Adjustable spine bone nail

Abstract

The utility model relates to the technical field of medical instruments, in particular to an adjustable spine bone nail which comprises a connecting rod, a plurality of nuts are arranged at the bottom of the connecting rod, a screw plug is further arranged in each nut, the bottom end in each nut is connected with a pressing pad in a sliding mode, a ball is arranged at the bottom of each pressing pad, and the ball is connected with the connecting rod in a sliding mode. A top screw rod is arranged at the bottom of each ball body, an adjuster is arranged at the bottom of each top screw rod, an adjuster internal thread is fixed in each adjuster, a bottom screw is arranged at the bottom of each adjuster, and a spiral nail head is fixed at the bottom of each bottom screw; the top screw can be driven to rotate universally through rotation of the ball body, so that the adjustor rotates universally, the spiral nail head rotates universally and can adapt to spines at different positions, the fixing effect of equipment is guaranteed, and meanwhile the spine fixing accuracy is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixed medical devices, and specifically relates to an adjustable spinal nail. Background Art

[0002] Spinal internal fixation technology, as an important means for treating spinal diseases, has made remarkable progress since the early simple surgical technique of using silver wire to fix the cervical vertebrae. The development of this technology is mainly to meet the complex spinal orthopedic needs, such as correcting scoliosis deformity through anterior or posterior surgery, or performing multi-stage reduction of spinal deformity. An important advancement in spinal internal fixation technology is the introduction of pedicle screw fixation technology, which has become the core of spinal internal fixation.

[0003] With the progress of technology and medical technology, especially the introduction of vertebral body screws and pedicle screw technology, spinal internal fixation technology has been revolutionarily improved. These advanced technologies allow surgeons to more accurately position and fix spinal bones during surgery, thus effectively treating various complex spinal deformities, such as scoliosis and spondylolisthesis.

[0004] In addition, these modern fixation technologies not only improve the success rate of surgery and the patient's recovery speed, but also reduce the surgical risk and the incidence of complications. The pedicle screw fixation technology is particularly prominent. By placing screws at key positions of the spine, it has stronger stability and provides a longer and more stable treatment effect for patients.

[0005] However, existing fixation devices usually need to replace bone nails of different sizes according to different positions of the spine, which reduces the usage range of the entire device and wastes resources. In view of this, the utility model designs an adjustable spinal nail to solve the above problems. Summary of the Utility Model

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an adjustable spinal nail, which effectively solves the problems raised in the above background art.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An adjustable spinal nail, comprising a connecting rod, wherein a plurality of nuts are provided at the bottom of the connecting rod, each nut is provided with a positioning hole, connecting rod positioning grooves are fixed at the left and right ends of each nut, a plug is further provided inside each nut, a pressure pad is slidably connected to the bottom end inside each nut, a connecting rod stabilizing ring is fixed to the top of each pressure pad, each connecting rod stabilizing ring is closely attached to the connecting rod above it, a sphere is provided at the bottom of each pressure pad, a top screw rod is provided at the bottom of each sphere, a regulator is provided at the bottom of each top screw rod, a top positioning hole is provided on each regulator, a bottom positioning hole is provided at the bottom of each top positioning hole, an internal thread of the regulator is fixed inside each regulator, a bottom screw is provided at the bottom of each regulator, and a spiral nail head is fixed to the bottom of each bottom screw.

[0008] Preferably, an internal thread of the nut is fixed inside the top end of each nut, an internal thread of the plug is meshed with the internal thread of the nut, the internal thread of the plug is fixedly connected to the plug inside it, and the plug is closely attached to the connecting rod at its bottom.

[0009] Preferably, a sphere positioning cavity is fixed to the bottom of each nut, the sphere positioning cavity is clamped with the pressure pad inside it, a pressure pad positioning hole is provided on each pressure pad, the axis of the pressure pad positioning hole is the same as that of the positioning hole outside it, a sphere locking ring is fixed to the bottom of each pressure pad, and the sphere locking ring is slidably connected to the sphere at its bottom.

