CN117530811B - A suture-free aortic valve for cardiac surgery - Google Patents

Abstract

The invention relates to a suture-free aortic valve for cardiac surgery, and relates to the technical field of medical appliances. The valve support comprises a valve support, wherein a lantern ring is arranged on the outer side of the valve support, a clamping groove is formed in the outer side of the lantern ring, expansion blocks which are circumferentially arranged are fixedly connected on the outer side of the lantern ring, a three-leaf valve is arranged in the valve support, a memory metal rod which is circumferentially arranged is fixedly connected on the outer side of the valve support, an extrusion part is fixedly connected between the adjacent memory metal rods, and the extrusion part is matched with the human valve ring and the adjacent human valve. According to the invention, the clamping grooves are mutually clamped with the human valve annulus, the expansion block expands in blood, the fixing effect of the lantern ring is enhanced, and meanwhile, when interventional therapy is carried out, the extrusion part and the valve bracket oppositely extrude the human valve, so that the valve bracket is fixed stably, the occurrence of a synovium of the valve bracket is effectively avoided, and the treatment effect on a patient is ensured.

Description

A suture-free aortic valve for cardiac surgery

Technical Field

The invention relates to the technical field of medical devices, and in particular to a suture-free aortic valve used in cardiac surgery.

Background Art

Aortic valve disease is a common heart disease, including aortic valve insufficiency and aortic valve calcification. When treating aortic valve disease, it is necessary to replace the aortic valve with an artificial valve. As a medical device for treating aortic valve and other heart valve diseases, artificial valves play an important role in heart valve replacement surgery.

When treating patients with aortic valve disease, due to differences in physical conditions among different patients, doctors choose open-chest surgery or interventional surgery based on the patient's physical condition. However, the existing aortic valve is only suitable for one of the treatment methods, resulting in a small scope of application and unable to meet the needs of all patients. In addition, the calcification and hardening of the patient's aortic valve will cause the artificial valve to be unable to fit tightly with the valve ring during interventional treatment, resulting in paravalvular leakage, affecting the normal flow of blood in the heart, and making it impossible to guarantee the treatment effect.

Summary of the invention

The present invention provides a suture-free aortic valve for cardiac surgery, aiming to overcome the shortcomings of the aortic valve in the above-mentioned background technology that is not applicable to different surgical methods, has a small scope of use, and the artificial valve cannot fit tightly with the valve ring, resulting in paravalvular leakage.

Technical solution: A sutureless aortic valve for cardiac surgery, comprising a valve stent, the upper end of the valve stent is provided with a connector connected to a conveyor, a collar is installed on the outer side of the valve stent, a depression is provided on the inner side of the collar, a positioning groove is provided on the outer side of the collar, circumferentially arranged expansion blocks are fixedly connected to the outer side of the collar, a three-leaf valve is installed inside the valve stent, when the valve stent is released by the conveyor, the valve stent contacts with a human valve ring and a human valve, circumferentially arranged memory metal rods are fixedly connected to the outside of the valve stent, an extrusion piece is fixedly connected between adjacent memory metal rods, the extrusion piece is located at one end of the adjacent memory metal rod away from the adjacent three-leaf valve, and the extrusion piece cooperates with the human valve ring and the adjacent human valve.

Furthermore, when the extrusion piece is close to the human valve ring, the extrusion piece does not contact the adjacent human valve.

Furthermore, the locking groove is wavy in shape, so as to improve the fixing effect of the ring.

Furthermore, the outer side of the valve stent is fixedly connected with circumferentially arranged and equidistantly distributed extrusion blocks, and the extrusion blocks are used to further fix the valve stent.

Furthermore, the valve support is fixedly connected to the outside with circumferentially arranged arcuate pieces, and the arcuate pieces cooperate with the adjacent extrusion pieces.

Furthermore, the arc-shaped piece is provided with an extrusion groove, and the extrusion groove of the arc-shaped piece is used to enhance the fixing effect of the valve stent.

