Ultrasonic heating apparatus and method

Details Ultrasonic heating apparatus and method Ultrasonic heating apparatus and method

1987-11-20

1990-06-26

Jaworski, Francis

Surgery

Truss

Pad

128 24A, A61F 700

Patent

active

049363034

ABSTRACT:
A method and apparatus for the treatment of tumors by heating with ultrasonic energy. A transducer assembly is provided in a housing having a refractive assembly disposed between the tumor and the transducer. The refractive assembly moves with respect to the transducer assembly. The refractive assembly includes one or more refractive elements. The refractive assembly is interchangeable to provide treatment of different types of tumors using the same transducer assembly and housing. The refractive assembly may focus, deflect or diffuse the ultrasonic energy depending on the arrangement of elements. Motion of the refractive assembly relative to the tumor results in a time-averaging spatial deposition pattern which is more highly uniform due to the averaging of maxima and minima which occurs in the near field.

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patent: 4131022 (1978-12-01), Mezrich
patent: 4213344 (1980-07-01), Rose
patent: 4486076 (1984-12-01), Taenzer
patent: 4549533 (1985-10-01), Cain et al.
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patent: 4622972 (1986-11-01), Giebeler, Jr.
patent: 4646756 (1987-03-01), Watmough et al.
A Large Aperture Ultrasonic Array System for Hyperthermia Treatment of Deep-Seated Tumors, Seppi, et al., 1985 IEEE, 1985 Ultrasonics Symposium, pp. 942-948.
A Therapeutic Ultrasound System Incorporating Real-Time Ultrasonic Scanning, F. L. Lizzi, et al.; Copyright 1986 IEEE, 1986 Ultrasonics Symposium, pp. 981-984.

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