Knob type valve heart apex gasket

Abstract

The invention belongs to the technical field of medical apparatus and instruments, and particularly relates to a knob type valve cardiac apex gasket which comprises a take-up mechanism, the take-up mechanism can rotate with a preset first axis as a pivotal axis and is used for winding a cardiac apex connecting piece during rotation so as to adjust the tension of the cardiac apex connecting piece, and the take-up mechanism comprises a locking wheel; and the locking mechanism comprises a locking pin, and the locking pin can lock the locking wheel. The take-up mechanism is matched with the locking mechanism, the cardiac apex connecting piece is collected and wound through the take-up mechanism, the pulling force of the cardiac apex connecting piece is controlled by rotating the take-up mechanism, and the take-up mechanism is locked through the locking mechanism to prevent the cardiac apex connecting piece from losing the pulling force.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a knob-type valve apex gasket. Background Art

[0002] Mitral / tricuspid regurgitation is a valvular heart disease in which the valve between the two heart chambers fails to close properly, causing blood to leak backward and flow through the valve. Mitral / tricuspid regurgitation can cause harm to the human body and even threaten life, and mitral / tricuspid valve replacement has become an effective treatment.

[0003] In some heart replacement valve prostheses, an apical rope is required. One end of the apical rope 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 through an apical gasket. The apical rope prevents the replacement valve from being pushed into the atrium by blood pressure when closed. At this time, the tension required by the apical rope is very important. The traditional apical rope adjustment method generally uses the apical rope to fix directly to the anchor outside the heart by knotting, etc., which has low operating accuracy and is difficult to fix. The pulling and fixing of the apical rope are separate, that is, the tension of the apical rope needs to be kept stable while the pull line is fixed, which can easily cause the tension of the apical rope to change, increasing the difficulty of the operation.

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

[0005] The present invention aims to provide a knob-type valve apex gasket to solve the technical problem that it is difficult to maintain a stable tension and fix the apex rope at the same time in the existing apex gasket.

[0006] In order to solve the above technical problems, one aspect of the present invention provides a knob-type valve apex gasket, comprising:

[0007] a wire-receiving mechanism, which is rotatable with a preset first axis as a pivot axis and is used to wind around the apex connector to adjust its tension during rotation, and the wire-receiving mechanism includes a locking wheel;

[0008] A locking mechanism includes a locking pin, and the locking pin can lock the locking wheel.

[0009] Optionally, in the aforementioned knob-type valve apex gasket, a plurality of locking teeth are evenly distributed along the circumference on the locking wheel, 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 in a direction 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 obliquely arranged on the circumferential surface of the locking wheel;

[0010] The end of the locking pin can be inserted between adjacent locking teeth, and the side surface 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, and the locking surface cooperates with the locking pin to prevent the locking wheel from rotating in the opposite direction.

[0011] Optionally, in the aforementioned knob-type valve apex gasket, the transition surface and the end of the locking pin are smooth surfaces that correspond to each other, and the transition surface is in surface contact with the end of the locking pin.

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

[0013] Optionally, in the aforementioned knob-type valve apex gasket, the transition surface comprises a tooth side portion connected to the locking wheel and a tooth top portion away from the locking wheel, and the transition surface is formed by obliquely extending from the tooth side portion to the tooth top portion, and the inclination direction of the transition surface of each locking tooth is the same;

[0014] The locking surface comprises a locking bottom connected to the locking wheel and a locking top away from the locking wheel, and the locking surface is formed by obliquely extending from the locking bottom to the locking top, and the locking surfaces of the locking teeth have the same inclination direction;

[0015] The locking tooth further comprises a connecting surface, which is formed by bending and extending from the tooth top to the locking top.

[0016] Optionally, in the aforementioned knob-type valve apex gasket, the knob-type valve apex gasket further comprises:

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

[0018] A wire passing hole, which passes through the middle of the base plate, and the passing direction of the wire passing hole is parallel to the axial direction of the locking wheel. The wire passing hole allows the apex connector to pass through the other side of the base plate and then connect with the wire taking-up mechanism.

[0019] Optionally, in the knob-type valve apex gasket as described above, the center line of the wire hole is parallel to the first axis and has a preset distance, so that the wire collection mechanism is eccentrically arranged on the substrate.

[0020] Optionally, in the knob-type valve apex gasket as described above, the substrate is a circular or quasi-circular structure, the outer contour diameter of the substrate is D1 and the center of the circle is O, and the wire hole is located within a range with O as the center and a radius of D2, wherein D2≤D1 / 2, preferably, D2≤D1 / 3.

