US5545137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for asymmetrical thermal therapy with helical dipole microwave antenna
Assignee: Auslo Research LLC
•
Filing: 1995-03-30
•
Granted: 1996-08-13
•
Expires: 2015-03-30
Abstract
Abstract An intraurethral, Foley-type catheter shaft contains a microwave antenna capable of generating a cylindrically symmetrical thermal pattern, within which temperatures are capable of exceeding 45° C. The antenna, which is positioned within the shaft, is surrounded by means within the shaft for absorbing thermal energy conducted by the tissue and asymmetrically absorbing electromagnetic energy emitted by the antenna--a greater amount of electromagnetic energy being absorbed on one side of the shaft. This asymmetrical absorption alters the thermal pattern generated by the microwave antenna, making it cylindrically asymmetrical, which effectively focuses microwave thermal therapy toward undesirous benign tumorous tissue growth of a prostate anterior and lateral to the urethra, and away from healthy tissue posterior to the urethra.
Inventors
- 👤 Eric N. Rudie
- 👤 Bruce H. Neilson
- 👤 James V. Kauphusman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:20
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/1815; A61N; A61N5/00; A61N5/02; A61N5/04; A61N5/045; A61B17/00; A61B17/00234; A61B2017/00238; A61B2017/00274; A61B2018/00315; A61B2018/00547; A61M; A61M25/00; A61M25/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
126 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; and a pair of second lumens and a pair of third lumens, the pair of second lumens and the pair of third lumens being configured to at least partially surround the first lumen, wherein the pair of second lumens has a transverse cross-sectional area which is less than that of the pair of third lumens, the pair of second lumens being unobstructed to permit the free passage of fluids therethrough.
Claim 2
Dependent Claim
126 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; and a pair of second lumens and a pair of third lumens, the pair of second lumens and the pair of third lumens being configured to at least partially surround the first lumen, wherein the pair of second lumens has a transverse cross-sectional area which is less than that of the pair of third lumens, the pair of second lumens being unobstructed to permit the free passage of fluids therethrough.
Claim 3
Dependent Claim
125 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; a second lumen and a third lumen, the second lumen and the third lumen being configured to at least partially surround the first lumen, wherein the second lumen has a transverse cross-sectional area which is less than that of the third lumen; a fourth lumen positioned between the first outer surface and the second lumen; and a fifth lumen positioned between the second outer surface and the third lumen.
Claim 4
Dependent Claim
125 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; a second lumen and a third lumen, the second lumen and the third lumen being configured to at least partially surround the first lumen, wherein the second lumen has a transverse cross-sectional area which is less than that of the third lumen; a fourth lumen positioned between the first outer surface and the second lumen; and a fifth lumen positioned between the second outer surface and the third lumen.
Claim 5
Dependent Claim
20 words
The catheter of claim 2 and further comprising: a sixth lumen positioned between the first lumen and the third lumen.
Claim 6
Dependent Claim
18 words
The catheter of claim 3 wherein the sixth lumen is exposed at the second end of the shaft.
Claim 7
Dependent Claim
47 words
The catheter of claim 2 and further comprising: an inflatable balloon positioned near the second end, the balloon enveloping the first and second outer surfaces of the shaft and having opposing ends sealingly connected thereto, an interior of the balloon being in communication with the fifth lumen.
Claim 8
Dependent Claim
116 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end, and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; and a second lumen and a third lumen, the second lumen and the third lumen being configured to at least partially surround the first lumen, wherein the second lumen has a transverse cross-sectional area which is less than that of the third lumen and wherein the second lumen communicates with the third lumen near the second end of the shaft.
Claim 9
Dependent Claim
116 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end, and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; and a second lumen and a third lumen, the second lumen and the third lumen being configured to at least partially surround the first lumen, wherein the second lumen has a transverse cross-sectional area which is less than that of the third lumen and wherein the second lumen communicates with the third lumen near the second end of the shaft.
Claim 10
Dependent Claim
111 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; and a second lumen and a third lumen, the second lumen and the third lumen being configured to at least partially surround the first lumen, wherein the second lumen has a transverse cross-sectional area which is less than that of the third lumen; and a heating device positioned within the first lumen of the shaft.
