Orthopedic screw placement device for improving stability of pedicle screw

Abstract

The invention belongs to the technical field of orthopedic surgery, and particularly relates to an orthopedic screw placement device for improving the stability of a pedicle screw, the orthopedic screw placement device comprises a fixing assembly and a separable shock absorption assembly mounted on the fixing assembly, and the fixing assembly and the shock absorption assembly are connected with a positioning assembly and a propelling assembly respectively; the positioning assembly comprises a positioning ring and a fixing ring, the angle adjusting assembly is rotationally installed in the fixing ring and comprises a ball head and a guide groove, the guide groove is formed in the ball head, the connecting plate is fixedly installed on the ball head, the propelling assembly is installed on the connecting plate and comprises a connector, the connector is connected with the implanting nail, and the implanting nail penetrates through the guide groove. During use, the positions of the positioning assembly and the propelling assembly are adjusted through the fixing assembly and the shock absorption assembly, so that the positioning ring presses the skin of an affected part of a patient, the positioning ring can position the affected part of the patient during an operation, the affected part is not prone to being covered by blood, and the positioning ring can slow down blood loss of the affected part and accelerate blood coagulation by pressing the skin.

Description

Technical Field

[0001] The invention belongs to the technical field of orthopedic surgery, and in particular relates to an orthopedic screw placement device for improving the stability of a pedicle screw. Background Art

[0002] Orthopedic implant surgery, such as pedicle screw placement, is a very common surgery. Pedicle screws play an important role in the treatment of spinal trauma reduction and deformity correction. The key to the success of pedicle screw internal fixation surgery lies in the position and angle of the pedicle screw placement, ensuring that the pedicle screw is placed in the pedicle without damaging the neural vertebral body.

[0003] An orthopedic nail placement device is an instrument used to place nails into bones during fracture treatment. The prior art nail placement devices have the following problems. First, before performing an orthopedic operation, the doctor needs to mark the surgical site of the patient before performing the operation. However, when the doctor uses a scalpel to cut the skin of the patient's affected area, blood will flow out of the affected area and cover the mark, which is likely to cause the doctor to misjudge the position and angle of the nail placement. Second, since the implant nail needs to be driven by a motor to be implanted into the bone, such as the reciprocating feed unit, orthopedic nail placement mechanism, device and orthopedic nail placement method with publication number CN112244985A, the motor in the nail placement device will vibrate when working, and the vibration will be transmitted to the implant nail, affecting the implant nail placement, which can easily cause the implant nail placement path to deviate and damage the neural vertebral body. Summary of the invention

[0004] The purpose of the present invention is to provide an orthopedic screw placement device for improving the stability of pedicle screws in view of the deficiencies of the prior art, so as to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions: an orthopedic nail placement device for improving the stability of pedicle nails, which includes a fixing component and a detachable shock-absorbing component installed on the fixing component, the fixing component and the shock-absorbing component are respectively connected to a positioning component and a propulsion component, the positioning component includes a positioning ring and a fixing ring, the positioning ring is attached to the patient's affected part, the positioning ring is connected to the fixing ring through a fixing rod, an angle adjustment component is rotatably installed in the fixing ring, the angle adjustment component includes a ball head and a guide groove, a guide groove is provided in the ball head, a connecting plate is fixedly installed on the ball head, a propulsion component is installed on the connecting plate, the propulsion component includes a connecting head, the connecting head is connected to the implant nail, and the implant nail passes through the guide groove.

[0006] As a further optimization or improvement of this solution, a ball sleeve is installed in the fixed ring, and the ball sleeve is movably connected to the ball head.

[0007] As a further optimization or improvement of this solution, the propulsion assembly includes an electric motor, the output end of the motor is connected to a threaded rod, the threaded rod cooperates with the connecting plate thread, a connecting head is installed at the end of the motor away from the threaded rod, and the angle adjustment assembly also includes a guide groove, the guide groove is connected to the guide groove, and the guide groove cooperates with the connecting head.

