Valve anchoring mechanism conveying device, conveying system and transcatheter valve replacement system

Abstract

The utility model relates to a valve anchoring mechanism conveying device, a conveying system and a transcatheter valve replacement system, the valve anchoring mechanism conveying device adopts a single bending control structure, the release success rate of a valve anchoring mechanism can be improved, the operation process is simplified, in addition, the far end of the conveying mechanism is provided with a loading part and a guiding part, and the conveying device is convenient to use. And the catheter part is provided with three control tubes which are arranged in a sleeving manner and can move relative to the axial direction, so that the conveying device can smoothly guide and fix the valve anchoring mechanism, and it is ensured that the valve anchoring mechanism is released at the correct position. The transcatheter valve replacement system comprises an artificial valve, a valve anchoring mechanism, a fishing ring and respective conveying devices, adopts a femoral vein conveying mode and has smaller Profi; the combination mode of the artificial valve, the valve anchoring mechanism and the fishing ring can effectively reduce the occurrence probability of left ventricular outflow tract obstruction, and the system of the same specification can adapt to anatomical structures of different patients.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices for cardiac surgery, in particular to a delivery device for a valve anchoring mechanism, a delivery system and a transcatheter valve replacement system. Background Art

[0002] Cardiac valve diseases include lesions of the mitral valve, tricuspid valve, aortic valve and pulmonary valve. These lesions affect normal blood flow, resulting in abnormal cardiac function, causing pain to patients and even endangering their lives. At present, one of the treatment methods for valve regurgitation is transcatheter valve replacement. Transcatheter mitral valve replacement is a new minimally invasive treatment method. An artificial valve is delivered to the position of the native mitral valve through a valve delivery system to replace the function of the native valve.

[0003] The existing problems are as follows:

[0004] (1) After the artificial valve is implanted, the replaced mitral valve may block the blood flow from the left ventricle into the aorta, resulting in left ventricular outflow tract obstruction;

[0005] (2) The existing artificial mitral valve has a relatively large volume, resulting in an oversized profile of the delivery system;

[0006] (3) There are differences in the anatomical structures of different patients, and different specifications of valves need to be used to adapt. Summary of the Utility Model

[0007] The utility model discloses a delivery device for a valve anchoring mechanism, a delivery system and a transcatheter valve replacement system, aiming to solve the technical problems existing in the prior art.

[0008] The utility model adopts the following technical solutions:

[0009] In the first aspect, an embodiment of the utility model provides a delivery device for a valve anchoring mechanism, including a control part, a catheter part, a loading part and a guiding part;

[0010] The catheter part sequentially includes a first control tube, a second control tube and a third control tube from outside to inside. The guiding part is arranged at the outermost distal end of the third control tube. The loading part is arranged adjacent to the guiding part and is used for connecting the valve anchoring mechanism. The control part includes a first control component, a second control component and a third control component;

[0011] The first control component is used to control the axial movement of the first control tube;

[0012] The second control component includes a second rotating member, a second linkage member, a fixing member, a bending adjustment member and a traction wire. The second rotating member is in meshing transmission with the second linkage member, and the second linkage member can rotate circumferentially. The fixing member is fixedly connected to the proximal end of the second control tube. The bending adjustment member is sleeved on the fixing member and is in threaded transmission with the second linkage member. The proximal end of the traction wire is connected to the bending adjustment member, and the distal end of the traction wire is connected to the distal end of the second control tube. The second linkage member can drive the bending adjustment member to move axially and drive the traction wire to control the bending of the distal end of the second control tube.

[0013] The third control component is used to drive the axial movement of the third control tube.

[0014] As a preferred technical solution, the control part further includes a handle housing. The fixing member is fixedly connected to the handle housing, and the second linkage member is connected to the inside of the handle housing through a bearing.

[0015] As a preferred technical solution, the second rotating member is further fixedly connected with a second control handwheel, and the two are coaxially arranged. The second control handwheel is arranged on the outside of the handle housing.

[0016] The rotation axis of the second rotating member is perpendicular to the rotation axis of the second linkage member, and the second linkage member is coaxially arranged with the second control tube.

[0017] As a preferred technical solution, the first control component is arranged at the distal end of the second control component. The first control component includes a first rotating member, a first linkage member and a first actuating member. The first rotating member is in gear meshing transmission with the first linkage member. The first linkage member is rotatably arranged inside the handle housing through a bearing. The first actuating member is fixedly connected to the proximal end of the first control tube. The first actuating member is in threaded transmission with the first linkage member, and the first linkage member can drive the axial movement of the first control tube.

