A combination bone plate

Abstract

The utility model relates to medical apparatus and discloses a combined bone plate, including rib bone plate and two embrace arms of installation on rib bone plate, through the mutual matching of first fixed hole, second fixed hole, first bone screw and two embrace arms, can adjust the interval of embrace arm in advance according to the condition of rib fracture of patient before implanting in the patient's body, after adjusting to the appropriate state, implements fixed mounting operation again, thereby avoid the tedious process of secondary adjustment in the patient's body, the simple structure, convenient operation, strong practicality, through the mutual matching of positioning hole, locating block, first bone screw and two embrace arms, only need to insert locating block into positioning hole in the adjustment process, then can complete fixation by installing first bone screw again, it is worth mentioning that, the whole adjustment and fixing process can be completed in the patient's body, improves the convenience and safety of operation operation.

Description

Technical Field

[0001] This utility model relates to medical devices, specifically a combined bone plate. Background Technology

[0002] The ribs are bones that protect organs such as the lungs, heart, and liver, and form the framework of the entire thoracic cavity. Rib fractures, located in the chest wall and adjacent to vital organs, pose a significant risk to health. During orthopedic trauma surgery, rib plates made of shape memory alloy are typically used to fix the broken rib. The plates are then surgically removed after the fracture has healed. These rib plates have paired circumferential arms that form an open ring structure. During implantation and removal, the openings between the paired circumferential arms of the rib plate must be kept open. In clinical practice, rib plates are often used in conjunction with bone screws.

[0003] The patent with publication number CN219720834U discloses a rib bone plate, which is made of shape memory alloy material. It includes a main bone plate and multiple pairs of circumferential arms disposed on the main bone plate. Each pair of circumferential arms includes two circumferential arms symmetrically arranged relative to the main bone plate. The upper ends of the two circumferential arms are integrally connected to the two side edges of the main bone plate. The feature is that: a spreading clamping block is provided on the outer wall of the connection between the upper part of each circumferential arm and the main bone plate, and the two spreading clamping blocks on each pair of circumferential arms are arranged opposite to each other.

[0004] The aforementioned device still has the following drawbacks: Currently, most rib plates on the market adopt an integrated molding design. Although the curvature can be adjusted to adapt to a certain range of rib shapes, it lacks the function of adjusting the spacing of the opposing double-ring arms. This design flaw limits the adaptability of the device and the flexibility of clinical operation when dealing with clinical scenarios where the rib fracture ends are complex and the fracture line direction is varied. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a modular bone plate that allows for external adjustment of the spacing between the opposing double-ring arms based on the fracture condition.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined bone plate, comprising a rib bone plate and two circumferential arms mounted on the rib bone plate, wherein the upper end of the rib bone plate is provided with a plurality of evenly distributed first fixing holes, and the upper ends of the two circumferential arms are provided with second fixing holes, wherein a first bone screw is threaded into the two first fixing holes, the first bone screw being a short bone screw, and a second bone screw is threaded into the remaining first fixing holes.

[0007] Furthermore, multiple sets of parallel positioning holes are provided on both the front and rear sides of the rib plate, and positioning blocks are slidably connected in two sets of positioning holes, and the two sets of positioning blocks are fixedly connected to the two circumferential arms.

[0008] Furthermore, a frame-shaped groove is provided at the four sides of the rib bone plate, and a sealing frame is slidably inserted into the frame-shaped groove. A sealing block is installed on the lower surface of the front and rear side frames of the sealing frame. The sealing block covers the unused positioning hole and is slidably connected to the positioning hole. A third bone screw is threadedly connected to one side of the sealing frame. The third bone screw passes through the sealing frame and extends into the rib bone plate.

[0009] Furthermore, a rectangular groove is formed on the upper surface of the rib plate in the area where the second bone screw is located. The two sides of the rectangular groove extend to the frame of the sealing frame. The rectangular groove passes downward into the first bone screw, the second bone screw and the left and right side frames of the sealing frame. A rectangular limiting rod is slidably inserted into the rectangular groove. A fourth bone screw is threaded to the upper surface of one end of the rectangular limiting rod. The fourth bone screw passes through the rectangular limiting rod and the sealing frame and extends into the rib plate.

