Sole tendineae implanting device

Abstract

The invention particularly relates to a chordae tendineae implanting device which comprises a capturing mechanism, an implanting assembly and a control mechanism. Wherein the capturing mechanism comprises a main body, a first part and a second part, the first part is rotatably arranged at the far end of the main body, the first part is provided with a first working position, when the first part is located at the first working position, a valve containing space is formed between at least part of the first part and the main body, and the second part is arranged in the main body in a penetrating mode; and the second part can extend out of the main body and clamp the heart valve together with the first part. An implant assembly is movably disposed inside the second component. The control mechanism is configured to be used for driving the far end of the implantation assembly to extend out of the second part and puncture and lock the heart valve so as to implant the artificial chordae tendineae to the heart valve. The chordae tendineae implanting device is simple in structure and convenient to operate, the outer diameter of a conveying system is reduced, and the problems that a conveying system of an existing chordae tendineae implanting device is complex, and the outer diameter is likely to be large are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a tendon chord implantation device. Background Art

[0002] Mitral regurgitation is one of the most common heart valve diseases today. The main causes are rheumatic heart disease, myxomatous degeneration of the mitral valve, ischemic heart disease, and myocardial disease. These diseases lead to pathological changes in the mitral valve annulus, leaflets, chordae tendineae, and papillary muscles, resulting in incomplete closure of the mitral leaflets. Surgery is an effective treatment for mitral regurgitation, but due to the significant trauma it causes, it carries a high risk of complications and mortality in elderly patients and those with multiple comorbidities.

[0003] Minimally invasive interventional surgery is now the preferred treatment for most heart diseases. Major interventional treatments include artificial chordal implantation, mitral annuloplasty, and mitral valve edge-to-edge repair. Implanting artificial chords on the native valve can effectively treat mitral regurgitation caused by chordal rupture and leaflet prolapse, while maintaining the physiological integrity of the mitral valve structure.

[0004] However, existing chordal implantation technology uses a spiral anchor to anchor one end of the prosthetic chordae to the valve leaflets and the other end to the ventricular wall. This spiral anchor causes significant damage to the valve leaflets and ventricular wall, and its spiral structure inevitably requires a large outer diameter for the delivery system, making it difficult to operate. The device can only implant one set of chordae at a time, and the puncture point is determined by the operator. Detection of anchorage to the valve leaflets relies primarily on ultrasound imaging, with no direct feedback on the mechanical structure. Summary of the Invention

[0005] The present invention aims to at least address the problem that the delivery system of existing chordal implants is complex and tends to result in a larger outer diameter. This objective is achieved through the following technical solutions:

[0006] The present invention provides a chordal implantation device for implanting artificial chordae tendineae into a heart valve, comprising:

[0007] A capture mechanism comprising a main body, a first component, and a second component. The first component is rotatably disposed at a distal end of the main body. The first component has a first working position. When the first component is in the first working position, a valve accommodating space is formed between at least a portion of the first component and the main body. The second component is disposed within the main body and is capable of protruding from the main body and clamping the heart valve together with the first component.

[0008] an implant component movably disposed within the interior of the second component;

[0009] A control mechanism is configured to drive the distal end of the implant component to extend out of the second component, puncture and lock the heart valve, so as to implant the artificial chordae tendineae on the heart valve.

[0010] The chordal implant device of the present invention includes a capture mechanism, an implant assembly, and a control mechanism. The capture mechanism includes a main body, a first component, and a second component. By rotatably setting the first component on the main body and movably setting the second component on the main body, the first component and the second component can be clamped and captured on the heart valve, and the control mechanism is used to drive the implant assembly to puncture and lock the heart valve, so that the artificial chordal tendon can be implanted on the heart valve. The chordal implant device has a simple structure and is easy to operate. It helps to reduce the outer diameter of the delivery system, thereby helping to solve the problem that the delivery system of the existing chordal implant device is complex and easily leads to a larger outer diameter.

[0011] In addition, the tendon chord implant device according to the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, the main body has a receiving cavity, the first component has a second working position, and when the first component is in the second working position, the first component is rotatably accommodated in the receiving cavity.

