Irregular bone block clamping device

Abstract

The utility model relates to bone block clamping technical field, and disclose an irregular bone block clamping device, including adjusting assembly, the orientation of clamping direction is oriented guide component, the fixed fixing component after coarse adjustment, adjusting assembly includes: base plate, sets up the clamping block of base plate upper end and sets up the connecting ball head in clamping block inside, guide component includes: the sliding slot of opening in base plate inside, fixing component includes: the limiting slot of opening in the sliding slot inside and the limiting block of engaging in the limiting slot inside, the utility model discloses through adjusting assembly realizes the accurate adaptation and protection of irregular bone block, wherein the connecting ball head can drive the limited rotation of clamping block, makes clamping block arc end face to be able to adhere to the irregular curved surface of bone block, and the gasket of medical grade silica gel material can be detachably installed in clamping block front end, can increase the friction force with bone block and prevent displacement, can also disperse the clamping stress, avoids the damage of thin fragile bone block.

Description

Technical Field

[0001] This utility model relates to the field of bone block clamping technology, specifically an irregular bone block clamping device. Background Technology

[0002] In clinical treatment and biomedical research, it is often necessary to perform precise in vitro processing on bone tissue samples, such as drilling, fenestration, and dimensional trimming of bone blocks before bone grafting surgery, or structural processing of bone tissue samples in scientific research experiments. Existing methods for fixing bone blocks mainly fall into three categories: First, general-purpose vises, bench vises, and other industrial clamps. While these devices can stably fix regular workpieces, bone blocks are often irregular in shape and thin and brittle, making them prone to fractures and edge chipping due to concentrated clamping force, and precise positioning is difficult to achieve. Second, customized molds or trays, while adaptable to single samples, require individual design and fabrication for each bone block, resulting in high costs and long production cycles, failing to meet the needs of rapid clinical pretreatment or batch processing of research samples. Third, simple clamping washers, double-sided tape, or adsorption devices. These methods are simple in structure but have extremely poor fixation stability, especially when processing inclined surfaces or edges of bone blocks, easily leading to bone block displacement, severely affecting processing accuracy. Furthermore, they have poor compatibility with drilling and cutting tools, making centering and angle control difficult. None of the aforementioned existing technologies can simultaneously achieve "adaptability, protection, precision, efficiency, and economy," making it difficult to meet the actual needs of in vitro processing of irregular bone blocks.

[0003] Existing publicly available technical solution CN220637839U discloses a clamping device for bone processing in the field of orthopedic medical technology. The device includes a main frame and a first threaded rod. The first threaded rod is rotatably connected to the rear side of the inner wall of the main frame. Both ends of the first threaded rod penetrate the main frame and extend to the left and right side walls of the main frame. Support rods are fixedly connected to the four bottom corners of the main frame. A fixing rod is fixedly connected between the upper sides of the left and right side walls of the support rod. A rotating rod is rotatably connected to the middle of the rear side wall of the fixing rod. A first adjusting knob is fixedly connected to the end of the rotating rod. This clamping device for bone processing has a reasonable structural design, allowing for flexible adjustment of the distance and angle required by the user, greatly saving time. It also supports the bottom of the clamped bone block to prevent uneven force from causing cracks, improving the quality of the bone block and reducing material costs.

