Integrated spinal endoscope lower end plate processor

Abstract

The invention discloses an integrated spine endoscope lower end plate processor, and belongs to the technical field of spine endoscopes, the integrated spine endoscope lower end plate processor comprises an end plate processor body, and a drag hook mounting plate is fixed to the top end of one side of the end plate processor body; and a mounting mechanism convenient to disassemble, assemble and replace is arranged outside the end plate processor body and the adjusting pipe, and a switch mechanism for preventing too deep scraping is arranged in the mounting mechanism. By arranging the mounting mechanism and the switching mechanism, a gear ring shifting piece is manually pulled, so that a limiting cam does not limit an adjusting pipe any more, a reamer is fed into an intervertebral space through a T-shaped handle, the gear ring shifting piece and an arc-shaped spring are loosened, the limiting cam limits the adjusting pipe, and the T-shaped handle can only rotate and cannot move up and down; over-deep scraping can be effectively prevented, excessive damage to cancellous bones of the centrum is avoided, and therefore the amount of bleeding in the operation and the potential risk of centrum sedimentation are reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of spinal endoscopy, and particularly relates to an integrated endplate processor under spinal endoscopy. BACKGROUND

[0002] Degenerative changes of lumbar intervertebral disc and articular process are common diseases of the elderly and one of the most common causes of disability, and lumbar disease causes patients to have mechanical low back pain, nerve root compression symptoms, claudication symptoms, reduced activity and low quality of life, etc. Patients with severe lumbar spinal stenosis, lumbar instability, spondylolisthesis, etc. with symptoms will be recommended to receive lumbar fusion surgery treatment. As a representative of minimally invasive spine surgery, endoscopic spinal surgery technology is increasingly attracting the attention of domestic spine and pain experts, and is recognized by the international spine surgery community as a minimally invasive treatment technology for a variety of intervertebral disc, vertebral body and spinal canal diseases, and is a new trend and important development direction of spine surgery. After the protruding intervertebral disc is removed in the spine surgery, bone grafting is needed to the intervertebral space to make the two vertebral bodies appear bone fusion after the surgery, so as to ensure the stability of the entire spine and prevent adjacent segment degeneration. The postoperative effect of intervertebral fusion surgery depends largely on the intervertebral fusion effect, and the intervertebral bone fusion effect largely depends on the preparation of the intervertebral bone graft bed, that is, whether the cartilage endplate under the lamina is completely removed to make the vertebral bone surface and the bone graft fully contact. The endplate processor is used for surgery.

[0003] Endoscopic fusion technology is a perfect combination of spinal endoscopy and lumbar minimally invasive fusion technology. Compared with traditional open lumbar fusion surgery, endoscopic lumbar fusion technology has many characteristics such as small tissue damage, small risk, fast recovery, and few long-term complications after surgery. However, in clinical operation, the traditional endplate processing instrument is used to process the endplate and intervertebral disc under the mirror, which not only has low efficiency, but also easily damages the lens. Some use blind processing, although the efficiency is high, but the effect is not accurate by relying on feeling and experience, which can easily cause nerve damage, excessive or uneven destruction of vertebral cancellous bone, and affect the effect of endoscopic lumbar fusion surgery.

[0004] Therefore, it is urgent to provide an integrated endplate processor under spinal endoscopy to solve the above problems. SUMMARY

[0005] The technical problem to be solved by the application is to overcome the shortcomings of the prior art and provide an integrated endplate processor under spinal endoscopy.

[0006] The technical solution adopted to solve the above technical problems is: an integrated spinal endplate processor, including an endplate processor body, a hook mounting plate fixed to the top of one side of the endplate processor body, and a traction mechanism that integrates nerve hooks and endplate processing on one side of the hook mounting plate. An adjustment tube is slidably installed inside the terminal board processor body, and multiple evenly distributed annular grooves are provided on the outside of the adjustment tube. The terminal board processor body and the regulating tube are provided with an external mounting mechanism for easy disassembly and replacement, and the mounting mechanism is provided with an internal switching mechanism to prevent excessive scraping. The top of the regulating tube is equipped with a rotating mechanism that manually drives the reamer to process the planting gap. Inside the rotating mechanism is an adjusting mechanism for adjusting the diameter of the reamer. An anti-torsion grip is fixed on the other side of the end plate processor body.

[0007] Furthermore, the traction mechanism includes a hook shaft rotatably mounted inside the rotating groove of the hook mounting plate. One end of the hook shaft is fixed with a flat nerve hook. A hook limiting seat is fixed at the bottom side of one side of the endplate processor body. The inside of the hook limiting seat is rotatably connected to the outside of the flat nerve hook. Both sides of the rotating groove of the hook mounting plate are provided with hook slots. The inside of the hook slots is fitted and connected to the outside of the hook shaft.

