Vascular occluder

Abstract

This invention provides a vascular occlusion device, belonging to the field of interventional surgical medical device technology. The occlusion device includes an occlusion component, which has a first occlusion disc integrally woven from absorbable material, a connecting portion, and a second occlusion disc. The connecting portion is located between the first and second occlusion discs. Both the first and second occlusion discs have a contracted state and an expanded state. A fixing component is provided on the occlusion component to maintain the expanded state of the first and second occlusion discs. During operation, the occlusion component is in a contracted state with a radial dimension smaller than the radial dimension of the puncture site, and the first occlusion disc is inserted into the puncture site. Subsequently, the first and second occlusion discs expand into disc-shaped structures with a radial dimension larger than the radial dimension of the puncture site, and together seal the puncture site under the constraint of the fixing component. This invention mainly addresses the technical problems of existing vascular occlusion devices, such as the small diameter of applicable puncture sites, the risk of metal poisoning, and the impact on subsequent examinations.

Description

Technical Field

[0001] This invention belongs to the field of interventional surgical medical device technology, specifically relating to a blood vessel occlusion device. Background Technology

[0002] In interventional surgery, femoral artery puncture is the most commonly used puncture route for peripheral interventional procedures, and hemostasis at the puncture site is always a crucial aspect that cannot be ignored during the procedure. Improper handling of the puncture site can easily lead to serious complications such as hematoma, infection, and pseudoaneurysm, even endangering the patient's life. Currently, hemostasis at the puncture site mainly uses manual or mechanical compression. This method requires continuous pressure on the puncture site for approximately 25 minutes, which is not only cumbersome and consumes a great deal of energy for medical staff, but also requires the patient to remain in bed for an extended period after hemostasis, severely impacting comfort and recovery efficiency.

[0003] To address the drawbacks of traditional compression hemostasis, vascular occlusion devices have emerged on the market. Commonly used vascular occlusion devices are mainly divided into two categories: one type uses an absorbable sponge plug to assist the coagulation process by pushing it to the outside of the puncture site; the other type uses a metal clamp to directly close the puncture site. However, with the continuous development of interventional surgical techniques, the clinical demand for more complex surgeries is increasing. These surgeries often require large-diameter puncture sites of 10F or higher, leading to a sharp rise in the clinical demand for occlusion of large-diameter vascular puncture sites.

[0004] Traditional vascular occluders have significant limitations. On the one hand, absorbable sponge plugs are only suitable for arterial puncture sites of 5-7F. When the puncture site is larger than 7F or the arterial blood pressure is high, their coagulation ability is severely insufficient, requiring manual compression for hemostasis, which significantly increases surgical costs and prolongs the treatment cycle. On the other hand, metal clamps require clamping the tissue around the puncture site to block blood flow. When the puncture site is small, the wound can be quickly sealed with little impact on the patient. However, for larger puncture sites, prolonged clamping obstructs normal blood circulation, which has a greater impact on the patient's health. In addition, 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, resulting in metal poisoning. It can also affect the applicability of subsequent MRI examinations.

[0005] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0006] The purpose of this invention is to provide a vascular occlusion device to solve the technical problems of existing vascular occlusion devices having small applicable puncture site diameters, affecting normal blood circulation, posing a risk of metal poisoning, and affecting subsequent examinations.

[0007] To achieve the above objectives, the vascular occlusion device of the present invention provides the following technical solution:

[0008] A vascular occlusion device includes an occlusion component for sealing a puncture site. The occlusion component has a first occlusion disc integrally woven from absorbable material, a connecting portion, and a second occlusion disc. The connecting portion is disposed between the first and second occlusion discs. Both the first and second occlusion discs have a contracted state and an expanded state. A fixing component is provided on the occlusion component to maintain the first and second occlusion discs in the expanded state. During operation, the occlusion component is in a contracted state with a radial dimension smaller than the radial dimension of the puncture site, and the first occlusion disc is inserted into the puncture site. Subsequently, the first and second occlusion discs expand into disc-shaped structures with a radial dimension larger than the radial dimension of the puncture site, and under the limitation of the fixing component, the puncture site is sealed from both the inside and outside.

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

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

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

[0012] As a further optimized technical solution, the vascular occluder also includes a pushing part for pushing the occlusion component into the puncture site. The pushing part is located on one side of the protective sleeve and slides in 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 disposed on the seam, the connecting tube is sleeved on the outside of the pushing tube, and 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 to limit the position of the push tube on the seam.

