Dependent Claim
12 words
An electrode as in claim 8 wherein the vesicles contain a salt.
Claim 11
Dependent Claim
17 words
An electrode as in claim 9 wherein said salt is selected from potassium chloride and sodium chloride.
Claim 12
Dependent Claim
13 words
An electrode as in claim 7 wherein said humectant is a deliquescent salt.
Claim 13
Dependent Claim
13 words
An electrode as in claim 11 wherein said deliquescent salt is potassium acetate.
Claim 14
Dependent Claim
16 words
An electrode as in claim 1 wherein the vesicles have a crosslinking density ranging from 0.5%-12%.
Claim 15
Dependent Claim
12 words
An electrode as in claim 1 wherein said vesicles incorporate a tackifier.
Claim 16
Dependent Claim
17 words
An electrode as in claim 14 wherein said tackifier is in the form of a water-soluble polymer.
Claim 17
Dependent Claim
17 words
An electrode as in claim 15 wherein said water-soluble polymer is provided with a reactive functional group.
Claim 18
Dependent Claim
12 words
An electrode as in claim 1 wherein said vesicles form a paste.
Claim 19
Dependent Claim
70 words
In a composition for the treatment of an electrode adapted to be placed in contact with the skin of the patient for reducing the surface resistivity of the skin of the patient, a plurality of beads formed of a crosslinked hydrophilic polymer, said beads having absorbed therein a mixture increasing the size of the beads from 5-50 times its original size, the mixture being comprised of a humectant and water.
Claim 20
Dependent Claim
70 words
In a composition for the treatment of an electrode adapted to be placed in contact with the skin of the patient for reducing the surface resistivity of the skin of the patient, a plurality of beads formed of a crosslinked hydrophilic polymer, said beads having absorbed therein a mixture increasing the size of the beads from 5-50 times its original size, the mixture being comprised of a humectant and water.
Claim 21
Dependent Claim
11 words
A composition as in claim 18 wherein said humectant is glycerin.
Claim 22
Dependent Claim
12 words
A composition as in claim 19 wherein said composition includes a salt.
Claim 23
Dependent Claim
13 words
A composition as in claim 18 wherein said humectant is a deliquescent salt.
Claim 24
Dependent Claim
12 words
A composition as in claim 18 wherein said mixture includes a tackifier.
Claim 25
Dependent Claim
13 words
A composition as in claim 22 wherein said tackifier is a water-soluble polymer.
Claim 26
Dependent Claim
14 words
A composition as in claim 18 which said mixture has a consistency of paste.
Claim 27
Dependent Claim
63 words
In a method for providing a composition for the treatment of an electrode for reducing surface resistivity, providing a batch of crosslinked hydrophilic polymer-type beads having a size less than 90 microns, adding to the beads a mixture of a humectant and water, permitting the beads to absorb the mixture and expand in size to provide a composition having a consistency of paste.
Claim 28
Dependent Claim
63 words
In a method for providing a composition for the treatment of an electrode for reducing surface resistivity, providing a batch of crosslinked hydrophilic polymer-type beads having a size less than 90 microns, adding to the beads a mixture of a humectant and water, permitting the beads to absorb the mixture and expand in size to provide a composition having a consistency of paste.
Claim 29
Dependent Claim
23 words
A method as in claim 25 together with the step of adding glycerin as a humectant and adding a salt to the mixture.
Claim 30
Dependent Claim
21 words
A method as in claim 25 together with the step of adding a deliquescent salt as a humectant to the mixture.
Claim 31
Dependent Claim
17 words
A method as in claim 25 together with the step of adding a tackifier to the mixture.
References Cited (Backward Citations)
US4274420A
Cited
US4658826A
Cited
US4406827A
Cited
US4524087A
Cited
US4367745A
Cited
CA1219642A
Cited
US4674512A
Cited
US5205297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-28 | 1997-08-30 | 1998-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-28 | 2001-08-30 | 2002-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-28 | 2005-08-30 | 2006-03-01 | $7700.00 | Window Closed / Lapsed |