Valve clip control handle, delivery device and valve repair system

Abstract

The present invention relates to a valve clamp control handle, a conveying device and a valve repair system. The valve clamp control handle includes a shell, an actuating wire, an actuating wire control mechanism, a pull wire and a pull wire control mechanism. The distal end of the shell is provided with a sheath channel that cooperates with the sheath tube; the actuating wire is axially movably arranged in the shell, and the distal end of the actuating wire can be threadedly connected to the valve clamp through the sheath tube; the actuating wire control mechanism is connected to the actuating wire, and the actuating wire control mechanism drives the actuating wire to move under one working condition to open and close the clamp arm, and drives the actuating wire to rotate under another working condition to disengage from the valve clamp; the pull wire can be connected to the capture arm through the sheath tube; the pull wire control mechanism is connected to the pull wire, and the pull wire control mechanism locks and pulls the pull wire under one working condition to open and close the capture arm, and drives the pull wire to disengage from the valve clamp under another working condition. The valve clamp control handle proposed by the present invention has a compact structure and is easy to operate.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a valve clip control handle, a delivery device and a valve repair system. Background Art

[0002] Heart valves refer to the valves between the atria and ventricles or between the ventricles and arteries. The atrioventricular valves include the mitral valve and the tricuspid valve. The mitral valve is two valves attached to the periphery of the left atrioventricular orifice, connected to the papillary muscles by chordae tendineae, and has the function of preventing blood from the left ventricle from flowing back to the left atrium. Mitral regurgitation is a poor anastomosis of the anterior and posterior leaflets of the mitral valve due to organic or functional changes in the mitral valve leaflets and their related structures. During mitral regurgitation, blood will flow back from the left ventricle to the left atrium, causing a series of pathophysiological changes.

[0003] Surgical valve repair or replacement is considered to be the standard treatment for this type of disease. However, surgery has disadvantages such as great trauma, significant postoperative pain, slow recovery, and high risk. In recent years, interventional treatment of heart valve disease has developed rapidly due to its advantages such as less trauma, relative safety, and good efficacy. Among them, the valve repair method developed based on the principle of surgical valve edge-to-edge suturing technology has been recognized for its high safety, simple technical principle, and high feasibility. During this operation, the operator needs to use a delivery device to deliver the valve clamp into the patient's body. The valve clamp control handle in the delivery device is used to control the valve clamp. The valve clamp control handle in the related technology has a complex structure and each structure has a single function, and often requires the use of external tools, resulting in cumbersome operation steps and affecting surgical efficiency. Summary of the Invention

[0004] The present invention aims to at least solve the problem of cumbersome operation steps of the valve clip control handle. This aim is achieved through the following technical solutions:

[0005] The first aspect of the present invention provides a valve clamp control handle for controlling a valve clamp, wherein the valve clamp comprises a plurality of clamp arms and a plurality of capture arms that open and close relative to each other, the valve clamp is connected to the distal end of a sheath, and the valve clamp control handle comprises a housing, an actuating wire, an actuating wire control mechanism, a pull wire and a pull wire control mechanism, the distal end of the housing is connected to the sheath; the actuating wire is axially movably arranged in the housing, and the distal end of the actuating wire can be threadedly connected to the valve clamp via the sheath; the actuating wire The control mechanism is connected to the actuating wire, and the actuating wire control mechanism is configured to drive the actuating wire to move so that the clamping arm opens and closes under one working condition, and to drive the actuating wire to rotate so as to disengage from the valve clamp under another working condition; the pull wire can be connected to the capture arm through the sheath; the pull wire control mechanism is connected to the pull wire, and the pull wire control mechanism is configured to lock and pull the pull wire so that the capture arm opens and closes under one working condition, and to drive the pull wire to disengage from the valve clamp under another working condition.

[0006] In the valve clamp control handle proposed in the embodiment of the present invention, the actuator wire control mechanism can control the movement or rotation of the actuator wire, so that the clamping arm in the valve clamp can realize the opening and closing action, and the actuator wire and the valve clamp can be separated, thereby improving the functional integration of the actuator wire control mechanism; the pull wire control mechanism can drive the pull wire, so that the capture arm in the valve clamp can realize the capture, and the pull wire and the valve clamp can be separated, thereby improving the functional integration of the pull wire control mechanism. Therefore, the valve clamp control handle proposed in this embodiment is not only compact in structure and can realize the control of the entire working process of the valve clamp, but also easy for the operator to operate, thereby solving the problem of complicated operating steps of the valve clamp control handle and improving the surgical efficiency.

[0007] In addition, the valve clip control handle according to the embodiment of the present invention may also have the following technical features:

[0008] In some embodiments of the present invention, the valve clip control handle further includes a sheath fixing assembly, wherein the sheath fixing assembly is connected to the sheath and the housing, respectively, to prevent the sheath from moving.

[0009] In some embodiments of the present invention, a sheath channel and a receiving cavity for installing the sheath fixing assembly are provided in the shell, the receiving cavity is located at the proximal end of the sheath channel and is connected to the sheath channel, and / or the sheath fixing assembly includes two snap-connected pressure rings.

[0010] In some embodiments of the present invention, the actuating wire control mechanism includes a wire pressing assembly, a drive knob and an unloading knob respectively connected to the actuating wire, and the drive knob is configured to drive the actuating wire, the wire pressing assembly and the unloading knob to move synchronously along the axial direction.

[0011] In some embodiments of the present invention, the shell is provided with a first sliding hole from the proximal end inward, the wire pressing assembly is at least partially slidably provided in the first sliding hole, the driving knob is threadedly connected to the proximal end of the first sliding hole and abuts against the proximal end of the wire pressing assembly, and the unloading knob is located on the proximal side of the driving knob.

[0012] In some embodiments of the present invention, the wire pressing assembly includes a wire pressing column and a limit block, the limit block is detachably connected to the proximal side of the wire pressing column, the top of the shell is provided with a first slide groove connected to the first slide hole, the limit block is partially located in the first slide groove and can slide along the first slide groove.

[0013] In some embodiments of the present invention, an indicator portion is extended from the limit block, and a plurality of scale lines cooperating with the indicator portion are provided on the housing.

[0014] In some embodiments of the present invention, a sealed cavity is provided in the housing, the sealed cavity is located at the distal end side of the first sliding hole, and a guide hole for providing guidance for the actuating wire is provided in the sealed cavity.

[0015] In some embodiments of the present invention, the actuator wire control mechanism also includes a wire tube for the actuator wire to pass through, the proximal end of the wire tube is inserted into the wire pressing assembly, the distal end of the wire tube is inserted into the sheath tube, and the part of the wire tube located in the sealing cavity is slidably set in the guide hole.

[0016] In some embodiments of the present invention, the pull wire control mechanism includes a control rod and a wire locking member and a wire withdrawing member mounted on the control rod. At least one second sliding hole is provided in the housing, and the control rod is slidably disposed in the second sliding hole.

