Knob valve heart apex pad

Abstract

The present application belongs to the technical field of medical devices, and particularly relates to a knob type valve heart apex gasket, which comprises: a take-up mechanism, the take-up mechanism being rotatable around a preset first axis as a pivot axis and being used for winding a heart apex connecting piece to adjust the tension of the heart apex connecting piece when rotating, the take-up mechanism comprising a locking wheel; a locking mechanism, the locking mechanism comprising a locking pin, the locking pin being capable of locking the locking wheel. The present application adopts the cooperation of the take-up mechanism and the locking mechanism, winds and binds the heart apex connecting piece through the take-up mechanism, controls the tension of the heart apex connecting piece by rotating the take-up mechanism, and prevents the heart apex connecting piece from losing the tension through the locking of the take-up mechanism by the locking mechanism.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a knob-type valve apical spacer. Background Technology

[0002] Mitral / tricuspid regurgitation is a heart valve disease in which the valves between the two chambers of the heart cannot close properly, causing blood to leak backward and flow through the valves. Mitral / tricuspid regurgitation can cause harm to the body and even threaten life, and mitral / tricuspid valve replacement has become an effective treatment method.

[0003] In some heart valve replacement prostheses, an apical cord is required. One end of the apical cord is connected to the replacement valve, and the other end extends to the outside of the heart and is fixed to the outside of the heart by an apical spacer. The apical cord prevents the replacement valve from being pushed into the atrium by blood flow pressure when it closes. At this time, the tension required by the apical cord is very important. Traditional methods of adjusting the apical cord generally involve fixing the apical cord directly to the anchor on the outside of the heart by tying a knot or other methods. This method has low operational precision and is difficult to fix. Pulling and fixing the apical cord are done separately. That is, it is necessary to maintain the tension of the apical cord while fixing the cord. This can easily cause changes in the tension of the apical cord, increasing the difficulty of the operation.

[0004] Therefore, there is an urgent need for a valve apex pad that can effectively control the tension of the apex cord and quickly and effectively fix the apex cord. Summary of the Invention

[0005] The present invention addresses the technical problem of existing apical valve pads having difficulty maintaining stable tension while securing the apical cord, and aims to provide a knob-type apical valve pad.

[0006] To address the aforementioned technical problems, one aspect of the present invention provides a knob-type apical valve ventricular ...

[0007] A take-up mechanism, which is rotatable about a preset first axis and is used to wind the core connector during rotation to adjust its tension. The take-up mechanism includes a locking wheel.

[0008] A locking mechanism, the locking mechanism including a locking pin, the locking pin being capable of locking the locking wheel.

[0009] Optionally, in the knob-type apical valve pad as described above, the locking wheel has a plurality of locking teeth evenly distributed circumferentially. The locking teeth include a transition surface and a locking surface. When the locking wheel rotates in the forward direction, the transition surface of the locking teeth drives the end of the locking pin to move away from the locking wheel and pass over the locking teeth. The tooth length direction of the locking teeth is parallel to the axial direction of the locking wheel, and the locking surface is inclined on the circumferential surface of the locking wheel.

[0010] The end of the locking pin can be engaged between adjacent locking teeth. The side of the locking pin contacts and abuts against the locking surface of one of the locking teeth. The locking surface is parallel to the axial movement direction of the locking pin. Through the cooperation between the locking surface and the locking pin, the locking wheel is prevented from rotating in the opposite direction.

[0011] Optionally, in the knob-type apical valve pad as described above, the transition surface and the end of the locking pin are smooth surfaces that correspond to each other, and the transition surface and the end of the locking pin are in surface contact when they come into contact.

[0012] Optionally, in the knob-type apical valve shim as described above, both the transition surface and the end of the locking pin are planar.

[0013] Optionally, in the knob-type valve apical pad as described above, the transition surface includes a tooth side portion connected to the locking wheel and a tooth tip portion away from the locking wheel, and the transition surface extends obliquely from the tooth side portion to the tooth tip portion to form the transition surface, and the oblique direction of the transition surface of each locking tooth is the same.

[0014] The locking surface includes a locking bottom connected to the locking wheel and a locking top away from the locking wheel. The locking surface extends obliquely from the locking bottom to the locking top, and the locking surfaces of each locking tooth have the same oblique direction.

[0015] The locking tooth also includes a connecting surface, which extends curvedly from the top of the tooth to the top of the locking tooth to form the connecting surface.

[0016] Optionally, in the knob-type apical valve shim as described above, the knob-type apical valve shim further includes:

[0017] A base plate, one side of which is rotatably connected to the locking wheel;

[0018] A wire through hole is provided, which passes through the middle of the substrate. The through direction of the wire through hole is parallel to the axial direction of the locking wheel. The wire through hole allows the core connector to pass through from the other side of the substrate and connect to the take-up mechanism.

[0019] Optionally, in the knob-type apical valve pad as described above, the centerline of the thread passage hole is parallel to the first axis and has a preset distance, causing the thread take-up mechanism to be eccentrically disposed on the substrate.

[0020] Optionally, in the knob-type apical valve pad as described above, the substrate is a circular or near-circular structure, the outer diameter of the substrate is D1 and the center is O, and the through hole is located within a range with center O and radius D2, where D2≤D1 / 2, preferably, D2≤D1 / 3.

[0021] Optionally, in the knob-type apical valve shim as described above, the knob-type apical valve shim further includes:

[0022] A top cover is detachably fitted onto one side of the substrate, and a locking cavity is formed between the top cover and the substrate. The ends of the locking wheel and the locking pin are both located within the locking cavity.

