Pedicle screw placement position visible probing and stripping device

Abstract

The invention relates to the technical field of pedicle surgery auxiliary equipment, solves the problems of low reliability or high manufacturing cost, radiation and the like in the prior art, and discloses a pedicle screw placement position visible probing and stripping device which comprises a handle, a supporting rod, a reflecting mirror and a camera module. The other end of the supporting rod is bent after extending away from the handle; the reflector is connected to the bent end of the supporting rod. The reflecting surface of the reflector faces the handle; the camera module is arranged on the handle to receive the reflected light of the reflector. The supporting rod can be operated through the handle to feed the reflecting mirror into the pedicle screw placement position, and the reflecting mirror reflects light to the camera module on the handle. Visual exploration of the implantation position of the pedicle screw is achieved, the accuracy and safety of an operation are improved, and the operation risk is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pedicle surgery auxiliary equipment, and in particular to a pedicle screw insertion position visual detection and stripping device. Background Art

[0002] Spondylolisthesis is when the bones of the spine, or vertebrae, slip relative to one another, most commonly between the lumbar and sacral spine, but can also occur in the lower lumbar region. Spondylolisthesis can cause the spine to misalign and increase the risk of nerve entrapment. Nerves travel within the spinal canal, which is bounded by the vertebrae, and their roots protrude through curved openings in the sides of the vertebrae called foramina. Patients may experience both axial back pain and radicular pain.

[0003] Pedicle screw fusion is one of the most effective treatments available. In pedicle screw fusion, the screw is guided into the pedicle portion and the body of the adjacent vertebra, and then the rod is passed through the intervertebral disc space and connected to the screw. The screw and rod keep the adjacent vertebrae stationary relative to each other and allow the bone graft placed in the intervertebral body (intervertebral disc) space or the posterolateral space to grow into solid bone. Pedicle screws and rods are metal, usually titanium (Ti) alloy. Recently, the rod is made of a minimally flexible polymer called polyetheretherketone (PEEK).

[0004] Currently, in pedicle screw fusion surgery, the assessment of the position of the implanted screw is mainly based on C-arm fluoroscopy or intraoperative three-dimensional imaging.

[0005] Among them, C-arm fluoroscopy includes standard anteroposterior fluoroscopy, which mainly evaluates whether the screw is biased inside / outside, and can also evaluate up / down. Standard lateral fluoroscopy can evaluate whether the screw is biased below / upper, and the length, but cannot evaluate whether the screw is biased inside / outside. And oblique fluoroscopy can observe the target pedicle in both sagittal and axial positions. The misplacement detection rate of relying on C-arm fluoroscopy images during surgery is about 70%, and relying solely on C-arm fluoroscopy is not very reliable.

[0006] Intraoperative 3D imaging includes intraoperative CT, O-arm + navigation, 3D C-arm and other technologies, which have higher accuracy and faster speed in pedicle screw placement and reduce screw-related complications. However, it may increase radiation exposure time, may harm the health of patients and surgeons, and is relatively expensive.

[0007] If the misplacement of the screws cannot be discovered in time during the operation, after the patient completes the suturing and enters the recovery period, a series of complications will occur due to the misplacement of the screws. At this time, another surgery will be required to re-place the misplaced screws, which is a great blow and harm to the patient both physically and mentally.

[0008] Therefore, how to timely, accurately and safely observe the screw placement status during surgery is an urgent problem to be solved in pedicle screw fusion. Summary of the invention

[0009] In order to improve the defects of the prior art such as low reliability, high cost, radiation, etc., and to provide a solution that can timely, accurately and safely observe the screw insertion status during surgery, the present application provides a pedicle screw insertion position visual exploration and stripping device.

[0010] The following technical solutions are adopted: A visual exploration and stripping device for the insertion position of a pedicle screw comprises a handle, a support rod, a reflector and a camera module; one end of the support rod is connected to the handle, and the other end extends away from the handle and then bends; the reflector is connected to the bent end of the support rod; the reflective surface of the reflector faces the handle; and the camera module is arranged on the handle to receive the light reflected by the reflector.

[0011] By adopting the above technical solution, the reflector is sent to the pedicle screw insertion position by operating the support rod through the handle, and the reflector reflects light to the camera module on the handle. The visual exploration of the pedicle screw insertion position is realized, the accuracy and safety of the operation are improved, and the surgical risk is reduced.