[0013] In some embodiments of the present invention, the main body includes a base and a pointed tip, the outer circumferential surface of the base is provided with a groove, the groove is communicated with the distal end of the base, and the pointed tip is provided at the distal end of the base and blocks the groove to form the receiving cavity;

[0014] The control mechanism includes a push rod, which is inserted into the base and has a distal end connected to the first component.

[0015] In some embodiments of the present invention, a first avoidance hole is provided on the first component, and when the first component is in the first working position, the second component can protrude from the main body and pass through the first avoidance hole.

[0016] In some embodiments of the present invention, the second component includes a rod, an elastic member, and a clamp connected in sequence along a first direction, wherein the first direction is a direction from the proximal end of the second component to the distal end of the second component;

[0017] The elastic member has a first compressed state. When the first component is in the first working position and the clamp abuts against the heart valve, the elastic member enters the first compressed state, so that the clamp and the first component jointly clamp the heart valve.

[0018] In some embodiments of the present invention, the main body has a capture channel communicating with the receiving cavity, and the second component is movably disposed in the capture channel;

[0019] Along the first direction, the capture channel includes a conveying part and a guide part arranged in sequence, the guide part is arranged at an angle to the conveying part, and when the first component is in the first working position, the axis of the guide part and the axis of the first avoidance hole are located in the same straight line.

[0020] In some embodiments of the present invention, the first component further has a second avoidance hole, and the second avoidance hole is spaced apart from the first avoidance hole;

[0021] When the first component is in the first working position, the portion of the implant component protruding from the second component is arranged at an angle to the second component and can pass through the second avoidance hole.

[0022] In some embodiments of the present invention, an outlet is provided on a side wall of the second straight segment, and along the first direction, the outlet is closer to the proximal end of the second component than to the distal end of the second component;

[0023] In the natural state, the axis of the outlet and the axis of the second avoidance hole are located on the same straight line.

[0024] In some embodiments of the present invention, the implant assembly comprises:

[0025] a piercing member, the piercing member being movably disposed inside the second component and having a delivery channel communicating a proximal end of the piercing member with a distal end of the piercing member;

[0026] An anchoring member is movably disposed in the delivery channel, and the artificial tendon is connected to the middle portion of the anchoring member.

[0027] In some embodiments of the present invention, there are two first components, and the two first components are arranged at intervals along the circumference of the main body. Each first component cooperates with one second component to clamp the heart valve, and one implant component is arranged inside each second component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0029] Figure 1 This is a schematic structural diagram of the chordal implant device in a delivery state according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 The structure diagram of the chordal implant device shown is in the second viewing angle;

[0031] Figure 3 is an exploded schematic diagram of the chordal implant device in an implanted state shown in an embodiment of the present invention;

[0032] Figure 4 for Figure 3 A schematic diagram of the partial structure of the chordal implant device shown;

[0033] Figure 5 for Figure 4 The schematic structural diagram of the local structure of the chordal implant device shown in another perspective;

[0034] Figure 6 for Figure 3 The schematic diagram of the structure of the chordae tendineae implant device successfully capturing the heart valve;

[0035] Figure 7 for Figure 3 Schematic diagram of the structure of the chordae tendineae implant device without capturing the heart valve;

[0036] Figure 8 for Figure 6 The schematic diagram of the structure of the chordae tendineae implant device piercing the heart valve is shown;

[0037] Figure 9 for Figure 6 The schematic diagram of the structure of the chordal implant device shown is a structure diagram of locking the artificial chordal tendon and the heart valve;

[0038] Figure 10 for Figure 9 Schematic diagram of the structure after the artificial chordae tendineae and heart valve are locked;

[0039] Figure 11 for Figure 3 The second component shown is a schematic structural diagram in a natural state;

[0040] Figure 12 for Figure 3 A schematic diagram of the connection structure of various components inside the main body shown;

[0041] Figure 13 for Figure 12 A schematic diagram of the partial structure of each component shown in FIG;

[0042] Figure 14 for Figure 1A schematic diagram of the connection structure of various components inside the main body shown;

[0043] Figure 15 for Figure 3 Schematic diagram of the connection structure of various components inside the main body shown.

