Auxiliary distraction orthopedic device for human spinal deformity

Abstract

The invention discloses an auxiliary distraction orthopedic device for human spinal deformity, and relates to the technical field of medical instruments.The auxiliary distraction orthopedic device comprises a box body, the left side and the right side of the box body are jointly provided with an installation assembly, and a stepping motor is installed in the center of the top of the box body. The power box can be used for supplying power to drive the stepping motor, so that the stepping motor drives the rotating rod to rotate, the rotating rod drives the gear to rotate, the gear drives the two racks on the outer side to move oppositely, the two racks drive the corresponding connecting plates to move respectively, and the connecting plates drive the spine nails on the corresponding movable arms to move horizontally. The spine of a patient can be distracted and corrected, the stepping motor can be turned off after the spine nail moves to a proper position, the stepping motor has a self-locking function, the position of the spine nail can be locked, stability is high, and safety performance is high.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically to a human spinal deformity auxiliary stretching and orthopedic device. Background Technique

[0002] When the human spine is deformed due to reasons such as fractures and lesions, the common method is to install a spinal fixator at the deformed part of the spine through surgery for orthopedic treatment and support of the spine, helping the spine to recover its function or delaying the deterioration of the condition.

[0003] The human spinal deformity auxiliary stretching and orthopedic device with the patent number: CN202120255253.9, by setting a connecting component, a tightening screw component, a support rod component, a bending adjustment component and a spinal nail fixing rod, can press the connecting component towards the spine when the spine is stretched, and during the stretching process, the hand pressing the connecting component towards the spine can be released at any time. In this way, it is safer for dynamically monitoring nerve function during the process of stretching the spine during surgery, and problems can be found in the first time when dynamically monitoring nerve function to reset the spine to avoid physical harm. However, in actual use, there are still some defects. For example, during the stretching and orthopedic process, it uses the manual force of the medical staff's palm to push the whole device to achieve the stretching and orthopedic treatment of the patient's spine. However, the manual force will make the stretching and orthopedic treatment of the patient's spine affected by the medical staff's own state, which is prone to potential safety hazards and insufficient safety performance.

[0004] Therefore, the present application proposes a human spinal deformity auxiliary stretching and orthopedic device here. Summary of the Invention

[0005] The technical problem solved by the present invention is to overcome the defects of insufficient safety performance and single structure in the prior art, and provide a human spinal deformity auxiliary stretching and orthopedic device.

[0006] To achieve the above object, the present invention provides the following technical solution: A human spinal deformity auxiliary stretching and orthopedic device, including a box body. An installation component is jointly 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 bottom of the stepping motor is fixedly connected to a rotating rod. 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 connected to the gear, and is rotatably connected to the box body. Two racks are meshed on the outside of the gear. Connecting plates are fixedly connected to both of the two racks. Through grooves are opened on the front and rear sides of the box body. The side of the connecting plate away from the rack penetrates the through groove and is slidably connected to the inner wall of the through groove. And a movable arm is arranged on the outside of the connecting plate. A positioning component is arranged between the movable arm and the connecting plate, and a spinal nail is installed on the movable arm.

[0007] Preferably, the installation component includes four side frames, the four side frames are respectively fixedly connected to the left and right sides of the box body, and the two side frames on the same side are arranged front and back. An activity sleeve is sleeved and movably installed on the outer side of the side frame. A backing plate is fixedly connected to the bottom of the activity sleeve. A plurality of screw rods are threadedly connected to the backing plate. Handwheels are fixedly installed at the bottom ends of the plurality of screw rods, and pressing pieces are fixedly installed at the top ends of the plurality of screw rods. A limiting plate is jointly arranged on the tops of the plurality of pressing pieces, and the limiting plate is fixedly connected to the side wall of the activity sleeve.