[0017] In some embodiments of the present invention, the shell is provided with a second sliding groove and at least two limit grooves connected to the second sliding hole, and the control rod is provided with a limit protrusion, which is configured to slide in the second sliding groove according to the sliding of the control rod, and cooperate with the limit groove according to the rotation of the control rod.

[0018] In some embodiments of the present invention, the housing includes a bottom shell and a top cover, and the bottom shell is buckled and connected to the top cover.

[0019] The second aspect of the present invention proposes a delivery device, which includes a sheath, an adjustable bending sheath, a sheath bending handle and a valve clamp control handle proposed according to any of the above embodiments, the adjustable bending sheath is connected to the sheath bending handle, the sheath is movably inserted into the adjustable bending sheath, and the proximal end of the sheath is connected to the valve clamp control handle.

[0020] The delivery device proposed in the embodiment of the present invention has the same advantages as the valve clip control handle proposed in any of the above embodiments, which will not be described in detail here.

[0021] A third aspect of the present invention provides a valve repair system, which includes a valve clipper and a delivery device according to any of the above embodiments, wherein the sheath of the delivery device is detachably connected to the valve clipper to deliver the valve clipper.

[0022] The valve repair system proposed in the embodiment of the present invention has the same advantages as the valve clip control handle and delivery device proposed in any of the above embodiments, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief introduction to the drawings in the implementation manner. Those skilled in the art can also derive other drawings based on these drawings without making any creative efforts.

[0024] Figure 1 This is a schematic diagram of the structure of the valve repair system;

[0025] Figure 2 This is a schematic diagram of the structure of a valve clip in a valve repair system;

[0026] Figure 3 A schematic diagram of the structure of a valve clip control handle;

[0027] Figure 4 This is a schematic diagram of the internal structure of the valve clip control handle;

[0028] Figure 5 for Figure 4 A top view of

[0029] Figure 6 An exploded view of the actuator wire control mechanism in the valve clip control handle;

[0030] Figure 7 An exploded view of the pull wire control mechanism in the valve clip control handle;

[0031] Figure 8 A partial exploded view of the valve clip control handle;

[0032] Figure 9A schematic diagram of the valve clip control handle controlling the opening of the clamping arms and the capture arms of the valve clipper;

[0033] Figure 10 Schematic diagram of the valve clip control handle controlling the closing of the clip arms and the capturing of the capture arms of the valve clipper;

[0034] Figure 11 Schematic diagram of the valve clip control handle being separated from the valve clipper. DETAILED DESCRIPTION

[0035] The following will refer to the drawings in the embodiments of the present invention. The terms used in the text are only for the purpose of describing specific example implementation methods and are not to be understood as limiting the present invention. For example, the terms "including" and "having" not only indicate the existence of the stated features, but also do not exclude the existence of other features; the terms "first" and "second" do not imply a sequence or order; the terms "inside", "outside", "above", and "below" are only for the convenience of describing the relationship of one feature relative to another feature shown in the drawings, and do not indicate that they must have a specific orientation. 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 distal center and the proximal center of the medical device in its natural state. In the description of the present invention, the above definitions are only for the convenience of expression and are not to be understood as limiting the present invention.

[0036] See also Figures 1 to 5 The embodiment of the first aspect of the present invention proposes a valve clip control handle 100, and the embodiment of the second aspect of the present invention proposes a delivery device 1100, which can be applied to the valve repair system 1000 proposed in the embodiment of the third aspect of the present invention, such as Figure 1 As shown, in valve repair system 1000, a delivery device 1100 is used to deliver a valve clip 1200 into a patient's body, for example, via a minimally invasive portal or blood vessel to a desired location, thereby repairing a heart valve (including but not limited to the mitral, tricuspid, aortic, and pulmonary valves). A valve clip control handle 100 within delivery device 1100 is used to control the actions of valve clip 1200, such as capturing and clamping.

[0037] For example, see Figure 2The valve clipper 1200 includes a sliding member 1203, a plurality of relatively open and closeable clamping arms 1201, and a plurality of capture arms 1202. When the sliding member 1203 slides axially, the clamping arms 1201, which are directly connected thereto or indirectly connected via an intermediate structure, rotate to open or close, thereby clamping the valve. For example, when the valve clipper 1200 is used for mitral valve repair, the number of clamping arms 1201 and capture arms 1202 can be set to two, with the two capture arms 1202 used to capture the valve and the two clamping arms 1201 used to clamp the captured valve, thereby achieving edge-to-edge repair of the mitral valve. Based on this, the valve clip control handle 100 proposed in this embodiment is connected to the valve clipper 1200 via a sheath 1130, with the valve clipper 1200 connected to the distal end of the sheath 1130 and the valve clip control handle 100 connected to the proximal end of the sheath 1130.

[0038] Please continue reading Figure 1 、 Figures 2 to 5 , and refer to Figures 6 to 8 The valve clip control handle 100 proposed in this embodiment includes a housing 10, an actuating wire 20, an actuating wire control mechanism 30, a pull wire 40 and a pull wire control mechanism 50. The distal end of the housing 10 is connected to the sheath 1130; the actuating wire 20 is axially movably arranged in the housing 10, and the distal end of the actuating wire 20 can pass through the sheath 1130 and be threadedly connected to the valve clamp 1200; the actuating wire control mechanism 30 is connected to the actuating wire 20, and the actuating wire control mechanism 30 is configured to be in a working condition The actuator wire 20 is driven to move under the working condition to open and close the clamping arm 1201, and the actuator wire 20 is driven to rotate under another working condition to disengage from the valve clamp 1200; the pull wire 40 can be connected to the capture arm 1202 through the sheath 1130; the pull wire control mechanism 50 is connected to the pull wire 40, and the pull wire control mechanism 50 is configured to lock and pull the pull wire 40 under one working condition to open and close the capture arm 1202, and drive the pull wire 40 to disengage from the valve clamp 1200 under another working condition.

[0039] In the valve clip control handle 100 proposed in this embodiment, the actuating wire control mechanism 30 can be adjusted to different working conditions to control the movement or rotation of the actuating wire 20, thereby realizing the control of the opening and closing action of the clamping arm 1201 in the valve clipper 1200, and the control of the disengagement action of the actuating wire 20 from the valve clipper 1200, thereby improving the functional integration of the actuating wire control mechanism 30; by providing a pull wire control mechanism 50 to drive the pull wire 40, it is possible to realize the control of the capturing action of the capturing arm 1202 in the valve clipper 1200, and the control of the disengagement action of the pull wire 40 from the valve clipper 1200, thereby improving the functional integration of the pull wire control mechanism 50. As a result, the valve clip control handle 100 realizes the control of the entire working process of the valve clipper 1200 on the basis of a compact structure, is convenient for the operator to operate, solves the problem of cumbersome operating steps of the valve clip control handle 100, and improves the efficiency of the operation.

