Anti-falling spine nailing device

Abstract

The utility model provides an anti-falling spine nailing device which comprises an end head and a bone nail arranged at the bottom end of the end head, and the bone nail and the end head are detachably installed. Wherein a limiting assembly is arranged on the side wall, located at the joint of the bone nails, of the end head, one end of the limiting assembly is connected with the end head, the other end of the limiting assembly is connected with the bone nails in a clamped mode, and the limiting assembly is used for limiting the bone nails. The limiting assembly is arranged at the end of the connecting column, the limiting groove is formed in the bottom end of the connecting column, when the limiting assembly is connected with the end, the limiting groove in the bottom end is connected with the bone nail in a clamped mode, the bone nail is limited, the problem that the bone nail shakes is avoided, and therefore when the bone nail is nailed in, the situation that accurate positioning cannot be achieved due to large deviation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of spinal repair, in particular to an anti-dropping spinal nail device. Background Art

[0002] The spine is a bone in the back, located in the middle of the back, which is the central axis of the trunk. When observing the spine from the front or the back, the vertebral bodies gradually increase from top to bottom. The spine is basically straight, with a slight lateral curvature, and the angle of the lateral curvature is within 10 degrees. The spine is an important organ of the human body, and severe spinal diseases may lead to paralysis.

[0003] When nailing the spine, a medical pedicle screw is used to fix the spine. When the pedicle screw is nailed, the pedicle screw is loose after being installed with the mounting frame, resulting in the pedicle screw shaking during the process of fixing the spine, thus making it impossible to quickly perform precise positioning. Summary of the Utility Model

[0004] In order to overcome the existing problems, the embodiment of the utility model provides an anti-dropping spinal nail device. A limiting component is provided at the intersection of the end head and the bone nail, which includes a connecting column connected to the end head, and a limiting groove is provided at the bottom end of the connecting column. When the limiting component is connected to the end head, the limiting groove at the bottom end is mutually clamped with the bone nail, playing a role in limiting the bone nail, avoiding the problem of the bone nail shaking, so that when the bone nail is nailed, it will not deviate greatly and fail to achieve precise positioning.

[0005] The technical solution adopted by the embodiment of the utility model to solve its technical problems is as follows:

[0006] An anti-dropping spinal nail device, including an end head and a bone nail arranged at the bottom end of the end head, and the bone nail is detachably installed with the end head;

[0007] Wherein, a limiting component is provided on the side wall of the intersection of the end head and the bone nail. One end of the limiting component is connected to the end head, and the other end of the limiting component is clamped and connected to the bone nail for limiting the bone nail. The limiting component includes a connecting column connected to the end head. A limiting plate is provided on one side of the connecting column. Two convex rods are provided at one end of the limiting plate where the bone nail is located. A limiting groove is opened inside the two convex rods. The width of the limiting groove is greater than the size of the bone nail. When the connecting column inside the limiting component is connected to the connecting hole opened on the surface of the end head, the limiting groove at the bottom end of the limiting component is mutually clamped with the bone nail, playing a role in limiting the bone nail, avoiding the problem of the bone nail shaking, so that when the bone nail is nailed, it will not deviate greatly and fail to achieve precise positioning.

[0008] Preferably, the end is a structure with a through axis. A limiting member is provided on the upper surface at the intersection of the end and the bone nail. After connecting the bone nail to the end, the limiting member is removed and placed at the intersection of the end and the bone nail, and the limiting member plays a role in limiting the bone nail.

[0009] Preferably, a connecting member is provided at the top of the end. The connection mode between the end and the connecting member is a screwed connection. A threaded groove is provided on the inner wall of the end at the position of the connecting member. When connecting the connecting member to the end, the connecting member is placed at the top of the end, and then the connecting member is rotated. The threaded groove on the inner wall of the end and the connecting member rotate, so that the connecting member is screwed into the end.

[0010] Preferably, the outer surface of the bone nail is provided with threads, and the bottom end of the bone nail is provided with an inclined structure. When the bone nail is driven into the spine, due to the setting of the inclined structure, the bone nail can quickly enter the spine, and the threads provided on the outer surface can improve the stability of the overall structure.

[0011] Preferably, a connection hole is provided at the intersection of the end and the limiting component. The cross-sectional diameter of the connection hole is the same as the cross-sectional diameter of the connection column. When connecting the limiting component to the end, the connection column inside the limiting component is connected to the connection hole provided on the surface of the end, so that the limiting component can be quickly separated and connected through the connection of the connection column and the connection hole.