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

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

[0017] As a further optimized technical solution, the first sealing disc and the second sealing disc are provided with sealing membranes inside and / or outside.

[0018] Beneficial Effects: This invention, through the design of a sealing component, utilizes a contraction-expansion mechanism between the first and second sealing discs to form a bidirectional, stable sealing structure from both the inside and outside of the puncture site. This design allows the occluder to adapt to various puncture site sizes, especially large-diameter puncture sites of 10F or larger. Compared to traditional absorbable sponge plugs, which suffer from insufficient coagulation capacity in large-diameter puncture sites and high arterial blood pressure conditions, this invention effectively disperses intravascular pressure, significantly enhancing the sealing effect. Furthermore, the sealing method of the two sealing discs in this invention only seals the puncture site, without affecting the normal flow of blood within the vessel, thus making it safer to use. Even in complex surgical environments, it can achieve rapid and stable hemostasis, reducing artificial pressure. The reliance on hemostasis significantly shortens surgical time, reduces surgical costs, and accelerates postoperative recovery. Furthermore, the occlusion component of this invention's vascular occluder is integrally woven from absorbable material. After completing its hemostasis function, this material gradually degrades within the body over a predetermined time period and is excreted through normal metabolism. Compared to traditional metal clamps that may cause metal ion release, tissue rejection, and metal poisoning risks with long-term retention, this invention eliminates these safety hazards and eliminates the need for a second surgery. Simultaneously, the absorbable material does not interfere with medical imaging examinations such as MRI, greatly improving the feasibility and safety of subsequent examinations and treatments, providing patients with a superior treatment experience. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the blood vessel occlusion device of the present invention;

[0021] Figure 2 This is a schematic diagram of the assembly of the occlusion component and the protective sleeve in one embodiment of the blood vessel occlusion device of the present invention;

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

[0023] Figure 4 This is a schematic diagram of the occlusion component from another perspective of one embodiment of the blood vessel occlusion device of the present invention;

[0024] Figure 5This is a schematic diagram of the assembly of the push tube and the occlusion component in one embodiment of the blood vessel occlusion device of the present invention;

[0025] Figure 6 This is a schematic diagram of the limiting lock structure of one embodiment of the blood vessel occlusion device 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 the vascular occlusion device of the present invention before entering the puncture site according to an embodiment;

[0028] Figure 9 This is a schematic diagram showing the release of the first occlusion disc in one embodiment of the vascular occlusion device of the present invention.

[0029] Figure 10 A schematic diagram illustrating the axial compression of the fixing component driving the first and second occlusion discs in one embodiment of the vascular occlusion device of the present invention;

[0030] Figure 11 This is a schematic diagram showing the first and second occlusion discs in an unfolded state, according to an embodiment of the vascular occlusion device of the present invention.

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

[0032] Figure 13 This is a schematic diagram illustrating the shapes of the first and second occlusion discs in the deployed state, according to an embodiment of the vascular occlusion device of the present invention.

[0033] In the diagram: 1. Puncture site; 2. Occlusion component; 201. First occlusion disc; 202. Connecting part; 203. Second occlusion disc; 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 Implementation

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0035] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. Furthermore, the term "proximal end" uniformly refers to the end closer to the operator, while "distal end" refers to the end farther from the operator.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0037] The shapes and sizes of the components in the accompanying drawings do not reflect the actual proportions of the product; they are only intended to illustrate the content of the invention.

[0038] This invention provides a vascular occlusion device. The core occlusion component of the device is integrally woven from absorbable material and includes a first occlusion disc, a connecting part, and a second occlusion disc. The first and second occlusion discs can be kept in an unfolded state under the action of a fixing component to seal the puncture site. During operation, the contracted occlusion component enters the puncture site. After the first occlusion disc extends into the interior, the first and second occlusion discs are axially compressed and radially unfolded into a disc-shaped unfolded state, achieving bidirectional occlusion from both the inside and outside of the puncture site. This is suitable for hemostasis of large-area puncture sites. The absorbable material of this invention avoids the risk of metal residue, is easy to operate, significantly improves surgical efficiency, and reduces postoperative complications.

[0039] Example 1

[0040] like Figure 1 As shown, the vascular occlusion device includes an occlusion component 2 for occluding the puncture site 1, a protective sleeve 5 for receiving the occlusion component 2, and a pusher for pushing the occlusion component 2 into the puncture site 1. The pusher includes a connecting tube 6, a pusher tube 7, and an operating handle 9.

