Valve annuloplasty ring delivery device and annuloplasty system

Abstract

The present invention discloses a valve annuloplasty ring delivery device and an annuloplasty system. The valve annuloplasty ring delivery device includes a housing member and a lead wire assembly. The housing member is axially provided with a receiving cavity for receiving a valve annuloplasty ring, and through grooves communicating with a receiving groove are axially provided on opposite sides of the housing member. The lead wire assembly includes a wire splitting member and at least one catheter with both ends communicating. The wire splitting member includes a main cavity axially penetrating therethrough and a plurality of wire splitting holes radially communicating with the main cavity. The housing member is detachably received in the main cavity, and each catheter movably penetrates through the wire splitting holes. In the valve annuloplasty ring delivery device provided by the embodiments of the present invention, the catheter penetrates through the wire splitting holes of the wire splitting member and simultaneously passes through the valve annuloplasty ring in the receiving cavity through the through groove. The suture that has been sewn into the native annulus is passed through the catheter, and after the catheter is withdrawn, a plurality of sutures on the native annulus can be coupled to the valve annuloplasty ring, with simple operation, convenience and speed. At the same time, it can ensure that the suture is arranged at a suitable position on the valve annuloplasty ring.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a valve annuloplasty ring delivery device and an annuloplasty system. Background Art

[0002] Mitral insufficiency is one of the most common heart valve diseases nowadays. The main causes are rheumatic heart disease, mitral mucoid degeneration, cardiac ischemic disease, myocardial disease, etc., which lead to lesions in the annulus, leaflets, chordae tendineae, and papillary muscles in the mitral valve structure, resulting in incomplete closure of the mitral valve leaflets.

[0003] Mitral annuloplasty, also known as mitral valve annuloplasty, is one of the basic surgical procedures for mitral valve repair. By reducing the mitral annulus and strengthening the coaptation of the mitral valve, it can effectively reduce mitral regurgitation while maintaining the physiological integrity of the mitral valve structure. For example, an artificial annuloplasty ring is implanted on the annulus, and then interrupted U-shaped sutures are made along the leaflet attachment part with non-invasive sutures, and then the suture is tightened to adjust the size of the annulus to achieve the effect of annulus reduction.

[0004] The prior art discloses devices for treating mitral insufficiency by using interventional mitral valve annuloplasty. It uses interventional devices to apply multiple sutures on the mitral annulus, then couples the multiple sutures to a valve annuloplasty ring, and then slides the valve annuloplasty ring along the suture through a channel to reach the mitral valve. Currently, the sutures can be coupled to the valve annuloplasty ring one by one through a lead wire device with an annular part, but the operation is cumbersome and inconvenient, and the doctor can only determine the position where each suture is coupled to the valve annuloplasty ring based on experience, and cannot ensure that the position of the suture is appropriate. Summary of the Invention

[0005] In order to solve the technical problem of conveniently and quickly coupling multiple sutures to a valve annuloplasty ring, the present invention provides a valve annuloplasty ring delivery device and an annuloplasty system.

[0006] In a first aspect, the present invention provides a valve annuloplasty ring delivery device, comprising:

[0007] A housing member, the housing member is provided with a housing cavity along the axial direction, and through grooves are provided along the axial direction on opposite sides of the housing member, the through grooves communicate with the housing cavity, and the housing cavity is used for housing a valve annuloplasty ring; and

[0008] A lead wire assembly, the lead wire assembly includes a wire splitting member and at least one catheter with both ends communicating, the wire splitting member includes a main cavity penetrating along the axial direction and a plurality of wire splitting holes radially communicating with the main cavity, the housing member is detachably housed in the main cavity, and each catheter movably penetrates through the wire splitting holes.

[0009] In a second aspect, the present invention provides an annuloplasty system, comprising an annuloplasty ring and the above-mentioned annuloplasty ring delivery device, wherein the annuloplasty ring is accommodated in the accommodation cavity of the accommodating member.

