A kind of intracranial stent winding tool

Abstract

This invention provides an intracranial stent winding fixture, comprising a mandrel body, a wire-clamping structure, a fixing assembly, and at least two sets of pin assemblies. The wire-clamping structure includes a plurality of first wire-clamping grooves and a plurality of second wire-clamping grooves formed on the mandrel body. The plurality of first wire-clamping grooves are disposed on the surface of the mandrel body along a first helical direction, with a gap between adjacent first wire-clamping grooves. The plurality of second wire-clamping grooves are disposed on the surface of the mandrel body along a second helical direction, with a gap between adjacent second wire-clamping grooves. The first and second helical directions are staggered. A second wire-clamping groove is located within the gap between two adjacent first wire-clamping grooves, and a first wire-clamping groove is located within the gap between two adjacent second wire-clamping grooves. A gap is provided between the first and second wire-clamping grooves.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an intracranial stent winding tooling. Background Art

[0002] With the continuous development of angiography and intravascular embolization technology, intravascular interventional embolization has become the main means of clinical treatment of intracranial aneurysms, but the requirements for embolization methods and surgical operations are also constantly increasing. Especially for the embolization treatment of wide-necked aneurysms, embolization devices often fall off and escape, and intracranial stents are needed to assist the embolization material to ensure that the embolization device is stable in the aneurysm.

[0003] The intracranial stent weaving device in the prior art includes a core shaft body and a fixing part, which is fixedly connected to the core shaft body. A nut is provided on the top of the core shaft body for fixing one end of a monofilament. A plurality of mounting holes are arranged at equal intervals on the top and bottom of the core shaft body along the circumferential direction. A fixing part is fixed by a thread in any mounting hole, and the monofilament is wound around the fixing part to form the head and tail ends of the braided stent, thereby realizing the weaving of the intracranial stent on the surface of the core shaft body.

[0004] However, in the above intracranial stent weaving device, since the monofilaments need to be interlaced and woven on the surface of the core shaft body to form a mesh structure, each time the monofilaments are woven at the intersection, the monofilaments need to be manually overlapped and woven, which is time-consuming and labor-intensive and affects the weaving efficiency. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention lies in the intracranial stent weaving device in the prior art. Since the monofilaments need to be interlaced and woven on the surface of the core shaft body to form a mesh structure when weaving, each time the monofilaments are woven at the intersection, the monofilaments need to be manually overlapped and woven, which is time-consuming and labor-intensive and affects the weaving efficiency.

[0006] To this end, the present invention provides an intracranial stent winding tooling, comprising:

[0007] Mandrel body;

[0008] The wire-holding structure comprises a plurality of first wire-holding grooves and a plurality of second wire-holding grooves formed on the core shaft body, wherein the first wire-holding grooves and the second wire-holding grooves are suitable for passing the braided wires;

[0009] A fixing assembly, disposed on the mandrel body and suitable for fixing the braided wire;

[0010] At least two groups of latch assemblies, the two groups of latch assemblies are respectively arranged at two ends of the wire clamping structure, and the latch assemblies are used to limit the braided wire;

[0011] Among them, a number of the first wire clamping grooves are arranged on the surface of the mandrel body along the first spiral direction, and a gap is provided between adjacent first wire clamping grooves; a number of the second wire clamping grooves are arranged on the surface of the mandrel body along the second spiral direction, and a gap is provided between adjacent second wire clamping grooves; the first spiral direction and the second spiral direction are alternately arranged; the second wire clamping groove is arranged in the gap between two adjacent first wire clamping grooves; and the first wire clamping groove is arranged in the gap between two adjacent second wire clamping grooves; and a gap is provided between the first wire clamping groove and the second wire clamping groove.

[0012] Optionally, a gap is provided between the first wire clamping groove and the second wire clamping grooves on both sides thereof, and / or

[0013] A gap is provided between the first wire-holding groove and the second wire-holding groove on one side thereof.

[0014] Optionally,

[0015] Along the first spiral direction, the depth of the first wire-holding groove gradually decreases from the middle to both ends, and / or

[0016] Along the second spiral direction, the depth of the second wire-holding groove gradually decreases from the middle to both ends.

[0017] Optionally, it comprises a first latch assembly and a second latch assembly, wherein the first latch assembly and the second latch assembly are symmetrically arranged at two ends of the wire clamping structure.

