Water jet surgical instrument

摘要

Water jet surgical instruments comprising a feed line for supplying fluid in one flow direction and one exit nozzle for ejecting the fluid in the form of a fine jet displaying a defined geometric opening configuration are known. In order to be able to widen the jet a fluid chamber is provided—viewed in the direction of flow—upstream of the exit nozzle. A disturbance device is provided in or on the fluid chamber, said disturbance device being able to generate a turbulent flow inside the fluid chamber.

主权项

1. A water jet surgical instrument comprising:
a feed line for supplying fluid in one direction of flow; an ejection nozzle for ejecting the fluid in a jet having a defined geometric opening configuration; a fluid chamber provided upstream of the ejection nozzle, viewed in the direction of flow of the fluid; and a disturbance device provided in or on a wall of the fluid chamber and extending only part way across the fluid chamber so as not to contact an opposite wall of the fluid chamber, said disturbance device being able to generate a turbulent flow inside the fluid chamber, wherein a portion of the disturbance device directly connected to the wall moves from a first position to a second position.