[0044] The symbols in the accompanying drawings represent the following:

[0045] 1000. Chordal tendon implant device;

[0046] 100, capture mechanism; 200, implant component; 300, control mechanism;

[0047] 10. Main body; 1001. Accommodation cavity; 10011. Accommodation portion; 10012. Avoidance portion;

[0048] 11. Tip; 12. Base; 121. Groove; 122. Capture channel; 123. Control channel;

[0049] 20. First component;

[0050] 21. First plate; 22. Second plate;

[0051] 201, first avoidance hole; 202, second avoidance hole; 203, first mounting portion; 204, second mounting portion;

[0052] 30. Second component;

[0053] 301, first straight segment; 302, second straight segment; 303, exit; 304, guide structure;

[0054] 31. chuck; 32. elastic member; 33. rod;

[0055] 40. Puncture member; 401. Delivery channel;

[0056] 50. Anchors;

[0057] 60. Putting;

[0058] 70. Artificial chordae tendineae;

[0059] 80. Heart valves. DETAILED DESCRIPTION

[0060] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0061] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0062] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0063] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped over, an element described as "below" or "beneath" another element or feature would then be oriented "above" or "above" the other element or feature. Thus, the example term "below" can encompass both above and below orientations.

[0064] To more clearly describe the structure of this application, the terms "proximal" and "distal" are defined herein as commonly used in the field of interventional medicine. Specifically, "distal" refers to the end away from the operator during the surgical procedure, "proximal" refers to the end closer to the operator during the surgical procedure, "axial" refers to the length direction, and "radial" refers to the direction perpendicular to the "axial" direction.

[0065] like Figures 1-15As shown, the present invention proposes a chordal implantation device 1000 for implanting artificial chordae tendineae 70 into a heart valve 80, so as to solve the problem that the delivery system of the existing chordal implantation device 1000 is complex and easily leads to a larger outer diameter.

[0066] In terms of overall design, the chordal implant device 1000 comprises a capture mechanism 100, an implant assembly 200, and a control mechanism 300. The capture mechanism 100 comprises a main body 10, a first component 20, and a second component 30. The first component 20 is rotatably disposed at the distal end of the main body 10 and has a first working position. When the first component 20 is in the first working position, a valve-receiving space is formed between at least a portion of the first component 20 and the main body 10. The second component 30 is disposed within the interior of the main body 10 and is capable of protruding from the main body 10 and, together with the first component 20, clamping the heart valve 80. The implant assembly 200 is movably disposed within the second component 30. The control mechanism 300 is configured to drive the distal end of the implant assembly 200 to protrude from the second component 30, puncture, and lock the heart valve 80, thereby implanting the artificial chord 70 therein.

[0067] Specifically, by rotatably mounting the first component 20 on the main body 10 and movably mounting the second component 30 on the main body 10, the first component 20 and the second component 30 can clamp and capture the heart valve 80, and the control mechanism 300 drives the implant assembly 200 to puncture and lock the heart valve 80, thereby implanting the artificial chord 70 into the heart valve 80. The chord implant device 1000 has a simple structure, is easy to operate, and helps reduce the outer diameter of the delivery system, thereby resolving the problem of the existing chord implant device 1000 having a complex delivery system that easily leads to a larger outer diameter.

[0068] It should be understood that the capture mechanism 100 comprises a main body 10, a first component 20, and a second component 30. The distal end of the main body 10 is provided with a rounded head structure. In this case, the main body 10 is the distalmost component, and the rounded head structure facilitates smooth entry into the heart through the apical incision. Furthermore, other shapes with puncture capabilities, such as a cone, are also possible. Furthermore, the main body 10 is an overall cylindrical structure. Optionally, the cross-section of the main body 10 can also be other shapes besides a circle, and the smooth rounded corners of the main body 10 will not cause harm to the human body.

[0069] It should be noted that, in this embodiment, the main body 10 can be made of metal or polymer materials, such as stainless steel SUS316L, cobalt-chromium alloy, ABS, PEEK, etc.

[0070] like Figure 1-Figure 5As shown, the first component 20 is rotatably mounted on the main body 10 and disposed near the distal end of the first component 20. The first component 20 has a first working position and a second working position, and accordingly, the capture mechanism 100 has a delivery state and an implantation state. When the first component 20 is in the first working position, a valve-receiving space is formed between the first component 20 and the main body 10. In this state, the capture mechanism 100 is in the implantation state, enabling the artificial chordae tendineae 70 to be implanted into the heart valve 80. When the first component 20 is in the second working position, the first component 20 is in contact with the main body 10. In this state, the capture mechanism 100 is in the delivery state, enabling the main body 10 to pass through the apical incision and enter the heart.

[0071] It should be further understood that the main body 10 has a receiving cavity 1001, wherein a portion of the receiving cavity 1001 is communicated with the outer peripheral surface of the main body 10, and when the first component 20 is in the second working position, the first component 20 is rotatably accommodated in the receiving cavity 1001. Figure 12 As shown, the first component 20 includes a first plate 21 and a second plate 22, which are perpendicular to each other. Optionally, the cross-section of the first component 20 is L-shaped. At least a portion of the first plate 21 can be rotated outside the main body 10 and cooperates with the main body 10 to form the valve accommodating space described above. Specifically, the first component 20 is provided with a first mounting portion 203, which is located near the connection between the first plate 21 and the second plate 22 and is hingedly connected to the main body 10.

[0072] In this embodiment, the second plate 22 is located within the main body 10 and is connected to the control mechanism 300. A second mounting portion 204 is provided on the end of the second plate 22 facing away from the first plate 21. The second mounting portion 204 is hingedly connected to the push rod 60. The main body 10 is also provided with a control channel 123. The push rod 60 of the control mechanism 300 is located within the control channel 123. The distal end of the push rod 60 is hingedly connected to the first component 20 via the second mounting portion 204. Optionally, the push rod 60 is a round rod. Optionally, both the first mounting portion 203 and the second mounting portion 204 are configured as mounting holes.

[0073] like Figure 2-Figure 9As shown, the main body 10 is provided with a capture channel 122, which is in communication with the receiving cavity 1001. A second component 30 is movably provided inside the capture channel 122, and the distal end of the second component 30 can protrude out of the capture channel 122 and the receiving cavity 1001. The proximal end of the second component 30 is connected to a control mechanism 300, that is, the control mechanism 300 can control the movement of the second component 30 in the capture channel 122 and drive the second component 30 to protrude out of the receiving cavity 1001. When the first component 20 is in the first working position and a portion of the heart valve 80 protrudes into the valve receiving space, the portions of the first component 20 and the second component 30 protruding out of the capture channel 122 can cooperate to clamp the protruding portions of the heart valve 80, thereby achieving capture of the heart valve 80, so as to facilitate the subsequent puncture and locking of the implant assembly 200.

[0074] What needs to be further understood is that Figure 1 and Figure 3 As shown, the main body 10 includes a base 12 and a pointed tip 11. A groove 121 is provided on the outer circumference of the base 12, which is connected to the distal end of the base 12. The pointed tip 11 is disposed at the distal end of the base 12 and forms a receiving cavity 1001 with the groove 121. The configuration of the main body 10 with the base 12 and the pointed tip 11 facilitates the installation of the first component 20 and the articulation between the first component 20 and the push rod 60, thereby reducing the assembly difficulty of the chordal implant device 1000 and improving assembly efficiency and precision. Furthermore, a control channel 123 is provided within the base 12, and the push rod 60 is movably disposed within the control channel 123.

[0075] It should be noted that in this embodiment, the receiving cavity 1001 includes a receiving portion 10011 and a relief portion 10012 that are interconnected. The receiving portion 10011 communicates with the outer circumference of the main body 10, and the first mounting portion 203 is located at the connection between the receiving portion 10011 and the relief portion 10012. When the base 12 and the tip 11 are connected, the tip 11 can partially block the groove 121 to form the receiving portion 10011 and the relief portion 10012. Furthermore, the tip 11 and the main body 10 can be connected by welding, clamping, bonding, screwing, riveting, or plugging, among other methods.

[0076] It is understood that the implant assembly 200 is movably disposed within the second component 30, and the implant assembly 200 can extend out of the second component 30 and puncture the captured heart valve 80, and then lock the artificial chordae 70 with the heart valve 80, thereby achieving implantation of the artificial chordae 70 in the heart valve 80. The locking of the artificial chordae 70 with the heart valve 80 can be achieved by suturing, or by implanting a connecting component and implanting the artificial chordae 70 into the heart valve 80 along with the connecting component, without limitation.

[0077] At this time, in this embodiment, the control mechanism 300 is mainly used for the movement of the push rod 60 described below, the transportation of the second component 30, and the transportation of the anchor member 50 described below. Specifically, the existing control mechanism 300 can be used and no further restrictions are imposed here.

[0078] Furthermore, a first avoidance hole 201 is provided on the first component 20 . When the first component 20 is in the first working position, the second component 30 can extend out of the main body 10 and pass through the first avoidance hole 201 .

[0079] Specifically, by setting a first avoidance hole 201 on the first component 20, the second component 30 can pass through the first avoidance hole 201. At the same time, the second component 30 can cooperate with the first component 20 to clamp the heart valve 80, so that the chord implantation device 1000 can determine whether the chord implantation device 1000 has successfully captured the heart valve 80 based on the penetration depth of the second component 30 in the base 12, so that the chord implantation device 1000 has a reliable detection function.

[0080] It is important to understand that if Figure 6 As shown, when the first component 20 enters the first working position under the action of the control mechanism 300, a valve accommodating space is formed between the first component 20 and the base 12. At this time, when the heart valve 80 penetrates into the valve accommodating space, the second component 30 can move under the action of the control mechanism 300 and extend the main body 10 to abut against the heart valve 80, and then cooperate with the first plate body 21 of the first component 20 to clamp the heart valve 80, thereby achieving the capture of the heart valve 80. Optionally, a first avoidance hole 201 is provided on the first plate body 21. The first avoidance hole 201 is provided close to the second plate body 22. Since the second component 30 can penetrate through the first avoidance hole 201, at this time, the heart valve 80 needs to have a sufficient depth of penetration into the valve accommodating space to achieve the clamping of the heart valve 80. As shown Figure 7 As shown, when the heart valve 80 is probed to a small depth, the second component 30 can be probed out through the first avoidance hole 201, that is, the capture of the heart valve 80 fails. The structure is simple, the operation is convenient, the detection function is accurate, and the capture effect is excellent.

[0081] Furthermore, the second component 30 includes a rod 33, an elastic member 32, and a clamp 31 sequentially arranged along a first direction, wherein the first direction is a direction from the proximal end of the second component 30 to the distal end of the second component 30;

[0082] The elastic member 32 has a first compressed state. When the first component 20 is in the first working position and the clamp 31 abuts against the heart valve 80 , the elastic member 32 enters the first compressed state so that the clamp 31 and the first component 20 clamp the heart valve 80 together.

[0083] Specifically, by providing a second component 30 with an elastic member 32, it is possible to ensure that the second component 30 has a certain elastic space when capturing the heart valve 80. On the one hand, it helps to reduce the damage of the second component 30 to the heart valve 80 and protect the heart valve 80. On the other hand, it can better feel or determine whether the second component 30 is in contact with the heart valve 80, thereby improving the accuracy of detection.

[0084] It should be understood that, for ease of description, the direction from the proximal end of the second component 30 to the distal end of the second component 30 is referred to as the first direction. Along the first direction, the second component 30 includes a rod 33, an elastic member 32, and a clamp 31, which are sequentially arranged. The clamp 31 is used to abut against the heart valve 80. Optionally, the distal end of the clamp 31 is configured to be hemispherical or semi-elliptical. This configuration, on the one hand, ensures that the corners of the protruding portion of the second component 30 are rounded, will not cause harm to the human body, and is convenient for movement inside the heart; on the other hand, it facilitates the clamp 31 to smoothly enter the first avoidance hole 201, thereby reducing operational errors and improving detection efficiency.

[0085] like Figure 3 As shown, the chuck 31 is cylindrical in structure, and a hemispherical structure is provided at the distal end of the chuck 31. Meanwhile, the elastic member 32 is configured as a spring. The elastic member 32 is sleeved on the chuck 31, with one end connected to the hemispherical structure and the other end connected to the rod 33. In this state, the elastic member 32 is in a first compressed state. When the chuck 31 abuts the heart valve 80, the elastic member 32 enters the first compressed state, so that the chuck 31 and the first component 20 jointly clamp the heart valve 80. Optionally, the ends of the spring are welded to the distal ends of the chuck 31 and the rod 33, respectively. In this embodiment, the rod 33 is a circular tube structure, or the distal end of the rod 33 is provided with an insertion hole. In this case, a portion of the chuck 31 can be inserted into the rod 33, thereby achieving the installation and guidance of the chuck 31. This configuration provides a simple structure, and the movement direction of the chuck 31 is accurate, making it less likely to deviate or misalign, which helps ensure the accuracy and reliability of the capture.