[0008] Through the above technical solution, the retractor shaft achieves circumferential rotation through the rotating groove of the retractor mounting plate, which drives the flat nerve retractor to rotate synchronously. The spherical head of the flat nerve retractor is embedded in the limiting groove of the retractor limiting seat, which restricts lateral displacement, ensures accurate rotation trajectory, prevents accidental slippage, and reduces the shaking amplitude of the retractor during surgery.

[0009] Furthermore, two mounting plate guide rails are fixed on one side of the hook mounting plate, and spring housings are slidably mounted on the outside of the two mounting plate guide rails. A telescopic spring is fitted inside the spring housing, and a limiting lifting block that penetrates and extends to the outside of the spring housing is fixed to one end of the telescopic spring. A housing sealing plate that is fixed to the hook mounting plate by screws is attached to the bottom end of the spring housing.

[0010] With the above technical solution, in actual operation, when it is necessary to perform parallel flipping of the flat nerve retractor, the doctor gently presses down the limiting lifting block. At this time, the limiting lifting block will move downward along the spring shell, compressing the telescopic spring. As the limiting lifting block moves downward, it no longer limits and fixes the retractor shaft, allowing the doctor to smoothly flip the retractor shaft 180 degrees. After the flip is completed, the doctor releases the hand, and the telescopic spring will quickly rebound due to its elastic potential energy, pushing the limiting lifting block upward to reset, thus limiting and fixing the retractor shaft again, ensuring that the flat nerve retractor is in a stable working position. When it is necessary to replace the flat nerve retractor, first use a screwdriver to unscrew the screws fixing the outer shell sealing plate, and slide the outer shell sealing plate and spring shell out from the retractor mounting plate along the direction of the mounting plate guide rail. At this time, the retractor shaft and flat nerve retractor are exposed and can be easily replaced. After replacement, install the spring shell and outer shell sealing plate in reverse order and tighten the screws to restore the device to normal working condition.

[0011] Furthermore, the mounting mechanism includes a pipe limiting flange fitted onto the top of the terminal board processor body. A first mounting collar is fitted onto one side of the pipe limiting flange, and a second mounting collar is fitted onto the other side of the pipe limiting flange. A first blocking collar is attached to the top of the first mounting collar, and a second blocking collar is attached to the top of the second mounting collar. The two ends of the first mounting collar, the second mounting collar, the first blocking collar, and the second blocking collar are fixed by bolts.

[0012] Through the above technical solution, the regulating pipe can slide up and down and rotate through the end plate processor body. The pipe limiting flange can limit the top of the end plate processor body to prevent the regulating pipe from coming off the top of the end plate processor body. The first mounting collar and the second mounting collar are nested and fixed on the outside of the flange of the end plate processor body and the regulating pipe, which plays a role in stabilizing the connection and further enhancing the stability of the overall structure. The tops of the first mounting collar and the second mounting collar are sealed by the first shielding collar and the second shielding collar, which not only protects the internal connection structure, but also covers the annular groove of the regulating pipe to prevent external impurities from entering the annular groove and affecting the normal sliding and rotation functions of the regulating pipe.

[0013] Furthermore, the switching mechanism includes limiting cams that are rotatably mounted on the inner walls of the first mounting collar and the second mounting collar, respectively. The top ends of both limiting cams are fixed with mounting gears, and the inner walls of the first mounting collar and the second mounting collar are fixed with arc-shaped mounting shells.

[0014] With the above technical solution, when the adjustment tube only needs to rotate, the drive gear drives the limit cam to rotate until the protruding side of the limit cam is tightly connected with the annular groove. At this time, the adjustment tube is limited and can only rotate in the horizontal direction. When the adjustment tube needs to slide up and down and rotate, the drive gear continues to drive the limit cam to rotate 180 degrees, so that it separates from the annular groove, and the adjustment tube can move in both the vertical and horizontal directions at the same time.

[0015] Furthermore, a first toothed ring is rotatably mounted inside the first mounting collar, and a second toothed ring is rotatably mounted inside the second mounting collar. The first and second toothed rings mesh with mounting gears. An arc-shaped slider with one end penetrating through and extending into the arc-shaped mounting shell is fixed to the bottom end of both the first and second toothed rings. An arc-shaped spring is fixed between the arc-shaped slider and the arc-shaped mounting shell. A toothed ring paddle is fixed to one side of the second toothed ring, and a limiting paddle groove is provided at the top end of the second mounting collar. The interior of the limiting paddle groove is slidably connected to the exterior of the toothed ring paddle.

