Heart valvuloplasty ring implantation assembly

Abstract

The utility model relates to the technical field of medical apparatus and instruments, in particular to a heart valve forming ring implantation assembly which comprises a forming ring body which comprises an annular main body arranged in a chain type structure. The ring holder comprises a ring holding part, the ring holding part comprises a shell and a ring holding sleeve piece movably arranged at the lower end of the shell, the ring holding sleeve piece comprises a limiting block, a movable connecting part arranged at the upper end of the limiting block and a plurality of supporting rods arranged on the periphery of the lower end of the limiting block, and ring holding pieces are arranged at the tail ends of the supporting rods. The shell is provided with an operation assembly; and when the movable connecting part moves downwards, the plurality of supporting rods drive the ring holding piece to extend outwards. The forming ring can be adapted to forming ring bodies with various sizes; expansion of the valve ring cannot be caused, and the influence of the annular body on the valve ring in the contraction period is eliminated; the operation is simple and fast; a doctor can observe and use the device conveniently, more operation visual fields are provided, and the device is more suitable for small incision operations.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a heart valve annuloplasty implantation assembly. Background Technology

[0002] In artificial heart valve annuloplasty, the observation of changes in the shape and position of the valve leaflets is a crucial factor affecting surgical quality. However, the handle connection area of ​​the artificial heart valve annuloplasty ring holder may obstruct the surgeon's field of vision, becoming a blind spot, making it difficult for the surgeon to observe and adjust the anterior leaflet, thus affecting the surgical outcome. Artificial heart valve annuloplasty rings are made of a metal frame, silicone, polyester thread, and polyester fabric. For most patients requiring heart valve repair, artificial heart valve annuloplasty rings are surgically implanted. During the procedure, the surgeon uses the artificial heart valve annuloplasty ring holder to grasp the annuloplasty ring and suture it to the human tissue.

[0003] During the systolic and diastolic cycles of the heart, unidirectional blood flow is achieved through four heart valves: the mitral valve, tricuspid valve, aortic valve, and pulmonary valve. When the mitral and tricuspid valves close, the aortic and pulmonary valves open, allowing blood from the left ventricle to flow into the aorta while preventing backflow of blood from the ventricle into the atrium. Therefore, the mitral and tricuspid valves act as one-way valves. Taking the mitral valve as an example, when the mitral valve is diseased, the leaflets cannot close completely, and the valve annulus dilates, both of which cause blood to flow back from the left ventricle into the left atrium. Mitral regurgitation can decrease stroke volume and ejection fraction, leading to a significant increase in left ventricular end-diastolic volume and pressure. This can cause pulmonary hypertension and heart failure, ultimately resulting in death.

[0004] The most common treatment for mitral regurgitation is valvular repair surgery. Under cardiopulmonary bypass, surgeons repair the damaged heart valve and correct the enlarged valve annulus, thus treating mitral regurgitation. To maintain long-term therapeutic effects, after valvular repair surgery, surgeons often implant an artificial valve annulus at the site of the valve annulus to ensure proper shaping of the original valve annulus and prevent further enlargement, thereby maintaining the treatment effect.

[0005] Currently, the main types of angioplasty rings available in clinical practice include soft rings, hard rings, and semi-hard rings.

[0006] Soft rings are often made of polymer materials. If the material is too soft, it will not be conducive to the effective closure of the valve leaflets and the shaping of the valve ring. It will not be able to effectively restore the physiological structure of the heart valve, and there will be a problem of re-dilation in the long term.

[0007] Rigid annulus rings are mostly made of metal and have good annular support strength. However, during the opening and closing of the mitral valve leaflets, the physiological curvature of the annulus changes accordingly. Currently, some products are designed to conform to the three-dimensional saddle shape of physiological curvature, but rigid annulus rings are not easy to bend and cannot realize the changes in the physiological curvature of the annulus ring during the cardiac cycle.

[0008] The semi-rigid ring body is adjustable in rigidity, maintaining a certain level of support strength while accommodating a certain degree of curvature variation between the front and rear rings. From a design perspective, the semi-rigid ring compromises the characteristics of both soft and hard rings, preventing long-term re-expansion while maintaining a certain physiological curvature.

