Multi-angle adjustable mounting guide for lumbar screw

Abstract

The utility model relates to medical instrument technical field discloses lumbar screw multi -angle adjusting installation guider, including fixed plate, four fixed blocks are fixedly connected to the fixed plate top, and the adjacent side between left and right adjacent two fixed blocks is rotatably connected with first rotating frame, and the adjacent side between front and back adjacent two fixed blocks is rotably connected with second rotating frame, gear is fixedly connected with the first rotating frame right side and second rotating frame front side, and the gear is closely combined between the adjacent gear block. In the utility model, through rotating first knob and driving first screw rod to rotate, thereby drive the gear block on the moving part and move to separate, first rotating frame and second rotating frame can rotate freely to move the moving block on the top to any angle at this moment, and after determining the position, rotate first knob, drive the gear block on the moving part and jam the gear, thereby realize the angle of moving block and carry out the fixed quickly.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a multi-angle adjustable installation guide for lumbar screws. Background Technology

[0002] A lumbar screw placement guide is an important auxiliary instrument used in lumbar spine surgery. Accurate screw placement during lumbar surgery is crucial for treating lumbar spine diseases and restoring lumbar spine stability. This guide primarily assists surgeons in precisely determining the placement location and angle of the screw. By providing a clear guiding path, it helps surgeons accurately insert the screw into the predetermined location on the lumbar vertebrae, achieving effective fixation and support of the affected lumbar vertebrae, thus contributing to the recovery of lumbar spine function and the treatment of diseases.

[0003] The existing method of adjusting the angle of the installation guide is cumbersome and difficult to adapt to the individual differences in the lumbar spine of different patients and the complex lesions. This makes it impossible for doctors to insert the screw at the most ideal angle during surgery. After the angle is determined, the fixation process of the guide is relatively complicated and it can be displaced by slight external force during the operation, causing the originally determined angle to deviate and increasing the surgical risk. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a multi-angle adjustable installation guide for lumbar screws, aiming to improve the problem of cumbersome and time-consuming angle adjustment methods of existing guides.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lumbar screw multi-angle adjustable installation guide, comprising a fixing plate, four fixing blocks fixedly connected to the top of the fixing plate, a first rotating frame rotatably connected between adjacent sides of two adjacent left and right fixing blocks, a second rotating frame rotatably connected between adjacent sides of two adjacent front and rear fixing blocks, gears fixedly connected to the right side of the first rotating frame and the front side of the second rotating frame, the gears tightly engaging with adjacent tooth blocks, a moving block slidably connected between the first rotating frame and the second rotating frame, a fixing member fixedly connected to the front top of the fixing plate, a first threaded rod rotatably connected between the front and rear sides inside the fixing member, a moving member threadedly connected to the surface of the first threaded rod, two tooth blocks fixedly connected to the left and rear sides of the moving member, and a fixing assembly provided on the rear top of the fixing plate, the fixing assembly being used to fix the entire device.

[0006] Preferably, the fixing component includes a vacuum pump, which is fixedly connected to the fixing plate. A gas supply pipe is fixedly provided at the input end of the vacuum pump. Adsorption plates are provided on both the left and right sides of the fixing plate, and the rear sides of the two adsorption plates are fixedly connected to the gas supply pipe.

[0007] Preferably, two connecting blocks are fixedly connected to both the left and right sides of the fixing plate, and the two connecting blocks on the front side are threaded with second threaded rods inside, and the top ends of the two second threaded rods are fixedly connected with second knobs.

[0008] Preferably, both of the rear connecting blocks are slidably connected to slide rods, and the bottom ends of the slide rods are fixedly connected to the adjacent adsorption plates.

[0009] Preferably, the front end of the first threaded rod passes through and extends to the front side of the fixing member, and a first knob is fixedly connected to the front end of the first threaded rod.

[0010] Preferably, a soft pad is fixedly connected to the bottom of the fixing plate, and the soft pad is made of silicone.

