Uteral nail placement guide cylinder of combined locking plate convenient for fracture of tibia lateral plateau

Abstract

The utility model discloses a sagittal nail placement guide cylinder of a combined locking plate convenient for fracture of a tibia lateral platform, which comprises a locking plate, a first guide cylinder and a second guide cylinder are sequentially arranged at the upper end and the lower end of the locking plate, a guide support is arranged on the first guide cylinder and the second guide cylinder, and a third guide cylinder is arranged at the tail end of the guide support. Implanting a sagittal pull nail through a third guide cylinder; the guide system has the advantages that the problems that an existing guide system is complex in operation, inaccurate in positioning and difficult to keep a stable guide state in the operation process, and consequently accurate placement of screws is affected are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a sagittal nail placement guide tube for a combined locking plate for facilitating fractures of the lateral tibial plateau. Background Art

[0002] In the treatment of tibial plateau fractures, fixing and stabilizing the fracture site is crucial. Tibial plateau fractures usually occur at the upper end of the tibia, involving bone damage to the tibial plateau. The treatment of such fractures usually requires precise internal fixation to promote fracture healing and restore normal knee joint function.

[0003] Currently, the treatment methods for tibial plateau fractures include open reduction and internal fixation and the use of locking plates and screw systems. To ensure the stability and correct alignment of the fracture site, surgeons need to precisely insert the screws into the fracture site. In actual operation, the direction and angle of screw placement have a significant impact on the treatment effect, so effective guiding devices are needed to improve the accuracy of the surgery.

[0004] In the prior art, although there are many guiding systems for fracture fixation, these systems often have problems such as complex operation, inaccurate positioning, or lack of adaptability. For example, some guiding systems may not be well adapted to different fracture types or fracture sites, resulting in frequent adjustments during the operation, increasing the operation time and difficulty. In addition, existing guiding systems often have difficulty maintaining a stable guiding state during the operation, thus affecting the accurate placement of screws.

[0005] In order to improve the above problems, a sagittal nail placement guide tube for a combined locking plate for facilitating fractures of the lateral tibial plateau is proposed. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a sagittal nail placement guide tube for a combined locking plate for facilitating fractures of the lateral tibial plateau in order to solve the problems that the existing guiding systems are complex in operation, inaccurate in positioning, and difficult to maintain a stable guiding state during the operation, thus affecting the accurate placement of screws.

[0007] The utility model achieves the above purpose through the following technical solutions:

[0008] A sagittal nail placement guide tube for a combined locking plate for facilitating fractures of the lateral tibial plateau includes a locking plate. A first guide tube and a second guide tube are sequentially arranged up and down at the upper end of the locking plate. A guiding bracket is arranged on the first guide tube and the second guide tube. A third guide tube is arranged at the end of the guiding bracket, and a sagittal tension nail is implanted through the third guide tube.

[0009] Further, four groups of first through-holes are formed at the upper end of the locking plate. Two groups of second through-holes are arranged at a position below the first through-holes. A third through-hole is arranged at a position below and between the two groups of second through-holes. The second first through-hole and the third through-hole are in the same vertical direction. The second first through-hole is connected to the first guiding cylinder, and the third through-hole is connected to the second guiding cylinder.

[0010] Further, the guiding bracket includes an L-shaped bracket. A connecting block is arranged at the head end of the L-shaped bracket. A locking block is connected to the outside of the connecting block by bolts. A sliding groove is formed in the upper part of the tail end of the L-shaped bracket. A moving member is arranged above the L-shaped bracket. A sliding block is arranged at the bottom of the moving member. The sliding block is adaptively connected to the sliding groove. A limiting block is arranged at the tail end of the L-shaped bracket. A U-shaped through-hole is formed in the side surface of the L-shaped bracket. A plum blossom wrench is arranged at the lower end of the moving member.

[0011] Further, two groups of first semi-circular holes are formed in the connecting block. A first limiting semi-ring is arranged in the middle of the first semi-circular hole at the lower position. Two groups of second semi-circular holes are formed in the locking block. A second limiting semi-ring is arranged in the middle of the second semi-circular hole at the lower position. The first semi-circular hole and the second semi-circular hole form a complete circle. The first limiting semi-ring and the second limiting semi-ring cooperate to clamp the outer ring of the neck end of the second guiding cylinder.

[0012] Further, the sliding groove limits the placement interval of the sagittal pull nail.

[0013] Further, a countersunk through-hole is formed in the moving member. The third guiding cylinder is placed in the countersunk through-hole. Clamping plates are arranged on both sides of the lower end of the moving member. Screw holes are formed in the clamping plates. The screw holes are adaptively connected to the plum blossom wrench.

