Percutaneous implantation elastic modulus intervertebral dilator and operation kit

Abstract

The invention relates to a percutaneous implantation elastic modulus intervertebral dilator and an operation kit, and belongs to the technical field of spine surgery implants. In order to solve the problems that an existing intervertebral dilator causes a large wound to a patient and the distraction angle cannot be adjusted, the intervertebral dilator is provided with a dilator body, an angle auxiliary adjusting mechanism, an auxiliary suite and an angle feedback mechanism, the dilator body is used for being placed in the intervertebral space of the patient, and the angle auxiliary adjusting mechanism is arranged in the dilator body; the auxiliary suite comprises a first installation tool and a second installation tool, the first installation tool is arranged at the rear end of the spreader body and connected with the angle auxiliary adjusting mechanism, after the spreader body is placed, the first installation tool is taken down, and the spreader body is locked and fixed through the second installation tool; the angle feedback mechanism is arranged on the spreader body and extends to be connected with the first mounting tool, and an operator observes the spreading angle through the angle feedback mechanism. The operation steps are greatly reduced, and the operation efficiency and the intervertebral fusion effect can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of spinal surgery implants, and in particular to a percutaneously implanted elastic modulus intervertebral spacer and an operation kit. Background Art

[0002] The spine is the mast of the human body, supporting the weight of the entire body. With the great changes in people's production and lifestyle, more and more people need to sit at their desks for long periods of time. In addition, with the increasing aging of society, spinal diseases such as cervical spondylosis, lumbar disc herniation, lumbar spinal stenosis, lumbar spondylolisthesis and scoliosis are becoming more common. In the current medical field, intervertebral fusion is a common spinal surgical treatment method used to treat various spinal problems, such as intervertebral disc degeneration, spinal deformity, spinal injury and other related diseases. Intervertebral fusion implants a fixed cage in the original intervertebral space. Through the support of the cage, the intervertebral space height is restored, the intervertebral foramen is expanded, the symptoms of nerve compression are relieved, the stability of the segment is enhanced, and secondary degenerative lesions in adjacent segments are avoided.

[0003] At present, the common practice is to implant a stent with screws into the intervertebral space and fix the screws on the vertebrae. The stent is used to provide support, and the screws are used to fix the stent to prevent the stent from shifting. However, this way of matching the stent with the screws will have the following problems: the size of the stent is usually fixed, and the doctor cannot change its length, width and height ratio and the inclination of the upper and lower support surfaces, which cannot achieve the best intervertebral support effect. The stent needs to be fixed with four thick pedicle screws, which will cause greater trauma and radiological burden to the patient. In addition, the insertion depth of the stent is often based on the doctor's estimate. The fixed-size stent often does not meet the actual requirements due to insufficient height or high height. The inclination angle of the support cannot be accurately pushed to the ideal position by the stent, and the ideal support effect cannot be given to the vertebra. Although some openers can also open two adjacent vertebrae to a certain angle, this opening angle is often fixed, and cannot be adaptively adjusted according to the actual situation of different patients, resulting in poor general applicability.

[0004] In view of the above problems, there is an urgent need for an intervertebral distraction device that can flexibly adjust the distraction angle to achieve a better effect of reshaping the intervertebral inclination angle. Summary of the invention

[0005] In view of the defects existing in the above-mentioned prior art, the present invention aims to provide a percutaneously implantable elastic modulus intervertebral spacer and an operation kit, which can quickly adjust the angle of the front end of the spacer body through an angle auxiliary adjustment mechanism to reshape the lumbar segment lordosis angle, and while adjusting the angle, cooperate with the angle feedback mechanism to timely observe and grasp the angle adjustment amplitude, and also cooperate with the end plate insert and the pressure cover to fix the spacer body in the intervertebral space, thereby effectively solving the problems existing in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: A percutaneously implanted elastic modulus intervertebral spacer and an operation kit, comprising: a distractor body for placement in the intervertebral space of a patient; An angle auxiliary adjustment mechanism is arranged inside the main body of the spreader and is used to adjust the spread angle of the front end of the main body of the spreader; The auxiliary kit includes an installation tool 1 and an installation tool 2. The installation tool 1 is arranged at the rear end of the main body of the spreader and connected to the angle auxiliary adjustment mechanism. After the main body of the spreader is inserted, the installation tool 1 is removed and the main body of the spreader is sealed and fixed with the installation tool 2. The angle feedback mechanism includes a rotating component and an angle observation component. The rotating component is arranged on the expander body, and the angle observation component is arranged on the installation tool. The rotating component and the angle observation component are connected by a connecting belt. The operator observes the expansion angle of the expander body through the angle observation component.

[0007] A further preferred embodiment of the above technical solution is that a transverse opening is provided in the middle of the front part of the spreader body, so that the front part of the spreader body forms an upper spreader body and a lower spreader body, and the angle auxiliary adjustment mechanism is located between the upper spreader body and the lower spreader body.

[0008] A further preferred embodiment of the above technical solution is: the angle auxiliary adjustment mechanism includes a sliding block, a spreading rod, an upper connecting rod and a lower connecting rod, the sliding block is movably connected in the transverse opening, the spreading rod is inserted in parallel in the spreader body and passes through the sliding block, the two ends of the upper connecting rod are respectively connected to the upper spreading body and the sliding block, and the two ends of the lower connecting rod are respectively connected to the lower spreading body and the sliding block.

[0009] A further preferred scheme of the above technical scheme is: the rotating component is connected to the upper support body, the rotating component includes an adhesive plate, an auxiliary shaft and a fan-shaped block, the adhesive plate is arranged at the bottom of the upper support body and connected to the fan-shaped block, the auxiliary shaft is embedded in the rotation center of the upper support body, the fan-shaped block is arranged on the auxiliary shaft, and one end of the connecting belt is fixedly connected to the fan-shaped block.

[0010] Based on the above technical solution, further, the angle observation component includes a scale display and an angle adjuster located inside it. The scale display is arranged at the handheld end of the installation tool one, and the other end of the connecting belt is connected to the angle adjuster.

[0011] A further preferred solution is that the angle adjuster includes a transmission member and a helical gear. One end of the transmission member is matched with the helical gear, and a central shaft extending outside the scale display is arranged at the center of the helical gear.

[0012] A further preferred solution is that the transmission member includes a transmission shaft, a rotating disk, and a bevel gear. The rotating disk and the bevel gear are respectively connected to both ends of the transmission shaft. The bevel gear meshes with the helical gear. The connecting belt is fixedly connected to the rotating disk, and the rotating disk is connected to the angle display through an elastic member.

[0013] A further preferred solution is that the scale display includes a housing and a pointer. Angular scales are arranged on the housing, and the pointer is connected to the outside of the housing through a central shaft.

[0014] Compared with the prior art, the present invention has the following beneficial effects: A percutaneous implantable elastic modulus intervertebral distractor and operation kit of the present invention can realize the operation of intervertebral space distraction when the patient is in a conscious analgesic state. By adjusting the distraction angle of the distractor main body, the lumbar segment lordosis angle is reshaped. And by knocking in the upper and lower endplate inserts and installing a gland at the rear end of the distractor main body, the fixation and blockade of the distractor main body in the intervertebral space are realized, avoiding the trauma caused to the patient by the traditional method of using thick screws to fix the bracket. At the same time, the present invention can also greatly reduce the operation steps, improve the surgical efficiency and the intervertebral fusion effect. The specific analysis is as follows: 1. By setting an angle auxiliary adjustment mechanism, the cooperation of the installation tool one and the angle auxiliary adjustment mechanism is used to realize the adjustment of the distraction angle at the front end of the distractor main body. During the operation, by rotating the adjustment rod on the handle one, the distraction rod is driven to rotate. When the distraction rod rotates, it pushes the sliding block forward, and cooperates with the upper connecting rod and the lower connecting rod to push the upper distraction body and the lower distraction body to rotate away from each other, so that the front end angle of the distractor main body opens, realizing the function of reshaping the lumbar segment lordosis angle.

[0015] 2. By setting an angle feedback mechanism, during the distraction process at the front end of the distractor main body, the auxiliary rod and the sector block are driven to rotate synchronously by the upper distraction body, so that the tight connecting belt becomes loose towards the rear side. At this time, the rotating disk connected to the other end of the connecting belt rotates, the rotating disk drives the bevel gear to rotate, and the bevel gear drives the cone gear to rotate synchronously, and then drives the pointer connected to the central shaft on the bevel gear to rotate. The operator can directly observe the rotation angle of the pointer to timely understand the angle adjustment state at the front end of the distractor main body, so as to realize the required distraction angle according to the actual situation of different patients, which more meets the clinical use requirements.

