Trocar system having expandable port

摘要

A radially expandable dilator including a radially expandable dilation member and an elongate expansion member which defines a lumen and is itself insertable through an axial lumen of the dilation member, the expandable dilation member including a radially expandable tubular braid comprising a mesh of non-elastic filaments which axially shortens as the braid is radially expanded by the expansion member.