A double-nail type nailing control component and an annulus repair system

Abstract

The present invention discloses a double-nail type nail driving control component and an annulus repair system, which relates to the technical field of medical devices. The solution includes: a mounting housing, a nail driving bending pipe, a nail driving spring pipe, and a positioning needle; the positioning needle is arranged in the nail driving spring pipe, the nail driving spring pipe is arranged in the nail driving bending pipe, the nail driving bending pipe is circumferentially and limit-connected with the mounting housing, the positioning needle axially penetrates through the mounting housing, and the positioning needle is used for positioning the nail driving position; two first through holes axially penetrating are arranged on the mounting housing, the first through holes are used for the nail driver to pass through, the nail driving spring pipe is in driving connection with the nail driver, and the nail driving spring pipe is used for controlling the synchronous axial movement of the two nail drivers. By rotating the nail driving spring pipe once, the device can simultaneously control the two nail drivers to nail into the annulus tissue, improving the nail driving efficiency; at the same time, by the way of the wire locking component to tighten the locking wires simultaneously from the two ends, the multiple nail driving control devices can be made to approach each other in the circumferential direction, realizing the contraction of the annulus tissue.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a double - nail type nail - driving control assembly and an annulus repair 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, annulus repair, and chordae tendineae repair. For annulus repair, doctors implant multiple anchor nails on the annulus one by one, and achieve annulus repair by tightening the anchor nails. However, the environment for implanting anchor nails is relatively harsh, and multiple implantations require doctors to spend a lot of energy, increasing the doctor's burden. Moreover, the operation time is relatively long, affecting the overall operation efficiency. Therefore, there is an urgent need to provide an efficient nail - driving structure. Summary of the Invention

[0003] In view of the above - mentioned defects or deficiencies in the prior art, the present invention provides a double - nail type nail - driving control assembly and an annulus repair system.

[0004] To achieve the above object, a double - nail type nail - driving control assembly of the present invention includes:

[0005] An installation housing, a nail - driving bending tube, a nail - driving spring tube, and a positioning pin;

[0006] The positioning pin is arranged in the nail - driving spring tube, the nail - driving spring tube is arranged in the nail - driving bending tube, the nail - driving bending tube is circumferentially and limitedly connected to the installation housing, the positioning pin axially penetrates the installation housing, and the positioning pin is used for positioning the nail - driving position.

[0007] Two first through - holes axially penetrating are arranged on the installation housing, the first through - holes are used for a nail - driver to pass through, the nail - driving spring tube is in transmission connection with the nail - driver, and the nail - driving spring tube is used for controlling the synchronous axial movement of the two nail - drivers.

[0008] Preferably, a first driving structure and a first limiting structure are arranged on the installation housing. The first driving structure and the first limiting structure are respectively located at two ends of the axial direction of the installation housing, and the first driving structure and the first limiting structure are located between the two first through - holes;

[0009] The first driving structure is circumferentially and limitedly connected to the nail - driving spring tube, the first driving structure is respectively in transmission connection with the two nail - drivers, the nail - driving spring tube is used for controlling the rotation of the first driving structure so that the two nail - drivers rotate synchronously, and the first limiting structure is used for converting the rotational movement of the nail - driver into axial movement.

[0010] Preferably, the stapler includes an anchor and a second driving structure. The anchor is fixedly connected to the second driving structure, and the second driving structure is meshed with the first driving structure;

[0011] A second through hole is provided on the first limiting structure. The second through hole is for the spiral part of the anchor to pass through. When the anchor rotates, the second through hole is used to guide the spiral part of the anchor to pass through, so that the anchor moves axially.

[0012] Preferably, there is one first driving structure, and the displacement difference between the centers of the two second through holes in the axial direction is half of the pitch of the anchor.

[0013] Preferably, a second limiting structure is provided between the first driving structure and the stapling spring tube. The second limiting structure includes a first limiting member provided on the first driving structure and a second limiting member provided at the end of the stapling spring tube;

[0014] When the first driving structure is connected to the stapling spring tube, the first limiting member is cooperatively connected with the second limiting member to circumferentially limit the first driving structure and the stapling spring tube.

[0015] Preferably, a third limiting structure is provided between the installation housing and the stapling bending tube. The third limiting structure includes a third limiting member and a fourth limiting member. The third limiting member and the fourth limiting member are provided at the end of the stapling bending tube and extend away from the stapling bending tube;

[0016] The third limiting member and the fourth limiting member are spaced apart. When the installation housing is connected to the stapling bending tube, the installation housing is located in the spaced space between the third limiting member and the fourth limiting member, and the third limiting member and the fourth limiting member respectively fit on both sides of the installation housing to circumferentially limit the installation housing and the stapling bending tube.

[0017] Preferably, a wire threading member is provided on the side wall of the installation housing, and the wire threading member protrudes from the installation surface;

[0018] A third through hole is provided on the wire threading member for the locking wire to pass through.

[0019] Preferably, a first end cover is further provided on the installation housing. The first end cover is installed on the side of the first driving structure away from the installation housing, and the first end cover is used to prevent pollutants from entering the rack on the circumferential side wall of the first driving structure.

[0020] Preferably, a fourth through hole is provided on the mounting shell, the fourth through hole is located between the two first through holes, the fourth through hole axially penetrates the mounting shell and the first driving structure, and the fourth through hole is used for the positioning needle to pass through.

[0021] To achieve the above object, the present invention further provides a valve ring repair system, comprising a double-nail nailing control assembly and a locking wire assembly as described above;

[0022] The double-nail nailing control assembly is used to control two nailers to nail into the valve annulus tissue synchronously;

[0023] The locking wire assembly is installed on the double-nail nailing control assemblies at the two ends of the multiple double-nail nailing control assemblies. The two locking wire assemblies are used to simultaneously tighten the locking wires so that the multiple double-nail nailing control assemblies are close to each other along the circumferential direction of the valve annulus tissue, so as to contract the valve annulus tissue.

[0024] Based on this, the beneficial effects of the present invention are:

[0025] According to the solution of the present invention, two first through holes are provided on the mounting housing, each of which is respectively used for a nail driver to pass through, and the nail spring tube is respectively connected to the two nail drivers in a transmission manner, so that when the nail spring tube is controlled to rotate, the two nail drivers can be simultaneously controlled to move axially to realize the nailing operation, thereby realizing the control of driving two groups of nails at a time. Compared with the solution of controlling the driving of one group of nails at a time in the prior art, the nailing efficiency can be effectively improved, thereby improving the surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 A schematic diagram schematically illustrates the structure of a nailing control assembly according to one embodiment of the present invention;

[0028] Figure 2 A schematic diagram schematically illustrates the structure of a mounting housing according to an embodiment of the present invention from a first viewing angle;

[0029] Figure 3 A schematic diagram schematically showing the structure of the installation housing of an embodiment of the present invention from a second viewing angle;

[0030] Figure 4 A schematic structural diagram schematically showing a second limiting structure according to an embodiment of the present invention;

[0031] Figure 5 A schematic structural diagram schematically showing a third limiting structure according to an embodiment of the present invention;

[0032] Figure 6 Schematic structural diagram showing an embodiment of the annulus repair system of the present invention;

[0033] Explanation of reference numerals: 10 - mounting housing, 101 - first through hole, 102 - stapler, 1021 - anchor bolt, 1022 - second driving structure, 103 - first driving structure, 104 - first limiting structure, 1041 - second through hole, 105 - wire threading member, 1051 - third through hole, 106 - first end cap, 107 - fourth through hole, 20 - stapling and bending pipe, 30 - stapling spring pipe, 40 - positioning pin, 50 - second limiting structure, 501 - first limiting member, 502 - second limiting member, 60 - third limiting structure, 601 - third limiting member, 602 - fourth limiting member, 70 - wire locking assembly. Detailed implementation manners

[0034] 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. Apparently, 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 protection scope of the present application.

[0035] 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", "the" and "said" used in the embodiments of the present application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0036] 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.

