Bone segment fixing device

Abstract

The invention provides a bone segment fixing device. The bone segment fixing device comprises a cylinder; the first clamping plate is movably mounted in the barrel in the radial direction of the barrel; the first driving part is arranged on the barrel and drives the first clamping plate to move; the first pushing piece is movably arranged on the side wall of the barrel and corresponds to the first clamping plate to form a first clamping space; the first osteotomy groove is formed in the side wall of the cylinder body in the axis direction of the cylinder body and penetrates through the side wall of the cylinder body in the inside-outside direction of the cylinder body, the first osteotomy groove is located above the first driving part, and the first osteotomy groove and the first pushing part are arranged in the circumferential direction of the cylinder body at intervals. According to the technical scheme, the problem that in the prior art, the bone segment splitting effect is poor is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a bone segment fixing device. Background Art

[0002] Osteotomy is a common procedure in orthopedic surgery. Taking developmental dysplasia of the hip (DDH) as an example, it is one of the common diseases that require osteotomy. Its symptoms are that the femoral head loses its normal relationship with the acetabulum in the joint capsule, resulting in abnormal development before and after birth. After the cut bone segment is split, it can be re-tied and fixed to the osteotomy end for maximum rational utilization. This can increase the stability of the osteotomy end and reduce the use of high-value consumables such as steel plates or allogeneic bone plates. Splitting the cut bone segment is a time-consuming, labor-intensive, and crucial and necessary step.

[0003] In the related art, the splitting of bone segments requires the cooperation of multiple people to support and fix. This is not only time-consuming and labor-intensive, but also difficult to ensure the centering and flatness of the osteotomy surface, affecting the fixation effect; it is also easy to cause contamination of the bone segments, affecting their use. Summary of the invention

[0004] The main purpose of the present invention is to provide a bone segment fixing device to solve the problem of poor effect of bone segment splitting in the related art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a bone segment fixing device, comprising: a cylinder; a first splint, which is movably installed inside the cylinder along the radial direction of the cylinder; a first driving member, which is arranged on the cylinder and drives the first splint to move; a first pushing member, which is movably arranged on the side wall of the cylinder and is arranged corresponding to the first splint to form a first clamping space; a first osteotomy groove, which is arranged on the side wall of the cylinder along the axial direction of the cylinder and penetrates the side wall of the cylinder along the inner and outer directions of the cylinder, the first osteotomy groove is located above the first driving member, and the first osteotomy groove and the first pushing member are arranged at intervals along the circumference of the cylinder.

[0006] Furthermore, the bone segment fixation device also includes a second splint and a second driving member. The second splint and the first splint are arranged opposite to each other. The second splint is movably installed inside the cylinder along the radial direction of the cylinder. The second driving member is arranged on the cylinder and drives the second splint to move. The first splint and the second splint can move away from or approach each other.

[0007] Further, the first driving member includes a first stud, the second driving member includes a second stud, the first clamping plate has a first threaded hole matched with the first stud, and the second clamping plate has a second threaded hole matched with the second stud.

[0008] Further, the first stud is connected to the second stud, and the hand direction of the thread of the first stud is opposite to the hand direction of the thread of the second stud.

[0009] Furthermore, a support plate is provided inside the cylinder, a guide groove is provided on the support plate, and the first clamping plate and the second clamping plate are movably provided in the guide groove.

[0010] Further, a first guide portion is disposed on the top of the first clamping plate, and / or a second guide portion is disposed on the top of the second clamping plate.

[0011] Furthermore, the bone segment fixing device further comprises a second ejecting member, which is movably disposed on the side wall of the cylinder and is disposed corresponding to the second clamping plate to form a second clamping space.

[0012] Furthermore, the bone segment fixing device also includes a seat body, the cylinder body is detachably mounted on the seat body, a mounting cavity is arranged inside the seat body, and the bottom of the first splint and the bottom of the second splint are both located in the mounting cavity.