[0009] Currently, semi-rigid rings mainly adopt a metal ring structure, and the hardness can be adjusted by adding or removing material in certain parts (e.g., Figure 13 While this design appears to satisfy both "annular support strength" and "good adaptation to physiological curvature," it actually requires balancing these two characteristics. If the support strength is guaranteed, the annulus cannot be designed to be too soft. When the mitral valve annulus contracts, the rigidity of the annulus creates a certain degree of adverse resistance. Therefore, this design sacrifices the adaptability to physiological curvature to some extent.

[0010] In summary, as a repair device, the valve annuloplasty ring needs to possess two basic properties simultaneously: 1. The ring body must provide sufficient strength to prevent annular dilation; 2. The ring body must be sufficiently flexible to adapt to the physiological curvature during systole. Clearly, achieving these two conflicting objectives solely through the inherent properties of the material itself is unlikely to yield optimal results.

[0011] During cardiac surgery, the surgeon uses an artificial heart valve angioplasty ring holder to place the angioplasty ring into the patient's body and adjusts its position using the holder, facilitating suturing to the surrounding tissue. To facilitate the surgeon's operation, the artificial heart valve angioplasty ring holder requires a handle, allowing the surgeon to adjust its position by gripping the handle. Existing holders are complex in structure with numerous components, obstructing the surgeon's view. Furthermore, even when using transparent materials, most clinical holders still indirectly affect the surgical field due to light refraction or reflection. Summary of the Invention

[0012] This invention addresses the problems of existing technologies by providing a heart valve annuloplasty implantation component that can adapt to annuloplasty bodies of various sizes. The annuloplasty body possesses a certain structural rigidity to prevent the heart valve from dilating again, while also having a certain angle adjustment capability to allow the annuloplasty body to be released during systole. During the systole of the heart valve, the annuloplasty body does not cause the annuloplasty body to dilate, eliminating the influence of the annuloplasty body on the annuloplasty body during the systole. The operation is simple and quick, which helps to improve surgical efficiency and stability. The structure is novel and the design is ingenious. This invention has a large area of ​​openwork, which facilitates observation and use by doctors, provides a wider surgical field, and is more suitable for small incision surgery.

[0013] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0014] This utility model provides a heart valve annuloplasty implantation assembly, comprising:

[0015] A forming ring body, the forming ring body comprising a ring-shaped main body arranged in a chain structure;

[0016] A ring holder includes a ring holding component, which includes a housing and a ring holding assembly movably disposed at the lower end of the housing. The ring holding assembly includes a limiting block, a movable connecting part mounted on the upper end of the limiting block, and a plurality of support rods mounted on the outer periphery of the lower end of the limiting block. The ends of the support rods are provided with ring holding parts that cooperate with the annular body. The ring holding parts are used to connect to the inner wall of the annular body. The movable connecting part is movably connected to the housing. The housing is provided with an operating component for driving the movable connecting part to move and lock. When the movable connecting part moves downward, the plurality of support rods drive the ring holding parts to extend outward.

[0017] The support rod is made of shape memory metal; the lower end of the housing is provided with a plurality of ring-holding guide holes, and the support rod corresponds one-to-one with the ring-holding guide holes, and the support rod is movably inserted through the ring-holding guide holes; the limiting block is slidably disposed within the housing.

[0018] The movable connecting part is a connecting screw; the housing is provided with a movable inner hole that is movably connected to the connecting screw;

[0019] The operating component includes a rotating rod and a fixed pin. A rotating hole and a pin guide hole are provided on one side of the housing. The rotating hole is rotatably connected to the rotating rod. The fixed pin is movably inserted into the pin guide hole. The pin guide hole and the rotating hole are respectively connected to the movable inner hole.

[0020] The rotating rod is used to drive the movable connecting part to move up and down; the fixing pin is used to lock and fix the movable connecting part.

[0021] The rotating rod has a first gripping end at one end and a gear portion on its outer periphery, which meshes with the connecting screw for transmission.

[0022] The fixed pin has a second gripping end at one end, a through section at the front end, a limiting section at the middle, a limiting piece between the limiting section and the second gripping end, and a limiting structure for locking the connecting screw on the outer periphery of the limiting section.

[0023] The ring holder also includes a handle component. The top of the housing is provided with a handle connection hole. The handle component includes a grip and a connecting rod connected to the lower end of the grip. The lower end of the connecting rod is connected to the handle connection hole.

