Artificial blood vessel stabilizing device

Abstract

The invention discloses an artificial blood vessel stabilizing device. The artificial blood vessel stabilizing device is used for being connected with an artificial blood vessel in a matched mode, the artificial blood vessel is provided with a first anastomosis end and a second anastomosis end which are back to back in the axial direction of the artificial blood vessel, and the artificial blood vessel stabilizing device comprises a supporting sleeve which is in a through shape in the axial direction of the supporting sleeve and is provided with a first connecting end and a second connecting end which are back to back in the axial direction of the supporting sleeve; the supporting sleeve is arranged on the outer side of the artificial blood vessel in a sleeving mode, the first anastomosis end is connected with the first connecting end, and the second anastomosis end is connected with the second connecting end. The artificial blood vessel stabilizing device can provide reliable support for the artificial blood vessel, reduces swing and deformation of the artificial blood vessel, and improves the stability of the artificial blood vessel.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and in particular relates to an artificial blood vessel stabilization device. Background Art

[0002] Prosthetic heart valve implantation is a treatment that replaces or repairs a diseased heart valve to restore heart function.

[0003] For some patients with a small valve annulus or left ventricular stenosis, in order to achieve the implantation of a larger valve, an artificial valve will be implanted above the valve annulus during the artificial valve implantation surgery and connected to an artificial blood vessel to improve the hemodynamic effect.

[0004] However, artificial blood vessels are soft tubes that are easy to swing and deform, and have poor stability, which affects the postoperative recovery effect. Summary of the Invention

[0005] The present application provides an artificial blood vessel stabilization device, which can provide reliable support for the artificial blood vessel, reduce the swing and deformation of the artificial blood vessel, and improve its stability.

[0006] The present application provides an artificial blood vessel stabilization device, which is used to cooperate with an artificial blood vessel, wherein the artificial blood vessel has a first anastomotic end and a second anastomotic end opposite to each other along its axial direction, and the artificial blood vessel stabilization device includes: The support sleeve is through-shaped along its axial direction, and has a first connecting end and a second connecting end opposite to each other along its axial direction; the support sleeve is sleeved on the outside of the artificial blood vessel, the first anastomotic end is connected to the first connecting end, and the second anastomotic end is connected to the second connecting end.

[0007] In the artificial blood vessel stabilization device as described above, the support sleeve is a mesh sleeve, and a plurality of evenly distributed through holes penetrating the support sleeve in a radial direction are formed on the wall of the support sleeve.

[0008] The artificial blood vessel stabilization device as described above, wherein the first connecting end is connected to the first anastomotic end via a first connecting member, the first connecting member is annular, and the radial dimension of the first connecting member can change with the expansion of the artificial blood vessel; The second connecting end is connected to the second anastomotic end via a second connecting member, and the second connecting member is an annular structure with a fixed radial size.

[0009] The artificial blood vessel stabilization device as described above, wherein the first connecting member comprises a plurality of arc-shaped elements, each of the arc-shaped elements having a first end and a second end along its circumference, the first end having an insertion hole, the second end forming an insertion portion, the insertion portion of each arc-shaped element being inserted into an insertion hole of the arc-shaped element, and the plurality of arc-shaped elements being sequentially connected to form a ring-shaped structure; During the expansion process, the insertion depth of the plug portion into the corresponding plug hole gradually decreases.

[0010] The artificial blood vessel stabilization device as described above, wherein the first connecting member includes a plurality of arc-shaped elements and a plurality of corrugated elements, a corrugated element is fixedly connected between every two adjacent arc-shaped elements, the arc-shaped elements and the corrugated elements are alternately arranged and connected to form an annular structure, and the corrugated element has a plurality of folds along the circumference of the annular structure; During the expansion process, the folds gradually unfold.

[0011] The artificial blood vessel stabilization device as described above, wherein the surface of the first connecting member is covered with an elastic protective sleeve.

[0012] The artificial blood vessel stabilization device as described above, wherein the artificial blood vessel stabilization device further comprises a righting structure, wherein the righting structure is connected to the second connecting end of the support sleeve; Along the axial direction of the support sleeve, the centralizing structure is coaxially arranged with the support sleeve; Along the radial direction of the support sleeve, the radial dimension of the centralizing structure is greater than the radial dimension of the support sleeve, and the centralizing structure can expand or contract along the radial direction of the support sleeve.

