Long-segment bone defect model construction device

Abstract

The utility model discloses a long-segment bone defect model construction device which comprises a clamping component and a bone saw guide groove. The two groups of clamping parts are respectively used for clamping two parts on the long bone; a rectangular through groove is vertically formed in the bone saw guide groove, and a bone saw penetrates through the through groove and is positioned through the through groove; the clamping part comprises a fixed seat and clamping plates, the clamping plates are rotatably connected below the front side and the rear side of the fixed seat, an arc-shaped friction surface is arranged on the inner side of the bottom of each clamping plate, and the arc-shaped friction surfaces are used for ensuring the clamping stability when the arc-shaped friction surfaces are in contact with a sample; a screw rod is rotationally connected to the center of the fixed seat, the screw rod vertically penetrates through the fixed seat, and meanwhile, the screw rod is in threaded connection with a moving nut; the clamping device is convenient, stable and reliable in clamping; the sample truncation length is flexibly adjusted as required; and the axial size of clamping is relatively flexible and adjustable.

Description

Technical Field

[0001] The utility model relates to the field of model preparation equipment, in particular to a long-segment bone defect model construction device. Background Technique

[0002] Bone defect experiments are an important means to study bone defect diseases. The bones of some large animals (such as sheep) are similar to human bones in terms of size, microstructure, bone healing rate, mechanical properties, etc., and are particularly suitable for bone healing research. Large animal long bone defect experiments require the construction of bone defect models, that is, a certain size of bone is cut off from the long bone, and then the treatment effects of different treatment methods are observed. Therefore, how to construct a standard and repeatable bone defect model is crucial for obtaining scientific experimental results. At present, the production of bone defect models generally uses a ruler as a measuring tool, and a pendulum saw is used to cut off the bone segment of the required length, which cannot guarantee the dimensional accuracy of the cut bone segment, seriously affecting the accuracy and reliability of the experimental results; there are also some devices in the prior art that can fix and clamp bones.

[0003] For example, the patent with the authorization announcement number CN220492577U discloses an osteotomy guiding device, including: a measuring rod, on which measuring scales are provided; an osteotomy guiding rod, which is adjustably arranged on the measuring rod, the osteotomy guiding rod is arranged at an angle with the measuring rod and has an osteotomy guiding groove; a fixing structure, which is arranged on the measuring rod to fix the position of the measuring rod.

[0004] The above patent fixes the sample through a clamping pliers, and then locates the truncation part by adjusting the position of the osteotomy guiding rod on the measuring rod; however, the disadvantage of the above patent is that the overall structure of the clamping pliers is too large, resulting in an insufficiently simple overall structure.

[0005] Therefore, it is necessary to improve such a structure to overcome the above defects. Utility Model Content

[0006] The purpose of the utility model is to provide a long-segment bone defect model construction device to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A long-segment bone defect model construction device, including:

[0009] Clamping components, two groups of the clamping components are provided, which are respectively used for clamping at two places on the long bone;

[0010] A bone saw guide groove, which is located inside the clamping component, and a rectangular through groove is vertically opened on the bone saw guide groove, and this through groove is used for the bone saw to pass through and be positioned;

[0011] A square screw rod, which is connected between two groups of clamping components and is used to adjust the distance between the clamping components.

[0012] Furthermore, the clamping component includes a fixed seat and a clamping plate. The lower parts of the front and rear sides of the fixed seat are rotatably connected with the clamping plates. A clamping screw rod is rotatably connected at the center of the fixed seat. The clamping screw rod vertically penetrates through the fixed seat. At the same time, a moving nut is threadedly connected to the clamping screw rod. One ends of connecting arms are rotatably connected to the front and rear sides of the moving nut, and the other ends of the connecting arms are rotatably connected to the middle parts of the inner sides of the clamping plates.

[0013] Still further, an arc-shaped friction surface is arranged on the inner side of the bottom of the clamping plate, and the arc-shaped friction surface is used to ensure the stability of clamping when contacting with the sample.

