
An endoscope provides a tube which is rigid enough along its length to be displaced by axial and rotational translation through open regions. The tip end of the tube is laterally flexible relative to the length of the tube. Wires connected to opposite sides of the flexible tip provide user control of the flexing of the tip. The sufficiently rigid length, flexible tip and dimensions of the tube enable placement of the tip end adjacent to kidney stones lodged in the ureter and calyxes of the kidne...