[0021] Optionally, in the aforementioned knob-type valve apex gasket, the knob-type valve apex gasket further comprises:

[0022] An upper cover is detachably covered on one side surface of the base plate, a locking accommodating cavity is formed between the upper cover and the base plate, and the ends of the locking wheel and the locking pin are both located in the locking accommodating cavity.

[0023] Optionally, in the aforementioned knob-type valve apex gasket, a plurality of suture holes are respectively provided on the base plate and the upper cover, and the base plate and the upper cover are fixedly connected by sutures passing through the suture holes.

[0024] Optionally, in the aforementioned knob-type valve apex gasket, a felt sheet is disposed outside the other side surface of the base plate, and the felt sheet is preferably fixedly connected to the base plate by sutures passing through the suture holes.

[0025] Optionally, in the knob-type valve apex gasket as described above, a limiting block is provided on the side of the upper cover facing the substrate, and a positioning column is provided on the side of the substrate facing the upper cover, and the positioning column and the substrate are positioned by cooperation between the positioning column and the limiting block.

[0026] Optionally, in the aforementioned knob-type valve apex gasket, the positioning post is 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 aforementioned knob-type valve apex gasket, the wire hole extends and penetrates the upper cover, and the upper cover is further provided with a perforation;

[0028] The wire-reeling mechanism further comprises an operating rod, which is arranged on a side of the locking wheel and extends to the outside of the upper cover through the through hole. When the locking wheel is rotated by the operating rod, the operating rod is wound around the apex connector.

[0029] Optionally, in the knob-type valve apex gasket as described above, the operating rod and the locking wheel are an integrated structure.

[0030] Optionally, in the knob-type valve apex gasket as described above, the diameter of the perforation is smaller than the outer diameter of the locking wheel.

[0031] Optionally, in the knob-type valve apex gasket as described above, a step is provided between the operating rod and the locking wheel, the diameter of the step is the same as the diameter of the perforation, and when the operating rod extends out of the perforation, the upper end surface of the step is flush with the upper cover.

[0032] Optionally, in the aforementioned knob-type valve apex gasket, a transverse hole for the apex connector to pass through is provided on the operating rod, and a centerline of the transverse hole is perpendicular to the first axis.

[0033] Optionally, in the aforementioned knob-type valve apex gasket, the wire-retracting mechanism further comprises a turntable, the turntable is disposed at the outer end of the operating rod, and the outer diameter of the turntable is greater than the outer diameter of the operating rod.

[0034] Optionally, in the aforementioned knob-type valve apex gasket, a non-circular insertion hole is provided on the turntable, the outer end shape of the operating rod is consistent with the inner wall of the insertion hole, and the turntable is plug-connected to the operating rod.

[0035] Optionally, in the aforementioned knob-type valve apex gasket, a pair of slots are provided on the turntable, the slots are connected to both sides of the turntable along the first axis direction, and the slots are also connected to the outer peripheral surface of the turntable, so that the slots have notches exposed to the outer peripheral surface of the turntable, and the connection line between the notches of the pair of slots is parallel to the center line of the transverse hole;

[0036] The apex connector can be passed through and fixed between the transverse hole and a pair of slots for several times.

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

[0038] Optionally, in the aforementioned knob-type valve apex gasket, the locking mechanism further comprises an elastic element, and the elastic element is used to apply a force opposite to the movement direction of the locking pin to the locking pin.

[0039] Optionally, in the aforementioned knob-type valve apex gasket, a guide groove is provided on one side surface of the substrate for the locking pin to perform linear motion 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 is 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 valve apex gasket as described above, an end of the locking pin away from the tip extends out of the base plate.

[0042] Optionally, in the aforementioned knob-type valve apex gasket, an operating structure is provided on the end of the locking pin away from the end.

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

[0044] Optionally, in the aforementioned knob-type valve apex gasket, the wear resistance of the material used for the end of the locking pin is greater than the wear resistance of the material used for the locking tooth.

[0045] Optionally, in the aforementioned knob-type valve apex gasket, a pair of limit blocks are provided on the side of the upper cover facing the base plate, and when the upper cover is closed on the base plate, the pair of limit blocks are respectively engaged with two sides of the guide groove.

[0046] The positive and progressive effects of the present invention are:

[0047] 1. The present invention adopts a take-up mechanism and a locking mechanism to gather and wind the apex connector through the take-up mechanism, control the tension of the apex connector by rotating the take-up mechanism, and prevent the apex connector from losing tension by locking the take-up mechanism through the locking mechanism.

