UBE surgery fibrous ring suturing device and knotting-free suturing method

Abstract

The invention relates to the technical field of medical instruments, and discloses a UBE surgery fibrous ring suturing device and a knotting-free suturing method.The UBE surgery fibrous ring suturing device comprises a first suturing instrument, a second suturing instrument, a third suturing instrument and a surgical suture line; each of the first stitching instrument, the second stitching instrument and the third stitching instrument comprises a first stitching instrument shell, a second stitching instrument shell, a push rod assembly and a needle cylinder; the first stitching instrument shell and the second stitching instrument shell are connected in an interference fit mode through the connecting pins and the connecting holes. The lower portion of the push rod assembly is arranged in the needle cylinder and can move freely, the upper portion of the push rod assembly is connected with the second stitching instrument shell through a gear and a rack to move up and down, and left-right movement of the push rod assembly is limited through a sliding way on the first stitching instrument shell. Through the cooperation of the surgical suture line and the stop strip, a fixed structure is formed under intervertebral disc fibrous ring tissue, in-vitro knotting is not needed, the suture line keeps stable through the interaction of the stop strip and the coil after vertically penetrating the tissue, and postoperative complications are reduced while it is ensured that suturing is firm.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a UBE surgical annulus fibrosus suture device and a knotless suture method. Background Art

[0002] Lumbar disc herniation is a common disease in spinal surgery. With the development of spinal endoscopy technology, the unilateral biportal endoscopic discectomy (UBE) has been widely used in the treatment. This technology removes the protruding nucleus pulposus through a dual-channel operation, featuring small surgical trauma, clear vision, and rapid postoperative recovery. During the operation, an annulus fibrosus suture device is usually used to suture the operation channel on the annulus fibrosus to reduce the postoperative recurrence rate. The existing suture methods generally use a suture needle of a suture device with a coil and a cross brace. First, one end of the suture is inserted into one side of the annulus fibrosus and the cross brace is fixed. Then, the other end is inserted into the other side of the annulus fibrosus and fixed. Subsequently, the suture is tightened and knotted outside the body, and finally the excess part is cut off to complete the suture.

[0003] However, the existing annulus fibrosus suture technology has certain drawbacks. The operation process requires multiple punctures of the annulus fibrosus and the use of various instruments to complete the steps of knotting, pushing the knot, and cutting the thread, resulting in a relatively high surgical complexity and long time consumption. In addition, the knot formed outside the body is located on the surface of the annulus fibrosus, increasing the potential risk of compression on the surrounding nerve tissues and possibly causing postoperative discomfort or complications. At the same time, the cross brace fixing method does not distribute the pulling force of the suture evenly, and the suture strength is difficult to meet the long-term stability requirements in some cases, posing a potential risk of recurrence. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a UBE surgical annulus fibrosus suture device and a knotless suture method, which solve the problem that the knot formed outside the body in the existing annulus fibrosus suture technology is located on the surface of the annulus fibrosus, increasing the potential risk of compression on the surrounding nerve tissues and possibly causing postoperative discomfort or complications.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A UBE surgical annulus fibrosus suture device includes a first suture device, a second suture device, a third suture device, and a surgical suture. The first suture device, the second suture device, and the third suture device each include a first suture device housing, a second suture device housing, a push rod assembly, and a syringe barrel. The first suture device housing and the second suture device housing are connected by interference fit of a connecting pin and a connecting hole. The lower part of the push rod assembly is placed in the syringe barrel and can move freely. The upper part is connected to the second suture device housing through a gear and a rack for vertical movement, and its lateral movement is restricted by a slideway on the first suture device housing. The syringe barrel is fixedly connected to the second suture device housing. The surgical suture includes a suture and a stop bar. Both ends of the suture are fixedly wound around the stop bar, and the stop bar is used to play a stopping role under the annulus fibrosus of the intervertebral disc.

[0006] Preferably, the first stapler housing includes a handle, a slideway, a first limit block and a connection hole; the handle is integrally formed with the first stapler housing for hand-held operation; the slideway is used to limit and guide the push rod assembly; the connection hole is in interference fit with the connection pin of the second stapler housing; the first limit block is fixedly connected to the first stapler housing for fixing the syringe barrel and the guide post.

[0007] Preferably, the second stapler housing includes a rack, a guide post, a second limit block and a syringe barrel hole; the rack is fixedly connected to the second stapler housing and forms a moving pair with the gear of the push rod assembly; the guide post is fixedly connected to the second limit block and the second stapler housing for support and positioning; the syringe barrel hole is used to guide and limit the syringe barrel.

[0008] Preferably, the push rod assembly includes a push rod, a return torsion spring, a gear, a limit torsion spring, a limit handle and a push block; a limit handle and a gear connecting rod are integrally formed on the upper part of the push rod, the return torsion spring is installed on the gear connecting rod and connected to the gear, and the return torsion spring provides a clockwise return force when the gear rotates counterclockwise; the limit handle is connected to the push rod through the limit torsion spring and can rotate and snap into the gear tooth groove to limit the gear from resetting; the push block is fixed to the lower part of the push rod for pushing the surgical suture.

[0009] Preferably, the syringe barrel is fixedly connected to the second stapler housing, has a bending angle at the bottom for guiding the surgical suture, and has long strip-shaped grooves on both sides of the root. The long strip-shaped grooves allow the suture to escape under external force but cannot escape in the natural state; the width of the stop bar is greater than the width of the groove and can only be pushed out from the inside of the syringe barrel by the push block.

[0010] Preferably, the device can be moved easily and can be operated by hand, and only one surgical suture is required to complete the suture of the annulus fibrosus of the intervertebral disc.

[0011] Preferably, a knotless suture method, characterized in that it is used for the UBE surgical annulus fibrosus suture device described in claim 1, includes the following steps: S1. Insert the syringe barrel of the second stapler under the left intervertebral disc tissue of the annulus fibrosus, push out the middle part of the surgical suture through the push rod assembly to form a coil and move it under the right intervertebral disc tissue of the annulus fibrosus, and then pull out the second stapler; S2. Insert the syringe barrel of the first stapler under the right intervertebral disc tissue of the annulus fibrosus and penetrate into the coil formed in step S1, push out the right part of the surgical suture through the push rod assembly until the right stop bar is located under the coil, and then pull out the first stapler; S3. Pull the third stapler to tighten the surgical suture. The coil is stuck under the annulus fibrosus disc tissue under the action of the stop bar and closes the annulus fibrosus. S4. Under the state that the surgical suture is tightened, insert the barrel of the third stapler under the disc tissue at other positions of the intervertebral disc, push out the left part of the surgical suture until the left stop bar is stuck under the disc tissue, and then pull out the third stapler to complete knotless suture.

[0012] Preferably, it also includes threading and fixing the surgical suture up and down through the disc tissue, without forming a knot, to avoid the interference of the knot on neurons.

[0013] Preferably, the push rod assembly can stop the operation at any time through mechanical control.

[0014] Preferably, the fixing position of the stop bar can be freely adjusted according to the state of the disc tissue, protecting the annulus fibrosus and improving the suture quality.

[0015] Working principle: This device completes the knotless suture of the annulus fibrosus of the intervertebral disc through three identical staplers and a surgical suture. At the beginning of the operation, the middle stapler is inserted under the left tissue of the annulus fibrosus, the middle part of the suture is pushed out to form a coil and moved to the right, and then pulled out. Then, the right stapler is inserted under the right tissue of the annulus fibrosus, penetrates into the coil and pushes out the right part of the suture until the stop bar is located under the coil, and then pulled out. After that, pull the left stapler to tighten the suture, so that the coil is stuck under the tissue under the action of the stop bar and closes the annulus fibrosus. Finally, under the state that the suture is tightened, the left stapler is inserted into another position, the left part of the suture is pushed out, and the stop bar is fixed under the tissue to complete the suture. The whole process realizes firm fixation by the interaction between the stop bar and the coil, without tying knots outside the body.

[0016] The present invention provides a UBE surgical annulus fibrosus suture device and a knotless suture method. It has the following beneficial effects: 1. Through the cooperation of the surgical suture and the stop bar, the present invention forms a fixed structure under the annulus fibrosus disc tissue, without tying knots outside the body, avoiding the situation that the knot in the traditional method may press neurons protruding from the surface of the annulus fibrosus. After the suture penetrates up and down through the tissue, it relies on the interaction between the stop bar and the coil to remain stable, ensuring firm suture and reducing postoperative complications.

[0017] 2. The present invention can complete the closure of the annulus fibrosus by using a surgical suture and three staplers. Compared with the complex process of traditional suture that requires multiple punctures, knotting and thread cutting, this method reduces the number of instrument replacements and steps through the operations of sequentially inserting, pushing out and tightening. The design of the mechanically controlled push rod further improves the continuity and accuracy of the operation and shortens the operation time.

[0018] 3. The fixed position of the stop bar of the present invention can be adjusted according to the thickness and hardness of the intervertebral disc tissue, and personalized fixation is achieved by controlling the piercing angle and the pushing distance during the suture process; this design allows the surgeon to flexibly adjust the suture depth and position in different patients or different parts, improving the applicability of the device to complex anatomical structures.

[0019] 4. The mechanical control structure of the push rod assembly of the present invention supports the functions of stopping and resetting at any time, and the pushing position of the suture can be accurately paused or adjusted during the operation to avoid tissue damage caused by excessive puncture or misoperation; the automatic return design of the return torsion spring further ensures the stability of the instrument during use and reduces the intraoperative risk.

[0020] 5. The present invention closes the surgical channel of the annulus fibrosus by tightening the suture to form a tight tissue connection. Compared with non-suturing or traditional suture methods, it can effectively reduce the recurrence rate of intervertebral disc herniation caused by annulus fibrosus defects; the stop function of the stop bar enhances the tensile resistance of the suture and maintains long-term stability. Description of the Drawings

[0021] Figure 1 is the overall schematic diagram of the UBE surgical annulus fibrosus suture device; Figure 2 is the exploded view of the suture device; Figure 3 is the exploded view of the first part of the suture device housing; Figure 4 is the exploded view of the second part of the suture device housing; Figure 5 is the exploded view of the push rod assembly; Figure 6 is the partially enlarged view of the push rod assembly; Figure 7 is the exploded view of the syringe barrel; Figure 8 is the exploded view of the surgical suture; Figure 9 is the cross-sectional view of the UBE surgical annulus fibrosus suture device in the initial state; Figure 10 is the partially enlarged cross-sectional view of the syringe barrel part of the UBE surgical annulus fibrosus suture device in the initial state; Figure 11 is the schematic diagram of suture step S1; Figure 12 is the cross-sectional view of suture step S1; Figure 13 is the partially enlarged cross-sectional view of the syringe barrel part of suture step S1; Figure 14 is the schematic diagram of suture step S2; Figure 15 is the partially enlarged schematic diagram of the syringe barrel part of suture step S2; Figure 16It is a schematic diagram of the suture step S3; Figure 17 It is an enlarged schematic diagram on the annulus fibrosus in the suture step S3; Figure 18 It is an enlarged schematic diagram under the annulus fibrosus in the suture step S3; Figure 19 It is a schematic diagram of the suture step S4; Figure 20 It is an enlarged schematic diagram on the annulus fibrosus in the suture step S4; Figure 21 It is an enlarged schematic diagram under the annulus fibrosus in the suture step S4.

[0022] Among them, 1 is the first stapler; 11 is the outer shell of the first stapler; 111 is the handle; 112 is the slideway; 113 is the first limit block; 114 is the connection hole; 12 is the outer shell of the second stapler; 121 is the connection pin; 122 is the rack; 123 is the guide post; 124 is the second limit block; 125 is the syringe hole; 13 is the push rod assembly; 131 is the push rod; 132 is the return torsion spring; 133 is the gear; 134 is the limit torsion spring; 135 is the limit handle; 136 is the push block; 14 is the syringe; 2 is the second stapler; 3 is the third stapler; 4 is the surgical suture; 41 is the suture thread; 42 is the stop strip; 5 is the intervertebral disc tissue; 51 is the annulus fibrosus. Specific embodiments

