Reset type fusion cage under minimally invasive spine endoscope

Abstract

The invention discloses a spine minimally invasive endoscopic reduction type fusion cage, and belongs to the technical field of medical treatment equipment.The spine minimally invasive endoscopic reduction type fusion cage comprises two symmetrically-arranged arc pieces, and the surfaces of the ends, away from each other, of the two arc pieces are fixedly connected with friction protruding pieces; supporting cabins are fixedly connected to the two sides of the ends, away from the friction protruding sheets, of the arc sheets, an extending cabin is slidably connected between the inner sides of the supporting cabins in a penetrating mode, a concave supporting block is arranged between the two arc sheets, and a triangular top block is slidably connected to the middle of the concave supporting block. By means of the structures such as the supporting cabin and the extension cabin, stable movement and height fixation in the supporting cabin are achieved, accurate clamping and fixing of the spine of a patient are achieved, meanwhile, flexible adjustment and resetting can be conducted according to operation requirements, the accuracy and safety of an operation are greatly improved, and wide application prospects are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical treatment equipment, and in particular relates to a minimally invasive spinal endoscopic reduction fusion device. Background Art

[0002] With the development of society, due to people working for a long time, people's spine will develop scoliosis, degenerative disc disease, disc herniation, osteoporosis, spondylolisthesis and other diseases, leading to spinal deformity, pain, nerve damage and partial or complete loss of mobility. In recent years, with the rapid development of clinical medicine, biomechanics and materials science, in order to treat people's diseases, therapists use posterior lumbar interbody fusion and other methods to treat patients, and fusion devices are necessary equipment for treatment. However, new fusion devices are constantly emerging. Taking materials as an example, carbon fiber polyetheretherketone and absorbable material interbody fusion devices have appeared; taking shapes as an example, rectangular, bullet-shaped, and anatomical interbody fusion devices have appeared.

[0003] However, many of the current lumbar interbody fusion devices are designed based on open surgery and are delivered using a single probe rod. They are not suitable for minimally invasive surgery and are prone to unstable fixation. In addition, the expanded structures are mostly fixed exposed structures, which can easily cause secondary damage during implantation into the human body. Therefore, they are not suitable for current medical treatment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a minimally invasive spinal endoscopic reduction fusion device.

[0005] The technical solution adopted to solve the above technical problems is: a minimally invasive spinal endoscopic reduction fusion device, including two symmetrically arranged arc plates, the surfaces of the ends of the two arc plates away from each other are fixedly connected with friction protrusions, the two sides of the ends of the arc plates away from the friction protrusions are fixedly connected with support cabins, the inner sides of the support cabins are penetrated and slidably connected with extension cabins, a concave support block is arranged between the two arc plates, and a triangular top block is slidably connected to the middle of the concave support block.

[0006] Furthermore, the bottom end surface of the concave support block is fitted with one of the arc pieces, and inclined grooves are provided on both sides of one end of the concave support block. A swivel is rotatably connected through the middle of the surface of the concave support block away from the inclined groove, and a first cross missing ring is rotatably connected to the inner side of the swivel. The first cross missing ring is slidably connected to the first cross rotating rod through the through end, and the first cross missing ring is fixedly connected to a threaded rod at one end away from the first cross rotating rod.

[0007] Through the above technical solution, a stable connection between the concave support block and the arc piece is achieved. At the same time, the design of the inclined groove increases the flexibility of the concave support block. The swivel is driven to rotate by the first cross missing ring, and the meshing sliding connection between the first cross missing ring and the first cross rotating rod realizes the precise adjustment of the first cross rotating rod. The setting of the threaded rod further increases the stability and firmness of the connection, making the entire fusion device safer and more reliable during use. It not only improves the resetting effect of the fusion device, but also greatly enhances its applicability in minimally invasive surgery.

[0008] Furthermore, the top surface of the triangular top block is fitted with another arc piece, an annular groove is provided in the middle of the triangular top block, and long grooves are provided on both sides of the inner wall of the annular groove close to the triangular top block, a threaded sleeve is slidably connected to the inner side of the annular groove, and limiting blocks are fixedly connected to both sides of the threaded sleeve respectively, the limiting blocks are meshed and slid with the long groove, and the inner side of the threaded sleeve is threadedly connected to the threaded rod.

