Anti-shed fiber tufts, fiber tuft springs, and apparatus for making same

Abstract

The application discloses a kind of anti-falling fiber tufts, fiber hair spring ring and its manufacturing device.The anti-falling fiber tufts include: core line, the core line is used to be wound on spring ring;And multiple fiber hairs, multiple fiber hairs are fixed on the core line at intervals, the distance between adjacent fiber hairs can be designed and adjusted according to actual application requirements, to realize the control of the number and density of fiber hair.Winding on spring ring obtains anti-falling fiber hair spring ring.The application solves the drawbacks of easy spring ring fiber hair falling in clinical use, avoids the complications caused by spring ring fiber hair falling to distal blood vessels or entering the circulatory system;At the same time, it also overcomes the limitation of fiber hair point number, single fiber hair number and fiber hair length, realizes the maximization of thrombus formation function by using fiber hair.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, and more particularly to a fiber tuft, fiber tuft spring coil and a manufacturing device thereof. BACKGROUND

[0002] Spring coil embolization therapy is an important means of aneurysm embolization therapy, which was first used in the United States as early as 1889. With the development of science and technology and the continuous breakthrough of technology, fiber-tufted spring coils gradually appeared in the market, such as Axium MicroFX of Medtronic (using a unique loading process to wrap micro-fiber tufts made of Nylon or PGLA material on the spring coil platform), Interlock spring coil of Boston Scientific. Compared with traditional spring coils without fiber tufts, some documents show that fiber tufts on spring coils can increase thrombosis, achieve faster embolization, and are beneficial to immediate embolization. In addition, fiber-tufted spring coils can significantly reduce the number of embolization spring coils, which helps to reduce the cost of embolization surgery.

[0003] The application CN 115581491 A discloses a fiber tuft loading device, fiber-tufted spring coil for embolization and a preparation method thereof, which comprises a device body, the device body is provided with at least one fixed position for loading spring coils, the fixed position is provided with a plurality of winding sites, the winding sites are sequentially and spacedly arranged along the extension direction of the fixed position, and the winding sites are used to determine the loading position of the fiber tufts on the spring coils; and at least one cutting position for guiding a cutting tool to cut and separate the fiber silk wound on the device body to form fiber tufts. The fiber silk is regularly wound to realize efficient loading of fiber tufts on no less than one spring coil, and the controllability and stability of the loading site, loading spacing, length, number and other parameters of the fiber tufts can be ensured.

[0004] For the existing fiber hair spring ring on the market, the fiber hair parameters set by different manufacturers are different. For example, the fiber hair of the fiber hair releasable spring ring of COWAY MEDICAL has a diameter of 0.02 mm, a length of 2 mm, a fiber hair point interval of 2 mm, and a fiber hair quantity of 1 per unit point. The fiber hair parameters of the Interlock spring ring of Boston Scientific Company are a diameter of 0.02 mm, a length of 18 mm, a fiber hair point interval of 3 mm, and a fiber hair quantity of 48 per unit point. However, they have a common feature that multiple fiber hairs are wound in multiple fiber hair points and independently distributed on the spring ring and fixed to the surface of the spring ring by embedding into the spring gap. A serious disadvantage of this technical solution is that the risk of fiber hair shedding cannot be avoided. This is also confirmed by many complaints in clinical medicine that fiber hair shedding of the spring ring causes other problems. In theory, the more fiber hairs on the surface of the spring ring, the stronger the function of promoting thrombus formation. However, since the fiber hairs on the surface of the spring ring exist independently and have no relationship with each other, the more the absolute number of fiber hairs, the greater the probability of fiber hair shedding before, during or after the operation. This also limits the setting of fiber hair parameters and the interval and quantity of fiber hair points by different manufacturers, and restricts the maximization of the function of promoting thrombus formation.

[0005] Therefore, there is still a lack of a component or device that can reduce or avoid fiber hair shedding in the art. SUMMARY

[0006] The purpose of the present application is to provide a fiber hair bundle that prevents shedding, a fiber hair spring ring and a manufacturing device thereof. The present application solves the problem of fiber hair shedding of the spring ring in clinical use, avoids complications caused by fiber hair shedding of the spring ring to the distal blood vessels or into the circulatory system, and overcomes the limitations of the number of fiber hair points, the number of single fiber hairs and the length of fiber hairs, thereby maximizing the function of promoting thrombus formation by using fiber hairs.

