Rib intraosseous fixing support, mounting method and dismounting method

Abstract

The invention relates to the technical field of medical instruments, and discloses a rib intraosseous fixing support, a mounting method and a dismounting method.The rib intraosseous fixing support comprises a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are connected through a hollow bolt, and extension sections are arranged on the upper surface of the hollow bolt towards the two sides along the surface of the second connecting plate; the extension section is larger than the through hole of the second connecting plate penetrating through the hollow bolt; a central column is connected in the hollow bolt, and the upper end of the central column is connected with a cap-shaped nut. During installation, a window is formed in the surface of a rib, the linear fixing support is rotated to be laterally placed in the rib, and the linear fixing support is adjusted to be an X-shaped fixing support through a tool after being rotated by 90 degrees and fixed through a cap-shaped nut. During dismounting, only the cap-shaped nut, the central column and the hollow bolt are dismounted. Compared with the prior art, built-in and fixation of ribs of the fixing support are achieved, in the using process, the intraosseous support can be fixed only by conducting local anesthesia on a patient to achieve small-range opening, the wound is small, the later influence is small, and dismounting is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a rib bone internal fixation bracket, an installation method and a removal method. Background Art

[0002] Traditional rib fracture fixation devices are relatively simple, often featuring an encircling brace that surrounds the fractured bone joints. However, if a rib fracture has multiple fractures, the ribs are mobile, their movements counter to breathing, resulting in flail chest. This necessitates a larger encircling brace. However, this type of surgery requires the patient to be under general anesthesia for fixation. However, many critically ill patients are immobile and cannot tolerate general anesthesia, making this type of surgery highly risky. Furthermore, once the encircling brace is fixed to the rib, it is not removed unless absolutely necessary. If removal is necessary, another surgery is required, increasing the patient's pain. Furthermore, the encircling brace can also create a negative experience for the patient. Therefore, how to achieve fixation of rib fractures under local anesthesia while minimizing the surgical incision remains an urgent challenge. Summary of the Invention

[0003] Purpose of the invention: In response to the problems existing in the prior art, the present invention provides a rib bone fixation bracket, installation method and removal method. The bracket is inserted and fixed by opening a window on the rib. When in use, only local anesthesia is required for the patient to make a small opening to achieve fixation of the bone bracket.

[0004] Technical solution: The present invention provides a rib bone internal fixation bracket, comprising a first connecting plate and a second connecting plate, the center of the first connecting plate and the center of the second connecting plate are connected by a hollow bolt, the first connecting plate and the lower end of the hollow bolt are connected by a thread, the second connecting plate is located above the first connecting plate, and it passes through the hollow bolt, the upper surface of the hollow bolt is provided with extension sections along the surface of the second connecting plate to both sides, the size of the extension section is larger than the size of the through hole of the second connecting plate passing through the hollow bolt; a center column is connected inside the hollow bolt, and a cover nut is also connected to the upper end of the center column.

[0005] Furthermore, the cap nut is threadedly connected to the center column, its surface is arc-shaped, and friction lines are provided thereon, and the diameter of the cap nut is slightly smaller than the width of the rib.

[0006] Furthermore, a groove structure is obliquely provided on the upper surface of the first connecting plate, the width of the groove matches the width of the second connecting plate, and the depth of the groove matches the thickness of the second connecting plate.

[0007] Furthermore, holes are provided at corresponding positions at both ends of the first connecting plate and the second connecting plate.

[0008] Furthermore, the lengths of the first connecting plates and the second connecting plates are slightly greater than the width of the ribs.

[0009] The present invention also discloses a method for installing the rib internal fixation bracket, comprising the following steps: Step 1: After local anesthesia, a window is opened along the upper surface of the rib perpendicular to the fracture end through minimally invasive surgery; Step 2: Place the entire structure formed by the first connecting plate, the second connecting plate, and the hollow bolt into the rib from the side through the window using a tool. At this point, the first connecting plate and the second connecting plate form a straight line. Step 3: Rotate the entire structure formed by the first connecting plate, the second connecting plate, and the hollow bolt 90 degrees in the circumferential direction so that the hollow bolt faces upward; Step 4: Rotate the second connecting plate through the hollow bolts to form an X-shaped fixing bracket with the first connecting plate; Step 5: Adjust the position of the X-shaped fixing bracket so that it is located directly below the fracture end. After connecting it to the hollow bolt through the center column, lock the X-shaped fixing bracket to the rib surface through the cap nut. The size of the cap nut is larger than the window width and slightly smaller than the rib width.