[0010] Preferably, a top screw is fixed to the bottom of each sphere, the sphere is fixedly connected to the top screw rod at its bottom, the top screw rod is meshed with the internal thread of the regulator inside the regulator at its bottom, a top bolt is meshed inside each top positioning hole, and a bottom bolt is meshed inside each bottom positioning hole.

[0011] Preferably, a bottom screw rod is meshed with the lower end inside the internal thread of each regulator, and the bottom screw rod is fixedly connected to the bottom screw at its bottom.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] By inserting a bolt into the cooperation of the pressure pad positioning hole and the positioning hole, the pressure pad can be fixed, thereby preventing the connecting rod from rotating. At the same time, through the meshing of the internal thread of the plug outside the plug with the internal thread of the nut, the bottom of the plug can be closely attached to the connecting rod, so that a plurality of nuts are closely attached to the connecting rod, so that the whole device is relatively fixed, so as to ensure the connection effect of the device and the effect of fixing the spine of the device.

[0014] The utility model can provide a rotation channel for the sphere through the sphere locking ring. At the same time, the rotation of the sphere can drive the top screw to rotate in all directions, so that the regulator rotates in all directions, so that the screw head rotates in all directions, so as to adapt to the spine at different positions, ensure the fixing effect of the device, and ensure the accuracy of spine fixation.

[0015] The utility model can adjust the height of the bottom screw through the cooperation of the top screw and the bottom screw, so as to adapt to the spine at different heights, further improve the use range of the device, improve the utilization rate of the device, save resources, and at the same time, the screw head can increase the stability of the device. Description of the Drawings

[0016] The drawings are used to provide a further understanding of the utility model and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model and do not constitute a limitation to the utility model.

[0017] In the drawings:

[0018] Figure 1 is the overall schematic diagram of the utility model;

[0019] Figure 2 is the top schematic diagram of the utility model;

[0020] Figure 3 is the enlarged schematic diagram of the spinal bone screw of the utility model;

[0021] Figure 4 is the cross-sectional schematic diagram of the spinal bone screw of the utility model;

[0022] Figure 5 is the exploded schematic diagram of the spinal bone screw of the utility model.