[0012] The advantages of the embodiment of the present invention are:

[0013] A limiting component is provided at the intersection of the end and the bone nail. It includes a connection column connected to the end, and a limiting groove is provided at the bottom end of the connection column. When the limiting component is connected to the end, the limiting groove at the bottom is clamped with the bone nail, playing a role in limiting the bone nail and avoiding the problem of the bone nail shaking. Thus, when the bone nail is driven in, it will not fail to be accurately positioned due to a large deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of the anti-detachment spinal nail device of the present invention;

[0016] Figure 2 It is a schematic side view structure diagram of the anti-detachment spinal nail device of the present invention;

[0017] Figure 3 It is a schematic front view structure diagram of the anti-detachment spinal nail device of the present invention with the limiting component removed;

[0018] Figure 4Schematic diagram of the overall structure of the anti - shedding spinal nail device of the present utility model removing the limiting component;

[0019] Figure 5 Schematic diagram of the overall structure of the limiting component in the anti - shedding spinal nail device of the present utility model.

[0020] Main reference numeral description:

[0021] 1. Connecting piece; 2. Limiting piece; 3. End head; 4. Limiting component; 41. Limiting plate; 42. Connecting column; 43. Convex rod; 44. Limiting groove; 5. Bone nail; 6. Connecting hole. Detailed implementation manners

[0022] In the embodiment of the present utility model, by providing an anti - shedding spinal nail device, the problems in the prior art are solved. A limiting component is provided at the intersection of the end head and the bone nail. It includes a connecting column connected to the end head, and a limiting groove is provided at the bottom end of the connecting column. When the limiting component is connected to the end head, the limiting groove at the bottom end is engaged with the bone nail, playing a role in limiting the bone nail and avoiding the problem of shaking during fixation, so that when the bone nail is driven in, it will not be unable to be accurately positioned due to a large deviation.

[0023] The technical solution in the embodiment of the present utility model to solve the above problems has the following general idea:

[0024] Embodiment 1:

[0025] This embodiment gives the specific structure of the anti - shedding spinal nail device. As Figures 1-5 shown, it includes an end head 3 and a bone nail 5 provided at the bottom end of the end head 3. The bone nail 5 and the end head 3 are detachably installed;

[0026] Among them, a limiting component 4 is provided on the side wall of the intersection of the end head 3 and the bone nail 5. One end of the limiting component 4 is connected to the end head 3, and the other end of the limiting component 4 is connected to the bone nail 5 in a clamping manner for limiting the bone nail 5. The limiting component 4 includes a connecting column 42 connected to the end head 3. A limiting plate 41 is provided on one side of the connecting column 42. Two convex rods 43 are provided at one end of the limiting plate 41 located at the bone nail 5. A limiting groove 44 is opened inside the two convex rods 43. The width of the limiting groove 44 is greater than the size of the bone nail 5. When the connecting column 42 inside the limiting component 4 is connected to the connecting hole 6 opened on the surface of the end head 3, the limiting groove 44 at the bottom end of the limiting component 4 is engaged with the bone nail 5, playing a role in limiting the bone nail 5 and avoiding the problem of shaking of the bone nail 5, so that when the bone nail 5 is driven in, it will not be unable to be accurately positioned due to a large deviation.

[0027] By adopting the above - mentioned technical solution:

[0028] The width of the limiting groove 44 is greater than the size of the bone nail 5. When the connecting column 42 inside the limiting component 4 is connected to the connecting hole 6 opened on the surface of the end 3, the limiting groove 44 at the bottom end of the limiting component 4 is clamped with the bone nail 5, playing a role in limiting the bone nail 5 and avoiding the problem of the bone nail 5 shaking. Thus, when the bone nail 5 is driven in, it will not fail to be accurately positioned due to a large deviation.

[0029] Embodiment 2:

[0030] This embodiment gives the specific structure of the anti - shedding spinal nail device, as Figures 1-5 shown. The end 3 has a structure with a through - axis. A limiting member 2 is provided on the upper surface at the intersection of the end 3 and the bone nail 5. After connecting the bone nail 5 and the end 3, the limiting member 2 is taken out and placed at the intersection of the end 3 and the bone nail 5, playing a role in limiting the bone nail 5 through the limiting member 2.

[0031] A connecting member 1 is provided at the top of the end 3. The connection method between the end 3 and the connecting member 1 is a screw - connection. A threaded groove is provided on the inner wall of the end 3 at the position of the connecting member 1. When connecting the connecting member 1 and the end 3, the connecting member 1 is placed at the top of the end 3, and then the connecting member 1 is rotated. The connecting member 1 rotates with the threaded groove on the inner wall of the end 3, so that the connecting member 1 is screwed into the end 3.

