Wire cutting-free wire locking device and valve ring repairing system

Abstract

The invention discloses a thread cutting-free thread locking device and a valve ring repair system, and relates to the technical field of medical instruments, and the scheme is that the thread cutting-free thread locking device comprises a rotating structure which is provided with a first through hole penetrating in the radial direction; the width of the threading piece is smaller than the diameter of the first through hole, the length of the threading piece is larger than the diameter of the first through hole, and one end of a first locking wire is fixedly connected to the threading piece; a second through hole is formed in the threading piece, the second through hole is formed close to one end of the threading piece, a second locking line penetrates through the second through hole, the two ends of the second locking line are movable ends, and the second locking line is used for enabling the threading piece to penetrate through the first through hole; when the other end of the first locking wire is fixed and the rotating structure rotates, the first locking wire is pulled to enable the threading sheet to be parallel to the side wall of the rotating structure and abut against the side wall of the rotating structure. According to the arrangement, the threading piece and the rotating structure are limited so that the first locking line can be tensioned, after tensioning, the second locking line is withdrawn from the body to achieve the line-cutting-free effect, and by synchronously pulling the two ends of the first locking line, the valve ring can be shrunk evenly.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a thread-locking device without trimming and an annuloplasty system. Background Art

[0002] At present, mitral insufficiency mainly has two treatment methods: drug treatment and surgical treatment. Surgical treatment is divided into edge-to-edge repair, annuloplasty, and chordae tendineae repair. For annuloplasty, doctors nail multiple groups of nailing devices on the annulus and tighten the nailing devices through a thread-locking device to contract the annulus tissue and achieve annuloplasty. However, when the existing thread-locking device uses a locking thread to connect multiple nailing devices in series, it is necessary to cut the excess locking thread and perform a buttoning operation to fix the locking thread. However, the vision in the body is poor, and the operation depends entirely on the doctor's experience, resulting in a slow operation time. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides a thread-locking device without trimming and an annuloplasty system.

[0004] To achieve the above object, a thread-locking device without trimming of the present invention includes: A rotating structure, on which a first through hole radially penetrating is provided; A threading piece, the width of which is smaller than the diameter of the first through hole and the length of which is larger than the diameter of the first through hole, and one end of a first locking thread is fixedly connected to the threading piece; A second through hole is provided on the threading piece, and the second through hole is provided near one end of the threading piece. The second through hole is for a second locking thread to pass through, and both ends of the second locking thread are movable ends. The second locking thread is used to enable the threading piece to pass through the first through hole; When the other end of the first locking thread is fixed and the rotating structure rotates, the first locking thread is pulled to make the threading piece parallel to and abut against the side wall of the rotating structure. The threading piece is used to enable the first locking thread to be tightened.

[0005] Preferably, a thread-locking device without trimming of the present invention further includes a first limiting structure, a second limiting structure, and a first supporting structure; The first supporting structure is arranged on the nailing device, and the rotating structure axially penetrates the first supporting structure; The first limiting structure radially penetrates the rotating structure, and both ends of the first limiting structure extend out of the side wall of the rotating structure; The second limiting structure is disposed on the side wall of the first support structure in the axial direction. When the rotating structure is in the initial state, the first limiting structure and the second limiting structure are respectively located on both sides of the first support structure. When the first limiting structure and the second limiting structure are on the same side, the first limiting structure and the second limiting structure are used to limit the circumferential rotation of the rotating structure.

[0006] Preferably, the first limiting structure includes a first limiting portion and a second limiting portion. One end of the first limiting portion and the second limiting portion are connected at an angle, and the distance between the other ends of the first limiting portion and the second limiting portion that are away from each other is greater than the diameter of the rotating structure. When the rotating structure axially moves in the direction close to the first support structure, the first limiting portion and the second limiting portion are squeezed to contract into the rotating structure. When the first limiting structure moves out of the first support structure, the first limiting portion and the second limiting portion are reset and abut against the side wall of the first support structure in the axial direction to limit the reverse axial movement of the rotating structure.

