CN205307079U - Novel fixing device of knee joint posterior cruciate ligament shin bone stop avulsion fracture - Google Patents

Abstract

The utility model provides a new fixation device for avulsion fracture of posterior cruciate ligament tibial insertion of knee joint, belongs to the technical field of orthopedic medical equipment, and aims to solve the existing avulsion fracture of posterior cruciate ligament tibial insertion of knee joint Long-term plaster fixation is required after the operation, and there is a problem of fracture. The main body of the fixed bone plate it adopts is an I-shaped fixed bone plate with an S-shaped curved plate surface. Several countersunk screw holes for fixing screws are respectively made on the main body of the fixed bone plate. The top of the large end of the I-shaped plate surface is horizontally arranged with 2-4 through holes for connecting ligaments. Its structure is simple and practical, no gypsum fixation is required after operation, it is safe and convenient to use, and it is suitable for the strong fixation of the avulsion fracture of the tibial insertion of the posterior cruciate ligament of the knee joint and the repair and reconstruction of the ligament.

Description

A new fixation device for avulsion fractures of the posterior cruciate ligament of the knee

technical field

The utility model belongs to the technical field of orthopedic medical instruments and relates to a fixation device for avulsion fracture of the posterior cruciate ligament of the knee joint.

Background technique

With the increasing development of medical equipment and the continuous improvement of people's living standards, the technical requirements for human tibial plateau fracture fixation devices are also getting higher and higher. In the known technology, the existing human tibial plateau fracture fixation devices mainly use rivets, steel wires, hollow nails + spacers, T-shaped bone plate fixation, etc. The first three fixation methods are not firm, and patients need plaster fixation after surgery. and T-shaped bone plate fixation often needs to be bent and shaped during the operation, which reduces the self-strength of the bone plate and has the possibility of breaking, which brings inconvenience to the patient. It is also urgent to develop a novel fixation device for the avulsion fracture of the tibial insertion of the posterior cruciate ligament of the knee joint.

Utility model content

In order to overcome the deficiencies of the prior art and solve the problem of long-term plaster fixation and fracture in the existing posterior cruciate ligament tibial insertion avulsion fracture of the knee joint. The purpose of this utility model is to provide a simple and practical structure, no need for plaster fixation after surgery, no risk of fracture, suitable for strong fixation of posterior cruciate ligament tibial insertion fractures of the knee joint and repair and reconstruction of ligaments to restore fracture stability Sex, avoid the occurrence of postoperative joint stiffness, and use a safe and convenient new tibial plateau fracture fixation device.

The technical solution adopted by the utility model to solve the above problems is:

A new fixation device for the avulsion fracture of the tibial insertion of the posterior cruciate ligament of the knee joint. It is provided with: a fixed bone plate main body and a fixed screw. The main body of the fixed bone plate is respectively made with several countersunk screw holes for fixing screws, and 2-4 through holes for connecting ligaments are arranged horizontally on the top of the large end of the I-shaped plate surface of the main body of the fixed bone plate .

The above-mentioned novel fixation device for the avulsion fracture of the posterior cruciate ligament tibial insertion point of the knee joint, the small head end of the I-shaped plate surface of the main body of the fixed bone plate is made with 2-3 horizontally arranged, and the big head end is made with 3-4 1-2 horizontally arranged, the middle part of the board surface is shaped on 1-2 longitudinally arranged, is vertically 3-5 row altogether, altogether 6-9 countersunk screw holes of adorning and connecting fixing screws.

In the new fixation device for the avulsion fracture of the tibial insertion of the posterior cruciate ligament of the knee joint, the countersunk screw holes arranged longitudinally in the middle of the main body plate of the fixation bone plate are gourd-shaped adjustable countersunk screw holes.

In the new fixation device for the avulsion fracture of the tibial insertion of the posterior cruciate ligament of the knee joint, the main body of the fixed bone plate is a twisted surface-shaped fixed bone plate body that matches the natural shape of the human tibia.

The above new fixation device for the avulsion fracture of the posterior cruciate ligament of the knee joint tibial insertion, the fixation screws attached to the end of the small head of the I-shaped plate surface of the main body of the fixation bone plate and the fixation screws arranged longitudinally in the middle of the plate surface It is a triangular connection structure.

When the utility model is in use, according to the design requirements, the main body of the fixed bone plate matching the patient's tibia is produced. During the operation, after the main body of the fixed bone plate of the present invention is directly placed, the fixing screws are installed and then sutured. In particular, the countersunk screw holes at the end of the small head and the fixed screws connected to any countersunk screw holes arranged longitudinally in the middle of the plate are triangular; Strengthen the stability of the posterior cruciate ligament, maintain the tension of the posterior cruciate ligament after functional reconstruction, and restore the anatomical stability of the knee joint.

