METHOD OF CLEANING PASSAGEWAYS USING A MIXED PHASE FLOW OF A GAS AND A LIQUID

摘要

Method of cleaning surfaces such as biopsy device (300), using a mixed phase of an aqueous solution and a flow of gas. The biopsy device (300) has central wire (320) which is surrounded by a sheath (310). The sheath (310) may be made of helically coiled wire having multiple turns (315). In order to mixed phase flow to be introduced for cleaning, it is convenient to use access points already designed into the biopsy device (300), i.e., where wire (320) enters and leaves the sheath (310). Cleaning of the outside surface of the biopsy device (300) can be accomplished using mixed phase flow by encompassing the exterior of the biopsy device (300) into tube of slightly larger diameter (380).