KR102473109B1 - Drug injection tip with a curved needle - Google Patents

Abstract

The present invention relates to a drug injection tip with a curved needle, which comprises: a cylinder; a plunger provided to be reciprocally movable in the cylinder; and the curved needle disposed on the plunger and having a curved portion in one area. The curved needle is inserted into and discharged from the skin by a reciprocating movement of the plunger to form an expanded hole in the skin, and a drug applied to the skin or a drug accommodated in the curved needle is injected into the expanded hole. The drug injection tip with a curved needle of the present invention has an effect of expanding the range of drug injection to the skin.

Description

Drug injection tip having a curved needle {DRUG INJECTION TIP WITH A CURVED NEEDLE}

The present invention relates to a drug injection tip having a curved needle.

Recently, drug injection tips for scar treatment, hair growth treatment, bronchospasm treatment, blood vessel treatment, fat reduction, wrinkle removal, skin elasticity recovery, sebum removal, and acne treatment have been developed.

The drug injection tip may treat the skin by repeatedly invading the skin with a plurality of needles to remove malignant tissues and form new tissues. Furthermore, the drug injection tip uses heat generated by the current applied from the handpiece to remove collagen and elastic fibers in the skin, promote new formation, and improve skin pigmentation, acne scars, and wrinkles. .

On the other hand, the drug injection tip is applied to the skin by insertion and discharge of a plurality of needles in order to relieve pain occurring in the skin and treat wounds occurring in the skin during the process of inserting and discharging a plurality of needles into the skin. A drug may be injected into the formed hole. In this case, in order to improve the efficacy of the drug, it is preferable to inject the drug into the skin as wide as possible.

However, the conventional drug injection tip has a problem in that the drug injection range of the hole formed in the skin is narrow as the diameter of the hole formed in the skin by the insertion and discharge of a plurality of needles is limited to the diameter of the needle.

Korean Patent Publication No. 10-2017-0014482 (2017.02.08.)

The present invention has been made to solve the above problems, and an object of the present invention is to expand the drug injection range of the skin by inserting and discharging a curved needle into the skin to form an expanded expansion hole in the skin and injecting the drug. It is to provide a drug injection tip having a flexible needle.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A drug injection tip having a curved needle according to an embodiment of the present invention includes a cylinder; a plunger provided to be reciprocally movable in the cylinder; and a curved needle disposed on the plunger and having a curved portion in one area, wherein the curved needle is inserted into and discharged from the skin according to the reciprocating movement of the plunger to form an expansion hole extending into the skin, The applied drug is injected into the expansion hole.

In addition, the bent portion may be formed to be inclined at a predetermined angle with respect to the central axis of the plunger.

In addition, the bent portion may be formed to be gradually spaced apart from a central axis of the plunger toward the plunger.

In addition, the curved portion may be formed to gradually approach toward a central axis of the plunger as it moves toward the plunger.

In addition, the curved portion may protrude curvedly.

In addition, the bent needle may include a tip extending parallel to the central axis of the plunger from the bent part.

In addition, the plunger may form a first space and a second space inside the cylinder, respectively, and the bent needle may be disposed in the second space.

In addition, a channel connecting the first space and the second space may be included.

In addition, when the plunger moves in a direction away from the skin, a positive pressure is formed in the second space, and the drug applied to the skin can be injected into the expansion hole.

In addition, when the plunger moves in a direction closer to the skin, a negative pressure is formed in the second space, and the skin can be sucked into the second space.

In addition, a channel check valve provided in the channel so that the gas or drug in the first space flows only into the second space; a drug storage unit for storing drugs to be supplied into the first space; and a drug check valve allowing the drug stored in the drug storage unit to flow only into the first space.

In addition, when the plunger moves in a direction closer to the skin, a positive pressure is formed in the second space so that the drug applied to the skin is injected into the expansion hole, and a negative pressure is formed in the first space to store the drug. The stored drug may be sucked into the first space through the drug check valve.

In addition, when the plunger moves in a direction away from the skin, a positive pressure is formed in the first space, so that the drug stored in the first space can be injected into the expansion hole via the channel check valve and the second space. .

Other specific details of the invention are included in the detailed description and drawings.

The drug injection tip having a curved needle according to an embodiment of the present invention is inserted into and discharged from the skin to form an extended hole in the skin to inject the drug, thereby extending the range of drug injection into the skin. .

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a cross-sectional view showing a state in which a drug injection tip having a curved needle according to an embodiment of the present invention is installed in a handpiece.
2 is a cross-sectional view showing a drug injection tip having a curved needle according to an embodiment of the present invention.
3 to 6 are cross-sectional views illustrating a process of injecting a drug into an expansion hole formed in the skin by inserting and ejecting a curved needle of a tip for drug injection having a curved needle according to an embodiment of the present invention.
7 is a cross-sectional view showing a drug injection tip having a curved needle according to another embodiment of the present invention.
8 is a cross-sectional view showing a drug injection tip having a curved needle according to another embodiment of the present invention.
9 is a cross-sectional view showing a drug injection tip having a curved needle according to a further embodiment of the present invention.
10 to 13 are cross-sectional views illustrating a process of injecting a drug into an expansion hole formed in the skin by inserting and ejecting a curved needle of a tip for drug injection having a curved needle according to an embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only these embodiments are intended to complete the disclosure of the present invention, and are common in the art to which the present invention belongs. It is provided to fully inform the person skilled in the art of the scope of the invention, and the invention is only defined by the scope of the claims.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings commonly understood by those skilled in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly specifically defined.

The spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a component's correlation with other components. Spatially relative terms should be understood as including different orientations of elements in use or operation in addition to the orientations shown in the drawings. For example, if you flip a component that is shown in a drawing, a component described as "below" or "beneath" another component will be placed "above" the other component. can Thus, the exemplary term “below” may include directions of both below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Prior to the description of the present invention, in various embodiments, components having the same configuration are typically described in the first embodiment using the same reference numerals, and in other embodiments, components different from the first embodiment are described. Let's explain.

In the direction display of the present invention, the upper side of the drawing is defined as the upper side, the lower side of the drawing is defined as the lower side, and the up and down direction of the drawing is defined as the up and down direction.

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

1 is a cross-sectional view showing a state in which a drug injection tip having a curved needle according to an embodiment of the present invention is installed in a handpiece, and FIG. 2 is a drug injection tip having a curved needle according to an embodiment of the present invention. cross section shown.

As shown in FIGS. 1 and 2 , a drug injection tip having a curved needle according to an embodiment of the present invention may be detachably coupled to the lower end of the handpiece.

The handpiece 10 may be used as a handle for a practitioner to grip. Specifically, in a state where the drug injection tip 100 is in contact with the pisisul's skin 30, the operator moves the handpiece 10, and the drug infusion tip 100 is applied to the pisisul's skin 30. It is possible to change the target area to be in contact with.

The handpiece 10 includes a drug 40 supply unit (not shown) for supplying the drug 40 to the curved needle 130 of the drug injection tip 100, and the curved needle 130 of the drug injection tip 100. ) A power supply (not shown) for selectively applying current may be provided. The drug 40 supply unit and the power supply unit may be controlled by a control unit to be described later.

The control unit is provided in the handpiece 10 and can control whether current is applied from the power supply unit to the bent needle 130 .

When the flexible needle 130 is inserted into the skin 30, the control unit supplies the drug 40 to the flexible needle 130 from the drug 40 supply unit or the power supply unit applies current to the flexible needle 130. You can control it.

In addition, when the flexible needle 130 is discharged from the skin 30, the control unit stops supplying the drug 40 to the flexible needle 130 from the drug 40 supply unit or the power supply unit stops supplying the drug 40 to the flexible needle 130. can be controlled to stop applying current.

The drug injection tip 100 having the curved needle 130 according to an embodiment of the present invention may include a cylinder 110, a plunger 120, and a curved needle 130.

