CN2285638Y - Repositor for internal fixation of fracture of tubular bone - Google Patents

Abstract

The utility model relates to an inner fixing operation restoring device for the fracture of tubular bones. The device is provided with a screw rod 1 of which the middle is provided with a hexagonal rod or a quadrangular rod, and both ends of the screw rod 1 are provided with bidirectional threads. The threaded rod at both ends of the screw rod 1 are respectively provided with movable steering rods 2 and 3. The lower ends of the two rods are provided with working rods 5 and 6 which are hinged through a pin 7 and are provided with matching holes 8 on the lower ends. The utility model has the advantages of simple structure and convenient use. The breaking bones of the fracture move simultaneously in the same direction or in the opposite directions via the motion of the bidirectional threads to achieve the sufficient contraposition and restoration of breaking surfaces. The utility model alleviates the operating work intensity of operators, simultaneously shortens the time of operations and reduces infection.

Description

A kind of tubular bone fracture internal fixation operation resetting means

This utility model relates to the assistive device of medical operating, particularly a kind of tubular bone fracture internal fixation operation resetting means.

The internal fixation of tubular bone fracture in the prior art must have reduction with good before fixing, could guarantee fixed effect.Particularly reset, in the orthopaedics internal fixation operation, never solved well for before big italic, comminuted fracture and old fracture fixing.Routine only is that hand-held bone holder of armrest art operator and assistant cooperate the manpower traction to reset, and needs to consume a large amount of muscle power of operator, and the operating time is prolonged, increased the open-assembly time of operative incision, the chance of infection is increased, and intraoperative hemorrhage increases, and is totally unfavorable to patient.And, for serious comminuted fracture or some old fracture, because muscle spasm and contraction, almost may not reach satisfied reset effect, just let alone good fixing yet.Based on this, the purpose of this utility model has been proposed.

The purpose of this utility model is to design a kind of tubular bone fracture internal fixation operation resetting means.

The purpose of this utility model realizes according to structure described below, this tubular bone fracture internal fixation operation resetting means, it is characterized in that it is that the two ends of six or tetragon bar are the screw mandrels 1 of bidirectional helical that this device has a middle part, screw portion at these screw mandrel 1 two ends respectively has a movably break-in bar 2 and 3, is the working beam 5 and 6 that has mating holes 8 by pin 7 hinged lower ends in the lower end of this two bar.

The utility model has the advantages that its major advantage is simple in structure, easy to use, by the motion of bidirectional helical, the knochenbruch locking phase that makes fracture to or oppositely move abundant involutory the resetting that reaches section.Greatly alleviate the working strength of operator operation, also shortened operating time simultaneously, reduced infection and hemorrhage.Substantially need not transfuse blood or seldom need and transfuse blood, the pathogenic chance that makes patient avoid haematogenous to infect substantially.

Description of drawings, accompanying drawing are structure cutaway views of the present utility model, and each sequence number in the accompanying drawings is: 1, screw mandrel, 2,3, mobile break-in bar, 4, hexagonal or square pole, 5,6, working beam, 7, pin, 8, mating holes.

Below in conjunction with the embodiment in the accompanying drawing, describe structure of the present utility model and use in detail.With reference to accompanying drawing, this tubular bone fracture internal fixation operation resetting means, it is characterized in that it is that the two ends of six or tetragon bar are the screw mandrels 1 of bidirectional helical that this device has a middle part, the screw portion at these screw mandrel 1 two ends respectively have one movably break-in bar 2 and 3, be the working beam 5 and 6 that has mating holes 8 by pin 7 hinged lower ends in the lower end of this two bar.During operation, at knochenbruch position otch, squeeze into two nails at the two ends of knochenbruch suitable position (with slightly long being advisable of length) than fixation steel plate according to routine.With the working beam 5 of device of the present utility model and 6 by rotary screw rod 1, make its distance of opening and two nails apart from basically identical, then, the mating holes on it 8 is enclosed within on the nail.Set upright mobile break-in bar 2 and 3, it is substantially aligned and vertical substantially with two working beams 5 with 6 with nail.On square pole or hexagon bar 4, make the isolating direction rotary screw rod 1 of two knochenbruch towards one, promptly drive the break-in bars and working beam together moves by two on the mobile break-in bar two-way nuts with spanner.Mating holes 8 on the while working beam 5 and 6 also together drives nail and moves, and strained fracture is separated draw back, perform a surgical operation.After cleaning knochenbruch and the processing, bone cips is involutory, and centering fully coincide the place of fractureing of knochenbruch.Reuse spanner court and opposite just now direction rotary screw rod 1, same as above, two knochenbruch are moved to closed together direction, reach the purpose of anatomical reduction.Wait to reset and finish, screw mandrel 1 and mobile break-in bar 2 and 3 are rotated around mobile break-in bar and working beam 5 and 6 hinged pins 7 together, screw mandrel 1 is removed from the top of operative incision, generally rotate an angle of 90 degrees degree and get final product.At this moment, since the mating reaction of pin 7 and working beam and mobile break-in bar, the tetragon that screw mandrel 1 and knochenbruch still keep metastable sealing four bars to form.The top of the operative incision position of this moment has not had obstacle, can be in the both sides, disconnected place of knochenbruch, and fixation steel plate is put in boring, is screwed into nail, and with steel plate and knochenbruch stationary positioned, operation is promptly finished.Mobile break-in bar 2 and 3 effect promptly are to move to the two ends of screw mandrel 1 under the effect of the rotation of screw mandrel 1, and screw mandrel 1 can be rotated around pin 7 by this two bar.Left-handed and the right-handed thread of triangle on the screw mandrel can guarantee that promptly enough frictional force makes its self-locking when stopping operating, and can provide enough pulling force for drawing back the muscle of knochenbruch and the distortion around it again.

Claims (1)

1, a kind of tubular bone fracture internal fixation operation resetting means, it is characterized in that it is that the two ends of six or tetragon bar are the screw mandrels 1 of bidirectional helical that this device has a middle part, screw portion at these screw mandrel 1 two ends respectively has a movably break-in bar 2 and 3, is the working beam 5 and 6 that has mating holes 8 by pin 7 hinged lower ends in the lower end of this two bar.

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