[0004] However, the existing technical solution still has some shortcomings in actual implementation. The left and right clamping plates of the device used to hold the bone block adopt a rigid planar end face design, and the distance between the two clamping plates can only be adjusted by the third threaded rod. There is no structural design to adapt to irregular curved surfaces. When there are protrusions on the surface of the bone block, the rigid planar clamping plates can only form local contact with the protrusions, resulting in the clamping force being concentrated at a single point. When there are depressions or inclined surfaces on the surface of the bone block, the clamping plates cannot fit the depression areas, which can easily cause the bone block to be partially suspended. Whether it is single-point force or local suspension, it will destroy the clamping stability. During processing, the bone block is prone to displacement due to uneven force, which not only affects the processing accuracy, but may also cause the thin and brittle bone block to chip, crack, or even fracture due to excessive force at a single point. It cannot meet the core requirement of stable clamping of irregular bone blocks in clinical or scientific research. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given the problems existing in the prior art: the left and right clamping plates of the device used to hold bone blocks adopt a rigid planar end face design, and the distance between the two clamping plates can only be adjusted by the third threaded rod. There is no structural design to adapt to irregular curved surfaces. When there are protrusions on the surface of the bone block, the rigid planar clamping plates can only form local contact with the protrusions, resulting in the clamping force being concentrated at a single point. When there are depressions or inclined surfaces on the surface of the bone block, the clamping plates cannot fit the depression areas, which can easily cause the bone block to be partially suspended. Whether it is single-point force or local suspension, it will destroy the clamping stability. During the processing, the bone block is prone to displacement due to uneven force, which not only affects the processing accuracy, but may also cause the thin and brittle bone block to chip, crack, or even fracture due to excessive force at a single point. It cannot meet the core requirement of stable clamping of irregular bone blocks in clinical or scientific research.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An irregular bone fragment clamping device includes an adjustment component; a guide component for guiding the clamping direction; and a fixing component for fixing after coarse adjustment.

[0009] The adjustment assembly includes: a base plate; a clamping block disposed on the upper end of the base plate; and a connecting ball head disposed inside the clamping block;

[0010] The guide assembly includes: a fixing plate welded to the lower end of the substrate; and a sliding groove formed inside the substrate;

[0011] The fixing component includes: a limiting groove formed inside the slide; and a limiting block engaged inside the limiting groove.

[0012] As a further embodiment of this utility model: the adjustment assembly further includes: a lead screw pusher, an adjusting lead screw, and a handle; the lead screw pusher is welded to the rear end of the connecting ball head; the adjusting lead screw is connected to the rear end of the lead screw pusher via a bearing; and the handle is installed at the rear end of the adjusting lead screw.

[0013] As a further embodiment of this utility model: the adjusting component further includes: a nut block and a fixing block; the nut block is threadedly connected to the surface of the adjusting screw; the fixing block is welded to the rear end of the nut block.

[0014] As a further improvement of this utility model, the adjustment component further includes a pad; the pad is detachably installed at the front end of the clamping block, and the pad material is medical-grade silicone.

[0015] As a further improvement of this utility model: the clamping block is a solid block with a groove structure, and the end face of its gripper is an arc shape that contacts the bone block.

[0016] As a further embodiment of this utility model: the guiding assembly further includes: a guide post and a guide block; the guide post is fixed to one side of the fixing plate; the guide block is slidably connected to the surface of the guide post.

[0017] As a further embodiment of this utility model: the fixing component further includes: a connecting plate and a button; the connecting plate is slidably connected to the inside of the fixing block; the button is welded to the upper left side of the connecting plate.

[0018] As a further improvement of this utility model, the fixing component further includes a return spring; the return spring is disposed on the right side of the connecting plate, and several sets of return springs are evenly arranged.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model achieves precise fitting and protection of irregular bone blocks through an adjustable component. The connecting ball head can drive the clamping block to rotate within a limited range, so that the arc-shaped end face of the clamping block can fit the irregular curved surface of the bone block. The medical-grade silicone pad can be detachably installed at the front end of the clamping block, which can increase the friction with the bone block to prevent displacement and disperse the clamping stress to avoid damage to thin and brittle bone blocks. At the same time, the adjusting screw and handle can cooperate to achieve micro-advancement of the clamping block to ensure clamping accuracy and meet the needs of in vitro precision processing.