[0018] Optionally, it comprises a first latch assembly and a second latch assembly, wherein the first latch assembly and the second latch assembly are rotationally symmetrically arranged at two ends of the wire clamping structure.

[0019] Optionally, any group of the latch assemblies includes:

[0020] at least one proximal latch member; and / or

[0021] at least one mid-side latch member; and / or

[0022] at least one distal latch member;

[0023] Wherein, along the axis direction of the core shaft body, the proximal latch member and / or the middle latch member and / or the distal latch member are arranged at intervals.

[0024] Optionally, any of the latch members includes a limiting portion to limit the braided wire.

[0025] Optionally, the plane where the proximal latch member and / or the middle latch member and / or the distal latch member are located is arranged perpendicular to the axis of the core shaft body.

[0026] Optionally, along the axial direction of the core shaft body, any one of the distal latch members is disposed between two adjacent middle latch members.

[0027] Optionally, the wire clamping structure further includes a developing wire groove, and the developing wire groove is spirally arranged on the core shaft body.

[0028] The intracranial stent winding tooling provided by the present invention has the following advantages:

[0029] 1. The present invention provides an intracranial stent winding tooling, comprising a mandrel body, a wire clamping structure, a fixing component and at least two groups of pin components, wherein the wire clamping structure comprises a plurality of first wire clamping grooves and a plurality of second wire clamping grooves formed on the mandrel body, wherein the first wire clamping grooves and the second wire clamping grooves are suitable for passing braided wires, the fixing component is arranged on the mandrel body and is suitable for fixing the braided wires, and two groups of the pin components are arranged at both ends of the wire clamping structure, and the pin components are used to limit the braided wires, wherein a plurality of the first wire clamping grooves are arranged on the surface of the mandrel body along a first spiral direction, and a gap is provided between adjacent first wire clamping grooves, a plurality of the second wire clamping grooves are arranged on the surface of the mandrel body along a second spiral direction, and a gap is provided between adjacent second wire clamping grooves, the first spiral direction and the second spiral direction are staggered, the second wire clamping groove is arranged in the gap between two adjacent first wire clamping grooves, and the first wire clamping groove is arranged in the gap between two adjacent second wire clamping grooves, and a gap is provided between the first wire clamping groove and the second wire clamping groove.

[0030] The intracranial stent winding tooling of this structure is provided with a first wire clamping groove and a second wire clamping groove, and the first wire clamping groove and the second wire clamping groove are suitable for placing braided wires, so that the braided wires can be braided in an interlaced manner on the surface of the mandrel body. By arranging the second wire clamping groove in the interval between adjacent first wire clamping grooves, when the braiding is arranged at the interlaced position of the braided wires on the surface of the mandrel body, the braided wires are first arranged along the first spiral direction, so that the braided wires are placed in the first wire clamping groove, and when the braiding in the second spiral direction is braided When weaving silk thread, since the second wire clamping groove is arranged in the interval between adjacent first wire clamping grooves, it is only necessary to pass the braided silk thread through the second wire clamping groove between adjacent first wire clamping grooves. Since the inner wall surface of the second wire clamping groove is lower than the surface of the core shaft body, it is convenient to thread the thread in the second wire clamping groove. Similarly, the first wire clamping groove is arranged in the interval between adjacent second wire clamping grooves, and the inner wall surface of the first wire clamping groove is lower than the surface of the core shaft body, so it is also convenient to thread the thread in the first wire clamping groove, thereby facilitating the weaving of the braided silk thread at the intersection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic structural view of an intracranial stent winding tooling provided in an embodiment of the present invention;

[0033] Figure 2 It is a schematic structural diagram of a first wire-holding groove, a second wire-holding groove and a developing wire groove in a winding tooling of an intracranial stent provided in an embodiment of the present invention;

[0034] Figure 3 It is a structural schematic diagram of a latch assembly in a winding tooling of an intracranial stent provided in an embodiment of the present invention;

[0035] Figure 4 A position relationship diagram of a latch assembly in a winding tooling for an intracranial stent provided in an embodiment of the present invention;

[0036] Description of reference numerals:

[0037] 1- mandrel body; 11- first clamping groove; 12- second clamping groove; 13- branch angle clamping groove; 14- developing groove;

[0038] 21-braiding silk thread; 22-developing silk thread;

[0039] 31-proximal latch member; 32-medial latch member; 33-distal latch member;

[0040] 4-Fix the components. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] Example

[0044] This embodiment provides an intracranial stent winding tooling, such as Figures 1 to 4 As shown, it includes a core shaft body 1, a pin assembly and a fixing assembly 4, wherein the core shaft body 1 is used to wind the braiding wire 21 and the developing wire 22, the pin assembly is connected to the core shaft body 1, and is used to fix the braiding wire 21 and the developing wire 22 during the braiding process, and the fixing assembly 4 is arranged at both ends of the core shaft body 1 to fix the ends of the braiding wire 21.

