Valve compression device and valve loading system

Abstract

The present invention provides a valve compression device and a valve loading system. The valve compression device switches a plurality of pressing blocks between a first state and a second state by the reverse rotation of a first rotating wheel and a second rotating wheel, and the diameter of the accommodating cavity enclosed by the pressing blocks increases or decreases with the rotation. When the diameter of the accommodating cavity is relatively large, a valve frame loaded with an artificial valve can be placed, and then the rotation direction of the first rotating wheel and the second rotating wheel is changed to gradually reduce the diameter of the accommodating cavity, thereby applying radial pressure to the valve frame loaded with the artificial valve to compress the artificial valve. During the entire compression process, the accommodating cavity can directly apply radial pressure to the valve frame loaded with the artificial valve, without dragging and moving the valve frame, thereby avoiding the breakage of the valve frame, and also without causing wear on the sutures of the valve frame, thereby reducing damage to the artificial valve.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a valve compression device and a valve loading system. Background Art

[0002] Transcatheter valve intervention usually involves suturing the pericardial tissue to the valve frame with sutures. Before performing the interventional valve surgery, a specific catheter is used to load and transport the valve to the targeted position for release and deployment of the valve. During the loading and transport process, damage to the artificial valve needs to be minimized as much as possible.

[0003] In the prior art, during loading, the valve frame loaded with the artificial valve is connected through a connecting structure such as a claw, and the artificial valve is dragged into a compression lumen with a tapered inner diameter, so that the artificial valve enters from the large port of the compression lumen and exits from the small port. During the dragging of the artificial valve, the diameter of the tube is continuously reduced to achieve compression of the size of the artificial valve, making it easier for the artificial valve introduction catheter to be loaded onto the delivery system. Since the valve frame itself has a strong radial support force, the resistance is relatively large during the dragging of the valve, which will cause damage or even breakage to the artificial valve, especially the sutures.

[0004] It can be seen that the existing valve compression devices have the problem of causing great damage to artificial valves. Summary of the invention

[0005] The embodiments of the present invention provide a valve compression device and a valve loading system to solve the problem that existing valve compression solutions cause significant damage to artificial valves.

[0006] In order to solve the above technical problems, the embodiments of the present invention adopt the following technical solutions:

[0007] An embodiment of the present invention provides a valve compression device, the valve compression device comprising:

[0008] A transmission mechanism, the transmission mechanism comprising a first rotating wheel and a second rotating wheel, the first rotating wheel being embedded in the second rotating wheel and being coaxially arranged with the second rotating wheel;

[0009] A compression mechanism, the compression mechanism comprising a plurality of compression blocks, the plurality of compression blocks being arranged at intervals along the circumference of the second rotating wheel, each compression block comprising a first connection mechanism close to the center of the circle and a second connection mechanism far from the center of the circle, the first connection mechanism being connected to the first rotating wheel, and the second connection mechanism being connected to the second rotating wheel;

[0010] The second rotating wheel rotates in the opposite direction to the first rotating wheel to drive the plurality of pressing blocks to change between a first state and a second state, and a diameter of a housing cavity enclosed by the plurality of pressing blocks when in the first state is larger than a diameter of a housing cavity enclosed by the plurality of pressing blocks when in the second state.

[0011] Optionally, a plurality of first columns are arranged at intervals on the first rotating wheel, a plurality of second columns are arranged at intervals on the second rotating wheel, the first connecting mechanism is a first through hole arranged on the pressing block, and the second connecting mechanism is a second through hole arranged on the pressing block; the plurality of first columns are inserted into the first through holes one by one, and the plurality of second columns are inserted into the second through holes one by one.

[0012] Furthermore, the valve compression device also includes a first screw and a second screw, the first screw is embedded in the first through hole and connected to the first column, and the second screw is embedded in the second through hole and connected to the second column.

[0013] Optionally, each of the pressing blocks includes a first surface and a second surface adjacent to each other, the first surface of the first pressing block contacts the second surface of the second pressing block, and when the plurality of pressing blocks are transformed between the first state and the second state, the first surface slides on the second surface;

[0014] The first pressing block and the second pressing block are any two adjacent pressing blocks among the plurality of pressing blocks.

[0015] Furthermore, the first surface is a smooth surface, and the second surface is a frosted surface.

[0016] Optionally, the compression mechanism further includes a spring ring, and the spring ring is sleeved on the plurality of compression blocks.

