Auxiliary distraction orthopedic device for human spinal deformities

Abstract

The application discloses a human spinal deformity auxiliary distraction orthopedic device and relates to the technical field of medical apparatuses, which comprises a box body, installation assemblies are symmetrically arranged on the left and right sides of the box body, and a stepping motor is installed at the center of the top of the box body. The stepping motor, the gear and the rack are arranged. When the patient's spine is distracted and orthopedic, the stepping motor can be driven by the power supply box to make the stepping motor drive the rotating rod to rotate, the rotating rod drives the gear to rotate, the gear drives the two racks on the outside to move in opposite directions, the two racks drive the corresponding connecting plates to move, the connecting plates drive the spine nails on the corresponding movable arms to move horizontally, the spine nails are moved, the patient's spine is distracted and orthopedic, and after the spine nails are moved to the appropriate positions, the stepping motor can be turned off. The stepping motor has the self-locking function, the position of the spine nail can be locked, the stability is high, and the safety performance is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a human spinal deformity auxiliary distraction orthopedic device. BACKGROUND

[0002] When the human spine is deformed due to fracture, disease, etc., the common method is to install a spinal fixator at the deformed part of the spine through surgery to perform orthopedic and support on the spine, helping the spine to restore function or delay disease progression.

[0003] The human spinal deformity auxiliary distraction orthopedic device with patent number CN202120255253.9 can press the connecting part in the direction of the spine during spinal distraction, and can release the hand pressing the connecting part in the direction of the spine at any time during the distraction. This is more secure for dynamic monitoring of nerve function during the process of distracting the spine during surgery, and can reset the spine to avoid physical injury when problems are found in the first time. However, it still has some defects in actual use, such as: during distraction and orthopedic treatment, the medical staff manually applies force with their palms to push the overall device to distract and orthopedically treat the patient's spine. However, manual force application can affect the patient's spine distraction and orthopedic treatment by the medical staff's own state, which can easily cause safety hazards and insufficient safety performance.

[0004] Therefore, the present application provides a human spinal deformity auxiliary distraction orthopedic device. SUMMARY

[0005] The technical problem solved by the present application is to overcome the safety performance deficiencies and single structure of the prior art, and to provide a human spinal deformity auxiliary distraction orthopedic device.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a human spinal deformity auxiliary distraction orthopedic device, comprising a box body, the left and right sides of the box body are provided with mounting assemblies, and a stepping motor is installed at the center of the top of the box body, a rotating rod is fixedly connected to the bottom of the stepping motor, a gear is arranged in the inner cavity of the box body, the bottom end of the rotating rod penetrates the box body and is rotatably connected with the gear, two racks are engaged with the outer side of the gear, a connecting plate is fixedly connected to each of the two racks, a through slot is formed in the front and rear sides of the box body, the side of the connecting plate away from the rack penetrates the through slot and is slidably connected with the inner wall of the through slot, and a movable arm is arranged on the outer side of the connecting plate, a positioning assembly is arranged between the movable arm and the connecting plate, and a spinal nail is installed on the movable arm.

[0007] Preferably, the installation assembly includes four side frames, which are fixedly connected to the left and right sides of the housing, with two side frames on the same side arranged front and back. A movable sleeve is movably installed on the outer side of each side frame, and a pad is fixedly connected to the bottom of the movable sleeve. Several screws are threaded onto the pad, and a handwheel is fixedly installed at the bottom of each screw. A pressure plate is fixedly installed at the top of each screw, and a limit plate is provided on the top of the pressure plates. The limit plate is fixedly connected to the side wall of the movable sleeve.

[0008] Preferably, the positioning component includes a semi-toothed movable wheel, which is fixedly connected to the side wall of the movable arm. A side groove is provided at the bottom edge of the connecting plate. The semi-toothed movable wheel is rotatably connected to the top of the inner wall of the side groove. A retaining tooth is engaged on the outer side of the semi-toothed movable wheel. A movable block is fixedly connected to the outer side of the retaining tooth. A rectangular groove is provided on the inner wall of the side groove. The side of the movable block away from the retaining tooth extends into the inner cavity of the rectangular groove. A spring is fixedly connected between the movable block and the inner wall of the rectangular groove.

