Urethral bladder stent and method of weaving the same

Abstract

The application provides a urethral bladder stent and a weaving method thereof, and relates to the technical field of urological medical devices. The weaving method comprises the following steps: providing a weaving mold, the weaving mold comprising a first section in a cylindrical shape and a second section in a truncated cone shape; the outer surface of the second section is provided with a plurality of positioning assemblies; each positioning assembly comprises one first positioning rod arranged in a first row and at least one second positioning rod arranged in a second row; a plurality of weaving filaments of a first group of weaving filaments are arranged around the first positioning rods in the positioning assemblies respectively; a plurality of weaving filaments of a second group of weaving filaments are arranged around the second positioning rods in the positioning assemblies respectively, and the weaving filaments of the first group of weaving filaments pass from the inner sides of the two second positioning rods on the outermost side of each positioning assembly; the two ends of each weaving filament are respectively crossed and woven along the outer surface of the weaving mold in a spiral path in different directions, and edge closing treatment is performed to obtain the urethral bladder stent. The urethral bladder stent with a multi-lobe structure can be woven.

Description

Technical Field

[0001] This application relates to the field of urological medical device technology, and more specifically, to a urethral bladder stent and its weaving method. Background Technology

[0002] Prostate diseases mainly include prostatitis, benign prostatic hyperplasia (BPH), and prostate cancer. Some severe prostate diseases require prostate removal. When removing the prostate around the urethra, part of the urethra needs to be removed along with it. After prostate removal, the base of the bladder neck needs to be sutured to the urethra. However, because part of the urethra has been removed, its overall length is shortened. Suturing the base of the bladder neck to the remaining part of the urethra can stretch both the bladder and urethra, resulting in a tighter connection, which may lead to subsequent urinary incontinence.

[0003] Based on this, this application provides a urethral bladder stent and its weaving method. The woven urethral bladder stent can be used to limit excessive stretching of the urethra and bladder, thereby reducing the probability of urinary incontinence. Summary of the Invention

[0004] This application provides a urethral bladder stent and its weaving method, which can weave a urethral bladder stent with a multi-lobed structure. The urethral bladder stent can provide support for the urethra and bladder and limit excessive stretching of the urethra and bladder to reduce the occurrence of urinary incontinence; and the urethral bladder stent can fit more closely to the bladder and the connection is more stable.

[0005] This application is implemented as follows:

[0006] In a first aspect, this application provides a method for weaving a urethral bladder stent, comprising the following steps:

[0007] A weaving mold is provided, comprising a cylindrical first section and a frustum-shaped second section. The second section includes opposing first and second ends, with the outer diameter of the first end being larger than that of the second end, and the second end being connected to the first section. The outer surface of the second section is provided with multiple rows of positioning elements, each row of positioning elements including multiple positioning rods spaced apart circumferentially along the second section.

[0008] Multiple rows of positioning elements form multiple sets of positioning components, and the multiple sets of positioning components are arranged circumferentially along the outer surface of the second segment; each set of positioning components includes a first positioning rod arranged in the first row and at least one second positioning rod arranged in the second row, and when the positioning component is provided with multiple second positioning rods, the two outermost second positioning rods of the multiple second positioning rods are respectively located on the outside of the opposite direction of the first positioning rod.

[0009] Multiple sets of braided yarns are provided, including a first set of braided yarns and a second set of braided yarns; multiple braided yarns of the first set of braided yarns are respectively wound around a first positioning rod in each positioning assembly; multiple braided yarns of the second set of braided yarns are respectively wound around a second positioning rod in each positioning assembly, and the braided yarns of the first set of braided yarns pass through the inside of the second positioning rod;

[0010] The two ends of each braiding filament are crisscrossed along the outer surface of the braiding mold in a spiral path to form a support with a diamond structure, and then the edges are finished to obtain a urethral bladder support.

[0011] In one possible implementation, the second row of the positioning assembly is provided with a second positioning rod, the first positioning rod and the second positioning rod in each group of positioning assemblies are staggered, and the two ends of the braided yarn of the first group of braided yarns pass through the inside of the second positioning rods of the adjacent two groups of positioning assemblies.

