Valve annuloplasty ring

Abstract

This invention discloses a valve annuloplasty ring, comprising a main ring and an outer layer, the outer layer covering the outer periphery of the main ring. The main ring is a closed ring formed by the cooperation of an anterior ring segment, a posterior ring segment, a left ring segment, and a right ring segment. The anterior and posterior ring segments are less flexible than the left and right ring segments, and the posterior ring segment is more flexible than the anterior ring segment. Both the left and right ring segments include multiple sequentially arranged connectors, with at least two adjacent connectors movably connected and having a gap at the connection point. This allows the connectors to extend or retract relative to an adjacent connector along the circumference of the main ring to change its circumference, and to rotate relative to an adjacent connector to deform the main ring along its circumferential and axial directions. This valve annuloplasty ring provides suitable strength to prevent annular dilation while also possessing suitable flexibility to adapt to the physiological curvature changes of the heart valve during systole-diastole-systole.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to a valve repair ring. Background Technology

[0002] During the systolic and diastolic cycles of the heart, blood flows in one direction only 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 to flow from the left ventricle into the aorta while preventing backflow of blood from the ventricles into the atria. 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, causing 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.

[0003] 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.

[0004] Currently, the main types of angioplasty rings available in clinical practice include soft rings, hard rings, and semi-hard rings.

[0005] 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.

[0006] 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.

[0007] The semi-rigid annulus can be rigidly adjusted, maintaining a certain level of support strength while accommodating some curvature changes between the anterior and posterior annulus. From a design perspective, the semi-rigid annulus compromises the characteristics of both soft and rigid annulus systems, preventing long-term re-expansion while maintaining a certain physiological curvature. Currently, semi-rigid annulus systems mainly use a metal annulus structure, achieving adjustable hardness by adding or removing material in certain areas. While this design seems to satisfy both "annulus support strength" and "good adaptation to physiological curvature," it actually requires a balance between these two characteristics. If support strength is guaranteed, the annulus cannot be designed to be too soft; during mitral valve annulus contraction, the annulus's hardness creates a certain degree of adverse resistance. Therefore, this design sacrifices physiological curvature adaptability to some extent.

[0008] In summary, as a repair device, the valve repair ring needs to possess two basic properties simultaneously:

[0009] The ring body provides sufficient strength to prevent the valve ring from expanding;

[0010] The ring is flexible enough to adapt to the physiological curvature during contraction.

[0011] Obviously, it is difficult to achieve the optimal effect by trying to achieve two opposing goals through the properties of the material itself. Summary of the Invention

[0012] The purpose of this invention is to provide a valve annuloplasty ring that provides suitable strength to prevent valve dilation and suitable flexibility to adapt to the physiological curvature during systole.

[0013] The following technical solutions are used to achieve the above objectives.

[0014] A valve repair ring, the valve repair ring comprising a main ring and an outer layer, the outer layer covering the outer periphery of the main ring;

[0015] The main ring is a closed ring formed by the cooperation of a front ring segment, a rear ring segment, a left ring segment, and a right ring segment. The front and rear ring segments are less flexible than the left and right ring segments, and the rear ring segment is more flexible than the front ring segment. The left and right ring segments each include multiple sequentially arranged connectors. At least two adjacent connectors are movably connected with a gap at the connection. The connectors can extend and retract relative to another adjacent connector along the circumference of the main ring to change the circumference of the main ring, and the connectors can rotate relative to another adjacent connector to cause the main ring to deform along its own circumferential and axial directions.

[0016] In some embodiments, both the left and right ring segments include a main body segment and two transition segments. The two transition segments are disposed at opposite ends of the main body segment and are respectively connected to the front and rear ring segments. The main body segment includes at least two connecting members, and the transition segment includes at least one connecting member. The overall deformation of the transition segment is less than the overall deformation of the main body segment.

[0017] In some embodiments, the deformation angle range of two adjacent connectors in the transition section is 1° to 5°, and the overall deformation angle range of the transition section is 0° to 25°.

[0018] The deformation angle range of two adjacent connecting parts in the main body segment is 1° to 5°, and the overall deformation angle range of the main body segment is 0° to 30°.