[0012] Optionally, the reflector includes a mirror seat and a lens; the mirror seat is rotatably connected to the support rod; the lens is arranged in the mirror seat; The visual detection stripping device also includes a control component for controlling the rotation of the mirror seat.

[0013] By adopting the above technical solution, the reflection angle of the lens can be adjusted by adjusting the rotation of the mirror seat through the control component, and the reflection direction of the reflector can be adjusted according to needs, thereby expanding the detection range and improving the flexibility and applicability of the operation.

[0014] Optionally, the lens is a convex lens.

[0015] By adopting the above technical solution, the convex lens has a wide-angle reflection characteristic, which can capture a wider field of view, improve the visualization of the operation, and help doctors to more accurately determine the insertion position of the pedicle screw.

[0016] Optionally, the control component includes a transmission rope, a driving wheel and a driven wheel; the two ends of the transmission rope are respectively wrapped around the driving wheel and the driven wheel and then connected end to end; the transmission rope is in a taut state; the support rod is rotatably connected to the mirror base via a rotating shaft, the driven wheel is coaxial with the rotating shaft and connected to the mirror base; the driving wheel is rotatably connected to the handle.

[0017] By adopting the above technical solution, by rotating the driving wheel on the handle, the transmission rope drives the driven wheel and the mirror seat to rotate, thereby adjusting the angle of the reflector, providing a simple and effective method for controlling the angle of the reflector, which is easy to operate and highly reliable.

[0018] Optionally, the number of turns of the transmission rope is greater than or equal to one.

[0019] By adopting the above technical solution, the number of turns of the transmission rope is increased, the tension and stability of the transmission rope are improved, the transmission capacity of the control component is enhanced, and the angle adjustment of the reflector is made more stable and reliable.

[0020] Optionally, it further comprises a plurality of tensioning piles which are arranged at intervals on the support rod; the side close to the connecting line of the driving wheel and the driven wheel is taken as the inner side, and the transmission rope is bundled and abuts against the outer sides of the plurality of tensioning piles.

[0021] By adopting the above technical solution, the transmission rope is kept in a taut state under the action of the tension pile, thereby improving the transmission efficiency, ensuring the stability and transmission efficiency of the transmission rope, and further improving the reliability of the control component.

[0022] Optionally, the camera module includes a lens, an imaging device, and a transmission unit for transmitting an image signal generated by the imaging device to a host; the imaging device is disposed in the handle; and the lens passes through the handle toward the reflector.

[0023] By adopting the above technical solution, the light reflected by the reflector enters the imaging device through the lens, and the imaging device converts the optical signal into an electrical signal, which is sent to the host for display through the transmission unit. Real-time transmission and display of images are achieved, providing doctors with a clear surgical field of view, which helps the smooth progress of the operation.

[0024] Optionally, the transmission unit includes a telecommunication interface and a transmission cable, wherein one end of the telecommunication interface is connected to the imaging device and the other end passes through the handle; and the transmission cable is detachably connected to the telecommunication interface.

[0025] By adopting the above technical solution, the imaging device is connected to the host through the telecommunication interface and the transmission cable to realize signal transmission, which provides a flexible and reliable connection method, facilitates the installation and removal of the device, and improves the usability of the device.

[0026] Optionally, the visual detection and stripping device also includes a flushing pipeline; the flushing pipeline passes through the handle and is arranged along the support rod; the flushing pipeline extends to between the reflector and the camera module, and is forked to form two branches, one of which is directed toward the reflector and the other is directed toward the camera end of the camera module.

[0027] By adopting the above technical solution, flushing liquid (physiological saline) is sprayed to the reflector and camera module through the flushing pipeline to remove dirt and blood in the field of view, thereby maintaining a clear surgical field of view, reducing interference factors during the operation, and improving the efficiency and safety of the operation.

[0028] Optionally, an injection interface is provided at one end of the flushing pipeline, and the injection interface passes through the handle.

[0029] By adopting the above technical solution, the flushing liquid source is connected through the injection interface to inject the flushing liquid into the flushing pipeline, which provides a convenient and fast flushing liquid injection method and further improves the usability and practicality of the device.

