Valve delivery system

Abstract

The application relates to a valve delivery system, which comprises a valve and a delivery device, wherein the valve is provided with a fixing part, the fixing part is provided with a fixing hole, the delivery device comprises a pin wire assembly and a withdrawing assembly, the pin wire assembly comprises a pin wire, the withdrawing assembly comprises a fixing claw, the fixing claw is provided with a limiting hole, the pin wire assembly can pass through the fixing hole when the fixing part passes through the limiting hole, the fixing part is limited to be separated from the limiting hole, the valve is in a connected state, the fixing part is separated from the limiting hole under the elastic force of the valve when the pin wire is separated from the fixing hole, the valve is in an unhooked state, the valve is controlled through the fixing claw and the pin wire, the controllable delayed release of the valve can be realized, and the risk that the valve is displaced and the human body is damaged due to the too-fast deformation of the valve during release is reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a valve delivery system. Background Technology

[0002] Artificial valves are used in fields such as heart valve disease. They are medical devices that are implanted in the heart to replace the heart valves and enable unidirectional blood flow. Self-expanding valves can curl and shrink at low temperatures and can automatically expand after entering the body. The valve is delivered to the appropriate position in the body through a delivery device and then released. However, the valve itself has a certain degree of elasticity. At the moment when the delivery device and the valve are separated, the valve is prone to popping out and undergoing large deformation, which may lead to displacement of the entire valve or even damage to the human physiological structure. Summary of the Invention

[0003] This application provides a valve delivery system to address the problems of valve displacement and damage to the human body during valve release.

[0004] This application provides a valve delivery system, the valve delivery system including a valve having a fixing portion and a delivery device, the delivery device including:

[0005] A plug assembly, the plug assembly including a plug extending axially along the conveying device;

[0006] A retraction assembly, the retraction assembly including a fixing claw, the fixing claw being provided with a limit hole, the fixing part being able to pass through the limit hole;

[0007] The fixing claw is elastic. When the fixing part passes through the limiting hole and the ferrule passes through the fixing hole of the fixing part, the valve can partially expand under its own elastic force, and the fixing part cannot detach from the limiting hole, and the valve is in a connected state.

[0008] When the thimble detaches from the fixing hole, the fixing part can detach from the limiting hole, and the valve is in a disengaged state.

[0009] The valve delivery system provided in this application is used to place a valve in a patient's body. The valve can be a self-expanding valve. After being delivered to a preset position, the self-expanding valve can automatically expand to provide support after the fixation is released. The valve has a fixing part for fixing and storing the valve in the delivery device. Specifically, the fixing part is provided with a fixing hole. The delivery device is used to deliver the valve into the human body. At least a portion of the fixing part of the valve can pass through the limiting hole. At this time, the embolus can pass through the fixing hole of the valve, so that the fixing part cannot detach from the limiting hole, and the valve is in a connected state. When the delivery device delivers the valve to the preset position in the body, the valve is released. The valve gradually opens under its own deformation elastic force until the fixing claws are fully opened. At this time, the embolus assembly can be pulled to disengage the embolus from the limiting hole. The fixing part of the valve can detach from the limiting hole under its own elastic force, thereby expanding and opening, and the valve is in a disengaged state. The retaining claw and the embolus are elastic. During the gradual release of the valve, the valve can expand outward under its own elastic force, and the embolus can move radially along the retraction assembly. The valve can first partially unfold. When the shape and position of the valve meet the preset requirements, the embolus assembly can be pulled to disengage the embolus from the retaining hole, thereby completely releasing the valve. This achieves delayed and controllable valve release. Currently, when the valve and delivery device release the valve and disengage from the delivery device, the valve will instantly and completely unfold due to its own elasticity. This relatively rapid and large-amplitude deformation may cause valve displacement or even damage to the human body, thus affecting the effectiveness of use. Furthermore, since the valve needs to be loaded into a small delivery device for delivery into the body, the size of the valve in the connected state and the disengaged state differs greatly. A connecting structure is needed to fix the valve. If a long claw structure is placed on the valve, it will increase the size of the valve, affecting the valve's structural design and even increasing the risk of disease. The delivery device provided in this application can delay and controllably release the valve, reducing the possibility of valve displacement or damage to the human body when the valve deforms during release.

[0010] In one possible implementation, the retraction assembly is provided with a through hole through which the stud wire can pass and engage with the fixing hole.

