SET FOR REDUCTION AND EXTERNAL FIXATION OF FRAGMENTS OF BONES OF EXTREMITIES AND/OR PELVIS Russian patent published in 2017 - IPC A61B17/60 A61B17/62 A61B17/64 

FIELD: medicine.

SUBSTANCE: invention relates to medicine. Set for repositioning and external fixation of fragments of bones of extremities and/or pelvis comprising placed in container at least one fiberglass bar of X-ray transparent material, at least two Schantz pins, at least one retainer and T-shaped switch for manual insertion of Schantz pins during operation and tightening of fixator clamp nut. Schantz pins have on proximal end side cortical thread with helical, self-threading and self-tapping sharpening, from distal end - polyhedral shape and annular groove, made on trihedral profile for fixation of Schantz pin in T-shaped switch to prevent spontaneous fall out of Schantz pin from T-shaped switch during operation. Fixator is made solid and includes at least two clamping units, each of them comprises two clamping jaws - internal and external. Clamping units are connected by axial screw provided with retainer, placed on one side of axial screw, and clamping nut, placed opposite side of axial screw on its threaded part. Spring element is placed between clamping units and provides at extreme “free” position of clamping nut arrangement of clamping units on axial screw at distance from each other with simultaneous pressing clamping of jaws of each clamping unit to each other, at opposite clamping nut position with tight pressing of clamping units and their jaws to each other. Each clamping unit allows simultaneous arrangement between its jaws of one Schantz pin and one bar and turn at axial screw at “free” position of clamping nut. Each clamping unit is provided with shaped supports for fingers of surgeon made on opposite side surfaces of clamping jaws in form of slots and oriented along axial screw to provide convenience of grip of fixture. Groove made on one jaw of one unit has extension to second jaw of this unit to make one lodgement. T-shaped switch has handle with perpendicular located bearing bar. Handle at one end has inner hole for clamping nut of retainer. Bearing rod end is equipped with device for locking Schantz pin, which has internal axial channel of distal end of Schantz pin, and ball mechanism arranged in body for fixation of Schantz pin to interact with annular groove on trihedral profile of Schantz pin.

EFFECT: invention provides reduction of pain syndrome, reducing risk of life-threatening complications, considerably easier transportation.

31 cl, 22 dwg, 1 ex