[0014] Still further, a knob is fixedly installed at the top of the clamping screw rod.

[0015] Still further, the lower end of the clamping screw rod is arranged in a conical shape to avoid the influence on clamping caused by the size of the screw rod itself during the clamping process.

[0016] Still further, a bearing installation groove is opened at the top of the fixed seat. The bearing installation groove vertically penetrates through the fixed seat. A rotating bearing is fixedly installed in the bearing installation groove. At the same time, a snap ring is arranged at the top of the rotating bearing. The snap ring is stuck at the top of the bearing installation groove to prevent the rotating bearing from slipping out of the bearing installation groove. The top of the clamping screw rod is fixedly installed in the inner ring of the rotating bearing, and the clamping screw rod is rotatably connected with the fixed seat through the rotating bearing.

[0017] Furthermore, the bone saw guide groove is located inside the clamping component, and the bone saw guide groove is integrally formed with the fixed seat. At the same time, a horizontally arranged square screw rod is connected to the inner side of one of the bone saw guide grooves. The square screw rod is integrally rectangular. The corners of the four sides of the square screw rod are arranged in an arc shape, and adjusting threads are arranged at the arc-shaped corners.

[0018] Furthermore, a scale is arranged at the top of the square screw rod. When rotating the adjusting nut, the visible scale value on the square screw rod can be changed. At this time, it is convenient for the operator to observe the scale to determine the truncated target length.

[0019] Still further, an adjusting nut installation part is horizontally arranged on the other bone saw guide groove. An adjusting nut is installed in the adjusting nut installation part, and the adjusting nut meshes with the adjusting thread on the square screw rod.

[0020] Furthermore, an insertion groove for inserting the square screw is formed on one side of the adjusting nut mounting portion facing the square screw. Meanwhile, an adjusting nut mounting groove is vertically formed on the adjusting nut mounting portion. The adjusting nut mounting groove is communicated with the insertion groove and penetrates through the insertion groove. An adjusting nut is arranged in the adjusting nut mounting groove.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. It is convenient, stable and reliable to clamp;

[0023] 2. The length of the truncated sample can be flexibly adjusted as required;

[0024] 3. The axial dimension of the clamping is relatively flexible and adjustable;

[0025] 4. At the same time, the clamping component is small and does not occupy too much space, and does not interfere with the truncation operation. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a long-segment bone defect model construction device.

[0027] Figure 2 It is a front view of a long-segment bone defect model construction device.

[0028] Figure 3 It is a top view of a long-segment bone defect model construction device.

[0029] Figure 4 It is a side view of a long-segment bone defect model construction device.

[0030] Figure 5 It is a schematic structural diagram inside the fixed seat of a long-segment bone defect model construction device.

[0031] Figure 6 It is a schematic diagram when two clamping components of a long-segment bone defect model construction device are separated. Detailed Embodiments

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0033] Please refer to Figure 1-6 , a device for constructing a long-segment bone defect model, comprising a clamping member 1 and a bone saw guide groove 2;

[0034] There are two sets of the clamping members 1, which are respectively used for clamping at two positions on the long bone;

[0035] A rectangular through groove is vertically opened on the bone saw guide groove 2, and this through groove is used for the bone saw to pass through and be positioned; during use, the bone saw passes through this through groove to saw off the long bone sample;

[0036] The clamping member 1 includes a fixed seat 101 and a clamping plate 102. The lower sides of the front and rear of the fixed seat 101 are rotatably connected with the clamping plate 102. Among them, an arc-shaped friction surface 103 is arranged on the inner side of the bottom of the clamping plate 102, and this arc-shaped friction surface 103 is used to ensure the stability of clamping when contacting the sample;

[0037] A clamping screw 104 is rotatably connected to the center of the fixed seat 101. The clamping screw 104 vertically passes through the fixed seat 101. At the same time, a moving nut 105 is threadedly connected to the clamping screw 104. One end of a connecting arm 106 is rotatably connected to the front and rear sides of the moving nut 105, and the other end of the connecting arm 106 is rotatably connected to the middle part of the inner side of the clamping plate 102;