[0023] Optionally, in the knob-type apical valve pad as described above, the base plate and the top cover are respectively provided with a plurality of suture holes, and the base plate and the top cover are fixedly connected by sutures passing through the suture holes.

[0024] Optionally, in the knob-type apical valve pad as described above, a felt sheet is provided on the other side of the base plate, and the felt sheet is preferably fixed to the base plate by passing through the suture hole with a suture thread.

[0025] Optionally, in the knob-type apical valve pad as described above, a limiting block is provided on the side of the upper cover facing the base plate, and a positioning post is provided on the side of the base plate facing the upper cover. The positioning post and the limiting block cooperate with each other to achieve the positioning of the upper cover and the base plate.

[0026] Optionally, in the knob-type apical valve insert as described above, the positioning post has a hollow cylindrical structure, and the through hole in the middle of the positioning post is one of the suture holes.

[0027] Optionally, in the knob-type apical valve pad as described above, the through hole extends and penetrates to the upper cover, and the upper cover is also provided with a perforation.

[0028] The take-up mechanism also includes an operating lever, which is disposed on the side of the locking wheel. The operating lever extends to the outside of the upper cover through the perforation. When the locking wheel is rotated by the operating lever, the operating lever is wound around the core connector.

[0029] Optionally, in the rotary valve apical spacer as described above, the operating lever and the locking wheel are an integral structure.

[0030] Optionally, in the knob-type apical valve ventricular ...

[0031] Optionally, in the rotary valve apical ventricular ...

[0032] Optionally, in the knob-type apical valve pad as described above, the operating lever is provided with a transverse hole for the apical connector to pass through, and the center line of the transverse hole is perpendicular to the first axis.

[0033] Optionally, in the knob-type apical valve insert as described above, the take-up mechanism further includes a turntable, which is disposed at the outer end of the operating lever, and the outer diameter of the turntable is larger than the outer diameter of the operating lever.

[0034] Optionally, in the knob-type apical valve pad described above, the turntable is provided with a non-circular insertion hole, the outer end of the operating rod is shaped to match the inner wall of the insertion hole, and the turntable is plugged into the operating rod.

[0035] Optionally, in the knob-type apical valve pad as described above, the turntable is provided with a pair of slots, the slots are connected to both sides of the turntable along the first axis direction, the slots are also connected to the outer peripheral surface of the turntable, so that the slots have openings exposed to the outer peripheral surface of the turntable, and the connecting line between the openings of the pair of slots is parallel to the center line of the transverse hole.

[0036] The apex connector can be threaded through the transverse hole and a pair of slots several times to achieve fixation.

[0037] Optionally, in the knob-type apical valve pad as described above, the turntable is provided with a plurality of suture holes, and a felt sheet is provided on the side of the turntable away from the operating lever. The felt sheet is preferably fixedly connected to the turntable by sutures passing through the suture holes.

[0038] Optionally, in the rotary valve apical ventricular ...

[0039] Optionally, in the knob-type apical valve pad as described above, a guide groove is provided on one side of the base plate for the locking pin to move linearly relative to the locking wheel, and the locking pin is slidably connected to the guide groove along the axial direction.

[0040] The elastic element is sleeved on the outer periphery of the locking pin and located in the guide groove. The inner end of the elastic element is restricted by the locking pin, and the outer end of the elastic element abuts against the outer end of the guide groove.

[0041] Optionally, in the knob-type apical valve ventricular ...

[0042] Optionally, in the knob-type apical valve shim as described above, an operating structure is provided at the end of the locking pin away from the end.

[0043] Optionally, in the knob-type apical valve pad described above, when both the locking pin and the elastic element are made of metal, the locking pin and the elastic element are made of the same material.

[0044] Optionally, in the knob-type apical valve shim as described above, the material used for the end of the locking pin has greater wear resistance than the material used for the locking teeth.

[0045] Optionally, in the knob-type apical valve pad as described above, a pair of limiting blocks are provided on the side of the upper cover facing the base plate. When the upper cover is closed on the base plate, the pair of limiting blocks are respectively engaged with the two sides of the guide groove.

[0046] The positive and progressive effects of this invention are as follows:

[0047] 1. The present invention employs a take-up mechanism and a locking mechanism in combination. The take-up mechanism gathers and winds the core connector, and the tension of the core connector is controlled by rotating the take-up mechanism. The locking mechanism locks the take-up mechanism to prevent the core connector from losing tension.

[0048] 2. The structural design of the locking teeth and locking pins not only prevents the locking wheel from rotating in the opposite direction, but also ensures that the compressive force generated when the locking pin abuts against the locking surface is perpendicular to the axial direction of the locking pin, preventing any force from pushing the locking pin away from the locking wheel. Therefore, it can withstand greater tension in the core connector. Furthermore, this design allows the locking pin to quickly insert between two adjacent locking teeth under the action of the elastic element when the locking wheel rotates and the locking surface is parallel to the axial direction of the locking pin. This results in a rapid response.

[0049] 3. The transition surface and the end of the locking pin are smooth surfaces that mate with each other, resulting in surface contact, a large contact area, and high stability. Under the action of the elastic element, the locking pin rests stably against the transition surface, especially important for the apex of the heart during heartbeats, where the stability provided by surface contact is particularly prominent. The smooth surface is preferably flat, and neither the locking pin nor the locking teeth have any concavity, ensuring that both have high strength.

[0050] 4. The take-up mechanism and the corresponding locking mechanism are eccentrically set on the substrate. The wire-passing hole for the core connector is set within a certain range in the middle of the substrate, so that the wire-passing hole on the substrate and the take-up mechanism are non-coaxial. This allows the substrate to be subjected to relatively uniform force around its periphery under the tension of the core connector, preventing the substrate from tilting up on one side.

[0051] If the wire guide hole is not located in the center, the core connector needs path adjustment to ensure it passes through the center of the substrate before entering the wire guide hole. However, each bending adjustment causes friction between the core connector and the adjustment component, significantly increasing the risk of wear and reducing its safety. This invention solves this problem simply and effectively by using an eccentric arrangement of the take-up and locking mechanisms, allowing the wire guide hole to be located directly in the center of the substrate.

[0052] Furthermore, due to the eccentric setting of the take-up mechanism and the locking mechanism, the space of the eccentric position is smaller than the space of the center position of the substrate. By limiting the wire passage hole to be adjustable within a certain range, the uniform force on the periphery of the substrate is ensured, while providing a larger installation space for the take-up mechanism and the locking mechanism.

[0053] 5. The locking cavity formed between the top cover and the base plate can protect the ends of the locking wheel and the locking pin. The locking wheel being confined within the locking cavity also increases the stability of the system.

[0054] The locking wheel rotates via an operating lever, and as the lever rotates, the mandrel connector winds around it. In particular, the integrated structure of the operating lever and locking wheel enhances system stability.

[0055] The stepped design between the locking wheel and the operating lever effectively prevents the core connector from accidentally entering the upper cover or the gap between the perforation and the operating lever, which could obstruct the function of the core gasket.

[0056] 6. The turntable design reduces the torque when rotating the operating lever, making it easier to rotate. At the same time, the large-diameter turntable and the top cover restrict the core connector to the operating lever between the two, preventing the core connector from detaching from the operating lever.

[0057] A non-circular hole is made on the turntable, and the outer end of the operating lever is set to a corresponding shape to insert into the non-circular hole of the turntable, preventing the turntable from rotating relative to the operating lever.

[0058] The slots on the turntable correspond to the positions of the horizontal holes. A core connector passes through the horizontal hole, and then sequentially enters a pair of slots, preventing the turntable from separating from the operating lever. The horizontal hole of this invention can allow the core connector to pass through multiple times. Alternatively, the core connector can first pass through the wire hole and then through the horizontal hole, then through the slots, and finally return to its position where it entered the horizontal hole, where it is knotted and secured. The core connector further secures the turntable, and it prevents the core connector from rotating relative to the operating lever. Furthermore, the tension of the core connector ensures a more secure connection between the turntable and the operating lever.

[0059] 7. The design of the elastic element of the locking mechanism ensures that when the locking wheel rotates in the forward direction, the locking pin moves away from the locking wheel under the action of the locking teeth and compresses the elastic element. After the locking pin crosses the locking teeth, under the action of the elastic element, the locking pin quickly inserts again between the adjacent locking teeth to prevent the locking wheel from reversing, that is, only the forward rotation of the locking teeth is allowed.

[0060] The locking pin extends out of the base plate, allowing operators to intervene in locking the locking wheel through the extended locking pin portion, thus enabling reverse adjustment of the locking wheel. Attached Figure Description

[0061] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0062] Figure 1 This is a schematic diagram of an overall structure of the present invention;

[0063] Figure 2 for Figure 1 Exploded view;

[0064] Figure 3 for Figure 1 Further exploded view;

[0065] Figure 4 for Figure 1 Partial 3D view of the take-up mechanism;

[0066] Figure 5 for Figure 1 A top-view diagram of the internal structure;

[0067] Figure 6 for Figure 5 A magnified view of a portion of the image;

[0068] Figure 7 for Figure 1 A sectional view;

[0069] Figure 8 for Figure 1 A bottom view;

[0070] Figure 9 for Figure 1 A three-dimensional view of a turntable;

[0071] Figure 10 This is a path diagram of the apical connector of the present invention;

[0072] Figure 11 This is another front view of the present invention;

[0073] Figure 12 This is a schematic diagram illustrating one application of the present invention. Detailed Implementation

[0074] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0075] It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0076] In the description of this invention, it should be noted that the directional terms such as "outer side", "middle section", "inner", "outer" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. They should not be construed as limiting the specific protection scope of this invention.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this invention, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0078] Reference Figures 1 to 11 This invention provides a knob-type apical valve pad, including a take-up mechanism 100 and a locking mechanism 200.

[0079] The take-up mechanism 100 is rotatable about a preset first axis and is used to wind the core connector 800 during rotation to adjust its tension. The take-up mechanism 100 includes a locking wheel 110.

[0080] The locking mechanism 200 includes a locking pin 210, which can lock the locking wheel 110.

[0081] In use, the take-up mechanism 100 cooperates with the locking mechanism 200. The take-up mechanism 100 winds and coils the core connector 800. The tension of the core connector 800 is controlled by rotating the take-up mechanism 100. The core connector 800 gradually tightens during the winding process, thus achieving the effect of adjusting the tension. When the take-up mechanism 100 is rotated to any angle, the locking mechanism 200 can lock the take-up mechanism 100 to prevent the core connector 800 from losing tension.

[0082] In some embodiments, the apical connector 800 is a flexible apical cord, one end of which is connected to the replacement valve, and the other end extends to the outside of the heart and is fixed to the outside of the heart by the knob-type valve apical pad of the present invention.

[0083] In some embodiments, refer to Figures 4 to 7 The locking wheel 110 has a plurality of locking teeth 120 evenly distributed along its circumference. Each locking tooth 120 includes a transition surface 121 and a locking surface 122. When the locking wheel 110 rotates in the forward direction, the transition surface 121 of the locking tooth 120 drives the end of the locking pin 210 to move away from the locking wheel 110 and pass over the locking tooth 120. The tooth length direction of the locking tooth 120 is parallel to the axial direction of the locking wheel 110, and the locking surface 122 is inclinedly disposed on the circumferential surface of the locking wheel 110.