Furthermore, the arc-shaped piece is fixedly connected with a flexible protrusion, and the flexible protrusion is located on a side of an adjacent arc-shaped piece close to an adjacent extrusion piece, and the flexible protrusion cooperates with the adjacent extrusion piece.

Furthermore, there is a triangular area between adjacent human valves and human valve rings. When the extrusion piece contacts the adjacent flexible protrusion, the flexible protrusion is located in the adjacent triangular area, and the human valve is located between the adjacent extrusion piece and the adjacent arc-shaped piece.

Furthermore, the memory metal rod is provided with symmetrically arranged notches, so as to enable the memory metal rod to bend at adjacent notches.

Furthermore, a groove is provided on a side of the extrusion member facing the adjacent flexible protrusion, and the groove cooperates with the adjacent human valve.

The beneficial effects of the present invention are as follows: the present invention mutually engages with the human valve ring through the engagement groove, and the expansion block expands when encountering blood, thereby enhancing the fixing effect of the ring; at the same time, during interventional treatment, the extrusion piece and the valve stent mutually extrudes the human valve, so that the valve stent is fixed and stable, effectively avoiding the occurrence of synovial membrane in the valve stent, and ensuring the treatment effect on the patient;

By installing and removing the collar, when treating the patient, the corresponding treatment method can be selected according to the patient's own condition, while meeting the needs of surgical and medical interventional surgery, increasing the adaptability of the surgery and improving the scope of application for patients;

By squeezing the extrusion piece and the adjacent flexible protrusions against each other, the flexible protrusions and the adjacent extrusion pieces block the adjacent triangular areas, thereby preventing the valve stent from entering the triangular area and contacting the human valve ring due to severe hardening of the human valve, causing paravalvular leakage in the patient, reducing the treatment effect on the patient, and affecting the patient's health.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic diagram of the three-dimensional structure of the ring and the valve support of the present invention;

FIG3 is a schematic diagram showing the positional relationship of the valve support and the three-leaf valve and other parts of the present invention;

FIG4 is a schematic diagram showing the positional relationship between the valve support and the extrusion block of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the three-leaf valve of the present invention;

FIG6 is a diagram showing the closed state of the trileaflet valve of the present invention and the open state of the human body valve;

FIG7 is a schematic diagram of the three-dimensional structure of parts such as the arc-shaped sheet and the flexible protrusion of the present invention;

FIG8 is a schematic diagram of the three-dimensional structure of the memory metal rod and the extrusion member of the present invention;

FIG. 9 is a schematic diagram of the bending state of the memory metal rod of the present invention.

Markings in the accompanying drawings: 101: valve support, 1011: ring, 1012: positioning groove, 1013: expansion block, 102: trifoliate valve, 103: memory metal rod, 104: extrusion piece, 105: extrusion block, 106: arc-shaped sheet, 107: flexible protrusion, 108: human valve ring, 109: human valve, 110: triangular area, 111: groove, 112: notch.