[0009] Through the above technical solution, the triangular top block and the other arc piece are stably fitted. At the same time, the design of the annular groove provides a sliding track for the threaded sleeve. The meshing and sliding connection between the long groove and the limit block ensures the stable sliding of the threaded sleeve in the annular groove without deviation or shaking. The threaded connection between the threaded sleeve and the threaded rod realizes the precise adjustment of the threaded sleeve, making the reduction effect of the entire fusion device more accurate and reliable, which not only improves the lifting accuracy of the fusion device, but also further enhances its stability and safety in minimally invasive spinal surgery.

[0010] Furthermore, a plurality of C-shaped clamps are respectively arranged on both sides of the bottom end of the concave support block, and the plurality of C-shaped clamps are symmetrically arranged in pairs. A rotating shaft is fixedly connected to the top end of the C-shaped clamp, and the rotating shaft is rotatably connected to the concave support block. Gears are respectively fixedly connected to both ends of the rotating shaft, and the gears on the two symmetrically arranged C-shaped clamps are meshed with each other.

[0011] Through the above technical solution, the synchronous rotation of the two C-type splints is achieved. When the angle of the C-type splints needs to be adjusted, only one of the C-type splints needs to be driven to rotate, and the other symmetrical C-type splint will achieve synchronous rotation through the meshing of gears, thereby realizing the disengagement of the lifting and reduction structure. This not only simplifies the operating process and improves surgical efficiency, but also ensures the stability and accuracy of the C-type splints during the adjustment process, further enhancing the applicability of the fusion device in minimally invasive spinal surgery.

[0012] Furthermore, one of the gears is fixedly connected to a rotating plate at the center, and the rotating plate is slidably connected to a push column at one end away from the gear, and the push column is fixedly connected to a push plate at one end away from the rotating plate, and an M-shaped spring piece is fixedly connected to the middle of the push plate, and the M-shaped spring piece is fixedly connected to a concave support block at one end away from the push plate, and the push plate is located inside the concave support block and is slidably connected laterally, and a first elliptical plate is rotatably connected between the two push plates, a second cross missing ring is fixedly connected to one side of the middle of the first elliptical plate, and the meshing end of the second cross missing ring is rotatably connected to the concave support block, the second cross missing ring is located below the rotating ring, and the meshing end of the second cross missing ring is slidably connected to a second cross rotating rod.

[0013] Through the above technical solution, the M-shaped spring clip on the push plate plays a role of buffering and resetting. When the push plate is subjected to external force, the M-shaped spring clip can deform to absorb the external force, and reset the push plate through its elastic restoring force after the external force disappears. The second cross missing ring can rotate within a certain range and realize relative movement with the concave support block through the meshing relationship with the second cross rotating rod.

[0014] Furthermore, the arc piece is fixedly connected with a plurality of limit plates on both sides of the surface of one end close to the concave support block, the limit plates are fitted with the corners of the concave support block, and two grabbing support strips are fixedly connected to the middle of the arc piece surface, the grabbing support strips are fitted with the surface of the concave support block, and the two sides of the grabbing support strips are rotatably engaged with two C-shaped clamps.

[0015] Through the above technical solution, the design of the limit plate enables the position of the lifting structure on the arc piece to be fixed, avoiding displacement or shaking during use and improving the stability of the overall structure. The setting of the grabbing support bar facilitates the operation and control of the arc piece. The user can hold the grabbing support bar through the C-shaped splint to conveniently move or adjust the position of the lifting structure, which not only improves the convenience of operation, but also enhances the flexibility and adaptability of the fusion device.

[0016] Furthermore, two arc-shaped slide grooves are fixedly connected to the bottom end of the support cabin, and side slide grooves are arranged on both sides of the support cabin.

[0017] Through the above technical scheme, the design of the arc-shaped slide groove and the side slide groove provides guidance and support for the movement of the lifting structure. The arc-shaped slide groove can guide the lifting structure to move in an arc-shaped trajectory inside the support cabin, so that the lifting structure can rise or fall smoothly while maintaining the relative position relationship with the concave support block. The side slide groove limits the horizontal movement range of the lifting structure, preventing the lifting structure from shifting or shaking during movement, further improving the stability and reliability of the overall structure, not only making the movement of the lifting structure more precise and controllable, but also enhancing the stability and safety of the fusion device during surgery.