[0013] Furthermore, a first groove body and a second groove body are provided on the side wall of the seat body, and a first mouth and a second mouth are provided on the top wall of the seat body. The first mouth is connected to an end of the first groove body, and the second mouth is connected to an end of the second groove body. The first mouth and the second mouth are symmetrically arranged relative to the axis of the seat body. The first driving member can enter into the first groove body through the first mouth, and the second driving member can enter into the second groove body through the second mouth. The first driving member has a first disassembly and assembly position corresponding to the first mouth, and the first driving member has a first limit position installed in the first groove body. When the first driving member is located at the first disassembly and assembly position, the second driving member is located at the second disassembly and assembly position corresponding to the first mouth, and when the first driving member is located at the first limit position, the second driving member is located at the second limit position installed in the second groove body.

[0014] Furthermore, the bone segment fixing device also includes a second osteotomy groove, which is arranged on the cylinder and opposite to the first osteotomy groove, and the plane where the center line of the first osteotomy groove and the center line of the second osteotomy groove are located is perpendicular to the axis of the first push piece; the bone segment fixing device also includes a fixing cover, which is arranged at the end of the cylinder away from the seat body, and the fixing cover is arranged on the third osteotomy groove, and the center lines of the first osteotomy groove, the second osteotomy groove and the third osteotomy groove are all located on the same plane.

[0015] Furthermore, a first anti-rotation surface is provided on the outer wall of the cylinder, and a first matching surface is provided on the fixing cover. When the fixing cover is installed on the cylinder, the first anti-rotation surface and the first matching surface are anti-rotationally matched. The bone segment fixing device also includes a counterweight block, a mounting hole is provided on the counterweight block, and the seat body is installed in the mounting hole; a second matching surface is provided in the mounting hole, and a second anti-rotation surface is provided on the seat body. When the seat body is installed in the mounting hole, the second anti-rotation surface and the second matching surface are anti-rotationally matched.

[0016] By applying the technical solution of the present invention, the first clamping plate is movably installed inside the cylinder along the radial direction of the cylinder, and the first driving member is arranged on the cylinder and drives the first clamping plate to move. The first ejecting member is movably arranged on the side wall of the cylinder and is arranged corresponding to the first clamping plate to form a first clamping space. The first osteotomy groove is arranged on the side wall of the cylinder along the axial direction of the cylinder, the first osteotomy groove penetrates the side wall of the cylinder along the inner and outer directions of the cylinder, the first osteotomy groove is located above the first driving member, and the first osteotomy groove and the first ejecting member are arranged at intervals along the circumferential direction of the cylinder. Through the above arrangement, the first clamping plate can be moved under the action of the first driving member, and the first push member and the first clamping plate are correspondingly arranged to form a first clamping space. Specifically, the first clamping plate is first driven by the first driving member to move toward the center of the cylinder, thereby increasing the first clamping space, and the bone segment is installed in the first clamping space, and then the first driving member and the first push member are used to reduce the first clamping space, thereby effectively fixing the bone segment, and because the first osteotomy groove is provided, when the bone segment is split by the swing saw, the first osteotomy groove can play a role of avoidance and guidance, thereby achieving a better osteotomy effect. Therefore, the technical solution of the present application effectively solves the problem of poor bone segment splitting effect in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the exploded structure of an embodiment of a bone segment fixation device according to the present invention is shown;

[0019] Figure 2 Shows Figure 1 A cross-sectional schematic diagram of a bone segment fixation device;

[0020] Figure 3 Shows Figure 1 A three-dimensional structural schematic diagram of a partial structure of a bone segment fixation device;

[0021] Figure 4 Shows Figure 3 A schematic diagram of the three-dimensional structure of a seat body;

[0022] Figure 5 Shows Figure 1 A schematic diagram of the three-dimensional structure of a cylindrical body of a bone segment fixation device;

[0023] Figure 6 Shows Figure 1 A schematic diagram of the three-dimensional structure of a first splint and a second splint of a bone segment fixing device;

[0024] Figure 7 Shows Figure 1 A schematic diagram of the three-dimensional structure of a counterweight block of a bone segment fixation device;

[0025] Figure 8 Shows Figure 1 A schematic top view of a partial structure of a bone segment fixation device;

[0026] Fig. 9 Shows Figure 8 Schematic cross-sectional view of a bone segment fixation device.