[0040] Please continue reading Figure 6 , and refer to Figures 3 to 5 The housing 10 in the valve clip control handle 100 is used to install the actuator wire control mechanism 30, the pull wire control mechanism 50 and the connecting sheath 1130. The housing 10 can be made by three-dimensional printing or injection molding. In some embodiments of the present invention, such as Figure 6 As shown, the shell 10 includes a bottom shell 102 and a top cover 101. The bottom shell 102 and the top cover 101 are snap-fitted and connected by fasteners such as screws or bolts. In addition, a sleeve can be connected to the far end of the shell 10 to improve the reliability of the connection between the bottom shell 102 and the top cover 101.

[0041] Furthermore, if Figure 4 and Figure 6 As shown, the valve clip control handle 100 also includes a sheath fixing assembly 60. The sheath fixing assembly 60 can be arranged outside the shell 10, or can be arranged inside the shell 10 near the distal end of the shell 10. In this embodiment, a sheath channel 11 is provided at the distal end of the shell 10. The proximal end of the sheath 1130 is passed through the shell 10 through the sheath channel 11 and is connected to the sheath fixing assembly 60. The sheath fixing assembly 60 is connected to the shell 10. For example, the sheath fixing assembly 60 can be connected to the shell 10 by a screw, thereby preventing the sheath 1130 from moving, that is, preventing the sheath 1130 from moving or rotating relative to the shell 10, so that the proximal end of the sheath 1130 is fixed in the shell 10 and remains stable.

[0042] Furthermore, the sheath fixing assembly 60 may include two pressure rings 61 arranged opposite to each other, the two pressure rings 61 are fastened together and hold the sheath 1130 tightly. For example, the two pressure rings 61 have the same structure, such as Figure 6As shown, the cross-sectional shape of the portion where the pressure ring 61 embraces the sheath tube 1130 is arc-shaped or semicircular, and connecting plates are extended on both sides of the pressure ring 61. When the two pressure rings 61 are buckled and connected, the connecting plates on the same side of the two pressure rings 61 are aligned and abutted. On this basis, the two connecting plates can be connected by welding, or the two connecting plates can be penetrated by fasteners such as screws, so that the two pressure rings 61 are connected and embrace the sheath tube 1130.

[0043] On the basis of the above implementation mode, Figure 6 As shown, a accommodating cavity 12 for installing a sheath fixing assembly 60 is provided in the shell 10. The accommodating cavity 12 is located at the proximal end of the sheath channel 11 and is connected to the sheath channel 11. Taking the sheath fixing assembly 60 including two pressure rings 61 and the shell 10 including a bottom shell 102 and a top cover 101 as an example, grooves are respectively provided on the bottom shell 102 and the top cover 101, and the two grooves are matched to form the above-mentioned accommodating cavity 12. On the basis of being connected, the two pressure rings 61 can also be connected to at least one of the bottom shell 102 and the top cover 101 by fasteners such as screws. Therefore, in this embodiment, the pressure ring 61 fits the shape of the inner side of the shell 10, which is not only convenient for installation, but also further improves the stability of the sheath 1130 and the reliability of the connection between the sheath fixing assembly 60 and the sheath 1130 and the shell 10.

[0044] Furthermore, if Figures 4 to 6 As shown, a sealed cavity 14 is provided in the housing 10. The sealed cavity 14 is located on the proximal side of the accommodating cavity 12 and is in communication with the accommodating cavity 12, so that the proximal end of the sheath tube 1130 can extend into the sealed cavity 14. In this embodiment, the sealed cavity 14 is formed by a sealing ring 80. For example, corresponding annular grooves are provided on the opposite sides of the bottom shell 102 and the top cover 101, and the sealing ring 80 cooperates with the two annular grooves. The sealing ring 80 can be a rubber ring, etc. In addition, one or two exhaust ports 17 are provided on the housing 10. The exhaust ports 17 are in communication with the sealed cavity 14 and are connected to an exhaust valve (not shown in the figure).

[0045] Please continue reading Figures 1 to 6 , and refer to Figure 7 The distal end of the actuator wire 20 in the valve clip control handle 100 is connected to the valve clip 1200. Based on the above embodiment, the actuator wire 20 is connected to the sliding member 1203 of the valve clip 1200 to drive the sliding member 1203 to slide axially, thereby driving the clamp arm 1201 to open and close. Figure 7As shown, the actuator wire 20 is arranged axially and partially located within the housing 10. The portion of the actuator wire 20 near the distal end of the housing 10 extends into the sheath 1130 and extends within the sheath 1130 to connect with the sliding member 1203 of the valve clip 1200. In this embodiment, the actuator wire 20 is threadedly connected to the sliding member 1203. For example, the distal end of the actuator wire 20 is provided with an external thread segment 21, which cooperates with the threaded hole in the sliding member 1203. This threaded connection ensures the stability of the actuator wire 20 when driving the sliding member 1203 in axial movement, and facilitates the operator to disengage the actuator wire 20 from the valve clip 1200 by rotating the actuator wire 20. It should be noted that in this embodiment, disengagement refers to the disconnection between the two. Furthermore, the actuator wire 20 can be configured as a memory alloy wire, such as a nickel-titanium alloy wire.

[0046] Further, according to the above embodiment, if Figure 6 As shown, a guide hole 15 is also provided in the sealed cavity 14. For example, semicircular grooves are respectively provided on the opposite sides of the top cover 101 and the bottom shell 102, and the two semicircular grooves are matched to form the guide hole 15. In this embodiment, the guide hole 15 can cooperate with the actuating wire 20 to limit the actuating wire 20 and provide guidance for the actuating wire 20 to prevent the actuating wire 20 from bending in the sealed cavity 14.

[0047] According to the above embodiment, the actuating wire 20 is connected to the actuating wire control mechanism 30, and the operator can control the movement of the actuating wire 20 by operating the actuating wire control mechanism 30. Figure 7 In some embodiments of the present invention, the actuating wire control mechanism 30 includes a wire pressing assembly 31, a drive knob 32, and an unloading knob 33 arranged sequentially from the distal end to the proximal end, and the actuating wire 20 is inserted into the above-mentioned components. The wire pressing assembly 31 is slidably disposed in the housing 10 and is connected to the actuating wire 20 inserted therein. The wire pressing assembly 31 is used to compress the actuating wire 20. The drive knob 32 abuts against the proximal end of the wire pressing assembly 31 and is threadedly connected to the housing 10. The drive knob 32 is used to drive the actuating wire 20 to move. The unloading knob 33 is located on the proximal side of the drive knob 32 and is connected to the actuating wire 20 inserted therein. The unloading knob 33 is used to drive the actuating wire 20 to rotate.

[0048] On the basis of the above implementation mode, Figures 4 to 6 As shown, the shell 10 is provided with a first sliding hole 13 from the proximal end toward the inside, and the first sliding hole 13 is located on the proximal side of the sealing cavity 14. The wire pressing assembly 31 is at least partially slidably provided in the first sliding hole 13. Taking the shell 10 including a top cover 101 and a bottom shell 102 as an example, grooves are respectively provided on the opposite sides of the top cover 101 and the bottom shell 102, and the two grooves are engaged with each other to form the first sliding hole 13.