[0030] In summary, the present application includes at least one of the following beneficial effects: 1. Improved surgical accuracy and safety: Through visual exploration and adjustment of the reflector angle, doctors can more accurately determine the placement of pedicle screws and reduce surgical risks.

[0031] 2. Enhanced flexibility and applicability of the equipment: The design of adjustable reflector angle and flushing pipeline enables the equipment to adapt to different surgical needs, improving the flexibility and applicability of the surgery.

[0032] 3. Improved surgical efficiency and reliability: The real-time transmission of images, cleaning function and other designs ensure the clarity of the surgical field and the stable operation of the equipment, improving the efficiency and reliability of the surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 yes Figure 1 Schematic diagram of some structures; Figure 3 It is a schematic diagram of the front section structure of this embodiment; Figure 4 1 is a schematic diagram of the top view of the front section of the present embodiment; Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at point A; Figure 6 is a schematic diagram of a side cross-sectional structure of this embodiment; Figure 7 yes Figure 6 A schematic diagram of the enlarged structure at B; Figure 8 yes Figure 6 A schematic diagram of the enlarged structure at C; Fig. 9 yes Figure 6 Enlarged structural diagram at D.

[0034] Explanation of the reference numerals: 1. handle; 11. through hole; 2. support rod; 21. rotating shaft; 22. support block; 3. reflector; 31. mirror holder; 311. connecting protrusion; 32. lens; 4. camera module; 41. lens; 42. imaging device; 43. telecommunication interface; 5. control assembly; 51. transmission rope; 52. driving wheel; 521. annular groove; 53. driven wheel; 54. tensioning pile; 541. end block; 6. flushing pipeline; 61. branch pipe; 62. injection interface. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 To Attachment Fig. 9 This application is described in further detail.

[0036] During the process of setting screws in pedicle screw fusion surgery, it is necessary to comprehensively judge the position, angle, depth and other factors of the inserted screws relative to the pedicles during the operation. Due to the obstruction of the visual field by the shape of the pedicles and the limitation of the visual angle by the size of the surgical incision, the visibility during screw insertion is low. The existing technology is based on two schemes: C-arm fluoroscopy or intraoperative three-dimensional imaging. Among them, the misplacement detection rate of C-arm fluoroscopy is about 70%, and it is not very reliable to rely solely on C-arm fluoroscopy. The use of three-dimensional imaging for angiography during surgery is not only expensive, but also the long-term exposure to three-dimensional imaging radiation during surgery, which poses potential risks to the health of patients and doctors. Therefore, there is an urgent need for a solution that can observe the screw insertion status in a timely, accurate and safe manner during pedicle surgery.

[0037] To this end, the present application provides a pedicle screw insertion position visual detection and stripping device. Figure 1 and Figure 2 , which includes a handle 1, a support rod 2, a reflector 3 and a camera module 4. In this embodiment, one end of the support rod 2 is connected to the end of the handle 1, and the other end extends in a direction away from the handle 1. The end of the support rod 2 away from the handle 1 is bent or folded, and the reflector 3 is connected at the end. The reflecting surface of the reflector 3 faces the position of the handle 1, and the reflector 3 is tilted, and the angle between the reflector 3 and the support rod 2 is an obtuse angle. The diameter of the support rod 2 is much smaller than the diameter of the handle 1. Because the support rod 2 and the reflector 3 need to be inserted into the incision on the back of the patient, it is necessary to design a reduced radial projection area according to the opening of the conventional surgical incision. The camera module 4 is arranged on the handle 1, and the element of the camera module 4 for receiving light faces the reflector 3, so that the camera module 4 can receive the light reflected by the reflector 3, that is, receive the pedicle image information illuminated by the reflector 3.

[0038] The reflector 3 can form an image and change the optical path of the light penetrating into the incision. By utilizing this characteristic of the reflector 3, during the operation, the reflector 3 is inserted into the incision and the angle is controlled. The image in the reflector 3 is received by the camera module and reflected on the display device to observe the condition of the pedicle, especially the back of the pedicle and other parts that are difficult to directly observe.