[0038] At the same time, in order to facilitate the rotation of the clamping screw 104, a knob 107 is fixedly installed at the top of the clamping screw 104;

[0039] When the knob 107 is rotated, the clamping screw 104 rotates accordingly. At this time, the moving nut 105 moves downward, and the connecting arm 106 spreads outwards, thereby driving the two clamping plates 102 to open. At this time, one of the clamping members 1 is aligned with the long bone sample, and the knob is reversed to drive the clamping plate 102 to close and clamp the bone tissue sample;

[0040] Meanwhile, in this solution, when the splints 102 are closed, the two connecting arms 106 will approach each other. At this time, the lower end of the clamping screw 104 is located between the two connecting arms 106. If the clamped bone sample is too thin, the clamping screw 104 will block the connecting arms 106 from approaching each other. To avoid this situation, as Figure 4 shown, in this solution, the lower end of the clamping screw 104 is tapered to prevent the clamping from being affected by the screw's own size during the clamping process.

[0041] As Figure 5 shown, in this solution, a bearing installation groove 108 is provided at the top of the fixed seat 101. The bearing installation groove 108 penetrates the fixed seat 101 in the vertical direction. A rotating bearing 109 is fixedly installed in the bearing installation groove 108. At the same time, a snap ring 110 is provided at the top of the rotating bearing 109. The snap ring 110 is stuck at the top of the bearing installation groove 108 to prevent the rotating bearing 109 from slipping out of the bearing installation groove 108. The top of the clamping screw 104 is fixedly installed in the inner ring of the rotating bearing 109. The clamping screw 104 is rotatably connected to the fixed seat 101 through the rotating bearing 109;

[0042] As Figure 6 shown, the bone saw guide groove 2 is located inside the clamping member 1, and the bone saw guide groove 2 is integrally formed with the fixed seat 101. At the same time, a horizontally arranged square screw 3 is connected to the inner side of one of the bone saw guide grooves 2. The square screw 3 is generally rectangular, and the corners of the four sides of the square screw 3 are rounded. An adjusting thread 301 is provided at the rounded corner; and a scale 302 is provided at the top of the square screw 3;

[0043] Another bone saw guide groove 2 is connected with a horizontally arranged adjusting nut installation part 4. The side of the adjusting nut installation part facing the square screw 3 is provided with an insertion groove 401 for inserting the square screw 3. At the same time, an adjusting nut installation groove 402 is vertically opened on the adjusting nut installation part 4. The adjusting nut installation groove 402 is communicated with the insertion groove 401 and penetrates the insertion groove 401; an adjusting nut 403 is provided in the adjusting nut installation groove 402. The adjusting nut 403 meshes with the adjusting thread 301 on the square screw 3; when the adjusting nut is rotated, since the adjusting nut is located in the adjusting nut installation groove 402 and cannot move horizontally, at this time, the square screw 3 meshes with the adjusting nut 403, which will drive the square screw 3 to move relative to the adjusting nut; the target truncation length can be determined by observing the scale 302 during the movement process.

[0044] When the present utility model is in use, when the clamping member is not yet clamped, the clamping member can slide along the bone surface until the position to be intercepted is determined;

[0045] The specific operation is as follows: First, fix one of the clamping components 1 on the long-segment bone sample. With one clamping component 1 clamped, rotate the adjusting nut 403 and determine the length of the bone tissue to be intercepted by observing the lateral displacement scale value generated by the rotating ruler. After the length is determined; repeat the clamping operation steps of the other clamping component 1 until both sides are fully clamped; at this time, insert the bone saws into the bone saw guide grooves respectively to complete the operation of intercepting and sampling the bone tissue.