[0037] Depending on the context, the word "if" as used herein may be interpreted as "when" or "while". Similarly, depending on the context, the phrase "if determined" may be interpreted as "when determined" or "when detecting (the stated condition or event)".

[0038] 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.

[0039] Figure 1 Schematic structural diagram showing a nail - driving control component according to an embodiment of the present invention Figure 2 Schematic structural diagram showing a first perspective of an installation housing according to an embodiment of the present invention Figure 3 Schematic structural diagram showing a second perspective of an installation housing according to an embodiment of the present invention, as Figures 1-3 shown, a double - nail - type nail - driving control component of the present invention includes:

[0040] An installation housing 10, a nail - driving bending tube 20, a nail - driving spring tube 30, and a positioning pin 40;

[0041] The positioning pin 40 is arranged inside the nail - driving spring tube 30, the nail - driving spring tube 30 is arranged inside the nail - driving bending tube 20, the nail - driving bending tube 20 is circumferentially and limitedly connected to the installation housing 10, the positioning pin 40 axially penetrates through the installation housing 10, and the positioning pin 40 is used for positioning the nail - driving position;

[0042] Two axially - penetrating first through - holes 101 are provided on the installation housing 10, the first through - holes 101 are used for the nail - driver 102 to pass through, the nail - driving spring tube 30 is drivingly connected to the nail - driver 102, and the nail - driving spring tube 30 is used for controlling the synchronous axial movement of the two nail - drivers 102.

[0043] With such a setting, by providing two first through - holes 101 on the installation housing 10, the present invention can enable the two nail - drivers 102 to be installed on the installation housing 10. At the same time, through the driving connection between the nail - driving spring tube 30 and the two nail - drivers 102, when a doctor manipulates the nail - driving spring tube 30 to rotate, the synchronous axial movement of the two nail - drivers 102 can be controlled to achieve the nail - driving operation. Compared with the traditional technology where only one set of nails is driven in one operation, the nail - driving efficiency of the device of the present invention is higher, and the surgical efficiency can be further improved.

[0044] Furthermore, as Figure 2 、 3 shown, a first driving structure 103 and a first limiting structure 104 are provided on the installation housing 10. The first driving structure 103 and the first limiting structure 104 are respectively located at two axial ends of the installation housing 10, and the first driving structure 103 and the first limiting structure 104 are located between the two first through - holes 101;

[0045] The first driving structure 103 is circumferentially and limitedly connected to the nail - driving spring tube 30, the first driving structure 103 is respectively drivingly connected to the two nail - drivers 102, the nail - driving spring tube 30 is used for controlling the rotation of the first driving structure 103 to enable the two nail - drivers 102 to rotate synchronously, and the first limiting structure 104 is used for converting the rotational movement of the nail - driver 102 into an axial movement.

[0046] The nail driver 102 includes an anchor 1021 and a second drive structure 1022. The anchor 1021 is fixedly connected to the second drive structure 1022. The second drive structure 1022 is transmission-connected to the first drive structure 103. A second through hole 1041 is provided on the first limiting structure 104. The second through hole 1041 is used for the spiral portion of the anchor 1021 to pass through so that the anchor 1021 can move axially.

[0047] Specifically, the first drive structure 103 can be a first gear, and the second drive structure 1022 can be a second gear. A second groove (not shown in the figure) is provided on the mounting shell 10, and the second groove is located between the two first through holes 101. The first drive structure 103 is movably installed in the second groove. The first drive structure 103 is meshed and connected with the two second drive structures 1022 on both sides. When the nailing spring tube 30 controls the first drive structure 103 to rotate, the second drive structures 1022 on both sides rotate synchronously.

[0048] At the same time, the spiral portion of the anchor 1021 passes through the second through hole 1041 of the first limiting structure 104. When the second driving structure 1022 synchronously drives the anchor 1021 to rotate circumferentially, the second through hole 1041 limits the circumferential rotation of the anchor 1021. Due to the structural setting of the spiral portion, the spiral portion of the anchor 1021 can pass through the second through hole 1041 in turn, realizing the movement of the anchor 1021 while rotating and moving axially, thereby realizing the anchor 1021 being screwed into the valve ring tissue to complete the nailing operation.