[0021] 2. This utility model ensures the stability and directionality of clamping adjustment through the guide component. The guide post is fixed to one side of the fixed plate, and the guide block slides along the surface of the guide post. This can constrain the entire adjustment component to move radially only along the sliding groove inside the base plate, avoiding deviation during the adjustment process, providing stable guidance for coarse adjustment positioning, and further ensuring the accuracy of subsequent processing.

[0022] 3. This utility model achieves quick locking and unlocking after coarse adjustment through a fixing component. Pressing the button can drive the connecting plate to slide in the fixing block, so that the limiting block is disengaged from the limiting groove, which facilitates quick adjustment of the clamping block position. After releasing the button, the reset spring resets and pushes the connecting plate, so that the limiting block is re-engaged in the limiting groove, achieving stable fixation of the coarse adjustment position, simplifying the operation steps and improving the adjustment efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an irregular bone block clamping device according to the present invention;

[0024] Figure 2 This is a bottom view of an irregular bone block clamping device according to the present invention;

[0025] Figure 3 This is a cross-sectional schematic diagram of the fixing component of this utility model;

[0026] Figure 4 This is a partial cross-sectional view of the adjustment component of this utility model;

[0027] Figure 5 This is a side cross-sectional view of an irregular bone block clamping device according to the present invention.

[0028] In the diagram: 1. Adjustment assembly; 101. Base plate; 102. Clamping block; 103. Connecting ball head; 104. Lead screw push seat; 105. Nut block; 106. Fixing block; 107. Adjusting lead screw; 108. Pad; 109. Handle; 2. Guide assembly; 201. Guide block; 202. Guide column; 203. Fixing plate; 204. Slide groove; 3. Fixing assembly; 301. Button; 302. Connecting plate; 303. Return spring; 304. Limiting block; 305. Limiting groove. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0032] Example 1:

[0033] Please see Figures 1-5 This is the first embodiment of the present utility model.

[0034] This embodiment provides an irregular bone block clamping device, including an adjustment component 1; a guide component 2 for guiding the clamping direction; and a fixing component 3 for fixing after coarse adjustment;

[0035] Adjustment component 1 includes: a base plate 101; a clamping block 102 disposed on the upper end of the base plate 101; and a connecting ball head 103 disposed inside the clamping block 102;

[0036] The guide assembly 2 includes: a fixing plate 203 welded to the lower end of the substrate 101; and a groove 204 formed inside the substrate 101.

[0037] The fixing component 3 includes: a limiting groove 305 formed inside the slide 204; and a limiting block 304 engaged inside the limiting groove 305.

[0038] Specifically, the adjustment assembly 1 also includes: a lead screw pusher 104, an adjusting lead screw 107, and a handle 109; the lead screw pusher 104 is welded to the rear end of the connecting ball head 103; the adjusting lead screw 107 is connected to the rear end of the lead screw pusher 104 via a bearing; and the handle 109 is installed at the rear end of the adjusting lead screw 107.

[0039] Furthermore, by rotating the handle 109, the handle 109 drives the adjusting screw 107 to rotate synchronously. The rotational motion of the adjusting screw 107 is converted into linear motion along the axial direction, which in turn pushes the screw pusher 104 to move.

[0040] Specifically, the adjusting assembly 1 also includes: a nut block 105 and a fixing block 106; the nut block 105 is threadedly connected to the surface of the adjusting screw 107; the fixing block 106 is welded to the rear end of the nut block 105.

[0041] Furthermore, the adjusting screw 107 passes through the nut block 105 and the fixing block 106.

[0042] Specifically, the adjustment component 1 also includes: a pad 108; the pad 108 is detachably installed at the front end of the clamp 102, and the material of the pad 108 is medical-grade silicone.

[0043] Furthermore, the pad 108 can increase friction, disperse stress, and provide cushioning protection for the surface of the brittle bone block.

