Patent ID: 7935054

Claim:
A minimal incision maximal access expansion system comprising: a first main support; a second main support; a remote lateral force assembly attached to and located between said first main support and said second main support, said remote lateral force assembly being configured to controllably move said first main support apart from said second main support; a first hemicylindrical member having at least a first upper pivot axis support providing an upper first hemicylindrical member axis of rotation nearer a proximal end of said first hemicylindrical member and at least a first lower pivot axis support providing a lower first hemicylindrical member axis of rotation nearer a distal end of said first hemicylindrical member, said first lower pivot axis support pivotally supported from said first main support, and said first upper pivot axis support force displaceable from said first main support, the first hemicylindrical member being pivotal about the upper pivotal axis and the lower pivotal axis; a second hemicylindrical member having at least a second upper pivot axis support providing an upper second hemicylindrical member axis of rotation nearer a proximal end of said second hemicylindrical member and at least a second lower pivot axis support providing a lower second hemicylindrical member axis of rotation nearer a distal end of said second hemicylindrical member, and oriented with respect to said first hemicylindrical member to form a tube shape when brought into close proximity to said first hemicylindrical member, the second hemicylindrical member being pivotal about the upper pivotal axis and the lower pivotal axis, said second lower pivot axis support pivotally supported from said second main support, and said second upper pivot axis support force displaceable from said second main support, said remote lateral force assembly providing clearance displaced from said first and second hemicylindrical members to facilitate introduction of other structures proximal said first and said second hemicylindrical members, said first hemicylindrical member and said second hemicylindrical member being independently pivotable with respect to each of said first and second main supports and with respect to other said hemicylindrical member; first and second tiltable members provided on said first and second main supports, respectively, said first and second tiltable members configured to tilt said first and second main supports; a first threaded force member supported by a first internal thread supported within said first main support and having an end terminating adjacent said first upper pivot axis support of said first hemicylindrical member; and a second threaded force member supported by a second internal thread supported within said second main support and having an end terminating adjacent said second upper pivot axis support of said second hemicylindrical member.