[0012] In one possible implementation, the second row of each group of positioning components is provided with three second positioning rods; the first positioning rod in each group of positioning components is aligned with the second positioning rod in the middle position; and the two ends of the braiding wire of the first group of braiding wire pass between the two outermost second positioning rods and the second positioning rod in the middle position of each group of positioning components.

[0013] In one possible implementation, each group of positioning components further includes two third positioning rods arranged in a third row, the two third positioning rods being located outside the two second positioning rods located on the outer side; the multiple groups of braided wires also include a third group of braided wires, with multiple braided wires of the third group of braided wires respectively wound around the third positioning rods in each group of positioning components, such that the two ends of the braided wires of the first group of braided wires and the second group of braided wires respectively pass through the inner side of the two third positioning rods of each group of positioning components.

[0014] In one possible implementation, each group of positioning components further includes two fourth positioning rods arranged in a fourth row, the two fourth positioning rods being located outside the two third positioning rods; the multiple groups of braided wires also include a fourth group of braided wires, with multiple braided wires of the fourth group of braided wires respectively wound around the fourth positioning rods in each group of positioning components, such that the two ends of the braided wires of the first group of braided wires, the second group of braided wires, and the third group of braided wires respectively pass through the inside of the two fourth positioning rods of each group of positioning components.

[0015] In one possible implementation, the positioning rod includes a bend for holding the braided yarn.

[0016] In one possible implementation, the positioning rod includes a first positioning segment arranged laterally and a second positioning segment arranged vertically, the bottom end of the second positioning segment being connected to the first positioning segment to form a bend.

[0017] In one possible implementation, multiple sets of positioning components are equally spaced along the circumferential direction of the outer surface of the second segment.

[0018] In one possible implementation, the positioning components are provided in 3 to 6 groups.

[0019] Secondly, this application provides a urethral bladder stent, which is woven using the urethral bladder stent weaving method of the first aspect, wherein one end of the urethral bladder stent forms a multi-lobed structure and a gap is formed between two adjacent lobed structures.

[0020] The embodiments of this application have at least the following beneficial effects:

[0021] The braiding method of the urethral bladder stent disclosed in this application, through a specific braiding mold and the positioning and direction of the braiding threads, enables the weaving of a one-piece, multi-lobed urethral bladder stent. The braiding threads do not knot together, and the overall support of the urethral bladder stent is good, limiting excessive stretching of the urethra and bladder neck, thereby reducing the likelihood of urinary incontinence. The multiple lobe structures are relatively independent, and when the lobe structures are connected to the bladder neck, they can better adapt to the lateral shape of the bladder, resulting in a more snug fit. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the knitting mold according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the positioning rod according to an embodiment of this application;

[0025] Figure 3 This describes the positioning rod arrangement and braided wire winding method of Embodiment 1 of this application;

[0026] Figure 4 The urethral bladder stent is woven using the weaving method described in Embodiment 1 of this application;

[0027] Figure 5 This describes the positioning rod arrangement and braiding wire winding method of Embodiment 2 of this application;

[0028] Figure 6 The urethral bladder stent is woven using the weaving method described in Embodiment 2 of this application;

[0029] Figure 7 This refers to the method of wrapping severely knotted braided yarns in Embodiment 2 of this application;

[0030] Figure 8 This describes the positioning rod arrangement and braided wire winding method of Embodiment 3 of this application;

[0031] Figure 9 The urethral bladder stent is woven using the weaving method described in Embodiment 3 of this application;

[0032] Figure 10 This is a method of winding braided yarn with severe knotting in Embodiment 3 of this application;

[0033] Figure 11 This is another method of winding braided yarns that results in severe knotting in Embodiment 3 of this application;

[0034] Figure 12 This describes the positioning rod arrangement and braided wire winding method of Embodiment 4 of this application;

[0035] Figure 13 The urethral bladder stent is woven using the weaving method described in Embodiment 4 of this application.

[0036] Icons: 10-Weaving mold; 11-First section; 12-Second section; 121-First end; 122-Second end; 123-Mounting hole; 13-Positioning component; 131-First positioning rod; 132-Second positioning rod; 133-Third positioning rod; 134-Fourth positioning rod; 1301-First positioning segment; 1302-Second positioning segment; 1303-Bending part; 141-First group of braiding filaments; 142-Second group of braiding filaments; 143-Third group of braiding filaments; 144-Fourth group of braiding filaments; 20-Urethra bladder stent; 21-Valve structure. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] This application provides a method for weaving a urethral bladder stent 20, which includes the following steps:

[0042] (1) Provide 10 weaving molds (refer to) Figure 1 The braiding mold 10 includes a cylindrical first segment 11 and a frustum-shaped second segment 12. The first segment 11 and the second segment 12 can be an integral structure or fixed by welding or other methods. The second segment 12 includes a first end 121 and a second end 122, with the outer diameter of the first end 121 being larger than the outer diameter of the second end 122. The second end 122 is connected to the first segment 11. In addition, the outer diameter of the second end 122 is the same as the cylindrical outer diameter of the first segment 11, thereby allowing the support to be braided relatively smoothly from the second segment 12 to the first segment 11 during the braiding process.

[0043] The outer surface of the second segment 12 is provided with multiple rows of positioning members along the height direction, and each row of positioning members includes multiple positioning rods spaced apart circumferentially along the second segment 12. For example, the surfaces of both the first segment 11 and the second segment 12 are provided with multiple rows of mounting holes 123, and the positioning rods can be detachably inserted into and fixed in the mounting holes 123, thereby facilitating assembly.

[0044] Multiple rows of positioning components can form multiple sets of positioning assemblies 13, each set of positioning assemblies 13 being spaced apart circumferentially along the outer surface of the second segment 12. Each set of positioning assemblies 13 corresponds to one flap structure 21 of the woven urethral bladder stent 20. For example, if 3 to 6 sets of positioning assemblies 13 are provided, the woven urethral bladder stent 20 will have 3 to 6 flap structures 21. Furthermore, if multiple sets of positioning assemblies 13 are equally spaced along the circumferential direction of the outer surface of the second segment 12, the woven flap structures 21 will also be equally spaced.

[0045] Each positioning assembly 13 includes a first positioning rod 131 arranged in the first row and at least one second positioning rod 132 arranged in the second row. That is, the second row can have one second positioning rod 132 or multiple second positioning rods 132. When the positioning assembly 13 has multiple second positioning rods 132, the two outermost second positioning rods 132 arranged in the second row are located on the outside of the first positioning rod 131 in the opposite direction, that is, the two outermost second positioning rods 132 are located on the left and right sides of the first positioning rod 131, respectively.

[0046] In one embodiment, the positioning rod includes a bent portion 1303 for holding the braiding yarn, preventing the yarn from falling off the positioning rod during the braiding process. Exemplarily, the positioning rod includes a horizontally arranged first positioning segment 1301 and a vertically arranged second positioning segment 1302 (see reference). Figure 2 The first positioning segment 1301 extends radially along the second segment 12, and the bottom end of the second positioning segment 1302 is connected to the first positioning segment 1301 to form a bend 1303, thereby making it easy to hook the braided yarn.

[0047] (2) Provide multiple sets of braided yarns, including a first set of braided yarns 141 and a second set of braided yarns 142; wrap multiple braided yarns of the first set of braided yarns 141 around the first positioning rod 131 in each positioning component 13; wrap multiple braided yarns of the second set of braided yarns 142 around the second positioning rod 132 in each positioning component 13, and the braided yarns of the first set of braided yarns 141 pass through the inside of the second positioning rod 132.

[0048] (3) The two ends of each braiding filament are woven together in a spiral path along the outer surface of the braiding mold 10 in different directions to form a support including a diamond structure, and then the edges are finished to obtain the urethral bladder support 20. One end of the urethral bladder support 20 forms a multi-lobed structure, and a gap is formed between two adjacent lobe structures 21.

