Knitting garment, system and method

Abstract

The embodiment of the present application provides a weaving tool, system and method, wherein the weaving tool comprises a core rod for fixing a cutting section of a stent retriever; and a dividing disc fixed to the core rod, the dividing disc having a plurality of threading grooves, wherein one threading groove corresponds to one spindle of a knitting machine, and the knitting machine has a plurality of spindles. By using the above technical scheme, the weaving thread can be pre-contained in the threading groove of the weaving tool before the weaving tool is assembled to the knitting machine, the pre-connection of the weaving thread and the spindle is realized, and then the actual connection of the weaving thread and the corresponding spindle is completed when the weaving tool is assembled to the knitting machine, so that the operator does not need to stand in front of the knitting machine to perform the threading operation, thereby the probability of disorder in the threading operation can be reduced, and the production efficiency of the stent retriever is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of medical device technology, and in particular to a knitting tool, system and method. Background Art

[0002] During interventional procedures, stent retrievers are often used as interventional devices to remove blood clots from blood vessels and restore vascular patency. These stent retrievers consist of a cutting segment, which is used to cut and separate blood clots, and a braided segment, which is used to collect blood clots.

[0003] The braided segments of the thrombectomy stent can be formed using a braiding process, which is typically performed using a braiding machine. Therefore, providing a technical solution to improve the production efficiency of the thrombectomy stent has become a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a braiding tool, system, and method that can improve the production efficiency of thrombus removal stents.

[0005] An embodiment of the present invention provides a knitted work garment, comprising:

[0006] a mandrel for fixing the cut segment of the thrombectomy stent;

[0007] A wire distribution disc is fixed to the mandrel, and the wire distribution disc has a plurality of wire threading grooves, wherein one wire threading groove corresponds to a spindle of a braiding machine, and the braiding machine has a plurality of spindles.

[0008] Optionally, the distribution tray further has a coaxially arranged first connecting hole, and the core rod coaxially passes through the first connecting hole and is fixedly connected to the distribution tray.

[0009] Optionally, the distribution board includes:

[0010] a disc body, the disc body comprising: a first disc surface facing the cutting section, a second disc surface opposite to the first disc surface, and a disc body side surface located between the first disc surface and the second disc surface;

[0011] The plurality of threading grooves are opened at the edge of the first disk surface and pass through the side surface of the disk body.

[0012] Optionally, a plurality of radially extending indicator lines are provided on the first disk surface, wherein one indicator line corresponds to one threading groove.

[0013] Optionally, the distribution board further includes:

[0014] a first connecting portion, the first connecting portion being coaxially disposed on the second disk surface;

[0015] The first connecting hole passes through the first connecting portion, and the core rod coaxially passes through the first connecting hole and is fixedly connected to the first connecting portion.

[0016] Optionally, the first connecting portion has a second connecting hole, and the second connecting hole is connected to the first connecting hole;

[0017] The distribution board also includes:

[0018] The first connecting member is threadedly engaged with the second connecting hole, and the first connecting member passes through the second connecting hole to fix the core rod.

[0019] Optionally, the distribution board includes:

[0020] Two sub-distribution trays, each comprising:

[0021] A sub-disk body, a first sub-connecting portion, and a second sub-connecting portion; wherein the two sub-disk bodies cooperate to form the disk body, the two first sub-connecting portions cooperate to form the first connecting portion, and the second sub-connecting portion is provided with a third connecting hole;

[0022] The distribution board also includes:

[0023] The second connecting member is threadedly engaged with the third connecting hole, and the second connecting member passes through the third connecting holes corresponding to the two sub-distribution plates, so that the two sub-distribution plates can be detachably connected.

[0024] Optionally, the knitting tool further includes: a blocking piece that is interference-fitted with the threading groove.

[0025] Optionally, the arc of the wire threading groove projected on a projection plane perpendicular to the axis of the wire threading groove is greater than 180 degrees and less than 360 degrees.

[0026] Optionally, the mandrel comprises: a head portion, a middle portion, and a clamping portion sequentially arranged along the axial direction of the mandrel;

[0027] The head portion is used to fix the cutting segment, the middle portion is used to fix the line distribution plate, and the clamping portion is connected to the braiding machine.

