FIELD: medicine.SUBSTANCE: group of inventions relates to medical equipment, namely to an energy-efficient device and a method for using it to penetrate through the total occlusion of a blood vessel during percutaneous coronary intervention or to improve the catheter delivery ability during percutaneous transluminal angioplasty through partial occlusion of a blood vessel. Device for penetrating through the occlusion of a blood vessel comprises a catheter, a spring element, a drilling component and a tension element. Catheter has a near end and a far end. Spring element has a near end and a far end. Near end of the spring element is attached to the far end of the catheter. Spring element is a compression spring. Drilling component is adjacent to the far end of the spring element and is functionally attached thereto. Drilling component comprises a spring having at least two tightly compressed adjacent turns running to the furthest end of the device. Tension element is located inside the catheter. Tension member has a near end and a far end. Far end of the tension member is attached to a far structure selected from the group consisting of the spring element and drilling component. System for penetrating the occlusion of a blood vessel comprises the above device and a control unit configured to control a vibrational energy source. Proposed is a method for passing the catheter through the occlusion of a vessel, according to which: said device is introduced into a vessel； the drilling component is placed in contact with occlusion and a sequence of tension forces acting on the tension element, thereby causing oscillations of the drilling component with amplitude and frequency sufficient to penetrate through the occlusion, is generated from a vibrational energy source. Catheter system comprises said device for penetrating through the occlusion of a blood vessel and a guidewire passing through the lumen of the catheter of said device.EFFECT: inventions provide an efficient t
