Blood vessel plugging device

Abstract

The invention provides a blood vessel plugging device, and belongs to the technical field of interventional operation medical instruments. The plugging device comprises a plugging part, the plugging part is provided with a first plugging disc, a connecting part and a second plugging disc which are integrally formed by weaving absorbable materials, the connecting part is arranged between the first plugging disc and the second plugging disc, the first plugging disc and the second plugging disc both have a contracted state and an unfolded state, and a fixing part is arranged on the plugging part. The first plugging disc and the second plugging disc are in an unfolded state; during working, the plugging component is in a contraction state that the radial size is smaller than the radial size of the puncture port, and the first plugging disc extends into the puncture port; then, the first plugging disc and the second plugging disc are unfolded to form a disc-shaped structure with the radial size larger than that of the puncture opening, and the first plugging disc and the second plugging disc jointly plug the puncture opening under limiting of the fixing component; the technical problems that in the prior art, an applicable puncture opening of a blood vessel plugging device is small in caliber, metal poisoning risks exist, and follow-up inspection is affected are mainly solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of interventional surgery medical devices, and particularly relates to a blood vessel occluder. Background Art

[0002] In the field of interventional surgery, femoral artery puncture is the most commonly used puncture route for peripheral interventional surgery, and the problem of hemostasis at the puncture site has always been an important link that cannot be ignored during the operation. If the puncture site is not handled properly, it is very easy to cause serious complications such as hematoma, infection, and pseudoaneurysm after the operation, and may even endanger the patient's life. At present, hemostasis at the puncture site mainly adopts manual or mechanical compression method, which requires continuous pressing on the puncture site for about 25 minutes. Not only is the operation process cumbersome and consumes a lot of energy of medical staff, but the patient also needs to stay in bed for a long time after the hemostasis, which seriously affects the comfort and recovery efficiency.

[0003] To address the drawbacks of traditional compression hemostasis, vascular occluders have emerged on the market. Commonly used vascular occluders are divided into two main categories: one that pushes an absorbable sponge plug outside the puncture site to assist in the coagulation process; the other that directly seals the puncture site with a metal closure clamp. However, with the continuous advancement of interventional surgical techniques, the clinical demand for more complex surgeries is increasing. Such surgeries often require large-caliber puncture sites larger than 10F, which has led to a sharp increase in the clinical demand for large-caliber vascular puncture site occlusion.

[0004] Traditional vascular occluders have significant limitations. For one thing, absorbable sponge plugs are only suitable for arterial punctures of 5-7 French (F) in diameter. When the puncture is larger than 7 French (F) or when arterial blood pressure is high, their coagulation capacity is severely insufficient, requiring manual compression to stop bleeding, significantly increasing surgical costs and prolonging the treatment cycle. Furthermore, metal closure clamps require clamping the tissue surrounding the puncture to block blood flow. While small punctures can be quickly sealed with minimal impact on the patient, prolonged clamping for larger punctures can hinder normal blood circulation and pose a significant health risk. Furthermore, due to their high metal content, they cannot be degraded in the human body. Long-term retention can easily lead to the release of harmful metal ions, potentially causing metal poisoning in the human body. This can also affect the patient's suitability for subsequent MRI examinations.

[0005] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to provide a vascular occluder to solve the technical problems in the prior art of vascular occluders, such as small puncture port diameter, affecting normal blood circulation, posing a risk of metal poisoning and affecting subsequent examinations.

[0007] In order to achieve the above objectives, the vascular occluder of the present invention provides the following technical solutions:

[0008] A vascular occluder includes a sealing component for sealing a puncture port, the sealing component comprising a first occluding disk, a connecting portion and a second occluding disk integrally woven from an absorbable material, the connecting portion being arranged between the first occluding disk and the second occluding disk, the first occluding disk and the second occluding disk both having a contracted state and an expanded state, the occluding component being provided with a fixing component for maintaining the expanded state of the first occluding disk and the second occluding disk; when in operation, the occluding component is in a contracted state in which its radial dimension is smaller than that of the puncture port, and the first occluding disk is extended into the interior of the puncture port; subsequently, the first occluding disk and the second occluding disk are respectively expanded into disc-shaped structures in which their radial dimension is larger than that of the puncture port, and the puncture port is jointly sealed from the inside and outside of the puncture port under the limitation of the fixing component.

