CN204734522U - Fracture of medial malleolus special use pincers that reset - Google Patents

Abstract

The utility model discloses a special reset forceps for medial malleolus fractures, which comprises a first pliers handle and a second pliers handle hinged to each other, and a lock buckle of the pliers handle is arranged near the rear end between the first pliers handle and the second pliers handle. The front end of the first pliers handle is provided with a main pliers head, the occlusal surface of the main pliers head is provided with pliers teeth, the end of the main pliers head near the pliers teeth is provided with a limit block, and the front end of the second pliers handle is provided with a first The handle and the second handle, the first handle and the second handle are provided with an auxiliary pincer head at the end away from the second pincer handle, and the occlusal surface of the auxiliary pincer head is also provided with pincer teeth. A limit block is also arranged near the end of the pliers teeth, and guide through holes extending in the axial direction are arranged in the two auxiliary pliers heads, and the two guide through holes are arranged in parallel. The special reduction forceps for medial malleolus fractures with this structure can not only prevent the teeth of the forceps from being excessively embedded in the fracture fragment and cause the fracture fragment to burst, but also provide guidance for the Kirschner wires to ensure that the two Kirschner wires are guided into the fracture fragment in parallel.

Description

Special reduction forceps for medial malleolus fracture

technical field

The utility model relates to the field of medical instruments, in particular to a special reduction forceps for medial malleolus fractures.

Background technique

Fractures of the medial malleolus are usually fixed with parallel cannulated screws as final fixation. The surgical procedure is divided into three steps: the first step is to use reduction forceps to complete the fracture reduction and maintain the reduction; the second step is to use two Kirschner wires to complete the temporary parallel fixation from the distal end to the proximal end of the fracture; the third step is to use a hollow drill Holes were drilled on the Kirschner wires, and two hollow screws were respectively screwed in to complete the final fixation of the fracture. So far, there has not been a special reduction forceps with excellent performance for medial malleolus fractures clinically. At present, point-type reduction forceps or cloth towel forceps are usually used to complete fracture reduction. The characteristics of these two types of reduction forceps are that the teeth of the forceps are very sharp and can be easily inserted into the cancellous bone of the medial malleolus. Due to the large force, the teeth of the forceps excessively penetrate into the fracture block, and the fracture block is prone to burst at this time, causing great difficulties in the reduction and fixation of the fracture. Moreover, the burst fracture fragments usually cannot complete anatomical reduction, and traumatic ankle osteoarthritis is prone to occur in the later stage, resulting in long-term ankle pain and limited mobility, which seriously affects the quality of life of patients. On the other hand, in the above-mentioned second step, the parallel fixation of the medial malleolus fracture with Kirschner wires is very important, which can realize the maximum compression of the cannulated screw in the third step and stabilize the fracture. However, at present, the Kirschner wire lacks an effective parallel guiding and positioning structure when inserting the needle. Usually, it is difficult to realize the parallel introduction of the Kirschner wire into the fracture fragment by relying on the experience of the doctor, resulting in a deviation angle in the third step of hollow screw fixation. The maximum compression of the broken end of the fracture cannot be realized, which affects the stability of the broken end of the fracture.

Utility model content

In view of this, the purpose of this utility model is to provide a special reduction forceps for medial malleolus fractures. When using it to perform medial malleolus fracture reduction surgery, it can not only prevent the teeth of the forceps from being excessively embedded in the fracture fragments and cause the fracture fragments to burst, but also give Kirschner The needle provides guidance to ensure that the two Kirschner wires are introduced into the fracture fragment in parallel.

The utility model solves the above-mentioned problems through the following technical means: a special reset forceps for medial malleolus fractures, comprising a first pliers handle and a second pliers handle hinged to each other, the first pliers handle and the second pliers handle are arranged near the rear end There is a pliers handle lock, the front end of the first pliers handle is provided with a main pliers head, the occlusal surface of the main pliers head is provided with pliers teeth, the end of the main pliers head near the pliers teeth is provided with a limit block, and the second pliers The front end of the handle is provided with a first handle and a second handle, and the end of the first handle and the second handle away from the second handle is provided with an auxiliary pliers head, and the occlusal surface of the auxiliary pliers head is also provided with a pliers A limit block is also provided on the side of the auxiliary pliers near the end of the pliers teeth, and guide through holes extending in the axial direction are arranged in the two auxiliary pliers, and the two guide through holes are arranged in parallel.

Further, both the main tongs and the auxiliary tongs are cylindrical, the limit block on the main tongs is overlaid on the main tongs and threaded with the main tongs, the limit block on the auxiliary tongs The overcoat is also threadedly connected with the auxiliary tong head on the auxiliary tong head.

Further, a soft material layer is provided on the end surface of the limit block near the jaw teeth.

Further, the second pliers handle and the first handle and the second handle are smoothly transitioned through arc surfaces.

