A locking wire device for valve ring repair and a valve ring repair system

Abstract

The present invention discloses a locking wire device and a valve ring repair system for valve ring repair, which relate to the field of medical device technology. The scheme includes: a first support structure, which is fixedly connected to a nailing device; a rotating structure, which axially penetrates the first support structure and is movably connected to the first support structure; a first limiting structure, which radially penetrates the rotating structure and partially extends out of the side wall of the rotating structure; a second limiting structure, which is arranged on the axial side wall of the first support structure; when the first limiting structure and the second limiting structure are respectively located on both sides of the first support structure, the rotating structure is used to rotate relative to the first support structure so that the locking wire is wound around it; when the first limiting structure and the second limiting structure are located on the same side, the first limiting structure and the second limiting structure are used to limit the rotation of the rotating structure. In this way, when the device is locked, it is used to simultaneously tighten the locking wire from both ends to shrink the valve ring. The overall operation is simple and the locking is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a lockwire device for valve ring repair and a valve ring repair system. Background Art

[0002] At present, there are two main treatment methods for mitral regurgitation: medication and surgery. The surgical treatment is divided into edge-to-edge repair, annulus repair and chordal repair. For annulus repair, the doctor nails multiple sets of nailing devices into the annulus and tightens the nailing devices through a locking wire device to shrink the annulus tissue and achieve annulus repair. However, the existing locking wire device has a complex structure and cumbersome operation. After the locking wire is tightened, the locking effect of the locking wire is poor, and the locking wire is easily loosened, thereby causing the annulus tissue to expand, affecting the degree of postoperative recovery. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides a lockwire device for valve ring repair and a valve ring repair system.

[0004] To achieve the above-mentioned purpose, the present invention provides a lockwire device for valve ring repair, comprising:

[0005] a first supporting structure fixedly connected to the nailing device;

[0006] a rotating structure axially extending through the first supporting structure and movably connected to the first supporting structure, wherein one end of a locking wire is fixedly connected to a side wall of the rotating structure;

[0007] a first limiting structure, which radially penetrates the rotating structure, the first limiting structure is elastic and partially extends out of the side wall of the rotating structure;

[0008] a second limiting structure, which is arranged on an axial side wall of the first supporting structure, and the second limiting structure is protruding or recessed from the setting surface;

[0009] 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, and the rotating structure is used to rotate relative to the first supporting structure so that the locking wire is wound around it;

[0010] When the first limiting structure and the second limiting structure are located on the same side, the first limiting structure and the second limiting structure are used to limit the rotation of the rotating structure.

[0011] Preferably, a first through hole extending axially therethrough is provided on the first supporting structure, the first through hole being used for inserting the rotating structure, and the diameter of the first through hole being equal to the diameter of the rotating structure;

[0012] The first limiting structure includes a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are connected at an angle, and the distance between the first limiting portion and the second limiting portion at one end away from each other is greater than the diameter of the first through hole;

[0013] When the first limiting structure enters the first through hole, the first limiting portion and the second limiting portion are squeezed by the first through hole to shrink into the rotating structure. When the first limiting structure moves out of the first through hole, the first limiting portion and the second limiting portion extend and abut against the axial side wall of the first supporting structure.

[0014] Preferably, the second limiting structure protrudes from the setting surface, and 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 through hole, the first limiting portion and the second limiting portion extend and are located between two second limiting structures.

[0015] The axial side wall of the first supporting structure 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.

[0016] Preferably, a first slot and a second slot are provided on the rotating structure, the first slot and the second slot are arranged perpendicular to each other, the first slot is used for inserting the first limiting structure, and the second slot is used for inserting the first pin;

[0017] 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.

[0018] Preferably, the second limiting structure includes a first side wall and a second side wall, the first side wall is perpendicular to the axial side wall of the first supporting structure, and the second side wall is connected to the axial side wall of the first supporting structure at an angle;

[0019] Along the rotation direction of the rotating structure, the second side wall is arranged upstream of the first side wall, and the second side wall gradually tilts away from the first supporting structure. The first side wall is used to limit the reverse rotation of the rotating structure.

[0020] Preferably, a protruding third limiting structure is provided on the rotating structure, and the third limiting structure is provided on a side of the first limiting structure close to the first supporting structure;

[0021] The third limiting structure is used to be connected to the wire locking spring tube in a circumferential limiting manner so that the wire locking spring tube controls the rotation of the rotating structure.

[0022] Preferably, a fourth limiting structure is provided on the rotating structure, the rotating structure axially passes through the fourth limiting structure, and the fourth limiting structure is interference-fitted with a side wall of the rotating structure;

[0023] The fourth limiting structure is arranged on a side of the first limiting structure away from the first supporting structure, and the fourth limiting structure is used to prevent the rotating structure from sliding out of the first supporting structure.

[0024] 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 wire locking spring tube is inserted between two of the third limiting structures, the rotating structure and the wire locking spring tube are circumferentially limited.

[0025] Preferably, it further comprises a second supporting structure, the second supporting structure being fixedly connected to the nailing device, the rotating structure axially passing through the second supporting structure, and the second supporting structure being used to limit the rotating structure from moving in a direction away from the first supporting structure;

[0026] When the rotating structure is in the initial state, the first limiting structure and the fourth limiting structure are located between the first supporting structure and the second supporting structure, and the locking wire is fixedly connected to the rotating structure between the fourth limiting structure and the second supporting structure.

[0027] To achieve the above-mentioned object, the present invention further provides a valve ring repair system, comprising the above-mentioned locking wire device for valve ring repair, and further comprising a nailing device, a locking wire, a guide steel cable and a locking wire spring tube;

[0028] The guide steel cable is detachably connected to one axial end of the rotating structure, the guide steel cable is arranged in the wire lock spring tube, and the wire lock spring tube is circumferentially limitedly connected to the rotating structure;

[0029] The nailing devices are provided in plurality and nailed into the valve annulus tissue in sequence. The locking wire devices are installed on the nailing devices located at the two ends of the plurality of nailing devices. The locking wire is connected in series with the plurality of nailing devices in sequence. The two ends of the locking wire are fixedly connected to the two rotating structures respectively.

[0030] The valve ring repair system is used to synchronously control the rotation of the two locking wire spring tubes to simultaneously tighten the two ends of the locking wire so that the multiple nailing devices are close to each other.

[0031] Based on this, the beneficial effects of the present invention are:

[0032] According to the solution of the present invention, the rotating structure is fixedly connected to the nailing device via the first supporting structure. When the rotating structure rotates, the locking wire can be pulled and wound around the rotating structure. By tightening the two nailing devices from one to the other, the problem of loose locking caused by the two nailing devices and the locking wire device not being in line with each other when tightening the nailing devices at both ends from the middle in the traditional technology is reduced.

[0033] At the same time, when the rotating structure rotates into place, the axial movement of the rotating structure is controlled so that the first limiting structure abuts against the second limiting structure, thereby locking the rotating structure and completing the locking of the locking line. The overall operation is simple, and the locking structure is firm, which effectively prevents the locking line from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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:

[0035] Figure 1 A schematic diagram schematically illustrates the structure of a thread locking device according to an embodiment of the present invention;

[0036] Figure 2 A schematic diagram schematically illustrates a rotating structure according to an embodiment of the present invention;

[0037] Figure 3 A schematic structural diagram schematically showing a first limiting structure according to an embodiment of the present invention;

[0038] Figure 4 A schematic structural diagram schematically showing a first supporting structure according to an embodiment of the present invention;

[0039] Figure 5 A schematic diagram schematically illustrates the structure of a valve ring repair system according to an embodiment of the present invention;

[0040] Explanation of the accompanying drawings: 10-first supporting structure, 101-first through hole, 20-rotating structure, 201-first slot, 202-second slot, 203-first pin, 204-third limiting structure, 205-fourth limiting structure, 30-first limiting structure, 301-first limiting portion, 302-second limiting portion, 303-arc-shaped groove, 40-second limiting structure, 401-first side wall, 402-second side wall, 50-second supporting structure, 60-nailing device, 70-locking wire, 80-guide steel cable, 90-wire lock spring tube. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] 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 "the" used in the embodiments of the present application are also intended to include plural forms unless the context clearly indicates otherwise.

[0043] It should be understood that although the terms first, second, third, etc. may be used to describe related structures in the embodiments of the present application, these related structures should not be limited to these terms. These terms are only used to distinguish related structures from each other.

[0044] Depending on the context, the word "if" as used herein may be interpreted as "when" or "when..." Similarly, depending on the context, the phrase "if it is determined" may be interpreted as "when it is determined" or "when (stated condition or event) is detected."

[0045] It should be noted that the directional terms such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described based on the perspectives shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is formed "on" or "under" another element, it can not only be formed directly "on" or "under" another element, but can also be formed indirectly "on" or "under" another element through an intermediate element.

[0046] Figure 1 A schematic diagram schematically shows the structure of a thread locking device according to an embodiment of the present invention. Figure 2 A schematic diagram schematically shows a rotating structure according to an embodiment of the present invention. Figure 3 A schematic diagram schematically shows the structure of the first limiting structure of an embodiment of the present invention, as shown in FIG. Figure 1-3 As shown, a lockwire device for valve ring repair of the present invention comprises:

[0047] A first supporting structure 10 , which is fixedly connected to the nailing device 60 ;

[0048] The rotating structure 20 axially passes through the first supporting structure 10 and is movably connected to the first supporting structure 10 . One end of the locking wire 70 is fixedly connected to the side wall of the rotating structure 20 .

[0049] A first limiting structure 30 radially passes through the rotating structure 20. The first limiting structure 30 is elastic and partially extends out of the side wall of the rotating structure 20.

[0050] A second limiting structure 40 is disposed on an axial sidewall of the first supporting structure 10 , and the second limiting structure 40 is protruding or recessed from the setting surface;

[0051] When the rotating structure 20 is in an initial state, the first limiting structure 30 and the second limiting structure 40 are respectively located on both sides of the first supporting structure 10, and the rotating structure 20 is used to rotate relative to the first supporting structure 10 so that the locking wire 70 is wound around it;

[0052] When the first limiting structure 30 and the second limiting structure 40 are located on the same side, the first limiting structure 30 and the second limiting structure 40 are used to limit the rotation of the rotating structure 20 .

[0053] Specifically, the rotating structure 20 is supported by the first supporting structure 10 on the nailing device 60, so that when the rotating structure 20 rotates and pulls the locking wire 70, one of the two nailing devices 60 pulls the other, avoiding the problem of incomplete tightening caused by the nailing device 60, the locking wire device and the nailing device 60 being out of line when the nailing devices 60 on both sides are pulled from the middle position of the two in the traditional technology, thereby improving the valve ring repair effect.

[0054] And when the locking line 70 is pulled into place, the rotating structure 20 is moved axially, so that the first limiting structure 30 enters the same side as the second limiting structure 40, so that the first limiting structure 30 abuts against the second limiting structure 40, achieving circumferential limitation, thereby preventing the rotating structure 20 from rotating in the opposite direction, effectively avoiding the loosening of the locking line 70 after surgery, and improving the valve ring repair effect.

[0055] Furthermore, if Figure 2 、 3 As shown, a first through hole 101 is provided on the first support structure 10 and is axially penetrated. The first through hole 101 is used for inserting the rotating structure 20. The diameter of the first through hole 101 is equal to the diameter of the rotating structure 20.

[0056] The first limiting structure 30 includes a first limiting portion 301 and a second limiting portion 302. The first limiting portion 301 and the second limiting portion 302 are connected at an angle. The distance between the first limiting portion 301 and the second limiting portion 302, which are located away from each other, is greater than the diameter of the first through hole 101.

[0057] When the first limiting structure 30 enters the first through hole 101, the first limiting portion 301 and the second limiting portion 302 are squeezed by the first through hole 101 to shrink into the rotating structure 20. When the first limiting structure 30 moves out of the first through hole 101, the first limiting portion 301 and the second limiting portion 302 extend and abut the axial side wall of the first supporting structure 10.

[0058] Specifically, the first limiting structure 30 can be set to a cone shape, so that the first limiting portion 301 and the second limiting portion 302 are connected at an angle at one end, and the other ends are far away from each other. When the first limiting structure 30 is inserted into the rotating structure 20, the first limiting portion 301 and the second limiting portion 302 are far away from each other at one end and extend from both sides of the rotating structure 20 respectively.

[0059] When the rotating structure 20 moves axially in the direction approaching the first supporting structure 10, the ends of the first limiting portion 301 and the second limiting portion 302 that are away from each other are squeezed by the first through hole 101, move closer to each other, and then shrink into the rotating structure 20 and enter the first through hole 101. When the rotating structure 20 moves further axially, the ends of the first limiting portion 301 and the second limiting portion 302 that are away from each other extend out of the first through hole 101. The first limiting portion 301 and the second limiting portion 302 are stretched and reset by the elastic force, so that the first limiting portion 301 and the second limiting portion 302 face the side wall of the first supporting structure 10 and abut against the first supporting structure 10, thereby preventing the rotating structure 20 from moving axially in the opposite direction.

[0060] At the same time, the second limiting structure 40 protrudes from the setting surface. Multiple second limiting structures 40 are set and are circumferentially spaced along the side wall of the first support structure 10. When the first limiting structure 30 extends out of the first through hole 101, the first limiting portion 301 and the second limiting portion 302 extend and are located between the two second limiting structures 40.

[0061] In this way, the axial side wall of the first supporting structure 10 can abut against the first limiting structure 30, thereby limiting the reverse axial movement of the first limiting structure 30, and thereby limiting the reverse axial movement of the rotating structure 20. After the first limiting structure 30 extends out of the first through hole 101, it is located between the two second limiting structures 40. The second limiting structure 40 limits the circumferential rotation of the first limiting structure 30, thereby limiting the circumferential rotation of the rotating structure 20, and realizing the locking of the rotating structure 20.

[0062] Furthermore, if Figure 2 As shown, a first slot 201 and a second slot 202 are provided on the rotating structure 20, which are radially penetrated. The first slot 201 and the second slot 202 are arranged perpendicular to each other. The first slot 201 is used to insert the first limiting structure 30, and the second slot 202 is used to insert the first pin 203.

[0063] When the first pin 203 is inserted into the second slot, the first pin 203 is clamped between the first limiting portion 301 and the second limiting portion 302 . The first pin 203 is used to prevent the first limiting structure 30 from moving out of the first slot 201 .

[0064] Specifically, arc grooves 303 can be respectively provided on the side walls facing each other of the first limiting portion 301 and the second limiting portion 302. When the first pin 203 is clamped between the first limiting portion 301 and the second limiting portion 302, the first pin 203 is inserted into the two arc grooves 303, so that the arc grooves 303 limit the forward and reverse axial movement of the first limiting structure 30 in the first slot 201, preventing the first limiting structure 30 from moving out of the first slot, thereby realizing that when the first limiting structure 30 is limited circumferentially and axially, the rotating structure 20 is simultaneously limited circumferentially and axially.

[0065] Furthermore, Figure 4 A schematic structural diagram of a first supporting structure according to an embodiment of the present invention is shown as follows: Figure 4 As shown:

[0066] The second limiting structure 40 includes a first side wall 401 and a second side wall 402. The first side wall 401 is perpendicular to the axial side wall of the first supporting structure 10, and the second side wall 402 is connected to the axial side wall of the first supporting structure 10 at an angle.

[0067] Along the rotation direction of the rotating structure 20 , the second side wall 402 is disposed upstream of the first side wall 401 . The second side wall 402 gradually tilts away from the first supporting structure 10 . The first side wall 401 is used to limit the reverse rotation of the rotating structure 20 .

[0068] Specifically, when the first limiting structure 30 extends out of the first through hole 101, the first limiting portion 301 and the second limiting portion 302 are located between the side walls of the two second limiting structures 40, specifically between the second side wall 402 of one second limiting structure 40 and the first side wall 401 of the other second limiting structure 40.

[0069] The first side wall 401 is arranged perpendicular to the first supporting structure 10, so that when the rotating structure 20 rotates in the opposite direction, the first side wall 401 can limit it, and the second side wall 402 is connected to the first supporting structure 10 at an angle, so that when the first limiting structure 30 is located between the second limiting structure 40, it is found that the locking line 70 is not completely locked. The doctor can also manipulate the rotating structure 20 to achieve further rotation and further tighten the locking line 70 to reserve adjustable space.

[0070] Furthermore, if Figure 2As shown, a protruding third limiting structure 204 is provided on the rotating structure 20 , and the third limiting structure 204 is provided on a side of the first limiting structure 30 close to the first supporting structure 10 ;

[0071] The third limiting structure 204 is used to be connected to the wire locking spring tube 90 in a circumferential limiting manner, so that the wire locking spring tube 90 controls the rotation of the rotating structure 20 .

[0072] Specifically, multiple third limiting structures 204 are provided and are evenly spaced along the circumferential side wall of the rotating structure 20. When the wire locking spring tube 90 is inserted between two third limiting structures 204, the rotating structure 20 and the wire locking spring tube 90 are circumferentially limited, and the rotating structure 20 can be controlled by rotating the wire locking spring tube 90 to achieve winding and tightening of the locking wire 70.

[0073] Furthermore, a fourth limiting structure 205 is provided on the rotating structure 20. The rotating structure 20 passes through the fourth limiting structure 205. The fourth limiting structure 205 is interference-fitted with the side wall of the rotating structure 20.

[0074] The fourth limiting structure 205 is arranged on a side of the first limiting structure 30 away from the first supporting structure 10. In this way, when the rotating structure 20 moves axially toward the first supporting structure 10, the fourth limiting structure 205 can prevent the rotating structure 20 from sliding out of the first supporting structure 10.

[0075] Furthermore, the lockwire device for valve ring repair of the present invention further includes a second support structure 50, the second support structure 50 being fixedly connected to the nailing device 60, the rotating structure 20 axially passing through the second support structure 50, and the second support structure 50 being used to restrict the rotating structure 20 from moving in a direction away from the first support structure 10;

[0076] In the initial state of the rotating structure 20, the first limiting structure 30 and the fourth limiting structure 205 are located between the first supporting structure 10 and the second supporting structure 50, and the locking wire 70 is fixedly connected to the rotating structure 20 between the fourth limiting structure 205 and the second supporting structure 50.

[0077] Specifically, the rotating structure 20 is formed by two rods with different diameters. The two rods are fixedly connected to each other, and the diameter of one of the rods is larger than the diameter of the other rod. The first supporting structure 10 is used to insert the rod with a larger diameter, and the second supporting structure 50 is used to insert the rod with a smaller diameter. The second supporting structure 50 can abut against the rod with a larger diameter to limit the axial movement of the rotating structure 20.

[0078] Furthermore, Figure 5 A schematic diagram schematically shows the structure of a valve ring repair system according to an embodiment of the present invention, as shown in FIG. Figure 5 As shown:

[0079] To achieve the above-mentioned object, the present invention further provides a valve ring repair system, comprising the above-mentioned locking wire device for valve ring repair, and further comprising a nailing device 60, a locking wire 70, a guide cable 80 and a locking wire spring tube 90;

[0080] The guide steel cable 80 is detachably connected to one axial end of the rotating structure 20 . The guide steel cable 80 is disposed in a wire lock spring tube 90 . The wire lock spring tube 90 is circumferentially limitedly connected to the rotating structure 20 .

