A device and method for manufacturing a multi-lateral plug pin

Abstract

The application provides a preparation device and method of a multi-side plug-in core needle. The preparation device of the multi-side plug-in core needle comprises a first auxiliary plate and a second auxiliary plate, a plurality of first auxiliary holes are arranged on the first auxiliary plate, and a plurality of second auxiliary holes are arranged on the second auxiliary plate. The preparation device of the multi-side plug-in core needle can prepare the multi-side plug-in core needle only by arranging the plurality of first auxiliary holes on the first auxiliary plate and the plurality of second auxiliary holes on the second auxiliary plate. The device does not involve professional knowledge reserve requirements in the process of preparing the multi-side plug-in core needle, and the manufacturing process is fast and convenient, which simplifies the processing process and reduces the cost to the greatest extent. Meanwhile, the device can prepare the multi-side plug-in core needle with different fiber spacings by selecting the first auxiliary holes with different spacings, so that the operation of subsequent experimental personnel is facilitated while the experimental requirements are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of neuroscience, and in particular to a preparation device and method of a multi-lateral insertion core needle. BACKGROUND

[0002] In the research of neuroscience, especially at the level of neural circuit, it is inevitable to use optical genetic regulation and optical fiber imaging technology. Both of them have the common feature that the insertion core needle needs to be implanted in the target brain area, and then connected with the optical fiber to access the external stimulation input end or information acquisition system, so as to realize the regulation and recording of the target brain area.

[0003] Since the nervous system usually implements functions and regulation by the interaction of multiple brain areas, and the brain is composed of two symmetrical hemispheres, it is usually necessary to apply light stimulation or record imaging signals to the same brain area on both sides or even two single brain areas in the analysis of the nervous system. Currently, the commercially available insertion core needle is mainly a single insertion core needle with mature preparation process. Although a few manufacturers have prepared a double insertion core needle based on this, such products are currently expensive, and the distance between the two insertion core needles is generally too large to meet special experimental requirements. Currently, the commercially available insertion core needle for optical genetic regulation and optical fiber imaging technology is mainly a ceramic insertion core needle and a metal insertion core needle. The ceramic insertion core needle is realized by ceramic powder injection molding technology for industrial production, and the current price is relatively low. However, since industrial production needs to be customized according to drawings, the size of the commercially available double insertion core needle is limited by many factors. At the same time, the application range of multi-lateral or double insertion core needle is not as wide as single, and commercial customization is limited by large-scale production and inherent production line, with a long preparation period. In addition, due to the existence of a large number of experimental requirements in neuroscience experiments, the minimum production quantity causes a lot of unnecessary waste and increases the experimental trial and error cost.

[0004] Therefore, it is urgent to develop a device for processing multi-lateral or double insertion core needle with customized size based on single insertion core needle, so as to better realize the regulation and recording of the target area. SUMMARY

[0005] Therefore, the present application provides a preparation device and method of a multi-lateral insertion core needle to solve or at least partially solve the problems in the prior art.

[0006] In a first aspect, the present application provides a preparation device of a multi-lateral insertion core needle, comprising:

[0007] A first auxiliary plate, a plurality of first auxiliary holes are formed in the first auxiliary plate, and the first auxiliary holes are matched with the diameter of the optical fiber of the insertion core needle;

[0008] A second auxiliary plate is arranged below the first auxiliary plate, and the second auxiliary plate is provided with a second auxiliary hole corresponding to the first auxiliary hole, and the second auxiliary hole is matched with the fiber diameter of the ferrule needle.

[0009] Preferably, the diameter of the first auxiliary hole is 0.3-0.7 mm, and the distance between two adjacent first auxiliary holes is 0.1-0.8 mm.

[0010] Preferably, the first auxiliary hole includes a plurality of arrayed through holes arranged along the length direction of the first auxiliary plate, and each group of arrayed through holes is uniformly spaced, and the spacing distance of the through holes of one group of arrayed through holes is smaller than that of another group of arrayed through holes.

[0011] Preferably, the difference between the spacing distances of two adjacent groups of arrayed through holes is 0.1-0.3 mm.

