An occluder system

Abstract

The application discloses a closure system, which comprises a pushing device and a closure connected with the pushing device, the pushing device comprises an auxiliary line, the closure comprises a closure body and a limiting piece, wherein the limiting piece is connected with the closure body; the auxiliary line is movably connected with the limiting piece; wherein after the proximal end of the auxiliary line is subjected to a pulling force, the limiting piece moves towards the proximal end relative to the closure body until the limiting piece is pulled out of the closure body; the auxiliary line is provided with a first developing material; in the process that the auxiliary line moves towards the proximal end relative to the closure body until the limiting piece is pulled out of the closure body, the auxiliary line changes from a first state to a second state different from the first state; when the auxiliary line is in the first state, the limiting piece is in the closure body; when the auxiliary line is in the second state, the limiting piece is pulled out of the closure body. Whether the limiting piece is pulled out of the closure is judged by the change of the auxiliary line from the first state to the second state, so that whether the closure is normally released is confirmed.

Description

Technical Field

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

[0002] In the medical field, occluder systems are a type of medical device used for minimally invasive interventional treatments. They consist of an occluder and a delivery device. The occluder is implanted into the body via the delivery device. Its core function is to physically seal abnormal channels, defects, or fistulas within the body, restoring the normal physiological structure and function of organs. This replaces traditional, more invasive surgeries such as open-chest and open-abdomen surgeries, offering advantages such as minimal invasiveness, safety, and rapid recovery. Its applications are concentrated in multiple subfields, including cardiovascular, neurological, digestive, and respiratory diseases. However, current occluders are made of polymer materials and are not visualized under digital subtraction angiography (DSA). Traditional delivery devices can only push the occluder and cannot effectively determine whether it has been properly released, thus compromising the occlusion effect.

[0003] Therefore, it is urgent to improve the occluder system to solve the problem of not being able to accurately determine whether the occluder has been released normally through the pushing device. Summary of the Invention

[0004] This application provides a occluder system that can solve the problem of not being able to accurately determine whether the occluder has been properly released through the pushing device.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is: to provide a blocking device system, including a pushing device and a blocking device connected to the pushing device, wherein the pushing device includes an auxiliary line, and the blocking device includes: The plugging device body; A limiting component is connected to the blocker body, and the auxiliary line is movably connected to the limiting component; When the proximal end of the auxiliary line is subjected to tension, the limiting member moves proximal to the occluder body until the limiting member is pulled out of the occluder body; The auxiliary line has a first developing material; During the process of the limiting member moving proximally relative to the occluder body until the limiting member is pulled out of the occluder body, the auxiliary line changes from a first state to a second state different from the first state; When the auxiliary line is in the first state, the limiting member is located in the blocker body; When the auxiliary line is in the second state, the limiting member is pulled out of the blocker body.

[0006] The pushing device further includes a pushing rod, the distal end of which is a hollow guide portion; The auxiliary line extends from the guide portion to the proximal end of the push rod; The guide portion is at least partially visible; by passing through a portion of the guide portion through the auxiliary line, it is determined whether the auxiliary line is in the first state or the second state.

[0007] The guide portion is made of metal and has multiple windows arranged circumferentially around it. Alternatively, the guide portion may be made of a polymer material, and the guide portion may contain at least one developing element or be doped with a second developing material.

[0008] The push rod has a third developing material, and under medical imaging, the developing grayscale of the first developing material, the second developing material, and the third developing material are different. And / or, the grayscale of the third developer is deeper than the grayscale of the first developer.

[0009] The guide portion is made of polymer material, and the guide portion is provided with multiple imaging elements spaced apart along the axial direction. The multiple imaging elements spaced apart have different grayscale values ​​under medical imaging equipment.

[0010] The guide portion is made of polymer material, and the guide portion is provided with a plurality of developing elements spaced apart along the axial direction. The distance between each developing element and the distal end of the guide portion ranges from 0 to 10 mm. Each of the developing elements has an axial length of 0.1-4 mm.

[0011] The auxiliary line is folded in half to form a bent section, which is movably hooked to the limiting member. The end of the auxiliary line away from the bent section passes through the guide and extends to the proximal end of the push rod. When a tensile force is applied to the auxiliary line near its proximal end, the position of the bent section changes from a first position to a second position different from the first position. In the first position, the bent section is located at the distal end of the guide portion. In the second position, the bent section is not visible under medical imaging.

[0012] The pushing device further includes: The loader is hollow, and the push rod can be movably inserted through the loader; The loader is provided with a first concave-convex structure, and the push rod is provided with a plurality of second concave-convex structures arranged at intervals along its axial direction. When the push rod moves toward the distal end relative to the loader, the plurality of second concave-convex structures sequentially engage with the first concave-convex structure. Alternatively, the loader may have a plurality of first concave-convex structures arranged at intervals along its axial direction, and the push rod may have a second concave-convex structure. When the push rod moves toward the distal end relative to the loader, the second concave-convex structure engages with the plurality of first concave-convex structures in sequence.

[0013] The pushing device further includes an operating component connected to the auxiliary line; by controlling the operating component to move a set stroke length, the auxiliary line drives the limiting component to move linearly towards the proximal end relative to the occluder body, thereby releasing the occluder.

[0014] Another technical solution adopted in this application is: providing a occluder system, including an occluder and a pushing device connected to the occluder, the pushing device including an auxiliary line, and the occluder including: The plugging device body; A limiting member is movably connected to the occluder body, and an auxiliary line is movably connected to the limiting member. When the proximal end of the auxiliary line is subjected to tension, the limiting member moves proximal to the occluder body until the limiting member is pulled out of the occluder body. The pushing device also includes: Operating component, connected to the auxiliary line; By controlling the movement of the operating component to a set first stroke length, the auxiliary line is driven to pull the limiting component linearly towards the proximal end relative to the occluder body for a second stroke length, thereby pulling the limiting component out of the occluder body.

[0015] The pushing device further includes a handle and a rotating component. The operating component passes through the handle, and the rotating component is sleeved on the operating component and movably connected to the operating component and the handle. The auxiliary line passes through the operating component. When the rotating component rotates relative to the handle, the rotating component drives the operating component to move linearly, thereby driving the auxiliary line to move.

