Sole tendineae implanting device

Abstract

The invention particularly relates to a chordae tendineae implanting device which comprises a capturing assembly with a base body, a first clamping piece and a second clamping piece, and the first end of the first clamping piece is pivotally connected with the base body. The second clamping piece is arranged on the side face, facing the base body, of the first clamping piece, the second clamping piece has a first state and a second state, and in the second state, the second clamping piece and the first clamping piece jointly clamp the valve. The first clamping piece is provided with a first position forming an angle with the base body and a second position driving the second clamping piece in the second state to abut against the base body, and when the first clamping piece is located at the first position, the second clamping piece can be switched between the first state and the second state. According to the chordae tendineae implanting device, through the matching structure of the base body, the first clamping piece and the second clamping piece, secondary clamping of a valve is achieved, and the problem that in the using process of an existing chordae tendineae implanting device, the valve is prone to slipping is solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and specifically to a chordae tendineae implantation device. Background Technology

[0002] Mitral regurgitation is one of the most common valvular heart diseases today. The main causes include rheumatic heart disease, mitral myxoid degeneration, ischemic heart disease, and cardiomyopathy, leading to lesions in the mitral valve structure, including the annulus, leaflets, chordae tendineae, and papillary muscles, resulting in the inability of the mitral valve leaflets to close completely. Surgical treatment is an effective method for treating mitral regurgitation; however, due to the significant trauma of surgery, it carries a higher risk of complications and mortality, especially in elderly patients and those with multiple comorbidities.

[0003] Currently, minimally invasive interventional surgery is a better option for treating most heart diseases. The main interventional treatments include artificial chordae tendineae implantation, mitral valve annulus repair, and mitral valve edge-to-edge repair. Among these, implanting artificial chordae tendineae on the valve leaflets can effectively treat mitral regurgitation caused by chordae tendineae rupture, leaflet prolapse, etc., while maintaining the physiological integrity of the mitral valve structure.

[0004] Existing chordae tendineae implantation devices mostly rely on the elastic deformation of the clamping arms to clamp the valve. However, this clamping method is limited by the elastic force of the clamping arm material and is easily affected by external forces, causing the valve to slip out. Summary of the Invention

[0005] The objective of this invention is to at least solve the problem of valve slippage that easily occurs during the use of existing chordae tendineae implantation devices. This objective is achieved through the following technical solution: This invention proposes a chordae tendon implantation device, including a capture component, the capture component comprising: Matrix; A first clamping member, the first end of which is pivotally connected to the base; The second clamping member is disposed on the side of the first clamping member facing the substrate. The second clamping member has a first state and a second state. In the first state, there is an accommodating space between the second clamping member and the first clamping member for the valve to enter. In the second state, the second clamping member and the first clamping member jointly clamp the valve. The first clamping member has a first position and a second position. In the first position, the first clamping member is set at an angle to the base, and the second clamping member can switch between the first state and the second state. In the second position, the first clamping member drives the second clamping member in the second state to press against the base.

[0006] The chordal tendinous implantation device of the present invention includes a capture assembly comprising a base, a first clamping member, and a second clamping member. By providing a pivotable first clamping member on the base and a second clamping member on the side of the first clamping member facing the base, the second clamping member has different first and second states. By switching between the first and second states, the valve can enter the receiving space between the first and second clamping members and be clamped and fixed by them. Then, by driving the first clamping member to pivot to a second position where the second clamping member presses against the base, a secondary clamping of the valve by the first clamping member and the base can be achieved. This effectively improves the clamping effect of the capture assembly on the valve, making it less prone to loosening and helping to solve the problem of valve slippage that easily occurs during the use of existing chordal tendinous implantation devices.

[0007] In addition, the tendon chord implantation device according to the present invention may also have the following additional technical features: In some embodiments of the present invention, the second clamping member is configured as an elastic member, the second clamping member having a fixed end and a movable end arranged oppositely, the fixed end being connected to the first clamping member, and the fixed end being closer to the first end than the second end of the first clamping member, the movable end being able to move closer to or away from the first end under the action of an external force.

[0008] In some embodiments of the present invention, the capturing component further includes: A first driving member is movably disposed on the base and drivenly connected to the first end. The second driving member is inserted through the base and connected to the second clamping member. The second driving member is used to drive the second clamping member to switch between the first state and the second state.

[0009] In some embodiments of the present invention, the substrate includes a main body portion and a clamping portion detachably disposed on the main body portion, wherein the first clamping member is pivotally disposed on the clamping portion.

[0010] In some embodiments of the present invention, the main body has a mounting groove, and at least a portion of the clamping portion is adapted to be received in the mounting groove; The tendon chord implantation device also includes a fixation member, which is movably disposed on the main body, and the distal end of the fixation member can extend into the mounting groove and press against the clamping part.

[0011] In some embodiments of the present invention, the first clamping member has a main body segment and a driving segment, the driving segment is arranged at an angle to the main body segment, a slot is provided at one end of the driving segment away from the main body segment, and a driving rod is provided at the distal end of the first driving member, the driving rod being adapted to be accommodated in the slot.

[0012] In some embodiments of the present invention, the chordae tendineae implantation device further includes a first rod body movably disposed inside the fixation member, at least a portion of the first rod body being capable of passing through the clamping portion and pressing against the drive section.

[0013] In some embodiments of the present invention, the chordae tendon implantation device further includes a second rod, the second rod being movably disposed inside the fixation member; The first rod is detachably disposed at the distal end of the second rod, and the clamping part has a locking structure that restricts the first rod from detaching from the base.

[0014] In some embodiments of the present invention, the locking structure is configured as an internal thread structure, and the first rod body is provided with an external thread adapted to the internal thread structure; The first rod and the second rod are fastened together, and the second rod is rotatable in the fixing member and can drive the first rod to rotate.

[0015] In some embodiments of the present invention, the second driving member includes a first part and a second part, the first part being disposed on the main body and connected to the second clamping member, and the second part being used to separate the first part from the second clamping member.

[0016] In some embodiments of the present invention, the chordae tendon implantation device further includes: A catheter, wherein the distal end of the catheter is provided with the capture component; The detection component includes a detection mechanism disposed on the substrate and a display control mechanism disposed at the proximal end of the catheter.

[0017] In some embodiments of the present invention, the detection mechanism includes: A detector having a mounting end pivotally connected to the substrate, and a detection end having a first limit position and a second limit position; A first traction member is disposed on the base and connected to the detector. The first traction member is used to drive the detector to pivot and move the detection end from the first extreme position to the second extreme position. In the direction from the proximal end toward the distal end, when the first clamping member is in the first position, the second end of the first clamping member is between the first extreme position and the second extreme position.

[0018] In some embodiments of the present invention, the number of the probes is two, and the two probes are respectively disposed on opposite sides of the first clamping member along the circumference of the conduit; And / or, the detection mechanism further includes a second traction member disposed on the base and connected to the detection end, the second traction member being used to drive the detection end to remain in the first extreme position.

[0019] In some embodiments of the present invention, the display control mechanism includes: A first component, which is connected to the substrate via the conduit; A second component is movably disposed on the first component and drivenly connected to the probe. The second component has a first operating state and a second operating state. In the first operating state, the second component is at least able to drive the probe to be held in the first limit position. In the second operating state, the probe is able to pivot on the substrate.

[0020] In some embodiments of the present invention, the first component has a receiving cavity communicating with the conduit and a movable groove communicating with the receiving cavity, the second component is disposed in the receiving cavity, and the second component has an operating part passing through the movable groove; And / or, the first component is provided with a limiting structure, the limiting structure being used to drive the second component to maintain the first working state; And / or, the first component is provided with a marking structure. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the chordae tendineae implantation device according to an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the internal structure of the capture component. Figure 3 for Figure 2 The diagram shows the internal structure of the capture component in another state; Figure 4 for Figure 3 The diagram shows a structure in which the first clamping member is in a first position and the second clamping member is in a first state. Figure 5 for Figure 3 The diagram shows a structure in which the first clamping member is in a first position and the second clamping member is in a second state. Figure 6 for Figure 3 The diagram shows a structure in which the first clamping member is in the second position and the second clamping member is in the second state. Figure 7 for Figure 3 The diagram shows the internal structure of the first rod pressing drive section of the capture assembly after clamping the valve; Figure 8 for Figure 7 The diagram shows a structure in which the fixing element is separated from the clamping part; Figure 9 for Figure 7 A schematic diagram of the structure of the second part of the second driving member separating from the first part and the second clamping member; Figure 10 for Figure 9 The diagram shows the internal structure of the capture component. Figure 11 for Figure 9 A schematic diagram of the valve fixation mechanism being released is shown in the figure. Figure 12 for Figure 11 A schematic diagram of the internal structure of the valve fixation mechanism when it is released; Figure 13 for Figure 4 The diagram shows a structure in which the detector detects successful clamping. Figure 14 for Figure 4 The diagram shows a structure where the detector detected a clamping failure. Figure 15 This is a schematic diagram of another structure of the detection mechanism shown in the embodiment of the present invention; Figure 16 for Figure 15 A partially enlarged structural diagram of A shown in the figure; Figure 17 for Figure 15 The diagram shows a structure in which the detector detects successful clamping. Figure 18 for Figure 15 The diagram shows a structure where the detector detected a clamping failure. Figure 19 for Figure 1 The diagram shows the structure of the display control mechanism. Figure 20 for Figure 19 The diagram shows the structure of the display control mechanism when the probe detects successful clamping; Figure 21 for Figure 19 The diagram shows the structure of the display control mechanism when the probe detects a clamping failure. Figure 22 for Figure 1 The diagram shows a structural schematic of the capture component disengaging from the valve fixation mechanism within the heart. Figure 23 for Figure 1 The diagram shows the connection between the anchoring components and valve fixation mechanism within the heart.

[0022] The markings in the attached diagram are as follows: 1000, chordae tendineae implantation device; 2000, ventricle; 2001, valve; 3000, chordae tendineae; 100. Capture assembly; 101. Valve fixation mechanism; 200. Control handle; 300. Catheter; 400. Probe assembly; 500. Anchoring component; 10. Base; 11. Main body; 110. Receiving cavity; 111. Mounting slot; 112. Assembly slot; 12. Clamping part; 121. Insertion slot; 122. Locking structure; 13. Fixing channel; 131. Wire hiding groove; 132. Wire winding groove; 20. First clamping element; 201. First end; 202. Second end; 21. Main body section; 22. Drive section; 221. Slotting; 23. First anti-detachment structure; 30. Second clamping component; 301. Fixed end; 302. Movable end; 31. Second anti-detachment structure; 41. First driving component; 411. Driving rod; 42. Second driving component; 421. First part; 422. Second part; 50. Fasteners; 60. Locking lever; 61. First lever body; 62. Second lever body; 70. Detection mechanism; 71. Detector; 72. First traction component; 721. Connecting rod; 722. Metal wire; 73. Second traction component; 80. Display control mechanism; 81. First component; 811. Receiving cavity; 812. Movable groove; 813. Marking structure; 814. Limiting structure; 82. Second component; 821. Operating part. Detailed Implementation

[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0024] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0025] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0026] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations.

[0027] It should be noted that the terms "distal" and "proximal" are used as directional terms, which are commonly used in the medical device field. "Distal" refers to the end furthest from the operator during surgery, while "proximal" refers to the end closest to the operator. Axial direction refers to the direction parallel to the line connecting the distal and proximal centers of the medical device; radial direction refers to the direction perpendicular to the aforementioned axial direction.

[0028] like Figure 1 , Figures 4 to 6 As shown, this embodiment proposes a chordae tendineae implantation device 1000 to solve the problem that the valve 2001 is prone to slippage during use in existing chordae tendineae implantation devices 1000.

[0029] In terms of overall design, the chordae tendineae implantation device 1000 includes a capture assembly 100, which includes a base 10, a first clamping member 20, and a second clamping member 30. The first end 201 of the first clamping member 20 is pivotally connected to the base 10. The second clamping member 30 is disposed on the side of the first clamping member 20 facing the base 10. The second clamping member 30 has a first state and a second state. In the first state, there is an accommodating space between the second clamping member 30 and the first clamping member 20 for the valve 2001 to enter. In the second state, the second clamping member 30 and the first clamping member 20 jointly clamp the valve 2001. Furthermore, the first clamping member 20 has a first position and a second position. In the first position, the first clamping member 20 is set at an angle to the base 10, and the second clamping member 30 can switch between the first state and the second state. In the second position, the first clamping member 20 drives the second clamping member 30, which is in the second state, to press against the base 10.

[0030] Specifically, by providing a pivotable first clamping member 20 on the base 10, and a second clamping member 30 on the side of the first clamping member 20 facing the base 10, the second clamping member 30 has different first and second states. By switching between the first and second states, the valve 2001 can enter the receiving space between the first clamping member 20 and the second clamping member 30 and be clamped and fixed by the first clamping member 20 and the second clamping member 30. Then, by driving the first clamping member 20 to pivot to the second position where the second clamping member 30 presses against the base 10, a secondary clamping of the valve 2001 by the first clamping member 20 and the base 10 can be achieved, thereby effectively improving the clamping effect of the capture assembly 100 on the valve 2001, making it less prone to loosening, and helping to solve the problem of valve 2001 slippage that easily occurs during use in existing chordae tendineae implantation devices 1000.