[0018] As a preferred technical solution, the first rotating member is further fixedly connected with a first control handwheel, and the two are coaxially arranged. The first control handwheel is arranged on the outside of the handle housing.

[0019] The rotation axis of the first rotating member is perpendicular to the rotation axis of the first linkage member, and the first linkage member is coaxially arranged with the first control tube.

[0020] As a preferred technical solution, the third control component is arranged at the proximal end of the second control component. The third control component includes a third rotating member. The third rotating member is fixedly connected to the third control tube, and the third rotating member can drive the axial movement of the third control tube.

[0021] As a preferred technical solution, the third rotating member is coaxially arranged with the third control tube, and the third rotating member is threadedly connected to the proximal end of the handle housing.

[0022] As a preferred technical solution, the guiding part is conical, and the large-diameter end of the guiding part can be detachably connected to the distal end of the first control tube.

[0023] As a preferred technical solution, the loading part is in a disc shape and sleeved on the outer side of the distal end of the third control tube. At least one connecting groove is provided in the circumferential direction of the loading part. The connecting groove is used to connect with the connecting piece of the compressed valve anchoring mechanism and axially limit it.

[0024] In a second aspect, an embodiment of the present invention provides a valve anchoring mechanism delivery system, including the valve anchoring mechanism delivery device as described in any one of the above, and further including a valve anchoring mechanism.

[0025] In a third aspect, an embodiment of the present invention provides a transcatheter valve replacement system, including the valve anchoring mechanism delivery system as described above, and further including a capture ring delivery system and an artificial valve delivery system. The capture ring delivery system includes a capture ring delivery device and a capture ring, and the artificial valve delivery system includes an artificial valve delivery device and an artificial valve.

[0026] One embodiment of the above-mentioned utility model has the following advantages or beneficial effects:

[0027] The present invention mainly provides a valve anchoring mechanism delivery device, a delivery system and a transcatheter valve replacement system. Among them, the valve anchoring mechanism delivery device adopts a structure of monotonic bending control, which can improve the release success rate of the valve anchoring mechanism and simplify the operation process. In addition, the distal end of the delivery mechanism has a loading part and a guiding part, and the catheter part has three control tubes that are sleeved and can move axially relative to each other, so that the delivery device can smoothly guide and fix the valve anchoring mechanism to ensure its release at the correct position.

[0028] An embodiment of the present invention further provides a transcatheter valve replacement system. The system includes an artificial valve, a valve anchoring mechanism, a capture ring and their respective delivery devices. The system adopts a trans-femoral vein delivery method and has a smaller Profile, avoiding thoracotomy, reducing the trauma and complications of the operation, and improving the postoperative healing effect; the combination method of the artificial valve, the valve anchoring mechanism and the capture ring can effectively reduce the occurrence probability of left ventricular outflow tract obstruction, and the same specification system can adapt to the anatomical structures of different patients, eliminating the need to customize different specifications of equipment for different patients, and simplifying the surgical preparation and operation. Description of the Drawings

[0029] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for the description of the embodiments. These drawings form a part of the present utility model. The schematic embodiments and their descriptions of the present utility model explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0030] Figure 1 Schematic structural diagram of a valve anchoring mechanism delivery device disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0031] Figure 2 Cross-sectional view of a control part disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0032] Figure 3 For Figure 2 Partial enlarged view at A in

[0033] Figure 4 Cross-sectional view of a valve anchoring mechanism delivery device disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0034] Figure 5 Exploded structural diagram of a valve anchoring mechanism delivery device disclosed in a preferred embodiment of Embodiment 1 of the present utility model;

[0035] Figure 6 Schematic structural diagram of a valve anchoring mechanism delivery device before loading the valve anchoring mechanism in a preferred embodiment of Embodiment 1 of the present utility model;

[0036] Figure 7 Schematic structural diagram of a valve anchoring mechanism delivery device during loading of the valve anchoring mechanism in a preferred embodiment of Embodiment 1 of the present utility model;

[0037] Figure 8 Schematic structural diagram of a valve anchoring mechanism delivery device after loading the valve anchoring mechanism in a preferred embodiment of Embodiment 1 of the present utility model;