[0010] Compared with the prior art, the above technical solutions provided by the embodiments of the present invention have at least the following advantages:

[0011] For the annuloplasty ring delivery device and the annuloplasty system provided by the embodiments of the present invention, the annuloplasty ring is accommodated in the accommodation cavity of the accommodating member, and the accommodating member is further accommodated in the main cavity of the wire dividing member of the lead assembly. Then, a catheter is passed through the wire dividing holes of the wire dividing member, and the catheter simultaneously passes through the annuloplasty ring in the accommodation cavity through the through groove. When the operator passes the suture that has been sewn into the native annulus through the catheter and withdraws the catheter, the suture can be passed through the annuloplasty ring, so that multiple sutures on the native annulus can be coupled to the annuloplasty ring. The operation is simple, convenient and fast. At the same time, since the suture is passed through the annuloplasty ring through the wire dividing holes of the wire dividing member, it can ensure that the suture is passed through the appropriate position on the annuloplasty ring and the distance between adjacent sutures is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present invention and used together with the specification to explain the principles of the present invention.

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] In the drawings:

[0015] Figure 1 is a schematic structural view of the annuloplasty ring delivery device provided by the embodiment of the present invention;

[0016] Figure 2 is another schematic structural view of the annuloplasty ring delivery device provided by the embodiment of the present invention;

[0017] Figure 3 is a schematic structural view of the accommodating member and the sheath provided by the embodiment of the present invention;

[0018] Figures 4 to 7 is a schematic structural view of the lead assembly provided by the embodiment of the present invention;

[0019] Figure 8 is a schematic structural view of the annuloplasty ring in a natural state provided by the embodiment of the present invention;

[0020] Figure 9 It is a schematic structural diagram of the valve annuloplasty ring provided by an embodiment of the present invention when placed in the accommodating member;

[0021] Figures 10 to 13 It is a schematic structural diagram of the accommodating member provided by an embodiment of the present invention;

[0022] Figure 14 It is a schematic structural diagram of the valve annuloplasty ring delivery device provided by an embodiment of the present invention;

[0023] Figure 15 It is a cross-sectional view of the accommodating member and the pushing member provided by an embodiment of the present invention;

[0024] Figures 16 to 19 It is an operation schematic diagram of the valve annuloplasty ring delivery device provided by an embodiment of the present invention;

[0025] Figure 20 It is a schematic diagram of the native mitral valve annulus provided by an embodiment of the present invention;

[0026] Figure 21 It is a schematic diagram of the locking of the interventional ligation instrument provided by an embodiment of the present invention. Detailed Embodiment

[0027] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings and are constructed and operated in a specific orientation, and are only for the convenience of describing the technical solution, rather than indicating that the indicated devices or elements must have a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0028] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "connection", "linkage", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When a component is referred to as "on" or "under" another component, the component can be "directly" or "indirectly" located above the other component, or there may also be one or more intermediate components. Terms such as "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. However, those skilled in the art should clearly understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, the detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present invention.

[0030] In the description of the present invention, it should be noted that in the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; the axial direction refers to the direction parallel to the line connecting the centers of the distal end and the proximal end of the medical device. The above definitions are only for the convenience of expression and should not be construed as a limitation to the present invention.

[0031] Reference Figures 1 to 21 , according to an embodiment of the present invention, an annuloplasty system includes an annuloplasty ring 3 and an annuloplasty ring delivery device 1. The annuloplasty ring delivery device 1 is used to couple a plurality of sutures 2 that have been sewn onto the native cardiac annulus 4 to the annuloplasty ring 3, and deliver the annuloplasty ring 3 into the atrium along the plurality of sutures 2 through a minimally invasive interventional path. The annuloplasty ring delivery device 1 can be used to deliver the annuloplasty ring 3 in mitral annuloplasty and tricuspid annuloplasty. With minimally invasive intervention, the annuloplasty ring 3 can be implanted without cardiac arrest. The annuloplasty ring delivery device 1 includes a housing member 10, a lead assembly 20, a pusher member 30, a control assembly 40, and a sheath 50.

