Device, apparatus and system for heart valve repair

Abstract

Disclosed in the present invention are a heart valve repair device, apparatus and system. The device is used as a carrier for an annuloplasty ring when the annuloplasty ring is implanted into a valve annulus, and comprises a first carrier, which matches the annuloplasty ring in terms of shape, wherein the first carrier is provided with a cord loop, which is configured to connect to an artificial tendinous cord; two ends of the cord loop are in a wound connection with a connecting unit, and a wound connection structure of the cord loop and the connecting unit is fitted with a limiting structure provided on the first carrier, so that the cord loop and the connecting unit can be stably connected to the first carrier; and when the connecting unit is pulled out from the connection with the cord loop, the cord loop can be disconnected from the first carrier, so that the cord loop can be pulled out from the connection with the artificial tendinous cord. By means of the present invention, an artificial tendinous cord can be separated from the cord loop without the need to cut the cord loop, such that the surgical difficulty of artificial tendinous cord implantation is reduced, the time required for surgical operations can be shortened, and possible safety risks resulting from cutting operations are avoided.

Description

Devices, apparatus and systems for heart valve repair Technical Field

[0001] The present invention belongs to the technical field of heart valve repair, and in particular relates to a device, an apparatus and a system that can be used for repairing chordae tendineae during heart valve repair surgery. Background Art

[0002] Valvular regurgitation accounts for a significant proportion of heart valve disease cases. Valvular regurgitation is often caused by incomplete closure of the valve leaflets, which results in reverse blood flow and insufficient blood supply. Besides leaflet calcification, another major cause of leaflet regurgitation is an enlarged annulus leading to poor leaflet coaptation and ruptured chordae tendineae, which results in leaflet drag.

[0003] For valve regurgitation caused by lax leaflet coaptation due to enlarged annular ring size, heart valves are usually repaired by implanting an annular ring. Valve regurgitation caused by ruptured chordae tendineae is caused by the inability of the ruptured chordae tendineae to effectively constrain the leaflets, causing the leaflets to flip into the atrium during operation, making it impossible for the leaflets to close and causing regurgitation. In this case, artificial chordae tendineae are usually implanted to replace the ruptured chordae tendineae for repair. Usually, the implantation of artificial chordae tendineae is performed at the same time as the implantation of the annular ring, and is usually performed after the implantation of the annular ring. During the implantation of the artificial chordae tendineae, the length of the chordae tendineae needs to be adjusted to adjust the closing state of the leaflets. In this process, the leaflets are usually stretched to the coapted state first, and then the position of the ruptured chordae tendineae on the leaflets in this state is used as a reference. The artificial chordae tendineae connected to the papillary muscles are connected to the leaflets at this position to ensure the accuracy of the implantation size of the artificial chordae tendineae between the leaflets and the papillary muscles. This accuracy has an important impact on the performance of the artificial chordae tendineae.

[0004] Summary of the Invention

[0005] The object of the present invention is to provide a device, apparatus and system for heart valve repair, so as to provide assistance for the implantation of artificial chordae tendineae during the heart valve shaping ring implantation surgery and ensure the accuracy of the implantation size of the artificial chordae tendineae.

[0006] The present invention is achieved through the following technical solutions:

[0007] A device for heart valve repair, used as a carrier for a heart valve annulus when implanting a heart valve annulus, comprising a first carrier matching the shape of the heart valve annulus, the first carrier being provided with a cable sleeve for connecting artificial chordae tendineae;

[0008] The cable sleeve is respectively connected to a connecting unit at both ends, and the winding connection structure of the cable sleeve and the connecting unit cooperates with the limiting structure provided on the first carrier, so that the cable sleeve and the connecting unit can be firmly connected to the first carrier;

[0009] When the connecting unit is pulled out from the connection with the sheath, the connection between the sheath and the first carrier can be released, so that the sheath can be pulled out from the connection with the artificial chord.

[0010] In some embodiments, the limiting structure is a plurality of holes provided on the first carrier. One end of the flexible wire is inserted into the hole, and after passing through the hole, it crosses with the connection unit and is wrapped around the connection unit, and then is inserted into the hole again and passed through the hole. Through this threading method, the flexible wire is connected to the connection unit at the position of the hole.

[0011] By adopting this threading method, the flexible wire is connected to the connection unit at the corresponding position of each hole along the routing direction, and a rope loop is formed between two adjacent holes, which is respectively wound and connected to the connection unit at both ends.

[0012] In some embodiments, the size of the structure formed by the winding connection between the rope sleeve and the connecting unit is larger than the size of the hole, so that the rope sleeve can be clamped at the hole opening position at one end of the hole when the winding connection structure with the connecting unit is connected.

[0013] In some embodiments, one end of the hole is connected to one end surface of the first carrier for placing the forming ring, and the other end is connected to the other end surface opposite to the first carrier.

[0014] In some embodiments, the connecting unit is disposed on one end surface of the first carrier for placing the forming ring, and one end of the connecting unit extends out to the other end surface opposite to the first carrier.

[0015] In some embodiments, the first carrier includes a horizontal portion and a vertical portion arranged along the inner side of the horizontal portion, a space for placing a forming ring is formed between the horizontal portion and the vertical portion, and the connecting unit is arranged on one side of the first carrier where the forming ring is placed and is located at the transition connection position between the horizontal portion and the vertical portion.

[0016] In some embodiments, the connecting unit is a flexible member.

[0017] In another aspect, the present invention further provides a device for repairing a heart valve, which can be implanted into the valve annulus for repairing the valve annulus, and comprises a second carrier that matches the shape of the valve annulus, the second carrier being provided with a cable sleeve for connecting an artificial chordae tendineae;

[0018] The cable sleeve is respectively connected to a connecting unit at both ends, and the winding connection structure of the cable sleeve and the connecting unit cooperates with the limiting structure provided on the second carrier, so that the cable sleeve and the connecting unit can be firmly connected to the second carrier;

[0019] When the connecting unit is pulled out from the connection with the sheath, the connection between the sheath and the second carrier can be released, so that the sheath can be pulled out from the connection with the artificial chord.

[0020] In some embodiments, the limiting structure is a plurality of holes provided on the second carrier. One end of the flexible wire is inserted into the hole, and after passing through the hole, it crosses with the connection unit and is wrapped around the connection unit, and then is inserted into the hole again and passed through the hole. Through this threading method, the flexible wire is connected to the connection unit at the position of the hole.

[0021] By adopting this threading method, the flexible wire is connected to the connection unit at the corresponding position of each hole along the routing direction, and a rope loop is formed between two adjacent holes, which is respectively wound and connected to the connection unit at both ends.

[0022] On the other hand, the present invention further provides a system for repairing a heart valve, comprising a handle base and the device, wherein the handle base is connected to a first carrier of the device via a binding wire.

[0023] In some embodiments, connection structures are provided at multiple positions along the circumference of the first carrier, and a binding wire is used to cooperate with each connection structure along the routing direction to fix the handle base to the first carrier.

[0024] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0025] By arranging the cable sleeve on the first carrier or the second carrier, auxiliary positioning can be provided for the implantation of artificial chordae tendineae during the heart valve shaping ring implantation operation, thereby ensuring the accuracy of the implantation size of the artificial chordae tendineae.

[0026] The structure in which the cable sleeve is arranged on the second carrier can solve the influence on the forming ring structure that may be caused when the cable sleeve is arranged on the forming ring.

[0027] By improving the connection structure of the cable sleeve on the first carrier and the second carrier, the separation between the artificial tendon and the cable sleeve can be completed without cutting the cable sleeve, thereby reducing the surgical difficulty of artificial tendon implantation, reducing the time required for the surgical operation, and avoiding the safety risks that may be caused by the cutting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] FIG1 is a schematic structural diagram of an embodiment of a device for heart valve repair according to the present invention in use.

[0030] FIG2 is a schematic structural diagram of the connection mode between the cable sleeve, the connecting unit and the first carrier in the device for repairing a heart valve according to the present invention.

[0031] FIG3 is a schematic structural diagram of the device for heart valve repair according to the present invention during the implantation of artificial chordae tendineae.

[0032] FIG4 is a schematic structural diagram of an embodiment of the first carrier in the device for heart valve repair according to the present invention.

[0033] FIG5 is a schematic structural diagram of an embodiment of a system for heart valve repair according to the present invention.

[0034] in:

[0035] 10. First carrier, 101. Hole, 102. Horizontal portion, 103. Vertical portion, 104. Connecting hole;

[0036] 20. Noose;

[0037] 30. Connecting unit;

[0038] 40. Handle seat;

[0039] 50. Forming ring;

[0040] 60. Artificial chordae tendineae;

[0041] 70. Leaflets. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0043] During heart valve repair surgery, a coronary annulus is implanted to stabilize and reinforce the annulus. The coronary annulus implantation procedure usually involves mounting the coronary annulus on a ring holder, which is then moved to the annulus implantation site via a handle. During coronary annulus implantation, it is sometimes necessary to simultaneously implant artificial chordae to replace broken chordae. Chordae are typically connected between the papillary muscles and the leaflets to tighten the leaflets and thereby restrict them. Therefore, when implanting artificial chordae, the length of the artificial chordae between the papillary muscles and the leaflets will directly affect their ultimate effectiveness and significantly impact their performance. Therefore, the desired implantation length of the artificial chordae needs to be determined during the implantation procedure.

[0044] Based on this demand, the present invention sets a cable loop on the shaping ring or the ring holder. During the artificial chordal implantation surgery, the artificial chordal tendon is connected to the cable loop. The cable loop is used as a positioning reference to stretch the leaflet until it is in the apposition state during normal operation. At this time, the length of the artificial chordal tendon is the length required for implantation, so that the implantation length of the artificial chordal tendon can be accurately determined by this method.

[0045] In one embodiment, the cable loop structure is provided on a shaping ring 50, which is a device for repairing heart valves. The shaping ring 50 is implanted in the valve ring for repairing the valve ring, and includes a second carrier that matches the shape of the valve ring. The second carrier is typically a closed or non-closed D- or C-shaped structure. The second carrier can be a shaping ring of an existing structure or an artificial valve ring. A plurality of cable loops 20 for connecting artificial tendons are provided on the second carrier, and a closed loop structure is formed between the cable loop 20 and the second carrier. The number of cable loops on the second carrier is set according to actual needs.

[0046] In the connection method used by the cable sleeve 20 and the second carrier, the cable sleeve is connected to a connecting unit at each end. The winding connection structure of the cable sleeve and the connecting unit cooperates with the limiting structure provided on the second carrier, so that the cable sleeve and the connecting unit can be firmly connected to the second carrier. When the connecting unit is pulled out of the connection between the cable sleeve and the forming ring, the connection between the cable sleeve and the forming ring can be released, allowing the cable sleeve to be pulled out of the connection between the cable sleeve and the artificial tendon. The specific arrangement of the cable sleeve on the second carrier can refer to the connection structure between the cable sleeve and the connecting unit of the first carrier shown in Figure 2. The first carrier in the figure can be regarded as the second carrier, and the second carrier is similar in appearance to the first carrier in Figure 2.

[0047] The advantage of this cable-sleeve connection method is that it eliminates the need to cut the cable when releasing the cable-sleeve connection to the artificial chordae. This improvement has important practical significance in artificial chordae implantation surgery. As we know, due to the numerous limitations of limited operating space and time, heart valve repair surgery places high demands on the convenience and safety of the operating instruments. The performance of the operating instruments directly affects the operability, time required, and ultimate surgical outcome. It is understood that if the cable-sleeve connection is released by cutting the cable, the cable-sleeve cutting operation itself is difficult within the confined operating space and increases the surgical time required. Furthermore, because the cable-sleeve is generally a flexible structure, it deforms when subjected to force, causing the position of the cutting point to change. This can easily scratch the heart valve during the cutting process, causing irreversible damage, or scratch the artificial chordae, affecting their performance. It is precisely based on this problem faced during surgical operations that the device in this embodiment optimizes the connection method of the cable sleeve on the second carrier. When releasing the connection between the cable sleeve and the artificial tendon, it is only necessary to pull out the connecting unit from the connection between the cable sleeve and the second carrier. At this time, the connection between the cable sleeve and the second carrier can be released, and then the cable sleeve can be pulled out from the connection between the artificial tendon, thereby solving the above problem well.

[0048] As for the connection method that the cable sleeve can adopt on the second carrier, a specific connection structure that can achieve the above function is given in the following embodiment. Of course, the connection structure that can be adopted between the two is not limited to this structural form.

[0049] Based on the objectives to be achieved by the present invention, the device in the above-described embodiment solves the problem of providing a positioning reference for determining the length of artificial chordae tendineae during artificial chordae implantation surgery and of enabling convenient access to the chordae for connection to the artificial chordae tendineae. However, it is understood that the device, as a ring for an artificial valve, is to be implanted and retained in the human body to assist the valve ring in operation, and therefore has high requirements for its own stability and reliability. In this case, if a chordae is provided on the annuloplasty ring, it is necessary to improve the structure of the existing annuloplasty ring to achieve the connection and installation of the chordae tendineae. This will inevitably increase the complexity of the annuloplasty ring itself, which will not only affect the structural performance of the annuloplasty ring, but also increase the risks that may arise during the operation of the annuloplasty ring in the human body.

[0050] It is based on this consideration that in one embodiment, a cable sleeve 20 structure is set on a ring holder, which is a device for heart valve repair. The device is used as a carrier of the shaping ring when the shaping ring is implanted on the valve ring. The device includes a first carrier 10 that matches the shape of the shaping ring. The first carrier 10 can be an existing ring holder, and a cable sleeve 20 for connecting artificial tendons is set on the first carrier 10.

[0051] The cable sleeve 20 is respectively wrapped and connected with a connecting unit 30 at both ends. The wrapped connection structure of the cable sleeve 20 and the connecting unit 30 cooperates with the limiting structure provided on the first carrier, so that the cable sleeve 20 and the connecting unit 30 can be firmly connected to the first carrier 10; when the connecting unit is pulled out from the connection between the cable sleeve, the connection between the cable sleeve and the first carrier can be released, so that the cable sleeve can be pulled out from the connection between the artificial tendon.

[0052] The connection structure between the cable sleeve, the connecting unit and the first carrier is characterized in that when the connecting unit is pulled out from the connection with the cable sleeve, the connection between the cable sleeve and the first carrier can be released, so that the cable sleeve can be pulled out from the connection with the artificial tendon.

[0053] In other words, the improvements made to the cable loop structure herein primarily focus on the structure and method of connection between the cable loop and the first carrier. For example, a cable loop 20 is connected to a connecting unit 30 at each end. This "wrapped connection" can be understood as the cable loop being wrapped around the connecting unit to form a connection. This connection method is characterized by a flexible connection between the cable loop and the connecting unit, allowing the connecting unit to be easily withdrawn from the loop by pulling the connecting unit. In other words, the number of wraps can be arbitrary, as long as the aforementioned connection function is achieved. Of course, the "wrapped connection" herein can also be understood more broadly. For example, in addition to wrapping the cable loop around the connecting unit, the cable loop can also be wrapped around a portion of the connecting unit to form a closed loop, which does not affect the aforementioned connection function. Obviously, since the connecting unit itself is flexibly connected to the first carrier, flexibly connecting the cable loop's ends to the connecting unit does not stably connect the cable loop to the first carrier, and the overall closed loop structure formed by the cable loop and the connecting unit is also not stably connected to the first carrier. Therefore, a limiting structure is provided on the first carrier 10. While the cable loop is being wound and connected to the connecting unit, the cable loop is formed into a mating connection with the limiting structure at the connection position between the cable loop and the connecting unit, so that the cable loop and the connecting unit can be firmly connected to the first carrier. Based on this connection structure, the connection structure also has the characteristics that, since the connection unit, the first carrier, and the cable loop are all movably connected at this time, when the connection unit is pulled out of the connection with the cable loop, the connection between the cable loop and the first carrier can be released. At this time, the cable loop is separated from the first carrier, and the cable loop becomes an independent, free line, allowing the cable loop to be pulled out of the connection with the artificial tendon. In this way, the connection between the cable loop and the artificial tendon can be released without cutting the cable loop during the operation. The operation method used in the entire operation process is only to pull out the connection unit and the cable loop from the corresponding structure respectively, which significantly reduces the difficulty of the operation.

[0054] In one embodiment, referring to Figure 1, the limiting structure on the first carrier is a plurality of holes 101 provided on the first carrier 10, and one end of the flexible wire is inserted into the hole 101, and after passing through the hole, it crosses with the connecting unit 30 and is wrapped around the connecting unit 30, and then is inserted into the hole again and passed through the hole. The flexible wire is connected to the connecting unit at the position of the hole through this threading method; this threading method is used to connect the flexible wire with the connecting unit 30 at the corresponding position of each hole along the routing direction, and a rope loop 20 is formed between two adjacent holes, which is respectively wrapped around the connecting unit at both ends. The threading method used is shown in Figure 2; at this time, the rope loop and the connecting unit can be firmly connected to the first carrier.

[0055] Based on the principle of achieving the above-mentioned structural functions, in order to achieve the desired function under this connection method, it is generally necessary to position the functional portion of the formed cable sleeve and the connecting unit at the two ends of the hole respectively. Alternatively, the hole here does not necessarily need to be a hole in the conventional sense. A slot structure that can be passed through by the cable sleeve can also be used, and a portion that can separate the formed cable sleeve and the connecting unit is provided in the slot structure to prevent the entire structure composed of the cable sleeve and the connecting unit from being separated from the first carrier. In other words, the limiting structure here does not necessarily need to be a hole structure, and the location of the connecting unit on the first carrier can also be arbitrarily set according to needs, which is usually determined by the specific setting structure and location of the hole.

[0056] The connecting unit 30 is generally a flexible member, such as a flexible line, rope, etc., so as to facilitate its extraction from the connection of the rope loop.

[0057] Typically, the cable loop needs to be able to withstand a certain amount of force during surgery, so the cable loop needs to be able to remain stably connected to the first carrier 10 under a certain amount of tension. Based on the connection structure and method used between the cable loop 20 and the first carrier 10 in this embodiment, the cable loop 20 is formed by forming a fit between the connecting unit and the hole at both ends, so that the two ends of the cable loop 20 can be fixed at the hole position through the friction force generated between them. However, when the cable loop is subjected to a large tension, the friction force will be overcome, and the problem of slippage at both ends of the cable loop may occur, resulting in the cable loop being unable to provide a reliable connection for the artificial tendon. Therefore, in one embodiment, the size of the structure formed by the cable loop and the connecting unit is set to be larger than the size of the hole, so that the cable loop and the connecting unit can be locked at the hole position at one end of the hole, thereby achieving a more effective fixation of the cable loop. For example, taking the hole as a circular hole, when the winding connection method shown in Figure 2 is adopted between the rope sleeve and the connecting unit, the size of the winding connection structure of the rope sleeve 20 and the connecting unit 30 can be simplified to the sum of twice the diameter of the rope sleeve and the diameter of the connecting unit. When it is larger than the diameter of the hole, it can play the effect of stably fixing the rope sleeve at the connection position; when the hole is set as a square hole, the size relationship based on it is the same.

[0058] The number of holes here is determined according to the number of rope loops required; the locations of the holes on the first carrier 10 are also determined according to the locations of the rope loops on the first carrier.

[0059] In one embodiment, one end of the hole 101 is connected to one end surface of the first carrier 10 for placing the shaping ring 50, and the other end of the hole is connected to the opposite end surface of the first carrier. In this case, the connecting unit 30 is arranged on the end surface of the first carrier for placing the shaping ring. This end surface provides a position limit for the connecting unit. In this setting, one end of the connecting unit 30 is extended through the through hole provided in the shaping ring and is arranged on the opposite end surface of the first carrier. This end surface is usually facing the side where the surgical operation is performed. In this way, the connecting unit can be easily withdrawn from the first carrier 10 during the operation, as shown in Figure 1.

[0060] In one embodiment, the first carrier 10 includes a horizontal portion 102 and a vertical portion 103 disposed along the inner side of the horizontal portion. The horizontal portion 102 and the vertical portion 103 are disposed in different directions, forming a space between the horizontal portion and the vertical portion for placing a forming ring. As shown in FIG4 , the horizontal portion 102 forms an annular structure with an L-shaped cross-section. The horizontal portion 102 and the vertical portion 103 are respectively used to limit a portion of the forming ring. In the first carrier of this structure, the connecting unit 30 is disposed on the end face of the first carrier for placing the forming ring, and the connecting unit 30 is disposed at the transition connection position between the horizontal portion 103 and the vertical portion 103. This can be understood as the structure at this position on the first carrier being able to provide a more stable limiting effect on the connecting unit, and the resulting effect is also obvious.