[0007] In a first aspect of the present application, a fiber hair bundle that prevents shedding is provided, which comprises a core wire for winding on a spring ring, and a plurality of fiber hairs fixed on the core wire at intervals.

[0008] In another preferred embodiment, the distance from the core wire to the end of the fiber hair is 0.6-45 mm; preferably, 1.5-25 mm; more preferably, 2-10 mm.

[0009] In another preferred embodiment, the lengths of the plurality of fiber hairs can be the same or different.

[0010] In another preferred embodiment, the distance between adjacent said fiber hairs is equal to the diameter of a primary coil of said spring coil.

[0011] In another preferred embodiment, said core wire is hairless.

[0012] In another preferred embodiment, a plurality of said fiber hairs are hairy.

[0013] In another preferred embodiment, a plurality of said fiber hairs are fixed to said core wire by at least one of the following ways: gluing or welding.

[0014] In another preferred embodiment, the middle part of said fiber hairs is fixed to said core wire.

[0015] In a second aspect of the present application, there is provided a shed-resistant fiber hair spring coil, said fiber hair bundle comprising: a shed-resistant fiber hair bundle as described above; and a spring coil, said shed-resistant fiber hair bundle being wound around said spring coil.

[0016] In another preferred embodiment, said core wire of said shed-resistant fiber hair bundle is arranged inside said spring coil.

[0017] In another preferred embodiment, a plurality of said fiber hairs of said shed-resistant fiber hair bundle are exposed outside said spring coil.

[0018] In another preferred embodiment, said spring coil comprises a polypropylene wire (PP wire), said polypropylene wire being arranged in the inner cavity of said spring coil.

[0019] In another preferred embodiment, both ends of said polypropylene wire are fixed to both ends of said spring coil by means of gluing or welding, etc.

[0020] In another preferred embodiment, a glue joint is arranged at both ends of said spring coil, both ends of said PP wire being fixed to said glue joint.

[0021] In another preferred embodiment, said core wire of said shed-resistant fiber hair bundle is wound around said polypropylene wire.

[0022] In another preferred embodiment, a plurality of said fiber hairs of said shed-resistant fiber hair bundle extend from said core wire wound around said polypropylene wire to outside said spring coil through the gap between said spring coils.

[0023] In another preferred embodiment, said spring coil is flexible.

[0024] In a third aspect of the present application, there is provided a device for manufacturing the anti-shedding fiber bundle as described above, comprising: a core wire fixing track, which is a straight track for accommodating the core wire; a plurality of fiber fixing tracks for accommodating the fibers, which are arranged intersecting the core wire fixing track; and a fiber fixing hole arranged at the intersection of the core wire fixing track and the fiber fixing track, at which the core wire and the fibers are fixed integrally.

[0025] In another preferred embodiment, the distance between adjacent fiber fixing holes is 0.1-10 mm; preferably, 1-6 mm; more preferably, 2-4 mm.

[0026] In another preferred embodiment, the distance between adjacent fiber fixing holes is equal to the diameter of the primary coil of the spring ring.

[0027] The fiber fixing hole provides a working space for connecting the fiber and the core wire, facilitating the fixation of the fiber and the core wire by means of gluing or welding.

[0028] In another preferred embodiment, the lengths of the plurality of fiber fixing tracks can be different or the same.

[0029] In another preferred embodiment, the diameter of the fiber fixing track is 0.01-0.05 mm; preferably, 0.01-0.03 mm; more preferably, 0.02 mm.

[0030] In another preferred embodiment, the diameter of the core wire fixing track is 0.01-0.05 mm; preferably, 0.01-0.03 mm; more preferably, 0.02 mm.

[0031] In another preferred embodiment, the diameter of the fiber fixing hole is 0.02-0.08 mm; preferably, 0.03-0.05 mm; more preferably, 0.04 mm.

[0032] In another preferred embodiment, the device further comprises a core wire fixing element arranged at both ends of the core wire fixing track for tensioning the core wire.

[0033] In another preferred embodiment, the plurality of fiber fixing tracks are perpendicular to the core wire fixing track and / or form an acute angle of 20-70 degrees with the core wire fixing track.

[0034] In another preferred embodiment, the acute angle is 30-60 degrees.

[0035] In another preferred embodiment, the acute angle is 40-50 degrees.

[0036] In another preferred embodiment, the plurality of fiber hair fixing tracks form a zigzag shape and / or a wave shape.