DETAILED DESCRIPTION

Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Embodiment 1: A suture-free aortic valve for cardiac surgery, as shown in FIGS. 1 to 7, includes a valve stent 101. The overall diameter of the upper portion of the valve stent 101 is greater than the overall diameter of the lower portion thereof. The upper portion of the valve stent 101 and the human valve ring 108 are squeezed against each other, thereby improving the stability of the valve stent 101. The material of the valve stent 101 is memory metal and can be compressed in cold water. When the valve stent 101 is separated from the conveyor and contacts blood, the valve stent 101 expands outward when heated. The upper end of the valve stent 101 is provided with three connectors connected to the conveyor. The valve stent 101 is provided with a plurality of connectors connected to the conveyor. The connector of 1 is T-shaped, and the three connectors are equidistantly distributed around the axis of the valve support 101. A collar 1011 is installed on the outer side of the lower part of the valve support 101, and a depression is arranged on the inner side of the collar 1011, and the inner side of the collar 1011 is deformable, so as to facilitate the valve support 101 and the parts fixed to the outer side thereof to be embedded in the collar 1011. The upper part of the collar 1011 is wavy, and the lower side of the collar 1011 is in the same horizontal plane as the lower end of the valve support 101. A clamping groove 1012 is arranged on the outer side of the collar 1011, and the clamping groove 1012 is arranged in a wavy shape. When the human body valve ring 108 is embedded When the ring 1011 reaches the wavy positioning groove 1012, it is limited in multiple directions, thereby improving the fixing effect of the ring 1011 on the human valve ring 108. The positioning groove 1012 is used to position the human valve ring 108 so that the human valve ring 108 is embedded in the positioning groove 1012, thereby improving the fixing effect of the ring 1011 and making the ring 1011 firmly fixed in the human valve ring 108. The upper part of the outer side of the ring 1011 is fixed with three circumferentially arranged strip expansion blocks 1013. The expansion blocks 1013 gradually expand in the blood, and the expansion blocks 1013 squeeze the human valve ring 108 and embed into The human valve ring 108 is further fixed with the ring 1011 to ensure that the ring 1011 is firmly fixed and the ring 1011 fits tightly with the human valve ring 108 to avoid paravalvular leakage and affect the treatment effect on the patient. A three-leaf valve 102 is installed inside the valve support 101. The three-leaf valve 102 is deformed together with the valve support 101. When the three-leaf valve 102 is unfolded, the three-leaf valve 102 opens and closes continuously under the impact of blood in the heart, acting as a human valve 109. When the valve support 101 is released by the conveyor, the valve support 101 gradually separates from the conveyor from bottom to top, so that The valve support 101 is gradually expanded from bottom to top. When an interventional surgery is performed, the lower part of the valve support 101 contacts three human valves 109, the upper part of the valve support 101 contacts the human valve ring 108, and part of the lower part of the valve support 101 enters between two adjacent human valves 109 and contacts the human valve ring 108. Six circumferentially arranged memory metal rods 103 are fixed to the middle and lower part of the outer side of the valve support 101, and two adjacent memory metal rods 103 form a group. When the memory metal rods 103 are squeezed against the human valve ring 108 through the adjacent extrusion pieces 104, the memory metal rods 103 The extrusion piece 104 is bent so that it can move downward along the human valve ring 108. The memory metal rod 103 is lower than the upper side of the ring 1011, so that the memory metal rod 103 can be embedded in the ring 1011. An arc-shaped extrusion piece 104 is fixed between two adjacent memory metal rods 103. The extrusion piece 104 is located at one end of the adjacent memory metal rod 103 away from the tri-leaf valve 102. The extrusion piece 104 cooperates with the human valve ring 108 and the adjacent human valve 109. The extrusion piece 104 and the valve support 101 face the human valve 109, so that the valve support 101 is firmly fixed. When the extrusion piece 104 is close to the human valve ring 108, the extrusion piece 104 is located at the upper part of the two adjacent human valves 109. The three human valves 109 are squeezed and opened by the valve support 101, so that the gap between the upper parts of the two adjacent human valves 109 is enough for the adjacent extrusion piece 104 to pass through. The extrusion piece 104 does not contact the two adjacent human valves 109. The outer side surfaces of the three extrusion pieces 104 in the circumferential array are arc-shaped, which is used to prevent the extrusion piece 104 from scratching the human valve ring 108 when sliding down along the human valve ring 108 and causing injury to the patient. The middle and lower part of the outer side of the valve support 101 is fixed with circumferentially arranged and equidistantly distributed The extrusion block 105 is U-shaped. The U-shaped extrusion block 105 can not only be embedded in the human valve ring 108 and the adjacent human valve 109, but also can clamp the protrusion on the surface of the human valve 109 in the middle, thereby further improving the stability of the valve stent 101. When the conveyor releases the valve stent 101, the valve stent 101 drives the three circumferentially arranged extrusion pieces 104 to move outward. The extrusion piece 104 is between the human valve ring 108 and the two adjacent human valves 109. The extrusion piece 104 and the valve stent 101 clamp the human valve 109 oppositely, thereby improving the stability of the valve stent 101.