[0012] Preferably, the preparation device of the multi-sided ferrule needle further comprises a support, and the first auxiliary plate and the second auxiliary plate are both mounted on the support.

[0013] Preferably, the preparation device of the multi-sided ferrule needle further comprises:

[0014] A first fixed plate is mounted on the support, and the first fixed plate is provided with a first mounting hole, and the first auxiliary plate is mounted in the first mounting hole.

[0015] A second fixed plate is mounted on the support, and the second fixed plate is provided with a second mounting hole, and the second auxiliary plate is mounted in the second mounting hole.

[0016] Preferably, the support comprises a base and connecting rods arranged on both sides of the upper end surface of the base, the second fixed plate is mounted between the two connecting rods, and the first fixed plate is mounted on one of the connecting rods.

[0017] Preferably, the preparation device of the multi-sided ferrule needle further comprises a third fixed plate, the third fixed plate is mounted on the other connecting rod, the third fixed plate is arranged above the second fixed plate, the third fixed plate is provided with a clamping hole for clamping the fiber of the ferrule needle, and the second auxiliary plate is provided with a third auxiliary hole corresponding to the clamping hole, and the third auxiliary hole is matched with the fiber diameter of the ferrule needle.

[0018] Preferably, the preparation device of the multi-side ferrule, the second auxiliary plate lower end corresponds to the second auxiliary hole and extends outward with a hollow limiting tube to limit the optical fiber of the ferrule.

[0019] In a second aspect, the present application also provides a preparation method of a multi-side ferrule, characterized in that comprising the following steps:

[0020] Providing the preparation device of the multi-side ferrule;

[0021] According to the number of ferrules and the spacing of the ferrules required to be prepared, the corresponding first auxiliary hole is selected according to the spacing of the ferrules, the optical fiber of the ferrule is inserted into the corresponding first auxiliary hole and then enters the second auxiliary hole after passing through the first auxiliary hole, and then the adhesive is poured between the first auxiliary plate and the second auxiliary plate, and after curing, the preparation of the multi-side ferrule is completed.

[0022] The preparation device and method of the multi-side ferrule of the present application have the following technical effects compared with the prior art:

[0023] The preparation device of the multi-side ferrule of the present application comprises a first auxiliary plate and a second auxiliary plate, a plurality of first auxiliary holes are arranged on the first auxiliary plate, and a plurality of second auxiliary holes are arranged on the second auxiliary plate; the preparation device of the multi-side ferrule of the present application can prepare the multi-side ferrule only by arranging a plurality of first auxiliary holes on the first auxiliary plate and a plurality of second auxiliary holes on the second auxiliary plate, and the device does not involve professional knowledge reserve requirements in the process of preparing the multi-side ferrule, the manufacturing process is fast and convenient, which maximizes the simplification of the processing process and reduces the cost; at the same time, the device can prepare the multi-side ferrule with different optical fiber spacing by selecting first auxiliary holes with different spacing, so as to realize the experimental demand and facilitate the operation of subsequent experimental personnel as much as possible. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a structural schematic view of the preparation device of the multi-side ferrule in one embodiment of the present application;

[0026] Figure 2 It is a structural schematic view of the ferrule used in the present application;

[0027] Figure 3is a front view of a first auxiliary plate in one of the embodiments of the present application;

[0028] Figure 4 is a front view of a second auxiliary plate in one of the embodiments of the present application;

[0029] Figure 5 is a front view of a second auxiliary plate in one of the embodiments of the present application;

[0030] Figure 6 is a structural schematic view of a preparation device for the double-sided insertion core needle prepared in Embodiment 1 of the present application. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0033] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0034] In the description of the present application, it should be understood that the orientation or position relationship indicated by terms such as "upper" is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly placed when the product of the present application is used, or the orientation or position relationship commonly understood by those skilled in the art, only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, the terms "first", "second", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] This application provides an apparatus for preparing multi-sided insert pins, such as... Figures 1-5 As shown, it includes:

[0038] The first auxiliary plate 1 has a plurality of first auxiliary holes 11, which are adapted to the diameter of the optical fiber of the ferrule.

