Blood vessel plugging device

Abstract

The invention provides a blood vessel occluder, and belongs to the technical field of interventional surgical instruments.The occluder comprises an occluding inner disc, an occluding outer disc, a containing component and a driving component, the occluding inner disc and the occluding outer disc are connected in a spaced mode and are each provided with a supporting framework capable of being expanded or contracted in the radial direction, and the supporting frameworks are made of absorbable materials; the plugging inner disc is expanded to plug the inner side of the puncture opening after entering the puncture opening in a contraction state, and the plugging outer disc is expanded to plug the outer side of the puncture opening; the accommodating part is used for accommodating hemostatic gel; the driving part is used for reducing the volume of the accommodating part so as to push the hemostatic gel between the plugging inner disc and the plugging outer disc; the technical problems that in the prior art, a blood vessel plugging device is narrow in puncture port application range, limited in hemostatic effect and incapable of being attached to a puncture port, and follow-up inspection is affected due to metal residues are mainly solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of interventional surgical instruments, and particularly relates to a vascular occluder. Background Art

[0002] As a minimally invasive surgical method, interventional surgery is guided by medical imaging devices (such as X-rays, ultrasounds, CTs, MRIs, etc.). By inserting special catheters, guide wires and other instruments through human blood vessels or natural body cavities into the diseased parts of the body, diagnosis and treatment can be achieved. Compared with traditional surgical operations, interventional surgery only requires a small incision on the skin or operates through natural body cavities of the human body. Because of its small damage to the body and fast postoperative recovery, it has been widely promoted.

[0003] Transfemoral artery puncture is the main puncture route for peripheral interventional surgery, but the hemostasis problem at the puncture site cannot be ignored in interventional surgery. If not properly handled, postoperative complications such as hematoma, infection, pseudoaneurysm, etc. are likely to occur, and in severe cases, it may even endanger the life of the patient. At present, manual or mechanical compression methods are often used for hemostasis at the puncture site. However, such methods require continuous pressing on the puncture site for about 25 minutes, which not only brings inconvenience to medical staff, consumes a lot of time and energy, but also the patient needs to stay in bed for a long time after hemostasis. To solve this clinical problem, vascular occluders have emerged.

[0004] For commonly used vascular occluders, some push absorbable sponge plugs to the outside of the puncture point to assist coagulation, and some close the puncture opening with metal clips. These vascular occluders are simple and rapid in operation, greatly shortening the operation time and effectively reducing the incidence of bleeding complications. However, traditional vascular occluders have many limitations. First, due to the limited degree of compression of the sponge plug, poor radial ductility and poor shaping ability after radial extension, it is only applicable to arterial puncture openings of 5-7F. Second, the coagulation ability of the sponge plug outside the puncture point is limited and it cannot adhere to the puncture opening. When the puncture opening is larger than 7F or the arterial blood pressure is relatively high, the blood vessel opening cannot be closed only by the sponge plug, and subsequent manual compression hemostasis is still required, which undoubtedly greatly increases the operation cost and prolongs the treatment cycle. In addition, although the traditional metal clip has a better blood vessel closing effect than the sponge plug, it contains a large amount of metal and cannot be degraded when placed in the human body for a long time, and will release metals such as nickel ions, resulting in metal poisoning of the human body. At the same time, the metal in the patient's body will also affect the applicability of other examinations (such as magnetic resonance imaging).

[0005] Therefore, an improved technical solution is needed to address the above deficiencies of the prior art. Summary of the Invention

[0006] The object of the present invention is to provide a vascular occluder to solve the technical problems in the prior art that the applicable puncture port range of the vascular occluder is narrow, the hemostatic effect is limited, it cannot adhere to the puncture port, and there is metal residue affecting subsequent examinations.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A vascular occluder, comprising:

[0009] A sealing inner disc and a sealing outer disc which are connected at intervals, both the sealing inner disc and the sealing outer disc have a support skeleton that can be radially expanded or contracted, the support skeleton is made of an absorbable material, the sealing inner disc expands after entering the puncture port in the contracted state to seal the inner side of the puncture port, and the sealing outer disc is used to seal the outer side of the puncture port after expansion;

[0010] A containing component, which is used to contain a substance that becomes a hemostatic gel after being discharged to the target position;

[0011] A driving component, which is used to reduce the volume of the containing component to push the hemostatic gel between the sealing inner disc and the sealing outer disc.