[0016] With the above technical solution, when it is necessary to change the rotation direction of the mounting gear, the toothed ring paddle is manually turned. Due to the limitation of the limiting paddle slot, the toothed ring paddle can only rotate along a specific trajectory. At the same time, the toothed ring paddle drives the first toothed ring and the second toothed ring to rotate through the first mounting sleeve and the second mounting sleeve, respectively. Because the first toothed ring and the second toothed ring are engaged with the mounting gear, they will drive the two mounting gears to rotate synchronously by 180 degrees. When the toothed ring paddle is released, because the arc spring was previously compressed and stored elastic potential energy, a rebound will occur. The arc spring drives the first toothed ring and the second toothed ring to reverse through the arc slider, thereby causing the first toothed ring and the second toothed ring to drive the two mounting gears to rotate in the opposite direction by 180 degrees.

[0017] Furthermore, the rotating mechanism includes a first fixed shell fixed to one side of the top end of the adjusting tube by screws, a second fixed shell fixed to the other side of the top end of the adjusting tube by screws, a T-shaped handle fixed to the top end of the second fixed shell, a mounting sleeve shaft with one end penetrating through and extending into the interior of the final board processor body being fitted and fixed between the first fixed shell and the second fixed shell, and a positioning rotating ring fixed to the bottom end of the inner wall of the final board processor body, the interior of the positioning rotating ring being rotatably connected to the exterior of the mounting sleeve shaft.

[0018] With the above technical solution, the first fixed shell and the second fixed shell are driven to rotate by the T-shaped handle. The first fixed shell and the second fixed shell drive the adjusting tube and the mounting sleeve shaft to rotate accordingly. The mounting sleeve shaft rotates smoothly through the positioning swivel.

[0019] Furthermore, a reamer housing cover is fixed to the bottom end of the mounting sleeve shaft, and a reamer housing is fixed to the bottom end of the reamer housing cover by screws. The reamer housing has evenly distributed reamer mounting grooves on its exterior.

[0020] With the above technical solution, when the mounting sleeve shaft rotates, it will cause the reamer housing cover and the reamer housing to rotate together because it is connected to them. Under the constraint of the reamer mounting slot, the reamer maintains a stable posture to perform cutting operations. When replacing the reamer, the reamer housing can be removed to replace the reamer.

[0021] Furthermore, the adjusting mechanism includes an adjusting screw rotatably mounted inside the mounting sleeve shaft, a screw worm gear fixed to the top end of the adjusting screw, a second worm rotatably mounted inside the first fixed housing, and the outer side of the second worm meshing with the outer side of the screw worm gear.

[0022] Using the above technical solution, the doctor manually rotates the second worm gear, which drives the adjusting screw to rotate through the screw and worm wheel. The adjusting screw rotates stably through the mounting sleeve shaft.

[0023] Furthermore, an adjusting screw block is threadedly installed and fixed at the bottom end of the adjusting screw, and an end plate reamer is slidably installed on the reamer housing through the reamer mounting groove. A connecting rod is rotatably installed between the end plate reamer and the adjusting screw block.

[0024] With the above technical solution, when it is necessary to adjust the reamer diameter, simply rotate the adjusting screw to raise or lower the adjusting screw block. As the adjusting screw block moves, the connecting rod moves accordingly, driving the endplate reamer to extend and retract through the reamer mounting slot, thus easily changing the reamer diameter.

[0025] The beneficial effects of this invention are as follows: (1) The present invention is equipped with an installation mechanism and a switch mechanism. The toothed ring is manually activated so that the limiting cam no longer limits the adjustment tube. The reamer is sent into the intervertebral space through the T-shaped handle. The toothed ring is released and the arc spring limits the limiting cam to the adjustment tube, so that the T-shaped handle can only rotate and cannot move up and down. This can effectively prevent scraping too deeply and avoid excessive damage to the cancellous bone of the vertebral body, thereby reducing the amount of bleeding during the operation and the potential risk of vertebral body subsidence. (2) The present invention is equipped with a traction mechanism. After the limiting lifting block is pressed down, the flat nerve hook is manually flipped so that the flat nerve hook can be opened in parallel. The limiting lifting block then rebounds to fix the flat nerve hook. This makes it convenient to use the flat nerve hook to open the nerve and expose the decompression intervertebral space. It integrates the functions of nerve hook and endplate treatment into one, avoiding the cumbersome steps of repeatedly exchanging different instruments in traditional surgery. It significantly reduces the operation time of a single endplate treatment, shortens the total operation time, and reduces the risk of interference to the surgical channel caused by frequent instrument entry and exit. This makes the surgical process smoother and more efficient, greatly enhances the safety of the operation, and reduces the risk of complications. (3) The present invention has a rotating mechanism and an adjusting mechanism. The T-shaped handle can drive the endplate reamer to rotate and process the implant gap. The diameter of the endplate reamer is adjustable, which can better match the anatomical shape of the lumbar endplate. This allows the surgeon to prepare a large, flat bone graft bed with uniformly preserved subchondral bone.

