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    • 56. 发明专利
    • DE10331694A1
    • 2005-02-10
    • DE10331694
    • 2003-07-11
    • STORZ KARL GMBH & CO KG
    • IRION KLAUS MREBHOLZ CLEMENS
    • A61B17/22A61B17/92A61B17/225
    • A device for fragmenting substances comprises a probe having an elongate probe shaft on the distal end of which a probe head is arranged, said probe head comprising an electro-hydraulic converter with which electrical energy, delivered via the probe shaft from the proximal direction, is converted in shock-like manner into mechanical kinetic energy, said converter comprising a housing which accommodates a liquid chamber and a shock-transmitting element which is designed as a piston and which can be moved in the longitudinal direction of the housing from a proximal end position to a distal end position, the distal end position being defined by an abutment on the housing, which abutment is struck by a counter-abutment arranged on the shock-transmitting element. The abutment and the counter-abutment are designed in such a way that, during its movement from the proximal end position to the distal end position, the counter-abutment comes directly into contact with the abutment, and the shock-transmitting element is moved back again to the proximal end position essentially by the impact on the abutment.