[0044] In use, after coarse adjustment of the adjustment component 1, fine adjustment and clamping are then performed. Rotating the handle 109 of the adjustment component 1 causes the adjustment screw 107 to rotate synchronously. Since one end of the adjustment screw 107 is connected to the rear end of the screw push seat 104 through a bearing, and the other end is connected to the internal thread of the nut block 105, the position of the nut block 105 is fixed with the fixing block 106. The rotational motion of the adjustment screw 107 can be converted into linear motion along the axial direction, thereby pushing the screw push seat 104 to move, which in turn drives the connecting ball head 103 and the clamping block 102 set at its front end to move towards the center of the base plate 101. The clamping block 102 is a solid block with a grooved structure, the end face is arc-shaped, and a medical-grade silicone pad 108 can be detachably installed at the front end. Combined with the rotatable characteristics of the connecting ball head 103, the pad 108 can adaptively conform to the surface of the irregular bone block, which not only avoids bone block damage but also achieves stable clamping. After the bone block is processed, turn the handle 109 in the opposite direction and adjust the lead screw 107 to drive the lead screw pusher 104 and the clamping block 102 to move backward away from the center of the base plate 101, thereby releasing the clamping of the bone block and allowing the processed bone block to be removed smoothly.

[0045] In summary, this utility model achieves precise fitting and protection of irregular bone blocks through the adjustment component 1. The connecting ball head 103 can drive the clamping block 102 to rotate within a limited range, so that the arc-shaped end face of the clamping block 102 can fit the irregular curved surface of the bone block. The medical-grade silicone pad 108 can be detachably installed at the front end of the clamping block 102, which can increase the friction with the bone block to prevent displacement and disperse the clamping stress to avoid damage to thin and brittle bone blocks. At the same time, the adjusting screw 107 cooperates with the handle 109 to realize the micro-advancement of the clamping block 102, ensuring clamping accuracy and meeting the needs of in vitro precision processing.

[0046] Example 2:

[0047] Please see Figures 1-5 This is the second embodiment of the present utility model.

[0048] Specifically, the clamping block 102 is a solid block with a grooved structure, and the end face of its gripper is an arc shape that contacts the bone block.

[0049] Furthermore, the rotatable nature of the clamping block 102 in conjunction with the connecting ball head 103 allows the pad 108 to adaptively conform to the surface of the irregular bone block.

[0050] Specifically, the guide assembly 2 also includes: a guide post 202 and a guide block 201; the guide post 202 is fixed to one side of the fixing plate 203; the guide block 201 is slidably connected to the surface of the guide post 202.

[0051] Furthermore, the guide block 201 can slide along the surface of the guide post 202 and constrain the entire adjustment assembly 1 to move along the groove 204 inside the substrate 101.

[0052] Specifically, the fixing component 3 also includes: a connecting plate 302 and a button 301; the connecting plate 302 is slidably connected to the inside of the fixing block 106; the button 301 is welded to the upper left side of the connecting plate 302.

[0053] Furthermore, pressing the button 301 of the fixing component 3 causes the connecting plate 302 to slide inside the fixing block 106.

[0054] Specifically, the fixing component 3 also includes: a reset spring 303; the reset spring 303 is disposed on the right side of the connecting plate 302, and several sets of reset springs 303 are evenly arranged.

[0055] Furthermore, when button 301 is released, the compressed reset spring 303 recovers its deformation and pushes the connecting plate 302 to slide in the opposite direction, so that the limit block 304 re-engages in the limit groove 305 at the corresponding position.

[0056] In use, a rough adjustment is first performed by pressing the button 301 of the fixing component 3. The button 301 causes the connecting plate 302 to slide inside the fixing block 106. At this time, the return spring 303 on the right side of the connecting plate 302 is compressed, which in turn causes the limiting block 304 welded to the lower left side of the connecting plate 302 to disengage from the limiting groove 305 inside the slide groove 204, thus releasing the position restriction on the adjusting component 1. At this time, the guide block 201 of the guide component 2 can slide along the surface of the guide post 202 and constrain the entire adjusting component 1 to move along the slide groove 204 inside the base plate 101, thereby adjusting the clamping block 102 in the adjusting component 1 to a position that is approximately suitable for the size of the bone block to be processed. After the rough adjustment is completed, the button 301 is released, the compressed return spring 303 recovers its deformation and pushes the connecting plate 302 to slide in the opposite direction, so that the limiting block 304 is re-engaged in the limiting groove 305 at the corresponding position.