[0031] It is necessary to understand that, such as Figures 1 to 3As shown, the chordae tendineae implantation device 1000 includes a control handle 200, a catheter 300, and a capture assembly 100. The control handle 200 is connected to the capture assembly 100 via the catheter 300 and can control the capture assembly 100 to clamp and fix the valve 2001. Specifically, the control handle 200 is connected to the proximal end of the catheter 300. The control handle 200 is provided with a first control element (not shown in the figure) and a second control element (not shown in the figure). The first control element is kinetically connected to a first clamping element 20, and the second control element is kinetically connected to a second clamping element 30.

[0032] It should be noted that the control handle 200 can be an existing handle structure, as long as it can realize the pivoting of the first clamping member 20 and the state switching of the second clamping member 30. This application does not impose any restrictions on this.

[0033] In this embodiment, the catheter 300 is made of a flexible material to ensure the feasibility of implantation. Simultaneously, the catheter 300 is a multi-lumen tube, and the lumens are not interconnected to ensure that the pivoting control of the first clamping member 20 and the state switching control of the second clamping member 30 do not interfere with each other, thereby ensuring the control stability of the chordae tendineae implantation device 1000; it also provides an installation basis for the installation and movement of the fixation member 50.

[0034] like Figures 2 to 7 As shown, the capture assembly 100 includes a base 10, a first clamping member 20, and a second clamping member 30. In this embodiment, the base 10 is disposed at the distal end of the catheter 300, that is, the base 10 is located at the distal end of the chordal tendinous implantation device 1000. The end of the base 10 facing away from the catheter 300 (the distal end of the base 10) is configured as a hemispherical structure to avoid damage to the inner wall of the blood vessel during implantation of the capture assembly 100. Along the radial direction of the catheter 300, the maximum diameter of the base 10 does not exceed the outer diameter of the catheter 300 to ensure the flexibility of distal implantation of the chordal tendinous implantation device 1000.

[0035] In this embodiment, the base 10 is configured as a cylindrical structure, and a receiving cavity 110 is provided on the circumferential surface of the base 10. The first clamping member 20 is pivotally disposed in the receiving cavity 110. When the first clamping member 20 is pivotally rotated to the second position, the first clamping member 20 is accommodated in the receiving cavity 110. At this time, the maximum diameter of the capturing component 100 does not exceed the outer diameter of the conduit 300 along the radial direction of the conduit 300.

[0036] It should be noted that the capture component 100 can also be set in other positions of the chordae tendineae implantation device 1000, such as using a structure in which the catheter 300, the capture component 100 and the hemispherical pusher are arranged in sequence. Therefore, this application does not impose many restrictions on the setting position of the capture component 100.

[0037] Furthermore, the base 10 and the catheter 300 can be integrally molded to simplify the structure of the improved chordae tendineae implantation device 1000, reduce assembly steps, and improve assembly efficiency. The following description assumes that the base 10 and the catheter 300 are integrally molded, in which case the catheter 300 has multiple cavities communicating with the receiving cavity 110.

[0038] In some other embodiments, the substrate 10 and the conduit 300 can be configured as separate structures, that is, the substrate 10 and the conduit 300 are connected. The connection method can be one or more of welding, snap-fit, snap-fit ​​connection or screw connection. This application does not impose any restrictions on this. Such a configuration helps to reduce the manufacturing difficulty of the capture component 100 and reduce the manufacturing cost.

[0039] like Figure 9 and Figure 11 As shown, the first clamping member 20 is generally a plate-like or strip-like structure. The first clamping member 20 has a first end 201 and a second end 202 arranged in opposite directions, wherein the first end 201 is pivotally connected to the base 10. Specifically, a first pin hole (not shown in the figure) is provided at the distal end of the receiving cavity 110, and a second pin hole (not shown in the figure) is provided at the first end 201 of the first clamping member 20. The first clamping member 20 and the base are connected by a pin engagement, which is simple in structure and convenient and quick to assemble.

[0040] Since the first end 201 is pivotally connected to the base 10, the first clamping member 20 has a first position and a second position. When the first clamping member 20 is in the first position, it is angled to the base 10, meaning the second end 202 of the first clamping member 20 is outside the receiving cavity 110. In this case, the angle between the first clamping member 20 and the base 10 can be between 20° and 160°. Optionally, the angle between the first clamping member 20 and the base 10 can range from 45° to 80°. Simultaneously, when the first clamping member 20 is in the second position, both the first clamping member 20 and the second clamping member 30 are housed within the receiving cavity 110, meaning the second end 202 is located within the receiving cavity 110. In this case, the first clamping member 20 and the base 10 can have a near-parallel structure, or the first clamping member 20 can be fitted onto the base 10.

[0041] like Figure 2 and Figure 3As shown, the second clamping member 30 is disposed on the side of the first clamping member 20 facing the substrate 10. At this time, the second clamping member 30 has a first state and a second state. In the first state, there is an accommodating space between the second clamping member 30 and the first clamping member 20 for the valve 2001 to enter. In this embodiment, an accommodating space is formed between the second clamping member 30 and the first clamping member 20, and an opening communicating with the accommodating space is formed, so that the valve 2001 can enter the accommodating space through the opening. In the second state, the second clamping member 30 and the first clamping member 20 jointly clamp the valve 2001. Optionally, in the second state, there is a small gap between the second clamping member 30 and the first clamping member 20, so that the second clamping member 30 and the first clamping member 20 jointly clamp the valve 2001, thereby achieving the clamping and fixing of the valve 2001.

[0042] It is important to understand that during chordae tendineae 3000 implantation, the second clamping member 30 is in the second state, and the first clamping member 20 is in the second position. At this time, the maximum diameter of the capture assembly 100 along the radial direction of the catheter 300 does not exceed the outer diameter of the catheter 300. When the capture assembly 100 moves to the preset position, it drives the first clamping member 20 to pivot to the first position. At this time, the second clamping member 30 moves with the first clamping member 20 to the working position. Then, the second clamping member 30 is controlled to switch to the first state so that the valve 2001 can enter the receiving space between the first clamping member 20 and the second clamping member 30. Then, the second clamping member 30 is controlled to switch from the first state to the second state, and the first clamping member 20 is simultaneously controlled to pivot to the second position, so that the first clamping member 20 drives the second clamping member 30 to abut against the substrate 10, thereby realizing secondary clamping of the valve 2001, which can effectively improve the clamping effect of the capture assembly 100 on the valve 2001 and make it less likely to loosen.

[0043] It should be noted that when the capture component 100 moves to the preset position, the pivoting of the first clamping member 20 and the state switching of the second clamping member 30 can be performed simultaneously. For example, the first clamping member 20 can be pivoted to switch from the second state to the first state. The specific control method is not limited in this application.

[0044] In this embodiment, the second clamping member 30 is configured as an elastic member. Optionally, the second clamping member 30 is a nickel-titanium metal member. The second clamping member 30 is configured as a plate-like structure or a strip-like structure. The second clamping member 30 has a fixed end 301 and a movable end 302 arranged opposite to each other. The fixed end 301 is connected to the first clamping member 20 and is closer to the first end 201 than the second end 202 of the first clamping member 20, meaning the second clamping member 30 is arranged opposite to the first clamping member 20. Meanwhile, the movable end 302 can move closer to or further away from the first end 201 under external force. Optionally, in the second state, the movable end 302 can press against the first clamping member 20. Configuring the second clamping member 30 as an elastic member helps simplify the structure of the capture assembly 100, reduces the difficulty of switching the state of the second clamping member 30, and improves clamping efficiency.

