Tool structure for vertebral pedicle reset screw

Abstract

The utility model relates to a tool structure for a vertebral pedicle reset screw, and relates to the technical field of tools, the tool structure comprises a base plate, a plurality of parallel first clamping grooves are formed in the upper side edge of the base plate, and second clamping grooves corresponding to the first clamping grooves are formed in the vertical side face of the base plate; a nut part on the reset screw is divided into two parts by the U-shaped groove, one part of the nut part is inserted into the first clamping groove, and the other part of the nut part is inserted into the second clamping groove; according to the tool structure, when the tool structure is applied, tool limiting can be conducted on vertebral pedicle reset screws of the same type and any different specifications, and due to the fact that plug-pull type tool positioning is adopted, the installation stability of the vertebral pedicle reset screws in the tool process is enhanced, and the possibility of marking deviation caused by installation looseness of the vertebral pedicle reset screws is reduced; the tool structure can mark a plurality of vertebral pedicle reset screws of the same size at the same time, and the marking efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tooling, and in particular to a tooling structure for pedicle reduction screws. Background Art

[0002] Pedicle reduction screw is a passive implant device, mainly used to treat spinal degenerative diseases and spinal injuries, such as scoliosis correction, spinal fractures, vertebral tumors, tuberculosis and various degenerative diseases. Pedicle reduction screws are implanted into the pedicle bone to resist the pressure and tension of the spine, thereby stabilizing the spine and promoting bone healing. In order to improve the safety, traceability and ease of use of the product, it is usually necessary to mark the pedicle reduction screw, generally using laser marking, mechanical engraving and other marking methods.

[0003] In the related art, refer to Figure 1 and Figure 2 A tooling structure for marking pedicle reduction screws includes a tooling table 1, on which four nut placement slots 11 and corresponding screw placement slots 12 are provided. The screw body 2 includes a screw portion 21 and a nut portion 22, wherein the nut portion 22 is provided with a U-shaped slot 221. For pedicle reduction screws of the same type but different specifications, the nut portion 22 has the same structure, and only the diameter of the screw portion 21 is different. In order to enable the tooling structure to mark pedicle reduction screws of the same type but different specifications at the same time, the four screw placement slots 12 are designed to have multiple sizes, for example, the inner diameters of the four screw placement slots 12 are designed to be 4, 5, 6, and 7 mm, so that the tooling structure can simultaneously perform limit tooling on the screw portions 21 of the same type but different specifications.

[0004] Since the above-mentioned tooling structure adopts a direct placement method to limit the tooling, when the pedicle reduction screw is marked, the pedicle screw in the groove may be accidentally touched during the marking process, and the product may cause shaking in the groove, thereby causing deviations in the marking on the pedicle screw, affecting the final marking effect of the product; in addition, when marking a pedicle reduction screw of a certain size (for example, 4mm), only a single pedicle reduction screw can be marked at the same time, that is, the efficiency of single-piece marking is low, and there is room for improvement. Utility Model Content

[0005] The purpose of the present application is to provide a tooling structure for pedicle reduction screws to solve the problem in the above-mentioned related technologies that the product in the slot may shake during marking, affecting the final marking effect of the product, and the low marking efficiency of a single piece.

[0006] The present application provides a tooling structure for pedicle reduction screws using the following technical solution:

[0007] A tooling structure for a pedicle reduction screw comprises a base plate, wherein a plurality of first slots arranged in parallel are provided on the upper edge of the base plate, and a second slot corresponding to the first slot is provided on the vertical side surface of the base plate; a nut portion on the reduction screw is divided into two parts by a U-shaped groove, a part of the nut portion is inserted into the first slot, and the other part of the nut portion is inserted into the second slot.

[0008] By adopting the above-mentioned technical scheme, due to the matching arrangement of the first slot and the second slot on the substrate, when the tooling structure is used, a plug-in tooling positioning is adopted, and one part of the nut part on the pedicle reduction screw is inserted into the first slot, and the other part is inserted into the second slot, so that it can perform tooling limiting on the same type (same nut part size) of pedicle reduction screws of any different specifications, thereby expanding the application scope of the tooling structure, and due to the use of plug-in tooling positioning, the installation stability of the pedicle reduction screw during tooling is enhanced, the possibility of marking deviation caused by loose installation of the pedicle reduction screw is reduced, and the use performance of the tooling structure is improved; the tooling structure can also simultaneously mark multiple pedicle reduction screws of the same size, thereby improving the marking efficiency.

