A precisely positionable repair system

Abstract

The application relates to the field of medical devices, in particular to a repair system capable of accurate positioning, which comprises a delivery catheter, a positioning support arranged in the delivery catheter, an anchoring mechanism, a flexible sleeve and a guide wire, the positioning support is arranged at the distal end of the delivery catheter, the positioning support is provided with a plurality of anchoring points distributed in the circumferential direction, the flexible sleeve is provided with a plurality of connecting points arranged in correspondence with the anchoring points, the guide wire passes through the connecting points and the anchoring points corresponding to the connecting points in sequence, and after the positioning support is released, the anchoring mechanism pushes the flexible sleeve, so that the flexible sleeve cooperates with the guide wire and guides the anchoring mechanism to reach each anchoring point along a predetermined route and complete anchoring; the application not only simplifies the structure of the device, but also realizes accurate guidance.

Description

Technical Field

[0001] The present application belongs to the field of medical devices, and specifically relates to a repair system that can be precisely positioned. Background Art

[0002] Minimally invasive interventional medical technology has emerged as a highly effective diagnostic and treatment method in recent years. Its advantages include minimal trauma, ease of use, precise insertion site, and minimal complications. It has become one of the most important diagnostic and treatment options for cardiovascular and cancer diseases. During interventional procedures, specialized physicians typically manually manipulate specialized devices to guide one or more slender, flexible catheters of varying shapes and functions through the complex and diverse internal environments of the patient's cardiovascular system, delivering catheters, guidewires, stents, and other devices to the intended lesion for minimally invasive treatment. Mitral valve disease is a common heart valve disease in adults. Mitral regurgitation (MR) is a serious condition affecting patients. Normally, the mitral valve in the human heart acts as a hemostatic valve, preventing the backflow of oxygen-rich blood from the lungs into the left atrium. MR occurs when the mitral valve closes improperly or becomes misaligned, significantly reducing cardiac pumping efficiency and even leading to heart failure. Mitral regurgitation is categorized as either functional or degenerative. Functional mitral regurgitation (FMR) is characterized by mitral annular dilatation, inadequate leaflet coaptation, and tethered mitral valve leaflets, resulting from left ventricular dysfunction and remodeling. The poor outcomes and high risks of surgical mitral valvuloplasty have driven the search for catheter-based and minimally invasive alternatives, such as percutaneous edge-to-edge repair, indirect annuloplasty, and direct annuloplasty. Mitral annuloplasty is one of the most common surgical procedures for FMR.

[0003] Patent US69 / 106924 discloses an internal catheter (20) extending through a cavity to a heart (42) of a subject, and a tether (69) extending distally from a first end of the tether through the internal catheter, encircling a distal portion (22) of the heart. The internal catheter is at the subject's heart, then extends proximally next to the internal catheter, terminating at a second end of the tether outside the subject, such that both ends of the tether are disposed outside the subject. An anchor (150) advances along the first portion of the tether through the internal catheter and anchors around the heart's valve annulus, such that the tether forms a ring around the valve annulus. Outside the subject, the first and second ends of the tether are slidably coupled, and the resulting slidable coupling advances toward the heart, such that the tether forms a closed ring around the valve annulus. In this solution, multiple anchoring points need to rely on medical imaging to find their positions, resulting in a very lengthy intraoperative time, which is extremely detrimental to the patient's postoperative recovery and can cause multiple complications. Furthermore, there is no guidance mechanism to guide the anchoring system during anchoring, making it difficult for the operator to accurately anchor to the target position, placing extremely high demands on the operator and resulting in a high surgical failure rate.