[0045] Specifically, the fixed end 301 of the second clamping member 30 is configured with a U-shaped structure, and the fixed end 301 is connected to the first clamping member 20, such as... Figure 2 and Figure 3 As shown, the U-shaped structure allows the fixed end 301 of the second clamping member 30 to be elastically bent. In the first state, the second clamping member 30 and the first clamping member 20 cooperate to form a triangular accommodating space. Simultaneously, in the second state, a small gap is formed between the second clamping member 30 and the first clamping member 20 to clamp the valve 2001 located between them. Furthermore, when the second clamping member 30 switches from the second state to the first state, the fixed end 301 maintains a good connection with the first clamping member 20, effectively ensuring the feasibility of deformation of the second clamping member 30.

[0046] It should be noted that the connection between the fixed end 301 and the first clamping member 20 can be one of bonding, welding, snap-fitting, snap-fitting or screwing, and this application does not impose any restrictions on this.

[0047] In some other embodiments, the second clamping member 30 is configured as a rigid member and is generally a plate-shaped or strip-shaped structure. The fixed end 301 of the second clamping member 30 is connected to the first clamping member 20 via a pin or a pivot. At the same time, the second clamping member 30 is connected to the first clamping member 20 via a torsion spring. The cooperation between the torsion spring and the rigid member can also enable the second clamping member 30 to have the aforementioned first and second states.

[0048] What needs further understanding is, such as Figures 2-6As shown, the first clamping member 20 has a first anti-dislodgement structure 23 on its side facing the second clamping member 30, and the second clamping member 30 has a second anti-dislodgement structure 31 on its side facing the first clamping member 20. In this embodiment, the first anti-dislodgement structure 23 can be configured as a friction surface to increase the frictional force on the valve 2001 and prevent the valve 2001 from slipping out. Simultaneously, the first anti-dislodgement structure 23 can be configured as barbs, which, in conjunction with the friction surface, can further enhance the clamping effect of the capturing assembly 100 on the valve 2001.

[0049] It should be noted that the structures of the first anti-detachment structure 23 and the second anti-detachment structure 31 may be the same or different. Moreover, in addition to the above-mentioned combination structure of barbs and friction surfaces, other anti-detachment methods may be used, and this application does not impose any restrictions on them.

[0050] Still Figure 2 , Figure 3 , Figure 7 , Figure 10 and Figure 12 As shown, the capture assembly 100 also includes a first drive member 41 and a second drive member 42. The first drive member 41 is movably disposed on the base 10 and is connected to the first end 201. The second drive member 42 passes through the base 10 and is connected to the second clamping member 30. The second drive member 42 is used to drive the second clamping member 30 to switch between a first state and a second state. By setting the first drive member 41 and the second drive member 42, it is helpful to realize the controllability of the pivoting of the first clamping member 20 and the state switching of the second clamping member 30, which helps to improve the accuracy of the surgery and ensure the safety of the implantation surgery.

[0051] In this embodiment, the first clamping member 20 has a main body segment 21 and a driving segment 22, wherein the main body segment 21 has the first end 201 and the second end 202 described above. The driving segment 22 is disposed at the first end 201 of the main body segment 21 and is disposed at an angle to the main body segment 21. Optionally, the included angle between the driving segment 22 and the main body segment 21 is 90° to 160°. At the same time, a slot 221 is provided at the end of the driving segment 22 facing away from the main body segment 21. The first driving member 41 is inserted into one of the cavities of the conduit 300, and a driving rod 411 is provided at the distal end of the first driving member 41. The driving rod 411 extends radially along the conduit 300 and is adapted to be accommodated in the slot 221. This arrangement enables the driving rod 411 to be hinged to the first clamping member 20, which helps to control the pivoting of the first clamping member 20. On the other hand, this structure can provide a structural basis for separating the clamping part 12 of the base 10 from the main body 11, so as to avoid the connection between the driving rod 411 and the first clamping member 20 affecting the separation operation of the clamping part 12.

[0052] It should be noted that the transmission connection between the first driving member 41 and the first clamping member 20 can be considered only in terms of the transmission between the first driving member 41 and the first clamping member 20, without considering the separation of the first driving member 41 and the first clamping member 20. In this case, in addition to the above structure, other structures can also be used, such as achieving the hinge connection between the first driving member 41 and the first clamping member 20 through a rotating shaft. This application does not impose any restrictions on this.

[0053] In addition, in order to achieve the separation of the clamping part 12 from the main body part 11, other structures can be used besides the above structure, such as the hinged and separable connection between the first driving member 41 and the first clamping member 20 by the cooperation of multiple components. This application does not impose any restrictions on this.

[0054] Furthermore, the second driving member 42 includes a first part 421 and a second part 422. The first part 421 passes through the main body 11 and is connected to the second clamping member 30. The second part 422 is used to separate the first part 421 from the second clamping member 30.

[0055] Specifically, by setting the second driving member 42 as a first part 421 and a second part 422, and using the first part 421 to release the connection between the first part 421 and the second clamping member 30, the separation of the first part 421 and the second clamping member 30 can be achieved. On the one hand, the connection structure between the second driving member 42 and the second clamping member 30 can be simplified. On the other hand, it can also cooperate with the first driving member 41 mentioned above to provide a structural basis for the separation of the clamping part 12 and the main body part 11 of the base 10, and thus provide a structural basis for the implantation of multiple sets of tendineae 3000.

[0056] It should be understood that in this embodiment, the first part 421 is configured as a traction line, and the second part 422 is configured as a rod structure passing through the conduit 300. The first part 421 passes through one cavity of the conduit 300, the locking end of the first part 421 protrudes from the conduit 300 and passes through the movable end 302 of the second clamping member 30, and is detachably connected to the distal end of the second part 422. Optionally, as... Figure 7 , Figure 10 and Figure 12As shown, the distal end of the second part 422 is provided with a wire hole (not shown in the figure). The locking end of the first part 421 passes through the wire hole. When the second part 422 is housed in the conduit 300, the space between the second part 422 and the conduit 300 can effectively lock the traction wire to the conduit 300 (base 10). At this time, since the traction wire passes through the movable end 302 of the second clamping member 30, the state switching of the second clamping member 30 can be achieved by pulling the control end of the first part 421. When the distal end of the second part 422 protrudes from the conduit 300, neither the second part 422 nor the conduit 300 can lock the first part 421. By pulling the control end of the first part 421, the locking end of the first part 421 can be moved out of the wire hole and the movable end 302 of the second clamping member 30 in sequence, realizing the separation of the first part 421 and the second clamping member 30.