[0049] During the weaving process, a braiding machine can be used. Each braiding thread is connected at both ends to a set of spindles on the machine. The left end of the braiding thread is connected to the left spindle in each set, and the right end is connected to the right spindle. The two spindles in each set move in opposite directions along an "S" path: the left spindle moves clockwise along the "S" path, and the right spindle moves counterclockwise along the "S" path. Simultaneously, the spindle outlets are oriented towards the center of the braiding mold 10, allowing each braiding thread to be woven in a spiral path along the outer surface of the mold 10. The braiding threads are made of polymer material, and the resulting urethral bladder stent 20 can be compressed and restored.

[0050] The braiding method of the urethral bladder stent 20 of this application, through a specific braiding mold 10 and the positioning and direction of the braiding threads, can weave an integral structure of the urethral bladder stent 20 with multiple flap structures 21. The braiding threads do not knot together, and the overall support of the urethral bladder stent 20 is good. One end of the urethral bladder stent 20 with multiple flap structures is used to connect to the bladder neck and support the bladder, and the other end is used to connect to the urethra. The connection between the bladder and urethra is enclosed within the urethral bladder stent 20. The urethral bladder stent 20 provides certain support for the urethra and bladder, and the diamond-shaped structure formed by the braid facilitates the expansion and contraction of the urethral bladder stent 20, limiting excessive stretching of the urethra and bladder neck, thereby reducing the probability of urinary incontinence. Moreover, the multiple flap structures 21 are relatively independent, and when the flap structures 21 are connected to the bladder neck, they can better adapt to the lateral shape of the bladder, making the connection more snug.

[0051] Example 1

[0052] This embodiment provides a method for weaving a urethral bladder stent 20, which includes the following steps:

[0053] (1) A braiding mold 10 is provided, wherein the braiding mold 10 includes a cylindrical first segment 11 and a frustum-shaped second segment 12. The second segment 12 includes an opposing first end 121 and a second end 122, the outer diameter of the first end 121 being larger than the outer diameter of the second end 122, and the second end 122 being connected to the first segment 11. In addition, the outer diameter of the second end 122 is the same as the cylindrical outer diameter of the first segment 11, thereby enabling the support to transition smoothly from the second segment 12 to the first segment 11 during the braiding process.

[0054] Please refer to Figure 3The outer surface of the second segment 12 is provided with two rows of positioning elements along the height direction, forming twelve sets of positioning components 13. Each set of positioning components 13 includes a first positioning rod 131 arranged in the first row and a second positioning rod 132 arranged in the second row. The projection of the first positioning rod 131 in the vertical direction is located between the two second positioning rods 132, and the first positioning rod 131 and the second positioning rod 132 are staggered.

[0055] (2) Two sets of braided yarns are provided, namely a first set of braided yarns 141 and a second set of braided yarns 142. The twelve braided yarns of the first set of braided yarns 141 are respectively wound around the first positioning rod 131, and the twelve braided yarns of the second set of braided yarns 142 are respectively wound around the second positioning rod 132. Furthermore, the two ends of the braided yarns of the first set of braided yarns 141 pass through the inner sides of the two second positioning rods 132 of the two adjacent sets of positioning components 13.

[0056] (3) The two ends of each braiding filament are woven together in a spiral path along the outer surface of the braiding mold 10 in different directions to form a support including a diamond structure, and then the edges are finished to obtain the urethral bladder support 20 (refer to Figure 4 ).

[0057] Example 2

[0058] This embodiment provides a method for weaving a urethral bladder stent 20, which includes the following steps:

[0059] (1) A braiding mold 10 is provided, wherein the braiding mold 10 includes a cylindrical first segment 11 and a frustum-shaped second segment 12. The second segment 12 includes a first end 121 and a second end 122 opposite to each other, the outer diameter of the first end 121 being larger than the outer diameter of the second end 122, and the second end 122 being connected to the first segment 11. In addition, the outer diameter of the second end 122 is the same as the cylindrical outer diameter of the first segment 11, thereby enabling the support to be braided relatively smoothly from the second segment 12 to the first segment 11 during the braiding process.

