Tibia window opener special for carrying tibia in transverse direction

Abstract

The utility model relates to the field of medical instruments, in particular to a tibia window opener special for carrying a tibia transversely, which comprises a triangular vertical plate, a side plate, a positioning hole, a first drill hole, a second drill hole and a groove. The triangular vertical plate with the upper bottom face and the lower bottom face of the equilateral triangle structure is used for positioning the tibia, the first drill holes and the second drill holes with different hole diameters are evenly formed in the surface of the triangular vertical plate in an equilateral triangle shape from inside to outside in a surrounding and penetrating mode, and three-side drill bit punching can be completed at a time; osteotomy can be conveniently and quickly completed through arrangement of drill bit hole channels, operation is easy and convenient, consumed time can be shortened by more than half of the original time, osteotomy holes designed on three sides are smaller, incisions are small, local blood supply damage can be reduced, and the grooves evenly distributed in a sawtooth shape are formed in the bottom of the triangular vertical plate and can be used for drainage and friction increasing, so that the osteotomy effect is improved. And bone growth is facilitated by increasing the roughness of the osteotomy part.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a tibial windowing device special for tibial transverse bone transport. BACKGROUND

[0002] Diabetic foot refers to foot diseases, foot ulcers and foot gangrene caused by peripheral arteriolar occlusive disease due to diabetic neuropathy, including sensory disturbance of unbranched nerve and autonomic nerve damage, lower extremity vascular disease-arteriosclerosis, skin microvascular disease and bacterial infection, which is often caused by the synergistic effect of ischemia, neuropathy and infection. Diabetic foot is the result of the combined action of multiple risk factors. The etiology of diabetic foot disease is abnormality of lower extremity distal nerve and lower extremity distal peripheral vascular disease caused by diabetes. Diabetic patients do not spontaneously develop ulcers. Transverse bone transport surgery is a new technology for treating diabetic foot. The conventional surgical method is to cut a 10*2cm bone block from the tibia and use an external fixation bracket for transverse transport to treat diabetic foot. The conventional tool is a 2-hole or 3-hole drill block cutter for cutting bone blocks. In the improved tibial transverse bone transport surgery, a 10*2cm bone block is improved into two square bone blocks with a side length of 1.0cm to 1.5cm. An external fixation bracket is used for transverse transport to treat diabetic foot. The conventional tool is a 6-hole drill block cutter. Four edges of the bone block are cut to complete the osteotomy operation.

[0003] The existing tibial windowing device special for tibial transverse bone transport usually uses 2-hole or 3-hole drill block cutters during the operation, which has a large surgical incision and causes great trauma. It is difficult to effectively and accurately control the size and shape of the bone block, and the operation is difficult. The position needs to be adjusted at any time during the operation, which may cause position loss, leading to long operation time and even surgical failure. The operation of the 6-hole drill block cutter during the operation is complicated and needs to be adjusted 4 times. The bone membrane is damaged, and the same problem of position loss and intraoperative position adjustment exists, leading to long operation time.

[0004] Therefore, the existing tibial transverse bone transport special tibial windowing device generally performs 2-hole or 3-hole osteotomy drilling in the surgical process, has a large surgical incision and trauma, is difficult to effectively and accurately control the size and shape of the osteotomy block, is difficult to operate, needs to be adjusted in position at any time during the operation, can cause position loss to result in long time consumption, and even surgical failure, the 6-hole drilling osteotomy device needs to adjust the osteotomy position 4 times in the surgical process, has large damage to the bone membrane, also has the problems of long operation time caused by osteotomy position loss and intraoperative position adjustment, the triangular vertical plate with the equilateral triangular structure arranged on the upper surface and the lower surface is used for positioning the tibia, the first drill hole and the second drill hole with different hole diameters are arranged in the equilateral triangular shape on the surface of the triangular vertical plate from the inside to the outside, the three-edge drilling can be completed at one time, the drilling hole arrangement can conveniently and quickly complete the osteotomy, the operation is simple, the time consumption can be reduced by more than half of the original time, the three-edge designed osteotomy hole is smaller, the incision is small, the local blood supply damage can be reduced, the triangular vertical plate is arranged in the non-standard triangular prism shape with the bottom triangular shape smaller than the top triangular shape, the contact area with the tibia can be reduced by reducing the bottom area to reduce the damage to the tibia, and the recesses arranged in the sawtooth shape and uniformly arranged on the bottom of the triangular vertical plate can be used for drainage and friction increase, and the roughness of the osteotomy site is increased to facilitate bone growth. Content of the utility model