[0007] Preferably, the second limiting structure protrudes from the set surface. A plurality of second limiting structures are provided and are circumferentially spaced along the side wall of the first support structure. When the first limiting structure extends out of the first support structure, the first limiting portion and the second limiting portion extend and are located between two second limiting structures. The side wall of the first support structure in the axial direction is used to limit the reverse axial movement of the first limiting structure, and the second limiting structure is used to limit the circumferential rotation of the first limiting structure.

[0008] Preferably, a first slot and a second slot are provided on the rotating structure. The first slot and the second slot are perpendicularly arranged. The first slot is for the first limiting structure to be inserted, and the second slot is for a first pin to be inserted. When the first pin is inserted into the second slot, the first pin is clamped between the first limiting portion and the second limiting portion, and the first pin is used to prevent the first limiting structure from moving out of the first slot.

[0009] Preferably, a plurality of second limiting structures are provided and are circumferentially and evenly arranged along the side wall of the first support structure in the axial direction. The second limiting structure includes a first side wall and a second side wall. The first side wall is perpendicularly arranged with the side wall of the first support structure in the axial direction, and the second side wall is connected with the side wall of the first support structure in the axial direction at an angle. Along the forward rotation direction of the rotating structure, the second side wall is located upstream of the first side wall. When the first limiting structure is located between the two second limiting structures, the first side wall is used to limit the reverse rotation of the rotating structure, and the second side wall is used to guide the forward rotation of the rotating structure.

[0010] Preferably, a plurality of the third limiting structures are provided and are evenly spaced along the circumferential side wall of the rotating structure. When the end of the spring tube of the wire locking device is inserted between two of the third limiting structures, the rotating structure is circumferentially limited with the spring tube of the wire locking device.

[0011] Preferably, an arc-shaped transition portion is provided between the surface of the third limiting structure facing the spring tube of the wire locking device and the two side surfaces. The arc-shaped transition portion is used to guide the end of the spring tube of the wire locking device to be inserted between the two third limiting structures.

[0012] To achieve the above object, a kind of annulus repair system of the present invention includes a wire locking device without cutting wires as described above, and further includes a stapling device, a first locking wire, a second locking wire and a spring tube of the wire locking device; A plurality of the stapling devices are provided and are successively stapled into the annulus tissue. The wire locking device is installed on the two stapling devices located at the outermost ends among the plurality of stapling devices. The first locking wire successively connects the plurality of stapling devices in series; Both ends of the first locking wire are fixed to the wire threading pieces on the two wire locking devices. The second locking wire passes through one end of the wire threading piece. The spring tube of the wire locking device is circumferentially and limitedly connected to the rotating structure; The annulus repair system is used to control the wire threading piece to pass through the rotating structure through the second locking wire, and to simultaneously tighten both ends of the first locking wire by synchronously controlling the rotation of the two spring tubes of the wire locking device so that the plurality of stapling devices approach each other.

[0013] Based on this, the beneficial effects of the present invention are as follows: Through the solution of the present invention, by providing a wire threading piece, the end of the first locking wire for connecting a plurality of stapling devices in series is fixedly connected to the wire threading piece, and the second locking wire is provided to pass through one end of the wire threading piece. Both ends of the second locking wire are located outside the body and can be controlled by a doctor. The first locking wire and the wire threading piece are located inside the body. When performing the locking operation, the second locking wire is controlled to make the wire threading piece pass through the rotating structure along the first through hole, and the rotating structure is controlled to rotate to tighten the first locking wire. At this time, the wire threading piece stands up and fits the rotating structure through the pulling of the first locking wire and the second locking wire, realizing the fixation of the end of the first locking wire. At this time, by pulling one end of the second locking wire, the whole second locking wire is separated from the wire threading piece to complete the evacuation. In this way, the fixation of the first locking wire and the rotating structure can be realized without performing wire cutting and buttoning operations inside the body, achieving the effect of no wire cutting. Description of the Drawings

