| http://www.w3.org/ns/prov#value | - Predisposed non-alignment of the valve passages 64a, 64b and 64c with the openings 70 and 72 is desirable in that escape or leakage through the valve assembly 48 of fluid, such as insufflation gas including air or carbon dioxide, supplied to an anatomical cavity in the course of many surgical and diagnostic procedures to facilitate visualization, enhance access and increase space, for example, is
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