[0045] like Figures 1 to 3 As shown, the mandrel body 1 is cylindrical, and a wire-holding structure is arranged on the mandrel body 1. The wire-holding structure includes a plurality of first wire-holding grooves 11 and a plurality of second wire-holding grooves 12 formed on the mandrel body 1, and the plurality of first wire-holding grooves 11 are arranged on the surface of the mandrel body 1 along a first spiral direction, wherein the first spiral direction is Figure 2 In the a direction, there is a gap between adjacent first wire-gripping grooves 11; a plurality of second wire-gripping grooves 12 are arranged on the surface of the mandrel body 1 along the second spiral direction, wherein the first spiral direction is Figure 2 In the b direction, the second wire clamping groove 12 is arranged in the interval between adjacent first wire clamping grooves 11. Similarly, the first wire clamping groove 11 is also arranged in the interval between two adjacent second wire clamping grooves 12, that is, the first spiral direction and the second spiral direction are alternately arranged, and a gap is provided between the first wire clamping groove 11 and the second wire clamping grooves 12 on both sides thereof. In some other embodiments, a gap may also be provided between the first wire clamping groove 11 and the second wire clamping groove 12 on one side thereof.

[0046] like Figure 2 As shown, along the first spiral direction, the depth of the first wire-holding groove 11 gradually decreases from the middle to both ends, and along the second spiral direction, the depth of the second wire-holding groove 12 gradually decreases from the middle to both ends, so as to facilitate the braided wire 21 to penetrate into the first wire-holding groove 11 and the second wire-holding groove 12.

[0047] The present invention staggers the first wire-holding groove 11 and the second wire-holding groove 12, and the first wire-holding groove 11 and the second wire-holding groove 12 are suitable for placing the braided wire 21, so that the braided wire 21 can be staggered on the surface of the mandrel body 1. By arranging the second wire-holding groove 12 in the interval between the adjacent first wire-holding grooves 11, when the braiding wire 21 is staggered on the surface of the mandrel body 1, Figure 2 As shown, firstly, the braided wire 21 is arranged along the direction a so that the braided wire 21 is placed in the first wire clamping groove 11. When braiding the braided wire 21 in the direction b, since the second wire clamping groove 12 is arranged in the interval between adjacent first wire clamping grooves 11, it is only necessary to pass the braided wire 21 through the second wire clamping groove 12 between the adjacent first wire clamping grooves 11. Since the inner wall surface of the second wire clamping groove 12 is lower than the surface of the core shaft body 1, it is convenient to thread the wire in the second wire clamping groove 12. Similarly, the first wire clamping groove 11 is arranged in the interval between adjacent second wire clamping grooves 12, and the inner wall surface of the first wire clamping groove 11 is lower than the surface of the core shaft body 1, so it is also convenient to thread the wire in the first wire clamping groove 11, so it is convenient to weave the braided wire 21 at the intersection.

[0048] Among them, the present invention sets the number of the first wire clamping grooves 11 and the second wire clamping grooves 12 to be multiple, and there are intervals between adjacent first wire clamping grooves 11, and there are intervals between adjacent second wire clamping grooves 12. The present invention sets the first wire clamping grooves 11 and the second wire clamping grooves 12 not to intersect or overlap with each other. Compared with directly opening continuous grooves on the surface of the core shaft body 1, there will be intersections between the grooves. Therefore, in order to facilitate the weaving of monofilaments at the intersection, the depth of the grooves at the intersection of the grooves is greater than the depth of the grooves in other places. The present invention can avoid the above problems and facilitate processing and operation.

[0049] like Figure 1 As shown, the fixing assembly 4 includes bolts and gaskets, and the gaskets are fixed to the surface of the core shaft body 1 by bolts, so that the two ends of the braided wire 21 can be fixed on the bolts and gaskets.