[0024] The annular body includes a front ring segment and a rear ring segment, and transition ring segments are connected between the two ends of the front ring segment and the two ends of the rear ring segment.

[0025] Both the front ring section and the rear ring section include a main tube;

[0026] The transition ring segment includes a plurality of first connecting members connected in sequence; two adjacent first connecting members are movably connected; both ends of the main tube are movably connected to adjacent first connecting members respectively; one end of the first connecting member is provided with a first limiting connecting block; the other end of the first connecting member is provided with a first limiting connecting groove; the first limiting connecting block is rotatably disposed in the first limiting connecting groove; and a first movable gap is provided between the first limiting connecting block and the first limiting connecting groove.

[0027] Both the front ring segment and the rear ring segment include a connecting component that is movably connected to one end and / or both ends of the main tube. The connecting component includes at least one second connector. One end of the second connector is movably connected to the main tube, and the other end of the second connector is connected to an adjacent first connector.

[0028] A second limiting connecting block is provided at one end of the second connector and at one end of the main tube, and a second limiting connecting groove is provided at the other end of the second connector and at the other end of the main tube. The second limiting connecting block is rotatably disposed in the second limiting connecting groove.

[0029] The first limiting connecting block can have an included angle α of 1° to 5° relative to the first limiting connecting groove.

[0030] The annular body is made of metal; the outer periphery of the annular body is covered with an extended material layer, the outer periphery of the extended material layer is covered with a woven material layer, and a sewing part is provided on one side of the woven material layer.

[0031] Preferably, the stretchable material layer is a silicone layer with a thickness of 0.2 mm to 1 mm; the woven layer is a polymer woven mesh structure with a mesh thickness of 0.1 mm to 0.3 mm, and the woven layer has a thickness of 0.3 mm to 1 mm.

[0032] The beneficial effects of this utility model are:

[0033] In use, the surgeon manipulates the movable connecting part to move it up and down via the operating components, which in turn moves the ring-holding assembly up and down, and consequently the support rod and ring-holding component. This allows the surgeon to easily adjust the position and size of the ring body during surgery, and it can accommodate various sizes of formed ring bodies. The chain-like structure of the ring body provides it with structural rigidity, preventing the heart valve from dilating again. Simultaneously, it allows for angle adjustment, enabling the ring body to be released during systole, preventing valve annular dilation during systole and eliminating the influence of the ring body on the annular annular contraction. This invention is simple and quick to operate, improving surgical efficiency and stability. Its novel structure and ingenious design, along with its large openwork area, facilitates observation and use by the surgeon, providing a wider surgical field and making it more suitable for small-incision surgeries. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the forming ring body and the holding ring assembly in Embodiment 1.

[0035] Figure 2 This is a schematic diagram of the structure of the forming ring body and the holding ring assembly in Embodiment 1 from another perspective.

[0036] Figure 3 This is a schematic diagram of the ring holder in Example 1.

[0037] Figure 4 This is a schematic diagram of the handle component of Example 1.

[0038] Figure 5 This is a schematic diagram of the ring-holding kit in Example 1.

[0039] Figure 6 This is a schematic diagram of the shell structure of Example 1.

[0040] Figure 7 This is a schematic diagram of the fixing pin in Example 1.

[0041] Figure 8 This is a schematic diagram of the rotating rod in Example 1.

[0042] Figure 9This is a schematic diagram of the ring holder in the retracted state according to Example 1.

[0043] Figure 10 This is a schematic diagram of the structure of the ring-holding kit after the housing is hidden, as shown in Example 1.

[0044] Figure 11 This is a cross-sectional view of the retaining ring kit of Example 1.

[0045] Figure 12 This is a schematic diagram of the structure of the fixed pin and the movable connecting part in Embodiment 1.

[0046] Figure 13 This is a schematic diagram of the structure of a semi-rigid ring in the prior art.

[0047] Figure 14 This is a schematic diagram of the structure of the forming ring body in Example 1.

[0048] Figure 15 This is a schematic diagram of the cross-sectional structure of the forming ring body in Example 1.

[0049] Figure 16 This is a schematic diagram of the structure of the formed ring body after the extension material layer and the braided material layer are hidden in the hidden part of Example 1.

[0050] Figure 17 This is a schematic diagram of the structure of the formed ring body after the extension material layer and the braided material layer are hidden in Example 1.

[0051] Figure 18 This is a schematic diagram of the structure of multiple second connectors connected together in Embodiment 1.

[0052] Figure 19 This is a schematic diagram of the structure of the connection between multiple first connectors in Embodiment 1.

[0053] Figure 20 This is a schematic diagram of the structure of the first limiting connecting block and the first limiting connecting groove in Embodiment 1.

[0054] Figure 21 This is a schematic diagram of the structure of the first connector in Embodiment 2.

[0055] Figure 22 This is an exploded view of the structure of the first connector in Embodiment 2.

[0056] Figure 23 This is a schematic diagram of the ring-holding kit in Example 3.

[0057] Figure 24 This is a cross-sectional view of the retaining ring kit of Example 3.

[0058] Figure 25 This is a schematic diagram of the rotating handle in Example 3.

[0059] Figure 26 This is a schematic diagram of the structure of the ring-holding kit after the housing and rotating handle are hidden, as shown in Example 3.

[0060] Figure 27 This is a schematic diagram of the shell structure of Example 3.

[0061] Figure 28 This is a schematic diagram of the support rod in Example 4.

[0062] Figure 29 This is a schematic diagram of the structure of the retaining ring and the external heart valve repair ring in Example 4.

[0063] Figure 30 This is a schematic diagram of the retaining ring of Example 4.

[0064] exist Figures 1 to 30 The reference numerals in the figures include:

[0065] 100. Ring holding component; 200. Handle component; 300. Formed ring body;

[0066] 1. Front ring section; 2. Rear ring section; 3. Transition ring section; 4. Main tube; 5. First connector; 6. Second connector; 7. First limiting connector; 8. First limiting connector groove; 9. Second limiting connector; 10. Second limiting connector groove; 11. Extended material layer; 12. Braided layer; 13. Sewing part; 14. Main connector; 15. Secondary connector; 16. Positioning structure; 17. Positioning cavity; 18. Positioning arm;

[0067] 101. Housing; 102. Limiting block; 103. Movable connecting part; 104. Support rod; 105. Holding ring; 106. Rotating rod; 107. Fixed pin; 108. Rotating hole; 109. Pin guide hole; 110. First gripping end; 111. Gear part; 112. Second gripping end; 113. Passing section; 114. Limiting section; 115. Limiting piece; 116. Handle connecting hole; 117. Connecting rod; 118. Holding ring guide hole; 119. Snap-fitting part; 120. Snap-fitting hole; 121. Fitting groove; 122. Clamping block; 123. Rotating handle; 124. Rotating screw hole; 125. External thread section; 126. Clamping groove; 127. Grip. Detailed Implementation

[0068] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.

[0069] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0070] It should also be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0071] Example 1

[0072] A heart valve annuloplasty ring implantation assembly, such as Figures 1 to 20 As shown, including:

[0073] The forming ring body 300 includes a ring-shaped main body arranged in a chain-like structure.

[0074] A ring holder includes a ring holding component 100, which includes a housing 101 and a ring holding kit movably disposed at the lower end of the housing 101. The ring holding kit includes a limiting block 102, a movable connecting part 103 mounted on the upper end of the limiting block 102, and a plurality of support rods 104 mounted on the outer periphery of the lower end of the limiting block 102. Preferably, the support rods 104 are made of shape memory metal. The end of each support rod 104 is provided with a ring holding member 105 for cooperating with the annular body. The ring holding member 105 is used to abut against the inner wall of the annular body. The support rods 104 and the ring holding member 105 are integrally formed or fixedly connected to each other. The movable connecting part 103 is connected to the housing 101. 1. Movable connection: The housing 101 is provided with an operating component for driving the movable connection part 103 to move and lock; wherein, the lower end of the housing 101 is provided with a plurality of ring-holding guide holes 118, and the support rod 104 corresponds one-to-one with the ring-holding guide holes 118, and the support rod 104 is movably inserted through the ring-holding guide holes 118; the limiting block 102 is slidably disposed in the housing 101 to limit the movement of the ring-holding assembly and improve the stability of the up and down movement of the ring-holding assembly; under the action of the ring-holding guide holes 118, the movement accuracy of the support rod 104 is ensured; when the movable connection part 103 moves downward, the plurality of support rods 104 drive the ring-holding member 105 to extend outward.

[0075] Specifically, in this embodiment 1, the doctor uses the operating components to drive the movable connecting part 103 to move up and down, thereby driving the ring-holding kit to move up and down, and driving the support rod 104 and the ring-holding piece 105 to move up and down. This allows the doctor to easily adjust the position and size of the ring body during surgery, and it can adapt to various sizes of formed ring bodies 300. The ring body, which is arranged in a chain structure, gives the ring body of this embodiment a certain structural rigidity and strength. The strength of the ring body prevents the heart valve from expanding again. At the same time, this embodiment has a certain angle adjustment adaptability, so that the ring body can be released during the systolic phase. During the systolic phase of the heart valve, the annulus will not expand, and the annulus will not be affected by the annulus during the systolic phase. This embodiment is simple and quick to operate, which is conducive to improving surgical efficiency and surgical stability. The structure is novel and the design is ingenious. Since the support rod 104 is a strip structure and the shell 101 is arranged vertically, this embodiment has a large area of ​​hollowed-out state, which is convenient for doctors to observe and use, provides more surgical field of view, and is more suitable for small incision surgery.

[0076] In this embodiment, the movable connecting part 103 is a connecting screw; the housing 101 has a movable inner hole that is movably connected to the connecting screw; the operating component includes a rotating rod 106 and a fixed pin 107; one side of the housing 101 has a rotating hole 108 and a pin guide hole 109; the rotating hole 108 is rotatably connected to the rotating rod 106; the fixed pin 107 is movably inserted into the pin guide hole 109; the pin guide hole 109 and the rotating hole 108 are respectively connected to the movable inner hole; the rotating rod 106 is used to drive the movable connecting part 103 to move up and down; the fixed pin 107 is used to lock and fix the movable connecting part 103.

[0077] Preferably, the pin guide hole 109 and the rotating hole 108 are both horizontally arranged, and the connecting screw is vertically arranged.

[0078] In this embodiment, one end of the rotating rod 106 is provided with a first gripping end 110, and a gear portion 111 is provided on the outer periphery of the rotating rod 106. The gear portion 111 is meshed and driven by the connecting screw. Specifically, when the rotating rod 106 is rotated, the rotation of the gear portion 111 drives the connecting screw to rise or fall.

[0079] In this embodiment, one end of the fixing pin 107 is provided with a second gripping end 112, the front end of the fixing pin 107 is provided with a through section 113, the middle part of the fixing pin 107 is provided with a limiting section 114, a limiting piece 115 is provided between the limiting section 114 and the second gripping end 112, and the outer periphery of the limiting section 114 is provided with a limiting structure for locking the connecting screw. Specifically, the fixing pin 107 is inserted into the pin guide hole 109, the limiting structure of the limiting section 114 abuts against the connecting screw to prevent the connecting screw from rotating, thereby locking the position of the retaining ring assembly; when the fixing pin 107 is pulled to move out of the housing 101, the limiting section 114 disengages from the connecting screw, the through section 113 reaches the position of the connecting screw, and the limiting piece 115 prevents the fixing pin 107 from falling off, making the structure reliable.

[0080] In this embodiment, the ring holder further includes a handle component 200, which is vertically arranged. The top of the housing 101 has a handle connection hole 116. The handle component 200 includes a grip 127 and a connecting rod 117 connected to the lower end of the grip 127. The lower end of the connecting rod 117 is connected to the handle connection hole 116. Specifically, the handle connection hole 116 can be a threaded hole, and the connecting rod 117 can be a threaded structure that mates with the threaded hole.

[0081] In this embodiment, the ring holder is made of high-temperature resistant metal and polymer materials. The above-mentioned materials can be reused after being sterilized by high-temperature steam or ethylene oxide, thus achieving reuse. Compared with the existing disposable ring holders, this embodiment can greatly reduce resource waste.