[0016] The pushing device further includes: Push lever; The loader is hollow; the push rod can be movably inserted through the loader; The loader is provided with a first concave-convex structure, and the push rod is provided with a plurality of second concave-convex structures arranged at intervals along the axial direction. When the push rod moves toward the distal end relative to the loader, the plurality of second concave-convex structures are sequentially engaged with the first concave-convex structure. Alternatively, the loader may have a plurality of first concave-convex structures arranged at intervals along its axial direction, and the push rod may have a second concave-convex structure. When the push rod moves toward the distal end relative to the loader, the second concave-convex structure engages with the plurality of first concave-convex structures in sequence.

[0017] The auxiliary line has a first developing material; As the auxiliary line pulls the limiting member to move linearly toward the proximal end relative to the occluder body, it changes from a first state to a second state different from the first state. When the auxiliary line is in the first state, the limiting member is located in the blocker body; When the auxiliary line is in the second state, the limiting member is pulled out of the blocker.

[0018] The beneficial effects of this application are: by using an auxiliary line with a first developing material, the position of the limiting member is determined by the state of the auxiliary line, thereby determining whether the limiting member has been pulled out of the plug. The state of the limiting member can be accurately determined, and then the state of the limiting member can be used to determine whether the plug is released normally, thereby ensuring the plugging effect of the plug. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of an embodiment of the occluder system in the first state. Figure 2 This is a schematic diagram of an embodiment of the occluder system in the second state. Figure 3 This is a schematic diagram of one embodiment of the pushing device and loader in this application; Figure 4 This is a schematic diagram of another embodiment of the occluder system in this application with the auxiliary line in the first state; Figure 5 This is a schematic diagram of another embodiment of the occluder system in this application with the auxiliary line in the second state; Figure 6 This is a schematic diagram of another embodiment of the occluder system in this application with the auxiliary line in the first state; Figure 7This is a schematic diagram of another embodiment of the occluder system in this application with the auxiliary line in the second state; Figure 8 This is a schematic diagram of another embodiment of the occluder system in this application with the auxiliary line in the second state; Figure 9 This is a schematic diagram of the structure of one embodiment of the remote device in this application; Figure 10 This is a schematic diagram of another embodiment of the occluder system in this application; Figure 11 for Figure 10 A cross-sectional structural diagram of the central plugging device system along AA' of one embodiment.

[0020] Explanation of reference numerals in the attached drawings: 20 Occluder body; 21 First umbrella disc; 22 Second umbrella disc; 1 Auxiliary line; 14 Bending section line body; 2 Limiting element; 10 Pushing device; 11 Loader; 111 First concave-convex structure; 12 Pushing rod; 13 Handle; 121 Second concave-convex structure; 122 Window; 123 Guide part; 1231 Developing element; 30 Rotating element; 40 Operating element. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0026] Please see Figure 1 , Figure 2 and Figure 3 This application provides an occluder system (not shown), which includes a pushing device 10 and an occluder (not shown) connected to the pushing device 10. The pushing device 10 includes an auxiliary line 1, and the occluder includes an occluder body 20 and a limiting member 2, wherein the limiting member 2 is connected to the occluder body 20; the auxiliary line 1 is movably connected to the limiting member 2; wherein when the proximal end of the auxiliary line 1 is subjected to a pulling force, the limiting member 2 moves proximal to the occluder body 20 until the limiting member 2 is pulled out of the occluder body 20; wherein the auxiliary line 1 has a first imaging material; during the process of the limiting member 2 moving proximal to the occluder body 20 until the limiting member 2 is pulled out of the occluder body 20, the auxiliary line 1 changes from a first state to a second state different from the first state; in the first state, the limiting member 2 is located in the occluder body 20; in the second state, the limiting member 2 is pulled out of the occluder body 20.

[0027] Specifically, the occluder system in this application includes a pushing device 10 and an occluder connected to the pushing device 10. The limiting member 2 in the occluder is connected to the occluder body 20. The limiting member 2 is the structural stabilizer and safety guarantee core of the occluder body 20. Its core function is to fix the unfolded shape of the occluder and ensure long-term structural stability through controllable mechanical locking, so as to ensure that the occluder body 20 can continuously and effectively close the abnormal channels in the patient's body and avoid surgical failure or serious complications caused by structural failure.

[0028] When the occluder is in the delivery state (e.g., the occluder is in the delivery sheath, or the occluder has been pushed out of the delivery sheath but has not yet deployed), the occluder is in a stretched state. In this state, the limiting member 2 is located inside the occluder body 20. Alternatively, when the occluder is in the release state, the occluder body 20 is in a radially deployed state, but the limiting member 2 is still located inside the occluder body 20. In this state, the shape of the occluder cannot be fixed, and effective occlusion cannot be achieved. When the occluder is in the release state, the occluder body 20 is in a radially deployed state, and in this state, the limiting member 2 is located outside the occluder body 20, which can limit or lock the occluder body 20 to keep the occluder body 20 in a radially deployed state.

[0029] The limiting member 2 is movably connected to the auxiliary line 1. During operation, after the auxiliary line 1 is pulled proximally by the pushing device 10, the limiting member 2 moves proximally relative to the occluder body 20 until it is pulled out. Once pulled out, the limiting member 2 serves to fix the shape of the occluder body 20. The auxiliary line 1 has a first radiopaque material, allowing its shape to be observed in real time under medical imaging. During the process of the auxiliary line 1 pulling the limiting member 2, the shape of the auxiliary line 1 changes. Specifically, the auxiliary line 1 changes from a first state to a second state. The first and second states are different. When the auxiliary line 1 is in the first state, the limiting member 2 is inside the occluder body 20; when the auxiliary line 1 is in the second state, the limiting member 2 is pulled out of the occluder body 20. At this time, the limiting member 2 can be used to maintain the shape of the occluder body 20, ensuring the occlusion effect of the occluder.

[0030] In this application, by using an auxiliary line 1 with a first developing material, the position of the limiting member 2 is determined by the state of the auxiliary line 1, thereby determining whether the limiting member 2 has been pulled out of the blocker body 20. The state of the limiting member 2 can be accurately determined, and the state of the blocker can be indirectly determined based on the state of the limiting member 2, so as to determine whether the blocker is released normally, thereby ensuring the blocking effect.

[0031] The auxiliary line 1 may be made of a first developing material, for example, it may be a metal wire made of a developable metal material. Alternatively, the auxiliary line 1 may be a wire made of a mixed material obtained by doping a non-developable material with the first developing material.

[0032] In one embodiment, the terms "proximal end" and "far end" as defined in this application refer to the relative distance between the proximal end and the operator or the starting point of operation.