[0011] Preferably, the top of the movable block has a circular groove.

[0012] Preferably, the bottom ends of both second threaded rods are fixedly connected to adjacent adsorption plates, and the bottom of the adsorption plates is made of silicone.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by rotating the first knob, the first threaded rod is rotated, thereby causing the toothed block on the moving part to move and disengage from the gear. At this time, the first rotating frame and the second rotating frame can rotate freely, thereby moving the top moving block to any angle. After determining the position, rotating the first knob causes the toothed block on the moving part to lock the gear, thereby quickly fixing the angle of the moving block, thus achieving quick fixing of different angles.

[0015] 2. In this utility model, rotating the second knob drives the second threaded rod to rotate, which in turn moves the bottom adsorption plate to fit tightly against the human body. The vacuum pump evacuates air from the gas delivery pipe and the adsorption plate, thereby creating a vacuum inside the adsorption plate. The strong adsorption force firmly fixes the guide to the human body, maintaining stability throughout the entire lumbar screw installation process, which greatly improves the stability and reliability of the surgical operation. Attached Figure Description

[0016] Figure 1 This is a main body diagram of the lumbar screw multi-angle adjustment installation guide proposed in this utility model;

[0017] Figure 2 A schematic diagram of the vacuum pump for the lumbar screw multi-angle adjustment installation guide proposed in this utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of the fixing component of the lumbar screw multi-angle adjustment installation guide proposed in this utility model.

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Fixed plate; 2. Soft pad; 3. Fixed block; 4. First rotating frame; 5. Moving block; 6. Circular groove; 7. Gear; 8. Fixing component; 9. First threaded rod; 10. First knob; 11. Moving component; 12. Connecting block; 13. Slide rod; 14. Second knob; 15. Second threaded rod; 16. Adsorption plate; 17. Vacuum pump; 18. Gas supply pipe; 19. Tooth block; 20. Second rotating frame. Detailed Implementation

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a lumbar screw multi-angle adjustable installation guide, including a fixed plate 1. Four fixed blocks 3 are fixedly connected to the top of the fixed plate 1. A first rotating frame 4 is rotatably connected between adjacent sides of two adjacent left and right fixed blocks 3. A second rotating frame 20 is rotatably connected between adjacent sides of two adjacent front and rear fixed blocks 3. Gears 7 are fixedly connected to the right side of the first rotating frame 4 and the front side of the second rotating frame 20. The gears 7 are tightly fitted with adjacent tooth blocks 19. A moving block 5 is slidably connected between the first rotating frame 4 and the second rotating frame 20. A fixing member 8 is fixedly connected to the top front side of the fixed plate 1. A first threaded rod 9 is rotatably connected between the front and rear sides inside the fixing member 8. A moving member 11 is threadedly connected to the surface of the first threaded rod 9. Two tooth blocks 19 are fixedly connected to the left and rear sides of the moving member 11. A fixing assembly is provided on the top rear side of the fixed plate 1. The fixing assembly is used to fix the whole device.

[0024] Specifically, rotating the first knob 10 causes the first threaded rod 9 to rotate, thereby causing the toothed block 19 on the moving part 11 to move and disengage from the gear 7. At this time, the first rotating frame 4 and the second rotating frame 20 can rotate freely, and the user can move the top moving block 5 to any desired angle. After determining the position, rotating the first knob 10 again causes the first threaded rod 9 to rotate, causing the toothed block 19 on the moving part 11 to lock the gear 7, thereby quickly fixing the angle of the moving block 5 and completing the quick fixing operation at different angles.

[0025] Reference Figure 2 The fixed assembly includes a vacuum pump 17, which is fixedly connected to the fixed plate 1. A gas supply pipe 18 is fixedly installed at the input end of the vacuum pump 17. Adsorption plates 16 are installed on both the left and right sides of the fixed plate 1, and the rear sides of the two adsorption plates 16 are fixedly connected to the gas supply pipe 18.