[0049] Furthermore, in the solution of the present invention, the first drive structure 103 is set as one. At this time, when its two sides are engaged with the second drive structure 1022, the rotation angles of the two second drive structures 1022 differ by 180° when they rotate. When corresponding to the anchor 1021, the spiral portions of the two anchors 1021 differ by half a pitch. Therefore, when the second through hole 1041 is set on the first limiting structure 104, the centers of the two second through holes 1041 need to differ by half a pitch in the axial direction. Only in this way can it be ensured that both spiral portions can smoothly pass through the second through hole 1041.

[0050] Furthermore, Figure 4 A schematic structural diagram schematically showing a second limiting structure in one embodiment of the present invention, Figure 5 A schematic diagram schematically shows the structure of the third limiting structure of an embodiment of the present invention, as shown in FIG. Figure 4 、 5 As shown:

[0051] A second limiting structure 50 is provided between the first driving structure 103 and the nail spring tube 30. The second limiting structure 50 includes a first limiting member 501 provided on the first driving structure 103 and a second limiting member 502 provided at the end of the nail spring tube 30.

[0052] When the first driving structure 103 is connected to the nail driving spring tube 30, the first limiting member 501 and the second limiting member 502 are cooperatively connected to circumferentially limit the first driving structure 103 and the nail driving spring tube 30.

[0053] Specifically, the first limiting member 501 can be set as a first groove, and the second limiting member 502 can be set as a first protrusion. When the first driving structure 103 is connected to the nail driving spring tube 30, the first protrusion is inserted into the first groove.

[0054] Through the setting of the second limiting structure 50, the nail driving spring tube 30 can be used to control the circumferential rotation of the first driving structure 103. At the same time, since the two are only circumferentially limited, when driving nails, the second limiting member 502 is located in the first limiting member 501 to realize the rotation control of the first driving structure 103. After driving the nails, the nail driving spring tube 30 can be directly retracted, and the second limiting member 502 and the first limiting member 501 can be disassembled to realize the separation operation of the two. The disassembly and assembly of the two are simple.

[0055] It can be understood that the second limiting structure 50 can also be other structures that can realize the mutual circumferential limitation of the two.

[0056] Furthermore, a third limiting structure 60 is provided between the installation housing 10 and the nail driving and bending tube 20. The third limiting structure 60 includes a third limiting member 601 and a fourth limiting member 602. The third limiting member 601 and the fourth limiting member 602 are arranged at the end of the nail driving and bending tube 20 and extend away from the nail driving and bending tube 20.

[0057] The third limiting member 601 and the fourth limiting member 602 are arranged at intervals. When the installation housing is connected to the nail driving and bending tube 20, the installation housing 10 is located in the interval space between the third limiting member 601 and the fourth limiting member 602. The third limiting member 601 and the fourth limiting member 602 respectively fit on both sides of the installation housing 10 to circumferentially limit the installation housing 10 and the nail driving and bending tube 20.

[0058] Specifically, the side wall of the installation housing 10 is a plane or can also be set as a wavy shape. When the side wall of the installation housing 10 can be set as a wavy shape, there are two or more recesses. The third limiting member 601 and the fourth limiting member 602 can be limiting cylinders, and they respectively overlap at the four recesses on both sides of the installation housing 10 to realize the circumferential limiting function. At the same time, it can further save the manufacturing material of the third limiting structure and realize the light weight of the device.

[0059] The setting of the third limiting structure 60 enables the installation housing 10 not to rotate synchronously with the first driving structure 103 due to friction when the nail driving spring tube 30 drives the first driving structure 103 to rotate, thereby ensuring that the nail driver 102 can move axially smoothly.

[0060] Furthermore, a wire threading member 105 is provided on the side wall of the installation housing 10, and the wire threading member 105 protrudes from the set surface;

[0061] A third through hole 1051 is provided on the wire threading member 105 for the locking wire to pass through.