[0018] Furthermore, the four corner positions on both sides of the extension cabin are respectively fixedly connected with top corner protrusions, and the top corner protrusions are meshed and slidably connected with the side slide grooves, the upper and lower ends of the extension cabin are fixedly connected with long slide grooves, one side of the middle part of the extension cabin is fixedly connected with a mounting plate, the middle part of the extension cabin is fixedly connected with a fixed rotating shaft, and two friction turntables are rotatably connected to both sides of the middle of the fixed rotating shaft, and the two friction turntables are fixedly connected with round head struts at one end away from each other, and the two round head struts are staggered and symmetrically arranged, and the two ends of the round head struts are fixedly connected with connecting shafts, and the connecting shafts are meshed and slidably connected with the arc slide grooves.

[0019] Through the above technical solution, the meshing sliding connection design of the top corner protrusion and the side slide groove makes the movement of the extension cabin in the support cabin more stable and controllable. The design of the fixed shaft and two friction turntables enables the extension cabin to rotate or adjust the angle as needed during the movement, thereby ensuring the stability and safety of the fusion device during the operation.

[0020] Furthermore, two second clamps are slidably connected on both sides between the two long slide grooves, a sliding rod is fixedly connected between the upper and lower ends of the two second clamps, a first clamp is slidably connected through the middle of the two sliding rods, the first clamp and the second clamp close to the spring are located on both sides of the friction turntable, and a friction groove is fixedly connected to the middle of the second clamp close to the friction turntable and the middle of the first clamp respectively.

[0021] Through the above technical solution, the two second clamping plates and the first clamping plate can achieve a stable clamping effect under the action of the friction turntable through the design of the sliding rod and the friction groove, further enhancing the stability and reliability of the fusion device after the operation.

[0022] Furthermore, a spring is provided on the surface of the sliding rod, and the spring is located away from the first clamping plate and the second clamping plate, and a second elliptical plate is provided between the springs, and the second elliptical plate is slidingly fitted with the first clamping plate and the second clamping plate respectively, and a pushing plate is fixedly connected to the middle part of the second elliptical plate, and the pushing plate is rotatably connected to the surface of the extension cabin, and a cylinder is fixedly connected to the outer ring of the pushing plate through the surface, and the cylinder is slidably fitted with the inclined groove.

[0023] Through the above technical solution, the design of the spring and the second elliptical plate can be reset during the clamping process of the first splint and the second splint, realizing the rotation and fixation of the friction turntable, ensuring the stability and reliability of the clamping effect, not only improving the adaptability and flexibility of the fusion device after the operation, but also greatly enhancing its practicality and safety in minimally invasive surgery.

[0024] The beneficial effects of the present invention are as follows: 1. The present invention adopts structures such as a support cabin and an extension cabin, wherein the arc-shaped slide groove and the side slide groove arranged inside the support cabin provide precise guidance and support for the movement of the extension cabin, thereby ensuring the stability and reliability of the extension cabin during the movement. The design of the extension cabin is more flexible, and it realizes stable movement and high fixation in the support cabin through the meshing sliding connection between the top corner protrusion and the side slide groove, and the rotational connection between the fixed shaft and the two friction turntables, thereby being able to adapt to different surgical needs and ensuring the success rate and safety of the operation.

[0025] 2. The present invention uses the design of the reduction mechanism of each structure to enable the fusion device to accurately reduce the spine during surgery, effectively avoiding the problem of inaccurate reduction that may occur in traditional surgery. This design not only improves the accuracy of the surgery, but also greatly shortens the operation time, reduces the patient's pain and surgical risks. At the same time, the adjustability of the reduction mechanism enables the fusion device to adapt to the spinal morphology and surgical needs of different patients, further enhancing its applicability and flexibility in minimally invasive spinal surgery.

[0026] 3. The present invention simplifies the surgical process and reduces the complexity of surgical operations, thereby shortening the operation time by providing a removable lifting structure, namely a concave support block and a triangular top block. This means that for patients, it reduces the exposure time on the operating table, reduces the risk of anesthesia and infection. For some surgeons with relatively less experience, the surgical operation is more intuitive and simple, and the doctor can focus more on key steps such as implantation and fixation of the fusion device, thereby improving the success rate of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a first structural schematic diagram of the present invention; Figure 2 is a second structural schematic diagram of the present invention; Figure 3 is a schematic diagram of the lifting structure of the present invention from a first viewing angle; Figure 4 is a schematic diagram of the lifting structure of the present invention from a second viewing angle; Figure 5 It is a schematic diagram of the structure of the concave support block of the present invention; Figure 6 It is an exploded schematic diagram of the triangular top block structure of the present invention; Figure 7 is an exploded schematic diagram of a first cross-rotating rod structure of the present invention; Figure 8 It is a schematic diagram of a first fixed structure of the lifting mechanism of the present invention; Fig. 9 is a schematic diagram of a second fixed structure of the lifting mechanism of the present invention; Fig.10It is a schematic diagram of the arc sheet and extension cabin structure of the present invention; Fig.11 It is a schematic diagram of the internal structure of the extension cabin of the present invention; Fig.12 It is a schematic diagram of the extension cabin structure of the present invention; Fig.13 is a schematic cross-sectional view of the extension cabin structure of the present invention; Fig.14 is a first structural schematic diagram of the extended structure of the present invention; Fig.15 It is a second structural schematic diagram of the extended structure of the present invention.

