Quick mounting structure for vertebral plate screw

Abstract

The utility model discloses a quick-assembly structure for a vertebral plate screw, which realizes accurate butt joint of a tool and a screw head through the staggered design of a cross recess A and a cross recess B, and meanwhile, enables a user to easily complete the disassembly and assembly operation of the screw without an additional tool by utilizing the arrangement of a ring body and a hand screwing sheet. And through cooperation of the arc-shaped groove and the arc-shaped block and dynamic extrusion force provided by the spring, the stability in the operation process is effectively improved, and it is ensured that the screws can be rapidly aligned and firmly fixed in the assembling process. The overall structure not only improves the operation efficiency and flexibility, but also can provide a stable installation effect in a narrow or complex environment, and greatly improves the use experience of a traditional screw structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lamina screw field, specifically, relate to a lamina screw quick -mounting structure. BACKGROUND

[0002] In the process of orthopedic surgery or equipment assembly, the fixation and disassembly of screws are the key links to ensure the stability of the overall structure and the normal function. However, the traditional screw design often has many limitations, especially when relying on tool operation, a series of problems are exposed. First of all, these screws usually need to be installed and disassembled by multiple special tools, resulting in complex operation process and long time consumption. This not only reduces the work efficiency, but also increases the risk of patients and equipment in the process of surgery or assembly.

[0003] Secondly, the traditional screw is easy to deviate in position when operating due to tool slipping or failure to accurately align the screw head. This situation is particularly prone to occur in narrow, vibrating or slippery environments, making it difficult to ensure the locking effect of the screw. In addition, due to the lack of precise control and stability guarantee of the contact position between the screw and the tool, in the installation scene with multiple angles or high precision requirements (such as spinal surgery or high-precision equipment assembly), the screw may be loose, not installed in place or even completely failed.

[0004] These defects not only affect the use effect of the screw, but also increase the burden of the operator. In the medical scene, this may prolong the operation time and increase the risk of patients; while in industrial assembly, it may cause equipment operation failure or increase maintenance cost.

[0005] Therefore, the utility model is provided. CONTENT OF THE UTILITY MODEL

[0006] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a lamina screw quick-mounting structure to solve the problems raised in the background.

[0007] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0008] A lamina screw quick-mounting structure, comprising: a screw head, an extrusion disc, a cross slot A is formed in the upper part of the screw head, a cross slot B is formed between the upper and lower parts of the extrusion disc, and the positions of the cross slot A and the cross slot B are staggered with each other;

[0009] The upper part of the screw head is fixedly connected with a ring body which is attached to the lower part of the extrusion disc, and the ring body forms a space between the extrusion plate and the top of the screw head, and the lateral side of the ring body is rotatably connected with a hand twisting piece;

[0010] The arc-shaped groove is arranged above the screw head close to the outer periphery, the arc-shaped block is fixedly connected below the extrusion disc and located in the arc-shaped groove, and the spring is fixedly connected between the arc-shaped block and the arc-shaped groove.

[0011] Optionally, the inner wall of the cross groove B is fixedly connected with a rubber plate.

[0012] Optionally, the inner side of the hand twisting piece is fixedly connected with a positioning rod penetrating through the ring body, the lower side of the extrusion disc is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with an arc-shaped rod, and an arc-shaped hole matched with the arc-shaped rod is arranged through the circumferential side of the positioning rod.

[0013] Optionally, the arc of the arc-shaped rod corresponds to the arc of the arc-shaped groove, and the arc of the arc-shaped groove is 90°.

[0014] Optionally, the lower side of the screw head is fixedly connected with a threaded rod, and the lower end of the threaded rod is in a pointed end structure.

[0015] Optionally, the circumferential side of the outer wall of the hand twisting piece is provided with a friction protrusion.

