阅读说明：本技术 一种胫骨平台后外侧骨折后的内固定装置 (Internal fixation device for posterolateral fracture of tibial plateau ) 是由 张大伟 陈永锋 王华溢 孙强 王远瑞 于 2021-09-28 设计创作，主要内容包括：本发明公开了一种胫骨平台后外侧骨折后的内固定装置,包括后支柱,所述后支柱的一端连接有凸块A,所述凸块A的一端连接有中支柱,所述中支柱的一端连接有凸块B,所述凸块B的一端连接有前支柱,所述前支柱的一端连接有复位板,所述凸块A、所述凸块B与所述复位板的一侧均开设有连接孔,若干个所述连接孔的内部均设置有穿钉,所述穿钉的外圆壁面开设有两个限位孔,两个所述限位孔的位置相对应,所述穿钉的一端连接有底板,通过设置复位板,复位板利用扩大的前外侧入路,实现后外侧骨折块的理想复位,通过设置嵌钻,嵌钻向外移动时,穿过位于穿钉表面的限位孔,卡嵌在患者骨骼的内部,使穿钉相对患者骨骼的位置更加稳定而不发生晃动。(The invention discloses an internal fixation device for posterolateral fracture of tibial plateau, which comprises a rear strut, wherein one end of the rear strut is connected with a lug A, one end of the lug A is connected with a middle strut, one end of the middle strut is connected with a lug B, one end of the lug B is connected with a front strut, one end of the front strut is connected with a reset plate, connecting holes are respectively formed in one sides of the lug A, the lug B and the reset plate, through pins are respectively arranged in a plurality of connecting holes, two limit holes are formed in the excircle wall surface of each through pin, the positions of the two limit holes are corresponding, one end of each through pin is connected with a bottom plate, the reset plate realizes ideal reset of a posterolateral fracture block by utilizing enlarged anterolateral approach, and the through setting of an embedded drill passes through the limit holes on the surface of the through pins when the embedded drill moves outwards, the through-nail is embedded in the bone of the patient, so that the through-nail is more stable in position relative to the bone of the patient and does not shake.)

1. An internal fixation device for use after a posterolateral tibial plateau fracture, comprising:

a rear pillar (1), one end of the rear pillar (1) is connected with a convex block A (2), one end of the convex block A (2) is connected with a middle strut (3), one end of the middle strut (3) is connected with a convex block B (25), one end of the convex block B (25) is connected with a front pillar (5), one end of the front pillar (5) is connected with a reset plate (6), one sides of the lug A (2), the lug B (25) and the reset plate (6) are all provided with connecting holes (8), a through nail (9) is arranged inside the connecting hole (8), two limiting holes (10) are arranged on the outer circle wall surface of the through nail (9), the positions of the two limiting holes (10) are corresponding, one end of the through nail (9) is connected with a bottom plate (29), and a drilling and embedding assembly used for fixing the through nail (9) is arranged in the through nail (9).

2. The internal fixation device of claim 1, wherein the drill insert assembly comprises:

two inlay brill (13), two inlay brill (13) all set up the inside of drift bolt (9), the bottom surface that inlays brill (13) is connected with sliding plate (14), spacing groove (16) have all been seted up to both sides around sliding plate (14), one side of sliding plate (14) is connected with a plurality of sliding tooth (15), the inside of drift bolt (9) is provided with sliding ring (17), the excircle wall of sliding ring (17) is connected with a plurality of fixture block (7), the one end of sliding ring (17) is connected with limiting plate (4), fixture block (7) with sliding tooth (15) mesh mutually, the inside of drift bolt (9) is provided with and is used for restricting two inlay the sliding cavity spare of brill (13) shift position.

3. An internal fixation device for posterior lateral tibial plateau fractures according to claim 2, wherein the socket member comprises:

the sliding column (18) is arranged inside the through nail (9), a torsional hole (19) is formed in the outer circle wall surface of the sliding column (18), a sliding groove (20) is formed in the top end of the sliding column (18), a plurality of limiting strips (21) are connected inside the sliding groove (20), and the limiting strips (21) correspond to the limiting grooves (16).