[0009] As a further optimized technical solution, a soft and elastic coagulation auxiliary component is provided in the inner cavity of the connecting portion.

[0010] As a further optimized technical solution, the fixing component includes a suture and a first limiting component arranged on the suture. One end of the suture is fixedly connected to the end of the first occluding disk away from the second occluding disk, and the other end passes through the second occluding disk axially and extends in a direction away from the first occluding disk. The first limiting component is arranged at the end of the second occluding disk away from the first occluding disk, and is used to press the second occluding disk.

[0011] As a further optimized technical solution, the vascular occluder further includes a protective sleeve for accommodating the occluding component in a contracted state.

[0012] As a further optimized technical solution, the vascular occluder further includes a pushing portion for pushing the occluding component into the puncture hole. The pushing portion is provided on one side of the protective sleeve and is in sliding cooperation with the protective sleeve.

[0013] As a further optimized technical solution, the pushing part includes a connecting tube and a pushing tube. The pushing tube is slidably arranged on the suture. The connecting tube is sleeved on the outside of the pushing tube. The protective sleeve is sleeved on the outside of the connecting tube.

[0014] As a further optimized technical solution, a second limiting component is provided on the side of the push tube away from the blocking component, for limiting the position of the push tube on the suture.

[0015] As a further optimized technical solution, the first limiting component and the second limiting component are both limiting locks.

[0016] As a further optimized technical solution, an operating handle is fixedly provided at one end of the connecting tube away from the blocking component.

[0017] As a further optimized technical solution, a sealing membrane is provided inside and / or outside the first sealing disk and the second sealing disk.

[0018] Beneficial effects: The present invention sets a sealing component, and the first sealing disk and the second sealing disk of the sealing component can form a bidirectional stable sealing structure from the inside and outside of the puncture port through a contraction-expansion mechanism. This design allows the occluder to adapt to puncture ports of various sizes, especially for large-diameter puncture ports above 10F. Compared with the problem of insufficient coagulation ability of traditional absorbable sponge plug occluders in large-diameter puncture ports and high arterial blood pressure, the present invention can effectively disperse the pressure in the blood vessels and significantly enhance the sealing effect. Moreover, the sealing method of the two sealing disks of the present invention only blocks the puncture port, and does not affect the normal circulation of blood in the blood vessels. Therefore, it is safer in use, and can quickly and stably achieve hemostasis even in complex surgical environments, reducing the need for artificial compression. The vascular occluder of the present invention is an integrally woven component of an absorbable material. After completing the vascular occlusion and hemostasis function, the material can gradually degrade in the human body according to a predetermined time period and be excreted through the body's normal metabolism. Compared with the risk of metal ion release, tissue rejection, and metal poisoning that may be caused by long-term retention of traditional metal closure clips in the body, the present invention eliminates such safety hazards and does not require a secondary surgery for removal. At the same time, the absorbable material will not interfere with medical imaging examinations such as magnetic resonance imaging, greatly improving the feasibility and safety of patients' subsequent related examinations and treatments, and providing patients with a better treatment experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings and the accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the vascular occluder of the present invention;

[0021] Figure 2 This is a schematic diagram of the assembly of the occluding component and the protective sleeve of an embodiment of the vascular occluder of the present invention;

[0022] Figure 3 This is a schematic structural diagram of a closure component of an embodiment of a vascular occluder of the present invention from one perspective;

[0023] Figure 4 A schematic structural diagram of a closure component of an embodiment of a vascular occluder of the present invention from another perspective;

[0024] Figure 5This is a schematic diagram of the assembly of a push tube and a closure component of an embodiment of a vascular occluder of the present invention;

[0025] Figure 6 This is a schematic diagram of the position-limiting lock structure of an embodiment of the vascular occluder of the present invention;

[0026] Figure 7 for Figure 6 Schematic cross-sectional view along the AA direction;

[0027] Figure 8 This is a schematic diagram of the working state of an embodiment of the vascular occluder of the present invention before entering the puncture port;

[0028] Figure 9 This is a schematic diagram of releasing the first occluding disc of an embodiment of the vascular occluder of the present invention;

[0029] Figure 10 This is a schematic diagram of a fixing component driving the first occluding disc and the second occluding disc to be compressed axially according to an embodiment of the vascular occluder of the present invention;

[0030] Figure 11 This is a schematic diagram of a first occluding disc and a second occluding disc of an embodiment of a vascular occluder of the present invention both in an expanded state;

[0031] Figure 12 This is a schematic diagram of the occlusion state of an embodiment of the vascular occluder of the present invention;

[0032] Figure 13 Schematic diagram illustrating the shapes of the first occluding disc and the second occluding disc in the expanded state of an embodiment of the vascular occluder of the present invention.