[0084] Specifically, such as Figure 4 As shown, the tangent at any connection point between the locking surface 122 and the locking wheel 110 is A, and the extension direction of the locking surface 122 from the connection point outward (away from the locking wheel 110) is B. Then, the intersection of A and B is an acute angle that is not a right angle.

[0085] like Figure 4 As shown, the tooth length direction of the locking tooth 120 is F, and the axial direction of the locking wheel 110 is the direction where the first axis D is located. Therefore, the direction F is parallel to the direction where the first axis D is located.

[0086] Reference Figures 5 to 7 The end 210a of the locking pin 210 can be engaged between adjacent locking teeth 120. The side of the locking pin 210 contacts and abuts against the locking surface 122 of one of the locking teeth 120. The locking surface 122 is parallel to the axial movement direction of the locking pin 210. The locking surface 122 cooperates with the locking pin 210 to prevent the locking wheel 110 from rotating in the opposite direction.

[0087] Specifically, during the forward rotation of the locking wheel 110, the end 210a of the locking pin 210 can be locked or disengaged from the adjacent locking teeth 120. When the locking pin 210 moves towards the locking wheel 110 to the first preset position, it engages with one of the adjacent locking teeth 120 to achieve locking. When the locking pin 210 moves towards the locking wheel 110 to the second preset position, it disengages from the adjacent locking tooth 120. By engaging the locking pin 210 with the adjacent locking teeth 120, when the locking wheel 110 rotates to the rotation angle that matches the tension of the mandrel connector 800, the position of the locking pin 210 can be controlled to lock it with the adjacent locking teeth 120 at that point.

[0088] This invention, through the aforementioned structural design of the locking teeth 120 and the locking pin 210, not only prevents the locking wheel 110 from rotating in the opposite direction, but also ensures that when the locking pin 210 abuts against the locking surface 122, the resulting compressive force is perpendicular to the axial movement direction of the locking pin 210, preventing any component force from pushing the locking pin 210 away from the locking wheel 110. Therefore, it can withstand a greater pulling force from the core connector 800. Moreover, with this design, when the locking wheel 110 rotates and the locking surface 122 is parallel to the axial movement direction of the locking pin, the locking pin 210, under the action of the elastic element 220, quickly inserts between two adjacent locking teeth 120, resulting in a rapid response.

[0089] In some embodiments, the forward rotation of the locking wheel 110 is not limited to clockwise or counterclockwise rotation. For example, Figure 5 The locking wheel 110 shown rotates clockwise.

[0090] In some embodiments, the transition surface 121 and the end 210a of the locking pin 210 are smooth surfaces that correspond to each other. Preferably, the transition surface 121 and the end 210a of the locking pin 210 are in surface contact. Surface contact has a large contact area and high stability. Under the action of the elastic element 220, the locking pin 210 is stably pressed against the transition surface 121. Especially for the apex of the heart pad that is accompanied by the heartbeat, the stability brought by surface contact is particularly prominent.

[0091] In some embodiments, the transition surface 121 is a convex arc surface, and the end 210a of the locking pin 210 is a concave arc surface.

[0092] In some embodiments, refer to Figure 6 Both the transition surface 121 and the end 210a of the locking pin 210 are flat. The flat design ensures that neither the end 210a of the locking pin 210 nor the transition surface 121 has any concavity or convexity, thus giving both high strength.

[0093] In some embodiments, refer to Figure 4When both the transition surface 121 and the end 210a of the locking pin 210 are flat:

[0094] The transition surface 121 includes a tooth side portion 1211 connected to the locking wheel 110 and a tooth top portion 1212 away from the locking wheel 110. The transition surface 121 extends obliquely from the tooth side portion 1211 to the tooth top portion 1212 to form the transition surface 121. The oblique direction of the transition surface 121 of each locking tooth 120 is the same.

[0095] The locking surface 122 includes a locking bottom 1221 connected to the locking wheel 110 and a locking top 1222 away from the locking wheel 110. The locking surface 122 extends obliquely from the locking bottom 1221 to the locking top 1222 to form the locking surface 122. The locking surfaces 122 of each locking tooth 120 have the same oblique direction.

[0096] The locking tooth 120 also includes a connecting surface 123, which extends curvedly from the tooth tip 1212 to the locking tip 1222 to form the connecting surface 123.

[0097] When the locking wheel 110 rotates forward, the transition surface 121 of the locking tooth 120 drives the end 210a of the locking pin 210 to move away from the locking wheel 110. During this movement, the end 210a of the locking pin 210 moves sequentially along the transition surface 121 and the connecting surface 123. After passing the locking tooth 120, the end 210a of the locking pin 210 moves towards the locking wheel 110 and engages with another locking tooth adjacent to the locking tooth 120. When the locking wheel 110 stops rotating, the side of the locking pin 210 contacts and abuts against the locking surface 122 of the locking tooth 120, locking the locking wheel 110. If the locking wheel 110 continues to rotate forward, the above movement continues.

[0098] In some embodiments, if the transition surface 121 is a convex arc surface and the end 210a of the locking pin 210 is a concave arc surface, the transition surface 121 extends obliquely from the tooth side 1211 to the tooth tip 1212 to form the transition surface 121. The locking tooth 120 does not contain a connecting surface 123, and the locking tip 1222 of the locking surface 122 coincides with the tooth tip 1212 of the transition surface 121. The rest of the structure is the same as when both the transition surface 121 and the end 210a of the locking pin 210 are planar.

[0099] In some embodiments, refer to Figures 1 to 3 The knob-type apical valve pad also includes a base plate 300 and a wire hole 400.

[0100] A locking wheel 110 is rotatably connected to one side of the substrate 300, meaning that the substrate 300 does not rotate when the locking wheel 110 rotates. The rotatable connection between the two can be, for example: Figure 2 and Figure 3A rotating shaft 320 is provided on the substrate 300 shown, and a corresponding rotating hole 111 is provided on the locking wheel 110, or a rotating hole is provided on the substrate 300, and a corresponding rotating shaft is provided on the locking wheel 110.

[0101] The wire through hole 400 passes through the middle of the substrate 300. The through direction of the wire through hole 400 is parallel to the axial direction of the locking wheel 110, that is, the axial direction of the wire through hole 400 is parallel to the axial direction of the locking wheel 110.

[0102] The other side of the substrate 300 is in contact with the heart. The apex connector 800 passes through the wire hole 400 from the other side of the substrate 300 and is connected to the take-up mechanism 100.

[0103] In some embodiments, refer to Figure 10 The center line C of the wire hole 400 is parallel to the first axis D and has a preset distance from it, meaning they do not coincide. In other words, the wire hole 400 and the locking wheel 110 are not coaxially configured, resulting in... Figure 5 and Figure 7 As shown, the take-up mechanism 100 is eccentrically mounted on the substrate 300.

[0104] The take-up mechanism 100 and its corresponding locking mechanism 200 are eccentrically disposed on the substrate 300. The through hole 400 for the core connector 800 is located in the middle of the substrate 300, making the through hole 400 on the substrate and the take-up mechanism 100 non-coaxial. This allows the substrate 300 to be subjected to relatively uniform force around its periphery under the tension of the core connector 800, preventing one side of the substrate 300 from tilting up. If the through hole 400 is not located in the middle, the core connector 800 needs to undergo path adjustment so that it first passes through the middle of the substrate 300 and then enters the through hole 400. However, each bending adjustment of the core connector 800 causes friction between the core connector 800 and the component adjusting its position, greatly increasing the wear risk of the core connector 800 and reducing its safety. The present invention solves the above-mentioned problem simply and effectively by setting the wire take-up mechanism 100 and the locking mechanism 200 eccentrically, so that the wire hole 400 is located directly in the middle of the substrate 300.

[0105] In some embodiments, refer to Figure 8 The substrate 300 has a circular or near-circular structure. The outer diameter of the substrate 300 is D1 and the center is O. The through hole 400 is located within a radius of D2 with O as the center, where D2≤D1 / 2, preferably D2≤D1 / 3.

[0106] Due to the eccentric arrangement of the take-up mechanism 100 and the locking mechanism 200, the space of their eccentric position relative to the center position of the substrate 300 becomes smaller. By limiting the wire passage hole 400 to be adjustable within a certain range, the force on the periphery of the substrate 300 is ensured to be uniform, while providing a larger installation space for the take-up mechanism 100 and the locking mechanism 200.

[0107] In some embodiments, refer to Figures 1 to 3 The rotary valve apical spacer also includes a top cover 500, which is detachably fitted onto one side of the base plate 300. A locking cavity is formed between the top cover 500 and the base plate 300, and the ends of the locking wheel 110 and the locking pin 210 are located within the locking cavity. The locking cavity formed between the top cover 500 and the base plate 300 protects the ends of the locking wheel 110 and the locking pin 210, and confining the locking wheel 110 within the locking cavity also increases the stability of the system.

[0108] In some embodiments, refer to Figures 1 to 3 , Figure 5 , Figures 7 to 9 The substrate 300 is provided with a plurality of stitching holes 310, and the top cover 500 is provided with a plurality of stitching holes 510. The substrate 300 and the top cover 500 are fixedly connected by stitching lines passing through the stitching holes 310 and stitching holes 510.

[0109] The positions of suture holes 310 and 510 should not affect the normal movement of other components. Furthermore, the use of sutures in this invention eliminates the need for detachable rigid materials like screws to connect and fix the apical spacer, effectively increasing its safety. This is especially important for a beating heart, as any detachable component could potentially dislodge due to the heart's rhythm.

[0110] In some embodiments, refer to Figure 11 A felt sheet 330 is provided on the other side of the substrate 300. The felt sheet 330 is preferably fixedly connected to the substrate 300 via a stitching thread passing through a stitching hole 310. For example... Figure 12 As shown, the other side of the substrate 300 needs to come into contact with the heart. Therefore, the softness of the felt 330 allows the apical spacer to make better contact with the heart and reduce the impact of the heartbeat on the apical spacer.

[0111] In some embodiments, refer to Figure 2 and Figure 3 A limiting block 520 is provided on the side of the upper cover 500 facing the substrate 300, and a positioning post 340 is provided on the side of the substrate 300 facing the upper cover 500. The positioning post 340 and the limiting block 520 cooperate with each other to achieve the positioning of the upper cover 500 and the substrate 300.

[0112] In some embodiments, refer to Figure 7 The positioning post 340 has a hollow cylindrical structure, and the through hole in the middle of the positioning post 340 is one of the suture holes 310. The combination of the positioning post 340 and the suture hole 310 not only provides positioning but also forms a path for the suture to pass through.

[0113] In some embodiments, refer to Figures 1 to 3 , Figure 10 The wire hole 400 extends and penetrates to the top cover 500. At this time, the core connector 800 can pass through the wire hole 400 from the other side of the substrate 300, sequentially through the substrate 300 and the top cover 500, and then connect to the take-up mechanism 100.

[0114] Reference Figures 1 to 3 The top cover 500 also has perforations 530.