[0010] Furthermore, a second sliding groove is provided on the lower surface of both the front and rear side frames of the sealing frame. A first sliding groove connected to the second sliding groove is provided above the second sliding groove in the front and rear side frames of the sealing frame. A first slider is slidably connected in the first sliding groove, and a second slider is slidably connected in the second sliding groove. The lower surface of the first slider is fixedly connected to the upper surface of the second slider, and the lower surface of the second slider is fixedly connected to the upper surface of the sealing block. The first sliding groove is larger than the second sliding groove.

[0011] Furthermore, the lower end of the sealing block is flush with the bottom end of the positioning hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, through the cooperation of the first fixing hole, the second fixing hole, the first bone screw and the two circumferential arms, can adjust the spacing of the circumferential arms in advance according to the patient's rib fracture before implantation into the patient's body. After adjustment to a suitable state, the fixation and installation operation is carried out, thereby avoiding the tedious process of secondary adjustment in the patient's body. The structure is simple, easy to operate and highly practical.

[0014] 2. This utility model, through the cooperation of positioning holes, positioning blocks, first bone screws and two circumferential arms, allows for easy and efficient fixation during adjustment. Simply insert the positioning block into the positioning hole and then install the first bone screw. It is worth mentioning that the entire adjustment and fixation process can be completed outside the patient's body, improving the convenience and safety of the surgical procedure.

[0015] 3. This utility model achieves flexible position adjustment by using the cooperation of the frame groove, sealing frame, third bone screw and sealing block after the circumferential arm is installed, and by sliding the first slider and the second slider in the first and second sliding grooves. During this process, the sealing block on the second slider moves accordingly to cover and seal the unused positioning hole, preventing the patient's muscle tissue from seeping into the hole, thereby reducing the risk of infection and improving the patient's postoperative comfort. More importantly, the entire adjustment and sealing operation can be completed outside the patient's body.

[0016] 4. This utility model, through the cooperation of a rectangular groove, a rectangular limiting rod, and a fourth bone screw, after the rib bone plate is fixed to the patient's rib, in order to further enhance the fixation effect and prevent the first bone screw 7, the second bone screw 8, and the sealing frame 10 from loosening, can insert a rectangular limiting rod into the rectangular groove. The rectangular groove passes through the first bone screw 7, the second bone screw 8, and the sealing frame 10, and is reinforced by a fourth bone screw. This design can prevent the displacement of the first bone screw 7, the second bone screw 8, and the sealing frame 10, improve the stability of the bone plate, and enhance the durability of the surgical effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the positioning block and the circumferential arm of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the first fixing hole and positioning hole of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the frame-shaped groove and the rectangular groove of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the first bone screw and the rectangular limiting rod of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the third and fourth bone screws of this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the sealing frame and sealing block of this utility model.

[0024] In the diagram: 1. Rib plate; 2. First fixation hole; 3. Positioning hole; 4. Positioning block; 5. Encircling arm; 6. Second fixation hole; 7. First bone screw; 8. Second bone screw; 9. Frame groove; 10. Sealing frame; 11. Rectangular groove; 12. Rectangular limiting rod; 13. Third bone screw; 14. Fourth bone screw; 15. First sliding groove; 16. Second sliding groove; 17. First slider; 18. Second slider; 19. Sealing block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] like Figures 1 to 7 As shown, a composite bone plate includes a rib bone plate 1 and two circumferential arms 5 mounted on the rib bone plate 1. The upper end of the rib bone plate 1 has a plurality of evenly distributed first fixing holes 2. The upper ends of the two circumferential arms 5 each have a second fixing hole 6. A first bone screw 7 is threaded into each of the two first fixing holes 2. The first bone screw 7 is a short bone screw. The remaining first fixing holes 2 are threaded into the other two first fixing holes 2.

[0027] like Figure 1 As shown, the combined bone plate in this utility model is similar in structure to existing rib bone plates. For example, patent publication number CN219720834U discloses a rib bone plate. The main improvement of this utility model is that the spacing of the opposing double-ring arms can be adjusted externally according to the fracture condition. Figures 1 to 7 As shown, when using the combined bone plate of this utility model, the distance between the two circumferential arms 5 can be analyzed and adjusted according to the specific condition of the patient's rib fracture. After being adjusted to a suitable position, it can be fixed with the first bone screw 7, and then subsequent surgical steps can be carried out.

