阅读说明：本技术 多针头辅助工具及基于多针头辅助工具的多针点胶方法 (Multi-needle auxiliary tool and multi-needle dispensing method based on multi-needle auxiliary tool ) 是由 罗清 于 2021-08-09 设计创作，主要内容包括：本发明涉及医疗技术领域,提供了一种多针头辅助工具,还提供一种基于多针头辅助工具的多针点胶方法,其中一种多针头辅助工具,包括：置入工装,具有针端安装腔以及与针端安装腔相连通的若干针管置入孔；定向工装,与置入工装组装,定向工装设有用于供针头安装件套入的定向柱,定向柱上具有若干导向孔,各针管置入孔与相应的导向孔在同一直线上；定长工装,与置入工装组装,定长工装上具有定长面,定长面设置于针管置入孔背向导向孔的延长方向上。与现有技术相比,本发明可以减少多针输出长度的偏差以及多针输出平面的偏差,实现了高精度控制固定出针长度及高精度控制多针管的刃面朝向一致,满足多针注射头上多针管的点胶要求。(The invention relates to the technical field of medical treatment, and provides a multi-needle auxiliary tool and a multi-needle dispensing method based on the multi-needle auxiliary tool, wherein the multi-needle auxiliary tool comprises: the inserting tool is provided with a needle end mounting cavity and a plurality of needle tube inserting holes communicated with the needle end mounting cavity; the directional tool is assembled with the placing tool and is provided with a directional column for the needle mounting piece to be sleeved in, the directional column is provided with a plurality of guide holes, and each needle tube placing hole and the corresponding guide hole are in the same straight line; and the fixed length tool is assembled with the placing tool, a fixed length surface is arranged on the fixed length tool, and the fixed length surface is arranged on the extending direction of the needle tube placing hole back to the guide hole. Compared with the prior art, the invention can reduce the deviation of the output length of the multiple needles and the deviation of the output plane of the multiple needles, realizes the high-precision control of the fixed needle output length and the high-precision control of the consistent orientation of the blade surfaces of the multiple needle tubes, and meets the dispensing requirement of the multiple needle tubes on the multiple needle injection head.)

1. A multi-needle accessory tool, comprising:

the needle end installing cavity is used for containing a needle end installing part of the needle head installing piece, and the needle tube installing holes are communicated with the needle end installing cavity;

the directional tool is assembled with the placing tool and is provided with a directional column for a needle mounting piece to be sleeved in, the directional column is provided with a plurality of guide holes, each guide hole is internally provided with a needle tube guide surface, and each needle tube placing hole and the corresponding guide hole are on the same straight line;

and the fixed length tool is assembled with the placing tool, a fixed length surface is arranged on the fixed length tool, and the fixed length surface is arranged on the extending direction of the needle tube placing hole back to the guide hole.

2. The multi-needle accessory tool of claim 1, wherein the elongate fixture has a first guide surface located between the elongate surface and the needle access opening, the first guide surface being oriented in the same direction as the needle guide surface.

3. The multi-tip assisting tool according to claim 1, wherein the guide post includes a guide head and a guide block, the guide head has a guide cavity formed therein and fitted into one end of the guide block, each of the guide holes is formed in the guide head and communicates with the guide cavity, the guide block has a second guide surface formed at a fitted end of the guide head, the second guide surface being located in an extending direction of each of the guide holes and forming a needle tube guide surface in each of the guide holes.

4. The multi-tip accessory tool of claim 3, wherein the orienting tool further comprises an orienting seat, the orienting post further comprises a guide sleeve disposed on the orienting seat, and the guide block is disposed in the guide sleeve.

5. The multi-needle accessory tool of claim 4, wherein the orientation fixture further comprises a base, wherein a mounting groove is formed in the base, the orientation post is disposed on the orientation seat, and the orientation seat is positioned in the mounting groove.