4. The internal fixation device of claim 3, wherein the drill insert assembly further comprises:

the limiting column (24), the cover of limiting column (24) is established the interior round wall surface of through-nail (9), through hole (30) have been seted up to the one end of limiting column (24), the interior round wall surface cover of sliding ring (17) has been cup jointed and has been turned round post (12), the one end of turning round post (12) is passed turn round hole (19) and cup joint and be in the inside of through hole (30) to extend to the outside of limiting column (24), the outside of limiting column (24) is provided with and is used for turning round the torsion piece of turning round post (12).

5. The internal fixation device of claim 4, wherein the torsion member comprises:

the utility model provides a bolt, it establishes to perforate (26), it sets up to perforate (26) turn round the excircle wall of post (12), the strip (27) are turned round to the inside cup joint of perforation (26), the excircle wall threaded connection of drift bolt (9) has octagonal nut (23).

6. An internal fixation device for posterior lateral tibial plateau fractures according to claim 1, wherein the external circumferential wall of the nail (9) is sheathed with a grommet (22).

7. The internal fixation device for the posterior-lateral tibial plateau fracture according to claim 4, wherein one end of the limiting column (24) is provided with a plurality of fixing holes (28), and the inner threads of any two fixing holes (28) are connected with clamping columns (31).

8. The internal fixation device for the posterior-lateral tibial plateau fracture according to claim 3, wherein the inner circular wall surface of the through-nail (9) is connected with two connecting columns (11), and two ends of the two connecting columns (11) close to each other are connected with the outer circular wall surface of the sliding column (18).

Technical Field

The invention relates to the technical field of fracture postfixation, in particular to an internal fixation device for posterolateral fracture of a tibial plateau.

Background

The tibial plateau fracture morphology is complex, is the most intractable intra-articular fracture, the surrounding anatomical structure is complex, the injury of important soft tissues or vascular nerves in the operation can endanger the life of limbs, the operation difficulty is high, a simple and effective fixing treatment method is lacked for posterolateral fracture, and at present, for the internal fixation after the posterolateral fracture of the tibial plateau, the morphological characteristics of fracture blocks are researched through large sample data analysis, and a new steel plate screw internal fixing device is designed.

For example, chinese patent publication No. CN209360870U proposes a lateral tibial plateau lateral total condylar-type steel plate, in which the screw holes of the upper row of screw holes are horizontally distributed at the first lateral bending part and the middle bending part of the proximal steel plate, and the screw holes of the lower row of screw holes are horizontally distributed at the second lateral bending part and the middle bending part of the proximal steel plate, so as to fix the bone of the patient, but in the actual use process of the solution, some patients have osteoporosis, which causes the screws to loosen inside the bone and cannot be completely fixed, if the loosening or displacement is more, a secondary operation needs to be considered, which not only increases the recovery time, but also increases the economic burden of the patient.

Disclosure of Invention

The invention aims to solve the problems that the anatomical structure around the posterior lateral fracture of the tibial plateau is complex, a good exposed view field cannot be achieved frequently in the operation, and important vascular nerves or soft tissues are easily damaged in the operation and even endanger the life of limbs; meanwhile, in the prior art, some patients have osteoporosis, so that the screws are loosened in the bones and cannot be completely fixed, and the screws are unstable or shake relative to the bones of the patients, thereby providing the internal fixing device for the tibia plateau after the posterolateral fracture.

In order to achieve the purpose, the invention adopts the following technical scheme:

an internal fixation device following a posterolateral tibial plateau fracture, comprising: the back pillar, the one end of back pillar is connected with lug A, lug A's one end is connected with well pillar, the one end of well pillar is connected with lug B, lug B's one end is connected with preceding pillar, the one end of preceding pillar is connected with the board that resets, lug A lug B with the connecting hole has all been seted up to one side of the board that resets, the inside of connecting hole is provided with the drift bolt, two spacing holes have been seted up to the excircle wall of drift bolt, two the position in spacing hole is corresponding, the one end of drift bolt is connected with the bottom plate, the inside of drift bolt is provided with and is used for fixing the brill of drift bolt inlays the subassembly.

Preferably, the drill insert assembly comprises: the embedded drill is arranged inside the drift bolt, the bottom surface of the embedded drill is connected with a sliding plate, limiting grooves are formed in the front side and the rear side of the sliding plate, one side of the sliding plate is connected with a plurality of sliding teeth, a sliding ring is arranged inside the drift bolt, the outer circle wall surface of the sliding ring is connected with a plurality of clamping blocks, one end of the sliding ring is connected with a limiting plate, the clamping blocks are meshed with the sliding teeth, and a sliding cavity piece used for limiting the moving positions of the embedded drill is arranged inside the drift bolt.

