Abstract: An assembly with a handpiece assembly configured to receive electromagnetic energy and fluid, and to selectively deliver the electromagnetic energy and/or the fluid to a target surface. The handpiece assembly includes a handpiece housing and a plurality of fluid lines extending through the handpiece housing. The plurality of fluid lines can transfer fluid from a proximal end of the handpiece assembly to a distal end of the handpiece assembly. A spray mixer can be positioned at the distal end that is coupled to fluid lines of the plurality of fluid lines. An air input port can be positioned at the proximal end that is configured to be coupled to an auxiliary air hose, and an air delivery channel can be coupled to the air input port, and can supply air to a tip of an exchangeable applicator that can be coupled to the distal end of the handpiece housing.

Abstract: A medical device includes a housing that is moved along a surface of a target tissue in a longitudinal direction. One or more supply lines conduct air and water to the housing. A pulse emitter emits electromagnetic pulses toward the surface at a repetition rate for the pulses to produce ablation holes in the tissue. The pulse emitter includes optical components and is configured to direct the air against the optical components to keep the optical components clean. One or more nozzles emit the water and the air in an air/water spray to moisturize and cool the target tissue prior to laser application.