Surgery – Truss – Pad
Patent
1988-08-18
1990-08-14
Jaworski, Francis
Surgery
Truss
Pad
128774, 73597, A61B 800
Patent
active
049478516
ABSTRACT:
In a method and device for the non-invasive acoustic testing of the elastty of soft biological tissues for the diagnosing of physiological and pathological state in humans and animals, tangential oscillatory deformations of the frequency range of 0.5-30 kHz are excited on the surface of a tissue, and a velocity of the excited surface wave propagating along the vector of the initial displacement is determined. The device includes a probe with one transmitting and two receiving piezotransducers equipped with contact tips and mounted to the body of the probe by elongated shafts which serve as acoustic delay lines, and an electronic device which forms pulses to excite the transmitting transducer, processes the received acoustic signals, measures the time-of-flight of acoustic pulses from the transmitting transducer to the receiving transducers, converts it into the velocity of surface wave and displays the value of the velocity.
REFERENCES:
patent: 4217912 (1980-08-01), Hubmann et al.
patent: 4250894 (1981-02-01), Frei et al.
patent: 4777599 (1988-10-01), Dorogi et al.
patent: 4790188 (1988-12-01), Bussiere et al.
patent: 4799498 (1989-01-01), Collier
Ponomarjev Viktor
Popovic Goran
Sarvazyan Armen P.
Veksler Akiva
Vucelic Dusan
Institute for Biological Physics of the USSR Academy of Science
Institute for Physical Chemistry
Jaworski Francis
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