Preferably, the sliding chamber member includes: the sliding column is arranged inside the through nail, a torsional hole is formed in the outer circle wall surface of the sliding column, a sliding groove is formed in the top end of the sliding column, a plurality of limiting strips are connected inside the sliding groove, and the limiting strips correspond to the limiting grooves in position.

Preferably, the drill insert assembly further comprises: the limiting column is sleeved on the inner circular wall surface of the through nail, a through hole is formed in one end of the limiting column, a torsion column is sleeved on the inner circular wall surface of the sliding ring, one end of the torsion column penetrates through the torsion hole and is sleeved inside the through hole and extends to the outside of the limiting column, and a torsion piece used for twisting the torsion column is arranged outside the limiting column.

Preferably, the torsion member includes: the perforation is arranged on the outer circle wall surface of the torsion column, the torsion strip is sleeved inside the perforation, and the outer circle wall surface of the through nail is in threaded connection with an octagonal nut.

Preferably, the outer circular wall surface of the through nail is sleeved with a backing ring.

Preferably, one end of the limiting column is provided with a plurality of fixing holes, and the inner threads of any two fixing holes are connected with clamping columns.

Preferably, the inner circular wall surface of the through nail is connected with two connecting columns, and two ends of the two connecting columns, which are close to each other, are connected with the outer circular wall surface of the sliding column.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, through arranging the reset plate, the reset plate realizes ideal reset of the posterior lateral fracture block by utilizing the expanded anterior lateral approach, avoids the risk of damaging important structures such as blood vessels, nerves and the like due to the complexity of a posterior anatomical structure when the conventional posterior lateral approach is carried out, solves the problem of poor posterior lateral fixation strength of the tibial plateau in the prior art, ensures that a screw can be driven into the posterior lateral side of the tibial plateau by avoiding a fibula tip by the flat and long reset plate, and tightly drags the posterior lateral side area of the tibial plateau in a ring dragging way, therefore, the fixing device after the tibial fracture operation has the advantages of strong compatibility and high fixation strength on the posterior lateral side of the tibial plateau, in addition, the expanded anterior lateral approach design of the reset plate plays a role in pushing and fixing the fracture block in the posterior dead zone outside the tibial plateau, and can achieve the effect of remedying the subsidence of the posterior lateral plateau, the operation procedures are reduced, the damage of nerve vessels caused in the operation process can be effectively reduced, and the plug-in design can be tightly attached to the bone surface, so that the operation is safe and reliable, and the clinical use is convenient.

2. In the invention, the embedded drill is arranged, when moving outwards, the embedded drill passes through the limiting hole on the surface of the through-nail and is clamped and embedded in the bone of a patient, at the moment, the through-nail is in threaded connection with the bone through the thread on the surface of the through-nail, the sharp end of the embedded drill pierces the inside of the bone of the patient, the position of the through-nail relative to the bone of the patient is more stable without shaking, so that the position of the through-nail relative to the bone is more stable, by arranging the two connecting columns which are connected with the sliding column and the through-nail, the sliding column is more stable in the through-nail to avoid shaking, the stability of the sliding column relative to the inner position of the through-nail is beneficial to preventing the embedded drill from deviating from the inner position of the bone of a patient, the problem that the screws are loosened and can not be completely fixed in the bones due to osteoporosis of some patients, so that the screws are unstable or shake relative to the bones of the patients is solved.

3. According to the invention, the sliding chute is arranged, the plurality of limiting strips connected inside the sliding chute are sleeved inside the limiting groove, the sliding plate is limited to slide only inside the sliding chute, the embedded drill is driven to penetrate into a bone or withdraw into the interior of the through-nail, the limiting hole formed in the surface of the through-nail corresponds to the position of the embedded drill, so that the sharp end of the embedded drill can be embedded into the bone of a patient through the limiting hole, meanwhile, the diameter of the limiting hole is smaller than that of the bottom surface of the embedded drill, and the embedded drill is limited not to penetrate out of the limiting hole and fall off when being embedded into the bone of the patient.