[0016] 3. The intervertebral distractor of the present invention can meet the need for a vertebral space distraction angle of 5° to 11° required clinically. In particular, for the common distraction angles of 5°, 8°, and 11° clinically, precise adjustment can be made as needed. Compared with others, the trauma to patients is smaller, the operation steps are simplified, which is beneficial to the rapid recovery of patients after surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art.

[0018] Figure 1 It is a schematic diagram of the overall structure of a percutaneous implantable elastic modulus intervertebral distractor and an operation kit of the present invention; Figure 2 It is a schematic diagram of the structure of the first installation tool of the present invention cooperating with the distractor main body; Figure 3 It is Figure 2 an enlarged view of the front end structure of the distractor main body in Figure 4 It is a schematic diagram of the structure of the angle auxiliary adjustment mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the distractor main body of the present invention; Figure 6 It is a schematic diagram of the structure of the rear part of the distractor main body of the present invention; Figure 7 It is a schematic diagram of the structure of the first handle of the present invention; Figure 8 It is a schematic diagram of the structure of the second handle of the present invention; Figure 9 It is a schematic diagram of the structure of the first gland at one angle of the present invention; Figure 10 It is a schematic diagram of the structure of the first gland at another angle of the present invention; Figure 11 It is a schematic diagram of the cooperation between the angle feedback mechanism and the distractor main body of the present invention; Figure 12 It is a schematic diagram of the structure of the rotating assembly of the present invention; Figure 13 It is a cross-sectional view of the cooperation between the rotating assembly and the distractor main body of the present invention; Figure 14 It is a schematic diagram of the structure of the housing and the pointer in the angle observation assembly of the present invention; Figure 15 It is a schematic diagram of the cooperation relationship between the transmission member and the helical gear in the angle observation assembly of the present invention; In the figure: 1. Distractor main body; 11. Horizontal opening; 12. Upper distractor body; 13. Lower distractor body; 14. Arc-shaped sleeve; 15. Arc-shaped groove; 16. Arc-shaped through groove; 2. Angle auxiliary adjustment mechanism; 21. Sliding block; 22. Distracting rod; 23. Upper connecting rod; 24. Lower connecting rod; 3. Installation tool one; 31. Handle one; 32. Thrust rod; 33. End plate insert; 34. Adjusting rod; 4. Installation tool two; 41. Handle two; 42. Pressure cover; 5. Angle feedback mechanism; 51. Rotating assembly; 511. Adhesive plate; 512. Auxiliary shaft; 513. Sector block; 52. Connecting belt; 53. Angle observation assembly; 531. Transmission part; 5311. Transmission shaft; 5312. Rotating disk; 5313. Bevel gear; 532. Helical gear; 5321. Central shaft; 533. Housing; 534. Pointer; 535. Elastic part. Detailed implementation mode

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] The present invention is a type of intervertebral distractor (also known as an intervertebral fusion device) designed for lumbar spondylolisthesis or instability caused by lumbar degenerative diseases and other lumbar disc diseases. After the protruding intervertebral disc is removed and the endplate cartilage in the intervertebral space is cleared through a spinal endoscope in a state of conscious analgesia for the patient, it can be placed in the intervertebral space. Different from the prior art, this distractor can adaptively adjust the elastic modulus according to the actual situation of the patient, making the distractor higher in the front and lower in the back, and can meet any state with a distraction angle of 5° to 11°, so as to reshape the anterior convex angle of the lumbar segment and meet the requirements of lumbar interbody fusion surgery.