[0028] Figure numerals: 1, arc piece; 101, limit plate; 102, grab support bar; 2, friction convex piece; 3, support cabin; 301, arc slide; 302, side slide; 4, concave support block; 401, inclined groove; 402, swivel; 403, first cross missing ring; 404, second cross missing ring; 405, threaded rod; 406, first elliptical plate; 407, push plate; 408, push column; 409, swivel plate; 410, rotating shaft; 411, C-type clamp; 412, gear; 413, M-type spring; 5, first cross swivel Rod; 6, second cross rotating rod; 7, extension cabin; 701, push plate; 702, cylinder; 703, top corner protrusion; 704, mounting plate; 705, long slide groove; 706, connecting shaft; 707, round head support rod; 708, slide rod; 709, friction slot; 710, second elliptical plate; 711, first clamping plate; 712, spring; 713, second clamping plate; 714, friction turntable; 715, fixed rotating shaft; 8, triangular top block; 801, ring groove; 802, long groove; 803, threaded sleeve; 804, limit block. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] like Figures 1 to 15 As shown, a minimally invasive spinal endoscopic reduction fusion device of the present embodiment comprises two symmetrically arranged arc pieces 1, the surfaces of the ends of the two arc pieces 1 away from each other are fixedly connected with friction protrusions 2, the two sides of the ends of the arc pieces 1 away from the friction protrusions 2 are fixedly connected with support cabins 3, the inner sides of the support cabins 3 are penetrated and slidably connected with extension cabins 7, a concave support block 4 is arranged between the two arc pieces 1, and a triangular top block 8 is slidably connected to the middle of the concave support block 4.

[0031] like Figures 3 to 5As shown, the bottom surface of the concave support block 4 is fitted with one of the arc pieces 1, and inclined grooves 401 are arranged on both sides of one end of the concave support block 4. A rotating ring 402 is rotatably connected to the middle of the surface of the concave support block 4 on the side away from the inclined groove 401, and a first cross missing ring 403 is rotatably connected to the inner side of the rotating ring 402. The first cross missing ring 403 is rotatably connected to the first cross rotating rod 5 through the end thereof, and a threaded rod 405 is fixedly connected to the end of the first cross missing ring 403 away from the first cross rotating rod 5. The meshing and sliding connection between the first cross missing ring 403 and the first cross rotating rod 5 realizes the precise adjustment of the first cross rotating rod 5. The arrangement of the threaded rod 405 further increases the stability and firmness of the connection, making the entire fusion device safer and more reliable during use. It not only improves the resetting effect of the fusion device, but also greatly enhances its applicability in minimally invasive surgery.

[0032] like Figure 5 As shown, the top surface of the triangular top block 8 is fitted with another arc piece 1, an annular groove 801 is provided in the middle of the triangular top block 8, and long grooves 802 are provided on both sides of the inner wall of the annular groove 801 close to 8, a threaded sleeve 803 is slidably connected to the inner side of the annular groove 801, and limiting blocks 804 are fixedly connected to both sides of the threaded sleeve 803 respectively, the limiting blocks 804 are meshed and slid with the long groove 802, the inner side of the threaded sleeve 803 is threadedly connected to the threaded rod 405, and the threaded connection between the threaded sleeve 803 and the threaded rod 405 realizes the precise adjustment of the threaded sleeve 803, so that the reduction effect of the entire fusion device is more accurate and reliable.