[0032] Reference Figures 1 to 11The receiving part 10 is provided with a receiving cavity 11 in the axial direction, and two opposite sides of the receiving part 10 are provided with through grooves 12 in the axial direction, and the through grooves 12 are connected to the receiving cavity 11, and the receiving cavity 11 is used to receive the annuloplasty ring 3. The lead assembly 20 includes a line dividing part 21 and at least one catheter 22 connected at both ends. The line dividing part 21 includes a main cavity 214 that passes through in the axial direction and a plurality of line dividing holes 213 that are radially connected to the main cavity 214. The receiving part 10 is detachably received in the main cavity 214, and the catheter 22 is movable through the line dividing hole 213.

[0033] In the above-mentioned annuloplasty ring delivery device 1, the annuloplasty ring 3 is accommodated in the accommodating cavity 11 of the accommodating member 10, and the accommodating member 10 is further accommodated in the main cavity 214 of the dividing member 21 of the lead assembly 20, and then the catheter 22 is passed through the dividing hole 213 of the dividing member 21, and the catheter 22 simultaneously passes through the annuloplasty ring 3 in the accommodating cavity 11 through the through groove 12. When the operator passes the suture 2 that has been sewn into the native valve ring 4 through the catheter 22, the suture 2 can be inserted into the annuloplasty ring 3 after the catheter 22 is withdrawn, so that the multiple sutures 2 on the native valve ring 4 are coupled to the annuloplasty ring 3, and the operation is simple, convenient and fast. At the same time, since the suture 2 is inserted into the annuloplasty ring 3 through the dividing hole 213 of the dividing member 21, it can be ensured that the suture 2 is inserted into the appropriate position on the annuloplasty ring 3 and the spacing between adjacent sutures is uniform.

[0034] It can be understood that the lead assembly 20 can include one catheter 22 or multiple catheters 22. The catheter 22 can be movably passed through the dividing hole 213 of the dividing member 21. Since the accommodating member 10 with the annuloplasty ring 3 built therein is accommodated in the main cavity 214 of the dividing member 21, the catheter 22 can be passed through one end of the dividing hole 213, and then passed through the through groove 12 on one side of the accommodating member 10 into the accommodating cavity 11, and passed through the annuloplasty ring 3 located in the accommodating cavity 11, and then passed through the through groove 12 on the other side of the accommodating member 10, and finally passed through the other end of the dividing hole 213. The catheter 22 passes through the dividing hole 213 and passes through the annuloplasty ring 3 in the accommodating cavity 11 through the through groove 12. Therefore, the operator passes the suture 2 that has been sewn into the native valve ring 4 through the catheter 22, and then withdraws the catheter 22 to retain the suture 2 on the annuloplasty ring 3 in the accommodating cavity 11. Using the detachable catheter 22 to guide the suture thread 2 to penetrate the annuloplasty ring 3 is simple and convenient to operate, and can also shorten the operation time and improve the operation efficiency.

[0035] After the annuloplasty ring 3 is placed in the main cavity 214 of the wire dividing member 21, the suture 2 is passed through the annuloplasty ring 3 via the wire dividing holes 213, and the position of the suture 2 on the annuloplasty ring 3 is determined by the relative position of the wire dividing holes 213 and the annuloplasty ring 3. Since the positions of the multiple wire dividing holes 213 on the wire dividing member 21 are fixed, it can be ensured that the suture 2 is passed through the annuloplasty ring 3 at appropriate positions and the distance between adjacent sutures 2 is uniform, thereby ensuring that the annuloplasty ring 3 contracts uniformly after being stressed.

[0036] Reference Figure 12 and Figure 13 , the annuloplasty ring 3 is made of a shape memory material. When the annuloplasty ring 3 is in its natural state, it is in a C shape, that is, the annuloplasty ring 3 has a natural state and a delivery state. When in the natural state, its two ends are open and in a C shape; when placed in the delivery device, it is in a straight delivery state. The annuloplasty ring 3 has superelasticity, and specifically, materials such as silicone and nitinol that can be implanted and have appropriate elastic properties can be selected. As Figure 13 shown, due to its superelastic properties, the annuloplasty ring 3 can be placed in the accommodating member 10 in a straight state. Placing the annuloplasty ring 3 in a straight state in the annuloplasty ring delivery device 1 can minimize the outer dimensions of the annuloplasty ring delivery device 1, which is beneficial to reducing the wound, and further can reduce the risk of surgery caused by an overly large wound. Of course, within an acceptable range of risk, the annuloplasty ring 3 can also be set to other shapes and placed in the annuloplasty ring delivery device 1, such as a spiral shape. As Figure 12 shown, when the annuloplasty ring delivery device 1 reaches the atrium, the annuloplasty ring 3 can be pushed out from the accommodating member 10 to restore the annuloplasty ring 3 to its natural state, in a C shape. The shape and size of the annuloplasty ring 3 in its natural state are the same as or close to those of the native valve annulus 4. After the suture 2 is passed through the native valve annulus 4 and the annuloplasty ring 3, by tying a knot and tightening the ring, the abnormal native valve annulus 4 of the patient can be restored to a normal state.