[0027] The above drawings include the following reference numerals:

[0028] 10. Cylinder body; 11. Support plate; 111. Guide groove; 12. First anti-rotation surface; 20. First clamping plate; 21. First threaded hole; 22. First guide part; 30. First driving member; 31. First stud; 40. First ejector member; 50. First osteotomy groove; 60. Second clamping plate; 61. Second threaded hole; 62. Second guide part; 70. Second driving member; 71. Second stud; 80. Second ejector member; 90. Base body; 91. Mounting cavity; 92. First groove body; 93. Second groove body; 94. First mouth; 95. Second mouth; 96. Second anti-rotation surface; 110. Second osteotomy groove; 120. Fixing cover; 121. Third osteotomy groove; 130. Counterweight block; 131. Mounting hole; 1311. Second mating surface. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0032] like Figure 1 , Figure 2 , Figure 8 as well as Fig. 9 As shown, in this embodiment, the bone segment fixing device includes: a cylinder 10, a first splint 20, a first driving member 30, a first push member 40 and a first osteotomy groove 50. The first splint 20 is movably mounted inside the cylinder 10 along the radial direction of the cylinder 10. The first driving member 30 is arranged on the cylinder 10 and drives the first splint 20 to move. The first push member 40 is movably arranged on the side wall of the cylinder 10 and is arranged corresponding to the first splint 20 to form a first clamping space. The first osteotomy groove 50 is arranged on the side wall of the cylinder 10 along the axial direction of the cylinder 10 and penetrates the side wall of the cylinder 10 along the inner and outer directions of the cylinder 10. The first osteotomy groove 50 is located above the first driving member 30, and the first osteotomy groove 50 and the first push member 40 are arranged at intervals along the circumferential direction of the cylinder 10.

[0033] By applying the technical solution of this embodiment, the first clamping plate 20 is movably mounted inside the cylinder 10 along the radial direction of the cylinder, and the first driving member 30 is arranged on the cylinder 10 and drives the first clamping plate 20 to move. The first ejecting member 40 is movably arranged on the side wall of the cylinder 10 and is arranged corresponding to the first clamping plate 20 to form a first clamping space. The first osteotomy groove 50 is arranged on the side wall of the cylinder 10 along the axial direction of the cylinder 10, and the first osteotomy groove 50 penetrates the side wall of the cylinder 10 along the inner and outer directions of the cylinder 10, and the first osteotomy groove 50 is located above the first driving member 30, and the first osteotomy groove 50 and the first ejecting member 40 are arranged at intervals along the circumferential direction of the cylinder 10. Through the above arrangement, the first clamping plate 20 can be moved under the action of the first driving member 30, and the first push member 40 and the first clamping plate 20 are correspondingly arranged to form a first clamping space. Specifically, the first driving member 30 is used to drive the first clamping plate 20 to move toward the center of the cylinder 10, thereby increasing the first clamping space, and installing the bone segment in the first clamping space, and then the first driving member 30 and the first push member 40 are used to reduce the first clamping space, thereby effectively fixing the bone segment, and because the first osteotomy groove 50 is provided, when the bone segment is split by the swing saw, the first osteotomy groove 50 can play a role of avoidance and guidance, thereby achieving a better osteotomy effect. Therefore, the technical solution of this embodiment effectively solves the problem of poor effect of splitting the bone segment in the related art.

[0034] Specifically, the bone segment is installed in the cylinder 10, and the side wall of the bone segment is clamped in the first clamping space.

[0035] Specifically, when performing osteotomy, the debris generated can be accumulated in the cylinder 10, which makes it easier to clean the debris.

