Support weaving tool

Abstract

The utility model discloses a support weaving tool which comprises a tool body and a positioning bolt, the tool body is cylindrical, a plurality of protruding structures and a plurality of groove structures are arranged on the side face of the tool body, and the protruding structures and the groove structures are arranged alternately. A plurality of positioning bolts are arranged on each convex structure, so that the winding direction of a wire rod is changed when the wire rod winds around the positioning bolts, and the cross point of the wire rod is positioned on the cross section of one groove structure. Due to the fact that the locating bolts are arranged on the protruding structures, the winding direction of the wires is changed, the cross points of the wires are located on the cross section of one groove structure, the wires can penetrate through the groove structures conveniently, the cross points are formed, and the weaving efficiency is improved. Meanwhile, the formed intersection point is located on the cross section of the groove structure and is not tightly attached to the surface of the tool body, so that the wire rod can be prevented from bearing large stress at the intersection point, the risk of wire rod breakage is reduced, and the structural integrity and function of the support are prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the field of interventional medical equipment, in particular to a bracket weaving tooling. Background Art

[0002] In the field of modern medicine, metal stents are increasingly used. They are used in a variety of medical procedures to maintain or restore the openness of tubular structures in the body. These stents include but are not limited to cardiovascular stents, respiratory stents, etc., which are essential for treating narrowed or blocked blood vessels and airways. Traditional metal stents mostly use a multi-filament braided structure, which is a mesh structure formed by interweaving multiple metal wires to provide the necessary support and flexibility.

[0003] However, the existing monofilament braiding technology has some shortcomings. First, since the monofilament wire is close to the surface of the fixture during the braiding process, it is not only difficult for the wire to pass smoothly at the intersection, thus affecting the braiding efficiency, but also causes the wire to be subjected to greater stress at the intersection, which increases the risk of wire breakage and further affects the structural integrity and function of the stent. Utility Model Content

[0004] The embodiment of the utility model provides a bracket weaving tool to solve the problem that the wires are difficult to pass smoothly through the intersection and are subjected to greater stress at the intersection after passing through, so as to achieve the effect of improving the weaving efficiency and reducing the risk of breakage.

[0005] Specifically, the utility model provides a bracket weaving tool, including a tool body and a positioning bolt, the tool body is cylindrical, so that wires can be wound around the side of the tool body; the side of the tool body is provided with a plurality of protrusion structures and a plurality of groove structures, and the protrusion structures and the groove structures are alternately arranged; each of the protrusion structures is provided with a plurality of positioning bolts, so that the winding direction of the wires can be changed when winding around the positioning bolt, and the intersection point of the wires can be located on the cross section of one of the groove structures.

[0006] Optionally, the width of the groove structure is not less than the diameter of the wire.

[0007] Optionally, a plurality of the positioning bolts are arranged in an array on the outer surface of the tooling body.

[0008] Optionally, the protrusion structure and the groove structure are alternately arranged along the axial direction of the tooling body.

[0009] Optionally, the protrusion structure and the groove structure are alternately arranged along the circumference of the tooling body.

[0010] Optionally, the positioning bolts on the plurality of protruding structures are arranged at intervals along the axial direction or circumferential direction of the tooling body.

[0011] Optionally, the positioning bolt is detachably arranged on the protruding structure.

[0012] Optionally, a plurality of positioning holes are provided on the tool body, and each positioning bolt is inserted into one of the positioning holes.

[0013] Optionally, the tool body includes a core shaft and a sleeve, and the sleeve is rotatably sleeved on the core shaft; the protrusion structure and the groove structure are arranged on the outer circumferential surface of the sleeve.

[0014] Optionally, the positioning hole includes a through hole portion and a blind hole portion, the through hole portion is arranged on the peripheral wall of the sleeve, the blind hole portion is arranged on the core shaft, and one through hole portion is connected to one blind hole portion to form one positioning hole.

[0015] Optionally, one end of the core shaft is provided with an external thread, and the sleeve is provided with an internal thread, and the internal thread is meshed with the external thread.

[0016] The beneficial effects of the utility model are:

[0017] In the stent braiding tool provided by the utility model, a plurality of convex structures and groove structures are arranged alternately on the side of the tool body, and a positioning bolt is arranged on the convex structure, so as to change the winding direction of the wire, so that the intersection of the wire is located on the cross section of one of the groove structures, so that it is convenient for the wire to pass through the groove structure and form an intersection, thereby improving the braiding efficiency. At the same time, the formed intersection is located on the cross section of the groove structure and is not in close contact with the surface of the tool body, so that the wire can be prevented from being subjected to greater stress at the intersection, reducing the risk of wire breakage and avoiding affecting the structural integrity and function of the stent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic structural diagram of a bracket weaving tool in one embodiment of the utility model;

[0020] Figure 2 It is a schematic structural diagram of a bracket weaving tool in one embodiment of the utility model;

[0021] Figure 3It is a schematic longitudinal cross-sectional view of a stent weaving tool in one embodiment of the utility model.

