Temporary fixing device for femoral shaft fracture incision reduction fixation

Abstract

The invention discloses a temporary fixing device for femoral shaft fracture incision reduction fixation, which comprises two fixing forceps and an adjusting plate, the number of the fixing forceps is two, the fixing forceps are connected to the adjusting plate, and the adjusting plate is provided with an adjusting groove; the fixing clamp comprises an upper clamping block and a lower clamping block, the upper clamping block and the lower clamping block are both connected to the rotating shaft, the upper portion of the lower clamping block is connected with a screw rod, the screw rod sequentially penetrates through the upper clamping block and the adjusting groove, the screw rod is connected with a nut, and the nut is arranged on the screw rod in a sleeving mode. The device has the advantages of being flexible in adjustment, stable in fixation, easy and convenient to operate and the like, displacement such as fracture extorsion and adduction can be prevented, troubles caused by poor reduction of a patient are fully reduced, and the device is suitable for temporary fixation in femoral shaft fracture incision reduction.

Description

Technical Field

[0001] The present invention relates to a temporary fixation device for open reduction and internal fixation of femoral shaft fractures, belonging to the technical field of medical devices. Background Art

[0002] Femoral shaft fractures are one of the common severe traumas clinically, mostly caused by high-energy injuries (such as traffic accidents, falls from heights, etc.). Since the femoral shaft is the longest tubular bone in the human body, undertaking important weight-bearing and movement functions, if not properly treated after fracture, it may lead to limb deformity, dysfunction or even disability. Therefore, the treatment of femoral shaft fractures usually requires surgical open reduction and internal fixation to restore the anatomical structure and mechanical stability of the bone.

[0003] In the surgical treatment of femoral shaft fractures, temporary fixation is a key step. The purpose of temporary fixation is to maintain the alignment of the fracture ends before formal internal fixation, prevent displacement of the fracture ends, and provide a stable foundation for subsequent internal fixation operations. Currently, the commonly used temporary fixation methods in clinical practice include using bone forceps, Kirschner wires or external fixators, etc. However, these methods have certain limitations:

[0004] Bone forceps: The clamping force of traditional bone forceps is limited, it is difficult to provide stable fixation in complex fractures, and the operation is inconvenient and easy to slip.

[0005] Kirschner wires: Kirschner wire fixation requires multiple punctures, which may increase the risk of soft tissue injury and infection, and the fixation strength is insufficient, making it difficult to cope with large displacements of the fracture ends.

[0006] External fixator: Although the external fixator can provide strong fixation force, its volume is large, the operation is complex, and it may affect the surgical field of view and increase the surgical difficulty.

[0007] In addition, the existing temporary fixation devices generally have problems such as inconvenient adjustment, insufficient clamping force, complex operation, etc., and it is difficult to meet the requirements of flexible adjustment and stable fixation during the operation. Especially in comminuted fractures or unstable fractures, the temporary fixation of the fracture ends is more difficult, which may lead to reduction failure or insecure internal fixation, affecting the surgical effect and the prognosis of patients.

[0008] Therefore, there is an urgent need for a temporary fixation device with simple operation, flexible adjustment and stable fixation to solve the problems existing in the prior art and improve the success rate and safety of open reduction surgery for femoral shaft fractures. The temporary fixation device of the present invention is designed based on this need, aiming to provide an efficient and reliable temporary fixation tool for clinical use. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a temporary fixing device for open reduction and fixation of femoral shaft fractures, so as to solve the problems of inconvenient adjustment, insufficient clamping force and complex operation in the prior art.

[0010] The present invention is realized through the following scheme: A temporary fixing device for open reduction and fixation of femoral shaft fractures includes fixing pliers and an adjusting plate. There are two fixing pliers, and the fixing pliers are connected to the adjusting plate. An adjusting groove is opened on the adjusting plate;

[0011] The fixing pliers include an upper clamping block and a lower clamping block. Both the upper clamping block and the lower clamping block are connected to a rotating shaft. A screw rod is connected to the upper part of the lower clamping block. The screw rod sequentially passes through the upper clamping block and the adjusting groove, and the screw rod is connected to a nut, and the nut is sleeved on the screw rod.