[0036] like Figures 1 to 3 as well as Figure 8 and Fig. 9 As shown, in this embodiment, the bone segment fixing device further includes a second splint 60 and a second driving member 70. The second splint 60 and the first splint 20 are arranged relative to each other. The second splint 60 is movably installed inside the cylinder 10 along the radial direction of the cylinder 10. The second driving member 70 is arranged on the cylinder 10 and drives the second splint 60 to move. The first splint 20 and the second splint 60 can move away from each other or approach each other. The first splint 20 and the second splint 60 are arranged relative to each other. Under the action of the first driving member 30 and the second driving member 70, the first splint 20 and the second splint 60 can move closer to each other or away from each other, so that the position of the bone segment can be more stable. Specifically, when fixing, the first splint 20 and the first push member 40 clamp the bone segment, and the bone segment can also be clamped between the second splint 60 and the cylinder 10.

[0037] like Figures 1 to 3 , Figure 6 , Figure 8 as well as Fig. 9 As shown, in this embodiment, the first driving member 30 includes a first stud 31, the second driving member 70 includes a second stud 71, the first clamping plate 20 has a first threaded hole 21 that cooperates with the first stud 31, and the second clamping plate 60 has a second threaded hole 61 that cooperates with the second stud 71. The first stud 31 and the second stud 71 have a simple structure, are easy to set, and have a simple driving method. Specifically, the first stud 31 rotates, and since the first clamping plate 20 is located in the cylinder 10, the inner wall of the cylinder 10 can limit the first clamping plate 20, thereby preventing the first clamping plate 20 from rotating with the first stud 31, and then when the first stud 31 rotates, the first clamping plate 20 can move along the axis of the first stud 31. Similarly, the matching method of the second clamping plate 60 and the second stud 71 is the same as the matching method of the first clamping plate 20 and the first stud 31.

[0038] A first arc-shaped portion is disposed at the bottom of the first clamping plate 20 , and a second arc-shaped portion is disposed at the bottom of the second clamping plate 60 . The arrangement of the first arc-shaped portion and the second arc-shaped portion can effectively reduce space occupation and avoid interference inside the seat body 90 .

[0039] like Figures 1 to 3 , Figure 6 , Figure 8 as well as Fig. 9 As shown, in this embodiment, the first stud 31 and the second stud 71 are connected, and the rotation direction of the thread of the first stud 31 is opposite to that of the thread of the second stud 71. The above arrangement can effectively reduce the difficulty of driving. Specifically, the first stud 31 and the second stud 71 can be rotated synchronously by simply rotating the first stud 31 or the second stud 71. Since the rotation directions of the threads of the first stud 31 and the second stud 71 are opposite, the first clamping plate 20 and the second clamping plate 60 can be driven to be relatively close to or relatively far away from each other when the first stud 31 and the second stud 71 rotate.

[0040] like Figures 1 to 5 As shown, in this embodiment, a support plate 11 is provided inside the cylinder 10, and a guide groove 111 is provided on the support plate 11, and the first clamping plate 20 and the second clamping plate 60 are movably provided in the guide groove 111. The structure of the support plate is simple, and the distance between the support plate 11 and the top of the cylinder 10 is greater than the distance between the support plate 11 and the bottom of the cylinder 10. The support plate 11 can support the bone segment, and because the guide groove 111 is provided on the support plate 11, the guide groove 111 can guide the first clamping plate 20 and the second clamping plate 60, and at the same time can prevent the first clamping plate 20 and the second clamping plate 60 from rotating along with the first stud 31 and the second stud 71.

[0041] like Figures 1 to 3 , Figure 6 , Figure 8 as well as Fig. 9 As shown, in this embodiment, a first guide portion 22 is provided on the top of the first splint 20, and / or a second guide portion 62 is provided on the top of the second splint 60. The provision of the first guide portion 22 and the second guide portion 62 can guide the bone segment, and prevent the bone segment from interfering with the first splint 20 and the second splint 60 when the bone segment is sleeved on the first splint 20 and the second splint 60. Specifically, the first guide portion 22 includes a first cone portion, and the second guide portion 62 includes a second cone portion.