[0014] Beneficial effects: The utility model has the following beneficial effects:

[0015] 1. The design of multiple guiding cylinders and guiding brackets makes the implantation of the sagittal pull nail more accurate, ensuring the positioning accuracy during the treatment process;

[0016] 2. The L-shaped bracket and its adjustable components allow for flexible adjustment of the position to adapt to different fracture conditions and surgical requirements;

[0017] 3. Through the design of the limiting block and the locking block, taking the first guiding cylinder and the second guiding cylinder as the benchmarks, the position of the third guiding cylinder is stabilized to avoid guiding errors during the operation;

[0018] 4. Through the cooperative design of the plum blossom wrench, the locking plate and the U-shaped through-hole, the moving position of the locking moving member can be accurately controlled to ensure the implantation accuracy of the sagittal pull nail;

[0019] 5. The frame support structure formed by the locking plate is conducive to the growth of the fracture area. The sagittal pull screw increases the axial bearing capacity. The combination of the locking plate and the sagittal pull screw forms a three-dimensional fixation structure, which is conducive to the early exercise of the flexion and extension function of the knee joint without weight-bearing for osteoporosis patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the locking plate of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the guiding bracket of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the connecting block of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of the locking block of the present utility model;

[0025] Figure 6 It is a schematic structural diagram of the second guiding cylinder of the present utility model;

[0026] Figure 7 It is a schematic structural diagram of the moving part of the present utility model.

[0027] In the figure: 10 - locking plate, 20 - first guiding cylinder, 30 - second guiding cylinder, 40 - guiding bracket, 50 - third guiding cylinder, 60 - sagittal pull screw;

[0028] 101 - first through hole, 102 - second through hole, 103 - third through hole, 301 - neck end outer ring, 401 - L-shaped bracket, 402 - connecting block, 403 - locking block, 404 - sliding groove, 405 - moving part, 406 - slider, 407 - limiting block, 408 - U-shaped through hole, 409 - plum blossom wrench, 4021 - first semi-circular hole, 4022 - first limiting semi-ring, 4031 - second semi-circular hole, 4032 - second limiting semi-ring, 4051 - counterbore through hole, 4052 - clamping plate, 4053 - screw hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0030] Combined with Figures 1 to 7The sagittal nail placement guide tube of the combined locking plate facilitating lateral tibial plateau fractures includes a locking plate 10. The frame support structure formed by the locking plate 10 is conducive to the growth of the fracture area. A first guide tube 20 and a second guide tube 30 are sequentially arranged at the upper and lower positions of the upper end of the locking plate 10. A guide bracket 40 is arranged on the first guide tube 20 and the second guide tube 30. A third guide tube 50 is arranged at the end of the guide bracket 40. A sagittal tension nail 60 is implanted through the third guide tube 50. The sagittal tension nail 60 reduces the shearing force of the screws of the locking plate 10 on the cancellous bone under the platform and avoids the occurrence of internal fixation aging.

[0031] Four groups of first through holes 101 are opened at the upper end of the locking plate 10. Two groups of second through holes 102 are arranged at the position below the first through holes 101. A third through hole 103 is arranged at the position below and between the two groups of second through holes 102. The second first through hole 101 and the third through hole 103 are in the same vertical direction. The second first through hole 101 is connected to the first guide tube 20, and the third through hole 103 is connected to the second guide tube 30.

[0032] The guide bracket 40 includes an L-shaped bracket 401. A connecting block 402 is arranged at the head end of the L-shaped bracket 401. A locking block 403 is connected to the outside of the connecting block 402 by bolts. A chute 404 is opened at the upper part of the end of the L-shaped bracket 401. A moving part 405 is arranged above the L-shaped bracket 401. A slider 406 is arranged at the bottom of the moving part 405. The slider 406 is adaptively connected to the chute 404. The cooperation between the chute 404 and the slider 406 enables the moving part 405 to be conveniently adjusted to adapt to different surgical requirements, facilitate the implantation of multiple sagittal tension nails 60, and provide higher flexibility. A limiting block 407 is arranged at the end of the L-shaped bracket 401. Through the L-shaped bracket 401 and the locking block 403, stability can be maintained when a force is applied, preventing the position of the third 50 guide tube from changing during the operation and affecting the implantation of the sagittal tension nail 60. A U-shaped through hole 408 is opened on the side of the L-shaped bracket 401. A plum blossom wrench 409 is arranged at the lower end of the moving part 405.