[0028] It is worth noting that the lower end of the first bone screw 7 is designed to be flush with the bottom end of the second fixation hole 6. This design can prevent the first bone screw 7 from compressing the patient's muscle tissue, thereby reducing the patient's discomfort.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, multiple sets of parallel positioning holes 3 are provided on both the front and rear sides of the rib plate 1. Positioning blocks 4 are slidably connected in two sets of positioning holes 3, and the two sets of positioning blocks 4 are fixedly connected to two circumferential arms 5.

[0030] Specifically, during the process of adjusting the distance between the two circumferential arms 5, the distance values ​​are compared and analyzed to select the two sets of positioning holes 3 that are closest. Then, the two sets of positioning blocks 4 are inserted into the selected positioning holes 3 for positioning. After completing the above steps, the first bone screw 7 can be used for fixation.

[0031] It is worth noting that the inner wall of the positioning hole 3 and the outer wall of the positioning block 4 are both provided with anti-slip texture, which can enhance the stability of the arm 5, making it easier to fix and also enhancing the stability after fixing.

[0032] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a frame-shaped groove 9 is provided at the four sides of the rib bone plate 1. A sealing frame 10 is slidably inserted into the frame-shaped groove 9. Sealing blocks 19 are installed on the lower surfaces of the front and rear side frames of the sealing frame 10. The sealing blocks 19 cover the unused positioning holes 3 and are slidably connected to the positioning holes 3. A symmetrically arranged third bone screw 13 is threaded to one side of the sealing frame 10. The third bone screw 13 penetrates the sealing frame 10 and extends into the rib bone plate 1.

[0033] Specifically, after adjusting and fixing the distance between the two circumferential arms 5, in order to further optimize the postoperative care effect, the remaining unused positioning holes 3 are sealed with sealing block 19. This is intended to prevent the patient's muscle tissue from accidentally seeping into the holes, thereby reducing the probability of postoperative infection and greatly improving the patient's postoperative comfort. In order to make the sealing effect more durable and reliable, the sealing block 19 is reinforced and limited with third bone screw 13 to enhance its overall stability.

[0034] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, a rectangular groove 11 is formed on the upper surface of the rib plate 1 in the area where the second bone screw 8 is located. The two sides of the rectangular groove 11 extend to the frame of the sealing frame 10. The rectangular groove 11 passes downward into the first bone screw 7, the second bone screw 8 and the left and right side frames of the sealing frame 10. A rectangular limiting rod 12 is slidably inserted into the rectangular groove 11. A fourth bone screw 14 is threaded to the upper surface of one end of the rectangular limiting rod 12. The fourth bone screw 14 passes through the rectangular limiting rod 12 and the sealing frame 10 and extends into the rib plate 1.

[0035] Specifically, after the rib plate 1 is installed on the patient's rib, in order to prevent the first bone screw 7, the second bone screw 8, and the sealing frame 10 from shifting and affecting the surgical outcome, a rectangular limiting rod 12 is inserted into the rectangular groove 11 that passes through the left and right sides of the first bone screw 7, the second bone screw 8, and the sealing frame 10. Then, the rectangular limiting rod 12 is fixed and limited by the fourth bone screw 14 to reinforce it. This measure not only improves the overall stability of the rib plate 1, but also enhances the durability of the surgical outcome.

[0036] like Figure 7 As shown, the lower surfaces of the front and rear side frames of the sealing frame 10 are provided with second sliding grooves 16. The front and rear side frames of the sealing frame 10 are provided with first sliding grooves 15 above the second sliding grooves 16, which are connected to the second sliding grooves 16. A first slider 17 is slidably connected in the first sliding groove 15, and a second slider 18 is slidably connected in the second sliding groove 16. The lower surface of the first slider 17 is fixedly connected to the upper surface of the second slider 18, and the lower surface of the second slider 18 is fixedly connected to the upper surface of the sealing block 19. The first sliding groove 15 is larger than the second sliding groove 16.

[0037] Specifically, in order to further improve work efficiency and optimize the operation process when sealing the positioning hole 3, a sealing block 19 with movable characteristics was designed. Specifically, by controlling the sliding of the first slider 17 and the second slider 18, the sealing block 19 can be moved to the position of the unused positioning hole 3, and then pressed in to seal the positioning hole 3. This design not only makes the sealing process more convenient, but also, thanks to the movable and adjustable characteristics of the sealing block 19, we no longer need to specially make sealing frames 10 and sealing blocks 19 of various specifications to adapt to positioning holes 3 in different positions, thus significantly saving manufacturing resources and reducing production costs.

