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US4407300A Expired / Lapsed US ⏱️ 0.0 years remaining

Potentiometric diagnosis of cancer in vivo

Assignee: Individual
•
Filing: 1980-07-14
•
Granted: 1983-10-04
•
Expires: 2000-07-14
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Abstract

Abstract Methods for scanning and diagnosing the presence or absence of malignant cancerous tissue in areas such as mammary tissue and lymph nodes of human and animal bodies by measuring the electromotive force generated by a platinum electrode or probe in contact with skin or subcutaneous portions of a body area to be diagnosed for presence or absence of said malignant tissue, and recording as suspect areas of malignant growth at least those body areas which were in contact with the probe or electrode when a significant negative electromotive force in the order of minus two millivolts or less was measured, the electromotive force being measured across two electrodes or probes, one in contact with normal skin or tissue, and the other in contact with skin or subcutaneous portions of the body area to be diagnosed.

Inventors

  • 👤 Robert E. Davis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 20:18
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/41; A61B5/414; A61B5/415; A61B5/05; A61B5/418

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 129 words
A method for scanning and diagnosing the absence or presence and location of malignant cancerous tissue in an area of the body comprising: measuring the presence or absence of a naturally-occurring electromotive force between a first probe in contact with the skin or subcutaneous portions of a body area to be diagnosed for the presence or absence of said malignant tissue, and a second probe which is maintained in contact with an area of normal body tissue, and recording as suspect, areas of malignant growth, at least those body areas which were in contact with said first probe when an electromotive force between -2.0 and -5.0 mv was measured, wherein said naturally-occurring electromotive force arises from an asymetrical distribution of metal atoms or ions about the suspected malignant tissue.
Claim 2
Independent Claim 129 words
A method for scanning and diagnosing the absence or presence and location of malignant cancerous tissue in an area of the body comprising: measuring the presence or absence of a naturally-occurring electromotive force between a first probe in contact with the skin or subcutaneous portions of a body area to be diagnosed for the presence or absence of said malignant tissue, and a second probe which is maintained in contact with an area of normal body tissue, and recording as suspect, areas of malignant growth, at least those body areas which were in contact with said first probe when an electromotive force between -2.0 and -5.0 mv was measured, wherein said naturally-occurring electromotive force arises from an asymetrical distribution of metal atoms or ions about the suspected malignant tissue.
Claim 3
Dependent Claim 16 words
A method as claimed in claim 1, wherein the said body area comprises human mammary tissue.
Claim 4
Dependent Claim 16 words
A method as claimed in claim 1, wherein said body area comprises human lymph node tissue.

References Cited (Backward Citations)

US3834374A Cited
DE2424580A1 Cited
US4184486A Cited
US4291708A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-10-03 1987-04-04 1987-10-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-10-03 1991-04-04 1991-10-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-10-03 1995-04-04 1995-10-04 $7700.00 Window Closed / Lapsed

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