[0049] In this embodiment, the wire pressing assembly 31 includes a wire pressing column 311, which is arranged in the first sliding hole 13 and can rotate and slide in the first sliding hole 13. Figure 7 As shown, a first through hole 3111 is axially provided in the wire pressing column 311, and the actuating wire 20 is passed through the first through hole 3111. Furthermore, the wire pressing column 311 is radially provided with at least one first locking hole 3112, and the first locking hole 3112 is communicated with the first through hole 3111. The first locking hole 3112 is used to install fasteners such as bolts or studs, and the actuating wire 20 in the first through hole 3111 is locked by tightening the fasteners. Thus, the actuating wire 20 is relatively fixed to the wire pressing column 311, and the actuating wire 20 can move or rotate synchronously with the wire pressing column 311.

[0050] Taking the fastener as a stud as an example, in an optional embodiment, the first locking hole 3112 is set as a blind hole, which is opened inward from the side wall of the wire pressing column 311 to pass through the first through hole 3111. The inner wall of the blind hole is provided with an internal thread, and the stud cooperates with the internal thread. The bottom end of the stud abuts against the inner wall of the first through hole 3111, thereby tightening the actuator wire 20 passing through the first through hole 3111. In another optional embodiment, the first locking hole 3112 is set as a through hole, and the first locking hole 3112 is divided into two sections by the first through hole 3111, wherein the hole section that cooperates with the stud is a threaded hole section, and the other section is set as a light hole section. Furthermore, the inner diameter of the light hole section can be larger than the inner diameter of the threaded hole section, so that the bottom of the stud extends into the light hole section, pressing the actuator wire 20 located at the connection point between the first through hole 3111 and the first locking hole 3112 into a curved shape, further improving the reliability of the connection between the actuator wire 20 and the wire pressing column 311.

[0051] In this embodiment, the drive knob 32 is provided with an axial through-hole, within which the actuating wire 20 is slidably disposed. The drive knob 32 includes a threaded rod 321 and a rotating head 322 connected thereto. The threaded rod 321 and the rotating head 322 can be configured as an integrally formed structure. The drive knob 32 is threadedly connected to the proximal end of the first sliding hole 13, wherein the rotating head 322 is located outside the housing 10 and the threaded rod 321 is threadedly connected to the first sliding hole 13. When the drive knob 32 is rotated relative to the housing 10, the threaded rod 321 moves axially within the first sliding hole 13, thereby pushing the pressing wire assembly 31 and the actuating wire 20 to move axially, thereby driving the clamping arm 1201 of the valve clip 1200 to open or close.

[0052] Furthermore, the diameter of the threaded rod 321 can be larger than the diameter of the wire pressing column 311, so that the first sliding hole 13 in the shell 10 is set as a stepped hole, wherein the hole section with a larger diameter is located on the proximal side of the hole section with a smaller diameter, and the threaded rod 321 cooperates with the hole section with a larger diameter. This setting makes the lead of the threaded rod 321 larger, so that the driving knob 32 can move axially a longer distance while the number of rotations remains unchanged, that is, the driving efficiency of the driving knob 32 is improved, which is convenient for the operator to operate.

[0053] In this embodiment, the unloading knob 33 is located on the proximal side of the driving knob 32, that is, outside the housing 10. According to the above embodiment, the unloading knob 33 is connected to the actuating wire 20 provided therein. For example, the unloading knob 33 can be configured as a cylindrical shape to facilitate the operator to twist it; the unloading knob 33 is provided with a second through hole 331 along the axial direction and one or more second locking holes 332 along the radial direction. The second locking holes 332 are used to install fasteners such as bolts or studs, and the actuating wire 20 located in the second through hole 331 is locked by the fasteners. As a result, the actuating wire 20 is relatively fixed to the unloading knob 33, and the actuating wire 20 can move or rotate synchronously with the wire pressing column 311. Furthermore, the second locking hole 332 can be configured as a blind hole or a through hole. The specific structure of the second locking hole 332 can refer to the first locking hole 3112 in the above embodiment, and will not be repeated here.

[0054] It can be understood that in this embodiment, there is no gap between the proximal surface of the driving knob 32 and the distal surface of the unloading knob 33, so as to ensure that when the driving knob 32 moves axially toward the distal end or the proximal end, it can drive the unloading pressing wire assembly 31 and the unloading knob 33 to move synchronously. On this basis, the valve clip control handle 100 also includes a bearing 70, and the driving knob 32 and the unloading knob 33 are respectively matched with the bearing 70. Figure 7 As shown, taking the driving knob 32 including the connected threaded rod 321 and the rotating head 322 as an example, the radial dimension of the rotating head 322 is larger than the radial dimension of the unloading knob 33, and the bearing 70 can be arranged in the rotating head 322, and the unloading knob 33 is partially inserted in the rotating head 322 and matched with the bearing 70. In this embodiment, by providing the bearing 70, it is avoided that the driving knob 32 and the unloading knob 33 affect the other when rotating, which not only improves the stability of the actuating wire 20 during axial movement, but also avoids the problem of loose connection between the actuating wire 20 and the unloading knob 33 and the wire pressing assembly 31 caused by excess torsion.

[0055] On the basis of the above embodiment, the wire pressing assembly 31 also includes a limit block 312, which is detachably connected to the wire pressing post 311. The connection method can be snap-in, plug-in, or connected by a fastener that is easy to disassemble, or a combination of multiple connection methods. In this embodiment, the limit block 312 is at least partially located on the proximal side of the wire pressing post 311, that is, it is clamped between the wire pressing post 311 and the drive knob 32. It can be understood that the setting of the limit block 312 can avoid the direct contact between the above two, causing the wire pressing post 311 to rotate with the drive knob 32. As a result, the wire pressing post 311 and the actuating wire 20 can avoid unnecessary rotation when performing a moving action, thereby not only improving the stability of the actuating wire 20 during axial movement, but also avoiding the problem of loose connection between the actuating wire 20 and the wire pressing post 311 and other structures caused by excess torsion.

[0056] For example, please refer to Figure 7 The bottom of the limit block 312 is provided with a connecting column, which is inserted into the connecting hole opened from the top downward on the wire pressing column 311. Furthermore, with the plane perpendicular to the axial direction as the cross-section, the cross-sectional shape of the limit block 312 is rectangular. The proximal end surface of the limit block 312 exceeds the proximal end surface of the wire pressing column 311, and the protruding portion extends toward the bottom to form a clamping portion 3122. The clamping portion 3122 is clamped between the wire pressing column 311 and the driving knob 32. According to the actuating wire 20 being inserted into the wire pressing column 311 and the driving knob 32, an avoidance groove can be provided on the clamping portion 3122 along the axial direction to ensure that the actuating wire 20 is smoothly inserted. Therefore, when the driving knob 32 rotates, the wire pressing column 311 will not rotate because the limit block 312 cannot rotate.

