US3677268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iontophoresis electrode
Assignee: Sherwood Medical Co
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Filing: 1969-11-28
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Granted: 1972-07-18
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Expires: 1989-11-28
Abstract
Abstract A self-contained iontophoresis electrode, disposable after use on a patient, is prefilled with an inducing iontophoresis liquid completely contained within a chamber covered by a filter cover. A protective cover, impenetrable to liquids and to light energy, seals the filter cover and is removable when the electrode is to be used.
Inventors
- 👤 Richard A Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:00
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0432; A61N1/044; A61B; A61B5/00; A61B5/42; A61B5/4261; A61B5/4266
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
174 words
A prefilled, disposable iontophoresis electrode, comprising: housing means including a hollow neck portion and a partial chamber portion spaced radially surrounding said hollow neck portion; electrically conductive means extending through said hollow neck portion and into the partial chamber portion to allow external electrical connection to the partial chamber portion, said partial chamber portion and said conductive means forming a fluid impenetrable chamber with a fluid opening being the sole fluid passageway for said chamber; first cover means completely enclosing said fluid impenetrable chamber along said fluid opening to completely contain therein an iontophoresis fluid for inducing iontophoresis on the skin of a patient, said first cover means being absorbent to said iontophoresis fluid to allow iontophoresis when said first cover means is placed against the skin of the patient and electrical connection is made to said electrically conductive means; and second cover means impenetrable by said iontophoresis fluid for sealing said first cover means, including means attaching said second cover means to said housing for removal therefrom without disrupting said first cover means.
Claim 2
Dependent Claim
174 words
A prefilled, disposable iontophoresis electrode, comprising: housing means including a hollow neck portion and a partial chamber portion spaced radially surrounding said hollow neck portion; electrically conductive means extending through said hollow neck portion and into the partial chamber portion to allow external electrical connection to the partial chamber portion, said partial chamber portion and said conductive means forming a fluid impenetrable chamber with a fluid opening being the sole fluid passageway for said chamber; first cover means completely enclosing said fluid impenetrable chamber along said fluid opening to completely contain therein an iontophoresis fluid for inducing iontophoresis on the skin of a patient, said first cover means being absorbent to said iontophoresis fluid to allow iontophoresis when said first cover means is placed against the skin of the patient and electrical connection is made to said electrically conductive means; and second cover means impenetrable by said iontophoresis fluid for sealing said first cover means, including means attaching said second cover means to said housing for removal therefrom without disrupting said first cover means.
Claim 3
Dependent Claim
25 words
The electrode of claim 1 wherein said fluid is light sensitive, said second cover means comprising a material for preventing penetration of light energy therethrough.
Claim 4
Dependent Claim
27 words
The electrode of claim 1 wherein said second cover means comprises a material containing metal, said second cover means being welded to said housing around its periphery.
Claim 5
Dependent Claim
96 words
The iontophoresis electrode of claim 3 wherein said housing means includes a shoulder located on a different plane than the plane of the periphery to which said second cover means is welded, said first cover means being formed by filter paper of a thickness substantially corresponding to the distance between the plane of said shoulder and the planE of said periphery, said filter paper being seated against said shoulder, whereby the engagement of the filter paper with the shoulder is not disrupted when the weld of said second cover means to the housing means is broken.
Claim 6
Dependent Claim
59 words
The self-contained electrode of claim 9 in which said electrically insulated housing means includes an integral hollow neck portion contiguous with and spaced from the chamber portion defined by the housing means, the conductive neck of said electrically conductive means being contained within said hollow neck portion in liquid-tight sealing engagement therewith and extending into contact with the chamber.
Claim 7
Dependent Claim
65 words
The self-contained electrode of claim 5 wherein the conductive neck of said electrically conductive means has a hollow center defining a receptacle for an electrical plug, the electrical plug being inserted within said receptacle to allow external electrical connection to the fluid, and the electrical plug being removable from the receptacle in order to allow the electrode to be discarded after use on a subject.
Claim 8
Dependent Claim
19 words
The self-contained electrode of claim 6 wherein said electrically conductive means is formed of an electrically conductive plastic material.
Claim 9
Dependent Claim
40 words
The iontophoresis electrode of claim 1 wherein said second cover means includes a tab extending beyond the periphery of said housing, whereby said tab may be lifted to break the attaching means holding said second cover means to said housing.
References Cited (Backward Citations)
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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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |