Repair device with adaptive connecting structure

Abstract

The invention relates to the field of medical instruments, in particular to a repairing device with an adaptive connecting structure, which comprises a fixing structure, a closing piece and a traction piece, the adaptive connecting structure is arranged between the fixing structure and the closing piece, and the adaptive connecting structure comprises an elastic connecting unit and a movable connecting unit; the two ends of the elastic connecting unit are connected with the fixing structure and the closing piece respectively, and the two sides of the elastic connecting unit are free and unconstrained. Moreover, the movable connecting unit comprises a movable part and a connecting part, the movable part is movably connected with the fixed structure, and the connecting part is connected with the movable connecting unit.

Description

Technical Field

[0001] The present application belongs to the field of medical devices, and specifically relates to a repair device with an adaptive connection structure. Background Art

[0002] Mitral regurgitation (abbreviated as: MR) is a common heart valve disease, including primary mitral regurgitation and secondary mitral regurgitation. Primary mitral regurgitation is caused by abnormal mitral valve leaflets, ruptured chordae or papillary muscle insufficiency, resulting in poor anastomosis of the anterior and posterior leaflets of the mitral valve. Secondary mitral regurgitation is caused by valve ring dilation, left atrium and left ventricle enlargement, resulting in poor anastomosis of the anterior and posterior leaflets of the mitral valve. In recent years, mitral valve interventional treatment has developed rapidly, mainly including valve repair or valve replacement. Among them, mitral valve leaflet repair includes reducing the size of the patient's valve ring to reduce mitral valve regurgitation, clamping the middle part of the mitral valve leaflets, and using artificial valve leaflets and autologous valve leaflets to open and close to solve the regurgitation problem.

[0003] Technicians in this field are committed to researching a repair device to achieve apposition with the native valve leaflet. However, due to the complexity of the native structure of the mitral valve, the design of the repair device is very difficult, mainly reflected in: The area of ​​the mitral valve annulus is large, and the leaflet closure is difficult: the fixed structure is fixed at the position of the valve annulus, the closure part and the autologous valve leaflet are fitted three-dimensionally, and the closure part needs to be twisted to a certain extent. After the repair device is implanted, how to make the closure part twist naturally without affecting the fixation of the valve annulus position, and ensure a stable connection between the fixed structure and the closure part.

[0004] The connection stability between the apical tissue and the pulling member is poor: the pulling member is fixedly connected to the papillary muscle. If the closing member does not have a certain degree of adaptability, the pulling member will be overstretched, causing damage to the papillary muscle or even disconnection.

[0005] In summary, it can be seen from the above that the closure of the mitral valve leaflets is difficult, the torsion of the closure components is difficult to achieve, and the poor adaptability of the closure components are problems that need to be urgently addressed in the field of mitral valve repair. Summary of the invention

[0006] The object of the present invention is to provide a repair device with an adaptive connection structure to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present application solves the problems through the following technical solutions: a repair device with an adaptive connection structure, comprising a fixed structure, a closing member and a pulling member, wherein the adaptive connection structure is arranged between the fixed structure and the closing member, and the adaptive connection structure comprises an elastic connection unit and a movable connection unit, wherein the two ends of the elastic connection unit are respectively connected to the fixed structure and the closing member, and the two sides of the elastic connection unit are free and unconstrained; and the movable connection unit comprises a movable member and a connecting member, wherein the movable member is movably connected to the fixed structure, and the connecting member is connected to the closing member.

[0008] In one embodiment, the movable connection comprises rotation, displacement, shaking or sliding along a track.

[0009] In one embodiment, the movable member provides a degree of freedom for the movement of the closure member.

[0010] In one embodiment, the movable member can rotate relative to the fixed structure. Such a design facilitates providing the closure member with a degree of freedom when the closure member is twisted, thereby reducing the impact on the implanted fixed structure.

[0011] In one embodiment, the fixing structure includes a supporting frame and an anchoring unit, wherein the supporting frame is connected to the elastic connecting unit; and the supporting frame includes a limiting structure, wherein the limiting structure is connected to the movable part.

[0012] In one embodiment, the movable member is disposed at a middle position of the fixed structure.

[0013] In one embodiment, the support frame includes a positioning member and a supporting member; and the positioning member is wavy or folded line shaped.