Overall, the cylinder 110 accommodates the plunger 120 and the flexure needle 130 to be reciprocated, and the plunger 120 serves to reciprocate the flexure needle 130 in the up and down direction, and the flexure needle 130 ) Is inserted into and discharged from the skin 30 according to the up-and-down reciprocating movement of the plunger 120 and forms an expanded expansion hole 32 in the skin 30. In this way, the drug 40 may be injected into the expansion hole 32 formed in the skin 30 in the following manner. For example, the drug 40 previously applied to the skin 30 or the drug 40 accommodated in the curved needle 130 may be injected into the expansion hole 32 . Here, the drug 40 accommodated in the bent needle 130 may be the drug 40 supplied to the bend needle 130 from the drug 40 supply unit.

The cylinder 110 is a basic body of the present invention, and serves to accommodate the plunger 120 and the bent needle 130. The cylinder 110 may be detachably coupled to the lower end of the hand piece 10 .

The rod 20 of the actuator may pass through the upper surface of the cylinder 110, and the rod 20 of the actuator may be coupled with the plunger 120 accommodated in the cylinder, and the plunger 120 may move up and down. . Meanwhile, an O-ring 142 for a rod for airtightness with the rod 20 of the actuator may be provided on the upper surface of the cylinder 110 .

The lower surface of the cylinder 110 may be opened and in contact with the skin 30 .

The inside of the cylinder 110 may be partitioned into a first space 110a and a second space 110b by the plunger 120 . Here, the first space 110a is a space formed on the upper side of the plunger 120 inside the cylinder 110, and the second space 110b is formed on the lower side of the plunger 120 inside the cylinder 110. It can be in contact with the skin 30 in the space to be. Meanwhile, the bent needle 130 may be disposed in the second space 110b.

The plunger 120 is provided to be reciprocating in the vertical direction in the cylinder 110, and may form a first space 110a and a second space 110b inside the cylinder 110, respectively.

The plunger 120 may have a diameter corresponding to the cylinder 110 . Here, a cylinder O-ring 146 for airtightness may be provided between the plunger 120 and the cylinder 110 .

The plunger 120 may have a channel 122 connecting the first space 110a and the second space 110b. These channels 122 may be formed in plurality. Also, the channel 122 may be formed through the plunger 120 along the reciprocating direction of the plunger 120 .

Meanwhile, the first space 110a is a space formed between the top surface of the cylinder 110 and the plunger 120 inside the cylinder 110, and the second space 110b is a cylinder ( 110) may be a space formed between the lower surface and the plunger 120.

Therefore, when the plunger 120 moves downward, as the gas in the second space 110b moves to the first space 110a through the channel 122 and forms a negative pressure in the second space 110b, The skin 30 may be sucked into the second space 110b. Due to this, since the surface of the skin 30 sucked into the second space 110b becomes flat, the curved needle 130 can be easily inserted.

Here, moving the plunger 120 downward may be defined as moving in a direction closer to the skin 30 . Therefore, when the plunger 120 moves in a direction closer to the skin 30, a negative pressure is formed in the second space 110b, and the skin 30 is sucked into the second space 110b.

In addition, when the plunger 120 moves upward, as the gas in the first space 110a moves to the second space 110b through the channel 122 and forms a positive pressure in the second space 110b, The drug 40 applied to the skin 30 or the drug 40 accommodated in the curved needle 130 may be deeply injected into the expansion hole 32 .

Here, moving the plunger 120 downward may be defined as moving in a direction closer to the skin 30 . Therefore, when the plunger 120 moves away from the skin 30, positive pressure is formed in the second space 110b, and the drug 40 applied to the skin 30 is injected into the expansion hole 32. will be.

.

Bend needle 130 may be disposed on plunger 120 . Specifically, the bent needle 130 may be fixed to the holder 124 provided at the lower end of the plunger 120 . A fitting hole (not shown) into which the bent needle 130 is fitted may be formed in the holder 124 .

The bent needle 130 may have a bent portion 132 and a tip portion 134 .

The bent portion 132 may be formed in a curved shape in one region of the bent needle 130 .

For example, the bent part 132 may be formed to be inclined at a predetermined angle with respect to the central axis of the plunger 120. Specifically, the bent part 132 moves toward the plunger 120 from the central axis of the plunger 120. It may be formed to be gradually spaced apart.

The tip 134 may extend parallel to the central axis of the plunger 120 from the bent portion 132 . For example, tip 134 may have a sharp shape.

The operation of the bending needle 130 by the up-and-down reciprocating movement of the plunger 120 is as follows. When the plunger 120 moves downward, the bending needle 130 moves in the second space 110b of the cylinder 110. ) and protrudes into the skin 30 and can be inserted into the skin 30. At this time, when the tip 134 of the flexion needle 130 is inserted into the skin 30, a non-expanded invasion hole is formed in the skin 30, and then the bent portion 132 of the flexion needle 130 is formed in the skin 30. When the ) is inserted, an extended expansion hole 32 is formed in the skin 30. Here, the direction in which the expansion hole 32 is formed may be a radial direction.

Then, when the plunger 120 moves upward, the bent needle 130 is discharged from the skin 30 and the expansion hole 32 is exposed to the skin 30 . At this time, the drug 40 applied to the skin 30 or the drug 40 accommodated in the curved needle 130 may be injected into the expansion hole 32 .

As such, in the drug injection tip 100 having the curved needle 130 according to an embodiment of the present invention, the curved needle 130 is inserted into and discharged from the skin 30 according to the reciprocating movement of the plunger 120. An expansion hole 32 is formed in the skin 30, and the drug 40 applied to the skin 30 or the drug 40 accommodated in the curved needle 130 is injected into the expansion hole 32, whereby About it, it will be explained in detail.

3 to 6 are cross-sectional views illustrating a process of injecting a drug into an expansion hole formed in the skin by inserting and ejecting a curved needle of a tip for drug injection having a curved needle according to an embodiment of the present invention. For reference, the lower side of FIGS. 3 to 6 shows a skin surface into which a curved needle of a drug injection tip having a curved needle according to an embodiment of the present invention is inserted and discharged in a plan view.

The following process can be performed by the control unit and can be applied to other embodiments of the present invention and other embodiments of the present invention.

First, as shown in FIG. 3 , the plunger 120 moves downward while the cylinder 110 is in close contact with the skin 30 . At this time, the bending needle 130 protrudes from the second space 110b of the cylinder 110 to the skin 30, and the tip 134 of the bending needle 130 is inserted into the skin 30, and the skin 30 ) to form an invasion hole.

Next, as shown in FIG. 4 , the plunger 120 additionally moves downward. At this time, the curved portion 132 of the curved needle 130 is also inserted into the skin 30 to form an extended expansion hole 32 in the skin 30 .

As such, while the plunger 120 moves downward, the gas in the second space 110b moves to the first space 110a through the channel 122 while forming a negative pressure in the second space 110b. , The skin 30 may be sucked into the second space 110b of the cylinder 110. Due to this, since the surface of the skin 30 sucked into the second space 110b of the cylinder 110 becomes flat, the curved needle 130 can be easily inserted.

Subsequently, as shown in FIG. 5 , the plunger 120 moves upward while the cylinder 110 is in close contact with the skin 30 . At this time, the bent portion 132 of the curved needle 130 is discharged from the skin 30 and the expansion hole 32 formed in the skin 30 is partially exposed to the outside. The drug 40 applied to the skin 30 or the drug 40 accommodated in the curved needle 130 may be injected into the partially exposed expansion hole 32 .

After that, as shown in FIG. 6 , the plunger 120 additionally moves upward. At this time, the tip 134 of the curved needle 130 is also discharged from the skin 30 and the expansion hole 32 formed in the skin 30 is completely exposed to the outside. The drug 40 applied to the skin 30 or the drug 40 contained in the curved needle 130 may be injected into the fully exposed expansion hole 32 .

In this way, while the plunger 120 moves upward, the gas in the first space 110a of the cylinder 110 moves to the second space 110b through the channel 122 and enters the second space 110b. As the positive pressure is formed, the drug 40 applied to the skin 30 or the drug 40 accommodated in the curved needle 130 may be deeply injected into the expansion hole 32 .