[0004] Therefore, technicians in this field are committed to developing a repair system that can be precisely positioned, mainly to solve the following problems: 1. When multiple anchoring is required, how to quickly and accurately deliver the anchoring system to the desired target position; 2. How the anchoring system can output anchoring needles multiple times and continuously. Application Contents

[0005] The purpose of this application is to provide a repair system that can be precisely positioned. The new anchoring mechanism has the following advantages: 1. Pulling the anchoring mechanism back and forth can make the anchoring mechanism reach the expected anchoring position along the predetermined route formed by the flexible kit and the guide wire. Especially when anchoring multiple times, there is no need to repeatedly search for the position through images, and the operation is convenient and accurate; 2. After the first anchoring needle is output, the elastic part can automatically push the second anchoring needle to the distal end of the anchoring tube to continue anchoring, without the need for unnecessary operations, which can significantly save surgical time.

[0006] In order to solve the above technical problems, the present application solves them through the following technical solutions: a repair system that can be precisely positioned, comprising a delivery catheter, a positioning bracket arranged in the delivery catheter, an anchoring mechanism, a flexible kit and a guide wire, wherein the positioning bracket is arranged at the distal end of the delivery catheter, the positioning bracket is provided with a plurality of anchoring points distributed along the circumferential direction, and the flexible kit is provided with a plurality of connection sites corresponding to the anchoring points, wherein the guide wire passes through the connection sites and the anchoring points corresponding to the connection sites in sequence, and after the positioning bracket is released, the anchoring mechanism pushes the flexible kit so that the flexible kit cooperates with the guide wire and guides the anchoring mechanism to reach each anchoring point along a predetermined route and complete the anchoring.

[0007] As a further improvement of the present invention, the positioning stent has a preset shape, and after the positioning stent is released, the multiple anchoring points are closely attached to the expected anchoring positions on the heart tissue.

[0008] As a further improvement of the present invention, the portion where the guide wire is connected to the positioning stent has a preset shape that matches the autologous valve annulus.

[0009] As a further improvement of the present invention, the guide wire is rigid. After the positioning stent is released, the guide wire returns to a preset shape, and the flexible sleeve is subjected to the force of the guide wire. At this time, the shape of the flexible sleeve is consistent with the guide wire, so that the flexible sleeve fits the autologous valve ring tissue.

[0010] As a further improvement of the present invention, the distal end portion of the anchoring mechanism is sleeved within the flexible sleeve.

[0011] As a further improvement of the present application, the pushing of the anchoring mechanism makes the anchoring mechanism reach the first anchoring point on the positioning support along the flexible sleeve and complete anchoring, the withdrawing of the guide wire makes the guide wire disengage from the first connection point, and the withdrawing of the anchoring mechanism to the second anchoring point on the positioning support and complete anchoring.

[0012] As a further improvement of the present application, the distal end of the guide wire is provided with an anti-disengaging structure, and the anti-disengaging structure is wavy.

[0013] As a further improvement of the present application, the connection point is provided with a connecting ring, and the guide wire passes through the connecting ring to form a detachable connection after the connecting ring passes through the anchoring point.

[0014] As a further improvement of the present application, when the anchoring mechanism completes anchoring once, the guide wire is withdrawn from the anchored connection point, so that the anchored connection point is separated from the guide wire and the anchoring point.

[0015] As a further improvement of the present application, the flexible sleeve comprises a fabric layer, a shrink ring skeleton wrapped in the fabric layer, and a control member for controlling the shrinkage of the shrink ring skeleton, wherein when the flexible sleeve is anchored to the target tissue, operating the control member can make the shrink ring skeleton drive the autologous valve ring to shrink.

[0016] As a further improvement of the present application, the flexible sleeve is designed in a tubular structure, the distal end of the anchoring mechanism is sleeved in the flexible sleeve, the fabric layer of the flexible sleeve can limit the anchoring mechanism from deviating from the guide path, and the flexible sleeve can cooperate with the guide wire and the positioning support to complete accurate guidance of the anchoring mechanism, while the guide wire also serves as a disassembly wire to detach the flexible sleeve from the positioning support, so that the guide wire plays a role of guiding first and then disassembling, which simplifies the operation of the surgery and saves the components in the delivery catheter, thereby reducing the pipe diameter of the delivery catheter and the operation of the operator.

[0017] As a further improvement of the present application, a limiting ring is arranged in the flexible sleeve, the limiting ring is elastic, the diameter of the limiting ring is less than or equal to the pipe diameter of the anchoring mechanism, and the limiting ring is arranged at the connection point.

[0018] As a further improvement of the present application, the control handle end of the anchoring system is provided with a scale for controlling the withdrawal distance of the anchoring mechanism, so that after the anchoring mechanism completes the first anchoring point, the anchoring mechanism is withdrawn according to the preset scale distance, and the distal end of the anchoring mechanism is located between the first connection point and the second connection point, which can effectively avoid the misoperation of the instrument and improve the accuracy of anchoring.

[0019] As a further improvement of the present invention, the diameter of the limiting ring is smaller than the tube diameter of the anchoring mechanism, so that the anchoring mechanism will not deviate from the preset connection site when it is pushed toward the distal end again after being withdrawn.

[0020] As a further improvement of the present invention, the anchoring mechanism includes an anchoring tube, an inner core rod arranged inside the anchoring tube, an elastic member and a plurality of anchoring needles. The distal end of the anchoring tube is provided with an internal thread, and the outer periphery of the anchoring needle is provided with an external thread matching the internal thread. The elastic member and the plurality of anchoring needles are sleeved on the inner core rod, and rotating the inner core rod can drive the anchoring needle to rotate. When pre-installed, the plurality of anchoring needles are sequentially arranged at the distal end of the elastic member, and the elastic member is in a pre-tightened state, so that when the farthest end anchoring needle is output, the adjacent anchoring needle is automatically pushed to the farthest end of the anchoring tube by the elastic member.

[0021] As a further improvement of the present invention, the anchoring needle is provided with a through hole, and the distal end of the inner core rod is provided with a rotating sleeve that cooperates with the through hole. When the inner core rod is rotated, the rotating sleeve can drive the anchoring needle to rotate.

[0022] As a further improvement of the present invention, the inner core rod is a round rod, and the rotating sleeve is located at the internal thread of the outer tube, wherein rotating the inner core rod can drive the farthest anchoring needle to rotate, while the remaining anchoring needles remain stationary.

[0023] Compared with the prior art, the advantages of this application are:

[0024] 1. In the prior art, when the anchoring system needs to be anchored multiple times, it is necessary to rely on images to find the anchoring position, which results in a lengthy operation time and low anchoring accuracy. In one embodiment of the present application, after the positioning stent is released, the preset shape of the positioning stent and the guide wire will drive the flexible sleeve to fit the autologous valve ring tissue, so that each anchoring point is close to the heart tissue to be anchored, and the anchoring mechanism is pushed distally along the path of the flexible sleeve to reach the preset anchoring point and complete the anchoring. Subsequently, the guide wire is detached from the first anchoring point, and the first anchoring point is partially anchored. Separate from the instrument, during the second anchoring, retract the anchoring mechanism to the second anchoring point, repeat the above operation to accurately anchor the flexible kit at the expected position, wherein the guide wire can not only drive the flexible kit to fit the autologous valve ring tissue, so that the anchoring mechanism can accurately reach the expected anchoring position, without the need to repeatedly search for the position through images, but also serve as a disassembly wire, and can quickly separate the flexible kit from the instrument, simplifying the operation of the instrument, and avoiding the repeated setting of the disassembly wire in the catheter, effectively reducing the loading tube diameter, which has great clinical significance.

[0025] 2. Different from the prior art, in one embodiment of the present application, after the positioning stent is released, the periphery of the positioning stent can be in close contact with the diseased autologous valve annulus tissue. At the same time, the guide wire that matches the morphology of the autologous valve annulus cooperates with the positioning stent to effectively "shape" the flexible kit, so that when the anchoring mechanism is pushed toward the distal end along the flexible kit, its anchoring mechanism can accurately reach the expected anchoring point, that is, complete the guided positioning, and withdraw the guide wire to achieve the disassembly and separation between the flexible kit and the delivery device. The operation is convenient and reliable, and the intraoperative time can be significantly shortened.

[0026] 3. Different from the prior art, in one embodiment of the present application, the fabric layer of the flexible kit can limit the anchoring mechanism from deviating from the guide path. At the same time, the flexible kit, as an implantable device for repairing autologous valves, can be equipped with a guide wire and a positioning stent to accurately guide the anchoring mechanism and repair the autologous valve, thereby simplifying the internal structure of the delivery device and the implantable device, greatly reducing the loading diameter of the delivery catheter, and at the same time, simplifying the surgical operation, shortening the intraoperative time, avoiding and reducing postoperative complications, and facilitating the patient's later recovery.

[0027] 4. Different from the prior art, in one embodiment of the present application, a limit ring is further provided in the flexible kit. The limit ring is set at each connection point, which can effectively prevent the anchoring mechanism from moving excessively when pushed, and can ensure the accuracy of its anchoring position.

[0028] 5. Unlike the prior art, which requires a long time for continuous anchoring, is cumbersome to operate, and may cause damage to the patient's blood vessels, in one embodiment of the present application, multiple anchoring needles are pre-installed inside the anchoring tube, and the elastic member is in a pre-tightened state. When the anchoring needle at the farthest end is rotated by the inner core rod and output to the outside of the anchoring tube, the remaining anchoring needles will be automatically pushed to the far end by the elastic member. When anchoring is needed again, the anchoring needle can be anchored at the required position by simply rotating the inner core rod. The continuous anchoring requires fewer operating steps and a shorter intraoperative time. There is no need to rotate the inner core rod for a long time to avoid possible damage to the patient's blood vessels. The device has high safety and stable performance, and has good clinical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the conveying system of the present invention.

[0030] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0031] Figure 3 Schematic diagram of the positioning bracket structure in the conveying system of the present invention.

[0032] Figure 4 and Figure 5Schematic diagram of the flexible kit in the conveying system of the present invention.

[0033] Figure 6 Schematic diagram of the relationship between the flexible kit and the anchoring mechanism in the delivery system of the present invention.

[0034] Figures 7-9 Schematic diagram of the anchoring mechanism structure in the conveying system of the present invention.

[0035] Figures 10-15 The working principle diagram of the conveying system of the present invention

[0036] The names of the parts indicated by the numbers in the accompanying drawings are as follows: 1-delivery catheter, 2-positioning stent, 21-anchoring point, 3-anchoring mechanism, 31-anchoring tube, 311-internal thread, 32-inner core rod, 321-external thread, 33-elastic member, 34-anchoring needle, 341-through hole, 35-rotating sleeve, 4-flexible kit, 41-connection site, 42-connecting ring, 43-limiting ring, 44-fabric layer, 45-shrinkage ring skeleton, 46-control member, 5-guide wire, 51-anti-slip structure. Implementation Method

[0037] The present application is further described in detail below with reference to the accompanying drawings and embodiments.

[0038] The proximal end mentioned in this application refers to the end close to the surgical operator, and the distal end refers to the end far away from the surgical operator. Specific embodiments

[0039] like Figure 1 As shown, when the anchoring system is used for mitral valve ring plasty treatment, a repair system with precise positioning includes a delivery catheter 1, a positioning stent 2 arranged in the delivery catheter 1, an anchoring mechanism 3, a flexible kit 4 and a guide wire 5, wherein the flexible kit 4 includes a fabric layer 44, a ring skeleton 45 wrapped in the fabric layer 44 and a control member 46 for controlling the contraction of the ring skeleton 45, as shown in FIG. Figure 4 and Figure 5 As shown, the positioning stent 2 is arranged at the distal end of the delivery catheter 1, and the positioning stent 2 is provided with a plurality of anchoring points 21 distributed along the circumference, and the positioning stent 2 has a predetermined shape (its predetermined shape matches the shape of the patient's mitral valve annulus), as shown in FIG. Figure 3 As shown, the distal end of the guide wire 5 also has a preset shape that matches the mitral valve annulus. When pre-installed, the positioning stent 2 is compressed in the delivery catheter 1. When the distal end of the delivery catheter 1 reaches the target position, as shown in FIG. Figure 10 As shown, the positioning stent 2 is released from the delivery catheter 1, and the distal end of the anchoring point 21 is located at the expected anchoring position (ie, the native valve ring). Figure 11As shown; the flexible sleeve 4 is provided with a plurality of connection sites 41 corresponding to the anchoring points 21, wherein the distal end portion of the guide wire 5 sequentially passes through the connection sites 41 and the anchoring points 21 corresponding to the connection sites 41, as Figure 1 and Figure 2 As shown, after the positioning bracket 2 is released, the anchoring mechanism 3 pushes the flexible kit 4 along the inside of the fabric layer 44, so that the anchoring mechanism 3 reaches the first anchoring point 21 according to the predetermined route and completes the anchoring, as shown in FIG. Figure 11 and Figure 12 As shown, the guide wire 5 is then operated to separate from the first anchoring point 21, and the anchoring mechanism 3 is retracted and pushed toward the distal end again, so that the anchoring mechanism 3 presses against the second connection site 41 and reaches the corresponding second anchoring point 21 along the guide wire 5, and the anchoring mechanism 3 is operated to complete the anchoring, as shown in FIG. Figure 13 As shown, repeating the above operation can guide the anchoring mechanism 3 to each anchoring point 21 along the predetermined route and complete the anchoring. After the flexible kit 4 is anchored to the target tissue, operating the control member 46 can cause the shrinking ring frame 45 to drive the autologous valve ring to shrink, as shown in FIG. Figure 14 As shown, to complete the repair of the native valve, as Figure 15 shown.

[0040] In this embodiment, the positioning stent 2 has a preset shape, and after the positioning stent 2 is released, the multiple anchoring points 21 are closely attached to the expected anchoring positions on the heart tissue.

[0041] In this embodiment, the portion where the guide wire 5 is connected to the positioning stent 2 has a preset shape that matches the autologous valve annulus.

[0042] In this embodiment, the guide wire 5 is rigid. After the positioning stent 2 is released, the guide wire 5 returns to a preset shape. The flexible sleeve 4 is subjected to the force of the guide wire 5. At this time, the shape of the flexible sleeve 4 is consistent with the guide wire 5, so that the flexible sleeve 4 fits the autologous valve ring tissue. Figure 11 shown.

[0043] In this embodiment, the anchoring mechanism 3 is pushed so that the anchoring mechanism 3 reaches the first anchoring point on the positioning bracket 2 along the flexible sleeve 4 and completes the anchoring. Figure 12 As shown, the guide wire 5 is withdrawn so that the guide wire 5 is separated from the first connection site, and the anchoring mechanism 3 is withdrawn to the second anchoring point on the positioning stent 2 and the anchoring is completed, as shown in FIG. Figure 13 shown.

[0044] In this embodiment, the distal end of the anchoring mechanism 3 is sleeved in the flexible sleeve 4.Figure 6 shown.

[0045] In this embodiment, the distal end of the guide wire 5 is provided with an anti-slip structure 51 , and the anti-slip structure 51 is wavy.

[0046] In this embodiment, the linking site 41 is provided with an adapter ring 42, such as Figure 4 As shown, after the connecting ring 42 passes through the anchor point 21, the guide wire 5 passes through the connecting ring 42 to form a detachable connection, as shown in FIG. Figure 1 and Figure 2 shown.