Because the design of the utility model adopts the above-mentioned technical scheme, it effectively solves the problem that the existing tibial plateau fracture fixation device needs long-term plaster fixation after operation and has fractures. After several actual clinical trials, the trial results show that compared with the existing technology, it has a simple and practical structure, does not need plaster fixation after surgery, does not have the risk of breaking, avoids bending and shaping of the bone plate device, and retains the bone plate The strength of the device, and the advantages of safety and convenience, are suitable for the strong fixation of the avulsion fracture of the tibial insertion of the posterior cruciate ligament of the knee joint and the repair and reconstruction of the ligament.

Description of drawings

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

Fig. 1 is the structural diagram of the utility model embodiment.

FIG. 2 is a top view of the embodiment of the fixed bone plate main body 1 in FIG. 1 .

In the accompanying drawings, each label is: 1. The main body of the fixed bone plate; 2. The through hole for connecting the ligament; 4. The triangular connection structure; 3. The fixing screw; 5. The ligament;

detailed description

As shown in the accompanying drawings 1-2, the utility model is provided with: a fixed bone plate main body 1, a fixed screw 3, the fixed bone plate main body 1 is an I-shaped, S-shaped curved plate surface fixed bone plate main body, in The small end of the main body of the fixed bone plate (i.e. the rear part of the bone plate body) has 3 transverse arrangements, and the large end part (i.e. the front part of the bone plate body) has 4 transverse arrangements. There are 2 longitudinally arranged countersunk screw holes 6 arranged in the middle, a total of 4 longitudinal rows, and a total of 9 countersunk screw holes 6 for connecting fixing screws 3. The connecting lines of the center of the screw holes are arranged in a triangular structure, and three through holes 2 for attaching ligaments 5 are arranged horizontally on the top of the large end of the I-shaped plate surface of the fixed bone plate main body 1 .

Referring to accompanying drawing 2, the fixed screw of the fixed bone plate main body 1 of the present embodiment, which is attached to the end of the small head of the I-shaped plate surface, and the fixed screws arranged longitudinally in the middle of the plate surface have a triangular connection structure 4 . This structure further strengthens the solidity between the bone and the bone plate, and effectively prevents the pull-out of the internal fixation device caused by early functional exercise.

Claims (6)

1. A novel fixation device for knee joint posterior cruciate ligament tibial insertion avulsion fracture, it is provided with fixed bone plate main body, fixation screw (3), it is characterized in that, fixed bone plate main body is I-shaped, S-shaped curved The main body of the fixed bone plate (1) on the surface of the plate is respectively made with several countersunk screw holes (6) for fitting the fixed screws (3), and the main body of the fixed bone plate (1) The top of the large end of the I-shaped plate surface is horizontally arranged with 2-4 through holes (2) for adorning the ligaments (5). 2. according to the novel fixation device of the avulsion fracture of the posterior cruciate ligament tibial insertion point of the knee joint according to claim 1, it is characterized in that, the small end portion of the I-shaped plate surface of the fixed bone plate main body (1) is shaped on 2-3 3-4 horizontal arrangements, 3-4 horizontal arrangements at the end of the big head, 1-2 longitudinal arrangements at the middle of the board, a total of 3-5 vertical rows, and a total of 6-9 sinks for mounting and connecting fixing screws (3). head screw holes (6). 3. According to claim 1 or 2, the novel fixation device for the avulsion fracture of the posterior cruciate ligament of the knee joint tibial insertion is characterized in that the countersunk screw holes (6) arranged longitudinally in the middle part of the body plate of the fixed bone plate main body (1) It is a gourd-shaped adjustable countersunk screw hole. 4. The novel fixation device for the avulsion fracture of the posterior cruciate ligament of the knee joint according to claim 1, wherein the fixed bone plate main body 1 is a twisted surface that matches the natural shape of the tibia of the human body. board body. 5. according to the novel fixing device of the described knee joint posterior cruciate ligament tibial insertion avulsion fracture of claim 1, it is characterized in that, the 2-3 holes in the through hole (2) of the ligament (5) are equipped with the ligament (5). 6. according to the novel fixation device of the avulsion fracture of the posterior cruciate ligament tibial insertion point of the knee joint according to claim 1, it is characterized in that, the fixing screw that the small head end of the I-shaped plate surface of the bone plate main body (1) is fixed The fixing screw arranged vertically with the middle part of the panel is a triangular connection structure (4).