[0016] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0017] Through the staggered design of the cross groove A and the cross groove B, the precise butt joint of the tool and the screw head is realized, and meanwhile, the ring body and the hand twisting piece are arranged, so that the user can easily complete the disassembly and assembly operation of the screw without additional tools. The cooperation of the arc-shaped groove and the arc-shaped block and the dynamic extrusion force provided by the spring effectively improve the stability in the operation process, and ensure that the screw can be quickly aligned and firmly fixed during the assembly process. The overall structure not only improves the operation efficiency and flexibility, but also provides stable installation effect in narrow or complex environment, greatly improving the use experience of the traditional screw structure.

[0018] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings,

[0020] In the drawings:

[0021] Figure 1 is a schematic view of the overall three-dimensional structure of the screw;

[0022] Figure 2 is a schematic view of the overall three-dimensional structure of the screw;

[0023] Figure 3 is a schematic view of the structure above the screw head from the side;

[0024] Figure 4 is a schematic view of the structure below the extrusion plate from the side.

[0025] 1, screw head; 2, cross slot A; 3, extrusion plate; 4, cross slot B; 5, ring body; 6, hand twist piece; 7, arc-shaped slot; 8, arc-shaped block; 9, positioning rod; 10, arc-shaped rod; 11, arc-shaped hole.

[0026] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] The utility model will be further described in detail in combination with the drawings.

[0028] Please refer to Figures 1-4 shown, in this embodiment, a kind of fast installation structure for laminectomy screw is provided, including screw head 1, extrusion plate 3, cross slot A 2 is set in the top of screw head 1, cross slot B 4 is set in the top and bottom of extrusion plate 3, and the position of cross slot A 2 and cross slot B 4 is staggered with each other;

[0029] The top of screw head 1 is fixedly connected with the ring body 5 attached below extrusion plate 3, and the ring body 5 forms a space between extrusion plate and the top of screw head 1, and the circumferential side of ring body 5 is rotatably connected with hand twist piece 6;The setting of hand twist piece 6 enables users to easily complete the disassembly and assembly operation of screw head 1 without the aid of any additional tools.This design is particularly suitable for use in emergency situations or when tools are missing, and provides sufficient manual torque directly through hand twist piece 6, so that users can rotate and lock the screw by relying only on hand power.

[0030] Arc-shaped slot 7 is set in the top close to the periphery of screw head 1, arc-shaped block 8 located in arc-shaped slot 7 is fixedly connected below extrusion plate 3, and spring is fixedly connected between arc-shaped block 8 and arc-shaped slot 7.Through arc-shaped slot 7 on screw head 1, arc-shaped block 8 below extrusion plate 3 and spring therebetween, dynamic extrusion function is realized.When screwdriver is inserted into cross slot B 4, rotating extrusion plate 3 can align cross slot A 2 and cross slot B 4, and spring generates extrusion force immediately, so that the end of screwdriver is always tightly attached to screw head 1.This design ensures the stable contact between tool and screw head 1, improves the stability and accuracy of operation, and at the same time, after operation stops, the rebound force of spring can make arc-shaped block 8 automatically reset, ready for next use, thereby improving installation efficiency and optimizing user experience.

[0031] The inner wall of the cross slot B4 is fixedly connected with a rubber plate. Through the design of the rubber plate, after the end of the screwdriver enters the cross slot B4, the contact stability between the tool and the screw head 1 can be significantly improved. The rubber plate is installed on the inner wall of the cross slot B4, which provides high friction and effectively prevents the screwdriver from loosening or falling out due to sliding or vibration during use.

[0032] In this embodiment, the inner side of the hand twisting piece 6 is fixedly connected with a positioning rod 9 penetrating through the ring body 5, and the lower side of the pressing disc 3 is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with an arc-shaped rod 10, and the circumferential side of the positioning rod 9 is provided with an arc-shaped hole 11 matched with the arc-shaped rod 10. The arc-shaped rod 10 is arranged to cooperate with the arc-shaped hole 11 of the positioning rod 9, effectively fixing the position of the hand twisting piece 6 in a specific state, preventing it from loosening or rotating randomly in a non-operating state. This design ensures that the hand twisting piece 6 always remains stable when not in use, avoiding displacement caused by vibration or accidental contact, thereby improving the stability and reliability of the overall structure.

