Blood vessel crevasse plugging device

Abstract

The invention belongs to the field of medical instruments, and discloses a blood vessel crevasse plugging device which comprises a plugging assembly and a driving assembly, and the plugging assembly comprises a plugging part I, a plugging part II and an elastic sealing part. Under the condition that the first blocking part and the second blocking part compress the elastic sealing assembly, the elastic sealing piece can turn over and deform outwards, the pressing and attaching part can be driven to extend outwards through the deformation effect, the turn-over effect is reduced due to thickening, and therefore the sealing effect is improved. Furthermore, the pressing parts at the two ends can relatively move to be pressed on the two sides of the aortic intima for plugging, the diameter is small before deformation, the pressing parts can conveniently stretch into a crevasse, installation is convenient, and the structure is simpler and more effective.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a blood vessel breakage plugging device. BACKGROUND

[0002] The tube wall of the aorta is a three-layer composite membrane structure, which is respectively an intima, a media and an adventitia. The corresponding internal intima is a true lumen of the aorta. If the intima of the aorta is broken and a breakage occurs, the high-speed blood flow in the aorta will enter between the intima and the media, tear the tube wall of the aorta into layers, and form an aortic false lumen near the breakage between the intima and the media. This is easy to cause the tube wall of the aorta to rupture and bleed, and even endanger life.

[0003] In the prior art, in order to achieve treatment of the disease, there are two kinds of plugging devices, one is based on a long covered stent to cover and plug the breakage of the tube wall. The diameter of the breakage is often less than 1 cm, and the stent used to cover the breakage is often as long as 10 cm or even longer. The coverage of such a long stent affects the elasticity of the tube wall, especially for the breakage near the opening of the branch blood vessel of the aorta. The coverage of the stent will affect the blood supply of the branch blood vessel, and often needs to use multiple technologies to reconstruct the blood flow of the branch blood vessel, which is complex to operate and affects the long-term patency of the branch blood vessel. The other is a plugging assembly formed by weaving which can be axially compressed and elongated. The plugging assembly is provided with a driving structure to control the state of the plugging assembly. In the plugging state, the cross section is H-shaped, and the plugging effect is better than the former, such as a medical device with a patent number CN222426109U. However, the device is currently more expensive and has a more complex structure. The weaving process requires high requirements and is difficult to weave. Moreover, the driving structure is also more complex.

[0004] Therefore, there is a need for a plugging device with better plugging effect, simpler structure and lower cost. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a blood vessel breakage plugging device to solve the problems of complex structure and high cost of the existing plugging device.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A blood vessel breakage plugging device, comprising a plugging assembly and a driving assembly, the plugging assembly comprising a plugging part one, a plugging part two and an elastic sealing part, the plugging part one and the plugging part two being connected in an extension mode and forming an annular mounting groove with adjustable slot width in the axial direction between them, the annular mounting groove being provided with an annular elastic sealing part, the driving assembly driving the plugging part one and the plugging part two to extend to extrude the elastic sealing part, so that the elastic sealing part is switched from the axial extension state to the radial extension state;

[0008] The cross section of the elastic sealing component is C-shaped, the elastic sealing component includes thickened portions at both axial ends and a waist portion between the thickened portions, the thickened portions extend outward in the radial direction to form pressing portions, and the pressing portions and the waist portion are smoothly connected;

[0009] In the axial extension state, the elastic sealing component has a deformation movement tendency of inward contraction, in the radial extension state, the elastic sealing component has a deformation movement tendency of outward rolling in the radial direction, and the pressing portions perform pressing actions in relative movement with the deformation movement tendency.

[0010] In a possible implementation, the elastic sealing component is made of medical-grade rubber material, and the surface of the elastic sealing component is provided with an anticoagulant coating and a hydrophilic coating.

[0011] In a possible implementation, the thickness of the middle part of the waist portion is less than the thickness of both ends of the waist portion, and the thickness gradually increases from the middle part to both ends.