[0039] The second auxiliary plate 2 is located below the first auxiliary plate 1. The second auxiliary plate 2 has a second auxiliary hole 21 corresponding to the first auxiliary hole 11. The second auxiliary hole 2 is adapted to the diameter of the optical fiber of the ferrule.

[0040] It should be noted that the fabrication apparatus for the multi-sided ferrule of this application includes a first auxiliary plate 1 and a second auxiliary plate 2. The first auxiliary plate 1 is located above the second auxiliary plate 2, and a plurality of first auxiliary holes 11 are formed on the first auxiliary plate 1. The first auxiliary holes 11 are adapted to the optical fiber diameter of the ferrule. Specifically, the ferrule 8 involved in this application is a commercially available single-sided ferrule, and its structure is as follows: Figure 2 As shown, the multi-sided ferrule includes a ceramic head 81 and an optical fiber 82. The first auxiliary hole 11 and the second auxiliary hole 21 are adapted to the optical fiber 82 of the ferrule 8. In use, based on the required number of ferrules in the multi-sided ferrule system, a corresponding number of ferrules are selected. The distance between any two adjacent ferrule fibers is determined according to the required distance. A suitable first auxiliary hole 11 is selected on the first auxiliary plate 1. The optical fiber 81 of the ferrule is then inserted into the corresponding first auxiliary hole 11, passing through the first auxiliary hole 11 and then into the second auxiliary hole 2. Adhesive is then poured between the first and second auxiliary plates. After curing, the multi-sided ferrule system is complete. Preparation; the specific adhesive can be epoxy resin adhesive; the multi-sided ferrule preparation device of this application can prepare multi-sided ferrules by simply setting multiple first auxiliary holes 11 on the first auxiliary plate 1 and multiple second auxiliary holes 21 on the second auxiliary plate 2. Moreover, the device does not require any professional knowledge in the preparation of multi-sided ferrules, and the manufacturing process is fast and convenient, which simplifies the processing process and reduces costs to the greatest extent. At the same time, by selecting different spacings of the first auxiliary holes 11, the device can prepare multi-sided ferrules with different fiber spacings, thereby ensuring that experimental requirements are met while facilitating the operation of subsequent experimental personnel as much as possible.

[0041] In some embodiments, the diameter of the first auxiliary hole 11 is 0.3-0.7 mm, and the distance between two adjacent first auxiliary holes 11 is 0.1-0.8 mm. Specifically, the diameter and distance of the first auxiliary hole 11 are determined according to the actual situation, for example, the diameter of the first auxiliary hole is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, or 0.7 mm; the distance between two adjacent first auxiliary holes 11 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, or 0.8 mm. Correspondingly, the diameter of the second auxiliary hole 21 is 0.3-0.7 mm, and the distance between two adjacent second auxiliary holes 21 is 0.1-0.8 mm, and the diameter of the second auxiliary hole 21 is approximately equal to the diameter of the first auxiliary hole 11.

[0042] In some embodiments, the first auxiliary hole includes a plurality of arrayed through holes arranged along the length direction of the first auxiliary plate, each group of arrayed through holes is uniformly spaced, and any two adjacent groups of arrayed through holes along the length direction of the first auxiliary plate, wherein the spacing distance of the through holes of one group of array is less than the spacing distance of the through holes of another group of array; further reference Figure 3 As shown, the first auxiliary hole includes a plurality of arrayed through holes, and the specific number of array groups can be 2, 3, 4, 5, …, n, and the following will be described by taking 4 groups of arrayed through holes as an example. The first group of arrayed through holes includes a plurality of first through holes 12 arranged at intervals, the second group of arrayed through holes includes a plurality of second through holes 13 arranged at intervals, the third group of arrayed through holes includes a plurality of third through holes 14 arranged at intervals, and the fourth group of arrayed through holes includes a plurality of fourth through holes 15 arranged at intervals. The plurality of first through holes 12 arranged at intervals are arranged at equal intervals, the plurality of second through holes 13 arranged at intervals are arranged at equal intervals, the plurality of third through holes 14 arranged at intervals are arranged at equal intervals, and the plurality of fourth through holes 15 arranged at intervals are arranged at equal intervals. The spacing distance between the first through holes 12 is less than the spacing distance between the second through holes 13, the spacing distance between the second through holes 13 is less than the spacing distance between the third through holes 14, and the spacing distance between the third through holes 14 is less than the spacing distance between the fourth through holes 15, that is, the spacing distance between the plurality of arrayed through holes gradually increases. By using this arrangement, different through holes can be selected to adjust the distance between two first auxiliary holes 11 to meet the preparation of multi-side ferrule pins of optical fibers with different distances.

