Fracture fixator for children
By designing a child fracture fixator and using the combination of curved plates and connecting plates, flexible fixation of children's supracondylar fractures is achieved, solving the problem of inaccurate fixation in the prior art and reducing the risk of surgical complications.
Patent Information
- Application Number
- CN202510735593.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-08-15
AI Technical Summary
The lack of suitable fixation devices in the prior art for children with supracondylar fractures of the humerus is likely to lead to Volkmann ischemic muscle contracture or elbow varus deformity, and the existing fixation methods are not flexible and accurate enough.
A children's fracture fixator is designed, including a first arc-shaped fixing plate, a second arc-shaped fixing plate and a arc-shaped connecting plate. It is connected by hinges and forms a groove, and is adjusted and fixed by connecting rods and fixing ropes. Combined with the design of the magnetic surface and rubber plate, precise positioning and multi-angle adjustment are achieved.
Flexible fixation of supracondylar fractures of children is achieved, reducing the risk of surgical complications, and improving fixation accuracy and comfort.
Smart Images
Figure CN120478018A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the medical field, and in particular to a fracture fixator for children. Background Art
[0002] Supracondylar humeral fractures are fractures above the medial and lateral condyles of the distal humerus. Approximately 90% of these fractures are extension fractures, most commonly affecting children aged 5 to 12 years. Improper treatment of supracondylar humeral fractures can easily lead to Volkmann's ischemic muscle contracture or cubitus varus deformity.
[0003] Lateral humeral condyle fractures are often caused by external impacts on the elbow joint, which results in severe damage to the lateral humeral condyle bone and disruption of bone continuity. Symptoms include local swelling, pain, and limited mobility. Lateral humeral condyle fractures usually require surgical treatment with nailing, which can reduce the fracture site and internally fix it with nails, thereby promoting fracture healing.
[0004] Currently, plaster or other fixation methods are often used for fixation, but they do not adapt to the correct position. Summary of the Invention
[0005] The problem to be solved by the present invention is to provide a children's fracture fixator for fixing the patient's fracture to facilitate surgery in view of the above-mentioned deficiencies in the prior art.
[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a pediatric fracture fixator, comprising a first arc-shaped fixing plate, a second arc-shaped fixing plate and an arc-shaped connecting plate, the first arc-shaped fixing plate and the second arc-shaped fixing plate are respectively hinged at both ends of the arc-shaped connecting plate to form grooves corresponding to the arms, a connecting rod is hinged on the first arc-shaped fixing plate, a sliding groove is provided on the second arc-shaped fixing plate, a clip that can be fixed on the sliding groove is provided on the connecting rod, and a first fixing rope and a second fixing rope are respectively provided on the first arc-shaped fixing plate and the second arc-shaped fixing plate.
[0007] Furthermore, the arc-shaped connecting plate is provided with a plurality of through holes, bolts are installed on the through holes, and the bolts are connected to the direction of the groove where they extend.
[0008] Furthermore, the arc-shaped connecting plate is provided with a rectangular through-hole, the rectangular through-hole is a stepped hole, the inner wall of the rectangular through-hole is provided with a sliding groove, the first plate is a rubber plate, the four sides of the first plate respectively extend into the sliding groove, the first plate is provided with a first through-hole, the second plate is installed on the stepped surface of the stepped hole, the second plate is provided with a second through-hole corresponding to the first through-hole, and the first through-hole and the second through-hole form a surgical hole for facilitating the passage of bone screws.
[0009] Furthermore, the surface of the step surface is provided with an iron block surface, and the second plate is provided with a magnetic surface on a side corresponding to the iron block surface and is attracted to the iron block surface.
[0010] Furthermore, a third through-hole is provided on the arc-shaped connecting plate, and the third through-hole is vertically connected to the slide groove and corresponds to a plurality of slots provided on the second plate. A shaft rod is provided in the third through-hole, and a first boss and a second boss are provided at both ends of the shaft rod respectively. The first boss is located in the slide groove and corresponds to the rubber plate, and the second boss corresponds to the slot.
[0011] Furthermore, the length of the first arc-shaped fixing plate is between 5 cm and 10 cm, and the length of the second arc-shaped fixing plate is between 5 cm and 20 cm.
[0012] Furthermore, the length of the arc-shaped connecting plate is between 5 cm and 10 cm.
[0013] Furthermore, the outer diameter of the arc-shaped connecting plate is smaller than the inner diameter of the first arc-shaped fixing plate, and is smaller than the inner diameter of the second arc-shaped fixing plate.