[0037] Reference Figures 4 to 7 , the lead assembly 20 includes a wire dividing member 21, a catheter 22, and a lead member 23. The wire dividing member 21 includes a first cover body 211 and a second cover body 212 that can be detachably joined. After the first cover body 211 and the second cover body 212 are closed, a main cavity 214 that penetrates axially and multiple wire dividing holes 213 that communicate with the main cavity 214 radially are formed. In this way, the detachable first cover body 211 and second cover body 212 facilitate the accommodating member 10 to be placed in the main cavity 214 of the wire dividing member 21.

[0038] Reference Figure 4, the wire dividing member 21 further includes a locking knob 215, and locking holes 216 are respectively provided at positions corresponding to the first cover body 211 and the second cover body 212. After the accommodating member 10 is accommodated in the main cavity 214 of the wire dividing member 21, the locking knob 215 can sequentially pass through the locking holes 216 in the first cover body 211 and the second cover body 212 to lock the first cover body 211 and the second cover body 212, thereby fixing the accommodating member 10 in the main cavity 214 of the wire dividing member 21. In a specific embodiment, the first cover body 211 and the second cover body 212 are respectively provided with two locking holes 216. Taking the first cover body 211 as an example, one of the two locking holes 216 is provided at the proximal end of the first cover body 211, and the other locking hole 216 is provided at the distal end of the first cover body 211, and the two locking holes 216 are respectively provided on both axial sides of the main cavity 214. This can improve the stability of the covering of the first cover body 211 and the second cover body 212, and further improve the stability of the wire dividing member 21, which is convenient for operation. Of course, in another specific embodiment, the first cover body 211 and the second cover body 212 can fix the accommodating member 10 in the main cavity 214 of the wire dividing member 21 by means of snap-fitting.

[0039] Specifically, the number of wire dividing holes 213 is multiple, and they are arranged at intervals along the axial direction of the wire dividing member 21. In a specific embodiment, the number of wire dividing holes 213 is 16, and they are evenly distributed at intervals along the axial direction of the wire dividing member 21. In this way, the 16 suture lines 2 that have been sewn into the native annulus 4 can be evenly coupled to the valve annuloplasty ring 3 through the 16 wire dividing holes respectively, ensuring that the suture lines 2 are arranged at appropriate positions on the valve annuloplasty ring 3. Of course, the lead assembly 20 can be configured with wire dividing members 21 having different numbers of wire dividing holes 213, and the wire dividing member 21 with the same number of wire dividing holes 213 can be selected according to the number of suture lines 2 sewn into the native annulus 4.

[0040] When the valve annuloplasty ring 3 is made of a soft shape memory material such as silicone, the valve annuloplasty ring 3 may not be provided with threading holes. In a specific embodiment, first, the valve annuloplasty ring 3 is accommodated in the accommodating cavity 11, then the accommodating member 10 is covered and fixed by the first cover body 211 and the second cover body 212, and then the catheter 22 is passed through the wire dividing holes 213. When the catheter 22 passes through the wire dividing holes 213, it can penetrate the valve annuloplasty ring 3 to form a threading hole cavity on the valve annuloplasty ring 3. At this time, the suture line 2 is threaded through the catheter 22, and then the catheter 22 is withdrawn along the free end of the suture line 2, and the suture line 2 can be coupled to the valve annuloplasty ring 3.