[0009] Preferably, the side frame and the outer wall of the adjacent movable sleeve are provided with a number of threaded holes, and the movable sleeve is threaded with two plum blossom bolts, one end of which is threaded into the inner cavity of the corresponding threaded hole on the side frame.

[0010] Preferably, a slot is provided on the bottom of the movable arm, and the top of the spinal nail is embedded in the inner cavity of the slot.

[0011] Preferably, the movable arm has a circular hole at the top, and a fixing bolt is threaded to the bottom of the inner wall of the circular hole. The spinal nail has a threaded groove at the top, and the bottom end of the fixing bolt is threaded to the inner cavity of the threaded groove.

[0012] Preferably, a slider is fixedly connected to the inner wall of the through groove, and a sliding groove is formed on the outer wall of the connecting plate, with the slider slidably connected to the inner cavity of the sliding groove.

[0013] Preferably, a power supply box is installed on the top of the enclosure near the front side, and a controller is installed on the top of the enclosure near the rear side.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In use, this invention, equipped with a stepper motor, gears, and racks, can drive the stepper motor via a power supply box when expanding and correcting the patient's spine. The stepper motor drives a rotating rod to rotate, which in turn drives the gears to rotate. The gears then drive the two outer racks to move in opposite directions. The two racks then drive the corresponding connecting plates to move, and the connecting plates drive the spinal screws on the corresponding movable arms to move horizontally. During the movement of the spinal screws, the patient's spine is expanded and corrected. After the spinal screws have moved to the appropriate position, the stepper motor can be turned off. The stepper motor also has a self-locking function, which can lock the position of the spinal screws, resulting in high stability and safety.

[0016] 2. In use, this invention, equipped with a pressure plate, a limiting plate, and handwheels, allows for easy installation. Multiple pads are placed at the bottom of the operating table, and the limiting plate is placed at the top. Rotating the handwheels sequentially drives the screw, which in turn moves the pressure plate upwards. This upward movement of the pressure plate, in conjunction with the limiting plate, secures the movable sleeve, side frames, and other components to the operating table, further fixing the entire device to the table. If subsequent height adjustments to the housing, movable arm, or other components are needed, multiple bolts can be removed, and the side frames can be moved simultaneously, allowing them to work together to adjust the housing's height. After adjustment, the bolts are used to secure the device again. The operation is convenient.

[0017] 3. In use, this invention, by setting up a locking tooth, a spring, and a half-tooth movable wheel, allows the locking tooth to be pushed when the angle of the movable arm needs to be adjusted. This causes the locking tooth to drive the movable block to compress the spring, while simultaneously disengaging the locking tooth from the half-tooth movable wheel and deflecting the movable arm. This causes the movable arm to drive the half-tooth movable wheel to deflect. After the half-tooth movable wheel deflects to the appropriate angle, the locking tooth is released, allowing it to reset under the elastic force of the spring and re-engage with the half-tooth movable wheel, thus achieving the positioning of the movable arm.

[0018] 4. When using this invention, by providing a round hole, a fixing bolt, and a rectangular groove, when connecting the spinal nail and the movable arm, the slot on the movable arm can be aligned with the spinal nail, so that the head of the spinal nail is embedded in the slot. Then, the fixing bolt is threaded into the round hole, and the end of the fixing bolt is threaded into the threaded groove at the top of the spinal nail, ensuring the connection strength between the spinal nail and the movable arm, and further ensuring the stability of the subsequent spinal expansion and correction process for the patient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the present invention from one angle;

[0020] Figure 2 This is a schematic diagram of the external structure of the present invention from another angle;

[0021] Figure 3 This is a schematic diagram of the structure of the housing of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the housing of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the gears, racks, and other components of the present invention;

[0024] Figure 6 This is an enlarged view of the movable arm and its partial structure of the present invention;

[0025] Figure 7 This is a structural diagram of the movable arm, spinal nail, and other components of the present invention.