[0042] like Figures 1 to 3 , Figure 6 , Figure 8 as well as Fig. 9 As shown, in this embodiment, the bone segment fixing device further includes a second push piece 80, which is movably disposed on the side wall of the cylinder 10 and is disposed corresponding to the second clamping plate 60 to form a second clamping space. The second push piece 80 can further clamp the bone segment, which can achieve a better fixation effect on the bone segment.

[0043] Specifically, the first ejector 40 includes a first threaded rod, and the second ejector 80 includes a second threaded rod.

[0044] Of course, in an embodiment not shown in the drawings, the first ejector member includes a first cylinder, and the second ejector member includes a second cylinder.

[0045] like Figures 1 to 4 As shown, in this embodiment, the bone segment fixing device further includes a seat body 90, on which the cylinder body 10 is detachably mounted, and an installation cavity 91 is provided inside the seat body 90, wherein the bottom of the first splint 20 and the bottom of the second splint 60 are both located in the installation cavity 91. The arrangement of the seat body 90 makes the position of the cylinder body 10 more stable and can effectively support the cylinder body 10.

[0046] like Figures 1 to 4As shown, in the present embodiment, a first slot body 92 and a second slot body 93 are provided on the side wall of the seat body 90, and a first opening 94 and a second opening 95 are provided on the top wall of the seat body 90. The first opening 94 is connected to the end of the first slot body 92, and the second opening 95 is connected to the end of the second slot body 93. The first opening 94 and the second opening 95 are symmetrically arranged with respect to the axis of the seat body 90. The first driving member 30 can enter into the first slot body 92 through the first opening 94, and the second driving member 70 can enter into the second slot body 93 through the second opening 95. The first driving member 30 has a first disassembly and assembly position corresponding to the first opening 94, and the first driving member 30 has a first limiting position installed in the first slot body 92. When the first driving member 30 is located at the first disassembly and assembly position, the second driving member 70 is located at the second disassembly and assembly position corresponding to the first opening 94. When the first driving member 30 is located at the first limiting position, the second driving member 70 is located at the second limiting position installed in the second slot body 93. The above-mentioned arrangement makes it easier to connect the cylinder 10 and the seat 90. Specifically, the first drive member 30 and the second drive member 70 are installed in the first groove body 92 and the second groove body 93 through the first mouth 94 and the second mouth 95. The cylinder 10 is rotated so that the first drive member 30 is located at the end of the first groove body 92 away from the first mouth 94, and the second drive member 70 is located at the end of the second groove body 93 away from the second mouth 95. Similarly, when the cylinder 10 is removed from the seat 90, it is only necessary to rotate the cylinder 10.

[0047] like Figure 1 , Figure 2 as well as Figure 5 As shown, in this embodiment, the bone segment fixing device further includes a second osteotomy groove 110, which is arranged on the cylinder 10 and opposite to the first osteotomy groove 50, and the plane where the center line of the first osteotomy groove 50 and the center line of the second osteotomy groove 110 are located is perpendicular to the axis of the first push member 40; the bone segment fixing device further includes a fixing cover 120, which is arranged on the end of the cylinder 10 away from the seat 90, and the fixing cover 120 is arranged with a third osteotomy groove 121, and the center lines of the first osteotomy groove 50, the second osteotomy groove 110 and the third osteotomy groove 121 are all located on the same plane. The setting of the fixing cover 120 can prevent the debris generated during osteotomy from falling out of the cylinder 10, thus ensuring the cleanliness of the surrounding environment. Specifically, when performing osteotomy, the oscillating saw is extended into the cylinder 10 through the third osteotomy groove 121, and osteotomy can be better achieved under the avoidance effect of the first osteotomy groove 50 and the second osteotomy groove 110.

