A braiding method for the transition region of a Y-type stent

Abstract

The application discloses a Y-shaped stent transition region weaving method, which comprises the following steps: a main branch carrier and two branch carriers with equal diameters are used for the Y-shaped stent; N weaving points are uniformly divided on the projection of the main branch carrier along the axial direction; M weaving points are uniformly divided on the projection of each of the two branch carriers along the axial direction; and a wire is wound to the two ends of the main branch carrier and the branch carriers through the weaving points. The M weaving points of the two branch carriers each comprise L continuously arranged sub-weaving points and H continuously arranged main weaving points; M < N < 2*M; L + H + 2 = M; and the weaving points are arranged on the main branch carrier and the branch carriers to assist the wire to weave along the specified route and to reasonably distribute the three branch points to ensure the connection, so that the wire is smoothly transitioned to the intermediate structure, and the three branches can be connected two by two.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and in particular to a method for weaving the transition area of ​​a Y-shaped stent. Background Technology

[0002] Y-type stents consist of a main branch and two branches. The transition area between these three components is the main challenge in weaving. Existing technologies do not properly divide the transition area, resulting in uneven weaving structure in the transition area. Furthermore, existing technologies only weave the transition area separately, leading to poor transition between the transition area and the main branch and the two branches.

[0003] Therefore, how to design a weaving method for the transition area of ​​a Y-shaped scaffold that can quickly find the weaving path and achieve a good transition between the transition area and the support position is a technical problem that needs to be solved. Summary of the Invention

[0004] To address the technical problems of uneven weaving structure in the transition area of ​​Y-shaped stents and poor transition between the stent and the main branch and the two branches in existing technologies, this invention provides a weaving method for the transition area of ​​Y-shaped stents to solve the above problems.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a weaving method for the transition area of ​​a Y-shaped support, wherein the Y-shaped support adopts a main support carrier and two branch carriers of equal diameter. The main support carrier is evenly divided into N weaving points on its axial projection; the two branch carriers are evenly divided into M weaving points on their respective axial projections; the yarn passes through the weaving points when it winds to both ends of the main support carrier and the branch carriers.

[0006] The two branch carriers each have M weaving points, including L consecutively arranged sub-weaving points and H consecutively arranged main weaving points; where M < N < 2*M; L + H + 2 = M; the main weaving points are numbered the same as the adjacent weaving points on the main branch carrier located on the same side, and the main branch carrier and the two branch carriers are connected to each other through weaving points with different numbers; when transitioning from one branch to another, the weaving direction is changed.

[0007] Furthermore, the method includes the following steps:

[0008] S1: Spiral winding from the bottom braiding point P1 of the main support vehicle to the top braiding point P2 of the main support vehicle.

[0009] S2: Transition from weaving point P2 to weaving point P3 at the bottom of one of the branch vehicles.

[0010] S3: Then, after passing around the top end of the branch carrier, continue winding to the weaving point P4 at the bottom end of the branch carrier. If the weaving point P4 is a sub-weaving point, then execute step S4. If the weaving point P4 is a main weaving point, then execute step S5.

[0011] S4: Transition from weaving point P4 to the weaving point at the bottom of the adjacent branch vehicle, and then weave the branch vehicle in the same way as in step S3.

[0012] S5: Return from weaving point P4 to weaving point P2 at the top of the main support vehicle, spirally wind the main support vehicle to weaving point P5 at the bottom of the main support vehicle, and then continue weaving in the same way as in step S1 until all weaving points are connected.

[0013] Furthermore, the number of weaving points on the main support vehicle that connect to the two branch vehicles are the same and arranged symmetrically.

[0014] Furthermore, each weaving point on the main support vehicle is connected to two different weaving points on the branch vehicle.

[0015] Furthermore, L < H.

[0016] Furthermore, the circumferential angle α occupied by the L sub-knitting points is less than 80°.

[0017] Furthermore, M = 6 to 16, L ≤ 4.

[0018] Furthermore, the diameters of both the main support vehicle and the branch support vehicle are integers, and the number of weaving points on the main support vehicle is equal to its diameter.

[0019] Furthermore, the transition area of ​​the Y-shaped bracket is woven in a cross pattern.

[0020] Furthermore, the included angle between the main support vehicle and the branch vehicles, as well as between the two branch vehicles, is 90° to 110°.

[0021] Furthermore, the transition area of ​​the Y-shaped bracket is formed by weaving one or more threads, with each thread starting from the bottom of the main support or the top of the branch support.