[0115] Reference Figures 1 to 4 The take-up mechanism 100 also includes an operating lever 130, which is located on the side of the locking wheel 110. The operating lever 130 extends to the outside of the upper cover 500 through the through hole 530. When the locking wheel 110 is rotated by the operating lever 130, the operating lever 130 is wound around the base plate 300 by the core connector 800 through the wire hole 400 from the other side of the base plate 300, passing through the base plate 300 and the upper cover 500 in sequence.

[0116] In some embodiments, the operating lever 130 and the locking wheel 110 are an integral structure to improve stability.

[0117] In some embodiments, the diameter of the perforation 530 is smaller than the outer diameter of the locking wheel 110, so as to restrict the locking wheel 110 between the top cover 500 and the base plate 300, thereby increasing the stability of the system.

[0118] In some embodiments, refer to Figure 4 A step 140 is provided between the operating lever 130 and the locking wheel 110. The diameter of the step 140 is the same as the diameter of the through hole 530. Figure 10 As shown, when the operating lever 130 extends out of the through hole 530, the upper surface of the step 140 is flush with the upper cover 500. The step 140 between the locking wheel 110 and the operating lever 130 effectively prevents the core connector 800 from accidentally entering the upper cover 500 or the gap between the through hole 530 and the operating lever 130, thus preventing the core gasket from being obstructed.

[0119] In some embodiments, refer to Figure 4 The operating lever 130 is provided with a transverse hole 131 for the apex connector 800 to pass through. The center line E of the transverse hole 131 is perpendicular to the first axis D. The transverse hole 131 is used for the apex connector 800 to pass through, and the apex connector 800 can be knotted and fixed after passing through the transverse hole 131.

[0120] In some embodiments, refer to Figures 1 to 3 The take-up mechanism 100 also includes a turntable 150, which is located at the outer end of the operating lever 130. The outer diameter of the turntable 150 is larger than that of the operating lever 130. The design of the turntable 150 reduces the torque when rotating the operating lever 130, making it easier to rotate. At the same time, the large-diameter turntable 150 and the upper cover 500 restrict the core connector 800 to the operating lever 130 between them, preventing the core connector 800 from detaching from the operating lever.

[0121] In some embodiments, refer to Figure 9 The turntable 150 has a non-circular insertion hole 151. The outer end of the operating lever 130 is shaped to match the inner wall of the insertion hole 151. The turntable 150 and the operating lever 130 are connected by insertion. The turntable 150 has a non-circular hole, and the outer end of the operating lever 130 is shaped to fit into the non-circular hole of the turntable 150, preventing the turntable 150 from rotating relative to the operating lever 130.

[0122] In some embodiments, the socket 151 is a non-circular hole, and the cross-sectional shape of the socket 151 is triangular, quadrilateral, pentagonal, hexagonal, or irregular hole, etc.

[0123] In some embodiments, refer to Figure 9 A pair of slots 152 are provided on the turntable 150. The slots 152 connect both sides of the turntable 150 along the first axis and also connect to the outer peripheral surface of the turntable 150, so that the slots 152 have openings 153 exposed on the outer peripheral surface of the turntable 150. The connecting line between the openings 153 of the pair of slots 152 is parallel to the center line of the transverse hole 131, that is, the opening of the transverse hole 131 is below the opening 153. The core connector 800 can pass through the transverse hole 131 and the pair of slots 152 several times to achieve fixation.

[0124] The position of the slot 152 of the turntable 150 corresponds to the position of the horizontal hole 131. The core connector 800 passes through the horizontal hole 131, and then the core connector 800 sequentially enters a pair of slots 152, preventing the turntable 150 from separating from the operating lever 130. The horizontal hole 131 of this invention can pass through the core connector 800 multiple times. For example... Figure 10 As shown, the core connector 800 can also first pass through the wire hole 400 and then into the horizontal hole 131, and then pass through a pair of slots 152 in sequence. The core connector 800 then returns to the position where it entered the horizontal hole 131, where it is knotted and fixed to the core connector 800 entering the horizontal hole 131. The core connector 800 further secures the turntable 150, and the core connector 800 cannot rotate relative to the operating lever 130. Furthermore, the tension of the core connector 800 makes the turntable 150 more securely connected to the operating lever 130.

[0125] In some embodiments, refer to Figure 9 The turntable 150 has several sewing holes 154. (Refer to...) Figure 11 A felt sheet 155 is provided on the side of the turntable 150 away from the operating lever 130. The felt sheet 155 is preferably fixedly connected to the turntable 150 via a stitch passing through a stitch hole 154. Although... Figure 12 As shown, after the apical spacer is installed, the side of the turntable 150 away from the operating lever 130 does not contact the heart. However, the apical spacer is relatively close to the inner side of the chest cavity after installation. With the heart beating, the apical spacer poses a risk of impacting the chest cavity. The softness of the felt pad 155 effectively prevents this risk. Furthermore, the use of sutures eliminates the need for detachable rigid materials like screws for connection and fixation of the apical spacer, effectively increasing its safety. Especially for a beating heart, any detachable component could potentially dislodge under the influence of the heart's movements.

[0126] In some embodiments, in order to maintain a good locking effect, the locking pin 210 of the locking mechanism 200 is configured to move linearly in a direction perpendicular to the first axis.

[0127] In some embodiments, refer to Figures 1 to 3 , Figures 5 to 7 The locking mechanism 200 also includes an elastic element 220, which applies a force to the locking pin 210 in the opposite direction of its movement. The design of the elastic element 220 is such that when the locking wheel 110 rotates in the forward direction, the locking pin 210 moves away from the locking wheel 110 under the action of the locking teeth 120 and compresses the elastic element 220. After the locking pin 210 crosses the locking teeth 120, under the action of the elastic element 220, the locking pin 210 quickly re-inserts between the adjacent locking teeth 120, preventing the locking wheel 110 from reversing, that is, only allowing the locking teeth 120 to rotate in the forward direction.