[0019] In some embodiments, the connectors are provided with a first mating portion and a second mating portion at opposite ends, and two adjacent connectors are movably connected through the first mating portion of the preceding connector and the second mating portion of the following connector, with the movable gap existing at the connection.

[0020] In some embodiments, the spacing between two adjacent connectors of the main body segment is smaller than the spacing between two adjacent connectors of the transition segment; the first mating part and the second mating part are each provided in multiples along the circumferential direction of the connector, and the number of the first mating parts and the second mating parts of the connectors in the main body segment is greater than the number of the first mating parts and the second mating parts of the connectors in the transition segment.

[0021] In some embodiments, the first mating part is an inwardly recessed insertion groove forming a concave arc-shaped petal, and the width of the groove opening is smaller than the width inside the groove; the second mating part is an outwardly protruding insertion member forming a convex arc-shaped petal that fits the insertion groove, and the insertion member is rotatably inserted into the insertion groove with the aforementioned movable gap.

[0022] In some embodiments, the insertion slot is inclined along the circumferential direction of the connector, and the angle between the center line of the insertion slot and the central axis of the connector in space is in the range of 1° to 5°.

[0023] In some embodiments, the first mating part is a circular groove, and the second mating part includes a pushing part and a retaining member. The retaining member includes a connecting tube with a through structure. The end of the connecting tube is provided with two hemispherical elastic retaining parts. When the two elastic retaining parts are in a normal state, they can cooperate to form a spherical retaining body and extend into or out of the first mating part. The pushing part can pass through the connecting tube and squeeze into the position between the two elastic retaining parts, so that the two elastic retaining parts open up to each other and are confined within the first mating part.

[0024] In some embodiments, the first mating part is a polygonal insertion groove that is recessed inward, and the width of the groove opening is smaller than the width inside the groove; the second mating part is a polygonal insertion member that protrudes outward and is adapted to the insertion groove, the insertion member being rotatably inserted into the insertion groove and having the aforementioned play gap.

[0025] In some embodiments, the outer body includes a silicone layer and a polymer material layer, the silicone layer and the polymer material layer sequentially covering the outer periphery of the main ring, with the silicone layer located between the polymer material layer and the main ring, and the polymer material layer extending outward from the main ring to form a suture portion.

[0026] The technical solution provided by this invention has the following advantages and effects:

[0027] The valve annuloplasty ring consists of a main ring surrounding an outer layer. This main ring can be sutured to the heart via the outer layer for secure fixation in place. The main ring comprises anterior, posterior, left, and right annuloplasty segments that work together to form a closed annulus. The anterior and posterior segments are less flexible than the left and right annuloplasty segments, while the posterior segment is more flexible than the anterior segment. Therefore, the anterior and posterior segments provide better annulus support during movement. The left and right annuloplasty segments are each connected by multiple connectors, and these connections are not interlocking. The movement interval allows the connecting member to extend and retract along the circumference of the main ring relative to another connecting member, thereby changing the circumference of the main ring. It also allows the connecting member to rotate relative to another connecting member, thereby causing the main ring to deform along its own circumferential and axial directions. This gives the valve annuloplasty ring appropriate deformability, providing suitable strength to prevent annular dilation, while also providing suitable flexibility and elasticity to adapt to the physiological curvature changes of the heart valve during the systolic-diastolic-systolic motion. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the valve repair ring according to Embodiment 1 of the present invention;

[0029] Figure 2yes Figure 1 A schematic diagram of a partial cross-section of the valve repair ring;

[0030] Figure 3 yes Figure 1 A cross-sectional schematic diagram of the overall structure of the valve repair ring;

[0031] Figure 4 yes Figure 1 A schematic diagram of the connection structure of the valve repair ring connector;

[0032] Figure 5 yes Figure 1 A schematic diagram of the rotation angle of the connecting parts of the valve repair ring;

[0033] Figure 6 This is a schematic diagram of the valve repair ring connector in an unconnected state according to Embodiment 2 of the present invention;

[0034] Figure 7 yes Figure 6 A schematic diagram of the valve repair ring connector in the connected state;

[0035] Figure 8 yes Figure 1 A schematic diagram of the cross-sectional structure of the main ring of the valve repair ring;

[0036] Figure 9 yes Figure 1 A schematic diagram of the radial cross-section of the valve repair ring.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Valve reshaping ring;

[0039] 1. Main ring; 11. Front ring segment; 12. Rear ring segment; 13. Left ring segment; 131. Main body segment; 132. Transition segment; 14. Right ring segment; 15. Connector; 151. First mating part; 152. Second mating part; 153. Pushing part; 154. Holding part; 155. Connecting tube; 156. Elastic holding part; 2. Outer body; 21. Silicone layer; 22. Polymer material layer; 23. Seam part. Detailed Implementation

[0040] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0041] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0042] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0043] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0044] It should be noted that the valve annuloplasty ring 100 can be implanted into the patient's valve annulus position to ensure good shaping of the autologous valve annulus, better conform to the movement of the mitral or tricuspid valve, and prevent further enlargement of the valve annulus to maintain the treatment effect.

[0045] Example 1

[0046] This invention provides a valve repair ring 100, such as Figures 1 to 9 As shown, the valve repair ring 100 includes a main ring 1 and an outer layer 2, with the outer layer 2 covering the outer periphery of the main ring 1. The outer layer 2 serves two purposes: protecting the structure of the main ring 1 and facilitating suturing with the heart. The outer layer 2 can be one or more layers, and its material can be specifically selected according to the needs of suturing and covering.

[0047] The main ring 1 is a closed ring formed by the front ring segment 11, the rear ring segment 12, the left ring segment 13 and the right ring segment 14. Unless otherwise specified, when the main ring 1 is a closed ring, the connection at the closed connection position of the main ring 1 can be achieved by means of sewing, bonding, welding, insertion or snapping. The front ring segment 11 and the rear ring segment 12 are less flexible than the left ring segment 13 and the right ring segment 14, and the rear ring segment 12 is more flexible than the front ring segment 11. The left ring segment 13 and the right ring segment 14 each include a plurality of sequentially arranged connectors 15. At least two adjacent connectors 15 are movably connected and there is a gap at the connection. The connector 15 can extend and retract relative to another adjacent connector 15 along the circumferential direction of the main ring 1 to change the circumference of the main ring 1, and the connector 15 can rotate relative to another adjacent connector 15 to drive the main ring 1 to deform along its own circumferential and axial directions. It should be noted that the front connector 15 and the rear connector 15 mentioned in this embodiment only refer to and distinguish two adjacent connectors 15, but are not limited to the front and rear positions in the forward rotation direction or the front and rear positions in the reverse rotation direction.

[0048] Specifically, in the movement pattern of the mitral or tricuspid valve, the valve is in a cyclical movement process of systole-diastole-systole. During cardiac systole, the valve orifice of the mitral or tricuspid valve contracts, the valve annulus becomes saddle-shaped, and the leaflets close. Therefore, in this embodiment, based on the saddle-shaped valve annulus state, the anterior annulus segment 11 and the posterior annulus segment 12 are designed to have less flexibility than the left annulus segment 13 and the right annulus segment 14, and the posterior annulus segment 12 has greater flexibility than the anterior annulus segment 11. The anterior annulus segment 11 and the posterior annulus segment 12 form good annular support strength. Furthermore, since the left annulus segment 13 and the right annulus segment 14 are each connected by multiple connectors 15, with at least two adjacent connectors 15 being movably connected and having a gap at the connection point, both the left annulus segment 13 and the right annulus segment 14 can form major deformation areas. The connectors 15 are connected relative to another adjacent connector 15 along the circumferential direction of the main annulus 1. The telescopic movement allows the main ring 1 to extend and retract along its own circumference, changing its circumference to maintain a fixed range and prevent valve re-dilation. Simultaneously, the connecting member 15 rotates relative to the adjacent connecting member 15, causing the main ring 1 to deform circumferentially and axially. For example, the main ring 1 can deform between a saddle shape and a planar annular shape according to the shape of the heart valve, and can also deform between an arc shape and a straight line corresponding to the positions of the left annular segment 13 and the right annular segment 14, adapting to the physiological curvature of the heart valve during systole-diastole-systole. During systole, the mitral valve orifice contracts, the valve annulus becomes saddle-shaped, and the leaflets close. At this time, the main ring 1 fills the gap, adapting to the contraction of the valve annulus. The rigid connection of the main ring 1 ensures the strength of the annulus support, preventing long-term re-dilation.

[0049] In summary, the valve annuloplasty ring 100 is formed by an outer layer 2 surrounding the main ring 1. The main ring 1 can be sutured to the heart through the outer layer 2 to securely fix it in place at the heart valve annulus position. The main ring 1 is provided with an anterior ring segment 11, a posterior ring segment 12, a left ring segment 13, and a right ring segment 14, which work together to form a closed ring. The anterior ring segment 11 and the posterior ring segment 12 are less flexible than the left ring segment 13 and the right ring segment 14, while the posterior ring segment 12 is more flexible than the anterior ring segment 11. Therefore, during movement, the anterior ring segment 11 and the posterior ring segment 12 have better annular support strength, while the left ring segment 13 and the right ring segment 14 are each connected by multiple... The connector 15 is movably connected with a gap at the connection point, enabling it to extend and retract relative to the adjacent connector 15 along the circumferential direction of the main body ring 1 to change the circumference of the main body ring 1, and to rotate relative to the adjacent connector 15 to deform the main body ring 1 along its own circumferential and axial directions. This allows the valve annuloplasty ring 100 to have appropriate deformability, providing suitable strength to prevent annular dilation, while also possessing suitable soft deformation properties and elasticity to adapt to the physiological curvature changes of the heart valve during the systolic-diastolic-systolic motion.

[0050] In some embodiments, such as Figure 3 and Figure 8As shown, both the left ring segment 13 and the right ring segment 14 include a main body segment 131 and two transition segments 132. The two transition segments 132 are located at opposite ends of the main body segment 131 and are connected to the front ring segment 11 and the rear ring segment 12, respectively. The main body segment 131 includes at least two connectors 15, and the transition segment 132 includes at least one connector 15. The overall deformation of the transition segment 132 is less than the overall deformation of the main body segment 131. Understandably, since the left ring segment 13 and the right ring segment 14 are transition areas connecting the front ring segment 11 and the rear ring segment 12, the left ring segment 13 and the right ring segment 14 are divided into a main body segment 131 and a transition segment 132 according to their degree of deformation; wherein the transition segment 132 is located between the front ring segment 11 and the main body segment 131, and before the rear ring segment 12 and the main body segment 131, therefore the degree of deformation of the transition segment 132 is less than that of the main body segment 131, so that the movement angle of the left ring segment 13 and the right ring segment 14 is controlled within a specific orientation and range, specifically... By using different numbers of connectors 15 between the transition segment 132 and the main body segment 131, the overall deformation of the transition segment 132 is less than that of the main body segment 131. This allows the left annular segment 13 or right annular segment 14 formed by the transition segment 132 and the main body segment 131 to connect with the anterior annular segment 11 and the posterior annular segment 12 to form a closed ring. Furthermore, the deformation area between the left annular segment 13 and the right annular segment 14 has a suitable range of motion to accommodate the physiological curvature changes of the heart valve during systole-diastole-systole. In addition, the transition segment 132 can also be connected to the anterior annular segment 11 or the posterior annular segment 12 through a mating connection, or by other methods such as suturing, bonding, welding, or snap-fitting.

[0051] Specifically, in some embodiments, such as Figure 3 and Figure 5 As shown, the deformation angle range of two adjacent connecting members 15 in the transition section 132 is 1° to 5°, and the overall deformation angle range of the transition section 132 is 0° to 25°; the deformation angle range of two adjacent connecting members 15 in the main body section 131 is 1° to 5°, and the overall deformation angle range of the main body section 131 is 0° to 30°. Within this range, the transition section 132 and the main body section 131, in combination, form the left annular segment 13 and the right annular segment 14, which can well adapt to the physiological curvature changes of the heart valve during the systolic-diastolic-systolic motion process, and possess appropriate strength to prevent annular dilation.

