CN2440458Y - Automatic opening repositor for bone fracture - Google Patents

Abstract

The utility model relates to a medical appliance for a department of orthopedics, particularly an automatic opening repositor for a bone fracture. The utility model is composed of a fixing rod, a movable rod, a gear rack of a slide plate, etc., wherein, the front end of the gear rack of the slide plate is provided with the fixing rod which is perpendicular to the gear rack of the slide plate. The movable rod which is parallel to the fixing rod is arranged on the fixing rod through a gear shaft. The end parts of the fixing rod and the movable rod are respectively provided with a Stenonian needle which is arranged in a sloping mode through fastening bolts. Compared with a common hook-shaped bone hook, the utility model has the advantages of reasonable dynamics structural design, simple operation, and convenient usage. During operation, a periosteum does not require to be widely stripped, operation wound is small, operation time is obviously shortened, work efficiency is enhanced, and simultaneously, opportunities of infection are reduced. The utility model is good to the immediate union of a fracture and is an ideal special apparatus for treating the overlapping and the displacement of the fracture.

Description

The automatic distraction reduction device of fracturing

This utility model relates to the orthopaedics medical apparatus and instruments, the automatic distraction reduction device of particularly a kind of fracture.

During the fracture open reduction, owing to do not give the bone traction before the art, two fracture ends easily go out the line overlap displacement, under the present circumstances, often need to give reduction by traction with common hook-shaped hamulus of hamate bone in art.But to the patient of old fracture, because the soft tissue contractura around key, the hamulus of hamate bone traction is wasted time and energy, and haves no alternative but to sting out the part epiphysis sometimes and just can reset, and this not only adds heavy patient's damage, has also caused very big difficulty to operation simultaneously.

The purpose of this utility model is exactly in order to overcome above-mentioned weak point of the prior art, and a kind of automatic distraction reduction device of fracture that makes conveniently and patient not have damage is provided.

The purpose of this utility model is such realization: it is made up of parts such as fixed bar, motion bar, slide plate tooth bars, this slide plate tooth bar front end is equipped with perpendicular fixed bar, by the tooth axle motion bar parallel with this fixed bar is housed on it, its end of said fixed bar and motion bar is equipped with the steinman pin of oblique setting respectively by fastening bolt.

This utility model is compared with common hook-shaped hamulus of hamate bone of the prior art, and is simple to operate, easy to use, has science, advance and practicality.23 illustrations of clinical practice are bright, need not in the art extensively to peel off periosteum, and amount of bleeding is few, operation wound is little, has obviously shortened between operation in fact, has improved work efficiency, simultaneously also reduced infection chance, the immediate union that helps fracturing be can yet be regarded as and handled the desirable special equipment of the overlapping displacement of fracture.

The explanation of accompanying drawing drawing:

Fig. 1 is a structural representation of the present utility model.

Below in conjunction with drawings and Examples in detail this utility model is described in detail.

This utility model embodiment is made of fixed bar 1, slide plate tooth bar 2, tooth axle 3, rocking handle 4, motion bar 5, fastening bolt 6, steinman pin 7, these slide plate tooth bar 2 front ends are equipped with perpendicular fixed bar 1, by tooth axle 3 motion bar 5 parallel with this fixed bar 1 is housed on it, said fixed bar 1 and motion bar 5 its ends are equipped with the steinman pin 7 of oblique setting respectively by fastening bolt 6.Two pieces of steinman pins 7 respectively with fixed bar 1 and motion bar 5 axis angle at 45, and this angle direction is opposite.Rocking handle 4 is housed on the tooth axle 3.

This utility model mechanical structure is reasonable in design, steinman pin 7 and the backbone of two pieces of diameter 3mm are 45, run through two backbones to the offside cortical bone, select as required to screw steinman pin 7 along the fastening bolt 6 of (contrary) hour hands screw thread, make it in the process of strutting, fastening bolt 6 produces pressurization with steinman pin 7, prevents that any slip from appearring in bolt 6 and steinman pin 7.By rocking handle 4 turning gear axles 3 motion bar 5 is distad slided along slide plate tooth bar 2 then, strut with lasting cumulative machinery and support out fracture end.Strut the fracture end of the existing medium callus formation of adult thighbone overriding fracture after tested, need strut power 680N.And the Li Keda 2200N that struts of the present utility model, distraction reduction is infallible, time saving and energy saving in the art.

Claims (3)

1, the automatic distraction reduction device of a kind of fracture, comprise fixed bar (1), motion bar (5), slide plate tooth bar (2), it is characterized in that its front end of slide plate tooth bar (2) is equipped with perpendicular fixed bar (1), by tooth axle (3) motion bar (5) parallel with this fixed bar (1) is housed on it, said fixed bar (1) and its end of motion bar (5) are equipped with the steinman pin (7) of oblique setting respectively by fastening bolt (6).

2, the automatic distraction reduction device of fracture according to claim 1, it is characterized in that two pieces of steinman pins (7) respectively with fixed bar (1) and motion bar (5) axis angle at 45, and this angle direction is opposite.

3, the automatic distraction reduction device of fracture according to claim 1 is characterized in that being equipped with on the tooth axle (3) rocking handle (4).

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