| http://www.w3.org/ns/prov#value | - When an aqueous liquid is present at the tissue site, carbon dioxide or other biocompatible gas is infused into the sheath or handpiece and through the passageway defined between the optical fiber and the sheath, and displaces the liquid in the region between the distal end of the sheath and the adjacent tissue, creating a substantially liquid-free region between the distal end of the energy condu
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