[0028] Accordingly, an embodiment of the present invention further provides a weaving system, comprising:

[0029] a braiding machine having a plurality of spindles;

[0030] The knitting tool as described in any of the aforementioned embodiments is detachably connected to the knitting machine.

[0031] Accordingly, an embodiment of the present invention further provides a weaving method, comprising:

[0032] Providing a knitting machine and a knitting tool as described in any of the above embodiments;

[0033] Fixing the cut section of the thrombectomy stent to the core rod of the braided tool;

[0034] Fixing the distribution plate of the braiding tool to the mandrel;

[0035] The braided wire is passed through the corresponding wire grooves in the cutting section and the wire distribution plate;

[0036] fixing the mandrel on the braiding machine;

[0037] connecting the braiding wire in the threading groove to the corresponding spindle in the braiding machine;

[0038] removing the distribution plate from the mandrel;

[0039] The braiding machine is started to perform braiding.

[0040] Compared with the prior art, the technical solution of the embodiment of the present invention has the following advantages:

[0041] In the braiding tooling, braiding system, and braiding method provided by the embodiments of the present invention, a core rod is provided to fix the cut section of the thrombectomy stent; a threading slot corresponds to a spindle of the braiding machine, and the braiding wire can be placed in the threading slot corresponding to the spindle before being connected to the corresponding spindle, thereby pre-connecting the braiding wire and the spindle. In other words, before the braiding tooling is assembled to the braiding machine, the braiding wire can be pre-placed in the threading slot of the braiding tooling to pre-connect the braiding wire and the spindle. Then, when the braiding tooling is assembled to the braiding machine, the actual connection between the braiding wire and the corresponding spindle is completed, so that the operator does not need to stand in front of the braiding machine to perform the threading operation, thereby reducing the probability of confusion during the threading operation and improving the production efficiency of the thrombectomy stent. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of this specification, the following briefly introduces the drawings required for use in the embodiments of this specification or the description of the prior art. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0043] Figure 1 A schematic structural diagram of a thrombus removal stent is shown.

[0044] Figure 2 A structural schematic diagram of a knitting tool in an embodiment of the present invention is shown.

[0045] Figure 3A schematic structural diagram of a distribution tray in an embodiment of the present invention is shown.

[0046] Figure 4 Shown Figure 3 Schematic diagram of the left side.

[0047] Figure 5 A schematic structural diagram of a sub-distribution tray in an embodiment of the present invention is shown.

[0048] Figure 6 Shown Figure 5 Schematic diagram of the right side.

[0049] Figure 7 A schematic structural diagram of a core rod in an embodiment of the present invention is shown.

[0050] Figure 8 A schematic structural diagram of the head of a core rod in an embodiment of the present invention is shown.

[0051] Figure 9 A flow chart showing the steps of a weaving method in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0052] As described in the background, stent retrievers are often used in interventional procedures to remove blood clots from blood vessels and restore vascular patency. These stent retrievers have a cutting segment and a braiding segment. The cutting segment is used to cut and separate blood clots, while the braiding segment is used to collect blood clots.

[0053] refer to Figure 1 , Figure 1 A schematic structural diagram of a thrombus removal stent is shown.

[0054] As an example, the thrombectomy stent comprises a cutting segment A and a braided segment B. Cutting segment A is a hollow structure formed by multiple cutting rods a; braided segment B is a mesh structure woven from braided wires b, with one end of braided segment A connected to one end of cutting segment B. During use, the thrombectomy stent first cuts and separates the thrombus within the blood vessel using cutting segment A, then collects the thrombus using braided segment B, thereby removing the collected thrombus.

[0055] The cutting and braided segments in a thrombectomy stent have different structures and are usually manufactured in stages.

[0056] As an example, the manufacturing steps of the thrombectomy stent include: first, forming a cutting segment by laser cutting the material; then, putting the cutting segment on a braiding mandrel, and passing the braiding wire through the threading hole on the cutting rod at one end of the cutting segment according to a specific threading rule; then, installing the braiding mandrel on a braiding machine, and connecting the braiding wire on the cutting segment to the corresponding spindle on the braiding machine; then, starting the braiding machine to braid, so as to produce the braided segment.