[0026] Specifically, the vacuum pump 17 is activated to evacuate the gas supply pipe 18 and the adsorption plate 16, thereby creating a vacuum inside the adsorption plate 16 and generating a strong adsorption force, which firmly fixes the guide to the human body and keeps it stable throughout the entire lumbar screw installation process. This greatly improves the stability and reliability of the surgical operation. Through vacuum adsorption, it can conform to the complex contours of different parts of the human body, ensuring that the fixation effect is not affected.

[0027] Reference Figure 1 Two connecting blocks 12 are fixedly connected to both the left and right sides of the fixed plate 1. The two connecting blocks 12 on the front side are threaded with second threaded rods 15 inside. The tops of the two second threaded rods 15 are fixedly connected with second knobs 14.

[0028] Specifically, the user can rotate the second knob 14 to drive the second threaded rod 15 to rotate, thereby moving the bottom adsorption plate 16 to achieve a close fit between the adsorption plate 16 and the human body surface, so as to achieve the purpose of firmly fixing the guide.

[0029] Reference Figure 1 The two connecting blocks 12 on the rear side are each slidably connected to a slide rod 13, and the bottom end of the slide rod 13 is fixedly connected to the adjacent adsorption plate 16.

[0030] Specifically, the slide bar 13 provides a stable guide for the movement of the adsorption plate 16, so that when the adsorption plate 16 moves under the drive of the second threaded rod 15, it can slide smoothly along the direction defined by the slide bar 13, avoiding deviation or shaking during the movement of the adsorption plate 16, and ensuring that the adsorption plate 16 can accurately fit the human body.

[0031] Reference Figure 1 and Figure 3 The front end of the first threaded rod 9 passes through and extends to the front side of the fixing member 8, and the front end of the first threaded rod 9 is fixedly connected to the first knob 10.

[0032] Specifically, the user can adjust the position of the moving part 11 by rotating the first knob 10 to drive the first threaded rod 9 to rotate.

[0033] Reference Figure 1 A soft pad 2, made of silicone material, is fixedly connected to the bottom of the fixing plate 1.

[0034] Specifically, the silicone pad 2 can improve the patient's comfort when using the guide. The silicone material is soft and has good elasticity, which can effectively cushion the pressure of the fixation plate 1 on the human body and avoid discomfort caused by the fixation plate 1 directly contacting the human body during long-term surgery. At the same time, silicone has good biocompatibility and low irritation to human skin, which can reduce the occurrence of allergies and various adverse reactions. It can also increase the friction between the fixation plate 1 and the human body, helping the guide to be placed more stably on the human body and further ensuring the stability of the guide during the surgical operation.

[0035] Reference Figure 1 The top of the movable block 5 has a circular groove 6.

[0036] Specifically, the circular groove 6 can provide a mounting position for other surgical instruments or components, making it easier for doctors to more accurately determine the center point of screw implantation.

[0037] Reference Figure 1 The bottom ends of the two second threaded rods 15 are fixedly connected to the adjacent adsorption plates 16, and the bottom of the adsorption plates 16 is made of silicone.

[0038] Specifically, when the second threaded rod 15 rotates, it can directly drive the adsorption plate 16 to move, achieving precise position adjustment for better fit to the human body. The adsorption plate 16 is made of silicone, which is soft and can adapt to the complex contours of the human body, enhancing the tightness of the fit. The good elasticity of silicone can buffer pressure and improve patient comfort. In addition, silicone has good biocompatibility, is less irritating to human skin, and reduces the risk of allergies. At the same time, the sealing performance of silicone helps to maintain the vacuum state after the adsorption plate 16 is evacuated, ensuring that the guide is firmly adsorbed to the human body.