When using this device to perform heart surgery on a patient and replace the patient's aortic valve, the doctor chooses different surgical methods according to the patient's physical condition. When the patient's body cannot withstand the damage caused by opening the chest, the doctor chooses interventional treatment. The doctor soaks the valve stent 101 in cold water and squeezes and deforms the valve stent 101. The doctor connects the connector of the valve stent 101 to the conveyor and separates the valve stent 101 from the ring 1011. Then the doctor installs the valve stent 101 into the conveyor. The doctor enters the patient's puncture port through the conveyor and uses the conveyor to convey the valve stent 101 to the patient's human valve ring 108. After the conveyor passes through the patient's human valve 109, the doctor fine-tunes the position of the conveyor. When the conveyor is in the release position, the doctor controls the release of the conveyor to release the valve stent 101 at the patient's human valve ring 108.

After the valve stent 101 is released from the conveyor, the valve stent 101 gradually unfolds from bottom to top, and the valve stent 101 drives all the extrusion blocks 105 and adjacent extrusion pieces 104 thereon to expand outward through the memory metal rod 103. The lower part of the valve stent 101 unfolds first and squeezes the lower parts of the three human valves 109 of the patient, so that the three human valves 109 of the patient are opened, and the extrusion blocks 105 in contact with the human valves 109 are pressed into the human valves 109 or stuck in the protrusions or depressions of the human valves 109. The remaining extrusion blocks 105 squeeze the human valve ring 108, so that the inner side of the human valve ring 108 is deformed, making the valve stent 101 more stable and avoiding the valve stent 101 from happening. The valve stent 101 drives the three circumferentially arranged extrusion pieces 104 to approach and contact the human valve ring 108 through the memory metal rod 103. At this time, the extrusion piece 104 is located between the human valve ring 108 and the adjacent human valve 109. As the valve stent 101 continues to expand, the valve stent 101 drives the extrusion piece 104 to squeeze the human valve ring 108, causing the memory metal rod 103 to bend. The bent memory metal rod 103 drives the extrusion piece 104 to slide downward along the human valve ring 108. The extrusion piece 104 is close to the lower part of the human valve 109. There is a gap between two adjacent human valves 109, and the gap between the two adjacent human valves 109 gradually decreases from top to bottom.

During the downward movement of the extrusion piece 104, the two ends of the extrusion piece 104 are gradually blocked by the two adjacent human valves 109, and as the extrusion piece 104 moves downward, the area where the extrusion piece 104 is blocked by the two adjacent human valves 109 gradually becomes larger. When the middle part of the valve support 101 expands and contacts the human valve ring 108, the valve support 101 no longer drives the memory metal rod 103 to move, and the memory metal rod 103 no longer bends. The extrusion piece 104 stops moving downward, and the valve support 101 drives the three-leaf valve 102 to expand. The three-leaf valve 102 expands to replace the human valve 109 to work. At this time, the extrusion piece 104 is located at the lower part of the human valve 109. The extrusion piece 104 contacts the human valve ring 108 and two adjacent human valves 109 at the same time. The extrusion piece 104 squeezes the adjacent human valve 109 on one side close to the axis of the valve stent 101. The extrusion piece 104 and the valve stent 101 squeeze the human valve 109 oppositely and fix it. At the same time, due to the unevenness of the human valve 109, the extrusion piece 104 can be stuck in the depression of the human valve 109, thereby increasing the stability of the valve stent 101 and avoiding the occurrence of sliding membrane in the valve stent 101, resulting in failure of installation of the valve stent 101 and causing the valve stent 101 to be unable to be used normally. After the valve stent 101 is installed, the doctor removes the conveyor from the patient's body.