[0014] Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings: Figure 1 Schematic structural diagram of a thread-locking device showing an embodiment of the present invention; Figure 2 Schematic structural diagram of a threading piece showing an embodiment of the present invention; Figure 3 Schematic structural diagram of a rotating structure showing an embodiment of the present invention; Figure 4 Schematic structural diagram of a first limiting structure showing an embodiment of the present invention; Figure 5 Schematic structural diagram of a first supporting structure showing an embodiment of the present invention; Figure 6 Schematic structural diagram of an annuloplasty system showing an embodiment of the present invention; Explanation of reference numerals: 10 - rotating structure, 101 - first through hole, 102 - first slot, 103 - second slot, 104 - first pin, 105 - third limiting structure, 1051 - arc transition part, 20 - threading piece, 201 - second through hole, 30 - first limiting structure, 301 - first limiting part, 302 - second limiting part, 303 - arc groove, 40 - second limiting structure, 401 - first side wall, 402 - second side wall, 50 - first supporting structure, 60 - first locking wire, 70 - second locking wire, 80 - stapling device, 90 - lock wire spring tube. Detailed implementation manners

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0016] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "said", and "the" used in the embodiments of the present application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0017] It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe related structures, these related structures should not be limited to these terms. These terms are only used to distinguish the related structures from each other.

[0018] Depending on the context, as used herein, the term "if" may be interpreted as "when" or "while". Similarly, depending on the context, the phrase "if it is determined" may be interpreted as "when it is determined" or "when detecting (the stated condition or event)".

[0019] It should be noted that the orientation terms such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described from the angles shown in the drawings, and should not be construed as limitations on the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is formed "on" or "under" another element, it can not only be directly formed "on" or "under" another element, but also be indirectly formed "on" or "under" another element through an intermediate element.

[0020] Figure 1 Schematic structural diagram of a thread-locking device showing an embodiment of the present invention Figure 2 Schematic structural diagram of a threading piece showing an embodiment of the present invention Figure 3 Schematic structural diagram of a rotating structure showing an embodiment of the present invention. As Figures 1-3 shown, a thread-locking device without cutting threads of the present invention includes: A rotating structure 10, on which a first through hole 101 radially penetrating is provided; A threading piece 20, the width of which is smaller than the diameter of the first through hole 101 and the length of which is larger than the diameter of the first through hole 101. One end of a first locking wire 60 is fixedly connected to the threading piece 20; A second through hole 201 is provided on the threading piece 20. The second through hole 201 is provided near one end of the threading piece 20. The second through hole 201 is for a second locking wire 70 to pass through, and both ends of the second locking wire 70 are movable ends. The second locking wire 70 is used to enable the threading piece 20 to pass through the first through hole 101; When the other end of the first locking wire 60 is fixed and the rotating structure 10 rotates, the first locking wire 60 is pulled to make the threading piece 20 parallel to and abut against the side wall of the rotating structure 10. The threading piece 20 is used to enable the first locking wire 60 to be tightened.

[0021] Specifically, the end of the rotating structure 10 is circumferentially limitedly connected to the spring tube 90 of the thread-locking device. The doctor controls the rotation of the spring tube 90 of the thread-locking device to further control the rotation of the rotating structure 10, so that the first locking wire 60 is wound around the rotating structure 10 and the first locking wire 60 is tightened.

[0022] In the traditional technology, in order to prevent the first locking wire 60 from directly detaching from the rotating structure 10 when it is tightened, it is necessary to cut off the excess first locking wire 60 at the end, and fix the end of the first locking wire 60 to the rotating structure 10 by tying a knot, so as to realize that when the first locking wire 60 is tightened, multiple stapling devices 80 approach and contract the valve annulus tissue; In this method, both wire cutting and knot tying need to be performed inside the body. Poor vision inside the body requires the doctor to operate based on experience. The operation is cumbersome and wastes surgical time. Improper cutting is likely to result in a large amount of thread remaining, which is easily wound around the rotating structure 10 during rotation and causes jamming, affecting surgical treatment.