[0057] In actual work, the inventor found that specific threading rules need to be followed when threading. The more complex the stent design, the more complex the threading rules. The lateral size of the braiding machine is large (for example, 1m to 2m). When threading, the operator needs to stand in front of the braiding machine, bend over or lean forward to get close to the cutting section on the core rod to perform threading and connecting operations, which reduces the operator's comfort and increases the chance of confusion in the threading operation, thereby affecting the quality and production efficiency of the stent.

[0058] Therefore, how to provide a technical solution to improve the production efficiency of thrombectomy stents has become a technical problem that needs to be urgently solved by those skilled in the art.

[0059] In order to solve the above technical problems, an embodiment of the present invention provides a braiding tool, which includes: a core rod for fixing the cutting segment of the thrombus removal bracket; a wire distribution disk fixed to the core rod, and the wire distribution disk has multiple wire threading grooves, wherein one wire threading groove corresponds to a spindle of a braiding machine, and the braiding machine has multiple spindles.

[0060] In the weaving tooling provided by the embodiment of the present invention, the cutting section and the wire distribution disk of the bracket can be fixed by arranging a core rod; by arranging multiple wire threading grooves on the wire distribution disk, and one wire threading groove corresponds to one spindle, and one wire threading groove also corresponds to a weaving wire connected to the spindle, the weaving wire can be placed in the corresponding wire threading groove before being connected to the corresponding spindle, so that the threading operation between the weaving wire and the cutting section and the pre-connection with the corresponding spindle can be realized before the weaving tooling is assembled to the weaving machine, so that the operator does not need to stand in front of the weaving machine to perform the threading operation, thereby reducing the chance of confusion in the threading operation and improving the production efficiency of the bracket.

[0061] To enable those skilled in the art to better understand and implement the embodiments of the present invention, the concepts, schemes, principles and advantages of the embodiments of the present invention are described in detail below with reference to the accompanying drawings and through specific application examples.

[0062] Combined with reference Figures 2 to 4 ,in, Figure 2 FIG. 1 shows a structural diagram of a knitting tool in an embodiment of the present invention. Figure 3 FIG2 shows a schematic structural diagram of a distribution tray according to an embodiment of the present invention. Figure 4 Shown Figure 3 Schematic diagram of the left side.

[0063] In this embodiment, the braiding tool includes: a core rod 1 for fixing the cut section of the thrombus removal bracket; a wire distribution plate 2 fixed to the core rod 1, the wire distribution plate 2 having a plurality of threading grooves m, wherein one threading groove m corresponds to a spindle of a braiding machine, and the braiding machine has multiple spindles.

[0064] In the weaving tooling provided by the embodiment of the present invention, by setting a core rod 1, the cutting section and the wire distribution disk of the bracket can be fixed; by setting multiple threading grooves on the wire distribution disk, and one threading groove corresponds to one spindle, and one threading groove also corresponds to a weaving wire connected to the spindle, the weaving wire can be placed in the corresponding threading groove before being connected to the corresponding spindle, so that the threading operation between the weaving wire and the cutting section and the pre-connection with the corresponding spindle can be realized before the weaving tooling is assembled to the weaving machine, so that the operator does not need to stand in front of the weaving machine to perform the threading operation, thereby reducing the chance of confusion in the threading operation and improving the production efficiency of the bracket.

[0065] It should be noted that the cross-sectional shape and size of the mandrel are compatible with the cross-sectional shape and size of the stent cutting portion. In this embodiment, the cross-sectional shape of the mandrel can be circular to match the cross-sectional shape of the stent cutting portion. In other examples, the cross-sectional shape of the mandrel can also be elliptical or polygonal.

[0066] In this embodiment, the distribution plate 2 may have a first connection hole n1, and the core rod 1 passes through the first connection hole n1 and is coaxially arranged with the distribution plate 2, which is beneficial to improving the stability of the braiding tooling.

[0067] As an example, the outer diameter of the core rod 1 is the same as the inner diameter of the first connecting hole n1 , so that the core rod 1 passing through the first connecting hole n1 can be automatically coaxially aligned with the distribution plate 2 .

[0068] In this embodiment, the distribution disk 2 includes a disk body 21, and the disk body 21 has a first disk surface 21a facing the cutting section; a second disk surface 21b opposite to the first disk surface 21a; and a disk body side surface 21c located between the first disk surface 21a and the second disk surface 21b; the multiple wire threading grooves m are opened at the edge of the first disk surface 21a and pass through the disk body side surface 21c.