[0022] The following will Figures 1 - 15 describe the technical solutions of the present invention in detail with reference to the

[0023] Embodiment 1:

[0024] Refer to Figures 1 - 10 ,Figure 13 As shown in the figure, the present invention provides a percutaneous implantable elastic modulus intervertebral distractor and an operation kit, including a distractor main body 1, an angle auxiliary adjustment mechanism 2, an auxiliary kit, and an angle feedback mechanism 5. The distractor main body 1 is used to be placed in the intervertebral space of a patient. The angle auxiliary adjustment mechanism 2 is arranged inside the distractor main body 1 and is used to adjust the opening angle at the front end of the distractor main body 1. The auxiliary kit includes an installation tool 1 3 and an installation tool 2 4. The installation tool 1 3 is detachably connected to the rear end of the distractor main body 1 and is connected to the angle auxiliary adjustment mechanism 2. After the distractor main body 1 is placed, the installation tool 1 3 is removed, and the distractor main body 1 is locked and fixed by using the installation tool 2 4. The angle feedback mechanism 5 includes a rotation assembly 51 and an angle observation assembly 53. The rotation assembly 51 is arranged on the distractor main body 1, and the angle observation assembly 53 is arranged on the installation tool 1 3. And the rotation assembly 51 and the angle observation assembly 53 are connected by a connecting belt 52. The operator observes the opening angle of the distractor main body 1 through the angle observation assembly 53.

[0025] Specifically, the distractor main body 1 has a rectangular structure and is made of PEEK material which is currently commonly used in the medical field for intervertebral fusion devices. The characteristics of PEEK material are that its elastic modulus is close to that of bone tissue, its mechanical properties are close to those of cortical bone, the stress shielding is small, and the light transmittance is good, which is beneficial for imaging observation. The front end of the distractor main body 1 is flat, and both its upper surface and lower surface are serrated protrusions, which can increase the biting force in the intervertebral space and also increase the stability after the distractor main body 1 is opened.

[0026] Further, a transverse opening 11 is provided in the middle of the front part of the distractor main body 1, as Figure 5 shown, so that the front part of the distractor main body 1 forms an upper opening body 12 and a lower opening body 13. An installation channel is provided at the rear part of the distractor main body 1, and the opening end of the installation channel is a threaded structure. The upper opening body 12 and the lower opening body 13 are movably connected to the rear part of the distractor main body 1. The angle auxiliary adjustment mechanism 2 is located between the upper opening body 12 and the lower opening body 13 and is connected to the installation channel; specifically, as Figure 5 shown, arc-shaped sleeves 14 are provided at the connection between the upper opening body 12 and the lower opening body 13 and the rear part of the distractor main body 1, and arc-shaped grooves 15 adapted to the arc-shaped sleeves 14 are provided at the rear part of the distractor main body 1. Preferably, the radian of the arc-shaped groove 15 is greater than 1 / 2 of a circular arc to ensure the stability of the upper opening body 12 and the lower opening body 13 during the rotation process.

[0027] In some preferred embodiments, in combination with Figure 4 and Figure 13As shown, the angle auxiliary adjustment mechanism 2 includes a sliding block 21, a spreading rod 22, an upper connecting rod 23 and a lower connecting rod 24. The sliding block 21 is movably connected in the transverse opening 11, and the spreading rod 22 is inserted in parallel in the spreader body 1. At the same time, the front end of the spreading rod 22 passes through the sliding block 21 and is movably connected to the sliding block 21. The two ends of the upper connecting rod 23 are respectively hinged to the upper spreading body 12 and the sliding block 21, and the two ends of the lower connecting rod 24 are respectively hinged to the lower spreading body 13 and the sliding block 21. Specifically, the upper support body 12 and the lower support body 13 are respectively provided with a first through groove and a second through groove, the upper end and the lower end of the sliding block 21 are respectively located in the first through groove and the second through groove, the rear end of the support rod 22 is inserted in the installation channel, the front end of the support rod 22 is provided with an external thread, and the interior of the sliding block 21 is provided with an internal thread matching the external thread. When the support rod 22 is rotated, the sliding block 21 is pushed to move forward, and the upper connecting rod 23 and the lower connecting rod 24 connected to the sliding block 21 are rotated at an angle, so that the front end of the upper support body 12 and the front end of the lower support body 13 are synchronously opened in opposite directions, thereby changing the support angle.