[0038] like Figure 3 , Figure 4 and Figure 7 As shown, the lower end of the sealing block 19 is flush with the bottom end of the positioning hole 3, which can prevent the sealing block 19 from causing unnecessary compression on the patient's muscle tissue. Through this design optimization, the patient will be more comfortable and relaxed after the operation.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular bone plate, comprising a rib bone plate (1) and two circumferential arms (5) mounted on the rib bone plate (1), characterized in that, The upper end of the rib plate (1) is provided with a plurality of evenly distributed first fixing holes (2), and the upper ends of the two circumferential arms (5) are provided with second fixing holes (6). The two first fixing holes (2) are threaded with first bone screws (7), which are short bone screws. The remaining first fixing holes (2) are threaded with second bone screws (8).

2. The composite bone plate according to claim 1, characterized in that, The rib bone plate (1) has multiple sets of parallel positioning holes (3) on both the front and rear sides. Positioning blocks (4) are slidably connected in two sets of positioning holes (3), and the two sets of positioning blocks (4) are fixedly connected to two circumferential arms (5).

3. A composite bone plate according to claim 1 or 2, characterized in that, The rib bone plate (1) has a frame-shaped groove (9) at its four sides. A sealing frame (10) is slidably inserted into the frame-shaped groove (9). Sealing blocks (19) are installed on the lower surfaces of the front and rear side frames of the sealing frame (10). The sealing blocks (19) cover the unused positioning holes (3) and are slidably connected to the positioning holes (3). A symmetrically arranged third bone screw (13) is threaded to one side of the sealing frame (10). The third bone screw (13) penetrates the sealing frame (10) and extends into the rib bone plate (1).

4. A composite bone plate according to claim 3, characterized in that, The upper surface of the rib plate (1) has a rectangular groove (11) in the area where the second bone screw (8) is located. The two sides of the rectangular groove (11) extend to the frame of the sealing frame (10). The rectangular groove (11) passes downward to the left and right side frames of the first bone screw (7), the second bone screw (8) and the sealing frame (10). A rectangular limiting rod (12) is slidably inserted in the rectangular groove (11). A fourth bone screw (14) is threaded to the upper surface of one end of the rectangular limiting rod (12). The fourth bone screw (14) passes through the rectangular limiting rod (12) and the sealing frame (10) and extends into the rib plate (1).

5. A composite bone plate according to claim 3, characterized in that, The lower surfaces of the front and rear side frames of the sealing frame (10) are provided with second sliding grooves (16). The front and rear side frames of the sealing frame (10) are provided with first sliding grooves (15) above the second sliding grooves (16) and connected to the second sliding grooves (16). A first slider (17) is slidably connected in the first sliding groove (15). A second slider (18) is slidably connected in the second sliding groove (16). The lower surface of the first slider (17) is fixedly connected to the upper surface of the second slider (18). The lower surface of the second slider (18) is fixedly connected to the upper surface of the sealing block (19). The first sliding groove (15) is larger than the second sliding groove (16) in the whole.

6. A composite bone plate according to claim 4, characterized in that, The lower surfaces of the front and rear side frames of the sealing frame (10) are provided with second sliding grooves (16). The front and rear side frames of the sealing frame (10) are provided with first sliding grooves (15) above the second sliding grooves (16) and connected to the second sliding grooves (16). A first slider (17) is slidably connected in the first sliding groove (15). A second slider (18) is slidably connected in the second sliding groove (16). The lower surface of the first slider (17) is fixedly connected to the upper surface of the second slider (18). The lower surface of the second slider (18) is fixedly connected to the upper surface of the sealing block (19). The first sliding groove (15) is larger than the second sliding groove (16) in the whole.

7. A composite bone plate according to claim 5 or 6, characterized in that, The lower end of the sealing block (19) is flush with the bottom end of the positioning hole (3).

8. A composite bone plate according to claim 3, characterized in that, The lower end of the sealing block (19) is flush with the bottom end of the positioning hole (3).

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