[0037] In another preferred embodiment, the core line fixing track is between the upper and lower edges of the zigzag shape or the wave shape, and runs through the zigzag shape or the wave shape.

[0038] In another preferred embodiment, the core line fixing track is on a straight line where the midpoints of the plurality of fiber hair fixing tracks are located.

[0039] In another preferred embodiment, the device further comprises a fiber hair fixing auxiliary element, which is at least one of the following: a fiber hair fixing auxiliary groove arranged on the other side of the main body of the device opposite to the side where the fiber hair fixing tracks are located; a fiber hair fixing auxiliary column.

[0040] The fixing of the fiber hair thread is achieved by winding and fixing the fiber hair thread between the plurality of fiber hair fixing tracks and the plurality of fiber hair fixing auxiliary elements.

[0041] In another preferred embodiment, the fiber hair fixing auxiliary groove is located exactly on the central plane between the two adjacent fiber hair fixing tracks 3.

[0042] In another preferred embodiment, the fiber hair fixing auxiliary column is arranged on both sides where the plurality of fiber hair fixing tracks form a zigzag shape and / or a wave shape.

[0043] In another preferred embodiment, the fiber hair fixing auxiliary column is arranged in the same plane as the plurality of fiber hair fixing tracks.

[0044] In another preferred embodiment, the fiber hair fixing auxiliary column is arranged on the two sides adjacent to the plane where the fiber hair fixing tracks are located.

[0045] In another preferred embodiment, the fiber hair fixing auxiliary column is arranged at the two ends of the fiber hair fixing tracks.

[0046] In another preferred embodiment, the depth of the fiber hair fixing auxiliary groove is 1-20 mm; preferably 2-14 mm; more preferably 3-5 mm.

[0047] In another preferred embodiment, the width of the fiber hair fixing auxiliary groove is 0.01-0.05 mm; preferably 0.01-0.03 mm; more preferably 0.02 mm.

[0048] In another preferred embodiment, the distance between the fiber hair fixing tracks is the same as the spacing between the fiber hair fixing holes, and optionally the fiber hair fixing auxiliary grooves.

[0049] In another preferred embodiment, the position of the fiber hair fixing auxiliary groove 7 is set to be just on the center line of the two fiber hair fixing tracks 3.

[0050] In another preferred embodiment, the device further comprises a fiber hair cutting groove, at which a fiber hair thread is cut into multiple sections of the fiber hair.

[0051] In another preferred embodiment, the fiber hair cutting groove is a straight groove or a curved groove.

[0052] It should be noted that the position and / or number of the fiber hair cutting groove can be set according to actual needs, and the position and / or number are not unique.

[0053] In another preferred embodiment, the fiber hair cutting groove can also not be set separately. For example, when the fiber hair thread is arranged on the device body and wound between the fiber hair fixing auxiliary columns, there will be an overhead part between the device body and the fiber hair fixing auxiliary columns. By cutting the fiber hair thread at the overhead part, the fiber hair thread can be cut into multiple sections (strands).

[0054] In another preferred embodiment, the number of fiber hair cutting grooves is 1-8; preferably 2-5; more preferably 2-3.

[0055] In another preferred embodiment, the fiber hair cutting grooves appear in pairs, one of each pair is set on the front of the device body, and the other is correspondingly set on the back of the device body.

[0056] In another preferred embodiment, the number of fiber hair cutting grooves is at least one pair.

[0057] In another preferred embodiment, the number of fiber hair cutting grooves is two, and the two fiber hair cutting grooves are respectively located on the front and back of the device body, i.e., on the opposite two sides between the fiber hair fixing track and the fiber hair fixing auxiliary groove.

[0058] In another preferred embodiment, the distance between adjacent fiber hair cutting grooves is equal.

[0059] In another preferred embodiment, the distance between adjacent fiber hair cutting grooves is not equal.

[0060] In another preferred embodiment, the vertical distance between the fiber hair cutting groove and the core thread fixing track is 0.5-40mm; preferably 1-20mm.

[0061] In another preferred embodiment, the diameter of the fiber hair cutting groove is 0.01-0.05mm; preferably 0.01-0.03mm; more preferably 0.02mm.

[0062] In a fourth aspect of the present application, a device for making the anti-shedding fiber hair coil spring as described above is provided, which is a spiral hollow structure comprising: a spiral track forming a peripheral wall; and an inner cavity surrounded by the peripheral wall for accommodating the spring; wherein the fiber hair bundle is wound onto the spring through the spiral track; and wherein the pitch of the spiral track is equal to the pitch of the spring.

[0063] In another preferred embodiment, the inner diameter of the inner cavity is equal to the outer diameter of the spring.

[0064] In another preferred embodiment, the pitch of the spiral track is equal to the distance between adjacent fiber hair fixing holes.

[0065] In another preferred embodiment, when the fiber hair bundle is wound onto the spring, the core line of the fiber hair bundle is tightly wound and attached to the polypropylene line (PP line) inside the spring.

[0066] In another preferred embodiment, the way of fixing the spring in the inner cavity includes but is not limited to: glue dispensing, clamping, binding or hanging a weight.

[0067] In another preferred embodiment, the device for making the anti-shedding fiber hair coil spring as described above, i.e. the device for loading the fiber hair bundle onto the spring, is rigid.

[0068] Advantages of the present application:

[0069] The present application constrains the fiber hair by the fiber hair bundle, so that all the fiber hairs are pre-fixed on the core line as a whole, solves the problem of easy shedding of the spring coil fiber hair in clinical use, avoids the complications caused by the shedding of the spring coil fiber hair to the distal blood vessels or into the circulatory system; the design of placing the core line and the fiber hair root inside the spring coil further avoids the shedding of the fiber hair into the blood; at the same time, it also overcomes the limitations of the number of fiber hair points, the number of single fiber hairs and the length of fiber hairs, realizes the maximization of the function of promoting the formation of thrombus by fiber hair; only one device can be used to cut a fiber hair line into fiber hairs of the same or different lengths, and a fiber hair bundle formed by fixing multiple fiber hairs of different lengths on a core line can promote the formation of a more uniform thrombus block, the device structure is simple and easy to operate, and is suitable for mass production; the device for loading the anti-shedding fiber hair coil spring has a simple structure and is easy to operate, the cooperation (i.e. equality) between the pitch of the spiral track and the pitch of the spring improves the loading success rate, saves time and effort.

[0070] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features described in detail below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be listed here one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0072] Figure 1 is a schematic diagram of a fiber bundle in one embodiment of the present invention;

[0073] Figure 2 is a perspective view of a fiber bundle making device in one embodiment of the present invention;

[0074] Figure 3 yes Figure 2 A top view of the fiber bundle making device in FIG.

[0075] Figure 4 yes Figure 3 Enlarged view of part B;

[0076] Figure 5 yes Figure 2 A front view of the fiber bundle making device in FIG.

[0077] Figure 6 yes Figure 5 Enlarged view of part C;

[0078] Figure 7 yes Figure 5 Enlarged view of part E in the middle;

[0079] Figure 8 yes Figure 5 Enlarged view of part F;

[0080] Figure 9 yes Figure 2 A side view of a fiber bundle making device in FIG.

[0081] Figure 10 yes Figure 9 Enlarged view of part D in the middle;

[0082] Figure 11 is a front view of a fiber bundle making device in another embodiment of the present invention;

[0083] Figure 12is a perspective view of a fiber bundle making device in another example of the present application;

[0084] Figure 13 is Figure 12 is an enlarged view of part M in

[0085] Figure 14 is Figure 12 is a top view of a fiber bundle making device in

[0086] Figure 15 is Figure 14 is an enlarged view of part N in

[0087] Figure 16 is a front view of a fiber bundle loading device in an example of the present application;

[0088] Figure 17 is Figure 16 is an enlarged view of part G in

[0089] Figure 18 is Figure 16 is an enlarged view of part H in

[0090] Figure 19 is a schematic view of a middle section of a spring ring in an example of the present application;

[0091] Figure 20 is a schematic view of a whole spring ring in an example of the present application;

[0092] Figure 21 is a sectional view of a middle section of a spring ring against fiber shedding in an example of the present application.