[0023] Next, in combination with the drawings of the present invention, the technical solutions of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to the attached Figure 1 - attached Figure 5 , the embodiment of the present invention provides a UBE surgical annulus fibrosus suture device, including the first stapler 1, the second stapler 2, the third stapler 3 and the surgical suture 4; The first stapler 1, the second stapler 2 and the third stapler 3 all include the outer shell of the first stapler 11, the outer shell of the second stapler 12, the push rod assembly 13 and the syringe 14; the outer shell of the first stapler 11 and the outer shell of the second stapler 12 are connected by interference fit through the connection pin 121 and the connection hole 114; the lower part of the push rod assembly 13 is placed in the syringe 14 and can move freely, and the upper part is connected to the outer shell of the second stapler 12 through the gear 133 and the rack 122 for up and down movement, and its left and right movement is restricted by the slideway 112 on the outer shell of the first stapler 11; the syringe 14 is fixedly connected to the outer shell of the second stapler 12; The surgical suture 4 includes a suture 41 and a stop strip 42. The two ends of the suture 41 are fixedly wound around the stop strip 42, and the stop strip 42 is used to play a stopping role under the intervertebral disc annulus fibrosus 51; Specifically, the stapler one 1, the stapler two 2, and the stapler three 3 are three stitching devices with exactly the same structure, which are respectively used to perform different steps during the stitching process of the intervertebral disc annulus fibrosus 51; the stapler housing one 11 and the stapler housing two 12 are made of medical plastic materials, and are firmly assembled through the interference fit between the connecting pin 121 and the connecting hole 114; the gear-rack connection of the push rod assembly 13 is constituted by the engagement of the rack 122 on the stapler housing two 12 and the gear 133, ensuring the accuracy of the up-and-down movement of the push rod 131 in the syringe barrel 14; the suture 41 of the surgical suture 4 is an absorbable medical suture, and the stop strip 42 is made of a biocompatible material, with a length of 5-10 mm to adapt to the stopping requirements under the annulus fibrosus 51 tissue.

[0025] Please refer to the appendix Figure 2 - appendix Figure 4 The stapler housing one 11 includes a handle 111, a slideway 112, a limit block one 113 and a connecting hole 114; the handle 111 is integrally formed with the stapler housing one 11 for hand-held operation; the slideway 112 is used for limiting and guiding the push rod assembly 13; the connecting hole 114 is in interference fit with the connecting pin 121 of the stapler housing two 12; the limit block one 113 is fixedly connected to the stapler housing one 11 for fixing the syringe barrel 14 and the guide post 123.

[0026] Specifically, the handle 111 is designed as an ergonomic arc-shaped structure with anti-slip textures on the surface, which is convenient for hand-held operation during the operation; the slideway 112 is a rectangular groove that extends longitudinally along the stapler housing one 11, and its width matches that of the push rod 131 of the push rod assembly 13 to ensure no left-right deviation during the movement; the limit block one 113 is bonded to the stapler housing one 11 through a medical adhesive, with a height of 3-5 mm, which is used to support the syringe barrel 14 and cooperate with the guide post 123 to ensure the stability of the syringe barrel 14 after assembly.

[0027] Please refer to the appendix Figure 4 - appendix Figure 5 The stapler housing two 12 includes a rack 122, a guide post 123, a limit block two 124 and a syringe barrel hole 125; the rack 122 is fixedly connected to the stapler housing two 12 to form a moving pair with the gear 133 of the push rod assembly 13; the guide post 123 is fixedly connected to the limit block two 124 and the stapler housing two 12 for support and positioning; the syringe barrel hole 125 is used for guiding and limiting the syringe barrel 14.

[0028] Specifically, the rack 122 is designed with straight teeth, the tooth pitch is 1 - 2 mm, and it is fixed to the second stapler housing 12 with hot melt adhesive to ensure the smoothness when the push rod assembly 13 moves; the guide post 123 is of cylindrical structure, with a diameter of 2 - 3 mm, and is fixedly bonded to the inner side of the second stapler housing 12 together with the second limit block 124 to enhance the overall rigidity; the syringe hole 125 is a circular through hole, with a diameter slightly larger than the outer diameter of the syringe 14, and the hole wall is smooth to reduce the frictional resistance when the syringe 14 is inserted.

[0029] Please refer to the appendix Figure 5 - appendix Figure 6 , the push rod assembly 13 includes a push rod 131, a return torsion spring 132, a gear 133, a limit torsion spring 134, a limit handle 135 and a push block 136; a limit handle 135 and a gear connecting rod are integrally formed on the upper part of the push rod 131, the return torsion spring 132 is installed on the gear connecting rod and connected to the gear 133, and the return torsion spring 132 provides a clockwise return force when the gear 133 rotates counterclockwise; the limit handle 135 is connected to the push rod 131 through the limit torsion spring 134, and can rotate and snap into the tooth groove of the gear 133 to limit the return of the gear 133; the push block 136 is fixed to the lower part of the push rod 131 and is used to push the surgical suture 4.

