CN-122005047-A - Traction device for mandibular condyle fracture operation

Abstract

The invention relates to a traction device for mandibular condyle fracture surgery, which comprises a fixing device, a traction wire, a holding device and a skin penetrating device, wherein one end of the fixing device is fixed at a surgery position, the other end of the fixing device is connected with the traction wire, one end of the traction wire opposite to the fixing device is connected with the holding device, one end of the holding device opposite to the traction wire is connected with the skin penetrating device, and the traction wire can rotate universally relative to the fixing device.

Inventors

• XIA LIANG
• BAO JIALI
• YU WENWEN
• ZHU MIN
• XU BING

Assignees

• 上海交通大学医学院附属第九人民医院

Dates

Publication Date

20260512

Application Date

20260409

Claims (9)

1. 1. The traction device for the mandibular condyle fracture operation comprises a fixing device, a traction wire, a holding device and a skin penetrating device, wherein one end of the fixing device is fixed at an operation position, the other end of the fixing device is connected with the traction wire, one end, opposite to the fixing device, of the traction wire is connected with the holding device, one end, opposite to the traction wire, of the holding device is connected with the skin penetrating device, and the traction wire can rotate universally relative to the fixing device.
2. 2. The traction device for mandibular condyle fracture surgery of claim 1, wherein the fixing device comprises a screw whose tip is fixed at a surgical site, the head of the screw being provided with a groove, the traction wire being disposed in the groove in a manner universally rotatable in a circumferential direction of the screw head.
3. 3. The traction device for mandibular condyle fracture surgery of claim 1, wherein the skin penetrating device is provided with external threads and the inner cavity of the holding device is provided with internal threads, whereby the skin penetrating device and the holding device are detachably connected by a threaded connection.
4. 4. The traction device for mandibular condyle fracture surgery of claim 1, wherein the gripping device is rigidly connected to the traction wire.
5. 5. The traction device for mandibular condyle fracture surgery of claim 1, wherein the skin penetrating device comprises an angled structure, the angle of the angle being 15-20 °.
6. 6. The traction device for mandibular condyle fracture surgery of claim 1, wherein the traction wire is a single or multi-strand wire or a strong tension wire.
7. 7. The traction device for mandibular condyle fracture surgery of claim 6, wherein the wire comprises Ti6 ai 4V medical titanium alloy or 316L surgical grade stainless steel.
8. 8. The traction device for mandibular condyle fracture surgery of claim 1, wherein the fixation device comprises a plurality of fixation devices, the traction wire comprising a plurality of traction wires.
9. 9. The distraction device for use in a mandibular condyle fracture surgery of claim 2, wherein the screw comprises a medical cortical screw.

Description

Traction device for mandibular condyle fracture operation Technical Field The present invention relates to a surgical instrument, and more particularly to a traction device for mandibular condyle fracture surgery. Background Mandibular condyle fracture is one of the common fracture types of the oral, maxillofacial regions, commonly found in trafficking injuries, falls and violent injuries. Depending on the extent of fracture displacement and clinical symptoms, the treatment modes mainly include conservative treatment and surgical treatment. Among these, for cases of apparent displacement, dysfunction or combined bite disorders, a cut-open reduction endoprosthesis is often required. In the prior art, in order to achieve accurate reduction of the fractured bone, traction and positioning of the proximal mandibular bone segment (including the condylar process segment) are often required. Because the condyle is positioned in the temporomandibular joint area, the anatomical position is deep, the operation space is narrow, and important anatomical structures (such as facial nerve branches, blood vessels, joint capsules and the like) are distributed around the condyle, the traction and control of the fracture section in the operation are difficult. The traction and resetting modes commonly used at present mainly comprise the following types: The manual traction mode is that the mandible ascending branch or the fracture section is directly clamped by bone holding forceps, such as Kocher forceps, bone grasping forceps and the like in the operation, and is subjected to traction and reduction. The basic structure is a pair of pliers bodies with tooth-shaped clamping ends, and the clamping and traction are realized by applying torque through the handles. The bone face clamping forceps have the structural relationship that the front end of the forceps body clamps the bone face, the middle part of the forceps body transmits traction force, and the handle part is manually controlled by an operator. The operation process comprises exposing fracture area, clamping mandibular ascending branch or fracture section with bone holding forceps, manually pulling to adjust fracture section position, and fixing under traction state. The defect is that the fracture end is small/fragile or the clamping force is overlarge in the clamping process, so that secondary fracture is caused, and the accurate reduction of the operation is affected. The open retractor or the bite pad is used for assisting in resetting, and the open retractor or the bite pad is used for indirectly influencing the condylar process position by changing the opening and closing state of the lower jaw, so that the resetting is assisted. The structure comprises an intraoral support device, an interjaw support point and a force transmission path (dentition-mandible-condylar process). The disadvantage is that the position of the retractor or bite pad needs to be adjusted repeatedly to meet the need for achieving the surgical effect. The percutaneous traction auxiliary mode adopts a percutaneous traction needle for auxiliary reduction, cuts the skin of a submaxillary region, and is blunt-separated to the surface of a mandible, a temporary titanium nail is implanted into the mandible as a traction point, a traction wire is connected, and the position of the distal end of a mandible fracture end is further adjusted by clamping the traction wire, so that the fracture of a condyle fracture achieves operation reduction. The method has the defects that an operation incision is additionally prepared, operation wound and operation time are increased, in addition, no finished traction device is needed at present, the operation time is greatly prolonged due to the fact that the finished traction device is manufactured on site in operation, and certain technical sensitivity exists. Although the prior art has the technical means of manual traction, auxiliary reduction of an opening retractor or an occlusal pad, auxiliary reduction of percutaneous traction and the like aiming at the mandibular condyle fracture operation, the prior art still has the following defects in clinical application: Unstable traction action point and insufficient resetting precision In the prior art, no matter the bone holding forceps directly hold the mandible ascending branch or the fracture section or carry out auxiliary traction through the temporary titanium nails and the traction wires, the traction action points are selected temporarily in the operation, and the stable and standardized traction support points are lacked. Especially in the condyle fracture, the fracture broken end is usually smaller, and the local anatomical position is deeper, so that the traction force transmission path is unstable, and the moving direction and the resetting position of the fracture section are difficult to continuously and accurately control, thereby influencing the operation resetting precision. The method is character