[0057] It should be noted that, in addition to the above-described structure, other structures can be used to connect the second driving member 42 and the second clamping member 30. If only the driving of the second driving member 42 to the second clamping member 30 is considered, the second driving member 42 can be set as a traction line, and one end of the traction line is tied to the second clamping member 30. If the separation of the clamping part 12 and the main body part 11 is considered, the second part 422 can be set as a cutting mechanism to cut the traction line, thereby realizing the separation of the first part 421 and the second clamping member 30. This application does not impose any restrictions on this.

[0058] Still Figures 2 to 12 As shown, the base 10 includes a main body 11 and a clamping part 12 detachably disposed on the main body 11, with a first clamping member 20 pivotally disposed on the clamping part 12. By configuring the base 10 as a detachable main body 11 and clamping part 12, and by disposing of the first clamping member 20 on the clamping part 12, the clamping part 12, the first clamping member 20, and the second clamping member 30 can be separated from the main body 11 (catheter 300) together. For ease of description, the clamping part 12, the first clamping member 20, and the second clamping member 30 are referred to as the valve fixation mechanism 101. With this configuration, for patients who require more than one set of chordae tendineae 3000 implantation, the chordae tendineae implantation device 1000 can be repeatedly assembled with the valve fixation mechanism 101. In other words, only one implantation instrument is needed during the operation to accommodate the implantation of multiple sets of chordae tendineae 3000, which helps improve surgical efficiency.

[0059] Specifically, the main body 11 has a mounting groove 111, which communicates with the aforementioned receiving cavity 110. At least a portion of the clamping part 12 is adapted to be accommodated in the mounting groove 111. The chordae tendineae implantation device 1000 also includes a fixing member 50, which is movably disposed on the main body 11. The distal end of the fixing member 50 can extend into the mounting groove 111 and press against the clamping part 12. By fixing the clamping part 12 by pressing with the fixing member 50, not only can the movement of the clamping part 12 be restricted in conjunction with the mounting groove 111, ensuring the installation and fixation of the clamping part 12, but also the distal end of the fixing member 50 can be driven to separate from the clamping part 12, thereby giving the clamping part 12 a basis for separation from the main body 11. In this embodiment, the mounting groove 111 extends radially along the conduit 300, and the opening of the slot 221 and the extension direction of the mounting groove 111 are located on the same plane and intersect, and the included angle between them is less than 90°. This arrangement can provide a structural basis for the subsequent separation of the separation part.

[0060] It needs to be further understood that the clamping part 12 has an insertion slot 121 adapted to the fixing member 50, such as Figure 7 , Figure 10 and Figure 12 As shown, an insertion groove 121 is provided on the top surface of the part of the clamping part 12 that extends into the mounting groove 111. At this time, the fixing member 50 can be inserted into the insertion groove 121 and press against the clamping part 12. This arrangement helps to further improve the installation and fixation of the clamping part 12 on the main body 11.

[0061] In this embodiment, the chordae tendineae implantation device 1000 further includes a locking rod 60. The locking rod 60 includes a first rod body 61, which is movably disposed inside the fixing member 50. At least a portion of the first rod body 61 can pass through the clamping portion 12 and press against the driving section 22. By allowing at least a portion of the first rod body 61 to pass through the clamping portion 12 and press against the driving section 22, self-locking of the first clamping member 20 on the clamping portion 12 can be achieved. This not only ensures the stability of the capture assembly 100 in clamping the valve 2001, but also ensures that the valve fixation mechanism 101 maintains good stability and clamping effect after the clamping portion 12 is disengaged from the main body 11, preventing slippage.

[0062] It should be noted that when the clamping part 12 is inserted into the mounting groove 111 and the fixing member 50 presses against the clamping part 12, the distal end of the first rod 61 can be driven to protrude out of the fixing member 50 and pass through the clamping part 12. At this time, by passing the distal end of the locking rod 60 through the clamping part 12, the clamping of the fixing member 50 can further improve the installation and fixation of the clamping part 12 on the main body 11.

[0063] It should be further understood that the locking lever 60 also includes a second lever 62, which is movably disposed inside the fixing member 50. The first lever 61 is detachably disposed at the distal end of the second lever 62, and the clamping part 12 has a locking structure 122 that restricts the first lever 61 from detaching from the base 10. By providing the second lever 62, the first lever 61 can be detached from the main body 11 (catheter 300) along with the valve fixing mechanism 101. That is, after the valve fixing mechanism 101 is released, the second lever 62 can also drive the first lever 61 to move, ensuring that the second lever 62 can accurately move to the locking position that abuts against the driving section 22. At the same time, by providing the locking structure 122 on the clamping part 12, it helps to prevent the first clamping member 20 from pivoting after the valve fixing mechanism 101 is detached from the main body 11 (catheter 300), ensuring the self-locking effect of the first clamping member 20 on the clamping part 12.

[0064] like Figures 2 to 12 As shown, the locking structure 122 is configured with an internal thread, and the first rod 61 has an external thread adapted to the internal thread. Simultaneously, the first rod 61 and the second rod 62 are engaged, with the second rod 62 rotatable within the fixing member 50 and capable of driving the first rod 61 to rotate. The threaded connection further enhances the locking effect of the second rod 62, ensuring the stability of the first clamping member 20's self-locking on the clamping part 12. Furthermore, the engagement of the first rod 61 and the second rod 62 ensures that the second rod 62 is rotatable within the fixing member 50 and can drive the first rod 61 to rotate.

[0065] In this embodiment, a first S-clasp is provided at the proximal end of the first rod 61, and a second S-clasp is provided at the distal end of the second rod 62. This arrangement not only enables the first rod 61 to be screwed to the clamping part 12 by the second rod 62, but also simplifies the ease of separation between the first rod 61 and the second rod 62. This, combined with the movement of the fixation member 50, the connection structure between the first driving member 41 and the first clamping member 20, and the connection structure between the second driving member 42 and the second clamping member 30, effectively ensures the ease of valve fixation mechanism 101 detaching from the main body 11 (catheter 300). At the same time, it also helps to simplify the structure of the capture assembly 100, reduce the difficulty of controlling valve fixation mechanism 101 to detach from the main body 11 (catheter 300), improve surgical efficiency, and ensure the safety of the surgery.

[0066] It is important to further understand that a fixing channel 13 is provided on the circumference of the main body 11, passing around the distal end of the main body 11, for accommodating the chordae tendineae 3000. Simultaneously, the chordae tendineae implantation device 1000 also includes an anchoring component 500, which is connected to the first clamping member 20 via the chordae tendineae 3000. By providing the fixing channel 13, the first clamping member 20 (valve fixation mechanism 101) and the anchoring component 500 can be connected via the chordae tendineae 3000. After the valve fixation mechanism 101 is released, the anchoring component 500 is inserted into the patient's body and fixes the chordae tendineae 3000 to the papillary muscle, thus completing the implantation of the chordae tendineae 3000.

