US4119102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency treatment of tumors while inducing hypotension
Assignee: Individual
•
Filing: 1976-11-11
•
Granted: 1978-10-10
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Expires: 1996-11-11
Abstract
Abstract The method of treating tumors by radio frequency heating at the location of the tumor to cause necrosis of the tumor tissue in which hypotension is induced during the treatment.
Inventors
- 👤 Harry H. Leveen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/06; A61N1/40; A61N1/403
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
In the method of treating a naturally occurring tumor in a human by placing the portion of the body of the human in which the tumor is located in a radio frequency electromagnetic field thereby to heat the tumor tissue in said portion of said body by absorption of energy from said radio frequency electromagnetic field for a period of time and with intensity sufficient to cause necrosis of said tumor, but insufficient to cause significant damage to the adjacent normal tissue in said field, the improvement which comprises inducing hypotension in said human while treating said tumor with said radio frequency electromagnetic field.
Claim 2
Dependent Claim
104 words
In the method of treating a naturally occurring tumor in a human by placing the portion of the body of the human in which the tumor is located in a radio frequency electromagnetic field thereby to heat the tumor tissue in said portion of said body by absorption of energy from said radio frequency electromagnetic field for a period of time and with intensity sufficient to cause necrosis of said tumor, but insufficient to cause significant damage to the adjacent normal tissue in said field, the improvement which comprises inducing hypotension in said human while treating said tumor with said radio frequency electromagnetic field.
Claim 3
Dependent Claim
16 words
The method according to claim 1 in which said hypotension is induced by use of drugs.
Claim 4
Dependent Claim
31 words
The method according to claim 1 in which said hypotension is induced by the use of a drug selected from the group consisting of vasodilators, vasodepressors, anti-hypertensive agents and alpha-blocking agents.
Claim 5
Dependent Claim
32 words
The method according to claim 1 in which said hypotension is induced by the use of a drug selected from the group consisting of trimethaphan camsylate, erythrityl tetranitrate, amyl nitrate and phentolamine.
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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) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |