CN219355075U - Multi-needle module for skin application - Google Patents

Abstract

The utility model relates to a multi-needle module for skin application, comprising: a plurality of needles; a body having a needle hole through which the needle passes and an injection hole into which the adhesive is injected, an opening being formed at the rear, and an empty accommodating portion being formed therein; a connecting portion coupled to the rear opening of the body, having a connecting tube portion connected to the syringe formed at one end, a space formed inside the connecting portion by being surrounded by a partition wall having a height at the other end, and a plurality of first flow paths formed in a bottom surface through which the injection liquid flowing from the connecting tube portion is supplied to the needle; and a needle holder inserted into the connecting portion, having an adhesive injection portion formed at a side surface spaced apart from the body, having needle holes formed at a front surface into which a plurality of needles are inserted, and having a second flow path formed at a rear surface corresponding to the first flow path.

Description

Multi-needle module for skin application

Technical Field

The present utility model relates to a multi-needle module for skin application, and more particularly, to a multi-needle module for skin application capable of smoothly performing skin application without loss of medicine.

Background

In general, an application method (hereinafter referred to as "multi-hole application method") of inserting a plurality of minute holes in the skin and allowing medicines and the like to be put into the body is widely performed, such as application to remove various skin problems such as wrinkles, black spots, blemishes, striae, acne, freckles, pigmentation and the like, to maintain hair health and improve hair loss, and to treat obesity and the like. Such a porous application method can utilize the autogenous force of damaged skin tissue to grow new skin or allow medicines and the like to permeate into the body through minute holes, thereby achieving a rapid application effect.

The conventional multi-needle module for skin operation has to be added with components such as a vacuum pump and a suction pipe for sucking in skin, and thus has problems that not only a lot of manufacturing costs are required, but also the operation is very complicated from the standpoint of operators.

Korean patent No. 10-1508067 discloses a "multi-needle module for skin application". In the related art, the syringe guide is configured by a needle holder formed with a needle through hole, a syringe guide coupled to the needle holder, and a needle guide inserted into the inside of the syringe guide and the needle guide and mounted with a plurality of needles, and the syringe guide and the needle guide are integrally coupled by a medical adhesive. That is, after inserting the needle holder 40 into the jig 70, stacking the needle guide 20 in the needle holder 40 with the needle through-hole 43 and the needle coupling hole 23 aligned with each other, inserting the needle 30 into the needle through-hole 43 and the needle coupling hole 23 aligned with each other so that the front end of the needle 30 contacts the inner bottom surface of the jig 70 and is supported, stacking the syringe guide 10 on the needle guide 20, pouring the medical adhesive 5 on the upper portion of the syringe guide 10 so as to fill the needle through-hole 43, and then curing the medical adhesive 5, thereby integrally manufacturing the syringe. Accordingly, the bonding is performed separately in two steps, i.e., the needle holder is inserted, the needle is inserted, the primary bonding is performed, the needle guide is inserted, the syringe guide is inserted, the secondary bonding liquid is introduced into the subsequent bonding insertion hole, and the needle module is assembled by removing the secondary bonding liquid from the jig, and thus there is a problem in that the manufacturing process is complicated and the production efficiency is lowered due to the manual manufacturing.

In addition, conventionally, in order to assemble the needle module, a jig is required, and the medical adhesive needs to be injected from the syringe guide at the rear and filled into the needle through hole, and the medical adhesive cannot be injected deep into the inside due to the complicated structure, so that there is a problem that defective products occur.

Disclosure of Invention

The present utility model has been made to solve the problems of the prior art, and an object of the present utility model is to provide a multi-needle module for skin application, which can sufficiently inject an adhesive from the front of the module to the rear of the inside by simplifying the structure, and can firmly and simply adhere each component, thereby enabling the assembling process to be speedy and improving the reliability of the product.

The above object of the present utility model can be achieved by the following technical scheme.

The above object of the present utility model can be achieved by a multi-needle module for skin application comprising: a plurality of needles; a body having a needle hole through which the needle passes and an injection hole into which the adhesive is injected, an opening being formed at the rear, and an empty accommodating portion being formed therein; a connecting portion coupled to the rear opening of the body, having a connecting tube portion connected to the syringe formed at one end, a space formed inside the connecting portion by being surrounded by a partition wall having a height at the other end, and a plurality of first flow paths formed in a bottom surface through which the injection liquid flowing from the connecting tube portion is supplied to the needle; and a needle holder inserted into the connecting portion, having an adhesive injection portion formed at a side surface spaced apart from the body, having needle holes formed at a front surface into which a plurality of needles are inserted, and having a second flow path formed at a rear surface corresponding to the first flow path.

The first flow path includes: an introduction hole formed at the center of the bottom surface and communicating with the connection pipe portion; and a plurality of dispersion channels communicating with the introduction holes, each of the dispersion channels having an end portion including a liquid containing portion into which one end of the needle is inserted.

The needle holder is provided with an insertion part which is tightly attached to the inner bottom surface of the connecting part and is tightly attached to the inner side wall for insertion and combination.

The needle holder is inserted into the accommodating portion of the body and is fastened by being inserted at a predetermined interval from the lower portion of the body so as to be filled with an adhesive, and the needle, the body, the connecting portion, and the needle holder are all bonded and fixed at the same time by the adhesive B injected into the spaced-apart spaces.

The opening of the body is abutted against the opening of the connecting portion, an insertion boss is formed on one of the body and the connecting portion, the insertion boss is abutted against and coupled to the other of the body and the connecting portion, an end of the insertion boss is formed to a length of 1/10 to 9/10 of the inner surface length of the other opening, and the adhesive is filled into a portion of the recess corresponding to the thickness of the insertion boss to bond the portions.

The effects of the present utility model are as follows.

According to the present utility model, a jig is not required when assembling the needle module, so that the structure can be simplified, and since the adhesive is injected into the injection hole formed in the front of the needle module, the injection process is easy, and the injected adhesive can bond the cap and the case on both sides thereof with the connection portion as a medium, the bonding between the constituent members can be performed firmly and simply, and thus the number of assembly works can be reduced.

Further, there is an effect that the product reliability can be improved by preventing the connection pipe portion from idling.

Drawings

Fig. 1a is a front perspective view of a multi-needle module for skin application according to an embodiment of the present utility model.

Fig. 1b is a rear perspective view of a multi-needle module for skin application according to an embodiment of the present utility model.

Fig. 2a is an exploded perspective view from the front of a multi-needle module for skin application according to an embodiment of the present utility model.

Fig. 2b is an exploded perspective view from the rear of the multi-needle module for skin application of an embodiment of the present utility model.

Fig. 3a is a front perspective view of a multi-needle module for skin application according to another embodiment of the present utility model.

Fig. 3b is a rear perspective view of a multi-needle module for skin application according to another embodiment of the present utility model.

Fig. 4a is an exploded perspective view from the front of a multi-needle module for skin application according to another embodiment of the present utility model.

Fig. 4b is an exploded perspective view from the rear of a multi-needle module for skin application according to another embodiment of the present utility model.

Fig. 5a is a front perspective view of a multi-needle module for skin application according to yet another embodiment of the present utility model.

Fig. 5b is a rear perspective view of a multi-needle module for skin application according to yet another embodiment of the present utility model.

Fig. 6a is an exploded perspective view from the front of a multi-needle module for skin application according to yet another embodiment of the present utility model.

Fig. 6b is an exploded perspective view from the rear of a multi-needle module for skin application according to yet another embodiment of the present utility model.

Fig. 7a is a sectional view showing a state in which needles of a multi-needle module for skin application according to still another embodiment of the present utility model are exposed.

Fig. 7b is a cross-sectional view showing a state in which needles of a multi-needle module for skin application according to still another embodiment of the present utility model are not exposed.

Fig. 8 is a cross-sectional view showing the "dispersion channel 240" of the multi-needle module for skin application of the present utility model.

Fig. 9 is a cross-sectional view of a combination of the multiple needle module for skin application of the present utility model.

Fig. 10a to 10c are diagrams showing a connection pipe portion of another embodiment.

Fig. 11 is a view showing a state in which the multi-needle module for skin application of the present utility model is mounted to an injection device.

Reference numerals

100: body, 110: pinhole, 130: opening portion, 140: accommodation portion, 200: connection part, 220: connecting pipe portion, 230: introduction holes, 240: dispersion channel, 242: liquid accommodation portion, 300: needle holder, 320: adhesive injection part, 360: insert portion, 400: a needle.

Detailed Description

The preferred embodiments are described in detail below based on the drawings.

The embodiments to be described below are for detailed description to the extent that those skilled in the art to which the present utility model pertains are enough to easily implement the present utility model, and thus, are not intended to limit the technical spirit and scope of the present utility model.

Further, it is noted that the sizes or shapes of the constituent elements shown in the drawings may be exaggeratedly illustrated for the sake of clarity and convenience, and terms particularly defined in view of the construction and action of the present utility model may be varied according to the intention of a user, an operator or a convention, and the definition of these terms should be defined based on the contents throughout the present specification.

In the drawings, fig. 1a is a front perspective view of a multi-needle module for skin application according to an embodiment of the present utility model, fig. 1b is a rear perspective view of a multi-needle module for skin application according to an embodiment of the present utility model, fig. 2a is an exploded perspective view of a multi-needle module for skin application according to an embodiment of the present utility model, fig. 2b is an exploded perspective view of a multi-needle module for skin application according to an embodiment of the present utility model, fig. 3a is a rear perspective view of a multi-needle module for skin application according to another embodiment of the present utility model, fig. 4a is an exploded perspective view of a multi-needle module for skin application according to another embodiment of the present utility model, fig. 4b is an exploded perspective view of a multi-needle module for skin application according to another embodiment of the present utility model, fig. 5a is an exploded perspective view of a multi-needle module for skin application according to another embodiment of the present utility model, fig. 5b is an embodiment of a multi-needle module for skin application according to another embodiment of the present utility model, fig. 7b is an embodiment of a multi-needle module for skin application according to another embodiment of the present utility model, fig. 6b is an exploded perspective view of a multi-needle module for skin application according to another embodiment of the present utility model, fig. 6b is a cross-section view of the multi-needle module for skin application according to another embodiment of the present utility model, and fig. 6b is a multi-needle module for skin application of the multi-needle module for skin application according to another embodiment of the present utility model is a multi-needle module for skin application of the present utility model, fig. 10a, 10b and 10c are views showing a connection tube portion according to another embodiment of the present utility model, and fig. 11 is a view showing a state in which the multi-needle module for skin operation of the present utility model is mounted on an injection device.

As shown in fig. 1a to 2b, the multi-needle module A1 for skin application of the present utility model is connected to a syringe (S) and mounted on an injection device, and its structure generally includes a body 100, a connection part 200, a needle holder 300, and a plurality of needles 400. On the other hand, in order to protect the needle 400, a protective cap 500 may be further included. A vent 510 is formed on the protective cap 500 to allow air to smoothly flow so that the multi-needle module A1 for skin surgery is smoothly fastened to the protective cap.

More than one needle 400 is formed.

The body 100 has a pinhole 110 through which the needle 400 passes and an injection hole 120 into which the adhesive is injected, and an empty accommodating portion 140 is formed therein. For example, the pin hole 110 and the injection hole 120 are formed on the front panel 150 of the body 100. An opening 130 is formed at the rear of the body 100.

The needle guide tube 160 may be formed in the body 100 so as to extend from the needle hole 110 through which the needle 400 passes, and the needle 400 may be stably assembled by the needle guide tube 160.

The connection portion 200 is coupled to the rear opening 130 of the body 100, and has a connection tube portion 220 formed at one end to be connected to the syringe S. The other end is surrounded by a partition wall 250 having a height to form a space therein, and a plurality of first flow paths through which the injection liquid flowing from the connection pipe portion 220 is supplied to the needle are formed in the bottom surface.

The first flow path is formed with: an introduction hole 230 formed through the center of the bottom surface and communicating with the connection pipe portion 220; a plurality of dispersion passages 240 communicating with the introduction holes 230; and a liquid accommodating part 242 provided at an end of each of the dispersion channels 240, into which one end of the needle 400 is inserted.

The dispersion channels 240 may be arranged in various forms according to the number of needles, and are not limited to a specific shape as long as they are formed so that the medicine injected into the needles can be smoothly dispersed and injected.

The needle holder 300 is inserted into the connection part 200, and an adhesive injection part 320 is formed at a side surface to be spaced apart from the body 100 in such a manner as to fill the adhesive B, a needle hole 330 into which the plurality of needles 400 are inserted is formed at a front surface, and a second flow path corresponding to the first flow path is formed at a rear surface.

The second flow path is formed with: a second introduction hole 322 formed through the center of the rear bottom surface of the needle holder 300 and communicating with the introduction hole 230; a plurality of second dispersion channels 342 communicating with the second introduction holes 322; and a second liquid containing portion 346 located at an end of each of the second dispersion channels 342 for inserting one end of the needle 400.