[0067] like Figure 11 and Figure 12 As shown, the fixed channel 13 is disposed on the circumferential surface of the main body 11, specifically including a wire-concealing groove 131 extending axially along the guide tube 300, and a wire-winding groove 132 surrounding the distal end of the main body 11. The tendon cable 3000 can be adapted to be accommodated in the wire-concealing groove 131 and the wire-winding groove 132, and one end of the tendon cable 3000 is connected to the first end 201 of the first clamping member 20. In actual use, such as... Figure 22 and Figure 23 As shown, after the valve fixation mechanism 101 is released, the main body 11 (catheter 300) pulls the chordae tendineae 3000 out of the body, and the anchoring component 500 enters the patient's body and fixes the chordae tendineae 3000 to the papillary muscle, thereby completing the implantation of the chordae tendineae 3000.

[0068] It should be noted that the aforementioned anchoring component 500 can be an existing structure, and this application does not impose any restrictions on it.

[0069] In the existing chordae tendineae implantation device 1000, in addition to the problem of valve 2001 easily slipping out, it is also unable to provide an effective feedback mechanism for successful clamping. Therefore, it is impossible to determine whether valve 2001 is effectively clamped, which can easily lead to failures such as false clamping or mis-clamping.

[0070] like Figures 13 to 21 As shown, the chordae tendineae implantation device 1000 also includes a detection assembly 400, which includes a detection mechanism 70 disposed on the base 10 and a display control mechanism 80 disposed at the proximal end of the catheter 300. In this embodiment, the detection mechanism 70 is disposed on the main body 11, while the display control mechanism 80 is disposed on the control handle 200 and is kinetically connected to the detection mechanism 70. The arrangement of the detection mechanism 70 and the display control mechanism 80 enables external determination of whether the valve 2001 is effectively clamped, which helps to further improve the safety of the surgery.

[0071] Specifically, the detection mechanism 70 includes a detection element 71 and a first traction element 72. The detection element 71 has a mounting end pivotally connected to the base 10, and a detection end having a first limit position and a second limit position. In this embodiment, the detection element 71 is configured as a rod-shaped structure, and the mounting end of the detection element 71 is pivotally disposed in the assembly groove 112. The assembly groove 112 is connected to the distal end of the receiving cavity 110. Optionally, both the detection element 71 and the assembly groove 112 are provided with pin holes, and the detection element 71 and the assembly groove 112 are connected by a pin engagement. Along the circumference of the guide tube 300, the mounting end is spaced apart from the first end 201 of the first clamping member 20. At this time, the detection end of the detection element 71 has a first limit position and a second limit position due to the rotation of the detection element 71.

[0072] like Figures 13 to 14 As shown, the first traction member 72 is disposed at the distal end of the main body 11 and connected to the detector 71. In this embodiment, the first traction member 72 is configured as an elastic member, optionally a spring, with one end connected to the distal end of the main body 11 and the other end connected to the mounting end of the detector 71. The first traction member 72 has a compressed state capable of driving the detector 71 to pivot, and at this time, the compressed state enables the detection end to move from a first limit position to a second limit position.

[0073] It is important to understand that, from the proximal end to the distal end, when the first clamping member 20 is in the first position, the second end 202 of the first clamping member 20 is between the first extreme position and the second extreme position. That is, when the first clamping member 20 is in the first position, the probe 71 pivots. If the detection end of the probe 71 can move from the first extreme position to the second extreme position, it can be determined that the clamping area of ​​the capture assembly 100 on the valve 2001 is insufficient, or that the valve 2001 has failed to be clamped. If the probe 71 fails to reach the second extreme position during the pivoting process due to the obstruction of the valve 2001, it can be determined that the valve 2001 has been successfully clamped.

[0074] It should be further understood that the detection mechanism 70 also includes a second traction member 73, which is disposed on the base 10 and connected to the detection end. The second traction member 73 is used to drive the detection end to remain in the first extreme position. In this embodiment, the second traction member 73 is a traction line, and one end of the second traction member 73 is connected to the detection end, while the other end is connected to the display control mechanism 80 located on the control handle 200. By pulling the second traction member 73, the detection end can be kept in the first extreme position.

[0075] In some other embodiments, the second traction member 73 may be configured as a rod. The second traction member 73 is disposed in the conduit 300 and is connected to the mounting end of the probe 71. In this case, the probe 71 can be pivoted by moving the second traction member 73. The connection method between the second traction member 73 and the probe 71 can refer to the connection method between the first clamping member 20 and the first driving member 41 described above. This application will not describe it in detail here.

[0076] like Figures 15 to 18 As shown, in some embodiments, the first traction member 72 includes a connecting rod 721 and a metal wire 722. One end of the connecting rod 721 is hinged to the detection end of the detector 71, and the hinge method can refer to the connection method of the mounting end described above. The other end of the connecting rod 721 is connected to the metal wire 722 passing through the conduit 300. Optionally, the metal wire 722 is made of nickel-titanium metal, i.e., shape memory metal. The metal wire 722 is inserted into the mounting hole of the connecting rod 721, and the connection method can be crimping, bonding, etc. At this time, the first traction member 72 can drive the detection end to remain in the first extreme position, and can also move the detection end from the first extreme position to the second extreme position.

[0077] It should be further understood that there are two detectors 71, and along the circumference of the conduit 300, the two detectors 71 are respectively located on opposite sides of the first clamping member 20. Having two detectors 71, respectively located on opposite sides of the first clamping member 20, helps to further improve the accuracy of detection.

[0078] like Figures 19 to 21 As shown, the display control mechanism 80 includes a first component 81 and a second component 82. The first component 81 is connected to the base 10 through a conduit 300. The second component 82 is movably disposed on the first component 81 and is connected to the detector 71 in a transmission manner. This allows the second component 82 to have a first working state and a second working state. In the first working state, the second component 82 can at least drive the detector 71 to be held in a first limit position. In the second working state, the detector 71 can pivot on the base 10.

[0079] Specifically, by setting a first component 81 and a second component 82, and movably setting the second component 82 on the first component 81 and drivingly connecting it to the probe 71, the pivoting state of the probe 71 can be determined by the movement of the second component 82 on the first component 81, thereby determining the clamping state of the valve 2001.

[0080] It is understandable that the display control mechanism 80 can be mounted on the control handle 200 and connected to the catheter 300 via the control handle 200, thus improving the convenience of the surgery. Alternatively, the display control mechanism 80 can be connected separately to the catheter 300 to achieve independent control of the detection component 400 and the capture component 100, which helps to improve the applicability of the chordae tendineae implantation device 1000. Alternatively, the display control mechanism 80 can be organically combined with the control handle 200, that is, the display control mechanism 80 includes a first component 81 and a second component 82, wherein the first component 81 is configured as the control handle 200.