[0022] The beneficial effects of this invention are:

[0023] (1) The present invention sets weaving points on the main support carrier and the branch carrier, assists the threads to weave along the prescribed route, and reasonably allocates the three support points to ensure connection, so that the threads can smoothly transition to the intermediate structure, and the three supports can be connected in pairs.

[0024] (2) By reasonably setting the number of weaving points, the present invention prevents the weaving threads at the intersection of the two branches from becoming too dense, making the overall weaving shape of the bracket more uniform and beautiful. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the structure of the carrier used in the Y-type bracket described in this invention;

[0027] Figure 2 This is a weaving diagram of the weaving method described in this invention;

[0028] Figure 3 This is a diagram showing the distribution of weaving points in the weaving method described in this invention;

[0029] Figure 4 This is a weaving diagram after the first step of weaving in Embodiment 2 of the weaving method described in this invention;

[0030] Figure 5 This is a weaving diagram of the main support vehicle after the first weaving step in Embodiment 2 of the weaving method described in this invention;

[0031] Figure 6 This is a weaving diagram of the right branch carrier after the first weaving step in Embodiment 2 of the weaving method described in this invention;

[0032] Figure 7 This is the weaving diagram after the second step of weaving in Embodiment 2 of the weaving method described in this invention;

[0033] Figure 8 This is a weaving diagram of the main support vehicle after the second weaving step in Embodiment 2 of the weaving method described in this invention;

[0034] Figure 9 This is a weaving diagram of the left branch carrier after the second weaving step in Embodiment 2 of the weaving method described in this invention;

[0035] Figure 10 This is the weaving diagram after the third step of the weaving process in Embodiment 2 of the present invention;

[0036] Figure 11 This is a weaving diagram of the main support vehicle after the third weaving step in Embodiment 2 of the weaving method described in this invention;

[0037] Figure 12 This is a weaving diagram of the left branch carrier after the third weaving step in Embodiment 2 of the weaving method described in this invention;

[0038] Figure 13This is a weaving diagram of the right branch carrier after the third weaving step in Embodiment 2 of the weaving method described in this invention;

[0039] Figure 14 This is the weaving diagram after the fourth step of the weaving process in Embodiment 2 of the present invention;

[0040] Figure 15 This is a weaving diagram of the main support vehicle after the fourth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0041] Figure 16 This is a weaving diagram of the right branch carrier after the fourth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0042] Figure 17 This is the weaving diagram after the fifth step of the weaving process in Embodiment 2 of the present invention;

[0043] Figure 18 This is a weaving diagram of the main support vehicle after the fifth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0044] Figure 19 This is a weaving diagram of the left branch carrier after the fifth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0045] Figure 20 This is the weaving diagram after the sixth step of the weaving process in Embodiment 2 of the present invention;

[0046] Figure 21 This is a weaving diagram of the main support vehicle after the sixth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0047] Figure 22 This is a weaving diagram of the right branch carrier after the sixth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0048] Figure 23 This is the weaving diagram after the seventh step of the weaving process in Embodiment 2 of the present invention;

[0049] Figure 24 This is a weaving diagram of the main support vehicle after the seventh weaving step in Embodiment 2 of the weaving method described in this invention;

[0050] Figure 25 This is a weaving diagram of the left branch carrier after the seventh step of weaving in Embodiment 2 of the weaving method described in this invention;

[0051] Figure 26 This is the weaving diagram after the eighth step of the weaving process in Embodiment 2 of the present invention;

[0052] Figure 27This is a weaving diagram of the main support vehicle after the eighth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0053] Figure 28 This is a weaving diagram of the left branch carrier after the eighth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0054] Figure 29 This is a weaving diagram of the right branch carrier after the eighth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0055] Figure 30 This is the weaving diagram after the ninth step of the weaving process in Embodiment 2 of the present invention;

[0056] Figure 31 This is a weaving diagram of the main support vehicle after the ninth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0057] Figure 32 This is a weaving diagram of the right branch carrier after the ninth step of weaving in Embodiment 2 of the weaving method described in this invention;

[0058] Figure 33 This is the weaving diagram after the tenth step of the weaving method in Embodiment 2 of the present invention;

[0059] Figure 34 This is a diagram of the main support vehicle weaving line after the tenth weaving step in Embodiment 2 of the weaving method described in this invention;

[0060] Figure 35 This is the weaving diagram of the left branch carrier after the tenth weaving step in Embodiment 2 of the weaving method described in this invention.