[0032] The outer surface of the bone nail 5 is provided with threads, and the bottom end of the bone nail 5 is set as an inclined structure. When driving the bone nail 5 into the spine, due to the setting of the inclined structure, the bone nail 5 can quickly enter the spine, and the threads provided on the outer surface can improve the stability of the overall structure.

[0033] A connecting hole 6 is opened at the intersection of the end 3 and the limiting component 4. The cross - sectional diameter of the connecting hole 6 is the same as the cross - sectional diameter of the connecting column 42. When connecting the limiting component 4 and the end 3, the connecting column 42 inside the limiting component 4 is connected to the connecting hole 6 opened on the surface of the end 3, so that the limiting component 4 can be quickly separated and connected through the connection between the connecting column 42 and the connecting hole 6.

[0034] By adopting the above - mentioned technical solutions:

[0035] Take out the limiting member 2 and place it at the intersection of the end 3 and the bone nail 5, playing a role in limiting the bone nail 5 through the limiting member 2. When connecting the connecting member 1 and the end 3, place the connecting member 1 at the top of the end 3, and then rotate the connecting member 1. The connecting member 1 rotates with the threaded groove on the inner wall of the end 3, so that the connecting member 1 is screwed into the end 3.

[0036] Working principle: Take out the bone nail 5, insert the bone nail 5 into the end 3. After connecting the bone nail 5 and the end 3, take out the limiting member 2 and place the limiting member 2 at the intersection of the end 3 and the bone nail 5. The limiting member 2 plays a role in limiting the bone nail 5. When connecting the connecting member 1 and the end 3, place the connecting member 1 at the top of the end 3, and then rotate the connecting member 1. The connecting member 1 rotates with the thread groove on the inner wall of the end 3, so that the connecting member 1 is screwed into the end 3.

[0037] Connect the connecting column 42 inside the limiting component 4 with the connecting hole 6 opened on the surface of the end 3, so that the limiting component 4 can be quickly separated and connected through the connection between the connecting column 42 and the connecting hole 6. The limiting groove 44 at the bottom of the limiting component 4 is engaged with the bone nail 5, playing a role in limiting the bone nail 5 and avoiding the problem of the bone nail 5 shaking. Thus, when the bone nail 5 is nailed in, it will not fail to be accurately positioned due to a large deviation.

[0038] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. The spinal nailing device for preventing falling off is characterized by: It comprises an end head (3) and a bone screw (5) arranged at the bottom end of the end head (3), wherein the bone screw (5) and the end head (3) are detachably mounted; Wherein, a limiting component (4) is provided on the side wall of the intersection of the end head (3) and the bone screw (5), one end of the limiting component (4) is connected to the end head (3), and the other end of the limiting component (4) is connected to the bone screw (5) by clamping, so as to limit the position of the bone screw (5).

2. The spinal nailing device for preventing falling off according to claim 1, characterized in that: The limiting assembly (4) comprises a connecting column (42) connected to the end (3), a limiting plate (41) is provided on one side of the connecting column (42), and the limiting plate (41) is provided with two protruding rods (43) at one end of the bone screw (5), and limiting grooves (44) are provided inside the two protruding rods (43).

3. The spinal nailing device for preventing falling off according to claim 1, characterized in that: The end head (3) is a structure through which the axis penetrates, and a limiting piece (2) is provided on the upper surface of the intersection of the end head (3) and the bone screw (5).

4. The spinal nailing device for preventing falling off according to claim 1, characterized in that: A connecting piece (1) is provided at the top end of the end head (3), and the end head (3) and the connecting piece (1) are connected by a screw connection.

5. The spinal nailing device for preventing falling off according to claim 1, characterized in that: The outer surface of the bone screw (5) is provided with a thread, and the bottom end of the bone screw (5) is provided with an inclined structure.

6. The spinal nailing device for preventing falling off according to claim 2, characterized in that: A connecting hole (6) is provided at the intersection of the end head (3) and the limiting assembly (4), and the cross-sectional diameter of the connecting hole (6) is the same as the cross-sectional diameter of the connecting column (42).

7. The spinal nailing device for preventing falling off according to claim 2, characterized in that: The width of the limiting groove (44) is greater than the size of the bone screw (5).

8. The spinal nailing device for preventing falling off according to claim 4, characterized in that: The inner wall of the end head (3) is provided with a thread groove at the position of the connecting piece (1).

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