[0033] When the hand twisting piece 6 needs to be used, the user only needs to rotate the pressing disc 3 to make the arc-shaped rod 10 slide out of the arc-shaped hole 11 of the positioning rod 9, at which time the hand twisting piece 6 can be freely rotated to realize the adjustment or disassembly operation of the screw head 1. Through this process, the hand twisting piece 6 not only provides accurate operation torque when in use, but also effectively prevents accidental rotation when idle, further ensuring the operation safety and convenience of the system.

[0034] In addition, this fixed and unlocked mechanism simplifies the management process of the hand twisting piece 6, and the user can quickly switch the use state of the hand twisting piece 6.

[0035] In this embodiment, the curvature of the arc-shaped rod 10 corresponds to the curvature of the arc-shaped groove 7, the curvature of the arc-shaped groove 7 is 90°, and the included angle between the cross slot A2 and the cross slot B4 is 45°. When the included angle between the cross slot A2 and the cross slot B4 is 45°, the angle of the arc-shaped rod 10 located in the arc-shaped hole 11 is 50°.

[0036] In this embodiment, the lower side of the screw head 1 is fixedly connected with a threaded rod, and the lower end of the threaded rod is a pointed structure. The pointed structure helps the screw to quickly penetrate the target material, reduces the resistance during initial installation, and reduces the effort required for operation.

[0037] In this embodiment, the circumferential side of the outer wall of the hand twisting piece 6 is provided with a friction protrusion. The friction protrusion increases the friction of the outer surface of the hand twisting piece 6, so that the user can firmly hold the hand twisting piece 6 even when the hands are wet or gloves are worn, avoiding operation errors caused by slipping.

[0038] The utility model is not limited to the above-mentioned embodiment, any person should know the structure change made under the inspiration of the utility model, any technical scheme with the same or similar to the utility model falls into the protection scope of the utility model. The utility model is not described in detail the technology, shape, structure part is the known technology.

Claims

1. A quick-release structure for lamina screws, characterized in that, include: Screw head (1), extrusion plate (3), a cross groove A (2) is provided above the screw head (1), and a cross groove B (4) is provided between the top and bottom of the extrusion plate (3), with the positions of the cross groove A (2) and the cross groove B (4) intersecting each other; A ring (5) is fixedly connected above the screw head (1) and fits below the extrusion plate (3). The ring (5) creates a space between the extrusion plate and the top of the screw head (1). A hand-tightening plate (6) is rotatably connected to the circumference of the ring (5). An arc-shaped groove (7) is provided above the screw head (1) near the outer periphery. An arc-shaped block (8) located in the arc-shaped groove (7) is fixedly connected below the extrusion plate (3). A spring is fixedly connected between the arc-shaped block (8) and the arc-shaped groove (7).

2. The quick-release structure for lamina screws according to claim 1, characterized in that, A rubber plate is fixedly connected to the inner wall of the cross groove B(4).

3. The quick-release structure for lamina screws according to claim 1, characterized in that, A positioning rod (9) that passes through the ring (5) is fixedly connected to the inner side of the hand-tightening plate (6). A connecting rod is fixedly connected to the bottom of the extrusion plate (3). An arc-shaped rod (10) is fixedly connected to one end of the connecting rod. An arc-shaped hole (11) that matches the arc-shaped rod (10) is opened through the periphery of the positioning rod (9).

4. The quick-release structure for a lamina screw according to claim 3, characterized in that, The arc of the arc rod (10) corresponds to the arc of the arc groove (7), and the arc of the arc groove (7) is 90°.

5. The quick-release structure for a lamina screw according to claim 1, characterized in that, A threaded rod is fixedly connected to the lower part of the screw head (1), and the lower end of the threaded rod is a pointed structure.

6. The quick-release structure for a lamina screw according to claim 1, characterized in that, Friction protrusions are provided on the periphery of the outer wall of the hand-twisting plate (6).

Images