[0061] In the diagram, 1 is the main support vehicle, 2 is the branch vehicle, 3 is the branch weaving point, and 4 is the main weaving point. Detailed Implementation

[0062] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0063] The main support carrier 1 and the two branch carriers 2 connected to each other in this invention refer to carriers used for weaving medical stents. Pins can be inserted into the carriers, and corresponding pins are inserted according to the distribution requirements of the weaving points for winding the threads.

[0064] like Figures 1-3As shown, a method for weaving the transition area of ​​a Y-shaped support is described. The Y-shaped support uses a main support carrier 1 and two branch carriers 2 of equal diameter. The main support carrier 1 is evenly divided into N weaving points on its axial projection. The two branch carriers 2 are evenly divided into M weaving points on their respective axial projections. When the yarn is wound to both ends of the main support carrier 1 and the branch carriers 2, it passes through the weaving points.

[0065] Each of the two branch carriers 2 has M weaving points, including L consecutively arranged sub-weaving points 3 and H consecutively arranged main weaving points 4. Sub-weaving points 3 are used to connect two adjacent branch carriers 2, and main weaving points 4 are used to connect branch carriers 2 and main branch carriers 1. M < N < 2*M; L + H + 2 = M. The quantitative relationship between M and N ensures that the number of weaving points of the main branch carrier 1 can be allocated to the main weaving points 4 of each branch carrier 2 (i.e., M < N), while there are also extra weaving points on the branch carriers 2 that can be used as sub-weaving points 3 (N < 2*M). The main weaving points 4 have the same number as the adjacent weaving points on the main branch carrier 1 located on the same side. The main branch carrier 1 and the two branch carriers 2 are connected to each other through weaving points with different numbers, so that the threads can be superimposed in a cross-shaped manner. When transitioning from one branch to another, the weaving direction is changed, so that the threads can be stretched in two different directions from the transition point, which helps to tighten them.

[0066] The method includes the following steps:

[0067] S1: Spiral winding from the bottom weaving point P1 of the main support carrier 1 to the top weaving point P2 of the main support carrier 1. The bottom of the main support carrier 1 refers to the end of the main support carrier 1 that is away from the branch carrier 2.

[0068] S2: Transition from weaving point P2 to weaving point P3 at the bottom of one of the branch carriers 2. The bottom of the branch carrier 2 refers to the end of the branch carrier 2 that connects to the main support carrier 1.

[0069] S3: Then, after passing around the top end of the branch carrier 2, continue winding to the weaving point P4 at the bottom of the branch carrier 2. If the weaving point P4 is a sub-weaving point 3, then execute step S4. If the weaving point P4 is a main weaving point 4, then execute step S5.

[0070] S4: From weaving point P4, transition to the sub-weaving point 3 at the bottom of the adjacent branch carrier 2. This step connects the weaving points of the main branch carrier 1 and the two branch carriers 2 sequentially, and then weaves the branch carrier 2 in the same way as in step S3. Afterwards, the two situations described in step S3 also exist at the bottom of the branch carrier 2.

[0071] S5: Return from weaving point P4 to weaving point P2 at the top of the main support carrier 1, spirally wind the main support carrier 1 to weaving point P5 at the bottom of the main support carrier 1, and then continue weaving in the same way as in step S1 until all weaving points are connected.

[0072] Since the two branch supports have the same diameter, it is preferable that the number of braiding points on the main support 1 that connect to the two branch supports 2 are the same and arranged symmetrically. This ensures that the braided support structure is symmetrical and has a smoother surface. The branch braiding points 3 are preferably located in the area directly opposite the two branch supports 2, so that the threads can connect to the nearest braiding point when transitioning between adjacent branches.

[0073] To ensure the orderly shape of the woven structure, the threads are woven using the same winding rules during the weaving process of the same carrier. The winding rules include the winding method and the winding cycle. In this invention, the transition area of ​​the Y-shaped bracket is preferably woven in a cross pattern, and the woven bracket grid is a series of diamond-shaped grids.

[0074] Once the weaving points are divided and the transition area of ​​the Y-shaped support is woven using the specified winding rules, the woven support can achieve the following: each weaving point on the main support carrier 1 is connected to two different weaving points on the branch carrier 2. Simultaneously, because the sub-weaving points 3 connect adjacent branch carriers 2, any two of the three supports can be connected to each other.