[0038] Figure 9 Schematic structural diagram of a valve anchoring mechanism after release in a preferred embodiment of Embodiment 1 of the present utility model;

[0039] Figure 10 Schematic structural diagram of a fishing ring disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0040] Figure 11 Schematic structural diagram of a fishing ring delivery device disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0041] Figure 12 Schematic diagram of the structure of an artificial valve disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0042] Figure 13 Schematic diagram of the structure of a delivery device for an artificial valve disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0043] Figure 14 Schematic diagram of the capture ring during in - heart release, disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0044] Figure 15 Schematic diagram of the delivery device for the valve anchoring mechanism when it reaches the mitral valve, disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0045] Figure 16 Schematic diagram of the valve anchoring mechanism after release, disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0046] Figure 17 Schematic diagram of the delivery device for an artificial valve when it reaches the mitral valve, disclosed in a preferred embodiment of Embodiment 2 of the present utility model;

[0047] Figure 18 Schematic diagram of an artificial valve released into the valve anchoring mechanism, disclosed in a preferred embodiment of Embodiment 2 of the present utility model.

[0048] Explanation of reference numerals:

[0049] Delivery device for valve anchoring mechanism 10, guiding part 11, loading part 12, catheter part 13, first control tube 131, second control tube 132, third control tube 133, control part 14, first control handwheel 1411, first rotating part 1412, first linkage part 1413, first actuating part 1414, first baffle 1415, second control handwheel 1421, second rotating part 1422, second linkage part 1423, fixing part 1424, bending adjustment driving part 1425, bending adjustment fixing part 1426, second baffle 1427, snap ring 1428, third rotating part 1431, handle housing 1441, valve anchoring mechanism 20, disk surface 21, main body part 22, barbs 23, connecting part 24, capture ring 30, capture ring delivery device 40, artificial valve 50, delivery device for artificial valve 60, mitral valve 70. Detailed implementation manners

[0050] To make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of the present utility model and the corresponding drawings. In the description of the present utility model, it should be noted that the term "or" is generally used in the sense of including "and / or" unless otherwise clearly specified in the content.

[0051] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a magnetic connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0052] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0053] Example 1

[0054] Reference Figure 1 — Figure 9 、 Figure 18 , this embodiment provides a delivery device 10 for a valve anchoring mechanism, which is used to deliver the valve anchoring mechanism 20 to the target position of the heart valve. In this embodiment, the target position for delivery is the mitral valve 70. The valve anchoring mechanism 20 can be connected to the capture ring 30 to anchor the subsequently implanted artificial valve 50, which can not only effectively reduce the occurrence probability of left ventricular outflow tract obstruction, but also adapt to patients with different anatomical structures.

[0055] Such as Figure 1 — Figure 4, in some embodiments, the valve anchoring mechanism delivery device 10 sequentially includes a control part 14, a catheter part 13, a loading part 12 and a guiding part 11 from the proximal end to the distal end. Among them, the guiding part 11 is used to guide the movement of the distal end of the entire delivery device within the human body lumen. The loading part 12 can be connected to the valve anchoring mechanism 20 in a compressed state. The catheter part 13 sequentially includes a first control tube 131, a second control tube 132 and a third control tube 133 from the outside to the inside. The distal end of the first control tube 131 can radially limit the valve anchoring mechanism 20 in a compressed state. The second control tube 132 can achieve one-way bending control to adjust the distal direction of the catheter part 13 and realize the precise release of the valve anchoring mechanism 20. The distal end of the third control tube 133 is sequentially connected to the loading part 12 and the guiding part 11. The control part 14 includes a handle housing 1441, a first control component, a second control component and a third control component. The first control component, the second control component and the third control component are sequentially arranged on the handle housing 1441 from the distal end to the proximal end. The first control component and the third control component can respectively control the axial movement of the first control tube 131 and the third control tube 133, and finally realize the control of the release of the valve anchoring mechanism 20. The second control component can realize the bending direction control of the distal end of the second control tube 132.

