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Aspirators designed to evacuate large volumes of gas, liquid, tissue and/or other debris from a surgical site by means of a high vacuum suction during surgical procedures. These devices usually consist of a powered vacuum pump, a regulator and gauge, one or more collection canisters, plastic tubes connecting the components to each other, and overflow protection and/or bacteria filter, and the suction tubing (e.g., tubes, catheters, cannulae). The vacuum capability should be at least 400 mm Hg; free-flow rates are usually higher than 25 liter/min. Surgical aspirators may be portable or mobile; line- or battery-powered. They are mainly used when suction from a central vacuum system is not available or appropriate.
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