[0041] When the valve annulus 3 is made of a shape memory material such as nitinol, the valve annulus 3 can be provided with a plurality of wire threading holes corresponding to the plurality of wire dividing holes 213. When the accommodating member 10 is accommodated in the main cavity 214 of the wire dividing member 21, the wire threading holes of the valve annulus 3 are in one-to-one communication with the wire dividing holes 213. In this case, first, the valve annulus 3 is accommodated in the accommodating cavity 11, then a plurality of catheters 22 are respectively passed through the plurality of wire threading holes of the valve annulus 3, and then the accommodating member 10 and the plurality of catheters 22 are covered and fixed by the first cover body 211 and the second cover body 212. At this time, the suture 2 is passed through the catheter 22, and then the catheter 22 is withdrawn along the free end of the suture 2, and the suture 2 can be coupled to the valve annulus 3.

[0042] The wire dividing member 21 can be made of a polymer material or a metal material. For facilitating the observation of the internal situation of the wire dividing member 21, it is preferably a transparent polymer material, such as polymer materials like polymethyl methacrylate (abbreviated as PMMA), polycarbonate (abbreviated as PC), etc. The catheter 22 can be made of a polymer material with certain support properties, such as polymer materials like poly-ether-ether-ketone (abbreviated as PEEK), Polyimide (abbreviated as PI), etc.

[0043] Reference Figure 5 Referring to

[0044] The annular portion 232 can be a metal ring, specifically made of an elastic metal wire, preferably a nitinol wire with superelastic properties. The rod-shaped portion 231 can be a straight rod, specifically made of 304 stainless steel or nitinol, etc.

[0045] Reference Figures 8 to 11, the accommodating member 10 includes an accommodating cavity 11 and a through groove 12. The distal end of the accommodating member 10 is provided with an opening, and the opening connects the accommodating cavity 11 and the through groove 12. In this way, after coupling a plurality of suture lines 2 to the valvuloplasty ring 3, the valvuloplasty ring 3 can be pushed out from the opening of the accommodating member 10, and the suture lines 2 can also be pushed out from the opening along the through groove 12 along with the valvuloplasty ring 3. The accommodating member 10 is a cylindrical structure, its distal end is provided with an opening 10a, and its proximal end is provided with a connecting cavity for connecting the sheath 50. Of course, the accommodating member 10 can also be a columnar structure of other shapes. The accommodating member 10 can be made of a metal material or a polymer material with relatively strong rigidity, such as 304 stainless steel, polyether ether ketone, etc.

[0046] Reference Figure 14 and Figure 15 , the valvuloplasty ring delivery device 1 further includes a pusher 30, and the distal end of the pusher 30 is movably accommodated in the accommodating cavity 11. In this way, after coupling a plurality of suture lines 2 to the valvuloplasty ring 3, the valvuloplasty ring 3 can be pushed out of the accommodating cavity 11 through the pusher 30.

[0047] Specifically, the pusher 30 includes a push rod 31 and a push block 32 fixedly connected to the distal end of the push rod 31. The push rod 31 and the push block 32 are fixedly connected, and the fixed connection methods include connection methods such as welding, bonding or buckling. The push block 32 is movably accommodated in the accommodating cavity 11, and the cross-sectional area of the push block 32 in the radial direction is larger than the cross-sectional area of the push rod 31 in the radial direction. In this way, the contact area between the push block 32 and the valvuloplasty ring 3 can be increased, thereby improving the stability of pushing the valvuloplasty ring 3 out of the accommodating cavity 11. Further, the push block 32 and the push rod 31 can be an integrally formed structure, so that the valvuloplasty ring 3 can be pushed out of the accommodating cavity 11 more stably. The push rod 31 and the push block 32 can be made of a metal material or a polymer material with relatively strong rigidity, such as 304 stainless steel, or polyether ether ketone.