[0017] Optionally, the transmission mechanism is connected to a motor, and the motor drives the first rotating wheel and the second rotating wheel to rotate in opposite directions.

[0018] An embodiment of the present invention further provides a valve loading system, which includes the valve compression device provided by the embodiment of the present invention.

[0019] Optionally, the valve loading system further comprises a pushing rod, and when the accommodating cavity accommodates the valve, the pushing rod is used to push the valve into the delivery catheter.

[0020] Furthermore, the valve loading system also includes a handle, the handle is provided with a groove, and the delivery catheter is clamped in the groove.

[0021] Further, the delivery catheter comprises a first connection portion close to the accommodating cavity and a second connection portion away from the accommodating cavity, and the diameter of the first connection portion is larger than that of the second connection portion;

[0022] The groove comprises a first groove and a second groove which are connected to each other. The first connecting portion is clamped in the first groove, and the second connecting portion is clamped in the second groove.

[0023] Furthermore, the valve loading system also includes an adapter, which is connected to one end of the delivery catheter and embedded in the accommodating cavity, and the interior of the adapter is conical.

[0024] The valve compression device and valve loading system provided by the embodiment of the present invention, the valve compression device switches a plurality of pressing blocks between the first state and the second state by the reverse rotation of the first wheel and the second wheel, and the diameter of the accommodating cavity enclosed by the pressing blocks increases or decreases with the rotation. When the diameter of the accommodating cavity is relatively large, a valve frame loaded with an artificial valve can be placed, and then the rotation direction of the first wheel and the second wheel is changed to gradually reduce the diameter of the accommodating cavity, thereby applying radial pressure to the valve frame loaded with the artificial valve to compress the artificial valve. During the entire compression process, the accommodating cavity can directly apply radial pressure to the valve frame loaded with the artificial valve, without dragging and moving the valve frame, thereby avoiding the breakage of the valve frame, and also without causing wear on the sutures of the valve frame, thereby reducing damage to the artificial valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0026] Figure 1 is an exploded view of a valve compression device provided by an embodiment of the present invention;

[0027] Figure 2 is a front view of a valve compression device provided by an embodiment of the present invention;

[0028] Figure 3 is a stereoscopic diagram of a valve compression device provided by an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a compression block in a valve compression device provided by an embodiment of the present invention;

[0030] Figure 5 is a plan view of several compression blocks in a valve compression device provided by an embodiment of the present invention;

[0031] Figure 6 is a structural schematic diagram of a valve loading system provided by an embodiment of the present invention;

[0032] Figure 7 is a cross-sectional view of a push rod in a valve loading system provided by an embodiment of the present invention;

[0033] Figure 8 is a cross-sectional view of a delivery catheter in a valve loading system provided by an embodiment of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of a handle in a valve loading system provided by an embodiment of the present invention;

[0035] Fig.10 is a cross-sectional view of a handle in a valve loading system provided by an embodiment of the present invention;

[0036] Fig.11 It is a cross-sectional view of an adapter assembly in a valve loading system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The embodiment of the present invention provides a valve compression device 100, see Figures 1 to 5 shown.

[0039] The valve compression device 100 comprises:

[0040] The transmission mechanism 110 includes a first rotating wheel 111 and a second rotating wheel 112. The first rotating wheel 111 is embedded in the second rotating wheel 112 and is coaxially arranged with the second rotating wheel 112.

[0041] A compression mechanism 120, the compression mechanism 120 includes a plurality of compression blocks 121, the plurality of compression blocks 121 are arranged at intervals along the circumference of the first rotating wheel 111, each compression block 121 includes a first connection mechanism close to the center of the circle and a second connection mechanism far from the center of the circle, the first connection mechanism is connected to the first rotating wheel 111, and the second connection mechanism is connected to the second rotating wheel 112;

[0042] The second rotating wheel 121 rotates in the opposite direction to the first rotating wheel 111 to drive the plurality of pressing blocks 121 to change between the first state and the second state. The diameter of the accommodating cavity 130 enclosed by the plurality of pressing blocks 121 when in the first state is larger than the diameter of the accommodating cavity 130 enclosed by the plurality of pressing blocks 121 when in the second state.