[0026] The following are the labeling elements in the diagram: 1. Housing; 2. Side frame; 3. Threaded hole; 4. Movable sleeve; 5. Plum blossom bolt; 6. Pad; 7. Handwheel; 8. Screw; 9. Pressure plate; 10. Limiting plate; 11. Power supply box; 12. Controller; 13. Stepper motor; 14. Rotating rod; 15. Gear; 16. Rack; 17. Connecting plate; 18. Through groove; 19. Slider; 20. Slide groove; 21. Movable arm; 22. Slot; 23. Spine nail; 24. Threaded groove; 25. Round hole; 26. Fixing bolt; 27. Side groove; 28. Rectangular groove; 29. ​​Spring; 30. Movable block; 31. Locking tooth; 32. Half-tooth movable wheel. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-7This invention provides a technical solution: a spinal deformity assistive opening and correction device, including a housing 1. Mounting components are provided on both the left and right sides of the housing 1, using these components to fix the housing 1 and other components to the operating table. A stepper motor 13 is installed at the center of the top of the housing 1, and a rotating rod 14 is fixedly connected to the bottom of the stepper motor 13. A gear 15 is provided inside the housing 1. The bottom end of the rotating rod 14 passes through the housing 1 and the gear 15, and is rotatably connected to the housing 1. Two racks 16 mesh on the outer side of the gear 15. A connecting plate 17 is fixedly connected to each rack 16. Through slots 18 are opened on both the front and rear sides of the housing 1. The side of the connecting plate 17 away from the rack 16 passes through the through slot 18 and is slidably connected to the inner wall of the through slot 18. A movable arm 21 is provided on the outer side of the connecting plate 17. A positioning component is provided between the movable arm 21 and the connecting plate 17. The positioning component is used to realize the positioning between the movable arm 21 and the connecting plate 17, ensuring that the movable arm 21 can stably complete the subsequent work after adjustment. A spinal nail 23 is installed on the movable arm 21.

[0029] Please see Figure 1 and Figure 2 The installation assembly includes four side frames 2, which are fixedly connected to the left and right sides of the housing 1, with two side frames 2 on the same side arranged front and back. A movable sleeve 4 is movably installed on the outside of the side frame 2. A pad 6 is fixedly connected to the bottom of the movable sleeve 4. Several screws 8 are threadedly connected to the pad 6. A handwheel 7 is fixedly installed at the bottom of each screw 8, and a pressure plate 9 is fixedly installed at the top of each screw 8. A limit plate 10 is provided on the top of the pressure plates 9. The limit plate 10 is fixedly connected to the side wall of the movable sleeve 4. By placing the limit plate 10 and the pad 6 at the top and bottom of the operating table, respectively, and using the threaded connection between the screws 8 and the pad 6 to push up the pressure plate 9, the movable sleeve 4, side frames 2, and other components are fixed to the operating table, thus achieving a fixed installation of the entire device with the operating table and improving the stability of the entire device during subsequent operation.

[0030] Please see Figure 4 and Figure 6The positioning component includes a semi-toothed movable wheel 32, which is fixedly connected to the side wall of the movable arm 21. A side groove 27 is provided at the bottom edge of the connecting plate 17. The semi-toothed movable wheel 32 is rotatably connected to the top of the inner wall of the side groove 27, and a locking tooth 31 is engaged on the outer side of the semi-toothed movable wheel 32. A movable block 30 is fixedly connected to the outer side of the locking tooth 31. A rectangular groove 28 is provided on the inner wall of the side groove 27. The side of the movable block 30 away from the locking tooth 31 extends into the inner cavity of the rectangular groove 28, and a spring 29 is fixedly connected between the movable block 30 and the inner wall of the rectangular groove 28. When it is necessary to deflect the movable arm 21, the locking tooth 31 can be moved to disengage from the semi-toothed movable wheel 32, disengaging the locking tooth 31 from the semi-toothed movable wheel 32, so that the semi-toothed movable wheel 32 is in a movable state. At this time, the movable arm 21 can be rotated clockwise and counterclockwise to adjust the position. The locking tooth 31 can then be used to achieve positioning, making the operation convenient.

[0031] Please see Figure 1 and Figure 2 The side frame 2 and the adjacent movable sleeve 4 are provided with several threaded holes 3 on their outer walls. Two plum blossom bolts 5 are threadedly connected to the movable sleeve 4. One end of the plum blossom bolt 5 is threadedly connected to the inner cavity of the corresponding threaded hole 3 on the side frame 2. The cooperation between the plum blossom bolt 5 and the threaded hole 3 is used to fix the side frame 2 and the movable sleeve 4, so that the movable sleeve 4 can slide on the outside of the side frame 2 to complete the adjustment of the distance between the pad plate 6 and other components and the bottom of the box 1. It is suitable for various actual situations and improves the applicability of the device.