[0128] In some embodiments, refer to Figures 1 to 3 , Figures 5 to 7 A guide groove 350 is provided on one side of the substrate 300 for the locking pin 210 to move linearly relative to the locking wheel 110. The locking pin 210 is slidably connected to the guide groove 350 along the axial direction of the locking pin 210. An elastic element 220 is sleeved on the outer periphery of the locking pin 210 and located in the guide groove 350. The inner end of the elastic element 220 is restricted by the locking pin 210, and the outer end of the elastic element 220 abuts against the outer end of the guide groove 350.

[0129] In some embodiments, the outer diameter of a portion of the locking pin 210 near its end is larger than the rest, such that a limiting groove is formed on the locking pin 210 to restrict the inner end of the elastic element 220.

[0130] In some embodiments, refer to Figure 7One end of the locking pin 210, away from the end 210a, extends out of the substrate 300. The design of the locking pin 210 extending out of the substrate 300 allows the operator to intervene in the locking of the locking pin 210 on the locking wheel 110 through the extended part of the locking pin 210, thereby realizing the reverse adjustment of the locking wheel 110.

[0131] In some embodiments, an operating structure is provided at the end of the locking pin 210 away from the end 210a. An operator can use the operating structure to intervene in the locking of the locking pin 210 onto the locking wheel 110.

[0132] In some embodiments, an operating through hole 211 is provided at one end of the locking pin 210 away from the end 210a as an operating structure. The operating component is accommodated in the operating through hole 211 to drive the locking pin 210 axially away from the locking wheel 110, thereby unlocking or disengaging the locking wheel 110.

[0133] In some embodiments, when both the locking pin 210 and the elastic element 220 are made of metal, the locking pin 210 and the elastic element 220 are made of the same material to prevent electrochemical corrosion of both.

[0134] For example, both the stop pin 210 and the elastic element 220 are made of stainless steel.

[0135] In some embodiments, since the locking wheel 110 rotates once, one locking tooth 120 contacts the locking pin 210 only once, while the locking pin 210 contacts multiple locking teeth 120 multiple times. Therefore, the wear resistance of the material used for the end 210a of the locking pin 210 is greater than that of the material used for the locking teeth 120.

[0136] In some embodiments, refer to Figure 2 and Figure 7 A pair of limiting blocks 520 are provided on the side of the upper cover 500 facing the substrate 300. When the upper cover 500 is closed on the substrate 300, the pair of limiting blocks 520 are respectively engaged with the two sides of the guide groove 350.

[0137] In some embodiments, refer to Figure 12 One end of the apical connector 800 is connected to the replacement valve 900, and the other end of the apical connector 800 extends to the outside of the heart and is then connected and fixed to the knob-type valve apical pad 10 of the present invention. (See reference...) Figure 10 After passing through the wire hole 400, the core connector 800 passes through the base plate 300 and the top cover 500 in sequence, then passes through the horizontal hole 131 on the operating rod 130, and after passing around a pair of slots 152, it is knotted and fixed with the core connector 800 that enters the horizontal hole 131.

[0138] The rotating turntable 150 drives the operating lever 130 and the locking wheel 110 to rotate in the forward direction. The core connector 800 gradually wraps around the outer wall of the operating lever 130. At the same time, the end 210a of the locking pin 210 passes over each locking tooth 120 in sequence. Under the action of the locking pin 210, the turntable 150, the operating lever 130 and the locking wheel 110 cannot rotate in the reverse direction.

[0139] When the mandrel connector 800 is rotated forward to the point where it has the target tension, the rotation stops and the locking pin 210 locks the locking wheel 110. The locking wheel will not rotate in the opposite direction, thus maintaining a stable target tension for the mandrel connector 800 while effectively fixing the mandrel connector 800.

[0140] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A knob-type apical valve pad, characterized in that, include: A take-up mechanism, which is rotatable about a preset first axis and is used to wind the core connector during rotation to adjust its tension. The take-up mechanism includes a locking wheel. A locking mechanism, the locking mechanism including a locking pin, the locking pin being capable of locking the locking wheel; The knob-type apical valve pad also includes: A base plate, one side of which is rotatably connected to the locking wheel; A wire through hole is provided, which passes through the middle of the substrate. The through direction of the wire through hole is parallel to the axial direction of the locking wheel. The wire through hole allows the core tip connector to pass through from the other side of the substrate and connect to the wire take-up mechanism. The centerline of the wire-passing hole is parallel to the first axis and has a preset distance, causing the wire-retracting mechanism to be eccentrically disposed on the substrate.

2. The knob-type apical valve ventricular ... The locking wheel has a plurality of locking teeth evenly distributed along its circumference. Each locking tooth includes a transition surface and a locking surface. When the locking wheel rotates in the forward direction, the transition surface of the locking tooth drives the end of the locking pin to move away from the locking wheel and pass over the locking tooth. The tooth length direction of the locking tooth is parallel to the axial direction of the locking wheel. The locking surface is inclinedly disposed on the circumferential surface of the locking wheel. The end of the locking pin can be engaged between adjacent locking teeth. The side of the locking pin contacts and abuts against the locking surface of one of the locking teeth. The locking surface is parallel to the axial movement direction of the locking pin. Through the cooperation between the locking surface and the locking pin, the locking wheel is prevented from rotating in the opposite direction.