[0057] For further information, please refer to Figure 7 In some embodiments of the present invention, the screw thread assembly 31 further includes a hand screw 313, which is used to connect the limit block 312 and the screw thread post 311. For example, the hand screw 313 is inserted into the limit block 312, and the handle screw extends into the screw thread post 311 and is threadedly connected to the screw thread post 311. The hand screw end of the hand screw 313 is exposed outside the housing 10, which is convenient for the operator to operate. Thus, the connection between the hand screw 313 and the screw thread post 311 can be released by twisting the hand screw 313, thereby removing the limit block 312. In an optional embodiment, a threaded hole is provided in the limit block 312, and a threaded connection is provided between the hand screw 313 and the limit block 312. Thus, after the hand screw 313 is disconnected from the screw thread post 311, the hand screw 313 and the limit block 312 remain threadedly connected. The operator can drive the limit block 312 to disengage by pulling the hand screw 313, further improving the convenience of operation.

[0058] Further, see Figure 6The top of the housing 10 is provided with a first slide groove 131. Taking the housing 10 including the top cover 101 and the bottom shell 102 as an example, the first slide groove 131 is provided on the top cover 101. The first slide groove 131 is connected to the first slide hole 13 in the housing 10. On this basis, in combination with reference to Figures 3 to 5 The limit block 312 is partially located within the first chute 131, and the width of the limit block 312 is slightly smaller than that of the first chute 131, thereby facilitating the removal of the limit block 312 from the first chute 131. Furthermore, the thumb screw 313 inserted into the limit block 312 is exposed outside the housing 10, making it easy for the operator to remove the limit block 312 by turning and pulling the thumb screw 313 without the need for external tools, further improving operational convenience.

[0059] On the basis of the above embodiment, the length of the first slide groove 131 is greater than or equal to the maximum distance of axial movement of the wire pressing assembly 31. When the wire pressing assembly 31 slides axially as a whole, the limit block 312 can slide along the first slide groove 131. On this basis, the top surface of the limit block 312 is higher than the top surface of the housing 10. Further, as shown in FIG. Figure 7 As shown, at least one of the two sides of the limit block 312 is provided with an indicator portion 3121 extending therefrom. The indicator portion 3121 can be a columnar body integrally formed on the limit block 312, or a pointer-shaped component connected to the limit block 312. Accordingly, a plurality of scale lines 1011 cooperating with the indicator portion 3121 are provided on the housing 10. The scale lines 1011 can indicate the state of the clamping arm 1201 in the valve clamp 1200, such as the closed and open angles, etc., to provide the operator with an indication of the axial movement position of the actuator wire 20, thereby facilitating the operator's observation and operation during the operation.

[0060] like Figure 4 and Figure 7 As shown, in some embodiments of the present invention, the actuating wire control mechanism 30 further includes a wire tube 34, which can be specifically configured as a stainless steel tube or a nickel-titanium alloy tube. The wire tube 34 is disposed in the housing 10, extending from the inside of the wire pressing column 311 toward the distal end, and its distal end penetrates into the sheath 1130, and the actuating wire 20 is penetrated into the wire tube 34. It can be understood that one end of the actuating wire 20 located in the housing 10 extends into the sheath 1130, and the other end is connected to the actuating wire control mechanism 30. During the axial movement of the wire pressing assembly 31, the middle portion of the actuating wire 20 is prone to bending. Therefore, in this embodiment, the wire tube 34 is used to limit the actuating wire 20 to prevent the actuating wire 20 from bending.

[0061] Furthermore, according to the above embodiment, a guide hole 15 for restricting the actuating wire 20 is provided within the sealed cavity 14 of the housing 10. In this embodiment, based on the actuating wire control mechanism 30 including a wire tube 34, the guide hole 15 cooperates with the wire tube 34, and the wire tube 34 is able to slide axially within the guide hole 15. In addition, a through hole for the wire tube 34 to pass through is provided on the sealing ring 80 that encloses the sealed cavity 14. The portion of the wire tube 34 near the proximal end extends through the through hole to the first sliding hole 13 and is inserted into the wire pressing column 311.

[0062] Based on the above embodiment, the portion of the wire tube 34 inserted into the wire pressing post 311 extends through at least one first locking hole 3112, and the fastener provided in the first locking hole 3112 is used to lock the wire tube 34. Exemplarily, the wire pressing post 311 is provided with four first locking holes 3112, wherein two first locking holes 3112 near the distal end of the wire pressing post 311 are provided with studs, the ends of which abut against the outer wall of the wire tube 34, thereby locking the wire tube 34; the studs provided in the other two first locking holes 3112 abut against the actuating wire 20 extending from the wire tube 34, thereby locking the actuating wire 20. As a result, when the wire pressing post 311 slides axially under the drive of the drive knob 32, the actuating wire 20 and the wire tube 34 both move axially synchronously with it, thereby preventing the actuating wire 20 from bending and improving the stability of the actuating wire 20.

[0063] See also Figures 9 to 11 When the limit block 312 is connected to the wire pressing column 311, the actuating wire control mechanism 30 is in the first working state. At this time, the operator can rotate the driving knob 32 clockwise or counterclockwise to make the driving knob 32, the wire pressing column 311, the limit block 312, the wire tube 34, the unloading knob 33 and the actuating wire 20 move axially synchronously. For example, Figure 9 As shown, when moving toward the distal end, the clamp arm 1201 of the valve clamp 1200 can be driven to open, as shown in FIG. Figure 10 As shown, when moving toward the proximal end, the clamping arm 1201 can be driven to close. Figure 11 As shown, when the operator turns the hand screw 313 and removes the stop block 312, the actuating wire control mechanism 30 is in the second working state. At this time, the operator can turn the unloading knob 33 to cause the unloading knob 33, the wire pressing post 311, the wire guide 34, and the actuating wire 20 to rotate synchronously about their own axes, thereby releasing the threaded connection between the actuating wire 20 and the sliding member 1203 in the valve clip 1200, that is, disengaging the actuating wire 20 from the valve clip 1200. Therefore, in this embodiment, the actuating wire control mechanism 30 can change the working state simply by removing the stop block 312, thereby controlling the actuating wire 20 to achieve different movements, thereby improving operational convenience and, when applied to the delivery device 1100 and the valve repair system 1000, improving surgical efficiency.

[0064] Please continue reading Figures 1 to 6 , and refer to Figures 8 to 11 The pull wire 40 is connected to the capture arm 1202, and the two ends of the pull wire 40 extend toward the proximal end. In this embodiment, the pull wire 40 can be made of nickel-titanium alloy wire or medical suture. It should be noted that when the valve clip 1200 includes two capture arms 1202, the pull wire 40 can be provided as one, and the one pull wire 40 sequentially passes through the two capture arms 1202, thereby simultaneously controlling the movement of the two capture arms 1202. Accordingly, the valve clip control handle 100 is provided with a pull wire control mechanism 50 that cooperates with the pull wire 40. Alternatively, the pull wire 40 can be provided as two, each pull wire 40 is connected to a capture arm 1202, thereby controlling the independent movement of the two capture arms 1202. Accordingly, the valve clip control handle 100 is provided with two pull wire control mechanisms 50.