[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention forms a groove by connecting the first arc-shaped fixing plate, the second arc-shaped fixing plate and the arc-shaped connecting plate to correspond to the supracondylar fracture of the humerus of the child, and then adjusts the position of the connecting rod to adjust the relative position of the first arc-shaped fixing plate and the second arc-shaped fixing plate to facilitate fixation during surgery, and then uses the first fixing rope and the second fixing rope to bind the arm for further fixation.
[0015] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The figure is a schematic diagram of the structure of a fracture fixator for children.
[0017] Figure 2 Schematic diagram of the structure of the first arc-shaped fixing plate.
[0018] Figure 3 Schematic diagram of the structure of the second arc-shaped fixing plate.
[0019] Figure 4 Schematic diagram of the structure of the arc connecting plate.
[0020] Figure 5 It is a structural diagram of the rectangular perforation.
[0021] Figure 6 3D is a schematic three-dimensional diagram of the first arc-shaped fixing plate.
[0022] Figure 7 3D is a schematic three-dimensional diagram of the second arc-shaped fixing plate. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below with reference to the accompanying drawings and specific embodiments:
[0024] The present invention proposes a pediatric fracture fixator, comprising a first arc-shaped fixing plate 1, a second arc-shaped fixing plate 2 and an arc-shaped connecting plate 3. The cross-sections of the first arc-shaped fixing plate 1, the second arc-shaped fixing plate 2 and the arc-shaped connecting plate 3 are all semi-arc-shaped and are provided with a variety of sizes to adapt to different patients. The first arc-shaped fixing plate 1 and the second arc-shaped fixing plate 2 are respectively hinged at both ends of the arc-shaped connecting plate 3 to form grooves corresponding to the arms. The first arc-shaped fixing plate 1 is hinged with a connecting rod 4, and the second arc-shaped fixing plate 2 is provided with a slide groove 5. The connecting rod 4 is provided with a groove that can be fixed in the slide groove 5. The clamp on it, the clamp is located in the slide groove 5, the clamp is provided with a tightening bolt, and the clamp is fixed by tightening the torsion bolt. The first arc-shaped fixing plate 1 and the second arc-shaped fixing plate 2 are respectively provided with a first fixing rope 6 and a second fixing rope 8, and the arc connecting plate 3 is provided with a mounting hole 13, and the first arc-shaped fixing plate 1 and the second arc-shaped fixing plate 2 are respectively provided with a first mounting rod 7 and a second mounting rod 9, which are respectively inserted into the mounting holes 13 so that the first arc-shaped fixing plate 1 and the second arc-shaped fixing plate 2 are connected to the arc-shaped connecting plate 3 and can swing.
[0025] The arc-shaped connecting plate 3 is provided with a plurality of through holes 11, on which bolts 10 are installed, and the bolts 10 are connected to pads 12 in the direction in which they extend into the grooves. By adjusting the positions in which the bolts 10 extend, the depths in which the bolts 10 extend into the grooves are adjusted so that the pads 12 cooperate with each other to adapt to the position of the patient's arm fracture.
[0026] The arc-shaped connecting plate 3 is provided with a rectangular through-hole 14, which is a stepped hole. The inner wall of the rectangular through-hole 14 is provided with a slide groove 15. The first plate 16 is a rubber plate. The four sides of the first plate 16 extend into the slide groove 15 respectively. The first plate 16 is provided with a first through-hole 17. The second plate 18 is installed on the stepped surface of the stepped hole. The second plate 18 is provided with a second through-hole 19 corresponding to the first through-hole 17. The first through-hole 17 and the second through-hole 19 form a convenient The surgical hole through which the bone screw passes is used to pass through the surgical hole and enter the patient's body. The first perforation 17 and the second perforation 19 are used for two-point positioning. Since the first plate 16 is a rubber plate, the angle of the bone screw can be adjusted after passing through. The number of the rectangular perforations 14 is 3, so that the angles of the bone screw passing through correspond to each other. For example, according to the bone screw puncture position, the fracture within 3 cm proximal to the line connecting the internal and external condyles of the humerus is set. At this time, the first perforation 17 and the second perforation 19 correspond to the fracture within 3 cm proximal after two-point positioning.
[0027] The surface of the step surface is provided with an iron block surface, and the second plate 18 is provided with a magnetic surface on a side corresponding to the iron block surface and attracted to the iron block surface. The magnetic surface is matched with the iron block surface to install the second plate 18 on the step surface so that the second through-hole 19 corresponds to the first through-hole 17.
