Artificial heart valve holder, artificial heart valve holding system and closure method

Abstract

This application provides an artificial heart valve holder, an artificial heart valve holding system, and a retraction method, belonging to the field of medical device technology. The artificial heart valve holder includes a central column, a valve holder, and a locking component. The central column has a distal and a proximal end distributed axially opposite each other, and a central hole penetrating the proximal and distal ends. The valve holder is mounted on the central column. Along the axial direction of the central column, the valve holder and the central column are movable relative to each other. The valve holder has a support arm protruding radially along the central column, and the support arm has a threading hole. The locking component is detachably assembled between the proximal end of the central column and the valve holder, and abuts against both the proximal end of the central column and the valve holder. When the locking component is detached, the central column can move axially towards the distal end relative to the valve holder. This artificial heart valve holder has a simple structure and can achieve the valve angle retraction function without penetrating the valve angle of the sewn artificial heart valve, reducing the possibility of cuts or damage to the valve leaflets.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to an artificial heart valve holder, an artificial heart valve holding system, and a retraction method. Background Technology

[0002] Currently, traditional mitral valve holders consist of a slender handle, a valve holder assembly, and a suture retraction suture. The valve holder design allows the suture retraction suture to be tightened. Because the suture is pre-stitched at the valve angle, the valve angle contracts towards the axis as the suture is tightened, thus closing the valve angle. This prevents the valve angle from scratching the myocardium or conduction tissues during the delivery of the artificial heart valve, which could lead to surgical abnormalities or failure. During the later stages of surgery, after the artificial heart valve is sutured to the heart tissue and the valve holder is withdrawn from the heart, as the surgeon cuts the pre-set suture, the suture, which penetrates and is sewn to the tip of the valve angle, will pass through the free edge of the valve leaflet from the valve's axis when it is withdrawn. Because the suture is taut, even after it is cut, part of the suture end is still wrapped around the valve frame of the artificial heart valve. Therefore, when pulled, the suture may be straightened. At this time, the straightened suture is prone to abrasion of the free edge of the valve leaflet, and may even cause scratches or cuts to the free edge of the valve leaflet, damaging the normal function of the valve. Summary of the Invention

[0003] This application provides an artificial heart valve holder, an artificial heart valve holding system, and a closing method. The structure is simple and can achieve the function of closing the valve corner without penetrating the sewn valve corner position, which can reduce the possibility of cutting and damaging the valve leaflet.

[0004] In a first aspect, embodiments of this application provide an artificial heart valve holder, which includes a central column, a valve holder, and a locking member. The central column has a distal end and a proximal end that are axially opposite to each other, and a central hole penetrating the proximal and distal ends. The valve holder is mounted on the central column. Along the axial direction of the central column, the valve holder and the central column are movable relative to each other. The valve holder has a support arm that protrudes radially along the central column, and the support arm has a threading hole. The locking member is detachably assembled between the proximal end of the central column and the valve holder and abuts against the proximal end of the central column and the valve holder, respectively. When the locking member is detached, the central column can move axially toward the distal end relative to the valve holder.

[0005] In this design, when assembling the valve holder with the artificial heart valve, the artificial heart valve is placed on the valve holder via a suture hole on the support arm. First, a fixing suture is threaded back and forth through the suture hole on the support arm to secure the artificial heart valve to the support arm, thus fixing it in place. Then, a gather-up suture segment is arranged on the outer side of each valve angle of the artificial heart valve. One end of the gather-up suture passes through the suture hole on the support arm and is fixed thereto. It passes through a central hole on the central post. The gather-up suture does not need to be sutured to the valve angle of the artificial heart valve. The other end of the gather-up suture goes directly around the outer side of the valve angle and enters the central hole from the distal end of the central post, connecting to the proximal side of the central post. When the central post moves axially towards the distal end relative to the valve holder, the gather-up suture tightens, achieving restraint and positioning of the valve angle. When using the valve holder to close the valve angle, the closing suture makes compression contact with the outer surface of the valve angle, without contacting the valve leaflet. This minimizes the risk of scratching or damaging the artificial heart valve leaflet. When the valve holder is withdrawn and the medical staff cuts the closing suture, the central column is at its highest point within the artificial heart valve holding system. During withdrawal, the closing suture is less likely to come into contact with the free edge of the valve leaflet, reducing the possibility of cuts or damage.

[0006] In some embodiments, either the central column or the petal holder is provided with an axial guide portion, and the other is provided with a guide groove that mates with the guide portion.

[0007] By providing guide parts and guide grooves on the central column and the petal holder respectively, the cooperation between the guide parts and guide grooves reduces the risk of relative rotation of the petal holder relative to the central column, making the petal holder more stable during the sliding process on the central column.

[0008] In some embodiments, the petal holder has an upper positioning portion and a lower positioning portion, and the central column is provided with an elastic positioning arm; the petal holder has a first position and a second position in the axial direction of the central column, the first position being closer to the distal end of the central column than the second position; wherein, when the petal holder is in the first position, the elastic positioning arm engages with the lower positioning portion, and the locking member is installed between the proximal end of the central column and the petal holder; when the petal holder moves proximal to the second position relative to the central column, the elastic positioning arm engages with the upper positioning portion.

[0009] Because the petal holder can move between a first position and a second position on the central column, the upper and lower positioning parts of the petal holder, along with the elastic positioning arm on the central column, ensure that when the petal holder is in the first position, the elastic positioning arm engages with the lower positioning part. A locking element is installed between the proximal end of the central column and the petal holder, thus restricting the petal holder from moving towards the proximal end of the central column to the second position, keeping the petal holder fixed at the first position on the central column. When it is necessary to close the petal angle, the locking element is removed, disengaging the elastic positioning arm from the lower positioning part. The petal holder can then move towards the proximal end of the central column to the second position, where the elastic positioning arm engages with the upper positioning part, keeping the petal holder fixed at the second position on the central column and maintaining the petal angle in a closed state, resulting in higher stability in petal angle closure.

[0010] In some embodiments, the central column has a clearance hole communicating with the central hole at the elastic positioning arm; the elastic positioning arm includes a body and an elastic claw, one end of the body is connected to the central column, and the other end of the body is connected to the elastic claw, the elastic claw protrudes from the outer surface of the central column, and the elastic claw is used to move toward the clearance hole when subjected to external extrusion force so as to disengage from the upper positioning part or the lower positioning part.

