Electrohydraulic lithotripsy

Details Electrohydraulic lithotripsy Electrohydraulic lithotripsy

1991-02-26

1992-10-06

Aschenbrenner, Peter A.

Surgery

Instruments

Means for concretion removal

606 32, 128 24EL, A61B 1722

Patent

active

051527685

ABSTRACT:
Method and apparatus for fracturing hard deposits such as urinary and biliary calculi and arteriosclerotic plaque in the human body. An elongate guide member having an apertured hollow adjacent its distal end is inserted within the body with the distal end positioned adjacent the target. A working fluid is supplied to the hollow, and an electric spark is discharged within the hollow from an external energy source for generating pulse waves in the working fluid. The resulting pulse waves express working fluid from the hollow to impinge on the target. Makeup fluid is supplied and the spark repeated. The method and apparatus also may be advantageously employed for dilating narrowing in hollow internal structure in the body.

REFERENCES:
patent: 4030505 (1977-06-01), Tessler
patent: 4191189 (1980-03-01), Barkan
patent: 4870603 (1990-01-01), Filler
patent: 4927427 (1990-05-01), Kriauciunas et al.
patent: 4960108 (1990-10-01), Reicher et al.
patent: 4966132 (1990-10-01), Nowacki et al.

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