[0033] In the figure: 1. Puncture port; 2. Sealing component; 201. First sealing disk; 202. Connecting part; 203. Second sealing disk; 204. Coagulation auxiliary component; 205. Perforation; 3. Suture; 301. Knot; 4. First limiting component; 5. Protective sleeve; 6. Connecting tube; 7. Push tube; 8. Second limiting component; 9. Operating handle. DETAILED DESCRIPTION

[0034] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0035] In the description of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In addition, the term "proximal end" refers to the end close to the operator, and "distal end" refers to the end away from the operator.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0037] The shapes and sizes of the components in the drawings do not reflect the actual proportions of the products, and are only intended to illustrate the contents of the present invention.

[0038] The present invention provides a vascular occluder. The core occluding component of the device is integrally woven from an absorbable material and comprises a first occluding disc, a connecting portion, and a second occluding disc. The first and second occluding discs can be maintained in an expanded state by a fixing member to seal the puncture site. During operation, the contracted occluding component enters the puncture site. After the first occluding disc is inserted, the first and second occluding discs are axially compressed and radially expanded into a disc-shaped expanded state, achieving bidirectional occlusion from both inside and outside the puncture site. This device is suitable for hemostasis of a wide range of puncture sites. The absorbable material of the present invention avoids the risk of metal retention, facilitates operation, significantly improves surgical efficiency, and reduces postoperative complications.

[0039] Example 1

[0040] like Figure 1 As shown, the vascular occluder includes a sealing component 2 for sealing the puncture port 1, a protective sleeve 5 for accommodating the sealing component 2, and a pushing portion for pushing the sealing component 2 into the puncture port 1, wherein the pushing portion includes a connecting tube 6, a pushing tube 7 and an operating handle 9.

[0041] Specifically, if Figure 3 、 Figure 4As shown, the blocking component 2 is formed by weaving an absorbable material into a single piece. The absorbable material can be one or more degradable metal materials such as magnesium alloy, iron alloy, zinc alloy, etc.; or one or more biodegradable polymer materials such as polylactic acid, polyglycolic acid, polylactic acid-glycolic acid copolymer, polyhydroxyalkanoate, polydioxanone, polycaprolactone, polyamide, polyanhydride, polyphosphate, polyurethane, polycarbonate, etc. This allows the blocking component 2 to have both good biocompatibility and mechanical strength. After completing the hemostatic action, it can be gradually degraded and absorbed in the human body, avoiding the risk of metal poisoning caused by the retention of traditional metal materials in the body, and will not interfere with the patient's subsequent medical examinations such as nuclear magnetic resonance. The blocking component 2 specifically includes a first blocking disc 201, a connecting portion 202 and a second blocking disc 203. The connecting portion 202 is arranged between the first blocking disc 201 and the second blocking disc 203, and the three form a coherent and tight overall structure. Both the first occluding disc 201 and the second occluding disc 203 have two configurations: a contracted state and an expanded state. The occluding component 2 is provided with a fixing member specifically for maintaining the stability of the first and second occluding discs 201, 203 in the expanded state. A connecting portion 202 connects the first and second occluding discs 201, 203. During use, the connecting portion 202 maintains an appropriate spacing between the first and second occluding discs 201, 203, preventing them from directly clamping and damaging the vessel sidewalls.

