SURTRON EVAC is an aspiration and filtering system for the smokes produced during the surgical procedures. SURTRON® EVAC is an aspiration and filtering system for the smokes produced during the surgical procedures. The smokes, generated during the surgical procedures, have a bad, strong and long smell. These smokes consist of water vapour, organic gas, visible or invisible solid particles and viral parts. So a good aspiration and filtration eliminates bad smells, reduce the bacteriologist and/or viral risks, and solves, the particulary annoying problem of the optimal vision of the zone of the intervention, during the laparoscopic procedures. In SURTRON® EVAC the activation of the aspiration can be: AUTOMATIC, through electronic system of survey of the activation of the high frequency electrosurgical unit; MANUAL, acting directly on the unit through a foot switch (optional) The flux of the aspiration can be regulated to be suitable with the singular necessities. For laparoscopic procedures there is a specific function, quickly selectable. SURTRON® EVAC has an electronic control of the aspiration with the indication of the usury status of the filters.