6. The multi-needle assistant tool as claimed in claim 1, wherein said insertion tool has an insertion recess, each of said needle insertion holes is provided on a bottom of said insertion recess and communicates said needle tip mounting chamber and said insertion recess, said setting tool has a positioning boss for being fitted into said insertion recess, and a face of said positioning boss facing each of said needle insertion holes is said setting face.

7. The multi-tip assisting tool according to claim 1, wherein the inserting tool has a positioning post thereon, and the orientation tool has a positioning hole thereon for cooperating with the positioning post; or the directional tool is provided with a positioning column, and the directional tool is provided with a positioning hole matched with the positioning column.

8. A multi-needle dispensing method based on a multi-needle auxiliary tool, characterized in that the multi-needle auxiliary tool according to any one of claims 1 to 7 is adopted, and the method comprises the following installation steps:

step a, sleeving a needle mounting piece into a directional column of a directional tool, assembling an embedding tool on the directional tool, and accommodating a needle end mounting part of the needle mounting piece into a needle end mounting cavity to enable a needle tube embedding hole to be aligned with a needle hole on the needle end mounting part;

b, putting the needle tubes with the corresponding number into the needle tube placing holes one by one, sequentially penetrating the needle tubes through the needle tube placing holes and the needle holes and finally penetrating into the guide holes of the orientation columns, and covering the placing tool with a fixed-length tool;

c, vertically placing the multi-needle auxiliary tool, and vibrating the multi-needle auxiliary tool downwards to enable the direction of the blade tip of the needle tube in the needle tube mounting piece to be the same as the direction of the guide surface of the needle tube;

d, placing a multi-needle auxiliary tool in an inverted mode, enabling the extension end of the needle tube at the needle end mounting part to abut against the fixed length surface, and determining the extension length;

and e, dispensing the needle tube at the position of the step d to fix the needle tube on the needle head mounting piece.

9. The multi-needle dispensing method based on the multi-needle auxiliary tool as claimed in claim 8, wherein in the step c, the multi-needle auxiliary tool is vertically placed, and the multi-needle auxiliary tool is vibrated downwards, so that the direction of the blade tip of the needle tube in the needle mounting piece is the same as that of the needle tube guide surface in the orientation tool, and the needle tube guide surface performs primary guide on the direction of the blade tip of the needle tube; and d, placing the multi-needle auxiliary tool upside down, enabling the extension end of the needle tube at the needle end mounting part to abut against the fixed length surface and the first guide surface, determining the extension length of the fixed length surface, enabling the direction of the blade surface of the extension end of the needle tube to be the same as that of the first guide surface, and enabling the first guide surface to guide the blade tip of the needle tube towards the second time in the fixed length process.

10. A multi-needle dispensing method based on a multi-needle auxiliary tool as claimed in claim 9, wherein in the step d, the multi-needle auxiliary tool is placed upside down, and the multi-needle auxiliary tool is shaken or slightly vibrated in the up-down direction to make the extended end of the needle tube at the needle end mounting portion fully abut against the fixed length surface and the first guide surface.

Technical Field

The invention belongs to the technical field of medical treatment, and particularly relates to a multi-needle auxiliary tool and a multi-needle dispensing method based on the multi-needle auxiliary tool.

Background

The injector comprises an injection head and a piston core rod matched with the injection head, and is a common medical appliance. The injection needles of the existing common injectors are only provided with one needle tube, when the injection dosage is larger, the design size of the needle tube is larger, and the single-needle injector can only carry out corresponding large intramuscular injection and is not suitable for subcutaneous injection with large dosage. A multi-needle injector is currently produced, which is provided with a plurality of small-sized needle tubes, and solves the problem of large-dose subcutaneous injection by adopting a multi-needle injection mode.

When a multi-needle injector is used for injection, the precision requirement of the injector is high, and particularly the arrangement mode of needle tubes needs to be orderly arranged on the shell of the injection head. However, in the prior multi-needle injector, the needle tubes are manually fixed on the needle end mounting part of the injection head shell, so that the problem that the directions of the blade tips of the needle tubes are not consistent easily occurs, the extending lengths of the needle tubes are difficult to ensure to be consistent, the base surface of needle output is influenced, and the injection of an operator is further influenced.

Disclosure of Invention

The embodiment of the invention aims to provide a multi-needle auxiliary tool, which aims to solve the technical problem that the existing needle tubes are difficult to orderly glue and glue on a multi-needle injection head and ensure the installation accuracy of the needle tubes on the multi-needle injection head.

In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a multi-needle accessory tool comprising: the needle end installing cavity is used for containing a needle end installing part of the needle head installing piece, and the needle tube installing holes are communicated with the needle end installing cavity; the directional tool is assembled with the placing tool and is provided with a directional column for a needle mounting piece to be sleeved in, the directional column is provided with a plurality of guide holes, each guide hole is internally provided with a needle tube guide surface, and each needle tube placing hole and the corresponding guide hole are on the same straight line; and the fixed length tool is assembled with the placing tool, a fixed length surface is arranged on the fixed length tool, and the fixed length surface is arranged on the extending direction of the needle tube placing hole back to the guide hole.

The multi-needle auxiliary tool provided by the invention has at least the following beneficial effects: compared with the prior art, the multi-needle auxiliary tool of the invention designs three tools, namely an embedding tool, an orientation tool and a length fixing tool to realize accurate dispensing and fixing of a plurality of needle tubes on a needle installation part, the plurality of needle tubes are accurately placed on the needle installation part fixed by the orientation tool and the embedding tool from needle tube embedding holes and are guided by guide holes on the orientation tool, needle blade surfaces of all the needle tubes face in a set direction, and then the length fixing tool is assembled, the extending length of the needle tube on the needle mounting piece is determined through the fixed length surface on the fixed length tool, and through the installation mode of the needle tube, the deviation of the multi-needle output length and the deviation of the multi-needle output plane can be reduced, the mounting precision of the needle tubes on the multi-needle injection head is improved, the fixed needle-out length is controlled in a high-precision mode, the blade face orientation of the multi-needle tubes is controlled in a high-precision mode to be consistent, and the dispensing requirement of the multi-needle tubes on the multi-needle injection head is met.

Optionally, the length fixing tool is provided with a first guide surface between the length fixing surface and the needle tube insertion hole, and the first guide surface and the needle tube guide surface are in the same guide direction.

Optionally, the directional column includes a guide head and a guide block, a guide inner cavity sleeved into one end of the guide block is arranged in the guide head, each guide hole is arranged on the guide head and communicated with the guide inner cavity, a second guide surface is arranged at the sleeved end of the guide block on the guide head, and the second guide surface is located in the extending direction of each guide hole and forms a needle tube guide surface in each guide hole.

Optionally, the orientation tool further comprises an orientation seat, the orientation column further comprises a guide sleeve arranged on the orientation seat, and the guide block is arranged in the guide sleeve.

Optionally, the orientation tool further comprises a base, wherein a mounting groove is formed in the base, the orientation column is arranged on the orientation seat, and the orientation seat is positioned in the mounting groove.

Optionally, the insertion tool device is provided with an insertion groove, each needle tube insertion hole is formed in the bottom of the insertion groove and communicates with the needle end mounting cavity and the insertion groove, the fixed-length tool device is provided with a positioning boss for buckling the insertion groove, and the table top of the positioning boss facing the needle tube insertion hole is the fixed-length surface.

Optionally, the placing tool is provided with a positioning column, and the orientation tool is provided with a positioning hole matched with the positioning column; or the directional tool is provided with a positioning column, and the directional tool is provided with a positioning hole matched with the positioning column.