[0082] In this embodiment, the annular body is saddle-shaped; the annular body is made of metal; the outer periphery of the annular body is covered with an extended material layer 11, and the outer periphery of the extended material layer 11 is covered with a woven layer 12, with a suture portion 13 on one side of the woven layer 12; the extended material layer 11 is a silicone layer with a thickness of 0.2mm to 1mm; the woven layer 12 is a polymer woven mesh structure with a mesh thickness of 0.1mm to 0.3mm, and the woven layer 12 has a thickness of 0.3mm to 1mm; the extended material layer 11 and the woven layer 12 can protect the annular body, ensuring structural reliability, and also prevent wear on the heart valves; the annular body is hollow tubular with a uniform outer diameter ranging from φ1 to 3mm, and is made of high-strength metals, such as stainless steel, nickel-titanium alloy, cobalt-chromium alloy, and other metal materials commonly used in implantable devices.

[0083] In this embodiment, the annular body includes a front ring segment 1 and a rear ring segment 2, and a transition ring segment 3 is connected between both ends of the front ring segment 1 and both ends of the rear ring segment 2.

[0084] Both the front ring section 1 and the rear ring section 2 include a main tube 4;

[0085] The transition ring segment 3 includes a plurality of first connecting members 5 connected in sequence; two adjacent first connecting members 5 are movably connected; both ends of the main tube 4 are movably connected to adjacent first connecting members 5 respectively; one end of the first connecting member 5 is provided with a first limiting connecting block 7; the other end of the first connecting member 5 is provided with a first limiting connecting groove 8; the first limiting connecting block 7 is rotatably disposed in the first limiting connecting groove 8; and a first movable gap is provided between the first limiting connecting block 7 and the first limiting connecting groove 8.

[0086] Specifically, this embodiment features a novel structure and ingenious design. Under the aforementioned configuration, the main tube 4 stabilizes the anterior annular segment 1 and the posterior annular segment 2, giving this embodiment a certain structural rigidity and strength. The strength of the annular main body prevents the heart valve from expanding again. In addition, the transition annular segment 3 is formed by multiple sequentially connected first connecting parts 5, giving this embodiment a certain angle adjustment capability. This allows the annular main body to be released during systole, preventing the annulus from expanding during the heart valve's systole and eliminating the influence of the annulus on the annulus during systole.

[0087] Furthermore, both the front ring segment 1 and the rear ring segment 2 include connecting components that are movably connected to one end and / or both ends of the main body tube 4. The connecting components include at least one second connector 6, one end of the second connector 6 is movably connected to the main body tube 4, and the other end of the second connector 6 is connected to an adjacent first connector 5.

[0088] A second limiting connecting block 9 is provided at one end of the second connecting member 6 and at one end of the main body tube 4. A second limiting connecting groove 10 is provided at the other end of the second connecting member 6 and at the other end of the main body tube 4. The second limiting connecting block 9 is rotatably disposed in the second limiting connecting groove 10. A second movable gap is provided between the second limiting connecting block 9 and the second limiting connecting groove 10. The adaptive extension and contraction of the front ring segment 1 and the rear ring segment 2 are realized through the second movable gap.

[0089] Specifically, a second limiting connecting block 9 is provided at one end of the second connecting member 6 and one end of the main body tube 4, and a second limiting connecting groove 10 is provided at the other end of the second connecting member 6 and the other end of the main body tube 4. The second limiting connecting block 9 is rotatably disposed within the second limiting connecting groove 10. Of course, the first limiting connecting block 7 can also be configured to cooperate with the second limiting connecting groove 10, and the second limiting connecting block 9 can also be configured to cooperate with the first limiting connecting groove 8. The first limiting connecting block 7 can be movably accommodated within the second limiting connecting groove 10 of the adjacent second connecting member 6, and the second limiting connecting block 9 can be movably accommodated within the first limiting connecting groove 8 of the adjacent first connecting member 5. A second movable gap is provided between the second limiting connecting block 9 and the second limiting connecting groove 10, through which the adaptive extension and contraction of the front ring segment 1 and the rear ring segment 2 are realized.

[0090] In this embodiment, the first limiting connecting block 7 can have an included angle α of 1° to 5° relative to the first limiting connecting groove 8. The rotatable angle between each first connecting member 5 is 1° to 5°. The second limiting connecting block 9 can have an included angle α of 1° to 5° relative to the second limiting connecting groove 10; specifically, the rotatable angle between each second connecting member 6 is 1° to 5°.

[0091] The first limiting connecting block 7 and the second limiting connecting block 9 can be spherical, ellipsoidal, or polygonal. After the two adjacent first connecting parts 5 are locked together, they can move relative to each other due to the structure of the first and second movable gaps. This ensures the ring strength of the annular body and prevents the heart valve from expanding again. It can also adapt to the systolic phase of the heart valve, release the pressure of the annular body during the systolic phase, and eliminate the influence of the formed annular body on the valve annulus during the systolic phase.

