US3783880A
Expired / Lapsed
US
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Method for aiding formation of bone forming material
Assignee: Individual
•
Filing: 1973-05-01
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Granted: 1974-01-08
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Expires: 1993-05-01
Abstract
Abstract Method for aiding formation of bone forming material in the region of a bone structure of a living being. Two electrodes are applied to spaced areas on opposite sides of the region of the bone structure. An alternating electric potential difference is applied across the electrodes. This potential difference has a frequency below 100 c/s and a magnitude such that it produces a current density of at most 10 Mu A/mm2 at the electrode surfaces in physical contact with the areas.
Inventors
- 👤 W Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61B; A61B17/00; A61B17/56; A61B17/58; A61N1/378; A61N1/40; A61N2/00; A61N2/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
94 words
A method for aiding formation of bone forming material in the region of a bone structure of a living being, the method comprising the steps of: a. positioning at least two electrodes into physical contact with spaced areas on opposite sides of the region of the bone structure; b. applying an induced alternating electric potential difference across the electrodes, the potential difference having a frequency below 100 c/s and a magnitude such that it produces, at the electrode surfaces in physical contact with the areas a current density of at most 10 Mu A/mm2.
Claim 2
Independent Claim
94 words
A method for aiding formation of bone forming material in the region of a bone structure of a living being, the method comprising the steps of: a. positioning at least two electrodes into physical contact with spaced areas on opposite sides of the region of the bone structure; b. applying an induced alternating electric potential difference across the electrodes, the potential difference having a frequency below 100 c/s and a magnitude such that it produces, at the electrode surfaces in physical contact with the areas a current density of at most 10 Mu A/mm2.
Claim 3
Dependent Claim
33 words
A method as defined in claim 1 further comprising the step of producing, in the region, an alternating magnetic field having a direction substantially parallel to the collagene fibers of the bone structure.
Claim 4
Dependent Claim
20 words
The method as defined in claim 1 wherein alternations are used which are unsymmetrically in respect to a zero value.
Claim 5
Dependent Claim
24 words
The method as defined in claim 1 wherein the alternating electrical potential difference has a wave form with a harmonics content below 20 percent.
Claim 6
Dependent Claim
18 words
The method as defined in claim 1 wherein the alternating electric potential difference has a triangular wave form.
Claim 7
Dependent Claim
23 words
The method as defined in claim 1 wherein the alternating electric potential difference has a wave form consisting of pulses of alternating polarity.
Claim 8
Dependent Claim
17 words
The method as defined in claim 1 wherein the alternations have a wave form with gradual slopes.
Claim 9
Dependent Claim
37 words
The method as defined in claim 1 wherein the potential difference has a magnitude to produce a current density between 3 and 7 Mu A/mm2 at the electrode surfaces in physical contact with the body substance areas.
Claim 10
Dependent Claim
18 words
The method as defined in claim 1 wherein the alternations have a frequency between 1 and 65 c/s.
Claim 11
Dependent Claim
18 words
The method as defined in claim 1 wherein the alternations have a frequency between 10 and 30 c/s.
Claim 12
Dependent Claim
15 words
The method as defined in claim 1 wherein the living being is a human being.
Claim 13
Dependent Claim
35 words
The method as defined in claim 1 wherein the spaced areas, at which the electrodes are applied, are disposed within the skin and are formed by internal body substance including soft tissue and bone substance.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |