Bone fracture plate assembly capable of moving slightly in axial direction

Abstract

The utility model relates to a bone fracture plate assembly capable of axially moving slightly, and relates to the field of bone fracture plates. The bone fracture plate assembly capable of axially moving slightly comprises a first bone fracture plate, a second bone fracture plate and a plurality of locking screws, the first bone fracture plate and the second bone fracture plate are coaxially arranged, and the first bone fracture plate and the second bone fracture plate are movably connected, so that the first bone fracture plate and the second bone fracture plate can move in the direction close to each other or away from each other; the first bone fracture plate and the second bone fracture plate are each provided with a plurality of locking pressurizing holes. And the plurality of locking screws are matched with the plurality of locking pressurizing holes in a one-to-one correspondence manner. According to the bone fracture plate assembly capable of axially moving slightly, the technical problems that an existing bone fracture plate cannot adapt to the position of slight movement according to the fractured part, the slight movement amount cannot be controlled, and the effect of promoting callus growth has uncertainty for changes of anatomical structures of different patients are solved.

Description

Technical Field

[0001] The present application relates to the field of bone plates, and in particular to a bone plate assembly capable of axial micro-movement. Background Art

[0002] Fractures are a common condition in life. The goal of fracture treatment is to restore the function of the fracture site to the greatest extent possible. Therefore, fracture treatment should follow three principles: reduction, fixation, and functional exercise. To avoid instability and re-displacement after reduction, the position after reduction needs to be fixed to allow the fracture to gradually heal. Bone plates are designed based on the bionics of the human skeleton. In the internal fixation system, the plate is placed on the bone surface, and screws are used to fix the broken bone and the plate, achieving the purpose of fracture reduction and fixation, and promoting healing.

[0003] After completing fracture fixation, existing conventional bone plates have a slight axial displacement of the fracture site under biological load, which can maintain continuous mechanical stimulation and promote the formation of callus; however, there are problems such as the inability to adapt the position of micro-movement according to the fracture part and the inability to control the amount of micro-movement; in addition, the effect of conventional bone plates in promoting callus growth is uncertain due to the changes in the anatomical structure of different patients. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an axially micro-movable bone plate assembly to alleviate the technical problems that the existing bone plates cannot adapt to the position of micro-movement according to the fracture part, cannot control the amount of micro-movement, and have uncertain effects on promoting callus growth due to changes in the anatomical structures of different patients.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The utility model provides an axially slightly movable bone plate assembly comprising a first bone plate, a second bone plate and a plurality of locking screws;

[0007] The first bone plate and the second bone plate are coaxially arranged and movably connected to the second bone plate so that the first bone plate and the second bone plate can move toward or away from each other;

[0008] The first bone plate and the second bone plate are both provided with a plurality of locking and pressurizing holes. The plurality of locking and pressurizing holes located on the first bone plate are arranged at intervals along the axial direction of the first bone plate and pass through the first bone plate along the thickness direction of the first bone plate; the plurality of locking and pressurizing holes located on the second bone plate are arranged at intervals along the axial direction of the second bone plate and pass through the second bone plate along the thickness direction of the second bone plate;

[0009] The plurality of locking screws are matched with the plurality of locking pressure holes in a one-to-one correspondence.

[0010] Furthermore, the bone plate assembly further comprises a limiting member, and an end of the first bone plate close to the second bone plate is provided with a connecting protrusion, and the connecting protrusion is provided with a through hole;

[0011] A connecting groove is provided at one end of the second bone fracture plate close to the first bone fracture plate, and a first mounting hole is provided on a side wall of the connecting groove;

[0012] The connecting protrusion is inserted into the connecting groove, and a first gap is left between the connecting protrusion and the bottom wall of the connecting groove. The limiting member is connected to the first mounting hole and extends into the through hole, and a second gap is left between the limiting member and the through hole.

[0013] Furthermore, the second gap is smaller than or equal to the first gap.

[0014] Furthermore, the limiting member is threadedly connected to the first mounting hole.

[0015] Furthermore, the limiting member is engaged with the first mounting hole.

[0016] Furthermore, the limiting member is bonded to the first mounting hole.

[0017] Furthermore, a second mounting hole is provided on a side wall of the connecting groove opposite to the first mounting hole, and the limiting member is connected to the first mounting hole and passes through the through hole and the second mounting hole in sequence.

[0018] Furthermore, the first bone fracture plate includes a first bone fracture section and a first connecting section;

[0019] One end of the first connecting section is connected to the first bone-setting section, and the other end is provided with the connecting protrusion, and the locking pressure hole is provided in the first bone-setting section;

[0020] The thickness of the first connecting section gradually increases from one end close to the first bone fixing section to one end close to the connecting protrusion; and / or the width of the first connecting section gradually increases from one end close to the first bone fixing section to one end close to the connecting protrusion.

[0021] Furthermore, the second bone fracture plate includes a second bone fracture section and a second connecting section;

[0022] One end of the second connecting section is connected to the second bone-setting section, and the other end is provided with the connecting groove, and the locking pressure hole is provided in the second bone-setting section;

[0023] The thickness of the second connecting section gradually increases from one end close to the second bone fixing section to one end away from the second bone fixing section; and / or the width of the second connecting section gradually increases from one end close to the second bone fixing section to one end away from the second bone fixing section.

[0024] Furthermore, a mounting protrusion is provided on an outer wall of the second connecting section, and the first mounting hole extends from the mounting protrusion to the connecting groove.

[0025] Based on the above technical solutions, the technical effects that can be achieved by this utility model are analyzed as follows:

[0026] The axially micro-movable bone plate assembly provided by the utility model includes a first bone plate, a second bone plate and a plurality of locking screws; the first bone plate and the second bone plate are coaxially arranged, and the first bone plate is movably connected to the second bone plate so that the first bone plate and the second bone plate can move toward or away from each other; the first bone plate and the second bone plate are both provided with a plurality of locking pressure holes, and the plurality of locking pressure holes located in the first bone plate are arranged at intervals along the axial direction of the first bone plate and pass through the first bone plate along the thickness direction of the first bone plate; the plurality of locking pressure holes located in the second bone plate are arranged at intervals along the axial direction of the second bone plate and pass through the second bone plate along the thickness direction of the second bone plate; the plurality of locking screws correspond to the plurality of locking pressure holes in a one-to-one manner. Before using the axially micro-movable plate assembly, the first plate and the second plate are kept in active connection, and the micro-movement amounts of different axially micro-movable plate assemblies can be designed to be different; when using the axially micro-movable plate assembly, an axially micro-movable plate assembly with appropriate length and micro-movement amount is selected according to the patient's fracture condition; the locking screws are installed in sequence, and if pressure is required, ordinary cortical bone screws can be installed on the pressure hole of the locking pressure hole for pressure application.

[0027] The first and second plates are movably connected to each other, enabling axial micro-movement of the plate assembly. The amount of micro-movement is controllable and can be adjusted by controlling the position of the movable connection between the first and second plates. Clinicians can select a plate assembly with an appropriate amount of micro-movement based on the fracture condition and location, thus avoiding the uncertainty of the effectiveness of promoting callus growth due to variations in patient anatomy.

[0028] The conventional combination of bone plate and screw forms micro-motion through the elastic deformation of the bone plate, so that the micro-motion of the two ends of the screw is unbalanced, the micro-motion of the top end of the screw in contact with the bone plate is small, and the micro-motion of the screw is large at the tip of the screw away from the bone plate; while the first bone plate and the second bone plate in the bone plate assembly with axial micro-motion are movably connected, which is equivalent to the middle part of the bone plate assembly with axial micro-motion not needing to place a locking screw to achieve axial movement; the two ends of the locking screw installed on the bone plate assembly with axial micro-motion form a roughly parallel micro-motion distance, which can stimulate the stable growth of callus on the fracture end surface, which is beneficial to the fixation and healing of the fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic structural diagram of a bone plate assembly capable of axial micro-movement provided in an embodiment of the present application;

