The invention discloses a guiding device for a super-smooth guide wire, and relates to the technical field of
medical instruments, the guiding device comprises a plastic
catheter, a
metal guide wire is arranged in the plastic
catheter, the guiding device further comprises a displacement auxiliary mechanism arranged on the plastic
catheter, and the displacement auxiliary mechanism comprises a small knob slidably connected to the outer surface of the
metal guide wire through a
piston; the inner wall of the bottom end of the small knob is fixedly connected with an inner gear ring; through the arrangement of a small knob, an inner gear ring, a planetary gear, a positioning piece and a clamping piece, a medical worker can accurately control the moving distance of a
metal guide wire when controlling the metal guide wire to move in a
blood vessel of a patient, the accurate control of the moving distance of the guide wire can prevent complications such as
blood vessel perforation, interlayer or
aneurysm rupture caused by excessive
insertion of the guide wire; friction between the head end of the metal guide wire and the
blood vessel wall may cause plaque fragment falling, mechanical stimulation to the diseased region can be reduced by accurately controlling the moving distance, and the risk of far-end
embolism is reduced.