[0046] When the length of the bone to be intercepted has been determined, the positions of the two clamping parts can also be fixed by first rotating the adjusting nut 403, and then the clamping component 1 is fixed at the clamping part.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, terms such as "set", "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A device for constructing a long segment bone defect model, characterized in that: include: A clamping component (1), wherein two groups of the clamping components (1) are provided, respectively used to clamp at two locations on the long bone segment; A bone saw guide groove (2), the bone saw guide groove (2) being located on the inner side of the clamping component (1), and a rectangular through groove being vertically opened on the bone saw guide groove (2), and the through groove is used for passing and positioning the bone saw; A square screw (3) is connected between two groups of clamping components (1) and is used to adjust the distance between the clamping components (1).

2. A long segment bone defect model construction device according to claim 1, characterized in that: The clamping component (1) comprises a fixed seat (101) and a clamping plate (102), wherein the clamping plates (102) are rotatably connected to the lower sides of the front and rear sides of the fixed seat (101), and a clamping screw (104) is rotatably connected to the center of the fixed seat (101), and the clamping screw (104) vertically passes through the fixed seat (101). At the same time, a moving nut (105) is threadedly connected to the clamping screw (104), and one end of a connecting arm (106) is rotatably connected to the front and rear sides of the moving nut (105), and the other end of the connecting arm (106) is rotatably connected to the inner middle part of the clamping plate (102).

3. A long segment bone defect model construction device according to claim 2, characterized in that: An arc-shaped friction surface (103) is arranged on the inner side of the bottom of the clamping plate (102), and the arc-shaped friction surface (103) is used to ensure the stability of the clamping when in contact with the sample.

4. The device for constructing a long segment bone defect model according to claim 2, characterized in that: A knob (107) is also fixedly mounted on the top of the clamping screw (104).

5. The device for constructing a long segment bone defect model according to claim 2, characterized in that: The lower end of the clamping screw (104) is arranged in a conical shape to avoid the clamping being affected by the size of the screw itself during the clamping process.

6. The device for constructing a long segment bone defect model according to claim 2, characterized in that: A bearing installation groove (108) is provided at the top of the fixing seat (101), and the bearing installation groove (108) passes through the fixing seat (101) in the vertical direction. A rotating bearing (109) is fixedly installed in the bearing installation groove (108), and a retaining spring (110) is also provided at the top of the rotating bearing (109). The retaining spring (110) is clamped on the top of the bearing installation groove (108) to prevent the rotating bearing (109) from falling out of the bearing installation groove (108). The top of the clamping screw (104) is fixedly installed in the inner ring of the rotating bearing (109), and the clamping screw (104) is rotatably connected to the fixing seat (101) through the rotating bearing (109).

7. The device for constructing a long segment bone defect model according to claim 1, characterized in that: The bone saw guide groove (2) is located on the inner side of the clamping component (1), and the bone saw guide groove (2) and the fixing seat (101) are integrally formed. At the same time, a horizontally arranged square screw (3) is connected to the inner side of one of the bone saw guide grooves (2). The square screw (3) is rectangular as a whole, and the corners of the four sides of the square screw (3) are arranged in arcs, and the corners of the arc arrangement are provided with adjustment threads (301).

8. The device for constructing a long segment bone defect model according to claim 7, characterized in that: The top of the square screw (3) is provided with a scale (302).

9. The device for constructing a long segment bone defect model according to claim 7, characterized in that: Another bone saw guide groove (2) is connected with an adjusting nut mounting portion (4) arranged horizontally, an adjusting nut (403) is mounted in the section nut mounting portion (4), and the adjusting nut (403) is meshed with the adjusting thread (301) on the square screw rod (3).

10. The device for constructing a long segment bone defect model according to claim 9, characterized in that: The adjusting nut mounting portion is provided with an insertion groove (401) for inserting the square screw (3) on one side thereof facing the square screw (3); and the adjusting nut mounting portion (4) is vertically provided with an adjusting nut mounting groove (402), the adjusting nut mounting groove (402) being connected to the insertion groove (401) and penetrating the insertion groove (401); and an adjusting nut (403) is arranged in the adjusting nut mounting groove (402).

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