[0031] Figure 2 A cross-sectional view of a bone plate assembly capable of axial micro-movement provided in an embodiment of the present application;

[0032] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0033] Figure 4 A schematic diagram of the partial structure of the first bone plate in the axially slightly movable bone plate assembly provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of the partial structure of the second bone plate in the axially slightly movable bone plate assembly provided in an embodiment of the present application;

[0035] Figure 6 A top view of the axially micro-movable bone plate assembly provided in an embodiment of the present application.

[0036] icon:

[0037] 100 - first bone plate; 110 - locking pressure hole; 120 - connecting protrusion; 121 - through hole; 130 - first bone segment; 140 - first connecting segment;

[0038] 200 - second bone plate; 210 - connecting groove; 211 - first mounting hole; 212 - second mounting hole; 220 - second bone segment; 230 - second connecting segment; 231 - mounting protrusion;

[0039] 300-locking screw;

[0040] 400-limiting parts;

[0041] a-first gap; b-second gap; c-third gap. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0044] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0045] See Figures 1 to 6The embodiment of the present invention provides an axially micro-movable bone plate assembly comprising a first bone plate 100, a second bone plate 200 and a plurality of locking screws 300; the first bone plate 100 and the second bone plate 200 are coaxially arranged, and the first bone plate 100 and the second bone plate 200 are movably connected so that the first bone plate 100 and the second bone plate 200 can move toward or away from each other; the first bone plate 100 and the second bone plate 200 are both provided with a plurality of locking pressure screws 300. Hole 110, the multiple locking and pressurizing holes 110 located in the first bone plate 100 are arranged at intervals along the axial direction of the first bone plate 100, and pass through the first bone plate 100 along the thickness direction of the first bone plate 100; the multiple locking and pressurizing holes 110 located in the second bone plate 200 are arranged at intervals along the axial direction of the second bone plate 200, and pass through the second bone plate 200 along the thickness direction of the second bone plate 200; the multiple locking screws 300 correspond one-to-one with the multiple locking and pressurizing holes 110.

[0046] Specifically, the locking screw 300 in the bone plate assembly capable of axial micro-movement is consistent with the locking screw 300 adapted for a conventional bone plate, thereby achieving the universality of the locking screw 300 .

[0047] Before using the axially micro-movable plate assembly, the first plate 100 and the second plate 200 are kept in active connection, and the micro-motion amounts of different axially micro-movable plate assemblies can be designed to be different; when using the axially micro-movable plate assembly, an axially micro-movable plate assembly with appropriate length and micro-motion amount is selected according to the patient's fracture situation; the locking screws 300 are installed in sequence, and if pressure is required, ordinary cortical bone screws can be installed on the pressure hole of the locking pressure hole 110 for pressure application. The first plate 100 and the second plate 200 are movably connected to achieve axial micro-motion of the axially micro-movable plate assembly, and the micro-motion amount is controllable, and the micro-motion amount can be adjusted by controlling the position of the active connection between the first plate 100 and the second plate 200. Clinicians can select an axially micro-movable plate assembly with appropriate micro-motion amount according to the fracture situation and location, avoiding the problem of uncertainty in the effect of promoting callus growth due to changes in the anatomical structure of different patients. The combination of a conventional bone plate and a screw forms micro-motion through the elastic deformation of the bone plate, so that the micro-motion amount at both ends of the screw is unbalanced, the micro-motion at the top of the screw in contact with the bone plate is small, and the micro-motion at the tip of the screw away from the bone plate is large; while in the bone plate assembly with axial micro-motion, the first bone plate 100 and the second bone plate 200 are movably connected, which is equivalent to the middle part of the bone plate assembly with axial micro-motion not needing to place the locking screw 300 to achieve axial movement; the two ends of the locking screw 300 installed on the bone plate assembly with axial micro-motion form a roughly parallel micro-motion distance, which can stimulate the stable growth of callus on the fracture end surface, which is beneficial to the fixation and healing of the fracture.