[0057] In summary, this invention ensures the stability and directionality of clamping adjustment through the guide component 2. The guide post 202 is fixed to one side of the fixing plate 203, and the guide block 201 slides along the surface of the guide post 202. This constrains the entire adjustment component 1 to move radially only along the sliding groove 204 inside the base plate 101, preventing offset during adjustment and providing stable guidance for coarse adjustment positioning, further ensuring the accuracy of subsequent processing. This invention achieves quick locking and unlocking after coarse adjustment through the fixing component 3. Pressing the button 301 causes the connecting plate 302 to slide within the fixing block 106, disengaging the limiting block 304 from the limiting groove 305, facilitating quick adjustment of the clamping block 102 position. After releasing the button 301, the reset spring 303 resets and pushes the connecting plate 302, causing the limiting block 304 to re-engage in the limiting groove 305, achieving stable fixation of the coarse adjustment position, simplifying operation steps, and improving adjustment efficiency.

[0058] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0059] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0060] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An irregular bone block clamping device, characterized in that: include: Adjustment component (1); A guide assembly (2) that guides the clamping direction; The fixing component (3) is fixed after rough adjustment; The adjustment assembly (1) includes: a base plate (101); a clamping block (102) disposed on the upper end of the base plate (101); and a connecting ball head (103) disposed inside the clamping block (102); The guide assembly (2) includes: a fixing plate (203) welded to the lower end of the substrate (101); and a groove (204) formed inside the substrate (101); The fixing component (3) includes: a limiting groove (305) formed inside the slide (204); and a limiting block (304) engaged inside the limiting groove (305).

2. The irregular bone block clamping device according to claim 1, characterized in that: The adjustment assembly (1) further includes: a lead screw pusher (104), an adjusting lead screw (107), and a handle (109); the lead screw pusher (104) is welded to the rear end of the connecting ball head (103); the adjusting lead screw (107) is connected to the rear end of the lead screw pusher (104) via a bearing; and the handle (109) is installed at the rear end of the adjusting lead screw (107).

3. The irregular bone block clamping device according to claim 2, characterized in that: The adjustment assembly (1) further includes: a nut block (105) and a fixing block (106); the nut block (105) is threaded to the surface of the adjustment screw (107); the fixing block (106) is welded to the rear end of the nut block (105).

4. The irregular bone block clamping device according to claim 1, characterized in that: The adjustment component (1) further includes a pad (108); the pad (108) is detachably installed on the front end of the clamp (102), and the material of the pad (108) is medical-grade silicone.

5. An irregular bone block clamping device according to claim 4, characterized in that: The clamping block (102) is a solid block with a grooved structure, and the end face of its gripper is an arc shape that contacts the bone block.

6. The irregular bone block clamping device according to claim 1, characterized in that: The guide assembly (2) further includes: a guide post (202) and a guide block (201); the guide post (202) is fixed to one side of the fixing plate (203); the guide block (201) is slidably connected to the surface of the guide post (202).

7. An irregular bone block clamping device according to claim 3, characterized in that: The fixing component (3) further includes: a connecting plate (302) and a button (301); the connecting plate (302) is slidably connected to the inside of the fixing block (106); the button (301) is welded to the upper left side of the connecting plate (302).

8. An irregular bone block clamping device according to claim 7, characterized in that: The fixing component (3) further includes a reset spring (303); the reset spring (303) is disposed on the right side of the connecting plate (302), and several sets of the reset spring (303) are evenly arranged.

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