[0012] In a possible implementation, one end of the first blocking portion close to the second blocking portion is provided with a tubular connecting portion, one end of the second blocking portion close to the first blocking portion is provided with an annular groove for inserting the tubular connecting portion, and the tubular connecting portion is slidingly fitted in the annular groove.

[0013] In a possible implementation, the driving assembly includes a connecting shaft, a transmission member, and a driving rod, the end of the connecting shaft is provided with a threaded connector one, the second blocking portion is provided with a mounting cavity, the transmission member is rotationally arranged in the mounting cavity, the transmission member is provided with a connecting cavity one and a connecting cavity two in the axial direction, the threaded connector is screw-fitted in the connecting cavity one, and the driving rod is connected to the connecting cavity two to drive the transmission member to rotate.

[0014] In a possible implementation, the driving rod is connected with a threaded connector two, the driving rod is screw-fitted in the connecting cavity two through the threaded connector two, the screwing direction of the threaded connector two in the connecting cavity two is consistent with the rotating direction of the transmission member driving the threaded connector one to move to the inside of the connecting cavity one in the axial direction, and the second blocking portion is provided with a movable interface for the threaded connector two and the driving rod to move out.

[0015] In a possible implementation, the transmission member is provided with a driving connection port for inserting a dismounting tool at the port of the connecting cavity two or the cavity wall between the connecting cavity two and the connecting cavity one.

[0016] In a possible implementation, the delivery assembly further comprises an outer sleeve, a first fastener and a second fastener, the driving rod is movably arranged in the outer sleeve, the outer sleeve is provided with the first fastener at one end, the second fastener is arranged on the blocking part two, and the first fastener is fastened with the second fastener.

[0017] In a possible implementation, the delivery assembly further comprises an outer sheath, and the outer sleeve is movably arranged in the outer sheath.

[0018] In a possible implementation, the blocking part one is a conical guide structure.

[0019] In a possible implementation, the cross section of the annular mounting groove is also a C-shaped structure.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The blood vessel rupture sealing device of the present application can realize the outward rolling deformation of the elastic sealing part under the compression of the blocking part one and the blocking part two, drive the pressing part to extend outward, and realize the relative movement of the pressing part at the two ends to press and seal the inner membrane of the aorta on both sides, and the diameter is small before deformation, which facilitates the insertion into the rupture, and the device is convenient to install, simple in structure, effective, and the blocking part one and the blocking part two can also play an auxiliary sealing role, and the sealing effect is better and the cost is lower.

[0022] Moreover, the elastic sealing part is made of a medical-grade rubber material with an anticoagulant coating and a hydrophilic coating, which can be used in a blood vessel environment while having the required deformation characteristics, and the thickness of the waist part is gradually changed, which can reduce the rolling force during deformation and further press and seal the inner membrane of the blood vessel.

[0023] Meanwhile, the driving rod of the driving assembly can control the extension and retraction of the blocking part one and the blocking part two by rotating, which is convenient to adjust, and the driving rod has a transmission member with a connecting cavity two, which is in a screwed state when controlling the retraction, so that the compression of the elastic sealing part by the blocking part one and the blocking part two can be completed, and when the driving rod is rotated in the opposite direction, the driving rod can be disconnected from the transmission member, so that the driving rod and the sealing assembly can be disconnected conveniently and quickly. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Fig. 1 is a schematic view of the state of a blood vessel rupture sealing device during installation;

[0025] Figure 2A cross-sectional view of a vascular rupture sealing device in an axial extension state;

[0026] Figure 3 A cross-sectional view of a vascular rupture sealing device in a radial extension state;

[0027] Figure 4 A perspective view of a sealing part one and a sealing part two of a vascular rupture sealing device, which does not show the elastic sealing part;

[0028] Figure 5 A schematic view of an elastic sealing part of a vascular rupture sealing device in the process of switching from an axial extension state to a radial extension state;

[0029] Figure 6 A cross-sectional view of a sealing part one of a vascular rupture sealing device;

[0030] Figure 7 A cross-sectional view of a sealing part two of a vascular rupture sealing device;

[0031] Figure 8 A cross-sectional view of a driving assembly of a vascular rupture sealing device;

[0032] Figure 9 A connection cross-sectional view of a fastener one and a fastener two of a vascular rupture sealing device.