[0008] As a further optimization or improvement of this solution, a push groove is opened in the ball head, and the push groove is connected to the guide groove. The propulsion assembly also includes a push rod, one end of the push rod is fixedly connected to the motor, and the other end of the push rod is rotatably connected to the connecting rod. A sliding sleeve is rotatably installed on the connecting rod, and an adjusting pressure roller is connected to the sliding sleeve, which clamps the implant nail.

[0009] As a further optimization or improvement of the present solution, the adjusting pressure roller includes a guide sleeve and a guide column, a slot is opened inside the sliding sleeve, a micro cylinder is installed inside the slot, the output end of the micro cylinder is connected to the guide sleeve, the guide column is slidably installed inside the guide sleeve, the guide columns are connected by a supporting steel roller, a flexible bonding layer is installed on the outside of the supporting steel roller, and a seam filling pad is installed on one end of the guide sleeve close to the supporting steel roller.

[0010] As a further optimization or improvement of the present solution, the fixing assembly includes a fixing head and a main rod one rotatably mounted on the fixing head, the main rod one is connected to a support rod one via a rotating shaft, the support rod one is connected to a fixing ring via a mounting head, the shock absorbing assembly includes a fixing head and a main rod two rotatably mounted on the fixing head two, the main rod two is connected to a support rod two via a rotating sleeve, and the support rod two is connected to a motor via a clamping head.

[0011] As a further optimization or improvement of this solution, a rod groove is provided on the main rod one, and the main rod two is located in the rod groove, and the rotating sleeves are sleeved with each other.

[0012] As a further optimization or improvement of the present solution, a fixed block is installed on the edge of the rotating sleeve, and the fixed block abuts against the fixed block and the second main rod.

[0013] Beneficial effects of the present invention: (1) When the present invention is in use, the positions of the positioning component and the propulsion component are adjusted by the fixing component and the shock absorbing component, so that the positioning ring presses the skin of the patient's affected area. During surgery, the positioning ring can locate the patient's affected area and is not easily covered by blood. The positioning ring can slow down the blood loss in the affected area by pressing the skin and accelerate blood coagulation.

[0014] (2) In the adjustment mode, the main rod 2 is located in the rod groove, and the rotating sleeve is engaged with the rotating shaft. At this time, rotating the main rod 1 and the support rod 1 can adjust the positioning component and the propulsion component at the same time, so that the doctor can adjust the positioning component and the propulsion component to the accurate position at the same time, simplifying the operation steps and saving operation time; In addition, when the motor is in working state, the motor drives the connecting head and the clamping head to move downward through the threaded cooperation between the threaded rod and the connecting plate, and the downward movement of the clamping head drives the second support rod to rotate along the rotating sleeve. When the second support rod abuts against the fixed block, as the second support rod rotates, the second support rod drives the rotating sleeve to disengage from the rotating shaft. At the same time, the second main rod disengages from the rod groove. At this time, the fixing assembly and the shock absorbing assembly are respectively fixed on the operating table through the first fixing head and the second fixing head. At this time, the fixing assembly fixes the position of the positioning assembly, and the vibration of the motor body is transmitted to the workbench through the shock absorbing assembly, which can effectively avoid the resonance of the positioning assembly driven by the motor. Specifically, as the motor moves downward, the motor drives the implant pin on the connecting head to pass through the guide groove and be placed into the bone. During this process, the motor drives the push rod to move downward synchronously. The downward movement of the push rod drives the connecting rod to rotate, so that the connecting rod drives the sliding sleeve to move relatively. As the sliding sleeve moves relatively, the adjusting roller on the sliding sleeve fits and clamps the implant pin, so that the aftershock transmitted to the implant pin by the motor is eliminated through the adjusting roller, thereby avoiding the deviation of the advancement path of the implant pin and ensuring that the implant pin does not damage the neural vertebral body.

[0015] (3) The present invention drives the micro-cylinder and drives the guide sleeve to move relative to each other, thereby adjusting the relative position between the guide sleeve and the guide column, changing the exposed area of ​​the flexible bonding layer on the outer side of the supporting steel roller, so that larger-sized implant pins can be completely bonded with the flexible bonding layer. As the guide sleeve moves, the seam-filling pad on the guide sleeve is inserted into the gap between the flexible bonding layer and the implant pin, thereby achieving the positioning of the implant pin, improving the stability of the implant pin, and increasing the accuracy of the pin placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the connection structure between the positioning component and the propulsion component.