[0009] Optionally, the substrate is provided with an escape groove at an inner vertical corner of the first slot.

[0010] By adopting the above technical solution, when the pedicle reduction screw is installed on the base plate, the design of the air avoidance groove can provide a certain space, making assembly easier, reducing friction and resistance during assembly, and improving the performance of the tooling structure.

[0011] Optionally, the inner side wall of the air-avoiding groove is a curved surface.

[0012] By adopting the above technical solution, since the inner side surface of the air avoidance groove is a curved surface, the curved air avoidance groove can effectively disperse stress and reduce stress concentration, thereby preventing the substrate from cracking or breaking at the corners, thereby increasing the service life of the substrate.

[0013] Optionally, the cross-sectional shape of the air avoidance groove is three-quarters of a circle.

[0014] By adopting the above technical solution, the three-quarter circle cross-sectional shape provides a larger arc area at the corner, thereby dispersing stress more effectively; and the three-quarter circle cross-sectional shape can provide a larger assembly space to accommodate assembly parts of different shapes and sizes; this helps to simplify the assembly process, reduce friction and resistance during assembly, and improve assembly efficiency. These benefits can further improve the performance and service life of the substrate.

[0015] Optionally, the number of the first card slots is not less than 10.

[0016] By adopting the above technical solution, since the number of the first slots on the substrate is not less than 10, more than ten pedicle reduction screws can be marked at the same time, thereby increasing the number of pedicle reduction screws marked in the same batch, thereby improving the marking efficiency of the pedicle reduction screws.

[0017] Optionally, the substrate is made of POM material.

[0018] By adopting the above technical solution, POM is obtained by polymerization with formaldehyde and other raw materials, and is a high-density, high-crystallinity thermoplastic engineering plastic. Therefore, the substrate has high strength, wear resistance and corrosion resistance, reducing the possibility of deformation or wear of the substrate during use, thereby improving the performance and service life of the substrate.

[0019] Optionally, the total volume occupied by the second card slot and the plurality of first card slots does not exceed one fifth of the volume of the substrate.

[0020] By adopting the above technical solution, the structural strength of the substrate is guaranteed, the possibility of deformation of the substrate after being used for a period of time is reduced, and the performance and service life of the substrate are extended.

[0021] Optionally, the second card slot is a straight through slot, and the length direction of the second card slot is parallel to the length direction of the substrate.

[0022] By adopting the above technical solution, since the second card slot is a straight through slot, it is convenient to mill the second card slot on the substrate when processing the second card slot, thereby improving the efficiency of the tooling structure during processing and manufacturing and reducing production costs.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Due to the matching arrangement of the first slot and the second slot on the base plate, when the tooling structure is used, a part of the nut portion on the pedicle reduction screw is inserted into the first slot, and the other part is inserted into the second slot, so that the tooling limit can be performed on the pedicle reduction screws of the same model and any different specifications, thereby expanding the scope of application of the tooling structure, and due to the use of plug-in tooling positioning, the installation stability of the pedicle reduction screw during tooling is enhanced, the possibility of marking deviation caused by loose installation of the pedicle reduction screw is reduced, and the use performance of the tooling structure is improved;

[0025] 2. Due to the setting of the air-avoiding groove, when the pedicle reduction screw is installed on the base plate, the design of the air-avoiding groove can provide a certain space, making assembly easier, reducing friction and resistance during assembly, and improving the performance of the tooling structure.

[0026] 3. Compared with the background technology that can only mark a single piece, this tooling structure can mark multiple pedicle reduction screws of the same size at the same time, thereby improving the marking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure embodying the background technology;

[0029] Figure 2 is a schematic diagram of an exploded structure embodying background technology;

[0030] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 4 It is a schematic diagram of the explosion structure of an embodiment of the present application;

[0032] Figure 5 It is a partial structural diagram of the distribution of the air avoidance grooves in an embodiment of the present application.

[0033] In the figure, 1, workbench; 11, nut placement groove; 12, screw placement groove; 2, screw body; 21, screw part; 22, nut part; 221, U-shaped groove; 3, base plate; 31, first slot; 311, air avoidance slot; 32, second slot. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0035] Example:

[0036] Reference Figure 3 and Figure 4 A tooling structure for pedicle reduction screws, comprising a plurality of first slots 31 arranged in parallel on the upper edge of a base plate 3, and a second slot 32 corresponding to the first slot 31 is opened on the vertical side of the base plate 3;

[0037] When the tooling structure is used, since the nut portion 22 on the screw body 2 is divided into two parts by the U-shaped groove 221, one part of the nut portion 22 is inserted into the first slot 31, and the other part is inserted into the second slot 32. This arrangement enables it to perform tooling limit on pedicle reduction screws of the same type but different specifications, thereby improving its performance.