[0033] In the figure: 1-aorta; 11-intima; 12-rupture; 2-outer sheath tube; 3-sealing assembly; 31-sealing part one; 311-tubular connection part; 32-sealing part two; 321-annular groove; 322-mounting cavity; 323-fastener two; 324-perforation; 325-movable interface; 33-elastic sealing part; 331-thickened part; 332-waist part; 34-annular mounting groove; 4-driving assembly; 41-connection shaft; 42-transmission member; 421-connection cavity one; 422-connection cavity two; 423-driving connection port; 43-screwed connection head one; 44-screwed connection head two; 45-driving rod; 5-outer sleeve; 51-fastener one. DETAILED DESCRIPTION

[0034] In order to make the skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail below in combination with specific embodiments.

[0035] Please refer to Figures 1-9As shown, the embodiment of the present application provides a blood vessel rupture 12 occlusion device, which comprises an occlusion assembly 3 and a driving assembly 4, the occlusion assembly 3 comprises an occlusion part one 31, an occlusion part two 32 and an elastic sealing part 33, the occlusion part one 31 and the occlusion part two 32 are connected in an extension and retraction manner and form an annular mounting groove 34 with adjustable groove width in the axial direction between them, the annular elastic sealing part 33 is arranged in the annular mounting groove 34, and the driving assembly 4 drives the occlusion part one 31 and the occlusion part two 32 to extend and retract to extrude the elastic sealing part 33, so that the elastic sealing part 33 is switched from the axial extension state to the radial extension state.

[0036] The occlusion assembly 3 is used for occluding the rupture 12 of the aorta 1, and the occlusion mode is to clamp the intima 11 wall of the aorta 1 from the inside of the rupture 12. The occlusion part one 31 and the occlusion part two 32 of the occlusion assembly 3 are occlusion bodies, and the elastic sealing part 33 is used to press and stick when clamping the intima 11 wall of the aorta 1 from the side. The occlusion part one 31 and the occlusion part two 32 are connected in an extension and retraction manner, that is, they can move relative to each other, and through the relative movement, the elastic sealing part 33 is extruded in the circumferential direction, so that it deforms. The elastic sealing part 33 is in an annular structure, which can also be said to be a sleeve structure, and it is installed in the annular mounting groove 34. Since the occlusion part one 31 and the occlusion part two 32 can extend and retract, the annular mounting groove 34 has adjustable groove width in the axial direction, and the driving assembly 4 is used to drive the occlusion part one 31 and the occlusion part two 32 to extend and retract. The elastic sealing part 33 has elasticity, and when it is not extruded in the axial direction in the annular mounting groove 34, it is in a radial extension state, in which state the elastic sealing part 33 is tightened inward and fits in the annular mounting groove 34, and when it is extruded in the axial direction, it is switched to the radial extension state, in which state the elastic sealing part 33 deforms radially.

[0037] It can be understood that for the sleeve-shaped elastic part, such as the elastic part made of rubber material, when it is extruded in the axial direction, its two ends will usually produce outward rolling deformation, which is mainly because the specific elastic material will shrink in the stress direction when it is pressed, and will expand in the radial direction due to the Poisson effect. When the axial pressure exceeds the critical value, the elastic part tends to fold outward to release stress due to stress concentration and lack of radial constraint.

[0038] Therefore, in order to better utilize the characteristics of the elastic member to achieve the fixing at the break 12 by being pressed and attached from inside to outside, in the embodiment of the present application, the cross section of the elastic sealing member 33 is C-shaped, the elastic sealing member 33 includes thickened portions 331 at both axial ends and a waist portion 332 between the thickened portions 331, the thickened portions extend outward in the radial direction to form pressing portions, and the pressing portions and the waist portion 332 are smoothly connected; wherein the elastic sealing member 33 has a deformation movement trend of being inwardly contracted in the axial extension state, and the elastic sealing member 33 has a deformation movement trend of being outwardly rolled in the radial direction in the radial extension state, and the pressing portions make a pressing action of relative movement with the deformation movement trend.