[0011] The embolic wire assembly can move axially along the delivery device. The embolic wire assembly is positioned on the side of the retraction assembly away from the valve. A through-hole extends through the retraction assembly along the axial direction of the delivery device, allowing the embolic wire to pass through the through-hole and extend into the valve's fixing hole, thus preventing the valve from disengaging and keeping the valve in a connected state. When the embolic wire assembly moves away from the retraction assembly, the embolic wire can move within the through-hole, thereby disengaging from the fixing hole. The valve is no longer restricted by the embolic wire and can unfold under its own elastic force. The through-hole and fixing claw are correspondingly arranged, and the through-hole guides the embolic wire, ensuring accurate engagement between the embolic wire and the valve's fixing hole, reducing the possibility of embolic wire misalignment.

[0012] In one possible implementation, the retraction component is provided with a clearance portion, which is correspondingly disposed to the fixing claw and communicates with the through hole.

[0013] The clearance portion is located on the side of the fixing claw in the retraction assembly near the axial direction of the retraction assembly. The clearance portion is recessed in the direction near the axis of the retraction assembly. When the fixing portion extends into the limiting hole, the fixing portion can be bent in the direction near the axis of the retraction assembly. At least a part of the fixing portion can extend into the clearance portion, so that the fixing hole can cooperate with the bolt wire.

[0014] In one possible implementation, one end of the fixing claw is connected to the end of the retraction assembly near the bolt assembly, and the other end is provided with the limiting hole, and the size of the fixing claw at the end with the limiting hole is larger than the size of the other end.

[0015] One end of the fixing claw is fixed to the end of the retraction assembly near the wire assembly, and the other end extends to the end of the retraction assembly away from the wire assembly. This arrangement can extend the overall length of the fixing claw and improve its elasticity. The fixing claw can be set to a larger size at the end where the limiting hole is set, so that the limiting hole has sufficient setting area without increasing the volume of other parts of the fixing claw. When the valve is released, the fixing claw has good elasticity to fix the valve, so that the valve first reaches a partially unfolded state, thereby achieving control over the valve release.

[0016] In one possible implementation, the retraction assembly includes a plurality of fixing claws, the stud assembly is provided with a plurality of studs, and the plurality of fixing claws are arranged circumferentially along the retraction assembly.

[0017] Multiple retaining claws are arranged circumferentially along the retraction assembly, which can fix the valve simultaneously from multiple directions, so that the valve can be stably fixed and the force is even. When released, the ferrule assembly can drive multiple ferrules to disengage from the fixing holes at the same time, and the multiple retaining claws can release the restriction on the valve at the same time, so that the valve can unfold evenly and reduce the possibility of the valve shifting during unfolding due to unbalanced force.

[0018] In one possible implementation, the retraction component is provided with a mounting groove, the fixing claw is disposed in the mounting groove, the mounting groove communicates with the clearance portion, and the mounting groove is correspondingly disposed with the through hole.

[0019] The mounting slot and the fixing claw are correspondingly provided, and the mounting slot and the clearance part are connected. When the valve is in the connected state, at least part of the fixing claw can be embedded in the mounting slot, so that the fixing claw does not protrude relative to the surface of the retraction component, which facilitates the storage of the retraction component, thereby facilitating the delivery device to deliver the valve into the human body. The limiting hole can be located in the clearance part, which facilitates the fixing part to extend into the limiting hole and cooperate with the stud wire.

[0020] In one possible implementation, the conveying device includes a defilothing device and a defilothing connecting pipe, one end of which is connected to the wire-binding assembly and the other end of which is connected to the defilothing device, the defilothing device being movable along the axial direction of the conveying device.

[0021] The unwinding device is equipped with a handle and is connected to the unwinding connecting tube and the embolization assembly. When the delivery device delivers the valve into the human body, the unwinding device facilitates the movement of the embolization assembly, thereby enabling the movement of the embolization to control the release of the valve.

[0022] In one possible implementation, the delivery device includes an outer tube and a rotating wheel assembly connected to the outer tube. The rotating wheel assembly is movable along the axial direction of the delivery device to drive the outer tube to move and release the valve.

[0023] The outer tube is used to fix and store the valve. The rotating wheel assembly is located at the end of the delivery system away from the valve. The rotating wheel assembly includes threads. When the rotating wheel assembly is rotated, it can move along the axial direction of the delivery device, thereby driving the outer tube to move, releasing the valve from its restriction, and thus releasing the valve. Using the rotating wheel assembly for control can improve the accuracy of the outer tube release.