[0048] Reference Figure 14 and Figure 15 , the valvuloplasty ring delivery device 1 further includes a sheath 50, and the sheath 50 is a tubular structure with an inner cavity. The sheath 50 is used to accommodate the pusher 30. The sheath 50 is fixedly connected to the proximal end of the accommodating member 10. Specifically, the sheath 50 is fixedly connected to the connecting cavity at the proximal end of the accommodating member 10, and the fixed connection method is welding, bonding or buckling, etc. The inner cavity of the sheath 50 communicates with the accommodating cavity 11, and the pusher 30 is movably accommodated in the inner cavity of the sheath 50 and the accommodating cavity 11. In this way, it is convenient to push the pusher 30 more smoothly, so that the pusher 30 pushes the valvuloplasty ring 3 away from the accommodating member 10. The sheath 50 can be made of a metal material or a polymer material with relatively strong rigidity, such as 304 stainless steel, or polyether ether ketone.

[0049] Continue to refer to Figure 14, the valve annuloplasty ring delivery device 1 further includes a control assembly 40, and the control assembly 40 includes a handle 42 and an operating member 41 disposed on the handle 42. The handle 42 is fixedly connected to the proximal end of the sheath 50, and the operating member 41 is connected to the proximal end of the pusher 30 and is used to control the axial movement of the pusher 30. In this way, the pusher 30 can be driven to move axially by operating the operating member 41, so as to push the valve annuloplasty ring 3 out of the accommodating member 10.

[0050] Specifically, the operating member 41 includes a knob and a slider. The slider is located in the inner cavity of the handle 42, and the knob is coaxially arranged with the handle 42. The slider is fixedly connected to the proximal end of the pusher 30, that is, fixedly connected to the proximal end of the push rod 31. External threads are provided on the circumferential side of the slider, and internal threads paired with the external threads are provided on the knob. By rotating the knob, the slider is driven to move axially, so as to control the axial movement of the pusher 30 by rotating the knob. Of course, the operating member 41 may also only include a knob, and the knob is directly threadedly connected to the push rod 31, and the push rod 31 is driven to move axially by rotating the knob. The entire control assembly 40 can be made of a polymer material with high strength, such as acrylonitrile-butadiene-styrene plastic (Acrylonitrile Butadiene Styrene plastic, abbreviated as ABS), polypropylene (Polypropylene, abbreviated as PP), etc.

[0051] Reference Figures 16 to 19 , the operation process of the valve annuloplasty ring delivery device 1 provided by the embodiment of the present invention is specifically as follows.

[0052] First, place the valve annuloplasty ring 3 in the accommodating member 10 and fix the accommodating member in the main cavity 214 of the wire dividing member 21. The catheter 22 passes through the wire dividing holes 213 of the wire dividing member 21 and is inserted through the valve annuloplasty ring 3.

[0053] Then, pass the free end of the suture 2 that has been sutured to the native valve annulus 4 through the annular portion 232 of the lead wire member 23, and pass the free end of the suture 2 through the catheter 22 through the lead wire member 23, so as to complete the threading of the suture 2 on the valve annuloplasty ring 3.

[0054] Specifically, the threading of each suture 2 can be completed in sequence according to the numbers marked on the lead wire assembly 20. Reference Figure 20 , the position of the first wire dividing hole 213 at the distal end of the lead wire assembly 20 corresponds to the position of the right fibrous triangle in the native valve annulus 4. The order of the sutures 2 on the valve annuloplasty ring 3 is the right fibrous triangle, P3, P2, P1, and the left fibrous triangle. In this way, the corresponding positions of the valve annuloplasty ring 3 and the native valve annulus 4 can be made to correspond one by one to drive the tissue of the native valve annulus 4 to play a role in reducing the ring. Figure 20Among them, AV represents the aortic valve, CS represents the coronary sinus, ALC represents the left fibrous trigone, PMC represents the right fibrous trigone, and A1 / A2 / A3, P1 / P2 / P3 respectively represent the positions on the annuloplasty ring 3. The native annulus 4 in the embodiment of the present invention is the native mitral annulus.

[0055] Finally, after multiple sutures 2 are all passed through the annuloplasty ring, the catheter 22 is withdrawn, the first cover body 211 and the second cover body 212 of the wire splitting member are unlocked, and the first cover body 211 and the second cover body 212 are separated and withdrawn.

[0056] Reference Figure 16 , as shown in the state after the lead assembly 20 is withdrawn, each suture 2 passes through the annuloplasty ring 3 inside the annuloplasty ring delivery device 1, and the other end of the suture 2 is sutured to the native annulus 4 of the patient.