[0023] In this application, by setting the wire threading piece 20, the end of the first locking wire 60 is pre-fixed to it, and the second locking wire 70 is used to control the movement of the wire threading piece 20 through the first through hole 101. At the same time, since the second locking wire 70 is connected to one end of the wire threading piece 20, when the second locking wire 70 is pulled, the wire threading piece 20 can stand up. Since the length of the wire threading piece 20 is greater than the diameter of the first through hole 101, when the first locking wire 60 is pulled and the wire threading piece 20 is driven to move, it will abut against the first through hole 101 and achieve limit, thus realizing the tightening effect of the first locking wire 60. After tightening, by pulling one of the two ends of the second locking wire 70 outside the body, the second locking wire 70 moves along the second through hole 201 until the other end detaches from the second through hole 201 and is withdrawn from the body as a whole, completing "wire cutting".

[0024] With such a setting, only by simply pulling one end of the second locking wire 70 can the "wire cutting" operation be realized, without the doctor manually operating cutting and knot tying inside the body, reducing cumbersome operations to relieve the doctor's burden, reducing surgical time and improving surgical efficiency.

[0025] Furthermore, Figure 4 The structural schematic diagram of the first limiting structure showing an embodiment of the present invention, Figure 5 The structural schematic diagram of the first supporting structure showing an embodiment of the present invention, as Figures 1-5 shown: A wire locking device without wire cutting of the present invention further includes a first limiting structure 30, a second limiting structure 40 and a first supporting structure 50; The first supporting structure 50 is arranged on the stapling device 80, the rotating structure 10 axially penetrates through the first supporting structure 50, the first limiting structure 30 radially penetrates through the rotating structure 10, and both ends of the first limiting structure 30 extend out of the side wall of the rotating structure 10; The second limiting structure 40 is arranged on the side wall of the first supporting structure 50 in the axial direction. When the rotating structure 10 is in the initial state, the first limiting structure 30 and the second limiting structure 40 are respectively located on both sides of the first supporting structure 50. When the first limiting structure 30 and the second limiting structure 40 are on the same side, the first limiting structure 30 and the second limiting structure 40 are used to limit the circumferential rotation of the rotating structure 10.

[0026] Specifically, the first limiting structure 30 includes a first limiting part 301 and a second limiting part 302. One end of the first limiting part 301 and the second limiting part 302 is connected at an angle, and the distance between the mutually remote ends of the first limiting part 301 and the second limiting part 302 is greater than the diameter of the rotating structure 10. When the rotating structure 10 axially moves towards the direction close to the first supporting structure 50, the first limiting part 301 and the second limiting part 302 are squeezed and contracted into the rotating structure 10. When the first limiting structure 30 moves out of the first supporting structure 50, the first limiting part 301 and the second limiting part 302 reset and abut against the side wall of the first supporting structure 50 in the axial direction to limit the reverse axial movement of the rotating structure 10.

[0027] Furthermore, a plurality of second limiting structures 40 are arranged and are circumferentially and uniformly arranged along the side wall of the first supporting structure 50 in the axial direction. The second limiting structure 40 includes a first side wall 401 and a second side wall 402. The first side wall 401 is perpendicularly arranged with the side wall of the first supporting structure 50 in the axial direction, and the second side wall 402 is connected with the side wall of the first supporting structure 50 at an angle. Along the forward rotation direction of the rotating structure 10, the second side wall 402 is located upstream of the first side wall 401. When the first limiting structure 30 is located between two second limiting structures 40, the first side wall 401 is used to limit the reverse rotation of the rotating structure 10, and the second side wall 402 is used to guide the forward rotation of the rotating structure 10.

[0028] With such a setting, in the way that the wire locking device is arranged at the center of two nailing devices 80 in the traditional technology, when the wire locking device tightens the first locking wire 60, the first locking wire 60 is pulled at both ends at the same time. In this way, the wire locking device may be skewed, resulting in that the two nailing devices 80 and the wire locking device are not collinear after locking, and the locking is incomplete, which may cause part of the expansion of the valve annulus and affect the contraction effect of the valve annulus. However, in the present invention, by arranging the first supporting structure 50 on the nailing device 80, the rotating structure 10 is installed at the nailing device 80. When the rotating structure 10 rotates, the first locking wire 60 can be pulled from one of the two nailing devices 80 to the other, which can make the first locking wire 60 become a straight line and ensure the stability of the valve annulus contraction effect.