[0075] Preferably, all three branches of the Y-shaped support use cross braiding. The braiding principle for the transition area of ​​the Y-shaped support is as follows: the threads are braided at a certain braiding angle in a clockwise or counterclockwise direction to the braiding point, and then transition to the adjacent braiding points of the adjacent branches in a clockwise or counterclockwise order. Before braiding, each braiding point is numbered. The numbering rule is that the main braiding point 4 has the same number as the adjacent braiding point on the main support 1 located on the same side. During braiding, the main support 1 and the two branch supports 2 are connected to each other through braiding points with different numbers. In this invention, "counterclockwise" or "clockwise" refers to the direction viewed from the side where the braiding end point is located.

[0076] from Figure 2 As can be seen, since the basic shape of all three branches is cylindrical, to prevent the braided yarns at the intersection from becoming too dense, L < H is set. In further design, the circumferential angle α occupied by the L sub-weaving points 3 is less than 80°, such as... Figure 3 As shown, the circumferential angle α refers to the circumferential angle formed by taking the centers of the two outermost weaving points 3 as the boundary.

[0077] The finished Corss braided scaffold consists of a grid formed by intersecting filaments. According to micro-element analysis, the side length and angle of a single grid can largely reflect the overall performance of the scaffold. Based on experience and competitor analysis, the diameters of the main support 1 and the branch support 2 are usually integers. The number of braiding points of the main support 1 is equal to its diameter. The number of braiding points of the branch support 2 can fluctuate slightly, but the grid shape must be a rhombus with a side length of 2-2.5mm to better meet the requirements of radial force and bending performance. The braiding angle of the three branches is preferably set between 90° and 110° according to the requirement of 50% shortening rate of the scaffold.

[0078] Since the diameter of the branch carrier 2 ranges from 6 to 16 mm, M = 6 to 16. Based on the setting requirements of the circumferential angles occupied by the L branch weaving points 3, such as... Figure 3 As shown, L≤4.

[0079] Based on the above principles, the number of support nodes and the weaving route for all specifications can be determined. For example, for a support with a diameter of 20-16-16, if the number of weaving points for the main support carrier 1 is selected as 20, then the maximum number of weaving points for the branch carrier 2 is 14, and the maximum number of weaving points for the sub-weaving points 3 is 4. By determining the number of weaving points, the intermediate connection method between the three supports can be obtained, and the weaving diagram can be output.

[0080] The transition area of ​​the Y-shaped bracket can be woven from one or more threads, with each thread starting from the bottom of the main support 1 or the top of the branch support 2.

[0081] The weaving method is described below with reference to two specific embodiments.

[0082] Example 1

[0083] like Figure 2 As shown, a support frame with a braided diameter of 22-16-16 is divided into 22 braiding points on the main support carrier 1, numbered sequentially from 1 to 22. Each of the two branch carriers 2 has 14 braiding points. The left branch carrier 2 is numbered sequentially from 1 to 14, and the right branch carrier 2 is numbered sequentially from 11 to 24. The numbering principle for the braiding points is to ensure that adjacent areas of the main support and branches have consistent numbers, and that braiding points with the same number are close together. When connecting the threads, different numbers between adjacent branches are connected to form a cross-grid.

[0084] For example, the thread starts from braiding point 1 at the bottom of the main support vehicle 1 and weaves clockwise (clockwise when viewed from the bottom of the main support vehicle 1) to braiding point 8 at the top of the main support vehicle 1. Then, it transitions clockwise to braiding point 9 at the bottom of the left branch vehicle 2, and continues to weave upwards clockwise along the left branch vehicle 2 (clockwise when viewed from the bottom of the left branch vehicle 2). After passing the top end of the left branch vehicle 2, it continues to weave downwards clockwise (clockwise when viewed from the top of the left branch vehicle 2). When it reaches the bottom end of the left branch vehicle 2, it continues to weave downwards as follows. Figure 2 There are two possible scenarios. Scenario 1: The thread reaches weaving point 7 at the bottom of the left branch vehicle 2. In this case, the thread continues clockwise to weave to weaving point 8 at the top of the main branch vehicle 1, then continues clockwise down the main branch vehicle 1 back to its bottom, completing one weaving cycle. Scenario 2: The thread reaches weaving point 11 at the bottom of the left branch vehicle 2. In this case, the thread should transition counter-clockwise to weaving point 22 on the right branch vehicle 2. Then, the thread continues counter-clockwise on the right branch vehicle 2. After completing the weaving of the right branch vehicle 2, you can proceed with the next weaving according to either scenario 1 or Scenario 2. This method allows for a smoother transition between each thread, avoiding noticeable transition marks at intersections.