[0050] like Figure 3 and Figure 4 As shown, the latch assembly includes a first latch assembly and a second latch assembly, and the first latch assembly and the second latch assembly are symmetrically arranged at both ends of the wire clamping structure. Preferably, the first latch assembly and the second latch assembly are rotationally symmetrically arranged at both ends of the wire clamping structure. The first latch assembly is arranged at the A end of the wire clamping structure, and the second latch assembly is arranged at the B end of the wire clamping structure. The first latch assembly and the second latch assembly have the same structure.

[0051] like Figure 4As shown, the first latch assembly includes eight proximal latch members 31, four middle latch members 32 and four distal latch members 33, wherein the eight proximal latch members 31, the four middle latch members 32 and the four distal latch members 33 are uniformly arranged on the A end surface of the mandrel body 1, wherein along the axis direction of the mandrel body 1, the four middle latch members 32 are aligned with the four proximal latch members 31 of the eight proximal latch members 31, any distal latch member 33 is arranged between two adjacent middle latch members 32, and the planes where the proximal latch members 31, the middle latch members 32 and the distal latch members 33 are located are arranged perpendicular to the axis of the mandrel body 1. It can be understood that the number of the proximal latch members 31, the middle latch members 32 and the distal latch members 33 can be determined according to actual production requirements.

[0052] Further, such as Figure 4 As shown, along the axis direction of the mandrel body 1, the proximal plug member 31, the middle plug member 32, and the distal plug member 33 are arranged at intervals, and eight proximal plug members 31 are arranged on the side close to the wire clamping structure, and four middle plug members 32 are arranged between the eight proximal plug members 31 and the four distal plug members 33. Among them, any plug member includes a limiting portion to limit the position of the braided wire 21.

[0053] Among them, Figure 4 As shown, the spindle body 1 is provided with a plurality of angle wire-locking grooves 13 around the latch assembly, which are used to limit the braided wire 21 on the latch assembly side.

[0054] like Figure 2 As shown, the wire clamping structure further includes a developing wire groove 14 , which is spirally arranged on the mandrel body 1 , and a developing wire 22 is passed through the developing wire groove 14 .

[0055] The intracranial stent winding tooling provided in this embodiment is as follows: Figure 1 As shown, when working, it includes the following steps:

[0056] Installation: First, fix the end of the braided wire 21 on the fixing assembly 4, and then rotate the intracranial stent winding tooling counterclockwise;

[0057] Process 1: Then, the braided wire 21 is wound around a distal pin 33 at the A end, and the intracranial stent winding tooling is rotated counterclockwise. The braided wire 21 is wound around the first clamping groove 11 to the bottom of the intracranial stent winding tooling and then wound around a middle pin 32 at the B end;

[0058] Return 1; then continue to rotate the intracranial stent winding tool counterclockwise, the braided wire 21 around the second clamping groove 12 reaches the top and bottom of the intracranial stent winding tool and then is wound around a middle side latch member 32 at the A end;

[0059] Process 2; then continue to rotate the intracranial stent winding tooling counterclockwise, the braided wire 21 around the first clamping groove 11 reaches the bottom of the intracranial stent winding tooling and is wound around a distal pin member 33 at the B end;

[0060] Return 2; then continue to rotate the intracranial stent winding tool counterclockwise, the braided wire 21 around the second clamping groove 12 reaches the top and bottom of the intracranial stent winding tool and then is wound around a distal pin member 33 at the A end;

[0061] Process 3: Then continue to rotate the intracranial stent winding tooling counterclockwise, the braided wire 21 goes around the first clamping groove 11 to reach the bottom of the intracranial stent winding tooling and then winds around a middle side latch member 32 at the B end;

[0062] Return 3; then continue to rotate the intracranial stent winding tool counterclockwise, the braided wire 21 around the second clamping groove 12 reaches the top and bottom of the intracranial stent winding tool and then is wound around a middle side latch member 32 at the A end;

[0063] Process 4; then continue to rotate the intracranial stent winding tooling counterclockwise, the braided wire 21 around the first clamping groove 11 reaches the bottom of the intracranial stent winding tooling and then is wound around a distal pin member 33 at the B end;

[0064] Return 4; then continue to rotate the intracranial stent winding tool counterclockwise, the braided wire 21 around the second clamping groove 12 reaches the top and bottom of the intracranial stent winding tool and then is wound around a distal pin member 33 at the A end;