[0048] 2. The structural coordination design of the locking teeth and the locking pin can not only prevent the locking wheel from rotating in the opposite direction, but also ensure that when the locking pin abuts against the locking surface, the extrusion force generated is perpendicular to the axial movement direction of the locking pin, and no component force is generated to push the locking pin away from the locking wheel, so it can withstand a greater apex connector tension. Moreover, with this design, when the locking wheel rotates and the locking surface is parallel to the axial movement direction of the locking pin, the locking pin at this time is quickly inserted between two adjacent locking teeth under the action of the elastic element, and the response is rapid.

[0049] 3. The transition surface and the end of the locking pin are smooth surfaces that match each other. The two are in surface contact, with a large contact area and high stability. Under the action of the elastic element, the locking pin is stably pressed against the transition surface, especially the apex gasket that accompanies the beating of the heart, and the stability brought by the surface contact is particularly prominent. The smooth surface is preferably a plane, and the locking pin and the locking tooth have no concave, so that both have high strength.

[0050] 4. The wire taking-up mechanism and the corresponding locking mechanism are eccentrically arranged on the base plate, and the wire hole for the apex connector to pass through is arranged within a certain range in the middle of the base plate, so that the wire hole on the base plate and the wire taking-up mechanism are non-coaxial structures, so that the base plate can be relatively evenly stressed around the base plate under the pulling force of the apex connector, thereby preventing one side of the base plate from warping up.

[0051] If the position of the wire hole is not in the middle, the apex connector needs to be adjusted in the path so that the apex connector first passes through the middle of the substrate and then enters the wire hole. However, each bending adjustment of the apex connector will cause friction between the apex connector and the component that adjusts its position, greatly increasing the risk of wear of the apex connector and reducing the safety of the apex connector. The present invention achieves that the wire hole is directly located in the middle of the substrate through the eccentric setting of the take-up mechanism and the locking mechanism, which simply and effectively solves the above problem.

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

[0053] 5. The locking accommodating cavity formed between the upper cover and the base plate can protect the end of the locking wheel and the locking pin. The locking wheel is restricted in the locking accommodating cavity, which also increases the stability of the system.

[0054] The rotation of the locking wheel is realized by the operating rod, and when the operating rod rotates, the apex connector can be wound around the operating rod. In particular, the operating rod and the locking wheel are an integrated structure, and the system stability is better.

[0055] The step arrangement between the locking wheel and the operating rod effectively prevents the apex connector from mistakenly entering the interior of the upper cover or the gap between the perforation and the operating rod, thereby obstructing the function of the apex gasket.

[0056] 6. The design of the turntable reduces the torque when rotating the operating rod, making it easier to rotate. At the same time, the large-diameter turntable and the upper cover restrict the apex connector to the operating rod between the two to prevent the apex connector from detaching from the operating rod.

[0057] A non-circular hole is provided on the rotating disk, and the outer end portion of the operating rod is arranged in a corresponding shape to be inserted into the non-circular hole of the rotating disk, thereby preventing the rotating disk from rotating relative to the operating rod.

[0058] The position of the card slot of the turntable corresponds to the position of the transverse hole. The apex connector passes through the transverse hole, and the apex connector then enters a pair of card slots in turn, so that the turntable cannot be separated from the operating rod. The transverse hole of the present invention can pass through the apex connector multiple times, and the apex connector can also first pass through the wire hole and then enter the transverse hole, and then after passing through the card slot, the apex connector returns to the position of entering the transverse hole again, where it is knotted and fixed with the apex connector entering the transverse hole. The apex connector further fixes the turntable, and the apex connector cannot rotate relative to the operating rod, and the tension of the apex connector will make the turntable more securely connected to the operating rod.

[0059] 7. The elastic element of the locking mechanism is designed so 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, the locking pin is quickly inserted between the adjacent locking teeth again under the action of the elastic element to prevent the locking wheel from reversing, that is, only the forward rotation of the locking teeth is allowed.

[0060] The locking pin is designed to extend out of the base plate, and the operator can intervene in the locking of the locking pin on the locking wheel through the extended locking pin portion, thereby realizing reverse adjustment of the locking wheel. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0063] Figure 2 for Figure 1 Exploded diagram of

[0064] Figure 3 for Figure 1 Further exploded diagram of;

[0065] Figure 4 for Figure 1 Partial stereogram of the take-up mechanism;

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

[0067] Figure 6 for Figure 5 A partial enlarged view of

[0068] Figure 7 for Figure 1 A cross-sectional view of

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

[0070] Fig. 9 for Figure 1 A stereogram of the middle turntable;

[0071] Fig.10 A path diagram of the apical connector of the present invention;

[0072] Fig.11 Another front view of the present invention;

[0073] Fig.12 The figure is a schematic diagram of an application of the present invention. DETAILED DESCRIPTION

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

[0075] It should be noted that the following embodiments and features therein may be combined with each other if there is no conflict.