[0069] Specifically, the edge of the first disk surface 21a has the largest distance from the core rod 1, and the circumferential length of the edge of the first disk surface 21a is the largest. A plurality of threading grooves m are opened at the edge of the first disk surface 21a, which can increase the spacing between adjacent threading grooves m, thereby reducing the probability of confusion when the braiding wire is passed through the corresponding threading grooves; and can increase the spacing between the braiding wires in adjacent threading grooves m, thereby reducing the probability of confusion when the spindle is connected to the corresponding braiding wire.

[0070] In this embodiment, the knitting tool may further include: a blocking piece (not shown in the figure) that is interference-fitted with the threading groove m.

[0071] Specifically, the blocking piece that is interference-fitted with the threading groove m can fix the braided wire in the threading groove m, thereby reducing the probability of the braided wire escaping from the threading groove m before being connected to the spindle.

[0072] As an example, the blocking member may be a rubber plug, which can reduce the damage to the wire threading groove m caused by the interference fit process.

[0073] In this embodiment, the arc of the projection of the threading groove m on a projection plane perpendicular to the axis of the threading groove m is greater than 180 degrees and less than 360 degrees.

[0074] Specifically, the arc of the projection of the wire threading groove m on the plane perpendicular to the axis of the wire threading groove m is greater than 180 degrees, which can make the blocking piece and the wire threading groove interference fit, thereby fixing the braided wire in the wire threading groove m; the arc of the projection of the wire threading groove m on the plane perpendicular to the axis of the wire threading groove m is less than 360 degrees, so that after the blocking piece in the wire threading groove m is removed, the braided wire can fall off the wire threading groove m along the radial direction of the distribution disk 2.

[0075] In this embodiment, the intersection of the threading groove m, the first disk surface 21a and the disk body side surface 21c is chamfered, which is beneficial to reduce the damage of the threading groove m to the braided wire.

[0076] In this embodiment, a plurality of radially extending indicator lines 21 d are provided on the first disk surface 21 a of the disk body 21 , wherein one indicator line 21 d corresponds to one threading groove m.

[0077] Specifically, one end of the indicator line 21d points to the first connecting hole n1, and the other end extends along the radial direction of the distribution disk 2 to point to the threading groove m. The indicator line 21d can provide the position information of the corresponding threading groove m during the process of the braided wire passing through the threading groove m, thereby reducing the time for confirming the corresponding threading groove m and improving the pre-connection efficiency of the braided wire.

[0078] As an example, the indicator line 21d can be a linear protrusion. In other examples, the indicator line can also be one or more of a linear depression or a linear plane pattern.

[0079] It should be noted that the positions of the multiple threading grooves distributed along the circumference of the first disk surface correspond to the positions of the multiple braiding wires on the cutting segment distributed along the circumference of the core rod, which is conducive to the braiding wires continuing to pass through the corresponding threading grooves after passing through the cutting segment.

[0080] As an example, the angles between adjacent indicator lines 21d are equal, the spacings between the plurality of threading grooves m and the first connection hole n1 are equal, and the plurality of threading grooves m are evenly distributed along the edge of the first disk surface.

[0081] In this embodiment, the distribution plate 2 may further include a first connecting portion 22, which is coaxially arranged on the second surface 21b, the first connecting hole n1 passes through the first connecting portion 22, and the core rod 1 coaxially passes through the first connecting hole n1 and is fixedly connected to the first connecting portion 22.

[0082] Specifically, the first connecting portion 22 coaxially arranged on the second surface 21b can increase the length of the first connecting hole n1 in axial contact with the core rod 1, thereby increasing the coaxial stability between the distribution plate 2 and the core rod 1 and reducing the jitter of the braided wire when passing through the threading groove m.

[0083] In this embodiment, the outer diameter of the first connecting portion 22 gradually increases in a direction approaching the cutting section, thereby increasing the connection strength between the first connecting portion 22 and the disc body 21 .

[0084] In this embodiment, the first connecting portion 22 has a second connecting hole n2, which is connected to the first connecting hole n1; the distribution plate 2 may also include: a first connecting piece (not shown in the figure) threadedly engaged with the second connecting hole n2, and the distribution plate 2 fixes the core rod 1 by passing the first connecting piece through the second connecting hole n2.