[0011] By providing clearance holes on the central column, when it is necessary to unlock the elastic positioning arm from the upper or lower positioning part, only a squeezing force needs to be applied to the elastic claw, causing it to be squeezed into the clearance hole. This unlocks the elastic claw from the upper or lower positioning part, allowing the valve holder to switch between a first and a second position on the central column. After the valve holder moves from the first position to the second position, the elastic claw protrudes from the outer surface of the central column and automatically engages with the upper positioning part, keeping the valve holder fixed in the second position on the central column. This reduces the risk of displacement of the valve holder under axial external force and improves the stability of the valve holder's closing function of the artificial heart valve.

[0012] In some embodiments, the lower positioning part is a groove disposed on the petal holder, the groove being disposed radially through the inner and outer sides of the petal holder. When the petal holder is in the first position, the elastic claw is engaged in the groove to prevent the petal holder from moving axially towards the proximal end relative to the central column. The upper positioning part is a slot disposed on the top surface of the petal holder, and the proximal end of the central column protrudes radially outward to form a limiting platform. When the petal holder moves from the first position to the proximal end to the second position, the elastic claw is squeezed into the clearance hole and accumulates elastic potential energy. The elastic potential energy is used to drive the elastic claw to reset and engage in the slot when the petal holder moves to the second position. The elastic claw and the limiting platform are respectively engaged on both axial sides of the petal holder to prevent the petal holder from moving axially relative to the central column.

[0013] By using a groove that radially penetrates the inner and outer sides of the petal holder, when the petal holder is in the first position, the elastic claw engages with the groove. Under the engaging action of the elastic claw and the groove, the axial movement of the petal holder relative to the central column is prevented, thus keeping the petal holder fixed in the first position. The upper positioning part is a slot set on the top surface of the valve holder. The proximal end of the central column protrudes radially outward to form a limiting platform. When it is necessary to close the valve angle, the locking part is removed, and the elastic claw is squeezed into the clearance hole and disengaged from the lower positioning part. The elastic claw accumulates elastic potential energy. At this time, the valve holder can move from the first position to the second position. This elastic potential energy can drive the elastic claw to automatically reset and lock into the slot after the valve holder moves to the second position. In this way, the elastic claw and the limiting platform are respectively locked on both sides of the valve holder along the axial direction, thereby preventing the valve holder from moving axially relative to the central column. This keeps the valve holder fixed at the second position of the central column, reducing the risk of displacement of the valve holder when subjected to axial external force and improving the stability of the valve holder's closing function of the artificial heart valve.

[0014] In some embodiments, a wire groove is provided at the distal end of the central column.

[0015] By setting a groove at the far end of the central column, the retrieval line can pass through the groove when it enters the central hole of the central column after passing the petal corner. The groove can limit the retrieval line and prevent it from shifting at the far end of the central column, thus improving the retrieval accuracy of the retrieval line to the petal corner.

[0016] In some embodiments, there are multiple wire grooves, which are distributed at intervals along the circumference of the central column and extend through the far end of the central column.

[0017] Since there are multiple petal angles, there are also multiple gathering lines. These are distributed circumferentially around the central column through multiple grooves. Each groove can accommodate one or more gathering lines, effectively limiting their positions and reducing the probability of knots. Furthermore, the grooves extend through the far end of the central column. This means that when arranging the gathering lines, compared to situations where the grooves don't extend through the far end and require the gathering lines to pass through holes in the grooves before entering the central column, the gathering lines can be directly inserted into the central hole from the far end of the central column. The gathering lines will then be directly pressed into the corresponding grooves from the far end of the central column, simplifying the arrangement of the gathering lines.

[0018] In some embodiments, each arm has four threading holes, including two first threading holes and two second threading holes; the two first threading holes located on the radially inner side are used to thread the fixing sutures for fixing the artificial heart valve, and the two second threading holes located on the radially outer side are used to thread the traction sutures for pulling the valve feet of the artificial heart valve.

[0019] By setting the number of suture holes in each arm to four—two first suture holes and two second suture holes—the artificial heart valve can be fixed to the valve holder arm by threading the fixation suture through the two first suture holes. The two second suture holes are used for closure sutures, which are used to close the valve angle. The fixation suture and the closure suture are threaded through different suture holes, which reduces the probability of knots between the fixation suture and the closure suture, and also makes it easier for medical staff to cut the fixation suture or the closure suture separately later.

[0020] In some embodiments, the support arm of the petal holder is provided with a clearance groove located between two first wire holes and two second wire holes, the clearance groove extending radially outward through the support arm.

[0021] By incorporating a clearance groove on the support arm located between two first and two second threading holes, the clearance groove exposes the fixing or retracting thread, providing space for suture cutting tools and reducing the difficulty for medical personnel to cut the fixing or retracting thread. Furthermore, the clearance groove extends radially outward through the support arm, allowing medical personnel to directly insert suture cutting tools from the outside of the groove to cut the fixing or retracting thread, making it easier to cut the thread.

[0022] In some embodiments, the artificial heart valve holder includes a connector that can be assembled to the proximal end of the central column. The connector includes an insertion portion that can be inserted into a central hole and a threaded connection portion. The insertion portion has a through hole, and the threaded connection portion has a radially penetrating knot hole.

[0023] A connector is provided near the center post, with a threaded connection portion for threaded connection between the center post and the handle, thus connecting the handle and the center post. The insertion portion of the connector can be inserted into the center hole, achieving a plug-in fit between the connector and the center post. The insertion portion has a through hole, and the threaded connection portion has a radially penetrating knotting hole, allowing one end of the take-up line to pass through the center hole and the through hole and then be knotted at the knotting hole, thus connecting the connector and the take-up line.

[0024] In some embodiments, the artificial heart valve holder includes a handle that is threadedly connected to a threaded connection portion.

[0025] The handle design makes it easier for medical staff to hold the valve holder, and the handle can also increase the length of the valve holder, making it easier for medical staff to place the artificial heart valve on the valve holder into the patient's target position.

[0026] Secondly, embodiments of this application provide an artificial heart valve holding system, which includes an artificial heart valve with multiple valve angles, an artificial heart valve holder, and a wire for connecting the artificial heart valve and the holder. The wire includes a through hole passing through the support arm and a condensing wire through the center hole, and the condensing wire forms condensing segments located on both sides of each valve angle.