[0093] In each of the drawings, each of the signs is as follows:

[0094] 1 - main body;

[0095] 2 - core wire fixing element;

[0096] 3 - fiber fixing rail;

[0097] 4 - core wire fixing rail;

[0098] 5 - fiber fixing hole;

[0099] 6 - fiber cutting groove;

[0100] 7 - fiber fixing auxiliary groove;

[0101] 8 - fiber bundle loading device;

[0102] 9 - head end;

[0103] 10 - end;

[0104] 11-spiral track;

[0105] 12-first circle diameter;

[0106] 13-polypropylene thread;

[0107] 14-fiber hair fixing auxiliary column;

[0108] 15-core thread;

[0109] 16-fiber hair;

[0110] 17-spring ring;

[0111] 18-gluing part. DETAILED DESCRIPTION

[0112] The present inventors, through extensive and in-depth research, have for the first time developed a kind of anti-falling fiber hair bundle, fiber hair spring ring and its manufacturing device. The present application connects multiple fiber hairs together through a core thread, effectively avoiding the falling of single fiber hair from the spring ring, and controls the number and density of the fiber hairs on the surface of the spring ring through the distance between the adjacent fiber hair fixing holes. The length of the fiber hairs can also not be completely the same, which helps to form a more uniform thrombus. The design of placing the core thread and the root of the fiber hair in the spring ring (the core thread is wound on the PP thread of the spring ring) further avoids the falling of the fiber hair into the blood. The cooperation relationship (i.e. equal) between the pitch of the spiral track and the pitch of the spring ring promotes the simplification of the manufacturing and loading process, on the basis of which the present application is completed.

[0113] The present application will be further described in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present application and not to limit the scope of the present application. In addition, the drawings are schematic drawings, so the dimensions or proportions of the devices and equipment of the present application are not limited by the schematic drawings.

[0114] It should be noted that in the claims and specification of the present patent, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including one" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0115] Example 1

[0116] The anti-falling fiber tuft in the present embodiment changes the traditional fiber winding scheme (i.e., the fiber is directly wound on the spring ring) and is first made into a fiber tuft to restrict all the fibers, and then the fiber tuft is wound on the spring ring to integrate the multiple fibers. Figure 1 The anti-falling fiber tuft of the present embodiment is composed of a core wire 15 and multiple fibers 16. The core wire 15 is used to be wound on a spring ring 17. The multiple fibers 16 (preferably, the middle part of the multiple fibers 16) are fixed on the core wire 15 at intervals, and the distance between adjacent fibers 16 is 0.1-10 mm, preferably 2 mm.

[0117] The advantage is that the design of the fiber tuft restricts and binds the multiple fibers 16 through the core wire 15, so that the single fibers are no longer independent of each other, but are tightly bound as a whole on the fiber tuft. The advantage of this design is that it fundamentally avoids the risk of single fiber falling off, breaks through the limitation of the number of fiber strands and point positions, and realizes the maximization of the function of promoting thrombus formation by using fibers.

[0118] Embodiment 2

[0119] The anti-falling fiber spring ring is obtained by winding the anti-falling fiber tuft in Embodiment 1 on the spring ring.

[0120] The anti-falling fiber spring ring involved in the present embodiment changes the traditional fiber winding scheme (i.e., the fiber is directly wound on the spring ring), and is first made into a fiber tuft, and then the fiber tuft is wound on the surface of the spring ring 17 to integrate the multiple fibers 16.

[0121] Embodiment 3

[0122] The anti-falling fiber spring ring of the present embodiment is similar to Embodiment 2, and the difference is that the spring ring 17 of the present embodiment further includes a polypropylene wire (PP wire) 13, as shown in

[0123] wherein the polypropylene wire 13 is located inside the spring ring 17, and its two ends are usually fixed to the two ends of the spring ring 17 by means of a glue joint 18. 12 shows the diameter of the primary ring of the spring ring. Figures 19-20 As shown in

[0124] the core wire 15 is wound on the polypropylene wire 13, and the free ends of the fibers 16 fixed on the core wire 15 protrude out of the spring ring 17. The protruding lengths of the fibers 16 can be the same or different. Figure 21

[0125] ​The anti-falling fiber hair spring ring of the embodiment is less likely to fall off because the root of the fiber hair 16 (the part fixed with the core wire 15) is inside the spring ring 17, and the surface of the spring ring 17 has good smoothness, and the fiber hairs 16 of different lengths extending out of the spring ring 17 are more conducive to forming a more uniform thrombus.

[0126] Embodiment 4

[0127] The present embodiment provides a fiber hair bundle manufacturing device. As shown in the schematic diagram of the fiber hair bundle manufacturing device involved in the present embodiment, Figures 2-10 The device is composed of a device main body 1, two core wire fixing elements 2, a plurality of fiber hair fixing tracks 3, a core wire fixing track 4, a plurality of fiber hair fixing holes 5, two fiber hair cutting grooves 6, and a plurality of fiber hair fixing auxiliary grooves 7.

