A device for sealing blood vessel ruptures

Abstract

This invention belongs to the field of medical devices and discloses a vascular rupture sealing device, including a sealing assembly and a driving assembly. The sealing assembly includes a first sealing part, a second sealing part, and an elastic sealing component. This invention enables the elastic sealing component to deform outwards when the first and second sealing parts compress it. This deformation causes the pressing part to extend outwards. The thickening reduces the rolling effect, allowing the pressing parts at both ends to move relative to each other and press against both sides of the aortic intima for sealing. Furthermore, the smaller diameter before deformation facilitates insertion into the rupture, making installation convenient, the structure simpler, and more effective.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a device for sealing blood vessel ruptures. Background Technology

[0002] The aorta has a three-layered composite membrane structure: the intima, media, and adventitia. The interior of the intima corresponds to the true lumen of the aorta. If the aortic intima ruptures, high-speed blood flow from the aorta can enter the space between the intima and media, tearing the aortic wall into layers and forming a false lumen near the rupture. This can easily lead to aortic wall rupture and bleeding, and even endanger life.

[0003] In existing technologies, there are generally two types of occlusion devices for treating this disease. One type involves covering and sealing the ruptured vessel wall with a long covered stent, where the rupture diameter is often less than 1 cm, while the stent used to cover this rupture is often 10 cm or even longer. Such a long stent coverage affects the elasticity of the vessel wall, especially for ruptures near the openings of aortic branches. The stent coverage can affect the blood supply to the branch vessels, often requiring multiple techniques to re-establish blood flow in the branch vessels, which is complex and affects the long-term patency of the branch vessels. The other type is an occlusion component that is axially compressible and elongated through weaving. It is equipped with a drive structure to control the state of the occlusion component. In the occlusion state, its cross-section is H-shaped, and the occlusion effect is better than the former. For example, there is a medical device with patent number CN222426109U. However, this device is currently the most expensive and structurally complex one on the market. It has high requirements for weaving technology, is difficult to weave, and has a relatively complex drive structure.

[0004] Therefore, there is a need for a sealing device that has a better sealing effect, a simpler structure, and a lower cost. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a vascular rupture sealing device to solve the problems of complex structure and high cost of existing sealing devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A vascular rupture sealing device includes a sealing assembly and a driving assembly. The sealing assembly includes a sealing part one, a sealing part two, and an elastic sealing component. The sealing part one and the sealing part two are telescopically connected and form an annular mounting groove with an adjustable width in the axial direction between them. An annular elastic sealing component is provided in the annular mounting groove. The driving assembly drives the sealing part one and the sealing part two to telescopically extend and compress the elastic sealing component, so that the elastic sealing component switches from an axially extended state to a radially extended state.

[0008] The elastic sealing component has a C-shaped cross section. The elastic sealing component includes thickened portions at both ends in the axial direction and a waist portion between the thickened portions. The thickened portions extend radially outward to form a pressing portion, and there is a smooth transition between the pressing portion and the waist portion.

[0009] When the elastic sealing component is in the axially extended state, it has an inward shrinking deformation tendency. When the elastic sealing component is in the radially extended state, it has a radially outward rolling deformation tendency. The pressing part performs a pressing action with relative movement following the deformation tendency.

[0010] In one 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 one possible implementation, the thickness of the middle part of the waist is less than the thickness of the two ends of the waist, and the thickness gradually increases from the middle to the two ends.

[0012] In one possible implementation, the end of the first sealing part near the second sealing part is provided with a tubular connecting part, and the end of the second sealing part near the first sealing part is provided with an annular groove for the tubular connecting part to be inserted, and the tubular connecting part is slidably fitted in the annular groove.

[0013] In a possible implementation, the drive assembly includes a connecting shaft, a transmission component, and a drive rod. The end of the connecting shaft is provided with a threaded connector, and the sealing part is provided with an installation cavity. The transmission component is rotatably disposed in the installation cavity. The transmission component is provided with a connecting cavity one and a connecting cavity two along the axial direction. The threaded connector is threadedly engaged in the connecting cavity one, and the drive rod is connected to the connecting cavity two to drive the transmission component to rotate.

[0014] In one possible implementation, the drive rod is connected to a threaded connector two, and the drive rod is threaded into the connecting cavity two through the threaded connector two. The tightening direction of the threaded connector two in the connecting cavity two is consistent with the rotation direction of the transmission component driving the threaded connector one to move axially into the connecting cavity one. The sealing part two is provided with a movable interface for the threaded connector two and the drive rod to move out.

[0015] In a possible implementation, the transmission member has a drive connection port for inserting a disassembly tool at the port of the second connecting cavity or on the cavity wall between the second connecting cavity and the first connecting cavity.

[0016] In a possible implementation, a conveying assembly is also included, which includes an outer sleeve, a first fastener, and a second fastener. The drive rod is movably inserted inside the outer sleeve. The end of the outer sleeve is provided with the first fastener, and the second fastener is provided on the second sealing part. The first fastener and the second fastener are fastened together, and the drive rod movably passes through the first fastener and the second fastener.

[0017] In a possible implementation, the delivery assembly further includes an outer sheath, the outer sleeve being movably inserted within the outer sheath.

[0018] In one possible implementation, the blocking part is a tapered guide structure;

[0019] And / or, the cross-section of the annular mounting groove is also C-shaped.

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

[0021] The vascular rupture sealing device of the present invention utilizes the deformation characteristics of an annular elastic seal under axial pressure, and thickens both ends to form pressing portions. This allows the elastic seal to roll outwards when the sealing portions one and two compress the elastic seal assembly. This deformation causes the pressing portions to extend outwards. The thickening reduces the rolling effect, allowing the pressing portions at both ends to move relative to each other and press against both sides of the aortic intima for sealing. Furthermore, the small diameter before deformation makes it easy to insert into the rupture. The device is easy to install, has a simpler and more effective structure, and the sealing portions one and two can also play an auxiliary sealing role, resulting in better sealing effect and lower cost.

[0022] Moreover, by using medical-grade rubber materials with anticoagulant and hydrophilic coatings to make elastic sealing components, they can be better used in vascular environments while having the required deformation characteristics. Furthermore, the gradually varying thickness of the waist can reduce the rolling force during deformation, thereby better compressing the vascular intima.

[0023] Meanwhile, the drive rod of the drive assembly can control the extension and retraction of the first and second sealing parts by rotation, which is convenient to adjust. Furthermore, the drive rod is in a tightened state when controlled to retract through the transmission component which also has a connecting cavity 2. In this state, the compression of the elastic sealing component by the first and second sealing parts can be completed. When the drive rod rotates in the opposite direction, the drive rod can be disengaged from the transmission component, which makes it easy to disconnect the drive rod from the sealing assembly. The operation is convenient and quick. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a blood vessel rupture sealing device during installation.

[0025] Figure 2This is a schematic cross-sectional view of a blood vessel rupture sealing device in an axially extended state.

[0026] Figure 3 This is a schematic cross-sectional view of a blood vessel rupture sealing device in a radially extended state;

[0027] Figure 4 This is a perspective view of a vascular rupture sealing device, showing a sealing part 1 and a sealing part 2, without showing an elastic sealing component;

[0028] Figure 5 A schematic diagram illustrating the principle of an elastic sealing component of a blood vessel rupture sealing device switching from an axially extended state to a radially extended state;

[0029] Figure 6 A cross-sectional schematic diagram of the sealing part of a blood vessel rupture sealing device;

[0030] Figure 7 This is a cross-sectional schematic diagram of the second sealing part of a blood vessel rupture sealing device;

[0031] Figure 8 This is a cross-sectional schematic diagram of the drive assembly of a blood vessel rupture sealing device;

[0032] Figure 9 This is a schematic cross-sectional view of the connection between fastener one and fastener two in a blood vessel rupture sealing device.

[0033] In the diagram: 1-Aorta; 11-Intima; 12-Trench; 2-Outer sheath; 3-Occlusion assembly; 31-Occlusion part one; 311-Tubular connection part; 32-Occlusion part two; 321-Annular groove; 322-Installation cavity; 323-Fastener two; 324-Perforation; 325-Moving interface; 33-Elastic sealing component; 331-Thickened part; 332-Waist; 34-Annular mounting groove; 4-Drive assembly; 41-Connecting shaft; 42-Transmission component; 421-Connecting cavity one; 422-Connecting cavity two; 423-Drive connection port; 43-Threaded connector one; 44-Threaded connector two; 45-Drive rod; 5-Outer sleeve; 51-Fastener one. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to specific embodiments.

[0035] Please refer to Figure 1-9As shown, an embodiment of this application provides a vascular rupture 12 sealing device, including a sealing component 3 and a driving component 4. The sealing component 3 includes a sealing part 31, a sealing part 32, and an elastic sealing component 33. The sealing part 31 and the sealing part 32 are telescopically connected and form an annular mounting groove 34 with an adjustable width in the axial direction between them. An annular elastic sealing component 33 is provided in the annular mounting groove 34. The driving component 4 drives the sealing part 31 and the sealing part 32 to telescopically compress the elastic sealing component 33, so that the elastic sealing component 33 switches from an axially extended state to a radially extended state.

[0036] The sealing component 3 is used to seal the rupture 12 of the aorta 1 by clamping the intima 11 wall of the aorta 1 from the inside of the rupture 12. The sealing component 3 consists of sealing part 31 and sealing part 32 as the main sealing body, and an elastic sealing component 33 is used to press and seal the intima 11 wall of the aorta 1 from the circumferential side. Sealing part 31 and sealing part 32 are telescopically connected, meaning they can move relative to each other, and this relative movement compresses the elastic sealing component 33 in the circumferential direction, causing it to deform. The elastic sealing component 33 has an annular structure, or a sleeve-like structure, and is installed in an annular mounting groove 34. Because sealing part 31 and sealing part 32 are telescopic, the width of the annular mounting groove 34 is adjustable in the axial direction. The drive component 4 is used to drive the sealing part 31 and sealing part 32 to telescopically extend and retract. The elastic sealing component 33 is elastic. When it is not subjected to axial compression in the annular mounting groove 34, it is in a radially extended state. In this state, the elastic sealing component 33 tightens inward and fits into the annular mounting groove 34. When subjected to axial compression, it switches to a radially extended state. In this state, the elastic sealing component 33 deforms radially.

[0037] It is understandable that for sleeve-shaped elastic components, such as those made of rubber, when subjected to axial compression, their ends will usually deform outward. This is mainly due to the specific characteristics of the elastic material, which contracts in the direction of force when compressed, while expanding radially due to the Poisson effect. When the axial pressure exceeds a critical value, the elastic component tends to fold outward to release stress due to stress concentration and lack of radial restraint.

[0038] Based on this, in order to better utilize the characteristics of such elastic components to achieve inward-outward pressing and fixation at the opening 12, in the embodiments of this application, the cross-section of the elastic sealing component 33 is C-shaped. The elastic sealing component 33 includes thickened portions 331 located at both ends of the axial direction and waist portions 332 located between the thickened portions 331. The thickened portions extend radially outward to form pressing portions, and the pressing portions and waist portions 332 transition smoothly. In the axially extended state, the elastic sealing component 33 has an inward contraction deformation tendency, and in the radially extended state, the elastic sealing component 33 has a radially outward rolling deformation tendency. The pressing portions perform a pressing action with relative movement following the deformation movement tendency.

[0039] The elastic sealing component 33 has a C-shaped cross-section, which facilitates radial deformation under axial pressure, thus achieving the desired shape. The elastic sealing component 33 has varying thicknesses at different locations; end thickening reduces the rolling force during radial deformation. This reduced rolling force acts as a force to move the thickened portion 331 towards another thickened portion 331, thereby achieving the pressing action. Furthermore, the thickened pressing portion can extend perpendicular to the axial direction in its free state, allowing for better compression and a larger release area when the pressing portions adhere to each other or contact the intima 11 wall of the aorta 1, resulting in a better sealing effect. The smooth transition between the pressing portion and the waist portion 332 facilitates the transfer of radial deformation to the pressing portion for the pressing action. Therefore, the elastic sealing component 33 can switch from an extended state to a radially extended state. When the elastic sealing component 33 is in the axially extended state, it has an inward contraction deformation tendency. This movement tendency allows the waist 332 of the elastic sealing component 33 to be more extended, which also facilitates the transmission of deformation stress in the radial direction. When the elastic sealing component 33 is in the radially extended state, it has an outward rolling deformation tendency. The pressing part performs a pressing action with relative movement following the deformation movement tendency.

[0040] The above technical solution utilizes the deformation characteristics of the annular elastic seal under axial pressure, and by thickening both ends to form a pressing part, the elastic seal will roll outward and deform when the sealing part 31 and sealing part 32 compress the elastic seal assembly. This deformation will cause the pressing part to extend outward. Due to the thickening, the rolling effect is reduced, allowing the pressing parts at both ends to move relative to each other and press against both sides of the intima 11 of the aorta for sealing. Furthermore, the smaller diameter before deformation makes it easier to insert into the rupture 12, making installation convenient, the structure simpler and more effective. At the same time, the sealing part 31 and sealing part 32 can also play an auxiliary sealing role, resulting in better sealing effect and lower cost.

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

[0042] In this way, medical-grade rubber materials have better medical performance requirements, and the anticoagulant and hydrophilic coatings applied to them can better adapt to the vascular environment. The anticoagulant coating can be applied with an active anticoagulant, specifically an active anticoagulant or an inert anticoagulant material. The hydrophilic coating can reduce frictional damage to the blood vessel wall during implantation. It can be a polymer coating formed by hydrogel alginate, or a multifunctional coating of hyaluronic acid-dopamine-PLGA composite system. This layer has both hydrophilic and anticoagulant enhancements, making it more suitable for occlusion devices.

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

[0044] In this way, the thickness setting of the waist 332, which is small in the middle and large at both ends, can facilitate the radial deformation of the elastic sealing component 33 under a small compressive force, reduce the difficulty of operation, and also make it easier for the pressing part to perform the pressing action.

[0045] In a preferred embodiment of a telescopic connection between the first sealing part 31 and the second sealing part 32, the first sealing part 31 is provided with a tubular connecting part 311 at one end near the second sealing part 32, and the second sealing part 32 is provided with an annular groove 321 for the tubular connecting part 311 to be inserted at one end near the first sealing part 31, and the tubular connecting part 311 is slidably fitted in the annular groove 321.

[0046] By providing an annular groove 321 in the second sealing part 32 to cooperate with the tubular connecting part 311, the distance between the first sealing part 31 and the second sealing part 32 in the retracted state can be minimized, thereby making the pressing tighter and the fixing effect better.

[0047] In order to realize the extension and retraction drive of the first sealing part 31 and the second sealing part 32 by the drive assembly 4, combined with Figure 2 , Figure 3 and Figure 7 As shown in the embodiment of this application, the drive assembly 4 includes a connecting shaft 41, a transmission component 42, and a drive rod 45. The end of the connecting shaft 41 is provided with a threaded connector 43. The sealing part 32 is provided with an installation cavity 322. The transmission component 42 is rotatably disposed in the installation cavity 322. The transmission component 42 is provided with a first connecting cavity 421 and a second connecting cavity 422 along the axial direction. The threaded connector is threadedly engaged in the first connecting cavity 421. The drive rod 45 is connected to the second connecting cavity 422 to drive the transmission component 42 to rotate.

[0048] The connecting shaft 41 is fixed to the first sealing part 31, and its end is provided with a threaded connector 43. The transmission member 42 is disposed in the second sealing part 32 through the mounting cavity 322 and can rotate within the mounting cavity 322. The transmission member 42 has two threaded cavities, namely the first connecting cavity 421 and the second connecting cavity 422. The threaded connector 43 is threadedly connected in the first connecting cavity 421. Since the transmission member 42 and the threaded connector are threadedly connected and the first sealing part 31 and the second sealing part 32 can only move relative to each other, when the transmission member 42 rotates, the transmission member 42 can drive the first sealing part 31, which is integrated with the threaded connector, to move. Thus, the extension and retraction of the first sealing part 31 and the second sealing part 32 can be controlled by rotating in both directions, thereby realizing the squeezing action of the elastic sealing component 33. The drive rod 45 is used to drive the transmission member 42 to rotate. The rotation of the drive rod 45 causes the transmission member 42 to rotate.

[0049] Furthermore, to facilitate the removal of the drive rod 45 after the sealing is completed, the drive rod 45 is connected to a threaded connector 44. The drive rod 45 is threadedly engaged 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 drive threaded connector 43 of the transmission component 42 moving axially into the connecting cavity 421. The sealing part 32 is provided with a movable interface 325 for the threaded connector 44 and the drive rod 45 to move out.

[0050] In this way, the drive rod 45 can lock and unlock the connection through the threaded connector 44 by rotating in both directions. Since the tightening direction of the threaded connector 44 in the connecting cavity 422 is the same as the rotation direction of the transmission member 42 driving the threaded connector 43 to move axially into the connecting cavity 421, the drive rod 45 can rotate in the tightening direction to make the transmission member 42 rotate in the same direction. When rotating, the transmission member 42 drives the sealing part 31 to move closer to the sealing part 32, thereby compressing the elastic sealing member 33. When the drive rod 45 rotates in the opposite direction to unlock the connection, the drive rod 45 needs to overcome the resistance in the locked state and then the resistance of the transmission member 42 and the threaded connector 43. Therefore, the connection with the transmission member 42 can be unlocked by the reverse rotation of the drive rod 45. Then, the drive rod 45 and the threaded connector 44 can be moved out together through the movable interface 325. In the specific implementation process, the frictional force between the transmission component 42 and the threaded connector 43 is configured to be greater than the frictional force between the threaded connector and the transmission component 42 in the locked state. This can facilitate the easy unscrewing of the drive rod 45 and prevent the sealing part 31 from moving at the same time.

[0051] Since the drive rod 45 can only control the transmission component 42 in one direction, in order to reset the sealing part 31 as needed, the transmission component 42 is provided with a drive connection port 423 for inserting a disassembly tool at the port of the second connecting cavity 422 or in the cavity wall between the second connecting cavity 422 and the first connecting cavity 421.

[0052] In this way, the rotation of the transmission component 42 can be controlled by inserting a disassembly tool into the drive connection port 423, which facilitates the adjustment of the extension and retraction of the first sealing part 31 and the second sealing part 32 as needed. Specifically, the drive connection port 423 can be a hexagonal structure.

[0053] Please refer to Figure 3 , Figure 7 and Figure 9 In the embodiments of this application, a conveying assembly is also included. The conveying assembly includes an outer sleeve 5, a first fastener 51, and a second fastener 323. The drive rod 45 is movably inserted into the outer sleeve 5. The end of the outer sleeve 5 is provided with the first fastener 51, and the second sealing part 32 is provided with the second fastener 323. The first fastener 51 and the second fastener 323 are fastened together. The drive rod 45 moves through the first fastener 51 and the second fastener 323.

[0054] The fastener 51 and fastener 323, which are engaged and disengaged, allow for fastening and disengagement. During engagement, the drive rod 45 passes through both fastener 51 and fastener 323, thus restricting release. Both the drive rod 45 and the outer sleeve 5 are flexible, allowing the drive rod 45 to move within the outer sleeve 5 for better operation. Furthermore, the fastener 51 on the outer sleeve 5 allows for both fixation and drive control of the drive rod 45, resulting in a more rational structural design.

[0055] Preferably, both fastener 51 and fastener 323 are L-shaped structures and are centrally symmetrical. This allows them to be fastened together in a direction perpendicular to the axial direction. The fasteners 51 and 323 can be locked after the drive rod 45 passes through the through hole 324 on fastener 51 and fastener 323. The fasteners can be unlocked after the drive rod 45 is removed, making the operation more convenient.

[0056] Furthermore, the delivery assembly also includes an outer sheath 2, and the outer sleeve 5 is movably inserted inside the outer sheath 2.

[0057] The outer sheath 2 is the medium through which the occlusion device enters the human blood vessel, and it can deliver the occlusion device to the corresponding position in the blood vessel.

[0058] In some embodiments, the sealing part 31 is a conical guide structure, which facilitates the sealing component 3 to better enter the rupture 12 of the aorta 1 for sealing. Furthermore, the annular mounting groove 34 also has a C-shaped cross-section, which facilitates better guidance of the elastic sealing component 33 towards radial deformation during the compression process.

[0059] A method of using a blood vessel rupture sealing device according to an embodiment of this application:

[0060] 1. Based on the extension and retraction of the first sealing part 31 and the second sealing part 32, the disassembly tool is inserted into the drive connection port 423 to adjust both to the extended state, while the elastic sealing component 33 is in the axial extension state.

[0061] 2. Connect fastener 1 51 and fastener 2 323, and control the drive rod 45 to rotate so that its threaded connector 2 44 is inserted into the connecting cavity 2 422 of the transmission component 42 and initially tightened;

[0062] 3. The main body of the vascular rupture 12 sealing device is delivered to the vicinity of the rupture 12 of the aorta 1 through the outer sheath tube 2. Then the sealing component 3 passes through the rupture 12 and makes the C-shaped opening of the elastic sealing component 33 correspond to the wall of the rupture 12.

[0063] 4. By rotating the drive rod 45 in the tightening direction, the first occlusion part 31 and the second occlusion part 32 are gradually switched to the contracted state. During this process, the pressing part is gradually pressed onto the wall of the intima 11 from both sides of the intima 11.

[0064] 5. After the elastic sealing component 33 is pressed and fixed, first rotate the drive rod 45 in the opposite direction to disconnect it from the transmission component 42 and remove it. Then, disconnect the fastener 51 and fastener 323. Finally, remove the outer sleeve 5 and the outer sheath 2 together to complete the installation of the sealing device.

[0065] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be considered as limitations on the present invention, and the scope of protection of the present invention should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

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.

Images