Claim 11
Dependent Claim
111 words
A catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end including: a first lumen which is oriented nearer the first outer surface than the second outer surface; and a second lumen and a third lumen, the second lumen and the third lumen being configured to at least partially surround the first lumen, wherein the second lumen has a transverse cross-sectional area which is less than that of the third lumen; and a heating device positioned within the first lumen of the shaft.
Claim 12
Dependent Claim
146 words
An intraurethral catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, and a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end of the shaft including: an antenna lumen having a generally circular transverse cross-section and being positioned nearer the first outer surface than the second outer surface; a first pair and a second pair of cooling lumens substantially surrounding the antenna lumen wherein the cooling lumens have a generally arc shaped transverse cross-section and are configured so that an inner wall of the cooling lumens are adjacent to the antenna lumen about a substantial majority of the antenna lumen; and a urinary drainage lumen positioned between the second pair of cooling lumens and the antenna lumen, the urinary drainage lumen having a generally arc-shaped transverse cross-section.
Claim 13
Dependent Claim
146 words
An intraurethral catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, and a second outer surface, the shaft further comprising: a plurality of lumens which extend between the first end and the second end of the shaft including: an antenna lumen having a generally circular transverse cross-section and being positioned nearer the first outer surface than the second outer surface; a first pair and a second pair of cooling lumens substantially surrounding the antenna lumen wherein the cooling lumens have a generally arc shaped transverse cross-section and are configured so that an inner wall of the cooling lumens are adjacent to the antenna lumen about a substantial majority of the antenna lumen; and a urinary drainage lumen positioned between the second pair of cooling lumens and the antenna lumen, the urinary drainage lumen having a generally arc-shaped transverse cross-section.
Claim 14
Dependent Claim
51 words
The catheter of claim 8 and further comprising: a temperature sensing lumen positioned between the first outer surface and the antenna lumen and having a generally circular-shaped transverse cross-section; and an inflation lumen positioned between the second outer surface and the urinary drainage lumen and having a generally circular-shaped transverse cross-section.
Claim 15
Dependent Claim
35 words
The catheter of claim 9 wherein the antenna lumen has transverse cross-sectional area substantially greater than the transverse cross-sectional area of each of the urinary drainage lumen, the temperature sensing lumen, and the inflation lumen.
Claim 16
Dependent Claim
33 words
The catheter of claim 9 wherein the antenna lumen has a diameter at least about twice the diameter of each of the urinary drainage lumen, the temperature sensing lumen, and the inflation lumen.
Claim 17
Dependent Claim
24 words
The catheter of claim 9, and further comprising a thermosensing device, the thermosensing device being positioned within the temperature sensing lumen of the shaft.
Claim 18
Dependent Claim
19 words
The catheter of claim 8 wherein the urinary drainage lumen is exposed at the second end of the shaft.
Claim 19
Dependent Claim
27 words
The catheter of claim 8 wherein the first pair of cooling lumens communicate with the second pair of cooling lumens near the second end of the shaft.
Claim 20
Dependent Claim
23 words
The catheter of claim 8, and further comprising a heating device, the heating device being positioned within the antenna lumen of the shaft.
Claim 21
Dependent Claim
14 words
The catheter of claim 8 wherein the catheter shaft has a generally elliptical cross-section.
Claim 22
Dependent Claim
253 words
An intraurethral catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, and a second outer surface, and having a generally elliptically shaped transverse cross section, the shaft further comprising: a plurality of lumens which extend between the first end and the second end of the shaft including: an antenna lumen having a generally circular shaped transverse cross-section and being positioned nearer the first outer surface than the second outer surface; a first pair and a second pair of cooling lumens substantially surrounding the antenna lumen wherein the cooling lumens have a generally arc shaped transverse cross-section and are configured so that an inner wall of the cooling lumens are adjacent to the antenna lumen about a substantial majority of the antenna lumen; and a urinary drainage lumen positioned between the second pair of cooling lumens and the antenna lumen, having a generally arc-shaped transverse cross-section; a temperature sensing lumen positioned between the antenna lumen and the first outer surface of the catheter shaft; and an inflation lumen positioned between the urinary drainage lumen and the second outer surface, wherein the temperature sensing lumen, the antenna lumen, urinary drainage lumen and the inflation lumen each have a center of their respective transverse cross-sections aligned along a major axis of the generally elliptical shaped transverse cross-section of the catheter shaft and the first and second pair of cooling lumens are positioned symmetrically relative to the major axis of the generally elliptical shaped transverse cross-section of the catheter shaft.