[0029] Meanwhile, through the structural arrangement that one end of the first limiting part 301 is angularly connected to one end of the second limiting part 302 and the other ends are away from each other, it has elasticity. When the rotating structure 10 axially moves towards the direction close to the first supporting structure 50, the first limiting part 301 and the second limiting part 302 are gradually compressed and then retracted into the rotating structure 10, enabling it to smoothly pass through the first supporting structure 50. When the first limiting structure 30 passes through, the first limiting part 301 and the second limiting part 302 are ejected from the side wall of the rotating structure 10 under the action of elastic force, and then abut against the axial side wall of the first supporting structure 50 to prevent the rotating structure 10 from moving axially in the reverse direction.

[0030] And when the first limiting structure 30 passes through, the first limiting part 301 and the second limiting part 302 are respectively located in two second limiting structures 40, and the first side wall 401 abuts against the first limiting part 301 and the second limiting part 302, thereby restricting the reverse circumferential rotation of the rotating structure 10, and further achieving the effect of continuously tightening the first locking wire 60. If the first locking wire 60 is not tightened completely, through the setting of the inclined surface of the second side wall 402, the rotating structure 10 can be further rotated circumferentially in the positive direction to further tighten the first locking wire 60, giving an adjustable space.

[0031] Furthermore, as Figure 3 shown, a first slot 102 and a second slot 103 are provided on the rotating structure 10. The first slot 102 and the second slot 103 are arranged perpendicular to each other. The first slot 102 is for the insertion of the first limiting structure 30, and the second slot 103 is for the insertion of the first pin 104; When the first pin 104 is inserted into the second slot 103, the first pin 104 is clamped between the first limiting part 301 and the second limiting part 302, and the first pin 104 is used to prevent the first limiting structure 30 from moving out of the first slot 102.

[0032] Specifically, an arc-shaped groove 303 is provided between the first limiting part 301 and the second limiting part 302. After the first limiting structure 30 is inserted into the first slot 102, by inserting the first pin 104 into the second slot 103 and making the first pin 104 inserted into the arc-shaped groove 303, the first limiting structure 30 can be limited in multiple directions, realizing the fixation of the first limiting structure 30.

[0033] Furthermore, a protruding third limiting structure 105 is provided on the rotating structure 10. The third limiting structure 105 is arranged on the side of the first limiting structure 30 close to the first supporting structure 50; The third limiting structure 105 is used for circumferentially limiting connection with the lock wire spring tube 90, so that the lock wire spring tube 90 controls the rotation of the rotating structure 10.

[0034] Specifically, a plurality of third limiting structures 105 are provided and are evenly spaced along the circumferential side wall of the rotating structure 10. When the spring tube 90 of the thread locking device is inserted between two third limiting structures 105, the rotating structure 10 is circumferentially and limit-connected to the spring tube 90 of the thread locking device. Furthermore, the rotation of the rotating structure 10 can be controlled through the spring tube 90 of the thread locking device, so as to wind and tighten the first locking wire 60.

[0035] Meanwhile, an arc-shaped transition portion 1051 is provided between the surface of the third limiting structure 105 facing the spring tube 90 of the thread locking device and its two side surfaces. The arc-shaped transition portion 1051 can be set as a circular arc surface or an inclined surface. After the spring tube 90 of the thread locking device abuts against the third limiting structure 105, due to poor visibility inside the body, it is difficult to insert the end of the spring tube 90 of the thread locking device between the two third limiting structures 105. At this time, the distance between the two third limiting structures 105 is increased through the setting of the arc-shaped transition portion 1051, thereby assisting the end of the spring tube 90 of the thread locking device to be quickly aligned and inserted, and completing the circumferential limiting connection between the spring tube 90 of the thread locking device and the rotating structure 10.

[0036] Similarly, a protruding insertion block (not marked in the figure) is provided at the end of the spring tube 90 of the thread locking device, and a same auxiliary insertion structure (not marked in the figure) is provided between the surface of the insertion block facing the third limiting structure 105 and its two side surfaces, so as to facilitate the quick alignment of the two.