[0065] Process 5; then continue to rotate the intracranial stent winding tooling counterclockwise, the braided wire 21 around the first clamping groove 11 reaches the bottom of the intracranial stent winding tooling and then is wound around a middle side latch member 32 at the B end;

[0066] Return 5; then continue to rotate the intracranial stent winding tool counterclockwise, the braided wire 21 around the second clamping groove 12 reaches the top and bottom of the intracranial stent winding tool and then is wound around a middle side pin member 32 at the A end;

[0067] Process 6; then continue to rotate the intracranial stent winding tooling counterclockwise, the braided wire 21 around the first clamping groove 11 reaches the bottom of the intracranial stent winding tooling and then is wound around a distal pin member 33 at the B end;

[0068] Return 6; Then continue to rotate the intracranial stent winding tool counterclockwise, and the braided wire 21 will go around the second clamping groove 12 to the bottom of the top of the intracranial stent winding tool and then be wound around a distal latch 33 at the end A. So far, through the limitation of the six middle latches 32 and the six distal latches 33, the intracranial stent is braided on the first clamping groove 11 and the second clamping groove 12.

[0069] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An intracranial stent winding tooling, characterized in that: include: Mandrel body (1); The wire-holding structure comprises a plurality of first wire-holding grooves (11) and a plurality of second wire-holding grooves (12) formed on a core shaft body (1), wherein the first wire-holding grooves (11) and the second wire-holding grooves (12) are suitable for passing braided wires (21); A fixing assembly (4), arranged on the core shaft body (1) and suitable for fixing the braided wire (21); At least two groups of latch assemblies, the two groups of latch assemblies being arranged at two ends of the wire clamping structure, the latch assemblies being used to limit the position of the braided wire (21); wherein a plurality of the first wire-holding grooves (11) are arranged on the surface of the mandrel body (1) along a first spiral direction, and a gap is provided between adjacent first wire-holding grooves (11); a plurality of the second wire-holding grooves (12) are arranged on the surface of the mandrel body (1) along a second spiral direction, and a gap is provided between adjacent second wire-holding grooves (12); the first spiral direction and the second spiral direction are arranged alternately; the second wire-holding groove (12) is arranged in the gap between two adjacent first wire-holding grooves (11); and the first wire-holding groove (11) is arranged in the gap between two adjacent second wire-holding grooves (12); and a gap is provided between the first wire-holding groove (11) and the second wire-holding groove (12); A gap is provided between the first wire-holding groove (11) and the second wire-holding grooves (12) on both sides thereof, and / or A gap is provided between the first wire-holding groove (11) and the second wire-holding groove (12) on one side thereof; Along the first spiral direction, the depth of the first wire-holding groove (11) gradually decreases from the middle to both ends, and / or Along the second spiral direction, the depth of the second wire-holding groove (12) gradually decreases from the middle to both ends.

2. The intracranial stent winding tooling according to claim 1, characterized in that: It also includes a first latch assembly and a second latch assembly, wherein the first latch assembly and the second latch assembly are symmetrically arranged at two ends of the wire clamping structure.

3. The intracranial stent winding tooling according to claim 2, characterized in that: The first latch assembly and the second latch assembly are rotationally symmetrically arranged at two ends of the wire clamping structure.

4. The intracranial stent wrapping tooling according to any one of claims 1 to 3, characterized in that: Any group of the latch assemblies comprises: at least one proximal latch member (31); and / or at least one middle latch member (32); and / or at least one distal latch member (33); Wherein, along the axial direction of the core shaft body (1), the proximal latch member (31) and / or the middle latch member (32) and / or the distal latch member (33) are arranged at intervals.

5. The intracranial stent winding tooling according to claim 4, characterized in that: Any of the latch components comprises a limiting portion to limit the position of the braided wire (21).

6. The intracranial stent winding tooling according to claim 5, characterized in that: The planes on which the proximal latch member (31) and / or the middle latch member (32) and / or the distal latch member (33) are located are arranged perpendicularly to the axis of the core shaft body (1).

7. The intracranial stent winding tooling according to claim 6, characterized in that: Along the axial direction of the core shaft body (1), any one of the distal latch components (33) is arranged between two adjacent middle latch components (32).

8. The intracranial stent winding tooling according to claim 7, characterized in that: The wire clamping structure also includes a developing wire groove (14), and the developing wire groove (14) is spirally arranged on the core shaft body (1).

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