[0039] Reference Figure 2 and Figure 3 , further, the handle 1 is a round hollow long rod-shaped structure. Furthermore, the shape of the handle 1 can be ergonomically optimized (for example, grooves for placing fingers are provided) to facilitate the doctor's grip. In some possible embodiments, the handle 1 exists in an L-shaped structure or an I-shaped structure, and the specific shape of the handle 1 is not overly constrained. The handle 1 can be eccentrically connected by the support rod 2, and the camera module 4 is arranged on the surface of the handle 1 in an area deviating from the support rod 2 to make the overall structure as compact as possible. In other possible embodiments, the support rod 2 and the camera module 4 can be installed separately by setting the cross-section of the handle 1 to an 8-shape.

[0040] Reference Figures 3 to 7 Further, the reflector 3 includes a mirror base 31 and a lens 32. The mirror base 31 is connected to the back of the lens 32 and half surrounds the lens 32 so that the reflective surface is exposed to the outside. The back of the lens 32 is the side away from the reflective surface of the lens 32. The mirror base 31 is rotatably connected to the support rod 2. The visual detection stripping device also includes a control component 5 for controlling the rotation of the mirror base 31.

[0041] In some possible embodiments, the mirror base 31 is fixedly connected to the support rod 2 and cannot rotate, which increases the stability of the mirror base 31, but is not adjustable, only basic functions are available, and the viewing angle is limited.

[0042] In some possible embodiments, the mirror base 31 is slidably connected to the support rod 2 , and the mirror base 31 slides along the length direction of the support rod 2 , thereby adjusting the penetration depth of the reflector 3 to provide more viewing angles.

[0043] Further, the lens 32 is selected to be a convex lens 32, which expands the visual field and allows the doctor to see a wider pedicle back visual field. In some possible embodiments, a plane mirror can be used.

[0044] Reference Figures 3 to 8Furthermore, the control assembly 5 includes a transmission rope 51, a driving wheel 52 and a driven wheel 53. The transmission rope 51 is generally a continuous structure with the ends connected. The two ends of the transmission rope 51 are respectively sleeved on the driving wheel 52 and the driven wheel 53. The transmission rope 51 is supported by the driving wheel 52 and the driven wheel 53 and is tightened. The axes of the driving wheel 52 and the driven wheel 53 are parallel. When the driving wheel 52 rotates, due to the friction force, the transmission rope 51 can be pulled to move, thereby transmitting power to the driven wheel 53 to drive the driven wheel 53 to rotate. Specifically, the transmission rope 51 abuts the driving wheel 52 along the tangent direction from one side of the driving wheel 52, and wraps around the outer peripheral side of the driving wheel 52 for at least one turn (the more the number, the greater the friction), and then extends from the other side of the driving wheel 52 along the tangent to abut the driven wheel 53, and after wrapping around the driven wheel 53 for at least one turn, it returns to the side that cuts into the driving wheel 52 to form a cycle. A rotating shaft 21 perpendicular to the length direction of the support rod 2 is fixedly provided at the end of the support rod 2. The lens holder 31 is rotatably connected to the support rod 2 through the rotating shaft 21. The driven wheel 53 is coaxially rotatably connected to the rotating shaft 21. The driven wheel 53 is fixedly connected to the lens holder 31. The driving wheel 52 is rotatably connected to the handle 1. Two mutually parallel connecting protrusions 311 are provided on the back of the lens holder 31, that is, the side away from the lens 32. The rotating shaft 21 is located between the connecting protrusions 311, and the two ends of the rotating shaft 21 are respectively inserted into the corresponding connecting protrusions 311. One end of the driven wheel 53 is fixedly connected to the inner side of one of the connecting protrusions 311, and the rotating shaft 21 coaxially penetrates the driven wheel 53. By rotating the driving wheel 52, the transmission rope 51 is transmitted to drive the driven wheel 53 to rotate at the same time, so that the lens holder 31 rotates to provide more viewing angles for observing the pedicle.

[0045] In some possible embodiments, the control component 5 can be configured to include but not limited to the following schemes: 1. An electronic driver (such as a micro motor) is provided at the rotating shaft 21, which is provided in the handle 1 through a starting unit, and the electronic driver is electrically connected to the starting unit. 2. The rotating shaft 21 is configured as a crankshaft, one end of which is rotatably connected to a connecting rod, and the connecting rod extends to the handle 1 through another rod, and a slider is provided on the handle 1 to drive the rod to slide. Alternatively, a disc is provided at the rotating shaft 21, and the disc is eccentrically connected to the connecting rod. 3. A gear is provided concentrically with the rotating shaft 21, and the rotating shaft 21 is driven at the handle 1 through a gear rack. Or it is driven by a pulley.