[0086] Furthermore, along the first direction, the capture channel 122 includes a conveying portion and a guide portion arranged in sequence, the guide portion and the conveying portion are arranged at an angle, and when the first component 20 is in the first working position, the axis of the guide portion and the axis of the first avoidance hole 201 are located in the same straight line.

[0087] Specifically, by providing a guide portion on the capture channel 122, it helps to ensure that the rod body 33 protrudes from the capture channel 122. When the first component 20 is in the first working position, the axis of the protruding portion is in the same straight line as the axis of the first avoidance hole 201, thereby ensuring that the second component 30 can accurately enter the first avoidance hole 201.

[0088] It should be understood that, in the present embodiment, along the first direction, the capture channel 122 includes a conveying portion (not shown in the figure) and a guide portion (not shown in the figure) sequentially arranged, and the guide portion is arranged at an angle to the conveying portion. When the second component 30 is located inside the capture channel 122, the rod body 33 is in a conveying state, and the rod body 33 is in a vertical state due to the restriction of the conveying portion. When the second component 30 begins to capture the heart valve 80, when the first component 20 is in the first working position, the axis of the guide portion and the axis of the first avoidance hole 201 are located in the same straight line. At this time, the distal end of the rod body 33 protrudes out of the capture channel 122, and due to the guiding effect of the guide portion, the protruding portion of the rod body 33 is arranged at an angle to the portion located in the conveying portion. For ease of description, as shown in FIG. Figure 11 As shown, the portion of the rod body 33 located in the delivery portion is called the first straight segment 301, and the protruding portion of the rod body 33 is called the second straight segment 302. A second angle R2 is formed between the first straight segment 301 and the second straight segment 302, and at this time, the second straight segment 302 is arranged corresponding to the first avoidance hole 201 to facilitate clamping of the heart valve 80.

[0089] It should be noted that, in addition to using the guide portion to guide the second straight segment 302 into the first avoidance hole 201 , the rod body 33 can also be made into a memory metal part, and the recovery performance of the memory metal can be used to ensure that the second straight segment 302 can pass through the first avoidance hole 201 .

[0090] Furthermore, the first component 20 also has a second avoidance hole 202, which is spaced apart from the first avoidance hole 201, and when the first component 20 is in the first working position, the part of the implant component 200 that protrudes from the second component 30 is set at an angle to the second component 30 and can pass through the second avoidance hole 202.

[0091] Specifically, the provision of second avoidance hole 202 facilitates puncturing of the heart valve 80 by the implant assembly 200, thereby ensuring effective puncture of the implant assembly 200 and preventing the heart valve 80 from being pulled during the puncture process, which could result in leaflet tearing. Furthermore, the accuracy of the puncture is ensured, ensuring a successful puncture.

[0092] It is important to understand that if Figure 1 、 Figures 3 to 5 As shown, the second avoidance hole 202 is provided on the first plate 21 and is provided at one end of the second avoidance hole 202 away from the second plate 22. At this time, the second avoidance hole 202 is spaced apart from the first avoidance hole 201. Figure 8As shown, when the first component 20 is in the first working position and the second component 30 cooperates with the first component 20 to clamp the heart valve 80, the implant assembly 200 can extend out of the second component 30 and puncture the heart valve 80. In this embodiment, a puncture structure is provided at the distal end of the implant assembly 200 for passing through the second avoidance hole 202 and puncturing the heart valve 80.

[0093] It should be noted that in this embodiment, the diameter of the second avoidance hole 202 is larger than the diameter of the first avoidance hole 201, and the diameter of the second avoidance hole 202 is larger than the outer diameter of the implant assembly 200. This effectively ensures that the puncture of the implant assembly 200 can be effectively carried out. In addition, the edges of the first avoidance hole 201 and the second avoidance hole 202 are both provided with guide structures 304, i.e., rounded corners, to ensure the effectiveness of the use of the second component 30 and the implant assembly 200.