[0056] As Figure 3 — Figure 5 , in some embodiments, the first control component includes a first control handwheel 1411, a first rotating member 1412, a first linkage member 1413 and a first actuating member 1414. The first control handwheel 1411 is exposed outside the handle housing 1441 and is used for the operator to rotate it. The first control handwheel 1411 is fixedly connected to the first rotating member 1412, and the two are coaxially arranged. The rotation axis of the first rotating member 1412 is perpendicular to the rotation axis of the first linkage member 1413, and the two are engaged and driven. The first linkage member 1413 is rotatably arranged inside the handle housing 1441 through a bearing, and the first linkage member 1413 is coaxially arranged with the first control tube 131. The first linkage member 1413 is also in threaded drive with the first actuating member 1414, and the first actuating member 1414 is fixedly connected to the proximal end of the first control tube 131.

[0057] When the first control handwheel 1411 is rotated, the first control handwheel 1411 and the first rotating member 1412 rotate simultaneously. The first rotating member 1412 transmits its own rotation to the first linkage member 1413 through meshing drive. Due to the existence of the bearing, the first linkage member 1413 rotates circumferentially, and at the same time, the rotation is transmitted to the first actuating member 1414 through thread cooperation. The first actuating member 1414 can drive the axial movement of the first control tube 131.

[0058] In some embodiments, the first control handwheel 1411 and the first rotating member 1412 are fixed by bonding or welding in a manner of concave-convex fit. The specific connection method can be freely selected according to the materials of the first control handwheel 1411 and the first rotating member 1412, and will not be specifically limited herein.

[0059] In some embodiments, the handle housing 1441 is formed by splicing two upper and lower half-shells. Grooves are provided on the inner sides of the two upper and lower half-shells, and the bearing is fixed in the grooves; the interior of the handle housing 1441 is axially penetrated to allow the first control assembly, the second control assembly, the third control assembly, and the control tubes connected to them to pass through; inside the handle housing 1441, a first baffle 1415 is further provided near the proximal position of the first actuator 1414 to limit the axial movement distance of the first actuator 1414 and prevent the first actuator 1414 from slipping out of the threaded engagement area with the first linkage 1413.

[0060] In some embodiments, the first rotating member 1412 is configured as a gear with a conical tooth surface, and its tooth surface is used to mesh with the first linkage 1413; the distal end of the first linkage 1413 is a conical tooth surface for meshing and driving with the first rotating member 1412. The middle part of the first linkage 1413 is penetrated and provided with internal threads for threaded engagement with the first actuator 1414; the outer surface of the first actuator 1414 is provided with external threads that cooperate with the first linkage 1413, and its interior is penetrated for fixed connection with the proximal end of the first control tube 131.

[0061] As Figure 3 — Figure 5 , in some embodiments, the second control assembly includes a second control handwheel 1421, a second rotating member 1422, a second linkage 1423, a fixing member 1424, a bending member, and a traction wire. The second control handwheel 1421 is exposed outside the handle housing 1441 for the operator to rotate it. The second control handwheel 1421 is fixedly connected to the second rotating member 1422, and the two are coaxially arranged. The rotation axis of the second rotating member 1422 is perpendicular to the rotation axis of the second linkage 1423, and the two are in meshing transmission. The second linkage 1423 is connected to the inside of the handle housing 1441 through a bearing. The second linkage 1423 is coaxially arranged with the second control tube 132. The fixing member 1424 is fixedly connected to the proximal end of the second control tube 132 and is fixed inside the handle housing 1441. The bending member is sleeved on the fixing member 1424 and is in threaded transmission with the second linkage 1423. The proximal end of the traction wire is connected to the bending member, and the distal end of the traction wire is connected to the distal end of the second control tube 132. The second linkage 1423 can drive the bending member to move axially and drive the traction wire to control the bending of the distal end of the second control tube 132.

[0062] When the second control handwheel 1421 is rotated, the second rotating member 1422 rotates at the same time. The second rotating member 1422 transmits its own rotation to the second linkage member 1423 through meshing transmission. Due to the presence of the bearing, the second linkage member 1423 rotates circumferentially and transmits the rotation to the bending adjusting member through threaded cooperation. The bending adjusting member can slide axially on the fixing member 1424. When the bending adjusting member slides toward the proximal end, it can pull the traction wire to achieve control of the distal direction of the second control tube 132.