[0047] In this embodiment, the flexible sleeve 4 is designed as a tubular structure, and the distal end of the anchoring mechanism 3 is sleeved in the flexible sleeve 4. The fabric layer 44 of the flexible sleeve 4 can limit the anchoring mechanism 3 from deviating from the guide path, and the flexible sleeve 4 can cooperate with the guide wire 5 and the positioning bracket 2 to complete precise guidance for the anchoring mechanism 3. At the same time, the guide wire 5 serves as a disassembly wire, so that the flexible sleeve 4 and the positioning bracket 2 are detachable. The guide wire 5 plays the role of guiding first and then disassembling, which not only simplifies the surgical operation but also saves components in the delivery catheter 1, which is conducive to reducing the diameter of the delivery catheter 1 and the operator's operation.

[0048] In this embodiment, a limiting ring 43 is provided in the flexible sleeve 4. Figure 5 As shown, the limiting ring 43 is elastic, the diameter of the limiting ring 43 is smaller than or equal to the diameter of the anchoring mechanism 3 , and the limiting ring 43 is arranged at the connection point 41 .

[0049] In this embodiment, the control handle end of the anchoring system is provided with a scale for controlling the retraction distance of the anchoring mechanism 3, so that after the anchoring mechanism 3 completes the first anchoring point 21, the anchoring mechanism 3 is retracted according to the preset scale distance, and the distal end of the anchoring mechanism 3 is located between the first connection site 41 and the second connection site 41, which can effectively avoid misoperation of the instrument and improve the accuracy of anchoring.

[0050] In this embodiment, the diameter of the limiting ring 43 is smaller than the diameter of the anchoring mechanism 3, so that the anchoring mechanism 3 will not deviate from the preset connection point 41 when it is pushed toward the distal end again after being withdrawn.

[0051] In this embodiment, Figure 7 As shown, the anchoring mechanism 3 includes an anchoring tube 31, an inner core rod 32 arranged inside the anchoring tube 31, an elastic member 33 and a plurality of anchoring needles 34 (the anchoring needles 34 are spiral needles). The distal end of the anchoring tube 31 is provided with an internal thread 311, and the outer periphery of the anchoring needle 34 is provided with an external thread 321 that matches the internal thread 311. Figure 8As shown, the elastic member 33 and the multiple anchoring needles 34 are sleeved on the inner core rod 32, and rotating the inner core rod 32 can drive the anchoring needles 34 to rotate. When pre-installed, the multiple anchoring needles 34 are sequentially arranged at the distal end of the elastic member 33, and the elastic member 33 is in a pre-tightened state, so that when the distalmost anchoring needle 34 is output, the adjacent anchoring needles 34 are automatically pushed to the distal end of the anchoring tube 31 by the elastic member 33.

[0052] In this embodiment, the anchoring needle 34 is provided with a through hole 341. Figure 9 As shown, the distal end of the inner core rod 32 is provided with a rotating sleeve 35 that cooperates with the through hole 341, as shown in FIG. Figure 7 As shown, when the inner core rod 32 is rotated, the rotating sleeve 35 can drive the anchoring needle 34 to rotate.

[0053] In this embodiment, the inner core rod 32 is a circular rod, and the rotating sleeve 35 is located at the internal thread 311 of the outer tube, wherein rotating the inner core rod 32 can drive the farthest anchoring needle 34 to rotate, while the remaining anchoring needles 34 remain stationary.

[0054] In this embodiment, a bending adjustment structure is provided at the distal end of the anchoring tube 31, so that the anchoring tube 31 can conform to the guidance of various angles during the needle guiding.

[0055] The foregoing description of several embodiments of the present application has been presented for illustrative purposes. It is not intended to be exhaustive or to limit the present application to the precise configurations, configurations, and / or steps disclosed, and it is apparent that many modifications and variations are possible in light of the above teachings. It is intended that the scope of the invention and all equivalents thereof be defined by the appended claims.

