US4019510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Therapeutic method of using low intensity direct current generator with polarity reversal
Assignee: MDT Corp
•
Filing: 1975-02-10
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Granted: 1977-04-26
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Expires: 1995-02-10
Abstract
Abstract A method for treating skin ulcers, infections and the like by eletrotherapy. Therapeutic low intensity direct current is applied to a patient by electrodes, at least one of which contains silver. The polarity of the direct current is reversed from time to time to prevent the accumulation of unwanted material upon the silver bearing electrode due to electrochemical action.
Inventors
- 👤 Franklin Hammond Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:23
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/20; A61N1/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A method of therapeutic healing skin lesions, ulcers, and the like, comprising the steps of: maintaining electrodes at least one of which is silver bearing in proximity to said skin lesions, ulcers, and the like; applying a first current flow of positive polarity having a first magnitude in the order of 4 microamps through said electrodes for a first period of time in the order of 50 minutes; applying a second current flow of negative polarity and having a second magnitude in the order of 250 microamps for a second period of time in the order of 5 minutes through said electrodes, and alternately repeating said applying steps for the duration of the therapy.
Claim 2
Independent Claim
114 words
A method of therapeutic healing skin lesions, ulcers, and the like, comprising the steps of: maintaining electrodes at least one of which is silver bearing in proximity to said skin lesions, ulcers, and the like; applying a first current flow of positive polarity having a first magnitude in the order of 4 microamps through said electrodes for a first period of time in the order of 50 minutes; applying a second current flow of negative polarity and having a second magnitude in the order of 250 microamps for a second period of time in the order of 5 minutes through said electrodes, and alternately repeating said applying steps for the duration of the therapy.
Claim 3
Independent Claim
94 words
A method of theropeutic healing skin lesions, ulcers, and the like, comprising the steps of: maintaining electrodes at least one of which is silver bearing in proximity to said skin lesions, ulcers, and the like; applying a current flow of positive polarity having a magnitude in the order of 250 microamps through said electrodes for a first time period in the order of 5 minutes; abstaining from applying current for a second time period in the order of 55 minutes; and alternately repeating said applying and abstaining steps for the duration of the therapy.
Claim 4
Independent Claim
94 words
A method of theropeutic healing skin lesions, ulcers, and the like, comprising the steps of: maintaining electrodes at least one of which is silver bearing in proximity to said skin lesions, ulcers, and the like; applying a current flow of positive polarity having a magnitude in the order of 250 microamps through said electrodes for a first time period in the order of 5 minutes; abstaining from applying current for a second time period in the order of 55 minutes; and alternately repeating said applying and abstaining steps for the duration of the therapy.
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) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |