Apparatus for extracorporeal lithotripsy using shock waves and t

Details Apparatus for extracorporeal lithotripsy using shock waves and t Apparatus for extracorporeal lithotripsy using shock waves and t

1989-08-15

1990-12-11

Howell, Kyle L.

Surgery

Truss

Perineal

A61B 1722

Patent

active

049762559

ABSTRACT:
An apparatus for extracorporeal lithotripsy has one or more shock wave sources for generating shock waves converging at a focus zone in which a calculus to be disintegrated is located in a patient, and additionally has a therapeutic ultrasound source for generating ultrasound waves focused at a focus zone substantially coinciding with the focus zone of the shock wave source. The ultrasound waves generated by the therapeutic ultrasound source have a sufficiently high energy to be effective for assiting in disintegrating the calculus, as contrasted with ultrasound waves used to obtain an ultrasound image. The shock wave source and the therapeutic ultrasound source can be driven from a generator stage connected both sources, which is capable of driving the sources simultaneously or in selected chronological succession, such as in alternation.

REFERENCES:
patent: 4658828 (1987-04-01), Dory
patent: 4745920 (1988-05-01), Forssmann et al.
patent: 4771787 (1988-09-01), Wurster et al.
patent: 4844079 (1989-07-01), Naser et al.

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