[0010] The present invention also discloses a method for removing the rib internal fixation bracket, comprising the following steps: Step 1: After local anesthesia, minimally invasively separate the cap nut from the center column using tools; Step 2: Continue to screw the center column to separate the hollow bolt from the center column and then pull out the center column with a tool; Step 3: Continue to rotate the hollow bolt to separate the first connecting plate, the second connecting plate and the hollow bolt, and use the tool to pull out the hollow bolt to complete the bracket removal.

[0011] Preferably, a groove structure is also obliquely provided on the upper surface of the first connecting plate, and the width of the groove matches the width of the second connecting plate. When the second connecting plate is rotated through the center column into an X shape with the first connecting plate, the second connecting plate is located in the groove of the first connecting plate.

[0012] Preferably, holes are provided at both ends of the first connecting plate and the second connecting plate. When the second connecting plate is rotated into an X shape with the first connecting plate through a hollow bolt, a hook tool is inserted into the hole to pull the second connecting plate to achieve an X shape between the second connecting plate and the first connecting plate.

[0013] Beneficial effects

[0014] 1. The present invention designs a rib bone internal fixation bracket. When a patient has a rib fracture, local anesthesia can be performed, and local surgery can be performed at the fracture site to fix the fracture end. The wound is small, and this fixation bracket is located inside the rib bone and will not affect the patient. When in use, this fixation bracket can enter the bone laterally through a window. The thickness of the first connecting plate and the second connecting plate is relatively small. After the two are in a straight line, the lateral entry can reduce the size of the window. After entering the bone, it is rotated 90 degrees to make the first connecting plate and the second connecting plate in a flat form. By rotating the two connecting plates, the first connecting plate and the second connecting plate are in an X shape. At this time, the center column and the cap nut are locked from the outside of the rib. The surface of the rib is fixed by the X-shaped first connecting plate, the second connecting plate and the cap nut to fix the fracture end.

[0015] 2. The hollow bolt designed in the present invention is provided with an extension section on its upper surface, so that the first connecting plate and the second connecting plate can form a whole with the hollow bolt, and the second connecting plate will not fall out of the hollow bolt, and parts will not fall off during installation.

[0016] 3. The surface of the cap nut designed in the present invention is arc-shaped, and after installation, it can be tangent to the internal tissue of the human body, reducing the damage of the multi-angle nut to the human tissue. The friction grooves are provided on the cap nut to facilitate removal and installation. The diameter of the cap nut is slightly smaller than the width of the rib, so that after being locked by the cap nut, it will not affect other tissues of the human body, and can lock and fix the fractured end of the rib.

[0017] 4. The rib bone internal fixation bracket designed in this invention features a groove structure on the first connecting plate. After rotating into an X-shape, the second connecting plate fits snugly into the groove, with the groove depth matching the thickness of the second connecting plate. This creates a flat surface for the first and second connecting plates, enhancing stability when secured via the center column and cap nut. Furthermore, the X-shaped bracket within the rib does not rotate back into a straight line, further enhancing stability. When rotating the first and second connecting plates into the X-shaped bracket, a hook tool can be used to pull the holes in the second connecting plate to achieve rotation on the center column, facilitating operation.

[0018] 5. The installation scheme disclosed in the present invention can be performed under local anesthesia without moving the patient. A window is opened on the rib to facilitate the placement of the entire fixing bracket into the rib. The fractured end of the rib can be fixed after being locked with a cap nut. If there are multiple fractures on the rib, the fixing bracket can be installed in multiple places with minimal trauma.

[0019] 6. When removing the fixing bracket of the present invention, first, the window on the surface of the rib has healed due to time, so only the cap nut and the center column need to be removed. The first connecting plate and the second connecting plate inside the rib do not affect any movement of the patient and do not need to be removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the rib internal fixation bracket of the present invention; Figure 2 This is a top view of the rib internal fixation bracket of the present invention; Figure 3 This is a schematic diagram of the groove structure of the first connecting plate of the present invention; Figure 4 A side sectional view of the laterally inserted fixing bracket of the present invention; Figure 5 A top cross-sectional view of the laterally inserted fixing bracket of the present invention; Figure 6 A side cross-sectional view of the fixing bracket of the present invention rotated 90 degrees circumferentially; Figure 7 A top cross-sectional view of the fixing bracket of the present invention rotated 90 degrees circumferentially; Figure 8 This is a top cross-sectional view of the fixing bracket after installation of the present invention.