[0026] (4) This invention is designed to address the narrow working channel of endoscopic surgery. During operation, the instrument can effectively avoid scratching and colliding with the endoscope lens, protecting this expensive and precise visual system and reducing unnecessary equipment maintenance costs. Furthermore, because it enables precise and controllable operation under direct endoscopic vision, it completely changes the rough method of blind treatment that relies on touch. The surgeon can clearly distinguish the endplate and the surrounding important nerve and blood vessel structures, thereby greatly reducing the probability of serious complications such as nerve root injury and dural sac tear. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is an exploded structural diagram of the traction mechanism of the present invention; Figure 5 This is an exploded structural diagram of the mounting mechanism and switching mechanism of the present invention; Figure 6 This is a schematic diagram of the first and second mounting collar structures of the present invention; Figure 7 This is a schematic diagram of the first and second toothed ring structures of the present invention; Figure 8 This is a schematic diagram of the internal structure of the first and second mounting collars of the present invention; Figure 9 This is a schematic diagram of the internal structure of the first and second fixed shells of the present invention; Figure 10This is an exploded view of the rotating mechanism and adjusting mechanism of the present invention; Figure 11 This is a schematic diagram of the reamer housing cover structure of the present invention.

[0028] Reference numerals: 1. Terminal plate processor body; 2. Hook mounting plate; 3. Pulling mechanism; 301. Hook pivot; 302. Flat nerve hook; 303. Hook limit seat; 304. Mounting plate guide rail; 305. Spring housing; 306. Telescopic spring; 307. Limit lifting block; 308. Housing sealing plate; 4. Adjusting pipe; 5. Annular groove; 6. Mounting mechanism; 601. Pipeline limiting flange; 602. First mounting collar; 603. Second mounting collar; 604. First shielding collar; 605. Second shielding collar; 7. Switching mechanism; 701. Limiting cam; 702. Mounting gear 703. Arc-shaped mounting shell; 704. First toothed ring; 705. Second toothed ring; 706. Arc-shaped slider; 707. Arc-shaped spring; 708. Toothed ring paddle; 8. Rotating mechanism; 801. First fixed shell; 802. Second fixed shell; 803. T-shaped handle; 804. Mounting sleeve shaft; 805. Reamer shell cover; 806. Reamer shell; 807. Reamer mounting slot; 9. Adjusting mechanism; 901. Adjusting screw; 902. Screw worm gear; 903. Second worm; 904. Adjusting screw block; 905. End plate reamer; 906. Connecting rod; 10. Positioning swivel; 11. Anti-torsion grip. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] like Figures 1-11As shown, an integrated spinal endplate processor of this embodiment includes an endplate processor body 1, an anti-torsion handle 11 fixed to the other side of the endplate processor body 1, a hook mounting plate 2 fixed to the top of one side of the endplate processor body 1, and a traction mechanism 3 integrating a nerve retractor and endplate processing on one side of the hook mounting plate 2; the traction mechanism 3 includes a hook shaft 301 rotatably mounted inside the rotating groove of the hook mounting plate 2, a flat nerve retractor 302 fixed to one end of the hook shaft 301, and a hook limiting seat 303 fixed to the bottom of one side of the endplate processor body 1, the inside of the hook limiting seat 303 being rotatably connected to the outside of the flat nerve retractor 302, and the rotating groove of the hook mounting plate 2... Both sides of the hook are provided with hook slots. The inside of the hook slots is fitted and connected to the outside of the hook shaft 301. Two mounting plate guide rails 304 are fixed on one side of the hook mounting plate 2. Spring housings 305 are slidably mounted on the outside of the two mounting plate guide rails 304. A telescopic spring 306 is fitted inside the spring housing 305. A limiting lifting block 307 is fixed to one end of the telescopic spring 306, which penetrates and extends to the outside of the spring housing 305. The bottom end of the spring housing 305 is fitted with a housing sealing plate 308 that is fixed to the hook mounting plate 2 by screws. The hook shaft 301 rotates circumferentially through the rotation slot of the hook mounting plate 2, driving the flat nerve hook 302 to rotate synchronously. The spherical head of the retractor 302 is embedded in the limiting groove of the retractor limiting seat 303, limiting lateral displacement, ensuring accurate flipping trajectory, preventing accidental slippage, and reducing the shaking amplitude of the retractor during surgery. In actual operation, when it is necessary to perform parallel flipping of the flat nerve retractor 302, the doctor gently presses down the limiting lifting block 307. At this time, the limiting lifting block 307 will move downward along the spring shell 305, while compressing the telescopic spring 306. As the limiting lifting block 307 moves downward, it no longer limits and fixes the retractor shaft 301, and the doctor can then smoothly flip the retractor shaft 301 180 degrees. After the flipping is completed, the hand is released, and the telescopic spring 306 will rebound quickly due to the elastic potential energy. Push the limit lifting block 307 upward to reset, thereby limiting and fixing the hook shaft 301 again, ensuring that the flat nerve hook 302 is in a stable working position. When the flat nerve hook 302 needs to be replaced, first use a screwdriver to unscrew the screws fixing the outer shell sealing plate 308, and slide the outer shell sealing plate 308 and the spring shell 305 out of the hook mounting plate 2 along the direction of the mounting plate guide rail 304. At this time, the hook shaft 301 and the flat nerve hook 302 are exposed and can be easily replaced. After the replacement is completed, install the spring shell 305 and the outer shell sealing plate 308 in reverse order and tighten the screws to restore the device to normal working state.