[0043] In some embodiments, the interval distance difference of the through holes of the two adjacent array settings is 0.1-0.3 mm; that is, the interval distance difference of the through holes of the two adjacent array settings is 0.1 mm, 0.2 mm, 0.3 mm, for example, the interval distance between the second through holes 13 is greater than the interval distance between the first through holes 12, if the interval distance between the first through holes 12 is 0.1 mm, then the interval distance between the second through holes 13 can be 0.2-0.4 mm.

[0044] In some embodiments, a support is further included, and the first auxiliary plate 1 and the second auxiliary plate 2 are both mounted on the support.

[0045] In some embodiments, further comprising:

[0046] The first fixed plate 3 is mounted on the support, and the first fixed plate 3 is provided with a first mounting hole, and the first auxiliary plate 1 is mounted in the first mounting hole;

[0047] The second fixed plate 4 is mounted on the support, and the second fixed plate 4 is provided with a second mounting hole, and the second auxiliary plate 5 is mounted in the second mounting hole.

[0048] In the above embodiment, the first auxiliary plate 1 is mounted in the first mounting hole opened on the first fixed plate 3, specifically, the first auxiliary plate 1 is clamped in the first mounting hole, which facilitates the installation and disassembly of the first auxiliary plate 1; the second auxiliary plate 2 is mounted in the second mounting hole opened on the second fixed plate 4, and the second auxiliary plate 2 is clamped in the second mounting hole, which facilitates the installation and disassembly of the second auxiliary plate 2.

[0049] In some embodiments, the support includes a base 6 and connecting rods 5 located on both sides of the upper end surface of the base 6, the second fixed plate 4 is mounted between the two connecting rods 5, and the first fixed plate 3 is mounted on one of the connecting rods 5.

[0050] In the above embodiment, the first fixed plate 3 and the second fixed plate 4 are arranged in parallel and at intervals, the first fixed plate 3 is clamped on the connecting rod 5 by the fixed clamp 51, and the second fixed plate 4 is fixedly mounted between the two connecting rods 5; obviously, other ways can also be used to mount the first fixed plate 3 on the connecting rod 5 in practice, for example, a sliding rod can be arranged on one side of the first fixed plate 3, the sliding rod can move up and down relative to the connecting rod 5, screw holes are arranged on the sliding rod, and a plurality of screw holes are arranged on the connecting rod from top to bottom, the sliding rod is slid up and down to the appropriate position, and then a screw is screwed into the screw hole on the sliding rod and the screw hole on the connecting rod, thereby fixing the sliding rod and fixing the first fixed plate 3 on the connecting rod 5.

[0051] In some embodiments, a third fixed plate 7 is further included, the third fixed plate 7 is installed on the other connecting rod 5, the third fixed plate 7 is located above the second fixed plate 4, the third fixed plate 7 is provided with a clamping hole 71 for clamping the optical fiber of the ferrule pin, and the second auxiliary plate 2 is provided with a third auxiliary hole corresponding to the clamping hole 71, the third auxiliary hole is matched with the diameter of the optical fiber of the ferrule pin.

[0052] In the above embodiment, the third fixed plate 7 is installed on the other connecting rod 5, specifically, the third fixed plate 7 is clamped on the connecting rod 5 through a fixed clamp, the optical fiber of the ferrule pin can be inserted into the clamping hole 71 of the third fixed plate 7, and the second auxiliary plate 2 is provided with a third auxiliary hole corresponding to the clamping hole 71, the diameter of the third auxiliary hole is the same as that of the second auxiliary hole 21; when the optical fiber distance of the multi-side ferrule pin to be prepared is relatively large, the optical fiber of one of the ferrule pins can be inserted into the first auxiliary hole 11 opened on the first auxiliary plate 1, and the optical fiber of the other ferrule pin can be inserted into the clamping hole 71 of the third fixed plate 7, so as to meet the optical fiber distance with a relatively large interval.