Claim 23
Dependent Claim
253 words
An intraurethral catheter comprising: an elongate shaft having a first end, a second end, a first outer surface, and a second outer surface, and having a generally elliptically shaped transverse cross section, the shaft further comprising: a plurality of lumens which extend between the first end and the second end of the shaft including: an antenna lumen having a generally circular shaped transverse cross-section and being positioned nearer the first outer surface than the second outer surface; a first pair and a second pair of cooling lumens substantially surrounding the antenna lumen wherein the cooling lumens have a generally arc shaped transverse cross-section and are configured so that an inner wall of the cooling lumens are adjacent to the antenna lumen about a substantial majority of the antenna lumen; and a urinary drainage lumen positioned between the second pair of cooling lumens and the antenna lumen, having a generally arc-shaped transverse cross-section; a temperature sensing lumen positioned between the antenna lumen and the first outer surface of the catheter shaft; and an inflation lumen positioned between the urinary drainage lumen and the second outer surface, wherein the temperature sensing lumen, the antenna lumen, urinary drainage lumen and the inflation lumen each have a center of their respective transverse cross-sections aligned along a major axis of the generally elliptical shaped transverse cross-section of the catheter shaft and the first and second pair of cooling lumens are positioned symmetrically relative to the major axis of the generally elliptical shaped transverse cross-section of the catheter shaft.
References Cited (Backward Citations)
US3125096A
Cited
US2407690A
Cited
US3228400A
Cited
US3494723A
Cited
DE2407559A1
Cited
US3997408A
Cited
GB1563795A
Cited
US4140130A
Cited
US4154246A
Cited
US4162500A
Cited
SU738596A1
Cited
US4204549A
Cited
US4311154A
Cited
DE3011322A1
Cited
US4672980A
Cited
US4589423A
Cited
US4375220A
Cited
WO1981003616A1
Cited
US4469103A
Cited
US4423725A
Cited
EP0105677A1
Cited
US4662383A
Cited
US4676258A
Cited
US4497324A
Cited
US4601296A
Cited
US4690156A
Cited
US4612940A
Cited
WO1986001919A1
Cited
US4800899A
Cited
WO1986005990A1
Cited
SU1266548A1
Cited
US4672963A
Cited
US4732161A
Cited
US4821725A
Cited
US4632127A
Cited
DE3525702A1
Cited
US4681122A
Cited
US4643186A
Cited
US5057106A
Cited
US4700716A
Cited
WO1989002292A1
Cited
US4776086A
Cited
US4813429A
Cited
EP0246176A2
Cited
EP0248758A1
Cited
US4823812A
Cited
US4709698A
Cited
EP0253677A1
Cited
DE3725691A1
Cited
DE3730494A1
Cited
US4993430A
Cited
US5003991A
Cited
US4832023A
Cited
US4825880A
Cited
US4856528A
Cited
US4808164A
Cited
US5106360A
Cited
EP0311295A2
Cited
US5097845A
Cited
US4841988A
Cited
US4841988B1
Cited
SU1512622A1
Cited
WO1989005609A1
Cited
US5061267A
Cited
WO1989007909A1
Cited
EP0335022A1
Cited
US4907589A
Cited
US4924863A
Cited
EP0341988A1
Cited
US4869259A
Cited
WO1989011311A1
Cited
US4998933A
Cited
US4865047A
Cited
US4967765A
Cited
US5249585A
Cited
US5220927A
Cited
US5151100A
Cited
US4955377A
Cited
US5056531A
Cited
US5026959A
Cited
EP0459535A2
Cited
US5234004A
Cited
WO1991013650A1
Cited
EP0370890A1
Cited
US5242395A
Cited
WO1990013333A1
Cited
US5037395A
Cited
US5007437A
Cited
US5045056A
Cited
WO1991011975A1
Cited
EP0449472A1
Cited
WO1991015154A1
Cited
WO1991015174A1
Cited
US5271410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-13 | 2000-02-12 | 2000-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-13 | 2004-02-12 | 2004-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-13 | 2008-02-12 | 2008-08-13 | $7700.00 | Window Closed / Lapsed |