Surgery: kinesitherapy – Kinesitherapy – Ultrasonic
Patent
1994-07-15
1996-03-26
Kamm, William E.
Surgery: kinesitherapy
Kinesitherapy
Ultrasonic
601 2, 12866003, 607 97, 607154, A61N 702
Patent
active
055016553
ABSTRACT:
An ultrasound hyperthermia applicator suitable for medical hyperthermia treatment, and method for using the same, includes two ultrasound sources producing focused ultrasound beams of frequencies f.sub.0 and f.sub.1. An aiming device directs the two ultrasound beams so that they cross each other confocally at the target. A controller activates the two ultrasound sources so that the target is simultaneously irradiated by the two focused ultrasound beams. The two ultrasound sources provide acoustic energy sufficient to cause significant intermodulation products to be produced at the target due to the interaction of the two ultrasound beams. The intermodulation products are absorbed by the target to enhance heating of the target. In preferred embodiments the ultrasound sources include pair of signal generator for producing gated ultrasound output signals driving single crystal ultrasound transducers. In other embodiments the ultrasound sources include a pair of phased array ultrasound transducers for generating two steerable ultrasound beams. An aiming device is provided for electronically steering and focusing the two ultrasound beams so that they cross each other confocally at the target. Further embodiments employ pluralities of transducers, arrays, or both.
REFERENCES:
patent: 3763463 (1973-10-01), Muir
patent: 4343301 (1982-08-01), Indech
patent: 4441486 (1984-04-01), Pounds
patent: 4586512 (1986-05-01), Do-huu et al.
patent: 4622972 (1986-11-01), Giebeler, Jr.
patent: 4646756 (1987-03-01), Watmough et al.
patent: 4798215 (1989-01-01), Turner
patent: 4815479 (1989-03-01), Carr
patent: 4836191 (1989-06-01), Noske et al.
patent: 4860752 (1989-08-01), Turner
patent: 4875487 (1989-10-01), Seppi
patent: 4889122 (1989-12-01), Watmough et al.
patent: 4893624 (1990-01-01), Lele
patent: 4936303 (1990-06-01), Detwiler et al.
patent: 4938216 (1990-07-01), Lele
patent: 4938217 (1990-07-01), Lele
patent: 4957099 (1990-09-01), Hassler
patent: 4960109 (1990-10-01), Lele
patent: 5123404 (1992-06-01), Takayama
patent: 5209234 (1993-05-01), LaRocca
patent: 5230334 (1993-07-01), Klopotek
"Temperature Elevation in Tissues Generated by Finite-amplitude Tone Bursts of Ultrasound" by Wu and Du, J. Acoust. Soc. Am, 88(3), Sep. 1990, pp. 1562-1577.
Carpenedo, et al. (1987) Acoustics Letters, vol. 10, No. 11, pp. 178-181.
Dunn, et al. (1965) J. Sound Vib. vol. 2, No. 4, pp. 471-476.
Lele, et al. (1982) Br. J. Cancer, vol. 45, Suppl. V, 108, pp. 109-121.
Fessenden, et al. (1984) IEE, vol. BME-31, No. 1 pp. 126-135.
Nishimura, et al. (1984) Jap. J. of Appl. Phys. vol. 23, Suppl. 23-1, pp. 221-223.
Lele Padmakar P.
Rolt Kenneth D.
Casler Brian L.
Kamm William E.
Massachusetts Institute of Technology
LandOfFree
Apparatus and method for acoustic heat generation and hypertherm does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for acoustic heat generation and hypertherm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for acoustic heat generation and hypertherm will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-912771