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USRE32057E Expired / Lapsed US ⏱️ 0.0 years remaining

Radio frequency treatment of tumors while inducing hypotension

Assignee: Harry H. Leveen
•
Filing: 1982-06-30
•
Granted: 1985-12-31
•
Expires: 2002-06-30
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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 2026-10-24 16:57
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/06; A61N1/40; A61N1/403

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 13 words
The method according to claim 1 in which said hypotension is induced by
Claim 2
Dependent Claim 34 words
use of drugs. 3. 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
Claim 3
Dependent Claim 33 words
agents. 4. 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
Claim 4
Dependent Claim 95 words
phentolamine. .Iadd.5. A method of treating a naturally occurring tumor in a human comprising: placing a portion of the body of the human in which the tumor is located in a radio frequency electromagnetic field ranging in frequency from 100 kilohertz to less than 1000 megahertz, heating 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,
Claim 5
Dependent Claim 101 words
while inducing hypotension in said body portion..Iaddend. .Iadd.6. A method of treating a naturally occurring tumor in a human comprising: placing a portion of the body of the human in which the tumor is located in a radio frequency electromagnetic field ranging in frequency from 100 kilohertz to 200 megahertz, heating 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, while inducing
Claim 6
Dependent Claim 177 words
hypotension in said body portion..Iaddend. .Iadd.7. A method of treating a naturally occurring tumor in a human which comprises placing a portion of the body of the human in which the tumor is located in a radio frequency electromagnetic field ranging from 100 kilohertz to 200 megahertz, heating the tumor tissue and adjacent normal 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 heat said tumor tissue at least 6° C. above the temperature of the adjacent normal tissue to cause necrosis of said tumor tissue, but insufficient to heat said adjacent normal tissue above 40° C. to cause significant damage to the adjacent normal tissue, while inducing hypotension in said body portion..Iaddend. .Iadd.8. The method according to claim 7 wherein said tumor tissue is heated in a range of 6° C. to 10° C. above the temperature of the adjacent normal tissue..Iaddend. .Iadd.9. The method according to claim 7 wherein said radio frequency electromagnetic field is 13.56 megahertz..Iaddend.

References Cited (Backward Citations)

GB353231A Cited
US2223447A Cited
US2407690A Cited
GB618179A Cited
US3181535A Cited
US3245408A Cited
DE1284528B Cited
DE2356183A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-12-30 1989-07-01 1989-12-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-12-30 1993-07-01 1993-12-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-12-30 1997-07-01 1997-12-31 $7700.00 Window Closed / Lapsed

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