[0024] In one possible implementation, the conveying device includes a locking device capable of locking the defilothing device and restricting its movement in the axial direction of the conveying device.

[0025] The locking device is located at the end of the unwinding device away from the wire-locking assembly. The locking device may include a locking groove and a locking member. Part of the locking member can extend into the locking groove, and the other part of the locking member protrudes relative to the locking groove, thereby restricting the unwinding device from moving in the direction of the wire-locking assembly. After the locking member disengages from the locking groove, it releases the lock on the unwinding device. The locking device can reduce the possibility of misoperation and reduce the risk of premature valve release.

[0026] In one possible implementation, the delivery device includes an inlet device having a protrusion that surrounds the sidewall of the inlet device and has the same shape as the end profile of the valve after contraction.

[0027] The delivery device has a conical tip for easy insertion into the human body. The delivery device includes a protrusion that surrounds the tip and is arc-shaped, matching the shape of the valve in the connected state, which facilitates the delivery device to receive the valve. The outer tube opening can also be set as a corresponding arc-shaped opening to cooperate with the protrusion of the delivery device, making it easy for the delivery device to insert the delivery device into the human body.

[0028] This application provides a valve delivery system, which includes a valve and a delivery device. The valve is provided with a fixing part and a fixing hole. The delivery device includes an embolic wire assembly and a retraction assembly. The embolic wire assembly includes an embolic wire, and the retraction assembly includes a fixing claw with a limiting hole. When the fixing part passes through the limiting hole, the embolic wire assembly can pass through the fixing hole, preventing the fixing part from disengaging from the limiting hole, thus keeping the valve in a connected state. When the embolic wire disengages from the fixing hole, the fixing part disengages from the limiting hole under the elastic force of the valve, and the valve is in a disengaged state. By controlling the valve with the elastic fixing claw and embolic wire, the delayed and controllable release of the valve can be achieved, thereby reducing the risk of valve displacement and injury to the human body due to excessively rapid deformation during valve release.

[0029] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the valve delivery system provided in this application;

[0031] Figure 2 for Figure 1 A magnified view of part I;

[0032] Figure 3 A schematic diagram of the structure of the pullback component provided in this application;

[0033] Figure 4 This is a schematic diagram of the structure of the stud assembly provided in this application;

[0034] Figure 5 This is an assembly drawing of the valve delivery system provided in this application;

[0035] Figure 6 This is a schematic diagram of the introductory device provided in this application.

[0036] Figure label:

[0037] 1-Fixing part;

[0038] 11-Fixing hole;

[0039] 2-Threading assembly;

[0040] 21-Stem wire;

[0041] 3-Retreat component;

[0042] 31-Fixing claw;

[0043] 32-Limiting hole;

[0044] 33-Through hole;

[0045] 34-Avoidance section;

[0046] 35 - Mounting slot;

[0047] 4- Desiccant device;

[0048] 5-Wire removal connecting pipe;

[0049] 6-Outer tube;

[0050] 7-Rotator assembly;

[0051] 8-Locking device;

[0052] 9-Introduction device;

[0053] 91 - Protrusion.

[0054] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0055] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0056] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0057] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0058] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0059] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0060] like Figure 1 and Figure 2 As shown, this application embodiment provides a valve delivery system, which includes a valve with a fixing part 1 and a delivery device. The delivery device includes an embolic wire assembly 2 and a retraction assembly 3. The embolic wire assembly 2 includes an embolic wire 21 that extends along the axial direction of the delivery device. The retraction assembly 3 includes a fixing claw 31 with a limiting hole 32 through which the fixing part 1 can pass. The fixing claw 31 is elastic. When the fixing part 1 passes through the limiting hole 32 and the embolic wire 21 passes through the fixing hole 11 of the fixing part 1, the valve can partially expand under its own elastic force, and the fixing part 1 cannot detach from the limiting hole 32. The valve is in a connected state. When the embolic wire 21 detaches from the fixing hole 11, the fixing part 1 can detach from the limiting hole 32, and the valve is in a disengaged state.

