KR102524999B1 - Multipurpose Injection Needle - Google Patents

Abstract

A multipurpose injection needle includes a molded injection needle and a puncture injection needle that slides on the outside of the molded injection needle. The molded injection needle includes a first hub having a 1-1 passage communicating along the longitudinal direction, and a first needle unit coupled to the front of the first hub and having a 1-2 passage along the longitudinal direction. The puncture injection needle includes a second hub having a 2-1 passage communicating along the longitudinal direction and a second needle unit coupled to the front of the second hub and having a 2-2 passage having an inner diameter larger than the outer diameter of the first needle unit.

Description

Multipurpose Injection Needle {Multipurpose Injection Needle}

The present invention relates to an injection needle, and more particularly, to a combination injection needle capable of sequentially performing skin puncture and shaping (injection or suction).

An injection needle penetrates a specific part of a patient and is used to inject an injection solution into the skin or to inhale/extract blood, bone marrow, fat, pus, etc. in the skin. It is used in combination with the neck part.

An injection needle usually consists of a hub coupled to the neck of a barrel, and a needle with one side (rear end) coupled and fixed to the hub and the other side (front) protruding forward.

The hub is usually made of plastic and forms an injection liquid connection passage passing through the inside along the longitudinal direction. The needle portion is usually made of metal and forms a needle flow path penetrating along the longitudinal direction. The needle part is usually formed so as to have a pointed end that is slanted from one side to the other at the front tip, through which the tip is configured to easily pierce the skin.

On the other hand, recently, as examples of using injection needles for shaping, for example, wrinkle improvement, lifting, etc., are increasing, injection needles in a form in which fillers, lifting threads, etc. are easily inserted, so-called shaping injection needles, are widely used. Unlike general injection needles in which the tip of the needle part is sharp, the molded injection needle has a blunt tip (blunt shape) and a hole (opening) through which filler, lifting thread, etc. are discharged is formed on the side.

However, cosmetic injection needles have a blunt tip, making it difficult to puncture the skin. At the site of the procedure, a general (puncture) injection needle with a sharp tip is used to first form a small hole in the skin (puncture procedure), and then Plastic surgery is being performed by inserting cosmetic needles. However, after performing the primary procedure (skin puncture), when the puncture needle is removed and the shaping needle is inserted into the puncture hole for cosmetic surgery, it is not easy to find the puncture hole, and also the puncture needle and cosmetic injection There is a problem in that the procedure time and the fatigue of the procedure increase by performing the perforation procedure and the plastic procedure separately using the needles separately (separately).

[Prior patent]

1. Korean Patent Publication No. 10-2022-0072384 (needle and syringe using the same)

2. Korean Patent Registration No. 10-2125976 (filler syringe and filler injection method using the same)

The present invention is to solve the problems of the prior art,

First, by continuously performing the first procedure (perforation procedure) and the second procedure (cosmetic procedure), the procedure time and fatigue are reduced,

Second, when the cosmetic injection needle is inserted into the puncture needle, the needle part of the shaping injection needle is easily inserted into the needle part of the puncture needle so that workability or processability can be improved. combination of injection needles).

The composite injection needle of the present invention for achieving this object includes a shaped injection needle and a punctured injection needle.

The shaped injection needle may include a first hub and a first needle portion. The first hub may include a 1-1 flow path selectively coupled to the rear of the neck portion formed at the front end of the barrel and communicating along the longitudinal direction. The first needle unit may include a 1-2 flow path coupled to the front of the first hub and communicating with the 1-1 flow path along the longitudinal direction.

The puncture injection needle may include a second hub and a second needle portion. The second hub may include a 2-1 flow path selectively tightly coupled to the outer surface of the first hub and communicating with the rear inner surface of the second hub in the longitudinal direction. The second needle unit may include a 2-2 flow path coupled to the front of the second hub, but having an inner diameter greater than the outer diameter of the first needle unit and communicating with the 2-1 flow path. The second needle part may be shorter than the first needle part. The puncture needle can slide longitudinally along the outer surface of the first needle portion.

In the composite injection needle of the present invention, the first needle portion of the shaping injection needle may have a blunt tip, and the second needle portion of the puncture needle portion may have a pointed tip.

In the composite injection needle of the present invention, the inner width of the 2-1 flow path of the punching injection needle continuously decreases in the direction of the second needle portion at least in the area where it is coupled with the second needle portion, and the second needle portion and the boundary 2-2 It may be provided with an inclined portion having the same inner width as the inner diameter of the passage.

In the composite injection needle of the present invention, the first hub of the shaping needle may be longer than the second hub of the puncture needle. In this case, the entire inner surface of the second hub may come into close contact with a part of the outer surface of the first hub.

In the composite injection needle of the present invention, the first hub of the shaping injection needle may have a first coupling protrusion or a first coupling groove on an outer surface. In this case, the second hub of the puncture needle may have a first coupling protrusion or a second coupling groove or a second coupling projection selectively coupled to the first coupling groove on an inner surface thereof.

The composite injection needle of the present invention having such a configuration first performs skin puncture using a piercing injection needle, and then performs a second procedure (cosmetic procedure) using a shaping injection needle without separating the piercing injection needle from the shaping injection needle. Since it can be performed continuously, the operation time and fatigue of the operation can be greatly reduced.

In addition, in the composite injection needle of the present invention, the width of the inner surface continuously decreases while going in the direction of the second needle part in the region coupled to at least the second needle part in the 2-1 flow path of the punching injection needle, and at the boundary with the second needle part By providing an inclined portion having the same inner width as the inner diameter of the 2-2 flow path, when the shaping injection needle is inserted into the puncture needle, the needle portion of the shaping injection needle moves into the needle portion of the puncture needle (2-2 flow path). It can be inserted easily and quickly. As a result, it is possible to increase workability in the manufacturing process (combining process) of the composite injection needle, and to shorten the time required for the insertion process when inserting the shaping injection needle into the puncture injection needle during the procedure. can be greatly increased.

1 is a combined perspective view showing a first embodiment of a combination injection needle according to the present invention.
Fig. 2 is an exploded perspective view showing a first embodiment of a composite injection needle according to the present invention.
3 is a combined sectional view showing a first embodiment of a combination injection needle according to the present invention.
4 is a combined sectional view showing a second embodiment of a combination injection needle according to the present invention.
5 is a combined sectional view showing a third embodiment of a combination injection needle according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are combined perspective views and exploded perspective views showing a first embodiment of a composite injection needle according to the present invention.

1 and 2, the composite injection needle of the present invention may include a shaped injection needle 200 and a puncture injection needle 300.

The shaping injection needle 200 is used to insert fillers, lift threads, etc., or to inhale/extract fat, etc., in cosmetic procedures such as wrinkle improvement and lifting. can include

The first hub 210 has one side coupled and fixed to the barrel 100, which is a syringe body, and the other side to fix the first needle portion 220, and the rear side to the neck portion 110 formed at the front end of the barrel 100. Optionally coupled, the front is coupled and fixed to the first needle portion 220.

The first hub 210 may include a 1-1 flow path F11 communicating along the longitudinal direction. The rear of the 1-1 flow path F11 functions as a female connector, so that the neck portion 110 of the barrel 100, which functions as a male connector, can be internally coupled. The front of the 1-1 passage F11 functions as a female connector, so that the rear end of the first needle portion 220, which functions as a male connector, can be internally coupled. The 1-1 passage F11 may form a cylindrical passage having a circular cross section.

The first hub 210 can be firmly coupled with the neck portion 110 by forming a screw thread on an inclined portion or an inner surface of which the width (inner diameter) of the inner surface increases toward the rear, at least on the rear inner surface. In this case, the neck portion 110 may have an inclined portion or a screw thread on the outer surface of which the width (outer diameter) of the outer surface decreases in the protrusion direction, corresponding to the inclined portion or screw thread of the rear inner surface of the first hub 210.

The first hub 210 may be made of a plastic material or may be made of a material having some elasticity.

The first needle part 220 is used to inject filler (silicon, fat, etc.), lifting thread, etc. inside the barrel 100 into the skin, and one side (rear end) is coupled to the front of the first hub 210. And, the other side (front) can protrude forward.

The first needle unit 220 may include a first-second passage F12 communicating in the longitudinal direction. The rear of the 1-2 flow path F12 functions as a male connector and is inserted into and coupled to the front of the 1-1 flow path F11 of the first hub 210 functioning as a female connector, and the rear end of the 1-1 flow path ( F11) can be communicated with. A front of the 1-2 flow passage F12 may protrude forward. The first-second passage F12 may form a cylindrical passage having a circular cross section.

When the tip of the first needle part 220 penetrates the subcutaneous tissue, the tip T1 may be configured in a blunt (blunt) shape to prevent or minimize bruising and damage to blood vessels in the subcutaneous tissue. In this case, the tip is closed. and an opening (OP1) may be provided on the side of the front end.

The first needle part 220 may be made of metal, for example, stainless steel or titanium.

The puncture injection needle 300 forms (pierces) a hole in the skin so that the shaping injection needle 200 can be easily injected into the skin in the subsequent process of cosmetic surgery, and the second hub 310 and the second needle part (320) and the like.

The second hub 310 fixes and supports the second needle part 320 coupled to the front, the rear part selectively coupled to the outer surface of the first hub 210, and the front part to the second needle part 320. coupling can be fixed.

The second hub 310 may include a 2-1 passage F21 communicating along the longitudinal direction. The rear of the 2-1 flow path F21 functions as a female connector and can be coupled while embedding the outer surface of the first hub 210 that functions as a male connector. The front of the 2-1 flow path F21 functions as a female connector, so that the rear end of the second needle portion 320, which functions as a male connector, can be embedded and fixed. The 2-1 passage F21 may be formed as a cylindrical passage having a circular cross section or a tapered passage having an inner width (inner diameter) increasing toward the rear. The 2-1 flow path F21 may have a diameter substantially the same as the outer diameter of the first hub 210 so that the inner surface of the 2-1 flow path F21 closely adheres to the outer surface of the first hub 210 .

The second hub 310 may be made of a plastic material and may be made of a material having some elasticity.

The second needle part 320 is used to perforate, that is, to form a hole in the skin, and one side (rear end) may be coupled to the front of the second hub 310, and the other side (front) may protrude forward.

The second needle part 320 may form a 2-2 passage F22 communicating along the longitudinal direction. The rear of the 2-2 flow path F22 functions as a male connector and is inserted into and coupled to the front of the 2-1 flow path F21 of the second hub 310 functioning as a female connector, and the rear end of the 2-1 flow path ( F21) can be communicated with. The front of the 2-2 passage F22 may protrude forward. The 2-2 passage F22 may form a cylindrical passage having a circular cross section.

The second needle part 320 may have a tip T2 in a pointed shape to easily form a hole in the skin, and the opening OP2 may face forward.

The second needle part 320 forms a plurality of inclined surfaces having different inclination angles on the open end surface forming the tip opening OP2 in order to minimize the impact applied to the skin or patient pain when the tip T2 penetrates the skin. can do. It may be desirable to form more inclined surfaces, that is, to concentrate on the front protruding area that comes into contact with the skin first. In addition, it may be desirable to form a smaller inclined surface area in the front protruding region that first touches the skin of the plurality of inclined surfaces.

The second needle part 320 may form a length L protruding forward from the second hub 310 to 0.1 to 50 mm. If the protruding length is less than 0.1 mm, skin perforation may be incomplete depending on the treatment location (skin thickness), and if it exceeds 50 mm, the protruding length of the first needle portion 220 of the cosmetic injection needle 200 is insufficient, resulting in plastic surgery. can interfere As a result of application to actual procedures in plastic surgery, dermatology, etc., the preferred protruding length (L) was found to be 0.2 to 35 mm. Here, commercially available cosmetic injection needles 200 generally use a product in which the length of the first needle portion 220 is 3 to 70 mm, and in the case of a special procedure, the length of the first needle portion 220 is 150 mm or more. are also using

The material of the second needle part 320 may be made of metal, for example, stainless steel or titanium.

Although not shown in FIGS. 1 and 2, the syringe used in combination with the combined injection needle of the present invention is not particularly limited, and usually the syringe is a plunger (not shown) for extruding a filler or the like to the rear of the barrel 100, which is the syringe body. ), and a finger gripping portion (not shown) coupled to the outside of the plunger.

3 is a combined cross-sectional view showing a first embodiment of a combination injection needle according to the present invention.

As shown in (a) of FIG. 3, before the procedure, the piercing injection needle 300 may be coupled to the outside of the shaping injection needle 200 and stored. At this time, the inner surface of the second hub 310 of the piercing needle 300 may be fixed in close contact with the outer surface of the first hub 210 of the shaping injection needle 200.

The shaping needle 200 and the piercing needle 300 may be stored separately before the procedure (packaged product). In this case, the process of inserting the shaping needle 200 into the puncture needle 300 is required for the procedure. should be performed At this time, the second hub 310 of the puncture needle 300 forms an inclined portion S in the area coupled to the second needle portion 320 in the inner space, that is, in the 2-1 flow path F21, There, the inclined portion (S) is the same as the inner diameter of the second needle portion 320 at the boundary with the second needle portion 320 while the width (inner diameter) decreases continuously while going in the direction of the second needle portion 320. It has an inner width (inner diameter) of the same size, so that when inserting the first needle part 220 of the shaping injection needle 200 into the second needle part 320 of the puncturing injection needle 300, it can be easily inserted at once. . Also, during the procedure, the shaping injection needle 200 and the piercing needle 300 may be separated due to negligence or necessity of the procedure. When reunited, it can be reunited easily and quickly.

As shown in (b) and (c) of FIG. 3, the procedure is performed by separating the first procedure, the perforation procedure, and the second procedure, the plastic procedure. For the first procedure, as shown in (b), By moving the piercing needle 300 forward, the second needle portion 320 may protrude outward from the first needle portion 220 as shown in (c). Here, the second needle portion 320 may move along the outer surface of the first needle portion 220 while sliding in the longitudinal direction. A separation distance of 0.1 to 1.2 mm may be formed between the outer surface of the first needle part 220 and the inner surface of the second needle part 320 . If the separation distance is less than 0.1 mm, metal fragments may be generated due to friction between the first needle part 220 and the second needle part 320, and if the separation distance exceeds 1.2 mm, the commercially available molded injection needle 200 may be produced. The diameter of the second needle part 320 of the puncture needle 300 is too large compared to the diameter of the first needle part 220, which may not be desirable because it forms an unnecessarily large hole in the skin. As a result of application to actual procedures in plastic surgery, dermatology, etc., the preferred separation distance was 0.2 to 0.5 mm.

As shown in (c) of FIG. 3, when the second needle portion 320 protrudes outward from the first needle portion 220, the operator holds the syringe body, the barrel 100, with one hand and the other hand. As a puncture injection needle 300 can be used to form a puncture procedure, that is, a hole in the skin.

When the puncture procedure is completed, the puncture needle 300 may be retracted to tightly fix the puncture needle 300 to the outer surface of the shaping injection needle 200 as shown in (a). In this state, by inserting the first needle part 220 into the skin hole formed in the perforation procedure, the secondary procedure, that is, the cosmetic procedure may be continuously performed.

On the other hand, in the plastic surgery, before retracting the puncture needle 300, the first needle 220 is moved forward in the second needle 320 and inserted into the skin, and then the puncture needle 300 is removed. By retracting, as shown in (a), the piercing needle 300 may be tightly fixed to the outer surface of the shaping injection needle 200.

4 is a combined sectional view showing a second embodiment of a combination injection needle according to the present invention.

As shown in FIG. 4 , in the composite injection needle of the second embodiment, the first hub 210 of the shaping injection needle 200 may be longer than the second hub 310 of the puncture needle 300 . In this case, the entire inner surface of the second hub 310 is tightly coupled to a part of the outer surface of the first hub 210, and as a result, the second hub 310 is more easily and firmly coupled to the first hub 210. can do.

In addition, in the composite injection needle of the second embodiment, the plastic surgery can be performed while holding the first hub 210 instead of the temporarily coupled second hub 310, so that the plastic surgery can be performed more conveniently.

5 is a combined sectional view showing a third embodiment of a combination injection needle according to the present invention.

As shown in FIG. 5 , the composite injection needle of the third embodiment may have a coupling protrusion P on the outer surface of the first hub 210 of the shaping injection needle 200 . In this case, the inner surface of the second hub 310 of the piercing needle 300 may be provided with a coupling groove (R) selectively coupled to the coupling protrusion (P). The coupling protrusion P and the coupling groove R may have opposite shapes, that is, the coupling groove R may be formed on the outer surface of the first hub 210 and the coupling protrusion P may be formed on the inner surface of the second hub 310. .

In the composite injection needle of the third embodiment, the coupling protrusion P and the coupling groove R can couple the second hub 310 to the first hub 210 more firmly.

In the composite injection needle of the third embodiment, when the outer surfaces of the first and second hubs 210 and 310 have the same diameter, the coupling protrusions P and coupling grooves R continuously protrude or sink along the circumference in the form of a band. can be configured with

In the composite injection needle of the third embodiment, when the outer/inner surfaces of the first and second hubs 210 and 310 are level, the coupling protrusion P and the coupling groove R are continuous screw threads in the form of screws and nuts in the form of can also be configured.

In the above, the present invention has been described in terms of various examples, which are intended to illustrate the present invention. Those skilled in the art will be able to change or modify these embodiments in other forms. However, since the scope of the present invention is defined by the claims below, such variations or modifications may be construed as being included in the scope of the present invention.

100: barrel (barrel, syringe body) 110: neck part
200: molded injection needle 210: first hub
220: first needle unit 300: puncture injection needle
310: second hub 320: second needle part
F11, F12, F21, F22: 1-1, 1-2, 2-1, 2-2 Euro
OP1,OP2: opening P: coupling protrusion
R: coupling groove T1, T2: first and second tips
S: slope

Claims (5)

A first hub 210 having a 1-1 flow path selectively coupled to the neck portion formed at the front end of the barrel and communicating along the longitudinal direction, and coupled to the front of the first hub and extending in the longitudinal direction. a shaping injection needle (200) having a 1-2 flow path communicating with the 1-1 flow path and including a first needle portion 220 having a blunt tip; and
A second hub 310 having a second hub 310 with a rear inner surface selectively and closely coupled to the outer surface of the first hub and having a 2-1 passage communicating along the longitudinal direction, and coupled to the front of the second hub, but the first needle A second needle portion 320 having a longer inner diameter than the outer diameter of the first needle portion and having a sharp tip while forming a 2-2 flow path communicating with the 2-1 flow path, 1 including a perforated injection needle 300 that slides in the longitudinal direction along the outer surface of the needle part and the second needle part leads forward by a length of 0.2 to 35 mm from the second hub,
The width of the inner surface of the 2-1 passage continuously decreases in the direction of the second needle part at least in the area coupled to the second needle part, so that the inner diameter and the inner diameter of the 2-2 passage at the boundary with the second needle part Includes an inclined portion (S) having the same inner width,
The first hub is longer than the second hub, and the entire inner surface of the second hub is in close contact with a part of the outer surface of the first hub at an angle,
A separation distance of 0.2 to 0.5 mm is formed between the outer surface of the first needle part and the inner surface of the second needle part,
wherein a skin puncture procedure is first performed with the puncture needle, and then a cosmetic procedure is performed later with the shaping needle. delete delete delete delete

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