[0063] In some embodiments, the second control hand wheel 1421 and the second rotating member 1422 are fixed by bonding or welding in a concave-convex matching manner; the second rotating member 1422 is configured as a gear with a conical tooth surface, and its tooth surface is used to mesh with the second linkage member 1423; the distal end of the second linkage member 1423 is a conical tooth surface, which is used to mesh with the second rotating member 1422 for transmission, the middle part of the second linkage member 1423 is through, and is provided with an internal thread for threaded cooperation with the bending adjustment member; the fixing member 1424 is internally through, and is used to be fixedly connected to the proximal end of the second control tube 132, and the proximal end of the fixing member 1424 can be further provided with a second baffle 1427, and is fixedly connected to the handle housing 1441 through the second baffle 1427.

[0064] In some embodiments, the bending adjustment member includes a bending adjustment drive member 1425 and a bending adjustment fixing member 1426, which are not connected to each other and can be slidably mounted on the outside of the fixing member 1424. The outer surface of the bending adjustment drive member 1425 is provided with an external thread that cooperates with the second linkage member 1423. The bending adjustment fixing member 1426 is connected to the proximal end of the traction wire, and the outer surface of the bending adjustment drive member 1425 does not have an external thread; when the bending adjustment drive member 1425 is driven by the thread and moves axially toward the proximal end, it can drive the bending adjustment fixing member 1426 to move toward the proximal end to achieve pulling of the traction wire. When the bending adjustment drive member 1425 is driven by the thread and moves axially toward the distal end, the traction wire has the elastic force to restore its own straight shape, and therefore can drive the bending adjustment fixing member 1426 to move axially toward the distal end.

[0065] In some embodiments, the traction wire is made of a high-strength and high-flexibility material and is arranged inside the second control tube 132 or along its wall. Correspondingly, a channel or a hollow structure is further provided inside the second control tube 132 to accommodate the arrangement of the traction wire. The distal end of the traction wire is fixed at the distal end of the second control tube 132, and the proximal end passes through the second control tube 132 and is connected to the bending adjustment fixture 1426. When the bending adjustment fixture 1426 moves toward the proximal end and pulls the traction wire, the traction wire will generate tension inside or on the wall of the second control tube 132, thereby achieving regulation of the distal direction of the second control tube 132.

[0066] In some embodiments, an annular groove is provided at the distal end of the fixing member 1424, and a snap ring 1428 is installed in the groove. The snap ring 1428 is used to further fix the position of the second linkage member 1423.

[0067] As Figure 3 — Figure 5 , in some embodiments, the third control assembly includes a third rotating member 1431. The third rotating member 1431 is provided with external threads, and the proximal end of the handle housing 1441 is provided with matching internal threads. The two are threadedly connected. The interior of the third rotating member 1431 is axially penetrated and fixedly connected to the third control tube 133 coaxially. The rotation of the third rotating member 1431 can drive the axial movement of the third control tube 133.

[0068] In some embodiments, the inner diameters of the first control tube 131, the second control tube 132, and the third control tube 133 decrease in sequence, and a gap is reserved between adjacent pipe fittings to ensure that adjacent two can move axially relative to each other. However, it should be noted that in this embodiment, only the first control tube 131 and the third control tube 133 can move axially. The second control tube 132 is only used for distal bending and does not achieve movement.

[0069] In some embodiments, the inner diameter of the third control tube 133 should at least allow a medical guide wire to pass through, and the inner diameter of the first control tube 131 should at least be larger than the valve anchoring mechanism 20 in the compressed state.

[0070] In some embodiments, the guiding portion 11 is in a smooth conical shape, and an axially penetrated cavity is provided inside it. The cavity is fixedly connected and communicated with the distal end of the third control tube 133 for the guide wire to pass through. The large-diameter end of the guiding portion 11 can be detachably connected to the distal end of the first control tube 131.

[0071] In some embodiments, corresponding snap structures are respectively provided at the proximal end of the guiding portion 11 and the distal end of the first control tube 131. The snap structures can be configured as protrusions and grooves. The protrusion part is located on the inner surface or the outer surface of the proximal end of the guiding portion 11, and the groove part is correspondingly located on the outer surface or the inner surface of the distal end of the first control tube 131. Or, the protrusion part is located at the distal end of the first control tube 131, and the groove part is located at the proximal end of the guiding portion 11.

[0072] In some embodiments, the loading portion 12 is in a disc shape and sleeved on the outer side of the distal end of the third control tube 133. At least one connecting groove is provided in the circumferential direction of the loading portion 12. The connecting groove is configured as a groove that is axially penetrated and radially open, and is used to connect with the connecting member 24 of the valve anchoring mechanism 20 and axially limit it. When the first control tube 131 moves proximally, the valve anchoring mechanism 20 loses radial constraint, and thus can radially expand and disengage from the loading portion 12.