Claims

1. A precisely positioned repair system comprising a delivery catheter, a positioning stent disposed within the delivery catheter, an anchoring mechanism, a flexible sleeve, and a guide wire, wherein the positioning stent is disposed at the distal end of the delivery catheter and has multiple circumferentially distributed anchoring points, characterized in that: The flexible sleeve is provided with a plurality of connection sites corresponding to the anchoring points, wherein the guide wire passes through the connection sites and the anchoring points corresponding to the connection sites in sequence, and after the positioning bracket is released, the anchoring mechanism pushes the flexible sleeve so that the flexible sleeve cooperates with the guide wire and guides the anchoring mechanism to reach each anchoring point along a predetermined route and completes anchoring, the distal end of the anchoring mechanism is sleeved in the flexible sleeve, pushing the anchoring mechanism so that the anchoring mechanism reaches the first anchoring point on the positioning bracket along the flexible sleeve and completes anchoring, and the guide wire is withdrawn so that the guide wire is detached from the first connection site. The anchoring mechanism is withdrawn to the second anchoring point on the positioning bracket and the anchoring is completed; the anchoring mechanism includes an anchoring tube, an inner core rod arranged inside the anchoring tube, an elastic member and a plurality of anchoring needles, the distal end of the anchoring tube is provided with an internal thread, the outer periphery of the anchoring needle is provided with an external thread matching the internal thread, the elastic member and the plurality of anchoring needles are sleeved on the inner core rod, and rotating the inner core rod can drive the anchoring needle to rotate. When pre-installed, the plurality of anchoring needles are sequentially arranged at the distal end of the elastic member, and the elastic member is in a pre-tightened state, so that when the distalmost anchoring needle is output, the adjacent anchoring needle is automatically pushed to the distal end of the anchoring tube by the elastic member.

2. The repair system capable of precise positioning according to claim 1, characterized in that: The positioning stent has a preset shape, and after the positioning stent is released, the multiple anchoring points are closely attached to the expected anchoring positions on the heart tissue.

3. The repair system capable of precise positioning according to claim 1, characterized in that: The portion where the guide wire is connected to the positioning stent has a preset shape that matches the autologous valve ring.

4. The repair system capable of precise positioning according to claim 3, characterized in that: The guide wire is rigid. After the positioning stent is released, the guide wire returns to a preset shape and enables the flexible sleeve to fit the autologous valve ring tissue.

5. The repair system capable of precise positioning according to claim 1, characterized in that: The distal end of the guide wire is provided with an anti-slip structure, and the anti-slip structure is wavy.

6. The repair system capable of precise positioning according to claim 1, characterized in that: A connecting ring is provided on the connection site, and after the connecting ring passes through the anchoring point, the guide wire passes through the connecting ring to form a detachable connection.

7. The repair system capable of precise positioning according to claim 1, characterized in that: After the anchoring mechanism completes one anchoring operation, the guide wire is pulled out of the anchored connection point, so that the anchored connection point is separated from the guide wire and the anchor point.

8. The repair system capable of precise positioning according to claim 1, characterized in that: The flexible kit includes a fabric layer, a shrinkage ring frame wrapped in the fabric layer, and a control component for controlling the shrinkage of the shrinkage ring frame. When the flexible kit is anchored to the target tissue, operating the control component can cause the shrinkage ring frame to drive the autologous valve ring to shrink.

9. The repair system capable of precise positioning according to claim 1, characterized in that: A limiting ring is provided in the flexible sleeve. The limiting ring is elastic and has a diameter smaller than or equal to the diameter of the anchoring mechanism. The limiting ring is also provided at the connection site.

10. The repair system capable of precise positioning according to claim 1, characterized in that: The anchoring needle is provided with a through hole, and the distal end of the inner core rod is provided with a rotating sleeve that cooperates with the through hole. When the inner core rod is rotated, the rotating sleeve can drive the anchoring needle to rotate.

11. The repair system capable of precise positioning according to claim 10, characterized in that: The inner core rod is a circular rod, and the rotating sleeve is located at the internal thread of the outer tube. Rotating the inner core rod can drive the farthest anchoring needle to rotate, while the other anchoring needles remain stationary.

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