[0048] like Figures 1 to 9As shown, in this embodiment, a first anti-rotation surface 12 is provided on the outer wall of the cylinder 10, and a first matching surface is provided on the fixing cover 120. When the fixing cover 120 is installed on the cylinder 10, the first anti-rotation surface 12 and the first matching surface are anti-rotationally matched; the bone segment fixing device also includes a counterweight block 130, a mounting hole 131 is provided on the counterweight block 130, and the seat 90 is installed in the mounting hole 131; a second matching surface 1311 is provided in the mounting hole 131, and a second anti-rotation surface 96 is provided on the seat 90. When the seat 90 is installed in the mounting hole 131, the second anti-rotation surface 96 and the second matching surface 1311 are anti-rotationally matched. The above-mentioned arrangement can effectively prevent the cylinder 10 and the fixing cover 120 from rotating, and can prevent the seat 90 and the counterweight block 130 from rotating. At the same time, under the action of the counterweight block 130, the overall structure of the bone segment fixing device can be made more stable.

[0049] The use process of the bone segment fixation device of this embodiment is as follows:

[0050] Step 1: Adjust the first push member 40 and the second push member 80 to the maximum position, adjust the first drive member 30 and the second drive member 70 to the minimum position, and place the cut bone segment into the cylinder 10;

[0051] Step 2: Rotate the first driving member 30 or the second driving member 70 along the direction indicated by the scale on the cylinder 10 to tighten the interior of the medullary cavity of the bone segment;

[0052] Step 3: According to the needs, rotate the first push piece 40 and the second push piece 80 along the direction indicated by the scale on the cylinder 10 to clamp the bone segment from the outside to ensure that the bone segment does not loosen during the osteotomy process;

[0053] Step 4: Place the cylinder 10 into the seat 90 to complete the locking.

[0054] Step 5: Use an oscillating saw to perform oscillating cutting downward along the third osteotomy groove 121 to complete the bone segment cutting;

[0055] Step 6: Rotate the cylinder 10 to separate it from the counterweight 130, release the first ejecting member 40, the second ejecting member 80, the first driving member 30 and the second driving member 70, and take out the severed bone segment for subsequent surgical operations.

[0056] In an embodiment not shown in the figures, the first driving member includes a first telescopic cylinder, the second driving member includes a second telescopic cylinder, the first driving member and the first pushing member move synchronously, and the movement directions are opposite, the second driving member and the second pushing member move synchronously, and the movement directions are opposite. Specifically, the controller is electrically connected to the first driving member, the second driving member, the first pushing member and the second pushing member, and the operator uses the controller to control the first driving member, the second driving member, the first pushing member and the second pushing member, thereby clamping the bone segment. Such a setting can effectively improve the efficiency of the operation.

[0057] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bone segment fixation device, characterized in that: include: Cylinder (10); A first clamping plate (20) is movably mounted inside the cylinder (10) along the radial direction of the cylinder (10); A first driving member (30) is disposed on the cylinder (10) and drives the first clamping plate (20) to move; A first ejector (40) is movably disposed on the side wall of the cylinder (10) and is disposed corresponding to the first clamping plate (20) to form a first clamping space; A first osteotomy groove (50) is arranged on the side wall of the cylinder (10) along the axial direction of the cylinder (10) and penetrates the side wall of the cylinder (10) along the inner and outer directions of the cylinder (10). The first osteotomy groove (50) is located above the first driving member (30). The first osteotomy groove (50) and the first ejecting member (40) are arranged at intervals along the circumference of the cylinder (10).

2. The bone segment fixation device according to claim 1, characterized in that: The bone segment fixing device further comprises a second splint (60) and a second driving member (70); the second splint (60) and the first splint (20) are arranged opposite to each other; the second splint (60) is movably mounted inside the cylinder (10) along the radial direction of the cylinder (10); the second driving member (70) is arranged on the cylinder (10) and drives the second splint (60) to move; the first splint (20) and the second splint (60) can move away from or approach each other.