[0061] Usually, based on the function that the noose is to achieve, the noose 20 is set toward the center side of the ring holder. Based on this structural feature, the position of the hole on the first carrier 10 is set on the side facing the center direction of the first carrier to facilitate the setting of the noose on the first carrier. At the same time, based on the structural feature that the first carrier has an L-shaped cross-section, the hole 101 on the first carrier 10 is actually similar to the groove structure formed at the transition connection position between the horizontal part and the vertical part, as shown in Figure 4. The structural characteristics of the hole formed in this way are that, first, the noose can be better set toward the center direction of the first carrier, and second, it is convenient to use injection molding to form the first carrier, the structure of the mold is simpler, and the hole structure can be formed on the first carrier at the same time, reducing the processing cost of the first carrier.

[0062] In another embodiment, the retaining structure comprises multiple holes 101 provided on the first carrier. The ends of the flexible wire are inserted into two different holes 101, and after exiting the holes, they intersect with the connecting unit and wrap around the connecting unit. The wire is then inserted into its corresponding holes again and exits, forming a loop with both ends intertwined and connected to the connecting unit. This structure is essentially the same as the above embodiment in terms of the loop connection method; this simply provides another possible way to arrange the loop. In this case, each loop can be an independent unit.

[0063] In this embodiment, the loops 20 can be connected to each other at one end. The connection method and structure can be diverse. By connecting the loops, multiple loops are connected to form a line with two free ends, which facilitates the extraction of the loops from the artificial tendon. The connection between the loops can be any method as long as it can form a complete line. Of course, it is generally possible to sequentially connect two adjacent loops at one end.

[0064] Based on the above-mentioned connection structure and connection method of the rope loop on the first carrier, in one embodiment, the same structural form as above is adopted to set the rope loop on the second carrier, and the structure adopted can be: the upper limit structure of the second carrier is a plurality of holes set on the second carrier, and one end of the flexible wire is inserted into the hole, and after passing through the hole, it crosses with the connection unit and is wrapped around the connection unit, and then inserted into the hole again and passed through the hole. The flexible wire is connected to the connection unit at the position of the hole through the threading method; the flexible wire is connected to the connection unit at the corresponding position of each hole along the routing direction using the threading method, and a rope loop is formed between two adjacent holes, which is respectively wrapped around the connection unit at both ends.

[0065] In another embodiment, as shown in FIG5 , a system for heart valve repair is provided, comprising a handle seat 40, which is connected to a first carrier 10 of the device by a binding wire to facilitate separation between the handle seat and the first carrier during surgery, thereby facilitating subsequent implantation of artificial chordae tendineae after implantation of the shaping ring.

[0066] Regarding the specific connection method used between the handle base and the first carrier, connecting structures are provided at multiple locations along the circumference of the first carrier 10. Taking the structures shown in Figures 4 and 5 as an example, the connecting structures can be two connecting holes 104 for threading a binding wire. During connection, a binding wire is used at each connecting structure position along the routing direction. The binding wire cooperates with each connecting structure to fix the three legs of the handle base to the first carrier. The advantage of this structure is that when the handle base is separated from the first carrier, the binding wire can be cut once, which undoubtedly plays a significant role in the entire surgical operation. As for using a binding wire to connect the three legs of the handle base to the first carrier, it is easy to understand in conjunction with Figure 5. For example, the binding wire is passed through a connecting hole of a connecting structure, bypasses the leg at that position, and then passes through another connecting hole at that position. It is then passed through one of the connecting holes of the next connecting structure. After passing through each connecting hole in turn, the two free ends of the binding wire are fixed. Of course, a structure for limiting the routing of the binding wire can be provided on the first carrier, or a structure for limiting the binding wire can be provided on the support leg, so that the binding wire can connect the handle seat to the first carrier more stably.

[0067] Based on the structural characteristics of the above device, during the operation, the artificial chordae 60 are first connected to the papillary muscles corresponding to the broken native chordae, and multiple surgical threads are used to pass through the valve ring, and then through the shaping ring. The shaping ring is pushed to the valve ring position through the handle. At this time, the artificial chordae pass through the middle of the shaping ring. After adjusting the implantation position of the shaping ring, use a scalpel to cut the binding wire connecting the handle seat and the ring holder, take out the handle and the handle seat, and then tie the surgical thread to complete the implantation of the shaping ring.