[0019] Figure 3 This is a cross-sectional view of the angle adjustment component structure.

[0020] Figure 4 This is a schematic diagram of the internal structure of the angle adjustment component.

[0021] Figure 5 Schematic diagram for adjusting the installation position of the pressure roller.

[0022] Figure 6 It is a schematic diagram of the overall structure of the adjusting pressure roller.

[0023] Figure 7 Schematic diagram of the internal structure of the adjusting roller.

[0024] Figure 8This is a schematic diagram of the installation structure of the fixed components and the vibration absorption components.

[0025] Fig. 9 It is a schematic diagram of the rotating sleeve structure.

[0026] Fig.10 Schematic diagram of the rod slot structure.

[0027] The following are marked in the figure: 1. Fixing assembly; 11. Fixing head 1; 12. Main rod 1; 13. Support rod 1; 14. Rod slot; 15. Rotating shaft; 16. Mounting head; 2. Shock-absorbing assembly; 21. Fixing head 2; 22. Main rod 2; 23. Support rod 2; 24. Rotating sleeve; 25. Clamping head; 26. Fixing block; 3. Positioning assembly; 31. Positioning ring; 32. Fixing rod; 33. Fixing ring; 34. Ball sleeve; 4. Angle adjustment Assembly; 41, ball head; 42, guide groove; 43, guide groove; 44, push groove; 5, connecting plate; 6, propulsion assembly; 61, motor; 62, threaded rod; 63, connector; 64, push rod; 65, connecting rod; 66, sliding sleeve; 67, adjusting pressure roller; 670, notch; 671, micro cylinder; 672, guide sleeve; 673, guide column; 674, supporting steel roller; 675, flexible bonding layer; 676, seam pad. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 9 , an orthopedic screw placement device for improving the stability of pedicle screws, comprising a fixing component 1 and a detachable shock-absorbing component 2 installed on the fixing component 1, wherein the fixing component 1 and the shock-absorbing component 2 are respectively connected to a positioning component 3 and a propulsion component 6, wherein the positioning component 3 comprises a positioning ring 31 and a fixing ring 33, wherein the positioning ring 31 is attached to the affected part of the patient, the positioning ring 31 is connected to the fixing ring 33 through a fixing rod 32, and an angle adjustment component 4 is rotatably installed in the fixing ring 33, wherein the angle adjustment component 4 comprises a ball head 41 and a guide groove 43, wherein the guide groove 43 is provided in the ball head 41, a connecting plate 5 is fixedly installed on the ball head 41, and a propulsion component 6 is installed on the connecting plate 5, wherein the propulsion component 6 comprises a connecting head 63, wherein the connecting head 63 is connected to an implanted screw, and the implanted screw passes through the guide groove 43.

[0030] It should be noted that, in the initial state, the rotating sleeve 24 cooperates with the rotating shaft 15, and the main rod 22 is located in the rod groove 14. At this time, moving the main rod 12 and the support rod 1 13 can drive the main rod 22 and the support rod 23 to move synchronously.

[0031] It should be noted that the method of using the present invention is as follows: The first step is to install the implant nail on the connecting head 63, and then fix the fixing head 11 and the fixing head 21 next to the operating table, and drive the main rod 22 and the supporting rod 23 to move synchronously through the main rod 12 and the supporting rod 13, and then adjust the position of the positioning component 3 and the pushing component 6, so that the positioning ring 31 presses the affected skin of the patient; The second step is to rotate the ball head 41 to adjust the insertion angle of the implant screw. At the same time, the position of the pedicle injury is observed using X-ray fluoroscopy, and the insertion path of the implant screw is estimated by the insertion angle of the implant screw. The third step is to start the motor 61, so that the motor 61 drives the threaded rod 62 to rotate, and the motor 61 drives the connector 63 and the implant pin thereon to move downward through the threaded engagement between the connecting plate 5 and the threaded rod 62, so that the implant pin is implanted into the patient's affected part through the guide groove 43; Step 4: As the motor 61 moves downward, the motor 61 drives the support rod 23 to rotate along the rotating sleeve 24. When the support rod 23 rotates to a certain angle, the support rod 23 abuts against the fixed block 26. At this time, the rotating sleeve 24 is separated from the rotating shaft 15. As the motor 61 continues to move downward, the main rod 22 is separated from the rod groove 14. At this time, the shock absorbing component 2 is separated from the fixed component 1. The vibration generated by the motor 61 when working is transmitted to the operating table through the shock absorbing component 2. In the fifth step, as the motor 61 moves downward, the motor 61 drives the push rod 64 to move downward, and at the same time, the push rod 64 drives the sliding sleeve 66 to move relative to each other through the connecting rod 65. At this time, the adjusting roller 67 on the sliding sleeve 66 clamps the implant nail to improve the stability of the implant nail advancement and prevent the implant nail from vibrating and causing its path to deviate.