[0085] Combined with reference Figures 2 to 6 ,in, Figure 5 FIG. 1 shows a schematic structural diagram of a sub-distribution tray in an embodiment of the present invention. Figure 6 Shown Figure 5 Schematic diagram of the right side.

[0086] In this embodiment, the branching plate 2 may be composed of two sub-branching plates 2a, and the two sub-branching plates 2a are detachably connected.

[0087] Specifically, after the core rod 1 in the weaving tool is fixed to the weaving machine and the weaving wire is connected to the spindle corresponding to the weaving machine, the wire distribution disk 2 needs to be removed to leave only the weaving core rod weaving bracket. The above setting enables the wire distribution disk 2 to be separated from the core rod 1 while the core rod 1 remains fixedly connected to the weaving machine.

[0088] In this embodiment, the sub-distribution disk 2a may include a sub-disk body 2a1, a first sub-connection part 2a2 and a second sub-connection part 2a3; the two sub-disk bodies 2a1 cooperate to constitute the disk body 21; the two first sub-connection parts 2a2 cooperate to constitute the first connection part 22; a third connection hole n3 is provided on the second sub-connection part 2a3; the distribution disk 2 also includes a second connecting piece (not shown in the figure) that is threadedly engaged with the third connection hole n3, and the two sub-distribution disks 2a are detachably connected by passing the second connecting piece through the adjacent third connection holes n3.

[0089] Specifically, when the core rod 1 is fixed to the braiding machine, the second connecting piece in the third connecting hole n3 is removed, so that the distribution tray 2 can be split into two sub-distribution trays 2a.

[0090] In this embodiment, the distribution tray 2 can be made by 3D printing of high molecular polymer.

[0091] Combined with reference Figures 2 to 8 ,in, Figure 7 FIG1 shows a schematic structural diagram of a core rod in an embodiment of the present invention. Figure 8 A schematic structural diagram of the head of a core rod in an embodiment of the present invention is shown.

[0092] In this embodiment, the core rod 1 is a tubular structure, which is beneficial to reducing manufacturing costs.

[0093] In this embodiment, along the axial direction of the core rod 1, the core rod 1 includes a head 11, a middle part 12 and a clamping part 13 in sequence, wherein the head 11 is used to support and fix the cutting segment, the middle part 12 is used to fix the distribution plate 2, and the clamping part 13 is used to connect with the braiding machine.

[0094] In this embodiment, the end of the head 11 away from the middle part 12 is set to be a truncated cone, which can make the outer diameter of the end face of the head 11 away from the middle part 12 smaller than the inner diameter of the cutting section, thereby reducing the difficulty of fitting the cutting section on the head 11.

[0095] In this embodiment, the cutting section includes multiple cutting rods, and the side of the head 11 may include multiple protrusions 11a. The size and distribution of the multiple protrusions 11a correspond to the size and distribution of the hollow areas formed between the multiple cutting rods, and the cutting rods are embedded in the gaps between adjacent protrusions 11a.

[0096] Specifically, the size and distribution of the multiple protrusions 11a correspond to the size and distribution of the hollow area formed between the multiple cutting rods. The cutting rods are embedded in the gaps between adjacent protrusions 11a. The multiple protrusions 11a can fix the cutting segment, reduce the probability of relative displacement of the cutting segment relative to the core rod 1, and reduce the deformation generated during the fixing process of the cutting segment.

[0097] In this embodiment, the outer diameter of the head 11 is adapted to the inner diameter of the cutting section.

[0098] It should be noted that the reference Figure 1 The bracket has a connecting ring C connected to the cutting segment A. When the cutting segment A is fixed to the head, the connecting ring C is located between the cutting segment A and the core rod. The overlap of the connecting ring C and the cutting segment A will cause the cutting segment A at this position to protrude, thereby causing the cutting segment A to deform.

[0099] In this embodiment, a first receiving groove 11 b is defined on the side surface of the head 11 .

[0100] Specifically, when the cutting segment is fixed to the head 11, the connecting ring is located in the first accommodating groove 11b. The first accommodating groove 11b serves as a retreat space, which can reduce the protrusion of the cutting segment at this position caused by the overlap between the connecting ring and the cutting segment, thereby reducing the deformation of the cutting segment during the fixing process.