In order to achieve the above object, the present invention further provides a multi-needle dispensing method based on the multi-needle auxiliary tool, which adopts the multi-needle auxiliary tool, and comprises the following installation steps:

step a, sleeving a needle mounting piece into a directional column of a directional tool, assembling an embedding tool on the directional tool, and accommodating a needle end mounting part of the needle mounting piece into a needle end mounting cavity to enable a needle tube embedding hole to be aligned with a needle hole on the needle end mounting part;

b, putting the needle tubes with the corresponding number into the needle tube placing holes one by one, sequentially penetrating the needle tubes through the needle tube placing holes and the needle holes and finally penetrating into the guide holes of the orientation columns, and covering the placing tool with a fixed-length tool;

c, vertically placing the multi-needle auxiliary tool, and vibrating the multi-needle auxiliary tool downwards to enable the direction of the blade tip of the needle tube in the needle tube mounting piece to be the same as the direction of the guide surface of the needle tube;

d, placing a multi-needle auxiliary tool in an inverted mode, enabling the extension end of the needle tube at the needle end mounting part to abut against the fixed length surface, and determining the extension length;

and e, dispensing the needle tube at the position of the step d to fix the needle tube on the needle head mounting piece.

The multi-needle dispensing method based on the multi-needle auxiliary tool provided by the invention at least has the following beneficial effects: according to the invention, through the installation mode of the needle tubes, the deviation of the output length of the multiple needles and the deviation of the output plane of the multiple needles can be reduced, the installation precision of the needle tubes on the multi-needle injection head is improved, the fixed needle-out length is controlled at high precision, the blade face orientation of the multiple needle tubes is controlled at high precision, and the dispensing requirement of the multiple needle tubes on the multi-needle injection head is met.

Optionally, in the step c, the multi-needle auxiliary tool is vertically placed, and the multi-needle auxiliary tool is vibrated downwards, so that the direction of the blade tip of the needle tube in the needle mounting piece is the same as that of the needle tube guide surface in the orientation tool, and the needle tube guide surface performs primary guide on the direction of the blade tip of the needle tube; and d, placing the multi-needle auxiliary tool upside down, enabling the extension end of the needle tube at the needle end mounting part to abut against the fixed length surface and the first guide surface, determining the extension length of the fixed length surface, enabling the direction of the blade surface of the extension end of the needle tube to be the same as that of the first guide surface, and enabling the first guide surface to guide the blade tip of the needle tube towards the second time in the fixed length process.

Optionally, in the step d, the multi-needle auxiliary tool is placed in an inverted manner, and the multi-needle auxiliary tool is shaken or micro-vibrated in the up-down direction, so that the extension end of the needle tube at the needle end mounting part is fully abutted against the fixed length surface and the first guide surface

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a front view of a multi-needle accessory tool provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the multi-needle accessory tool provided in FIG. 1 in full section;

FIG. 3 is an enlarged partial schematic view of the multi-needle accessory tool provided in FIG. 2 at A;

FIG. 4 is an enlarged partial schematic view of the multi-needle accessory tool provided in FIG. 2 at B;

FIG. 5 is a schematic bottom structure view of the insertion tool provided in FIG. 2;

fig. 6 is a schematic structural view of the length fixing tool provided in fig. 2;

FIG. 7 is a schematic structural view of an orienting tool and an implanting tool for mounting a needle mounting member according to an embodiment of the present invention;

FIG. 8 is a schematic view of a needle cannula for insertion into a multi-tip accessory tool in accordance with an embodiment of the present invention;

FIG. 9 is a schematic view of a multi-needle accessory tool of the present invention with a needle mount and needle cannula in place;

fig. 10 is a schematic view of a separation structure of a fixed-length tool on a multi-needle auxiliary tool according to another embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

an insertion tool 100, a needle end installation cavity 110, a needle tube insertion hole 120 and an insertion groove 130;

the guide device comprises an orientation tool 200, an orientation column 210, a guide head 211, a guide inner cavity 2111, a guide block 212, a second guide surface 2121, a guide sleeve 213, a guide hole 220, a base 230, a mounting groove 231, an orientation seat 240 and a through hole 241;

the fixed-length tool 300, the fixed-length surface 310, the positioning boss 320, the first guide surface 330, the top seat 340, the fixed-length column 341, the middle seat 350 and the fixed-length groove 351;

positioning columns 410 and positioning holes 420;

a needle mount 500.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

A multi-needle assisting tool provided in accordance with an embodiment of the first aspect of the present invention will now be described with reference to the accompanying drawings.