[0081] In this embodiment, the display control mechanism 80 is connected to the catheter 300 via a control handle 200. The display control mechanism 80 includes a first component 81 and a second component 82. The first component 81 has a receiving cavity 811 communicating with the catheter 300 and a movable groove 812 communicating with the receiving cavity 811. The second component 82 is disposed in the receiving cavity 811 and has an operating part 821 passing through the movable groove 812. The second component 82 is connected to the detection element 71 via the aforementioned second traction member 73. At this time, by driving the operating part 821 to move in the movable groove 812, the pivoting or pivoting start of the detection element 71 can be effectively controlled, and the pivoting status of the detection element 71 can be fed back through the movement effect of the operating part 821 in the movable groove 812, thereby determining whether the valve 2001 is effectively clamped.

[0082] like Figure 1 , Figures 19 to 21 As shown, the first component 81 is configured as a circular tube structure. The receiving cavity 811 of the first component 81 is connected to the conduit 300 through the inner cavity of the control handle 200. A movable groove 812 extending axially along the tube body is provided on the circumferential surface of the first component 81, and the movable groove 812 penetrates the first component 81 and communicates with the receiving cavity 811. Meanwhile, the second component 82 is adapted to be housed in the receiving cavity 811, and the second component 82 has an operating part 821 extending through the movable groove 812 to the outside of the first component 81. This configuration is simple in structure and facilitates operation and observation.

[0083] In this embodiment, the number of movable slots 812 is set to at least one. When there is one movable slot 812, the second component 82 is set to an L-shaped structure. When there are two movable slots 812, and the two movable slots 812 are spaced apart along the circumference of the first component 81, the second component 82 is set to a T-shaped structure.

[0084] It should be noted that in some other embodiments, the second component 82 is rotatably disposed on the first component 81. For example, the second component 82 is fixed to the first component 81 by a threaded connection, and the second traction member 73 is operated by rotation, thereby realizing the switching between the first working state and the second working state. In addition, the movement of the first component 81 on the second component 82 can also be implemented in other ways, which will not be described in detail in this application.

[0085] It is important to further understand that a limiting structure 814 is provided on the first component 81, which is used to drive the second component 82 to maintain a first working state. In this embodiment, along the axial direction of the tube, one end of the movable groove 812 extends to the distal end of the first component 81, and the distal end face of the first component 81 is the limiting structure 814. When the operating part 821 is moved to the distal end of the first component 81, that is, after the operating part 821 disengages from the movable groove 812, the second component 82 can rotate within the first component 81. At this time, the second component 82 can rotate and drive the operating part 821 to abut against the distal end face of the first component 81, thereby realizing the limitation of the second component 82 by the limiting structure 814, so as to achieve the purpose of driving the second component 82 to maintain a first working state.

[0086] Still Figures 19 to 21 As shown, a marking structure 813 is provided on the first component 81. In this embodiment, the marking structure 813 is provided on the circumferential surface of the first component 81. Optionally, two marking structures 813 are provided, and the two marking structures 813 are spaced apart along the direction from the proximal end to the distal end of the first component 81. The two marking structures 813 are used to mark capture failure and clamping success, respectively. The setting of the marking structure 813 can further improve the convenience and accuracy of the feedback of the display control mechanism 80, thereby improving the use effect of the chordae tendon implantation device 1000.

[0087] like Figures 1 to 4 As shown, in actual use, the chordae tendineae implantation device 1000 is first implanted into the ventricle 2000. At this time, the second clamping member 30 is in the second state, and the first clamping member 20 is in the second position. At the same time, the operating part 821 abuts against the distal end face of the first component 81, that is, the second component 82 is maintained in the first working state, and the probe 71 is maintained in the first extreme position. When the capture component 100 moves to the preset position, the control handle 200 drives the first driving member 41 to move from the proximal end to the distal end, thereby driving the first clamping member 20 to pivot to the first position. At this time, the control handle 200 drives the first part 421 (traction line) of the second driving member 42 to keep it taut, and controls the second clamping member 30 to enter the first state from the second state.

[0088] like Figures 4 to 6As shown, after the first clamping member 20 supports the valve 2001, the first part 421 (traction line) is released. Driven by the fixed end 301 (U-shaped structure), the second clamping member 30 moves from the first state to the second state, thereby causing the movable end 302 of the second clamping member 30 to move towards the first clamping member 20, thus achieving clamping of the valve 2001 by the first clamping member 20 and the second clamping member 30. Due to the provision of the first anti-dislodgement structure 23 (friction surface) and the second anti-dislodgement structure 31 (barbs), the valve 2001 is effectively prevented from slipping.

[0089] Then, as Figure 5 , Figures 19 to 21 As shown, the second component 82 is rotated so that the operating part 821 of the second component 82 is screwed into the movable groove 812. At this time, the second traction member 73 is in a relaxed state, and under the action of the spring force of the first traction member 72, the detection end of the detection member 71 moves from the first limit position to the second limit position, that is, it makes a downward closing motion (arrow direction x in the figure). At the same time, the second traction member 73 drives the second component 82 to slide on the first component 81. If valve 2001 is successfully clamped, as Figure 13 As shown, the probe 71 stops when it pivots to contact the valve 2001, i.e., its movement is restricted. At this time, the operating part 821 of the second component 82 slides to the marking structure 813 of the first component 81 indicating successful clamping, so as to prompt the operator that the valve 2001 has been successfully clamped and the next operation can be carried out. If the clamping area of ​​valve 2001 is insufficient, such as Figure 14 As shown, if valve 2001 fails to be clamped, the movement of probe 71 is restricted only when it pivots to the second limit position. At this time, operation part 821 slides to the marking structure 813 of the first component 81 indicating clamping failure to prompt the operator that valve 2001 clamping failure has occurred. At this time, operation part 821 should be driven to move to the distal plane of the first component 81 and valve 2001 clamping operation should be performed again.

[0090] After the detection component 400 indicates that the valve 2001 has been successfully clamped, the detection end of the reset detection component 71 moves to the first limit position. This drives the first driving component 41 to move from the distal end to the proximal end. At this time, the first clamping component 20 drives the second clamping component 30 to pivot and abut against the clamping part 12, that is, the valve 2001 closes (after the valve 2001 closes, the detection component 71 can still be released to detect whether the valve 2001 is still effectively clamped).

[0091] Then, as Figure 2 and Figure 7As shown, the second rod 62 is driven to move from the proximal end to the distal end, pushing the first rod 61 to the mating point of the internal and external threads. Then, the second rod 62 is rotated, and through the S-locking engagement, the first rod 61 is driven to rotate, and threaded engagement with the clamping part 12 is achieved.

[0092] Under the action of threaded tight fit, the first rod 61 abuts against the drive section 22 of the first clamping member 20, so that the first clamping member 20 completely fixes the valve 2001 between the second clamping member 30. At this time, the force of clamping the valve 2001 is further strengthened by the rebound force of the initially fixed second clamping member 30 into the threaded locking force between the first clamping member 20 and the clamping part 12, that is, secondary clamping.