[0033] Please continue reading. Figure 1 and Figure 2 The pushing device 10 also includes a pushing rod 12, the distal end of which is a hollow guide portion 123; an auxiliary line 1 passes through the guide portion 123 and extends to the proximal end of the pushing rod 12; at least part of the guide portion 123 is developable; the auxiliary line 1 is determined to be in a first state or a second state by the portion of the auxiliary line 1 that passes through the guide portion 123. Specifically, the distal end of the pushing rod 12 is a hollow guide portion 123, and the proximal end of the pushing rod 12 is also a hollow structure. In this case, the auxiliary line 1 passes through the guide portion 123 and extends to the proximal end of the pushing rod 12, so that a pulling force can be applied to the auxiliary line 1 at the proximal end of the pushing rod 12, thereby causing the auxiliary line 1 to move the limiting member 2. In one embodiment, part of the guide portion 123 is developable; in another embodiment, all of the guide portions 123 are developable. At the same time, the shape of the auxiliary line 1 changes after the auxiliary line 1 has not pulled out the limiting member 2 and after the auxiliary line 1 has pulled out the limiting member 2. When the auxiliary line 1 is pulled but has not yet pulled out the limiting member 2, the auxiliary line 1 is in the first state. When the auxiliary line 1 pulls out the limiting member 2, the auxiliary line 1 is in the second state.

[0034] Specifically, such as Figure 1 As shown, when the auxiliary line 1 does not pull out the limiting member 2, the auxiliary line 1 is in a taut state, and under medical imaging, the auxiliary line 1 can be observed to be straight, which is the first state. At this time, the operator can confirm that the limiting member 2 has not been pulled out. Figure 2 As shown, when the auxiliary line 1 pulls out the limiting member 2, the auxiliary line 1 is in a relaxed state. Under medical imaging, it appears as an arc, a circle, or an irregular loop. That is, the auxiliary line 1 can be observed to be in the second state under medical imaging. At this time, the operator can determine that the limiting member 2 has been pulled out, and thus determine that the occluder is in the locked radial expansion state.

[0035] Please continue reading. Figure 1 and Figure 2 In one embodiment, the guide portion 123 is made of metal, and has multiple windows 122 arranged circumferentially around it. Specifically, the metal guide portion 123 is visible under medical imaging. When the auxiliary line 1 is located within the guide portion 123, it will obscure the auxiliary line 1 under medical imaging, preventing the operator from observing its shape. This problem is solved by providing multiple windows 122 on the guide portion 123, facilitating the operator's observation of the auxiliary line 1's shape. In one embodiment, the windows 122 are positioned near the distal end of the guide portion 123. In another embodiment, the number of windows 122 can be two, three, or more.

[0036] Please see Figure 4 and Figure 5In another embodiment, the guide portion 123 is made of a polymer material. In this case, the guide portion 123 will not be visible under hospital imaging, making it easier for operators to observe the shape of the auxiliary line 1. Figure 4 As shown, when the auxiliary line 1 does not pull out the limiting member 2, the auxiliary line 1 is in a taut state. Under medical imaging, the auxiliary line 1 can be observed to be in the first state, at which point the operator can confirm that the limiting member 2 has not been pulled out. Figure 5 As shown, when the auxiliary line 1 pulls out the limiting member 2, the auxiliary line 1 is in a relaxed state, in a circular or arc-shaped non-straightened state. Under medical imaging, the auxiliary line 1 can be observed to be in the second state. At this time, the operator can determine that the limiting member 2 has been pulled out, and thus determine that the occluder is in the locked radial expansion state.

[0037] Please see Figure 6 The auxiliary line 1 is folded in half to form a bent section 14. The bent section 14 is movably hooked to the limiting member 2 so that the limiting member 2 can be pulled out to the outside of the occluder body 20. At the same time, the end of the auxiliary line 1 away from the bent section 14 passes through the guide part 123 and extends to the proximal end of the push rod 12. Furthermore, after the limiting member 2 is pulled out to the outside of the occluder body 20, the auxiliary line 1 can be disconnected from the limiting member 2 to retract the auxiliary line 1 from the organism. Figure 6 In the middle, auxiliary line 1 has not yet been disconnected from limit member 2, but Figure 6 The plugging device is omitted. For example... Figure 6 As shown, when the auxiliary line 1 is observed to be in the first state (straight line state) under medical imaging equipment, and its bent segment 14 is located at the distal end of the guide portion 123, it can be determined that the limiting member 2 has not yet been pulled out of the occluder body 20. The position of the bent segment 14 at the distal end of the guide portion 123 is defined as the first position. By combining the shape of the auxiliary line 1 and the position of the bent segment 14 relative to the guide portion 123 to determine the position of the limiting member 2, it is beneficial to improve the accuracy of the judgment and avoid misjudgment.

[0038] Please see Figure 6 and Figure 9 In one embodiment, the guide portion 123 is made of a polymer material, and at least one imaging element 1231 or a second imaging material is disposed in the guide portion 123. The guide portion 123, composed of a polymer material, cannot be visualized under medical imaging. To obtain the position of the guide portion 123 under medical imaging, at least one imaging element 1231 is disposed in the guide portion 123, or a second imaging material is disposed in the guide portion 123. The guide portion 123 may contain only one imaging element 1231, or it may contain two, three, four, five, or more imaging elements 1231. The imaging element 1231 may be disposed near the distal end of the guide portion 123 to facilitate determining the relative positional relationship between the bent segment 14 of the auxiliary line 1 and the distal end of the guide portion 123.

[0039] Please see Figure 9 In one embodiment, the guide portion 123 is made of a polymer material, and the guide portion 123 is provided with a plurality of imaging elements 1231 spaced apart along the axial direction. The plurality of spaced imaging elements 1231 have different grayscale values ​​under medical imaging equipment. Specifically, in one embodiment, by controlling the doping concentration of the second imaging material to be different or by using different metal materials to make different imaging elements 1231, the spaced imaging elements 1231 have different grayscale values ​​under medical imaging. In another embodiment, the grayscale values ​​of the spaced imaging elements 1231 can be different by doping different imaging materials into different imaging elements 1231.

[0040] In one embodiment, the developing element 1231 may be a self-developing metal ring structure, which may be sleeved on the distal end of the guide portion 123 or embedded in the distal end tube wall of the guide portion 123. In another embodiment, the developing element 1231 may include a plurality of metal blocks, which may be distributed circumferentially around the guide portion 123 on the outside of the distal end of the guide portion 123 or in the tube wall.