[0022] In the figure: 100, tool body, 101, protrusion structure, 102, groove structure, 103, positioning hole, 110, core shaft, 111, external thread, 120, sleeve, 121, internal thread, 200, positioning bolt. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Figure 1 Schematic diagram of the structure of the support braiding tool in one embodiment of the utility model, such as Figure 1 As shown, and refer to Figures 2 to 3The embodiment of the utility model provides a stent weaving tool, including a tool body 100 and a positioning bolt 200, wherein the tool body 100 is cylindrical so that a wire can be wound around the side of the tool body 100; a plurality of protrusion structures 101 and a plurality of groove structures 102 are arranged on the side of the tool body 100, and the protrusion structures 101 and the groove structures 102 are arranged alternately; a plurality of positioning bolts 200 are arranged on each of the protrusion structures 101, so that the wire can change its winding direction when winding around the positioning bolt 200, and the intersection of the wire can be located on the cross section of one of the groove structures 102.

[0027] In the embodiment of the utility model, a plurality of protrusion structures 101 and groove structures 102 are arranged alternately on the side of the tool body 100, and a positioning bolt 200 is arranged on the protrusion structure 101, thereby changing the winding direction of the wire, so that the intersection of the wire is located on the cross section of one of the groove structures 102, so that it is convenient for the wire to pass through the groove structure 102 and form an intersection, thereby improving the weaving efficiency. At the same time, the formed intersection is located on the cross section of the groove structure 102, and is not in close contact with the surface of the tool body 100, so that the wire can be prevented from being subjected to greater stress at the intersection, reducing the risk of wire breakage, and avoiding affecting the structural integrity and function of the stent.

[0028] Specifically, the width of the groove structure 102 is not less than the diameter of the wire, so that the intersection point formed by the wire can completely not contact the surface of the tool body 100, thereby achieving the effect of reducing the stress of the wire at the intersection point.

[0029] like Figure 2 As shown, in one embodiment of the present invention, a plurality of positioning bolts 200 are arranged in an array on the outer surface of the tool body 100. That is, the positioning bolts 200 are arranged in rows along the circumference of the tool body 100 and in columns along the axial direction of the tool body 100; the number of positioning bolts 200 in each row is the same, and the number of positioning bolts 200 in each column is the same.

[0030] In an embodiment of the present invention, the positioning bolts 200 on the plurality of protruding structures 101 are arranged at intervals along the axial direction or the circumferential direction of the tool body 100 .

[0031] In an embodiment of the present invention, the protrusion structures 101 and the groove structures 102 are alternately arranged along the axial direction of the tool body 100 , and each protrusion structure 101 and each groove structure 102 are annular.

[0032] In an alternative embodiment of the present invention, the protrusion structures 101 and the groove structures 102 are alternately arranged along the circumference of the tool body 100 , and each protrusion structure 101 and each groove structure 102 are in a strip shape.

[0033] In one embodiment of the utility model, the positioning bolt 200 is detachably arranged on the protruding structure 101. In this way, after the wire is woven into the medical metal stent, the positioning bolt 200 is removed from the protruding structure 101, the medical metal stent can be removed, and then the positioning bolt 200 is installed on the protruding structure 101, and it can be woven again. At the same time, by installing and removing the positioning bolt 200, the spacing between two adjacent positioning bolts 200 can be changed to achieve the effect of changing the density of the medical metal stent grid; and the number of positioning bolts 200 in the axial direction of the tooling body 100 can be changed to achieve the effect of changing the length of the medical metal stent.

[0034] Specifically, Figure 3 As shown, the tool body 100 is provided with a plurality of positioning holes 103 , and each positioning bolt 200 is inserted into one of the positioning holes 103 , so as to facilitate quick disassembly.

[0035] In one embodiment of the utility model, the tool body 100 includes a core shaft 110 and a sleeve 120, and the sleeve 120 is rotatably sleeved on the core shaft 110; the protrusion structure 101 and the groove structure 102 are arranged on the outer peripheral surface of the sleeve 120. Further, the positioning hole 103 includes a through hole portion and a blind hole portion, the through hole portion is arranged on the peripheral wall of the sleeve 120, and the blind hole portion is arranged on the core shaft 110, and one through hole portion is connected with one blind hole portion to form one positioning hole 103.