[0027] The artificial heart valve is secured to the valve holder by a suture thread that passes through the suture holes in the valve arm. The suture thread also includes a zipper thread that passes through the suture holes in the valve arm and a central aperture. Zipper threads are positioned on the outer side of each valve angle of the artificial heart valve. One end of the zipper thread passes through the suture hole in the valve arm and is fixed there. The other end of the zipper thread goes around the outer surface of the valve angle and enters the central aperture from the distal end of the central post, connecting to the proximal side of the central post. As the central post moves axially distally relative to the valve holder, the zipper thread tightens, securing and positioning the valve angle. When the valve angle is closed using the valve holder, the zipper thread makes contact with the outer surface of the valve angle through compression; the zipper thread does not contact the valve leaflets, thus minimizing the risk of scratching or damaging the valve leaflets. When the valve holder is removed and the medical staff cuts the suture, the central column is at its highest point in the artificial heart valve holding system. During the removal process, the suture is less likely to touch the free edge of the valve leaflet, thus reducing the possibility of cuts and damage to the leaflet.

[0028] In some embodiments, a plurality of wire grooves are provided at the distal end of the central column, the plurality of wire grooves being distributed at intervals along the circumference of the central column and penetrating the distal end of the central column; the wire grooves are for at least one take-up wire to pass through.

[0029] Multiple wire grooves are provided at the far end of the central column. The wire grooves allow the take-up wire to pass through and can limit the take-up wire, preventing it from shifting at the far end of the central column. Of course, the wire grooves can accommodate one or more take-up wires, depending on the actual situation.

[0030] In some embodiments, each petal corner is provided with two convergence lines; the two convergence lines for the same petal corner are distributed in a crisscross pattern on the outer surface of the petal corner.

[0031] Two closing lines are set for each petal corner, and the two closing lines are distributed in a cross pattern on the outer side of the petal corner. During the process of tightening and closing the closing lines, since the two closing lines have overlapping parts, compared with two closing lines that do not overlap, the two closing lines can interact with each other and thus jointly apply a force to the petal corner in the direction of the central column, making the petal corner easier to close.

[0032] In some embodiments, the artificial heart valve holder includes a connector that can be assembled to the proximal end of the central column. The connector includes an insertion portion that can be inserted into a central hole and a threaded connection portion. The insertion portion has a through hole, and the threaded connection portion has a radially penetrating knot hole. One end of the gathered thread passes through the through hole and the knot hole to suture the connector to the central column.

[0033] The connector is equipped with a threaded connection part, which allows the handle of the valve holder to connect to the connector. The connector serves to connect the center column and the handle. The insertion part of the connector can be inserted into the center hole. The insertion part has a through hole, and the threaded connection part has a radially penetrating knotting hole, allowing one end of the gathered line to pass through the center hole and the through hole and then be knotted at the knotting hole, thus connecting the connector to the center column.

[0034] Thirdly, this application also provides a method for retracting an artificial heart valve holding system. Based on the aforementioned artificial heart valve holding system, the retracting method includes the following steps: removing the retaining member from the central column; moving the valve holding member and the artificial heart valve proximally relative to the central column; and using a retracting line to drive the valve angle to retract toward the central column.

[0035] During valve angle closure, only the retaining device needs to be removed, allowing the valve holder and artificial heart valve to move proximally relative to the central column. The closure thread then pulls the valve angle towards the central column, simplifying the closure process and making it easier for medical staff to operate, thus reducing the difficulty of the procedure. When using the valve holder to close the valve angle, the closure thread makes compression contact with the outer surface of the valve angle, without contacting the valve leaflet. This minimizes the risk of scratching or damaging the artificial heart valve leaflet. When the valve holder is withdrawn and the closure thread is cut, the central column is at its highest point in the artificial heart valve holding system. During withdrawal, the closure thread is less likely to come into contact with the free edge of the artificial heart valve leaflet, reducing the possibility of cuts or damage and extending the actual lifespan of the artificial heart valve.

[0036] In some embodiments, when the valve holder and the artificial heart valve move proximally relative to the central column, the elastic positioning arm disengages from the lower positioning portion on the valve holder and retracts into the clearance hole. The valve holder moves from the first position to the proximal end of the central column to the second position. The elastic positioning arm resets and engages with the upper positioning portion of the valve holder. The thread, acting as a retraction line, drives the valve angle to retract toward the central column.

[0037] After removing the locking piece, the elastic positioning arm disengages from the lower positioning part and retracts into the clearance hole. The petal holding piece loses the limiting effect of the elastic positioning arm, and the petal holding piece can move to the second position relative to the center column. The elastic positioning arm automatically resets and engages with the upper positioning part, so that the petal holding piece remains fixed in the second position on the center column, keeping the petal corner in a closed state, and the closing stability of the petal corner is higher.

[0038] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 Schematic diagram of the structure of an artificial heart valve holder provided in some embodiments of this application;

[0041] Figure 2 for Figure 1 Cross-sectional view of the valve holder for a Chinese artificial heart valve;

[0042] Figure 3 A schematic diagram of the central column of an artificial heart valve holder provided in some embodiments of this application;

[0043] Figure 4 This is a schematic diagram of the structure of the valve holder of the artificial heart valve holder provided in some embodiments of this application;

[0044] Figure 5 A schematic diagram of the structure of an artificial heart valve holder in the first position, as provided in some embodiments of this application;

[0045] Figure 6 A schematic diagram of the structure of an artificial heart valve holder in a second position, as provided in some embodiments of this application;

[0046] Figure 7 Schematic diagram of the structure of an artificial heart valve holding system provided in some embodiments of this application;

[0047] Figure 8 for Figure 7 A schematic diagram of a Chinese artificial heart valve holding system with a handle installed.

[0048] Icons: 100-Valve holder; 10-Central column; 11-Central hole; 12-Proximal end; 13-Distal end; 14-Wire groove; 15-Guide part; 16-Limiting platform; 17-Allowing hole; 20-Valve holder; 21-Support arm; 211-Allowing groove; 22-Wire hole; 221-First wire hole; 222-Second wire hole; 23-Upper positioning part; 24-Lower positioning part; 25-Through hole; 26-Guide groove; 30-Positioning part; 40-Elastic positioning arm; 41-Body; 42-Elastic claw; 50-Connector; 51-Insert part; 511-Wire hole; 52-Threaded connection part; 521-Wire knot hole; 60-Handle; 200-Artificial heart valve; 201-Valve angle; 202-Collapsing suture. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of this application presented in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use. This is only for the convenience of describing this application and simplifying the description, and does 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. Therefore, it should not be construed as a limitation of this application. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0053] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0054] Example

[0055] This application provides an artificial heart valve holder. Please refer to... Figures 1 to 8 The artificial heart valve holder 100 includes a central column 10, a valve holder 20, and a locking member 30. The central column 10 has a distal end 13 and a proximal end 12 that are axially opposite to each other, and a central hole 11 that passes through the proximal end 12 and the distal end 13. The valve holder 20 is mounted on the central column 10. The valve holder 20 and the central column 10 are movable relative to each other along the axial direction of the central column 10. The valve holder 20 is provided with a support arm 21 that protrudes in the radial direction of the central column 10, and the support arm 21 is provided with a threading hole 22. The locking member 30 is detachably assembled between the proximal end 12 of the central column 10 and the valve holder 20 and abuts against the proximal end 12 of the central column 10 and the valve holder 20 respectively. When the locking member 30 is detached, the central column 10 can move relative to the valve holder 20 in the axial direction toward the distal end 13.