[0081] A plurality of nailing devices 60 are provided and nailed into the valve annulus tissue in sequence. The locking wire devices are installed on the nailing devices 60 at the two ends of the plurality of nailing devices 60. The locking wire 70 connects the plurality of nailing devices 60 in series in sequence. The two ends of the locking wire 70 are fixedly connected to the two rotating structures 20 respectively.

[0082] The valve ring repair system is used to synchronously control the rotation of two locking wire spring tubes 90 to simultaneously tighten the two ends of the locking wire 70 so that the multiple nailing devices 60 are close to each other to shrink the valve ring to prevent it.

[0083] Specifically, during the annular repair surgery, multiple nailing devices 60 are sequentially implanted on the annular tissue, and locking wire devices are installed on the nailing devices 60 at the two ends of the entire nailing device 60. At this time, the locking wire 70 sequentially connects the multiple nailing devices 60 in series, and the two ends are respectively fixedly connected to the rotating structure 20 at the two ends. The guide steel cable 80 is fixedly connected to the end of the rotating structure 20. The locking wire spring tube 90 is sleeved on the rotating structure 20 and is axially limitedly connected to the third limiting structure 204 on it.

[0084] When the nailing is completed and the valve ring needs to be contracted, the two locking wire spring tubes 90 are simultaneously operated, and the rotation structures 20 at both ends are controlled to rotate, so that the locking wire 70 is pulled from both ends at the same time, so that multiple nailing devices 60 are close to each other to contract the valve ring tissue. After tightening the locking wire 70, the guide steel cable 80 is pulled to make the rotating structure 20 move axially, so that the first limiting structure 30 and the second limiting structure 40 are located on the same side, and circumferential limitation is achieved between each other, thereby achieving the locking effect of the rotating structure 20. If it is found that the locking wire 70 is still not tightened into place, the rotating structure 20 can be further controlled to rotate to achieve further tightening. If it is tightened into place, the guide steel cable 80 and the locking wire spring tube 90 are disassembled from the locking wire device and withdrawn from the body to complete the valve ring repair surgery.

[0085] In summary, the present invention installs the rotating structure 20 on the nailing device 60, sets a first limiting structure 30 on the rotating structure 20, and sets a second limiting structure 40 on the first supporting structure 10 for installation with the nailing device 60. When the two are located on both sides of the first supporting structure 10, the rotating structure 20 can rotate arbitrarily to achieve the tightening of the locking line 70 and thus contraction of the valve ring tissue. When tightened into place, the rotating structure 20 is moved axially so that the first limiting structure 30 moves to the same side as the second limiting structure 40, and then is located between the two second limiting structures 40, and is then restricted from circumferential rotation by the second limiting structure 40, thereby achieving locking of the rotating structure 20. The overall locking operation is simple, and the limitation is achieved through the structure, which can reduce the loosening of the locking line 70 after surgery.

[0086] 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 locking wire device for valve ring repair, characterized in that: include: a first supporting structure fixedly connected to the nailing device; a rotating structure axially extending through the first supporting structure and movably connected to the first supporting structure, wherein one end of a locking wire is fixedly connected to a side wall of the rotating structure; a first limiting structure, which radially penetrates the rotating structure, the first limiting structure is elastic and partially extends out of the side wall of the rotating structure; a second limiting structure, which is arranged on an axial side wall of the first supporting structure, and the second limiting structure is protruding or recessed from the setting surface; 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, and the rotating structure is used to rotate relative to the first supporting structure so that the locking wire is wound around it; When the first limiting structure and the second limiting structure are located on the same side, the first limiting structure and the second limiting structure are used to limit the rotation of the rotating structure; A first through hole extending axially therethrough is provided on the first supporting structure, the first through hole being used for inserting the rotating structure, and a diameter of the first through hole being equal to a diameter of the rotating structure; The first limiting structure includes a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are connected at an angle, and the distance between the first limiting portion and the second limiting portion at one end away from each other is greater than the diameter of the first through hole; When the first limiting structure enters the first through hole, the first limiting portion and the second limiting portion are squeezed by the first through hole to shrink into the rotating structure; when the first limiting structure moves out of the first through hole, the first limiting portion and the second limiting portion extend and abut against the axial side wall of the first supporting structure; The second limiting structure protrudes from the setting surface, and 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 through hole, the first limiting portion and the second limiting portion extend and are located between two second limiting structures. The axial side wall of the first supporting structure 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.