When the doctor determines that the patient can undergo open-chest surgery, the doctor assembles the valve stent 101 and the collar 1011, then soaks the valve stent 101 in cold water and compresses the parts on it. When the compression is completed, the doctor puts the collar 1011 on the outside of the valve stent 101, and then releases the valve stent 101. At this time, the extrusion piece 104 and the memory metal rod 103 are both located in the depression of the collar 1011. Since the inner side of the collar 1011 is deformable, the parts on the outer side of the valve stent 101 squeeze the collar 1011 to deform its inner side. When the valve stent 101 is no longer deformed, the doctor starts the surgery on the patient. The doctor cuts open the patient's aorta and removes the diseased aortic valve of the patient. Then the doctor puts the collar 1011 and the valve stent 101 together. It is implanted into the patient's human valve ring 108 so that the ring 1011 fits with the human valve ring 108. At this time, the locking groove 1012 fits with the human valve ring 108, so that the locking groove 1012 is locked and fixed. When the ring 1011 fits with the human valve ring 108, the expansion block 1013 fits with the human valve ring 108. The expansion block 1013 expands automatically after contacting the human blood, thereby increasing the pressure between the expansion block 1013 and the human valve ring 108, ensuring the fixing effect of the ring 1011. There is no need to suture the ring 1011, thereby avoiding damage to the aorta caused by sutures and knots. When the ring 1011 is completely fixed, the doctor sutures the aorta. At this time, the upper part of the ring 1011 squeezes the aorta, further enhancing the stability of the ring 1011.

Embodiment 2: On the basis of embodiment 1, as shown in Figures 2, 3 and 6-9, three circumferentially arranged arcuate sheets 106 are fixed to the lower part of the outer side of the valve stent 101, and the arcuate sheets 106 cooperate with the adjacent extrusion pieces 104. The arcuate sheets 106 are provided with a plurality of extrusion grooves. When the extrusion pieces 104 and the adjacent arcuate sheets 106 are in the same horizontal plane, the plurality of extrusion grooves cooperate with the adjacent extrusion pieces 104. The extrusion pieces 104 press the human valve 109 into the extrusion grooves of the arcuate sheets 106 to enhance the fixing effect of the valve stent 101. At the same time, the extrusion grooves of the arcuate sheets 106 make it easier to deform. When the valve stent 101 is installed in the conveyor, the arcuate sheets 106 are bent at their extrusion grooves to release the valve stent. The arc-shaped piece 106 is deformed, and a flexible protrusion 107 is fixedly connected to the middle part of the arc-shaped piece 106. When the flexible protrusion 107 is squeezed by two adjacent human valves 109, since the flexible protrusion 107 is in the adjacent triangular area 110, the middle part of the flexible protrusion 107 will not be squeezed by the two adjacent human valves 109, so that the middle part of the flexible protrusion 107 protrudes to fill the adjacent triangular area 110. The flexible protrusion 107 is located on the side of the adjacent arc-shaped piece 106 close to the human valve ring 108. The flexible protrusion 107 cooperates with the adjacent extrusion piece 104. The flexible protrusion 107 and the adjacent extrusion piece 104 squeeze each other to fill the triangular area 110, thereby avoiding paravalvular leakage and affecting the normal flow of heart blood. The adjacent human valve 1 There is a triangular area 110 between the human valve ring 109 and the human valve ring 108, and there are a total of three triangular areas 110 between the human valve ring 108 and the three human valves 109. When the extrusion piece 104 contacts the adjacent flexible protrusion 107, the human valve 109 is located between the adjacent extrusion piece 104 and the adjacent arc-shaped piece 106. The arc-shaped piece 106 and the adjacent extrusion piece 104 sandwich the two adjacent human valves 109 between the two. The extrusion piece 104 is provided with a groove 111 on one side facing the adjacent flexible protrusion 107. The groove 111 cooperates with the adjacent human valve 109. The groove 111 is convenient for clamping the protrusion on the surface of the human valve 109, and the arc-shaped piece 106 squeezes the adjacent human valve 109, so that the human valve Part of 109 is embedded in the adjacent groove 111 to improve the stability of the valve stent 101. Two symmetrically arranged notches 112 are set in the middle of the memory metal rod 103. The memory metal rod 103 is bent at the adjacent notches 112, so that the extrusion piece 104 does not contact the adjacent flexible protrusion 107 when in the conveyor, avoiding the extrusion piece 104 blocking the flexible protrusion 107, so that the outward expansion of the valve stent 101 is restricted by the extrusion piece 104, resulting in the lower part of the valve stent 101 cannot be expanded. When the memory metal rod 103 is detached from the conveyor, the two memory metal rods 103 drive the adjacent extrusion pieces 104 to rotate around the adjacent notches 112, so that the memory metal rod 103 returns to the position shown in Figure 7.