Referring to fig. 1 to 9, a multi-needle auxiliary tool includes an inserting tool 100, an orienting tool 200, and a length fixing tool 300, the inserting tool 100 has a needle end mounting cavity 110 and a plurality of needle tube inserting holes 120 communicated with the needle end mounting cavity 110, the needle end mounting cavity 110 is used for accommodating needle end mounting portions of a needle tube mounting member 500, the needle end mounting portions are provided with a plurality of needle holes, each needle tube inserting hole 120 corresponds to a needle hole, and is in the same direction as the corresponding needle hole, and after being inserted into the needle tube inserting hole 120, a needle tube extends into and penetrates through the corresponding needle hole along the needle tube inserting hole 120. The directional tool 200 is assembled with the placing tool 100 and used for determining the orientation of the blade face of the needle tube, a directional column 210 is arranged on the directional tool 200, the directional column 210 is used for being sleeved with a needle mounting piece 500, a liquid injection hole used for being sleeved with a piston core rod is formed in the needle mounting piece 500, when the multi-needle tube is mounted, the needle mounting piece 500 is sleeved in a positioning column 410 through the liquid injection hole, the multi-needle tube is fixed on the directional tool 200 and the placing tool 100 by combining with a needle end mounting cavity 110, and the directional tool 200 and the placing tool 100 form a mounting station for fixing the needle mounting piece 500. The orientation column 210 has a plurality of guide holes 220, each guide hole 220 has a needle guide surface therein, each needle insertion hole 120 is aligned with the corresponding guide hole 220, a needle passage is formed among the needle insertion hole 120, the needle hole and the guide hole 220, and the needle can linearly shuttle in the needle passage. The fixed-length tool 300 is assembled with the insertion tool 100 and used for determining the output length of the needle tube, the fixed-length tool 300 is provided with a fixed-length surface 310, the fixed-length surface 310 is arranged in the extending direction of the needle tube insertion hole 120 back to the guide hole 220 and is intersected with the straight line where each needle tube insertion hole 120, namely the needle tube channel is located, the farthest extending distance of the needle tube on the multi-needle-head auxiliary tool relative to the needle-head installation part 500 is achieved, and the longest extending distance of the needle tube can be determined after the needle tube abuts against the fixed-length surface 310.

It should be noted that the needle mounting device 500 refers to a dispensing fixing component on a multi-needle injector for directly mounting a needle tube, such as an injection head housing on an integrated injector, or a needle seat on a split injector for dispensing and fixing a needle tube, etc.

Compared with the prior art, the multi-needle auxiliary tool of the invention designs the three tools of the placing tool 100, the orientation tool 200 and the fixed-length tool 300 to realize accurate dispensing and fixing of the multi-needle tubes on the needle mounting piece 500, the plurality of needle tubes are accurately placed on the needle mounting piece 500 fixed by the orientation tool 200 and the placing tool 100 from the needle tube placing holes 120 and are guided by the guide holes 220 on the orientation tool 200, the needle blade surfaces of all the needle tubes face in the set direction, then the fixed-length tool 300 is assembled, the extending length of the needle tubes on the needle mounting piece 500 is determined by the fixed-length surface 310 on the fixed-length tool 300, by the installation mode of the needle tubes, the deviation of the output length of the multi-needle and the deviation of the output plane of the multi-needle can be reduced, the installation precision of the needle tubes on the multi-needle injection head is improved, the fixed-needle outlet length can be controlled with high precision, and the blade surfaces of the multi-needle tubes can be controlled to face in the consistent with high precision, the dispensing requirement of a plurality of needle tubes on the multi-needle injection head is met.

