Surgical instrument, for flushing a surgical site and extraction of liquid and blood, has a shaft formed by concentric tubes to give the separate flushing and suction channels

摘要

The surgical instrument (10) to flush a surgical site, and extract water and blood, has a longitudinal shaft (12) with a suction channel (18) and a flushing channel (22) through it. The shaft has a closed tube (26) for one of the channels, and an open tube (28) pushed over the closed tube along the shaft length with its open longitudinal side on an outer side of the closed tube in a sealed fit. The second channel is formed by the free space between the outer side of the inner tube and the inner side of the outer tube. The tubes are bonded together by an adhesive, solder, or laser welding.