[0039] The cross section of the elastic sealing member 33 is C-shaped, which is beneficial for radial deformation when being pressed in the axial direction, and thus is more beneficial for achieving the required shape. The thickness of different parts of the elastic sealing member 33 is not the same, and the thickened end is used to reduce the rolling force in the radial deformation process, and the reduced rolling force is used as the acting force for the movement of the thickened portion 331 to the other thickened portion 331, thereby realizing the pressing action, and the pressing portions can also extend in the direction perpendicular to the axial direction in the free state by thickening, which is beneficial for being better pressed and also has a larger release area when the pressing portions are in contact with each other or the inner wall of the aorta 1, thereby achieving better sealing and blocking effect. The smooth transition of the pressing portions and the waist portion 332 is beneficial for transmitting the radial deformation to the pressing portions for the pressing action. Therefore, the elastic sealing member 33 has an extension state switching to a radial extension state, the elastic sealing member 33 has a deformation movement trend of being inwardly contracted in the axial extension state, which can make the waist portion 332 of the elastic sealing member 33 more relaxed and also facilitate the transmission of deformation stress in the radial direction, the elastic sealing member 33 has a deformation movement trend of being outwardly rolled in the radial direction in the radial extension state, and the pressing portions make a pressing action of relative movement with the deformation movement trend.

[0040] By the technical scheme, the elastic sealing member is deformed outwardly under the axial pressure, and the compression of the elastic sealing assembly can drive the compression part to extend outwardly, and the thickened ends make the deformation smaller, so that the compression part at the two ends can be relatively moved to be compressed on the inner wall of the aorta, and the diameter of the elastic sealing member is smaller before deformation, so that the elastic sealing member is convenient to be inserted into the broken hole, and the structure is simple and effective, and the compression part one and the compression part two can also assist in compression, so that the compression effect is better and the cost is lower.

[0041] In an embodiment, the elastic sealing member 33 is a medical-grade rubber material, and the surface of the elastic sealing member 33 is provided with an anticoagulant coating and a hydrophilic coating.

[0042] In this way, the medical-grade rubber material has good medical performance requirements, and can better adapt to the blood vessel environment through the anticoagulant coating and the hydrophilic coating provided thereon. The anticoagulant coating can be coated with active anticoagulants, and the hydrophilic coating can reduce the friction damage to the blood vessel wall when being placed. The hydrophilic coating can be a polymer coating formed by a hydrogel, or a multifunctional coating of a hyaluronic acid-dopamine-PLGA composite system. The coating has the functions of hydrophilicity and anticoagulation, and is more suitable for the compression device.

[0043] Further, the thickness of the middle part of the waist part 332 is smaller than the thickness of the two ends of the waist part 332, and the thickness gradually increases from the middle part to the two ends.

[0044] In this way, the thickness of the middle part of the waist part 332 is smaller, and the thickness of the two ends is larger, so that the elastic sealing member 33 can be radially deformed under a smaller extrusion force, and the operation difficulty is reduced, and the compression part is more easily compressed.

[0045] In a preferred embodiment of the telescopic connection of the compression part one 31 and the compression part two 32, the compression part one 31 is provided with a tubular connecting part 311 at one end close to the compression part two 32, the compression part two 32 is provided with an annular groove 321 for inserting the tubular connecting part 311 at one end close to the compression part one 31, and the tubular connecting part 311 is slidingly fitted in the annular groove 321.

[0046] By providing the annular groove 321 in the compression part two 32 and the tubular connecting part 311, the distance between the compression part one 31 and the compression part two 32 in the retracted state can be minimized, so that the compression is more compact and the fixing effect is better.

[0047] In order to realize the telescopic driving of the first sealing part 31 and the second sealing part 32 by the driving assembly 4, in combination with the driving assembly 4 shown in Figure 2 、 Figure 3 and Figure 7 , in the embodiment of the present application, the driving assembly 4 comprises a connecting shaft 41, a transmission member 42 and a driving rod 45, the end of the connecting shaft 41 is provided with a threaded connector 43, the second sealing part 32 is provided with a mounting cavity 322, the transmission member 42 is rotationally arranged in the mounting cavity 322, the transmission member 42 is provided with a connecting cavity 421 and a connecting cavity 422 along the axial direction, the threaded connector 43 is threadedly fitted in the connecting cavity 421, and the driving rod 45 is connected to the connecting cavity 422 to drive the transmission member 42 to rotate.

[0048] The connecting shaft 41 is fixed on the first sealing part 31, and the end of the connecting shaft 41 is provided with a threaded connector 43. The transmission member 42 is arranged in the second sealing part 32 through the mounting cavity 322 and is rotatable in the mounting cavity 322. The transmission member 42 has two threaded cavities, i.e., the connecting cavity 421 and the connecting cavity 422. The threaded connector 43 is threadedly connected in the connecting cavity 421. Since the transmission member 42 is threadedly connected with the threaded connector, and the first sealing part 31 and the second sealing part 32 are only relatively movable, when the transmission member 42 rotates, the transmission member 42 can drive the first sealing part 31 connected with the threaded connector to move, and thus the telescopic control of the first sealing part 31 and the second sealing part 32 can be realized by the forward and reverse rotation, so that the extrusion action of the elastic sealing part 33 can be realized. The driving rod 45 is used to drive the transmission member 42 to rotate, and the transmission member 42 can be rotated by the rotation of the driving rod 45.

[0049] Further, in order to facilitate the removal of the driving rod 45 after the sealing is completed, the driving rod 45 is connected with a threaded connector 44, the driving rod 45 is threadedly fitted in the connecting cavity 422 through the threaded connector 44, the tightening direction of the threaded connector 44 in the connecting cavity 422 is consistent with the rotation direction of the transmission member 42 driving the threaded connector 43 to move along the axial direction to the inside of the connecting cavity 421, and the second sealing part 32 is provided with a movable interface 325 for the threaded connector 44 and the driving rod 45 to move out.

[0050] In this way, the driving rod 45 can be connected and disconnected by the forward and reverse rotation through the threaded connection head two 44. Since the screwing direction of the threaded connection head two 44 in the connection cavity two 422 is consistent with the rotating direction of the transmission member 42 moving along the axial direction into the inside of the connection cavity one 421, the driving rod 45 can rotate in the screwing direction to rotate the transmission member 42 in the same direction when locking, and the transmission member 42 drives the blocking part one 31 to move close to the blocking part two 32 when rotating, thereby realizing the compression of the elastic sealing part 33. When the driving rod 45 rotates in the reverse direction to disconnect, the driving rod 45 needs to overcome the resistance in the locked state and then overcome the resistance between the transmission member 42 and the threaded connection head one 43, so that the connection between the driving rod 45 and the transmission member 42 can be disconnected by the reverse rotation of the driving rod 45, and then the driving rod 45 and the threaded connection head two 44 are moved out through the movable interface 325. In the specific implementation process, the friction between the transmission member 42 and the threaded connection head one 43 is configured to be greater than the friction between the threaded connection head and the transmission member 42 in the locked state, so that the driving rod 45 can be easily rotated out, and the movement of the blocking part one 31 will not be caused at the same time.

[0051] Since the driving rod 45 can only control the transmission member 42 in one direction, in order to reset the blocking part one 31 as needed, the transmission member 42 is provided with a driving connection port 423 for inserting a dismounting tool at the port of the connection cavity two 422 or the cavity wall between the connection cavity two 422 and the connection cavity one 421.

[0052] In this way, the driving rod 45 can be connected and disconnected by the forward and reverse rotation through the threaded connection head two 44. Since the screwing direction of the threaded connection head two 44 in the connection cavity two 422 is consistent with the rotating direction of the transmission member 42 moving along the axial direction into the inside of the connection cavity one 421, the driving rod 45 can rotate in the screwing direction to rotate the transmission member 42 in the same direction when locking, and the transmission member 42 drives the blocking part one 31 to move close to the blocking part two 32 when rotating, thereby realizing the compression of the elastic sealing part 33. When the driving rod 45 rotates in the reverse direction to disconnect, the driving rod 45 needs to overcome the resistance in the locked state and then overcome the resistance between the transmission member 42 and the threaded connection head one 43, so that the connection between the driving rod 45 and the transmission member 42 can be disconnected by the reverse rotation of the driving rod 45, and then the driving rod 45 and the threaded connection head two 44 are moved out through the movable interface 325. In the specific implementation process, the friction between the transmission member 42 and the threaded connection head one 43 is configured to be greater than the friction between the threaded connection head and the transmission member 42 in the locked state, so that the driving rod 45 can be easily rotated out, and the movement of the blocking part one 31 will not be caused at the same time.

[0053] Please refer to Figure 3 , Figure 7 and Figure 9 In the embodiment of the present application, a conveying assembly is further included, which comprises an outer sleeve 5, a fastener one 51 and a fastener two 323. The driving rod 45 is movably arranged in the outer sleeve 5. The end of the outer sleeve 5 is provided with the fastener one 51. The fastener two 323 is arranged on the blocking part two 32. The fastener one 51 and the fastener two 323 are fastened and matched. The driving rod 45 movably passes through the fastener one 51 and the fastener two 323.

[0054] The buckle one 51 and the buckle two 323 can be buckled and unbuckled, and when buckled, the driving rod 45 passing through the buckle one 51 and the buckle two 323 can play a role in limiting release. The driving rod 45 and the outer sleeve 5 are both flexible, the driving rod 45 can move in the outer sleeve 5, so that the operation is better, and the buckle one 51 provided on the outer sleeve 5 can be fixed and driven and controlled with the driving rod 45 respectively, and the structure design is more reasonable.

[0055] Preferably, the buckle one 51 and the buckle two 323 are both L-shaped structures and are centrally symmetric, so that the buckle one 51 and the buckle two 323 can be buckled in a direction perpendicular to the axial direction, and after the driving rod 45 passes through the perforation 324 on the buckle one 51 and the buckle two 323, the locking can be realized, and after the driving rod 45 exits, the unlocking can be performed, and the operation is more convenient.

[0056] Further, the delivery assembly further comprises an outer sheath 2, and the outer sleeve 5 movably penetrates in the outer sheath 2.

[0057] The outer sheath 2 is a medium for the occlusion device to enter the human body blood vessel, which can deliver the occlusion device to the corresponding position in the blood vessel.

[0058] In some embodiments, the occlusion part one 31 is a tapered guide structure, and such a guide structure can facilitate the occlusion assembly 3 to better enter the break 12 of the aorta 1 for occlusion. In addition, the cross section of the annular mounting groove 34 is also a C-shaped structure, and the annular mounting groove 34 with the C-shaped structure can better guide the elastic sealing member 33 to deform radially during extrusion.

[0059] A use method of the vascular break occlusion device in the embodiment of the application:

[0060] 1. The occlusion part one 31 and the occlusion part two 32 are adjusted to the elongated state by inserting the driving connection port 423 with a dismounting tool according to the extension and contraction of the two, and the elastic sealing member 33 is in the axial extension state;

[0061] 2. The buckle one 51 and the buckle two 323 are connected, and the driving rod 45 is controlled to rotate so that the threaded connection head two 44 is selected into the connection cavity two 422 of the transmission member 42 and is preliminarily screwed;

[0062] 3. The main body of the vascular break occlusion device is delivered to the vicinity of the break 12 of the aorta 1 through the outer sheath 2, then the occlusion assembly 3 passes through the break 12 and makes the C-shaped port of the elastic sealing member 33 correspond to the pipe wall of the break 12;

[0063] 4. By rotating the driving rod 45 to the screwing direction, the blocking part one 31 and the blocking part two 32 are gradually switched to the contracted state, in the process, the pressing part is gradually pressed on the intima 11 wall from both sides of the intima 11 wall;

[0064] 5. After the elastic sealing part 33 is pressed and fixed, the driving rod 45 is first reversely rotated to be disconnected with the transmission member 42 and removed, then the connection between the fastener one 51 and the fastener two 323 is disconnected, finally the outer sleeve 5 and the outer sheath 2 are removed together, and the installation of the blocking device is completed.

[0065] The above is only the preferred embodiment of the present application, it should be pointed out that the above preferred embodiment should not be regarded as a limitation of the present application, the protection scope of the present application should be limited by the scope defined by the claims. For ordinary skilled in the art, several improvements and refinements can be made without departing from the spirit and scope of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An apparatus for occluding a vascular defect, comprising: The device comprises a blocking assembly and a driving assembly, the blocking assembly comprises a blocking part one, a blocking part two and an elastic sealing part, the blocking part one and the blocking part two are connected in an extendible and retractable manner and form an annular mounting groove with adjustable groove width in the axial direction between them, an annular elastic sealing part is arranged in the annular mounting groove, the driving assembly drives the blocking part one and the blocking part two to extend and retract to press the elastic sealing part, so that the elastic sealing part is switched from the axial extension state to the radial extension state; The cross section of the elastic sealing part is C-shaped, the elastic sealing part comprises thickened parts at both axial ends and a waist part between the thickened parts, the thickened parts extend outward in the radial direction to form pressing parts, and the pressing parts and the waist part are smoothly connected; Wherein, in the axial extension state, the elastic sealing part has a deformation movement tendency of inward contraction, in the radial extension state, the elastic sealing part has a deformation movement tendency of outward rolling in the radial direction, and the pressing parts make a pressing movement relative to the deformation movement tendency.

2. The vascular aperture sealing device of claim 1, wherein, The elastic sealing part is made of medical grade rubber material, and the surface of the elastic sealing part is provided with an anticoagulant coating and a hydrophilic coating.

3. The vascular aperture sealing device of claim 1, wherein, The thickness of the middle part of the waist part is smaller than the thickness of both ends of the waist part, and the thickness gradually increases from the middle part to both ends.

4. The vascular aperture sealing device of claim 1, wherein, The end of the blocking part one close to the blocking part two is provided with a tubular connecting part, the end of the blocking part two close to the blocking part one is provided with an annular groove for inserting the tubular connecting part, and the tubular connecting part is slidingly fitted in the annular groove.

5. The vascular aperture sealing device of claim 1, wherein, The driving assembly comprises a connecting shaft, a transmission member and a driving rod, the end of the connecting shaft is provided with a threaded connector one, the blocking part two is provided with a mounting cavity, the transmission member is rotationally arranged in the mounting cavity, the transmission member is provided with a connecting cavity one and a connecting cavity two in the axial direction, the threaded connector is screw-fitted in the connecting cavity one, and the driving rod is connected to the connecting cavity two to drive the transmission member to rotate.

6. The vascular aperture sealing device of claim 5, wherein, The driving rod is connected with a threaded connector two, the driving rod is screw-fitted in the connecting cavity two through the threaded connector two, the screwing direction of the threaded connector two in the connecting cavity two is consistent with the rotating direction of the transmission member to move the threaded connector one in the axial direction to the inside of the connecting cavity one, and the blocking part two is provided with a movable interface for the threaded connector two and the driving rod to move out.

7. The vascular aperture sealing device of claim 6, wherein, The transmission member is provided with a driving connection port for inserting a dismounting tool at the port of the connecting cavity two or the cavity wall between the connecting cavity two and the connecting cavity one.

8. The vascular aperture sealing device of claim 5, wherein, The device further comprises a delivery assembly, the delivery assembly comprises an outer sleeve, a fastener one and a fastener two, the driving rod is movably arranged in the outer sleeve, the end of the outer sleeve is provided with the fastener one, the blocking part two is provided with the fastener two, the fastener one and the fastener two are buckled and matched, and the driving rod movably passes through the fastener one and the fastener two.

9. The vascular aperture sealing device of claim 8, wherein, The delivery assembly further comprises an outer sheath, and the outer sleeve is movably arranged in the outer sheath.

10. The vascular aperture sealing device of claim 1, wherein The blocking part one is a conical guide structure. And / or, the cross section of the annular mounting groove is also C-shaped structure.

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