[0005] In order to overcome the problems that the existing tibial transverse bone transport special tibial windowing device generally performs 2-hole or 3-hole osteotomy drilling in the surgical process, has a large surgical incision and trauma, is difficult to effectively and accurately control the size and shape of the osteotomy block, is difficult to operate, needs to be adjusted in position at any time during the operation, can cause position loss to result in long time consumption, and even surgical failure, the 6-hole drilling osteotomy device needs to adjust the osteotomy position 4 times in the surgical process, has large damage to the bone membrane, also has the problems of long operation time caused by osteotomy position loss and intraoperative position adjustment.

[0006] The technical scheme of the utility model is as follows: a tibial transverse bone transport special tibial windowing device, which comprises a triangular vertical plate, a side plate, a positioning hole, a first drill hole, a second drill hole and a recess, the upper end of the triangular vertical plate is fixedly connected with the side plate for holding and adjusting the position of the triangular vertical plate, the upper end of the triangular vertical plate is provided with the positioning hole for positioning the triangular vertical plate, the first drill hole and the second drill hole for drilling the tibia are arranged in the equilateral triangular shape from the inside to the outside around the positioning hole.

[0007] Preferably, a triangular vertical plate with equilateral triangular structures on both the top and bottom surfaces is used to position the tibia. Two drill holes of different diameters are evenly distributed around its surface in an equilateral triangular shape. This allows for simultaneous drilling with a three-sided drill bit. The arrangement of the drill holes facilitates quick and easy osteotomy, simplifying the operation and reducing the time required to more than half. The smaller osteotomy holes and incisions in the three-sided design reduce local blood supply disruption. By setting the triangular vertical plate to a non-standard triangular prism shape with a smaller bottom triangle than the top triangle, the contact area with the tibia can be reduced, thus minimizing damage to the tibia. Furthermore, the evenly distributed serrated grooves at the bottom of the triangular vertical plate can be used for drainage and increase friction, increasing the roughness of the osteotomy site and promoting bone growth.

[0008] Preferably, each side of the equilateral triangle formed by the first drill hole has eight sets of first drill holes evenly distributed, and each side of the equilateral triangle formed by the second drill hole has ten sets of second drill holes evenly distributed.

[0009] Preferably, the positioning hole, the first drill hole, and the second drill hole all extend from the upper end to the lower end of the triangular vertical plate. The triangles at the upper and lower ends of the triangular vertical plate are both equilateral triangles, and the triangular vertical plate is a non-standard triangular prism shape that is larger at the top and smaller at the bottom. The dimensions of the triangular vertical plate (1) are designed according to the actual size of the osteotomy block.

[0010] Preferably, the lower end of the triangular vertical plate is provided with grooves evenly distributed along one of its sides for guiding flow and increasing friction, and the grooves are semi-circular arc-shaped.

[0011] Preferably, multiple evenly distributed grooves make the lower end of the triangular vertical plate serrated, and the serrated structure is used to increase the friction between the plate and the tibia.

[0012] Preferably, the included angle between the triangular vertical plate and the side plate is °, and the triangular vertical plate and the side plate are integrally formed.

[0013] Preferably, the end of the side plate away from the apex of the triangular vertical plate extends in the opposite direction of the triangular vertical plate, and the diameter of the first drilled hole is smaller than that of the second drilled hole.

[0014] The beneficial effects of this utility model are:

[0015] 1. A triangular vertical plate with equilateral triangles on both the top and bottom surfaces is used to locate the tibia. Two drill holes of different diameters are evenly distributed around its surface in an equilateral triangle shape. This allows for simultaneous drilling of the three sides of the drill bit. The arrangement of the drill holes facilitates quick and easy osteotomy. The operation is simple and the time required can be reduced to more than half of the original time. The osteotomy holes are smaller due to the three-sided design, resulting in a smaller incision and reducing local blood supply disruption. By setting the triangular vertical plate to a non-standard triangular prism shape with the bottom triangle smaller than the top triangle, the contact area with the tibia can be reduced, thus reducing damage to the tibia. The evenly distributed serrated grooves at the bottom of the triangular vertical plate can be used for drainage and increase friction, increasing the roughness of the osteotomy site and promoting bone growth. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the tibial fenestrator specifically designed for transverse tibial bone transport according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the tibial fenestrator for transverse tibial bone transport according to this utility model from another angle.