[0128] As shown in Figures 3-4 The core wire fixing element 2 is located on both sides of the device, and its function is to fix the core wire at the top end of the device by winding or the like. The top end of the device has a plurality of fiber hair bundle tracks 3, which function to limit the position of the fiber hair and ensure that it is uniformly distributed on the fiber hair bundle. The diameter of the track is preferably 0.02 mm; the distance between the tracks is set to 0.1-10 mm, preferably 2 mm, so as to control the number and density of the fiber hair. When the fiber hair bundle is wound on the spring ring, the core wire 15 (the part without fiber hair) of the fiber hair bundle is just inside the spring ring (wound on the PP line), and the fiber hair can be exposed outside the spring ring, and the core wire wound on the PP line is the starting point. The top end of the device has a core wire fixing track 4, which functions to fix the position of the core wire, and the diameter of the track is preferably 0.02 mm. The top end of the device has a plurality of fiber hair fixing holes 5, which are located at the intersection of the fiber hair fixing track 3 and the core wire fixing track 4. The diameter of the fixing hole is preferably 0.03 mm, and its function is to provide operating space for connecting the fiber hair and the core wire, so as to facilitate the fixation of the fiber hair and the core wire by gluing or welding.

[0129] As shown in Figures 5-8 The device main body 1 also includes a pair of fiber hair cutting grooves 6, which are respectively located on the front and back of the device main body 1, and the distance from the top end of the device main body 1 is preferably 1-20 mm, which defines the length of the fiber hair. The diameter of the fiber hair cutting groove 6 is preferably 0.2 mm.

[0130] As shown in Figures 5-7As shown, the bottom of the device body 2 has a plurality of fiber hair fixing auxiliary grooves 7, the depth of which is preferably 5mm, and the width is preferably 0.02mm. Preferably, the distance between the grooves is the same as the spacing between the plurality of fiber hair fixing tracks 3. Preferably, the fiber hair fixing auxiliary grooves 7 are positioned on the central plane between the two fiber hair fixing tracks 3.

[0131] Embodiment 5

[0132] The present embodiment provides a fiber hair bundle manufacturing device which is basically the same as the fiber hair bundle manufacturing device in Embodiment 3, except that the fiber hair cutting groove 6 in the present embodiment is arranged in an arc shape, as shown in Figure 11 The function of this arrangement is to control the length of the fiber hair, making it tend to be shorter on both sides and longer in the middle. The advantage of this arrangement is that the fiber hair at both ends of the fiber hair ring is shorter and occupies less volume, so the required resistance during transportation is smaller. When using the fiber hair ring to embolize an aneurysm, the smaller resistance makes it easier for the fiber hair ring to enter the aneurysm. On the other hand, during the final stage of aneurysm embolization, a smaller transportation resistance is required to achieve a dense packing, while preventing the fiber hair ring from damaging the aneurysm, so that the fiber hair ring can be completely filled into the aneurysm cavity. The fiber hair in the middle part is longer, which increases the filling efficiency during aneurysm filling.

[0133] Embodiment 6

[0134] The present embodiment provides a fiber hair bundle manufacturing device which is basically the same as the fiber hair bundle manufacturing device in Embodiment 3, except that, as shown in Figures 12-15 The plurality of fiber hair fixing tracks 3 and the core wire fixing track 4 in the fiber hair bundle manufacturing device of the present embodiment form an angle of about 45 degrees, and the plurality of fiber hair fixing tracks 3 form a broken line, and the core wire fixing track 4 is on the straight line where the midpoints of the plurality of fiber hair fixing tracks 3 are located. The present embodiment discards the design of the fiber hair fixing auxiliary grooves 7 and the fiber hair cutting grooves 6, and instead sets fiber hair fixing auxiliary columns 14 on the two sides adjacent to the plane where the fiber hair fixing tracks 3 are located, and positions them close to the two ends of the fiber hair fixing tracks 3. By winding a fiber hair thread between the plurality of fiber hair fixing auxiliary columns 14 and embedding it in the fiber hair fixing tracks 3, the fiber hair is fixed, and then the fiber hair and the core wire are fixed together by means of gluing or welding.