[0065] The following embodiment is described by taking the example of two pull wires 40. Figure 8 , and refer to Figure 4 and Figure 5 The four ends of the two puller wires 40 are respectively inserted into the four channels of the sheath 1130 and then pass into the housing 10 from the proximal end of the sheath 1130. Then, the two ends of one puller wire 40 are extended and connected to one puller wire control mechanism 50, and the two ends of the other puller wire 40 are extended and connected to the other puller wire control mechanism 50. In this embodiment, the two puller wire control mechanisms 50 can be respectively arranged on both sides of the actuating wire control mechanism 30. This not only prevents the two puller wires 40 from interfering with each other, but also fully utilizes the space in the housing 10.

[0066] Please continue reading Figure 8 , combined with reference Figures 9 to 11In some embodiments of the present invention, the pull wire control mechanism 50 includes a control rod 51, a locking wire component 52 and a withdrawing wire component 53. The pull wire 40 is passed through the control rod 51, and the control rod 51 is at least partially slidably arranged in the shell 10. The control rod 51 can drive the pull wire 40 to move so that the capture arm 1202 opens and closes. Taking the two capture arms 1202 as an example, in this embodiment, the capture arm 1202 is opened, which means that the two capture arms 1202 are relatively close to each other and are in a state to be captured. The capture arm 1202 is closed, which means that the two capture arms 1202 are relatively far away from each other and rotate toward the clamping arm 1201 to capture the valve. The wire locking component 52 is installed on the control rod 51. The wire locking component 52 locks the pulling wire 40 under the first working condition and loosens the pulling wire 40 under the second working condition; the wire withdrawing component 53 is detachably installed on the control rod 51 or the wire locking component 52 and connected to the pulling wire 40. The wire withdrawing component 53 can drive the pulling wire 40 to disengage from the capture arm 1202 under the second working condition.

[0067] Based on the above embodiment, a second slide hole 16 is provided in the housing 10, and an aperture is provided on the proximal wall of the housing 10. The control rod 51 is slidably disposed in the second slide hole 16. Taking the housing 10 as an example, which includes a top cover 101 and a bottom shell 102, grooves are provided on opposing sides of the top cover 101 and the bottom shell 102. The two opposing grooves engage to form the second slide hole 16. The number of second slide holes 16 is the same as the number of pull wire control mechanisms 50. In this embodiment, two second slide holes 16 are provided, one on each side of the first slide hole 13.

[0068] Furthermore, a limiting protrusion 5101 is provided on the control rod 51. Figure 6 As shown, the housing 10 is provided with a first limiting groove 162 and a second limiting groove 163. The first limiting groove 162 and the second limiting groove 163 are arranged along the sliding direction of the control rod 51. When the control rod 51 slides along the second sliding hole 16, the limiting protrusion 5101 can engage with the first limiting groove 162 or the second limiting groove 163. It can be understood that the control rod 51 can drive the pull wire 40 to move, thereby driving the capture arm 1202 of the valve clipper 1200 to open or close. In this embodiment, the first limiting groove 162 and the second limiting groove 163 can cooperate with the limiting protrusion 5101 to maintain the control rod 51 in a fixed position, thereby maintaining the pull wire 40 in the state of driving the capture arm 1202 to open or to maintain the state of driving the capture arm 1202 to close. Therefore, this arrangement improves the stability of the pull wire 40 and facilitates operation by the operator.

[0069] In an optional embodiment, the limiting protrusion 5101 can be configured as an elastic structure. When the control rod 51 slides in the second sliding hole 16, the limiting protrusion 5101 generates elastic deformation. When sliding to the first limiting groove 162 or the second limiting groove 163, the limiting protrusion 5101 recovers its deformation and extends into the first limiting groove 162 or the second limiting groove 163 to engage with it. In another optional embodiment, please refer to Figure 8 , the limiting protrusion 5101 is set as a protrusion integrally formed on the control rod 51, accordingly, as Figure 6 As shown, the housing 10 is provided with a second slide groove 161 connected to the second slide hole 16. When the control rod 51 slides along the second slide hole 16, the limiting protrusion 5101 slides in the second slide groove 161 accordingly. The first limiting groove 162 and the second limiting groove 163 are respectively connected to the second slide groove 161 and are arranged along the length direction of the second slide groove 161. Therefore, when the limiting protrusion 5101 moves to align with the first limiting groove 162, the operator can rotate the control rod 51 to make the limiting protrusion 5101 cooperate with the first limiting groove 162; when the limiting protrusion 5101 moves to align with the second limiting groove 163, the operator can rotate the control rod 51 to make the limiting protrusion 5101 cooperate with the second limiting groove 163.

[0070] On the basis of the above embodiment, taking the case 10 including the top cover 101 and the bottom cover 102 as an example, the second slide groove 161, the first limiting groove 162 and the second limiting groove 163 can all be provided on the top cover 101 and pass through the top cover 101 along the thickness direction of the top cover 101, so as to facilitate observation and operation by the operator. Figure 6 As shown, a transparent cover plate 90 may also be installed on the housing 10. The transparent cover plate 90 is embedded in the second slide groove 161, the first limiting groove 162, and the second limiting groove 163 to provide dust protection. In this embodiment, the portion of the control lever 51 located within the first slide hole 13 is configured as a cylinder. As a result, the control lever 51 can rotate about its own axis within the first slide hole 13, thereby driving the limiting protrusion 5101 to rotate. The limiting protrusion 5101 is located at the top of the control lever 51. The operator can rotate the control lever 51 to any angle between 10° and 90° to engage the limiting protrusion 5101 in the first limiting groove 162 or the second limiting groove 163.

[0071] Furthermore, the control rod 51 is provided with a handle portion 512. The handle portion 512 can be configured as a pull rod, a pull ring, or any other shape that is convenient for the operator to grasp. This embodiment does not specifically limit the shape of the handle portion 512. The handle portion 512 can be integrally formed with the control rod 51, for example, it can be located on the same side of the control rod 51 as the limiting protrusion 5101, thereby facilitating the operator to slide and rotate the control rod 51 by grasping the handle portion 512, thereby improving operational convenience.

[0072] Furthermore, in an optional embodiment, the wire locking member 52 and the wire withdrawing member 53 are both mounted on the control rod 51, wherein the wire withdrawing member 53 is connected to the proximal end of the control rod 51; in another optional embodiment, as Figure 8 As shown, the wire locking member 52 is connected to the proximal end of the control rod 51, and the wire withdrawal member 53 is connected to the proximal end of the wire locking member 52. On this basis, the wire withdrawal member 53 is configured as a wire withdrawal knob, which is threadedly connected to the proximal end of the wire locking member 52. For example, the proximal end of the wire locking member 52 is provided with external threads, and the wire withdrawal knob is provided with a threaded hole, so that the wire withdrawal knob is detachably connected to the wire locking member 52. The threaded connection in this embodiment facilitates the removal of the wire withdrawal member 53, improving operational convenience.