[0032] It should be noted that when the present invention is in use, the positions of the positioning component 3 and the propulsion component 6 are adjusted through the fixing component 1 and the shock-absorbing component 2, so that the positioning ring 31 presses the affected skin of the patient. During surgery, the positioning ring 31 can locate the affected area of ​​the patient and is not easily covered by blood. The positioning ring 31 can slow down the blood loss in the affected area by pressing the skin and accelerate blood coagulation.

[0033] See also Figure 3-Figure 4 A ball sleeve 34 is installed in the fixing ring 33 , and the ball sleeve 34 is movably connected to the ball head 41 .

[0034] It should be noted that the positioning ring 31 is used to locate the patient's affected area, and then the insertion angle of the implant screw is adjusted by rotating the ball head 41. During this process, it is necessary to cooperate with X-ray fluoroscopy to observe the location of the pedicle injury to ensure that the implant screw does not damage the neural vertebral body.

[0035] When in use, the present invention drives the micro cylinder 671 and drives the guide sleeve 672 to move relatively, thereby adjusting the relative position between the guide sleeve 672 and the guide column 673, changing the exposed area of ​​the flexible bonding layer 675 outside the supporting steel roller 674, so that the implant nail of a larger size can be completely bonded with the flexible bonding layer 675. As the guide sleeve 672 moves, the seam filling pad 676 on the guide sleeve 672 is inserted into the gap between the flexible bonding layer 675 and the implant nail, thereby realizing the positioning of the implant nail, improving the stability of the implant nail, and increasing the accuracy of nail placement; After the implant screw is installed, the fixing head 11 and the fixing head 21 are then fixedly installed next to the operating table, and the main rod 12 and the support rod 1 13 are used to drive the main rod 22 and the support rod 23 to move synchronously, and then the position of the positioning component 3 and the propulsion component 6 is adjusted, so that the positioning ring 31 presses the patient's affected skin; the ball head 41 is rotated to adjust the insertion angle of the implant screw, and at the same time, the position of the pedicle injury is observed using X-ray fluoroscopy, and the insertion path of the implant screw is estimated by the insertion angle of the implant screw.

[0036] Start the motor 61, and through the threaded rod 62 and the threaded cooperation of the connecting plate 5, the motor 61 drives the connecting head 63 and the clamping head 25 to move downward synchronously, and the clamping head 25 moves downward to drive the support rod 23 to rotate along the rotating sleeve 24. When the support rod 23 abuts against the fixed block 26, as the support rod 23 rotates, the support rod 23 drives the rotating sleeve 24 to disengage from the rotating shaft 15. At the same time, the main rod 22 disengages from the rod groove 14. At this time, the fixing assembly 1 and the shock absorbing assembly 2 are respectively fixed on the operating table by the fixing head 1 11 and the fixing head 21. At this time, the fixing assembly 1 fixes the position of the positioning assembly 3, and the vibration of the main body of the motor 61 is transmitted through the shock absorbing assembly 2. The motor 61 is transmitted to the workbench, which can effectively prevent the motor 61 from driving the positioning component 3 to resonate; as the motor 61 moves downward, the motor 61 drives the implant nail on the connecting head 63 to penetrate the guide groove 43 and be inserted into the bone. In this process, the motor 61 drives the push rod 64 to move downward synchronously, and the push rod 64 moves downward to drive the connecting rod 65 to rotate, so that the connecting rod 65 drives the sliding sleeve 66 to move relatively. As the sliding sleeve 66 moves relatively, the adjusting roller 67 on the sliding sleeve 66 fits and clamps the implant nail, so that the aftershock transmitted to the implant nail by the motor 61 is eliminated through the adjusting roller 67, thereby avoiding the deviation of the advancement path of the implant nail and ensuring that the implant nail does not damage the neural vertebral body.