[0037] Furthermore, Figure 6 The schematic structural diagram of a kind of annulus repair system according to an embodiment of the present invention is schematically shown. As Figure 6 shown, the present invention also provides a kind of annulus repair system, which includes the above-mentioned thread locking device without cutting the thread, and also includes a stapling device 80, a first locking wire 60, a second locking wire 70 and a spring tube 90 of the thread locking device; A plurality of stapling devices 80 are provided and are successively stapled into the annulus tissue. The thread locking device is installed on the two outermost stapling devices 80 among the plurality of stapling devices 80. The first locking wire 60 successively connects a plurality of stapling devices 80 in series, and both ends of the first locking wire 60 are fixed on the wire threading pieces 20 in the two thread locking devices. The second locking wire 70 passes through one end of the wire threading piece 20, and the spring tube 90 of the thread locking device is circumferentially and limit-connected to the rotating structure 10.

[0038] When performing annulus repair surgery, the stapling device 80 is controlled to sequentially staple into the annulus tissue to complete fixation, and a wire locking device is installed on the stapling devices 80 at both ends of the entire stapling device 80. The first locking wire 60 sequentially passes through a plurality of stapling devices 80. One end thereof is fixed to the rotating structure 10 of one of the wire locking devices, and the other end is fixed to the wire threading piece 20. By the doctor simultaneously pulling both ends of the second locking wire 70, the wire threading piece 20 is controlled to pass through the rotating structure 10. When the rotating structure 10 is rotated to tighten the first locking wire 60, through the adjustment of the second locking wire 70, the wire threading piece 20 stands up parallel to the rotating structure 10 and abuts against its side wall, realizing the fixation of the end of the first locking wire 60. When the two rotating structures 10 rotate synchronously, the first locking wire 60 is straightened to control the plurality of stapling devices 80 to approach each other, thereby realizing annulus contraction. At this time, the rotating structure 10 is controlled to axially move to realize locking, and one end of the second locking wire 70 is pulled outside the body, so that the other end moves out of the wire threading piece 20 and is withdrawn from the body as a whole to realize "wire cutting", and the annulus repair surgery is completed.

[0039] In summary, through the setting of the wire threading piece 20, one end of the first locking wire 60 is fixed thereto, and one end of the wire threading piece 20 passes through the second locking wire 70. When the first locking wire 60 is tightened, the wire threading piece 20 can realize the fixation of its end, and by pulling one end of the second locking wire 70, the second locking wire 70 is withdrawn, realizing the "wire-free cutting" operation, avoiding the complex and cumbersome operations of the doctor manually cutting the wire and tying the first locking wire 60 at one end during the operation, reducing the doctor's burden and improving the surgical efficiency.

[0040] The above description is only a preferred embodiment of the present application. Those skilled in the art should understand that the disclosed scope in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A thread-locking device that does not require thread cutting, characterized in that, Comprising: A rotating structure, on which a first through hole radially penetrating is provided; A wire threading piece, the width of which is smaller than the diameter of the first through hole and the length of which is larger than the diameter of the first through hole, and one end of a first locking wire is fixedly connected to the wire threading piece; A second through hole is provided on the wire threading piece, the second through hole is arranged near one end of the wire threading piece, the second through hole is for a second locking wire to pass through, and both ends of the second locking wire are movable ends, and the second locking wire is for enabling the wire threading piece to pass through the first through hole; When the other end of the first locking wire is fixed and the rotating structure rotates, the first locking wire is pulled to make the wire threading piece parallel to and abut against the side wall of the rotating structure, and the wire threading piece is for enabling the first locking wire to be tightened.

2. A thread-locking device without thread cutting according to claim 1, characterized in that, Further comprising a first limiting structure, a second limiting structure and a first supporting structure; The first supporting structure is arranged on the nailing device, and the rotating structure axially penetrates through the first supporting structure; The first limiting structure radially penetrates through the rotating structure, and both ends of the first limiting structure extend out of the side wall of the rotating structure; The second limiting structure is arranged on the side wall axially of the first supporting structure. When the rotating structure is in an initial state, the first limiting structure and the second limiting structure are respectively located on both sides of the first supporting structure. When the first limiting structure and the second limiting structure are on the same side, the first limiting structure and the second limiting structure are for limiting the circumferential rotation of the rotating structure.