[0028] In this embodiment, the installation tool 1 3 is mainly used in the stage of adjusting the opening angle of the opener body 1 after insertion, and the installation tool 2 4 is mainly used in the stage of locking and fixing the opener body 1 after the opening angle adjustment is completed. Figure 1 , Figure 3 , Figures 7 - 10 As shown, specifically, the installation tool 3 includes a handle 31, two push rods 32 and two end plate inserts 33. The handle 31 is provided with two holes through which the corresponding push rods 32 are respectively inserted. The end plate inserts 33 are made of expandable alloy inserts. The internal movement of the handle 31 passes through the adjustment rod 34. The handheld end of the adjustment rod 34 is fixedly connected to the grip. The operating end of the adjustment rod 34 matches the rear end of the spreader rod 22. The handle 31 is installed at the rear of the spreader body. The adjustment rod 34 is driven to rotate by rotating the grip, so that the adjustment rod 34 drives the spreader rod 22 to rotate and push the sliding block 21 to move forward, so that the upper spreader body 12 and the lower spreader body 13 are changed from a parallel state to an open state; when the angle of the spreader body 1 is adjusted to a suitable state, Two end plate inserts 33 are inserted into the rear part of the expander body 1, and then the push rod 32 is inserted into the corresponding socket, and the end of the push rod 32 is gently tapped with a rubber cone, so that the end plate insert 33 is formed along the arc-shaped through groove 16 on the expander body 1 and enters the patient's intervertebral space for fixation. After completing the above operation, remove the handle 1 31 and the push rod 32, and use the installation tool 2 4 to perform the next step. The installation tool 2 4 includes a handle 2 41 and a pressure cover 42. The operating end of the handle 2 41 adopts four protrusions to cooperate with the pressure cover 42. The pressure cover 42 is provided with a threaded structure that cooperates with the expander body 1 (here, the threaded structure of the opening end of the above-mentioned installation channel). The handle 2 41 is used to install the pressure cover 42 at the rear end of the expander body 1 to achieve blocking and fixation.

[0029] Embodiment 2:

[0030] Based on the above Embodiment 1, in order to facilitate the operator to timely observe the opening angle at the front of the dilator body 1, the following further improvements are made to the angle feedback mechanism 5 in this embodiment.

[0031] As Figures 11 - 15 shown, the angle feedback mechanism 5 includes a rotating assembly 51, a connecting belt 52 and an angle observation assembly 53. Since the upper dilating body 12 and the lower dilating body 13 of the present invention are symmetrically arranged and rotate synchronously during the angle dilation process, only one set of rotating assembly 51 needs to be provided, and the rotating assembly 51 is connected to the upper dilating body 12. The angle observation assembly 53 is arranged on the installation tool 1, and the rotating assembly 51 is connected to the angle observation assembly 53 through the connecting belt 52, and the opening angle at the front end of the dilator body 1 is feedback by this set of rotating assembly 51.

[0032] Specifically, as Figure 12 shown, the rotating assembly 51 includes an adhesive plate 511, an auxiliary shaft 512 and a sector block 513. The adhesive plate 511 is fixedly connected to the bottom of the upper dilating body 12. The auxiliary shaft 512 is embedded at the rotation center of the upper dilating body 12. The sector block 513 is fixedly connected to the outer wall of the auxiliary shaft 512, and the sector block 513 is fixedly connected to the adhesive plate 511. One end of the connecting belt 52 is fixedly connected to the outer circumference of the sector block 513. In this embodiment, the auxiliary shaft 512 is fixedly installed in the arc-shaped sleeve 14, and the arc-shaped sleeve 14 rotates in the arc-shaped groove 15 as the upper dilating body 12 rotates, so that the sector block 513 and the connecting belt 52 rotate synchronously with the rotation direction of the auxiliary shaft 512.

[0033] As Figures 14 - 15 shown, the angle observation assembly 53 includes a scale display and an angle adjuster. The angle adjuster is arranged inside the scale display. The scale display is arranged at the handheld end of the installation tool 1. The other end of the connecting belt 52 is connected to the angle adjuster. Specifically: The angle adjuster includes a transmission member 531 and a helical gear 532. One end of the transmission member 531 is engaged with the helical gear 532, and a central shaft 5321 extending outside the scale display is provided at the center of the helical gear 532. Among them, the transmission member 531 includes a transmission shaft 5311, a rotating disk 5312 and a bevel gear 5313. The rotating disk 5312 and the bevel gear 5313 are respectively connected to both ends of the transmission shaft 5311. The bevel gear 5313 is engaged with the helical gear 532. The end of the connecting belt 52 is fixedly connected to the rotating disk 5312. The rotating disk 5312 is connected to the angle display through an elastic member 535, which plays a traction role. In this embodiment, the elastic member 535 is a spring. One end of the spring is connected to the rotating disk 5312, and the other end is connected to the inner wall of the scale display.