[0023] In the figure: 1 - nut; 2 - top screw; 3 - plug; 4 - connecting rod; 5 - regulator; 6 - bottom screw; 7 - pressure pad; 101 - internal thread of nut; 102 - positioning hole; 103 - positioning groove of connecting rod; 104 - spherical positioning cavity; 201 - top screw rod; 202 - sphere; 301 - internal thread of plug; 501 - top positioning hole; 502 - bottom positioning hole; 503 - top bolt; 504 - bottom bolt; 505 - internal thread of regulator; 601 - screw head; 602 - bottom screw rod; 701 - positioning hole of pressure pad; 702 - stabilizing ring of connecting rod; 703 - sphere locking ring. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1 consists of Figures 1 - 3 and Figure 5Provided that, the utility model includes a connecting rod 4, the connecting rod 4 is made of stainless steel material, the connecting rod 4 is used to connect a plurality of the nuts 1, so as to achieve the purpose of positioning a plurality of the nuts 1, a plurality of nuts 1 are arranged at the bottom of the connecting rod 4, the nuts 1 are made of stainless steel material, the nuts 1 are used to position the plug 3, each nut 1 is provided with a positioning hole 102, and the positioning hole 102 and the gasket positioning hole 701 cooperate to position the gasket 7. Connecting rod positioning grooves 103 are fixed at the left and right ends of each nut 1, the connecting rod positioning grooves 103 are made of stainless steel material, and the connecting rod positioning grooves 103 are used to clamp the gasket 7. A plug 3 is further arranged inside each nut 1, the plug 3 is made of stainless steel material, and the plug 3 is used to position the nut 1 and the connecting rod 4. A gasket 7 is slidably connected to the bottom end inside each nut 1, the gasket 7 is made of stainless steel material, and the gasket 7 is used to fix the sphere locking ring 703. A connecting rod stabilizing ring 702 is fixed at the top of each gasket 7, the connecting rod stabilizing ring 702 is made of stainless steel material, and the connecting rod stabilizing ring 702 is used to support the connecting rod 4, so as to prevent the connecting rod 4 from rotating, thereby ensuring the stability of the connecting rod 4. Each connecting rod stabilizing ring 702 is closely attached to the connecting rod 4 at its top. A sphere 202 is arranged at the bottom of each gasket 7, the sphere 202 has a spherical structure, the sphere 202 is made of stainless steel material, and the sphere 202 can rotate inside the sphere locking ring 703, so that the sphere 202 can rotate in all directions, thereby ensuring that the entire device can adapt to spinal columns of different shapes, and thus ensuring the application range of the bone screw. A top screw 201 is arranged at the bottom of each sphere 202, the top screw 201 is made of stainless steel material, and the top screw 201 can change the position of the regulator 5 by meshing with the internal thread 505 of the regulator, so as to achieve adjustment. A regulator 5 is arranged at the bottom of each top screw 201, the regulator 5 is made of stainless steel material, and the regulator 5 is used to connect the top screw 201 and the bottom screw 602. Each regulator 5 is provided with a top positioning hole 501, and the top positioning hole 501 provides a moving path for the top bolt 503. A bottom positioning hole 502 is arranged at the bottom of each top positioning hole 501, and the bottom positioning hole 502 provides a path for the bottom bolt 504. An internal thread 505 of the regulator is fixed inside each regulator 5, the internal thread 505 of the regulator is made of stainless steel material, and the internal thread 505 of the regulator facilitates the lifting of the top screw 201 and the bottom screw 602. A bottom screw 6 is arranged at the bottom of each regulator 5, the bottom screw 6 is made of stainless steel material, and the bottom screw 6 is used to support the screw head 601. A screw head 601 is fixed at the bottom of each bottom screw 6, and the screw head 601 is made of alloy material.The screw head 601 is convenient for screwing into the spine, thus ensuring the spinal fixation effect.

[0026] Embodiment 2, based on Embodiment 1, is given by Figure 4 Each top inside of the nut 1 is fixed with a nut internal thread 101. The nut internal thread 101 is made of alloy material. The nut internal thread 101 is used to position the plug internal thread 301. Each nut internal thread 101 is meshed and connected with a plug internal thread 301. The plug internal thread 301 is made of alloy material. The plug internal thread 301 is used to position the plug 3. Each plug internal thread 301 is fixedly connected with the plug 3 inside it. Each plug 3 is closely attached to the connecting rod 4 at its bottom. Each bottom of the nut 1 is fixed with a spherical positioning cavity 104. The spherical positioning cavity 104 is made of alloy material. The spherical positioning cavity 104 is used to position the pressure pad 7. Each spherical positioning cavity 104 is clamped with the pressure pad 7 inside it. The inner diameter of each spherical positioning cavity 104 is slightly smaller than the outer diameter of the pressure pad 7. Each pressure pad 7 is provided with a pressure pad positioning hole 701. The axis of each pressure pad positioning hole 701 is the same as that of the positioning hole 102 outside it. Each bottom of the pressure pad 7 is fixed with a spherical locking ring 703. The spherical locking ring 703 is made of stainless steel material. The spherical locking ring 703 is used to position the sphere 202. Each spherical locking ring 703 is slidably connected with the sphere 202 at its bottom. Each bottom of the sphere 202 is fixed with a top screw 2. The top screw 2 is made of stainless steel material. The top screw 2 is used to connect the top screw rod 201 and the sphere 202. Each sphere 202 is fixedly connected with the top screw rod 201 at its bottom. Each top screw rod 201 is meshed and connected with the regulator internal thread 505 inside the regulator 5 at its bottom. Each top positioning hole 501 is meshed and connected with a top bolt 503. The top bolt 503 is made of stainless steel material. The top bolt 503 is used to position the top screw rod 201. Each bottom positioning hole 502 is meshed and connected with a bottom bolt 504. The bottom bolt 504 is made of stainless steel material. The bottom bolt 504 is used to position the bottom screw rod 602. Each lower end inside the regulator internal thread 505 is meshed and connected with a bottom screw rod 602. The bottom screw rod 602 is made of stainless steel material. The bottom screw rod 602 can drive the bottom screw 6 to move up and down by rotation. Each bottom screw rod 602 is fixedly connected with the bottom screw 6 at its bottom;