[0101] It should be noted that the braided wire is passed through the cutting segment. When the cutting segment is fixed to the head, part of the braided wire is located between the cutting segment and the core rod. The overlap of the braided wire and the cutting segment will cause the cutting segment at this position to bulge, thereby causing the cutting segment to deform.

[0102] In this embodiment, a second receiving groove 11 c is defined on the side surface of the head 11 .

[0103] Specifically, when the cutting segment is fixed to the head, the braiding wire between the cutting segment and the core rod is located in the second accommodating groove 11c. The second accommodating groove 11c serves as a retreat space, which can reduce the protrusion of the cutting segment at this position caused by the overlap of the braiding wire and the cutting segment, thereby reducing the deformation of the cutting segment during the fixing process; at the same time, the second accommodating groove 11c serves as a retreat space, which can reduce the difficulty of passing the braiding wire through the cutting part.

[0104] In this embodiment, the second accommodating groove 11 c is an annular groove extending along the circumference of the side surface of the head 11 to match the position of the braided wire on the cutting section.

[0105] In this embodiment, a plurality of adjustment holes 11 d are formed on the side surface of the head 11 , and the plurality of adjustment holes 11 d are distributed in an array along the circumference of the head.

[0106] Specifically, when the cutting segment is fixed to the head 11, one end of the adjusting member is inserted into the adjusting hole 11d near the cutting rod of the cutting segment. By squeezing the cutting rod of the cutting segment, the adjusting member can fine-tune the shape of the cutting rod, so that the actual shape of the cutting segment is more in line with the expected shape, thereby improving the quality of the cutting segment.

[0107] In this embodiment, the middle part 12 is provided with a fourth connecting hole n4, and the core rod 1 is moved along the first connecting hole n1. When the fourth connecting hole n4 is coaxial with the second connecting hole n2 of the second connecting part 22, the first connecting member is sequentially passed through the second connecting hole n2 and the fourth connecting hole n4 to fix the core rod 1.

[0108] In this embodiment, there are multiple fourth connecting holes n4, and the multiple fourth connecting holes n4 are distributed in sequence on the middle part 12 along the axial direction of the core rod 1. By adjusting the fourth connecting hole n4 that cooperates with the second connecting hole n2, the relative distance between the distribution plate 2 and the head 11 can be adjusted.

[0109] As an example, the first connecting member may be threadedly engaged with the second connecting hole n2 and the fourth connecting hole n4, thereby increasing the fixing strength between the distribution plate 2 and the core rod 1.

[0110] In this embodiment, the outer diameter of the middle portion 12 is adapted to the inner diameter of the first connecting hole n1 .

[0111] In this embodiment, the middle portion 12 can be detachably connected to the head portion 11 and the clamping portion 13, respectively, which facilitates replacement and maintenance of the middle portion 12, the head portion 11, and the clamping portion 13, as well as the free combination of different models of middle portions 12, heads 11, and clamping portions 13. In other examples, the middle portion can also be integrally formed with the head portion and the clamping portion.

[0112] In this embodiment, the core rod 1 can be made of stainless steel or titanium alloy by 3D printing.

[0113] Correspondingly, an embodiment of the present invention further provides a weaving system, which is used to weave a weaving segment of a stent.

[0114] In this embodiment, the weaving system includes: a weaving machine and a weaving tool, wherein the weaving machine includes a plurality of spindles; the weaving tool includes the weaving tool described in any of the aforementioned embodiments, and the weaving tool is detachably connected to the weaving machine.

[0115] In the weaving system provided by an embodiment of the present invention, the weaving wire can be placed in the corresponding threading groove before being connected to the corresponding spindle, so that the threading operation between the weaving wire and the cutting section and the pre-connection with the corresponding spindle can be realized before the weaving tooling is assembled to the weaving machine, so that the operator does not need to stand in front of the weaving machine to perform the threading operation, thereby reducing the chance of confusion in the threading operation and improving the production efficiency of the bracket.

[0116] In this embodiment, the braiding machine has a mounting hole, and the mandrel is inserted into the mounting hole to be detachably connected to the braiding machine.

[0117] Accordingly, an embodiment of the present invention further provides a weaving method. Figure 9 It is a flow chart of the steps of one embodiment of the knitting method of the present invention.