[0056] In this scheme, when assembling the valve holder 20 with the artificial heart valve 200, the artificial heart valve 200 is placed on the valve holder 20 after the support arm 21 is provided with a threading hole 22. Then, a fixing wire is passed back and forth through the threading hole 22 of the support arm 21 to tie and fix the artificial heart valve 200 to the support arm 21 of the valve holder 20, thus completing the fixation of the artificial heart valve 200. Then, a zipper segment is arranged on the outside of each valve angle 201 of the artificial heart valve 200. One end of the zipper 202 passes through the suture hole 22 on the support arm 21 and is fixed to the support arm 21. It passes through the central hole 11 on the central column 10. The zipper 202 does not need to be sutured to the valve angle 201 of the artificial heart valve 200. The other end of the zipper 202 directly bypasses the outer side of the valve angle 201 of the artificial heart valve 200 and enters the central hole 11 from the distal end 13 of the central column 10 and connects to the proximal end 12 side of the central column 10. When the central column 10 moves axially toward the distal end 13 relative to the valve holder 20, the zipper 202 is tightened to achieve the binding and positioning of the valve angle 201. When the valve holder 100 is used to close the valve angle 201, the closing line 202 is in a squeezing contact with the outer surface of the valve angle 201, and the closing line 202 does not contact the valve leaflet. Therefore, the closing line 202 is unlikely to cause scratches or damage to the valve leaflet of the artificial heart valve 200. When the valve holder 100 is withdrawn and the medical staff cuts the closing line 202, the central column 10 is at its highest point in the artificial heart valve holding system. During the withdrawal process, the closing line 202 is unlikely to come into contact with the free edge of the valve leaflet of the artificial heart valve 200, thus reducing the possibility of cuts or damage to the valve leaflet.

[0057] Specifically, when using the valve holder to close the valve angle 201, since the valve holder 20 is movably mounted on the central column 10, and the central column 10 is equipped with a retaining element 30, only the retaining element 30 needs to be removed. This allows the valve holder 20 and the artificial heart valve 200 to move relative to the central column 10 towards the proximal end 12. The thread 202, acting as the closing line, is further tightened, thereby driving the valve angle 201 to close towards the central column 10, achieving the closing of the valve angle 201. During the closing process of the valve angle 201, because the closing line 202 and the outer surface of the valve angle 201 are in a compressive contact relationship, and the leaflet is located on the inner side of the valve angle 201, the closing line 202 will not contact the leaflet, thus reducing the risk of cutting the leaflet of the artificial heart valve 200. Compared to the valve holder structure in the prior art, the valve holder 100 has a simple structure and is easy for medical personnel to operate, reducing the operational difficulty for medical personnel. When removing the valve holder, medical staff only need to cut the suture 202 pre-sewn onto the support arm 21. The suture 202 is pulled out along the central hole 11 of the central column 10, setting the height of the distal end 13 of the central column 10 higher than the top of the artificial heart valve 200. That is, the central column 10 is at its highest point in the artificial heart valve holding system. During the removal process, the suture 202 is less likely to touch the free edge of the leaflet of the artificial heart valve 200, and is less likely to cause wear and damage to the free edge of the leaflet, thus playing a role in not damaging the free edge of the leaflet and extending the actual service life of the artificial heart valve 200. Finally, the fixing line is cut and the valve holder 100 is removed.

[0058] In this designation, distal end 13 and proximal end 12 are relative to the medical staff. The end of the central column 10 closer to the medical staff is the proximal end 12, and the end farther from the medical staff is the distal end 13. The valve holder 20 has a through hole 25 in its middle portion that matches the size of the central column 10, and the valve holder 20 is fitted onto the central column 10 through the through hole 25. The cross-sectional shape of the central column 10 can be various, such as circular, square, or triangular. In this embodiment, the cross-sectional shape of the central column 10 is circular.

[0059] The locking component 30 and the center post 10 can be connected in various ways, such as snap-fit, screw-fit, plug-in, or interference fit.

[0060] Optionally, the locking component 30 is engaged with the central column 10. The locking component 30 is provided with a buckle, and the central column 10 is provided with a corresponding slot that cooperates with the buckle, so that medical staff can remove the locking component 30 from the central column 10.

[0061] In some embodiments, please combine Figure 1 and Figure 5Either the central column 10 or the petal holder 20 is provided with an axially oriented guide portion 15, and the other is provided with a guide groove 26 that mates with the guide portion 15. By providing the guide portion 15 and the guide groove 26 on the central column 10 and the petal holder 20 respectively, and by having the guide portion 15 and the guide groove 26 mate, the risk of relative rotation of the petal holder 20 relative to the central column 10 is reduced, resulting in higher stability of the petal holder 20 during its sliding process on the central column 10.

[0062] In this configuration, either the central column 10 or the petal holder 20 is provided with a guide portion 15 along the axial direction, and the other is provided with a guide groove 26 that cooperates with the guide portion 15. This means that the central column 10 may be provided with a guide portion 15 and the petal holder 20 may be provided with a corresponding guide groove 26; or, the central column 10 may be provided with a guide groove 26 and the petal holder 20 may be provided with a guide portion 15.

[0063] For example, a guide portion 15 protrudes from the central column 10, and the guide portion 15 is a guide post. A guide groove 26 is correspondingly provided on the petal holder 20, and the guide groove 26 guides and engages with the guide portion 15. The number of guide portions 15 can be one or more. When there are multiple guide portions 15, the multiple guide portions 15 are distributed circumferentially at intervals on the central column 10, and the number and position of the petal holder 20 in the guide groove 26 correspond one-to-one with the number and position of the guide portions 15.