[0014] In one embodiment, the support member is disposed in the middle of the support frame, and the limiting structure is disposed on the support member.

[0015] In one embodiment, the elastic connection unit is fixedly connected to the support member.

[0016] In one embodiment, the support member is connected to the positioning member, and the support member and the positioning member form at least one closed loop structure, so that the support skeleton structure is stable and will not be excessively deformed.

[0017] In one embodiment, the distal end or the distal end portion of the elastic connection unit is connected to the fixing structure, and the proximal end or the proximal end portion of the elastic connection unit is connected to the closing member.

[0018] In one embodiment, the distal length or the distal side length of the elastic connection unit is smaller than the proximal length or the proximal side length of the elastic connection unit.

[0019] In one embodiment, the arc length of the protected support member is smaller than the arc length of the connecting member.

[0020] In one embodiment, the positioning element is curved when viewed from the side to adapt to the physiological shape of the valve ring.

[0021] In one embodiment, the limiting structure includes a limiting member and a limiting wire, the movable member passes through the limiting member, and the limiting wire is wound around the limiting member and the movable member; and the movable member is in a ring shape or a loop shape.

[0022] In one embodiment, the limiting member is a shape memory alloy material, and the limiting member is a flexible wire.

[0023] In one embodiment, the limiting structure prevents excessive movement of the movable member.

[0024] In one embodiment, the limiting member is in the shape of a double ring buckle.

[0025] In one embodiment, the anchoring unit at least partially overlaps with the elastic connection unit; and the anchoring unit includes at least two anchoring regions, and the anchoring regions have no intersection with the elastic connection unit in projection.

[0026] In one embodiment, the anchoring unit overlaps with the elastic connecting unit in the axial direction, and the elastic connecting unit arranged in this way will not increase the length of the repair device in the axial direction.

[0027] In one embodiment, the anchoring unit comprises three anchoring regions.

[0028] In one embodiment, the method further comprises a delivery system, wherein the delivery system comprises a tissue anchor; and the tissue anchor passes through the anchoring region and is connected to the heart tissue at the valve annulus.

[0029] In one embodiment, the connecting member includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are at a certain angle; and the first connecting portion and the second connecting portion are in an arc shape.

[0030] In one embodiment, a protective member is provided at the end of the connecting piece.

[0031] In one embodiment, the connecting piece is connected to the distal end of the closing piece, and the shape of the connecting piece is the same as the contour of the distal end of the closing piece.

[0032] In one embodiment, the movable part is disposed between the elastic connection unit and the anchoring unit; and the anchoring unit completely covers or fits the movable part.

[0033] In one embodiment, the anchoring unit blocks the movable part, which can effectively prevent the adaptive connection structure from moving to the valve ring, so that the closure is maintained in the ventricle and does not move excessively to the valve ring position or the atrial position.

[0034] In one embodiment, the movable member and the connecting member are connected in one piece; or, the movable member and the connecting member are connected in a separate piece.

[0035] In one embodiment, the movable member and the connecting member are integrally formed.

[0036] In one embodiment, a support structure is provided at the proximal end of the closure member, and the support structure includes a first closed loop, a second closed loop and a third closed loop; and the second closed loop has the largest size and is disposed in the middle of the support structure.

[0037] In one embodiment, the support structure includes two limiting members, the limiting member connects the first closed loop and the second closed loop, and the limiting member connects the second closed loop and the third closed loop.

[0038] In one embodiment, the pulling member includes a first pulling wire, a second pulling wire and a third pulling wire, which are respectively connected to the first closed loop, the second closed loop and the third closed loop; and the lengths of the first pulling wire, the second pulling wire and the third pulling wire gradually increase.

[0039] In one embodiment, the pulling member further comprises a hoop structure disposed at the proximal end; the hoop structure is fixedly connected to the papillary muscle tissue.

[0040] In one embodiment, the elastic connection unit is made of elastic polyester cloth material.

[0041] In one embodiment, the elastic connecting unit is a fabric.

[0042] In one embodiment, the repair device is used to repair a tricuspid valve.

[0043] In one embodiment, the tissue anchor is in the shape of an anchor.