[0030] Specifically, the upper part of the push rod 131 is made of stainless steel, and the handle and the gear connecting rod are formed by an integral molding process. The length of the gear connecting rod is 20 - 30 mm; the return torsion spring 132 is a spiral spring, installed between the gear connecting rod and the gear 133, and provides a return force of about 0.5 - 1 N; the limit handle 135 is of an "L" - shaped structure, the length of the long end is 15 mm, and it can rotate about 30 degrees through the limit torsion spring 134. The short end is embedded in the tooth groove of the gear 133 at the equilibrium position to prevent the accidental return of the gear 133; the push block 136 is made of medical silicone rubber, with a thickness of 2 - 3 mm and a root groove width of 1 mm, which is convenient for clamping and pushing the surgical suture 4.

[0031] Please refer to the appendix Figure 2 - appendix Figure 8 , the syringe 14 is fixedly connected to the second stapler housing 12, the bottom has a bending angle for guiding the surgical suture 4, and long strip - shaped narrow grooves are provided on both sides of the root. The long strip - shaped narrow grooves allow the suture 41 to escape under external force but cannot escape in the natural state; the width of the stop strip 42 is greater than the width of the narrow groove, and it can only be pushed out from the inside of the syringe 14 by the push block 136.

[0032] Specifically, the bottom of the syringe 14 has a bending angle of 15 - 30 degrees, a length of 40 - 50 millimeters, and an inner diameter of 2 - 3 millimeters to ensure smooth guiding of the surgical suture 4 under the intervertebral disc tissue 5; the length of the long and narrow groove is 10 - 15 millimeters, and the width is 0.5 - 0.8 millimeters, allowing the suture 41 to escape when pulled by an external force; the stop bar 42 is in the shape of a rectangular sheet, with a thickness of 0.5 millimeters and a width of 3 - 5 millimeters, and is fixed at both ends of the suture 41 by winding to ensure that it can only be pushed out by the push block 136 in the syringe 14 and cannot escape from the narrow groove.

[0033] Please refer to Appendix Figure 1 , Appendix Figure 9 and Appendix Figure 11 , the device can be easily moved and can be operated by hand, and only one surgical suture 4 is required to complete the suture of the annulus fibrosus 51 of the intervertebral disc.

[0034] Specifically, the overall weight of the UBE surgical annulus fibrosus suture device does not exceed 200 grams, and the dimensions are 150 millimeters in length and 50 millimeters in width, which is convenient for single-handed holding during the operation; it is operated through the handle 111, and only one surgical suture 4 is used to complete the closure of the annulus fibrosus 51. The length of the suture 41 is 50 - 80 centimeters, which adapts to the sizes of different intervertebral disc tissues 5 and reduces the need to replace the suture during the operation.

[0035] Please refer to Appendix Figure 9 - Appendix Figure 21 , a knotless suture method, includes the following steps: S1. Insert the syringe 14 of the second suturing device 2 under the left intervertebral disc tissue 5 of the annulus fibrosus 51, push out the middle part of the surgical suture 4 through the push rod assembly 13 to form a coil and move it under the right intervertebral disc tissue 5 of the annulus fibrosus 51, and then pull out the second suturing device 2; S2. Insert the syringe 14 of the first suturing device 1 under the right intervertebral disc tissue 5 of the annulus fibrosus 51, penetrate into the coil formed in step S1, push out the right part of the surgical suture 4 through the push rod assembly 13 until the right stop bar 42 is located below the coil, and then pull out the first suturing device 1; S3. Pull the third suturing device 3 to tighten the surgical suture 4, and the coil is stuck under the intervertebral disc tissue 5 of the annulus fibrosus 51 under the action of the stop bar 42 to close the annulus fibrosus 51; S4. In the state where the surgical suture 4 is tightened, insert the syringe 14 of the third suturing device 3 under the intervertebral disc tissue 5 at other positions of the intervertebral disc, push out the left part of the surgical suture 4 until the left stop bar 42 is stuck under the intervertebral disc tissue 5, and then pull out the third suturing device 3 to complete the knotless suture.