[0018] Figure 3 The diagram shown is a three-dimensional structural diagram of the triangular vertical plate of the tibial fenestrator specifically designed for transverse tibial bone transport according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the triangular vertical plate of the tibial fenestrator specifically designed for transverse tibial bone transport, which is another angle of this utility model.

[0020] Explanation of reference numerals in the attached diagram: 1. Triangular vertical plate; 2. Side plate; 3. Positioning hole; 4. First drill hole; 5. Second drill hole; 6. Groove. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please see Figures 1-2This utility model provides an embodiment: a tibial fenestrator for transporting transverse tibial bones, comprising a triangular vertical plate 1, a side plate 2, a positioning hole 3, a first drill hole 4, a second drill hole 5, and a groove 6. The three upper corners of the triangular vertical plate 1 are fixedly connected to the side plate 2 for hand-held adjustment of the position of the triangular vertical plate 1. The upper middle part of the triangular vertical plate 1 is provided with a positioning hole 3 for positioning the triangular vertical plate 1. The upper end of the triangular vertical plate 1 is surrounded by the positioning hole 3 from the inside out, with the first drill hole 4 and the second drill hole 5 evenly distributed around the positioning hole 3 for drilling the tibia. The first drill hole 4 and the second drill hole 5 are both arranged in an equilateral triangle shape. The included angle between the triangular vertical plate 1 and the side plate 2 is 120°. The triangular vertical plate 1 and the side plate 2 are integrally formed. The end of the side plate 2 away from the apex of the triangular vertical plate 1 extends in the opposite direction of the triangular vertical plate 1. The diameter of the first drill hole 4 is smaller than that of the second drill hole 5.

[0023] Please see Figure 3 In this embodiment, each side of the equilateral triangle formed by the first drill hole 4 is evenly provided with eight sets of first drill holes 4, and each side of the equilateral triangle formed by the second drill hole 5 is evenly provided with ten sets of second drill holes 5. The positioning hole 3, the first drill hole 4 and the second drill hole 5 all extend from the upper end to the lower end of the triangular vertical plate 1. The triangles at the upper and lower ends of the triangular vertical plate 1 are both equilateral triangles. The triangular vertical plate 1 is a non-standard triangular prism shape that is larger at the top and smaller at the bottom.

[0024] Please see Figure 4 In this embodiment, the lower end of the triangular vertical plate 1 is provided with grooves 6 evenly distributed along one of its sides for drainage and increasing friction. The grooves 6 are semi-circular arc-shaped. The multiple sets of evenly distributed grooves 6 make the lower end of the triangular vertical plate 1 serrated. The serrated structure is used to increase the friction between the plate and the tibia.

[0025] When performing the procedure, first have the patient lie in the appropriate position and adjust their legs to a suitable position to facilitate the bone-opening operation;

[0026] Then, a bone pin is inserted at the center of the patient's tibial osteotomy block;

[0027] Next, put the osteotomy device on the bone pin, hold the side plate 2 with your hand and pick up the triangular vertical plate 1, and adjust it to the appropriate position and angle according to the osteotomy position. Pass the bone pin through the center positioning hole 3 of the triangular vertical plate 1 so that the bone pin forms a positioning effect on the center of the triangular vertical plate 1, and ensure that the smaller triangular side of the bottom area of ​​the triangular vertical plate 1 faces down and fits against the tibia.

[0028] Finally, based on the actual drilling requirements, the drill bit of the drilling tool is used to drill through the first drill hole 4 or the second drill hole 5 to drill holes on three sides, and the bone block is cut off in one go.

[0029] During the osteotomy of the patient's tibia, the groove 6 with a serrated structure at the lower end of the triangular vertical plate 1 increases friction and drainage.