[0061] The valve delivery system provided in this application embodiment is used to place a valve in a patient's body. The valve can be a self-expanding valve. After being delivered to a preset position, the self-expanding valve can automatically expand to provide support after being released from fixation. The valve has a fixing part 1 for fixing and storing the valve in the delivery device. Specifically, the fixing part 1 is provided with a fixing hole 11. The delivery device is used to deliver the valve into the human body. At least a portion of the fixing part 1 of the valve can pass through the limiting hole 32. At this time, the embolic wire 21 can pass through the fixing hole 11 of the valve, so that the fixing part 1 cannot be detached from the limiting hole 32, and the valve is in a connected state. When the delivery device delivers the valve to the preset position in the body, the valve is released. The valve gradually opens under its own deformation elastic force until the fixing claw 31 is fully opened. At this time, the embolic wire assembly 2 can be pulled to disengage the embolic wire 21 from the limiting hole 32. The fixing part 1 of the valve can disengage from the limiting hole 32 under its own elastic force, thereby expanding and opening, and the valve is in a disengaged state. The fixing claw 31 is elastic. During valve release, the valve can expand outward under its own elastic force. The embolus 21 can move radially along the retraction assembly 3, allowing the valve to partially unfold first. When the valve's shape and position meet the preset requirements, the embolus assembly 2 can be pulled to disengage the embolus 21 from the fixing hole 11, thus fully releasing the valve and achieving delayed and controllable release. Currently, when the valve and delivery device release the valve and detach it from the delivery device, the valve will instantly and completely unfold due to its own elasticity. This relatively rapid and large-amplitude deformation may cause valve displacement or even damage to the human body, thus affecting the effectiveness of use. In addition, since the valve needs to be loaded into a small delivery device for delivery into the body, the size of the valve in the connected state and the disengaged state differs greatly. A connection structure is needed to fix the valve. If a long claw structure is placed on the valve, it will increase the size of the valve, affecting the valve's structural design and even increasing the risk of disease. The delivery mechanism provided in this application embodiment can controllably delay the release of the valve, thereby reducing the possibility of valve displacement or damage to the human body when the valve deforms during release.

[0062] like Figures 1 to 3 As shown, in one possible implementation, the retraction component 3 is provided with a through hole 33, through which the stud wire 21 can pass and engage with the fixing hole 11.

[0063] The embolus assembly 2 is axially movable along the conveying device. The embolus assembly 2 is positioned on the side of the retraction assembly 3 away from the valve. A through-hole 33 extends through the retraction assembly 3 axially along the conveying device. The embolus 21 passes through the through-hole 33 and extends into the valve's fixing hole 11, thus preventing the valve from disengaging and keeping the valve in a connected state. When the embolus assembly 2 moves away from the retraction assembly 3, the embolus 21 can move within the through-hole 33, thereby disengaging from the fixing hole 11. The valve is no longer restricted by the embolus 21 and can unfold under its own elastic force. The through-hole 33 corresponds to the fixing claw 31, and the through-hole 33 guides the embolus 21, ensuring accurate engagement between the embolus 21 and the valve's fixing hole 11, reducing the possibility of the embolus 21 shifting.

[0064] like Figure 3 As shown, in one possible implementation, the retraction component 3 is provided with a clearance part 34, which is correspondingly provided with the fixing claw 31 and communicates with the through hole 33.

[0065] The clearance part 34 is provided on the side of the fixing claw 31 in the retraction assembly 3 near the axial direction of the retraction assembly 3. The clearance part 34 is recessed in the direction near the axis of the retraction assembly 3. When the fixing part 1 extends into the limiting hole 32, the fixing part 1 can be bent in the direction near the axis of the retraction assembly 3. At least part of the fixing part 1 can extend into the clearance part 34, so that the fixing hole 11 can cooperate with the bolt 21.

[0066] like Figure 3 As shown, in one possible implementation, one end of the fixing claw 31 is connected to the end of the retraction assembly 3 near the bolt assembly 2, and the other end is provided with a limiting hole 32, and the size of the fixing claw 31 with the limiting hole 32 is larger than the size of the other end.

[0067] One end of the fixing claw 31 is fixed to the end of the retraction assembly 3 near the end of the wire-electrode assembly 2, and the other end extends to the end of the retraction assembly 3 away from the end of the wire-electrode assembly 2. This arrangement can extend the overall length of the fixing claw 31 and improve its elasticity. The fixing claw 31 can be set with a larger size at the end where the limiting hole 32 is set, so that the limiting hole 32 has sufficient setting area and does not increase the volume of other parts of the fixing claw 31. When the valve is released, the fixing claw 31 has good elasticity to fix the valve, so that the valve reaches a partially unfolded state first, thereby realizing the control of delayed valve release.