[0034] Combined with Figure 14 As shown, the scale display includes a housing 533 and a pointer 534. Angular scales are provided on the housing 533. The pointer 534 is installed at the end of the central shaft 5321 extending outside the housing 533. According to clinical needs, the angular scales on the housing 533 are provided in three specifications: 5°, 8°, and 11°. When the upper spreader 12 and the lower spreader 13 are synchronously opened outward, the upper spreader 12 and the auxiliary shaft 512 rotate synchronously in the arc-shaped groove 15, causing the connecting belt 52 to rotate counterclockwise along with the sector block 513. At this time, the rotating disk 5312 rotates counterclockwise. When the bevel gear 5313 rotates with the transmission shaft 5311, it drives the helical gear 532 to rotate. The pointer 534 is driven to rotate by the central shaft 5321 in the middle of the helical gear 532. When the pointer 534 indicates the required angle, the operation can be stopped.

[0035] Embodiment 3:

[0036] A percutaneous implantable elastic modulus intervertebral spreader and operation kit can, when the patient is in a conscious analgesic state, through a small incision of 1-2 cm made on the posterolateral side of the back, after removing the protruding intervertebral disc and clearing the endplate cartilage of the intervertebral space through a spinal endoscope, perform corresponding implantation through the Kambin triangle of the lumbar intervertebral foramen with the intervertebral spreader and operation kit of the present invention. In clinical practice: Fill the bone graft material into the intervertebral fusion cage. After inserting the adjusting rod 34 into the first handle 31, connect the dilator body 1 through the operating end of the first handle 31 and then slowly knock it into the patient's intervertebral space to the planned depth. Rotate the grip to drive the rotation of the adjusting rod 34. Through the adjusting rod 34, the spreading rod 22 rotates. When the spreading rod 22 rotates, it pushes the sliding block 21 to move forward to the front part of the dilator body 1, causing the upper connecting rod 23 and the lower connecting rod 24 to rotate, and respectively pushing the upper spreading body 12 and the lower spreading body 13 to rotate away from each other. During the rotation of the upper spreading body 12 and the lower spreading body 13, the arc-shaped sleeve 14 and the auxiliary shaft 512 rotate synchronously in the arc-shaped groove 15. The rotation of the auxiliary shaft 512 causes one end of the connecting belt 52 connected to the sector block 513 to rotate counterclockwise along with the sector block 513. At the same time, the turntable 5312 connected to the other end of the connecting belt 52 rotates counterclockwise, causing the bevel gear 5313 to drive the helical gear 532 to rotate, thereby driving the pointer 534 connected to the central shaft 5321 to rotate together. The operator can intuitively observe the angular scale where the pointer 534 is located, adjust the spreading angle to the required angle value according to the patient's lumbar spine sequence reconstruction requirements, and then, according to the above method, place another dilator of the present invention on the other side of the same lumbar spine segment and spread it to the appropriate angle, adjust the intervertebral disc endplate to the horizontal state on the coronal plane, and maintain the anterior opening angle of the intervertebral disc on the sagittal plane, which is beneficial for applying cases with local lumbar scoliosis; When the spreading angles of the dilator bodies 1 on both sides are adjusted appropriately, insert the ejector rod 32 into the corresponding jack to lock the spreading angle, and then insert the endplate insert 33 into the rear part of the dilator body 1. Gently tap the end of the ejector rod 32 with a rubber cone to make the endplate insert 33 embed into the endplate and fix the dilator, so as to prevent the dilator from retracting during the later lumbar spine movement; After completing the above operations, remove the first handle 31 and cut the connecting belt 52. Install the gland 42 at the operating end of the second handle 41, place the gland 42 at the rear part of the dilator body 1, and use the second handle 41 to install the gland 42 on the dilator body 1 to achieve the locking and fixing of the dilator body 1, avoiding the large-scale trauma to the lumbar muscles of the patient caused by thick pedicle screws and the burden of fluoroscopy radiation in traditional surgeries. At the same time, it greatly reduces the operation steps, improves the surgical efficiency and effect, and also reduces the patient's fear of surgical treatment; During the healing process, the upper and lower vertebrae located on the dilator body 1 will be connected to the surrounding autologous bone blocks through the dilator to form a new bone entity, realizing the healing of the vertebrae.