[0008] Preferably, the positioning component includes a semi-toothed movable wheel, the semi-toothed movable wheel is fixedly connected to the side wall of the movable arm, a side groove is opened 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, and a toothed lock is engaged with the outer side of the semi-toothed movable wheel. An activity block is fixedly connected to the outer side of the toothed lock. A rectangular groove is opened on the inner wall of the side groove. One side of the activity block away from the toothed lock extends into the inner cavity of the rectangular groove, and a spring is fixedly connected between the activity block and the inner wall of the rectangular groove.

[0009] Preferably, a plurality of threaded holes are opened on the outer walls of the side frame and the adjacent activity sleeve. Two plum blossom bolts are threadedly connected to the activity sleeve, and one end of each plum blossom bolt is threadedly connected to the inner cavity of the corresponding threaded hole on the side frame.

[0010] Preferably, a clamping groove is opened at the bottom of the movable arm, and the top of the spinal nail is embedded in the inner cavity of the clamping groove.

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

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

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

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

[0015] 1. When the present invention is in use, by providing a stepper motor, a gear, and a rack, when the spine of a patient is being expanded and orthopedically corrected, the power supply box can be used to supply power to drive the stepper motor, causing the stepper motor to drive the rotating rod to rotate. The rotating rod drives the gear to rotate, and the gear drives the two outer racks to move in opposite directions. The two racks respectively drive the corresponding connecting plates to move, and the connecting plates drive the spinal nails on the corresponding movable arms to move horizontally. During the movement of the spinal nails, the expansion and orthopedic correction of the patient's spine are achieved. And after the spinal nails move to the appropriate positions, the stepper motor can be turned off, and the stepper motor has a self-locking function, which can lock the positions of the spinal nails, with high stability and high safety performance.

[0016] 2. When the present invention is in use, by providing a pressing piece, a limiting plate, and a handwheel, when installing and using the device, multiple cushion plates can be placed at the bottom of the operating table, and the limiting plate can be placed at the top of the operating table. Then, rotate the multiple handwheels in sequence, causing the handwheels to drive the screw rods to rotate, and the screw rods to drive the pressing piece to move upward. By using the upward movement of the pressing piece in cooperation with the limiting plate, the fixation between components such as the movable sleeve and the side frame and the operating table is achieved, further realizing the fixation between the overall device and the operating table. Subsequently, if the heights of components such as the box body and the movable arm need to be adjusted, the multiple plum blossom bolts can be removed, and the multiple side frames can be moved synchronously, enabling the multiple side frames to jointly drive the box body to adjust its height. After adjustment, it can be fixed with the plum blossom bolts, and the operation is convenient.

[0017] 3. When the present invention is in use, by providing a toothed card, a spring, and a semi-toothed movable wheel, when the angle of the movable arm needs to be adjusted, the toothed card can be pushed, causing the toothed card to drive the movable block to compress the spring. At the same time, the toothed card disengages from the engagement with the semi-toothed movable wheel, and the movable arm is deflected, causing the movable arm to drive the semi-toothed movable wheel to deflect. After the semi-toothed movable wheel deflects to the appropriate angle, release the toothed card, causing the toothed card to reset under the elastic force of the spring and engage with the semi-toothed movable wheel again to achieve the positioning of the movable arm.

[0018] 4. When the present invention is in use, by providing a round hole, a fixing bolt, and a rectangular groove, when docking the spinal nail and the movable arm, the slot on the movable arm can be aligned with the spinal nail, causing the head of the spinal nail to be embedded inside the slot. Then, thread the fixing bolt into the round hole, and thread the end of the fixing bolt into the threaded groove on the top of the spinal nail to ensure the connection strength between the spinal nail and the movable arm, further ensuring the stability of the subsequent process of expanding and orthopedically correcting the patient's spine. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 Structural schematic diagram of the box body of the present invention;

[0022] Figure 4 Internal structural schematic diagram of the box body of the present invention;

[0023] Figure 5 Structural schematic diagram of components such as gears and racks of the present invention;

[0024] Figure 6 Amplified view of the movable arm and its partial structure of the present invention;

[0025] Figure 7 Structural schematic diagram of components such as the movable arm and spinal nail of the present invention.

