CN106236162B - Condylar sagittal fracture surgical distractor - Google Patents

Abstract

The condyle sagittal fracture operation spreader comprises a pair of subsidiary plier bodies which are respectively positioned on two sides and are mutually hinged, wherein each subsidiary plier body comprises a handle and a plier head, the head parts of the plier heads of the two subsidiary plier bodies are all bent downwards, and the condyle sagittal fracture operation spreader is characterized in that a vertical groove is arranged on the outer side of the downward bent part of the plier head of one subsidiary plier body. Compared with the prior art, the invention has the advantage of ensuring that the jaw can obtain stable support on the nail.

Description

Condylar sagittal fracture surgical distractor

Technical field:

The present invention relates to a medical instrument.

Background technique:

Condylar sagittal fracture spreader is that when the operator grasps the clamp handle, the front end of the spreader will be opened. During the medical process, during the operation of condylar fracture, due to the surgical incision, local muscle traction and local neurovascular restriction, the operation is difficult. Because the area is small, doctors often use it to open the operation area to reduce and fix the bone fragments in the operation area. In some cases in the actual medical process, the front end of the opener often cannot be supported at the fracture end to open the operation area. At this time, it is necessary to establish a support at the fracture end. The material used to establish the support is generally a nail, which is determined by the original structure of the condyle sagittal fracture spreader, and the forceps head at the front end of the spreader is easy to slip on the nail. , resulting in the jaws not being able to obtain stable support on the nails to spread the surgical field.

The purpose of this study is to develop a surgical instrument that can successfully open the surgical operating space in condylar fracture surgery. Surgical treatment of unilateral or bilateral condylar fractures in adults with displacement of fracture fragments (sagittal fractures A, B, mid-low fractures) and limited mouth opening or occlusal disorder, and reduce the fracture fragments , restore the height of the ascending ramus of the mandible and make strong internal fixation. Because the mandibular condyle is pulled by the masseter, medial pterygoid muscle and other levator muscles, the mandibular ascending ramus is raised upward, and the condyle fragment is stretched by the lateral pterygoid muscle, which is often displaced or even dislocated in front of the ascending ramus. Outside the articular fossa, the gap at the fracture end is narrow, and the narrow operating space during the operation brings great inconvenience to the surgical operation. Therefore, the author is committed to developing the shape of the ascending ramus and condyle of the human mandible. In condylar fracture surgery A spreader that can effectively open the surgical space

Invention content:

The purpose of the present invention is to provide a condylar sagittal fracture surgical distractor that can ensure stable support of the distractor on the nails and the temporomandibular joint fossa, and effectively distract the operating area of the condylar sagittal fracture operation.

The present invention is realized in this way, including a pair of sub-clamp bodies located on two sides and hinged together with each other, the sub-clamp body includes a handle and a front end, and the heads of the front ends of the two sub-clamp bodies are bent downward, especially A vertical groove is provided on the outer side of the downwardly bent portion at the front end of one of the forceps bodies.

The front end of the other sub-clamp body is inclined.

When in use, the front end of the spreader of the present invention is extended into the operation area, and the bent part with the groove is placed against the artificially set support of the stump of the condyle of the ascending branch of the mandible, so that the artificially set nail support is stuck in the groove. In the groove, the other end with the inclined surface extends into the joint socket, so that it is supported on the joint socket, so that the front end of the spreader can obtain stable support on the nail and the joint socket, and the operation area is opened.

Here, a protruding portion is provided on the outer side of the downwardly bent portion of the front end of one of the forceps bodies. Since the outer diameter of the nail head is larger than the nail body when the nail is used to establish the support, the protruding part is used, the nail body is embedded in the groove of the protruding part, and the nail head of the nail is located on the top of the protruding part. In this way, because the diameter of the nail head is larger than that of the nail body, the nail body cannot be inserted into the groove. The other forceps body is at least 5mm longer than one of the forceps bodies, so that it can be inserted into the joint socket conveniently.

Compared with the prior art, the present invention has the advantages that the jaws can obtain stable support on the nail and can effectively resist the force of local muscle pulling to open the operation area.

Description of drawings:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the top view of the present invention;

FIG. 3 is a view from the direction A of FIG. 1 .

Detailed ways:

The present invention is now described in further detail in conjunction with the accompanying drawings and embodiments:

As shown in the figure, it includes a pair of sub-forceps bodies 1 located on both sides and hinged to each other. The sub-forceps bodies 1 include a handle 1a and a front end 1b. The heads of the front ends 1b of the two sub-forceps bodies 1 are bent downward , a positioning rack 2 passing through the handle 1a of the other pliers body 1 is oscillated on the handle 1a of one of the pliers bodies 1, and the positioning rack 2 is ensured to be stuck in the hole of the handle 1a of the other pliers body 1 The clamping block 3, the opening angle of the mouth opening pliers is fixed by the clamping block 3 and the rack 2, as shown in FIG. The outer side is provided with a vertical groove 1d.

As shown in FIG. 1 , a protruding portion 1f is provided on the outer side of the end of the downwardly bent portion 1c of the forceps head 1b of one of the forceps body 1 .

As shown in FIG. 1 , the inner side of the downwardly bent portion 1c of the forceps head 1b of the two forceps bodies 1 is a vertical plane that is parallel to each other, and the outer side is an inclined surface. The portion of the bent portion 1c above the protruding portion 1f is tapered, and the downwardly bent portion 1c of the front end 1b of the other forceps body 1 is tapered, so as to be smoothly inserted into the fracture end gap.

The downwardly bent head of the front end 1b of the other forceps body 1 is at least 3 mm longer than the downwardly bent head of the front end 1b of one of the forceps bodies (5 mm in the embodiment).

Claims (2)

1. A surgical spreader for sagittal fractures of the condyle, comprising a pair of tweezers that are located on both sides and hinged to each other, the tweezers include a handle and a front end, and the heads of the tweezers of the two tweezers are downward. Bending, swinging on the handle of one of the tongs body is provided with a positioning rack passing through the handle of the other tongs body and a clamping block to ensure that the positioning rack is caught in the handle hole of the other tongs body, its characteristics are: A vertical groove is provided on the outer side of the downwardly bent part of the pliers head of one of the pliers body, and the outer side of the end of the downwardly bent part of the pliers head of one of the pliers body is provided with a protruding part, and the two The inner side of the downwardly bent part of the pliers head of the pliers body is a vertical plane parallel to each other, wherein the part of the downwardly bent part of the pliers head of one pliers body located above the protruding part is tapered, and the other part is in the shape of a cone. The downward bending part of the forceps head of the forceps body is tapered. 2 . The condyle sagittal fracture surgical spreader according to claim 1 , wherein the downwardly bent head of the front end of the other forceps body is more than the downwardly bent head of the front end of one of the forceps body. 3 . Minister at least 3mm.

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