[0041] Specifically, such as Figure 3 , Figure 4As shown, the occlusion component 2 is integrally woven from absorbable material. The absorbable material can be one or more of the following biodegradable metal materials: magnesium alloy, iron alloy, zinc alloy, etc.; or one or more of the following biodegradable polymer materials: polylactic acid, polyglycolic acid, polylactic-co-hydroxyacetic acid copolymer, polyhydroxyalkanoate, polydioxanone, polycaprolactone, polyamide, polyanhydride, polyphosphate, polyurethane, polycarbonate, etc. This allows the occlusion component 2 to possess both good biocompatibility and mechanical strength. After hemostasis is achieved, it can be gradually degraded and absorbed within the body, avoiding the risk of metal poisoning caused by the retention of traditional metal materials in the body, and will not interfere with subsequent medical examinations such as MRI. The occlusion component 2 specifically includes a first occlusion disc 201, a connecting part 202, and a second occlusion disc 203. The connecting part 202 is located between the first occlusion disc 201 and the second occlusion disc 203, forming a continuous and tightly integrated structure. Both the first occlusion disc 201 and the second occlusion disc 203 have two states: a retracted state and an extended state. The occlusion component 2 is equipped with a fixing component specifically designed to maintain the stability of the first occlusion disc 201 and the second occlusion disc 203 in the extended state. The connecting part 202 connects the first occlusion disc 201 and the second occlusion disc 203. During use, the connecting part 202 ensures that the first occlusion disc 201 and the second occlusion disc 203 are spaced at an appropriate distance, preventing direct clamping of the vessel sidewall and thus avoiding damage to the vessel sidewall.

[0042] In actual operation, initially, the sealing component 2 is in a contracted state with a radial dimension smaller than that of the puncture opening 1. This design facilitates the smooth insertion of the sealing component 2 into the puncture opening 1. After the first sealing disc 201 is inserted into the puncture opening 1, by operating the fixing component, the first sealing disc 201 and the second sealing disc 203 undergo further axial compressive force during automatic expansion, accelerating the unfolding speed of the two sealing discs. Furthermore, the two sealing discs ultimately unfold into disc-shaped structures with a radial dimension larger than that of the puncture opening 1. For example... Figure 13 As shown, both the first occlusion disc 201 and the second occlusion disc 203 can be released in various shapes, with a common shape being circular. However, a more suitable shape can be selected based on the specific circumstances of the puncture site 1. This allows for a bidirectional and stable occlusion effect from both the inside and outside of the puncture site 1. This occlusion method is particularly suitable for large-diameter puncture sites 1, and can effectively achieve hemostasis even in complex situations with high arterial blood pressure. It significantly reduces reliance on manual compression hemostasis, greatly improves surgical efficiency, and shortens the treatment cycle.

[0043] The fixing component of the present invention includes a suture 3 and a first limiting component 4 disposed on the suture 3. The sealing component 2 has an axial through hole 205, and the suture 3 passes through the through hole 205. One end of the suture 3 is fixedly connected to the end of the first sealing plate 201 away from the second sealing plate 203, and the other end extends axially out of the second sealing plate 203 and in a direction away from the first sealing plate 201. In this embodiment, the suture 3 is fixedly connected to the first sealing plate 201 by firstly passing through the end of the sealing component 2 at the end of the first sealing plate 201 away from the second sealing plate 203, and then passing through the end of the second sealing plate 203 away from the first sealing plate 201. Then, a knot 301 that can move along the suture 3 is tied at this position. The first limiting component 4 is located at the end of the second sealing disc 203 away from the first sealing disc 201. The first limiting component 4 adjusts the distance between the two ends of the sealing component 2 by pushing the knot 301 along the seam 3 and limiting the axial compression state of the two sealing discs along the seam 3, thereby ensuring that the sealing component 2 maintains a stable shape after unfolding.

[0044] like Figure 2 As shown, the protective sleeve 5 is used to house the occlusion component 2 in its contracted state. It is made of medical-grade polymer material and has good flexibility and rigidity. Before the surgical procedure, it can effectively protect the occlusion component 2 and prevent it from accidentally unfolding; during the surgical procedure, it can also serve as a delivery channel to facilitate the accurate delivery of the occlusion component 2 to the puncture site 1.

[0045] like Figure 2 , Figure 5 As shown, the pushing part is used to push the sealing component 2. The pushing tube 7 of the pushing part is slidably disposed on the suture 3, the connecting tube 6 is sleeved on the outside of the pushing tube 7, the protective sleeve 5 is sleeved on the outside of the connecting tube 6 and slides in cooperation with the connecting tube 6, and the operating handle 9 is located at the end of the connecting tube 6 away from the sealing component 2. The surface of the operating handle 9 can be designed with a non-slip texture, conforming to ergonomics, making it convenient for medical staff 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 fiber, or one or more absorbable materials such as sheep intestine, polyglycolic acid, lactide and glycolide polymers, glycolide and caprolactone polymers, and polydioxanone; the suture is braided in a single strand or multiple strands. Absorbable materials are preferred, so that the suture 3 does not need to be removed later in the healing process of the puncture site 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 connection method between the operating handle 9 and the connecting pipe 6 is one or more of the following: adhesive bonding, welding, Luer joint, internal and external thread connection, etc. The material of the operating handle 9 is one or more of the following: polyethylene, polypropylene, polyvinyl chloride, polyurethane, polytetrafluoroethylene, polycarbonate, polystyrene, acrylonitrile-butadiene-styrene graft copolymer, etc.

[0048] To prevent the push tube 7 from sliding freely along the seam 3, a second limiting component 8 is provided on the side of the push tube 7 away from the sealing component 2 to limit the position of the push tube 7 on the seam 3.

[0049] In this embodiment, both the first limiting component 4 and the second limiting component 8 are limiting latches, such as... Figure 6 , Figure 7 As shown, the limiting lock is a short tubular structure with radial contraction in the middle of its inner cavity, allowing for an interference fit with the suture 3. When the force driving the limiting lock is greater than the friction between the limiting lock and the suture 3, it can move along the suture 3. During normal sealing, the expansion force at both ends of the sealing component 2 is less than the friction between the limiting lock and the suture 3, thus maintaining the sealing state of the sealing component 2. Furthermore, the radial dimension of the limiting lock is larger than the radial dimension of the push tube 7, which is positioned between the first limiting component 4 and the second limiting component 8, thus limiting the push tube 7. In other words, the two limiting locks cooperate to ensure the stability of the suture 3 during operation and maintain the stable state of the sealing component 2 after unfolding and fixing.

[0050] Furthermore, a soft and elastic coagulation aid component 204 is provided in the inner cavity of the connecting part 202. In this embodiment, the coagulation aid component 204 can be a blood-absorbing sponge to quickly absorb blood and tissue exudate, assisting in coagulation. The blood-absorbing sponge is made of 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-absorbing sponge is prepared using one or more methods such as 3D printing, freeze-thaw process, microfiber aggregation, fiber bonding and entanglement, freeze drying, salt elution, gas foaming, phase separation, emulsion freeze drying, and particle sintering. In other embodiments, the coagulation aid component 204 can also be a hemostatic gel, biodegradable hemostatic gauze, hemostatic powder, or other hemostatic components. When the sealing component 2 unfolds and comes into contact with blood, the coagulation assist component 204 can quickly absorb blood and accelerate the coagulation process. This, combined with the physical sealing effect of the first sealing plate 201 and the second sealing plate 203, further improves the hemostasis efficiency.

[0051] Furthermore, an occlusion membrane (not shown in the figure) is disposed inside and / or outside the first occlusion disc 201 and the second occlusion disc 203. This occlusion membrane is made of an ultra-thin, highly elastic material with good biocompatibility, and its surface is specially treated to have excellent blood barrier properties. The occlusion membrane can further enhance the occlusion effect, effectively prevent blood leakage, and improve the reliability of hemostasis.

[0052] Specifically, during the surgical procedure, after the vascular puncture is completed, such as Figure 8 As shown, the medical staff holds the operating handle 9 with their right hand and supports the protective cannula 5 with their left hand, slowly pushing the protective cannula 5 along with the sealing component 2 to the puncture site 1 through the pushing part. Figure 9 As shown, the first occlusion disc 201 is pushed into the puncture site 1. During the pushing process, the first occlusion disc 201 gradually recovers to a certain degree of openness due to the shape memory effect. After the first occlusion disc 201 is pushed into place, the left hand pulls back the protective sleeve 5 until the first occlusion disc 201 is completely exposed, and then the right hand holds the operating handle 9 and slowly pulls it back (in this embodiment, the end of the suture 3 away from the occlusion component 2 is fixedly connected to the connecting tube 6 or the operating handle 9, so pulling the operating handle 9 back will further axially compress the first occlusion disc 201 through the suture 3, so that the first occlusion disc 201 unfolds more fully), so that the side of the first occlusion disc 201 facing the puncture site 1 completely adheres to the inner wall of the blood vessel until a significant reduction in blood flow is observed after puncture, confirming that the occlusion is in place.

[0053] After that, as Figure 10As shown, the medical staff holds the operating handle 9 with their right hand, keeping it relatively still, ensuring the first occlusion disc 201 is fully open and disc-shaped. They continue to use their left hand to hold the protective sheath 5 and retract it to the middle and rear section of the connecting tube 6. Then, they operate the push tube 7 until the front end is fully exposed and stop retraction. The right hand tightens the operating handle 9, and the left hand holds the tip of the push tube 7, pushing the second occlusion disc 203 towards the occlusion component 2, pushing the first limiting component 4 to the bottom of the second occlusion disc 203. They continue pushing until the second occlusion disc 203 is fully open and disc-shaped, until it completely adheres to the outer side of the blood vessel. Figure 11 As shown, once the closure effect is confirmed to be good and bleeding at the puncture site has stopped, medical staff can trim excess sutures 3 as needed and finally lock the first limiting component 4 to ensure the closure component 2 remains stable during postoperative recovery, thus completing the closure. Figure 12 The diagram shown is a schematic of the structure after the sealing is completed.

[0054] Because the sealing component 2 is made of absorbable material, it will gradually degrade and be absorbed by the body over a period of time after the hemostasis function is completed, eliminating the need for surgical removal. This effectively reduces patient pain and infection risk, and accelerates the patient's postoperative recovery process.

[0055] The vascular occlusion device provided by this invention, through its unique structural design and functional configuration, effectively solves many problems in the prior art and has promising clinical application prospects. It is understood that the above description is merely exemplary, and the embodiments of this application do not limit its scope.

[0056] The above are merely 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 occlusion device, comprising: The device includes a sealing component (2) for sealing the puncture site (1). The sealing component (2) has a first sealing disc (201) integrally woven from absorbable material, a connecting part (202), and a second sealing disc (203). The connecting part (202) is disposed between the first sealing disc (201) and the second sealing disc (203). Both the first sealing disc (201) and the second sealing disc (203) have a contracted state and an expanded state. The sealing component (2) is provided with a fixing component for maintaining... The first sealing disc (201) and the second sealing disc (203) are in the unfolded state; during operation, the sealing component (2) is in the contracted state with a radial dimension smaller than that of the puncture opening (1), and the first sealing disc (201) is inserted into the puncture opening (1); subsequently, the first sealing disc (201) and the second sealing disc (203) unfold into disc-shaped structures with a radial dimension larger than that of the puncture opening (1), and under the limitation of the fixing component, the puncture opening (1) is jointly sealed from the inside and outside of the puncture opening (1).

2. The vascular occluder of claim 1, wherein, A soft and elastic coagulation aid component (204) is provided in the inner cavity of the connecting part (202).

3. The vascular occluder of claim 1, wherein, The fixing component includes a suture (3) and a first limiting component (4) disposed on the suture (3). One end of the suture (3) is fixedly connected to the end of the first sealing plate (201) away from the second sealing plate (203), and the other end extends axially out of the second sealing plate (203) and in a direction away from the first sealing plate (201). The first limiting component (4) is disposed at the end of the second sealing plate (203) away from the first sealing plate (201) and is used to press the second sealing plate (203).

4. The vascular occluder of claim 3, wherein, The vascular occluder also includes a protective sleeve (5) for housing the occlusion component (2) in the contracted state.

5. The vaso-occlusive device of claim 4, wherein the first and second portions are configured to be coupled together by a coupling member. The vascular occluder also includes a pusher for pushing the occlusion component (2) into the puncture port (1), the pusher being disposed on one side of the protective sleeve (5) and slidingly engaging with the protective sleeve (5).

6. The vascular occlusion device according to claim 5, characterized in that, The pushing part includes a connecting tube (6) and a pushing tube (7). The pushing tube (7) is slidably disposed on the seam (3). The connecting tube (6) is sleeved on the outside of the pushing tube (7). The protective sleeve (5) is sleeved on the outside of the connecting tube (6).

7. The vascular occlusion device 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 sealing component (2) to limit the position of the push tube (7) on the suture (3).

8. The vaso-occlusive device of claim 7, wherein, Both the first limiting component (4) and the second limiting component (8) are limiting latches.

9. The vascular occlusion device according to claim 6, characterized in that, An operating handle (9) is fixedly installed at the end of the connecting pipe (6) away from the sealing component (2).

10. The vaso-occlusive device of any of claims 1-9, wherein, The first sealing disc (201) and the second sealing disc (203) are provided with sealing membranes inside and / or outside.

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