[0026] Reference numerals in the figure: 1, box body; 2, side frame; 3, threaded hole; 4, movable sleeve; 5, plum blossom bolt; 6, backing plate; 7, handwheel; 8, screw rod; 9, pressing piece; 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, chute; 21, movable arm; 22, card slot; 23, spinal nail; 24, threaded groove; 25, round hole; 26, fixing bolt; 27, side groove; 28, rectangular groove; 29, spring; 30, movable block; 31, tooth; 32, semi-toothed movable wheel. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-7The present invention provides a technical solution: a human spinal deformity auxiliary opening and correction device, comprising a box body 1, a mounting assembly is provided on both sides of the box body 1, and the mounting assembly is used to fix the box body 1 and other components to the operating table, and a stepper motor 13 is installed at the top center of the box body 1, a rotating rod 14 is fixedly connected to the bottom of the stepper motor 13, a gear 15 is provided in the inner cavity of the box body 1, the bottom end of the rotating rod 14 passes through the box body 1 and the gear 15, and is rotatably connected to the box body 1, and two racks 16 are meshed on the outer side of the gear 15, and the two A connecting plate 17 is fixedly connected to the rack 16, and through grooves 18 are provided on the front and rear sides of the box body 1. The side of the connecting plate 17 away from the rack 16 passes through the through groove 18 and is slidably connected to the inner wall of the through groove 18. A movable arm 21 is provided on the outer side of the connecting plate 17, and 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 subsequent work after adjustment, and a spinal nail 23 is installed on the movable arm 21.

[0029] See also Figure 1 and Figure 2 The mounting assembly includes four side frames 2, which are fixedly connected to the left and right sides of the box body 1 respectively, and the two side frames 2 on the same side are arranged front and back, and a movable sleeve 4 is movably installed on the outer side of the side frame 2, and a pad 6 is fixedly connected to the bottom of the movable sleeve 4, and a plurality of screws 8 are threadedly connected to the pad 6, and hand wheels 7 are fixedly installed at the bottom ends of the plurality of screws 8, and pressure plates 9 are fixedly installed at the tops of the plurality of screws 8, and a limiting plate 10 is commonly arranged on the tops of the plurality of pressure plates 9, and the limiting plate 10 is fixedly connected to the side wall of the movable sleeve 4. By placing the limiting plate 10 and the pad 6 on the top and bottom of the operating bed respectively, and using the threaded connection between the screw 8 and the pad 6 to push up the pressure plate 9, the fixing between the movable sleeve 4, the side frame 2 and other components and the operating bed is realized, the fixed installation between the overall device and the operating bed is realized, and the stability performance of the overall device during subsequent operation is improved.

[0030] See also Figure 4 and Figure 6, the 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 formed 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 toothed lock 31 is engaged with the outside of the semi-toothed movable wheel 32. An movable block 30 is fixedly connected to the outside of the toothed lock 31. A rectangular groove 28 is formed on the inner wall of the side groove 27. One side of the movable block 30 away from the toothed lock 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 toothed lock 31 can be toggled to disengage from the semi-toothed movable wheel 32, and the engagement between the toothed lock 31 and the semi-toothed movable wheel 32 is disengaged, 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, and then the toothed lock 31 is used for positioning, and the operation is convenient.

[0031] Please refer to Figure 1 and Figure 2 , a plurality of threaded holes 3 are formed on the outer walls of the side frame 2 and the adjacent movable sleeve 4. Two plum bolts 5 are threadedly connected to the movable sleeve 4. One end of the plum 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 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 outside the side frame 2 to complete the adjustment of the distance between the bottom plate 6 and other components and the bottom of the box body 1, which is applicable to various actual situations and improves the applicability of the device.