3. The knob-type apical valve ventricular pad as described in claim 2, characterized in that, The transition surface and the end of the locking pin are smooth surfaces that correspond to each other and make contact with each other. When the transition surface and the end of the locking pin come into contact, it is a surface contact.

4. The knob-type apical valve ventricular pad as described in claim 3, characterized in that, Both the transition surface and the end of the locking pin are flat.

5. The knob-type apical valve ventricular pad as described in claim 3, characterized in that, The transition surface includes a tooth side portion connected to the locking wheel and a tooth top portion away from the locking wheel. The transition surface extends obliquely from the tooth side portion to the tooth top portion, and the oblique direction of the transition surface of each locking tooth is the same. The locking surface includes a locking bottom connected to the locking wheel and a locking top away from the locking wheel. The locking surface extends obliquely from the locking bottom to the locking top, and the locking surfaces of each locking tooth have the same oblique direction. The locking tooth also includes a connecting surface, which extends curvedly from the top of the tooth to the top of the locking tooth to form the connecting surface.

6. The knob-type apical valve ventricular ... The substrate has a circular or near-circular structure, with an outer diameter of D1 and a center of O. The through hole is located within a radius of D2 centered at O, where D2 ≤ D1 / 2.

7. The knob-type apical valve ventricular pad as described in claim 6, characterized in that, The outer diameter of the substrate is D1 and the center is O. The through hole is located within a radius of D2 with O as the center, where D2≤D1 / 3.

8. The knob-type apical valve ventricular ... The knob-type apical valve pad also includes: A top cover is detachably fitted onto one side of the substrate, and a locking cavity is formed between the top cover and the substrate. The ends of the locking wheel and the locking pin are both located within the locking cavity.

9. The knob-type apical valve ventricular pad as described in claim 8, characterized in that, The substrate and the top cover are respectively provided with a plurality of sewing holes, and the substrate and the top cover are fixedly connected by sewing thread passing through the sewing holes; And / or, a felt sheet is provided on the other side of the substrate, and the felt sheet is fixedly connected to the substrate by a stitching thread passing through the stitching hole; And / or, a limiting block is provided on the side of the top cover facing the substrate, and a positioning post is provided on the side of the substrate facing the top cover, so that the positioning post and the limiting block cooperate with each other to achieve the positioning of the top cover and the substrate. And / or, the positioning post has a hollow cylindrical structure, and the through hole in the middle of the positioning post is one of the stitching holes.

10. The knob-type apical valve ventricular ... The wire hole extends through and penetrates the upper cover, and the upper cover is also provided with a through hole; The take-up mechanism also includes an operating lever, which is disposed on the side of the locking wheel. The operating lever extends to the outside of the upper cover through the perforation. When the locking wheel is rotated by the operating lever, the operating lever is wound around the core connector.

11. The knob-type apical valve ventricular pad as described in claim 10, characterized in that, The operating lever and the locking wheel are an integral structure; And / or, the diameter of the perforation is smaller than the outer diameter of the locking wheel; And / or, a step is provided between the operating lever and the locking wheel, the diameter of the step being the same as the diameter of the through hole, and when the operating lever extends out of the through hole, the upper end face of the step is flush with the upper cover.

12. The knob-type apical valve ventricular ... The operating lever is provided with a transverse hole for the apical connector to pass through, and the center line of the transverse hole is perpendicular to the first axis.

13. The knob-type apical valve ventricular pad as described in claim 12, characterized in that, The take-up mechanism also includes a turntable, which is disposed at the outer end of the operating lever, and the outer diameter of the turntable is larger than the outer diameter of the operating lever.

14. The knob-type apical valve ventricular ... The turntable is provided with a non-circular insertion hole, and the outer end of the operating rod is shaped to match the inner wall of the insertion hole. The turntable and the operating rod are connected by insertion. And / or, the turntable is provided with a pair of slots, the slots are connected to both sides of the turntable along the first axis direction, the slots are also connected to the outer peripheral surface of the turntable, so that the slots have openings exposed on the outer peripheral surface of the turntable, the connecting line between the openings of the pair of slots is parallel to the center line of the transverse hole, and the core connector can be passed through the transverse hole and the pair of slots several times to achieve fixation; And / or, the turntable is provided with a plurality of sewing holes, and a felt sheet is provided on the side of the turntable away from the operating lever, the felt sheet being fixedly connected to the turntable by sewing thread passing through the sewing holes.

15. The knob-type apical valve ventricular ... The locking mechanism further includes an elastic element for applying a force to the locking pin in the opposite direction to its movement. A guide groove is provided on one side of the substrate for the locking pin to move linearly relative to the locking wheel, and the locking pin is slidably connected to the guide groove along the axial direction. The elastic element is sleeved on the outer periphery of the locking pin and located in the guide groove. The inner end of the elastic element is restricted by the locking pin, and the outer end of the elastic element abuts against the outer end of the guide groove.

16. The knob-type apical valve ventricular ... The end of the locking pin that is furthest from the end protrudes from the base plate; And / or, an operating structure is provided at one end of the locking pin away from the end head; And / or, when both the locking pin and the elastic element are made of metal, the locking pin and the elastic element are made of the same material; And / or, the wear resistance of the material used for the end of the locking pin is greater than that of the material used for the locking tooth; And / or, the knob-type apical valve pad further includes an upper cover, which is detachably fitted onto one side of the base plate, forming a locking cavity between the upper cover and the base plate. The ends of the locking wheel and the locking pin are both located within the locking cavity. A pair of limiting blocks are provided on the side of the upper cover facing the base plate. When the upper cover is fitted onto the base plate, the pair of limiting blocks are respectively engaged with both sides of the guide groove.

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