[0021] Among them, 1-first connecting plate, 2-second connecting plate, 3-center column, 4-cap nut, 5-groove, 6-window, 7-hole, 8-hollow bolt, 9-extension section. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0023] The present invention discloses a rib bone internal fixation bracket, see attached Figures 1 to 6 The structure comprises a first connecting plate 1 and a second connecting plate 2. The center of the first connecting plate 1 is connected to the center of the second connecting plate 2 by a hollow bolt 8. The first connecting plate 1 and the lower end of the hollow bolt 8 are threadedly connected. The second connecting plate 2 is located above the first connecting plate 1 and is provided with hollow bolt 8. The upper surface of the hollow bolt 8 is provided with extension sections 9 extending along the surface of the second connecting plate 2. The extension sections 9 are larger than the through hole in the second connecting plate 2 through which the hollow bolt 8 passes. The hollow bolt 8 forms the first connecting plate 1 and the second connecting plate 2 into a single unit. A center column 3 is connected to the hollow bolt 8, and a cap nut 4 is also connected to the upper end of the center column 3.

[0024] The cap nut 4 is threadedly connected to the central column 3, and its surface is arc-shaped and provided with friction lines. The diameter of the cap nut 4 is slightly smaller than the width of the rib.

[0025] A groove 5 structure is also obliquely provided on the upper surface of the first connecting plate 1 . The width of the groove 5 matches the width of the second connecting plate 2 , and the depth of the groove 5 matches the thickness of the second connecting plate 2 .

[0026] Holes 7 are provided at corresponding positions at both ends of the first connecting plate 1 and the second connecting plate 2 .

[0027] The lengths of the first connecting plate 1 and the second connecting plate 2 are slightly greater than the width of the ribs.

[0028] The installation method of the rib internal fixation bracket includes the following steps: Step 1: After local anesthesia, a window 6 is opened on the upper surface of the rib perpendicular to the fracture end through minimally invasive surgery.

[0029] Step 2: The first connecting plate 1 and the second connecting plate 2 are in a straight line (rotate the second connecting plate 2 so that the first connecting plate 1 and the second connecting plate 2 are in a straight line). The whole structure formed by the first connecting plate 1, the second connecting plate 2 and the hollow bolt 8 is inserted into the rib from the side through the window 6 through a tool. In the specific implementation, it can be a tool such as tweezers. See the side cross-sectional view of the window 6 for details. Figure 4 , see the top view of the cross section Figure 5 , because the first connecting plate 1 and the second connecting plate are narrower in thickness, even if the two are in a straight line, the thickness of the two is also narrower, and the size of the window can be reduced by placing them in the bone laterally. At this moment, the hollow bolt 8 is not in a forward direction.

[0030] Step 3: Rotate the entire structure formed by the first connecting plate 1, the second connecting plate 2 and the hollow bolt 8 by 90 degrees so that the hollow bolt 8 is facing upwards. In practice, the 90-degree rotation can be completed by using tools such as hooks or tweezers. Figure 6 and Figure 7 , Figure 6 This is a side sectional view after rotating 90 degrees. Figure 7 It is a top view after rotating 90 degrees.

[0031] Step 4: Use hollow bolts 8 to rotate the second connecting plate 2 into an X-shaped bracket with the first connecting plate 1. Once the second connecting plate 2 is rotated into the X-shape with the first connecting plate 1 using hollow bolts 8, insert a hook tool into hole 7 and pull the second connecting plate 2 to create the X-shape. Once the second connecting plate 2 is rotated into the X-shape with the first connecting plate 1 using center column 3, the second connecting plate 2 is positioned within groove 5 of the first connecting plate 1.

[0032] Step 5: Adjust the position of the X-shaped fixing bracket so that it is located directly below the fracture end. After connecting the center column 3 with the hollow bolt 8, use the cap nut 4 to lock and fix the X-shaped fixing bracket to the rib surface. The size of the cap nut 4 is larger than the width of the window 6 and slightly smaller than the width of the rib. Figure 8 , the surface area of ​​the cap nut is larger, the size is larger than the width of the window 6, and smaller than the width of the rib.

[0033] The method for removing the rib internal fixation bracket includes the following steps: Step 1: After local anesthesia, minimally invasively separate the cap nut 4 from the central column 3 using tools.

[0034] Step 2: Continue to screw the center column 3 to rotate the hollow bolt 8 away from the center column 3 and pull out the center column 3 using a tool.

[0035] Step 3: Continue to rotate the hollow bolt 8 to separate the first connecting plate 1 and the second connecting plate 2 from the hollow bolt 8, and use a tool to pull out the hollow bolt 8 to complete the removal of the fixed bracket.