Beneficial effects of the present utility model: the special reset forceps for medial malleolus fractures of the present utility model comprises a first pliers handle and a second pliers handle which are hinged to each other. handle lock, the front end of the first pliers handle is provided with a main pliers head, the occlusal surface of the main pliers head is provided with pliers teeth, the end of the main pliers head near the pliers teeth is provided with a limit block, and the front end of the second pliers handle A first handle and a second handle are provided, and the ends of the first handle and the second handle away from the second handle are provided with auxiliary pliers heads, and the occlusal surface of the auxiliary pliers heads is also provided with pliers teeth. A limiting block is also arranged on the side of the auxiliary pliers close to the teeth, and guide through holes extending in the axial direction are arranged in the two auxiliary pliers, and the two guide through holes are arranged in parallel. The special reduction forceps for medial malleolus fractures with this structure can not only prevent the teeth of the forceps from being excessively embedded in the fracture fragment and cause the fracture fragment to burst, but also provide guidance for the Kirschner wires to ensure that the two Kirschner wires are guided into the fracture fragment in parallel.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the connection between the main clamp head and the limit block;

Fig. 3 is a schematic diagram of the connection between the auxiliary clamp head and the limit block.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings, as shown in Figures 1-3: a special reduction forceps for medial malleolus fractures, comprising a first pincer handle 1 and a second pincer handle 2 hinged to each other, the first pincer handle Between the second pliers handle and the rear end, a pliers handle lock 3 is provided, and the front end of the first pliers handle is provided with a main pliers head 4, and the occlusal surface of the main pliers head is provided with pliers teeth 5, on the main pliers head A limit block 6 is arranged near one end of the pliers teeth, and a first handle 7 and a second handle 8 are arranged at the front end of the second pliers handle, and there is a distance between the second pliers handle and the first handle and the second handle. Through the smooth transition of the arc surface, the first handle and the second handle are provided with an auxiliary pincer head 9 at the end away from the second pincer handle, and the occlusal surface of the auxiliary pincer head is also provided with pincer teeth. Limiting blocks are also arranged at one end of the pliers teeth, and guide through holes 10 extending in the axial direction are arranged in the two auxiliary pliers heads. The two guide through holes are arranged in parallel, and the positions of the guide through holes are staggered from those of the pliers teeth. The special reduction forceps for medial malleolus fractures with this structure, when using it for fracture reduction, on the one hand, due to the setting of the limit block, the area in contact with the bone is increased, which can prevent the teeth of the forceps from excessively entering into the fracture block and avoid the fracture of the fracture block. On the other hand, by setting a pair of parallel guide through holes in the two auxiliary clamp heads, the two Kirschner wires respectively pass through different guide through holes and enter into the fracture fragment, and the guide through holes are opposite to the Kirschner wires. It plays the role of guiding and positioning, and can ensure that two Kirschner wires are introduced into the fracture block in parallel.

In the above special reduction forceps for medial malleolus fractures, the clamp handle lock is used to adjust the size of the jaws and perform clamping and locking.

As a further improvement of the above technical solution, both the main tong head and the auxiliary tong head are cylindrical, the limit block on the main tong head is overlaid on the main tong head and screwed to the main tong head, and the auxiliary tong head The limit block on the head is overcoated on the auxiliary tongs and is also threaded with the auxiliary tongs. The limit block is connected with the main tong head or the auxiliary tong head by thread connection, and the limit block can be moved along the axial direction of the main tong head or the auxiliary tong head by rotating the limit block, thereby adjusting the end face of the limit block and the tong The distance between the tips of the teeth is used to adjust the maximum depth that the forceps teeth can penetrate into the fracture block, so as to meet the needs of different patients and different conditions. After adjusting the position of the limiting block, the locking screw can be used to connect and lock the limiting block and the main tong head or the auxiliary tong head.

As a further improvement of the above technical solution, a soft material layer 11 is provided on the end surface of the limit block near the teeth of the pliers. During fracture reduction, the layer of soft material can further pinch the fracture fragment.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (4)

1. fracture of medial malleolus Special reset pincers, comprise the first clamp handle (1) and the second clamp handle (2) that are hinged, between described first clamp handle and the second clamp handle, rear end is provided with clamp handle snap close (3), it is characterized in that: described first clamp handle front end is provided with main binding clip (4), described main binding clip occlusal surface is provided with pincers tooth (5), main binding clip is provided with limited block (6) near pincers tooth one end, described second clamp handle front end is provided with first handle (7) and second handle (8), described first handle and second handle are provided with secondary binding clip (9) away from second clamp handle one end, described secondary binding clip occlusal surface is also provided with pincers tooth, secondary binding clip is also provided with limited block near pincers tooth one end, the guide through hole (10) extended vertically is provided with in two secondary binding clips, described two guide through hole be arranged in parallel.

2. fracture of medial malleolus Special reset pincers according to claim 1, it is characterized in that: described main binding clip and secondary binding clip are column type, limited block on described main binding clip to be coated on main binding clip and to be threaded with main binding clip, and the limited block on described secondary binding clip is coated on secondary binding clip and is also threaded with secondary binding clip.

3. the fracture of medial malleolus Special reset pincers according to claim 1-2 any one, is characterized in that: described limited block is provided with soft material layer (11) on pincers tooth one side end face.

4. fracture of medial malleolus Special reset according to claim 3 pincers, is characterized in that: described second clamp handle and all being smoothly transitted by cambered surface between first handle and second handle.