[0093] Finally, as Figures 8 to 10 , Figure 22 As shown, the fixing member 50 is driven to move from the distal end to the proximal end, releasing the restriction of the fixing member 50 on the clamping part 12. At this time, the clamping part 12 can be released. While releasing the clamping part 12, the first rod 61 and the second rod 62 can be connected without restriction. At the same time, the second part 422 moves from the proximal end to the distal end, releasing the first part 421 fixed on the wire hole of the second part 422, thereby realizing the release of the entire valve fixation mechanism 101.

[0094] It should be noted that for patients who have received more than one set of chordae tendineae 3000 implanted, the valve fixation mechanism 101 can be reassembled intraoperatively. First, the chordae tendineae 3000 are fixed in the instrument via the winding groove 132 and the concealed groove 131 of the main body 11. Then, the first S-clasp of the first rod 61 is fitted onto the second S-clasp of the second rod 62, and simultaneously, the opening of the first clamping member 20 is engaged into the drive rod 411 of the first drive member 41. Next, the fixation member 50 moves from the proximal end to the distal end and is inserted into the insertion groove 121 of the clamping part 12, thereby fixing the clamping part 12 onto the main body 11.

[0095] Next, under the constraint of the fixing member 50, the second rod 62 is controlled to rotate and move in the direction from the far end to the near end. Through the cooperation of the first S-clamp and the second S-clamp, the first rod 61 is driven to move upward, thereby releasing the restriction of the first rod 61 on the first clamping member 20. Finally, the first part 421 of the second traction member 73 is passed through the wire holes of the first clamping member 20 and the second part 422 in sequence. Then, the second part 422 moves with one end of the first part 421 and is inserted into the catheter 300, so that the first part 421 is fixed on the second clamping member 30, thereby completing the assembly of the new valve fixation mechanism 101 and the new artificial chordae tendineae 3000 implantation operation can continue.

[0096] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A chordae tendineae implantation device, characterized in that, Includes a capture component, the capture component comprising: Matrix; A first clamping member, the first end of which is pivotally connected to the base; The second clamping member is disposed on the side of the first clamping member facing the substrate. The second clamping member has a first state and a second state. In the first state, there is an accommodating space between the second clamping member and the first clamping member for the valve to enter. In the second state, the second clamping member and the first clamping member jointly clamp the valve. The first clamping member has a first position and a second position. In the first position, the first clamping member is set at an angle to the base, and the second clamping member can switch between the first state and the second state. In the second position, the first clamping member drives the second clamping member in the second state to press against the base.

2. The chordae tendineae implantation device according to claim 1, characterized in that, The second clamping member is configured as an elastic member. The second clamping member has a fixed end and a movable end arranged opposite to each other. The fixed end is connected to the first clamping member and is closer to the first end than the second end of the first clamping member. The movable end can move closer to or away from the first end under the action of external force.

3. The chordae tendineae implantation device according to claim 1, characterized in that, The capture component also includes: A first driving member is movably disposed on the base and drivenly connected to the first end. The second driving member is inserted through the base and connected to the second clamping member. The second driving member is used to drive the second clamping member to switch between the first state and the second state.

4. The chordae tendineae implantation device according to claim 3, characterized in that, The substrate includes a main body and a clamping part detachably disposed on the main body, wherein the first clamping member is pivotally disposed on the clamping part.

5. The chordae tendineae implantation device according to claim 4, characterized in that, The main body has a mounting groove, and at least a portion of the clamping part is adapted to be received in the mounting groove; The tendon chord implantation device also includes a fixation member, which is movably disposed on the main body, and the distal end of the fixation member can extend into the mounting groove and press against the clamping part.

6. The chordae tendineae implantation device according to claim 5, characterized in that, The first clamping member has a main body segment and a driving segment. The driving segment is set at an angle to the main body segment. A slot is provided at one end of the driving segment away from the main body segment. A driving rod is provided at the far end of the first driving member. The driving rod is adapted to be accommodated in the slot.

7. The chordae tendineae implantation device according to claim 6, characterized in that, The chordae tendon implantation device further includes a first rod body movably disposed inside the fixation member, at least a portion of the first rod body being able to pass through the clamping portion and press against the drive section.

8. The chordae tendineae implantation device according to claim 7, characterized in that, The chordae tendon implantation device further includes a second rod, which is movably disposed inside the fixation member; The first rod is detachably disposed at the distal end of the second rod, and the clamping part has a locking structure that restricts the first rod from detaching from the base.

9. The chordae tendineae implantation device according to claim 8, characterized in that, The locking structure is configured as an internal thread structure, and the first rod body is provided with an external thread that is compatible with the internal thread structure. The first rod and the second rod are fastened together, and the second rod is rotatable in the fixing member and can drive the first rod to rotate.

10. The chordae tendineae implantation device according to claim 4, characterized in that, The second driving member includes a first part and a second part. The first part passes through the main body and is connected to the second clamping member. The second part is used to separate the first part from the second clamping member.

11. The chordae tendon implantation device according to any one of claims 1-10, characterized in that, The chordae tendon implantation device also includes: A catheter, wherein the distal end of the catheter is provided with the capture component; The detection component includes a detection mechanism disposed on the substrate and a display control mechanism disposed at the proximal end of the catheter.

12. The chordae tendineae implantation device according to claim 11, characterized in that, The detection mechanism includes: A detector having a mounting end pivotally connected to the substrate, and a detection end having a first limit position and a second limit position; A first traction member is disposed on the base and connected to the detector. The first traction member is used to drive the detector to pivot and move the detection end from the first extreme position to the second extreme position. In the direction from the proximal end toward the distal end, when the first clamping member is in the first position, the second end of the first clamping member is between the first extreme position and the second extreme position.

13. The chordae tendon implantation device according to claim 12, characterized in that, The number of the detectors is two, and the two detectors are respectively arranged on opposite sides of the first clamping member along the circumference of the conduit; And / or, the detection mechanism further includes a second traction member disposed on the base and connected to the detection end, the second traction member being used to drive the detection end to remain in the first extreme position.

14. The chordae tendineae implantation device according to claim 12, characterized in that, The display control mechanism includes: A first component, which is connected to the substrate via the conduit; A second component is movably disposed on the first component and drivenly connected to the probe. The second component has a first operating state and a second operating state. In the first operating state, the second component is at least able to drive the probe to remain in the first limit position. In the second operating state, the probe is able to pivot on the substrate.

15. The chordae tendineae implantation device according to claim 14, characterized in that, The first component has a receiving cavity communicating with the conduit and a movable groove communicating with the receiving cavity; the second component is disposed in the receiving cavity and has an operating part passing through the movable groove. And / or, the first component is provided with a limiting structure, the limiting structure being used to drive the second component to maintain the first working state; And / or, the first component is provided with a marking structure.

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