[0037] See also Figure 3-Figure 9 The propulsion assembly 6 includes an electric motor 61, the output end of the electric motor 61 is connected to a threaded rod 62, the threaded rod 62 is threadedly matched with the connecting plate 5, and a connector 63 is installed at one end of the electric motor 61 away from the threaded rod 62. The angle adjustment assembly 4 also includes a guide groove 42, the guide groove 42 is connected to the guide groove 43, and the guide groove 42 is matched with the connector 63.

[0038] Specifically, a push groove 44 is provided in the ball head 41, and the push groove 44 is connected to the guide groove 43. The propulsion assembly 6 also includes a push rod 64, one end of the push rod 64 is fixedly connected to the motor 61, and the other end of the push rod 64 is rotatably connected to the connecting rod 65. A sliding sleeve 66 is rotatably installed on the connecting rod 65, and an adjusting pressure roller 67 is connected to the sliding sleeve 66, and the adjusting pressure roller 67 clamps the implant nail.

[0039] It should be noted that the motor 61 in the present invention will generate vibrations when working, and the vibrations will be transmitted to the positioning assembly 3 and the implant pin. When the vibrations of the motor 61 are transmitted to the positioning ring 31, the positioning ring 31 will cause the patient's incision skin to shake, affecting the insertion of the implant pin; if the vibrations of the motor 61 are transmitted to the implant pin, the insertion path of the implant pin will be offset, which may easily damage the neural vertebral body. The vibrations of the motor 61 are mainly generated by its own operating state. Therefore, when the present invention is actually used, it is necessary to eliminate the influence of the vibrations of the motor 61 on the positioning assembly 3 and the implant pin.

[0040] It should be noted that, in the adjustment mode, the main rod 22 is located in the rod groove 14, and the rotating sleeve 24 is engaged with the rotating shaft 15. At this time, rotating the main rod 12 and the support rod 13 can adjust the positioning assembly 3 and the propulsion assembly 6 at the same time, so that the doctor can adjust the positioning assembly 3 and the propulsion assembly 6 to the accurate position at the same time, simplifying the operation steps and saving operation time; when the motor 61 is in the working state, through the threaded cooperation between the threaded rod 62 and the thread of the connecting plate 5, the motor 61 drives the connecting head 63 and the clamping head 25 to move downward synchronously, and the clamping head 25 moves downward to drive the support rod 23 to rotate along the rotating sleeve 24. When the support rod 23 abuts against the fixed block 26, as the support rod 23 rotates, the support rod 23 drives the rotating sleeve 24 to disengage from the rotating shaft 15. At the same time, the main rod 22 disengages from the rod groove 14. At this time, the fixing assembly 1 and the shock absorbing assembly 2 are connected. The fixing head 11 and the fixing head 21 are respectively fixed on the operating table. At this time, the fixing component 1 fixes the position of the positioning component 3, and the vibration of the main body of the motor 61 is transmitted to the workbench through the shock absorbing component 2, which can effectively prevent the motor 61 from driving the positioning component 3 to resonate; as the motor 61 moves downward, the motor 61 drives the implant nail on the connecting head 63 to pass through the guide groove 43 and be inserted into the bone. In this process, the motor 61 drives the push rod 64 to move downward synchronously, and the push rod 64 moves downward to drive the connecting rod 65 to rotate, so that the connecting rod 65 drives the sliding sleeve 66 to move relatively. As the sliding sleeve 66 moves relatively, the adjusting roller 67 on the sliding sleeve 66 fits and clamps the implant nail, so that the aftershock transmitted to the implant nail by the motor 61 is eliminated through the adjusting roller 67, thereby avoiding the deviation of the advancement path of the implant nail and ensuring that the implant nail does not damage the neural vertebral body.