[0044] Compared with the prior art, the advantages of the present invention are: 1. In the prior art, the fixing structure is usually directly connected to the closure member. However, since the movement direction of the closure member after implantation is not single and the movement dimension is multi-dimensional, the closure member often needs to be twisted, so that a large shear force is generated between the closure member and the fixing structure, thereby causing the closure member to exert a force on the fixing structure to cause the fixing structure to shift, or even directly tear the closure member and the fixing structure, thereby injuring the patient again. The present application solves the above problems by providing an adaptive connection structure between the fixing structure and the closure member. First, the adaptive connection structure includes an elastic connection unit. The elastic connection unit is connected to the closure member made of animal pericardium or polyester due to its flexibility and elasticity. The shear force between the closing member and the fixed structure is avoided. On the other hand, in order to prevent the elastic connection unit from excessively moving under the impact of blood flow, the elastic connection structure also includes a movable connection unit. The movable connection unit includes a movable part and a connecting part. The movable part and the connecting part are both made of metal materials. The movable part is movably connected to the fixed structure. When the closing member and the elastic connection unit are impacted by blood flow, the movable part moves accordingly. Since the movable part is constrained by the fixed structure, the movement range of the movable part is limited, thereby preventing the closing member from excessively moving toward the atrium. In addition, since the movable part is arranged in the middle of the fixed structure, the closing member can be twisted arbitrarily, and the twisting angle range is large, which is convenient for adapting to the other native valve leaflet.

[0045] 2. Different from the prior art, the adaptive connection structure is set to connect the fixed structure and the closure member while adaptively adjusting the shape of the closure member. However, the elastic connection unit set alone is easy to move to the atrial position due to its own uncontrolled flexibility. The elastic connection unit will move toward the atrium after being impacted by blood flow, which is not conducive to the movement of the closure member toward the native valve leaflet. Therefore, a movable connection unit is set, the movable part is connected to the limiting structure of the support frame, and the connecting part is connected to the closure member. The advantages of this design are: first, the connecting part is set at the proximal end of the elastic connection unit and the distal end of the closure member, and the three are fixed in one place. Due to the rigidity of the connecting part, the closure member is given a certain support force, and the connecting part can also partially limit the closure member. Secondly, the moving part will move in accordance with the swing of the elastic connecting unit. Since the moving part is in the shape of a ring or a circle, the moving part can have a certain circular movable space, so that it can change its position relative to its original position. At the same time, the moving part also has a certain rotation space to adapt to the torsion of the closing part. Thirdly, since the limiting structure also includes a limiting wire, the limiting wire encircles or wraps around the limiting part and the moving part, so that the movable space of the moving part is limited, thereby affecting the torsion of the closing part, which can prevent the closing part from twisting too much, or shaking too much, or other excessive movement. In summary, the movable connecting unit conforms to the elastic connecting part and the closing part, and also limits the elastic connecting part and the closing part, thereby playing a role of appropriate compliance and prevention of excessive movement. It is ingeniously designed and highly practical.

[0046] 3. Different from the prior art, the anchoring unit and the elastic connection unit at least partially overlap, so this design will not increase the axial length of the repair device, and the anchoring unit fixed at the valve ring position will become a closed part in the direction of the ventricle; at the same time, the anchoring unit and the elastic connection unit partially overlap in the direction of the valve ring, but in order to prevent the elastic connection unit from being restrained by the tissue anchor, the anchoring area and the elastic connection unit do not overlap, that is, the two have no intersection in projection. In summary, the partial overlapping design of the elastic connection unit and the anchoring unit will not increase the length of the repair device, nor will it affect the anchoring of the fixed structure.

[0047] 4. Different from the prior art, the movable part is arranged between the elastic connection unit and the anchoring unit. It is known that the elastic connection unit and the anchoring unit at least partially overlap. Arranging the movable part between the two can prevent the movable part from directly contacting the valve ring or valve leaflet, avoiding the problem of metal scratching heart tissue.

[0048] 5. Different from the prior art, the pull piece of the present application is connected to the papillary muscle. Since the papillary muscles are located on both sides of the native valve leaflets, the three pull wires of the pull piece are of different lengths. The farther away from the target papillary muscle, the longer the pull wire is, so as to adapt to the physiological structure inside the ventricle. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 and Figure 2 It is a schematic diagram of the overall structure of the repair device of the present invention.