[0064] In some embodiments, please combine Figure 5 and Figure 6 The petal holder 20 has an upper positioning part 23 and a lower positioning part 24, and the central column 10 is provided with an elastic positioning arm 40; the petal holder 20 has a first position and a second position in the axial direction of the central column 10, the first position being closer to the distal end 13 of the central column 10 than the second position; wherein, as Figure 5 As shown, when the petal holder 20 is in the first position, the elastic positioning arm 40 engages with the lower positioning part 24, and the locking member 30 is installed between the proximal end 12 of the central column 10 and the petal holder 20; Figure 6As shown, when the petal holder 20 moves to the second position relative to the central post 10 towards the proximal end 12, the elastic positioning arm 40 engages with the upper positioning part 23. Since the petal holder 20 can move between the first and second positions on the central post 10, through the arrangement of the upper positioning part 23 and the lower positioning part 24 of the petal holder 20 and the elastic positioning arm 40 on the central post 10, when the petal holder 20 is in the first position, the elastic positioning arm 40 engages with the lower positioning part 24, and the locking member 30 is installed between the proximal end 12 of the central post 10 and the petal holder 20, thereby restricting the movement of the petal holder 20 towards the proximal end 12 of the central post 10 to the second position, so that the petal holder 20 remains fixed at the first position of the central post 10. When it is necessary to close the petal angle 201, remove the locking piece 30, allowing the elastic positioning arm 40 to disengage from the lower positioning part 24. The petal holding piece 20 can then move relative to the central column 10 to the proximal end 12 to the second position, and the elastic positioning arm 40 engages with the upper positioning part 23, so that the petal holding piece 20 remains fixed at the second position on the central column 10, maintaining the petal angle 201 in a closed state, resulting in higher stability of the petal angle 201 closing.

[0065] In some embodiments, please combine Figure 3 , Figure 5 and Figure 6 The central column 10 has a clearance hole 17 at the elastic positioning arm 40 that communicates with the central hole 11. The elastic positioning arm 40 includes a body 41 and an elastic claw 42. One end of the body 41 is connected to the central column 10, and the other end of the body 41 is connected to the elastic claw 42. The elastic claw 42 protrudes from the outer surface of the central column 10 and is used to move toward the clearance hole 17 when subjected to external pressure, so as to disengage from the upper positioning part 23 or the lower positioning part 24. By providing the clearance hole 17 on the central column 10, when it is necessary to unlock the elastic positioning arm 40 from the upper positioning part 23 or the lower positioning part 24, it is only necessary to apply pressure to the elastic claw 42, so that the elastic claw 42 is squeezed into the clearance hole 17, thereby unlocking the elastic claw 42 from the upper positioning part 23 or the lower positioning part 24. In this way, the holding member 20 can switch between a first position and a second position on the central column 10. After the valve holder 20 moves from the first position to the second position, the elastic claw 42 protrudes from the outer surface of the central column 10 and can automatically engage with the upper positioning part 23, keeping the valve holder 20 fixed in the second position of the central column 10. This reduces the risk of displacement of the valve holder 20 when subjected to axial external force and improves the stability of the valve holder 20 in the closing function of the artificial heart valve 200.

[0066] The shape of the clearance hole 17 can be various. The shape of the clearance hole 17 is an elongated hole, and the extension direction of the elongated hole is the axial direction of the central column 10.

[0067] In some embodiments, please combine Figure 1 , Figure 5 and Figure 6 The lower positioning part 24 is a groove provided on the petal holder 20. The groove is provided radially through the inner and outer sides of the petal holder 20. When the petal holder 20 is in the first position, the elastic claw 42 is engaged in the groove to prevent the petal holder 20 from moving axially toward the proximal end 12 relative to the central column 10. The upper positioning part 23 is a slot provided on the top surface of the petal holder 20. The proximal end 12 of the central column 10 protrudes radially outward to form a limiting platform 16. When the petal holder 20 moves from the first position to the proximal end 12 to the second position, the elastic claw 42 is squeezed into the clearance hole 17 and accumulates elastic potential energy. The elastic potential energy is used to drive the elastic claw 42 to reset and engage in the slot when the petal holder 20 moves to the second position. The elastic claw 42 and the limiting platform 16 are respectively engaged on both sides of the axial direction of the petal holder 20 to prevent the petal holder 20 from moving axially relative to the central column 10.

[0068] By using a groove provided radially through the inner and outer sides of the holding member 20 for the lower positioning part 24, when the holding member 20 is in the first position, the elastic claw 42 is engaged in the groove. Under the engaging action of the elastic claw 42 and the groove, the holding member 20 is prevented from moving axially relative to the central column 10, so that the holding member 20 remains fixed in the first position. The upper positioning part 23 is adopted as a slot set on the top surface of the valve holder 20. The proximal end 12 of the central column 10 protrudes radially outward to form a limiting platform 16. When it is necessary to close the valve angle 201, the locking part 30 is removed, and the elastic claw 42 is squeezed into the clearance hole 17 and disengaged from the lower positioning part 24. The elastic claw 42 accumulates elastic potential energy. At this time, the valve holder 20 can move from the first position to the second position. This elastic potential energy can drive the elastic claw 42 to automatically reset and lock into the slot after the valve holder 20 moves to the second position. In this way, the elastic claw 42 and the limiting platform 16 are respectively locked on both sides of the axial direction of the valve holder 20, thereby preventing the valve holder 20 from moving axially relative to the central column 10. This keeps the valve holder 20 fixed at the second position of the central column 10, reducing the risk of displacement of the valve holder 20 when subjected to axial external force and improving the stability of the valve holder 20 in the closing function of the artificial heart valve 200.

[0069] Of course, the upper positioning part 23 can also be the same groove structure as the lower positioning part 24. That is, the upper positioning part 23 can also be a groove structure that radially penetrates the inner and outer sides of the holding piece 20. In this case, it is not necessary to set a limiting platform 16 at the proximal end 12 of the central column 10.

[0070] It should be noted that there are several ways to move the elastic claw 42 towards the clearance hole 17. For example, a tool can be directly inserted into the groove and the elastic claw 42 can be squeezed to move it towards the clearance hole 17. Alternatively, a guide slope can be provided on the outer side of the elastic claw 42. By forcefully sliding the holding piece 20 towards the proximal end 12 of the central post 10, the elastic claw 42 is automatically squeezed into the clearance hole 17 by the inner wall of the holding piece 20 under the guidance of the guide slope, which also achieves the movement of the elastic claw 42 towards the clearance hole 17.

[0071] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 A wire groove 14 is provided at the distal end 13 of the central column 10. By providing a wire groove 14 at the distal end 13 of the central column 10, when the take-up wire 202 enters the central hole 11 of the central column 10 after passing through the petal corner 201, the wire groove 14 allows the take-up wire 202 to pass through. The wire groove 14 can limit the take-up wire 202, preventing the take-up wire 202 from shifting at the distal end 13 of the central column 10, thereby improving the take-up accuracy of the take-up wire 202 to the petal corner 201.