[0085] Example 2

[0086] like Figure 4 As shown, a braided support with a diameter of 10-6-6 is divided into 10 braiding points on the main support carrier 1, numbered sequentially from 1 to 10. Each of the two branch carriers 2 has 6 braiding points. The left branch carrier 2 is numbered sequentially from 1 to 6, and the right branch carrier 2 is numbered sequentially from 6 to 11. Braiding points 1 to 5 on the left branch carrier 2 are close to or directly opposite braiding points 1 to 5 on the main support carrier 1. Braiding points 7 to 10 on the right branch carrier 2 are close to or directly opposite braiding points 7 to 10 on the main support carrier 1. Braiding point 6 on the left branch carrier 2 is close to or directly opposite braiding point 6 on the right branch carrier 2.

[0087] 1. Clockwise: Main branch 1 (down) -- Main branch 8 (up) -- Based on proximity and different numbering principle -- Right branch 9 (down) -- Right branch 6 (up) -- Right branch 9 (down) -- Main branch 10 (up) -- Main branch 7 (down). The woven grid pattern is as follows: Figure 4 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 5 As shown, the braided wiring of the right-side branch vehicle 2 is as follows: Figure 6 As shown, the arrows indicate the weaving direction.

[0088] The thread starts from the No. 1 braiding point at the bottom of the main support vehicle 1 and is braided clockwise to the No. 8 braiding point at the top of the main support vehicle 1. Then, based on the principle of proximity and different numbering, it transitions clockwise to the No. 9 braiding point at the bottom of the right branch vehicle 2. It continues to braid clockwise upwards along the right branch vehicle 2, bypassing the No. 6 braiding point at the top of the right branch vehicle 2, and continues to braid clockwise downwards back to the No. 9 braiding point at the bottom. The thread continues to transition clockwise to the No. 10 braiding point at the top of the main support vehicle 1, and then continues to braid clockwise downwards along the main support vehicle 1 to the No. 7 braiding point at the bottom of the main support vehicle 1.

[0089] 2. Clockwise: Main branch 7 (down) -- Main branch 4 (up) -- Based on proximity and different numbering -- Left branch 5 (down) -- Left branch 2 (up) -- Left branch 5 (down) -- Main branch 6 (up) -- Main branch 3 (down). The woven grid pattern is as follows: Figure 7 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 8 As shown, the braided wiring of the left branch vehicle 2 is as follows: Figure 9 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0090] The thread is woven clockwise from point 7 at the bottom of the main support vehicle 1 to point 4 at the top of the main support vehicle 1. Based on the principle of proximity and different numbers, it transitions clockwise to point 5 at the bottom of the left branch vehicle 2. It continues to weave clockwise upwards along the left branch vehicle 2, passing around point 2 at the top of the left branch vehicle 2, and then continues to weave clockwise downwards back to point 5 at the bottom. The thread continues to transition clockwise to point 6, which is adjacent to the top of the main support vehicle 1. Then it continues to weave clockwise downwards along the main support vehicle 1 to point 3 at the bottom of the main support vehicle 1.

[0091] 3. Clockwise: Main branch 3 (down) -- Main branch 10 (up) -- Based on the principle of proximity and different numbering -- Right branch 11 (down) -- Right branch 8 (up) -- Right branch 11 (down) (At this point, the closest branch is the left branch, according to the principle of changing the weaving direction when transitioning from one branch to another) -- Counterclockwise transition to left branch 6 (down) -- Left branch 3 (up) -- Left branch 6 (down) -- Main branch 5 (up) -- Main branch 8 (down); Weaving grid lines as follows Figure 10 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 11 As shown, the braided wiring of the left branch vehicle 2 is as follows: Figure 12 As shown, the braided wiring of the right-side branch vehicle 2 is as follows: Figure 13As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0092] The thread starts from point 3 at the bottom of the main support vehicle 1 and weaves clockwise to point 10 at the top of the main support vehicle 1. Then, based on the principle of proximity and different numbers, it transitions clockwise to point 11 at the bottom of the right branch vehicle 2. It continues to weave clockwise upwards along the right branch vehicle 2, passing point 8 at the top of the right branch vehicle 2, and then continues to weave clockwise downwards back to point 11 at the bottom. The thread then transitions counterclockwise to point 6 at the bottom of the left branch vehicle 2. It continues to weave counterclockwise upwards along the left branch vehicle 2, passing point 3 at the top of the left branch vehicle 2, and then continues to weave counterclockwise downwards back to point 6 at the bottom. It then continues to transition counterclockwise to point 5 at the top of the main support vehicle 1, and then continues counterclockwise downwards along the main support vehicle 1 to point 8 at the bottom.

