Low-profile surgical access devices with anchoring

1. A surgical access device comprising a proximal housing having proximal and distal end portions, the distal end portion of the housing being configured and adapted to engage a proximal portion of a flexible wound retractor, the proximal housing having a plenum chamber being defined in the proximal housing, the plenum chamber being in fluid communication with at least one nozzle, configured to direct pressurized fluid in an axial direction from the plenum chamber into a central bore of the surgical access device to provide a constant gaseous seal around a surgical instrument inserted therethrough, while inhibiting a loss of pressurized fluid from the body cavity therethrough, and wherein the plenum chamber is adapted and configured to receive pressurized fluid and conduct the pressurized fluid to the at least one nozzle and wherein the distal end portion of the housing and proximal portion of the flexible wound retractor are adapted and configured to detachably engage with one another.