[0033] like Figures 7 to 9 As shown, a plurality of C-shaped clamps 411 are respectively provided on both sides of the bottom end of the concave support block 4, and the plurality of C-shaped clamps 411 are symmetrically arranged in pairs. A rotating shaft 410 is fixedly connected to the top of the C-shaped clamp 411, and the rotating shaft 410 is rotatably connected to the concave support block 4. Gears 412 are respectively fixedly connected to both ends of the rotating shaft 410, and the gears 412 on the two symmetrically arranged C-shaped clamps 411 mesh with each other, thereby realizing the synchronous rotation of the C-shaped clamps 411. When it is necessary to adjust the angle of the C-shaped clamps 411, it is only necessary to drive one of the C-shaped clamps 411 to rotate, and the other C-shaped clamp 411 symmetrical to it will realize synchronous rotation through the meshing action of the gear 412, thereby realizing the disengagement of the lifting and resetting structure.

[0034] like Figures 7 to 9As shown, a rotating plate 409 is fixedly connected to the center of one of the gears 412, and a push column 408 is meshed and slidably connected to the rotating plate 409 at one end away from the gear 412, and a push plate 407 is fixedly connected to the push column 408 at one end away from the rotating plate 409, and an M-shaped spring piece 413 is fixedly connected to the middle of the push plate 407, and the M-shaped spring piece 413 is fixedly connected to the concave support block 4 at one end away from the push plate 407, and the push plate 407 is located inside the concave support block 4 and is slidably connected laterally, and the two push plates 407 are rotatably connected. There is a first elliptical plate 406, and a second cross missing ring 404 is fixedly connected to one side of the middle of the first elliptical plate 406. The meshing end of the second cross missing ring 404 is rotatably connected to the concave support block 4. The second cross missing ring 404 is located below the rotating ring 402. The meshing end of the second cross missing ring 404 is slidably connected to the second cross rotating rod 6. The second cross missing ring 404 can rotate within a certain range and realize relative movement with the concave support block 4 through the meshing relationship with the second cross rotating rod 6.

[0035] like Figure 10 to Figure 11 As shown, a plurality of limit plates 101 are fixedly connected to both sides of the surface of one end of the arc piece 1 close to the concave support block 4, and the limit plates 101 fit in with the corners of the concave support block 4. Two grabbing support bars 102 are fixedly connected to the middle of the surface of the arc piece 1, and the grabbing support bars 102 fit in with the surface of the concave support block 4. The two sides of the grabbing support bars 102 are rotatably engaged with two C-shaped clamping plates 411. The design of the limit plates 101 fixes the position of the lifting structure on the arc piece 1, avoids displacement or shaking during use, and improves the stability of the overall structure.

[0036] like Figure 10 to Figure 11 As shown, two arc-shaped slide grooves 301 are fixedly connected to the bottom end of the support cabin 3. The design of the arc-shaped slide grooves 301 provides guidance and support for the movement of the lifting structure. The arc-shaped slide grooves 301 can guide the lifting structure to move in an arc-shaped trajectory inside the support cabin 3, so that the lifting structure can rise or fall smoothly while maintaining a relative position relationship with the concave support block 4. Side slide grooves 302 are arranged on both sides of the support cabin 3. The side slide grooves 302 limit the movement range of the lifting structure in the horizontal direction, prevent the lifting structure from deflecting or shaking during the movement, and further improve the stability and reliability of the overall structure.

[0037] like Fig.12As shown, the four corners on both sides of the extension cabin 7 are fixedly connected with top corner protrusions 703 respectively, and the top corner protrusions 703 are meshed and slidably connected with the side slide grooves 302, and the upper and lower ends of the extension cabin 7 are fixedly connected with long slide grooves 705, and a mounting plate 704 is fixedly connected to one side of the middle part of the extension cabin 7, and a fixed rotating shaft 715 is fixedly connected to the middle part of the extension cabin 7, and two friction rotating disks 714 are rotatably connected to the middle two sides of the fixed rotating shaft 715, and the two friction rotating disks 714 are fixedly connected with a round head support rod 707 at one end away from each other, and the two round head support rods 707 are staggered and symmetrically arranged, and the two ends of the round head support rod 707 are fixedly connected with connecting shafts 706, and the connecting shaft 706 is meshed and slidably connected with the arc slide groove 301. The design of the fixed rotating shaft 715 and the two friction rotating disks 714 enables the extension cabin 7 to rotate or adjust the angle as needed during the movement, thereby ensuring the stability and safety of the fusion device during the operation.