[0042] In actual operation, in the initial state, the blocking component 2 is in a contracted state with a radial dimension smaller than that of the puncture port 1. This design facilitates the smooth insertion of the blocking component 2 into the puncture port 1. After the first blocking disc 201 is inserted into the puncture port 1, the fixing component is operated to further subject the first blocking disc 201 and the second blocking disc 203 to axial compression during their automatic expansion process, which accelerates the deployment speed of the two blocking discs. In addition, the two blocking discs are eventually deployed into disc-shaped structures with radial dimensions larger than those of the puncture port 1. Figure 13 As shown, the first occluding disc 201 and the second occluding disc 203 can have various shapes in their released states, most commonly circular, but a more suitable shape can be selected based on the actual situation of the puncture site 1. This can achieve a bidirectional, stable occlusion effect from both the inside and outside of the puncture site 1. This occlusion method is particularly suitable for large-caliber puncture sites 1. Even in complex situations with high arterial blood pressure, it can effectively achieve hemostasis, significantly reducing reliance on manual compression hemostasis, greatly improving surgical efficiency, and shortening the treatment cycle.

[0043] The fixing component of the present invention includes a suture 3 and a first limiting component 4 provided on the suture 3. The blocking component 2 has a through-hole 205 in the axial direction, and the suture 3 is passed through the through-hole 205, wherein one end of the suture 3 is fixedly connected to the end of the first blocking disk 201 away from the second blocking disk 203, and the other end axially passes through the second blocking disk 203 and extends in a direction away from the first blocking disk 201. In this embodiment, the suture 3 is fixedly connected to the first blocking disk 201 in the following manner: first, the suture 3 at the end of the blocking component 2 is passed through the end of the first blocking disk 201 away from the second blocking disk 203, and then passed through the end of the second blocking disk 203 away from the first blocking disk 201, and then a knot 301 that can move along the suture 3 is tied at this position. The first limiting component 4 is arranged at one end of the second sealing disk 203 away from the first sealing disk 201. The first limiting component 4 pushes the knot 301 along the suture 3 to adjust the distance between the two ends of the sealing component 2 and limits the axial compression state of the two sealing disks along the suture 3, thereby ensuring that the sealing component 2 maintains a stable shape after deployment.

[0044] like Figure 2 As shown, the protective sleeve 5 is used to house the retracted occluding member 2. Made of a medical-grade polymer material, it exhibits excellent flexibility and rigidity. Before surgery, it effectively protects the occluding member 2 from accidental deployment. During surgery, it also serves as a delivery channel, facilitating accurate delivery of the occluding member 2 to the puncture site 1.

[0045] like Figure 2 、 Figure 5 As shown, the pushing unit is used to push the occluding component 2. A pushing tube 7 of the pushing unit is slidably mounted on the suture 3. A connecting tube 6 is sleeved outside the pushing tube 7. A protective sleeve 5 is sleeved outside the connecting tube 6 and slidably engages with the connecting tube 6. An operating handle 9 is provided at the end of the connecting tube 6 away from the occluding component 2. The surface of the operating handle 9 can be designed with a non-slip texture, which is ergonomic and convenient for medical personnel to hold and operate.

[0046] In this embodiment, the suture 3 is made of one or more non-absorbable materials such as silk, nylon, polypropylene, and polyester, or one or more absorbable materials such as goat intestine, polyglycolic acid, lactide-glycolide polymer, glycolide-caprolactone polymer, and polydioxanone; the suture braid is single-strand or multi-strand. Preferably, an absorbable material is used so that the suture 3 does not need to be removed during the later stages of the healing of the puncture wound 1. The connecting tube 6 is made of one or more materials such as polyethylene, polypropylene, polyvinyl chloride, polyurethane, polytetrafluoroethylene, polycarbonate, polystyrene, and acrylonitrile-butadiene-styrene graft copolymer. The propulsion tube is made of one or more materials such as polyethylene, polypropylene, polyvinyl chloride, polyurethane, polytetrafluoroethylene, polycarbonate, polystyrene, and acrylonitrile-butadiene-styrene graft copolymer.

[0047] The operating handle 9 is connected to the connecting tube 6 by one or more of gluing, welding, a Luer joint, and a male-female thread connection. The operating handle 9 is made of one or more of polyethylene, polypropylene, polyvinyl chloride, polyurethane, polytetrafluoroethylene, polycarbonate, polystyrene, and acrylonitrile-butadiene-styrene graft copolymer.

[0048] In order to prevent the pushing tube 7 from sliding along the suture 3 at will, a second limiting component 8 is provided on the side of the pushing tube 7 away from the blocking component 2 to limit the position of the pushing tube 7 on the suture 3.

[0049] In this embodiment, the first limiting component 4 and the second limiting component 8 are both limiting locks. Figure 6 、 Figure 7 As shown, the retaining buckle is a short tubular structure with a radially contracted central portion of its inner lumen, creating an interference fit with the suture 3. When the force actuating the retaining buckle exceeds the friction between the retaining buckle and the suture 3, movement along the suture 3 is achieved. During normal occlusion, the expansion force at both ends of the occluding component 2 is less than the friction between the retaining buckle and the suture 3, thereby maintaining the occluding state of the occluding component 2. Furthermore, the radial dimension of the retaining buckle is greater than that of the push tube 7, which is positioned between the first retaining component 4 and the second retaining component 8, thereby limiting the position of the push tube 7. In other words, the two retaining buckles cooperate to ensure the stability of the suture 3 during operation and maintain the stable state of the occluding component 2 after deployment and fixation.

[0050] Furthermore, a soft and elastic coagulation assisting component 204 is disposed within the inner cavity of the connecting portion 202. In this embodiment, the coagulation assisting component 204 can be a blood-sucking sponge to rapidly absorb blood and tissue exudate to assist in coagulation. The blood-sucking sponge is made from one or more absorbable materials such as chitosan, cellulose, gelatin, starch, graphene oxide, hyaluronic acid, alginate, polyethylene glycol, silk fibroin, mesoporous silica nanoparticles, and silica nanoparticles. The blood-sucking sponge is prepared using one or more methods such as 3D printing, freeze-thaw, microfiber aggregation, fiber bonding and winding, freeze-drying, salt elution, gas foaming, phase separation, emulsion freeze-drying, and particle sintering. In other embodiments, the coagulation assisting component 204 can also be a hemostatic component such as a hemostatic gel, a degradable hemostatic gauze, or a hemostatic powder. When the blocking component 2 is unfolded and comes into contact with blood, the coagulation auxiliary component 204 can quickly absorb blood and accelerate the coagulation process, cooperating with the physical blocking effects of the first blocking disk 201 and the second blocking disk 203 to further improve the hemostasis efficiency.

[0051] Furthermore, a sealing membrane (not shown) is disposed inside and / or outside the first and second sealing discs 201 and 203. This membrane is made of an ultrathin, highly elastic, and biocompatible material, and its surface has been specially treated to provide excellent blood barrier properties. This membrane further enhances the sealing effect, effectively preventing blood leakage and improving the reliability of hemostasis.

[0052] Specifically during the operation, after the vascular puncture operation is completed, Figure 8 As shown, the medical staff holds the operating handle 9 in the right hand and supports the protective sleeve 5 with the left hand, and slowly pushes the protective sleeve 5 together with the blocking component 2 to the puncture port 1 through the pushing part. Figure 9 As shown, the first occluding disk 201 is pushed into the inside of the puncture port 1. During the pushing process, the first occluding disk 201 gradually recovers to a certain degree of open state as the shape memory effect occurs. After the first occluding disk 201 is pushed into place, the left hand retracts the protective sleeve 5 until the first occluding disk 201 is completely leaked out, and then the right hand holds the operating handle 9 and slowly retracts it backward (in this embodiment, the end of the suture 3 away from the occluding component 2 is fixedly connected to the connecting tube 6 or the operating handle 9. Therefore, retracting the operating handle 9 backward will further axially compress the first occluding disk 201 through the suture 3, so that the first occluding disk 201 is more fully expanded), so that the opened first occluding disk 201 is completely in contact with the inner wall of the blood vessel toward the side of the puncture port 1, until the blood flow is significantly reduced after the puncture, and the occlusion is confirmed to be in place.

[0053] Afterwards, if Figure 10As shown, the medical staff holds the operating handle 9 with their right hand and remains relatively still, keeping the first occluding disk 201 fully open and in a disc shape, and continues to hold the protective sleeve 5 with their left hand and withdraw it to the middle and rear section of the connecting tube 6, and then operates the front end of the pushing tube 7 to fully expose it and stop withdrawing. Pull the operating handle 9 with the right hand, hold the head end of the pushing tube 7 with the left hand and push the second occluding disk 203 toward the occluding component 2, push the first limiting component 4 to the bottom of the second occluding disk 203, and continue to push it until the second occluding disk 203 is fully opened and in a disc shape, until it completely fits the outside of the blood vessel. Figure 11 As shown, when the occlusion effect is confirmed to be good and the puncture site is no longer bleeding, the medical staff can trim the excess suture 3 according to the actual situation and finally lock the first limiting component 4 to ensure that the occlusion component 2 remains stable during the postoperative recovery process and complete the occlusion. Figure 12 The diagram shown is a schematic diagram of the structure after the plugging is completed.

[0054] Since the blocking component 2 is made of absorbable material, it will gradually degrade and be absorbed in the human body within a period of time after completing the hemostatic function, and there is no need for another surgery to remove it, which effectively reduces the patient's pain and infection risk and speeds up the patient's postoperative recovery process.

[0055] The vascular occluder provided by the present invention effectively solves many problems in the prior art through its unique structural design and functional configuration, and has a good clinical application prospect. It is understood that the above description is only exemplary and the embodiments of this application are not limited thereto.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A vascular occluder, characterized in that: The invention comprises a blocking component (2) for blocking a puncture port (1), wherein the blocking component (2) comprises a first blocking disc (201), a connecting portion (202) and a second blocking disc (203) which are integrally woven from an absorbable material, wherein the connecting portion (202) is arranged between the first blocking disc (201) and the second blocking disc (203), wherein the first blocking disc (201) and the second blocking disc (203) both have a contracted state and an expanded state, and wherein a fixing component is arranged on the blocking component (2) for maintaining The first occluding disc (201) and the second occluding disc (203) are in an expanded state; when in operation, the occluding component (2) is in a contracted state with a radial dimension smaller than the radial dimension of the puncture opening (1), and the first occluding disc (201) is extended into the interior of the puncture opening (1); then, the first occluding disc (201) and the second occluding disc (203) are respectively expanded into disc-shaped structures with radial dimensions larger than the radial dimension of the puncture opening (1), and the puncture opening (1) is jointly sealed from the inside and outside of the puncture opening (1) under the limitation of the fixing component.

2. The vascular occluder according to claim 1, characterized in that: A soft and elastic blood coagulation auxiliary component (204) is provided in the inner cavity of the connecting portion (202).

3. The vascular occluder according to claim 1, characterized in that: The fixing component comprises a suture (3) and a first limiting component (4) arranged on the suture (3); one end of the suture (3) is fixedly connected to an end of the first occluding disk (201) away from the second occluding disk (203); the other end axially passes through the second occluding disk (203) and extends in a direction away from the first occluding disk (201); the first limiting component (4) is arranged at an end of the second occluding disk (203) away from the first occluding disk (201) and is used to press the second occluding disk (203).

4. The vascular occluder according to claim 3, characterized in that: The blood vessel occluder further comprises a protective sleeve (5) for accommodating the occluding component (2) in a contracted state.

5. The vascular occluder according to claim 4, characterized in that: The blood vessel occluder further comprises a pushing portion for pushing the blocking component (2) into the puncture port (1); the pushing portion is arranged on one side of the protective sleeve (5) and is in sliding engagement with the protective sleeve (5).

6. The vascular occluder according to claim 5, characterized in that: The pushing portion comprises a connecting tube (6) and a pushing tube (7); the pushing tube (7) is slidably arranged on the suture (3); the connecting tube (6) is sleeved on the outside of the pushing tube (7); and the protective sleeve (5) is sleeved on the outside of the connecting tube (6).

7. The vascular occluder according to claim 6, characterized in that: A second limiting component (8) is provided on the side of the push tube (7) away from the blocking component (2) for limiting the position of the push tube (7) on the suture (3).

8. The vascular occluder according to claim 7, characterized in that: The first limiting component (4) and the second limiting component (8) are both limiting locks.

9. The vascular occluder according to claim 6, characterized in that: An operating handle (9) is fixedly provided on one end of the connecting pipe (6) away from the blocking component (2).

10. The vascular occluder according to any one of claims 1 to 9, characterized in that: Sealing membranes are provided inside and / or outside the first sealing disk (201) and the second sealing disk (203).

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