[0057] Reference Figure 17 And Figure 18 , the distal end of the annuloplasty ring delivery device 1 advances along the already passed sutures 2, through the minimally invasive opening of the heart, into the target position in the heart such as the left atrium. After the annuloplasty ring delivery device 1 enters the target position, by driving the operating member 41, the annuloplasty ring 3 is pushed out. At this time, the annuloplasty ring 3 and the sutures 2 will be pushed out from the annuloplasty ring delivery device 1 simultaneously.

[0058] Reference Figure 19 , the annuloplasty ring 3 is completely pushed out of the accommodating cavity 11 of the annuloplasty ring delivery device 1 and released. The annuloplasty ring 3 returns to its natural state due to its shape memory function and aligns with the outer shape structure of the native annulus 4, that is, the positions of P1, P2, and P3 of the annuloplasty ring 3 are aligned with those of the native annulus 4.

[0059] Reference Figure 20 And Figure 21 , through the interventional locking instrument 5, the annuloplasty ring 3 is attached to the native annulus 4 and the adjacent sutures 2 are locked in sequence pairwise, thereby completing the implantation of the annuloplasty ring 3 and achieving the effect of reducing the annulus. Since the interventional locking instrument 5 is relatively common in the field of interventional medicine, it will not be elaborated here.

[0060] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, all of which belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention should fall within the scope covered by the claims of the present invention.

Claims

1. A valve annuloplasty ring delivery device, characterized in that, Comprising: A housing member, the housing member is provided with a housing cavity along the axial direction, through grooves are provided along the axial direction on two opposite sides of the housing member, the through grooves communicate with the housing cavity, and the housing cavity is used for housing a valvuloplasty ring; and A lead assembly, the lead assembly includes a wire splitting member and at least one catheter with both ends communicating, the wire splitting member includes a main cavity penetrating along the axial direction and a plurality of wire splitting holes radially communicating with the main cavity, the housing member is detachably housed in the main cavity, and each catheter movably penetrates through the wire splitting holes; An opening is provided at the distal end of the housing member, and the opening communicates with the housing cavity and the through groove.

2. The valvuloplasty ring delivery device according to claim 1, characterized in that, The wire splitting member includes a first cover body and a second cover body that are detachably joined.

3. The valvuloplasty ring delivery device according to claim 1, characterized in that, The valvuloplasty ring delivery device further includes a pushing member, and the distal end of the pushing member is movably housed in the housing cavity.

4. The valve annuloplasty ring delivery device according to claim 3, wherein The pushing member includes a pushing rod and a pushing block fixedly connected to the distal end of the pushing rod, and the cross-sectional area of the pushing block along the radial direction is larger than the cross-sectional area of the pushing rod along the radial direction.

5. The valvuloplasty ring delivery device according to claim 4, wherein The valvuloplasty ring delivery device further includes a sheath tube, the sheath tube is fixedly connected to the proximal end of the housing member, the inner cavity of the sheath tube communicates with the housing cavity, and the pushing member is movably housed in the inner cavity of the sheath tube and the housing cavity.

6. The valvuloplasty ring delivery device according to claim 5, wherein The valvuloplasty ring delivery device further includes a control assembly, the control assembly includes a handle and an operating member provided on the handle, the handle is fixedly connected to the proximal end of the sheath tube, and the operating member connects to the proximal end of the pushing member and is used to control the axial movement of the pushing member.

7. The valvuloplasty ring delivery device according to any one of claims 1-6, characterized in that, The lead assembly further includes a lead member, the lead member movably penetrates through the catheter, and the lead member includes a rod-shaped portion and an annular portion provided at one end of the rod-shaped portion.

8. An annuloplasty system, characterized in that, Comprising a valvuloplasty ring and the valvuloplasty ring delivery device according to any one of claims 1 to 7, and the valvuloplasty ring is housed in the housing cavity of the housing member.

9. The annuloplasty system according to claim 8, characterized in that, The valvuloplasty ring is made of a shape memory material, and the valvuloplasty ring is in a C shape when in a natural state.

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