2. The lockwire device for valve ring repair according to claim 1, characterized in that: The rotating structure is provided with a first slot and a second slot that penetrate radially, the first slot and the second slot being arranged perpendicular to each other, the first slot being used for inserting the first limiting structure, and the second slot being used for inserting the first pin; 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.

3. The lockwire device for valve ring repair according to claim 2, characterized in that: The second limiting structure includes a first side wall and a second side wall, the first side wall is perpendicular to the axial side wall of the first supporting structure, and the second side wall is connected to the axial side wall of the first supporting structure at an angle; Along the rotation direction of the rotating structure, the second side wall is arranged upstream of the first side wall, and the second side wall gradually tilts away from the first supporting structure. The first side wall is used to limit the reverse rotation of the rotating structure.

4. The lockwire device for valve ring repair according to claim 1, characterized in that: A protruding third limiting structure is provided on the rotating structure, and the third limiting structure is provided on a side of the first limiting structure close to the first supporting structure; The third limiting structure is used to be connected to the wire locking spring tube in a circumferential limiting manner so that the wire locking spring tube controls the rotation of the rotating structure.

5. The lockwire device for valve ring repair according to claim 4, characterized in that: A fourth limiting structure is provided on the rotating structure, the rotating structure axially passes through the fourth limiting structure, and the fourth limiting structure is interference-fitted with a side wall of the rotating structure; The fourth limiting structure is arranged on a side of the first limiting structure away from the first supporting structure, and the fourth limiting structure is used to prevent the rotating structure from sliding out of the first supporting structure.

6. The lockwire device for valve ring repair according to claim 4, characterized in that: The third limiting structures are provided in plurality and are evenly spaced along the circumferential side wall of the rotating structure. When the end of the wire locking spring tube is inserted between two of the third limiting structures, the rotating structure and the wire locking spring tube are circumferentially limited.

7. The lockwire device for valve ring repair according to claim 5, characterized in that: The second supporting structure is fixedly connected to the nailing device, the rotating structure axially passes through the second supporting structure, and the second supporting structure is used to limit the movement of the rotating structure in a direction away from the first supporting structure; When the rotating structure is in the initial state, the first limiting structure and the fourth limiting structure are located between the first supporting structure and the second supporting structure, and the locking wire is fixedly connected to the rotating structure between the fourth limiting structure and the second supporting structure.

8. A valve ring repair system, characterized in that: A locking wire device for valve ring repair according to any one of claims 1 to 7, further comprising a nailing device, a locking wire, a guide steel cable and a locking wire spring tube; The guide steel cable is detachably connected to one axial end of the rotating structure, the guide steel cable is arranged in the wire lock spring tube, and the wire lock spring tube is circumferentially limitedly connected to the rotating structure; The nailing devices are provided in plurality and nailed into the valve annulus tissue in sequence. The locking wire devices are installed on the nailing devices located at the two ends of the plurality of nailing devices. The locking wire is connected in series with the plurality of nailing devices in sequence. The two ends of the locking wire are fixedly connected to the two rotating structures respectively. The valve ring repair system is used to synchronously control the rotation of the two locking wire spring tubes to simultaneously tighten the two ends of the locking wire so that the multiple nailing devices are close to each other.

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