[0046] Reference Figure 5 and Figure 8 Furthermore, a through hole 11 is provided on the upper part of the handle 1 to communicate with the internal space, and the driving wheel 52 is rotatably connected to the handle 1, but partially extends out of the outside through the through hole 11. In order to facilitate the doctor to rotate it, a friction pattern is provided on the surface of the driving wheel 52 to increase the friction force when the doctor's fingers rotate it. The driving wheel 52 is cylindrical as a whole, and a ring groove 521 is provided in the middle of the driving wheel 52. The transmission rope 51 is stuck in the ring groove 521, thereby limiting the transmission rope 51 and preventing the transmission rope 51 from deviating.

[0047] Reference Figures 3 to 7 , further, it also includes a plurality of tensioning piles 54 arranged at intervals on the support rod 2. The tensioning piles 54 are arranged perpendicular to the support rod 2, and the tensioning piles 54 extend to the side. An end block 541 with a diameter larger than the tensioning pile 54 is arranged at one end of the tensioning pile 54 away from the support rod 2, and the end block 541 is used to limit the deviation of the transmission rope 51. With the side close to the connecting line of the driving wheel 52 and the driven wheel 53 as the inner side, the transmission rope 51 abuts against the outer sides of a plurality of tensioning piles 54 after being bundled. And at least one tensioning pile 54 is located at the bending part of the support rod 2. The transmission rope 51 is arranged and guided by the tensioning piles 54, so that the transmission rope 51 can be bundled and routed to prevent the transmission rope 51 from deviating, entangled, and causing damage to the patient's body tissue during the insertion process.

[0048] Reference Figures 6 to 9 Furthermore, the camera module 4 includes a lens 41, an imaging device 42, and a transmission unit for transmitting the image signal generated by the imaging device 42 to the host. The imaging device 42 is arranged in the handle 1. The lens 41 deviates from the center of the handle 1 and passes through the handle 1 toward the reflector 3. The lens 41 is waterproof and anti-corrosion treated. The lens 41 is connected to the imaging device 42 by telecommunication. Among them, the imaging device 42 can use a charge coupled device (CCD) or a semiconductor device (CMOS) as an image sensor.

[0049] Furthermore, the transmission unit includes a telecommunication interface 43 and a transmission cable, one end of the telecommunication interface 43 is connected to the imaging device 42, and the other end passes through the handle 1. The transmission cable is detachably connected to the telecommunication interface 43. A USB Type-C plug is provided at one end of the transmission cable, and a plug adapted to the developing device is provided at the other end. The telecommunication interface 43 uses a USB Type-C interface, and the two cooperate to take into account both power supply and data transmission.

[0050] In some possible embodiments, the transmission cable is allowed to be directly connected to the imaging device 42 and the development host and is not detachable.

[0051] In some possible embodiments, the transmission unit can be constructed by wired power supply, wireless data transmission, or wired transmission and built-in power supply. The wireless module can use technologies such as Bluetooth, WIFI, GPRS, etc. to achieve wireless image transmission.

[0052] Reference Figures 6 to 9Furthermore, the visual exploration and stripping device also includes a flushing pipeline 6. The flushing pipeline 6 passes through the handle 1 and is arranged along the support rod 2. The flushing pipeline 6 extends between the reflector 3 and the camera module 4, and is bifurcated to form two branches 61, one of which is directed toward the reflector 3, and the other is directed toward the camera end of the camera module 4. A support block 22 for supporting the flushing pipeline 6 is provided on the support rod 2. An injection interface 62 is provided at one end of the flushing pipeline 6, and the injection interface 62 passes through the handle 1. The middle position of the flushing management is bent to avoid the driving wheel 52.