[0118] In this embodiment, the weaving method may include the following basic steps:

[0119] Step S1, providing a knitting machine and knitting tools;

[0120] Step S2, fixing the cut segment of the thrombectomy stent to the core rod of the braiding tool;

[0121] Step S3, fixing the wire distribution plate of the braiding tool to the mandrel;

[0122] Step S4, threading the braided wire into the corresponding threading grooves in the cutting section and the distribution plate;

[0123] Step S5, fixing the mandrel on the braiding machine;

[0124] Step S6, connecting the braiding wire in the threading groove to the corresponding spindle in the braiding machine;

[0125] Step S7, removing the distribution plate from the mandrel;

[0126] Step S8: start the braiding machine to perform braiding.

[0127] By adopting the above technical solution, the braiding wire can be placed in the corresponding threading groove before being connected to the corresponding spindle, so that the threading operation between the braiding wire and the cutting section and the pre-connection with the corresponding spindle can be realized before the braiding tooling is assembled to the braiding machine, so that the operator does not need to stand in front of the braiding machine to perform the threading operation, thereby reducing the chance of confusion in the threading operation and improving the production efficiency of the bracket.

[0128] To enable those skilled in the art to better understand and implement the embodiments of the present invention, the concepts, schemes, principles and advantages of the embodiments of the present invention are described in detail below with reference to the accompanying drawings and through specific application examples.

[0129] Execute step S1: provide a knitting machine and a knitting tool provided by any of the above embodiments.

[0130] Specifically, for a detailed description of the knitting machine and the knitting tool, please refer to the aforementioned description of the knitting machine and the knitting tool, which will not be repeated here.

[0131] Execute step S2: fix the cut segment of the thrombectomy stent to the core rod of the braiding tool.

[0132] Specifically, the heat-treated cutting segment is inserted into the head of the core rod, and then the position of the cutting segment is adjusted so that the cutting rod of the cutting segment is embedded in the gap between the adjacent protrusions on the side wall of the head. The connecting ring of the cutting segment is located in the first receiving groove, and the position of the braiding wire on the cutting segment is located in the second receiving groove. Then, the cutting part is wrapped with a linear structure to further fix the cutting segment on the core rod, thereby reducing the chance of the cutting segment being displaced, deformed or even broken due to force during the braiding process.

[0133] Execute step S3: fix the wire distribution plate of the braiding tool to the core rod.

[0134] Specifically, align the two sub-distribution disks, and use the second connecting piece to threadably engage with the fourth connecting holes on the two sub-distribution disks to form a distribution disk. Then, pass the core rod through the first connecting hole of the distribution disk, adjust the position and angle of the core rod, align the third connecting hole on the core rod with the second connecting hole on the distribution disk, and fix the distribution disk to the core rod by threadably engaging with the second connecting hole and the third connecting hole respectively.

[0135] Executing step S4: inserting the braided wire into the corresponding wire threading grooves in the cutting section and the wire distribution tray.

[0136] Specifically, the braided wire is cut into a fixed length and then inserted into the hollow area formed by each cutting rod on the cutting section. The midpoint of the braided wire is located in the hollow area. Then, the two ends of the braided wire pass through the two wire threading grooves at specific positions according to a certain rule. Then, a blocking piece is inserted into the wire threading groove to fix the braided wire with an interference fit to complete the pre-threading. The wire threading grooves in the distribution disk can improve the distinction between the braided wires.

[0137] Execute step S5: fix the core rod on the braiding machine.

[0138] Specifically, the pre-threaded braiding tool is transferred to the braiding machine, and the clamping section of the core rod is inserted into the mounting hole of the braiding machine and fixed.

[0139] Execute step S6 to connect the braiding wire in the threading groove to the corresponding spindle in the braiding machine.

[0140] Specifically, align the threading grooves on the distribution disk with the corresponding spindles on the braiding machine, and then connect each braiding wire head to the corresponding spindle.

[0141] Execute step S7 to remove the distribution plate from the core rod.

[0142] Specifically, the blocking piece in the threading groove is removed, and then the first connecting piece in the second connecting hole and the second connecting piece in the fourth connecting hole are removed to split the distribution tray into two sub-distribution trays, thereby removing the distribution tray from the core rod.

[0143] Execute step S8 to start the braiding machine to perform braiding.

