Patent ID: 8454645

Claim:
A dissection and access assembly comprising: a cannula assembly having a cannula housing and an access cannula; a valve assembly having a port, the valve assembly being releasably coupled to the cannula assembly; a dissector assembly having a dissector housing with an attaching structure configured to engage a portion of the valve assembly and a rigid elongated tube having a passage, the elongated tube extending distally from the dissector housing, the dissector assembly insertable through the valve assembly and the cannula assembly; and a dissection balloon attached to a distal end of the elongated tube, the dissection balloon having a chamber in communication with the passage, wherein the port of the valve assembly is in fluid communication with a lumen of the access cannula when the valve assembly is releasably coupled to the cannula assembly, thereby allowing insufflation of a body cavity through the port, and the port is in fluid communication with the dissection balloon when the dissector assembly is positioned within the cannula assembly through the valve assembly, thereby allowing inflation of the dissection balloon through the port.