[0043] Among them, the first connecting mechanism and the second connecting mechanism can be threaded connecting mechanisms, and the two ends of each pressure block 121 can be respectively connected to the first rotating wheel 111 and the second rotating wheel 112 by screws and other fixing parts; the first connecting mechanism and the second connecting mechanism can also be snap-fit ​​connecting mechanisms, and the two ends of each pressure block 121 can be respectively connected to the first rotating wheel 111 and the second rotating wheel 112 by the cooperation of the snap and the slot. The specific settings can be made according to actual needs and are not limited here.

[0044] It should be noted that if Figure 1 As shown, the number of the pressing blocks 121 in the embodiment of the present invention is 7. In actual applications, the number can be specifically set according to needs, and can be 6 to 12, which is not limited here.

[0045] In the embodiment of the present invention, the transmission mechanism 110 includes a first rotating wheel 111 and a second rotating wheel 112 which are coaxially arranged. A plurality of pressing blocks 121 are arranged at intervals along the circumference of the second rotating wheel 112. One end of the pressing blocks 121 which is close to the center of the circle can enclose a receiving cavity 130. Figure 2 As shown. Since the end of each pressing block 121 close to the center of the circle is connected to the first rotating wheel 111 through the first connecting mechanism, and the end away from the center of the circle is connected to the second rotating wheel 112 through the second connecting mechanism, when the first rotating wheel 111 and the second rotating wheel 112 rotate in opposite directions, the two ends of the pressing blocks 121 will rotate in opposite directions, and the relative positions of the pressing blocks 121 will change, switching between the first state and the second state. The diameter of the accommodating cavity 130 enclosed by the pressing blocks 121 in the first state is greater than the diameter of the accommodating cavity 130 enclosed by the pressing blocks 121 in the second state, that is, the diameter of the accommodating cavity 130 will gradually increase or decrease.

[0046] In actual application, the first wheel 111 and the second wheel 112 are controlled to rotate in opposite directions, so that the diameter of the accommodating chamber 130 gradually increases to a size that can accommodate a valve rack loaded with an artificial valve, and the valve rack can be placed therein. Thereafter, the rotation directions of the first wheel 111 and the second wheel 112 are changed respectively, so that the diameter of the accommodating chamber 130 gradually decreases. During this process, the accommodating chamber 130 will apply radial pressure to the valve rack to compress the artificial valve until the artificial valve is compressed to a size suitable for loading.

[0047] The valve compression device 100 provided in the embodiment of the present invention switches a plurality of pressing blocks 121 between the first state and the second state by the reverse rotation of the first rotating wheel 111 and the second rotating wheel 112, and the diameter of the accommodating cavity 130 enclosed by the pressing blocks 121 increases or decreases with the rotation. When the diameter of the accommodating cavity 130 is relatively large, a valve frame loaded with an artificial valve can be placed therein, and then the rotation direction of the first rotating wheel 111 and the second rotating wheel 112 is changed to gradually reduce the diameter of the accommodating cavity 130, thereby applying radial pressure to the valve frame loaded with the artificial valve to compress the artificial valve. During the entire compression process, the accommodating cavity 130 can directly apply radial pressure to the valve frame loaded with the artificial valve, without dragging and moving the valve frame, thereby avoiding the breakage of the valve frame, and also without causing wear on the sutures of the valve frame, thereby reducing damage to the artificial valve.

[0048] Optionally, a plurality of first columns 113 are arranged at intervals on the first rotating wheel 111, and a plurality of second columns 114 are arranged at intervals on the second rotating wheel 112; the first connecting mechanism is a first through hole 122 arranged on the pressing block 121, and the second connecting mechanism is a second through hole 123 arranged on the pressing block 121; the plurality of first columns 113 are inserted into the first through holes 122 one by one, and the plurality of second columns 114 are inserted into the second through holes 123 one by one.

[0049] In this embodiment, the first connecting mechanism is a first through hole 122 provided on the pressing block 121, and the second connecting mechanism is a second through hole 123 provided on the pressing block 121. The first columns 113 can be inserted into the first through holes 122 one by one, and the second columns 114 can be inserted into the second through holes 123 one by one, so that both ends of the plurality of pressing blocks 121 are respectively fixedly connected to the first rotating wheel 111 and the second rotating wheel 112, and can also rotate around the first column 113 and the second column 114 respectively. Based on this, the first rotating wheel 111 and the second rotating wheel 112 can drive the plurality of pressing blocks 121 to switch between the first state and the second state.