[0038] like Figures 13 to 15 As shown, two second clamping plates 713 are slidably connected on both sides between the two long sliding grooves 705, and a sliding rod 708 is fixedly connected between the upper and lower ends of the two second clamping plates 713. The middle parts of the two sliding rods 708 are penetrated by a first clamping plate 711 that is slidably connected. The first clamping plate 711 and the second clamping plate 713 away from the spring 712 are located on both sides of the friction turntable 714, and the middle parts of the second clamping plate 713 close to the friction turntable 714 and the middle parts of the first clamping plate 711 are fixedly connected with friction slots 709 respectively. The two second clamping plates 713 and the first clamping plate 711 can achieve a stable clamping effect under the action of the friction turntable 714 through the design of the sliding rod 708 and the friction slot 709, thereby further enhancing the stability and reliability of the fusion device after the operation.

[0039] like Figures 13 to 15 As shown, a spring 712 is provided on the surface of the slide bar 708, and the spring 712 is located away from the first clamping plate 711 and the second clamping plate 713. A second elliptical plate 710 is provided between the spring 712, and the second elliptical plate 710 is slidably fitted with the first clamping plate 711 and the second clamping plate 713 respectively. A pushing plate 701 is fixedly connected to the middle of the second elliptical plate 710, and the pushing plate 701 is rotatably connected to the surface of the extension cabin 7, and a cylinder 702 is fixedly connected to the outer ring of the pushing plate 701 through the surface, and the cylinder 702 is slidably fitted with the inclined groove 401. The design of the spring 712 and the second elliptical plate 710 can be reset during the clamping process of the first clamping plate 711 and the second clamping plate 713, so as to realize the rotation and fixation of the friction turntable 714, thereby ensuring the stability and reliability of the clamping effect, which not only improves the adaptability and flexibility of the fusion device in the hand, but also greatly enhances its practicality and safety in minimally invasive surgery.

[0040] The working principle of this embodiment is as follows: When in use, the medical staff will first implant the fusion device into the part of the spine that needs to be fused through the patient's minimally invasive incision, align the two arc pieces 1 with the two sides of the patient's spine, and increase the friction between the arc piece 1 and the patient's skin through the friction convex piece 2 to prevent the arc piece 1 from sliding during the operation. Then, the medical staff can operate the first cross rotating rod 5 to engage and slide with the first cross missing ring 403, driving the threaded rod 405 to rotate. Since the threaded sleeve 803 is threadedly connected to the threaded rod 405, the rotation of the threaded rod 405 will drive the threaded sleeve 803 to slide inward along the annular groove 801, and then push the triangular top block 8 to move inward, so that the two arc pieces 1 are away from each other, and the patient's spine is supported and fixed.

[0041] When the two arc pieces 1 are moving away from each other, since the arc-shaped slide groove 301 inside thereof is slidably connected with the round-head support rod 707 through the connecting shaft 706, the two round-head support rods 707 will move synchronously with the opening of the arc piece 1, thereby driving the extension cabin 7 to slide stably and adjust the angle inside the support cabin 3. The top corner protrusion 703 of the extension cabin 7 is guided by the side slide groove 302, ensuring the precise guidance and stable support of the extension cabin 7 during the movement.

[0042] When the two arc pieces 1 are opened, the medical staff can rotate, engage and slide the second cross rotating rod 6 with the second cross missing ring 404 to push the first elliptical plate 406 to rotate, thereby pushing the push plate 407 to move and move away from each other, and then drive the rotating plate 409 and the push column 408 to move, and the gears 412 on the C-shaped clamping plate 411 are engaged and rotated with each other, and the two C-shaped clamping plates 411 rotate symmetrically to release the clamped grabbing support bar 102. At this moment, the concave support block 4 can be freely extracted, and the concave support block 4 and the triangular top block 8 are pulled out of the two arc pieces 1.

[0043] Since the cylinder 702 is slidingly fitted with the inclined groove 401, the position of the cylinder 702 is fixed. When the concave support block 4 and the triangular top block 8 are pulled out, the cylinder 702 is separated from the inclined groove 401, and the cylinder 702 rotates with the push plate 701. Since the push plate 701 is fixedly connected to the second elliptical plate 710, the second elliptical plate 710 rotates with it. The second elliptical plate 710 changes from a short end to a long end and contacts with the first clamping plate 711 and the second clamping plate 713 close to the spring 712. With the assistance of the spring 712, the first clamping plate 711 and the second clamping plate 713 close to the spring 712 move away from each other. Since the two second clamping plates 713 are fixed by the sliding rod 708 The first clamping plate 711 is connected, and both ends of the first clamping plate 711 are slidably connected with the sliding rod 708. Therefore, when the second clamping plate 713 and the first clamping plate 711 arranged on both sides of the second elliptical plate 710 move away from each other, the second clamping plate 713 at the other end and the first clamping plate 711 move closer to each other. Since the friction groove 709 is fixedly connected to the middle part of the side where the second clamping plate 713 away from the second elliptical plate 710 and the first clamping plate 711 move closer to each other, and the friction rotating disk 714 is located between the first clamping plate 711 and the second clamping plate 713, the friction groove 709 is close to the two friction rotating disks 714, and the friction groove 709 is slidably engaged with the two friction rotating disks 714 to fix the two friction rotating disks 714.