[0028] A third through-hole is provided on the arc-shaped connecting plate 3, and the third through-hole is vertically connected to the slide groove 15 and corresponds to a plurality of slots 20 provided on the second plate 18. A shaft rod 23 is provided in the third through-hole, and a first boss 24 and a second boss 21 are provided at both ends of the shaft rod 23. The first boss 24 is located in the slide groove 15 and corresponds to the rubber plate, and the second boss 21 corresponds to the slot 20; when the second plate 18 is installed on the step surface, the second boss 21 is inserted into the slot 20 and pushes the first boss 24 to squeeze the rubber plate, thereby locking the first plate 16. The third through-hole has an enlarged step 22 facing the direction of the slot 20. After the step and the slot 20 wrap the second boss 21, the first plate 16 and the second plate 18 are just tightly fastened.
[0029] The length of the first arc-shaped fixing plate 1 is between 5cm and 10cm, and the length of the second arc-shaped fixing plate 2 is between 5cm and 20cm; the length of the arc-shaped connecting plate 3 is between 5cm and 10cm; the outer diameter of the arc-shaped connecting plate 3 is smaller than the inner diameter of the first arc-shaped fixing plate 1 and smaller than the inner diameter of the second arc-shaped fixing plate 2.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A fracture fixator for children, characterized by: The invention comprises a first arc-shaped fixing plate (1), a second arc-shaped fixing plate (2) and an arc-shaped connecting plate (3); the first arc-shaped fixing plate (1) and the second arc-shaped fixing plate (2) are respectively hinged at two ends of the arc-shaped connecting plate (3) to form grooves corresponding to the arms; the first arc-shaped fixing plate (1) is hinged with a connecting rod (4); the second arc-shaped fixing plate (2) is provided with a sliding groove (5); the connecting rod (4) is provided with a clamping member that can be fixed on the sliding groove (5); the first arc-shaped fixing plate (1) and the second arc-shaped fixing plate (2) are respectively provided with a first fixing rope (6) and a second fixing rope (8).
2. A pediatric fracture fixator according to claim 1, characterized in that: The arc-shaped connecting plate (3) is provided with a plurality of through holes (11), bolts (10) are installed on the through holes (11), and the bolts (10) are connected to the backing plates (12) in the direction of extending into the grooves.
3. The pediatric fracture fixator according to claim 1, characterized in that: The arc-shaped connecting plate (3) is provided with a rectangular through-hole (14), which is a stepped hole. The inner wall of the rectangular through-hole (14) is provided with a slide groove (15). The first plate (16) is a rubber plate. The four sides of the first plate (16) extend into the slide groove (15) respectively. The first plate (16) is provided with a first through-hole (17). The second plate (18) is installed on the stepped surface of the stepped hole. The second plate (18) is provided with a second through-hole (19) corresponding to the first through-hole (17). The first through-hole (17) and the second through-hole (19) form a surgical hole for facilitating the passage of bone screws.
4. The pediatric fracture fixator according to claim 3, characterized in that: The surface of the step surface is provided with an iron block surface, and the second plate (18) is provided with a magnetic surface on a side corresponding to the iron block surface and is attracted to the iron block surface.
5. The pediatric fracture fixator according to claim 4, characterized in that: A third through-hole is provided on the arc-shaped connecting plate (3), the third through-hole is vertically connected to the slide groove (15) and corresponds to a plurality of slots (20) provided on the second plate (18), a shaft (23) is provided in the third through-hole, and a first boss (24) and a second boss (21) are provided at both ends of the shaft (23), the first boss (24) is located in the slide groove (15) and corresponds to the rubber plate, and the second boss (21) corresponds to the slot (20).
6. The pediatric fracture fixator according to claim 1, characterized in that: The length of the first arc-shaped fixing plate (1) is between 5 cm and 10 cm, and the length of the second arc-shaped fixing plate (2) is between 5 cm and 20 cm.
7. The pediatric fracture fixator according to claim 1, characterized in that: The length of the arc-shaped connecting plate (3) is between 5 cm and 10 cm.
8. The pediatric fracture fixator according to claim 1, characterized in that: The outer diameter of the arc-shaped connecting plate (3) is smaller than the inner diameter of the first arc-shaped fixing plate (1) and smaller than the inner diameter of the second arc-shaped fixing plate (2).