Abstract: This disclosure relates to an improved liposuction apparatus having a handpiece. The handpiece may have a handpiece suction pathway extending through the handpiece from a front end to a back end of the handpiece and a handpiece infiltration fluid pathway extending through the handpiece from the front end to the back end of the handpiece, the handpiece suction pathway and the handpiece infiltration fluid pathway being separate and distinct. The handpiece may be configured such that, when a suction cannula having a suction cannula pathway is attached to the front end of the handpiece, the suction cannula pathway and the handpiece suction pathway are in fluid communication with one another. And, when an infiltration fluid cannula having an infiltration cannula pathway is attached to the front end of the handpiece, the infiltration cannula pathway and the handpiece infiltration fluid pathway are in fluid communication with one another.