[0062] With such a setting, when the anchor nail 1021 is screwed into the annulus tissue, the installation housing 10 is fixed to the annulus tissue. By implanting a plurality of nail driving control devices in the annulus tissue and passing the locking wires through the wire threading member 105 in sequence, and tightening the locking wires by pulling at both ends or fixing one side and pulling the other side, the plurality of installation housings 10 are brought closer to each other to contract the annulus tissue, thereby realizing the repair operation of the annulus tissue.

[0063] Furthermore, a first end cover 106 is also provided on the installation housing 10. The first end cover 106 is installed on the side of the first driving structure 103 away from the installation housing 10, and the first end cover 106 is used to prevent pollutants from entering the rack on the circumferential side wall of the first driving structure 103 and avoid affecting the rotation of the first driving structure 103.

[0064] Furthermore, a fourth through hole 107 is provided on the installation housing 10. The fourth through hole 107 is located between the two first through holes 101, and the fourth through hole 107 axially penetrates the installation housing 10 and the first driving structure 103. The fourth through hole 107 is for the positioning needle 40 to pass through.

[0065] Furthermore, the installation housing 10 can be set as a hollow structure, so that the first through hole 101 not only penetrates the installation housing 10 in the axial direction, but also penetrates part of the side wall of the installation housing 10, realizing the lightweight of the device by reducing the overall material.

[0066] With such a setting, before the anchor nail 1021 is nailed into the annulus tissue, the positioning needle 40 passes through the installation housing 10, and the doctor controls the positioning needle 40 to be nailed into the annulus tissue at the surgical position to realize the pre - fixation of the installation housing 10, preventing the problem of inaccurate positioning caused by the shaking of the device when the anchor nail 1021 is screwed in.

[0067] Furthermore, Figure 6 Schematically showing the structural schematic diagram of an annulus repair system according to an embodiment of the present invention, as Figure 6 shown, the present invention also provides an annulus repair system, including a double - nail type nail driving control assembly as described above, and further including a wire locking assembly 70;

[0068] Specifically, during the valve ring repair surgery, multiple double-nail nailing control components are sequentially implanted on the valve ring tissue, and two nailers 102 are synchronously controlled to nail into the valve ring tissue, thereby achieving efficient nailing.

[0069] The locking wire assembly 70 is installed on the double-nail nailing control assembly at the two ends of the multiple double-nail nailing control assemblies. Specifically, it is fixedly connected to the mounting shell 10 and connected to the locking wire. The locking wire passes through the threading pieces 105 on the multiple mounting shells 10 in turn. When the nailing is completed, the locking wire is tightened at the same time by controlling the two locking wire assemblies 70 at both ends, so that the multiple double-nail nailing control devices are close to each other along the circumferential direction of the valve ring tissue, thereby achieving contraction of the valve ring tissue and realizing the valve ring repair surgery.

[0070] To sum up, by setting two first through holes 101 on the mounting shell 10, the two nailers 102 can be installed therein respectively, and at the same time, the two nailers 102 are transmission-connected with the nailing spring tube 30, so that when the nailing spring tube 30 is controlled to rotate, the two nailers 102 can be controlled to move axially at the same time to achieve nailing into the valve ring tissue, completing two nailing operations in one operation, greatly reducing the operation time of completing one nailing in one operation in traditional technology, reducing the burden on doctors, and improving surgical efficiency.

[0071] The above description is merely a preferred embodiment of the present application. Those skilled in the art should understand that the scope of the disclosure herein is not limited to technical solutions formed by a specific combination of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the aforementioned disclosed concepts. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A double-nail type nail driving control component, characterized in that Comprising: An installation housing, a nail driving and bending pipe, a nail driving spring pipe, and a positioning pin; The positioning pin is disposed within the nail driving spring pipe, the nail driving spring pipe is disposed within the nail driving and bending pipe, the nail driving and bending pipe is circumferentially and limit-connected to the installation housing, the positioning pin axially penetrates through the installation housing, and the positioning pin is used for positioning the nail driving position; Two first through holes axially penetrating are provided on the installation housing, the first through holes are for the nail driver to pass through, the nail driving spring pipe is drivingly connected to the nail driver, and the nail driving spring pipe is used for controlling the synchronous axial movement of the two nail drivers.