[0073] In some embodiments, a valve anchoring mechanism delivery system is further provided, which includes the above-mentioned valve anchoring mechanism delivery device 10 and also includes the valve anchoring mechanism 20 itself. In application, the valve anchoring mechanism 20 is used in cooperation with the capture ring 30, and the valve anchoring mechanism 20 is a metal stent similar to the valve stent structure.

[0074] As Figure 9 , in some embodiments, the valve anchoring mechanism 20 includes a disk surface 21, a main body portion 22, a connecting member 24 and barbs 23. The disk surface 21 is in the shape of a skirt and can cover the valve orifice. The main body portion 22 extends to the inside of the native valve, and the barbs 23 are used to connect with the capture ring 30.

[0075] In some embodiments, the process of installing the valve anchoring mechanism 20 in the above-mentioned delivery device is as follows:

[0076] Rotate the first control handwheel 1411 so that the first control tube 131 retracts, exposing the loading portion 12 and the loading area of the valve anchoring mechanism 20, as Figure 6 ; fix the connecting member 24 of the valve anchoring mechanism 20 in the compressed state into the connection groove of the loading portion 12, as Figure 7 ; then rotate the first control handwheel 1411 in the opposite direction, and the first control tube 131 moves distally, covering the loading portion 12 and the distal part of the valve anchoring mechanism 20, and contacting the guiding portion 11 to achieve connection, as Figure 8 .

[0077] Example 2

[0078] Refer to Figure 1 — Figure 18 , this embodiment discloses a transcatheter valve replacement system. The technical features already included in the above-mentioned embodiment 1 are naturally inherited in this embodiment and will not be described in detail one by one.

[0079] In some embodiments, the transcatheter valve replacement system includes the valve anchoring mechanism delivery system as described in embodiment 1, and also includes a capture ring delivery system and an artificial valve delivery system.

[0080] In some embodiments, the capture ring delivery system includes a capture ring delivery device 40 and a capture ring 30. The capture ring delivery device 40 preferably adopts a multi-dimensional double-control bending design, as Figure 11 , the capture ring 30 is a helical coil, as Figure 10 , and can be coiled around the chordae tendineae of the mitral valve 70 after being released.

[0081] As Figure 12 、 Figure 13, in some embodiments, the artificial valve delivery system is configured to be balloon-expandable, and its structure includes an artificial valve delivery device 60 and an artificial valve 50. The artificial valve 50 is preferably a balloon-expandable valve made of cobalt-chromium alloy.

[0082] During transcatheter heart valve replacement, first, the capture loop 30 is delivered to the position of the native mitral valve 70 through the capture loop delivery device 40 across the interatrial septum via the femoral vein, and the capture loop 30 is looped around. With the help of the capture loop 30, the anterior and posterior leaflets are captured to reduce the orifice size of the mitral valve 70, as Figure 14 ; during the process of delivering the valve anchoring mechanism delivery device 10 across the interatrial septum via the femoral vein, rotate the second control handwheel 1421 so that the distal end of the second control tube 132 bends, and drive the first control tube 131 to bend into the left atrium, and at the same time be perpendicular to the orifice of the mitral valve 70 to facilitate the subsequent implantation of the valve anchoring mechanism 20, as Figure 15 , rotate the first control handwheel 1411 to retract the first control tube 131. The barbs 23 and the main body part 22 of the valve anchoring mechanism 20 are first exposed. Use its barbs 23 to hook the capture loop 30. The third control tube 133 can be retracted synchronously during this process to prevent the valve anchoring mechanism delivery device 10 from entering the left ventricle too deeply and damaging the ventricular tissue. Subsequently, the entire valve anchoring mechanism delivery device 10 is lifted towards the orifice, and the first control tube 131 continues to retract, exposing the disc surface 21 of the valve anchoring mechanism 20, ensuring that the disc surface 21 of the valve anchoring mechanism 20 covers the orifice position of the mitral valve 70 after release, as Figure 16 .

[0083] Finally, across the interatrial septum via the femoral vein, the artificial valve 50 is delivered to the position of the valve anchoring mechanism 20 through the artificial valve delivery device 60, as Figure 17 , release the artificial valve 50 so that it is implanted into the valve anchoring mechanism 20, as Figure 18 , and complete the replacement of the artificial valve 50.