3. A thread-locking device without thread cutting according to claim 2, characterized in that, The first limiting structure comprises a first limiting portion and a second limiting portion. One end of the first limiting portion and the second limiting portion are angularly connected, and the distance between the mutually separated ends of the first limiting portion and the second limiting portion is larger than the diameter of the rotating structure; When the rotating structure axially moves towards the direction close to the first supporting structure, the first limiting portion and the second limiting portion are squeezed to contract into the rotating structure. When the first limiting structure moves out of the first supporting structure, the first limiting portion and the second limiting portion reset and abut against the side wall axially of the first supporting structure to limit the reverse axial movement of the rotating structure.

4. A thread-locking device without thread cutting according to claim 3, characterized in that The second limiting structure protrudes from the set surface. A plurality of the second limiting structures are provided and are circumferentially spaced along the side wall of the first supporting structure. When the first limiting structure extends out of the first supporting structure, the first limiting portion and the second limiting portion extend and are located between two second limiting structures; The side wall axially of the first supporting structure is for limiting the reverse axial movement of the first limiting structure, and the second limiting structure is for limiting the circumferential rotation of the first limiting structure.

5. A thread-locking device without cutting threads according to claim 3, characterized in that, A first slot and a second slot are provided on the rotating structure. The first slot and the second slot are perpendicularly arranged. The first slot is for the first limiting structure to be inserted into, and the second slot is for a first pin to be inserted into; When the first pin is inserted into the second slot, the first pin is clamped between the first limiting portion and the second limiting portion, and the first pin is for preventing the first limiting structure from moving out of the first slot.

6. A thread-locking device without thread cutting according to claim 4, characterized in that, A plurality of the second limiting structures are provided and are circumferentially and uniformly arranged along the side wall axially of the first supporting structure; The second limiting structure includes a first side wall and a second side wall. The first side wall is perpendicularly arranged with respect to the side wall of the first support structure in the axial direction. The second side wall is angularly connected to the side wall of the first support structure in the axial direction. Along the forward rotation direction of the rotating structure, the second side wall is located upstream of the first side wall. When the first limiting structure is located between the two second limiting structures, the first side wall is used to limit the reverse rotation of the rotating structure, and the second side wall is used to guide the forward rotation of the rotating structure.

7. The thread-locking device without thread cutting according to claim 2, characterized in that, A protruding third limiting structure is provided on the rotating structure, and the third limiting structure is arranged on the side of the first limiting structure close to the first support structure. The third limiting structure is used for circumferentially limiting connection with the spring tube of the thread locking device, so that the spring tube of the thread locking device controls the rotation of the rotating structure.

8. The thread-locking device without thread cutting according to claim 7, wherein A plurality of the third limiting structures are provided and are evenly spaced along the circumferential side wall of the rotating structure. When the end of the spring tube of the thread locking device is inserted between two of the third limiting structures, the rotating structure and the spring tube of the thread locking device are circumferentially limited.

9. A thread-locking device without thread cutting according to claim 8, characterized in that, An arc-shaped transition portion is provided between the surface of the third limiting structure facing the spring tube of the thread locking device and its two side surfaces. The arc-shaped transition portion is used to guide the end of the spring tube of the thread locking device to be inserted between two of the third limiting structures.

10. An annulus repair system, characterized in that, It includes a thread locking device without wire cutting as described in any one of claims 1-9, and further includes a nailing device, a first locking wire, a second locking wire, and a spring tube of the thread locking device. A plurality of the nailing devices are provided and are successively nailed into the annulus tissue. The thread locking device is installed on the two outermost nailing devices among the plurality of nailing devices. The first locking wire successively connects a plurality of the nailing devices in series. One end of the first locking wire is fixed to the wire threading piece. The second locking wire passes through one end of the wire threading piece. The spring tube of the thread locking device is circumferentially limitedly connected to the rotating structure. The annulus repair system is used to control the wire threading piece to pass through the rotating structure through the second locking wire, and simultaneously tighten both ends of the first locking wire by synchronously controlling the rotation of the two spring tubes of the thread locking device to make the plurality of nailing devices approach each other.

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