[0027] When using this device, the staff members sequentially insert multiple said top screws 2 into the inside of said nut 1. At this time, due to the effect of said sphere 202, it can prevent said sphere 202 from falling from the bottom of said sphere positioning cavity 104. Further, the staff members sequentially place said pressure pad 7 on the top of said sphere 202. Further, the staff members rotate said pressure pad 7, so that the axes of said pressure pad positioning hole 701 and said positioning hole 102 are corresponding. Further, the staff members fix said pressure pad 7 and said nut 1 outside it through bolts. Further, the staff members place said connecting rod 4 into the inside of said nut 1 according to the required number of said nuts 1. At this time, due to the effect of said connecting rod positioning groove 103, it can position said connecting rod 4. Further, the staff members sequentially make the bottom surface of said plug 3 closely contact with said connecting rod 4 through said plug internal thread 301 and said nut internal thread 101, so as to achieve the purpose of connecting multiple said nuts 1, thus ensuring the stability of the whole device. Further, the staff members sequentially screw said regulator 5 to the bottom of said top screw 201. Further, the staff members screw said top bolt 503 into said top positioning hole 501, so as to fix said top screw 201 and said regulator 5. At this time, due to the effect of said sphere 202 and said connecting rod stabilizing ring 702, said regulator 5 can rotate and change direction at the same time. Further, the staff members screw multiple said bottom screws 602 into the spine according to the requirements. Further, the staff members adjust the distance between multiple said nuts 1 according to the different positions of said screw head 601. Further, the staff members make each said bottom screw 602 engage with said 605 on its top by rotating said regulator 5. At this time, due to the effect of said sphere 202, said regulator 5 can deflect, so that said connecting rod 4 can be kept horizontal while said bottom screws 602 in different directions can be inserted into said regulator 5 on its top. Further, the staff members can fix said bottom screw 602 through the cooperation of said bottom bolt 504 and said bottom positioning hole 502. At this time, the purpose of fixing the spine can be achieved, thus realizing adjustability.