[0036] The rib internal fixator disclosed in the present invention allows for local anesthesia during fracture repair, allowing for local incision at the fracture site to fix the fracture ends. This results in minimal incision, and the fixator is located within the rib bone, minimizing the risk of injury to the patient. After the fracture ends have healed, the fixator can be removed through minimally invasive surgery, and even then, the patient's physical and mental health will not be affected.

[0037] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A rib bone internal fixation bracket, characterized in that: The invention comprises a first connecting plate (1) and a second connecting plate (2), wherein the center of the first connecting plate (1) and the center of the second connecting plate (2) are connected via a hollow bolt (8), the first connecting plate (1) and the lower end of the hollow bolt (8) are connected via a thread, the second connecting plate (2) is located above the first connecting plate (1), and is provided through the hollow bolt (8), the upper surface of the hollow bolt (8) is provided with an extension section (9) on both sides along the surface of the second connecting plate (2), and the size of the extension section (9) is larger than the size of the through hole of the second connecting plate (2) through which the hollow bolt (8) is passed; a center column (3) is connected inside the hollow bolt (8), and a cap nut (4) is also connected to the upper end of the center column (3).

2. The rib internal fixation bracket according to claim 1, characterized in that: The cap nut (4) is threadedly connected to the central column (3), and its surface is arc-shaped and provided with friction lines. The diameter of the cap nut (4) is slightly smaller than the width of the rib.

3. The rib internal fixation bracket according to claim 1, characterized in that: A groove (5) structure is also obliquely provided on the upper surface of the first connecting plate (1); the width of the groove (5) matches the width of the second connecting plate (2); and the depth of the groove (5) matches the thickness of the second connecting plate (2).

4. The rib internal fixation bracket according to claim 1, characterized in that: Holes (7) are provided at corresponding positions at both ends of the first connecting plate (1) and the second connecting plate (2).

5. The rib internal fixation bracket according to claim 1, characterized in that: The lengths of the first connecting plate (1) and the second connecting plate (2) are slightly greater than the width of the ribs.

6. A method for installing a rib internal fixation bracket according to any one of claims 1 to 5, characterized in that: The steps include: Step 1: After local anesthesia, a minimally invasive window is created along the upper surface of the rib perpendicular to the fracture end (6); Step 2: The first connecting plate (1) and the second connecting plate (2) are in a straight line shape, and the entire structure formed by the first connecting plate (1), the second connecting plate (2) and the hollow bolt (8) is placed sideways into the rib through the window (6) using a tool; Step 3: rotating the entire structure formed by the first connecting plate (1), the second connecting plate (2) and the hollow bolt (8) 90 degrees in the circumferential direction so that the hollow bolt (8) is arranged upward; Step 4: Rotate the second connecting plate (2) through the hollow bolt (8) to form an X-shaped fixing bracket with the first connecting plate (1); Step 5: Adjust the position of the X-shaped fixing bracket so that it is located directly below the fracture end. After connecting the central column (3) with the hollow bolt (8), the X-shaped fixing bracket is locked and fixed to the rib surface through the cap nut (4). The size of the cap nut (4) is larger than the width of the window (6) and slightly smaller than the width of the rib.

7. A method for removing a rib internal fixation bracket according to any one of claims 1 to 5, characterized in that: The steps include: Step 1: After local anesthesia, the cap nut (4) is separated from the central column (3) by minimally invasive means using a tool; Step 2: Continue to screw the center column (3) to separate the hollow bolt (8) from the center column (3) and then extract the center column (3) using a tool; Step 3: Continue to rotate the hollow bolt (8) to separate the first connecting plate (1), the second connecting plate (2) and the hollow bolt (8), and use a tool to pull out the hollow bolt (8) to complete the removal of the fixed bracket.

8. The installation method according to claim 6, characterized in that: The upper surface of the first connecting plate (1) is also provided with a groove (5) structure at an angle, the width of the groove (5) matching the width of the second connecting plate (1), and when the second connecting plate (2) is rotated through the central column (3) to form an X shape with the first connecting plate (1), the second connecting plate (2) is located in the groove (5) of the first connecting plate (1).

9. The installation method according to claim 6, characterized in that: Holes (7) are also provided at both ends of the first connecting plate (1) and the second connecting plate (2). When the second connecting plate (2) is rotated into an X-shape with the first connecting plate (1) through the hollow bolt (8), a hook tool is inserted into the hole (7) to pull the second connecting plate (2) so that the second connecting plate (2) and the first connecting plate (1) are in an X-shape.

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