1. Fixing device for intravital lumen comprisinga base (18) andfixing mechanism (5) mounted on the base (18),characterized in thatfixing mechanism (5) comprisesbody (5a),at least a set of clamping brackets (3) anda pivot (7)wherein each clamping bracket (3) provided with an opening bracket (3b), and the pivot shaft (7) passes through a bracket hole (3b) and fixes each set of clamping brackets on the body (5a) wherein in the housing (5a) is formed a passage (13) for insertion and removal force application mechanism (1) and a housing (5a) through hole (8) for the gas inlet in the locking mechanismwherein when the fixing device placed in intravital lumen (11) through hole (8) is pulled gas soft cloth (11a) intravital lumen enters the gap (3d) between the pair of clamping brackets (3) and the rear ends at least a pair of clamping brackets (3) force is applied to cause the rotation of the clamping brackets (3) about the pivot axis (7) andby rotating the clamping brackets (3), the degree of opening the front ends of the pair of clamping brackets (3) becomes smaller, which causes compression of the soft tissue and into the clamping gap (3d)and when the clamping bracket (3) are closed, the soft tissue becomes clamped and placed in a small gap, which leads to a fixing device for fixing a wall of the lumen intravital tissues.2. Device according to claim 1, characterized in that each clip (3) includes a locking mechanism (3e), mounted on it,and when the pair of clamping brackets (3) closed, the tissue intravital lumen is compressed and placed in a small gap, with the clamping brackets (3) are locked locking mechanism (3e).3. Apparatus according to claim 2, characterized in that the force to the rear ends (3a) of the clamping brackets is created using an application force of the mechanism (1) medical or filament (12).4. The apparatus of claim 1, further comprising a compression spring (27) connected to the rear ends of the pair of clamping brackets (3) and the locking bolt (26)