[0041] See also Figure 6-Figure 7The adjusting pressure roller 67 includes a guide sleeve 672 and a guide column 673. A slot 670 is provided inside the sliding sleeve 66. A micro cylinder 671 is installed inside the slot 670. The output end of the micro cylinder 671 is connected to the guide sleeve 672. The guide column 673 is slidably installed inside the guide sleeve 672. The guide columns 673 are connected by a supporting steel roller 674. A flexible bonding layer 675 is installed on the outer side of the supporting steel roller 674. A seam filling pad 676 is installed on one end of the guide sleeve 672 close to the supporting steel roller 674.

[0042] It should be noted that implant nails are usually made of titanium alloy. Titanium alloy has good biocompatibility and mechanical properties, and is suitable for use as a bone nail material. Bone nails made of this material can be well integrated with human bones, reduce rejection reactions, and help the healing process of fractures.

[0043] Since different implant nails have different uses and sizes, the pressure roller 67 can be adjusted to ensure that implant nails of different sizes can be fitted and clamped.

[0044] The present invention drives the micro cylinder 671 and drives the guide sleeve 672 to move relatively, thereby adjusting the relative position between the guide sleeve 672 and the guide column 673, changing the exposed area of ​​the flexible bonding layer 675 outside the supporting steel roller 674, so that a larger-sized implant nail can be completely bonded with the flexible bonding layer 675. As the guide sleeve 672 moves, the seam-filling pad 676 on the guide sleeve 672 is inserted into the gap between the flexible bonding layer 675 and the implant nail, thereby realizing the positioning of the implant nail, improving the stability of the implant nail, and increasing the accuracy of nail placement. After the implant screw is installed, the fixing head 11 and the fixing head 21 are then fixedly installed next to the operating table, and the main rod 12 and the support rod 1 13 are used to drive the main rod 22 and the support rod 23 to move synchronously, and then the position of the positioning component 3 and the propulsion component 6 is adjusted, so that the positioning ring 31 presses the patient's affected skin; the ball head 41 is rotated to adjust the insertion angle of the implant screw, and at the same time, the position of the pedicle injury is observed using X-ray fluoroscopy, and the insertion path of the implant screw is estimated by the insertion angle of the implant screw.

[0045] Start the motor 61, and through the threaded rod 62 and the threaded cooperation of the connecting plate 5, the motor 61 drives the connecting head 63 and the clamping head 25 to move downward synchronously, and the clamping head 25 moves downward to drive the support rod 23 to rotate along the rotating sleeve 24. When the support rod 23 abuts against the fixed block 26, as the support rod 23 rotates, the support rod 23 drives the rotating sleeve 24 to disengage from the rotating shaft 15. At the same time, the main rod 22 disengages from the rod groove 14. At this time, the fixing assembly 1 and the shock absorbing assembly 2 are respectively fixed on the operating table by the fixing head 1 11 and the fixing head 21. At this time, the fixing assembly 1 fixes the position of the positioning assembly 3, and the vibration of the main body of the motor 61 is transmitted through the shock absorbing assembly 2. The motor 61 is transmitted to the workbench, which can effectively prevent the motor 61 from driving the positioning component 3 to resonate; as the motor 61 moves downward, the motor 61 drives the implant nail on the connecting head 63 to penetrate the guide groove 43 and be inserted into the bone. In this process, the motor 61 drives the push rod 64 to move downward synchronously, and the push rod 64 moves downward to drive the connecting rod 65 to rotate, so that the connecting rod 65 drives the sliding sleeve 66 to move relatively. As the sliding sleeve 66 moves relatively, the adjusting roller 67 on the sliding sleeve 66 fits and clamps the implant nail, so that the aftershock transmitted to the implant nail by the motor 61 is eliminated through the adjusting roller 67, thereby avoiding the deviation of the advancement path of the implant nail and ensuring that the implant nail does not damage the neural vertebral body.

[0046] See also Figure 8-Figure 10 The fixing assembly 1 includes a fixing head 11 and a main rod 12 rotatably mounted on the fixing head 11, the main rod 12 is connected to a support rod 13 via a rotating shaft 15, the support rod 13 is connected to a fixing ring 33 via a mounting head 16, the shock absorbing assembly 2 includes a fixing head 21 and a main rod 22 rotatably mounted on the fixing head 21, the main rod 22 is connected to a support rod 23 via a rotating sleeve 24, and the support rod 23 is connected to a motor 61 via a clamping head 25.

