Abstract: Systems and apparatuses for pressurized fluid system handpieces having pumps and pump cartridge mechanisms. The system may have a console, the pump and pump cartridge, and the handpiece, with the pump and pump cartridge configured to deliver high velocity fluid to the handpiece. The pump may comprise the pump cartridge, at least one actuator and a means for driving the at least one actuator. The means for driving the at least one actuator drive fluid from an inlet into the pump cartridge and forces the fluid out of the pump cartridge through an outlet to the handpiece.

Abstract: A device and method for testing and monitoring, either manually or automatically, the performance of various components electrically linked to the electronic circuitry of a diagnostic instrument. Components of the electrical circuitry, including potentiometric operational amplifiers and a multi-channel connector, are tested for leakage current, A/D reference voltage, edge connector contact resistance and background noise.