A method and system that provide analytical tools for increasing average revenue per user allows users to design and execute marketing campaigns that target customers with a statistically significant likelihood of accepting a marketing campaign offer and generating the greatest increase in revenue. Additional apparatus and methods are disclosed. Thus, a more efficient driver is provided. The mounting assembly supports the discharge nozzle directly above the opening of the waste receptor, thereby facilitating discharge of the liquid waste directly into a municipal sewage line. The handles can be moved by the surgeon to produce a corresponding movement of the end effectors.