[0037] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A percutaneously implantable elastic modulus intervertebral spacer and an operating kit, characterized in that: include: A distractor body (1) is used to be placed in the intervertebral space of a patient; An angle auxiliary adjustment mechanism (2) is arranged inside the spreader body (1) and is used to adjust the spread angle of the front end of the spreader body (1); The auxiliary kit comprises an installation tool 1 (3) and an installation tool 2 (4); the installation tool 1 (3) is arranged at the rear end of the spreader body (1) and connected to the angle auxiliary adjustment mechanism (2); after the spreader body (1) is inserted, the installation tool 1 (3) is removed, and the spreader body (1) is sealed and fixed using the installation tool 2 (4); The angle feedback mechanism (5) comprises a rotating assembly (51) and an angle observation assembly (53); the rotating assembly (51) is arranged on the opener body (1); the angle observation assembly (53) is arranged on the installation tool (3); the rotating assembly (51) and the angle observation assembly (53) are connected via a connecting belt (52); an operator observes the open angle of the opener body (1) via the angle observation assembly (53).

2. A percutaneously implantable elastic modulus intervertebral spacer and operation kit according to claim 1, characterized in that: A transverse opening (11) is provided in the middle of the front part of the spreader body (1), so that the front part of the spreader body (1) forms an upper spreader body (12) and a lower spreader body (13), and the angle auxiliary adjustment mechanism (2) is located between the upper spreader body (12) and the lower spreader body (13).

3. A percutaneously implantable elastic modulus intervertebral spacer and operation kit according to claim 2, characterized in that: The angle auxiliary adjustment mechanism (2) comprises a sliding block (21), a spreading rod (22), an upper connecting rod (23) and a lower connecting rod (24); the sliding block (21) is movably connected in the transverse opening (11); the spreading rod (22) is inserted in parallel in the spreader body (1) and passes through the sliding block (21); the two ends of the upper connecting rod (23) are respectively connected to the upper spreading body (12) and the sliding block (21); and the two ends of the lower connecting rod (24) are respectively connected to the lower spreading body (13) and the sliding block (21).

4. A percutaneously implantable elastic modulus intervertebral spacer and operation kit according to claim 3, characterized in that: The rotating assembly (51) is connected to the upper support body (12), and comprises an adhesive plate (511), an auxiliary shaft (512) and a fan-shaped block (513); the adhesive plate (511) is arranged at the bottom of the upper support body (12) and connected to the fan-shaped block (513); the auxiliary shaft (512) is embedded at the rotation center of the upper support body (12); the fan-shaped block (513) is arranged on the auxiliary shaft (512); and one end of the connecting belt (52) is fixedly connected to the fan-shaped block (513).

5. A percutaneously implantable elastic modulus intervertebral spacer and operation kit according to claim 4, characterized in that: The angle observation assembly (53) comprises a scale display and an angle adjuster located inside the scale display, the scale display is arranged on the handheld end of the first installation tool (3), and the other end of the connecting belt (52) is connected to the angle adjuster.

6. A percutaneously implantable elastic modulus intervertebral spacer and operation kit according to claim 5, characterized in that: The angle adjuster comprises a transmission member (531) and a bevel gear (532); one end of the transmission member (531) matches the bevel gear (532); and a central axis (5321) extending to the outside of the scale display is arranged at the center of the bevel gear (532).

7. A percutaneously implantable elastic modulus intervertebral spacer and operation kit according to claim 6, characterized in that: The transmission member (531) comprises a transmission shaft (5311), a rotating disk (5312) and a bevel gear (5313); the rotating disk (5312) and the bevel gear (5313) are respectively connected to two ends of the transmission shaft (5311); the bevel gear (5313) is meshed with the helical gear (532); the connecting belt (52) is fixedly connected to the rotating disk (5312); and the rotating disk (5312) and the angle display are connected via an elastic member (535).

8. The percutaneously implantable elastic modulus intervertebral spacer and operation kit according to claim 7, characterized in that: The scale display comprises a housing (533) and a pointer (534); an angular scale is provided on the housing (533); and the pointer (534) is connected to the outside of the housing (533) via a central axis (5321).

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