[0084] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present application thereto. Those of ordinary skill in the art can make various changes and modifications therein without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed in the appended claims.

Claims

1. A valve anchoring mechanism delivery device, characterized in that: It includes a control part, a catheter part, a loading part and a guiding part; The catheter part includes a first control tube, a second control tube and a third control tube in sequence from outside to inside, the guide part is arranged at the farthest end of the third control tube, the loading part is arranged adjacent to the guide part, and the loading part is used to connect the valve anchoring mechanism; the control part includes a first control component, a second control component and a third control component; The first control assembly is used to control the axial movement of the first control tube; The second control assembly includes a second rotating member, a second linkage member, a fixed member, a bending adjusting member and a traction wire. The second rotating member is meshed with the second linkage member for transmission, and the second linkage member can rotate in a circle. The fixed member is fixedly connected to the proximal end of the second control tube. The bending adjusting member is sleeved on the fixed member and is threadedly driven with the second linkage member. The proximal end of the traction wire is connected to the bending adjusting member, and the distal end of the traction wire is connected to the distal end of the second control tube. The second linkage member can drive the bending adjusting member to move axially and drive the traction wire to control the bending of the distal end of the second control tube. The third control assembly is used to drive the third control tube to move axially.

2. The valve anchoring mechanism delivery device according to claim 1, characterized in that: The control part also includes a handle shell, the fixing member is fixedly connected to the handle shell, and the second linkage member is connected to the handle shell through a bearing.

3. The valve anchoring mechanism delivery device according to claim 2, characterized in that: The second rotating member is also fixedly connected to a second control hand wheel, the two are coaxially arranged, and the second control hand wheel is arranged on the outer side of the handle housing; The rotation axis of the second rotating member is arranged perpendicularly to the rotation axis of the second linkage member, and the second linkage member is arranged coaxially with the second control tube.

4. The valve anchoring mechanism delivery device according to claim 2, characterized in that: The first control component is arranged at the distal end of the second control component, and the first control component includes a first rotating member, a first linkage member and a first actuating member. The first rotating member and the first linkage member are gear-engaged for transmission, and the first linkage member is rotatably arranged inside the handle housing through a bearing. The first actuating member is fixedly connected to the proximal end of the first control tube, and the first actuating member and the first linkage member are threadedly transmitted. The first linkage member can drive the axial movement of the first control tube.

5. The valve anchoring mechanism delivery device according to claim 4, characterized in that: The first rotating member is also fixedly connected to a first control hand wheel, the two are coaxially arranged, and the first control hand wheel is arranged on the outer side of the handle housing; The rotation axis of the first rotating member is arranged perpendicularly to the rotation axis of the first linkage member, and the first linkage member is arranged coaxially with the first control tube.

6. The valve anchoring mechanism delivery device according to claim 2, characterized in that: The third control assembly is arranged at the proximal end of the second control assembly, and the third control assembly includes a third rotating member, and the third rotating member is fixedly connected to the third control tube, and the third rotating member can drive the axial movement of the third control tube.

7. The valve anchoring mechanism delivery device according to claim 6, characterized in that: The third rotating member is coaxially arranged with the third control tube, and the third rotating member is threadedly connected with the proximal end of the handle housing.

8. The valve anchoring mechanism delivery device according to claim 1, characterized in that: The guide portion is tapered, and a large-diameter end of the guide portion can be detachably connected to the distal end of the first control tube.

9. The valve anchoring mechanism delivery device according to claim 1, characterized in that: The loading part is disc-shaped and sleeved on the outer side of the distal end of the third control tube. The loading part is circumferentially provided with at least one connecting groove, which is used to connect with the connecting piece of the compressed valve anchoring mechanism and limit its axial position.

10. A valve anchoring mechanism delivery system, characterized in that: The valve anchoring mechanism delivery device comprises the valve anchoring mechanism as described in any one of claims 1 to 9, and also comprises a valve anchoring mechanism.

11. A transcatheter valve replacement system, characterized in that: It comprises the valve anchoring mechanism delivery system as described in claim 10, and also comprises a fishing ring delivery system and an artificial valve delivery system, wherein the fishing ring delivery system comprises a fishing ring delivery device and a fishing ring, and the artificial valve delivery system comprises an artificial valve delivery device and an artificial valve.

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