Patent ID: 7100846

Claim:
A water jet device for separating of a biological structure, essentially comprising a pressure water flow generator ( 1 ), an operatable control and automatic water control unit ( 2 ) and a supply capillary ( 3 ) with a separating nozzle ( 14 ), wherein a separating water jet exits from the separating nozzle ( 14 ), wherein the separating nozzle ( 14 ) is furnished with a nozzle channel ( 15 ) with a circular cross-section and wherein the separating nozzle ( 14 ) is disposed at the distal end of the supply capillary ( 3 ), wherein the separating nozzle ( 14 ), is disposed fixedly positioned and coaxial to the supply capillary ( 3 ) and wherein the nozzle channel ( 15 ) is furnished with at least one spiral groove ( 16 ) and wherein the number of the spiral grooves ( 16 ) and the diameter and the length of the nozzle channel ( 15 ) are placed in such a ratio to each other that the separating water jet subjected to pressure is rotated.