[0048] The shape and structure of the bone plate assembly capable of axial micro-motion are described in detail below:

[0049] In the optional solution of the embodiment of the present utility model, see Figures 1 to 6 The bone plate assembly also includes a limit member 400, and the first bone plate 100 is provided with a connecting protrusion 120 at one end close to the second bone plate 200, and the connecting protrusion 120 is provided with a through hole 121; the second bone plate 200 is provided with a connecting groove 210 at one end close to the first bone plate 100, and the side wall of the connecting groove 210 is provided with a first mounting hole 211; the connecting protrusion 120 is inserted into the connecting groove 210, and a first gap a is left between the connecting protrusion 120 and the bottom wall of the connecting groove 210, the limit member 400 is connected to the first mounting hole 211, and extends into the through hole 121, and a second gap b is left between the limit member 400 and the through hole 121.

[0050] Specifically, in this embodiment, the length of the first bone plate 100 is less than the length of the second bone plate 200. Figure 3 The distal end of the connecting protrusion 120 of the first bone plate 100 is configured as an arcuate shape, and the bottom wall of the connecting groove 210 is correspondingly configured as an arcuate shape. A third gap c is provided between the distal end of the first bone plate 100 adjacent to the second bone plate 200 and the second bone plate 200. Preferably, the thickness of the connecting protrusion 120 is consistent with the width of the connecting groove 210 to prevent movement of the first bone plate 100 relative to the second bone plate 200 along the thickness direction of the first bone plate 100.

[0051] The connecting protrusion 120 is inserted into the connecting groove 210, and the limiting member 400 is connected to the first mounting hole 211 and extends into the through hole 121 to realize the connection between the first bone plate 100 and the second bone plate 200; there is a second gap between the limiting member 400 and the through hole 121, and there is a first gap between the connecting protrusion 120 and the bottom wall of the connecting groove 210, so that the connecting protrusion 120 can move axially in the connecting groove 210, realizing the movable connection between the first bone plate 100 and the second bone plate 200, and further realizing that the first bone plate 100 and the second bone plate 200 can move toward or away from each other.

[0052] In an optional solution of the embodiment of the present invention, the second gap b is smaller than or equal to the first gap a.

[0053] Specifically, in this embodiment, see Figure 3 The first gap a, the second gap b and the third gap c are equal, and jointly control the micro-motion between the first bone plate 100 and the second bone plate 200, thereby improving the control accuracy.

[0054] In an optional solution of the embodiment of the present utility model, the limiting member 400 is threadedly connected to the first mounting hole 211 .

[0055] Specifically, an external thread is provided on the top of the limiting member 400 , and an internal thread is provided on the inner wall of the first mounting hole 211 , and the external thread is threadably connected to the internal thread.

[0056] The limiting member 400 is threadedly connected to the first mounting hole 211 to achieve connection between the limiting member 400 and the first mounting hole 211 .

[0057] As another embodiment, the limiting member 400 is engaged with the first mounting hole 211 .

[0058] As another embodiment, the limiting member 400 is bonded to the first mounting hole 211 .

[0059] In an optional solution of the embodiment of the present invention, a second mounting hole 212 is provided on the side wall of the connecting groove 210 opposite to the first mounting hole 211 , and the limiting member 400 is connected to the first mounting hole 211 and passes through the through hole 121 and the second mounting hole 212 in sequence.

[0060] Specifically, see Figure 5 , the axis of the first mounting hole 211 and the axis of the second mounting hole 212 are collinear.

[0061] After the limiting member 400 is installed, the top end is threadedly connected to the first mounting hole 211, and the bottom end extends into the second mounting hole 212, thereby increasing the contact area between the limiting member 400 and the second bone plate 200 and enhancing the connection effect; and because both ends of the limiting member 400 extend into the first mounting hole 211 and the second mounting hole 212 at the same time, vertical displacement of the first bone plate 100 and the second bone plate 200 when moving toward or away from each other is avoided.