[0041] In one embodiment, the developing element 1231 can be prepared by coating with electroplating and depositing a second developing material. The second developing material can be a material with a tungsten powder concentration or barium sulfate. By making the concentration of the second developing material different among the different developing elements 1231, the grayscale of the spaced-apart developing elements 1231 is different under medical imaging. By spaced-apart multiple developing elements 1231 with different grayscale under medical imaging, the surgeon can better determine the position of the bent segment 14 of the auxiliary line 1, and more accurately determine the position of the limiting element 2.

[0042] In one embodiment, the guide portion 123 is made of a polymer material. To make the guide portion 123 visible under medical imaging, it can be prepared by directly incorporating a second imaging material into the polymer material, rather than by physically adding an additional imaging element 1231. For example, barium sulfate can be incorporated into the polymer material, or barium sulfate spheres can be embedded. This method can also control the depth of the imaging color of the guide portion 123 by adjusting the concentration of the second imaging material in the guide portion 123. When the push rod 12 is visible under medical imaging, the imaging colors of the guide portion 123 and the push rod 12 form a color contrast, making it easier to distinguish between the push rod 12 and the guide portion 123. Thus, by combining the auxiliary line 1 and the guide portion 123, the position of the limiting member 2 can be accurately determined, avoiding misjudgment.

[0043] In one embodiment, the push rod 12 has a third imaging material. Under medical imaging equipment, the imaging grayscale of the third imaging material is deeper than that of the first imaging material. Thus, on the one hand, the push rod 12 and the auxiliary line 1 can be distinguished under medical imaging equipment. On the other hand, when the auxiliary line 1 enters the push rod 12, the auxiliary line 1 will disappear in the medical image. Thus, based on whether the auxiliary line 1 disappears, it can be determined whether the limiting member 2 has been pulled out to the occluder body 20.

[0044] The push rod 12 may be made of a third developing material, such as a metal. Alternatively, it may be made of a non-developable polymer material doped with the third developing material, which could be barium sulfate, tungsten powder, etc.

[0045] In another embodiment, the grayscale of the third developing material is lighter than that of the first developing material. This arrangement also allows for the differentiation between the push rod 12 and the auxiliary line 1. That is, in medical imaging, setting the grayscale of the third developing material to be different from that of the first developing material can also achieve the purpose of differentiating the push rod 12 and the auxiliary line 1.

[0046] Please continue reading. Figure 6 Under medical imaging, the auxiliary line 1 is observed to be in a straight line, indicating that the limiting member 2 is still inside the occluder body 20. Furthermore, by observing under medical imaging that the bent section 14 of the auxiliary line 1 is located at the distal end of the guide portion 123, i.e., when the bent section 14 is in the first position, it can be determined that the limiting member 2 has not yet been pulled out of the occluder body 20. Combining the shape of the auxiliary line 1 and its position relative to the guide portion 123, the position of the limiting member 2 can be determined more accurately, thereby accurately judging the release state of the occluder and avoiding misjudgment.

[0047] When in Figure 6 Under these conditions, the auxiliary line 1 was pulled until it was observed in medical imaging that the auxiliary line 1 changed from... Figure 6 The linear state changes to Figure 2 When the arc state shown is reached, that is, when the auxiliary line 1 changes to the second state, it can be determined that the limiting member 2 has been pulled out of the plug body 20.

[0048] Furthermore, in some embodiments, under medical imaging equipment, the grayscale of the third developing material is deeper than that of the first developing material. When the traction auxiliary line 1 causes the limiting member 2 to be in... Figure 2 During the process shown, a certain amount of force needs to be applied to the auxiliary line 1. When the limiting member 2 is pulled out to the outside of the occluder body 20 (this process can be observed under medical imaging of the morphological changes of the auxiliary line 1), the bent section 14 of the auxiliary line 1 will be pulled into the interior of the push rod 12, as shown. Figure 7 ( Figure 7 As shown in the diagram (excluding the occluder), because the push rod 12 appears darker in grayscale under medical imaging, the auxiliary line 1 disappears from the medical image after entering the push rod 12, confirming that the limiting member 2 has been pulled out. That is, by observing the auxiliary line 1 in the second state and its subsequent disappearance from the medical image, it can be more accurately confirmed that the limiting member 2 has been pulled out to a position outside the occluder body 20. The position where the bent section 14 of the auxiliary line 1 disappears from the medical image is defined as the second position. In the second position, the bent section 14 is located near the guide portion 123, but due to the obstruction of the push rod 12, the bent section 14 disappears from the medical image. When the bent section 14 is in the second position, it is not visible under the medical image, confirming that the limiting member 2 has been pulled out and is located within the occluder body 20.

[0049] In some embodiments, when the traction auxiliary line 1 causes the limiting member 2 to be in the position of Figure 2 After reaching the state shown, if the force on the auxiliary line 1 is insufficient to pull the bent section 14 of the auxiliary line 1 into the push rod 12, and it remains in the state shown in Figure 2, it can also be determined that the limiting member 2 is located outside the occluder body 20. In this case, to further confirm that the limiting member 2 is located outside the occluder body 20, the auxiliary line 1 can be pulled proximally. When pulled to a certain extent, the auxiliary line 1 is pulled into the push rod 12 and disappears under medical imaging. Thus, it can be more certain that the limiting member 2 is located outside the occluder body 20, and the occluder is in a locked radially extended state. The proximal end of the auxiliary line 1 is subjected to tension, causing the bent section 14 of the auxiliary line 1 to move from the first position to the second position. Under medical imaging, the position of the bent section 14 relative to the guide (123) confirms that the bent section 14 is released in the first position. When the bent section 14 is not visible under medical imaging, it is confirmed that the bent section 14 is in the second position. This confirms that the limiting member 2 is located outside the occluder body 20, and the occluder is in a locked radially extended state.

[0050] like Figure 8 As shown, after the operator pulls the auxiliary line 1 until it disappears under the medical image, the operator releases or gently pulls the auxiliary line 1. At this time, the auxiliary line 1 moves back and forth in the blank segment between the distal end of the guide part 123 and the push rod 12. It can be determined that the limiting member 2 has been pulled out of the occluder body 20. At this time, the auxiliary line 1 is in the second state, and it can be confirmed that the limiting member 2 has been pulled out.