[0012] Two screw rods are connected to the upper part of the lower clamping block. There are two adjusting plates, and the adjusting plates are arranged side by side. The two screw rods are in fit with the positions of the adjusting plates.

[0013] The upper clamping block and the lower clamping block are L-shaped. The rotating shaft passes through the upper clamping block and the lower clamping block, and the upper clamping block and the lower clamping block rotate around the rotating shaft.

[0014] The inner sides of the upper clamping block and the lower clamping block are arc-shaped, and serrated grooves are opened on the inner sides of the upper clamping block and the lower clamping block.

[0015] Cushion layers are connected to the inner sides of the upper clamping block and the lower clamping block.

[0016] The cushion layer is one of a rubber cushion layer and a silica gel cushion layer.

[0017] The adjusting plate is strip-shaped, and the length of the adjusting plate is 20 - 30 cm.

[0018] A hinge part is connected to the lower clamping block, the hinge part is connected to the screw rod, and the bottom of the screw rod rotates around the hinge part.

[0019] A spring part is arranged between the upper clamping block and the lower clamping block. The upper end of the spring part is connected to the upper clamping block, and the lower end of the spring part is connected to the lower clamping block.

[0020] Both the upper clamping block and the lower clamping block are made of surgical-grade stainless steel.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. Flexible adjustment: Through the design of the adjusting groove and the screw rod, the position and clamping force of the fixing pliers can be flexibly adjusted to meet the needs of different fracture types and positions, ensuring the accurate alignment of the fracture ends.

[0023] 2. Stable fixation: The serrated groove and rubber / silicone cushion layer design on the inner side of the clamping block significantly enhance the clamping friction, prevent the fracture ends from shifting during the operation, and provide a stable operation basis for subsequent internal fixation.

[0024] 3. Easy to operate: The design of the hinge part and the spring part makes the opening and closing and angle adjustment of the fixing pliers more convenient, reduces the complexity of the operation during the operation, and improves the surgical efficiency.

[0025] 4. Safe and reliable: The device is made of surgical-grade stainless steel, with good biocompatibility and mechanical strength, ensuring its durability and safety during the operation.

[0026] 5. Strong adaptability: The length of the adjusting plate is adjustable (20 - 30 cm), suitable for femoral shaft fractures of different lengths. At the same time, the double-screw and double-adjusting plate design further enhances the stability and application range of the device. Brief Description of the Drawings

[0027] Figure 1 It is a three-dimensional structural schematic diagram of Embodiment 1 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0028] Figure 2 It is a three-dimensional structural schematic diagram of the using state of Embodiment 1 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0029] Figure 3 It is a partial three-dimensional structural schematic diagram of Embodiment 2 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0030] Figure 4 It is a side view structural schematic diagram of Embodiment 3 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0031] Figure 5 It is a side view structural schematic diagram of Embodiment 4 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0032] Figure 6 It is a partial front view structural schematic diagram of Embodiment 4 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0033] Figure 7 It is a three-dimensional structural schematic diagram of the using state of Embodiment 5 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0034] Figure 8 It is a top view structural schematic diagram of Embodiment 6 of the temporary fixing device for open reduction and fixation of femoral shaft fractures of the present invention.

[0035] In the figure: 100 is a fixed clamp, 110 is an upper clamping block, 111 is a serrated groove, 112 is a cushion layer, 120 is a lower clamping block, 130 is a rotating shaft, 140 is a screw rod, 150 is a hinge part, 160 is a spring part, 200 is an adjusting plate, 210 is an adjusting groove, and 300 is a femoral shaft. Detailed implementation mode

[0036] The following combines Figure 1-8 to further illustrate the present invention, but the protection scope of the present invention is not limited to the described content.

[0037] Among them, the same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific part. Moreover, the drawings are all in a very simplified form and use non-precise ratios, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0038] For clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not described in detail because they will make the present invention confused due to unnecessary details. It should be considered that in the development of any actual embodiment, a large number of implementation details must be made to achieve the specific goals of the developer. For example, according to the limitations of the relevant system or business, changing from one embodiment to another. Additionally, it should be considered that such development work may be complex and time-consuming, but it is only routine work for those skilled in the art.

[0039] Embodiment 1

[0040] Referring to Figure 1 and Figure 2 , a temporary fixing device for open reduction and internal fixation of femoral shaft fractures includes a fixed clamp 100 and an adjusting plate 200. There are two fixed clamps 100, and the fixed clamps 100 are connected to the adjusting plate 200. An adjusting groove 210 is opened on the adjusting plate 200. The adjusting plate 200 is strip-shaped, and the length of the adjusting plate 200 is 20 cm;

[0041] The fixed clamp 100 includes an upper clamping block 110 and a lower clamping block 120. Both the upper clamping block 110 and the lower clamping block 120 are made of surgical-grade stainless steel. Both the upper clamping block 110 and the lower clamping block 110 are connected to the rotating shaft 130. The upper part of the lower clamping block 120 is connected to the screw rod 140. The screw rod 140 sequentially passes through the upper clamping block 110 and the adjusting groove 210. The screw rod 140 is connected to a nut 150, and the nut 150 is sleeved on the screw rod 140.

[0042] Two screws 140 are connected to the upper part of the lower clamping block 120. There are two adjusting plates 200, which are arranged side by side, and the positions of the two screws 140 match those of the adjusting plates 200.

[0043] The upper clamping block 110 and the lower clamping block 120 are L-shaped. The rotating shaft 130 passes through the upper clamping block 110 and the lower clamping block 120, and the upper clamping block 110 and the lower clamping block 120 rotate around the rotating shaft 130.

[0044] The inner sides of the upper clamping block 110 and the lower clamping block 120 are arc-shaped, and serrated grooves 111 are formed on the inner sides of the upper clamping block 110 and the lower clamping block 120 to increase friction.

[0045] During the operation, the two fixing forceps 100 respectively clamp both sides of the femoral shaft fracture. By adjusting the positions of the screws 140 in the adjusting grooves 210, the fixing forceps 100 can accurately clamp the fracture site of the femoral shaft 300. Then, by screwing the nuts 150 onto the screws 140, accurate and stable alignment of the femoral shaft 300 is achieved, facilitating the implementation of subsequent fixation surgery.

[0046] The above temporary fixing device is applicable to intramedullary nailing for open reduction of femoral shaft fractures and open reduction and internal fixation with plate and screws for femoral shaft fractures.

[0047] Embodiment 2

[0048] Refer to Figure 3 , cushion layers 112 are connected to the inner sides of both the upper clamping block 110 and the lower clamping block 120.

[0049] The cushion layer 111 is one of a rubber cushion layer and a silicone cushion layer. The rubber cushion layer and the silicone cushion layer significantly enhance the clamping friction, prevent the fracture ends from shifting during the operation, and provide a stable operation basis for subsequent internal fixation.

[0050] The thickness of the cushion layer 112 is 2 - 3 mm, and it has good elasticity and wear resistance. Its surface can be designed to be micro-protruded or textured to further enhance friction. The cushion layer 112 is fixed to the inner side of the clamping block by an adhesive or a mechanical buckle, which is convenient for replacement and cleaning.

[0051] The cushion layer 112 can be selected from medical-grade silicone or rubber materials, which have good biocompatibility and anti-aging properties. The silicone cushion layer has high heat resistance and chemical stability and is suitable for high-temperature disinfection environments; the rubber cushion layer has better elasticity and wear resistance and is suitable for long-term use.

[0052] Embodiment 3

[0053] Refer to Figure 4, a spring part 160 is provided between the upper clamping block 110 and the lower clamping block 120. The upper end of the spring part 160 is connected to the upper clamping block 110, and the lower end of the spring part 160 is connected to the lower clamping block 120, providing elastic support to facilitate the adjustment and operation of the clamping blocks.

[0054] The spring part 160 is made of a stainless steel spring, and its elastic coefficient is designed according to the weight of the clamping block and the surgical requirements. The length of the spring part 160 is 5 - 8 cm, and the diameter is 0.5 - 1 cm, which can provide sufficient elastic support without affecting the opening and closing operation of the clamping block.

[0055] The main function of the spring part 160 is to provide elastic support, so that the clamping block maintains a certain opening and closing angle when not clamping, facilitating rapid adjustment during the operation. In addition, the spring part 160 can also reduce the fatigue of the operator during the operation and improve the surgical efficiency.

[0056] Example 4

[0057] Referring to Figure 5 and Figure 6 , a hinge part 150 is connected to the lower clamping block 120. The hinge part 150 is connected to a screw rod 140, and the bottom of the screw rod 140 rotates around the hinge part 150.

[0058] The hinge part 150 is made of stainless steel, and its structure is a spherical hinge, allowing the screw rod 140 to rotate freely within a range of ±30°. The hinge part 150 is fixed to the lower clamping block 120 by bolts to ensure its stability and durability.

[0059] Example 5

[0060] In order to be able to handle the situation of multi-segment femoral shaft fractures, referring to Figure 7 , the length of the adjusting plate 200 is 30 cm, and the rest is the same as in Example 1.

[0061] In the case of multi-segment fractures, the length of the adjusting plate 200 is increased to 30 cm, which can accommodate more fixing pliers 100. For example, for a three-segment fracture, three groups of fixing pliers 100 can be used to clamp the fracture ends respectively, and precise alignment can be achieved through the adjusting slots 210 and the screw rod 140.

[0062] The adjusting plate 200 can adopt a modular design, and multiple adjusting plates can be spliced together through connectors to adapt to a longer fracture range. In addition, the edge of the adjusting plate 200 can be designed to be serrated to facilitate rapid adjustment and fixation during the operation.

[0063] Example 6

[0064] Referring to Figure 8 , the adjusting plates in Example 1 are combined into an adjusting plate 200, and two adjusting slots 210 are opened on the adjusting plate 200 to enhance the flexibility and application range of the device.

[0065] Two parallel adjustment slots 210 are provided on the adjustment plate 200, and each adjustment slot 210 corresponds to a fixed clamp 100. This design enables the two fixed clamps 100 to be adjusted independently, which is suitable for situations where the distance between the fracture ends is relatively far or different clamping forces are required.

[0066] The adjustment plate 200 is made of high-strength stainless steel with a thickness of 3 - 5 mm to ensure its stability and durability during the operation. The surface of the adjustment plate 200 can be polished to reduce friction and resistance during the operation.

[0067] Example 7

[0068] To further improve the stability and operability of the device, scale marks 220 can be added to the adjustment plate 200. The scale marks 220 are in millimeters, which facilitates the surgeon to precisely adjust the position of the fixed clamp 100.

[0069] The scale marks 220 can help the surgeon quickly locate the position of the fixed clamp 100 and reduce the adjustment time during the operation. In addition, the scale marks 220 can also be used to record the alignment of the fracture ends and provide a reference for postoperative evaluation.

[0070] Example 8

[0071] To meet the needs of patients with different body types, adjustment plates 200 and fixed clamps 100 of various specifications can be designed. For example, the length of the adjustment plate 200 can be 15 cm, 20 cm, 25 cm, and 30 cm, and the clamping width of the fixed clamp 100 can be 3 cm, 4 cm, and 5 cm.

[0072] The design of multiple specifications enables the device to meet the needs of patients with different body types and fracture types, improving the versatility and practicality of the device. In addition, the design of multiple specifications can also reduce the frequency of device replacement during the operation and improve the surgical efficiency.

[0073] Example 9

[0074] To facilitate quick installation and disassembly during the operation, a quick connection mechanism can be designed between the adjustment plate 200 and the fixed clamp 100. For example, snap - type or magnetic - type connection methods can be adopted to enable the fixed clamp 100 to be quickly fixed on the adjustment plate 200.

[0075] The quick connection mechanism can use stainless - steel snaps or strong magnets to ensure the stability and durability of the connection. In addition, the quick connection mechanism can also be designed to be adjustable to meet the fixing requirements at different angles and positions.

[0076] Example 10

[0077] To further improve the biocompatibility and anti-infection performance of the device, an antibacterial coating can be applied to the surfaces of the fixing forceps 100 and the adjusting plate 200. The antibacterial coating can be made of silver ions or nano-titanium dioxide materials, which have good antibacterial effects and durability.

[0078] The antibacterial coating can effectively reduce the risk of intraoperative infection and improve the safety of the operation. In addition, the antibacterial coating can also reduce the difficulty of postoperative cleaning and disinfection and extend the service life of the device.

[0079] Although the technical solutions of the present invention have been described and enumerated in detail, it should be understood that for those skilled in the art, making modifications to the above embodiments or adopting equivalent alternative solutions are obvious to those skilled in the art. These modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

Claims

1. A temporary fixation device for open reduction and fixation of femoral shaft fractures, characterized in that: It comprises a fixing clamp (100) and an adjusting plate (200), wherein the fixing clamp (100) is provided with two fixing clamps (100), the fixing clamp (100) is connected to the adjusting plate (200), and the adjusting plate (200) is provided with an adjusting slot (210); The fixing clamp (100) comprises an upper clamping block (110) and a lower clamping block (120), wherein the upper clamping block (110) and the lower clamping block (110) are both connected to a rotating shaft (130), the upper part of the lower clamping block (120) is connected to a screw rod (140), the screw rod (140) passes through the upper clamping block (110) and the adjusting groove (210) in sequence, the screw rod (140) is connected to a nut (150), and the nut (150) is sleeved on the screw rod (140).

2. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to claim 1, characterized in that: The upper part of the lower clamping block (120) is connected to two screw rods (140), and there are two adjustment plates (200). The adjustment plates (200) are arranged side by side, and the two screw rods (140) are in alignment with the adjustment plates (200).

3. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to any one of claims 1 or 2, characterized in that: The upper clamping block (110) and the lower clamping block (120) are L-shaped, the rotating shaft (130) passes through the upper clamping block (110) and the lower clamping block (120), and the upper clamping block (110) and the lower clamping block (120) rotate around the rotating shaft (130).

4. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to any one of claims 1 or 2, characterized in that: The inner sides of the upper clamping block (110) and the lower clamping block (120) are arc-shaped, and the inner sides of the upper clamping block (110) and the lower clamping block (120) are provided with sawtooth grooves (111).

5. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to any one of claims 1 or 2, characterized in that: The inner sides of the upper clamping block (110) and the lower clamping block (120) are both connected to the cushion layer (112).

6. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to claim 5, characterized in that: The cushion layer (111) is one of a rubber cushion layer and a silicone cushion layer.

7. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to any one of claims 1 or 2, characterized in that: The adjustment plate (200) is in the shape of a long strip, and the length of the adjustment plate (200) is 20-30 cm.

8. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to any one of claims 1 or 2, characterized in that: The lower clamping block (120) is connected to a hinged portion (150), the hinged portion (150) is connected to the screw rod (140), and the bottom of the screw rod (140) rotates around the hinged portion (150).

9. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to any one of claims 1 or 2, characterized in that: A spring portion (160) is provided between the upper clamping block (110) and the lower clamping block (120), wherein the upper end of the spring portion (160) is connected to the upper clamping block (110), and the lower end of the spring portion (160) is connected to the lower clamping block (120).

10. The temporary fixation device for open reduction and fixation of femoral shaft fracture according to any one of claims 1 or 2, characterized in that: The upper clamping block (110) and the lower clamping block (120) are both made of surgical grade stainless steel.

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