The adhesive injection part 320 is formed to be inserted into the connection part 200 so as to be capable of forming a space to be filled with adhesive. The appearance of the adhesive injection part 320 is not limited to a specific shape, and is included in all cases where it is recessed inward in order to form a space to fill the adhesive.

Preferably, it may be formed to be inclined from the upper portion toward the lower portion, and the upper portion into which the adhesive B flows is a wide space, so that the adhesive is easily flown in, and the adhesive B may flow down along the inclined surface toward the lower portion, so that the adhesive B may be relatively easily filled in the upper space and the spaced-apart space of the needle holder 300 inside the cap.

Referring to fig. 7, the needle holder 300 is inserted into the accommodating part 140 of the body 100 and spaced apart from the lower part of the front panel 150 by a prescribed interval such that the adhesive B is filled in the spaced-apart space. The adhesive B can be easily filled in the space spaced apart and the upper space of the needle holder 300.

The needle holder 300 is abutted against the inner bottom of the connection part 200, and an insertion part 360 is convexly formed at a side surface to be inserted and coupled to be abutted against the inner sidewall of the connection part 200.

According to one embodiment, the opening of the body 100 is in surface-to-surface contact with the opening of the connecting portion 200, so that the body 100 and the connecting portion 200 can be bonded together by the adhesive B injected into the body, and the adhesive B can bond the fixing needle 400, the body 100, the connecting portion 200, and the needle holder 300 together.

Referring to fig. 2a, the outer surface of the opening 130 of the body 100 is recessed to form an insertion boss 180, and the insertion boss 180 is attached to the inner surface of the opening 201 of the connection part 200. Alternatively, according to fig. 4a, the outer surface of the opening (201) of the connection part (200) is recessed inward to form the insertion boss 280, and the insertion boss 280 is closely attached to the inner surface of the opening 130 of the body 100.

Preferably, referring to fig. 9, the opening 130 of the body 100 is formed to reach a position p1 of 1/10 to 9/10 of the length of the inner surface of the opening 201 of the connection portion 200. Therefore, the adhesive B can be filled in the portion recessed by the same amount as the thickness t1 of the opening of the body 100 so that the inner surface of the opening 201 of the connecting portion 200 can be bonded, and the body 100, the connecting portion 200, and the needle holder 300 can be bonded together. Further, the inner surface of the opening portion of the body 100 may be cut to the outside to form an insertion boss, in which case the outer surface of the opening portion 201 of the connection portion 200 is recessed to form an insertion boss in a manner corresponding to the insertion boss of the body 100, so that the insertion boss of the body 100 and the insertion boss of the connection portion 200 are closely and firmly coupled to each other. Therefore, even in the case where a strong pressure is applied during the filling of the adhesive B in the spaced-apart spaces, the adhesive B is prevented from leaking to the outside of the multi-needle module for skin application through the connection portion of the body 100 and the connection portion 200.

The connection portion 200 is formed with a connection pipe portion 220 communicating with a introduction hole 230 penetratingly formed at the center of the bottom portion.

Referring to fig. 8, the connection pipe portion 220 is formed at one end with a syringe coupling hole 222 and is formed at the inside with a passage 223.

Referring to fig. 10a, 10b, 10c, and connecting tube 220 is formed in a circular or oval shape, but at least one portion of the outer peripheral surface is formed with a locking surface 227 having a flat straight surface to prevent idling. Preferably, the flat linear locking surface 227 is formed on both sides of the connection pipe portion 220. When coupled to a syringe having a shape corresponding to the circular or elliptical shape of the connection tube part 220, the connection tube part 220 idles after being coupled to the syringe, but does not idle even after being coupled to both side surfaces of the connection tube part 220 due to the flat linear surface-shaped locking surface 227, so that it can be stably coupled and used.

On the other hand, the connecting tube portion 220 is formed with locking protrusions 225, 225a, 225b, 225c on the outer peripheral surface.

The locking protrusions 225, 225a, 225b, 225c may be variously formed in a quadrangular shape, a circular shape, an oval shape, etc., and are formed to protrude from the connection pipe portion 220, and the thus-protruding locking protrusions 225 are coupled to the injection device G.

Referring to fig. 10a, the locking protrusion 225a may be formed with a straight line portion 225-2 having a flat straight line surface at least one portion of the outer circumferential surface to prevent rotation. Preferably, the linear portion 225-2 having a flat linear surface shape is formed on both side surfaces of the locking protrusion 225 a. When the locking protrusion 225a is coupled to a syringe having a shape corresponding to the circular or elliptical shape of the locking protrusion 225a, the locking protrusion 225a is free to rotate after being coupled to the syringe, but the linear portion 225-2 having a flat linear surface shape is free to rotate even after the syringe is coupled to both side surfaces of the locking protrusion 225a, so that the locking protrusion can be stably coupled and used.

Referring to fig. 10b, the locking surface 227 and the locking protrusion 225b may be formed by thickly layering the rest of the outer peripheral surface of the connection pipe portion 220 except for a part, and the connection pipe portion 220 is formed in a circular shape or an oval shape, but the locking surface 227 having a flat straight surface is formed at least one portion of the outer peripheral surface to prevent the idle rotation. The locking protrusion 225b has a circular or oval shape, and a linear portion 225-2 having a flat linear surface is formed on at least one portion of the outer peripheral surface to prevent rotation.

Referring to fig. 10c, the locking surface 227 and the locking protrusion 225c may be formed by layering thicker along the outer circumferential surface of the connection pipe portion 220, and the locking surface 227 having a flat straight surface may be formed at least one portion of the outer circumferential surface to prevent idle rotation. Further, the locking protrusion 225c has a circular or oval shape, and a linear portion 225-2 having a flat linear surface is formed at least one portion of the outer peripheral surface to prevent rotation. Accordingly, the coupling connection pipe portion 220 and the locking protrusions 225, 225a, 225b, 225c are inserted into the mounting groove (not shown) formed in the injection device G so that the multi-needle module of the present utility model is fixed without being separated and is not idly rotated, thereby enabling stable coupling.

On the other hand, referring to fig. 3a, 3b, 4a, 4b, a multi-needle module A2 for skin application of an embodiment provided with 9 needles is shown.

The multi-needle module A2 for skin application according to another embodiment of the present utility model is connected to a syringe S and mounted on an injection device, and has a structure generally including a body 100, a connection part 200, a needle holder 300, and a plurality of needles 400. The body 100 is formed with a contact surface 163 contacting the skin at one side, an opening 130 at the rear, and an empty receiving part 140 at the inside. A plurality of needle holes (110) penetrating the needle are formed corresponding to the needle 400 on the inner side of the contact surface 163, and an injection hole 120 for injecting an adhesive is formed. On one side surface, the suction port 162 is formed so as to form a vacuum pressure inside in a state where the contact surface 163 is in contact with the skin. The needle guide tube 160 may be formed in the body 100 so as to extend from the needle hole 110 through which the needle 400 passes, and the needle 400 may be stably assembled by the needle guide tube 160.

Referring to fig. 5a, 5b, 6a, 6b, 9 needles are provided and the connection portion 200 is coupled in a screw-coupling manner with respect to the screw-needle type A3.

A multi-needle module A3 for skin application according to still another embodiment of the present utility model is connected to a syringe S and mounted on an injection device, and has a structure generally including a body 100, a connection part 200, a needle holder 300, and a plurality of needles 400. The body 100 includes a main body 101 and a dividing member 102. The needle holder 300 comprises a support 301 and a support plate 302. A plurality of needles 400 are provided, and one or more needles 400 are formed. Can be composed of 5 needles, 9 needles, 12 needles, etc. to improve the convenience of the operation.

The body 100 includes a main body 101 and a dividing member 102, wherein the main body 101 has a contact surface 163 contacting the skin on one side, a spiral portion 112 coupled to the dividing member 102 on the outer circumferential surface on the other side, a plurality of needle holes 110 penetrating the needle 400 are formed inside the contact surface 163, and an injection hole 120 for injecting an adhesive is formed. On one side surface, the suction port 162 is formed so that a vacuum pressure is formed inside the contact surface 163 in a state of being in contact with the skin. Inside the main body 101, a needle guide tube 160 may be formed to extend from the needle hole 110 through which the needle 400 passes, and the needle 400 may be stably assembled through the needle guide tube 160. A plurality of insertion pieces 165 are formed in the main body 101 to be inserted into the insertion grooves 313.

The dividing member 102 is divided into a plurality of divided members and coupled to each other to form a trunk, and the trunk is rotatably coupled along the screw portion 312 of the support frame 301, and one end is coupled to the main body 101 by insertion. For example, 2 dividing members may be butt-joined so that the dividing member 102 has a cylindrical shape.

As a specific example, as shown in fig. 6a and 6b, the dividing member 102 is composed of a first body 102a and a second body 102b that are butt-joined. The first body 102a and the second body 102b are respectively formed in arc shapes having the same radius. Further, the first body 102a and the second body 102b are formed with threads 104 on the inner peripheral surfaces, protruding steps 126 and 125 'on one end, and coupling grooves 125 and 126' on the other end, respectively. Accordingly, after the first body 102a, the second body 102b are butted against each other, the respective protruding steps 126, 125 'and the coupling grooves 125, 126' can be coupled by insertion to complete the division member 102 having the trunk of the cylindrical shape. Fig. 7a is a state where the needle 400 is maximally exposed, and fig. 7b shows a state where the needle 400 is not exposed. Accordingly, by moving the needle 400 and the needle holder 300, the length of the needle 400 exposed to the front of the body 100 can be appropriately adjusted. In addition, needle 400 may be protected by not exposing it prior to the procedure.

In the conventional needle assembly process, the bonding is performed separately in two steps, and after the needle is inserted into the needle holder 300, the bonding is performed once, and after the needle guide 200 is inserted, the syringe guide 100 is inserted, and the secondary bonding liquid is introduced into the adhesive introduction hole, and then removed from the jig, thereby complicating the manufacturing process.

In addition, since the adhesive injection hole is formed at the rear end of the needle and the adhesive is injected through the adhesive injection hole, it has been conventionally required to deform the shape of the locking protrusion to prevent the interference of the locking protrusion 225 formed at the rear end of the needle in order to inject the adhesive into the adhesive injection hole at the rear end of the needle. Conventionally, a needle module is inserted into a jig in an assembled state, a cap portion into which a needle is inserted is positioned in the jig, a connector for fixing the needle is inserted, the rear side of the needle module is positioned upward, and an adhesive is injected through an adhesive injection hole provided in the rear side of the needle module, and the jig is removed after the fixation is performed, thereby manufacturing the needle. However, by improving this, the present utility model removes the adhesive insertion hole at the rear end of the needle and injects the adhesive through the front injection hole 120 and fills it inside, so that the manufacturing process can be greatly simplified, and the shape of the locking protrusion 225 is not limited, so that the locking protrusion 225 of various sizes and appearances can be formed.

Although described with respect to preferred embodiments, those skilled in the art will readily recognize that various modifications and changes may be made without departing from the spirit and scope of the utility model, and it is apparent that such changes and modifications fall within the scope of the claims.

Claims (5)

1. A multi-needle module for skin application comprising:

a plurality of needles;

a body having a needle hole through which the needle passes and an injection hole into which the adhesive is injected, an opening being formed at the rear, and an empty accommodating portion being formed therein;

a connecting portion coupled to the rear opening of the body, having a connecting tube portion connected to the syringe formed at one end, a space formed inside the connecting portion by being surrounded by a partition wall having a height at the other end, and a plurality of first flow paths formed in a bottom surface through which the injection liquid flowing from the connecting tube portion is supplied to the needle; and

and a needle holder inserted into the connecting portion, having an adhesive injection portion formed at a side surface spaced apart from the body, having needle holes formed at a front surface into which a plurality of needles are inserted, and having a second flow path formed at a rear surface, the second flow path corresponding to the first flow path.

2. The multiple needle module for skin application according to claim 1, wherein,

the first flow path includes:

an introduction hole formed at the center of the bottom surface and communicating with the connection pipe portion; and

a plurality of dispersion channels communicating with the introduction holes, each of the dispersion channels having an end portion including a liquid containing portion into which one end of a needle is inserted.

3. The multiple needle module for skin application according to claim 1, wherein,

the needle holder is provided with an insertion part which is tightly attached to the bottom surface of the connecting part and is tightly attached to the inner side wall for connection.

4. The multiple needle module for skin application according to claim 1, wherein,

the needle holder is inserted into the accommodating part of the body and is inserted and fastened with a predetermined interval from the lower part of the body in a manner of being filled with an adhesive,

the needle, body, connector, needle holder are all bonded and secured together by an adhesive injected into the spaced apart interior of the space.

5. The multiple needle module for skin application according to claim 4, wherein,

the opening of the body is contacted with the opening of the connecting part to be tightly attached,

and an insertion boss is formed at one of the body and the connection part,

the insertion boss is closely coupled to the other one of the body and the connection part,

the end of the insertion boss is formed to a length of 1/10 to 9/10 of the length of the inner surface of the other opening, and the adhesive is filled into the recess corresponding to the thickness of the insertion boss for bonding.