SEALS FOR SURGICAL ACCESS ASSEMBLIES

摘要

Access assemblies includes an instrument valve housing and a valve assemblydisposedwithin the cavity of the instrument valve housing. The valve assembly includesa guardassembly, a seal assembly disposed adjacent to the guard assembly, and acentering mechanismfor maintaining the seal assembly and guard assembly centered within a cavityof theinstrument valve. In embodiments, the seal assembly includes a plurality ofseal sections thatare movable from an unfolded configuration to folded configuration in whichthe seal assemblyforms a hexagonal member defining an opening to facilitate sealed passage of asurgicalinstrument. The seal sections may include a tapered inner edge for engaging asurgicalinstrument inserted through the instrument valve housing.