[0052] In some embodiments, the connector 15 is provided with a first mating portion 151 and a second mating portion 152 at opposite ends, and two adjacent connectors 15 are movably connected through the first mating portion 151 of the preceding connector 15 and the second mating portion 152 of the following connector 15, and there is a movable gap at the connection.

[0053] In some embodiments, the spacing between two adjacent connectors 15 of the main body segment 131 is smaller than the spacing between two adjacent connectors 15 of the transition segment 132; multiple first mating portions 151 and second mating portions 152 are provided at intervals along the circumferential direction of the connectors 15, and the number of first mating portions 151 and second mating portions 152 of the connectors 15 in the main body segment 131 is greater than the number of first mating portions 151 and second mating portions 152 of the connectors 15 in the transition segment 132. It is understood that the spacing between adjacent connectors 15 and the number of first mating portions 151 and second mating portions 152 directly affect the deformation amplitude corresponding to the ring segment. Specifically, the smaller the distance between two adjacent connecting parts 15, the larger the angle of deformation. Therefore, by setting the distance between two adjacent connecting parts 15 of the main body segment 131 to be smaller than the distance between two adjacent connecting parts 15 of the transition segment 132, the overall deformation amplitude of the main body segment 131 is greater than that of the transition segment 132. Furthermore, the number of second mating parts 152 and first mating parts 151 affects the rotation direction of two adjacent connecting parts 15. By providing multiple, for example, at least four and an even number of second mating parts 152 and first mating parts 151 at both ends of the connecting parts 15 in the main body segment 131, the main body segment 131 can rotate in both the vertical and horizontal directions, thus forming a main body segment 131 with a larger deformation amplitude. The main body segment 131 is designed to have flexible deformability to adapt to the physiological curvature changes during heart valve movement. The transition segment 132 has fewer second mating parts 152 and first mating parts 151 at both ends than the main body segment 131, thus restricting the rotation direction of the transition segment 132. This allows the transition segment 132 to rotate only vertically, preventing horizontal rotation and creating a directional rotational transition segment 132. This transition segment 132 effectively serves as a transition area between the anterior annular segment 11, the posterior annular segment 12, and the flexible main body segment 131. On one hand, it cooperates with the anterior and posterior annular segments 11 and 12 to ensure appropriate strength and prevent annular dilation; on the other hand, it cooperates with the main body segment 131 to adapt to the physiological curvature changes during heart valve movement. Furthermore, it should be noted that when the connector 15 at the end of the transition segment 132 connects to the connector 15 at the end of the main body segment 131, the number of second mating parts 152 and first mating parts 151 is appropriately arranged to ensure smooth connection and transition between the two connectors 15.

[0054] Specifically, in this embodiment, the transition section 132 consists of a minimum of one and a maximum of nine connectors 15, with each connector 15 having a length ranging from 2mm to 10mm; the main body section 131 consists of two to ten connectors 15, with each connector 15 having a length ranging from 2mm to 10mm. Of course, in other embodiments, the number and length of connectors 15 in the transition section 132 and the main body section 131 are not limited to the above ranges, and other numbers and lengths are also applicable.

[0055] In some embodiments, such as Figure 3 and Figure 4 As shown, the first mating part 151 is an inwardly recessed, arc-shaped insertion groove, and the width of the groove opening is smaller than the width inside the groove. The second mating part 152 is an outwardly protruding, arc-shaped insertion member that fits the insertion groove. The insertion member is rotatably inserted into the insertion groove, and the movable gap exists. It can be understood that the insertion member is inserted into the insertion groove, and the insertion member can rotate relative to the insertion groove so that the subsequent connector 15 can rotate relative to the preceding connector 15. This prevents the insertion member from dislodging from the groove opening during the rotation of two adjacent connectors 15, thereby avoiding affecting the normal working state of the valve forming ring 100.

[0056] In some embodiments, such as Figure 5 As shown, the insertion groove is inclined along the circumferential direction of the connector 15, and the spatial angle α between the center line of the insertion groove and the central axis of the connector 15 is in the range of 1° to 5°. The shape of the connector is adapted to the shape of the insertion groove so that the subsequent connector 15 can rotate relative to the previous connector 15 in the direction of the rear ring segment 12 to form a closed ring shape with a moderate deformation area.

