Patent ID: 9622768
Date: 2017-04-18
CPC Classifications: A61B

Claim:
1. A water jet surgical instrument, comprising: a supply line for supplying a cutting fluid; a discharge nozzle for forming and discharging a fluid jet of the cutting fluid; a jet shaping device arranged relative to the discharge nozzle such that a spread angle and/or an emergence energy of a discharged fluid jet, emerging from a discharge aperture, is adjustable by the jet shaping device; and an adjusting element, wherein the discharge nozzle is movable via the adjusting element and within a sheathing tube comprising a sheathing tube aperture, wherein the jet shaping device is fixed relative to the sheathing tube, wherein, in a first position, the discharge nozzle extends distal of the jet shaping device and functions as the discharge aperture, and wherein, in a second position of the discharge nozzle, the discharge nozzle is fully retracted within the sheathing tube and the sheathing tube aperture functions as the discharge aperture, thereby setting an operating position of the discharge nozzle relative to the jet shaping device and setting the spread angle and/or the emergence energy of the discharged fluid jet.