[0031] like Figures 5-8As shown, an adjusting tube 4 is slidably installed inside the terminal processor body 1, and multiple evenly distributed annular grooves 5 are provided on the outside of the adjusting tube 4. The terminal processor body 1 and the adjusting tube 4 are provided with a mounting mechanism 6 for easy disassembly and replacement. The mounting mechanism 6 includes a pipe limiting flange 601 fitted onto the top of the terminal processor body 1. A first mounting collar 602 is fitted onto one side of the pipe limiting flange 601, and a second mounting collar 603 is fitted onto the other side. A first blocking collar 604 is attached to the top of the first mounting collar 602, and a second blocking collar 605 is attached to the top of the second mounting collar 603. The two ends of the first mounting collar 602, the second mounting collar 603, the first blocking collar 604, and the second blocking collar 605 are fixed by bolts. 4. The terminal plate processor body 1 can slide up and down and rotate. The pipe limiting flange 601 can limit the top of the terminal plate processor body 1 to prevent the regulating pipe 4 from coming off the top of the terminal plate processor body 1. The first mounting collar 602 and the second mounting collar 603 are nested and fixed on the outside of the flange of the terminal plate processor body 1 and the regulating pipe 4, which plays a role in stabilizing the connection and further enhancing the overall structural stability. The tops of the first mounting collar 602 and the second mounting collar 603 are closed by the first blocking collar 604 and the second blocking collar 605, which not only protects the internal connection structure, but also covers the annular groove 5 of the regulating pipe 4 to prevent external impurities from entering the annular groove 5 and affecting the normal sliding and rotation functions of the regulating pipe 4.

[0032] like Figures 3-8As shown, the mounting mechanism 6 has an internal switching mechanism 7 to prevent excessive scraping. The switching mechanism 7 includes limiting cams 701 that are rotatably mounted on the inner walls of the first mounting collar 602 and the second mounting collar 603, respectively. A mounting gear 702 is fixed to the top of each of the two limiting cams 701. An arc-shaped mounting shell 703 is fixed to the inner walls of both the first mounting collar 602 and the second mounting collar 603. A first gear ring 704 is rotatably mounted inside the first mounting collar 602, and a first toothed ring 704 is rotatably mounted inside the second mounting collar 603. A second toothed ring 705 is provided. The first toothed ring 704 and the second toothed ring 705 mesh with the mounting gear 702. An arc-shaped slider 706, with one end penetrating and extending into the arc-shaped mounting shell 703, is fixed to the bottom end of both the first toothed ring 704 and the second toothed ring 705. An arc-shaped spring 707 is fixed between the arc-shaped slider 706 and the arc-shaped mounting shell 703. A toothed ring paddle 708 is fixed to one side of the second toothed ring 705. A limiting paddle groove is provided at the top of the second mounting collar 603. The interior of the limiting paddle groove interacts with the toothed ring paddle 708. The external sliding connection of 8 allows the adjusting tube 4 to rotate only when the tube needs to be adjusted. The driving gear 702 rotates the limiting cam 701 until the protruding side of the limiting cam 701 is tightly connected to the annular groove 5. At this point, the adjusting tube 4 is limited and can only rotate horizontally. When the adjusting tube 4 needs to slide up and down and rotate, the driving gear 702 continues, causing the limiting cam 701 to rotate 180 degrees, separating it from the annular groove 5. The adjusting tube 4 can then move simultaneously in both the vertical and horizontal directions. When the rotation direction of the driving gear 702 needs to be changed, the toothed ring paddle 708 is manually moved. Due to the limitation of the limiting paddle groove, the toothed ring paddle 708 can only rotate along a specific trajectory. Simultaneously, the toothed ring paddle 708 drives the first toothed ring 704 and the second toothed ring 705 to rotate through the first mounting collar 602 and the second mounting collar 603, respectively. Because the first toothed ring 704 and the second toothed ring 705 mesh with the driving gear 702, they drive the two driving gears 702 to rotate synchronously by 180 degrees. When the toothed ring lever 708 is released, the arc spring 707 will rebound because it was previously compressed and stored elastic potential energy. The arc spring 707 drives the first toothed ring 704 and the second toothed ring 705 to reverse through the arc slider 706, which in turn drives the first toothed ring 704 and the second toothed ring 705 to rotate the two mounting gears 702 in the opposite direction by 180 degrees.