[0044] Since the two round-headed struts 707 are fixedly connected to the two friction turntables 714 respectively, when the two friction turntables 714 are fixed, the two round-headed struts 707 are also fixed accordingly, ensuring the stable position of the extension cabin 7 during the operation. Therefore, medical staff can flexibly adjust the position and length of the extension cabin 7 according to the progress of the operation and the needs of spinal fusion, ensuring that the fusion device can accurately act on the spine to achieve the best fusion effect.

[0045] After the operation is over, the medical staff can perform the reverse operation, that is, first send the concave support block 4 into the arc piece 1 through the second cross rotating rod 6, and the inclined grooves 401 on both sides of the concave support block 4, due to their inclined structure, push the push plate 701 to rotate during the sliding engagement with the cylinder 702, and the second elliptical plate 710 fixedly connected to the push plate 701 rotates accordingly, and the second elliptical plate 710 changes from the long end to the short end and contacts the first clamping plate 711 and the second clamping plate 713 close to the spring 712, and under the action of the spring 712, the first clamping plate 711 and the second clamping plate 713 located on both sides of the second elliptical plate 710 are 3 are close to each other, while the first clamping plate 711 and the second clamping plate 713 on both sides of the friction rotating disk 714 are away from each other, the two friction slots 709 are disengaged from the two friction rotating disks 714, the two friction rotating disks 714 are released, and the two fixed round head support rods 707 also rotate accordingly, so that the two arc plates 1 gradually approach and close, the second cross rotating rod 6 and the second cross missing ring 404 are meshed and slid, so that the first elliptical plate 406 rotates in the opposite direction, and the M-shaped spring piece 413 drives the push plate 407 and the C-shaped clamping plate 411 to reset, re-clamp the grasping support bar 102, and the fusion device is taken out of the patient's body through the second cross rotating rod 6.

[0046] The minimally invasive spinal endoscopic reduction fusion device of the present invention achieves precise support and fixation of the spine during minimally invasive surgery through its unique design structure and working principle, while providing flexible adjustment space to meet the surgical needs of different patients.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A minimally invasive spinal endoscopic repositioning fusion cage, comprising two symmetrically arranged arc pieces (1), characterized in that: The surfaces of the ends of the two arc plates (1) that are away from each other are fixedly connected with friction protrusions (2); the two sides of the ends of the arc plates (1) that are away from the friction protrusions (2) are fixedly connected with support cabins (3); an extension cabin (7) is slidably connected through the inner sides of the support cabins (3); a concave support block (4) is provided between the two arc plates (1); and a triangular top block (8) is slidably connected to the middle of the concave support block (4); The bottom surface of the concave support block (4) is fitted with one of the arc pieces (1); inclined grooves (401) are arranged on both sides of one end of the concave support block (4); a rotating ring (402) is rotatably connected to the middle of the surface of the concave support block (4) away from the inclined groove (401); a first cross missing ring (403) is rotatably connected to the inner side of the rotating ring (402); a first cross missing ring (403) is rotatably connected to the through end of the first cross missing ring (403) in meshing and sliding connection with a first cross rotating rod (5); and a threaded rod (405) is fixedly connected to the end of the first cross missing ring (403) away from the first cross rotating rod (5); The top surface of the triangular top block (8) is fitted with another arc piece (1); a ring groove (801) is provided in the middle of the triangular top block (8); long grooves (802) are provided on both sides of the inner wall of the ring groove (801) close to the triangular top block (8); a threaded sleeve (803) is slidably connected to the inner side of the ring groove (801); both sides of the threaded sleeve (803) are respectively fixedly connected to limit blocks (804); the limit blocks (804) are meshed and slidably engaged with the long groove (802); and the inner side of the threaded sleeve (803) is threadedly connected to the threaded rod (405).