4. According to the invention, the torsion column is arranged, the torsion column transmits the torsion to the clamping block, the rotation of the torsion column drives the clamping block to rotate, the torsion column enables the sliding tooth meshed with the clamping block to start to move in the sliding groove, and any two of the fixing holes can be connected with the clamping column by arranging the fixing holes.

5. According to the invention, the torsion bar is arranged and sleeved in the through hole, and the force arm when the torsion bar is twisted is larger than that when the torsion column is directly twisted, so that the torsion of the torsion column is driven by twisting the torsion bar, the operation of twisting the torsion column is more labor-saving, and the contact area between the octagonal nut and the convex block A and between the convex block B and the reset plate is increased by the backing ring, so that the octagonal nut is effectively prevented from falling off from the excircle wall surface of the through nail due to looseness.

Drawings

FIG. 1 is a schematic perspective view of an internal fixation device for posterior lateral tibial plateau fractures according to the present invention;

FIG. 2 is a schematic view of a nail-piercing structure of an internal fixation device for posterior lateral tibial plateau fractures according to the present invention;

FIG. 3 is a schematic view of a connecting post structure of an internal fixation device for use after a posterior lateral tibial plateau fracture according to the present invention;

FIG. 4 is a schematic structural view of a sliding post of an internal fixation device for posterior lateral tibial plateau fractures according to the present invention;

FIG. 5 is a schematic view of a slip ring structure of an internal fixation device for posterior lateral tibial plateau fractures according to the present invention;

FIG. 6 is a schematic structural view of a stop bar of the internal fixation device for posterior lateral tibial plateau fractures according to the present invention;

fig. 7 is a schematic structural view of a torsion column of the internal fixation device for the posterior-lateral fracture of the tibial plateau provided by the invention.

In the figure: 1. a rear pillar; 2. a bump A; 3. a middle pillar; 4. a limiting plate; 5. a front pillar; 6. a reset plate; 7. a clamping block; 8. connecting holes; 9. nailing; 10. a limiting hole; 11. connecting columns; 12. twisting the column; 13. embedding a drill; 14. a sliding plate; 15. sliding the teeth; 16. a limiting groove; 17. a slip ring; 18. a traveler; 19. hole twisting; 20. a chute; 21. a limiting strip; 22. a backing ring; 23. an octagonal nut; 24. a limiting column; 25. a bump B; 26. perforating; 27. twisting the strips; 28. a fixing hole; 29. a base plate; 30. a through hole; 31. and (5) clamping the column.

Detailed Description

The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1, 2, 3, 4, 5 and 7, the internal fixation device for the posterior-lateral fracture of the tibial plateau provided by the invention comprises a posterior strut 1, wherein the posterior strut 1 is of a cylindrical structure, one end of the posterior strut 1 is fixedly provided with a convex block a2, one end of a convex block a2 is fixedly provided with a middle strut 3, the middle strut 3 is of a cylindrical structure, one end of the middle strut 3 is fixedly provided with a convex block B25, one end of the convex block B25 is fixedly provided with a front strut 5, one end of the front strut 5 is fixedly provided with a reset plate 6, one side of the convex block a2, the convex block B25 and the reset plate 6 are respectively provided with a connecting hole 8, the connecting hole 8 is a threaded hole, the inside of the connecting hole 8 is provided with a through nail 9, the through nail 9 is of a circular tube-shaped structure, the surface of the through nail 9 is provided with a thread, the outer circumferential wall surface of the through nail 9 is provided with two limit holes 10, the limit holes 10 are circular through holes, and the positions of the two limit holes 10 correspond to each other, one end fixed mounting of drift bolt 9 has bottom plate 29, bottom plate 29 is cylindrical structure, the inside of drift bolt 9 is provided with the brill that is used for fixed drift bolt 9 and inlays the subassembly, the fixed cover of interior circle wall of drift bolt 9 is equipped with spacing post 24, spacing post 24 is cylindrical structure, through hole 30 has been seted up to the one end of spacing post 24, through hole 30 is circular through-hole, the fixed cup joint of interior circle wall of sliding ring 17 has turned round post 12, it is cylindrical structure to turn round post 12, the one end of turning round post 12 passes turns round the inside of 19 movable cup joints at through hole 30 of hole, and extend to the outside of spacing post 24, the outside of spacing post 24 is provided with the piece that twists round that is used for turning round post 12, it includes perforation 26 to twist the piece, perforation 26 sets up at the excircle wall of turning round post 12, perforation 26 is circular through-hole, the fixed cup joint of the inside of perforation 26 has turned round strip 27, it is cylindrical structure to turn round strip 27.

