Patent ID: 6969392

Claim:
A multiportal device for percutaneous surgery at a symptomatic site, comprising: a cannula-guiding device; a first cannula for percutaneous access to said symptomatic site and at least a second cannula for percutaneous access to said symptomatic site, said first cannula having a proximal end and a distal end, said at least a second cannula having a proximal end a distal end; a cannula-linking mechanism with means for pivotally connecting said distal end of said first cannula with said distal end of said at least a second cannula, allowing relative motion of said first cannula and said at least a second cannula; a first guiding unit, which has a first longitudinal axis with a first through opening in the direction of said first longitudinal axis for insertion of said first cannula and at least one arm radially projecting from said first guiding unit in a direction substantially perpendicular to said first longitudinal axis of said first guiding unit; a second guiding unit, which has a second longitudinal axis with a second through opening in the direction of said second longitudinal axis for insertion of said at least a second cannula, said second guiding unit having means for riding along said at least one arm; a first clamping mechanism for clamping a cannula, selected from a group of cannulae, consisting of said first cannula and said at least a second cannula, said first clamping mechanism being located on a guiding unit selected from the group of guiding units, consisting of said first guiding unit and said second guiding unit; said first longitudinal axis and said second longitudinal axis intersecting in proximity of said symptomatic site, wherein said cannula-linking mechanism comprises at least one first locking member installed on said first cannula and a second locking member installed on all cannulae other than said first cannula, said second locking member being engaged with said at least one first locking member in a point of linking with a limited freedom of movement with respect to said at least one first locking member in the direction of said first longitudinal axis and with rotation around said point of linking.