2. The minimally invasive spinal fusion device according to claim 1, characterized in that: A plurality of C-shaped clamping plates (411) are respectively arranged on both sides of the bottom end of the concave support block (4), and the plurality of C-shaped clamping plates (411) are symmetrically arranged in pairs. A rotating shaft (410) is fixedly connected to the top end of the C-shaped clamping plates (411), and the rotating shaft (410) is rotatably connected to the concave support block (4). Gears (412) are respectively fixedly connected to both ends of the rotating shaft (410), and the gears (412) on the two symmetrically arranged C-shaped clamping plates (411) mesh with each other.

3. The minimally invasive spinal fusion device according to claim 2, characterized in that: A rotating plate (409) is fixedly connected to the center of one of the gears (412); an end of the rotating plate (409) away from the gear (412) is meshingly and slidably connected to a push column (408); an end of the push column (408) away from the rotating plate (409) is fixedly connected to a push plate (407); an M-shaped spring sheet (413) is fixedly connected to the middle of the push plate (407); an end of the M-shaped spring sheet (413) away from the push plate (407) is fixedly connected to the concave support block (4); and the push plate (407) is positioned A first elliptical plate (406) is rotatably connected inside the concave support block (4) and is slidably connected thereto. A second cross missing ring (404) is fixedly connected to one side of the middle of the first elliptical plate (406). The meshing end of the second cross missing ring (404) is rotatably connected to the concave support block (4). The second cross missing ring (404) is located below the rotating ring (402). The meshing end of the second cross missing ring (404) is slidably connected to a second cross rotating rod (6).

4. The minimally invasive spinal fusion device according to claim 1, characterized in that: A plurality of limit plates (101) are fixedly connected to the two sides of the surface of one end of the arc piece (1) close to the concave support block (4), and the limit plates (101) fit in with the corners of the concave support block (4). Two gripping support strips (102) are fixedly connected to the middle of the surface of the arc piece (1), and the gripping support strips (102) fit in with the surface of the concave support block (4). The two sides of the gripping support strip (102) are rotatably engaged with two C-shaped clamping plates (411).

5. The minimally invasive spinal fusion device according to claim 1, characterized in that: Two arc-shaped slide grooves (301) are fixedly connected to the bottom end of the support cabin (3), and side slide grooves (302) are arranged on both sides of the support cabin (3).

6. The minimally invasive spinal fusion device according to claim 1, characterized in that: Four corner positions on both sides of the extension cabin (7) are respectively fixedly connected with top corner protrusions (703), and the top corner protrusions (703) are meshed and slidably connected with the side slide grooves (302). The upper and lower ends of the extension cabin (7) are fixedly connected with long slide grooves (705), and one side of the middle of the extension cabin (7) is fixedly connected with a mounting plate (704). The middle of the extension cabin (7) is fixedly connected with a fixed shaft (715), and two friction rotating disks (714) are rotatably connected to the two sides of the middle of the fixed shaft (715). The two friction rotating disks (714) are fixedly connected with round head support rods (707) at one end away from each other. The two round head support rods (707) are staggered and symmetrically arranged. The two ends of the round head support rods (707) are fixedly connected with connecting shafts (706), and the connecting shafts (706) are meshed and slidably connected with the arc-shaped slide grooves (301).

7. The minimally invasive spinal fusion device according to claim 6, characterized in that: Two second clamping plates (713) are slidably connected on both sides between the two long sliding grooves (705), a sliding rod (708) is fixedly connected between the upper and lower ends of the two second clamping plates (713), and a first clamping plate (711) is slidably connected through the middle of the two sliding rods (708). The first clamping plate (711) and one of the second clamping plates (713) are located on both sides of the friction rotating disk (714), and a friction slot (709) is fixedly connected to the middle of the second clamping plate (713) on the side close to the friction rotating disk (714) and the middle of the first clamping plate (711).

8. The minimally invasive spinal fusion device according to claim 7, characterized in that: A spring (712) is arranged on the surface of the slide bar (708), and the spring (712) is located away from the first clamping plate (711) and the second clamping plate (713). A second elliptical plate (710) is arranged between the spring (712), and the second elliptical plate (710) is slidably fitted with the first clamping plate (711) and the second clamping plate (713) respectively. A pushing plate (701) is fixedly connected to the middle part of the second elliptical plate (710), and the pushing plate (701) is rotatably connected to the surface of the extension cabin (7). A cylinder (702) is fixedly connected to the outer ring of the pushing plate (701) through the surface, and the cylinder (702) is slidably fitted with the inclined groove (401).

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