[0076] In the description of the present invention, it should be noted that directional words such as the terms "outside", "middle", "inside", "outside", etc., which indicate directions and positional relationships, are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "several" and "a number" mean two or more, unless otherwise clearly and specifically defined.

[0078] Reference Figures 1 to 11 An embodiment of the present invention provides a knob-type valve apex gasket, including a winding mechanism 100 and a locking mechanism 200.

[0079] The wire-taking mechanism 100 is rotatable with a preset first axis as a pivot axis and is used to wind around the apex connector 800 to adjust its tension during rotation. The wire-taking mechanism 100 includes a locking wheel 110 .

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

[0081] When the present invention is used, the wire take-up mechanism 100 cooperates with the locking mechanism 200, and the apex connector 800 is gathered and wound by the wire take-up mechanism 100. The tension of the apex connector 800 is controlled by rotating the wire take-up mechanism 100, and the apex connector 800 is gradually tightened during the winding process, thereby achieving the function of adjusting the tension. When the wire take-up mechanism 100 is rotated to any angle, the locking mechanism 200 can lock the wire take-up mechanism 100 to prevent the apex connector 800 from losing tension.

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

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

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

[0085] like Figure 4 As shown in , 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, so 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 stuck between adjacent locking teeth 120, and the side surface 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 between adjacent locking teeth 120. When the locking pin 210 moves to the first preset position in the direction of the locking wheel 110, the locking pin 210 is engaged with one of the adjacent locking teeth 120 to achieve locking. When the locking pin 210 moves to the second preset position in the direction of the locking wheel 110, it is disengaged from the adjacent locking tooth 120. By engaging the locking pin 210 with the adjacent locking teeth 120, when the locking wheel 110 is rotated, the apex connector 800 is rotated to a rotation angle that meets the tension, and the locking pin 210 can be locked with the adjacent locking teeth 120 at that location by simply controlling the position of the locking pin 210.

[0088] The present invention can realize that the locking pin 210 prevents the locking wheel 110 from rotating in the reverse direction through the above-mentioned structural coordination design of the locking tooth 120 and the locking pin 210, and when the locking pin 210 abuts against the locking surface 122, the extrusion force generated is perpendicular to the axial movement direction of the locking pin 210, and no component force is generated to push the locking pin 210 away from the locking wheel 110, so it can withstand a larger pulling force of the apex connector 800. Moreover, with such a design, when the locking wheel 110 rotates, when the locking surface 122 is parallel to the axial movement direction of the locking pin, the locking pin 210 at this time is quickly inserted between two adjacent locking teeth 120 under the action of the elastic element 220, and the response is rapid.

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

[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. The 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 the apical gasket that accompanies the beating of the heart, and the stability brought by the surface contact is particularly prominent.

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

[0092] In some embodiments, reference Figure 6 The transition surface 121 and the end 210a of the locking pin 210 are both planes. The plane design makes the end 210a of the locking pin 210 and the transition surface 121 have no inner concave or outer convex, so that both have high strength.

[0093] In some embodiments, reference Figure 4, when the transition surface 121 and the end 210a of the locking pin 210 are both planes:

[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, and the inclination 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 is obliquely extended from the locking bottom 1221 to the locking top 1222, and the inclination direction of the locking surfaces 122 of each locking tooth 120 is the same.

[0096] The locking tooth 120 further includes a connecting surface 123 , which is formed by bending and extending from the tooth top 1212 to the locking top 1222 .

[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 in a direction away from the locking wheel 110. During the movement, the end 210a of the locking pin 210 moves along the transition surface 121 and the connecting surface 123 in sequence. After passing over the locking tooth 120, the end 210a of the locking pin 210 moves in the direction of the locking wheel 110. The end 210a of the locking pin 210 is stuck between another locking tooth adjacent to the locking tooth 120. When the locking wheel 110 stops rotating, the side surface of the locking pin 210 contacts and abuts against the locking surface 122 of the locking tooth 120, and the locking pin 210 locks 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 an outwardly convex arc surface and the end 210a of the locking pin 210 is an inwardly concave arc surface, the transition surface 121 is bent and obliquely extended from the tooth side portion 1211 to the tooth top portion 1212 to form the transition surface 121, the locking tooth 120 does not include a connecting surface 123, and the locking top portion 1222 of the locking surface 122 coincides with the tooth top portion 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 flat.

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

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

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

[0102] The other side of the base plate 300 contacts the heart, and the apex connector 800 passes through the base plate 300 from the other side through the wire hole 400 and is connected to the wire collection mechanism 100 .

[0103] In some embodiments, reference Fig.10 The center line C of the wire hole 400 is parallel to the first axis D and has a preset distance, that is, the two do not overlap, that is, the wire hole 400 and the locking wheel 110 are not coaxially arranged, so that Figure 5 and Figure 7 As shown, the wire take-up mechanism 100 is eccentrically disposed on the base plate 300 .

[0104] The wire-reeling mechanism 100 and the corresponding locking mechanism 200 are eccentrically arranged on the base plate 300, and the wire-passing hole 400 for the apex connector 800 to pass through is in the middle of the base plate 300, so that the wire-passing hole 400 on the base plate and the wire-reeling mechanism 100 are non-coaxial structures, so that the base plate 300 can be relatively evenly stressed at its periphery under the pulling force of the apex connector 800, thereby preventing one side of the base plate 300 from tilting. If the wire-passing hole 400 is not located in the middle, the apex connector 800 needs to be adjusted in the path so that the apex connector 800 first passes through the middle of the base plate 300 and then enters the wire-passing hole 400. However, each bending adjustment of the apex connector 800 will cause the apex connector 800 to rub against the component whose position is adjusted, greatly increasing the risk of wear of the apex connector 800 and reducing the safety of the apex connector 800. The present invention achieves that the wire hole 400 is directly located in the middle of the base plate 300 by eccentrically arranging the wire take-up mechanism 100 and the locking mechanism 200, thereby solving the above-mentioned problem simply and effectively.

[0105] In some embodiments, reference Figure 8 The substrate 300 is a circular or quasi-circular structure, the outer contour diameter of the substrate 300 is D1 and the center is O, and the wire hole 400 is located within the range of O as the center and the radius D2, wherein D2≤D1 / 2, preferably, D2≤D1 / 3.

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

[0107] In some embodiments, reference Figures 1 to 3 The knob-type valve apical gasket further includes an upper cover 500, which is detachably covered on one side of the base plate 300. A locking accommodating cavity is formed between the upper cover 500 and the base plate 300, and the ends of the locking wheel 110 and the locking pin 210 are both located in the locking accommodating cavity. The locking accommodating cavity formed between the upper cover 500 and the base plate 300 can protect the ends of the locking wheel 110 and the locking pin 210, and the locking wheel 110 is restricted in the locking accommodating cavity, which also increases the stability of the system.

[0108] In some embodiments, reference Figures 1 to 3 , Figure 5 , Figures 7 to 9 A plurality of suture holes 310 are provided on the base plate 300 , and a plurality of suture holes 510 are provided on the upper cover 500 . The base plate 300 and the upper cover 500 are fixedly connected by suture lines passing through the suture holes 310 and the suture holes 510 .

[0109] The positions of the suture holes 310 and 510 should not affect the normal movement of the other components. In addition, the use of the suture thread of the present invention makes it possible for the apex gasket to be connected and fixed without using detachable hard materials such as screws, which effectively increases the safety of the apex gasket, especially for a beating heart, where any detachable components may fall off under the influence of the beating of the heart.

[0110] In some embodiments, reference Fig.11 A felt sheet 330 is disposed on the other side of the substrate 300, and the felt sheet 330 is preferably fixedly connected to the substrate 300 by passing a suture through the suture hole 310. Fig.12 As shown, the other side of the substrate 300 needs to abut against the heart, so the softness of the felt sheet 330 can make the apex gasket better contact with the heart and reduce the impact of the heart beating on the apex gasket.

[0111] In some embodiments, reference 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 column 340 is provided on the side of the substrate 300 facing the upper cover 500. The positioning of the upper cover 500 and the substrate 300 is achieved by the cooperation between the positioning column 340 and the limiting block 520.

[0112] In some embodiments, reference Figure 7 The positioning post 340 is a hollow cylindrical structure, and the through hole in the middle of the positioning post 340 is one of the suture holes 310. The positioning post 340 is combined with the suture hole 310 to not only position, but also form a passage for the suture line.

[0113] In some embodiments, reference Figures 1 to 3 , Fig.10 The wire hole 400 extends and penetrates the upper cover 500 , and the apex connector 800 can pass through the wire hole 400 from the other side of the substrate 300 , and then pass through the substrate 300 and the upper cover 500 in sequence, and then be connected to the wire take-up mechanism 100 .

[0114] Reference Figures 1 to 3 The upper cover 500 is also provided with a perforation 530 .

[0115] Reference Figures 1 to 4 The wire-winding mechanism 100 further includes an operating rod 130, which is disposed on the side of the locking wheel 110. The operating rod 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 rod 130, the operating rod 130 is wound around the apex connector 800 through the wire hole 400 from the other side of the substrate 300, through the substrate 300 and the upper cover 500 in sequence.