[0060] Please refer to Figure 5 The outer surface of the second segment 12 is provided with two rows of positioning elements along the height direction, forming six sets of positioning components 13. Each set of positioning components 13 includes a first positioning rod 131 in the first row and three second positioning rods 132 in the second row, with the first positioning rod 131 aligned with the second positioning rod 132 in the middle position.

[0061] (2) Two sets of braided yarns are provided, namely a first set of braided yarns 141 and a second set of braided yarns 142. The six braided yarns of the first set of braided yarns 141 are respectively wound around the first positioning rod 131, and the eighteen braided yarns of the second set of braided yarns 142 are respectively wound around the second positioning rod 132. Furthermore, the two ends of the braided yarns of the first set of braided yarns 141 pass between the two outermost second positioning rods 132 and the middle second positioning rod 132 of each positioning component 13.

[0062] (3) The two ends of each braiding filament are woven together in a spiral path along the outer surface of the braiding mold 10 in different directions to form a support including a diamond structure, and then the edges are finished to obtain the urethral bladder support 20 (refer to Figure 6 ).

[0063] In this application, the inventors discovered during their research that, when the first set of braided yarns 141 are wound around the first set, if the braided yarns pass outside the two outermost second positioning rods 132 of each set of positioning members (refer to...), Figure 7 If the knots are severe during the weaving process, it will be impossible to weave the support frame smoothly.

[0064] Example 3

[0065] This embodiment provides a method for weaving a urethral bladder stent 20, which includes the following steps:

[0066] (1) A braiding mold 10 is provided, wherein the braiding mold 10 includes a cylindrical first segment 11 and a frustum-shaped second segment 12. The second segment 12 includes a first end 121 and a second end 122 opposite to each other, the outer diameter of the first end 121 being larger than the outer diameter of the second end 122, and the second end 122 being connected to the first segment 11. In addition, the outer diameter of the second end 122 is the same as the cylindrical outer diameter of the first segment 11, thereby enabling the support to be braided relatively smoothly from the second segment 12 to the first segment 11 during the braiding process.

[0067] Please refer to Figure 8 The outer surface of the second segment 12 is provided with three rows of positioning elements along the height direction, forming four sets of positioning components 13. Each set of positioning components 13 includes a first positioning rod 131 in the first row, three second positioning rods 132 in the second row, and two third positioning rods 133 in the third row. The first positioning rod 131 is aligned with the second positioning rod 132 in the middle position, and the two third positioning rods 133 are located outside the two second positioning rods 132 on the outer side.

[0068] (2) Three sets of braided yarns are provided, namely, the first set of braided yarns 141, the second set of braided yarns 142, and the third set of braided yarns 143. The four braided yarns of the first set of braided yarns 141 are respectively wound around the first positioning rod 131, the twelve braided yarns of the second set of braided yarns 142 are respectively wound around the second positioning rod 132, and the eight braided yarns of the third set of braided yarns 143 are respectively wound around the third positioning rod 133. Furthermore, the two ends of the braided yarns of the first set of braided yarns 141 pass between the two outermost second positioning rods 132 and the middle second positioning rod 132 of each positioning component 13, and pass through the inner side of the third positioning rod 133. The second braided yarn passes through the inner side of the third positioning rod 133.

[0069] (3) The two ends of each braiding filament are woven together in a spiral path along the outer surface of the braiding mold 10 in different directions to form a support including a diamond structure, and then the edges are finished to obtain the urethral bladder support 20 (refer to Figure 9 ).

[0070] In this application, the inventors discovered during their research that, when the second set of braided yarns 142 are wound, if one end of the braided yarn passes outside the two outermost third positioning rods 133 of each group of positioning members (refer to...), Figure 10 If the knots are severe during the weaving process, the support cannot be woven smoothly. Furthermore, if the third positioning rod 133 in each positioning assembly 13 is aligned with the two outermost second positioning rods 132 (refer to...), Figure 11 The weaving process also resulted in severe knotting.