In the embodiment, by arranging the reset plate 6, the reset plate 6 realizes ideal reset of the back and outside fracture block by utilizing the expanded front and outside approach, and avoids the risk of damaging important structures such as blood vessels, nerves and the like due to the complexity of a rear anatomical structure when the conventional back side approach is performed, when in use, a medical worker firstly sets a threaded hole on the surface of a bone of a patient, corresponds a plurality of connecting holes 8 to the threaded hole set on the bone, connects a plurality of through pins 9 to the threaded hole in the bone through a plurality of connecting holes 8 by virtue of a plurality of fixing holes 28, after the medical worker rotates the twist bar 27 to enable the embedded drill 13 to be clamped and embedded in the bone of the patient, the medical worker respectively threads two clamp columns 31 at one end of the twist bar 27, and enables the two clamp columns 31 to abut against the twist bar 27, so that the twist bar 27 can neither rotate clockwise nor anticlockwise, the embedded drill 13 in the bone of the patient is prevented from loosening due to the shaking of the twisting strip 27.

Example two

As shown in fig. 2, 3, 5, 6 and 7, based on embodiment 1, the drill insert assembly includes: two embedded drills 13, wherein the two embedded drills 13 are arranged inside a through nail 9, a sliding plate 14 is fixedly arranged on the bottom surface of the embedded drill 13, the sliding plate 14 is of a rectangular block structure, limiting grooves 16 are formed in the front side and the rear side of the sliding plate 14 respectively, the limiting grooves 16 are of a rectangular groove structure, a plurality of sliding teeth 15 are fixedly arranged on one side of the sliding plate 14, a sliding ring 17 is arranged inside the through nail 9, the sliding ring 17 is of a circular ring structure, a plurality of clamping blocks 7 are fixedly arranged on the outer circumferential wall surface of the sliding ring 17, one end of the sliding ring 17 is fixedly provided with a limiting plate 4, the limiting plate 4 is of a cylindrical structure, the clamping blocks 7 are meshed with the sliding teeth 15, a sliding cavity part for limiting the moving positions of the two embedded drills 13 is arranged inside the through nail 9, the sliding cavity part comprises a sliding column 18, the sliding column 18 is arranged inside the through nail 9, the sliding column 18 is of a cylindrical structure, a torsional hole 19 is formed in the outer circumferential wall surface of the sliding column 18, a sliding chute 20 is formed in the top end of the sliding column 18, chute 20 is the rectangle through-hole, the inside fixed mounting of chute 20 has a plurality of spacing 21, spacing 21 is the rectangular block structure, spacing 21 is corresponding with spacing 16's position, it is corresponding with the position of turning round post 12 to turn round hole 19, the excircle wall threaded connection of through-nail 9 has octagonal nut 23, the excircle wall movable sleeve of through-nail 9 is equipped with backing ring 22, backing ring 22 is the circular ring structure, octagonal nut 23 laminates with backing ring 22 mutually, a plurality of fixed orifices 28 have been seted up to spacing 24's one end, fixed orifices 28 is the screw hole, wherein the internal thread of two arbitrary fixed orifices 28 is connected with calorie post 31, the interior round wall fixed mounting of through-nail 9 has two spliced poles 11, spliced pole 11 is cylindrical structure, two spliced poles 11 both ends that are close to each other all with the excircle wall fixed mounting of sliding column 18.

In the embodiment, by arranging the limiting strip 21, the limiting strip 21 is clamped inside the limiting groove 16, the sliding plate 14 is limited to reciprocate only inside the sliding groove 20, when the embedded drill 13 moves outwards, the embedded drill passes through the limiting hole 10 on the surface of the through-drill 9 and is clamped and embedded inside the bone of the patient, so that the through-drill 9 is more stable relative to the position of the bone of the patient without shaking, the diameter of the limiting hole 10 is smaller than the diameter of the bottom surface of the embedded drill 13, the embedded drill 13 is limited not to fall off through the limiting hole 10 when moving outwards, if the patient heals or needs to take out the through-drill 9 or the fixing device after the tibia fracture operation for other reasons, the embedded drill 13 is retracted from the inside of the bone of the patient to the inside of the sliding column 18 by twisting the twisting the twisting strip 27 in the opposite direction, the octagonal nut 23 is twisted down from the outer circumferential wall of the through-drill 9, and the through-drill 9 is taken out from the inside of the connecting hole 8, thereby realizing the complete detachment of the fixing device after the tibial fracture surgery from the surface of the bone of the patient.