[0033] like Figures 2-11As shown, the top end of the adjusting tube 4 is equipped with a rotating mechanism 8 for manually driving the reamer to process the planting gap. The rotating mechanism 8 includes a first fixed shell 801 fixed to one side of the top end of the adjusting tube 4 by screws, and a second fixed shell 802 fixed to the other side of the top end of the adjusting tube 4 by screws. A T-shaped handle 803 is fixed to the top end of the second fixed shell 802. A mounting sleeve shaft 804 with one end penetrating through and extending into the interior of the end plate processor body 1 is fitted and fixed between the first fixed shell 801 and the second fixed shell 802. A positioning rotating ring 10 is fixed to the bottom end of the inner wall of the end plate processor body 1. The interior of the positioning rotating ring 10 is rotatably connected to the exterior of the mounting sleeve shaft 804. A reamer housing cover 805 is fixed to the bottom end of the mounting sleeve shaft 804. The bottom end is fixed with a reamer housing 806 by screws. The reamer housing 806 has evenly distributed reamer mounting slots 807 on its exterior. The first fixed housing 801 and the second fixed housing 802 are driven to rotate by the T-shaped handle 803. The first fixed housing 801 and the second fixed housing 802 drive the adjusting tube 4 and the mounting sleeve shaft 804 to rotate accordingly. The mounting sleeve shaft 804 rotates smoothly through the positioning rotating ring 10. When the mounting sleeve shaft 804 rotates, since it is connected to the reamer housing cover 805 and the reamer housing 806, it will drive them to rotate together. Under the restriction of the reamer mounting slots 807, the reamer maintains a stable posture for cutting operations. When replacing the reamer, the reamer housing 806 can be removed to replace the reamer.

[0034] like Figure 9 and Figure 10 As shown, the rotating mechanism 8 is equipped with an adjusting mechanism 9 for adjusting the diameter of the reamer. The adjusting mechanism 9 includes an adjusting screw 901 rotatably mounted inside the mounting sleeve shaft 804. A screw worm gear 902 is fixed to the top of the adjusting screw 901. A second worm 903 is rotatably mounted inside the first fixed housing 801. The outside of the second worm 903 meshes with the outside of the screw worm gear 902. An adjusting screw block 904 is threadedly mounted and fixed to the bottom of the adjusting screw 901. The reamer housing 806 has an end plate reamer 905 slidably mounted on it through a reamer mounting groove 807. A connecting rod 906 is rotatably mounted between the endplate reamer 905 and the adjusting screw block 904. When the reamer diameter needs to be adjusted, the doctor manually rotates the second worm gear 903. The second worm gear 903 drives the adjusting screw 901 to rotate through the screw worm wheel 902. The adjusting screw 901 rotates stably through the mounting sleeve shaft 804. The adjusting screw 901 drives the adjusting screw block 904 to rise and fall. The connecting rod 906 moves with the movement of the adjusting screw block 904 and drives the endplate reamer 905 to extend and retract through the reamer mounting slot 807, changing the diameter of the reamer.

[0035] The working principle of this embodiment is as follows: During spinal endoscopic surgery, the endplate processor body 1 is fixed by the anti-torsion grip 11. When it is necessary to perform a parallel flip on the flat nerve retractor 302, the doctor gently presses down on the limiting lifting block 307. At this time, the limiting lifting block 307 will move downward along the spring housing 305, while compressing the telescopic spring 306. As the limiting lifting block 307 moves downward, it no longer limits and fixes the retractor shaft 301. The doctor can then smoothly flip the retractor shaft 301 180 degrees. After the flip is completed, the doctor releases the hand, and the telescopic spring 306 will rebound rapidly due to the elastic potential energy, pushing the limiting lifting block 307 upward to reset, thereby limiting and fixing the retractor shaft 301 again, ensuring that the flat nerve retractor 302 is properly positioned. In a stable working position, the retractor shaft 301 drives the flat nerve retractor 302 to rotate synchronously. The spherical head of the flat nerve retractor 302 is embedded in the limiting groove of the retractor limiting seat 303, limiting lateral displacement, ensuring accurate rotation trajectory, preventing accidental slippage, and reducing the shaking amplitude of the retractor during surgery. When it is necessary to adjust the diameter of the retractor, the doctor manually rotates the second worm gear 903. The second worm gear 903 drives the adjusting screw 901 to rotate through the screw worm wheel 902. The adjusting screw 901 rotates stably through the mounting sleeve shaft 804. The adjusting screw 901 drives the adjusting screw block 904 to rise and fall. The connecting rod 906 moves with the movement of the adjusting screw block 904 and drives the endplate retractor 905 to extend and retract through the retractor mounting groove 807, changing the diameter of the retractor.