[0053] The implementation principle of a pedicle screw insertion position visual detection and stripping device in the present application embodiment is as follows: The handle 1 is used to operate the support rod 2 to send the reflector 3 into the pedicle screw insertion position, and the reflector 3 reflects the light to the camera module 4 on the handle 1. The mirror seat 31 is rotatably connected to the support rod 2, and the lens 32 is set in the mirror seat 31. By rotating the driving wheel 52 on the handle 1, the transmission rope 51 drives the driven wheel 53 and the mirror seat 31 to rotate, and the rotation of the mirror seat 31 is adjusted to adjust the reflection direction of the reflector 3 as needed. The light reflected by the reflector 3 enters the imaging device 42 through the lens 41, and the imaging device 42 converts the optical signal into an electrical signal, which is sent to the host for display through the transmission unit. The flushing liquid is sprayed to the reflector 3 and the camera module 4 through the flushing pipeline 6 to remove dirt and blood stains on the surgical site.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A visual detection and stripping device for pedicle screw insertion position, characterized in that: The invention comprises a handle (1), a support rod (2), a reflector (3) and a camera module (4); one end of the support rod (2) is connected to the handle (1), and the other end of the support rod (2) is extended away from the handle (1) and then bent; the reflector (3) is connected to the bent end of the support rod (2); the reflective surface of the reflector (3) faces the handle (1); and the camera module (4) is arranged on the handle (1) to receive light reflected by the reflector (3).

2. The visual detection and stripping device for pedicle screw insertion position according to claim 1, characterized in that: The reflector (3) comprises a mirror seat (31) and a lens (32); the mirror seat (31) is rotatably connected to the support rod (2); and the lens (32) is arranged in the mirror seat (31); The visual detection stripping device further comprises a control component (5) for controlling the rotation of the mirror seat (31).

3. The visual detection and stripping device for pedicle screw insertion position according to claim 2, characterized in that: The lens (32) is a convex lens (32).

4. The visual detection and stripping device for pedicle screw insertion position according to claim 2, characterized in that: The control assembly (5) comprises a transmission rope (51), a driving wheel (52) and a driven wheel (53); the two ends of the transmission rope (51) are respectively wrapped around the driving wheel (52) and the driven wheel (53) and then connected end to end; the transmission rope (51) is in a taut state; the support rod (2) is rotatably connected to the mirror base (31) via a rotating shaft (21); the driven wheel (53) is coaxial with the rotating shaft (21) and connected to the mirror base (31); the driving wheel (52) is rotatably connected to the handle (1).

5. The visual detection and stripping device for pedicle screw insertion position according to claim 4, characterized in that: The number of turns of the transmission rope (51) is greater than or equal to one.

6. The visual detection and stripping device for pedicle screw insertion position according to claim 4, characterized in that: It also includes a plurality of tensioning piles (54) arranged at intervals on the support rod (2); the side close to the line connecting the driving wheel (52) and the driven wheel (53) is the inner side, and the transmission rope (51) is bundled and abuts against the outer sides of the plurality of tensioning piles (54).

7. The visual detection and stripping device for pedicle screw insertion position according to claim 1, characterized in that: The camera module (4) comprises a lens (41), an imaging device (42), and a transmission unit for transmitting an image signal generated by the imaging device (42) to a host; the imaging device (42) is arranged in the handle (1); and the lens (41) passes through the handle (1) toward the reflector (3).

8. The visual detection and stripping device for pedicle screw insertion position according to claim 7, characterized in that: The transmission unit comprises a telecommunication interface (43) and a transmission cable; one end of the telecommunication interface (43) is connected to the imaging device (42) and the other end passes through the handle (1); the transmission cable is detachably connected to the telecommunication interface (43).

9. The visual detection and stripping device for pedicle screw insertion position according to any one of claims 1 to 8, characterized in that: The visual detection and stripping device further comprises a flushing pipeline (6); the flushing pipeline (6) passes through the handle (1) and is arranged along the support rod (2); the flushing pipeline (6) extends between the reflector (3) and the camera module (4), and bifurcates to form two branch pipes (61), one of the branch pipes (61) is directed toward the reflector (3), and the other branch pipe (61) is directed toward the camera end of the camera module (4).

10. The visual detection and stripping device for pedicle screw insertion position according to claim 9, characterized in that: An injection interface (62) is provided at one end of the flushing pipeline (6), and the injection interface (62) passes through the handle (1).

Images