[0050] Figure 3 It is a schematic diagram of the limiting structure of the present invention and a schematic diagram of the positional relationship between the connecting member and the closing member.

[0051] Figure 4 It is a schematic diagram of the state in which the movable part of the present invention shakes or moves.

[0052] Figure 5 It is a schematic diagram of the state in which the movable part of the present invention rotates.

[0053] Figure 6 It is a schematic diagram of the structure in which the movable part of the present invention is arranged between the elastic connection unit and the anchoring unit.

[0054] Figure 7 This is a schematic diagram of the repair device of the present invention after implantation.

[0055] Figure 8 It is a schematic diagram of the present invention adapting the connecting structure to move together with the closing member.

[0056] The names of the parts indicated by the numbers in the accompanying drawings are as follows: 1-fixed structure, 11-support skeleton, 111-positioning member, 112-support member, 113-limiting structure, 114-limiting member, 115-limiting wire, 12-anchoring unit, 121-anchoring area, 2-closing member, 3-pull member, 31-first pull line, 32-second pull line, 33-third pull line, 34-hoop structure, 4-adaptive connection structure, 5-elastic connection unit, 6-movable connection unit, 61-movable member, 62-connecting member, 621-first connecting part, 622-second connecting part, 7-tissue anchor, 8-support structure, 81-first closed loop, 82-second closed loop, 83-third closed loop, 84-limiting member. DETAILED DESCRIPTION

[0057] In the following description of the drawings and specific embodiments, the details of one or more embodiments of the present application will be described. From these descriptions, drawings and claims, other features, purposes and advantages of the present application can be clearly seen.

[0058] It should be understood that the illustrated and described embodiments are not limited in application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the accompanying drawings. The illustrated embodiments may be other embodiments and may be implemented or executed in various ways. Each example is provided by explaining the disclosed embodiments rather than limiting them. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the embodiments of the present application without departing from the scope or essence disclosed in the present application. For example, a feature illustrated or described as part of an embodiment may be used together with another embodiment to still produce another embodiment. Therefore, the present application discloses and covers such modifications and variations within the scope of the appended claims and their equivalent elements.

[0059] Likewise, it is understood that the phrases and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "include," "comprise," or "have" and variations thereof herein is intended to be open-ended to include the items listed thereafter and their equivalents and additional items.

[0060] The present application will be described in more detail below with reference to different embodiments and examples of several aspects of the present application.

[0061] In the present application, the term "proximal end" or "proximal side" refers to the end or side closer to the centrifugal tip, and the term "distal end" or "distal side" refers to the end or side farther from the centrifugal tip.

[0062] One of the purposes of the embodiments described below is to solve the above-mentioned defects and other problems. The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0063] like Figure 1 and Figure 2 As shown, when treating mitral regurgitation, a repair device with an adaptive connection structure 4 is used, including a fixed structure 1, a closure member 2 and a pulling member 3, wherein the adaptive connection structure 4 is arranged between the fixed structure 1 and the closure member 2, and the adaptive connection structure 4 includes an elastic connection unit 5 and a movable connection unit 6, wherein the two ends of the elastic connection unit 5 are respectively connected to the fixed structure 1 and the closure member 2, and the two sides of the elastic connection unit 5 are free and unconstrained; and the movable connection unit 6 includes a movable member 61 and a connecting member 62, wherein the movable member 61 is movably connected to the fixed structure 1, and the connecting member 62 is connected to the closure member 2.

[0064] In this embodiment, the fixed structure 1 includes a support frame 11 and an anchor unit 12, the anchor unit 12 is made of polyester cloth, the support frame 11 is connected to the elastic connection unit 5; and the support frame 11 includes a limiting structure 113, the limiting structure 113 is connected to the movable part 61, such as Figure 2 and Figure 3 shown.

[0065] In this embodiment, the support frame 11 includes a positioning member 111 and a supporting member 112; and the positioning member 111 is in a wave shape or a broken line shape.

[0066] In this embodiment, the connection mode of the movable connection includes rotation, displacement, shaking or sliding along the track, and the movable member 61 shakes or moves relative to the limiting structure 113, such as Figure 4 shown.

[0067] In this embodiment, the movable member 61 can rotate relative to the fixed structure 1. Figure 5 As shown, such a design facilitates providing the closure member 2 with a degree of freedom when the closure member 2 is twisted, thereby reducing the impact on the implanted fixing structure 1.

[0068] In this embodiment, the movable member 61 is disposed at a middle position of the fixed structure 1 .

[0069] In this embodiment, the support member 112 is disposed in the middle of the support frame 11 , and the limiting structure 113 is disposed on the support member 112 .

[0070] In this embodiment, the elastic connection unit 5 is fixedly connected to the support member 112 , and the fixing methods include but are not limited to: bonding and sewing.

[0071] In this embodiment, the support member 112 is connected to the positioning member 111, and the support member 112 and the positioning member 111 form at least one closed loop structure. Figure 2 As shown, the support frame 11 is structurally stable and will not deform excessively.

[0072] In this embodiment, the distal end or the distal end portion of the elastic connection unit 5 is connected to the fixing structure 1 , and the proximal end or the proximal end portion of the elastic connection unit 5 is connected to the closing member 2 .

[0073] In this embodiment, the distal length or the distal side length of the elastic connection unit 5 is smaller than the proximal length or the proximal side length of the elastic connection unit 5 .

[0074] In this embodiment, the arc length of the protected support member 112 is smaller than the arc length of the connecting member 62 .

[0075] In this embodiment, the positioning member 111 is curved when viewed from the side, adapting to the physiological shape of the valve ring. Figure 6 shown.

[0076] In this embodiment, the limiting structure 113 includes a limiting member 114 and a limiting wire 115 , the movable member 61 passes through the limiting member 114 , and the limiting wire 115 is wound around the limiting member 114 and the movable member 61 ; and the movable member 61 is in a ring shape or a loop shape.

[0077] In this embodiment, the limiting member 114 is made of shape memory alloy material, and the limiting wire 115 is a flexible wire.

[0078] In this embodiment, the limiting member 114 is in a double-ring buckle shape.

[0079] In this embodiment, the anchoring unit 12 at least partially overlaps with the elastic connection unit 5; and the anchoring unit 12 includes three anchoring regions 121, and the anchoring regions 121 and the elastic connection unit 5 have no intersection in projection, such as Figure 7 shown.

[0080] In this embodiment, the anchoring unit 12 and the elastic connecting unit 5 overlap in the axial direction. Figure 6 As shown, the elastic connecting unit 5 arranged in this way will not increase the length of the repair device in the axial direction.

[0081] In this embodiment, a delivery system is also included, and the delivery system includes a tissue anchor 7; and the tissue anchor 7 passes through the anchoring area 121 and is connected to the heart tissue at the valve ring. Figure 7 shown.

[0082] In this embodiment, the connecting member 62 includes a first connecting portion 621 and a second connecting portion 622, wherein the first connecting portion 621 and the second connecting portion 622 are at a certain angle; and the first connecting portion 621 and the second connecting portion 622 are in an arc shape, such as Figure 3 and Figure 4 shown.

[0083] In this embodiment, when the elastic connection unit 5 is elastically deformed, the first connection portion 621 and the second connection portion 622 are deformed or swung respectively. Figure 8 As shown, the elastic connection unit 5 and the closure element 2 are swung or twisted together.

[0084] In this embodiment, the connecting member 62 is connected to the distal end of the closing member 2 , and the shape of the connecting member 62 is the same as the contour of the distal end of the closing member 2 .

[0085] In this embodiment, the movable member 61 is disposed between the elastic connection unit 5 and the anchoring unit 12. Figure 6 As shown; and, the anchoring unit 12 completely blocks or fits the movable part 61; the anchoring unit 12 blocks the movable part 61, which can effectively prevent the adaptive connection structure 4 from moving to the valve ring, so that the closure is maintained in the ventricle and will not move excessively to the valve ring position or the atrium position.

[0086] In this embodiment, the movable member 61 and the connecting member 62 are connected in an integral manner; or, the movable member 61 and the connecting member 62 are connected in a separate manner.

[0087] In this embodiment, a support structure 8 is provided at the proximal end of the closure member 2 , and the support structure 8 includes a first closed loop 81 , a second closed loop 82 and a third closed loop 83 ; and the second closed loop 82 is the largest and is disposed in the middle of the support structure 8 .