[0068] like Figure 3 and Figure 4 As shown, in one possible implementation, the retraction component 3 includes a plurality of fixing claws 31, and the wire-pinning component 2 is provided with a plurality of wires 21, with the plurality of fixing claws 31 arranged circumferentially along the retraction component 3.

[0069] Multiple fixing claws 31 are arranged circumferentially along the retraction assembly 3, which can fix the valve from multiple directions at the same time, so that the valve can be stably fixed and the force is even. When released, the ferrule assembly 2 can drive multiple ferrules 21 to disengage from the fixing hole 11 at the same time, and the multiple fixing claws 31 release the restriction on the valve at the same time, so that the valve can unfold evenly and reduce the possibility of the valve shifting during unfolding due to unbalanced force.

[0070] like Figure 3 As shown, in one possible implementation, the retraction component 3 is provided with a mounting groove 35, and a fixing claw 31 is provided in the mounting groove 35. The mounting groove 35 communicates with the clearance part, and the mounting groove 35 is correspondingly provided with the through hole 33. The fixing claw 31 is fixed at one end of the retraction component 3 near the bolt assembly 2.

[0071] The mounting groove 35 is correspondingly provided with the fixing claw 31, and the mounting groove 35 is connected to the clearance part. When the valve is in the connected state, at least a part of the fixing claw 31 can be embedded in the mounting groove 35, so that the fixing claw 31 does not protrude relative to the surface of the retraction component 3, which facilitates the storage of the retraction component 3, thereby facilitating the delivery device to deliver the valve into the human body. The limiting hole 32 can be located in the clearance part 34, which facilitates the fixing part 1 to extend into the limiting hole 32 and cooperate with the ferrule 21.

[0072] like Figure 1 As shown, in one possible implementation, the conveying device includes a defilothing device 4 and a defilothing connecting pipe 5. One end of the defilothing connecting pipe 5 is connected to the wire-binding assembly 2, and the other end is connected to the defilothing device 4. The defilothing device 4 is capable of moving along the axial direction of the conveying device.

[0073] The unwinding device 4 is equipped with a handle and is connected to the plugging assembly 2 via the unwinding connecting tube 5. When the delivery device delivers the valve into the human body, the unwinding device 4 facilitates the movement of the plugging assembly 2, thereby enabling the movement of the plugging 21 to control the release of the valve.

[0074] like Figure 5 As shown, in one possible implementation, the delivery device includes an outer tube 6 and a rotating wheel assembly 7 connected to the outer tube 6. The rotating wheel assembly 7 is movable along the axial direction of the delivery device to drive the outer tube 6 to move and release the valve.

[0075] The outer tube 6 is used to fix and store the valve. The rotating wheel assembly 7 is located at the end of the conveying system away from the valve. The rotating wheel assembly 7 includes threads. When the rotating wheel assembly 7 is rotated, it can move along the axial direction of the conveying device, thereby driving the outer tube 6 to move, releasing the restriction on the valve, and thus releasing the valve. Using the rotating wheel assembly 7 for control can improve the accuracy of the release of the outer tube 6.

[0076] like Figure 1 and Figure 5As shown, in one possible implementation, the conveying device includes a locking device 8, which is capable of locking the desiccant 4 and restricting the desiccant 4 from moving in the axial direction of the conveying device.

[0077] The locking device 8 is located at the end of the unwinding device 4 away from the wire-binding assembly 2. The locking device 8 may include a locking groove and a locking member. Part of the locking member can extend into the locking groove, and the other part of the locking member protrudes relative to the locking groove, thereby restricting the unwinding device 4 from moving away from the wire-binding assembly 2. After the locking member disengages from the locking groove, it releases the locking on the unwinding device 4. The locking device 8 can reduce the possibility of misoperation and reduce the risk of premature valve release.

[0078] like Figure 6 As shown, in one possible embodiment, the delivery device includes an inlet device 9, which is provided with a protrusion 91. The protrusion 91 is arranged around the side wall of the inlet device 9, and the shape of the protrusion 91 is the same as the shape of the end of the valve after contraction.

[0079] The introducing device 9 has a conical tip for easy entry into the human body. The introducing device 9 includes a protrusion 91 that surrounds the tip and is arc-shaped, matching the shape of the valve end in the connected state, which facilitates the delivery device to receive the valve. The opening of the outer tube 6 can also be set as a corresponding arc-shaped opening, which cooperates with the protrusion 91 of the introducing device 9 to facilitate the introducing device 9 to introduce the delivery device into the human body.

[0080] This application provides a valve delivery system, which includes a valve and a delivery device. The valve is provided with a fixing part 1, and the fixing part 1 is provided with a fixing hole 11. The delivery device includes an embolus assembly 2 and a retraction assembly 3. The embolus assembly 2 includes an embolus 21, and the retraction assembly 3 includes a fixing claw 31. The fixing claw 31 is provided with a limiting hole 32 and is elastic. When the fixing part 1 passes through the limiting hole 32, the embolus assembly 2 can pass through the fixing hole 11, preventing the fixing part 1 from disengaging from the limiting hole 32, so that the valve is in a connected state. When the embolus 21 disengages from the fixing hole 11, the fixing part 1 disengages from the limiting hole 32 under the elastic force of the valve, and the valve is in a disengaged state. By controlling the valve through the elastic fixing claw 31 and the embolus 21, the delayed and controllable release of the valve can be achieved, thereby reducing the risk of valve displacement and injury to the human body due to excessively rapid deformation during valve release.

[0081] 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. A valve delivery system, characterized in that, The valve delivery system includes a valve with a fixing part (1) and a delivery device, the delivery device including: A wire-pinning assembly (2) includes a wire (21) extending axially along the conveying device; The retraction assembly (3) includes a fixing claw (31) with a limit hole (32) and the fixing part (1) can pass through the limit hole (32); the retraction assembly (3) is provided with a through hole (33) which passes through the retraction assembly (3) along the axial direction of the conveying device. The fixing claw (31) is elastic. When the fixing part (1) passes through the limiting hole (32) and the stent wire (21) passes through the fixing hole (11) of the fixing part (1), the valve can partially expand under its own elastic force, and the fixing part (1) cannot detach from the limiting hole (32), and the valve is in a connected state; the stent wire (21) can pass through the through hole (33) and cooperate with the fixing hole (11); When the embolism (21) disengages from the fixing hole (11), the fixing part (1) can disengage from the limiting hole (32), and the valve is in a disengaged state; The retraction assembly (3) is provided with a clearance part (34), which is correspondingly provided with the fixing claw (31) and communicates with the through hole (33); the clearance part (34) is provided on the side of the fixing claw (31) in the retraction assembly (3) close to the axial direction of the retraction assembly (3), and the clearance part (34) is recessed in the direction close to the axis of the retraction assembly (3).

2. The valve delivery system according to claim 1, characterized in that, One end of the fixing claw (31) is connected to the end of the retraction component (3) near the end of the wire assembly (2), and the other end is provided with the limiting hole (32). The size of the end of the fixing claw (31) with the limiting hole (32) is larger than the size of the other end.

3. The valve delivery system according to claim 1, characterized in that, The retraction component (3) includes multiple fixing claws (31), and the anchor wire component (2) is provided with multiple anchor wires (21). The multiple fixing claws (31) are arranged circumferentially along the retraction component (3).

4. The valve delivery system according to claim 1, characterized in that, The retraction component (3) is provided with a mounting groove (35), the fixing claw (31) is provided in the mounting groove (35), the mounting groove (35) is connected to the avoidance part (34), and the mounting groove (35) is correspondingly provided with the through hole (33).

5. The valve delivery system according to any one of claims 1 to 4, characterized in that, The conveying device includes a desiccant (4) and a desiccant connecting pipe (5). One end of the desiccant connecting pipe (5) is connected to the desiccant assembly (2), and the other end is connected to the desiccant (4). The desiccant (4) is capable of moving along the axial direction of the conveying device.

6. The valve delivery system according to any one of claims 1 to 4, characterized in that, The delivery device includes an outer tube (6) and a rotating wheel assembly (7), the rotating wheel assembly (7) and the outer tube (6) are connected, and the rotating wheel assembly (7) can move along the axial direction of the delivery device to drive the outer tube (6) to move and release the valve.

7. The valve delivery system according to claim 5, characterized in that, The conveying device includes a locking device (8) that can lock the desiccant (4) and restrict the desiccant (4) from moving in the axial direction of the conveying device.

8. The valve delivery system according to any one of claims 1 to 4, characterized in that, The delivery device includes an inlet device (9), which is provided with a protrusion (91). The protrusion (91) is arranged around the side wall of the inlet device (9), and the shape of the protrusion (91) is the same as the end contour shape of the valve after contraction.

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