[0030] Through the above steps, a triangular vertical plate 1, with both its upper and lower bases forming equilateral triangles, is used to locate the tibia. Two different equilateral triangles are evenly distributed around its surface, forming a first drill hole 4 and a second drill hole 5. This allows for simultaneous drilling with a three-sided drill bit. The drill bit arrangement facilitates quick and easy osteotomy, simplifying the operation and reducing the time required to more than half. The smaller osteotomy holes and incisions from the three-sided design minimize damage to local blood supply. Furthermore, by designing the triangular vertical plate 1 as a non-standard triangular prism with a smaller bottom triangle than the top triangle, the contact area with the tibia can be reduced, thus minimizing damage to the tibia. Furthermore, the serrated grooves 6 evenly distributed at the bottom of the triangular vertical plate 1 can be used for drainage and to increase friction, thereby increasing the roughness of the osteotomy site and promoting bone growth. This addresses the problems of existing tibial fenestration devices specifically for transverse tibial bone transport, which typically involve large surgical incisions and significant trauma during 2- or 3-hole osteotomy drilling. These devices make it difficult to effectively and precisely control the size and shape of the osteotomy pieces, and the operation is challenging, requiring constant adjustments during the procedure. This can lead to position loss, prolonged operation time, or even surgical failure. Similarly, 6-hole osteotomy devices are cumbersome to operate, requiring 4 adjustments to the osteotomy position, causing significant damage to the periosteum. They also suffer from similar problems of position loss and intraoperative adjustments, resulting in prolonged operation time.

Claims

1. A tibial fenestrator specifically for transverse tibial bone transport, comprising a triangular vertical plate (1); characterized in that: It also includes a side plate (2), a positioning hole (3), a first drill hole (4), a second drill hole (5) and a groove (6). The three corners of the upper end of the triangular vertical plate (1) are fixedly connected to a side plate (2) for hand-held adjustment of the position of the triangular vertical plate (1). The upper middle part of the triangular vertical plate (1) is provided with a positioning hole (3) for positioning the triangular vertical plate (1). The upper end of the triangular vertical plate (1) is surrounded by the positioning hole (3) and the first drill hole (4) and the second drill hole (5) are evenly distributed around the positioning hole (3) from the inside to the outside. The first drill hole (4) and the second drill hole (5) are both arranged in an equilateral triangle shape.

2. The tibial fenestrator for transverse tibial bone transport according to claim 1, characterized in that: The equilateral triangle formed by the first borehole (4) has eight sets of first boreholes (4) evenly distributed on each side, and the equilateral triangle formed by the second borehole (5) has ten sets of second boreholes (5) evenly distributed on each side.

3. A tibial fenestration device for transverse tibial bone transport according to claim 1, characterized in that: The positioning hole (3), the first drill hole (4), and the second drill hole (5) all extend from the upper end to the lower end of the triangular vertical plate (1). The triangles at the upper and lower ends of the triangular vertical plate (1) are both equilateral triangles. The triangular vertical plate (1) is a non-standard triangular prism shape with a larger upper end and a smaller lower end. The size of the triangular vertical plate (1) is designed according to the actual size of the osteotomy block.

4. A tibial fenestration device for transverse tibial bone transport according to claim 1, characterized in that: The lower end of the triangular vertical plate (1) is provided with grooves (6) evenly distributed along one of its sides for guiding flow and increasing friction. The grooves (6) are semi-circular arcs.

5. A tibial fenestration device for transverse tibial bone transport according to claim 1, characterized in that: Multiple evenly spaced grooves (6) make the lower end of the triangular vertical plate (1) serrated, and the serrated structure is used to increase the friction between the plate and the tibia.

6. A tibial fenestration device for transverse tibial bone transport according to claim 1, characterized in that: The included angle between the triangular vertical plate (1) and the side plate (2) is 120°, and the triangular vertical plate (1) and the side plate (2) are integrally formed.

7. A tibial fenestration device for transverse tibial bone transport according to claim 1, characterized in that: The side plate (2) extends away from the apex of the triangular vertical plate (1) in the opposite direction of the triangular vertical plate (1), and the diameter of the first drill hole (4) is smaller than that of the second drill hole (5).

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