[0032] Please refer to Figure 6 and Figure 7 , a clamping groove 22 is formed on the bottom of the movable arm 21. The top of the spinal nail 23 is embedded in the inner cavity of the clamping groove 22. By using the regular hexagon setting of the clamping groove 22 and the regular hexagon setting of the head of the spinal nail 23, it can be ensured that there will be no shaking problem after the spinal nail 23 is embedded in the clamping groove 22, and the safety performance is improved.

[0033] Please refer to Figure 6 and Figure 7 , a round hole 25 is formed at the top of the movable arm 21. A fixing bolt 26 is threadedly connected to the bottom of the inner wall of the round hole 25. A threaded groove 24 is formed at the top of the spinal nail 23. The bottom end of the fixing bolt 26 is threadedly connected to the inner cavity of the threaded groove 24. By threading the fixing bolt 26 onto the top of the spinal nail 23, the spinal nail 23 and the movable arm 21 are in a fixed state, and further the movable arm 21 can stably push the spinal nail 23 later to complete the expansion and orthosis of the patient's spine.

[0034] Please refer to Figure 4 and Figure 5, a slider 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. The slider 19 is slidably connected to the inner cavity of the sliding groove 20. By using the cooperation of the slider 19 and the sliding groove 20, the movement track of the connecting plate 17 is limited to ensure that it will not derail during the movement process.

[0035] Please refer to Figure 1 and Figure 3 , a power supply box 11 is installed near the front side of the top of the box body 1, and a controller 12 is installed near the rear side of the top of the box body 1. The power supply box 11 supplies power to the stepping motor 13, and there is no need to plug in the power supply for use. The setting of the controller 12 is used to control the operation of the stepping motor 13.

[0036] Working principle: When the present application is used, firstly, a plurality of pads 6 can be placed at the bottom of the operating bed, a limiting plate 10 can be placed at the top of the operating bed, and a plurality of hand wheels 7 can be rotated in sequence, so that the hand wheels 7 drive the screw rods 8 to rotate, and the screw rods 8 drive the pressing plates 9 to move upward, and the upward movement of the pressing plates 9 cooperates with the limiting plates 10 to achieve the fixation between the movable sleeve 4, the side frame 2 and other components and the operating bed, and further achieve the fixation between the overall device and the operating bed, then let the patient lie on the operating bed in a prone position, and determine the position of the spinal nails 23 inserted into the patient's spine, and then adjust the movable arm 21 according to the position of the spinal nails 23. The position is adjusted, and the slot 22 on the movable arm 21 is aligned with the head of the spinal nail 23. At this time, the latch tooth 31 can be pushed, so that the latch tooth 31 drives the movable block 30 to compress the spring 29. At the same time, the latch tooth 31 is disengaged from the meshing between the semi-toothed movable wheel 32. At this time, the movable arm 21 can be directly deflected, so that the movable arm 21 drives the semi-toothed movable wheel 32 to deflect. After the movable arm 21 is deflected to a suitable angle, the latch tooth 31 is released, so that the latch tooth 31 is reset under the elastic force of the spring 29 and meshes with the semi-toothed movable wheel 32 again, so as to realize the positioning of the movable arm 21. The operation is convenient, and then the multiple plum blossom bolts 5 are removed. , and synchronously move the multiple side frames 2, so that the multiple side frames 2 can jointly drive the box body 1 to move downward, and the box body 1 drives the two outer movable arms 21 to move downward. After the spinal nail 23 is embedded in the slot 22 on the movable arm 21, the plum blossom bolt 5 is used to fix it, and at the same time, the fixing bolt 26 is threadedly connected to the inside of the round hole 25, and the end of the fixing bolt 26 is threadedly connected to the inside of the thread groove 24 at the top of the spinal nail 23, ensuring the connection strength between the spinal nail 23 and the movable arm 21, further ensuring the stability of the subsequent process of expanding and correcting the patient's spine. At this time, the power box 11 can be used to power the driving step The stepper motor 13 is driven into the motor 13, so that the stepper motor 13 drives the rotating rod 14 to rotate, the rotating rod 14 drives the gear 15 to rotate, the gear 15 drives the two outer racks 16 to move in the opposite direction, the two racks 16 respectively 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 stretched and corrected. After the spinal nails 23 are moved to a suitable 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, and has high stability and high safety performance.

