An endoscopic surgical instrument having a surgical tool with at least one articulated member, a handle, a hollow elongated shaft connecting the tool and handle and having a hole in the shaft for flushing the shaft, and an actuating rod slidably disposed within the lumen of the shaft connecting the handle...http://www.google.com/patents/US5489290?utm_source=gb-gplus-sharePatent US5489290 - Flush port for endoscopic surgical instruments