[0073] Furthermore, if Figure 8 As shown, the control rod 51 is provided with a wire hole 511 along the axial direction for the pull wire 40 to pass through. The wire hole 511 extends through the control rod 51, and the two ends of the pull wire 40 pass through the wire hole 511 from the distal end of the control rod 51. Taking the control rod 51, the wire locking member 52, and the wire withdrawal member 53 connected in sequence as an example, the two ends of the pull wire 40 extend from the control rod 51 into the wire locking member 52 and are locked or released according to the working condition of the wire locking member 52.

[0074] In some embodiments of the present invention, the wire locking member 52 is configured as a two-way valve, which includes a valve body and a handle. The handle is located at the top of the valve body. Connecting pipes are also provided on both sides of the valve body. The connecting pipe near the distal end is used to connect to the control rod 51. The connection method can be welding, threading, etc. to ensure the reliability of the connection; the connecting pipe near the proximal end is used to connect to the wire withdrawal knob. In this embodiment, when the two-way valve is closed, it can squeeze the pull wire 40 passing through it, thereby locking it. When the two-way valve is open, it can loosen the pull wire 40. This configuration is convenient for the operator to operate and can ensure the stability of the pull wire 40 during operation.

[0075] On the basis of the above embodiment, of the two ends of the pull wire 40, the first end extends to cooperate with the wire locking member 52, and the second end of the pull wire 40 extends to connect with the wire withdrawal knob and can move with the wire withdrawal knob. In other words, both ends of the pull wire 40 cooperate with the wire locking member 52. Taking the wire locking member 52 as a two-way valve as an example, the first end can extend to the proximal connecting pipe of the two-way valve, and the second end extends to the wire withdrawal knob. It can be directly connected to the wire withdrawal knob or be clamped between the wire withdrawal knob and the connecting pipe. Figure 9 and Figure 10As shown, when the two-way valve is closed, both ends of the wire are locked. At this time, the pull wire 40 is relatively fixed to the control rod 51 and the wire locking member 52. The operator can axially slide the control rod 51 to move the pull wire 40 axially, thereby driving the capture arm 1202 of the valve clip 1200 to open or close; Figure 11 As shown, when the two-way valve is opened, both wire ends are loosened. At this time, the operator can pull the second wire end to extract the pull wire 40 and separate the pull wire 40 from the valve clipper 1200 without the need to use external tools such as scissors to handle the pull wire 40.

[0076] In some embodiments of the present invention, the second end of the pull wire 40 is connected to the wire withdrawal knob, so that the operator can pull out the pull wire 40 while unloading the wire withdrawal knob, which is simple to operate. Further, the second end of the pull wire 40 and the wire withdrawal knob can be connected in a fixed manner such as bonding, or, in another optional embodiment, Figure 8 As shown, the wire-removing knob is provided with two through holes along the axial direction, and the second wire end of the pulling wire 40 is passed through the two through holes in a circuitous manner. Exemplarily, the distal end of the wire withdrawal knob can be provided with a mounting post 531, two through holes are provided through the mounting post 531, and the proximal end of the mounting post 531 is located inside the wire withdrawal knob, thereby preventing the pull wire 40 from being exposed. The second wire end of the pull wire 40 passes through one of the through holes in a direction from the distal end to the proximal end, and then passes through the other through hole in a direction from the proximal end to the distal end, thereby passing back to the distal side of the wire withdrawal knob. On this basis, the second wire end is provided with a knotting portion 41, and the radial dimension of the knotting portion 41 is larger than the radial dimension of the through hole, so that the knotting portion 41 is stuck on the distal side of the wire withdrawal knob, thereby connecting the pull wire 40 to the wire withdrawal knob, and when the locking wire member 52 is in the second working state, that is, when the pull wire 40 is released, when the operator unloads the wire withdrawal knob, the pull wire 40 can move with the wire withdrawal knob, thereby disengaging from the valve clamp 1200.

[0077] See also Figure 9 and Figure 10 When the two-way valve is closed, the pull wire control mechanism 50 is in the first working state. At this time, the operator can slide the control rod 51 axially to make the control rod 51, the two-way valve, the wire withdrawal knob and the pull wire 40 move synchronously. When sliding toward the proximal end, it can drive the capture arm 1202 to open and enter the capture state; when sliding toward the distal end, since the capture arm 1202 is usually made of memory alloy, when the pull wire 40 loosens, the capture arm 1202 will return to its initial state, that is, rotate toward the clamp arm 1201 to close and capture the valve. After the valve is captured, please refer to Figure 11The operator can open the two-way valve and loosen the pull wire 40. At this time, the pull wire control mechanism 50 is in the second working state. The operator can turn the wire withdrawal knob to unload it and then withdraw the pull wire 40, thereby releasing the connection between the pull wire 40 and the capture arm 1202, that is, disengaging the pull wire 40 from the valve clipper 1200. Therefore, in this embodiment, the pull wire control mechanism 50 changes the working state by opening and closing the two-way valve, and disengagement can be completed simply by unloading the wire withdrawal knob. There is no need to find the wire end or cut the pull wire 40 in order to withdraw the pull wire 40, which improves the convenience of operation. When applied to the delivery device 1100 and the valve repair system 1000, it can improve surgical efficiency.

[0078] See also Figure 1 The second embodiment of the present invention provides a delivery device 1100. The delivery device 1100 can be used in interventional therapy to deliver implants such as artificial valves, stents, and valve clips 1200. In this embodiment, the delivery device 1100 includes a sheath 1130, an adjustable sheath 1110, a sheath bending handle 1120, and the valve clip control handle 100 provided in accordance with the first embodiment. The adjustable sheath 1110 is connected to the sheath bending handle 1120 and, under the control of the sheath bending handle 1120, bends in a set direction, thereby reaching a designated position through an interventional channel, such as a venous vessel, in the patient's body during surgery. The sheath 1130 is movably disposed within the adjustable sheath 1110, with the proximal end of the sheath 1130 connected to the valve clip control handle 100.

[0079] In this embodiment, the adjustable sheath 1110 is a hollow sheath tube with a bendable or maneuverable distal end. When not subjected to bending forces, the adjustable sheath 1110 is straight or nearly straight. For example, the adjustable sheath 1110 is provided with an adjustable bending section near the distal end. A control line in the sheath bending handle 1120 is connected to the adjustable bending section. Thus, the sheath bending handle 1120 can bend the distal end of the sheath bending handle 1120 by pulling the control line. Furthermore, the sheath 1130 is inserted into the adjustable sheath 1110 and can bend synchronously with the adjustable sheath 1110.

[0080] Please continue reading Figure 1 The embodiment of the third aspect of the present invention proposes a valve repair system 1000, which includes a valve clamp 1200 and a delivery device 1100 proposed according to the embodiment of the second aspect. The sheath 1130 of the delivery device 1100 is detachably connected to the valve clamp 1200 to deliver the valve clamp 1200.