[0072] In some embodiments, there are multiple grooves 14, which are distributed circumferentially around the central column 10 and extend through the distal end 13 of the central column 10. Since there are multiple petal corners 201, there are multiple gathering lines 202. With multiple grooves 14 distributed circumferentially around the central column 10, each groove 14 can accommodate one or more gathering lines 202, so that the positions of the multiple gathering lines 202 can be effectively limited, reducing the probability of knots between the multiple gathering lines 202. Furthermore, the cable trough 14 is set to pass through the far end 13 of the central column 10. In this way, when arranging the take-up cable 202, compared to the cable trough 14 not passing through the far end 13 of the central column 10, where the take-up cable 202 needs to be passed through the hole in the cable trough 14 to enter the central column 10, the take-up cable 202 can be directly passed from the far end 13 of the central column 10 into the central hole 11. The take-up cable 202 will be directly pressed into the corresponding cable trough 14 from the far end 13 of the central column 10, which reduces the difficulty of arranging the take-up cable 202.

[0073] In this embodiment, there are three lobes 201, which are distributed circumferentially at intervals.

[0074] In some embodiments, please combine Figure 1 and Figure 4Each support arm 21 has four threading holes 22, including two first threading holes 221 and two second threading holes 222. The two first threading holes 221 located on the radial inner side are used to thread the fixing wire for fixing the artificial heart valve 200, and the two second threading holes 222 located on the radial outer side are used to thread the traction wire 202 for pulling the valve foot of the artificial heart valve 200. By setting the number of threading holes 22 in each arm 21 to four (two first threading holes 221 and two second threading holes 222), the artificial heart valve 200 can be fixed to the arm 21 of the valve holder 20 by threading the fixing wire through the two first threading holes 221. The two second threading holes 222 are used to arrange the traction wire 202, which is used to achieve the function of closing the valve angle 201. The fixing wire and the traction wire 202 are threaded through different threading holes 22, which reduces the probability of knots between the traction wire 202 and the fixing wire, and also makes it easier for medical staff to cut the fixing wire or the traction wire 202 separately.

[0075] In some embodiments, please refer to Figure 1 and Figure 4 The support arm 21 of the valve holder 20 is provided with a clearance groove 211 located between two first threading holes 221 and two second threading holes 222. The clearance groove 211 extends radially outward through the support arm 21. By providing the clearance groove 211 on the support arm 21, located between the two first threading holes 221 and two second threading holes 222, the clearance groove 211 can expose the fixing wire or the gathering wire 202, making room for the suture cutting tool and reducing the difficulty for medical staff to cut the fixing wire or the gathering wire 202. Furthermore, since the clearance groove 211 extends radially outward through the support arm 21, medical staff can directly use the suture cutting tool to reach into the clearance groove 211 from the outside to cut the fixing wire or the gathering wire 202, making it easier to cut the fixing wire or the gathering wire 202.

[0076] In some embodiments, please refer to Figure 1 and Figure 2The artificial heart valve holder 100 includes a connector 50 that can be assembled to the proximal end 12 of the central column 10. The connector 50 includes an insertion part 51 that can be inserted into a central hole 11 and a threaded connection part 52. The insertion part 51 has a through hole 511, and the threaded connection part 52 has a radially penetrating knot hole 521. By providing the connector 50 at the proximal end 12 of the central column 10, and the threaded connection part 52 on the connector 50, a threaded connection can be made between the central column 10 and the handle 60, thus connecting the handle 60 and the central column 10. The insertion part 51 of the connector 50 can be inserted into the central hole 11, thus achieving the insertion and engagement of the connector 50 and the central column 10. The insertion part 51 is provided with a through hole 511, and the threaded connection part 52 has a radially penetrating knotting hole 521, so that one end of the gathering line 202 can pass through the center hole 11 and the through hole 511 and then be knotted at the knotting hole 521, so that one end of the gathering line 202 is connected to the connector 50.

[0077] In some embodiments, please refer to Figure 8 The artificial heart valve holder 100 includes a handle 60, which is threadedly connected to a threaded connection portion 52. The handle 60 is designed to facilitate the gripping of the valve holder 100 by medical personnel, and the handle 60 can increase the length of the valve holder 100, which is convenient for medical personnel to place the artificial heart valve 200 on the valve holder 100 into the target position on the patient.

[0078] This application provides an artificial heart valve holding system, which includes an artificial heart valve 200 having multiple valve angles 201, an artificial heart valve holder 100, and a wire for connecting the artificial heart valve 200 and the holder 100. The wire includes a wire hole 22 passing through the support arm 21 and a central hole 11, and the wire 202 forms a wire segment located on both sides of each valve angle 201.

[0079] The artificial heart valve 200 is secured to the support arm 21 of the valve holder 20 by a thread that passes back and forth through the thread hole 22 of the support arm 21. The thread also includes a zipper 202 that passes through the thread hole 22 of the support arm 21 and the central hole 11. In this way, zipper segments are arranged on the outside of each valve angle 201 of the artificial heart valve 200. One end of the zipper 202 passes through the thread hole 22 on the support arm 21 and is fixed to the support arm 21. The other end of the zipper 202 goes directly around the outer side of the valve angle 201 of the artificial heart valve 200 and enters the central hole 11 from the distal end 13 of the central column 10 and connects to the connector 50 on the proximal end 12 side of the central column 10. When the central column 10 moves axially toward the distal end 13 relative to the valve holder 20, the zipper 202 is tightened, thereby binding and positioning the valve angle 201. When the valve holder 100 is used to close the valve angle 201, the closing line 202 is in a squeezing contact with the outer surface of the valve angle 201, and the closing line 202 does not contact the valve leaflet. Therefore, the closing line 202 is unlikely to cause scratches or damage to the valve leaflet of the artificial heart valve 200. When the valve holder 100 is withdrawn and the medical staff cuts the closing line 202, the central column 10 is at its highest point in the artificial heart valve holding system. During the withdrawal process, the closing line 202 is unlikely to come into contact with the free edge of the valve leaflet of the artificial heart valve 200, thus reducing the possibility of cuts or damage to the valve leaflet.

[0080] The sutures include a fixing suture and a gathering suture 202. The fixing suture and the gathering suture 202 can be ordinary medical sutures, and the material can be PET, PP, etc. The thickness of the sutures can be selected according to actual needs.

[0081] In some embodiments, a plurality of wire grooves 14 are provided at the distal end 13 of the central column 10. The plurality of wire grooves 14 are distributed at intervals along the circumference of the central column 10 and penetrate the distal end 13 of the central column 10. The wire grooves 14 are for at least one take-up wire 202 to pass through. By providing a plurality of wire grooves 14 at the distal end 13 of the central column 10, the wire grooves 14 can be used for the take-up wire 202 to pass through. The wire grooves 14 can limit the take-up wire 202 and prevent the take-up wire 202 from shifting at the distal end 13 of the central column 10. Of course, the wire grooves 14 can be used for one or more take-up wires 202 to pass through, depending on the actual situation.