[0036] When the adjusting tube 4 needs to slide up and down, the toothed ring paddle 708 is manually moved. Due to the limitation of the limiting paddle groove, the toothed ring paddle 708 can only rotate along a specific trajectory. At the same time, the toothed ring paddle 708 drives the first toothed ring 704 and the second toothed ring 705 to rotate through the first mounting collar 602 and the second mounting collar 603 respectively. Because the first toothed ring 704 and the second toothed ring 705 are engaged with the mounting gear 702, they will drive the two mounting gears 702 to rotate synchronously by 180 degrees. The mounting gear 702 will drive the limiting cam 701 to rotate by 180 degrees, causing it to separate from the annular groove 5. The adjusting tube 4 can then slide up and down in the vertical direction. The first blocking collar 604 and the second blocking collar 605 can, when the adjusting tube 4 slides up and down, move the annular groove 5. The annular groove 5 is covered to prevent external impurities from affecting the normal sliding and rotation functions of the adjusting tube 4. After the toothed ring lever 708 is released, the arc spring 707, which was previously compressed and stored elastic potential energy, will rebound. The arc spring 707 drives the first toothed ring 704 and the second toothed ring 705 to reverse through the arc slider 706. This causes the first toothed ring 704 and the second toothed ring 705 to drive the two mounting gears 702 to rotate 180 degrees in the opposite direction. The mounting gears 702 drive the limiting cam 701 to rotate. The protruding side of the limiting cam 701 is tightly connected to the annular groove 5. At this time, the adjusting tube 4 is limited and can only rotate in the horizontal direction. This effectively prevents the reamer from scraping too deeply and avoids excessive damage to the cancellous bone of the vertebral body, thereby reducing the amount of intraoperative bleeding and the potential risk of vertebral body subsidence.

[0037] The first fixed shell 801 and the second fixed shell 802 are driven to rotate by the T-shaped handle 803. The first fixed shell 801 and the second fixed shell 802 drive the adjusting tube 4 and the mounting sleeve shaft 804 to rotate accordingly. The mounting sleeve shaft 804 rotates smoothly through the positioning rotating ring 10. When the mounting sleeve shaft 804 rotates, it will drive them to rotate together because it is connected to the reamer shell cover 805 and the reamer shell 806. The T-shaped handle 803 can drive the end plate reamer 905 to rotate to process the planting gap.

[0038] After the surgery, when replacing the reamer, the endplate reamer 905 can be replaced by removing the reamer housing 806. When it is necessary to replace the flat nerve retractor 302, first use a screwdriver to unscrew the screws fixing the housing sealing plate 308, and slide the housing sealing plate 308 and the spring housing 305 out of the hook mounting plate 2 along the direction of the mounting plate guide rail 304. At this time, the hook shaft 301 and the flat nerve retractor 302 are exposed and can be easily replaced. After the replacement is completed, install the spring housing 305 and the housing sealing plate 308 in reverse order and tighten the screws to restore the device to normal working condition.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An integrated spinal endoscopic endplate processor, comprising an endplate processor body (1), characterized in that: The top of one side of the endplate processor body (1) is fixed with a hook mounting plate (2), and one side of the hook mounting plate (2) is provided with a traction mechanism (3) that integrates nerve hooks and endplate processing. An adjustment tube (4) is slidably installed inside the terminal board processor body (1), and multiple evenly distributed annular grooves (5) are provided on the outside of the adjustment tube (4). The terminal board processor body (1) and the regulating tube (4) are provided with an installation mechanism (6) for easy disassembly and replacement. The installation mechanism (6) is provided with a switch mechanism (7) to prevent excessive scraping. The top of the regulating tube (4) is provided with a rotating mechanism (8) for manually driving the reamer to process the planting gap. The rotating mechanism (8) is provided with an adjusting mechanism (9) for adjusting the diameter of the reamer. An anti-torsion grip (11) is fixed on the other side of the end plate processor body (1).