[0032] Please see Figure 6 and Figure 7 The bottom of the movable arm 21 is provided with a slot 22, and the top of the spinal nail 23 is embedded in the inner cavity of the slot 22. By utilizing the regular hexagonal shape of the slot 22 and the regular hexagonal shape of the head of the spinal nail 23, it can be ensured that there will be no shaking after the spinal nail 23 is embedded in the slot 22, thus improving safety performance.

[0033] Please see Figure 6 and Figure 7 The movable arm 21 has a round hole 25 at the top, and a fixing bolt 26 is threaded to the bottom of the inner wall of the round hole 25. The spinal nail 23 has a threaded groove 24 at the top, and the bottom end of the fixing bolt 26 is threaded to the inner cavity of the threaded groove 24. By connecting the fixing bolt 26 to the top of the spinal nail 23, the spinal nail 23 and the movable arm 21 are fixed, which further enables the movable arm 21 to stably push the spinal nail 23 to complete the opening and correction of the patient's spine.

[0034] Please see Figure 4 and Figure 5A slider 19 is fixedly connected to the inner wall of the through groove 18, and a slide groove 20 is provided on the outer wall of the connecting plate 17. The slider 19 is slidably connected to the inner cavity of the slide groove 20. By using the cooperation of the slider 19 and the slide groove 20, the movement trajectory of the connecting plate 17 is limited, ensuring that it will not derail during the movement.

[0035] Please see Figure 1 and Figure 3 A power supply box 11 is installed on the top of the housing 1 near the front, and a controller 12 is installed on the top of the housing 1 near the rear. The stepper motor 13 is powered by the power supply box 11, so it does not need to be plugged into a power source. The controller 12 is used to control the operation of the stepper motor 13.