[0012] As a further optimized technical solution, the vascular occluder further includes a protective sleeve, and the inner cavity of the protective sleeve is used to accommodate the sealing inner disc and the sealing outer disc in the contracted state.

[0013] As a further optimized technical solution, the driving component includes a support frame for placing the containing component, a pushing structure for changing the volume of the containing component is arranged on one side of the support frame, and the pushing structure is slidably matched with the support frame.

[0014] As a further optimized technical solution, a liquid discharge conduit for discharging the hemostatic gel is communicated with the side of the containing component away from the pushing structure, and the hemostatic gel is transported to the target position through the liquid discharge conduit.

[0015] As a further optimized technical solution, the vascular occluder further includes an operating handle, an inlet liquid conduit extending axially is arranged on the operating handle, one end of the inlet liquid conduit is communicated with the liquid discharge conduit, and the other end is arranged on the side of the sealing outer disc away from the sealing inner disc.

[0016] As a further optimized technical solution, the sealing outer disc and the sealing inner disc are fixedly connected by a core shaft, and the part of the core shaft away from the sealing inner disc and the sealing outer disc is arranged in the liquid discharge conduit and fixedly connected with the operating handle.

[0017] As a further optimized technical solution, one end of the protective sleeve close to the sealing outer disc is sleeved on the outer side of the liquid discharge conduit and is slidably matched with the liquid discharge conduit.

[0018] As a further optimized technical solution, a flow-blocking membrane for preventing blood from flowing outwards is provided on the support skeleton of the plugging inner disc, and the flow-blocking membrane is made of an absorbable material.

[0019] As a further optimized technical solution, the accommodating component includes two syringes, which are respectively used to contain a first solution and a second solution, and the first solution and the second solution are mixed to form a hemostatic gel.

[0020] As a further optimized technical solution, a liquid mixing component is connected to the liquid outlets of the two syringes, and the two syringes are communicated with the drainage catheter through the liquid mixing component.

[0021] Beneficial effects:

[0022] (1) The plugging inner disc and the plugging outer disc have the function of being radially expandable or contractible through the provided support skeleton. Compared with traditional sponge plugging devices, the support skeleton has stronger stability after expansion, and a larger radial expansion size, breaking through the limitation of the narrow range of applicable puncture ports. Whether it is a conventional 5-7F arterial puncture port or a larger puncture port greater than 7F, this plugging device can effectively plug, significantly expanding the clinical scope of application and providing a solid guarantee for the smooth development of various interventional surgeries;

[0023] (2) By injecting a hemostatic gel between the plugging inner disc and the plugging outer disc, a synergistic hemostatic mechanism is formed. The hemostatic gel can not only directly act on the puncture port to accelerate blood coagulation, but also enhance the adhesion between the plugging inner disc and the plugging outer disc and the puncture port. Even in the face of complex situations with relatively large arterial blood pressure, it can ensure that the puncture port is firmly closed, greatly reducing the incidence of bleeding complications caused by plugging failure and significantly improving the safety and reliability of the surgery.

[0024] (3) By using an absorbable material to make the support skeleton, a series of problems caused by metal residues of traditional metal closure clips are fundamentally eliminated. It not only avoids the risk of metal poisoning caused by the long-term release of metals such as nickel ions in the human body, but also enables patients to freely undergo examinations sensitive to metals in the body such as magnetic resonance imaging after surgery, greatly broadening the selection space of subsequent treatment plans for patients and enhancing the flexibility and comprehensiveness of the overall medical service. Description of the drawings

[0025] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0026] Figure 1 is a schematic diagram of the overall structure of a vascular plugging device according to an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the assembly relationship between the protective sleeve, the inner plugging disc and the outer plugging disc in an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the internal structure of the operating handle in an embodiment of the present invention;

[0029] Figure 4 Exploded view of the driving component in an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the shape that the inner plugging disc can form after unfolding in an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of the inner plugging disc entering the puncture port in an embodiment of the present invention;

[0032] Figure 7 Schematic diagram of the inner plugging disc entering the puncture port in an embodiment of the present invention;

[0033] Figure 8 Schematic diagram of the inner plugging disc entering the puncture port in an embodiment of the present invention;

[0034] Figure 9 Schematic diagram of the inner plugging disc entering the puncture port in an embodiment of the present invention.

[0035] In the figure: 1, inner plugging disc; 2, outer plugging disc; 3, puncture port; 4, accommodating component; 5, driving component; 51, support frame; 52, pushing structure; 6, protective sleeve; 7, hemostatic gel; 8, drainage catheter; 9, operating handle; 10, liquid inlet catheter; 11, mandrel; 12, flow blocking membrane; 13, liquid mixing component; 14, subcutaneous tissue; 15, blood vessel wall; 16, three-way valve. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "connected" and "coupled" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. Additionally, the term "proximal end" uniformly refers to the end close to the operator, and the "distal end" refers to the end far from the operator.

[0038] The shapes and sizes of the components in the drawings do not reflect the true proportions of the product, and the purpose is only to schematically illustrate the content of the present utility model.

[0039] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0040] The present invention provides a vascular occluder, which includes a sealing inner disc and a sealing outer disc that are spaced and connected. Both of them have a radially expandable or contractible support skeleton, and the support skeleton is made of an absorbable material. When in use, the sealing inner disc can enter the puncture port in the contracted state and then expand to seal the inner side of the puncture port, and the sealing outer disc is used to seal the outer side of the puncture port after expansion. This design enables the occluder to adapt to puncture ports of different sizes, overcoming the problem of narrow application range of traditional sponge plug type occluders.

[0041] Embodiment 1

[0042] As Figure 1 、 Figure 2 shown, the vascular occluder includes a sealing inner disc 1, a sealing outer disc 2, a receiving component 4, and a driving component 5.

[0043] The plugging inner disc 1 and the plugging outer disc 2 are connected at intervals and arranged on the mandrel 11. The connection methods of the mandrel 11 with the plugging inner disc 1 and the plugging outer disc 2 are one or more of gluing and welding. The material at the connection of the mandrel 11 to the plugging inner disc 1 and the plugging outer disc 2 is an absorbable polymer material or an absorbable metal material; among them, the absorbable polymer material is one or more of materials such as polylactic acid, polyglycolic acid, poly(lactic-co-glycolic acid) copolymer, polypropyl acetate, polydioxane, polydioxanone, polyhydroxyalkanoate, polytrimethylene carbonate, polyurethane, polyetherurethane, etc.; the absorbable metal material is one or more of materials such as magnesium alloy, iron alloy, zinc alloy, etc. The material of the mandrel 11 at a position far from the plugging inner disc 1 and the plugging outer disc 2 is selected from one or more of materials such as polyethylene, polypropylene, polyvinyl chloride, polyurethane, polytetrafluoroethylene, polycarbonate, polystyrene, acrylonitrile-butadiene-styrene graft copolymer, etc.

[0044] Both the plugging inner disc 1 and the plugging outer disc 2 have a set of support skeletons that can be radially expanded or contracted. One end of each set of support skeletons is evenly arranged on the mandrel 11 along the circumferential direction, and the other end contracts or expands in a manner of approaching or departing from the mandrel 11. The presence of the support skeletons makes the radial stability of the plugging inner disc 1 and the plugging outer disc 2 stronger, so that the range of puncture ports that this device can plug is wider. The support skeletons are made of an absorbable material, and this material is an absorbable polymer material or an absorbable metal material; among them, the absorbable polymer material is one or more of materials such as polylactic acid, polyglycolic acid, poly(lactic-co-glycolic acid) copolymer, polypropyl acetate, polydioxane, polydioxanone, polyhydroxyalkanoate, polytrimethylene carbonate, polyurethane, polyetherurethane, etc.; the absorbable metal material is one or more of materials such as magnesium alloy, iron alloy, zinc alloy, etc., which can minimize the impact of the plugging inner disc 1 and the plugging outer disc 2 on the health of the patient.

[0045] In the present invention, the support skeletons adopt different manufacturing processes according to the selection of materials.

[0046] First, the manufacturing method of the absorbable polymer material: One or more of the absorbable polymer materials are vacuum-dried at 30°C - 60°C for 2 - 12 h. Under a protective atmosphere, the temperature of the heating chamber is set at 150°C - 200°C, and an absorbable polymer support skeleton is obtained by a method of compression molding, extrusion molding, injection molding, calendering molding, or secondary molding.

[0047] Second, the manufacturing method of the absorbable metal material: One or more of the absorbable metal materials are sieved to obtain metal particles with a particle size range of 10 - 100 μm. Under a protective atmosphere, they are put into a resistance furnace for melting according to the designed composition ratio. The alloy melt is infiltrated into the voids of the template in a negative pressure seepage device, and after natural cooling, it is demolded and formed, and the support skeleton of the absorbable metal is obtained through machining.

[0048] Specifically, it can be made by selecting a suitable manufacturing process according to actual needs.

[0049] When the inner plugging disc 1 and the outer plugging disc 2 are used, the inner plugging disc 1 enters the puncture port 3 in a contracted state and then expands to plug the inner side of the puncture port 3, and the outer plugging disc 2 is used to plug the outer side of the puncture port 3 after expansion.

[0050] The accommodating component 4 is used to hold the substance that is discharged to the target position until the hemostatic gel 7, and the driving component 5 is used to reduce the volume of the accommodating component 4 to push the hemostatic gel 7 between the inner plugging disc 1 and the outer plugging disc 2.

[0051] The driving component 5 is used to reduce the volume of the accommodating component 4 to push out the substance in the accommodating component 4, so that the hemostatic gel 7 is then sent between the inner plugging disc 1 and the outer plugging disc 2. In this way, the hemostatic gel 7 can not only directly act on the puncture port 3 to accelerate blood coagulation, but also enhance the adhesion between the inner plugging disc 1 and the outer plugging disc 2 and the puncture port 3, ensuring that the puncture port 3 is firmly closed, and greatly reducing the incidence of bleeding complications caused by plugging failure.

[0052] In this embodiment, the hemostatic gel 7 is a polyethylene glycol hydrogel, and a therapeutic drug can be added to the polyethylene glycol hydrogel to reduce the adverse reactions at the position of the puncture port 3. The specific therapeutic drug can include one or more of antiplatelet adhesion drugs, anticoagulant drugs, anti-proliferation drugs, and anti-infection drugs. Antiplatelet adhesion drugs include one or more of aspirin, clopidogrel, ticagrelor, tirofiban, cilostazol, dipyridamole, prostaglandin, persantin, etc.; anticoagulant drugs include one or more of heparin, hirudin, dicoumarol, warfarin sodium, vitamin K antagonist, etc.; anti-proliferation drugs include one or more of rapamycin and its derivatives, paclitaxel, dexamethasone, docetaxel, probucol, colchicine, etc.; anti-infection drugs include one or more of penicillins, cephalosporins, atypical beta-lactams, aminoglycosides, macrolides, tetracyclines, etc.

[0053] The hemostatic gel 7 is formed by mixing two solutions during use. This design ensures that the hemostatic gel 7 is only mixed during use, avoiding the problem of gel failure caused by premature mixing. Therefore, in the present invention, the accommodating member 4 is two syringes, which are respectively used to contain the first solution and the second solution. The first solution and the second solution are discharged simultaneously and mixed to form the hemostatic gel 7. Among them, the solvent in the first solution and the second solution is PBS buffer solution with pH = 7.4; in addition, the molar ratio of the multi-arm polyethylene glycol containing imide groups to the multi-arm polyethylene glycol containing amino groups in the PBS buffer solution is 4:1 to 1:4; the concentrations of the multi-arm polyethylene glycol solution containing imide groups and the multi-arm polyethylene glycol solution containing amino groups are both 5 to 30 wt%. The syringe specifications are 5 mL to 10 mL; the syringe material is one or more of materials such as PP, PC, glass, and nitrile rubber.

[0054] In this embodiment, as Figure 4 shown, the driving member 5 is a dual syringe, including a support frame 51 for placing the accommodating member 4. A groove for placing the syringe is arranged on the support frame 51. A pushing structure 52 for changing the volume of the accommodating member 4 is arranged on one side of the groove. The pushing structure 52 is slidably matched with the support frame 51 to simultaneously push the pistons of the two syringes to move.

[0055] In order to conveniently transport the hemostatic gel 7 to the target position, a drainage catheter 8 for discharging the hemostatic gel 7 is communicatedly arranged on the side of the accommodating member 4 away from the pushing structure 52. The hemostatic gel 7 is transported to the target position through the drainage catheter 8.

[0056] Furthermore, in order to facilitate the mixing of the first solution and the second solution, a liquid mixing member 13 is connected to the liquid outlet of the two syringes. The two syringes are communicated with the drainage catheter 8 through the liquid mixing member 13. The connection mode between the liquid mixing member 13 and the syringe is a Luer connector or a threaded connection. The liquid mixing member 13 is communicated with the drainage catheter 8 by using a three-way valve 16. The material of the liquid mixing member 13 is one or more of materials such as polyethylene, polypropylene, polyvinyl chloride, polyurethane, polytetrafluoroethylene, polycarbonate, polystyrene, acrylonitrile-butadiene-styrene graft copolymer, silica gel, rubber, and silicone rubber.

[0057] Furthermore, as Figure 3 shown, the vascular occluder further includes an operating handle 9. The operating handle 9 has an axially extending liquid inlet catheter 10. One end of the liquid inlet catheter 10 is communicated with the drainage catheter 8, and the other end is arranged on the side of the occluding outer disc 2 away from the occluding inner disc 1. Through the operating handle 9, the operator can more conveniently operate the entire vascular occluder and can accurately control the conveying position of the hemostatic gel 7.

[0058] The part of the mandrel 11 connecting the sealing outer disc 2 and the sealing inner disc 1, which is far from the sealing inner disc 1 and the sealing outer disc 2, is arranged inside the drainage catheter 8 and fixedly connected with the operating handle 9, and the connection method is one or more of gluing and welding.

[0059] Further, the blood vessel occluder further includes a protective sleeve 6, and the inner cavity of the protective sleeve 6 is used to accommodate the sealing inner disc 1 and the sealing outer disc 2 in a contracted state. The material of the protective sleeve 6 is one or more of polyethylene, polypropylene, polyvinyl chloride, polyurethane, polytetrafluoroethylene, polycarbonate, polystyrene, acrylonitrile-butadiene-styrene graft copolymer, silica gel, rubber, silicone rubber and other materials. It can protect the sealing inner disc 1 and the sealing outer disc 2 during transportation and operation, preventing them from unfolding or being damaged accidentally.

[0060] Further, one end of the protective sleeve 6 close to the sealing outer disc 2 is sleeved outside the drainage catheter 8 and is in sliding fit with the drainage catheter 8.

[0061] Further, a flow-blocking membrane 12 for preventing blood from flowing outwards is arranged on the support skeleton of the sealing inner disc 1. The flow-blocking membrane 12 can further prevent blood from flowing out after the sealing inner disc is unfolded, enhancing the hemostatic effect. The flow-blocking membrane 12 is made of an absorbable material so as not to remain in the body. This absorbable material is one or more of biodegradable polymer materials such as polylactic acid, polyglycolic acid, polylactic acid-glycolic acid copolymer, polyhydroxy fatty acid ester, poly-p-dioxanone, polycaprolactone, polyamide, polyanhydride, polyphosphate ester, polyurethane, polycarbonate, etc. The flow-blocking membrane 12 can be integrally formed or can be formed by weaving filaments. When the latter is used, the filaments are obtained by one or more of melt spinning, solution spinning, wet spinning, dry spinning, dry-wet spinning, gel spinning, electrospinning and other processes. The shape of the sealing inner disc 1 after being fully unfolded can be a Figure 5 circle or any star shape with different numbers of corners as shown.

[0062] During the process of occluding the puncture opening 3, the occlusion steps are as follows:

[0063] The first step, as Figure 6 shown, push the distal end of the protective sleeve 6 containing the sealing inner disc 1 and the sealing outer disc 3 into the puncture opening 3 to the inner side of the blood vessel wall 15 at the bottom of the puncture opening 3.

[0064] The second step, pull the protective sleeve 6 in the proximal direction until the sealing inner disc 1 is completely exposed in the blood vessel.

[0065] The third step, as Figure 7 shown, pull the operating handle 9 in the proximal direction until the sealing inner disc 1 is fully unfolded and completely fits the inner side of the blood vessel wall 15.

[0066] Step 4: Open the three-way valve 16, push the pushing structure 52, and simultaneously push the solutions in the two syringes 4 to the poly(ethylene glycol) hydrogel crosslinked after mixing in the liquid mixing component 13, and push it along the drainage catheter 8 to the distal end of the drainage catheter 8. The poly(ethylene glycol) hydrogel passes through the sealing outer disc 2 without the flow blocking membrane 12 and flows into the puncture opening 3 until it is observed that the blood flow significantly decreases after puncture, confirm that the occlusion is in place, and stop pushing the dual syringe.

[0067] Step 5: As Figure 8 shown, continue to pull the protective sleeve 6 in the proximal direction until the sealing outer disc 2 is completely exposed and opened in an umbrella shape, stop pulling, and then push the protective sleeve 6 in the distal direction to move forward, push the sealing outer disc 2 to be fully deployed and attached to the outside of the subcutaneous tissue 14, so that the crosslinked poly(ethylene glycol) hydrogel fully covers the sealing outer disc 2. As Figure 9 shown, after the gel is completely solidified, the sealing inner disc 1 and the sealing outer disc 2 are fixed to the puncture opening 3 through the poly(ethylene glycol) hydrogel, and then cut along the core shaft 11 to complete the occlusion.

[0068] Embodiment 2

[0069] In this embodiment, different from Embodiment 1, the hemostatic gel can be prepared in advance. At this time, the accommodating component can be at least one syringe, and the substance in the syringe is directly the hemostatic gel. The driving component pushes the piston of the syringe to directly push out the hemostatic gel in the syringe and transport it through the liquid inlet catheter to between the sealing inner disc and the sealing outer disc.

[0070] In summary, the vascular occluder of the present invention has achieved a qualitative leap in core indicators such as improving the vascular occlusion efficiency, ensuring patient safety, and enhancing the convenience of medical operations, and has extremely high clinical application value and broad market prospects.

[0071] It can be understood that the above description is only exemplary, and the embodiments of the present application do not limit this.

[0072] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, 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: include: The inner sealing disk (1) and the outer sealing disk (2) are arranged in a spaced relationship, and both the inner sealing disk (1) and the outer sealing disk (2) have a radially expandable or contractible support frame, and the support frame is made of an absorbable material. The inner sealing disk (1) enters the puncture opening (3) in a contracted state and then expands to seal the inner side of the puncture opening (3), and the outer sealing disk (2) is used to seal the outer side of the puncture opening (3) after it is expanded; A containing part (4), the containing part (4) is used to contain the substance of the hemostatic gel (7) after being discharged to the target position; A driving component (5) is used to reduce the volume of the containing component (4) so ​​as to push the hemostatic gel (7) between the blocking inner disk (1) and the blocking outer disk (2).

2. The vascular occluder according to claim 1, characterized in that: The blood vessel occluder further comprises a protective sleeve (6), the inner cavity of which is used to accommodate the occluding inner disk (1) and the occluding outer disk (2) in a contracted state.

3. The vascular occluder according to claim 2, characterized in that: The driving component (5) comprises a support frame (51) for placing the accommodating component (4), and a driving structure (52) for changing the volume of the accommodating component (4) is provided on one side of the support frame (51), and the driving structure (52) is slidably matched with the support frame (51).

4. The vascular occluder according to claim 3, characterized in that: A drainage conduit (8) for discharging the hemostatic gel (7) is provided on a side of the containing component (4) away from the pushing structure (52), and the hemostatic gel (7) is transported to a target position through the drainage conduit (8).

5. The vascular occluder according to claim 4, characterized in that: The blood vessel occluder further comprises an operating handle (9), wherein the operating handle (9) is provided with an axially extending liquid inlet conduit (10), wherein one end of the liquid inlet conduit (10) is connected to the liquid discharge conduit (8), and the other end is arranged on a side of the occluding outer disk (2) away from the occluding inner disk (1).

6. The vascular occluder according to claim 5, characterized in that: The plugging outer disk (2) and the plugging inner disk (1) are fixedly connected via a core shaft (11); a portion of the core shaft (11) away from the plugging inner disk (1) and the plugging outer disk (2) is inserted into a drainage conduit (8) and fixedly connected to an operating handle (9).

7. The vascular occluder according to claim 5, characterized in that: One end of the protective sleeve (6) close to the sealing outer disk (2) is sleeved on the outside of the drainage conduit (8) and is slidably matched with the drainage conduit (8).

8. The vascular occluder according to any one of claims 1 to 7, characterized in that: A flow-blocking membrane (12) for preventing blood from flowing out to the outside is arranged on the supporting frame of the blocking inner disk (1); the flow-blocking membrane (12) is made of an absorbable material.

9. The vascular occluder according to any one of claims 1 to 7, characterized in that: The containing component (4) comprises two syringes, which are respectively used to contain a first solution and a second solution, and the first solution and the second solution are mixed to form a hemostatic gel (7).

10. The vascular occluder according to claim 9, characterized in that: The liquid outlets of the two syringes are connected with a liquid mixing component (13), and the two syringes are connected with a liquid discharge conduit (8) via the liquid mixing component (13).

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