[0088] In this embodiment, the support structure 8 includes two limiting members 84 , wherein the limiting member 84 connects the first closed loop 81 and the second closed loop 82 , and the limiting member 84 connects the second closed loop 82 and the third closed loop 83 .

[0089] In this embodiment, the pulling member 3 includes a first pulling line 31, a second pulling line 32 and a third pulling line 33, which are respectively connected to the first closed loop 81, the second closed loop 82 and the third closed loop 83; and the lengths of the first pulling line 31, the second pulling line 32 and the third pulling line 33 gradually increase.

[0090] In this embodiment, the pulling member 3 further includes a hoop structure 34 disposed at the proximal end; the hoop structure 34 is fixedly connected to the papillary muscle tissue.

[0091] In this embodiment, the repair device is preinstalled in the delivery system. The delivery system enters the left ventricle through the apex and then moves upward to the left atrium to release the fixed structure 1 to fit the mitral valve ring. The delivery system is then operated to insert the tissue anchor 7 into the anchoring area 121 and the fitted valve ring tissue. The delivery system is continued to be operated to release the repair device until the hoop structure 34 is fixedly connected to the papillary muscle tissue to complete the implantation.

[0092] The foregoing description of several embodiments of the present application is provided for the purpose of illustration. The foregoing description is not intended to be exhaustive, nor is it intended to limit the present application to the precise configurations, structures and / or steps disclosed. Obviously, based on the above teachings, it is possible for a person of ordinary skill in the art to make several variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be subject to the attached claims.

Claims

1. A repair device with an adaptive connection structure, comprising a fixing structure, a closing member and a pulling member, characterized in that: The adaptive connection structure is arranged between the fixed structure and the closing member, and the adaptive connection structure includes an elastic connection unit and a movable connection unit, the two ends of the elastic connection unit are respectively connected to the fixed structure and the closing member, and the two sides of the elastic connection unit are free and unconstrained; and the movable connection unit includes a movable member and a connecting member, the movable member is movably connected to the fixed structure, and the connecting member is connected to the closing member.

2. The repair device with an adaptive connection structure according to claim 1, characterized in that: The fixing structure includes a supporting frame and an anchoring unit, wherein the supporting frame is connected to the elastic connecting unit; and the supporting frame includes a limiting structure, wherein the limiting structure is connected to the movable part.

3. The repair device with adaptive connection structure according to claim 2, characterized in that: The limiting structure includes a limiting member and a limiting wire, the movable member passes through the limiting member, and the limiting wire is wound around the limiting member and the movable member; and the movable member is in a circular ring shape or a ring shape.

4. The repair device with an adaptive connection structure according to claim 2, characterized in that: The anchoring unit at least partially overlaps with the elastic connection unit; and the anchoring unit includes at least two anchoring regions, and the anchoring regions have no intersection with the elastic connection unit in projection.

5. The repair device with an adaptive connection structure according to claim 1, characterized in that: The connecting member includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are at a certain angle; and the first connecting portion and the second connecting portion are in an arc shape.

6. The repair device with an adaptive connection structure according to claim 1, characterized in that: The connecting piece is connected to the distal end of the closing piece, and the shape of the connecting piece is the same as the contour of the distal end of the closing piece.

7. The repair device with an adaptive connection structure according to claim 2, characterized in that: The movable part is arranged between the elastic connection unit and the anchoring unit; and the anchoring unit completely covers or fits the movable part.

8. The repair device with an adaptive connection structure according to claim 1, characterized in that: The movable member and the connecting member are connected in one piece; or, the movable member and the connecting member are connected in a separate piece.

9. The repair device with an adaptive connection structure according to claim 1, characterized in that: A support structure is provided at the proximal end of the closure member, and the support structure includes a first closed loop, a second closed loop and a third closed loop; and the second closed loop has the largest size and is provided in the middle position of the support structure.

10. The repair device with adaptive connection structure according to claim 9, characterized in that: The pulling member includes a first pulling wire, a second pulling wire and a third pulling wire, which are respectively connected to the first closed loop, the second closed loop and the third closed loop; and the lengths of the first pulling wire, the second pulling wire and the third pulling wire gradually increase.

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