2. The double-nail type nail driving control assembly according to claim 1, wherein A first driving structure and a first limiting structure are provided on the installation housing, the first driving structure and the first limiting structure are respectively located at two ends of the installation housing in the axial direction, and the first driving structure and the first limiting structure are located between the two first through holes; The first driving structure is circumferentially and limit-connected to the nail driving spring pipe, the first driving structure is respectively drivingly connected to the two nail drivers, the nail driving spring pipe is used for controlling the rotation of the first driving structure to make the two nail drivers rotate synchronously, and the first limiting structure is used for converting the rotational movement of the nail driver into an axial movement.

3. The double-nail type nail driving control component according to claim 2, wherein The nail driver includes an anchor nail and a second driving structure, the anchor nail is fixedly connected to the second driving structure, and the second driving structure is drivingly connected to the first driving structure; A second through hole is provided on the first limiting structure, the second through hole is for the spiral part of the anchor nail to pass through, and when the anchor nail rotates, the second through hole is used for guiding the spiral part of the anchor nail to pass through so that the anchor nail moves axially.

4. A double-nail type nail driving control assembly according to claim 3, wherein, The first driving structure is provided as one, and the displacement difference between the centers of the two second through holes in the axial direction is half of the pitch of the anchor nail.

5. The double-nail type nailing control component according to claim 2, wherein A second limiting structure is provided between the first driving structure and the nail driving spring pipe, the second limiting structure includes a first limiting member provided on the first driving structure and a second limiting member provided at the end of the nail driving spring pipe; When the first driving structure is connected to the nail driving spring pipe, the first limiting member and the second limiting member are cooperatively connected to circumferentially limit the first driving structure and the nail driving spring pipe.

6. The double-nail type nailing control component according to claim 1, wherein A third limiting structure is provided between the installation housing and the nail driving and bending pipe, the third limiting structure includes a third limiting member and a fourth limiting member, the third limiting member and the fourth limiting member are provided at the end of the nail driving and bending pipe and extend in a direction away from the nail driving and bending pipe; The third limiting member and the fourth limiting member are spaced apart, when the installation housing is connected to the nail driving and bending pipe, the installation housing is located in the spaced space between the third limiting member and the fourth limiting member, and the third limiting member and the fourth limiting member respectively fit on both sides of the installation housing to circumferentially limit the installation housing and the nail driving and bending pipe.

7. The double-nail type nailing control component according to claim 2, characterized in that, A wire threading member is provided on the side wall of the installation housing, and the wire threading member protrudes from the set surface; A third through hole is provided on the wire threading member, and the third through hole is for the locking wire to pass through.

8. The double-nail type nail driving control assembly according to claim 2, wherein A first end cap is further provided on the installation housing. The first end cap is installed on a side of the first drive structure away from the installation housing, and the first end cap is used to prevent contaminants from entering the rack on the circumferential side wall of the first drive structure.

9. The double-nail type nailing control assembly according to claim 2, characterized in that, A fourth through hole is provided on the installation housing. The fourth through hole is located between the two first through holes. The fourth through hole axially penetrates the installation housing and the first drive structure, and the fourth through hole is for a positioning pin to pass through.

10. An annulus repair system, characterized in that, It includes a double-nail type nail driving control assembly and a thread locking assembly according to any one of claims 1-9. The double-nail type nail driving control assembly is used to control two nail drivers to simultaneously nail into the annulus tissue. The thread locking assembly is installed on the double-nail type nail driving control assemblies at the two outermost ends among the multiple double-nail type nail driving control assemblies. The two thread locking assemblies are used to simultaneously tighten the locking thread to make the multiple double-nail type nail driving control assemblies approach each other in the circumferential direction of the annulus tissue, so as to contract the annulus tissue.

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