[0094] It needs to be further understood that a puncture channel is provided inside the rod body 33, and at the same time, an outlet 303 is provided on the side wall of the rod body 33, wherein the outlet 303 is connected to the puncture channel, and the outlet 303 is provided closer to the distal end of the rod body 33 than the proximal end of the rod body 33. At this time, when the second component 30 and the first component 20 jointly clamp the heart valve 80, the outlet 303 is located outside the capture channel 122. Optionally, the outlet 303 is provided on the second straight segment 302. When the second component 30 and the first component 20 jointly clamp the heart valve 80, the axis of the outlet 303 and the axis of the second avoidance hole 202 are located on the same straight line. Such a setting helps to ensure that the implant component 200 can effectively pass through the second avoidance hole 202 and perform a puncture action on the heart valve 80.

[0095] It should be noted that, in this embodiment, the axis of the outlet 303 is arranged at an angle to the axis of the second straight segment 302, and is also arranged at an angle to the axis of the first straight segment 301. In order to ensure the accuracy of the movement of the implant component 200, a guide surface can be provided near the outlet 303 so that the distal end of the implant component 200 can pass through the outlet 303 under the guidance of the guide surface. The specific structure thereof will not be described in detail here.

[0096] like Figure 9As shown, implant assembly 200 includes a puncture member 40 and an anchoring member 50. The puncture member 40 is movably disposed within the second component 30 and has a delivery channel 401 connecting the proximal end of the puncture member 40 with the distal end of the puncture member 40. In this embodiment, the distal end of the puncture member 40 is configured as a conventional puncture needle structure to ensure effective puncture. At the same time, the anchor 50 is in the shape of a long strip, and the anchor 50 is movably arranged in the delivery channel 401, connecting the artificial tendon 70 to the middle part of the anchor 50. After the anchor 50 is slowly pushed out of the puncture channel, the anchor 50 connected to the artificial tendon 70 will be in a vertical state with the puncture needle due to gravity and the tension of the artificial tendon 70, and the anchor 50 in this state cannot pass through the hole created by the puncture needle. At this time, after withdrawing the capture mechanism 100 and the puncture needle, pulling and tightening the artificial tendon 70 can make the anchor 50 fit and be fixed on the leaflet, thereby completing the locking action of the implant component 200.

[0097] like Figure 13 As shown, in this embodiment, the chordae tendineae implantation device 1000 can determine the distance between the second avoidance hole 202 and the first avoidance hole 201, that is, the distance L between the puncture point and the detection feedback point. At this time, the angle between the puncture needle and the second straight segment 302 is R1, that is, the angle at which the puncture needle extends from the rod body 33 after being pushed. Moreover, the length of the second straight segment 302 is L1, and the length between the bend of the implant assembly 200 and the puncture point (the second avoidance hole 202) is L2. In this way, the distance between the puncture point and the detection feedback point can be calculated. Therefore, it can be determined that the puncture point has a minimum distance L from the edge of the heart valve 80 .

[0098] It should be further understood that there are two first components 20, which are spaced apart along the circumference of the main body 10. Each first component 20 cooperates with a second component 30 to clamp the heart valve 80, and each second component 30 is internally provided with an implant assembly 200. By providing two first components 20, and correspondingly providing two second components 30 and two implant assemblies 200, the chord implant device 1000 can implant two sets of artificial chords 70 at a time, and the spacing between the two artificial chords 70 can be measured.

[0099] like Figure 14 and Figure 15As shown, when both first components 20 are in the second working position, that is, when the two second components 30 are respectively accommodated in the two receiving cavities 1001, the spacing between the two second avoidance holes 202 is D1, that is, the distance between the two center points to be punctured is D1, and the two push rods 60 are pushed respectively, so that the two first components 20 enter the first working position respectively. At this time, the first plates 21 of the two first components 20 cooperate to form part of the vertebral structure. At this time, the spacing between the two second avoidance holes 202 is D2, that is, the distance between the two puncture center points is D2. The length of D2 can be determined by combining the above formula, so by limiting the position of the puncture point, the spacing between the two sets of chordae tendineae implanted at the same time can be ensured to be accurate and calculable.