7 is a cross-sectional view showing a drug injection tip having a curved needle according to another embodiment of the present invention.

As shown in FIG. 7 , in the drug injection tip having a bent needle according to another embodiment of the present invention, unlike one embodiment, the bent part 132′ is directed toward the plunger 120 toward the center of the plunger 120. It may have a form gradually approaching toward the axis line.

8 is a cross-sectional view showing a drug injection tip having a curved needle according to another embodiment of the present invention.

As shown in FIG. 8 , the drug injection tip having a curved needle according to another embodiment of the present invention may have a bent portion 132″ protruding curvedly, unlike one embodiment. That is, the curved portion 132 ``has an arc-shaped cross-sectional shape.

9 is a cross-sectional view showing a drug injection tip having a curved needle according to a further embodiment of the present invention.

As shown in FIG. 9, the drug injection tip having a bent needle according to an additional embodiment of the present invention, unlike one embodiment, includes a channel check valve 160, a drug reservoir 170, and a drug check valve 180 ) may further include.

The channel check valve 160 is provided in the channel 122 and serves to allow the gas or drug 40 in the first space 110a to flow only into the second space 110b. In other words, the channel check valve 160 serves as a one-way valve allowing gas in the first space 110a to flow only to the second space 110b.

The drug storage unit 170 serves to store the drug 40 to be supplied to the first space 110a. The drug storage unit 170 may be a drug solution tank in which drug solution is stored.

The drug check valve 180 serves to allow the drug 40 stored in the drug storage unit 170 to flow only into the first space 110a. In other words, the drug check valve 180 serves as a one-way valve that allows the drug 40 stored in the drug storage unit 170 to flow only into the first space 110a.

Therefore, in the present embodiment, when the plunger 120 moves in a direction closer to the skin 30, positive pressure is formed in the second space 110b so that the drug 40 applied to the skin 30 is applied to the expansion hole 32 ), and negative pressure is formed in the first space 110a so that the drug 40 stored in the drug storage unit 170 can be sucked into the first space 110a through the drug check valve 180.

In addition, in this embodiment, when the plunger 120 moves in a direction away from the skin 30, a positive pressure is formed in the first space 110a, so that the drug 40 stored in the first space 110a is channel check valve ( 160) and the second space 110b may be injected into the expansion hole 32.

That is, in the present embodiment, while the plunger 120 moves in a direction closer to the skin 30 or moves in a direction away from the skin 30, the drug 40 enters the expansion hole 32 formed in the skin 30. This is continuously injected, which will be described in detail.

10 to 13 are cross-sectional views illustrating a process of injecting a drug into an expansion hole formed in the skin by inserting and ejecting a curved needle of a tip for drug injection having a curved needle according to an embodiment of the present invention. The following process may be performed by the control unit.

First, as shown in FIGS. 10 to 11 , the plunger 120 moves downward while the cylinder 110 is in close contact with the skin 30 . As a result, the bending needle 130 protrudes from the second space 110b of the cylinder 110 to the skin 30, and the tip 134 and the bending part 132 of the bending needle 130 are formed on the skin 30. are sequentially inserted to form expansion holes 32 in the skin 30.

At this time, as the volume of the second space 110b decreases due to the downward movement of the plunger 120, positive pressure is formed in the second space 110b. As such, the drug 40 applied to the skin 30 may be injected into the expansion hole 32 by the positive pressure formed in the second space 110b.

At the same time, as the volume of the first space 110b increases due to the downward movement of the plunger 120, negative pressure is formed in the first space 110b. As such, the drug 40 stored in the drug storage unit 170 may be sucked into the first space 110a through the drug check valve 180 by the negative pressure formed in the first space 110b.

In this way, while the plunger 120 moves downward, since the pressure formed in the second space 110b is greater than the pressure formed in the first space 110b, the gas or drug in the second space 110b It may flow into the first space 110b through the channel 122, but this flow is blocked by the channel check valve 160, and the second space 110b is sealed.

Next, as shown in FIGS. 12 and 13 , the plunger 120 moves upward while the cylinder 110 is in close contact with the skin 30 . As a result, the curved portion 132 and the tip portion 134 of the curved needle 130 are sequentially discharged, and the expansion hole 32 formed in the skin 30 is exposed.

