| http://www.w3.org/ns/prov#value | - Referring back to FIG. 3, in various embodiments, the port assembly 310 and/or ports 311, 312, 313 may be configured to provide a barrier or resistance to air or other gas, such as carbon dioxide used for insufflation, from passing from outside to inside, or inside to outside, the patient's body and thereby prevent or limit potential infection and/or desufflation.
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