[0071] Example 4

[0072] This embodiment provides a method for weaving a urethral bladder stent 20, which includes the following steps:

[0073] (1) A braiding mold 10 is provided, wherein the braiding mold 10 includes a cylindrical first segment 11 and a frustum-shaped second segment 12. The second segment 12 includes a first end 121 and a second end 122 opposite to each other, the outer diameter of the first end 121 being larger than the outer diameter of the second end 122, and the second end 122 being connected to the first segment 11. In addition, the outer diameter of the second end 122 is the same as the cylindrical outer diameter of the first segment 11, thereby enabling the support to be braided relatively smoothly from the second segment 12 to the first segment 11 during the braiding process.

[0074] Please refer to Figure 12The outer surface of the second segment 12 is provided with four rows of positioning elements along the height direction, forming three sets of positioning components 13. Each set of positioning components 13 includes a first positioning rod 131 in the first row, three second positioning rods 132 in the second row, two third positioning rods 133 in the third row, and two fourth positioning rods 134 in the fourth row. The first positioning rod 131 is aligned with the second positioning rod 132 in the middle position, the two third positioning rods 133 are located outside the two second positioning rods 132 located on the outer side, and the two fourth positioning rods 134 are located outside the two third positioning rods 133.

[0075] (2) Provide four sets of braiding threads, namely the first set of braiding threads 141, the second set of braiding threads 142, the third set of braiding threads 143 and the fourth set of braiding threads 144. Wrap the three braiding threads of the first set of braiding threads 141 around the first positioning rod 131, wrap the nine braiding threads of the second set of braiding threads 142 around the second positioning rod 132, wrap the six braiding threads of the third set of braiding threads 143 around the third positioning rod 133, and wrap the six braiding threads of the fourth set of braiding threads 144 around the fourth positioning rod 134. Furthermore, the two ends of the braided yarns of the first group of braided yarns 141 pass between the two outermost second positioning rods 132 and the middle second positioning rod 132 of each group of positioning components 13, the inner side of the third positioning rod 133, and the inner side of the fourth positioning rod 134, respectively. The braided yarns of the second group of braided yarns 142 pass through the inner side of the third positioning rod 133 and the inner side of the fourth positioning rod 134, and the braided yarns of the third group of braided yarns 143 pass through the inner side of the fourth positioning rod 134.

[0076] (3) The two ends of each braiding filament are woven together in a spiral path along the outer surface of the braiding mold 10 in different directions to form a support including a diamond structure, and then the edges are finished to obtain the urethral bladder support 20 (refer to Figure 13 ).

[0077] In their research, the inventors of this application discovered that when the third set of braided yarns 143 are wound around, if one end of the braided yarn passes outside the fourth positioning rod 134 in each set of positioning components 13, the weaving process becomes severely knotted.

[0078] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for weaving a urethral bladder stent, characterized in that, Includes the following steps: A weaving mold (10) is provided, the weaving mold (10) includes a first section (11) in the shape of a cylinder and a second section (12) in the shape of a frustum conical. The second section (12) includes a first end (121) and a second end (122) opposite to each other. The outer diameter of the first end (121) is larger than the outer diameter of the second end (122). The second end (122) is connected to the first section (11). The outer surface of the second section (12) is provided with multiple rows of positioning members. Each row of positioning members includes multiple positioning rods that are spaced apart circumferentially along the second section (12). Multiple rows of positioning elements form multiple sets of positioning components (13), and the multiple sets of positioning components (13) are arranged circumferentially along the outer surface of the second segment (12); each set of positioning components (13) includes a first positioning rod (131) arranged in the first row and a second positioning rod (132) arranged in the second row, and the first positioning rod (131) and the second positioning rod (132) in each set of positioning components (13) are staggered; Multiple sets of braided yarns are provided, including a first set of braided yarns (141) and a second set of braided yarns (142); multiple braided yarns of the first set of braided yarns (141) are respectively wound around the first positioning rod (131) in each set of positioning components (13); multiple braided yarns of the second set of braided yarns (142) are respectively wound around the second positioning rod (132) in each set of positioning components (13), and the two ends of the braided yarns of the first set of braided yarns (141) pass through the inside of the second positioning rod (132) of the two adjacent sets of positioning components (13); The two ends of each braided filament are woven in a spiral path along the outer surface of the braiding mold (10) in different directions to form a support including a rhomboid structure, and then the edges are finished to obtain a urethral bladder support (20).