[0082] In some embodiments, such as Figure 7As shown, each petal corner 201 is provided with two convergence lines 202; the two convergence lines 202 for the same petal corner 201 are distributed in a crisscross pattern on the outer surface of the petal corner 201. By providing two convergence lines 202 for each petal corner 201, and the two convergence lines 202 being distributed in a crisscross pattern on the outer surface of the petal corner 201, during the tightening and convergence process, because the two convergence lines 202 have overlapping parts, compared to two convergence lines 202 without overlapping parts, the two convergence lines 202 can interact with each other, thereby jointly applying a force to the petal corner 201 in the direction of the central column 10, making the petal corner 201 easier to converge.

[0083] In some embodiments, please refer to Figure 1 and Figure 2 The artificial heart valve holder 100 includes a connector 50 that can be assembled to the proximal end 12 of the central column 10. The connector 50 includes an insertion part 51 that can be inserted into the central hole 11 and a threaded connection part 52. The insertion part 51 has a through hole 511, and the threaded connection part 52 has a radially penetrating knot hole 521. One end of the gathering thread 202 passes through the through hole 511 and the knot hole 521 to suture the connector 50 to the central column 10. The connector 50 is provided with a threaded connection part 52, which allows the valve holder handle 60 to be connected to the connector 50. The connector 50 serves to connect the central column 10 and the handle 60. The insertion part 51 of the connector 50 can be inserted into the central hole 11. The insertion part 51 is provided with a through hole 511, and the threaded connection part 52 has a radially penetrating knotting hole 521, so that one end of the take-up line 202 can pass through the central hole 11 and the through hole 511 and then be knotted at the knotting hole 521, thereby connecting the connector 50 to the central column 10. When the take-up line 202 of the support arm 21 is cut, the connector 50 can pull the take-up line 202 out of the central column 10 together.

[0084] This application also provides a method for closing an artificial heart valve holding system. Based on the aforementioned artificial heart valve holding system, the closing method includes the following steps: removing the retaining member 30 from the central column 10; moving the valve holding member 20 and the artificial heart valve 200 relative to the central column 10 proximally to the central column 12, and the thread member serving as the closing line 202 drives the valve angle 201 to close towards the central column 10. When closing the valve angle 201, only the retaining member 30 needs to be removed, and the valve holding member 20 and the artificial heart valve 200 need to be moved proximally to the central column 10. The thread member serving as the closing line 202 can then drive the valve angle 201 to close towards the central column 10, simplifying the valve angle 201 closing process and making the operation simple for medical personnel, thus reducing the operational difficulty for them. During the process of closing the valve angle 201 using the valve holder 100, the closing line 202 is in a squeezing contact with the outer surface of the valve angle 201, and the closing line 202 does not contact the valve leaflet. Therefore, the closing line 202 is unlikely to cause scratches or damage to the valve leaflet of the artificial heart valve 200. When the valve holder 100 is withdrawn and the medical staff cuts the closing line 202, the central column 10 is at its highest point in the artificial heart valve holding system. During the withdrawal process, the closing line 202 is unlikely to come into contact with the free edge of the valve leaflet of the artificial heart valve 200, thus reducing the possibility of cuts or damage to the valve leaflet.

[0085] In some embodiments, when the valve holder 20 and the artificial heart valve 200 move towards the proximal end 12 relative to the central column 10, the elastic positioning arm 40 disengages from the lower positioning portion 24 on the valve holder 20 and retracts into the clearance hole 17. The valve holder 20 moves from the first position to the proximal end 12 of the central column 10 to the second position. The elastic positioning arm 40 resets and engages with the upper positioning portion 23 of the valve holder 20. The thread member serving as the retraction line 202 drives the valve angle 201 to retract towards the central column 10. After removing the locking piece 30, the elastic positioning arm 40 disengages from the lower positioning part 24 and retracts into the clearance hole 17. The petal holding piece 20 loses the limiting function of the elastic positioning arm 40, and the petal holding piece 20 can move relative to the central column 10 to the proximal end 12 to the second position. The elastic positioning arm 40 automatically resets and engages with the upper positioning part 23, so that the petal holding piece 20 remains fixed at the second position on the central column 10, keeping the petal angle 201 in a closed state, and the closing stability of the petal angle 201 is higher.

[0086] The following explains the entire implementation process and principle of the artificial heart valve holding system:

[0087] 1. Sewing: After the valve holder 100 is assembled, the locking component 30 is installed on the central column 10, and the valve holder 20 is in the first position on the central column 10. The elastic positioning arm 40 is engaged with the lower positioning part 24 on the valve holder 20. The artificial heart valve 200 is fixed to the valve holder 20 using a fixing suture passed through the first suture hole 221, and then the suture is gathered. Both the fixing suture and the gathering suture can be ordinary medical sutures. For each valve angle, two gather-down threads 202 are used. One end of the gather-down thread 202 is fixed to the support arm 21 of the valve holder 20 through the second thread hole 222. The other ends of the two gather-down threads 202 are routed around the corresponding valve angle 201 of the artificial heart valve 200 towards the distal end 13 of the central column 10, and then passed through the central hole 11 from the distal end 13 of the central column 10. They are then knotted and fixed to the connector 50 at the proximal end of the central column 10, ensuring that the gather-down threads 202 are bound and kept properly tightened. The two gather-down threads 202 are distributed crosswise on the outside of the valve angle 201, and the gather-down threads 202 limit and fix the valve angle 201 of the artificial heart valve 200 to the valve holder 20.

[0088] 2. Valve Angle Closure: Remove the retaining element 30, disengaging the elastic positioning arm 40 from the lower positioning part 24 on the valve holder 20. During the procedure, the surgeon uses sterile tools to advance the valve holder 20 along the central column 10 from the first position towards the proximal end 12 to the second position. The elastic positioning arm 40 engages with the upper positioning part 23. The limiting platform 16 on the central column 10 and the elastic positioning arm 40 together axially limit the valve holder 20, keeping it relatively stationary. At this time, the closure suture 202 is forced to tighten due to the advancement stroke. The closure suture 202, which crosses and binds the valve angle 201, pushes the valve angle 201 towards the axis of the artificial heart valve 200 after tightening, achieving the function of closing the valve angle 201. The closure suture 202 achieves the function of closing the valve angle 201 without sewing the fabric at the valve angle 201.

