Patent ID: 8790353

Claim:
A device for mechanical lithotripsy and removal of calculi that form in the be duct or in the urinary system, for use in connection with an endoscopic retrograde cholangiopancreatography, the device comprising: a stone collecting basket arranged on a distal end of the device, a cable connected to said stone collecting basket and guided in a tube for initiating an opening or closing movement of said stone collecting basket for receiving the calculus, an actuation device arranged on a proximal end of both the tube and the cable, said actuation device comprising a first actuating element configured as a screw drive, the first actuating element for the lithotripsy of the calculus, a second actuating element configured as a screw drive, the second actuating element for an opening and a dosing movement of the stone collecting basket, the first actuating element and the second actuating element forming a common structural unit that is arranged substantially concentrically to the tube and the cable, a turning handle coupled to a switching device, the turning handle substantially concentrically to the cable and the tube, the turning handle having a first position for the lithotripsy of the calculus and a second position for the opening and the closing movement of the stone collecting basket, and the switching device having a first position where the switching device is coupled to the first actuating element for the lithotripsy of the calculus and a second position where the switching device is coupled to the second actuating element for the opening and the closing movement of the stone collecting basket.