Patent ID: 7988619

Claim:
A diagnostic device for pathologies of tubular anatomical structures comprising: a tubular elongated structure having a proximal end and a distal end and being suitable to be inserted in the tubular anatomical structure, means for locally dilating the walls of the tubular anatomical structure that when such structures are adjacent the distal end of said elongated structure, said means for locally dilating being movable between a closed position for the introduction of the device and at least one open position for the viewing and evaluation of the pathology, control means being associated with the proximal end of the elongated structure, said control means being operatively connected to said means for locally dilating in order to move them between the closed position and the open position, and vice versa, wherein said locally dilating means comprise: an inner tube and an outer tube housing said inner tube therein, a plurality of inner arms linked to a distal end of said inner tube and a plurality of outer arms linked to a distal end of said outer tube, wherein each one of said inner arms is coupled to respectively one of said outer arms by means of detachable shape-coupling such that a translation of the inner tube with respect to the outer tube moves the outer arms from said closed position to said open position and vice versa, wherein said inne and outer arms radially expand when transitioned from said closed position to said open position, wherein said inner tube with said inner arms is insertable in said outer tube with said outer arms and a rotation of the inserted inner tube with respect to the outer tube moves said inner arms from a detached angularly offset position with respect to the outer arms to an overlapping position with the outer arms, thereby creating said shape coupling.