[0092] Example 2

[0093] The difference between Example 2 and Example 1 is as follows: Figures 21 to 22 As shown, the first connector 5 includes a main connecting part 14, a secondary connecting part 15, and a positioning structure part 16. The rear end of the main connecting part 14 has a positioning cavity 17, and the front end of the secondary connecting part 15 has two opposing positioning arms 18. Both the main connecting part 14 and the secondary connecting part 15 are hollow. The positioning structure part 16 is inserted into the secondary connecting part 15 and the main connecting part 14, located between the two positioning arms 18. The positioning structure part 16 is used to push open the two positioning arms 18, causing them to engage in the positioning cavity 17. Specifically, the positioning arm 18 at the front end of the secondary connecting part 15 extends into the positioning cavity 17, and the positioning structure part 16 is inserted from its hollow position between the main connecting part 14 and the secondary connecting part 15, pushing open the two positioning arms 18 so that they abut against the inner wall of the positioning cavity 17, thereby locking the main connecting part 14 and the secondary connecting part 15 together.

[0094] Furthermore, the opening direction of the main connecting part 14 can be designed to be tilted at a certain angle according to actual needs, so that the movement angle of the first connecting member 5 can be controlled within a specific orientation and range.

[0095] In this embodiment 2, the rear end of the main connecting part 14 has an opening that communicates with the positioning cavity 17. The opening facilitates the positioning arm 18 of the secondary connecting part 15 to extend into the positioning cavity 17. Preferably, the positioning cavity 17 is a circular cavity or an elliptical cavity. The positioning arm 18 is provided with a semi-circular protrusion that matches the shape of the inner wall of the positioning cavity 17 and is used to abut against the inner wall of the circular or elliptical cavity to ensure the positioning effect between the positioning arm 18 and the positioning cavity 17, and the structure is reliable.

[0096] Of course, the structure of the second connector 6 can also be the same as that of the first connector 5 in this embodiment 2. The specific principle and structure are as described above, and will not be repeated here.

[0097] Example 3

[0098] The difference between Example 3 and Example 1 is as follows: Figures 23 to 27As shown, a clamping block 122 is provided on the top of the movable connecting part 103, and the operating components include a rotating handle 123. The top of the housing 101 is provided with a rotating screw hole 124 that is rotatably connected to the rotating handle 123. The lower outer peripheral wall of the rotating handle 123 is provided with an external thread section 125 that is threadedly connected to the rotating screw hole 124. The lower end of the rotating handle 123 is provided with a clamping groove 126 that engages with the clamping block 122. Specifically, with this configuration, the handle component 200 in Embodiment 1 is omitted. By turning the rotating handle 123, the movable connecting part 103 can be moved up and down with the external thread section 125 engaged with the rotating screw hole 124. The operation is simple and convenient.

[0099] Example 4

[0100] The difference between Example 4 and Example 1 is as follows: Figures 28 to 30 As shown, the end of the support rod 104 is detachably connected to the retaining ring 105, which can be achieved through conventional screws and screw holes. Preferably, the end of the support rod 104 is provided with a snap-fit ​​component 119, the back of the retaining ring 105 is provided with a snap-fit ​​hole 120 that engages with the snap-fit ​​component 119, and the front end of the retaining ring 105 is provided with a fitting groove 121 that fits against the external heart valve angioplasty ring. The fitting groove 121 can fit more closely to the outer wall of the external heart valve angioplasty ring, improving the stability of the retaining ring in this embodiment and making the structure reliable. Furthermore, the snap-fit ​​component 119 includes two opposing elastic snap-fit ​​arms, and the outer wall of the elastic snap-fit ​​arms is provided with a snap-fit ​​protrusion. The two elastic snap-fit ​​arms are inserted into the snap-fit ​​hole 120, and the snap-fit ​​protrusion abuts against the inner wall of the snap-fit ​​hole 120 under the action of the elastic snap-fit ​​arms, thereby locking the retaining ring 105 and the support rod 104.