[0039] Working principle: When using it, the user first places it in a suitable position, turns the second knob 14, and the second threaded rod 15 rotates to move the adsorption plate 16. The slide rod 13 in the rear connecting block 12 guides the movement of the adsorption plate 16 to ensure that it fits the human body accurately. Then, the vacuum pump 17 is started, and air is drawn from the silicone adsorption plate 16 through the air supply pipe 18 to form a vacuum, generating a strong adsorption force to firmly fix the guide to the human body. Because the silicone pad 2 at the bottom of the fixing plate 1 is soft, elastic, and biocompatible, it can improve comfort, buffer pressure, and increase friction to help the guide be placed stably.

[0040] When adjusting the angle, turn the first knob 10, and the first threaded rod 9 will rotate accordingly, causing the toothed block 19 on the moving part 11 to disengage from the gear 7. The first rotating frame 4 and the second rotating frame 20 can rotate freely. After moving the moving block 5 to the required angle, turn the first knob 10 again to make the toothed block 19 lock the gear 7 and fix the angle of the moving block 5. After the lumbar screw is fixed, the device can be removed.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lumbar screw multi-angle adjustable installation guide, including a fixing plate (1), characterized in that: The top of the fixed plate (1) is fixedly connected to four fixed blocks (3). A first rotating frame (4) is rotatably connected between adjacent sides of two adjacent left and right fixed blocks (3). A second rotating frame (20) is rotatably connected between adjacent sides of two adjacent front and rear fixed blocks (3). Gears (7) are fixedly connected to the right side of the first rotating frame (4) and the front side of the second rotating frame (20). The gears (7) are tightly fitted with adjacent tooth blocks (19). A moving block (5) is slidably connected between the first rotating frame (4) and the second rotating frame (20). A fixing member (8) is fixedly connected to the front top of the fixed plate (1). A first threaded rod (9) is rotatably connected between the front and rear sides inside the fixing member (8). A moving member (11) is threadedly connected to the surface of the first threaded rod (9). Two tooth blocks (19) are fixedly connected to the left and rear sides of the moving member (11). A fixing assembly is provided on the rear top of the fixed plate (1). The fixing assembly is used to fix the whole device.

2. The lumbar screw multi-angle adjustable installation guide according to claim 1, characterized in that: The fixed assembly includes a vacuum pump (17), which is fixedly connected to the fixed plate (1). A gas supply pipe (18) is fixedly provided at the input end of the vacuum pump (17). Adsorption plates (16) are provided on both the left and right sides of the fixed plate (1), and the rear sides of the two adsorption plates (16) are fixedly connected to the gas supply pipe (18).

3. The lumbar screw multi-angle adjustable installation guide according to claim 1, characterized in that: The fixed plate (1) has two connecting blocks (12) fixedly connected to both the left and right sides. The two connecting blocks (12) on the front side are threaded with second threaded rods (15), and the tops of the two second threaded rods (15) are fixedly connected with second knobs (14).

4. The lumbar screw multi-angle adjustable installation guide according to claim 3, characterized in that: The two connecting blocks (12) on the rear side are each slidably connected with a slide rod (13), and the bottom end of the slide rod (13) is fixedly connected to the adjacent adsorption plate (16).

5. The lumbar screw multi-angle adjustable installation guide according to claim 1, characterized in that: The front end of the first threaded rod (9) passes through and extends to the front side of the fixing member (8), and the front end of the first threaded rod (9) is fixedly connected to the first knob (10).

6. The lumbar screw multi-angle adjustable installation guide according to claim 1, characterized in that: The bottom of the fixing plate (1) is fixedly connected to a soft pad (2), which is made of silicone.

7. The lumbar screw multi-angle adjustable installation guide according to claim 1, characterized in that: The top of the movable block (5) is provided with a circular groove (6).

8. The lumbar screw multi-angle adjustable installation guide according to claim 3, characterized in that: The bottom ends of the two second threaded rods (15) are fixedly connected to the adjacent adsorption plates (16), the bottom of which is made of silicone.

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