[0047] Specifically, the main rod 12 is provided with a rod groove 14 , and the main rod 22 is located in the rod groove 14 , and the rotating sleeve 24 is sleeved with the rotating sleeve 24 .

[0048] Specifically, a fixing block 26 is installed on the edge of the rotating sleeve 24 , and the fixing block 26 abuts against the fixing block 26 and the second main rod 22 .

[0049] It should be noted that, in the adjustment mode, the main rod 22 is located in the rod groove 14, and the rotating sleeve 24 is engaged with the rotating shaft 15. At this time, rotating the main rod 12 and the support rod 13 can simultaneously adjust the positioning assembly 3 and the propulsion assembly 6, so that the doctor can adjust the positioning assembly 3 and the propulsion assembly 6 to the accurate position at the same time, simplifying the operation steps and saving operation time; when the motor 61 is in the working state, through the threaded cooperation between the threaded rod 62 and the connecting plate 5, the motor 61 drives the connecting head 63 and the clamping head 25 to move downward, and the clamping head 25 moves downward to drive the support rod 23 to rotate along the rotating sleeve 24. When the support rod 23 abuts against the fixed block 26, the rotating sleeve 24 disengages from the rotating shaft 15. At the same time, the main rod 22 disengages from the rod groove 14. At this time, the fixing assembly 1 and the shock absorbing assembly 2 are separated, and the fixing assembly 1 fixes the position of the positioning assembly 3. The vibration generated by the main body of the motor 61 is transmitted to the workbench through the shock absorbing assembly 2, which can effectively prevent the motor 61 from driving the positioning assembly 3 to resonate.

[0050] The implementation principle of the present invention is: The implant screw is installed on the connecting head 63, and then the fixing head 11 and the fixing head 21 are fixedly installed next to the operating table. The main rod 12 and the support rod 13 drive the main rod 22 and the support rod 23 to move synchronously, and then adjust the position of the positioning component 3 and the propulsion component 6, so that the positioning ring 31 presses the patient's affected skin; rotate the ball head 41 to adjust the insertion angle of the implant screw, and at the same time, use X-ray fluoroscopy to observe the position of the pedicle injury, and estimate the insertion path of the implant screw through the insertion angle of the implant screw.

[0051] Start the motor 61, and through the threaded rod 62 and the threaded cooperation of the connecting plate 5, the motor 61 drives the connecting head 63 and the clamping head 25 to move downward synchronously, and the clamping head 25 moves downward to drive the support rod 23 to rotate along the rotating sleeve 24. When the support rod 23 abuts against the fixed block 26, as the support rod 23 rotates, the support rod 23 drives the rotating sleeve 24 to disengage from the rotating shaft 15. At the same time, the main rod 22 disengages from the rod groove 14. At this time, the fixing assembly 1 and the shock absorbing assembly 2 are respectively fixed on the operating table by the fixing head 1 11 and the fixing head 21. At this time, the fixing assembly 1 fixes the position of the positioning assembly 3, and the vibration of the main body of the motor 61 is transmitted through the shock absorbing assembly 2. The motor 61 is transmitted to the workbench, which can effectively prevent the motor 61 from driving the positioning component 3 to resonate; as the motor 61 moves downward, the motor 61 drives the implant nail on the connecting head 63 to penetrate the guide groove 43 and be inserted into the bone. In this process, the motor 61 drives the push rod 64 to move downward synchronously, and the push rod 64 moves downward to drive the connecting rod 65 to rotate, so that the connecting rod 65 drives the sliding sleeve 66 to move relatively. As the sliding sleeve 66 moves relatively, the adjusting roller 67 on the sliding sleeve 66 fits and clamps the implant nail, so that the aftershock transmitted to the implant nail by the motor 61 is eliminated through the adjusting roller 67, thereby avoiding the deviation of the advancement path of the implant nail and ensuring that the implant nail does not damage the neural vertebral body.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An orthopedic screw placement device for improving the stability of pedicle screws, characterized in that: The invention comprises a fixing component (1) and a detachable shock absorbing component (2) mounted on the fixing component (1), wherein the fixing component (1) and the shock absorbing component (2) are respectively connected to a positioning component (3) and a propulsion component (6), wherein the positioning component (3) comprises a positioning ring (31) and a fixing ring (33), wherein the positioning ring (31) is attached to the affected part of the patient, wherein the positioning ring (31) is connected to the fixing ring (33) via a fixing rod (32), wherein an angle adjustment component (4) is rotatably mounted in the fixing ring (33), wherein the angle adjustment component (4) comprises a ball head (41) and a guide groove (43), wherein the ball head (41) has a guide groove (43), wherein a connecting plate (5) is fixedly mounted on the ball head (41), wherein the propulsion component (6) is mounted on the connecting plate (5), and wherein the propulsion component (6) comprises a connecting head (63), wherein the connecting head (63) is connected to an implant nail, and wherein the implant nail passes through the guide groove (43).