[0036] Specifically, in S1, the syringe barrel 14 of the stapler two 2 penetrates to a depth of 5 - 10 mm, and the push rod assembly 13 pushes about 20 - 30 mm in the middle of the surgical suture 4, forms a coil and then moves to the right along the bending direction of the bottom of the syringe barrel 14; in S2, the penetration angle of the syringe barrel 14 of the stapler one 1 forms an angle of 30 - 45 degrees with the plane of the annulus fibrosus 51 to ensure the accuracy of penetrating the coil, and after the right stop bar 42 is pushed out, its position is about 2 - 3 mm lower than the coil plane; in S3, when pulling the stapler three 3, a pulling force of about 1 - 2 N is applied to tighten the coil and drive the annulus fibrosus 51 to close, and the contact area between the stop bar 42 and the tissue 5 is about 10 - 15 square millimeters; in S4, the penetration position of the stapler three 3 is spaced 5 - 10 mm from the initial penetration point, and after the left stop bar 42 is pushed out, it is ensured to be firmly stuck under the tissue 5, and the closing gap of the annulus fibrosus 51 is less than 1 mm after suture.

[0037] Please refer to the appendix Figure 21 , and it also includes the surgical suture 4 being interspersed and fixed above and below the intervertebral disc tissue 5, without knot formation, to avoid the interference of knots on neurons.

[0038] Specifically, the interspersed path length of the surgical suture 4 above and below the intervertebral disc tissue 5 is 20 - 30 mm, and after fixation, a "Z" - shaped structure is formed. The knot - free fixation is achieved by the mutual pressing of the stop bar 42 and the coil, eliminating the potential compression risk of about 2 - 3 mm of the knot height in the traditional knot - tying method to neurons.

[0039] Please refer to the appendix Figure 2 , and the push rod assembly 13 can stop the operation at any time through mechanical control.

[0040] Specifically, the mechanical control of the push rod assembly 13 is achieved through the limit handle 135. During the operation, pressing the limit handle 135 can make the push rod 131 pause at any position, and the pause accuracy is within 1 mm. When resetting, the push rod 131 automatically returns to the initial position under the action of the reset torsion spring 132, ensuring the safety and controllability of the operation.

[0041] Please refer to the appendix Figure 8 , and the fixed position of the stop bar 42 can be freely adjusted according to the state of the intervertebral disc tissue 5 to protect the annulus fibrosus 51 and improve the suture quality.

[0042] Specifically, the fixed position of the stop bar 42 can be adjusted according to the thickness and hardness of the intervertebral disc tissue 5. When the tissue thickness is 3 - 5 mm, the fixed depth of the stop bar 42 is 2 - 3 mm; by adjusting the penetration angle and the pushing - out distance of the stapler three 3 in S4, the stop bar 42 is kept at a distance of 1 - 2 mm from the edge of the annulus fibrosus 51, avoiding damage to the surrounding tissue of the annulus fibrosus 51 and enhancing the suture strength.

[0043] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A UBE surgical annulus suture device, characterized in that: It comprises a stapler 1 (1), a stapler 2 (2), a stapler 3 (3) and a surgical suture (4); The suture device 1 (1), suture device 2 (2) and suture device 3 (3) all comprise a suture device housing 1 (11), a suture device housing 2 (12), a push rod assembly (13) and a syringe (14); the suture device housing 1 (11) and the suture device housing 2 (12) are connected by interference fit via a connecting pin (121) and a connecting hole (114); the lower part of the push rod assembly (13) is placed in the syringe (14) and can move freely, and the upper part is connected to the suture device housing 2 (12) via a gear (133) and a rack (122) to move up and down, and is restricted from moving left and right by a slideway (112) on the suture device housing 1 (11); the syringe (14) is fixedly connected to the suture device housing 2 (12); The surgical suture (4) comprises a suture (41) and a stopper strip (42); both ends of the suture (41) are fixedly wound around the stopper strip (42); the stopper strip (42) is used to play a stopping role under the intervertebral disc fiber ring (51).

