CN215228887U - Blood vessel support - Google Patents

Abstract

The utility model provides a vascular stent, it includes a plurality of brace rod units that are circuitous curved shape and extend, and is a plurality of the brace rod unit interval is laid, vascular stent still includes bearing structure, bearing structure sets up in two adjacent between the brace rod unit, works as during the vascular stent expansion, bearing structure receives adjacent two the extrusion of brace rod unit, bearing structure is to adjacent the brace rod unit provides reverse holding power. The intravascular stent can reduce the axial shortening rate of the intravascular stent while expanding on the premise of ensuring good supporting performance and larger post-expansion performance.

Description

Blood vessel support

Technical Field

The utility model relates to the field of medical equipment, especially, relate to and intervene the medical equipment field, specifically be a vascular support.

Background

The vascular diseases mainly refer to atherosclerosis, inflammatory vascular diseases, functional vascular diseases, vascular true tumor diseases and the like. With atherosclerosis being the most common. For vascular diseases, the vascular stent is a common medical instrument for minimally invasive interventional surgery with the widest application range at present. The interventional operation has the advantages of small wound, light pain, quick recovery and the like of minimally invasive therapy. Under the support of the modern medical radiography technology, the blood vessel stent is arranged in a blood vessel at a lesion narrow section by utilizing the principle of balloon dilatation molding through guide wire guidance, so that the aims of supporting the blood vessel at a narrow occlusion section, reducing the retraction of the blood vessel, keeping the blood flow of a blood cavity smooth and reshaping can be achieved.

In the actual use process, in order to ensure that the expanded diameter of the stent can effectively control the vascular lesion part, the selection of the vascular stent tends to be a product with larger post-expansion diameter. However, in the prior art, during the expansion process, the stent has a certain degree of axial deformation, that is, the distance between two adjacent supporting rib units 91 is reduced along with the expansion of the stent. Fig. 1 is a schematic diagram showing a prior art vascular stent in a comparative structure before and after expansion. As shown in fig. 1, the left side a is a schematic structural diagram of the space between two adjacent supporting rib units 91 when the stent is not expanded; and the right side B is a structural schematic diagram of the space between two adjacent supporting rib units 91 after the blood vessel stent is expanded. As can be seen from the comparison between the graph A and the graph B, the larger the expanded diameter, the larger the axial shortening. This can lead to inaccurate or poor adherence of the stent to cover the original area of the lesion and even damage to the vessel, leading to a series of complications. This also significantly compromises the performance of the original vascular stent with the advantage of post-dilatation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vascular stent, under this vascular stent can guarantee good support performance and the great prerequisite of back expansion performance, reduce the axial rate of shortening of vascular stent in the expansion.

The utility model provides a vascular stent, including a plurality of brace rod units that are circuitous curved shape and extend, it is a plurality of the brace rod unit interval is laid, vascular stent still includes bearing structure, bearing structure sets up in two adjacent between the brace rod unit, works as during the vascular stent expansion, bearing structure receives adjacent two the extrusion of brace rod unit, bearing structure is to adjacent the brace rod unit provides reverse holding power.

Furthermore, the roundabout bent support rib units extend in a wave shape, a sawtooth shape or a square wave shape.

Furthermore, each support rib unit includes a plurality of bending parts, in two adjacent support rib units, the bending part includes a first bending part protruding towards the direction away from another support rib unit, and a second bending part protruding towards another support rib unit, the support structure is arranged between the second bending parts on two adjacent support rib units, between the first bending parts on two adjacent support rib units, and/or between the first bending part of one support rib unit and the second bending part of another support rib unit.

Further, when the support structure is disposed between the second bending portions of two adjacent support rib units, a distance between the two second bending portions of the support structure is greater than a distance between the two second bending portions of the support structure.

Furthermore, two adjacent support rib units are mirror-symmetric, and in the two adjacent support rib units, the first bending part and the second bending part on one support rib unit respectively correspond to the positions of the first bending part and the second bending part on the other support rib unit.

Further, when the supporting structure is arranged between the two first bending parts, the supporting structure is arranged between the two corresponding first bending parts, one of the first bending parts on the supporting rib unit, the supporting structure and the other of the first bending parts on the supporting rib unit are perpendicular to the extending direction of the supporting rib unit after being connected, when the supporting structure is arranged between the two second bending parts, the supporting structure is arranged between the two corresponding second bending parts, and one of the second bending parts on the supporting rib unit, the supporting structure and the other of the second bending parts on the supporting rib unit are perpendicular to the extending direction of the supporting rib unit after being connected.

Furthermore, the extending modes of two adjacent support rib units are the same, and in the two adjacent support rib units, the first bent part on one support rib unit corresponds to the second bent part on the other support rib unit.

Furthermore, a plurality of support structures are arranged between two adjacent support rib units and are arranged at intervals along the extension direction of the support rib units.

Furthermore, two adjacent supporting rib units form a supporting rib unit group, the supporting structures are located at different positions between different supporting rib unit groups, and the projection of the supporting structure in the first supporting rib unit group to the position of the adjacent second supporting rib unit group along the extending direction perpendicular to the supporting rib units is located between the two supporting structures in the second supporting rib unit group.

Further, the support structure comprises a zigzag portion extending in a winding curve shape, and two connecting portions respectively connecting the zigzag portion to two adjacent support rib units.

Furthermore, the zigzag part extending in a winding and bending way is in a wave shape, a sawtooth shape, a square wave shape, a plate wave shape or an omega shape.

Further, at least one arc-shaped part is formed at the joint of the bent part and the connecting part, an outer edge is formed on the outer side of the arc-shaped part, and gaps are formed between the outer edge of the arc-shaped part and the supporting rib unit, between the outer edge of the arc-shaped part and the bent part or between the outer edges of two opposite arc-shaped parts in the same supporting structure.

Further, the bent portion extends in a direction perpendicular to the extending direction of the brace unit, or in a direction parallel to the extending direction of the brace unit.

Furthermore, one end of each connecting portion is connected with the corresponding support rib unit, the other end of each connecting portion spans the corresponding bent portion and then is connected with one side, far away from the corresponding support rib unit, of the corresponding bent portion, the two connecting portions connected with the two support rib units are arranged at intervals in the same supporting structure along the extending direction of the corresponding support rib unit, and the bent portions are located between the two connecting portions.

Furthermore, one end of the zigzag portion is connected with the supporting rib unit, the other end of the zigzag portion extends towards the direction of the zigzag portion and is connected with one side of the zigzag portion facing the supporting rib unit, and the connecting portions on two sides of the zigzag portion are located on the same straight line perpendicular to the extending direction of the supporting rib unit.

To sum up, the utility model discloses in, through be provided with bearing structure between two adjacent brace rod units, this bearing structure can support two adjacent brace rod units when receiving the extrusion, and this can make the brace rod unit itself when extending, reduces the distance that is close to between two adjacent brace rod units, also promptly this intravascular stent can guarantee under the prerequisite of good support performance and great back expansion performance, reduces the axial rate of shortening of intravascular stent in the expansion.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic diagram showing a prior art vascular stent in a comparative structure before and after expansion.

Fig. 2 is a schematic view of the overall structure of a blood vessel stent according to a first embodiment of the present invention.

Fig. 3 is a partially expanded structural view of the vascular stent of fig. 2.

Fig. 4 is an enlarged schematic view of the support structure of fig. 3.

Fig. 5 is a schematic view showing a comparative structure of a vascular stent before and after dilatation according to a first embodiment of the present invention.

Fig. 6 is a schematic view of a partially expanded structure of a stent-graft according to a second embodiment of the present invention.

Fig. 7 is an enlarged schematic view of the support structure of fig. 6.

Fig. 8 is a schematic view of a partially expanded structure of a stent according to a third embodiment of the present invention.

Fig. 9 is an enlarged structural view of the support structure of fig. 8.

Fig. 10 is a schematic view showing a partially expanded structure of a stent graft according to a fourth embodiment of the present invention.

Fig. 11 is a schematic view of a partially expanded structure of a stent according to a fifth embodiment of the present invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments.

The utility model provides a vascular stent, under this vascular stent can guarantee good support performance and the great prerequisite of back expansion performance, reduce the axial rate of shortening of vascular stent in the expansion.

Fig. 2 is a schematic view of an overall structure of a blood vessel stent according to a first embodiment of the present invention, fig. 3 is a schematic view of a partially expanded structure of the blood vessel stent in fig. 2, and fig. 4 is an enlarged schematic view of a supporting structure in fig. 3. The utility model provides a vascular support includes that a plurality of circuitous curved forms that are extend brace rod unit 10, and each brace rod unit 10 can be followed vascular support's circumferencial direction circuitous crooked extension. In fig. 2, the extending direction of the supporting rib unit 10 and the extending direction of the axis of the stent are perpendicular to each other, but the relationship between the two is not limited. The plurality of supporting rib units 10 are arranged at intervals, the blood vessel support further comprises a supporting structure 20, the supporting structure 20 is arranged between two adjacent supporting rib units 10, when the blood vessel support is expanded, the supporting structure 20 is extruded by the adjacent supporting rib units 10, and the supporting structure 20 provides supporting force for the two adjacent supporting rib units 10.

In this embodiment, when the blood vessel stent is expanded, that is, when the blood vessel stent shown in fig. 2 is expanded in the radial direction, the distance between two adjacent supporting rib units 10 is gradually decreased, because the supporting structure 20 is disposed between two adjacent supporting rib units 10, the supporting structure 20 supports the two adjacent supporting rib units 10 when being squeezed, so that the supporting rib units 10 resist the tendency of the distance between the two supporting rib units 10 being shortened when extending, the distance between two adjacent supporting rib units 10 being close to each other is decreased, and the axial shortening rate of the blood vessel stent is decreased while expanding on the premise that the good supporting performance and the greater post-expansion performance of the blood vessel stent can be ensured.

Further, the support bar unit 10 extending in a zigzag manner may extend in a wave shape, a zigzag shape, a square wave shape, or the like. Fig. 3 shows a preferred wave-shaped scheme, which can improve the distribution of stress of the supporting rib unit 10 under compression or tension, improve the safety performance of the vascular stent, and increase the service life of the vascular stent. Each of the two adjacent support rib units 10 includes a first bent portion 11 protruding in a direction away from the other support rib unit 10, and a second bent portion 12 protruding in a direction toward the other support rib unit 10. It should be noted that the arrangement of the first bent portion 11 and the second bent portion 12 is defined with respect to two adjacent support bar units 10, and as shown in fig. 3, taking the support bar unit 10 in a wire frame as an example, the first bent portion 11 with respect to the support bar unit 10 on the right side in fig. 3 is the second bent portion 12 with respect to the support bar unit 10 on the left side in fig. 3.

The support structure 20 is disposed between the second bent portions 12 of two adjacent support rib units 10. It is understood that in other embodiments, the support structure 20 may also be disposed between the first bent portions 11 of two adjacent support rib units 10, and/or between the first bent portion 11 of one support rib unit 10 and the second bent portion 12 of another support rib unit 10. That is, in the present invention, the brace unit 10 may be arranged in any one of the three forms, or in a combination of at least two forms.

When the support structure 20 is disposed between the second bent portions 12 of two adjacent support rib units 10, the distance between the two second bent portions 12 where the support structure 20 is disposed is greater than the distance between the two second bent portions 12 where the support structure 20 is not disposed, so that the support structure 20 has a larger installation space. It is understood that in other embodiments, the distance between the two second bent portions 12 provided with the supporting structure 20 may also be equal to the distance between the two second bent portions 12 not provided with the supporting structure 20.

More specifically, two adjacent support rib units 10 are mirror-symmetrical, that is, the positions of the first bent portions 11 on two adjacent support rib units 10 correspond to each other, and likewise, the positions of the second bent portions 12 correspond to each other. As shown in fig. 3, when the supporting structure 20 is disposed between the two second bent portions 12, the supporting structure 20 is disposed between the two corresponding second bent portions 12, and at this time, the arrangement direction after the second bent portion 12 on one supporting rib unit 10, the supporting structure 20 and the second bent portion 12 on the other supporting rib unit 10 are connected is perpendicular to the extending direction of the supporting rib unit 10. Through the arrangement mode, when the blood vessel stent is expanded, the supporting structure 20 can better provide supporting force for the two supporting rib units 10. Similarly, when the supporting structure 20 is disposed between the two first bending portions 11, the supporting structure 20 is disposed between the two corresponding first bending portions 11, and at this time, the arrangement direction of the first bending portion 11 on one supporting rib unit 10, the supporting structure 20 and the first bending portion 11 on the other supporting rib unit 10 after connection is perpendicular to the extending direction of the supporting rib unit 10.

Further, with reference to fig. 2 to fig. 4, in this embodiment, a plurality of support structures 20 may be disposed between two adjacent support rib units 10, and the support structures 20 are arranged at intervals along the extending direction of the support rib units 10.

In this embodiment, two adjacent support rib units 10 may form a support rib unit group, and between different support rib unit groups, the support structures 20 are located at different positions, that is, the support structure 20 in the first support rib unit group is located between two support structures 20 in the second support rib unit group along the projection perpendicular to the extending direction of the support rib unit 10 to the position of the adjacent second support rib unit group.

The arrangement of the support structure 20 described above can make the force applied to the support bar unit 10 by the support structure 20 more uniform.

With reference to fig. 4, the supporting structure 20 includes a curved portion 21 extending in a winding curve shape, and two connecting portions 22 respectively connecting the curved portion 21 to two adjacent supporting rib units 10, that is, the curved portion 21 is connected to the supporting rib units 10 on two sides through the two connecting portions 22. In the present embodiment, the meandering portion 21 has an S-shape. It will be appreciated that in other embodiments, the meander 21 may be undulating, saw tooth shaped, square wave shaped, half wave shaped, omega shaped, etc. When the stent is expanded, the bent portions 21 can provide a supporting force to the supporting rib units 20 by their own deformation.

More specifically, in the present embodiment, at least one arc-shaped portion (see a in fig. 4) is formed at the connection portion of the bent portion 21 and the connection portion 22, an outer side of the arc-shaped portion, that is, a side away from the center of the arc-shaped portion, is formed with an outer edge, and a gap is formed between the outer edge and the supporting bar unit 10 in a direction perpendicular to the direction in which the supporting bar unit 10 extends (see B in fig. 4). When the stent is expanded, the gap is shrunk, and the outer side edge of the second bending part 12 abuts against the outer edge of the arc part to generate a supporting force for the supporting rib unit 10.

Further, in the present embodiment, the bent portion 21 extends in a direction perpendicular to the extending direction of the support bead unit 10. The connecting portion 22 has one end connected to one of the brace units 10 and the other end connected to the side of the bent portion 21 remote from the brace unit 10. That is, when connecting, one end of the connecting portion 22 is connected to the supporting bar unit 10, and the other end extends in the direction of the other supporting bar unit 10, and after crossing over the bent portion 21, is connected to the other side of the bent portion 21, and the bent portion 21 is located substantially between both ends of the connecting portion 22. In the same support structure 20, two connecting portions 22 respectively connected to two support rib units 10 are arranged at intervals along the extending direction of the support rib units 10, and in this direction, the bent portion 21 is located between the two connecting portions 22.

As a modification of this embodiment, the extending direction of the bent portion 21 and the extending direction of the support rib unit 10 may be parallel to each other. The positional relationship between the bent portion 21 and the connecting portion 22 is unchanged, and similarly, when connecting, one end of the connecting portion 22 is connected to the support bar unit 10, and the other end extends in the direction of the other support bar unit 10, crosses over the bent portion 21, and then is connected to the other side of the bent portion 21, and the bent portion 21 is located substantially between both ends of the connecting portion 22. In the same support structure 20, two connecting portions 22 respectively connected to two adjacent support rib units 10 are arranged at intervals along the extending direction of the support rib units 10, and in this direction, the bent portion 21 is located between the two connecting portions 22.

Fig. 5 is a schematic view showing a comparative structure of a vascular stent before and after dilatation according to a first embodiment of the present invention. The left side A of fig. 5 shows the structural diagram of the blood vessel stent when the blood vessel stent is not expanded, and the right side B of fig. 5 shows the structural diagram of the blood vessel stent after the blood vessel stent is expanded. As can be seen from the comparison between the diagrams a and B, with the above arrangement, when the blood vessel stent is expanded, the pressure transmitted by the two support rib units 10 to the support structure 20 is transmitted to the bent portion 21 through the connecting portions 22 connected to the two support rib units, respectively, one end of each connecting portion 22 is connected to one support rib unit 10, the other end is connected to the side of the bent portion 21 away from the support rib unit 10, the bent portion 21 is stretched, under the pressure transmitted from the two support rib units 10 to the support structure 20, stretching occurs, so that the bent portions 21 are extended, and at the same time, because the supporting rib unit 10 shrinks due to the expansion force, the distance between two adjacent supporting rib units 10 is shortened, the outer side edge of the second bending part 12 on the supporting rib unit 10 is also abutted against the outer side edge of the arc part, so that the support structure 20 provides a supporting force to the adjacent two tendon units 10 better.

Fig. 6 is a partial structural schematic view of a vascular stent according to a second embodiment of the present invention, and fig. 7 is an enlarged structural schematic view of a supporting structure in fig. 6. The vascular stent provided in the second embodiment of the present invention is substantially the same as the vascular stent provided in the first embodiment, except that, in this embodiment, the gap is formed between the outer edge of the arc-shaped portion and the curved portion 21 (see C in fig. 7).

In the present embodiment, the case where the bent portion 21 extends in the extending direction of the support bead unit 10 is shown. At this time, the bent portion 21 is deformed by itself, and the outer edge of the arc portion abuts against the bent portion 21 to provide a supporting force to the supporting rib unit 10.

In order to better provide the supporting force to the outside by the deformation of the bent portion 21, in the present embodiment, the connecting portions 22 at both sides of the bent portion 21 are located on the same straight line perpendicular to the extending direction of the supporting rib unit 10.

In the present embodiment, one end of the connecting portion 22 is connected to the supporting bar unit 10, and the other end extends in the direction of the bent portion 21 and is connected to the side of the bent portion 21 facing the supporting bar unit 10.

Fig. 8 is a partial structural view of a vascular stent according to a third embodiment of the present invention, and fig. 9 is an enlarged structural view of the supporting structure of fig. 8. As shown in fig. 8 to 9, the vascular stent provided by the third embodiment of the present invention is substantially the same as the first embodiment, and shows a schematic structural view when the bent portion 21 is in an Ω shape. The difference is that the gap is formed between the outer edges of two opposite arc-shaped parts in the same support structure 20 (see D in fig. 9).

In connection with the embodiments, that is, the above-mentioned gap may be formed between the outer edge of the arc portion and the second bent portion 12, between the outer edge of the arc portion and the bent portion 21, or between the outer edges of two opposite arc portions within the same support structure 20. When the blood vessel stent expands, the above gap is reduced, the bent portion 21 can be deformed to reduce the gap by itself to provide a blocking force, and when the gap becomes zero, the outer edge of the arc portion provides a supporting force for the supporting rib unit 10 by abutting against the second bent portion 12, the bent portion 21 or another arc portion.

Fig. 10 is a schematic view showing a partially expanded structure of a stent graft according to a fourth embodiment of the present invention. As shown in fig. 10, the fourth embodiment of the present invention is substantially the same as the above embodiments, except that in this embodiment, a supporting rib unit 10 is disposed on two first bending portions 11.

It is understood that, in the arrangement mode that the two connecting portions 22 respectively connected to the two support rib units 10 are arranged at intervals along the extending direction of the support rib units 10 in the same support structure 20 as in the first embodiment, the support rib units 10 may also be arranged between the first bent portion 11 and the second bent portion 12.

Fig. 11 is a schematic view of a partially expanded structure of a stent according to a fifth embodiment of the present invention. As shown in fig. 11, the vascular stent provided in the fifth embodiment of the present invention may be substantially the same as the above embodiments, except that in this embodiment, the extending manner of the two adjacent supporting rib units 10 is the same, that is, in the two adjacent supporting rib units 10, the first bent portion 11 of one supporting rib unit 10 corresponds to the position of the second bent portion 12 of the other supporting rib unit. Fig. 11 shows a case where the supporting structure 20 is disposed between the corresponding first bent portion 11 and the second bent portion 12. It is understood that in this way of arranging the supporting bar units 10, the supporting structure 20 may also be arranged between the first bent portions 11 of two adjacent supporting bar units 10, and/or between the first bent portion 11 of one supporting bar unit 10 and the second bent portion 12 of the other supporting bar unit 10. That is, in the present embodiment, the supporting rib unit 10 may be arranged in any one of the three forms described above, or in a combination of at least two forms.

In conclusion, the utility model discloses in, through be provided with bearing structure 20 between two adjacent brace rod units 10, this bearing structure 20 can support two adjacent brace rod units 10 when receiving the extrusion, and this can make brace rod unit 10 self when extending, reduces the distance that is close to between two adjacent brace rod units 10, also promptly this blood vessel support can guarantee under the prerequisite of good support performance and great back expansion performance, reduces the axial rate of shortening of blood vessel support in the expansion.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.

Claims (15)

1. A vascular stent, characterized by: including a plurality of brace rod units that are circuitous winding curve form and extend, it is a plurality of brace rod unit interval is laid, vascular support still includes bearing structure, bearing structure sets up in two adjacent between the brace rod unit, works as during the vascular support expansion, bearing structure receives adjacent two the extrusion of brace rod unit, bearing structure is to adjacent the brace rod unit provides reverse holding power.

2. The vascular stent of claim 1, wherein: the roundabout bent support rib units extend in a wave shape, a sawtooth shape or a square wave shape.

3. The vascular stent of claim 1, wherein: each support rib unit includes a plurality of kinks, in adjacent two in the support rib unit, the kink includes to keeping away from another the outstanding first kink of support rib unit place direction, and towards another the outstanding second kink of support rib unit place direction, bearing structure sets up in adjacent two on the support rib unit between the second kink, adjacent two on the support rib unit between the first kink, and/or one between the first kink of support rib unit and the second kink of another support rib unit.

4. The vascular stent of claim 3, wherein: when the supporting structure is arranged between the second bending parts of the two adjacent supporting rib units, the distance between the two second bending parts of the supporting structure is larger than the distance between the two second bending parts of the supporting structure.

5. The vascular stent of claim 3, wherein: the two adjacent support rib units are mirror-symmetric, and in the two adjacent support rib units, the first bent part and the second bent part on one of the support rib units correspond to the first bent part and the second bent part on the other support rib unit respectively.

6. The vascular stent of claim 5, wherein: when the supporting structure is arranged between the two first bending parts, the supporting structure is arranged between the two corresponding first bending parts, one of the first bending parts on the supporting rib unit, the supporting structure and the other of the first bending parts on the supporting rib unit are perpendicular to the extending direction of the supporting rib unit after being connected, when the supporting structure is arranged between the two second bending parts, the supporting structure is arranged between the two corresponding second bending parts, one of the second bending parts on the supporting rib unit, the supporting structure and the other of the second bending parts on the supporting rib unit are perpendicular to the extending direction of the supporting rib unit after being connected.

7. The vascular stent of claim 3, wherein: the extending modes of two adjacent support rib units are the same, and in the two adjacent support rib units, the first bent part on one support rib unit corresponds to the second bent part on the other support rib unit.

8. The vascular stent of claim 1, wherein: and a plurality of support structures are arranged between two adjacent support rib units and are arranged at intervals along the extension direction of the support rib units.

9. The vascular stent of claim 8, wherein: two adjacent the brace rod unit constitutes a brace rod unit group, and is different between the brace rod unit group, bearing structure is located different positions, and is the first bearing structure in the brace rod unit group is along the perpendicular to the extending direction of brace rod unit is to adjacent second the projection of the position at brace rod unit group place is located the second two in the brace rod unit group between the bearing structure.

10. The vascular stent of claim 3, wherein: the support structure comprises a zigzag part extending in a circuitous and curved shape and two connecting parts respectively connecting the zigzag part to two adjacent support rib units.

11. The vascular stent of claim 10, wherein: the zigzag part extending in a winding and bending way is in a wave shape, a sawtooth shape, a square wave shape, a plate wave shape or an omega shape.

12. The vascular stent of claim 10, wherein: at least one arc-shaped part is formed at the joint of the bent part and the connecting part, an outer edge is formed on the outer side of the arc-shaped part, and gaps are formed between the outer edge of the arc-shaped part and the supporting rib unit, between the outer edge of the arc-shaped part and the bent part or between the outer edges of two opposite arc-shaped parts in the same supporting structure.

13. The vascular stent of claim 10, wherein: the bent portion extends in a direction perpendicular to the extending direction of the brace unit or in a direction parallel to the extending direction of the brace unit.

14. The vascular stent of claim 10, wherein: one end of each connecting part is connected with the corresponding support rib unit, the other end of each connecting part spans the corresponding bent part and then is connected with one side, far away from the corresponding support rib unit, of the corresponding bent part, the two connecting parts, connected with the two support rib units, are arranged in the same support structure along the extending direction of the support rib units at intervals, and the bent parts are located between the two connecting parts.

15. The vascular stent of claim 10, wherein: one end of the zigzag portion is connected with the supporting rib unit, the other end of the zigzag portion extends towards the direction of the zigzag portion and is connected with one side of the supporting rib unit, which faces towards the zigzag portion, and the connecting portions on two sides of the zigzag portion are positioned on the same straight line which is perpendicular to the extending direction of the supporting rib unit.

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