In one embodiment of the present invention, referring to fig. 10, the definite length tooling 300 has a first guide surface 330 between the definite length surface 310 and the needle insertion hole 120, and the first guide surface 330 is oriented in the same direction as the needle guide surface. In this embodiment, the fixed-length tool 300 includes an upper seat 340 and a middle seat 350, which can be assembled, the middle seat 350 can be assembled with the insertion tool 200, and an assembly structure is provided between the fixed-length tool and the insertion tool 200, the upper seat 340, the middle seat 350 and the insertion tool 200 are sequentially assembled together, wherein the upper seat 340 is provided with a fixed-length column 341 penetrating on the middle seat 350, the fixed-length surface 310 and the first guide surface 330 are both disposed on the fixed-length column 341, the fixed-length tool 300 is provided with a fixed-length groove 351 facing the needle-end mounting cavity 110, after the fixed-length column 341 penetrates on the middle seat 350, the fixed-length surface 310 and the first guide surface 330 penetrate into the fixed-length groove 351, and during the fixed-length process, the needle tube 351 extends into the fixed-length groove and contacts with the fixed-length surface 310 and the first guide surface 330 in the fixed-length groove 351, thereby completing the fixed-length and final orientation process.

In another embodiment of the present invention, referring to fig. 6, the length-fixing surface 310 is a plane, and the straight line of the length-fixing surface 310 and each guide hole 220 is perpendicular to the straight line of the needle passage. At this time, the fixed length surface 310 is the same as the distance of the needle hole on the needle end mounting part of the needle mounting member 500, after each needle tube extends out from the injection needle, the needle tube is abutted against the fixed length surface 310, the extending tip of each needle tube forms a plane through the plane structure of the fixed length surface 310, and due to the vertical design between the fixed length surface 310 and the needle hole, the extending distance of each needle tube is the same.

In addition, the fixed length surface 310 can be reasonably designed according to the extending arrangement mode of the multiple needle heads, when the multiple needle tubes are obliquely arranged, the fixed length surface 310 can be an inclined surface which is intersected with the needle holes but not vertical to the needle holes, and can be designed according to the oblique arrangement angle; fixed length blind holes can also be designed on the fixed length surface 310, the extended tips of the needle tubes extend into and abut against the hole bottoms of the fixed length blind holes, and the output length of each needle tube is set through the designed depth of the fixed length blind holes. Of course, the longline face 310 may be other flat or non-flat surfaces depending on the needle end output length of the multiple needle tip, and remain within the scope of the present invention.

In another embodiment of the present invention, referring to fig. 2 and 4, the orientation column 210 includes a guide head 211 and a guide block 212, a guide cavity 2111 is provided in the guide head 211 and is inserted into one end of the guide block 212, a guide cavity 2111 is provided in each guide hole 220, the guide cavity 2111 is used for being inserted into one end of the guide block 212, the guide hole 220 is provided in the guide head 211 and is communicated with the guide cavity 2111, the guide block 212 is provided with a second guide surface 2121 at the inserted end of the guide head 211, the guide cavity 2111 and the guide block 212 form a closed space after the guide head 211 is inserted in the guide block 212, the second guide surface 2121 intersects with but is not perpendicular to each guide hole 220, an angle between the second guide surface 2121 and the guide hole 220 is adapted to an inclination of a blade surface of a needle tube, and the second guide surface 2121 is located in an extending direction of each guide hole 220 and forms a guide surface of the needle tube in each guide hole 220. After the needle tube enters the guiding hole 220, the bottom tip of the needle tube abuts against the second guiding surface 2121 in the guiding hole 220, and the bottom tip is provided with an inclined surface which can be consistent with the orientation of the second guiding surface 2121 under the guiding action of the second guiding surface 2121 to realize the orientation function.