[0050] Furthermore, the valve compression device 100 also includes a first screw 124 and a second screw 125 . The first screw 124 is embedded in the first through hole 122 and connected to the first column 113 , and the second screw 125 is embedded in the second through hole 123 and connected to the second column 114 .

[0051] In this embodiment, the first screw 124 can be embedded in the first through hole 122 and connected to the first column 113, limiting the first column 113 so that it will not move relative to the first through hole 122. The second screw 125 can be embedded in the second through hole 123 and connected to the second column 114, limiting the second column 114 so that it will not move relative to the second through hole 123, ensuring that the pressure block 121 maintains a tight fit during the rotation of the first rotating wheel 111 and the second rotating wheel 112, thereby preventing the accommodating cavity 130 from being deformed, and only reducing or increasing the diameter in proportion. During the compression process, the artificial valve is subjected to more uniform force.

[0052] Optional, such as Figure 4 As shown, each pressing block 121 includes an adjacent first surface 1211 and a second surface 1212, the first surface 1211 of the first pressing block is in contact with the second surface 1212 of the second pressing block, and when a plurality of pressing blocks 121 are transformed between the first state and the second state, the first surface 1211 slides on the second surface 1212; wherein the first pressing block and the second pressing block are any two adjacent pressing blocks among the plurality of pressing blocks 121.

[0053] In this embodiment, the first surface 1211 is formed at one end of the plurality of pressing blocks 121 close to the center of the circle. The first surface 1211 is inclined and the angle between the first surface 1211 and the second surface 1212 is acute. The first surface 1211 of each pressing block contacts the second surface 1212 of the adjacent pressing block, so that the accommodating cavity 130 is a regular polygon (such as Figure 5 As shown). The shorter the side length of the regular polygon is, the more the number of the plurality of pressing blocks 121 is, and the accommodating cavity 130 can be close to a circle. When the plurality of pressing blocks 121 are transformed between the first state and the second state, the first surface 1211 can slide on the second surface 1212, that is, the first surface 1211 and the second surface 1212 always maintain a contact state, so that there is no gap in the accommodating cavity 130, and the artificial valve will not be pulled or scratched during the compression process, further reducing the damage to the artificial valve.

[0054] It should be noted that, due to the space limitation of the first rotating wheel 111 and the second rotating wheel 112 , as described in the above embodiment, the number of the plurality of pressing blocks 121 can be selected to be 6 to 12.

[0055] Furthermore, the first surface 1211 is a smooth surface, and the second surface 1212 is a frosted surface.

[0056] In this embodiment, the smooth first surface 1211 and the frosted second surface 1212 can make the friction between the two appropriate, so as to avoid that the friction is too small, the resistance is too small during the rotation of the first wheel 111 and the second wheel 112, resulting in excessive compression and damage to the artificial valve, or avoid that the friction is too large, the resistance is large during the rotation of the first wheel 111 and the second wheel 112, and the compression process is not flexible, which also damages the artificial valve.

[0057] Optionally, the compression mechanism 120 further includes a spring ring 126 , and the spring ring 126 is sleeved on the plurality of compression blocks 121 .

[0058] In this embodiment, a spring ring 126 is sleeved on the plurality of pressing blocks 121. During the reverse rotation of the first rotating wheel 111 and the second rotating wheel 112, the plurality of pressing blocks 121 are limited by the elastic potential energy of the spring ring 126, so that the plurality of pressing blocks 121 are kept in a state of close fit with each other by the elastic force and always move closer to the center of the circle, and will not separate and cause a gap in the accommodating cavity 130. A plurality of pressing blocks 121 may be provided with a slot 1213, such as Figure 4 As shown, the spring ring 126 can be clamped on the clamping groove 1213, and during the rotation process, it can be ensured that the spring ring 126 does not move.

[0059] Optionally, the transmission mechanism 110 is connected to a motor, and the motor drives the first rotating wheel 111 and the second rotating wheel 112 to rotate in opposite directions.

[0060] In this embodiment, the transmission mechanism 110 can be connected to a motor, and the motor can drive the first rotating wheel 111 and the second rotating wheel 112 to rotate in opposite directions. Furthermore, the transmission mechanism 110 can be connected to a servo motor. It should be noted that the transmission mechanism 110 can also realize the reverse rotation of the first rotating wheel 111 and the second rotating wheel 112 through manual control, and no limitation is made here.