[0028] The working process of the present utility model is as follows: when using this device, the staff sequentially inserts a plurality of the top screws 2 into the inside of the nut 1. At this time, due to the effect of the sphere 202, it can prevent the sphere 202 from falling from the bottom of the sphere positioning cavity 104. Further, the staff sequentially places the pressure pad 7 on the top of the sphere 202. Further, the staff rotates the pressure pad 7, so that the axes of the pressure pad positioning hole 701 and the positioning hole 102 are corresponding. Further, the staff fixes the pressure pad 7 and the nut 1 outside it through a bolt. Further, the staff places the connecting rod 4 into the inside of the nut 1 according to the required number of the nuts 1. At this time, due to the effect of the connecting rod positioning groove 103, the connecting rod 4 can be positioned. Further, the staff makes the bottom surface of the plug 3 closely adhere to the connecting rod 4 through the plug internal thread 301 and the nut internal thread 101 in sequence, so as to achieve the purpose of connecting a plurality of the nuts 1, thereby ensuring the stability of the whole device. Further, the staff sequentially screws the adjuster 5 to the bottom of the top screw 201. Further, the staff screws the top bolt 503 into the top positioning hole 501, so that the top screw 201 is fixed to the adjuster 5. At this time, due to the effect of the sphere 202 and the connecting rod stabilizing ring 702, the adjuster 5 can rotate and change directions at the same time. Further, the staff screws a plurality of the bottom screws 602 into the spine according to the requirements. Further, the staff adjusts the distance between a plurality of the nuts 1 according to the different positions of the screw heads 601. Further, the staff makes each bottom screw 602 mesh with the 605 at its top by rotating the adjuster 5. At this time, due to the effect of the sphere 202, the adjuster 5 can deflect, so that the connecting rod 4 can be kept horizontal while the bottom screws 602 in different directions can be inserted into the adjuster 5 at its top. Further, the staff can fix the bottom screw 602 through the cooperation of the bottom bolt 504 and the bottom positioning hole 502. At this time, the purpose of fixing the spine can be achieved, thereby realizing adjustability.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0030] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable spinal bone screw, characterized in that: The invention comprises a connecting rod (4), wherein a plurality of nuts (1) are provided at the bottom of the connecting rod (4), each of the nuts (1) is provided with a positioning hole (102), each of the nuts (1) is fixed with a connecting rod positioning groove (103) at both ends, each of the nuts (1) is further provided with a screw plug (3), each of the nuts (1) is slidably connected with a pressure pad (7) at the bottom end thereof, each of the pressure pads (7) is fixed with a connecting rod stabilizing ring (702) at the top thereof, each of the connecting rod stabilizing rings (702) is tightly fitted with the connecting rod (4) at the top thereof, and each of the pressure pads (7 ) is provided with a sphere (202) at the bottom, each of the spheres (202) is provided with a top screw (201) at the bottom, each of the top screws (201) is provided with an adjuster (5) at the bottom, each of the adjusters (5) is provided with a top positioning hole (501), each of the top positioning holes (501) is provided with a bottom positioning hole (502) at the bottom, each of the adjusters (5) is internally fixed with an adjuster internal thread (505), each of the adjusters (5) is provided with a bottom screw (6) at the bottom, and each of the bottom screws (6) is fixed with a spiral nail head (601) at the bottom.

2. The adjustable spinal bone screw according to claim 1, characterized in that: A nut internal thread (101) is fixed inside the top of each nut (1), each nut internal thread (101) is meshedly connected with a screw plug internal thread (301), each screw plug internal thread (301) is fixedly connected to the screw plug (3) inside it, and each screw plug (3) is tightly fitted with the connecting rod (4) at its bottom.

3. The adjustable spinal bone screw according to claim 2, characterized in that: A spherical positioning cavity (104) is fixed at the bottom of each nut (1), each spherical positioning cavity (104) is snap-connected with the pressure pad (7) inside it, each pressure pad (7) is provided with a pressure pad positioning hole (701), each pressure pad positioning hole (701) is coaxial with the positioning hole (102) outside it, and a spherical locking ring (703) is fixed at the bottom of each pressure pad (7), each spherical locking ring (703) is slidably connected with the ball (202) at its bottom.

4. The adjustable spinal bone screw according to claim 3, characterized in that: A top screw (2) is fixed to the bottom of each sphere (202); each sphere (202) is fixedly connected to the top screw rod (201) at its bottom; each top screw rod (201) is meshingly connected to the adjuster internal thread (505) inside the adjuster (5) at its bottom; a top bolt (503) is meshingly connected to the inside of each top positioning hole (501); and a bottom bolt (504) is meshingly connected to the inside of each bottom positioning hole (502).

5. The adjustable spinal bone screw according to claim 4, characterized in that: The lower end of the inner thread (505) of each adjuster is meshedly connected with a bottom screw rod (602), and each bottom screw rod (602) is fixedly connected to the bottom screw (6) at its bottom.

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