[0101] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A cardiac valve annuloplasty ring implantation assembly, characterized in that, include: A forming ring body, the forming ring body comprising a ring-shaped main body arranged in a chain structure; A ring holder includes a ring holding component, which comprises a housing and a ring holding assembly movably disposed at the lower end of the housing. The ring holding assembly includes a limiting block, a movable connecting part mounted on the upper end of the limiting block, and a plurality of support rods mounted on the outer periphery of the lower end of the limiting block. The ends of the support rods are provided with ring holding parts that cooperate with the annular body. The ring holding parts are used to connect to the inner wall of the annular body. The movable connecting part is movably connected to the housing. The housing is provided with an operating component for driving the movable connecting part to move and lock. When the movable connecting part moves downward, the plurality of support rods drive the ring holding parts to extend outward. The movable connecting part is a connecting screw; the housing is provided with a movable inner hole that is movably connected to the connecting screw. The operating component includes a rotating rod and a fixed pin. A rotating hole and a pin guide hole are provided on one side of the housing. The rotating hole is rotatably connected to the rotating rod. The fixed pin is movably inserted into the pin guide hole. The pin guide hole and the rotating hole are respectively connected to the movable inner hole. The rotating rod is used to drive the movable connecting part to move up and down; the fixing pin is used to lock and fix the movable connecting part.

2. The heart valve annuloplasty ring implantation assembly according to claim 1, characterized in that: The support rod is made of shape memory metal; the lower end of the housing is provided with a plurality of ring-holding guide holes, and the support rod corresponds one-to-one with the ring-holding guide holes, and the support rod is movably inserted through the ring-holding guide holes; the limiting block is slidably disposed within the housing.

3. The heart valve annuloplasty ring implantation assembly according to claim 1, characterized in that: One end of the fixing pin is provided with a second gripping end, the front end of the fixing pin is provided with a through section, the middle part of the fixing pin is provided with a limiting section, a limiting piece is provided between the limiting section and the second gripping end, and a limiting structure for locking the connecting screw is provided on the outer periphery of the limiting section.

4. The heart valve annuloplasty ring implantation assembly according to claim 1, characterized in that: The ring holder also includes a handle component. The top of the housing is provided with a handle connection hole. The handle component includes a grip and a connecting rod connected to the lower end of the grip. The lower end of the connecting rod is connected to the handle connection hole.

5. The cardiac valve annuloplasty ring implantation assembly according to claim 1, characterized in that: The annular body includes a front ring segment and a rear ring segment, and transition ring segments are connected between the two ends of the front ring segment and the two ends of the rear ring segment. Both the front ring section and the rear ring section include a main tube; The transition ring segment includes a plurality of first connecting members connected in sequence; two adjacent first connecting members are movably connected; both ends of the main tube are movably connected to adjacent first connecting members respectively; one end of the first connecting member is provided with a first limiting connecting block; the other end of the first connecting member is provided with a first limiting connecting groove; the first limiting connecting block is rotatably disposed in the first limiting connecting groove; and a first movable gap is provided between the first limiting connecting block and the first limiting connecting groove. Both the front ring segment and the rear ring segment include a connecting component that is movably connected to one end and / or both ends of the main tube. The connecting component includes at least one second connector. One end of the second connector is movably connected to the main tube, and the other end of the second connector is connected to an adjacent first connector. A second limiting connecting block is provided at one end of the second connector and at one end of the main tube, and a second limiting connecting groove is provided at the other end of the second connector and at the other end of the main tube. The second limiting connecting block is rotatably disposed in the second limiting connecting groove.

6. The cardiac valve annuloplasty ring implantation assembly according to claim 5, characterized in that: The first limiting connecting block can have an included angle α of 1° to 5° relative to the first limiting connecting groove.

7. The heart valve annuloplasty ring implantation assembly according to claim 1, characterized in that: The ring-shaped main body is made of metal; the outer periphery of the ring-shaped main body is covered with an extended material layer, the outer periphery of the extended material layer is covered with a woven material layer, and a sewing part is provided on one side of the woven material layer.

8. A cardiac valve annuloplasty ring implantation assembly according to claim 7, characterized in that: The stretchable material layer is a silicone layer with a thickness of 0.2 mm to 1 mm; the woven layer is a polymer woven mesh structure with a mesh thickness of 0.1 mm to 0.3 mm, and the woven layer has a thickness of 0.3 mm to 1 mm.

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