[0093] 4. Counterclockwise: Main branch 8 (down) -- Main branch 1 (up) -- Right branch 10 (down) -- Right branch 7 (up) -- Right branch 10 (down) -- Based on the nearest branch with different numbers -- Main branch 9 (up) -- Main branch 2 (down); Weaving grid lines as follows Figure 14 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 15 As shown, the braided wiring of the right-side branch vehicle 2 is as follows: Figure 16 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0094] The thread starts from braid point 8 at the bottom of the main support vehicle 1 and weaves counterclockwise to braid point 1 at the top of the main support vehicle 1. Then, it transitions counterclockwise to braid point 10 at the bottom of the right branch vehicle 2. It continues to weave counterclockwise upwards along the right branch vehicle 2, passing braid point 7 at the top of the right branch vehicle 2, and then continues to weave counterclockwise downwards back to braid point 10 at the bottom. Based on the principle of proximity and different number, the thread continues to transition counterclockwise to braid point 9, which is adjacent to the top of the main support vehicle 1. Then, it continues to weave counterclockwise downwards along the main support vehicle 1 to braid point 2 at the bottom of the main support vehicle 1.

[0095] 5. Counterclockwise: Main branch 2 (down) -- Main branch 5 (up) -- Based on the nearest branch with different numbers -- Left branch 4 (down) -- Left branch 1 (up) -- Left branch 4 (down) -- Main branch 3 (up) -- Main branch 6 (down); The woven grid pattern is as follows... Figure 17 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 18As shown, the braided wiring of the left branch vehicle 2 is as follows: Figure 19 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0096] The thread starts from the No. 2 braiding point at the bottom of the main support vehicle 1 and weaves counterclockwise to the No. 5 braiding point at the top of the main support vehicle 1. Based on the principle of proximity and different number, it transitions counterclockwise to the No. 4 braiding point at the bottom of the left branch vehicle 2. It continues to weave counterclockwise upwards along the left branch vehicle 2, bypassing the No. 1 braiding point at the top of the left branch vehicle 2, and continues to weave counterclockwise downwards back to the No. 4 braiding point at the bottom. The thread continues to transition counterclockwise to the No. 3 braiding point at the top of the main support vehicle 1, and then continues to weave counterclockwise downwards along the main support vehicle 1 to the No. 6 braiding point at the bottom of the main support vehicle 1.

[0097] 6. Counterclockwise: Main branch 6 (down) -- Main branch 9 (up) -- Based on the nearest branch with different numbers -- Right branch 8 (down) -- Right branch 11 (up) -- Right branch 8 (down) -- Main branch 7 (up) -- Main branch 10 (down); Weaving grid lines as follows Figure 20 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 21 As shown, the braided wiring of the right-side branch vehicle 2 is as follows: Figure 22 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0098] The thread starts from braid point 6 at the bottom of the main support vehicle 1 and weaves counterclockwise to braid point 9 at the top of the main support vehicle 1. Then, it transitions counterclockwise to braid point 8 at the bottom of the right branch vehicle 2. It continues to weave counterclockwise upwards along the right branch vehicle 2, passing braid point 11 at the top of the right branch vehicle 2, and then continues to weave counterclockwise downwards back to braid point 8 at the bottom. The thread continues to transition counterclockwise to braid point 7, which is adjacent to the top of the main support vehicle 1. Then, it continues to weave counterclockwise downwards along the main support vehicle 1 to braid point 10 at the bottom of the main support vehicle 1.