[0038] Reference Figure 5 The substrate 3 has two symmetrically disposed escape grooves 311 at the inner vertical corners of the first slot 31, wherein the inner sidewalls of the escape grooves 311 are arc-shaped, and the cross-sectional shape of the escape grooves 311 is three-quarters of a circle. The three-quarters of a circle cross-sectional shape provides a larger arc-shaped area at the corners, thereby more effectively dispersing stress;

[0039] This design can better resist external shocks and vibrations, and reduce the risk of cracking or breakage of the substrate 3 at the corners; and the three-quarter circular cross-sectional shape can provide a larger assembly space to accommodate assembly components of different shapes and sizes. This helps to simplify the assembly process, reduce friction and resistance during assembly, and improve assembly efficiency. These benefits can further improve the performance and service life of the substrate 3.

[0040] Reference Figure 3 and Figure 4 The substrate 3 is made of POM material. POM material, namely polyoxymethylene, is a thermoplastic crystalline polymer. POM is obtained by polymerization of formaldehyde and other raw materials. It is a high-density, high-crystallinity thermoplastic engineering plastic. Therefore, the substrate 3 has high strength, wear resistance and corrosion resistance.

[0041] Reference Figure 4 The number of the first card slots 31 is not less than 10, thereby increasing the number of pedicle reduction screws marked in the same batch, thereby improving the marking efficiency of the pedicle reduction screws. In the embodiment of the present application, the number of the first card slots 31 is ten. The total volume occupied by the second card slots 32 and the ten first card slots 31 does not exceed one-fifth of the volume of the substrate 3, thereby ensuring the structural strength of the substrate 3, reducing the possibility of deformation of the substrate 3 after a period of use, and extending the performance and service life of the substrate 3.

[0042] Reference Figure 4 The second slot 32 is a through slot arranged in a straight line, and the length direction of the second slot 32 is parallel to the length direction of the substrate 3. With this arrangement, the milling process of the second slot 32 is facilitated, thereby improving the efficiency of the tooling structure during processing and manufacturing, and reducing the production cost.

[0043] The implementation principle of the embodiment of the present application is:

[0044] When the tooling structure is used, a part of the nut portion 22 is inserted into the first slot 31 and the other part is inserted into the second slot 32, so that it can perform tooling limit on pedicle reduction screws of the same type but different specifications, thereby improving its performance.

[0045] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tooling structure for a pedicle reduction screw, comprising a base plate (3), characterized in that: A plurality of first card slots (31) arranged in parallel are provided on the upper edge of the base plate (3), and second card slots (32) corresponding to the first card slots (31) are provided on the vertical side surface of the base plate (3); The nut portion (22) on the reset screw is divided into two parts by a U-shaped groove (221), one part of the nut portion (22) is inserted into the first clamping groove (31), and the other part of the nut portion (22) is inserted into the second clamping groove (32).

2. A tooling structure for pedicle reduction screws according to claim 1, characterized in that: The base plate (3) is provided with a clearance groove (311) at the inner vertical corner of the first clamping groove (31).

3. A tooling structure for pedicle reduction screws according to claim 2, characterized in that: The inner side wall of the air avoidance groove (311) is a curved surface.

4. A tooling structure for pedicle reduction screws according to claim 3, characterized in that: The cross-sectional shape of the air avoidance groove (311) is three-quarters of a circle.

5. The tooling structure for pedicle reduction screw according to claim 1, characterized in that: The number of the first card slots (31) is no less than 10.

6. A tooling structure for pedicle reduction screws according to claim 1, characterized in that: The substrate (3) is made of POM material.

7. A tooling structure for pedicle reduction screws according to claim 1, characterized in that: The total volume occupied by the second card slot (32) and the plurality of first card slots (31) does not exceed one fifth of the volume of the substrate (3).

8. The tooling structure for pedicle reduction screw according to claim 1, characterized in that: The second card slot (32) is a through slot arranged in a straight line, and the length direction of the second card slot (32) is parallel to the length direction of the base plate (3).

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