[0116] In some embodiments, the operating rod 130 and the locking wheel 110 are integrated into one structure to improve stability.

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

[0118] In some embodiments, reference Figure 4 A step 140 is provided between the operating rod 130 and the locking wheel 110, and the diameter of the step 140 is the same as the diameter of the through hole 530. Fig.10 As shown in FIG, when the operating rod 130 extends out of the through hole 530, the upper end surface of the step 140 is flush with the upper cover 500. The step 140 between the locking wheel 110 and the operating rod 130 effectively prevents the apex connector 800 from mistakenly entering the interior of the upper cover 500 or the gap between the through hole 530 and the operating rod 130, thereby obstructing the function of the apex gasket.

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

[0120] In some embodiments, reference Figures 1 to 3 The wire take-up mechanism 100 further includes a turntable 150, which is disposed at the outer end of the operating rod 130, and the outer diameter of the turntable 150 is larger than the outer diameter of the operating rod 130. The design of the turntable 150 reduces the torque when the operating rod 130 is rotated, making it easy to rotate. At the same time, the turntable 150 with a large diameter and the upper cover 500 restrict the apex connector 800 to the operating rod 130 between the two, preventing the apex connector 800 from being separated from the operating rod.

[0121] In some embodiments, reference Fig. 9 The turntable 150 is provided with a non-circular insertion hole 151, and the outer end of the operating rod 130 is in the same shape as the inner wall of the insertion hole 151, and the turntable 150 is plugged and connected with the operating rod 130. The turntable 150 is provided with a non-circular hole, and the outer end of the operating rod 130 is configured to have a corresponding shape and is inserted into the non-circular hole of the turntable 150, thereby preventing the turntable 150 from rotating relative to the operating rod 130.

[0122] In some embodiments, the plug hole 151 is a non-circular hole, and the cross-sectional shape of the plug hole 151 is a triangle, a quadrilateral, a pentagon, a hexagon, or an anisotropic hole.

[0123] In some embodiments, reference Fig. 9 A pair of slots 152 are provided on the turntable 150. The slots 152 are connected to both sides of the turntable 150 along the first axis direction. The slots 152 are also connected to the outer peripheral surface of the turntable 150, so that the slots 152 have notches 153 exposed to the outer peripheral surface of the turntable 150. The connection line between the notches 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 notch 153. The apex connector 800 can be passed 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 transverse hole 131. The apex connector 800 passes through the transverse hole 131, and the apex connector 800 then enters the pair of slots 152 in sequence, so that the turntable 150 cannot be separated from the operating rod 130. The transverse hole 131 of the present invention can pass through the apex connector 800 multiple times. Fig.10 As shown in , the apex connector 800 may also first pass through the wire hole 400 and then pass through the transverse hole 131, and then pass through a pair of slots 152 in sequence, and then the apex connector 800 returns to the position of entering the transverse hole 131 again, where it is knotted and fixed with the apex connector 800 entering the transverse hole 131. The apex connector 800 further fixes the turntable 150, and the apex connector 800 cannot rotate relative to the operating rod 130, and the tension of the apex connector 800 will make the turntable 150 more firmly connected to the operating rod 130.

[0125] In some embodiments, reference Fig. 9 , a plurality of suture holes 154 are provided on the rotating disk 150. Fig.11 A felt sheet 155 is provided on the side of the turntable 150 away from the operating rod 130, and the felt sheet 155 is preferably fixedly connected to the turntable 150 by sutures passing through the suture holes 154. Fig.12 As shown, after the apex gasket is installed, the side of the turntable 150 away from the operating rod 130 does not abut the heart, but the apex gasket is close to the inner side of the chest cavity after installation. With the beating of the heart, the apex gasket has the risk of hitting the chest cavity, and the softness of the felt sheet 155 can effectively prevent the risk of the apex gasket hitting the chest cavity. In addition, the use of sutures makes it possible for the apex gasket to be connected and fixed without using detachable hard materials such as screws, which effectively increases the safety of the apex gasket, especially for a beating heart, any detachable parts may fall off under the influence of the beating of the heart.

[0126] In some embodiments, in order to maintain a better locking effect, the locking pin 210 of the locking mechanism 200 is configured to perform a linear motion in a direction perpendicular to the first axis.