[0068] Referring to Figure 3, since the handle seat is removed from the ring holder at this time, the inner space of the ring holder is completely exposed, so that the state of the leaflet can be clearly and completely observed. At this time, one end of the artificial chord connected to the papillary muscle is passed through the rupture position of the native chord on the leaflet and connected to the leaflet 70. Then, the artificial chord is connected to the rope loop and the leaflet is tightened by the rope loop. The artificial chord itself is knotted and fixed to the leaflet. At this time, the implantation operation of the artificial chord is completed; then the connecting unit on the ring holder is pulled out, and the rope loop is pulled out of the ring holder, and then the rope loop is pulled out from the knot of the artificial chord; finally, the binding line between the ring holder and the forming ring is cut, and the ring holder is taken out, thereby completing the entire implantation operation.

[0069] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0070] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of the present invention does not necessarily imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical" and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0071] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A device for heart valve repair, which is used as a carrier of a shaping ring when a shaping ring is implanted on a valve ring, characterized in that: It comprises a first carrier matching the shape of the forming ring, and the first carrier is provided with a cable sleeve for connecting the artificial tendon; The cable sleeve is respectively connected to a connecting unit at both ends, and the connecting structure of the cable sleeve and the connecting unit cooperates with the limiting structure provided on the first carrier, so that the cable sleeve and the connecting unit can be firmly connected to the first carrier; When the connection unit is pulled out from the connection with the cable sleeve, the connection between the cable sleeve and the first carrier can be released, so that the cable sleeve can be pulled out from the connection with the artificial tendon.

2. The device for heart valve repair according to claim 1, characterized in that: The limiting structure is a plurality of holes arranged on the first carrier, one end of the flexible wire is inserted into the hole, and after passing through the hole, it crosses with the connection unit and is wound around the connection unit, and then is inserted into the hole again and passed through the hole, and the flexible wire is connected to the connection unit at the position of the hole through the threading method; By adopting this threading method, the flexible wire is connected to the connection unit at the corresponding position of each hole along the routing direction, and a rope sleeve is formed between two adjacent holes and is respectively wound and connected to the connection unit at both ends.

3. The device for heart valve repair according to claim 1, characterized in that: The size of the structure formed by the winding connection between the cable sleeve and the connecting unit is larger than the size of the hole, so that the cable sleeve can be clamped at the hole opening position at one end of the hole in the winding connection structure with the connecting unit.

4. The device for heart valve repair according to claim 1, characterized in that: One end of the hole is connected to one end surface of the first carrier for placing the forming ring, and the other end is connected to the other end surface opposite to the first carrier.

5. The device for heart valve repair according to claim 4, characterized in that: The connection unit is arranged on one end surface of the first carrier for placing the forming ring, and one end of the connection unit extends out to the other end surface opposite to the first carrier.

6. The device for heart valve repair according to claim 1, characterized in that: The first carrier includes a horizontal portion and a vertical portion arranged along the inner side of the horizontal portion, a space for placing a forming ring is formed between the horizontal portion and the vertical portion, and the connecting unit is arranged on one side of the first carrier where the forming ring is placed and is located at the transition connection position between the horizontal portion and the vertical portion.

7. The device for heart valve repair according to any one of claims 1 to 6, characterized in that: The connecting unit is a flexible member.

8. A device for repairing a heart valve, which can be implanted on a valve ring for repairing the valve ring, characterized in that: It comprises a second carrier matching the shape of the valve ring, and the second carrier is provided with a cable sleeve for connecting the artificial tendon cord; The cable sleeve is respectively connected to a connecting unit at both ends, and the connecting structure of the cable sleeve and the connecting unit cooperates with the limiting structure provided on the second carrier, so that the cable sleeve and the connecting unit can be firmly connected to the second carrier; When the connection unit is pulled out from the connection with the cable sleeve, the connection between the cable sleeve and the second carrier can be released, so that the cable sleeve can be pulled out from the connection with the artificial tendon.

9. A system for heart valve repair, characterized in that: The invention comprises a handle seat and the device according to any one of claims 1 to 7, wherein the handle seat is connected to a first carrier of the device via a binding wire.

10. The system for heart valve repair according to claim 9, characterized in that: The first carrier is provided with connection structures at multiple positions along its circumference, and a binding wire is used to cooperate with each connection structure along the routing direction to fix the handle seat on the first carrier.

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