Patent ID: 8795299

Claim:
Surgical screw-device configured to be anchored onto a wall of a tube-like structure inside the human body, the screw-device comprising a hollow screw having a longitudinal axis passing through the hollow of the screw with a plurality of windings coaxially aligned with each other with respect to the longitudinal axis, wherein at least two of the windings of the hollow screw are loose from each other in an axial direction of the hollow screw along the longitudinal axis, the at least two adjacent windings anchor and stably fix the wall of the tube-like structure between them without the need for occluding the tube-like structure by respectively retaining the inner and outer surfaces of the wall between the two adjacent windings, a front winding of said windings has a sharp perforating end rounded to a point in a conical manner, for perforating the wall of the tube-like structure in such a way that passage of the windings of the hollow screw through the wall of the tube-like structure by screwing is enabled to anchor the screw-device to the wall of the tube-like structure, and the two adjacent windings remain coaxially aligned with each other when the screw device is anchored to the wall, wherein the screw-device further comprises a hollow structure fixed onto the windings of said hollow screw.