[0127] In some embodiments, reference Figures 1 to 3 , Figures 5 to 7 The locking mechanism 200 further includes an elastic element 220, which is used to apply a force opposite to the direction of movement of the locking pin 210. The design of the elastic element 220 allows the locking pin 210 to move away from the locking wheel 110 and compress the elastic element 220 when the locking wheel 110 rotates forwardly under the action of the locking teeth 120. After the locking pin 210 crosses the locking teeth 120, under the action of the elastic element 220, the locking pin 210 is quickly inserted between the adjacent locking teeth 120 again to prevent the locking wheel 110 from reversing, that is, only the forward rotation of the locking teeth 120 is allowed.

[0128] In some embodiments, reference Figures 1 to 3 , Figures 5 to 7 A guide groove 350 is provided on one side of the base plate 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. The elastic element 220 is sleeved on the outer periphery of the locking pin 210 and is 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, a section of the locking pin 210 close to the end has a larger outer diameter than the remaining sections, so that a limiting groove is formed on the locking pin 210 to limit the inner end of the elastic element 220 .

[0130] In some embodiments, reference Figure 7The end of the locking pin 210 away from the end 210a extends out of the base plate 300. The locking pin 210 extends out of the base plate 300, and the operator can intervene in the locking of the locking wheel 110 by the locking pin 210 through the extended portion of the locking pin 210, so that the locking wheel 110 can be adjusted in the reverse direction.

[0131] In some embodiments, an operating structure is provided on the end of the locking pin 210 away from the end head 210a. The operator can intervene in the locking of the locking wheel 110 by the locking pin 210 through the operating structure.

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

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

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

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

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

[0137] In some embodiments, reference Fig.12 One end of the apex connector 800 is connected to the replacement valve 900, and the other end of the apex connector 800 extends to the outside of the heart and is connected and fixed to the knob-type valve apex gasket 10 of the present invention. Fig.10 The apex connector 800 passes through the base plate 300 and the upper cover 500 in sequence through the wire hole 400, passes through the horizontal hole 131 on the operating rod 130, bypasses a pair of slots 152, and is knotted and fixed with the apex connector 800 entering the horizontal hole 131.

[0138] The forward rotating turntable 150 drives the operating rod 130 and the locking wheel 110 to rotate forward, and the apex connector 800 is gradually wrapped around the outer wall of the operating rod 130. At the same time, the end 210a of the locking pin 210 sequentially crosses each locking tooth 120. Under the action of the locking pin 210, the turntable 150, the operating rod 130 and the locking wheel 110 cannot rotate reversely.

[0139] When the apex connector 800 rotates forward until it has the target tension, the rotation is stopped, and the locking pin 210 locks the locking wheel 110, so that the locking wheel does not rotate reversely, thereby maintaining the apex connector 800 always having a stable target tension and better fixing the apex connector 800.

[0140] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, some details in the embodiments should not be construed as limiting the present invention, and the present invention shall be protected by the scope defined by the attached claims.

Claims

1. A knob-type valve apex gasket, characterized in that: include: a wire-receiving mechanism, which is rotatable with a preset first axis as a pivot axis and is used to wind around the apex connector to adjust its tension during rotation, and the wire-receiving mechanism includes a locking wheel; A locking mechanism, comprising a locking pin, which can lock the locking wheel;.

2. The knob-type valve apex gasket according to claim 1, characterized in that: A plurality of locking teeth are evenly distributed on the locking wheel along the circumferential direction, and the locking teeth include a transition surface and a locking surface. When the locking wheel rotates forward, the transition surface of the locking teeth drives the end of the locking pin to move in a direction 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 obliquely arranged on the circumferential surface of the locking wheel. The end of the locking pin can be inserted between adjacent locking teeth, and the side surface 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, and the locking surface cooperates with the locking pin to prevent the locking wheel from rotating in the opposite direction.

3. The knob-type valve apex gasket according to claim 2, characterized in that: 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 in contact; The transition surface and the end of the locking pin are preferably both planes.

4. The knob-type valve apex spacer according to claim 3, characterized in that: The transition surface comprises a tooth side portion connected to the locking wheel and a tooth top portion away from the locking wheel, and the transition surface is formed by obliquely extending from the tooth side portion to the tooth top portion, and the inclination direction of the transition surface of each locking tooth is the same; The locking surface comprises a locking bottom connected to the locking wheel and a locking top away from the locking wheel, and the locking surface is formed by obliquely extending from the locking bottom to the locking top, and the locking surfaces of the locking teeth have the same inclination direction; The locking tooth further comprises a connecting surface, which is formed by bending and extending from the tooth top to the locking top.

5. The knob-type valve apex spacer according to any one of claims 1 to 4, characterized in that: The knob-type valve apex spacer also includes: a base plate, one side of which is rotatably connected to the locking wheel; A wire passing hole, which passes through the middle of the base plate, and the passing direction of the wire passing hole is parallel to the axial direction of the locking wheel. The wire passing hole allows the apex connector to pass through the other side of the base plate and then connect with the wire taking-up mechanism.