2. The UBE surgical fiber ring suture device according to claim 1, characterized in that: The stapler housing (11) comprises a handle (111), a slide (112), a stop block (113) and a connecting hole (114); the handle (111) is integrally formed with the stapler housing (11) for handheld operation; the slide (112) is used for limiting and guiding the push rod assembly (13); the connecting hole (114) is interference-fitted with a connecting pin (121) of the stapler housing (12); the stop block (113) is fixedly connected to the stapler housing (11) for fixing the syringe (14) and the guide column (123).

3. The UBE surgical annulus suture device according to claim 1, characterized in that: The second suture device housing (12) comprises a rack (122), a guide column (123), a second limit block (124) and a syringe hole (125); the rack (122) is fixedly connected to the second suture device housing (12) and forms a moving pair with the gear (133) of the push rod assembly (13); the guide column (123) is fixedly connected to the second limit block (124) and the second suture device housing (12) for supporting and positioning; the syringe hole (125) is used to guide and limit the syringe (14).

4. The UBE surgical annulus suture device according to claim 1, characterized in that: The push rod assembly (13) comprises a push rod (131), a reset torsion spring (132), a gear (133), a limit torsion spring (134), a limit handle (135) and a push block (136); the upper portion of the push rod (131) is integrally formed with a limit handle (135) and a gear connecting rod, the gear connecting rod is mounted with a reset torsion spring (132) and connected to the gear (133), the reset torsion spring (132) provides a clockwise reset force when the gear (133) rotates counterclockwise; the limit handle (135) is connected to the push rod (131) via the limit torsion spring (134), and can be rotated and engaged with the tooth groove of the gear (133) to limit the reset of the gear (133); the push block (136) is fixed to the lower portion of the push rod (131) and is used to push the surgical suture (4).

5. The UBE surgical annulus suture device according to claim 1, characterized in that: The needle barrel (14) is fixedly connected to the second suture device housing (12), and has a bending angle at the bottom for guiding the surgical suture (4). Long strip grooves are provided on both sides of the root, and the long strip grooves allow the suture (41) to slip out under the action of external force but cannot slip out in a natural state; the width of the stop strip (42) is greater than the width of the groove, and can only be pushed out from the inside of the needle barrel (14) by the push block (136).

6. The UBE surgical annulus suture device according to claim 1, characterized in that: The device is portable and can be operated by hand, and only one surgical suture (4) is required to complete the suturing of the intervertebral disc annulus (51).

7. A knot-free suturing method, characterized in that: The fiber ring suturing device for UBE surgery according to claim 1 comprises the following steps: S1, inserting the needle barrel (14) of the second suture device (2) into the intervertebral disc tissue (5) on the left side of the annulus fibrosus (51), pushing out the middle part of the surgical suture (4) through the push rod assembly (13), forming a coil and moving it to the intervertebral disc tissue (5) on the right side of the annulus fibrosus (51), and then pulling out the second suture device (2); S2, inserting the needle barrel (14) of the suture device (1) into the right side of the intervertebral disc tissue (5) under the annulus fibrosus (51), and into the coil formed in step S1, and pushing out the right side portion of the surgical suture (4) through the push rod assembly (13) until the right side stop strip (42) is located below the coil, and then pulling out the suture device (1); S3, pulling the suture device three (3) to tighten the surgical suture (4), and the coil is stuck under the annulus fibrosus (51) intervertebral disc tissue (5) under the action of the stop bar (42) and closes the annulus fibrosus (51); S4. When the surgical suture (4) is in a taut state, the needle tube (14) of the suture device three (3) is inserted into the intervertebral disc tissue (5) at other locations of the intervertebral disc, and the left part of the surgical suture (4) is pushed out until the left stopper strip (42) is stuck under the intervertebral disc tissue (5), and then the suture device three (3) is pulled out to complete the knot-free suture.

8. The knot-free suturing method according to claim 7, characterized in that: The method also includes inserting and fixing the surgical suture (4) in the intervertebral disc tissue (5) up and down without forming any knots, thereby avoiding the interference of the knots on the neurons.

9. The knot-free suturing method according to claim 7, characterized in that: The push rod assembly (13) can stop operating at any time through mechanical control.

10. The knot-free suturing method according to claim 7, characterized in that: The fixing position of the stop strip (42) can be freely adjusted according to the state of the intervertebral disc tissue (5), thereby protecting the annulus fibrosus (51) and improving the suturing quality.

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