Means and method for the noninvasive fragmentation of body concr

Surgery – Truss – Pad

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128 24A, 128328, A61B 1722

Patent

active

048217298

ABSTRACT:
Apparatus and method for noninvasive fragmentation of body concretions. The apparatus has an integral unit including an ultrasonic locating transducer a relative position determining device, a shockwave generating device and a positioning structure. The method for locating a body concretion includes the steps of locating the body concretion with ultrasonics, the position of the shockwave generating device relative to the concretion, accurately positioning the shockwave generating device at the location of the concretion and then shattering the concretion by generating a shockwave. The shockwave generating device includes a reflector with first and second foci, a location verifying ultrasonic transducer which is positioned so that an axis of the verifying transducer is coincident with a straight line passing through the first and second foci and a spark gap at the first focus which generates the shockwave.

REFERENCES:
patent: 4526168 (1985-07-01), Hassler et al.
patent: 4620546 (1986-11-01), Aida et al.
patent: 4669483 (1987-06-01), Hepp et al.

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