Patent US4269199A successfully refreshed from Google Patents.
US4269199A
Expired / Lapsed
US
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Inducing local hyperthermia by inductive diathermy
Assignee: Thermal Developments Inc
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Filing: 1979-03-14
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Granted: 1981-05-26
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Expires: 1999-03-14
Abstract
Abstract A method for inducing local hyperthermia in treatment of a tumor by short wave diathermy which involves moving an induction coil over the portion of the body containing the tumor such that the axis of the coil constantly transects different portions of the tumor.
Inventors
- 👤 David Armitage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:47
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/40; A61N1/403; A61N5/00; A61N5/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A method for inducing local hyperthermia in treating a tumor with short-wave diathermy which comprises positioning an induction coil with the axis thereof transecting a portion of the body containing the tumor while electrically energizing said coil at a radio frequency, and rapidly moving said coil relative to said body through a repetitive path in a direction approximately normal to said axis of said coil such that said axis of said coil constantly transects different portions of said tumor and the normal tissue adjacent said tumor.
Claim 2
Independent Claim
86 words
A method for inducing local hyperthermia in treating a tumor with short-wave diathermy which comprises positioning an induction coil with the axis thereof transecting a portion of the body containing the tumor while electrically energizing said coil at a radio frequency, and rapidly moving said coil relative to said body through a repetitive path in a direction approximately normal to said axis of said coil such that said axis of said coil constantly transects different portions of said tumor and the normal tissue adjacent said tumor.
Claim 3
Dependent Claim
14 words
The method according to claim 1 in which said path is a closed loop.
Claim 4
Dependent Claim
12 words
The method according to claim 2 in which said path is circular.
Claim 5
Dependent Claim
12 words
The method according to claim 2 in which said path is reciprocating.
Claim 6
Independent Claim
30 words
The method according to any of claims 1, 2, and 3 in which said coil is a pancake coil and the movement of said coil is coplanar with said coil.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |