Bridging combined type internal fracture fixing device with self-locking function

Abstract

The utility model provides a bridging combined type fracture internal fixing device with a self-locking function, and belongs to the technical field of orthopedic fixing instruments. Comprising a bridge; the connecting element is mounted on the bridge and used for fixing the bone of the patient; the pressing plate is positioned on the bridging piece; the sliding part is mounted on the pressing plate and is in sliding connection with the pressing plate; the clamping block is located at the bottom end of the sliding piece, used for clamping and fixing the side wall of the connecting element and arranged to be in sliding connection with the bottom end of the sliding piece. The side wall of the connecting element is clamped and fixed through the clamping block, the clamping block can slide at the bottom end of the sliding piece in the direction of the connecting rod, meanwhile, the first elastic piece pushes the clamping block towards the direction of the connecting element all the time, the connecting element can be continuously and stably clamped, and the clamping effect is good. The situation that the connecting element is separated from the bridging piece is effectively avoided, the connecting stability is greatly improved, and the safety of a patient in the recovery process is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic fixation device technology, and in particular to a bridging combination internal fixation device for fractures with self-locking function. Background Technology

[0002] The bridging and modular internal fixation device is a medical device used for fracture treatment. It adopts a unique bridging and modular design concept to provide stable fixation support for the fracture site, promote fracture healing, and minimize the impact on surrounding tissues, helping patients to better recover limb function.

[0003] During the surgery, firstly, based on the anatomical morphology and fracture type of the fracture site, appropriate specifications and lengths of bridging components and corresponding combined connecting elements are selected. The bridging components are accurately placed on both sides of the fracture ends so that they span the fracture area and play a bridging and supporting role. Then, the bridging components are firmly fixed to the proximal and distal bones of the fracture using the combined connecting elements.

[0004] In the prior art, after the combined connecting element is moved to the position that needs to be fixed, screws are installed on the bridging component, and the bridging component is fixed by compression through the top of the screw (i.e., the cone cap). However, due to insufficient compression of the cone cap, the combined connecting element may detach from the bridging component during the patient's recovery process, which is detrimental to the patient's recovery and may cause secondary injury to the patient. Therefore, this application provides a bridging combined fracture internal fixation device with self-locking function to meet the needs. Utility Model Content

[0005] The technical problem this invention aims to solve is to provide a bridging combination internal fixation device for fractures with a self-locking function. This addresses the issue that in existing methods, after the combined connecting element is moved to the position requiring fixation, screws are installed on the bridging component, and the bridging component is fixed by compression through the top of the screw (i.e., the cone cap). However, due to insufficient compression of the cone cap, the combined connecting element may detach from the bridging component during the patient's recovery process, which is detrimental to the patient's recovery and may cause secondary injury to the patient.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a bridging combination internal fixation device for fractures with self-locking function, comprising: a bridging component; a connecting element installed on the bridging component for fixing the patient's bone; a pressure plate located on the bridging component; a sliding component installed on the pressure plate and slidably connected to the pressure plate; and a clamping block located at the bottom end of the sliding component for clamping and fixing the side wall of the connecting element, and configured to slidably connect to the bottom end of the sliding component.

[0007] Preferably, it further includes: a sliding groove formed at the bottom end of the sliding member; a connecting rod installed in the sliding groove for holding the block to slide in the sliding groove; and a first elastic member installed between the holding block and the side wall of the sliding groove, and configured to always push the holding block in the direction of the connecting element.

[0008] Preferably, it further includes: bolts, located at one end of the bridging member, for fixing the pressure plate to the bridging member.

[0009] Preferably, the sliding member includes a clamping sliding area and a self-sliding area. The clamping sliding area is used to clamp the block to slide along the direction of the connecting rod, and the self-sliding area is used to slide between the sliding member and the pressure plate.

[0010] Preferably, it further includes: a limiting groove, formed on the side of the pressure plate away from the bridging member; multiple sets of limiting blocks, evenly installed in the limiting groove; a through groove, formed in the self-sliding area of ​​the pressure plate; and a limiting block assembly, installed on the pressure plate and located in the self-sliding area, slidably connected to the through groove, and configured to engage with the multiple sets of limiting blocks when the sliding member slides along the pressure plate.

[0011] Preferably, the limiting block includes a locking block, a stop block, two sets of side plates, and a pull ring; the stop block is installed on the top of the locking block, the pull ring is installed on the top of the stop block, and the two sets of side plates are installed on both sides of the locking block; the stop block is used to support the limiting block to prevent the limiting block from falling out of the through slot; the pull ring is used to pull the limiting block out of the through slot; the locking block is used to engage with several sets of limiting blocks.

[0012] Preferably, the limiting block has a right-angled trapezoidal cross-section, with the right-angled side of the trapezoid close to the bolt and the shorter side above the longer side, so that when the limiting block passes through, the limiting block will lift the limiting block.

[0013] Preferably, it further includes: two sets of grooves, respectively opened on both sides of the through groove, and configured for the two sets of side plates to slide up and down in the grooves; multiple sets of second elastic members, respectively installed on the upper and lower sides of the two sets of side plates, and configured to allow the limiting block to return to the center of the groove after the limiting block moves up or down.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects: 1. In the above solution, by setting a clamping block to clamp and fix the side wall of the connecting element, and the clamping block can slide along the direction of the connecting rod at the bottom of the sliding member, while the first elastic member always pushes the clamping block towards the connecting element, the connecting element can be clamped continuously and stably, effectively avoiding the situation where the connecting element and the bridging member are separated, greatly improving the stability of the connection, and ensuring the safety of the patient's recovery process.

[0015] 2. The device incorporates a structure including a limiting groove, multiple sets of limiting blocks, a through groove, and limiting assembly blocks. The limiting assembly blocks can engage with several sets of limiting blocks, and their unique right-angled trapezoidal cross-section design allows them to be lifted during passage. The limiting assembly blocks themselves include engaging blocks, abutments, two sets of side plates, and pull rings, facilitating their operation within the through groove and their engagement with the limiting blocks. Additionally, two sets of grooves and multiple sets of secondary elastic elements ensure the limiting assembly blocks return to the center of the grooves. These designs enhance the operability and positioning accuracy of the entire device during adjustment and fixation. Compared to existing technologies relying on a single screw fixation method, this design offers greater convenience and more precise fixation and engagement between components. Attached Figure Description

[0016] Furthermore, the accompanying drawings, which form part of this specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the bridging component and connecting element in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model excluding the bridging component and connecting element;

[0020] Figure 4 This is a schematic diagram of the sliding component in this utility model;

[0021] Figure 5 This is a cross-sectional view of the sliding member and the pressure plate in this utility model;

[0022] Figure 6 This is an exploded view of the sliding component in this utility model;

[0023] Figure 7 for Figure 6 A magnified view of A in the middle.

[0024] [Figure Labels]

[0025] 1. Bridging component; 2. Connecting element; 3. Pressure plate; 4. Sliding component; 5. Clamping block; 6. Sliding groove; 7. Connecting rod; 8. First elastic element; 9. Bolt; 10. Clamping sliding area; 11. Self-sliding area; 12. Limiting groove; 13. Limiting block; 14. Through groove; 15. Limiting assembly; 16. Engaging block; 17. Abutment block; 18. Side plate; 19. Pull ring; 20. Groove; 21. Second elastic element.

[0026] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0027] The following is a detailed description of a bridging combined fracture internal fixation device with self-locking function provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0028] Example 1: As Figures 1 to 7 As shown, an embodiment of this utility model provides a bridging combination internal fixation device for fractures with a self-locking function, comprising: a bridging component 1; a connecting element 2, mounted on the bridging component 1 for fixing the patient's bone; a pressure plate 3, located on the bridging component 1; a sliding component 4, mounted on the pressure plate 3 and slidably connected to the pressure plate 3; and a clamping block 5, located at the bottom end of the sliding component 4 for clamping and fixing the side wall of the connecting element 2, and configured to slidably connect to the bottom end of the sliding component 4.

[0029] It should be noted that the bridging component 1 and the connecting element 2 include various combinations, such as single rod single hole, single rod double hole, and double rod double hole, etc., which can be selected according to the actual situation of the patient. The attached drawings of this utility model use a U-shaped rod bridging component 1 and a single threaded nail-controlled connecting element 2. The connecting element 2 is sleeved on the bridging component 1 and moved to the fracture area of ​​the patient for nail fixation. When the bridging component 1 and the connecting element 2 are changed, the components of this utility model can be changed accordingly. For example, when using a single rod bridging component 1, the pressure plate 3 is changed to a long straight plate, the sliding component 4 is changed to slide only on the long straight plate, and only one clamping block 5 is provided to complete the adaptation and fixation.

[0030] like Figures 4 to 5 As shown, it also includes: a sliding groove 6, which is formed at the bottom end of the sliding member 4; a connecting rod 7, which is installed in the sliding groove 6 and is used to hold the block 5 to slide in the sliding groove 6; and a first elastic member 8, which is installed between the holding block 5 and the side wall of the sliding groove 6 and is configured to always push the holding block 5 in the direction of the connecting element 2.

[0031] like Figure 1 As shown, it also includes: bolt 9, located at one end of the bridging member 1, used to fix the pressure plate 3 to the bridging member 1.

[0032] like Figures 3 to 7 As shown, the sliding member 4 includes a clamping sliding area 10 and a self-sliding area 11. The clamping sliding area 10 is used to clamp the block 5 to slide along the connecting rod 7, and the self-sliding area 11 is used to slide between the sliding member 4 and the pressure plate 3.

[0033] Example 2: Figure 1 and Figure 3 As shown, it also includes: a limiting groove 12, which is opened on the side of the pressure plate 3 away from the bridging member 1; multiple sets of limiting blocks 13, which are evenly installed in the limiting groove 12; a through groove 14, which is opened in the self-sliding area 11 on the pressure plate 3; and a limiting block 15, which is installed on the pressure plate 3 and located in the self-sliding area 11, and is slidably connected to the through groove 14, and is configured to engage with the limiting block 15 and the multiple sets of limiting blocks 13 when the sliding member 4 slides along the pressure plate 3.

[0034] like Figure 7 As shown, the limiting block 15 includes a locking block 16, a stop block 17, two sets of side plates 18, and a pull ring 19; the stop block 17 is installed on the top of the locking block 16, the pull ring 19 is installed on the top of the stop block 17, and the two sets of side plates 18 are installed on both sides of the locking block 16; the stop block 17 is used to support the limiting block 15 to prevent the limiting block 15 from falling out of the through groove 14; the pull ring 19 is used to pull the limiting block 15 out of the through groove 14; the locking block 16 is used to engage with several sets of limiting blocks 13.

[0035] like Figure 5 As shown, the limit block 13 has a right-angled trapezoidal cross section, with the right-angled side of the trapezoid close to the bolt 9 and the short side of the trapezoid above the long side, so that when the limit block 15 passes through, the limit block 13 will lift the limit block 15.

[0036] like Figure 7 As shown, it also includes: two sets of grooves 20, which are respectively opened on both sides of the through groove 14, and are configured to allow the two sets of side plates 18 to slide up and down in the grooves 20; multiple sets of second elastic members 21, which are respectively installed on the upper and lower sides of the two sets of side plates 18, and are configured to allow the limiting block 15 to return to the middle of the groove 20 after the limiting block 15 moves up or down.

[0037] In the above scheme, all operations for installing and fixing the bridging component 1 and the connecting element 2 are existing technologies. They are controlled by existing technologies and are well known in the field. Those who practice in this industry are already aware of them and will not be described in detail here.

[0038] The technical solution provided by this utility model selects an appropriate internal fixation device based on the patient's fracture location and specific condition. The connecting element 2 is installed on the bridging member 1, positioning it appropriately for the bone to be fixed, ensuring a good initial fit between the connecting element 2 and the bridging member 1. The pressure plate 3 is placed at a designated position on the bridging member 1 to prepare for subsequent component installation. The sliding member 4 is installed on the pressure plate 3, enabling a sliding connection between the sliding member 4 and the pressure plate 3. The clamping block 5 is installed at the bottom of the sliding member 4, allowing it to slide along the connecting rod 7 in the sliding groove 6. The first elastic member 8 is correctly installed between the clamping block 5 and the side wall of the sliding groove 6, ensuring that the first elastic member 8 always pushes the clamping block 5 towards the connecting element 2, thus creating an initial clamping posture of the clamping block 5 against the side wall of the connecting element 2, pushing the sliding member 4 to slide on the pressure plate 3. During the sliding process... In the middle: When the limiting block 15 passes the limiting block 13, due to the design of the limiting block 13 having a right-angled trapezoidal cross section with the right-angled side close to the bolt 9 and the short side of the right-angled trapezoid above the long side, the limiting block 13 will lift the limiting block 15, allowing it to pass smoothly. The limiting block 15 slides in the through groove 14, and its two side plates 18 slide up and down in the groove 20. Multiple sets of second elastic members 21 will extend and retract accordingly according to the movement of the limiting block 15, ensuring that the limiting block 15 can return to the middle of the groove 20 after movement, maintaining the stability of the overall structure. When the sliding member 4 slides to the appropriate position, the limiting block 15 will engage with several sets of limiting blocks 13, completing the positioning and fixing of the sliding member 4. The pressure plate 3 is fixed to the bridging member 1 using bolts 9, further enhancing the fixing effect of the entire device and ensuring that the relative positions between the components remain stable.

[0039] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art can fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A bridging combined internal fixation device for fractures with self-locking function, characterized in that, include: Bridging component (1); Connecting element (2), mounted on bridging element (1), is used to fix the patient's bones; Pressure plate (3) is located on bridging component (1); The sliding component (4) is mounted on the pressure plate (3) and is slidably connected to the pressure plate (3); The clamping block (5) is located at the bottom of the slider (4) and is used to clamp and fix the side wall of the connecting element (2), and is configured to slide and connect with the bottom of the slider (4).

2. The bridging combined fracture internal fixation device with self-locking function according to claim 1, characterized in that, Also includes: A sliding groove (6) is formed at the bottom end of the sliding member (4); A connecting rod (7) is installed in a sliding groove (6) to hold the block (5) to slide in the sliding groove (6); The first elastic element (8) is installed between the clamping block (5) and the side wall of the sliding groove (6), and is configured to always push the clamping block (5) in the direction of the connecting element (2).

3. The bridging combined fracture internal fixation device with self-locking function according to claim 1, characterized in that, Also includes: Bolt (9), located at one end of the bridging member (1), is used to fix the pressure plate (3) onto the bridging member (1).

4. The bridging combined fracture internal fixation device with self-locking function according to claim 2, characterized in that, The sliding member (4) includes a clamping sliding area (10) and a self-sliding area (11). The clamping sliding area (10) is used to clamp the block (5) to slide along the connecting rod (7). The self-sliding area (11) is used to slide between the sliding member (4) and the pressure plate (3).

5. The bridging combined fracture internal fixation device with self-locking function according to claim 4, characterized in that, Also includes: The limiting groove (12) is provided on the side of the pressure plate (3) away from the bridging member (1); Multiple sets of limiting blocks (13) are evenly installed in the limiting groove (12); A through groove (14) is formed in the self-sliding area (11) on the pressure plate (3); The limiting block (15) is installed on the pressure plate (3) and located in the self-sliding area (11). It is slidably connected to the through groove (14) and is configured to engage with several sets of limiting blocks (13) when the sliding member (4) slides along the pressure plate (3).

6. The bridging combined fracture internal fixation device with self-locking function according to claim 5, characterized in that, The limiting block (15) includes a locking block (16), a stop block (17), two sets of side plates (18), and a pull ring (19); the stop block (17) is installed on the top of the locking block (16), the pull ring (19) is installed on the top of the stop block (17), and the two sets of side plates (18) are installed on both sides of the locking block (16); the stop block (17) is used to support the limiting block (15) to prevent the limiting block (15) from falling out of the through groove (14); the pull ring (19) is used to pull the limiting block (15) out of the through groove (14); the locking block (16) is used to engage with several sets of limiting blocks (13).

7. The bridging combined fracture internal fixation device with self-locking function according to claim 6, characterized in that, The limiting block (13) has a right-angled trapezoidal cross section, and the right-angled side of the right-angled trapezoid is set close to the bolt (9). The short side of the right-angled trapezoid is above the long side, so that when the limiting block (15) passes through, the limiting block (13) will lift the limiting block (15).

8. The bridging combined fracture internal fixation device with self-locking function according to claim 7, characterized in that, Also includes: Two sets of grooves (20) are respectively opened on both sides of the through groove (14) and are configured to allow two sets of side plates (18) to slide up and down in the grooves (20); Multiple sets of second elastic elements (21) are installed on the upper and lower sides of the two sets of side plates (18), respectively, and are configured to return the limiting block (15) to the middle of the groove (20) after the limiting block (15) moves up or down.

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