[0099] 7. Counterclockwise: Main branch 10 (down) -- Main branch 3 (up) -- Based on the nearest branch with different numbers -- Left branch 2 (down) -- Left branch 5 (up) -- Left branch 2 (down) -- Main branch 1 (up) -- Main branch 4 (down); Weaving grid lines as follows Figure 23 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 24 As shown, the braided wiring of the left branch vehicle 2 is as follows: Figure 25 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0100] The thread starts from braiding point 10 at the bottom of the main support vehicle 1 and weaves counterclockwise to braiding point 3 at the top of the main support vehicle 1. Then, it transitions counterclockwise to braiding point 2 at the bottom of the left branch vehicle 2. It continues to weave counterclockwise upwards along the right branch vehicle 2, passing braiding point 5 at the top of the right branch vehicle 2, and then continues to weave counterclockwise downwards back to braiding point 2 at the bottom. The thread continues to transition counterclockwise to point 1, which is adjacent to the top of the main support vehicle 1. Then, it continues to weave counterclockwise downwards along the main support vehicle 1 to braiding point 4 at the bottom of the main support vehicle 1.

[0101] 8. Counterclockwise: Main branch 4 (down) -- Main branch 7 (up) -- Based on the principle of proximity and different numbering -- Right branch 6 (down) -- Right branch 9 (up) -- Right branch 6 (down) (At this point, the closest branch is the left branch, according to the principle of changing the weaving direction when transitioning from one branch to another) -- Clockwise transition to left branch 1 (down) -- Left branch 4 (up) -- Left branch 1 (down) -- Based on the principle of proximity and different numbering -- Main branch 2 (up) -- Main branch 9 (down); Weaving grid lines as follows Figure 26 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 27 As shown, the braided wiring of the left branch vehicle 2 is as follows: Figure 28 As shown, the braided wiring of the right-side branch vehicle 2 is as follows: Figure 29 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0102] The thread starts from point 4 at the bottom of the main support vehicle 1 and weaves counterclockwise to point 7 at the top of the main support vehicle 1. Then, it transitions counterclockwise to point 6 at the bottom of the right branch vehicle 2. It continues to weave counterclockwise upwards along the right branch vehicle 2, passing point 9 at the top of the right branch vehicle 2, and then continues to weave counterclockwise downwards back to point 6 at the bottom. Then, the weaving direction is changed, and the thread transitions clockwise to point 1 at the bottom of the left branch vehicle 2. It continues to weave clockwise upwards along the left branch vehicle 2, passing point 4 at the top of the left branch vehicle 2, and then continues to weave clockwise downwards back to point 1 at the bottom. It then transitions clockwise to point 2 at the top of the main support vehicle 1, and then continues clockwise downwards along the main support vehicle 1 to point 9 at the bottom.

[0103] 9. Clockwise: Main branch 9 (down) -- Main branch 6 (up) -- Right branch 7 (down) -- Right branch 10 (up) -- Right branch 7 (down) -- Based on the nearest branch with a different number -- Main branch 8 (up) -- Main branch 5 (down); Weaving the grid circuit as follows Figure 30 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 31 As shown, the braided wiring of the right-side branch vehicle 2 is as follows: Figure 32 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0104] The thread starts from braid point 9 at the bottom of the main support vehicle 1 and weaves clockwise to braid point 6 at the top of the main support vehicle 1. Then, it transitions clockwise to braid point 7 at the bottom of the right branch vehicle 2. It continues to weave clockwise upwards along the right branch vehicle 2, passing braid point 10 at the top of the right branch vehicle 2, and then continues to weave clockwise downwards back to braid point 7 at the bottom. The thread continues to transition clockwise to braid point 8, which is adjacent to the top of the main support vehicle 1. Then, it continues to weave clockwise downwards along the main support vehicle 1 to braid point 5 at the bottom of the main support vehicle 1.

[0105] 10. Clockwise: Main branch 5 (down) -- Main branch 2 (up) -- Based on the nearest branch with different numbers -- Left branch 3 (down) -- Left branch 6 (up) -- Left branch 3 (down) -- Main branch 4 (up) -- Main branch 1 (down); The woven grid pattern is as follows... Figure 33 As shown, the braided wiring of the main support vehicle 1 is as follows: Figure 34 As shown, the braided wiring of the left branch vehicle 2 is as follows: Figure 35 As shown, solid lines represent the parts being woven, dashed lines represent the parts that have already been woven, and arrows indicate the direction of weaving.

[0106] The thread starts from the No. 5 braiding point at the bottom of the main support vehicle 1 and is braided clockwise to the No. 2 braiding point at the top of the main support vehicle 1. Then, it transitions clockwise to the No. 3 braiding point at the bottom of the left branch vehicle 2. It continues to braid clockwise upwards along the right branch vehicle 2, passing the No. 6 braiding point at the top of the right branch vehicle 2, and then continues to braid clockwise downwards back to the No. 3 braiding point at the bottom. The thread continues to transition clockwise to the No. 4 braiding point at the top of the main support vehicle 1. Then, it continues to braid clockwise downwards along the main support vehicle 1 to the No. 1 braiding point at the bottom of the main support vehicle 1.