Further, the orientation tool 200 further includes an orientation base 240, the orientation column 210 further includes a guide sleeve 213 disposed on the orientation base 240, and the guide block 212 is disposed in the guide sleeve 213. By providing guide block 212 as a removable structure within guide sleeve 213, guide block 212 may be replaced with a different slope of guide post 210 as needed to match guide hole 220 with a different type of needle cannula.

Further, the orientation tool 200 further comprises a base 230, wherein a mounting groove 231 is formed in the base 230, the orientation column 210 is disposed on an orientation seat 240, and the orientation seat 240 is positioned and disposed in the mounting groove 231. The bottom of the orientation base 240 is provided with a square base, the installation groove 231 is a square groove adapted to the square base, the square base and the square groove are matched to position the orientation base 240 on the base 230, and in addition, the orientation base 240 can be positioned and arranged on the installation groove 231 through other polygonal structures or irregular structures.

Still further, the bottom of the orientation base 240 has a through hole 241 penetrating the guide sleeve 213, and the guide block 212 enters the guide sleeve 213 from the through hole 241. In this embodiment, the needle mount 500 is mounted on the guide housing 213, the guide head 211 is disposed at an end of the guide housing 213 near the needle end mounting portion of the needle mount 500, and the guide block 212, which corresponds to the inner core of the orientation post 210, can be replaced without removing the needle mount 500 from the orientation post 210 to replace the needle guide surface in the guide hole 220.

In another embodiment of the present invention, the insertion tool 100 has an insertion groove 130, each needle insertion hole 120 is disposed on the bottom of the insertion groove 130 and communicates with the needle end mounting cavity 110 and the insertion groove 130, a needle enters from the insertion groove 130 and is inserted into the needle insertion hole 120 disposed in the insertion groove 130, which can prevent the needle from falling from the insertion tool 100 during the insertion process to a certain extent, the fixed-length tool 300 has a positioning boss 320 for being fastened into the insertion groove 130, the positioning boss 320 is positioned and assembled on the insertion tool 100, the table surface of the positioning boss 320 facing the needle insertion hole 120 is a fixed-length surface 310, and a fixed-length distance is formed between the fixed-length surface 310 and each needle insertion hole 120. The positioning projection 320 forms a closed space after being snapped into the insertion groove 130, and the closed space serves as a moving distance of the needle between the needle insertion hole 120 and the fixation surface 310.

In another embodiment of the present invention, the inserting tool 100 has a positioning post 410, and the orientation tool 200 has a positioning hole 420 matching with the positioning post 410; or, the orientation tool 200 has a positioning column 410, and the orientation tool 200 has a positioning hole 420 matching with the positioning column 410. The placing tool 100 and the orientation tool 200 are assembled through the positioning column 410 and the positioning hole 420, in this embodiment, the positioning column 410 is disposed on the placing tool 100, the positioning hole 420 is disposed on the orientation tool 200, the placing tool 100 is downwards buckled into the positioning hole 420 in the shape of the positioning hole 420, the length-fixing tool 300 is assembled at the upper end of the placing tool 100, and the orientation tool 200 is assembled at the lower end of the placing tool 100.

The multi-needle dispensing method based on the multi-needle auxiliary tool according to the second aspect of the present invention is described below.