[0053] In some embodiments, the second auxiliary plate 2 is provided with a hollow limiting tube 22 corresponding to the second auxiliary hole 21 at the lower end of the second auxiliary plate 2, so as to limit the optical fiber of the ferrule pin. That is, the second auxiliary plate 2 is provided with a hollow limiting tube 22 corresponding to the second auxiliary hole 21 at the lower end of the second auxiliary plate 2, the upper end of the hollow limiting tube 22 extends upward and communicates with the second auxiliary hole 21, the optical fiber of the ferrule pin extends into the hollow limiting tube 22 after passing through the second auxiliary hole 21, so as to limit and fix the optical fiber of the ferrule pin.

[0054] In some embodiments, the first auxiliary plate 1 and the second auxiliary plate 2 are both provided with scales, so that the interval between the first auxiliary hole 11 and the second auxiliary hole 21 can be directly read out.

[0055] Based on the same inventive concept, the embodiments of the present application further provide a preparation method of a multi-side ferrule pin, characterized in that the method comprises the following steps:

[0056] S1, providing the preparation device of the multi-side ferrule pin described above;

[0057] S2, determining the number of ferrule pins and the interval of the ferrule pins according to the multi-side ferrule pin to be prepared, selecting the corresponding first auxiliary hole on the first auxiliary plate according to the interval of the ferrule pins, inserting the optical fiber of the ferrule pin into the corresponding first auxiliary hole and then into the second auxiliary hole after passing through the first auxiliary hole, and then pouring the adhesive between the first auxiliary plate and the second auxiliary plate, so as to complete the preparation of the multi-side ferrule pin after solidification.

[0058] The following further illustrates the preparation method of the multi-side ferrule pin of the present application with specific examples. This part further illustrates the content of the present application in combination with specific examples, but should not be understood as a limitation of the present application. If not specifically stated, the technical means adopted in the examples are conventional means familiar to those skilled in the art. Unless specifically stated, the reagents, methods and equipment adopted in the present application are conventional reagents, methods and equipment in the art. The following takes the double-side ceramic head ferrule pin (i.e. containing two ferrule pins) with an optical fiber spacing of 0.7 mm as an example to introduce the manufacturing process of the ferrule pin. Commercially available single-side ferrule pins (i.e. containing only one ferrule pin) with an optical fiber diameter of 200 μm, a length of 10 mm and a ceramic head diameter of 1.25 mm are used for preparation. Since the required spacing of the double-side ferrule pin (0.7 mm) is smaller than the axial spacing of the ceramic heads of the single-side ferrule pin (1.25 mm), and the ferrule pin also needs to be connected to a jumper wire by means of a ceramic tube in the actual use process, the spacing of the ceramic heads of the ferrule pin needs to reach about 4 mm or so, the double-side ferrule pin is designed with the ceramic heads and the optical fiber slightly inclined, which meets the spacing requirement of the optical fiber ends of the double-side ferrule pin while ensuring the operation space for connecting the jumper wire at the ceramic head end.

[0059] Example 1

[0060] A preparation method of a multi-side ferrule pin, characterized in that it comprises the following steps:

[0061] S1, providing Figure 1 the preparation device of the multi-side ferrule pin shown in the figure;

[0062] S2, selecting two single-side ferrule pins, selecting two first auxiliary holes with a hole diameter of 0.5 mm (slightly smaller than the ceramic head diameter of the ferrule pin but larger than the optical fiber diameter) and a spacing of slightly larger than 0.7 mm (such as 0.9-1.2 mm) between adjacent two on the first auxiliary plate, inserting the optical fiber of the single-side ferrule pin into the corresponding first auxiliary hole and passing through the first auxiliary hole to enter the second auxiliary hole to form a structure with a slight angle between the ceramic head and the vertical direction and a vertical optical fiber end (the single-side ferrule pin adopted in the present application has a slight deformation, and the ceramic head can form a certain angle with the vertical direction), then pouring an epoxy resin adhesive between the first auxiliary plate and the second auxiliary plate, and heating the epoxy resin adhesive with a hot air gun to make it solidify, thereby completing the preparation of the double-side ferrule pin.