2. A method for weaving a urethral bladder stent, characterized in that, Includes the following steps: A weaving mold (10) is provided, the weaving mold (10) includes a first section (11) in the shape of a cylinder and a second section (12) in the shape of a frustum conical. The second section (12) includes a first end (121) and a second end (122) opposite to each other. The outer diameter of the first end (121) is larger than the outer diameter of the second end (122). The second end (122) is connected to the first section (11). The outer surface of the second section (12) is provided with multiple rows of positioning members. Each row of positioning members includes multiple positioning rods that are spaced apart circumferentially along the second section (12). Multiple rows of positioning elements form multiple sets of positioning components (13), and the multiple sets of positioning components (13) are arranged circumferentially along the outer surface of the second segment (12); each set of positioning components (13) includes a first positioning rod (131) arranged in the first row and three second positioning rods (132) arranged in the second row; the first positioning rod (131) in each set of positioning components (13) is aligned with the second positioning rod (132) in the middle position; Multiple sets of braided yarns are provided, including a first set of braided yarns (141) and a second set of braided yarns (142); multiple braided yarns of the first set of braided yarns (141) are respectively wound around the first positioning rod (131) in each set of positioning components (13); multiple braided yarns of the second set of braided yarns (142) are respectively wound around the second positioning rod (132) in each set of positioning components (13); and the two ends of the braided yarns of the first set of braided yarns (141) pass between the two outermost second positioning rods (132) and the middle second positioning rod (132) of each set of positioning components (13); The two ends of each braided filament are woven in a spiral path along the outer surface of the braiding mold (10) in different directions to form a support including a rhomboid structure, and then the edges are finished to obtain a urethral bladder support (20).

3. The method for weaving the urethral bladder stent according to claim 2, characterized in that, Each group of positioning components (13) further includes two third positioning rods (133) arranged in the third row, the two third positioning rods (133) being arranged outside the two second positioning rods (132) located on the outside; The multiple sets of braided yarns also include a third set of braided yarns (143), in which multiple braided yarns of the third set of braided yarns (143) are respectively wound around the third positioning rod (133) in each set of positioning components (13), such that the two ends of the braided yarns of the first set of braided yarns (141) and the second set of braided yarns (142) pass through the inside of the two third positioning rods (133) of each set of positioning components (13).

4. The method for weaving the urethral bladder stent according to claim 3, characterized in that, Each of the positioning components (13) further includes two fourth positioning rods (134) arranged in the fourth row, the two fourth positioning rods (134) being arranged outside the two third positioning rods (133); The multiple sets of braided yarns also include a fourth set of braided yarns (144), in which multiple braided yarns of the fourth set of braided yarns (144) are respectively wound around the fourth positioning rod (134) in each set of positioning components (13), such that the two ends of the braided yarns of the first set of braided yarns (141), the second set of braided yarns (142) and the third set of braided yarns (143) pass through the inside of the two fourth positioning rods (134) of each set of positioning components (13).

5. The method for weaving a urethral bladder stent according to any one of claims 1 to 4, characterized in that, The positioning rod includes a bent portion (1303) for holding the braided yarn.

6. The method for weaving a urethral bladder stent according to claim 5, characterized in that, The positioning rod includes a first positioning section (1301) arranged horizontally and a second positioning section (1302) arranged vertically. The bottom end of the second positioning section (1302) is connected to the first positioning section (1301) to form the bent portion.

7. The method for weaving a urethral bladder stent according to any one of claims 1 to 4, characterized in that, Multiple sets of the positioning components (13) are equally spaced along the circumferential direction of the outer surface of the second segment (12).

8. The method for weaving a urethral bladder stent according to any one of claims 1 to 4, characterized in that, The positioning component (13) is provided in 3 to 6 groups.

9. A urethral bladder stent, characterized in that, It is woven by the weaving method of the urethral bladder stent (20) according to any one of claims 1 to 8, wherein one end of the urethral bladder stent (20) forms a multi-lobed structure and a gap is formed between two adjacent lobe structures (21).

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