6. The knob-type valve apex spacer according to claim 5, characterized in that: The center line of the wire-passing hole is parallel to the first axis and has a preset distance therebetween, so that the wire-taking mechanism is eccentrically arranged on the substrate; And / or, the substrate is a circular or quasi-circular structure, the outer contour diameter of the substrate is D1 and the center is O, and the wire hole is located within a range with O as the center and a radius of D2, wherein D2≤D1 / 2, preferably D2≤D1 / 3.

7. The knob-type valve apex spacer according to claim 5, characterized in that: The knob-type valve apex spacer also includes: An upper cover is detachably covered on one side surface of the base plate, a locking accommodating cavity is formed between the upper cover and the base plate, and the ends of the locking wheel and the locking pin are both located in the locking accommodating cavity.

8. The knob-type valve apex spacer according to claim 7, characterized in that: The base plate and the upper cover are respectively provided with a plurality of suturing holes, and the base plate and the upper cover are fixedly connected by suturing threads passing through the suturing holes; And / or, a felt sheet is disposed outside the other side surface of the substrate, and the felt sheet is preferably fixedly connected to the substrate by sutures passing through the suture holes; And / or, a limiting block is provided on the side of the upper cover facing the substrate, and a positioning column is provided on the side of the substrate facing the upper cover, and the positioning column and the limiting block cooperate with each other to achieve positioning of the upper cover and the substrate; And / or, the positioning column adopts a hollow cylindrical structure, and the through hole in the middle of the positioning column is one of the suture holes.

9. The knob-type valve apex spacer according to claim 7, characterized in that: The wire hole extends and passes through the upper cover, and the upper cover is also provided with a perforation; The wire-reeling mechanism further comprises an operating rod, which is arranged on a side of the locking wheel and extends to the outside of the upper cover through the through hole. When the locking wheel is rotated by the operating rod, the operating rod is wound around the apex connector.

10. The knob-type valve apex spacer according to claim 9, characterized in that: The operating rod and the locking wheel are an integrated 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 rod and the locking wheel, the diameter of the step is the same as the diameter of the through hole, and when the operating rod extends out of the through hole, the upper end surface of the step is flush with the upper cover.

11. The knob-type valve apex spacer according to claim 9, characterized in that: The operating rod is provided with a transverse hole for the apex connector to pass through, and the center line of the transverse hole is perpendicular to the first axis.

12. The knob-type valve apex spacer according to claim 11, characterized in that: The wire-taking mechanism further comprises a rotating disk, which is arranged at the outer end of the operating rod, and the outer diameter of the rotating disk is greater than the outer diameter of the operating rod.

13. The knob-type valve apex spacer according to claim 12, characterized in that: The rotating disk is provided with a non-circular plug hole, the outer end shape of the operating rod is consistent with the inner wall of the plug hole, and the rotating disk is plug-connected with the operating rod; And / or, a pair of slots are provided on the turntable, the slots are connected to both sides of the turntable along the first axis direction, and the slots are also connected to the outer peripheral surface of the turntable, so that the slots have notches exposed to the outer peripheral surface of the turntable, and the connection line between the notches of the pair of slots is parallel to the center line of the transverse hole, and the apex connector can be passed through between the transverse hole and the pair of slots several times to achieve fixation; And / or, a plurality of suture holes are arranged on the turntable, and a felt sheet is arranged on the side of the turntable away from the operating rod, and the felt sheet is preferably fixedly connected to the turntable by sutures passing through the suture holes.

14. The knob-type valve apex spacer according to claim 5, characterized in that: The locking mechanism further comprises an elastic element, and the elastic element is used to apply a force opposite to the movement direction of the locking pin to the locking pin; A guide groove is provided on one side surface of the base plate for the locking pin to perform linear motion 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 is 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.

15. The knob-type valve apex spacer according to claim 14, characterized in that: An end of the locking pin away from the end head extends out of the base plate; And / or, an operating structure is provided on the end of the locking pin away from the end head; and / or, when the locking pin and the elastic element are both 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 the wear resistance of the material used for the locking tooth; And / or, the knob-type valve apex gasket also includes an upper cover, which is detachably covered on one side surface of the base plate, and a locking accommodating cavity is formed between the upper cover and the base plate, and the ends of the locking wheel and the locking pin are both located in the locking accommodating cavity, and a pair of limit blocks are provided on the side of the upper cover facing the base plate, and when the upper cover is covered on the base plate, the pair of limit blocks are respectively clamped on both sides of the guide groove.

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