[0013] The artificial blood vessel stabilization device as described above, wherein the righting structure comprises: a connecting ring, detachably connected to the second connecting end; a centralizing member, formed by weaving a plurality of warp threads distributed along the circumference of the support sleeve and a plurality of weft threads distributed along the axial direction of the support sleeve, wherein the first end of each of the warp threads is fixedly connected to the connecting ring, and the second end of each of the warp threads is fixedly connected; The radial dimension of the centralizing member can be adjusted by adjusting the distance between the second end of each of the warp wires and the connecting ring.

[0014] The artificial blood vessel stabilization device as described above, wherein the correcting member is made of plastic material; The centralizing member has an expanded state and a contracted state. In the contracted state, the warps are contracted and approach each other, and the distance between the second end of each warp and the connecting ring is the largest. The centralizing member has a columnar structure. In the expanded state, compared to the contracted state, the distance between the second end of each warp thread and the connecting ring is reduced, each warp thread is plastically deformed and moves away from each other, and the plastically deformed diameter of each weft thread increases.

[0015] The artificial blood vessel stabilization device as described above, wherein the warp is an arc-shaped elastic member and the weft is an annular flexible member; The said righting structure further comprises a flexible limiting ring; The straightening member has an expanded state and a contracted state. In the contracted state, the warp threads are elastically deformed and contracted toward each other, so that the straightening member has a columnar structure. The flexible limiting ring is sleeved on the outside of each warp thread. In the expanded state, the flexible limiting ring is separated from the straightening member, and the warps are expanded away from each other to form an ellipsoidal or spherical structure.

[0016] The artificial blood vessel stabilization device provided in the present application is provided with a support sleeve which is sleeved on the outside of the artificial blood vessel, and the first anastomotic end of the artificial blood vessel is connected to the first connecting end of the support sleeve, and the second anastomotic end of the artificial blood vessel is connected to the second connecting end of the support sleeve. The support sleeve can effectively provide support for the artificial blood vessel, reduce the swinging and deformation of the artificial blood vessel, and improve the stability of the artificial blood vessel after implantation.

[0017] Furthermore, the artificial blood vessel stabilization device provided in the present application, by providing a straightening structure for use in conjunction with a support sleeve, can further maintain the distance between the support sleeve and the atrial wall, thereby reducing the situation where the human blood vessels and the support sleeve compress the atrial wall, causing blood reflux obstruction or even deformation of the atrial wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 An exploded view of the support sleeve and the artificial blood vessel of the artificial blood vessel stabilization device according to an embodiment of the present application; Figure 2 This is a schematic structural diagram of a first connecting member of a support sleeve of an artificial blood vessel stabilization device according to an embodiment of the present application; Figure 3 This is another structural schematic diagram of the first connecting member of the support sleeve of the artificial blood vessel stabilization device according to an embodiment of the present application; Figure 4 Another structural schematic diagram of the artificial blood vessel stabilization device provided in an embodiment of the present application.

[0020] Description of Figure Numbers: 1. Artificial blood vessel; 11. First anastomotic end; 12. Second anastomotic end; 2. Support sleeve; 21. First connecting end; 22. Second connecting end; 23. First connecting member; 231. Arc-shaped element; 2311. First end; 23111. Insertion hole; 2312. Second end; 23121. Insertion portion; 232. Corrugated element; 233. Elastic protective sleeve; 24. Second connecting member; 3. Righting structure; 31. Connecting ring; 32. Righting piece; 321. Warp; 322. Weft. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0022] The "chimney technique" for mitral valve replacement is primarily designed to address the risks of graft mismatch and left ventricular rupture during traditional implantation, often caused by an undersized annulus or small left ventricle. By implanting the prosthetic valve 4 to 5 mm above the annulus and connecting it to a flexible vascular graft (such as a Dacron tube), a larger valve can be implanted. This technique is particularly suitable for children, low-weight patients, and complex cases (such as those with a calcified annulus or recurrent regurgitation). Advantages include a reduced risk of left ventricular rupture, fewer secondary surgeries, and improved hemodynamics.