3. The bone segment fixation device according to claim 2, characterized in that: The first driving member (30) includes a first stud (31), the second driving member (70) includes a second stud (71), the first clamping plate (20) has a first threaded hole (21) matching with the first stud (31), and the second clamping plate (60) has a second threaded hole (61) matching with the second stud (71).

4. The bone segment fixation device according to claim 3, characterized in that: The first stud (31) and the second stud (71) are connected, and the direction of rotation of the thread of the first stud (31) is opposite to the direction of rotation of the thread of the second stud (71).

5. The bone segment fixation device according to claim 2, characterized in that: A support plate (11) is arranged inside the cylinder (10), a guide groove (111) is arranged on the support plate (11), and the first clamping plate (20) and the second clamping plate (60) are movably arranged in the guide groove (111).

6. The bone segment fixation device according to claim 2, characterized in that: A first guide portion (22) is provided at the top of the first clamping plate (20), and / or a second guide portion (62) is provided at the top of the second clamping plate (60).

7. The bone segment fixation device according to claim 2, characterized in that: The bone segment fixing device further comprises a second ejector (80), which is movably arranged on the side wall of the cylinder (10) and is arranged corresponding to the second clamping plate (60) to form a second clamping space.

8. The bone segment fixation device according to claim 2, characterized in that: The bone segment fixing device further comprises a seat body (90), the cylinder body (10) is detachably mounted on the seat body (90), a mounting cavity (91) is arranged inside the seat body (90), and the bottom of the first splint (20) and the bottom of the second splint (60) are both located in the mounting cavity (91).

9. The bone segment fixation device according to claim 8, characterized in that: A first groove body (92) and a second groove body (93) are provided on the side wall of the seat body (90); a first opening (94) and a second opening (95) are provided on the top wall of the seat body (90); the first opening (94) is connected to an end of the first groove body (92); the second opening (95) is connected to an end of the second groove body (93); the first opening (94) and the second opening (95) are symmetrically arranged relative to the axis of the seat body (90); the first driving member (30) can enter into the first groove body (92) through the first opening (94); and the second driving member (70) can be driven by the first driving member (70) through the first opening (94). The second groove body (93) can be entered through the second opening (95), the first driving member (30) has a first disassembly and assembly position corresponding to the first opening (94), the first driving member (30) has a first limit position installed in the first groove body (92), when the first driving member (30) is located at the first disassembly and assembly position, the second driving member (70) is located at the second disassembly and assembly position corresponding to the first opening (94), when the first driving member (30) is located at the first limit position, the second driving member (70) is located at the second limit position installed in the second groove body (93).

10. The bone segment fixation device according to claim 8, characterized in that: The bone segment fixing device further comprises a second osteotomy groove (110), which is arranged on the cylinder (10) and is arranged opposite to the first osteotomy groove (50), and the plane where the center line of the first osteotomy groove (50) and the center line of the second osteotomy groove (110) are located is perpendicular to the axis of the first push member (40); the bone segment fixing device further comprises a fixing cover (120), which is arranged on the end of the cylinder (10) away from the seat (90), and the fixing cover (120) is arranged on a third osteotomy groove (121), and the center line of the first osteotomy groove (50), the center line of the second osteotomy groove (110) and the center line of the third osteotomy groove (121) are all located on the same plane.

11. The bone segment fixation device according to claim 10, characterized in that: The outer wall of the cylinder (10) is provided with a first anti-rotation surface (12), and the fixing cover (120) is provided with a first matching surface. When the fixing cover (120) is installed on the cylinder (10), the first anti-rotation surface (12) and the first matching surface are anti-rotationally matched. The bone segment fixing device also includes a counterweight block (130). The counterweight block (130) is provided with a mounting hole (131), and the seat body (90) is installed in the mounting hole (131). A second matching surface (1311) is provided in the mounting hole (131), and the seat body (90) is provided with a second anti-rotation surface (96). When the seat body (90) is installed in the mounting hole (131), the second anti-rotation surface (96) and the second matching surface (1311) are anti-rotationally matched.

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