[0062] In an optional solution of an embodiment of the present invention, the first bone fracture plate 100 includes a first bone fracture segment 130 and a first connecting segment 140; one end of the first connecting segment 140 is connected to the first bone fracture segment 130, and the other end is provided with a connecting protrusion 120, and the locking pressure hole 110 is provided in the first bone fracture segment 130; the thickness of the first connecting segment 140 gradually increases from the end close to the first bone fracture segment 130 to the end close to the connecting protrusion 120; and / or, the width of the first connecting segment 140 gradually increases from the end close to the first bone fracture segment 130 to the end close to the connecting protrusion 120.

[0063] Specifically, in this embodiment, see Figure 2 and Figure 6 The thickness of the first connecting section 140 gradually increases from the end close to the first bone fixing section 130 to the end close to the connecting protrusion 120, and the width of the first connecting section 140 gradually increases from the end close to the first bone fixing section 130 to the end close to the connecting protrusion 120.

[0064] The thickness of the first connecting section 140 gradually increases, which improves the strength of the first connecting section 140, and the thickness of the connecting protrusion 120 can be increased as much as possible, thereby enhancing the connection strength between the first connecting section 140 and the second bone plate 200; the width of the first connecting section 140 gradually increases, which further improves the strength of the first connection, and the width of the connecting protrusion 120 can be increased as much as possible, thereby further enhancing the connection strength between the first connecting section 140 and the second bone plate 200.

[0065] In an optional solution of an embodiment of the present invention, the second bone fracture plate 200 includes a second bone fracture segment 220 and a second connecting segment 230; one end of the second connecting segment 230 is connected to the second bone fracture segment 220, and the other end is provided with a connecting groove 210, and the locking pressure hole 110 is provided in the second bone fracture segment 220; the thickness of the second connecting segment 230 gradually increases from the end close to the second bone fracture segment 220 to the end away from the second bone fracture segment 220; and / or the width of the second connecting segment 230 gradually increases from the end close to the second bone fracture segment 220 to the end away from the second bone fracture segment 220.

[0066] Specifically, in this embodiment, see Figure 2 and Figure 6 The thickness of the second connecting segment 230 gradually increases from the end closest to the second bone fixing segment 220 to the end further away from the second bone fixing segment 220; and the width of the second connecting segment 230 gradually increases from the end closest to the second bone fixing segment 220 to the end further away from the second bone fixing segment 220. Furthermore, the thickness and width of the second connecting segment 230 match those of the first connecting segment 140.

[0067] The thickness of the second connecting section 230 gradually increases, which improves the strength of the second connecting section 230, and the thickness of the connecting groove 210 can be increased as much as possible, thereby enhancing the connection strength between the second connecting section 230 and the connecting protrusion 120; the width of the second connecting section 230 gradually increases, which further improves the strength of the second connection, and the width of the connecting groove 210 is increased as much as possible, thereby further enhancing the connection strength between the second connecting section 230 and the first connecting section 140.

[0068] In an optional solution of the embodiment of the present invention, a mounting protrusion 231 is provided on the outer wall of the second connecting section 230 , and the first mounting hole 211 extends from the mounting protrusion 231 to the connecting groove 210 .

[0069] Specifically, see Figure 5 The mounting protrusion 231 and the second connecting section 230 are integrally formed.

[0070] The first mounting hole 211 extends from the top wall of the mounting protrusion 231 to the side wall of the connecting groove 210. The mounting protrusion 231 increases the depth of the first mounting hole 211, increases the number of internal threads in the first mounting hole 211, and thereby enhances the connection strength between the limit member 400 and the first mounting hole 211.