[0023] Although this technology can solve specific anatomical problems, its popularity is very low due to the complexity of the operation and the risk of complications. It can only be used as a supplement to traditional methods rather than as the first choice. There are three reasons for its low popularity: 1. If the artificial blood vessel is too long, it will lead to poor stability, left and right swinging, and there is a risk of valve jamming; if the artificial blood vessel is too short, the opening of the artificial valve will be limited; 2. The anastomosis between the artificial blood vessel and the valve ring will occupy the volume of the left atrium and be close to the atrial wall, which may contact and compress the atrial wall, resulting in obstruction of blood return; 3. Artificial blood vessels are prone to deformation and may squeeze the pulmonary veins, causing pulmonary vein stenosis.

[0024] The present invention mainly solves the above problems: preventing the chimney from swinging, preventing the pipe from being too close to the posterior wall of the left atrium, and preventing the left atrium from deforming and causing pulmonary vein stenosis.

[0025] In view of the problems existing in the above-mentioned related technologies, an embodiment of the present application provides an artificial blood vessel 1 stabilization device, which can provide reliable support for the artificial blood vessel 1, reduce the swing and deformation of the artificial blood vessel 1, improve the stability of the artificial blood vessel 1, and ensure the post-operative recovery effect.

[0026] like Figure 1 As shown, the present application provides an artificial blood vessel 1 stabilization device, which is used to cooperate with the artificial blood vessel 1. The artificial blood vessel 1 has a first anastomotic end 11 and a second anastomotic end 12 opposite to each other along its axial direction. The first anastomotic end 11 is used to anastomose with the artificial valve, and the second anastomotic end 12 is used to anastomose with human tissue.

[0027] The artificial blood vessel 1 stabilization device includes a support sleeve 2 , which is used to provide support for the artificial blood vessel 1 .

[0028] The supporting sleeve 2 is through-shaped along its axial direction, and has a first connecting end 21 and a second connecting end 22 opposite to each other along its axial direction.

[0029] During installation, the axial direction of the support sleeve 2 is the same as that of the artificial blood vessel 1 , that is, the extension directions of the two are the same.

[0030] The support sleeve 2 is sleeved on the outside of the artificial blood vessel 1, with the first anastomotic end 11 connected to the first connecting end 21, and the second anastomotic end 12 connected to the second connecting end 22. By fixing the first and second anastomotic ends 11, 12 of the artificial blood vessel 1 in this manner, the artificial blood vessel 1 can be effectively deployed and fixed along its axial direction, reducing deformation and shortening of the artificial blood vessel 1. At the same time, the support sleeve 2 provides support for the artificial blood vessel 1 on the outside of the artificial blood vessel 1, effectively preventing the artificial blood vessel 1 from deforming and swinging, thereby improving the stability of the artificial blood vessel 1.

[0031] like Figure 1 As shown, in the embodiment of the present application, the artificial blood vessel 1 stabilization device is provided, wherein the support sleeve 2 is a mesh sleeve, and a plurality of through holes are formed on the wall of the support sleeve 2 in a uniform distribution and radially penetrate the support sleeve 2. This can effectively reduce the weight of the support sleeve 2 and achieve lightweight support sleeve 2.

[0032] Optionally, the supporting sleeve 2 is formed by cross-weaving a plurality of linear structures, which has the advantages of being easy to process and easy to form a cylindrical structure with uniform structure.

[0033] Optionally, the support sleeve 2 can be made of polyester material, which has good strength and elastic recovery ability, is not easy to deform during use, and can quickly restore its original shape after deformation; and polyester material has good chemical stability and a long service life.

[0034] like Figure 1As shown, an artificial blood vessel 1 stabilization device is provided in an embodiment of the present application, wherein the first connecting end 21 is connected to the first anastomotic end 11 via a first connecting member 23 , and the second connecting end 22 is connected to the second anastomotic end 12 via a second connecting member 24 .

[0035] The first connecting member 23 is annular, and a radial dimension of the first connecting member 23 can be expanded.

[0036] The second connecting member 24 is a ring-shaped structure for fixing the size.

[0037] During implantation, the first connecting member 23 connecting the first connecting end 21 and the first anastomotic end 11 anastomoses with the artificial valve and the patient's ventral tissue. For younger patients, as their autologous tissue grows with age, the expandable first connecting member 23 allows for self-adjustment to accommodate the growth of the patient's autologous tissue, preventing the first connecting member 23 from being unable to adjust and thus hindering autologous tissue growth.

[0038] like Figure 2 As shown, in the artificial blood vessel 1 stabilization device provided in an embodiment of the present application, the first connecting member 23 includes a plurality of arc-shaped elements 231 , and the plurality of arc-shaped elements 231 are spliced to form a roughly ring-shaped structure.

[0039] Specifically, the arc-shaped element 231 has a first end 2311 and a second end 2312 along its circumference. Along the direction from the first end 2311 to the second end 2312, the arc-shaped element 231 is tapered. A plug-in hole 23111 is recessed on the end surface of the first end 2311, and a plug-in portion 23121 is formed at the second end 2312. The plug-in portion 23121 of each arc-shaped element 231 is inserted into the plug-in hole 23111 of an adjacent arc-shaped element 231, so that multiple arc-shaped elements 231 are connected in sequence to form a ring structure.

[0040] During the expansion of the patient's autologous tissue, the insertion depth of the connecting portion 23121 in the corresponding connecting hole 23111 gradually decreases; that is, the connecting portion 23121 gradually withdraws from the corresponding connecting hole 23111, so that the diameter of the annular structure gradually increases to adapt to the growth of the patient's autologous tissue and other conditions.

[0041] During the implantation process, the first connecting member 23 can be fitted to the patient's autologous tissue in a state of minimum diameter and can be expanded as the patient's autologous tissue grows.

[0042] like Figure 3As shown, the artificial blood vessel 1 stabilization device provided in the embodiment of the present application, wherein the first connecting member 23 includes a plurality of arc-shaped elements 231 and a plurality of corrugated elements 232, wherein a corrugated element 232 is fixedly connected between every two adjacent arc-shaped elements 231, and the arc-shaped elements 231 and the corrugated elements 232 are alternately arranged and connected to form an annular structure, and the corrugated element 232 has a plurality of folds along the circumference of the annular structure; During the expansion of the patient's autologous tissue, the folds gradually unfold and the diameter of the annular structure gradually increases to adapt to the growth of the patient's autologous tissue.

[0043] During the implantation process, the first connecting member 23 can be fitted to the patient's autologous tissue in a state of minimum diameter and can be expanded as the patient's autologous tissue grows.

[0044] In some embodiments, the second connecting member 24 may also adopt the same structure as the first connecting member 23 to accommodate the growth of the patient's own tissue.

[0045] In the artificial blood vessel stabilization device provided in the embodiment of the present application, the surface of the first connecting member 23 is covered with an elastic protective sleeve 233. The provision of the elastic protective sleeve 233 improves the smoothness of the surface of the first connecting member 23, reduces the possibility of the first connecting member 23 interfering with the patient's own tissue and causing jamming during expansion, and simultaneously maintains the shape and structure of the first connecting member 23, preventing separation of two adjacent arc-shaped elements 231 or deformation and distortion of the corrugated element 232.

[0046] like Figure 4 As shown, the artificial blood vessel 1 stabilization device provided in the embodiment of the present application further includes a righting structure 3, and the righting structure 3 is connected to the second connection end 22 of the support sleeve 2; Along the axial direction of the support sleeve 2, the centralizing structure 3 is coaxially arranged with the support sleeve 2; Along the radial direction of the support sleeve 2 , the radial dimension of the centralizing structure 3 is larger than the radial dimension of the support sleeve 2 , and the centralizing structure 3 can expand or contract along the radial direction of the support sleeve 2 .

[0047] During the implantation process in the patient's body, the righting structure 3 is arranged inside the patient's left atrium and contacts the atrial wall to achieve positioning. The positioned righting structure 3 provides support and righting to the support sleeve 2 connected to the righting structure 3, and maintains the distance between the support sleeve 2 and the atrial wall, which is equivalent to forming an annulus between the support sleeve 2 and the atrial wall to prevent the support sleeve 2 from swinging and compressing the atrial wall, thereby ensuring smooth blood return.

[0048] like Figure 4As shown, an artificial blood vessel 1 stabilization device provided in an embodiment of the present application, wherein the righting structure 3 includes a connecting ring 31 and a righting member 32 .

[0049] The connecting ring 31 is detachably connected to the second connecting end 22 ; optionally, the connecting ring 31 is detachably screwed to the second connecting member 24 via threads.

[0050] The centralizing member 32 is formed by weaving a plurality of warp threads 321 spaced apart along the circumference of the support sleeve 2 and a plurality of weft threads 322 spaced apart along the axial direction of the support sleeve 2. Each warp thread 321 is generally arc-shaped, and each weft thread 322 is ring-shaped. The first ends 2311 of the warp threads 321 are fixedly connected to the connecting ring 31 , respectively, and the second ends 2312 of the warp threads 321 are fixedly connected together.

[0051] By adjusting the distance between the second end 2312 of each meridian 321 and the connecting ring 31 , the radial size of the centralizing member 32 can be adjusted so that the centralizing member 32 fits the size of the patient's left atrium.

[0052] Optionally, in the artificial blood vessel 1 stabilization device provided in an embodiment of the present application, the straightening member 32 is made of plastic material.

[0053] Specifically, the straightening member 32 has an expanded state and a contracted state. In the contracted state, the meridians 321 contract close to each other, and the distance between the second end 2312 of each meridian 321 and the connecting ring 31 is the largest. The straightening member 32 has a columnar structure; at this time, the radial dimension structure is small, which facilitates the implantation of the straightening structure 3 into the patient's body.

[0054] In the expanded state, compared with the contracted state, the distance between the second end 2312 of each meridian 321 and the connecting ring 31 is reduced, each meridian 321 is plastically deformed and moves away from each other, and the diameter of each latitude 322 is plastically deformed and increases, so that the overall straightening body is roughly spherical or ellipsoidal to adapt to the shape of the left atrium.

[0055] Optionally, in the artificial blood vessel 1 stabilization device provided in an embodiment of the present application, the warp 321 is an arc-shaped elastic member, and the weft 322 is an annular flexible member.

[0056] The centralizing member 32 has an expanded state and a retracted state. The centralizing structure 3 further includes a flexible limiting ring to maintain the retracted state of the centralizing member 32 .

[0057] Specifically, in the contracted state, each meridian 321 elastically deforms and contracts close to each other, so that the straightening member 32 has a columnar structure. A flexible limiting ring is arranged on the outside of each meridian 321 to keep each meridian 321 in position, so that the straightening member 32 remains in the columnar structure for easy implantation into the patient's body.

[0058] In the expanded state, the flexible limiting ring is separated from the straightening member 32, and the meridians 321 are no longer constrained by the flexible limiting ring and can expand away from each other to form an ellipsoid or spherical structure to adapt to the shape of the left atrium.

[0059] Optionally, the flexible limiting ring can be separated from the righting member 32 by shearing or dissolving in blood to achieve the deployment of the righting body.

[0060] The artificial blood vessel 1 stabilization device provided in the present application is provided with a support sleeve 2 which is sleeved on the outside of the artificial blood vessel 1, and the first anastomotic end 11 of the artificial blood vessel 1 is connected to the first connecting end 21 of the support sleeve 2, and the second anastomotic end 12 of the artificial blood vessel 1 is connected to the second connecting end 22 of the support sleeve 2. The support sleeve 2 can effectively provide support to the artificial blood vessel 1, reduce the swinging and deformation of the artificial blood vessel 1, and improve the stability of the artificial blood vessel 1 after implantation.

[0061] Furthermore, the artificial blood vessel 1 stabilization device provided in the present application, by providing a straightening structure 3 for use in conjunction with the support sleeve 2, can further maintain the distance between the support sleeve 2 and the atrial wall, thereby reducing the situation where the human blood vessels and the support sleeve 2 compress the atrial wall, causing blood reflux obstruction or even deformation of the atrial wall.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0063] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. An artificial blood vessel stabilization device, characterized in that: The device is used for connecting with an artificial blood vessel (1), wherein the artificial blood vessel (1) has a first anastomotic end (11) and a second anastomotic end (12) opposite to each other along its axial direction. The artificial blood vessel (1) stabilizing device comprises: The support sleeve (2) is through-shaped along its axial direction, and has a first connecting end (21) and a second connecting end (22) opposite to each other along its axial direction; the support sleeve (2) is sleeved on the outside of the artificial blood vessel (1), the first anastomotic end (11) is connected to the first connecting end (21), and the second anastomotic end (12) is connected to the second connecting end (22).

2. The artificial blood vessel stabilization device according to claim 1, characterized in that: The support sleeve (2) is a mesh sleeve, and a plurality of evenly distributed through holes penetrating along the radial direction of the support sleeve (2) are formed on the wall of the support sleeve (2).

3. The artificial blood vessel stabilization device according to claim 1, characterized in that: The first connecting end (21) is connected to the first anastomotic end (11) via a first connecting member (23); the first connecting member (23) is annular, and the radial dimension of the first connecting member (23) can change with the expansion of the artificial blood vessel (1); The second connecting end (22) is connected to the second anastomotic end (12) via a second connecting member (24), and the second connecting member (24) is an annular structure with a fixed radial dimension.

4. The artificial blood vessel stabilization device according to claim 3, characterized in that: The first connecting member (23) includes a plurality of arc-shaped elements (231), wherein the arc-shaped elements (231) have a first end (2311) and a second end (2312) along their circumference, the first end (2311) having a plug hole (23111), and the second end (2312) having a plug portion (23121), the plug portion (23121) of each arc-shaped element (231) being inserted into the plug hole (23111) of one arc-shaped element (231), and the plurality of arc-shaped elements (231) being connected in sequence to form a ring structure; During the expansion process, the insertion depth of the plug-in portion (23121) in the corresponding plug-in hole (23111) gradually decreases.

5. The artificial blood vessel stabilization device according to claim 3, characterized in that: The first connecting member (23) comprises a plurality of arc-shaped elements (231) and a plurality of corrugated elements (232), wherein a corrugated element (232) is fixedly connected between every two adjacent arc-shaped elements (231), and the arc-shaped elements (231) and the corrugated elements (232) are alternately arranged and connected to form an annular structure, and along the circumference of the annular structure, the corrugated element (232) has a plurality of folds; During the expansion process, the folds gradually unfold.

6. The artificial blood vessel stabilization device according to claim 4 or 5, characterized in that: The surface of the first connecting member (23) is covered with an elastic protective sleeve (233).

7. The artificial blood vessel stabilization device according to claim 1, characterized in that: The artificial blood vessel (1) stabilization device further comprises a righting structure (3), wherein the righting structure (3) is connected to the second connection end (22) of the support sleeve (2); Along the axial direction of the support sleeve (2), the straightening structure (3) and the support sleeve (2) are coaxially arranged; Along the radial direction of the support sleeve (2), the radial dimension of the straightening structure (3) is larger than the radial dimension of the support sleeve (2), and the straightening structure (3) can expand or contract along the radial direction of the support sleeve (2).

8. The artificial blood vessel stabilization device according to claim 7, characterized in that: The righting structure (3) comprises: a connecting ring (31) detachably connected to the second connecting end (22); The straightening member (32) is formed by weaving a plurality of warp threads (321) distributed along the circumference of the support sleeve (2) and a plurality of weft threads (322) distributed along the axial direction of the support sleeve (2), wherein the first end (2311) of each warp thread (321) is fixedly connected to the connecting ring (31), and the second end (2312) of each warp thread (321) is fixedly connected; By adjusting the distance between the second end (2312) of each of the warps (321) and the connecting ring (31), the radial dimension of the straightening member (32) can be adjusted.

9. The artificial blood vessel stabilization device according to claim 8, characterized in that: The straightening member (32) is made of plastic material; The straightening member (32) has an expanded state and a contracted state. In the contracted state, the warps (321) contract and approach each other, and the distance between the second end (2312) of each warp (321) and the connecting ring (31) is the largest. The straightening member (32) has a columnar structure. In the expanded state, compared to the contracted state, the distance between the second end (2312) of each warp thread (321) and the connecting ring (31) is reduced, each warp thread (321) is plastically deformed and moves away from each other, and the plastically deformed diameter of each weft thread (322) is increased.

10. The artificial blood vessel stabilization device according to claim 8, characterized in that: The warp (321) is an arc-shaped elastic member, and the weft (322) is an annular flexible member; The straightening structure (3) further comprises a flexible limiting ring; The straightening member (32) has an expanded state and a contracted state. In the contracted state, each of the warp threads (321) is elastically deformed and contracts toward each other, so that the straightening member (32) has a columnar structure. The flexible limiting ring is sleeved on the outside of each of the warp threads (321). In the expanded state, the flexible limiting ring is separated from the straightening member (32), and the meridians (321) are expanded away from each other to form an ellipsoidal or spherical structure.

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