At this time, as the volume of the first space 110a decreases due to the upward movement of the plunger 120, positive pressure is formed in the first space 110a. In this way, the drug 40 stored in the first space 110a by the positive pressure formed in the first space 110a passes through the channel check valve 160 and the second space 110b to expand the formed skin 30. It can be injected into the hole 32.

At the same time, the volume of the second space 110b is increased by the upward movement of the plunger 120, but the drug flowing from the first space 110a through the channel check valve 160 into the second space 110b The positive pressure formed in the second space 110b is maintained. As a result, since the positive pressure is formed in the second space 110b, the drug flowing from the first space 110a through the channel check valve 160 into the second space 110b is injected into the expansion hole 32. It can.

In this way, while the plunger 120 moves upward, since the pressure formed in the first space 110a is greater than the pressure formed in the drug storage unit 170, the drug in the first space 110a flows through the channel ( 122) to the drug reservoir 170, but this flow is blocked by the drug check valve 180.

According to the present invention, the drug injection tip 100 having the curved needle 130 according to an embodiment of the present invention is inserted into and discharged into the skin 30 to form an expanded hole 32 in the skin 30. By forming and injecting the drug 40, there is an effect of expanding the injection range of the drug 40 in the skin 30. Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention Those skilled in the art will understand that the present invention may be embodied in other specific forms without changing its technical spirit or essential features. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

10: handpiece
20: load
30: skin
32: expansion hole
40: drugs
100: tip for drug injection
110: cylinder
110a: first space
110b: second space
120: plunger
122: channel
124: holder
130: bending needle
132, 132`, 132``: bending part
134: tip
142: O-ring for rod
146: cylinder o-ring
160: channel check valve
170: drug storage unit
180: drug check valve

Claims (13)

cylinder;
a plunger provided to be reciprocally movable in the cylinder and forming a first space and a second space inside the cylinder, respectively;
a curved needle disposed on the plunger, having a curved portion in one region, and disposed in the second space;
a channel connecting the first space and the second space;
a channel check valve provided in the channel to allow gas or drug in the first space to flow only into the second space;
a drug storage unit for storing drugs to be supplied into the first space; and
A drug check valve allowing the drug stored in the drug storage unit to flow only into the first space;
According to the reciprocating movement of the plunger, the curved needle is inserted into and discharged from the skin to form an expanded hole in the skin, and the drug applied to the skin is injected into the expanded hole.
According to claim 1,
The curved portion is formed to be inclined at a predetermined angle with respect to the central axis of the plunger, a drug injection tip having a curved needle.
According to claim 2,
The bent portion is formed to be gradually spaced apart from the central axis of the plunger toward the plunger, a tip for drug injection having a bent needle.
According to claim 2,
The curved portion is formed to gradually approach toward the central axis of the plunger toward the plunger, the tip for drug injection having a curved needle.
According to claim 2,
A drug injection tip having a curved needle, wherein the bent portion protrudes curvedly.
According to any one of claims 1 to 5,
The curved needle includes a tip portion extending parallel to the central axis of the plunger from the bent portion, wherein the tip for drug injection having a curved needle.
delete delete According to claim 1,
When the plunger moves in a direction away from the skin, a positive pressure is formed in the second space, and the drug applied to the skin is injected into the expansion hole.
According to claim 1,
When the plunger moves in a direction closer to the skin, a negative pressure is formed in the second space, and the skin is sucked into the second space.
delete According to claim 1,
When the plunger moves in a direction closer to the skin, a positive pressure is formed in the second space so that the drug applied to the skin is injected into the expansion hole, and a negative pressure is formed in the first space so that the drug stored in the drug storage unit is injected. A drug injection tip having a curved needle that is sucked into the first space through the drug check valve.
According to claim 1,
When the plunger moves in a direction away from the skin, a positive pressure is formed in the first space and the drug stored in the first space is injected into the expansion hole via the channel check valve and the second space. Tips for injecting drugs with

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