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

Claims

1. A device for assisting the expansion and correction of human spinal deformity, comprising a housing (1), characterized in that: The left and right sides of the box (1) are provided with mounting components, and a stepper motor (13) is installed at the center of the top of the box (1). The bottom of the stepper motor (13) is fixedly connected to a rotating rod (14). The inner cavity of the box (1) is provided with a gear (15). The bottom end of the rotating rod (14) passes through the box (1) and the gear (15) and is rotatably connected to the box (1). Two racks (16) are meshed on the outer side of the gear (15). A connecting plate (17) is fixedly connected to the two racks (16). Through grooves (18) are provided on the front and rear sides of the box (1). The side of the connecting plate (17) away from the rack (16) passes through the through groove (18) and is slidably connected to the inner wall of the through groove (18). A movable arm (21) is provided on the outer side of the connecting plate (17). A positioning assembly is provided between the movable arm (21) and the connecting plate (17), and a spinal nail (23) is installed on the movable arm (21).

2. The human spinal deformity auxiliary distraction and correction device according to claim 1, characterized in that: The installation assembly comprises four side frames (2), the four side frames (2) are respectively fixedly connected to the left and right sides of the box body (1), and the two side frames (2) on the same side are arranged front and back, the outer side of the side frame (2) is sleeved with a movable sleeve (4) movably installed, the bottom of the movable sleeve (4) is fixedly connected with a pad (6), the pad (6) is threadedly connected with a plurality of screw rods (8), the bottom ends of the plurality of screw rods (8) are fixedly installed with a hand wheel (7), and the top ends of the plurality of screw rods (8) are fixedly installed with a pressure plate (9), and the tops of the plurality of pressure plates (9) are jointly provided with a limit plate (10), and the limit plate (10) is fixedly connected to the side wall of the movable sleeve (4).

3. The human spinal deformity auxiliary distraction and correction device according to claim 1, characterized in that: The positioning assembly comprises a semi-toothed movable wheel (32), the semi-toothed movable wheel (32) 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 latching tooth (31) is meshed on the outer side of the semi-toothed movable wheel (32), a movable block (30) is fixedly connected to the outer side of the latching tooth (31), a rectangular groove (28) is provided on the inner wall of the side groove (27), a side of the movable block (30) away from the latching tooth (31) extends to 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).

4. The human spinal deformity auxiliary distraction and correction device according to claim 2, characterized in that: A plurality of threaded holes (3) are provided on the outer walls of the side frame (2) and the adjacent movable sleeve (4); 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).

5. The human spinal deformity auxiliary distraction and correction device according to claim 1, characterized in that: A slot (22) is provided on the bottom of the movable arm (21), and the top of the spinal nail (23) is embedded in the inner cavity of the slot (22).

6. The human spinal deformity auxiliary distraction and correction device according to claim 5, characterized in that: A circular hole (25) is formed at 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 thread groove (24) is formed at the top of the spinal nail (23), and the bottom end of the fixing bolt (26) is threadedly connected to the inner cavity of the thread groove (24).

7. The human spinal deformity auxiliary distraction and correction device according to claim 1, characterized in that: A sliding block (19) is fixedly connected to the inner wall of the through groove (18), a sliding groove (20) is provided on the outer wall of the connecting plate (17), and the sliding block (19) is slidably connected to the inner cavity of the sliding groove (20).

8. The human spinal deformity auxiliary distraction and correction device according to claim 1, characterized in that: A power supply box (11) is installed at the top of the box body (1) near the front side, and a controller (12) is installed at the top of the box body (1) near the rear side.

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