[0061] In summary, the valve compression device 100 provided in the embodiment of the present invention switches a plurality of pressing blocks 121 between the first state and the second state through the reverse rotation of the first rotating wheel 111 and the second rotating wheel 112, and the diameter of the accommodating cavity 130 enclosed by the pressing blocks 121 increases or decreases with the rotation. When the diameter of the accommodating cavity 130 is relatively large, a valve frame loaded with an artificial valve can be placed therein, and then the rotation direction of the first rotating wheel 111 and the second rotating wheel 112 is changed to gradually reduce the diameter of the accommodating cavity 130, thereby applying radial pressure to the valve frame loaded with the artificial valve to compress the artificial valve. During the entire compression process, the accommodating cavity 130 can directly apply radial pressure to the valve frame loaded with the artificial valve, without dragging and moving the valve frame, thereby avoiding the breakage of the valve frame, and also without causing wear on the sutures of the valve frame, thereby reducing damage to the artificial valve.

[0062] The present invention also provides a valve loading system, such as Figure 6 shown.

[0063] The valve loading system includes a valve compression device 100 provided in an embodiment of the present invention.

[0064] In the embodiment of the present invention, radial pressure can be directly applied to the valve frame loaded with the artificial valve through the valve compression device 100, without dragging the valve frame, thus avoiding the breakage of the valve frame and causing no wear on the sutures of the valve frame, thereby reducing damage to the artificial valve.

[0065] Optionally, the valve loading system further includes a delivery catheter 200 , which is embedded in the accommodating cavity 130 .

[0066] In this embodiment, the delivery catheter 200 is embedded in the accommodating cavity 130. When the valve compression device 100 compresses the artificial valve to a size suitable for loading, the valve compression device 100 can be loaded from the accommodating cavity 130 into the delivery catheter 200. The artificial valve is delivered to the target position through the delivery catheter 200 for release and deployment of the valve. It can be understood that the final compressed diameter of the artificial valve is smaller than the inner diameter of the delivery catheter 200.

[0067] Furthermore, the valve loading system further includes a pushing rod 300 . When the accommodating cavity 130 accommodates the valve, the pushing rod 300 is used to push the valve into the delivery catheter 200 .

[0068] In this embodiment, after the valve compression device 100 compresses the artificial valve to a size suitable for loading, the push rod 300 can be used to push the artificial valve into the delivery catheter 200 along the axial direction, which is convenient for personnel to operate. Figure 7 As shown, the push rod 300 may include a first rod portion 310 with a larger diameter and a second rod portion 320 with a smaller diameter. The outer diameter of the second rod portion 320 is smaller than the diameter of the accommodating cavity 130 after final compression, and is smaller than the inner diameter of the delivery catheter 200, so that it is convenient to extend into the accommodating cavity 130 and the delivery catheter 200 to complete the delivery of the artificial valve. The first rod portion 310 has a larger diameter, which is convenient for the operator to hold.

[0069] Optionally, the valve loading system further includes a handle 400 , on which a groove 410 is formed, and the delivery catheter 200 is clamped in the groove 410 .

[0070] In this embodiment, in order to facilitate the operation of personnel, a handle 400 can be provided on the delivery catheter 200 for the operator to hold. During the operation, the operator holds the handle 400 to keep the delivery catheter 200 fixed, ensuring that the delivery catheter 200 is coaxial with the accommodating cavity 130, and then uses the pushing rod 300 to push the artificial valve into the delivery catheter 200, avoiding radial movement of the artificial valve during the process of being pushed into the delivery catheter 200, causing unnecessary damage.

[0071] Further, such as Figure 6 and Figure 8As shown, the delivery catheter 200 includes a first connection portion 210 close to the accommodating cavity 130 and a second connection portion 220 away from the accommodating cavity 130, and the diameter of the first connection portion 210 is larger than that of the second connection portion 220;

[0072] like Fig. 9 and Fig.10 As shown, the groove 410 includes a first groove 411 and a second groove 412 that are connected to each other. The first connecting portion 210 is clamped in the first groove 411 , and the second connecting portion 220 is clamped in the second groove 412 .

[0073] In this embodiment, the diameter of the first connecting portion 210 of the delivery catheter 200 close to the accommodating cavity 130 is greater than the diameter of the second connecting portion 220. When the artificial valve is delivered in the delivery catheter 200, the second connecting portion 220 can further compress the artificial valve. Figure 7 As shown, a tapered connection portion can be used for smooth transition between the two to reduce the resistance of the artificial valve when passing through the tapered connection portion, thereby reducing damage to the artificial valve. Figure 8 and Fig. 9 As shown, the groove 410 on the handle 400 also includes a first groove 411 and a second groove 412 that are connected to each other, so that the delivery catheter 200 can be stuck in the groove 410 without radial deflection, thereby preventing the artificial valve from moving radially when being pushed into the delivery catheter 200, thereby preventing unnecessary damage.

[0074] Optional, such as Figure 8 As shown, the valve loading system further includes an adapter 500 , which is connected to one end of the delivery catheter 200 , and the adapter 500 is embedded in the accommodating cavity 130 , and the interior of the adapter 500 is conical.

[0075] In this embodiment, a straight-tube adapter 500 is used to connect the accommodating cavity 130 and one end of the delivery catheter 200, and the interior of the adapter 500 is tapered, such as Fig.11 As shown, the tapered slope design facilitates the smooth loading of the artificial valve from the accommodating cavity 130 into the delivery catheter 200 .

[0076] Combination Figures 1 to 11 The following is a detailed description of the process of compressing and loading an artificial valve in an embodiment of the present invention:

[0077] In this embodiment, the number of the plurality of pressing blocks 121 is 7, and the number of the corresponding first pillars 113 and second pillars 114 is also 7. The accommodating cavity 130 formed by the plurality of pressing blocks 121 is a regular heptagon.

[0078] First, when the first rotating wheel 111 rotates counterclockwise and the second rotating wheel 112 rotates clockwise, the ends of the plurality of pressing blocks 121 close to the center of the circle will rotate counterclockwise with the first rotating wheel 111, while the ends of the plurality of pressing blocks 121 away from the center of the circle will rotate clockwise with the second rotating wheel 112, and the plurality of pressing blocks 121 will gradually change from the second state to the first state, and the diameter of the accommodating cavity 130 will increase. At this time, the valve rack loaded with the artificial valve can be placed.

[0079] Afterwards, when the first rotating wheel 111 rotates clockwise and the second rotating wheel 112 rotates counterclockwise, the ends of the plurality of pressing blocks 121 close to the center of the circle will rotate clockwise with the first rotating wheel 111, while the ends of the plurality of pressing blocks 121 away from the center of the circle will rotate counterclockwise with the second rotating wheel 112. The plurality of pressing blocks 121 will gradually change from the first state to the second state, and the diameter of the accommodating cavity 130 will decrease. During this process, the accommodating cavity 130 compresses the artificial valve loaded in the valve rack, and the compression can be stopped when the artificial valve is compressed to a size suitable for loading.

[0080] In this embodiment, when the artificial valve is compressed to half its original size, the head end of the second rod portion 320 of the push rod 300 can be embedded in the accommodating cavity 130 to limit the minimum diameter of the accommodating cavity 130 and prevent the artificial valve from being over-compressed.

[0081] After the artificial valve is compressed to a size suitable for loading, the handle 400 can be installed, and the delivery catheter 200 can be embedded in the groove 410 of the handle 400 to facilitate the operator to hold and complete the subsequent delivery of the artificial valve, while ensuring that the delivery catheter 200 and the accommodating cavity 130 remain coaxial and do not deflect radially. Then, the artificial valve is pushed axially into the delivery catheter 200 using the push rod 300. During the pushing process, the coaxiality of the push rod 300, the accommodating cavity 130 and the delivery catheter 200 must be maintained. After the artificial valve is pushed into the delivery catheter 200, the push rod 300 is withdrawn and the handle 400 is removed. The compression and loading process of the artificial valve is completed.

[0082] To summarize, the valve loading system provided by the embodiment of the present invention includes the valve compression device 100 provided by the embodiment of the present invention. The valve compression device 100 can directly apply radial pressure to the valve frame loaded with an artificial valve, without the need to drag and move the valve frame, thereby avoiding breakage of the valve frame and causing no wear on the sutures of the valve frame, thereby reducing damage to the artificial valve.

[0083] It should be noted that the various optional implementation modes introduced in the embodiments of the present invention may be implemented in combination with each other or may be implemented separately, and the embodiments of the present invention are not limited to this.

[0084] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0085] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] The above embodiments are described with reference to the accompanying drawings, and other different forms and embodiments are also feasible without departing from the principles of the present invention. Therefore, the present invention should not be constructed as a limitation of the embodiments proposed herein. More specifically, these embodiments are provided so that the present invention will be perfect and complete, and the scope of the present invention will be conveyed to those skilled in the art. In the accompanying drawings, the component sizes and relative sizes may be exaggerated for clarity. The terms used herein are only based on the purpose of describing specific embodiments and are not intended to be limiting. The terms "comprising" and / or "including" when used in this specification indicate the presence of the features, integers, components and / or components, but do not exclude the presence or increase of one or more other features, integers, components, components and / or their groups. Unless otherwise indicated, when stated, a value range includes the upper and lower limits of the range and any sub-ranges therebetween.

[0087] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A valve compression device, characterized in that: The valve compression device comprises: A transmission mechanism, the transmission mechanism comprising a first rotating wheel and a second rotating wheel, the first rotating wheel being embedded in the second rotating wheel and being coaxially arranged with the second rotating wheel; A compression mechanism, the compression mechanism comprising a plurality of compression blocks, the plurality of compression blocks being arranged at intervals along the circumference of the second rotating wheel, each compression block comprising a first connection mechanism close to the center of the circle and a second connection mechanism far from the center of the circle, the first connection mechanism being connected to the first rotating wheel, and the second connection mechanism being connected to the second rotating wheel; Each of the pressing blocks comprises a first surface and a second surface that are adjacent to each other, the first surface of the first pressing block contacts the second surface of the second pressing block, and when the plurality of pressing blocks are transformed between the first state and the second state, the first surface slides on the second surface, and the first pressing block and the second pressing block are any two adjacent pressing blocks among the plurality of pressing blocks; The first surface is a smooth surface, and the second surface is a frosted surface; The compression mechanism further includes a spring ring, and a plurality of compression blocks are provided with a slot, and the spring ring is clamped in the slot; Wherein, the second rotating wheel rotates in the opposite direction to the first rotating wheel to drive the plurality of pressing blocks to transform between the first state and the second state, and the diameter of the accommodating cavity enclosed by the plurality of pressing blocks when in the first state is larger than the diameter of the accommodating cavity enclosed by the plurality of pressing blocks when in the second state.

2. The valve compression device according to claim 1, characterized in that: A plurality of first columns are arranged at intervals on the first rotating wheel, a plurality of second columns are arranged at intervals on the second rotating wheel, the first connecting mechanism is a first through hole arranged on the pressing block, and the second connecting mechanism is a second through hole arranged on the pressing block; the plurality of first columns are inserted into the first through holes one by one, and the plurality of second columns are inserted into the second through holes one by one.

3. The valve compression device according to claim 2, characterized in that: The valve compression device further includes a first screw and a second screw, wherein the first screw is embedded in the first through hole and connected to the first column, and the second screw is embedded in the second through hole and connected to the second column.

4. The valve compression device according to claim 1, characterized in that: The transmission mechanism is connected to a motor, and the motor drives the first rotating wheel and the second rotating wheel to rotate in opposite directions.

5. A valve loading system, characterized in that: Comprising the valve compression device according to any one of claims 1 to 4.

6. The valve loading system according to claim 5, characterized in that: The valve loading system further comprises a delivery catheter, which is embedded in the accommodating cavity.

7. The valve loading system according to claim 6, characterized in that: The valve loading system further comprises a pushing rod, and when the accommodating cavity accommodates the valve, the pushing rod is used to push the valve into the delivery catheter.

8. The valve loading system according to claim 6, characterized in that: The valve loading system also includes a handle, a groove is provided on the handle, and the delivery catheter is clamped in the groove.

9. The valve loading system according to claim 8, characterized in that: The delivery catheter comprises a first connection portion close to the accommodating cavity and a second connection portion far from the accommodating cavity, wherein the diameter of the first connection portion is larger than that of the second connection portion; The groove comprises a first groove and a second groove which are connected to each other. The first connecting portion is clamped in the first groove, and the second connecting portion is clamped in the second groove.

10. The valve loading system according to claim 6, characterized in that: The valve loading system also includes an adapter, which is connected to one end of the delivery catheter and is embedded in the accommodating cavity. The interior of the adapter is conical.

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