[0144] Specifically, after adjusting the braiding parameters and the braiding machine program, the braiding machine is started to perform braiding to form the braided segments of the stent.

[0145] It can be understood that the above describes multiple embodiment schemes provided by the embodiments of the present invention. The optional implementation methods and specific examples introduced in each embodiment scheme can be combined and cross-referenced with each other without conflict, thereby extending a variety of possible embodiment schemes, which can all be considered as embodiment schemes disclosed and open to the public by the present invention.

[0146] It should be noted that the “examples” or “embodiments” referred to in this specification refer to specific features, structures or characteristics that may be included in at least one implementation method of an embodiment of the present invention. In the description of this specification, the terms “first”, “second”, “third”, “fourth”, etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined by terms such as “first”, “second”, “third”, “fourth”, etc. may explicitly or implicitly include one or more of the features. Moreover, the terms such as “first”, “second”, “third”, “fourth”, etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or to express importance. It is understood that the terms used in this way can be interchangeable where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0147] Although the embodiments of the present invention are disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A knitted work garment, characterized in that: include: a mandrel for fixing the cut segment of the thrombectomy stent; A wire distribution plate fixed to the mandrel, the wire distribution plate having a plurality of wire threading slots and a first connecting hole coaxially arranged, wherein one wire threading slot corresponds to one spindle of a braiding machine, and the braiding machine has a plurality of spindles; the mandrel is coaxially passed through the first connecting hole and is fixedly connected to the wire distribution plate; The distribution board includes: A disc body, the disc body comprising: a first disc surface facing the cutting section, a second disc surface opposite the first disc surface, and a disc body side surface located between the first disc surface and the second disc surface; the plurality of threading grooves are formed at the edge of the first disc surface and pass through the disc body side surface; wherein the two sub-disc body portions cooperate to form the disc body; a first connecting portion, wherein the first connecting portion is coaxially disposed on the second disk surface, the first connecting hole passes through the first connecting portion, and the mandrel coaxially passes through the first connecting hole and is fixedly connected to the first connecting portion; wherein two first sub-connecting portions cooperate to form the first connecting portion; a second sub-connecting portion, wherein a third connecting hole is formed on the second sub-connecting portion; The second connecting member is threadedly engaged with the third connecting hole, and the second connecting member passes through the third connecting holes corresponding to the two sub-distribution disks so that the two sub-distribution disks can be detachably connected; wherein the sub-distribution disk body, the first sub-connecting part and the second sub-connecting part constitute the sub-distribution disk.

2. The knitting tool according to claim 1, characterized in that: The first disk surface is provided with a plurality of indicator lines extending in the radial direction, wherein one indicator line corresponds to one threading groove.

3. The knitting tool according to claim 1, characterized in that: The first connecting portion has a second connecting hole, and the second connecting hole is connected to the first connecting hole; The distribution board also includes: The first connecting member is threadedly engaged with the second connecting hole, and the first connecting member passes through the second connecting hole to fix the core rod.

4. The knitting tool according to claim 1, characterized in that: Also includes: A blocking piece that is interference-fitted with the wire threading groove.

5. The knitting tool according to claim 1, characterized in that: The arc projected by the threading groove on a projection plane perpendicular to the axis of the threading groove is greater than 180 degrees and less than 360 degrees.

6. The knitting tool according to claim 1, characterized in that: The core rod comprises: a head portion, a middle portion and a clamping portion which are sequentially arranged along the axial direction of the core rod; The head portion is used to fix the cutting segment, the middle portion is used to fix the line distribution plate, and the clamping portion is connected to the braiding machine.

7. A braiding system, characterized in that: include: a braiding machine having a plurality of spindles; The knitting tool according to any one of claims 1 to 6, wherein the knitting tool is detachably connected to the knitting machine.

8. A weaving method, characterized in that: include: Providing a knitting machine and a knitting tool according to any one of claims 1 to 6; Fixing the cut section of the thrombectomy stent to the core rod of the braided tool; Fixing the distribution plate of the braiding tool to the mandrel; The braided wire is passed through the corresponding wire grooves in the cutting section and the wire distribution plate; fixing the mandrel on the braiding machine; connecting the braiding wire in the threading groove to the corresponding spindle in the braiding machine; removing the distribution plate from the mandrel; The braiding machine is started to perform braiding.

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