US4612940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave dipole probe for in vivo localized hyperthermia
Assignee: SCD Inc 2400 COMPUTER DRIVE WESTBOROUGH MA 01581 A MA CORP
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Filing: 1984-05-09
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Granted: 1986-09-23
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Expires: 2004-05-09
Abstract
Abstract A microwave dipole probe for in vivo localized hyperthermia includes an outer conductor and an inner conductor extending through and beyond the outer conductor. The portion of the inner conductor extending beyond the outer conductor is expanded in diameter relative to the portion within the outer conductor. A dielectrically loaded phase reversal sleeve is folded over the outside of the outer conductor and contains a dielectric loading material similar to the dielectric constant of the in vivo target volume.
Inventors
- 👤 Raymond S. Kasevich
- 👤 Arthur S. Dwyer
- 👤 Bart G. Guerreri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:06
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/1815; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
82 words
A microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyound said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; and a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume.
Claim 2
Dependent Claim
82 words
A microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyound said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; and a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume.
Claim 3
Dependent Claim
22 words
The microwave dipole probe of claim 1 in which said expanded inner conductor is approximately equal in length to said outer conductor.
Claim 4
Dependent Claim
25 words
The microwave dipole probe of claim 1 in which said dielectric loading material has a conductivity similar to that of the in vivo target volume.
Claim 5
Dependent Claim
18 words
The microwave dipole probe of claim 1 in which said dielectric loading material is a polyester resin composition.
Claim 6
Dependent Claim
33 words
The microwave dipole probe of claim 1 in which said probe length is approximately one half wavelength at the operation frequency and several wavelengths long when undergoing longitudinal beam steering at higher frequency.
Claim 7
Dependent Claim
31 words
The microwave dipole probe of claim 1 further including a re-entrant microwave cavity means responsive to said inner conductor for controlling the heating pattern in response to variations in excitation frequency.
Claim 8
Dependent Claim
18 words
The microwave dipole probe of claim 6 in which said re-entrant microwave cavity means includes dielectric loading material.
Claim 9
Dependent Claim
20 words
The microwave dipole probe of claim 1 further including a fiber optic bundle disposed between said inner and outer conductors.
Claim 10
Dependent Claim
47 words
The microwave dipole probe of claim 8 in which said fiber optic bundle terminates proximate the end of said outer conductor and there are means for transmitting and receiving radiation laterally of said probe between the surrounding target volume and the terminus of said fiber optic bundle.
Claim 11
Dependent Claim
22 words
The microwave dipole probe of claim 9 in which said means for transmitting and receiving includes the polished ends of the fiber.
Claim 12
Dependent Claim
19 words
The microwave dipole probe of claim 9 in which said means for transmitting and receiving includes a reflecting surface.
Claim 13
Dependent Claim
31 words
The microwave dipole probe of claim 11 in which said inner conductor is interconnected with said expanded inner conductor by a transition section and said transition section includes said reflecting surface.
Claim 14
Dependent Claim
42 words
The microwave dipole prove of claim 8 in which said fiber optic bundle includes at least one optical fiber means for tramsmitting radiation to the said target volume and at least pne optical fiber means for receiving radiation from said target volume.
Claim 15
Dependent Claim
32 words
The microwave dipole probe of claim 8 in which at least some of the fiber optic elements in said fiber optic bundle extend through said reflecting surface into the expanded inner conductor.
Claim 16
Dependent Claim
35 words
The microwave dipole probe of claim 8 in which at least one of the optical fibers in said fiber optic bundle includes at its terminus a heat-sensitive optical load whose reflection coefficient changes with temperature.
Claim 17
Dependent Claim
25 words
The microwave dipole probe of claim 8 in which said outer conductor is a metallic coating on the external surface of said fiber optic bundle.
Claim 18
Dependent Claim
23 words
The microwave dipole probe of claim 1 in which said inner conductor is interconnected with said expanded inner conductor by a transition section.
Claim 19
Dependent Claim
23 words
The microwave dipole probe of claim 1 in which the gap between said outer conductor and said expanded inner conductor is dielectrically loaded.
Claim 20
Dependent Claim
16 words
The microwave dipole of claim 1 in which said probe is covered with a dielectric material.
Claim 21
Dependent Claim
104 words
A microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume; and a re-entrant microwave cavity means responsive to said inner conductor for controlling the heating pattern in response to variations in excitation frequency.
Claim 22
Dependent Claim
104 words
A microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume; and a re-entrant microwave cavity means responsive to said inner conductor for controlling the heating pattern in response to variations in excitation frequency.
Claim 23
Dependent Claim
95 words
A fiber optic microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume; and a fiber optic bundle disposed between said inner and outer conductors.
Claim 24
Dependent Claim
95 words
A fiber optic microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume; and a fiber optic bundle disposed between said inner and outer conductors.
Claim 25
Dependent Claim
117 words
A fiber optic microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume; a re-entrant microwave cavity means responsive to said inner conductor for controlling the heating pattern in response to variations in excitation frequency; and a fiber optic bundle disposed between said inner and outer conductors.
Claim 26
Dependent Claim
117 words
A fiber optic microwave dipole probe for localized hyperthermia of an in vivo target volume, comprising: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume; a re-entrant microwave cavity means responsive to said inner conductor for controlling the heating pattern in response to variations in excitation frequency; and a fiber optic bundle disposed between said inner and outer conductors.
Claim 27
Dependent Claim
93 words
A multiprobe phased array including a number of space microwave dipole probes for localized hyperthermia of an in vivo target volume, each of which comprises: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; and a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume.
Claim 28
Dependent Claim
93 words
A multiprobe phased array including a number of space microwave dipole probes for localized hyperthermia of an in vivo target volume, each of which comprises: an outer conductor; an inner conductor extending through and beyond said outer conductor, the portion of said inner conductor extending beyond said outer conductor being expanded in diameter relative to the portion within said outer conductor; and a dielectrically loaded phase reversal sleeve folded over the outside of said outer conductor and containing a dielectric loading material similar to the dielectric constant of the in vivo target volume.
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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) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |