BEADED COMPONENT, MANUFACTURING METHOD AND APPLICATION THEREOF

1 . A beaded component, comprising an expandable body and at least two shaping assemblies, wherein each shaping assembly of the at least two shaping assemblies comprises a first part and a second part; wherein

the first part has a columnar inner cavity, and a partial section of the expandable body is bundled within the columnar inner cavity to form a shrinkage section of the beaded component; or the first part has a columnar outer surface, and an inner surface of the partial section of the expandable body is fixedly connected to the columnar outer surface to form the shrinkage section of the beaded component;

the second part is a tubular part, and the shrinkage section is sheathed in the second part; and

an expansion section of the beaded component is formed between two adjacent shrinkage sections.

2 . The beaded component according to claim 1 , wherein the end parts of the second part are provided with chamfering structures;

preferably, the first part has the columnar inner cavity, and the first part has a shape selected from a cylinder, a prism, a sphere or a truncated cone;

preferably, the first part has the columnar outer surface; and

preferably, the columnar inner cavity is cylindrical, or the columnar outer surface is cylindrical.

3 . The beaded component according to claim 1 , wherein the partial section of the expandable body and the columnar inner cavity are connected in a first manner selected from welding, bonding, hot melt or tight fit;

preferably, the inner surface of the partial section of the expandable body and the columnar outer surface are connected in a second manner selected from welding, bonding or hot melt; and

preferably, the second part and the shrinkage section are connected in the first manner selected from welding, bonding, hot melt or tight fit.

4 . The beaded component according to claim 1 , wherein the expandable body is a meshed tube, a solid-wall tube, or an expandable balloon;

preferably, the second part employs a metallic material or a polymeric material;

preferably, the second part is a heat shrink tube; and

preferably, the polymeric material of the second part is selected from polyolefin material, fluorinated ethylene propylene copolymer, neoprene or fluororubber.

5 . The beaded component according to claim 1 , wherein a distance L between two adjacent shaping assemblies satisfies equation (1):

L>D   (1)

wherein D is an outer diameter of the second part.

6 . The beaded component according to claim 1 , wherein the expandable body comprises a first expandable body and a second expandable body, wherein the first expandable body is sheathed in the second expandable body, and a partial section of the second expandable body is bundled within the columnar inner cavity.

7 . A manufacturing method of the beaded component according to claim 1 , comprising:

shrinking the expandable body;

sheathing the expandable body in at least two first parts, or placing the at least two first parts inside the expandable body;

fixedly connecting columnar inner cavities or columnar outer surfaces of the at least two first parts to the expandable body;

sheathing junctions of the at least two first parts and the expandable body in at least two second parts; and

fixedly connecting the at least two second parts to the at least two first parts or the expandable body to obtain the beaded component.

8 . The manufacturing method according to claim 7 , wherein the second part is a heat shrink tube; and the step of fixedly connecting the at least two second parts to the at least two first parts or the expandable body comprises:

heating the at least two second parts to allow the at least two second parts to be connected to the at least two first parts or the expandable body in a hot melt manner.

9 . A stent delivery system, comprising a delivery catheter, a delivery guidewire, and the beaded component according to claim 1 ; wherein

a distal end of the delivery guidewire is fixedly connected to a proximal end of the beaded component; and

the beaded component is positioned within the delivery catheter and is in a compressed state.

10 . The stent delivery system according to claim 9 , wherein the stent delivery system further comprises a stent, wherein the stent is positioned between the delivery catheter and the beaded component and is in a compressed state;

preferably, the stent delivery system further comprises a delivery clip;

the delivery clip comprises a base and at least two clip wings; wherein the at least two clip wings are rotationally connected to the base, respectively; the at least two clip wings, when in a first position state, jointly form a constricting part having a prismatic shape, and the constricting part has an interior space for a constriction of at least a part of the stent; the at least two clip wings, when rotating from the first position state to a second position state, are separated from each other such that the constricting part expands; and

the proximal end of the beaded component is fixedly sheathed in the base of the delivery clip; and the at least two clip wings of the delivery clip are in the first position state and constrict at least the part of the stent therein.

11 . The beaded component according to claim 2 , wherein the partial section of the expandable body and the columnar inner cavity are connected in a first manner selected from welding, bonding, hot melt or tight fit;

preferably, the inner surface of the partial section of the expandable body and the columnar outer surface are connected in a second manner selected from welding, bonding or hot melt; and

preferably, the second part and the shrinkage section are connected in the first manner selected from welding, bonding, hot melt or tight fit.

12 . The beaded component according to claim 2 , wherein the expandable body is a meshed tube, a solid-wall tube, or an expandable balloon;

preferably, the second part employs a metallic material or a polymeric material;

preferably, the second part is a heat shrink tube; and

preferably, the polymeric material of the second part is selected from polyolefin material, fluorinated ethylene propylene copolymer, neoprene or fluororubber.

13 . The beaded component according to claim 3 , wherein the expandable body is a meshed tube, a solid-wall tube, or an expandable balloon;

preferably, the second part employs a metallic material or a polymeric material;

preferably, the second part is a heat shrink tube; and

preferably, the polymeric material of the second part is selected from polyolefin material, fluorinated ethylene propylene copolymer, neoprene or fluororubber.

14 . The beaded component according to claim 2 , wherein a distance L between two adjacent shaping assemblies satisfies equation (1):

L>D   (1)

wherein D is an outer diameter of the second part.

15 . The beaded component according to claim 3 , wherein a distance L between two adjacent shaping assemblies satisfies equation (1):

L>D   (1)

wherein D is an outer diameter of the second part.

16 . The beaded component according to claim 4 , wherein a distance L between two adjacent shaping assemblies satisfies equation (1):

L>D   (1)

wherein D is an outer diameter of the second part.

17 . The beaded component according to claim 2 , wherein the expandable body comprises a first expandable body and a second expandable body, wherein the first expandable body is sheathed in the second expandable body, and a partial section of the second expandable body is bundled within the columnar inner cavity.

18 . The beaded component according to claim 3 , wherein the expandable body comprises a first expandable body and a second expandable body, wherein the first expandable body is sheathed in the second expandable body, and a partial section of the second expandable body is bundled within the columnar inner cavity.

19 . The beaded component according to claim 4 , wherein the expandable body comprises a first expandable body and a second expandable body, wherein the first expandable body is sheathed in the second expandable body, and a partial section of the second expandable body is bundled within the columnar inner cavity.

20 . The beaded component according to claim 5 , wherein the expandable body comprises a first expandable body and a second expandable body, wherein the first expandable body is sheathed in the second expandable body, and a partial section of the second expandable body is bundled within the columnar inner cavity.