Increased uniformity of incision depth of pulsed water jet device

Abstract

Object. Pulsed water jet surgical instrumentation is intended to achieve both maximal lesion resection and functional maintenance through preservation of fine vessels and minimal surrounding damage. On the other hands, Increased uniformity of incision depth is critical problem to exclude the potential occurrence of dissemination.Methods. This system consisted of a pump chamber driven by a piezo actuator, a stainless steel tube, and a nozzle. The relationship between jet output, jet frequency, jet nozzle diameter, distance between nozzle and the target, rupture stress and uniformity of incision depth. The excision was quantitatively evaluated using high speed camera.Result. It is suggested that the jet output, jet frequency, jet nozzle diameter, distance between nozzle and target, rupture stress and uniformity of incision depth are involved.