[0057] In some embodiments, such as Figure 9 As shown, the outer layer 2 includes a silicone layer 21 and a polymer material layer 22. The silicone layer 21 and the polymer material layer 22 sequentially cover the outer periphery of the main ring 1, with the silicone layer 21 located between the polymer material layer 22 and the main ring 1. The polymer material layer 22 extends outward from the main ring 1 to form a suture portion 23. It should be noted that since the main ring 1 is a deformable closed ring structure, the outer layer 2 covering the outside of the main ring 1 needs to be able to both freely contract and stably fix itself to the heart valve annulus. The outer layer 2 consists of a silicone layer 21 with good elongation and a polymer material layer 22 from the inside out. The polymer material layer 22 has a hollow structure, and the hollow shape can be circular, triangular, hexagonal, etc., without any particular limitation. The suture portion 23 has a dense hollow structure, which facilitates suturing.

[0058] In some embodiments, the thickness of the silicone layer 21 ranges from 0.2 mm to 1 mm, the thickness of the polymer material layer 22 ranges from 0.1 mm to 0.3 mm, and the thickness of the stitching portion 23 ranges from 0.3 mm to 1 mm.

[0059] In some embodiments, each of the front ring segment 11, rear ring segment 12, left ring segment 13, and right ring segment 14 of the main body ring 1 can be a solid structure or a hollow structure, without particular limitation. Each of the front ring segment 11, rear ring segment 12, left ring segment 13, and right ring segment 14 of the main body ring 1 can be made of one material or multiple materials. Specifically, in this embodiment, each of the front ring segment 11, rear ring segment 12, left ring segment 13, and right ring segment 14 of the main body ring 1 is a hollow tubular structure with a consistent outer diameter ranging from 1 mm to 3 mm. Each segment is made of a high-strength metal material, such as stainless steel, nickel-titanium alloy, cobalt-chromium alloy, and other metal materials commonly used in implantable devices.

[0060] Example 2

[0061] In this embodiment, the structure of the valve shaping ring 100 is roughly the same as that in Embodiment 1, such as... Figure 6 and Figure 7 As shown, the difference from Embodiment 1 is that:

[0062] The first mating part 151 is a circular groove. The second mating part 152 includes a pushing part 153 and a retaining member 154. The retaining member 154 includes a connecting tube 155 with a through structure. The end of the connecting tube 155 is provided with two hemispherical elastic retaining parts 156. When the two elastic retaining parts 156 are in a normal state, they can cooperate to form a spherical retaining body and can extend into or out of the first mating part 151. The pushing part 153 can pass through the connecting tube 155 and squeeze into the position between the two elastic retaining parts 156 so that the two elastic retaining parts 156 open up to each other and are confined within the first mating part 151.

[0063] Understandably, in the unassembled state, the radial length of the spherical structure formed by the two elastic retaining parts 156 is less than the slot width of the first mating part 151. Therefore, the elastic retaining parts 156 can smoothly extend into or out of the first mating part 151. When it is necessary to assemble and connect the various connecting parts 15, the elastic retaining parts 156 are extended into the first mating part 151, and the pushing part 153 is squeezed between the two elastic retaining parts 156 to make the two elastic retaining parts 156 move outward, increasing the radial length of the spherical structure formed by the two elastic retaining parts 156, so that the spherical structure of the elastic retaining parts 156 can be accommodated in the first mating part 151 and its extension is restricted. The spherical structure of the elastic retaining parts 156 can rotate in the first mating part 151, so that the subsequent connecting part 15 can rotate relative to the previous connecting part 15.

[0064] Compared with Embodiment 1, the valve shaping ring 100 is configured with the push part 153 and the retaining member 154 to allow for flexible assembly between the various connecting members 15, which can be assembled in clinical practice according to specific shaping needs, thus improving the flexibility of use.

[0065] Example 3

[0066] In this embodiment, the structure of the valve shaping ring 100 is roughly the same as that in Embodiment 1, such as... Figure 8 As shown, the difference from Embodiment 1 is that:

[0067] The first mating part 151 is a polygonal insertion groove that is recessed inward, and the width of the groove opening is smaller than the width inside the groove. The second mating part 152 is a polygonal insertion piece that protrudes outward and fits the insertion groove. The polygonal insertion groove and insertion piece structure facilitates cutting and processing, requires lower processing precision, reduces processing costs, and still provides good connection performance.