2. The integrated spinal endoscopic endplate processor according to claim 1, characterized in that, The traction mechanism (3) includes a hook shaft (301) rotatably mounted inside the rotating groove of the hook mounting plate (2). One end of the hook shaft (301) is fixed with a flat nerve hook (302). A hook limiting seat (303) is fixed at the bottom of one side of the end plate processor body (1). The inside of the hook limiting seat (303) is rotatably connected to the outside of the flat nerve hook (302). Hook slots are provided on both sides of the rotating groove of the hook mounting plate (2). The inside of the hook slots is fitted and connected to the outside of the hook shaft (301).

3. The integrated spinal endoscopic endplate processor according to claim 1, characterized in that, Two mounting plate guide rails (304) are fixed on one side of the hook mounting plate (2). A spring housing (305) is slidably mounted on the outside of the two mounting plate guide rails (304). A telescopic spring (306) is fitted inside the spring housing (305). A limiting lifting block (307) is fixed at one end of the telescopic spring (306) and extends through and to the outside of the spring housing (305). A housing sealing plate (308) is attached to the bottom end of the spring housing (305) and fixed to the hook mounting plate (2) by screws.

4. The integrated spinal endoscopic endplate processor according to claim 1, characterized in that, The mounting mechanism (6) includes a pipe limiting flange (601) fitted onto the top of the terminal board processor body (1). A first mounting collar (602) is fitted onto one side of the pipe limiting flange (601), and a second mounting collar (603) is fitted onto the other side of the pipe limiting flange (601). A first blocking collar (604) is attached to the top of the first mounting collar (602), and a second blocking collar (605) is attached to the top of the second mounting collar (603). The two ends of the first mounting collar (602), the second mounting collar (603), the first blocking collar (604), and the second blocking collar (605) are fixed by bolts.

5. The integrated spinal endoscopic endplate processor according to claim 4, characterized in that, The switching mechanism (7) includes limiting cams (701) that are rotatably mounted on the inner walls of the first mounting collar (602) and the second mounting collar (603), respectively. The top ends of the two limiting cams (701) are fixed with mounting gears (702), and the inner walls of the first mounting collar (602) and the second mounting collar (603) are fixed with arc-shaped mounting shells (703).

6. The integrated spinal endoscopic endplate processor according to claim 5, characterized in that, A first toothed ring (704) is rotatably mounted inside the first mounting collar (602), and a second toothed ring (705) is rotatably mounted inside the second mounting collar (603). The first toothed ring (704) and the second toothed ring (705) mesh with the mounting gear (702). An arc-shaped slider (706) with one end penetrating through and extending into the arc-shaped mounting shell (703) is fixed at the bottom end of both the first toothed ring (704) and the arc-shaped mounting shell (703). An arc-shaped spring (707) is fixed between the arc-shaped slider (706) and the arc-shaped mounting shell (703). A toothed ring paddle (708) is fixed on one side of the second toothed ring (705). A limiting paddle groove is provided at the top end of the second mounting collar (603). The interior of the limiting paddle groove is slidably connected to the exterior of the toothed ring paddle (708).

7. The integrated spinal endoscopic endplate processor according to claim 1, characterized in that, The rotating mechanism (8) includes a first fixed shell (801) fixed to one side of the top end of the adjusting tube (4) by screws, and a second fixed shell (802) fixed to the other side of the top end of the adjusting tube (4) by screws. A T-shaped handle (803) is fixed to the top end of the second fixed shell (802). An installation sleeve shaft (804) with one end penetrating through and extending into the interior of the end plate processor body (1) is fitted and fixed between the first fixed shell (801) and the second fixed shell (802). A positioning rotating ring (10) is fixed to the bottom end of the inner wall of the end plate processor body (1). The interior of the positioning rotating ring (10) is rotatably connected to the exterior of the installation sleeve shaft (804).

8. The integrated spinal endoscopic endplate processor according to claim 7, characterized in that, The bottom end of the mounting sleeve shaft (804) is fixed with a reamer housing cover (805), and the bottom end of the reamer housing cover (805) is fixed with a reamer housing (806) by screws. The outside of the reamer housing (806) is provided with evenly distributed reamer mounting grooves (807).

9. The integrated spinal endoscopic endplate processor according to claim 8, characterized in that, The adjusting mechanism (9) includes an adjusting screw (901) rotatably mounted inside the mounting sleeve shaft (804), a screw worm gear (902) fixed at the top of the adjusting screw (901), a second worm (903) rotatably mounted inside the first fixed housing (801), and the outside of the second worm (903) meshing with the outside of the screw worm gear (902).

10. The integrated spinal endoscopic endplate processor according to claim 9, characterized in that, The bottom end of the adjusting screw (901) is threaded with an adjusting screw block (904) and the reamer housing (806) is slidably mounted with a final plate reamer (905) through a reamer mounting groove (807). A connecting rod (906) is rotatably mounted between the final plate reamer (905) and the adjusting screw block (904).

Images