[0100] The chord implant device 1000 of this embodiment, by providing a puncture channel on the second component 30 and a delivery channel 401 on the puncture needle, helps reduce the manipulation channel of the artificial chord 70 during the implantation process, thereby helping to reduce the outer diameter of the capture mechanism 100 or the chord implant device 1000. It also has a simple structure and a few operating steps. At the same time, the chord implant device 1000 can also implant two sets of artificial chords 70 at a time and has a reliable detection structure to determine the accuracy of capture and implantation. In addition, the linkage structure of the puncture needle and the detection needle effectively ensures the stability of the puncture point position, thereby reducing the occurrence of damage to the valve leaflet.

[0101] 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 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 chordal implantation device for implanting artificial chordae tendineae into a heart valve, characterized in that: include: A capture mechanism comprising a main body, a first component, and a second component. The first component is rotatably disposed at a distal end of the main body. The first component has a first working position. When the first component is in the first working position, a valve accommodating space is formed between at least a portion of the first component and the main body. The second component is disposed within the main body and is capable of protruding from the main body and clamping the heart valve together with the first component. an implant component movably disposed within the interior of the second component; A control mechanism is configured to drive the distal end of the implant component to extend out of the second component, puncture and lock the heart valve, so as to implant the artificial chordae tendineae on the heart valve.

2. The chordal implant device according to claim 1, characterized in that: The main body has a receiving cavity, the first component has a second working position, and when the first component is in the second working position, the first component is rotatably accommodated in the receiving cavity.

3. The chordal implant device according to claim 2, characterized in that: The main body includes a base and a pointed tip, wherein a groove is provided on the outer peripheral surface of the base, the groove is communicated with the distal end of the base, and the pointed tip is provided at the distal end of the base and blocks the groove to form the receiving cavity; The control mechanism includes a push rod, which is inserted into the base and has a distal end connected to the first component.

4. The chordal implant device according to claim 2, characterized in that: The first component is provided with a first avoidance hole. When the first component is in the first working position, the second component can protrude from the main body and pass through the first avoidance hole.

5. The chordal implant device according to claim 4, characterized in that: The second component includes a rod body, an elastic member, and a clamp connected in sequence along a first direction, wherein the first direction is a direction from the proximal end of the second component to the distal end of the second component; The elastic member has a first compressed state. When the first component is in the first working position and the clamp abuts against the heart valve, the elastic member enters the first compressed state, so that the clamp and the first component jointly clamp the heart valve.

6. The chordal implant device according to claim 5, characterized in that: The main body has a capture channel communicating with the receiving cavity, and the second component is movably disposed in the capture channel; Along the first direction, the capture channel includes a conveying part and a guide part arranged in sequence, the guide part is arranged at an angle to the conveying part, and when the first component is in the first working position, the axis of the guide part and the axis of the first avoidance hole are located in the same straight line.

7. The chordal implant device according to claim 6, characterized in that: The first component further has a second avoidance hole, and the second avoidance hole is spaced apart from the first avoidance hole; When the first component is in the first working position, the portion of the implant component protruding from the second component is arranged at an angle to the second component and can pass through the second avoidance hole.

8. The chordal implant device according to claim 7, characterized in that: A puncture channel is provided inside the rod body, and an outlet is provided on the side wall of the rod body, which is connected to the puncture channel. The outlet is provided closer to the distal end of the rod body than the proximal end of the rod body, and when the second component and the first component jointly clamp the heart valve, the axis of the outlet and the axis of the second avoidance hole are located on the same straight line.

9. The chordal implant device according to claim 7, characterized in that: The implant assembly comprises: a piercing member, the piercing member being movably disposed inside the second component and having a delivery channel communicating a proximal end of the piercing member with a distal end of the piercing member; An anchoring member is movably disposed in the delivery channel, and the artificial tendon is connected to the middle portion of the anchoring member.

10. The chordal implant device according to any one of claims 1 to 9, characterized in that: There are two first components, and the two first components are spaced apart along the circumference of the main body. Each first component cooperates with one second component to clamp the heart valve, and one implant component is arranged inside each second component.

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