When the patient's human valve 109 is severely calcified and the patient's physical condition cannot bear the burden of open-chest surgery, the doctor uses interventional treatment. The doctor soaks the valve stent 101 and the ring 1011 in cold water. At this time, the memory metal rod 103, the extrusion piece 104, the arc-shaped piece 106 and the flexible protrusion 107 are all located in the depression inside the ring 1011, and the extrusion piece 104 is in contact with the adjacent arc-shaped piece 106 and the adjacent flexible protrusion 107. The doctor squeezes the valve stent 101 to make the valve stent 101 and the ring 1011 The doctor then takes the valve stent 101 out of the ring 1011. Since the patient's human valve 109 is severely calcified and over-hardened, the valve stent 101 cannot squeeze the human valve 109 to fit the inner side of the human valve ring 108, and the valve stent 101 cannot fit the human valve ring 108 in the triangular area 110, resulting in the inability to completely fill the triangular area 110 between two adjacent human valves 109 of the patient, causing paravalvular leakage in the patient, and failing to provide treatment effects for the patient. The specific solutions are as follows:

The doctor rotates the memory metal rod 103 from the notch 112, so that the memory metal rod 103 is in the state shown in Figure 9. The doctor installs the valve stent 101 and the parts thereon into the conveyor. When the lower part of the valve stent 101 is released from the conveyor, the valve stent 101 drives the arc piece 106 and the flexible protrusion 107 to approach and squeeze the human valve 109, so that the arc piece 106 and the flexible protrusion 107 are located at the lower part of the adjacent human valve 109. However, due to the severe hardening of the human valve 109, it is difficult for the human valve 109 to work normally, and there is a gap between the human valve 109 and the human valve ring 108. When the memory metal rod 103 is released from the conveyor, the memory metal rod 103 drives the adjacent extrusion piece 104 to rotate, so that the memory metal rod 103 and the adjacent extrusion piece 104 are in the state shown in Figure 8.

In the process that the memory metal rod 103 drives the adjacent extrusion piece 104 to slide downward along the human valve ring 108, the extrusion piece 104 moves downward along the gap between the human valve ring 108 and the human valve 109, and the extrusion piece 104 gradually approaches the adjacent flexible protrusion 107 and the adjacent arc-shaped piece 106. When the extrusion piece 104 stops moving downward, the extrusion piece 104 and the adjacent flexible protrusion 107 and the adjacent arc-shaped piece 106 are in the same horizontal plane. At this time, the two ends of the extrusion piece 104 are aligned with the adjacent flexible protrusion 107 and the adjacent arc-shaped piece 106. The two ends of the arc-shaped piece 106 squeeze the human valve 109 therebetween, so that the human valve 109 fits tightly against the adjacent arc-shaped piece 106, and the extrusion piece 104 presses the adjacent human valve 109 into the extrusion groove of the adjacent arc-shaped piece 106, and the human valve 109 will also sink into the groove 111 on the adjacent extrusion piece 104, limiting the circumferential and vertical directions of the valve stent 101, avoiding synovial membrane of the valve stent 101, causing paravalvular leakage, and affecting the treatment effect on the patient.

When the extrusion piece 104 and the adjacent flexible protrusion 107 are in the same horizontal plane, the middle part of the extrusion piece 104 is located at the triangular area 110 between two adjacent human valves 109, and the extrusion piece 104 contacts the adjacent flexible protrusion 107, so that the extrusion piece 104 and the adjacent flexible protrusion 107 block the adjacent triangular area 110, and when the human valve 109 is too hard, the flexible protrusion 107 squeezes the two adjacent human valves 109, so that the two sides of the flexible protrusion 107 are squeezed, and the flexible protrusion 107 is pressed. The middle part of block 107 protrudes outward, and the more severe the hardening of the human valve 109 is, the greater the extrusion force on the flexible protrusion 107 is, the greater the deformation of the middle part of the flexible protrusion 107 is, the larger the proportion of the flexible protrusion 107 in the triangular area 110 is, and the closer the flexible protrusion 107 is to the human valve ring 108, the tighter the flexible protrusion 107 fits with the adjacent extrusion piece 104, so that the triangular area 110 is completely blocked to avoid paravalvular leakage, resulting in the inability to effectively treat the patient and affecting the patient's health.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A suture-free aortic valve for cardiac surgery, characterized by comprising a valve support (101), wherein the upper end of the valve support (101) is provided with a connector connected with a conveyor, the outer side of the valve support (101) is provided with a collar (1011), the inner side of the collar (1011) is provided with a dent, the outer side of the collar (1011) is provided with a clamping groove (1012), the outer side of the collar (1011) is fixedly connected with a circumferentially arranged expansion block (1013), the inner part of the valve support (101) is provided with a tri-leaflet valve (102), when the valve support (101) is released by the conveyor, the valve support (101) is contacted with a human valve annulus (108) and a human valve (109), the outer side of the valve support (101) is fixedly connected with a circumferentially arranged memory metal rod (103), an extrusion piece (104) is fixedly connected between the adjacent memory metal rods (103), the extrusion piece (104) is positioned at one end of the adjacent memory metal rod (103) far away from the adjacent tri-leaflet valve (102), and the extrusion piece (104) is matched with the human valve annulus (108) and the human valve (109);

the clamping grooves (1012) are wavy and are used for improving the fixing effect on the lantern ring (1011);

An arc-shaped sheet (106) which is arranged circumferentially is fixedly connected outside the valve bracket (101), and the arc-shaped sheet (106) is matched with the adjacent extrusion piece (104);

the arc-shaped sheets (106) are fixedly connected with flexible convex blocks (107), the flexible convex blocks (107) are positioned on one side, close to the adjacent extrusion pieces (104), of the adjacent arc-shaped sheets (106), and the flexible convex blocks (107) are matched with the adjacent extrusion pieces (104);

A triangular region (110) exists between the adjacent human valve (109) and the human valve annulus (108), the flexible tab (107) is located within the adjacent triangular region (110) when the extrusion (104) is in contact with the adjacent flexible tab (107), the human valve (109) is located between the adjacent extrusion (104) and the adjacent arcuate tab (106);

The memory metal rods (103) are provided with symmetrically arranged notches (112) for bending the memory metal rods (103) at adjacent notches (112).

2. The sutures-free aortic valve for cardiac surgery of claim 1 wherein the extrusion (104) is out of contact with the adjacent human valve (109) when the extrusion (104) is adjacent to the human valve annulus (108).

3. The sewing-free aortic valve for cardiac surgery according to claim 1, wherein the outer side of the valve holder (101) is fixedly connected with circumferentially arranged and equally distributed extrusion blocks (105), and the extrusion blocks (105) are used for further fixing the valve holder (101).

4. Suture-free aortic valve for cardiac surgery according to claim 1, characterized in that the arcuate sheet (106) is provided with a crush slot, the crush slot of the arcuate sheet (106) being used to enhance the fixation effect on the valve holder (101).

5. A suture-free aortic valve for cardiac surgery according to claim 1, wherein the side of the extrusion (104) facing the adjacent flexible bump (107) is provided with a groove (111), the groove (111) cooperating with the adjacent human valve (109).