[0089] 3. Valve Holder Removal: During removal, the surgeon cuts the suture 202 pre-stitched on the support arm 21, and removes the connector 50 and the suture 202 pre-knotted on the connector 50 from the central column 10. At this time, the suture 202 is completely removed along the central hole 11 of the central column 10. Because the distal end 13 of the central column 10 is at its highest point in the overall artificial heart valve holding system, the suture 202 is less likely to touch the free edge of the leaflet of the artificial heart valve 200, thus preventing wear and damage to the free edge and extending the actual service life of the artificial heart valve 200. Finally, the surgeon cuts the fixing suture on the support arm 21 that secures the artificial heart valve, removing the entire valve holder 100 from the body. The artificial heart valve 200 remains in the pre-stitched position, and the surgery is complete.

[0090] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0091] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An artificial heart valve holder, characterized in that, include: A central post having a distal end and a proximal end that are axially opposite to each other, and a central hole penetrating the proximal end and the distal end; A petal holder is mounted on the central column; the petal holder and the central column are movable relative to each other along the axial direction of the central column; the petal holder is provided with a support arm that protrudes in the radial direction of the central column; the support arm is provided with a wire hole. The locking component is detachably assembled between the proximal end of the central column and the petal holder, and respectively abuts against the proximal end of the central column and the petal holder; When the locking component is disassembled, the central column can move axially toward the distal end relative to the holding component; The petal holder has an upper positioning part and a lower positioning part, and the central column is provided with an elastic positioning arm; The petal holder has a first position and a second position in the axial direction of the central column, wherein the first position is closer to the distal end of the central column than the second position. When the petal holder is in the first position, the elastic positioning arm engages with the lower positioning part, and the locking member is installed between the proximal end of the central column and the petal holder; when the petal holder moves relative to the central column to the proximal end to the second position, the elastic positioning arm engages with the upper positioning part.

2. The artificial heart valve holder as described in claim 1, characterized in that, Either the central column or the petal holder is provided with an axial guide portion, and the other is provided with a guide groove that mates with the guide portion.

3. The artificial heart valve holder as described in claim 1, characterized in that, The central column has a clearance hole at the elastic positioning arm that communicates with the central hole; The elastic positioning arm includes a body and an elastic claw. One end of the body is connected to the central column, and the other end of the body is connected to the elastic claw. The elastic claw protrudes from the outer surface of the central column and is used to move toward the clearance hole when subjected to external extrusion force, so as to disengage from the upper positioning part or the lower positioning part.

4. The artificial heart valve holder as described in claim 3, characterized in that, The lower positioning part is a groove provided on the petal holder. The groove is provided radially through the inner and outer sides of the petal holder. When the petal holder is in the first position, the elastic claw is engaged in the groove to prevent the petal holder from moving axially towards the proximal end relative to the central column. The upper positioning part is a slot provided on the top surface of the petal holder, and the proximal end of the central column protrudes radially outward to form a limiting platform; When the petal holder moves from the first position to the second position, the elastic claw is squeezed into the clearance hole and accumulates elastic potential energy. The elastic potential energy is used to drive the elastic claw to reset and engage in the slot when the petal holder moves to the second position. The elastic claw and the limiting platform are respectively engaged on both sides of the axial direction of the petal holder to prevent the petal holder from moving axially relative to the central column.

5. The artificial heart valve holder as described in claim 1, characterized in that, A wire groove is provided at the far end of the central column.

6. The artificial heart valve holder as described in claim 5, characterized in that, The number of the grooves is multiple, and the multiple grooves are distributed at intervals along the circumference of the central column and penetrate the far end of the central column.

7. The artificial heart valve holder as described in claim 1, characterized in that, The number of the wire holes in each of the support arms is set to four, including two first wire holes and two second wire holes; The two first threading holes located on the radially inner side are used to thread the fixing suture for securing the artificial heart valve, and the two second threading holes located on the radially outer side are used to thread the traction suture for pulling the valve foot of the artificial heart valve.

8. The artificial heart valve holder as described in claim 7, characterized in that, The support arm of the valve holder is provided with a clearance groove located between the two first threading holes and the two second threading holes, and the clearance groove extends radially outward through the support arm.

9. The artificial heart valve holder as described in claim 1, characterized in that, The artificial heart valve holder includes: A connector that can be assembled to the proximal end of the central post, the connector including an insertion part that can be inserted into the central hole and a threaded connection part, the insertion part having a through hole and the threaded connection part having a radially penetrating knot hole.

10. The artificial heart valve holder as described in claim 9, characterized in that, The artificial heart valve holder includes: The handle is threadedly connected to the threaded connection part.

11. An artificial heart valve holding system, characterized in that, The device includes an artificial heart valve having multiple valve angles, an artificial heart valve holder as described in any one of claims 1-10, and a grommets for connecting the artificial heart valve and the holder, the grommets including a threading hole passing through the arm and a zippered wire through a central hole, the zippered wire forming zippered segments located on both sides of each valve angle.

12. The artificial heart valve holding system as described in claim 11, characterized in that, The distal end of the central column is provided with a plurality of grooves, which are distributed at intervals along the circumference of the central column and penetrate the distal end of the central column. The groove is for at least one of the take-up wires to pass through.

13. The artificial heart valve holding system as described in claim 11, characterized in that, Each of the aforementioned petal angles is provided with two converging lines; The two convergence lines of the same lobe angle are distributed in a crisscross pattern on the outer surface of the lobe angle.

14. The artificial heart valve holding system as described in claim 11, characterized in that, The artificial heart valve holder includes: A connector that can be assembled to the proximal end of the central post, the connector including an insertion part that can be inserted into the central hole and a threaded connection part, the insertion part having a through hole and the threaded connection part having a radially penetrating knot hole; One end of the gathering line passes through the through hole and the knot hole to connect with the connector.

15. A method for retracting an artificial heart valve holding system, based on the artificial heart valve holding system as described in any one of claims 11-14, characterized in that, Includes the following steps: Remove the locking component from the center column; The valve holder and artificial heart valve move proximally relative to the central column, and the thread, acting as a closing line, causes the valve angle to close towards the central column.

16. The method for retracting the artificial heart valve holding system as described in claim 15, characterized in that, When the valve holder and the artificial heart valve move proximally relative to the central column, the elastic positioning arm disengages from the lower positioning part on the valve holder and retracts into the clearance hole. The valve holder moves from the first position to the proximal end of the central column to the second position. The elastic positioning arm resets and engages with the upper positioning part of the valve holder. The thread, acting as a convergence line, drives the valve angle to converge toward the central column.

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