[0081] Exemplarily, the delivery device 1100 includes two adjustable bending sheaths 1110, two sheath bending handles 1120, a sheath 1130 and a valve clamp control handle 100, the two adjustable bending sheaths 1110 are respectively a primary sheath 1111 and a secondary sheath 1112, the secondary sheath 1112 is passed through the primary sheath 1111, the two sheath bending handles 1120 are respectively cooperated with the primary sheath 1111 and the secondary sheath 1112, and are used to control the primary sheath 1111 and the secondary sheath 1112 to bend in a set direction; the sheath 1130 is passed through the secondary sheath 1112, the distal end of the sheath 1130 extends out of the secondary sheath 1112 and is detachably connected to the valve clamp 1200, and the proximal end of the sheath 1130 extends out of the secondary sheath 1112 and is connected to the valve clamp control handle 100.

[0082] When the valve repair system 1000 proposed in this embodiment is applied to a mitral valve repair surgery, the operator controls the primary sheath 1111 to reach a designated position in the patient's body through the established interventional channel by operating the sheath bending handle 1120. The secondary sheath 1112 extends from the primary sheath 1111 and drives the sheath 1130 and the valve clipper 1200 to the vicinity of the mitral valve. After adjusting the position, Figure 9 As shown, by rotating the driving knob 32 of the actuating wire control mechanism 30, the actuating wire 20 is driven to move toward the distal end, so that the clamping arm 1201 of the valve clamp 1200 is opened, and by pushing the control rod 51 of the pull wire control mechanism 50, the pull wire 40 is driven to move toward the proximal end, so that the capture arm 1202 of the valve clamp 1200 is opened and stays at a position where the valve can be captured, and then the control rod 51 is pushed toward the distal end to loosen the pull wire 40, thereby causing the capture arm 1202 to recover its deformation and rotate toward the clamping arm 1201, thereby completing the capture of the valve; the driving knob 32 is rotated in the reverse direction, as shown in FIG. Figure 10 As shown, the actuating wire 20 is driven to move toward the proximal end, so that the clamping arm 1201 is closed to complete the clamping; Figure 11 As shown, the two-way valve in the pull wire control mechanism 50 is opened, and the wire withdrawal knob is turned to withdraw the pull wire 40, separating the pull wire 40 from the valve clip 1200. The thumb screw 313 in the actuator wire control mechanism 30 is turned to unload the limit block 312, and the unloading knob 33 is turned to disengage the actuator wire 20 from the valve clip 1200. Finally, the primary sheath 1111, secondary sheath 1112, and sheath tube 1130 are withdrawn. During use, the valve repair system 1000 proposed in this embodiment allows the operator to complete actions such as delivering the valve clip, capturing the valve, clamping the valve, and separating and withdrawing the delivery device without the need for external tools. The system has a high degree of functional integration and is easy to operate.

[0083] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A valve clip control handle for controlling a valve clipper, wherein the valve clipper comprises a plurality of clamping arms and a plurality of capture arms that open and close relative to each other, and the valve clipper is connected to the distal end of a sheath, characterized in that: The valve clip control handle comprises: a housing, the distal end of which is connected to the sheath; an actuating wire, the actuating wire being axially movably disposed in the housing, the distal end of the actuating wire being threadably connected to the valve clipper via the sheath; an actuating wire control mechanism, the actuating wire control mechanism comprising a pressing wire assembly, a driving knob, and an unloading knob respectively connected to the actuating wire, the driving knob being configured to drive the actuating wire, the pressing wire assembly, and the unloading knob to move synchronously in the axial direction to open and close the clamping arm, and the unloading knob being configured to drive the actuating wire and the pressing wire assembly to rotate synchronously to disengage from the valve clipper; a pull line, the pull line being connectable to the capture arm via the sheath; A pull wire control mechanism is connected to the pull wire, and the pull wire control mechanism is configured to lock and pull the pull wire to open and close the capture arm under one working condition, and to drive the pull wire to disengage from the valve clipper under another working condition.

2. The valve clip control handle according to claim 1, characterized in that: The valve clip control handle further comprises a sheath fixing assembly, wherein the sheath fixing assembly is connected to the sheath and the housing respectively to prevent the sheath from moving.

3. The valve clip control handle according to claim 2, characterized in that: A sheath channel and a receiving cavity for installing the sheath fixing assembly are provided in the shell, the receiving cavity is located at the proximal end of the sheath channel and communicates with the sheath channel, and / or the sheath fixing assembly includes two snap-connected pressure rings.

4. The valve clip control handle according to claim 1, characterized in that: The shell is provided with a first sliding hole from the proximal end inward, the wire pressing assembly is at least partially slidably provided in the first sliding hole, the driving knob is threadedly connected to the proximal end of the first sliding hole and abuts against the proximal end of the wire pressing assembly, and the unloading knob is located on the proximal side of the driving knob.

5. The valve clip control handle according to claim 4, characterized in that: The wire pressing assembly includes a wire pressing column and a limit block, the limit block is detachably connected to the proximal side of the wire pressing column, the top of the shell is provided with a first slide groove connected to the first slide hole, the limit block is partially located in the first slide groove and can slide along the first slide groove.

6. The valve clip control handle according to claim 5, characterized in that: The limit block is provided with an indicator portion extending therefrom, and the housing is provided with a plurality of scale lines matched with the indicator portion.

7. The valve clip control handle according to claim 4, characterized in that: A sealed cavity is provided in the housing, the sealed cavity is located at the distal end side of the first sliding hole, and a guide hole for providing guidance for the actuating wire is provided in the sealed cavity.

8. The valve clip control handle according to claim 7, characterized in that: The actuating wire control mechanism also includes a wire tube for the actuating wire to pass through, the proximal end of the wire tube is inserted in the wire pressing assembly, the distal end of the wire tube is inserted in the sheath tube, and the part of the wire tube located in the sealing cavity is slidably set in the guide hole.

9. The valve clip control handle according to claim 1, characterized in that: The pulling wire control mechanism includes a control rod and a wire locking member and a wire withdrawing member installed on the control rod. At least one second sliding hole is provided in the housing, and the control rod is slidably disposed in the second sliding hole.

10. The valve clip control handle according to claim 9, characterized in that: The shell is provided with a second sliding groove and at least two limiting grooves connected to the second sliding hole, and the control rod is provided with a limiting protrusion, which is configured to slide in the second sliding groove according to the sliding of the control rod and cooperate with the limiting groove according to the rotation of the control rod.

11. The valve clip control handle according to any one of claims 1 to 10, characterized in that: The housing comprises a bottom shell and a top cover, and the bottom shell is buckled and connected to the top cover.

12. A conveying device, characterized in that: The delivery device includes a sheath, an adjustable bending sheath, a sheath bending handle, and a valve clip control handle according to any one of claims 1 to 11, the adjustable bending sheath is connected to the sheath bending handle, the sheath is movably arranged in the adjustable bending sheath, and the proximal end of the sheath is connected to the valve clip control handle.

13. A valve repair system, characterized in that: The valve repair system includes a valve clip and a delivery device according to claim 12, wherein a sheath of the delivery device is detachably connected to the valve clip for delivering the valve clip.

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