[0051] Please continue reading. Figure 9The guide portion 123 is made of a polymer material, and the distance between the distal end of each developing element 1231 and the guide portion 123 ranges from 0 to 10 mm. Furthermore, among the multiple developing elements 1231, the distance between each developing element 1231 and the distal end face of the guide portion 123 differs from the distances between the other developing elements 1231 and the distal end face of the guide portion 123. In one embodiment, the distance between the developing element 1231 and the distal end face of the guide portion 123 can be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 mm. Setting the distance between the developing element 1231 and the distal end face of the guide portion 123 facilitates the determination of the state of the auxiliary line 1. A distance of 0 mm between the developing element 1231 and the distal end face of the guide portion 123 means that the distal end face of the developing element 1231 is flush with the distal end face of the guide portion 123.

[0052] Each imaging element 1231 has an axial length of 0.1-4 mm. Specifically, the axial length of the imaging element 1231 can be 0.1, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, or 4 mm. By limiting the axial length of the imaging element 1231, it is easier to observe its position under medical imaging. Furthermore, setting the imaging element 1231 with the above-mentioned axial length does not significantly increase the rigidity of the push rod 12, thus giving the push rod 12 a certain degree of flexibility to facilitate its insertion into lumens (such as blood vessels) in biological organisms.

[0053] In one embodiment, the grayscale of the third developing material under medical imaging equipment differs from that of the first and second developing materials. Specifically, because the grayscale of the third, first, and second developing materials differs, the guide portion 123, the auxiliary line 1, and the push rod 12 are easily observed under medical imaging, and accurate judgment can be made, facilitating operation by the operator.

[0054] Understandably, the delivery device 10 also includes a delivery sheath (not shown), which is used to insert into the lumen of the organism to establish a surgical channel, through which the occluder is pushed from outside the body to the defect site inside the organism.

[0055] Please continue reading. Figure 3 The pushing device 10 also includes a loader 11, which is used to load the occluder into the delivery sheath so that the occluder can be pushed from the delivery sheath to the target site by the push rod 12.

[0056] The loader 11 is hollow; the push rod 12 is movably inserted through the loader 11; the loader 11 is provided with a first concave-convex structure 111, and the push rod 12 is provided with a plurality of second concave-convex structures 121 arranged at intervals along its axial direction. When the push rod 12 moves toward the distal end relative to the loader 11, the plurality of second concave-convex structures 121 are sequentially engaged with the first concave-convex structure 111; the interval between the second concave-convex structures 121 corresponds to the moving distance of the plug body 20.

[0057] Specifically, the loader 11 is hollow and sleeved on the push rod 12, and the push rod 12 can move axially along the loader 11. During the process of pushing the occluder from the delivery sheath to the target location, the push rod 12 moves axially distally along the loader 11. The surface of the loader 11 that contacts the push rod 12 is provided with a first concave-convex structure 111, and the surface of the push rod 12 that contacts the loader 11 is provided with a second concave-convex structure 121. The first and second concave-convex structures 111 and 121 are fitted together. When the push rod 12 moves distally relative to the loader 11, the first concave-convex structure 111 and multiple second concave-convex structures 121 sequentially fit together, and the distance the first concave-convex structure 111 moves relative to the second concave-convex structure 121 is the same as the distance the occluder body 20 moves.

[0058] In one embodiment, there is one first concave-convex structure 111 and three second concave-convex structures 121, which are distributed along the axial direction of the push rod 12. It should be noted that this application does not limit the number of second concave-convex structures 121; for example, there can be four, five, or even more second concave-convex structures 121.

[0059] Please continue reading. Figure 1 , Figure 2 and Figure 3 The occluder body 20 is provided with a first umbrella disc 21 and a second umbrella disc 22, which are arranged sequentially from the distal end to the proximal end and connected by a waist section (not shown in the figure). When the push rod 12 moves towards the distal end relative to the loader 11 until the first concave-convex structure 111 engages with the three second concave-convex structures 121 in sequence, the occluder system experiences the following states in sequence: the occluder body 20 is in a pre-release state, the first umbrella disc 21 is fully released, and the second umbrella disc 22 is fully released. Specifically, when the push rod 12 moves towards the distal end, when it reaches the point where the first concave-convex structure 111 engages with the first second concave-convex structure 121, the occluder body 20 is at the release zero position, that is, it is about to begin releasing. When it reaches the point where the first concave-convex structure 111 engages with the second second concave-convex structure 121, the first umbrella disc 21 in the occluder body 20 is fully released. When the first concave-convex structure 111 and the third second concave-convex structure 121 are engaged, the second umbrella disc 22 in the occluder body 20 is fully released, and the occluder is fully released.

[0060] The cooperation between the first concave-convex structure 111 and the second concave-convex structure 121 enables the tactile feedback generated during the release of the plug during the movement of the push rod 12 relative to the loader 11, thereby determining the release status of the plug.

[0061] By combining the change of the auxiliary line 1 from the first state to the second state during the release of the plug and the tactile feedback generated during the movement of the push rod 12 relative to the loader 11, the operator can reliably judge the release state of the plug, thereby ensuring the plugging effect.

[0062] In other embodiments, there are multiple first concave-convex structures 111, distributed along the axial direction of the loader 11, and one second concave-convex structure 121. For example, there are three first concave-convex structures 111 and one second concave-convex structure 121, distributed axially. When the push rod 12 moves distally relative to the loader 11, when the first first concave-convex structure 111 engages with the second concave-convex structure 121, the occluder body 20 is in the release zero position, i.e., about to begin release. When the second first concave-convex structure 111 engages with the second concave-convex structure 121, the first umbrella disc 21 in the occluder body 20 is fully released. When the third first concave-convex structure 111 engages with the second concave-convex structure 121, the second umbrella disc 22 in the occluder body 20 is fully released, and the occluder is fully released.

[0063] Please see Figure 10 and Figure 11 The pushing device 10 also includes an operating member 40 (not shown), which is connected to the auxiliary line 1. By controlling the movement of the operating member 40 to a set stroke length, the auxiliary line 1 is driven to pull the limiting member 2 linearly towards the proximal end relative to the occluder body 20, thereby pulling the limiting member 2 out of the occluder body 20 to the outside of the occluder body 20, thus limiting or locking the occluder body 20. Specifically, the operating member 40 is connected to the auxiliary line 1. By controlling the movement of the operating member 40, the auxiliary line 1 is moved, and the auxiliary line 1 drives the limiting member 2 to move towards the proximal end of the occluder. Furthermore, by controlling the stroke length of the operating member 40, the stroke length of the limiting member 2 moving towards the proximal end relative to the occluder body 20 can be obtained, which can ensure the movement distance of the limiting member 2, thereby ensuring that the limiting member 2 is pulled out.

[0064] Please see Figure 10 and Figure 11This application also provides an occluder system, which includes an occluder and a pushing device 10 connected to the occluder. The pushing device 10 includes an auxiliary line 1. The occluder includes an occluder body 20 and a limiting member 2, wherein the limiting member 2 is movably connected to the occluder body 20. The auxiliary line 1 is movably connected to the limiting member 2. When the proximal end of the auxiliary line 1 is subjected to tension, the limiting member 2 moves proximally relative to the occluder body 20 until the limiting member 2 is pulled out of the occluder body 20. The pushing device 10 also includes an operating member 40, which is connected to the auxiliary line 1. By controlling the movement of the operating member 40 to a set first stroke length, the auxiliary line 1 is driven to pull the limiting member 2 linearly to the proximal end of the occluder body 20 by a second stroke length to pull the limiting member 2 out of the occluder body 20. Specifically, the operating member 40 is connected to the auxiliary line 1. By controlling the movement of the operating member 40, the auxiliary line 1 is driven to move, and the auxiliary line 1 drives the limiting member 2 to move proximally to the occluder. Furthermore, by controlling the stroke length of the operating member 40, the stroke length by which the limiting member 2 moves proximally relative to the occluder body 20 can be obtained, ensuring the movement distance of the limiting member 2 and thus ensuring that the limiting member 2 is pulled out. Specifically, by controlling the first stroke length of the operating member 40, the second stroke length of the limiting member 2 can be obtained. By controlling the operating member 40, the limiting member 2 can be pulled out, and the movement distance of the limiting member 2 can be obtained, so that the limiting member 2 is effectively pulled out, ensuring the occlusion effect of the occluder.

[0065] By controlling the first stroke length of the operating element 40, the second stroke length of the limiting element 2 can be obtained, which helps to avoid misoperation. The reliable operating procedures, the shape of the auxiliary line 1, and the relative position of the bent section 14 of the auxiliary line 1 with the guide part 123 ensure accurate release of the occluder and confirmation of its release shape, avoiding poor occlusion due to misoperation or misjudgment. It also avoids the clinical risks caused by the occluder dislodging due to misoperation or misjudgment.

[0066] Please continue reading. Figure 10 and Figure 11 The pushing device 10 also includes a handle 13 and a rotating member 30. The operating member 40 passes through the handle 13, and the rotating member 30 is sleeved on the operating member 40 and movably connected to the operating member 40 and the handle 13. The auxiliary line 1 passes through the operating member 40. When the rotating member 30 is controlled to rotate relative to the handle 13, the rotating member 30 drives the operating member 40 to move linearly, thereby driving the auxiliary line 1 to move linearly.

[0067] Specifically, during operation, after the operator controls the rotating component 30 to rotate relative to the handle 130, the rotating component 30 drives the operating component 40 to move linearly. Since the auxiliary line 1 passes through the operating component 40, the auxiliary component 1 also moves linearly in sync with the linear movement of the operating component 40.

[0068] Meanwhile, the auxiliary line 1 is detachably connected to the operating component 40. After the occluder is released, the connection between the auxiliary line 1 and the operating component 40 is released, thereby allowing the auxiliary line 1 to be withdrawn from the organism.

[0069] In one embodiment, the first stroke length is the circumference of the rotating member 30 relative to the handle 13 after the number of rotations. Specifically, the first stroke length is determined by the number of rotations of the rotating member 30 and the circumference of the handle 13, and can be calculated from the number of rotations of the rotating member 30 and the circumference of the handle 13.

[0070] In one embodiment, the outer peripheral surface of the handle 13 is provided with an external thread, and the rotating part 30 is provided with an internal thread that matches the external thread.

[0071] Please continue reading. Figure 3 The pushing device 10 also includes a pushing rod 12 and a loader 11, wherein the loader 11 is hollow; the pushing rod 12 is disposed in the loader 11; the loader 11 is provided with a first concave-convex structure 111, and the pushing rod 12 is provided with a plurality of second concave-convex structures 121 arranged at intervals along its axial direction; when the pushing rod 12 moves toward the distal end relative to the loader 11, the plurality of second concave-convex structures 121 are sequentially engaged with the first concave-convex structure 111; the interval between the second concave-convex structures 121 corresponds to the moving distance of the plug.

[0072] Specifically, the loader 11 is hollow and sleeved on the push rod 12, and the push rod 12 can move axially along the loader 11. During the process of pushing the occluder from the delivery sheath to the target location, the push rod 12 moves axially distally along the loader 11. The surface of the loader 11 that contacts the push rod 12 is provided with a first concave-convex structure 111, and the surface of the push rod 12 that contacts the loader 11 is provided with a second concave-convex structure 121. The first and second concave-convex structures 111 and 121 are fitted together. When the push rod 12 moves distally relative to the loader 11, the first concave-convex structure 111 and multiple second concave-convex structures 121 sequentially fit together, and the distance the first concave-convex structure 111 moves relative to the second concave-convex structure 121 is the same as the distance the occluder body 20 moves.

[0073] In one embodiment, there is one first concave-convex structure 111 and three second concave-convex structures 121, which are distributed along the axial direction of the push rod 12. It should be noted that this application does not limit the number of second concave-convex structures 121; for example, there can be four, five, or even more second concave-convex structures 121.

[0074] Please continue reading. Figure 1 , Figure 2 and Figure 3The occluder body 20 is provided with a first umbrella disc 21 and a second umbrella disc 22, which are arranged sequentially from the distal end to the proximal end and connected by a waist section (not shown in the figure). When the push rod 12 moves towards the distal end relative to the loader 11 until the first concave-convex structure 111 engages with the three second concave-convex structures 121 in sequence, the occluder system experiences the following states in sequence: the occluder body 20 is in a pre-release state, the first umbrella disc 21 is fully released, and the second umbrella disc 22 is fully released. Specifically, when the push rod 12 moves towards the distal end, when it reaches the point where the first concave-convex structure 111 engages with the first second concave-convex structure 121, the occluder body 20 is at the release zero position, that is, it is about to begin releasing. When it reaches the point where the first concave-convex structure 111 engages with the second second concave-convex structure 121, the first umbrella disc 21 in the occluder body 20 is fully released. When the first concave-convex structure 111 and the third second concave-convex structure 121 are engaged, the second umbrella disc 22 in the occluder body 20 is fully released, and the occluder is fully released.

[0075] The cooperation between the first concave-convex structure 111 and the second concave-convex structure 121 enables the tactile feedback generated during the release of the plug during the movement of the push rod 12 relative to the loader 11, thereby determining the release status of the plug.

[0076] By combining the change of the auxiliary line 1 from the first state to the second state during the release of the plug and the tactile feedback generated during the movement of the push rod 12 relative to the loader 11, the operator can reliably judge the release state of the plug, thereby ensuring the plugging effect.

[0077] In other embodiments, there are multiple first concave-convex structures 111, distributed axially, and one second concave-convex structure 121. For example, there are three first concave-convex structures 111 and one second concave-convex structure 121, with the three first concave-convex structures 111 distributed axially. When the push rod 12 moves distally relative to the loader 11, when the first first concave-convex structure 111 engages with the second concave-convex structure 121, the occluder body 20 is in the release zero position, i.e., about to begin release. When the second first concave-convex structure 111 engages with the second concave-convex structure 121, the first umbrella disc 21 in the occluder body 20 is fully released. When the third first concave-convex structure 111 engages with the second concave-convex structure 121, the second umbrella disc 22 in the occluder body 20 is fully released, and the occluder is fully released.

[0078] Please continue reading. Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The auxiliary line 1 has a first imaging material; during the process of the auxiliary line 1 pulling the limiting member 2 linearly moving relative to the occluder body 20 towards the proximal end, it changes from a first state to a second state different from the first state; in the first state, the limiting member 2 is located in the occluder body 20; in the second state, the limiting member 2 is pulled out of the occluder body 20.

[0079] Specifically, when the auxiliary line 1 includes the first imaging material, it facilitates observation of the auxiliary line 1 under medical imaging. During the process of the auxiliary line 1 pulling the limiting member 2, it changes from a first state to a second state, thereby allowing confirmation of whether the limiting member 2 has been pulled out through the state of the auxiliary line 1.

[0080] like Figure 1 and Figure 4 As shown, specifically, as Figure 1 As shown, when the auxiliary line 1 does not pull out the limiting member 2, the auxiliary line 1 is in a straight line, meaning that it can be observed in the first state under medical imaging. At this time, the operator can confirm that the limiting member 2 has not been pulled out. Figure 2 As shown, when the auxiliary line 1 pulls out the limiting member 2, the auxiliary line 1 is in a relaxed state, in the form of an arc or a circle, that is, the auxiliary line 1 can be observed to be in the second state under medical imaging. At this time, the operator can determine that the limiting member 2 has been pulled out, and thus determine that the occluder is in the locked radial expansion state.

[0081] Specifically, under medical imaging, if the auxiliary line 1 is observed to be in a straight line, it can be determined that the limiting member 2 is still inside the occluder body 20. Furthermore, if the bent section 14 of the auxiliary line 1 is observed to be located at the distal end of the guide portion 123 under medical imaging, it can be determined that the limiting member 2 has not yet been pulled out of the occluder body 20. Combining the shape of the auxiliary line 1 and its position relative to the guide portion 123, the position of the limiting member 2 can be determined more accurately, thereby accurately determining the release state of the occluder and avoiding misjudgment. When in Figure 6 Under these conditions, the auxiliary line 1 was pulled until it was observed in medical imaging that the auxiliary line 1 changed from... Figure 6 The linear tight state changes to Figure 2 When the device is in the arc-shaped state shown, it can be determined that the limiting member 2 has been pulled out of the plug body 20.

[0082] Furthermore, in Figure 2 In the state shown, continue pulling the auxiliary line 1. When the auxiliary line 1 is pulled into the push rod 12, as shown... Figure 7 ( Figure 7As shown in the diagram (excluding the occluder), because the push rod 12 is visible under medical imaging and the imaging extends deeper, the auxiliary line 1 disappears under medical imaging after entering the push rod 12. At this time, the auxiliary line 1 is still in the second state, confirming that the limiting member 2 has been pulled out. That is, by combining the observation that the auxiliary line 1 is in the second state and then disappears under medical imaging after further pulling, it can be more accurately confirmed that the limiting member 2 has been pulled out to the position of the occluder body 20.

[0083] like Figure 8 As shown, after the operator pulls the auxiliary line 1 until it disappears under the medical image, the operator releases or gently pulls the auxiliary line 1. If the auxiliary line 1 moves back and forth in the blank segment between the distal end of the guide part 123 and the push rod 12, it can be determined that the latch has been pulled out of the occluder body 20. At this time, the auxiliary line 1 is in the second state, and it can be confirmed that the limiting member 2 has been pulled out.

[0084] The occluder system provided in this application uses an auxiliary line 1 with a first radiopaque material. The position of the limiting member 2 is determined by the state of the auxiliary line 1 under medical imaging. Furthermore, the position of the limiting member 2 determines whether the occluder has been released to the locked radially expanded state. That is, the release state of the occluder can be determined by the auxiliary line 1 of the pushing device 10, without requiring the occluder to be visible under medical imaging to confirm its intact release. Therefore, for occluders made of biodegradable polymers, it is unnecessary to require non-degradable metal markers on the occluder to determine its morphology, which is beneficial for achieving complete degradation and zero residue of the occluder.

[0085] The occluder system provided in this application uses an auxiliary line 1 with a first radiopaque material. The position of the limiting member 2 is determined by the position of the auxiliary line 1 relative to the guide portion 123 under medical imaging. Furthermore, the position of the limiting member 2 can be used to determine whether the occluder has been released to the locked radially expanded state. Therefore, for occluders made of biodegradable polymers, it is unnecessary to require non-degradable metal markers on the occluder to determine its shape, which is beneficial for achieving complete degradation and zero residue of the occluder.

[0086] The occluder system provided in this application uses an auxiliary line 1 with a first imaging material. The position of the limiting member 2 is determined by the state of the auxiliary line 1 under medical imaging and the position of the auxiliary line 1 relative to the guide part 123 under medical imaging. This allows for accurate determination of the release state of the occluder and facilitates the complete degradation and zero residue of the occluder.

[0087] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An occluder system, characterized in that, The device includes a pushing device (10) and a blocking device connected to the pushing device (10), the pushing device (10) including an auxiliary line (1), and the blocking device including: The plugging device body (20); The limiting member (2) is connected to the blocker body (20), and the auxiliary line (1) is movably connected to the limiting member (2); When the proximal end of the auxiliary line (1) is subjected to a pulling force, the limiting member (2) moves towards the proximal end relative to the occluder body (20) until the limiting member (2) is pulled out of the occluder body (20); The auxiliary line (1) has a first developing material; As the limiting member (2) moves proximally relative to the occluder body (20) until the limiting member (2) is pulled out of the occluder body (20), the auxiliary line (1) changes from a first state to a second state different from the first state. When the auxiliary line (1) is in the first state, the limiting member (2) is located in the blocker body (20); When the auxiliary line (1) is in the second state, the limiting member (2) is pulled out of the blocker body (20).

2. The occlusion system according to claim 1, characterized in that, The pushing device (10) further includes a pushing rod (12), the distal end of which is a hollow guide part (123); The auxiliary line (1) extends from the guide (123) to the proximal end of the push rod (12); The guide portion (123) is at least partially visible; by passing through a portion of the auxiliary line (1) through the guide portion (123), it is determined whether the auxiliary line (1) is in the first state or the second state.

3. The occlusion system according to claim 2, characterized in that, The guide portion (123) is made of metal, and the guide portion (123) is provided with a plurality of windows (122), which are arranged circumferentially around the guide portion (123); Alternatively, the guide portion (123) may be made of a polymer material, and the guide portion (123) may contain at least one developing element (1231) or be doped with a second developing material.

4. The occlusion system according to claim 3, characterized in that, The push rod has a third developing material, and under medical imaging, the developing grayscale of the first developing material, the second developing material, and the third developing material are different; And / or, the grayscale of the third developer is deeper than the grayscale of the first developer.

5. The occlusion system according to claim 3, characterized in that, The guide part (123) is made of polymer material, and the guide part is provided with a plurality of imaging elements (1231) spaced apart along the axial direction. The imaging elements (1231) spaced apart have different gray levels under medical imaging equipment.

6. The occlusion system according to claim 3, characterized in that, The guide portion (123) is made of polymer material, and the guide portion is provided with a plurality of developing elements (1231) spaced apart along the axial direction. The distance between each developing element (1231) and the distal end of the guide portion (123) is 0-10 mm. Each of the developing elements (1231) has a length of 0.1-4 mm in its axial direction.

7. The occlusion system according to claim 3, characterized in that, The auxiliary line is folded in half to form a bent section line body (14). The bent section line body (14) is movably hooked with the limiting member (2), and the end of the auxiliary line (1) away from the bent section line body (14) passes through the guide part (123) and extends to the proximal end of the push rod (12). When a tensile force is applied to the auxiliary line (1) at its proximal end, the position of the bent section (14) changes from a first position to a second position different from the first position. In the first position, the bent section (14) is located at the distal end of the guide (123). In the second position, the bent section (14) is not visible under medical imaging.

8. The occlusion system according to any one of claims 2-7, characterized in that, The pushing device (10) further includes: The loader (11) is hollow, and the push rod (12) is movably inserted through the loader (11); The loader (11) is provided with a first concave-convex structure (111), and the push rod (12) is provided with a plurality of second concave-convex structures (121) arranged at intervals along its axial direction. When the push rod (12) moves to the distal end relative to the loader (11), the plurality of second concave-convex structures (121) are sequentially engaged with the first concave-convex structure (111). Alternatively, the loader (11) may have a plurality of first concave-convex structures (111) spaced apart along its axial direction, and the push rod (12) may have a second concave-convex structure (121). When the push rod (12) moves toward the distal end relative to the loader (11), the second concave-convex structure (121) may engage with the plurality of first concave-convex structures (111) in sequence.

9. The occlusion system according to claim 1, characterized in that, The pushing device (10) further includes: Operating component (40) is connected to the auxiliary line (1); By controlling the movement of the operating element (40) to a set stroke length, the auxiliary line (1) is driven to pull the limiting element (2) to move linearly towards the proximal end relative to the occluder body (20), so as to release the occluder.

10. A plugging device system, characterized in that, Includes a occluder and a pushing device (10) connected to the occluder, the pushing device (10) including an auxiliary line (1), the occluder including: The plugging device body (20); The limiting member (2) is movably connected to the occluder body (20), and the auxiliary line (1) is movably connected to the limiting member (2). When the proximal end of the auxiliary line (1) is subjected to tension, the limiting member (2) moves proximal to the occluder body (20) until the limiting member (2) is pulled out of the occluder body (20). The pushing device (10) further includes: Operating component (40) is connected to the auxiliary line (1); By controlling the movement of the operating member (40) to a set first stroke length, the auxiliary line (1) is driven to pull the limiting member (2) to move linearly to the proximal end relative to the occluder body (20) for a second stroke length so as to pull the limiting member (2) out of the occluder body (20).

11. The occluder system according to claim 10, characterized in that, The pushing device (10) also includes a handle (13) and a rotating component (30). The operating component (40) passes through the handle (13), and the rotating component (30) is sleeved on the operating component (40) and movably connected to the operating component (40) and the handle (13). The auxiliary line (1) passes through the operating component (40). When the rotating component (30) rotates relative to the handle (13), the rotating component (30) drives the operating component (40) to move linearly, thereby driving the auxiliary line (1) to move.

12. The occlusion system according to any one of claims 10-11, characterized in that, The pushing device (10) further includes: Push rod (12); The loader (11) is hollow; the push rod (12) is movably inserted through the loader (11); The loader (11) is provided with a first concave-convex structure (111), and the push rod (12) is provided with a plurality of second concave-convex structures (121) arranged at intervals along the axial direction. When the push rod (12) moves to the far end relative to the loader (11), the plurality of second concave-convex structures (121) are sequentially engaged with the first concave-convex structure (111). Alternatively, the loader (11) may have a plurality of first concave-convex structures (111) spaced apart along its axial direction, and the push rod (12) may have a second concave-convex structure (121). When the push rod (12) moves toward the distal end relative to the loader (11), the second concave-convex structure (121) may engage with the plurality of first concave-convex structures (111) in sequence.

13. The occluder system according to claim 10, characterized in that, The auxiliary line (1) has a first developing material; As the auxiliary line (1) pulls the limiting member (2) to move linearly toward the proximal end relative to the occluder body (20), it changes from a first state to a second state different from the first state. When the auxiliary line (1) is in the first state, the limiting member (2) is located in the blocker body (20); When the auxiliary line (1) is in the second state, the limiting member (2) is pulled out of the blocker.

Images