[0033] Two groups of first semi-circular holes 4021 are opened in the connecting block 402. A first limiting semi-ring 4022 is arranged in the middle of the first semi-circular hole 4021 at the lower position. Two groups of second semi-circular holes 4031 are opened in the locking block 403. A second limiting semi-ring 4032 is arranged in the middle of the second semi-circular hole 4031 at the lower position. The first semi-circular hole 4021 and the second semi-circular hole 4031 form a complete circle. The first limiting semi-ring 4022 and the second limiting semi-ring 4032 cooperate to clamp the outer ring 301 of the neck end of the second guide tube 30, ensuring the stable installation of the guide bracket 40 and reducing errors during the operation.

[0034] The distance between the chute 404 and the placement interval of the limiting sagittal tension nail 60.

[0035] The moving member 405 is provided with a countersunk through hole 4051, and the third guide cylinder 50 is placed in the countersunk through hole 4051. Clamping plates 4052 are arranged on both sides of the lower end of the moving member 405, and screw holes 4053 are formed in the clamping plates 4052. The screw holes 4053 are adaptively connected to the plum blossom wrench 409. By tightening the plum blossom wrench 409, the clamping plates 4052 can clamp the two side surfaces of the L-shaped bracket 401, so as to stabilize the moving member 405, facilitate the implantation of the sagittal tension screw 60 and ensure its placement accuracy.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sagittal nail guide for a joint locking plate for lateral tibial plateau fractures, characterized in that: The invention comprises a locking plate (10), wherein a first guide cylinder (20) and a second guide cylinder (30) are sequentially arranged at upper and lower positions of the upper end of the locking plate (10), a guide bracket (40) is arranged on the first guide cylinder (20) and the second guide cylinder (30), a third guide cylinder (50) is arranged at the end of the guide bracket (40), and a sagittal tension nail (60) is implanted through the third guide cylinder (50).

2. The sagittal nail guide cylinder of the combined locking plate for lateral tibial plateau fracture according to claim 1, characterized in that: Four groups of first through holes (101) are provided at the upper end of the locking plate (10), two groups of second through holes (102) are provided below the first through holes (101), a third through hole (103) is provided below the two groups of second through holes (102), the second first through hole (101) and the third through hole (103) are in the same vertical direction, the second first through hole (101) is connected to the first guide cylinder (20), and the third through hole (103) is connected to the second guide cylinder (30).

3. The sagittal nail placement guide cylinder of the combined locking plate for lateral tibial plateau fracture according to claim 1, characterized in that: The guide bracket (40) comprises an L-shaped bracket (401), a connecting block (402) is provided at the head end of the L-shaped bracket (401), a locking block (403) is connected to the outer side of the connecting block (402) by bolts, a sliding groove (404) is provided at the upper part of the end of the L-shaped bracket (401), a moving part (405) is provided above the L-shaped bracket (401), a sliding block (406) is provided at the bottom of the moving part (405), and the sliding block (406) is adaptively connected to the sliding groove (404), a limiting block (407) is provided at the end of the L-shaped bracket (401), a U-shaped through hole (408) is provided on the side of the L-shaped bracket (401), and a plum wrench (409) is provided at the lower end of the moving part (405).

4. The sagittal nail guide cylinder of the combined locking plate for lateral tibial plateau fracture according to claim 3, characterized in that: The connecting block (402) is provided with two groups of first semicircular holes (4021), and a first limiting semi-ring (4022) is provided in the middle of the first semicircular holes (4021) located at the lower position; the locking block (403) is provided with two groups of second semicircular holes (4031), and a second limiting semi-ring (4032) is provided in the middle of the second semicircular holes (4031) located at the lower position; the first semicircular holes (4021) and the second semicircular holes (4031) form a full circle, and the first limiting semi-ring (4022) and the second limiting semi-ring (4032) cooperate to clamp the neck end outer ring (301) of the second guide cylinder (30).

5. The sagittal nail guide cylinder of the combined locking plate for lateral tibial plateau fracture according to claim 3, characterized in that: The distance between the slide groove (404) and the sagittal tension pin (60) is limited.

6. The sagittal nail guide cylinder of the combined locking plate for lateral tibial plateau fracture according to claim 3, characterized in that: The movable member (405) is provided with a countersunk through hole (4051), and the third guide cylinder (50) is placed in the countersunk through hole (4051). Clamping plates (4052) are provided on both sides of the lower end of the movable member (405), and screw holes (4053) are provided on the clamping plates (4052). The screw holes (4053) are adapted to be connected with the plum wrench (409).

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