[0107] It is important to note that once the clockwise or counterclockwise weaving direction of the filaments is determined at the beginning of the weaving process, the weaving direction of subsequent transition and branch sections will also be determined accordingly. This allows the filaments to cross, resulting in better stability of the support structure. It is also important to note that changing the number of nodes in the three branches will affect the connection method of the intermediate filaments, but the overall principle remains the same: each output filament connects to the two nearest filaments on the other two branches, but with different weaving points. Following this scheme results in a smoother transition of the intermediate structure, and each of the three branches can be connected to any two of them.

[0108] In conclusion, the following summary can be made:

[0109] The Y-shaped support is woven from a main branch and two branches. To ensure a smooth transition, all three branches must have filaments for the transition. Generally, the diameter of the main branch is larger than that of the branches. The number of weaving points on each branch is set to match the diameter of each branch. The number of weaving points on the main branch is generally greater than that on the branches. For a stable connection between the three branches, each pair of branches must have filaments for connection; that is, the connection points are ensured through reasonable allocation. The key lies in the connection method of the intermediate transition section. The point allocation rule adopted in this design is that the two branches must first provide half of the number of main branch points for connection with the main branch, and the remaining points are for the two branches to connect with each other. The principle of filament connection between branches is to connect different points between two branches in a clockwise or counterclockwise direction to form the connection of the transition section. The filaments on each branch are woven using a cross-weaving method.

[0110] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0111] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A method for weaving the transition area of ​​a Y-shaped support, characterized in that: The Y-shaped support uses a main support (1) and two branch supports (2) of equal diameter. The main support (1) is evenly divided into N braiding points on its axial projection. The two branch supports (2) are evenly divided into M braiding points on their respective axial projections. The yarn passes through the braiding points when it winds around to the two ends of the main support (1) and the branch supports (2). The two branch vehicles (2) each have M weaving points, including L consecutively arranged sub-weaving points (3) and H consecutively arranged main weaving points (4); among them, L+H+2=M; The main weaving point (4) has the same number as the adjacent weaving point on the main support vehicle (1) on the same side. The main support vehicle (1) and the two branch vehicles (2) are connected to each other through weaving points with different numbers. When transitioning from one branch to another, the weaving direction is changed. The method includes the following steps: S1: Spiral winding from the bottom weaving point P1 of the main support vehicle (1) to the top weaving point P2 of the main support vehicle (1); S2: Transition from weaving point P2 to weaving point P3 at the bottom of one of the branch vehicles (2); S3: Then, after passing around the top end of the branch carrier (2), continue to wrap around to the weaving point P4 at the bottom of the branch carrier (2). If the weaving point P4 is a sub-weaving point (3), then execute step S4. If the weaving point P4 is a main weaving point (4), then execute step S5. S4: Transition from weaving point P4 to the weaving point (3) at the bottom of the adjacent branch vehicle (2), and then weave the branch vehicle (2) in the same way as in step S3. S5: Return from weaving point P4 to weaving point P2 at the top of the main support vehicle (1), spirally wind it on the main support vehicle (1) to weaving point P5 at the bottom of the main support vehicle (1), and then continue weaving in the same way as in step S1 until all weaving points are connected.

2. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 1, characterized in that: The number of weaving points on the main support vehicle (1) that connect to the two branch vehicles (2) are the same and arranged symmetrically.

3. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 1, characterized in that: Each weaving point on the main support vehicle (1) is connected to two different weaving points on the branch vehicle (2).

4. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 1, characterized in that: L < H.

5. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 4, characterized in that: The circumferential angle a occupied by L sub-weaving points (3) is less than 80°.

6. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 5, characterized in that: M = 6~16, L ≤ 4.

7. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 6, characterized in that: The diameters of the main support vehicle (1) and the branch vehicle (2) are both integers, and the number of weaving points of the main support vehicle (1) is equal to its diameter.

8. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 1, characterized in that: The transition area of ​​the Y-shaped bracket is woven in a cross pattern.

9. The weaving method for the transition area of ​​the Y-shaped bracket according to claim 3, characterized in that: The included angle between the main support vehicle (1) and the branch vehicle (2) and the two branch vehicles (2) is 90°~110°.

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