[0135] Embodiment 7

[0136] The present embodiment provides a fiber hair bundle loading device, as shown in Figures 16-18As shown, the fiber bundle loading device 8 in this embodiment is a spiral hollow structure, consisting of a head end 9, a tail end 10, and a spiral track 11. The hollow inner diameter of the device is the outer diameter of the spring ring to be made. The pitch of the spiral track 11 is equal to the distance between the fiber fixing tracks 3 in the fiber bundle making device body 1. The function of this device is to pass the spring ring through the device, fix the spring ring in the device by clamping, hanging weights, etc., and wrap the fiber bundle around the surface of the spring ring through the spiral track.

[0137] The matching relationship (i.e. equality) between the pitch of the spiral track and the pitch of the spring ring facilitates the simplification of the making and loading process.

[0138] Embodiment 8

[0139] This embodiment provides a fiber bundle making method:

[0140] 1. Fix a core wire (material preferably Nylon or PLGA) on the core wire fixing track 4, and fix the two ends of the core wire on the core wire fixing elements 2 at the two ends of the fiber bundle making device by winding.

[0141] 2. Wrap the fiber (material preferably Nylon) tightly around the fiber bundle making device body 1, and limit the position of the fiber through the fiber fixing track 3 and the fiber fixing auxiliary groove.

[0142] 3. Achieve the mutual connection between the fiber and the core wire in the fiber fixing groove 5 by means of glue dispensing or welding.

[0143] 4. Cut the fiber in the fiber cutting groove 6 with a blade.

[0144] 5. Remove the core wire, and the fiber bundle is made.

[0145] Embodiment 9

[0146] This embodiment provides a fiber bundle loading method:

[0147] 1. Load a spring ring with matching outer diameter into the cavity in the center of the fiber bundle loading tool 8.

[0148] 2. Fix the spring ring at the head end 9 and the tail end 10 of the device by means of glue dispensing, clamping, or hanging weights at both ends of the spring ring.

[0149] 3. Wrap the fiber bundle tightly around the surface of the spring ring along the spiral track 11, and at this time the core wire of the fiber bundle should be tightly attached to the PP wire inside the spring ring.

[0150] 4. Remove the spring ring, and the fiber spring ring is made.

[0151] In addition, the fiber hair spring ring is connected with its pushing system by conventional means, and the fiber hair spring ring system is completed.

[0152] In the clinical treatment of aneurysm, the microcatheter is transported to the aneurysm neck, and the fiber hair spring ring is pushed out of the microcatheter to perform embolization treatment of the aneurysm. At this time, all the fiber hairs are bound by the core wire, which fundamentally avoids the risk of falling off.

[0153] All the documents mentioned in the present application are cited as references in the present application, as if each document is cited as a reference individually. In addition, it should be understood that, after reading the above teaching of the present application, those skilled in the art can make various modifications or changes to the present application, and these equivalent forms also fall within the scope defined by the claims attached to the present application.

Claims

1. A device for manufacturing a non-shedding fiber bundle, wherein the bundle comprises a core thread for winding around a spring ring, and a plurality of fiber hairs fixed on the core thread at intervals, and wherein the device comprises: a core thread fixing track, which is a straight track for accommodating the core thread; a plurality of fiber hair fixing tracks for accommodating the fiber hairs, which are arranged intersecting the core thread fixing track; and fiber hair fixing holes arranged at the intersection of the core thread fixing track and the fiber hair fixing tracks, at which the core thread and the fiber hairs are fixed integrally. The distance between adjacent fiber hair fixing holes is 0.1-10 mm. The distance between adjacent fiber hairs is equal to the primary loop diameter of the spring ring. The device further comprises core thread fixing elements arranged at both ends of the core thread fixing track for tensioning the core thread. The plurality of fiber hair fixing tracks are perpendicular to the core thread fixing track, and / or form an acute angle of 20-70 degrees with the core thread fixing track. The plurality of fiber hair fixing tracks form a zigzag shape and / or a wave shape. The core thread fixing track is between the upper and lower edges of the zigzag shape or the wave shape, and runs through the zigzag shape or the wave shape.

2. The apparatus of claim 1, wherein, The core thread fixing track is on a straight line where the midpoints of the plurality of fiber hair fixing tracks are located.

3. The apparatus of claim 1, wherein, The device further comprises fiber hair fixing auxiliary elements, which are at least fiber hair fixing auxiliary grooves arranged on the other side of the main body of the device opposite to the side where the fiber hair fixing tracks are located, and fiber hair fixing auxiliary columns.

4. The apparatus of claim 1, wherein, The fiber hair fixing auxiliary grooves are located on the central plane between two adjacent fiber hair fixing tracks.