[0068] The above embodiments are not an exhaustive list based on the present invention, and there may be many other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A valve-forming ring, characterized in that, The valve repair ring includes a main ring and an outer layer, wherein the outer layer covers the outer periphery of the main ring; The main ring is a closed ring formed by the cooperation of a front ring segment, a rear ring segment, a left ring segment, and a right ring segment. The front and rear ring segments are less flexible than the left and right ring segments, and the rear ring segment is more flexible than the front ring segment. The left and right ring segments each include multiple sequentially arranged connectors. At least two adjacent connectors are movably connected with a gap at the connection. The connectors can extend and retract relative to another adjacent connector along the circumference of the main ring to change the circumference of the main ring, and the connectors can rotate relative to another adjacent connector to cause the main ring to deform along its own circumferential and axial directions. Both the left and right ring segments include a main body segment and two transition segments. The two transition segments are located at opposite ends of the main body segment and are respectively connected to the front and rear ring segments. The main body segment includes at least two connecting members, and the transition segment includes at least one connecting member. The overall deformation of the transition segment is less than the overall deformation of the main body segment. The spacing between two adjacent connectors of the main body section is smaller than the spacing between two adjacent connectors of the transition section; The length of the connector ranges from 2mm to 10mm.

2. The valve repair ring as described in claim 1, characterized in that, The deformation angle range of two adjacent connecting parts in the transition section is 1°~5°, and the overall deformation angle range of the transition section is 0°~25°. The deformation angle range of two adjacent connecting parts in the main body segment is 1° to 5°, and the overall deformation angle range of the main body segment is 0° to 30°.

3. The valve repair ring as described in claim 1, characterized in that, The connector has a first mating part and a second mating part at opposite ends. Two adjacent connectors are movably connected through the first mating part of the preceding connector and the second mating part of the following connector, and there is a movable gap at the connection.

4. The valve repair ring as described in claim 3, characterized in that, The first mating part and the second mating part are each provided in multiples at intervals along the circumferential direction of the connector, and the number of the first mating parts and the second mating parts of the connector in the main body section is greater than the number of the first mating parts and the second mating parts of the connector in the transition section.

5. The valve repair ring as described in claim 3, characterized in that, The first mating part is an inwardly recessed, arc-shaped insertion groove, and the width of the groove opening is smaller than the width inside the groove; the second mating part is an outwardly protruding, arc-shaped insertion piece that fits the insertion groove, and the insertion piece is rotatably inserted into the insertion groove with the aforementioned play gap.

6. The valve repair ring as described in claim 5, characterized in that, The insertion slot is inclined along the circumferential direction of the connector, and the angle between the center line of the insertion slot and the central axis of the connector in space is in the range of 1° to 5°.

7. The valve repair ring as described in claim 3, characterized in that, The first mating part is a circular groove, and the second mating part includes a pushing part and a retaining member. The retaining member includes a connecting tube with a through structure. The end of the connecting tube is provided with two hemispherical elastic retaining parts. When the two elastic retaining parts are in a normal state, they can cooperate to form a spherical retaining body and extend into or out of the first mating part. The pushing part can pass through the connecting tube and squeeze into the position between the two elastic retaining parts, so that the two elastic retaining parts open up to each other and are confined within the first mating part.

8. The valve repair ring as described in claim 3, characterized in that, The first mating part is a polygonal insertion groove that is recessed inward, and the width of the groove opening is smaller than the width inside the groove; the second mating part is a polygonal insertion member that protrudes outward and is adapted to the insertion groove, and the insertion member is rotatably inserted into the insertion groove and has the aforementioned play gap.

9. The valve repair ring according to any one of claims 1 to 8, characterized in that, The outer layer comprises a silicone layer and a polymer material layer, which are sequentially wrapped around the outer periphery of the main ring. The silicone layer is located between the polymer material layer and the main ring, and the polymer material layer extends outward from the main ring to form a suture portion.

Images