[0036] Working principle: In use, multiple pads 6 are first placed at the bottom of the operating table, and the limiting plate 10 is placed at the top of the operating table. Multiple handwheels 7 are then rotated sequentially, causing the handwheels 7 to drive the screw 8 to rotate. The screw 8 drives the pressure plate 9 to move upwards. The upward movement of the pressure plate 9, in conjunction with the limiting plate 10, secures the movable sleeve 4, side frame 2, and other components to the operating table, further securing the entire device to the operating table. Next, the patient is positioned prone on the operating table, and the location of the spinal nail 23 inserted into the patient's spine is determined. Then, based on the position of the spinal nail 23, the movable arm 21 is adjusted... Adjust the position so that the slot 22 on the movable arm 21 is aligned with the head of the spinal nail 23. Then, push the locking tooth 31, causing it to compress the spring 29 via the movable block 30. Simultaneously, the locking tooth 31 disengages from the half-tooth movable wheel 32. The movable arm 21 can then be directly deflected, causing it to deflect the half-tooth movable wheel 32. After the movable arm 21 has deflected to the appropriate angle, release the locking tooth 31, allowing it to reset under the elastic force of the spring 29 and re-engage with the half-tooth movable wheel 32, thus positioning the movable arm 21. The operation is convenient. Next, remove the multiple plum blossom bolts 5. Simultaneously, multiple side frames 2 move, allowing them to collectively lower the housing 1. The housing 1 then lowers the two outer movable arms 21. After the spinal nail 23 is embedded in the slot 22 on the movable arm 21, it is fixed using a plum blossom bolt 5. At the same time, the fixing bolt 26 is threaded into the round hole 25, and the end of the fixing bolt 26 is threaded into the threaded groove 24 on the top of the spinal nail 23. This ensures the connection strength between the spinal nail 23 and the movable arm 21, further guaranteeing the stability of the subsequent spinal expansion and correction process. At this point, the power supply box 11 can be used to power and drive the steps. The stepper motor 13 drives the rotating rod 14 to rotate, which in turn drives the gear 15 to rotate. The gear 15 drives the two outer racks 16 to move in opposite directions. The two racks 16 drive the corresponding connecting plates 17 to move, and the connecting plates 17 drive the spinal nails 23 on the corresponding movable arms 21 to move horizontally. During the movement of the spinal nails 23, the patient's spine is opened and corrected. After the spinal nails 23 have moved to the appropriate position, the stepper motor 13 can be turned off. The stepper motor 13 has a self-locking function, which can lock the position of the spinal nails 23, resulting in high stability and high safety performance.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Auxiliary opening and orthopedic device for human spinal deformities, comprising a box (1), characterized in that: The box (1) is provided with mounting assemblies on both sides, and a stepping motor (13) is installed at the center of the top of the box (1), the bottom of the stepping motor (13) is fixedly connected with a rotating rod (14), a gear (15) is arranged in the inner cavity of the box (1), the bottom end of the rotating rod (14) penetrates through the box (1) and is rotatably connected with the gear (15), the outer side of the gear (15) is engaged with two racks (16), the two racks (16) are fixedly connected with connecting plates (17), the front and rear sides of the box (1) are both provided with through grooves (18), one side of the connecting plate (17) away from the rack (16) penetrates through the through groove (18) and is slidably connected with the inner wall of the through groove (18), and the outer side of the connecting plate (17) is provided with a movable arm (21), a positioning assembly is arranged between the movable arm (21) and the connecting plate (17), and a spinal screw (23) is installed on the movable arm (21). The mounting assembly comprises four side frames (2), the four side frames (2) are fixedly connected on both sides of the box (1), and the two side frames (2) on the same side are arranged in front and back, the outer side of the side frame (2) is sleeved with a movable sleeve (4), the bottom of the movable sleeve (4) is fixedly connected with a pad (6), a plurality of screw rods (8) are threadedly connected on the pad (6), the bottom end of each screw rod (8) is fixedly installed with a hand wheel (7), and the top end of each screw rod (8) is fixedly installed with a pressing piece (9), a plurality of pressing pieces (9) are provided with a limiting plate (10) at the top, and the limiting plate (10) is fixedly connected with the side wall of the movable sleeve (4). The positioning assembly comprises a half-tooth movable wheel (32), the half-tooth movable wheel (32) is fixedly connected with the side wall of the movable arm (21), a side groove (27) is formed at the bottom edge of the connecting plate (17), the half-tooth movable wheel (32) is rotatably connected to the top of the inner wall of the side groove (27), and the outer side of the half-tooth movable wheel (32) is engaged with a clamping tooth (31), the clamping tooth (31) is fixedly connected with a movable block (30), a rectangular groove (28) is formed in the inner wall of the side groove (27), and the side of the movable block (30) away from the clamping tooth (31) extends into the inner cavity of the rectangular groove (28), and the movable block (30) and the inner wall of the rectangular groove (28) are fixedly connected with a spring (29).

2. The auxiliary distraction orthotic device for human spinal deformities as claimed in claim 1 wherein: A plurality of threaded holes (3) are formed in the outer wall of the side frame (2) and the adjacent movable sleeve (4), and two plum blossom bolts (5) are threadedly connected on the movable sleeve (4).

3. The auxiliary distraction orthotic device for human spinal deformities as claimed in claim 1 wherein: A clamping groove (22) is formed in the bottom of the movable arm (21), and the top of the spinal screw (23) is embedded in the inner cavity of the clamping groove (22).

4. The auxiliary distraction orthotic device for human spinal deformities as claimed in claim 3 wherein: A circular hole (25) is formed in the top of the movable arm (21), a fixing bolt (26) is threadedly connected to the bottom of the inner wall of the circular hole (25), a threaded groove (24) is formed in the top of the spinal screw (23), and the bottom end of the fixing bolt (26) is threadedly connected in the inner cavity of the threaded groove (24).

5. The auxiliary distraction orthotic device for human spinal deformities as claimed in claim 1 wherein: A sliding block (19) is fixedly connected to the inner wall of the through groove (18), and a sliding groove (20) is formed in the outer wall of the connecting plate (17), with the sliding block (19) being slidingly connected in the inner cavity of the sliding groove (20).

6. The human spinal deformity assisted distraction orthopedic device of claim 1, wherein: A power supply box (11) is mounted on the top of the box body (1) near the front side, and a controller (12) is mounted on the top of the box body (1) near the rear side.

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