Referring to fig. 1 to 10, a multi-needle dispensing method based on a multi-needle auxiliary tool, which adopts the multi-needle auxiliary tool according to the first embodiment of the present invention, includes the following steps:

step a, sheathing a needle mounting piece 500 into a directional column 210 of a directional tool 200 along an X direction, assembling an embedding tool 100 on the directional tool 200, namely installing the embedding tool 100 on the directional tool 200 along a Y direction, wherein a needle end installation part of the needle mounting piece 500 is accommodated in a needle end installation cavity 110, so that a needle tube embedding hole 120 is aligned with a needle hole on the needle end installation part, at the moment, the needle mounting piece 500 is fixed on the directional tool 200 and the embedding tool 100, and an embedding groove 130 is opened towards the upper end;

step b, referring to fig. 7 and 8, placing a corresponding number of needle tubes into the needle tube insertion holes 120 one by one from the notches at the upper ends of the insertion grooves 130, wherein the needle tubes sequentially pass through the needle tube insertion holes 120 and the needle holes of the needle end mounting portions, and finally penetrate into the guide holes 220 of the orientation posts 210 under the action of gravity or external force, the tips of the needle tubes arranged in the needle tube mounting members 500 abut against the needle tube guide surfaces in the guide holes 220, and then the insertion tool 100 is covered with the fixed-length tool 300, so that the assembly of the whole multi-needle auxiliary tool is completed;

step c, referring to fig. 9, vertically placing the multi-needle auxiliary tool, vibrating the multi-needle auxiliary tool downward, continuously adjusting the tip blade surface of the needle tube under the vibration effect, gradually attaching the tip blade surface to the second guide surface 2121, and finally making the blade tip direction of the needle tube in the needle tube mounting part 500 the same as the needle tube guide surface;

step d, placing the multi-needle auxiliary tool upside down to enable the extending end of the needle tube at the needle end mounting part to be abutted against the fixed length surface 310, and determining the extending length of the needle tube at the needle end mounting part 500;

and e, dispensing the needle tubes at the positions of the step d to fix the needle tubes on the needle mounting piece 500, and completing dispensing and fixing of the needle tubes.

In step c, the bottom end of the needle tube can be abutted against the second guide surface 2121 of the guide hole 220 by a hand grabbing shaking mode, and machine vibration or other modes. In this embodiment, the dispensing position of the needle tube is performed in the needle end mounting cavity 110 of the insertion tool 100, the dispensing portion of the needle mounting member 500 is exposed outside the needle end mounting cavity 110, and the glue can be used to dispense the inserted needle tube through the dispensing position.

In one embodiment of the present invention, referring to fig. 10, the length fixing tool 300 has a first guide surface 330 for final guidance. In step c, the needle tube guide surface, i.e. the second guide surface 2121, is used for primarily guiding the direction of the blade tip of the needle tube; in step d, the multi-needle auxiliary tool is placed in an inverted mode, the extending end of the needle tube at the needle end mounting portion abuts against the fixed length surface 310 and the first guide surface 330, the fixed length surface 310 determines the extending length, the direction of the blade surface of the extending end of the needle tube is the same as that of the first guide surface 330, the first guide surface 310 conducts secondary guide on the direction of the blade tip of the needle tube in the length fixing process, and the secondary guide is fine guide in the final process of the needle tube. Through the cooperation of primary direction and secondary direction, can improve the fixed length directional reliability of needle tubing on the syringe shell, can effectively prevent the fracture of needle tubing prong.

In addition, in step d, after the multi-needle auxiliary tool is placed in an inverted state, the multi-needle auxiliary tool is slightly swung or slightly vibrated in the inverted direction, i.e., in the up-down direction, by a human hand, so that the extension end of the needle end mounting portion of the needle tube is sufficiently abutted against the fixed length surface 310 and the first guide surface 330, and the extension length and the final needle tube orientation are determined.

Compared with the prior art, the method has the advantages that by the adoption of the needle tube mounting mode, the deviation of the output length of the multiple needles and the deviation of the output plane of the multiple needles can be reduced, the mounting precision of the needle tubes on the multiple needle injection head is improved, the fixed needle outlet length is controlled in a high-precision mode, the blade faces of the multiple needle tubes are controlled in a consistent direction in a high-precision mode, and the dispensing requirement of the multiple needle tubes on the multiple needle injection head is met.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.