2. An orthopedic screw placement device for improving the stability of pedicle screws according to claim 1, characterized in that: A ball sleeve (34) is installed in the fixing ring (33), and the ball sleeve (34) is movably connected to the ball head (41).

3. The orthopedic screw placement device for improving the stability of pedicle screws according to claim 1, characterized in that: The propulsion assembly (6) comprises an electric motor (61), the output end of the electric motor (61) is connected to a threaded rod (62), the threaded rod (62) is threadably matched with the connecting plate (5), and a connector (63) is installed at one end of the electric motor (61) away from the threaded rod (62). The angle adjustment assembly (4) further comprises a guide groove (42), the guide groove (42) is connected to the guide groove (43), and the guide groove (42) is matched with the connector (63).

4. The orthopedic screw placement device for improving the stability of pedicle screws according to claim 1, characterized in that: The ball head (41) has a push groove (44) in communication with the guide groove (43). The propulsion assembly (6) further comprises a push rod (64). One end of the push rod (64) is fixedly connected to the motor (61). The other end of the push rod (64) is rotatably connected to a connecting rod (65). A sliding sleeve (66) is rotatably mounted on the connecting rod (65). An adjusting pressure roller (67) is connected to the sliding sleeve (66). The adjusting pressure roller (67) clamps the implant nail.

5. The orthopedic screw placement device for improving the stability of pedicle screws according to claim 4, characterized in that: The adjusting pressure roller (67) comprises a guide sleeve (672) and a guide post (673); a notch (670) is provided inside the sliding sleeve (66); a micro cylinder (671) is installed inside the notch (670); an output end of the micro cylinder (671) is connected to the guide sleeve (672); a guide post (673) is slidably installed inside the guide sleeve (672); the guide posts (673) are connected to each other via a supporting steel roller (674); a flexible bonding layer (675) is installed outside the supporting steel roller (674); and a seam-filling pad (676) is installed at one end of the guide sleeve (672) close to the supporting steel roller (674).

6. The orthopedic screw placement device for improving the stability of pedicle screws according to claim 1, characterized in that: The fixing assembly (1) comprises a fixing head (11) and a main rod (12) rotatably mounted on the fixing head (11); the main rod (12) is connected to a support rod (13) via a rotating shaft (15); the support rod (13) is connected to a fixing ring (33) via a mounting head (16); the vibration absorbing assembly (2) comprises a fixing head (21) and a main rod (22) rotatably mounted on the fixing head (21); the main rod (22) is connected to a support rod (23) via a rotating sleeve (24); the support rod (23) is connected to a motor (61) via a clamping head (25).

7. An orthopedic screw placement device for improving the stability of pedicle screws according to claim 6, characterized in that: The main rod one (12) is provided with a rod groove (14), and the main rod two (22) is located in the rod groove (14), and the rotating sleeve (24) is sleeved with the rotating sleeve (24).

8. An orthopedic screw placement device for improving the stability of pedicle screws according to claim 7, characterized in that: A fixing block (26) is installed on the edge of the rotating sleeve (24), and the fixing block (26) abuts against the fixing block (26) and the second main rod (22).

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