[0036] In the embodiment of the utility model, after the positioning bolt 200 is inserted into the positioning hole 103 until the end of the positioning bolt 200 enters the blind hole, the mandrel 110 and the sleeve 120 are rotated to make the axis of the through hole part deviate from the axis of the blind hole part, reduce the connection area between the through hole part and the blind hole part, and lock the positioning bolt 200. After the wire is woven into a medical metal stent, the mandrel 110 and the sleeve 120 are rotated to make the axis of the through hole part coincide with the axis of the blind hole part, the through hole part and the blind hole part are fully connected, and the connection area between the through hole part and the blind hole part reaches the maximum value, so that the positioning bolt 200 can be quickly removed.

[0037] In one embodiment of the utility model, an external thread 111 is provided at one end of the core shaft 110, and an internal thread 121 is provided on the sleeve 120. The internal thread 121 is engaged with the external thread 111 so that the connection area between the through hole part and the blind hole part can be controlled by rotating the sleeve 120 to realize the installation and disassembly of the positioning bolt 200.

[0038] When used, any positioning bolt 200 at one end of the tooling body 100 is used as the first starting point of the first row and the first column. The wire moves from the first starting point along the circumference and axial direction of the tooling body 100 to the positioning bolt 200 in the second row and the second column, and spirally winds with the positioning bolt 200 as the fulcrum until it extends to the other end of the braided tooling and is located in the same column as the first starting point on the first row and the nth column positioning bolt 200, forming a first spiral cylindrical structure. Then, the first row and the nth column positioning bolt 200 is used as the second starting point, and spirally winds in the opposite direction until it extends to the first row and the second column positioning bolt 200 at the same end of the braided tooling as the first starting point, forming a second cylindrical mesh structure. The first spiral cylindrical structure intersects with the second cylindrical mesh structure trajectory, forming a metal bracket with a smaller mesh density. The first row and the second column positioning bolt 200 is used as the third starting point, and the above steps are repeated until multiple spiral cylindrical structures are formed to increase the mesh density of the metal bracket. During the winding process, if the wires need to cross, the wires are passed through the groove structure 102 so that the wires cross with the wound wires to form a cross point.

[0039] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A bracket weaving tool, characterized in that: It includes a tool body and a positioning bolt, the tool body is cylindrical so that the wire can be wound around the side of the tool body; the side of the tool body is provided with a plurality of protrusion structures and a plurality of groove structures, and the protrusion structures and the groove structures are alternately arranged; each of the protrusion structures is provided with a plurality of positioning bolts so that the winding direction of the wire can be changed when it is wound around the positioning bolt, and the intersection of the wire can be located on the cross section of one of the groove structures.

2. The stent braiding tooling according to claim 1, characterized in that: The width of the groove structure is not less than the diameter of the wire.

3. The stent braiding tool according to claim 1, characterized in that: A plurality of positioning pins are arranged in an array on the outer surface of the tooling body.

4. The stent braiding tooling according to claim 1, characterized in that: The protrusion structure and the groove structure are alternately arranged along the axial direction of the tool body; or, the protrusion structure and the groove structure are alternately arranged along the circumferential direction of the tool body.

5. The stent braiding tool according to claim 1, characterized in that: The positioning bolts on the plurality of protruding structures are arranged at intervals along the axial direction or the circumferential direction of the tooling body.

6. The stent braiding tool according to claim 1, characterized in that: The positioning bolt is detachably arranged on the protruding structure.

7. The stent braiding tool according to claim 1, characterized in that: The tool body is provided with a plurality of positioning holes, and each positioning bolt is inserted into one of the positioning holes.

8. The stent braiding tool according to claim 7, characterized in that: The tooling body comprises a core shaft and a sleeve, wherein the sleeve is rotatably sleeved on the core shaft; and the protrusion structure and the groove structure are arranged on the outer peripheral surface of the sleeve.

9. The stent braiding tooling according to claim 8, characterized in that: The positioning hole includes a through hole portion and a blind hole portion, the through hole portion is arranged on the peripheral wall of the sleeve, the blind hole portion is arranged on the core shaft, and one through hole portion is connected with one blind hole portion to form one positioning hole.

10. The stent braiding tooling according to claim 8, characterized in that: One end of the core shaft is provided with an external thread, and the shaft sleeve is provided with an internal thread, and the internal thread is meshed with the external thread.

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