[0071] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0072] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A bone plate assembly capable of axial micro-movement, characterized in that: It comprises a first bone fracture plate (100), a second bone fracture plate (200) and a plurality of locking screws (300); The first bone plate (100) and the second bone plate (200) are coaxially arranged, and the first bone plate (100) and the second bone plate (200) are movably connected so that the first bone plate (100) and the second bone plate (200) can move toward or away from each other; The first bone plate (100) and the second bone plate (200) are both provided with a plurality of locking pressure holes (110), wherein the plurality of locking pressure holes (110) located on the first bone plate (100) are arranged at intervals along the axial direction of the first bone plate (100) and pass through the first bone plate (100) along the thickness direction of the first bone plate (100); the plurality of locking pressure holes (110) located on the second bone plate (200) are arranged at intervals along the axial direction of the second bone plate (200) and pass through the second bone plate (200) along the thickness direction of the second bone plate (200); The plurality of locking screws (300) are matched with the plurality of locking pressure holes (110) in a one-to-one correspondence.

2. The axially movable bone plate assembly according to claim 1, characterized in that: The bone plate assembly further includes a limiting member (400), and a connecting protrusion (120) is provided at one end of the first bone plate (100) close to the second bone plate (200), and the connecting protrusion (120) is provided with a through hole (121); A connecting groove (210) is provided at one end of the second bone fracture plate (200) close to the first bone fracture plate (100), and a first mounting hole (211) is provided on a side wall of the connecting groove (210); The connecting protrusion (120) is inserted into the connecting groove (210), and a first gap (a) is left between the connecting protrusion (120) and the bottom wall of the connecting groove (210); the limiting member (400) is connected to the first mounting hole (211) and extends into the through hole (121); and a second gap (b) is left between the limiting member (400) and the through hole (121).

3. The axially movable bone plate assembly according to claim 2, characterized in that: The second gap (b) is smaller than or equal to the first gap (a).

4. The axially movable bone plate assembly according to claim 2, characterized in that: The limiting member (400) is threadedly connected to the first mounting hole (211).

5. The bone plate assembly capable of axial micro-movement according to claim 2, characterized in that: The limiting member (400) is engaged with the first mounting hole (211).

6. The bone plate assembly capable of axial micro-movement according to claim 2, characterized in that: The limiting member (400) is bonded to the first mounting hole (211).

7. The bone plate assembly capable of axial micro-movement according to claim 2, characterized in that: A second mounting hole (212) is provided on a side wall of the connecting groove (210) opposite to the first mounting hole (211); the limiting member (400) is connected to the first mounting hole (211) and passes through the through hole (121) and the second mounting hole (212) in sequence.

8. The bone plate assembly capable of axial micro-movement according to claim 2, characterized in that: The first bone fracture plate (100) comprises a first bone fracture section (130) and a first connecting section (140); One end of the first connecting section (140) is connected to the first bone-setting section (130), and the other end is provided with the connecting protrusion (120), and the locking pressure hole (110) is provided in the first bone-setting section (130); The thickness of the first connecting section (140) gradually increases from an end close to the first bone-setting section (130) to an end close to the connecting protrusion (120); and / or the width of the first connecting section (140) gradually increases from an end close to the first bone-setting section (130) to an end close to the connecting protrusion (120).

9. The bone plate assembly capable of axial micro-movement according to claim 2, characterized in that: The second bone fracture plate (200) comprises a second bone fracture section (220) and a second connecting section (230); One end of the second connecting section (230) is connected to the second bone-setting section (220), and the other end is provided with the connecting groove (210), and the locking pressure hole (110) is provided in the second bone-setting section (220); The thickness of the second connecting section (230) gradually increases from one end close to the second bone fixing section (220) to one end away from the second bone fixing section (220); and / or the width of the second connecting section (230) gradually increases from one end close to the second bone fixing section (220) to one end away from the second bone fixing section (220).

10. The axially micro-movable bone plate assembly according to claim 9, characterized in that: An outer wall of the second connecting section (230) is provided with a mounting protrusion (231), and the first mounting hole (211) extends from the mounting protrusion (231) to the connecting groove (210).

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