Device and system for opening up branch point of pipe assembly

A device for opening up a branch point in a pipe assembly, comprising:

• a rotation axle arranged to be rotatable and a tip part located at a most front portion of the device arranged to be rotatable and in connection of which there is at least one blade, as well as a centralizing system separate from the tip part and arranged to be substantially non-rotating when the tip part is rotated, and the centralizing system comprising a first disc and a second disc through which the rotation axle is arranged to pass, and a spring located between the first disc and the second disc that urges the first disc away from the second disc and positions the discs as planes perpendicular to the rotation axle;
• each of the discs having numerous protrusions radially protruding from an outer edge of the discs, the protrusions being more elastic than the discs;
• the blade being attached to the tip part and extending in a forward and longitudinal direction from the tip part;
• and each protrusion of the discs being movable between a first position wherein the protrusion is perpendicular relative to the rotation axle and a second bent position without bending said discs.