[0063] The structure schematic diagram of the double-side ferrule pin prepared in Example 1 is shown in Figure 6 , Figure 6 9 is the solidified epoxy resin adhesive.

[0064] The implantation method of the above-mentioned double-sided insertion core needle is as follows: the prepared double-sided insertion core needle is injected into the bilateral brain regions of a mouse. The anesthetized mouse is fixed on a small animal stereotactic instrument, then the scalp is cut, and a screw is implanted to fix the insertion core needle, avoiding the target brain region and the positioning area. Then one side of the double-sided insertion core needle is fixed to an optical fiber holder, the left arm of the positioning instrument is adjusted to keep the optical fiber vertical, then the mouse's head is positioned and leveled by using the optical fiber on this side, and the positions of the two target brain regions above the skull are marked respectively, a hole is drilled, and then the optical fiber is implanted. After the implantation is completed, the insertion core needle is fixed by using dental cement, and after the dental cement is completely solidified, the optical fiber holder is loosened, and the operation is completed.

[0065] The above merely describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for preparing multi-sided insert pins, characterized in that, The utility model relates to a kind of multi-side ferrule, including: First auxiliary plate, multiple first auxiliary holes are opened on it, the first auxiliary hole is adapted to the fiber diameter of ferrule needle; Second auxiliary plate, it is located below the first auxiliary plate, the second auxiliary plate is equipped with second auxiliary hole corresponding the first auxiliary hole, the second auxiliary hole is adapted to the fiber diameter of ferrule needle; Support, the first auxiliary plate, second auxiliary plate are installed on support; First fixed plate, it is installed on the support, first mounting hole is equipped on the first fixed plate, the first auxiliary plate is installed in the first mounting hole; Second fixed plate, it is installed on the support, second mounting hole is equipped on the second fixed plate, the second auxiliary plate is installed in the second mounting hole; The support includes base and connecting rod located at the upper end face of the base two sides, the second fixed plate is installed between two connecting rods, the first fixed plate is installed on one of the connecting rods; Third fixed plate, the third fixed plate is installed on another connecting rod, the third fixed plate is located above the second fixed plate, the third fixed plate is equipped with clamping hole for clamping the fiber of ferrule needle, the second auxiliary plate is equipped with third auxiliary hole corresponding clamping hole, the third auxiliary hole is adapted to the fiber diameter of ferrule needle; The second auxiliary plate lower end corresponds to the second auxiliary hole and extends outward with hollow limiting tube to limit the fiber of ferrule needle.

2. The apparatus for manufacturing a multi-side-inserted core pin according to claim 1, wherein The diameter of the first auxiliary hole is 0.3~0.7mm, and the distance between two adjacent first auxiliary holes is 0.1~0.8mm.

3. The apparatus for manufacturing a multi-side-inserted core pin according to claim 1, wherein The first auxiliary hole includes multiple groups of arrayed through holes arranged along the length direction of the first auxiliary plate, each group of arrayed through holes is uniformly spaced, and the spacing distance of the through holes in one group of arrayed through holes is less than that of the through holes in another group of arrayed through holes.

4. The apparatus for manufacturing a multi-side-inserted core pin according to claim 3, wherein The difference between the spacing distances of the through holes in two adjacent groups of arrayed through holes is 0.1~0.3mm.

5. A method for preparing a multi-sided insert pin, characterized in that, The utility model includes the following steps: Providing a preparation device for multi-side ferrule as claimed in any one of claims 1~4; Determining the number of ferrule needles and the spacing distance of ferrule needles according to the required multi-side ferrule, selecting corresponding first auxiliary holes on the first auxiliary plate according to the spacing distance of ferrule needles, inserting the fiber of ferrule needle into the corresponding first auxiliary hole and passing through the first auxiliary hole to enter the second auxiliary hole, then pouring adhesive between the first auxiliary plate and the second auxiliary plate, and after curing, the preparation of multi-side ferrule is completed.

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