The working principle is as follows: through setting up the board 6 that resets, the board 6 that resets utilizes the anterolateral approach of expansion, realize that the ideal of posterolateral fracture piece resets, damage blood vessel because of the complexity of rear anatomical structure when avoiding conventional rear side approach, the risk of important structures such as nerve, when using, medical personnel set up a plurality of screw hole on the skeleton surface earlier, it is corresponding with the screw hole of seting up on connecting hole 8 and the skeleton, and with through the screw hole of connecting hole 8 threaded connection to skeleton, medical personnel at first will reset board 6 and probe into tibial plateau back outside region, make the board 6 that resets support the shin bone, the board 6 that resets is deep into the blind area and effectively fixes the skeleton, lug A2 and lug 25 are fixed at the tibial plateau this moment.

By arranging the octagonal nut 23, the octagonal nut 23 is in threaded connection with the outer circle wall surface of the through-nail 9, a worker can prevent the octagonal nut 23 from falling off from the outer circle wall surface of the through-nail 9 due to looseness by tightening the octagonal nut 23 and fixing the position of the fixing device relative to the skeleton of a patient after the tibial fracture operation by arranging the backing ring 22, the backing ring 22 increases the contact area between the octagonal nut 23 and the bump A2, the bump B25 and the reset plate 6, the octagonal nut 23 is prevented from falling off from the outer circle wall surface of the through-nail 9 due to looseness, the torsion bar 27 is fixedly sleeved inside the through-hole 26 by arranging the torsion bar 27, the torsion bar 27 is larger than the moment arm of directly twisting the torsion bar 12, the torsion bar 12 is driven to twist by the torsion bar 27, the operation of the torsion bar 12 is more labor-saving, the torsion bar 12 rotates to drive the sliding ring 17 positioned inside the sliding column 18 to rotate, by arranging the plurality of the fixture blocks 7, the fixture blocks 7 are meshed with the sliding teeth 15, when the fixture blocks 7 rotate, the slide teeth 15 are driven to move inside the sliding grooves 20, at this moment, two embedded drills 13 move towards the opposite direction through two sliding plates 14, through setting up a plurality of spacing strip 21, spacing strip 21 is corresponding with the position of a plurality of spacing groove 16, spacing strip 21 card is established in the inside of spacing groove 16, restriction sliding plate 14 can only be reciprocating motion in the inside of spout 20, embedded drill 13 when outwards moving, pass the spacing hole 10 that is located the surface of through-nail 9, the inlay card is in the inside of patient's skeleton, make the position of through-nail 9 relative patient's skeleton more stable and do not take place to rock, the diameter of spacing hole 10 is less than the bottom surface diameter of embedded drill 13, can not run through spacing hole 10 and take place to drop when restriction embedded drill 13 outwards moves.

By arranging a plurality of fixing holes 28, after the medical staff makes the embedded drill 13 clamped in the bone of the patient by rotating the torsion bar 27, the medical staff respectively threads the two clamping columns 31 at one end of the torsion bar 27, the two clamping columns 31 support the torsion bar 27, so that the torsion bar 27 can not rotate along the clockwise direction or the anticlockwise direction, the embedded drill 13 in the bone of the patient is prevented from loosening due to the shaking of the torsion bar 27, if the patient is healed or needs to take out the through-pin 9 or the fixing device after the tibia fracture operation for other reasons, by twisting the torsion bar 27 in the opposite direction, the rhinestone 13 is withdrawn from inside the patient's bone to inside the traveler 18, and the octagonal nut 23 is screwed towards the opposite direction, the octagonal nut 23 is screwed down from the excircle wall surface of the through nail 9, and the through-nail 9 is taken out from the inside of the connecting hole 8, thereby completely detaching the fixing device after the tibia fracture operation from the surface of the bone of the patient.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.