5. The apparatus of claim 1, wherein, The fiber hair fixing auxiliary columns are arranged on both sides of the zigzag shape and / or the wave shape formed by the plurality of fiber hair fixing tracks.

6. The apparatus of claim 1, wherein, The fiber hair fixing auxiliary columns are arranged at both ends of the fiber hair fixing tracks.

7. The apparatus of claim 6, wherein, The device further comprises fiber hair cutting grooves, at which a fiber hair line is cut into a plurality of fiber hairs.

8. The apparatus of claim 1, wherein, The fiber hair cutting grooves are straight grooves or curved grooves.

9. The apparatus of claim 1, wherein, The fiber hair cutting grooves occur in pairs, one of each pair being arranged on the front surface of the main body of the device, and the other being correspondingly arranged on the back surface of the main body of the device.

10. The apparatus of claim 9, wherein, The fiber bundle is manufactured by the device according to any one of claims 1-15.

11. The apparatus of claim 9, wherein, The distance from the core thread to the end of the fiber hair is 0.6-45 mm.

12. The apparatus of claim 9, wherein, The distance between adjacent fiber hairs is equal to the primary loop diameter of the spring ring.

13. The apparatus of claim 1, wherein, The core thread is hairless.

14. The apparatus of claim 13, wherein, The plurality of fiber hairs are hairy.

15. The apparatus of claim 13, wherein, The plurality of fiber hairs are fixed on the core thread at least by gluing or welding.

16. A fiber bundle characterized in that, The middle part of the fiber hair is fixed on the core thread.

17. The fiber bundle of claim 16, wherein 23. A device for manufacturing a non-shedding fiber hair spring ring, wherein the fiber hair spring ring comprises:

18. The fiber bundle of claim 16, wherein, ​ 19. The fiber bundle of claim 16, wherein ​ 20. The fiber bundle of claim 16, wherein ​ 21. The fiber bundle of claim 16, wherein ​ 22. The fiber bundle of claim 16, wherein ​ ​ ​ The anti-shedding fiber bundle according to any one of claims 16-22; and A spring ring, the anti-shedding fiber bundle being wound on the spring ring; The device is a spiral hollow structure, comprising: A spiral track forming a peripheral wall; and An inner cavity surrounded by the peripheral wall for accommodating the spring ring; Wherein the fiber bundle is wound on the spring ring through the spiral track; Wherein the pitch of the spiral track is equal to the pitch of the spring ring.

24. The apparatus of claim 23, wherein, The inner diameter of the inner cavity is equal to the outer diameter of the spring ring.

25. The apparatus of claim 23, wherein, The pitch of the spiral track is equal to the distance between adjacent fiber hair fixing holes.

26. The apparatus of claim 23, wherein, When the fiber bundle is wound on the spring ring, the core wire of the fiber bundle is tightly wound and fitted with the polypropylene wire inside the spring ring.

27. The apparatus of claim 23, wherein, The way of fixing the spring ring in the inner cavity includes but is not limited to: dispensing, clamping, binding or hanging a weight.

28. The apparatus of claim 23, wherein The device is rigid.

29. A fiber flocking spring, characterized by The fiber hair spring ring is manufactured by the device according to any one of claims 23-28.

30. The fiber flocking spring ring of claim 29, wherein, The core wire of the anti-shedding fiber bundle is arranged in the spring ring.

31. The fiber flocking spring ring of claim 29, wherein, A plurality of fiber hairs of the anti-shedding fiber bundle are exposed outside the spring ring.

32. The fiber flocking spring ring of claim 29, wherein, The spring ring comprises a polypropylene wire arranged in the inner cavity of the spring ring.

33. The fiber flocking spring ring of claim 32, wherein, Both ends of the polypropylene wire are fixed at both ends of the spring ring by means of gluing or welding.

34. The fiber flocking spring ring of claim 32, wherein, Gluing parts are arranged at both ends of the spring ring, and both ends of the polypropylene wire are fixed on the gluing parts.

35. The fiber flocking spring ring of claim 32, wherein, The core wire of the anti-shedding fiber bundle is wound on the polypropylene wire.

36. The fiber flocking spring ring of claim 32, wherein, A plurality of fiber hairs of the anti-shedding fiber bundle extend from the core wire wound on the polypropylene wire to the outside of the spring ring through the gap between the spring rings.

37. The fiber flock spring ring of claim 29, wherein, The spring ring is flexible.

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