KR101903682B1 - Injector of Gas and Drug - Google Patents

Abstract

The present invention relates to a gas and drug injection device, and more particularly, to a gas and drug injection device including a drug injector, a gas injector, a catheter connected to the drug injector and the gas injector, and a needle installed at an outlet of the catheter. The catheter is provided with a first injection port connected to the drug injector to receive a drug, a second injection port connected to the gas injector to receive gas, and a drug infusion port communicating with the first injection port A partition wall for isolating the space from the gas inlet space communicating with the second inlet is installed across the inside so that it is not necessary to discard the remaining medicament inside the catheter prior to gas injection for gas injection, There is an effect.

Description

≪ Desc / Clms Page number 1 > Injector of Gas and Drug &

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas and drug injection device, and more particularly, to a gas and drug injection device capable of sequentially injecting a gas and a drug into skin to improve skin wrinkles and the like.

Mesotherapy, which is generally performed by injecting drugs into the skin, is a kind of injection therapy, which injects a small amount of a therapeutic drug into the skin layer and subcutaneous layer using a special injection device and a thin needle.

These mesotherapy procedures increase the blood circulation and lymphatic circulation at the injection site to remove various pain, partial obesity, and skin wrinkles, prevent skin aging, and have immediate effects and few pain and side effects during treatment. It is a tendency to be widely practiced.

However, the conventional mesotherapy is ineffective in terms of a procedure effect because it is a method of injecting only a drug into a treatment site. In order to improve this, an invention such as a patent application No. 10-2010-0101311 (registration number: 10-1180113, entitled "Gas and drug sequential injectable device in skin") has been proposed. There is a problem that the procedure is cumbersome because a needle for injecting gas is separately provided and a separate needle is attached to each of the injection needle and the gas injection needle.

Also, as shown in FIG. 1, a technique has been proposed in which a drug and a gas are flown through the same route to be injected into the skin, and this technique is applied to the same route in the same catheter just before the drug and gas are injected into the skin The needle is inserted at one point of the skin, the gas injection and the drug injection are sequentially performed, and then the needle is inserted at another point of the skin to inject the gas, the gas is completely discharged from the drug injection operation performed immediately before And discard the remaining drug in the catheter. Therefore, in order to inject gas at other points of the skin, an additional operation of discharging the residual drug is required, and expensive drugs are discarded, thereby causing a financial loss.

Patent No. 10-2010-0101311 (registration number: 10-1180113, entitled " Device for sequentially injecting gas and drugs into skin)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an apparatus and a method for separating a passage through which a gas flows and a passage through which a drug flows, And it is an object of the present invention to provide a gas and drug injection device which does not need to discard a small amount of drug remaining in the catheter for injecting gas.

It is also an object of the present invention to provide a gas and drug injection device capable of preventing the gas from flowing back toward the flow path of the drug.

According to an aspect of the present invention, there is provided a device for injecting a gas and a drug, the device including a drug injector, a gas injector, a catheter connected to the drug injector and the gas injector, and a needle provided at an outlet of the catheter ; The catheter is provided with a first injection port connected to the drug injector to receive a drug, a second injection port connected to the gas injector to receive gas, and a drug infusion port communicating with the first injection port And a partition wall separating the space from the gas inlet space communicating with the second injection port is installed across the inside.

Here, the catheter is provided on the inner front side of the drug inflow space with a check valve so as to be adjacent to the discharge port.

The check valve may be formed in a conical shape in which the diameter increases gradually from the front end where the drug is ejected to the outside, and the diameter gradually increases from the front end where the drug is ejected to the outside The surface adjacent to the partition may be formed in a plane.

Further, the thickness of the partition wall becomes gradually thicker toward the discharge port.

In addition, a flap made of a flexible material is provided at the front end of the partition wall to close the space between the end of the partition and the inner wall of the catheter in the drug inflow space, and the medicine stored in the drug inflow space is discharged through the discharge port , The space between the end of the partition and the inner wall of the catheter near the drug inflow space is opened.

In addition, the gas injector may include an injection body including an atmospheric tank storing a single injection amount of gas and connected to the second injection port; And a gas tank for supplying gas to the atmospheric tank of the injection main body.

In the gas and drug injector of the present invention configured as described above, since the passage through which the drug flows and the passage through which the gas flows are separated by the partition wall and the flow of the gas and the flow of the drug do not affect each other, There is no need to discard the drug remaining in the catheter prior to injection of the gas, which is advantageous in that expensive drugs can be saved.

In addition, there is an advantage that a check valve and a flap are provided on the side of the drug inflow space to prevent the gas from flowing back toward the drug inflow space.

Further, when the gas injection signal is applied by placing a standby tank in the injection main body of the gas injector, there is an advantage that the gas can be directly injected into the skin without delay.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a simplified view of a catheter for use in a gas and drug delivery device according to the prior art;
FIGS. 2A and 2B are views showing a first embodiment of a gas and drug injection device according to the present invention;
FIGS. 3A and 3B are views showing a second embodiment of a gas and drug injection device according to the present invention;
4A and 4B are views showing a third embodiment of a gas and drug injection device according to the present invention.
5A and 5B are views showing a fourth embodiment of a gas and drug injection device according to the present invention.
6A and 6B are views showing a fifth embodiment of a gas and drug injection device according to the present invention.
FIG. 7 is a simplified block diagram of a gas injector of a gas and drug injection device according to the present invention. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a gas and drug injection device according to the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 2A and 2B are views showing a first embodiment of the gas and drug injecting apparatus according to the present invention, FIGS. 3A and 3B are views showing a second embodiment of the gas and drug injecting apparatus according to the present invention, 4A and 4B are views showing a third embodiment of the gas and drug injection device according to the present invention.

5A and 5B are views showing a fourth embodiment of the gas and drug injecting apparatus according to the present invention. FIGS. 6A and 6B are views showing a fifth embodiment of the gas and drug injecting apparatus according to the present invention And FIG. 7 is a simplified block diagram of the gas injector of the gas and drug injector of the present invention.

The apparatus for injecting a gas and a drug according to the present invention comprises a drug injector 10, a gas injector 20, a catheter 30 connected to the drug injector 10 and the gas injector 20, A check valve 40 installed inside the catheter 30 and a needle 50 installed at the outlet 31 of the catheter 30.

The drug injector 10 is connected to the catheter 30 to supply the drug into the catheter 30.

The gas injector 20 is connected to the catheter 30 to supply the drug into the catheter 30.

The gas injector 20 includes an injection main body 21 and a gas tank 22 connected to the injection main body 21 as shown in FIG.

The injection main body 21 includes a standby tank 21a and a solenoid valve 21b for preventing the gas in the standby tank 21a from being sprayed or ejected, And a controller 21d for operating the solenoid valve 21b in accordance with the operation of the injection button 21c. In particular, the atmosphere tank 21a stores a positive gas injected into the skin once.

The gas tank 22 supplies gas to the atmospheric tank 21a of the injection main body 21. A standby tank 21a is provided in the injection main body 21 for receiving and storing the gas of a single injection amount from the gas tank 22. When the gas injection signal is applied through the operation of the injection button 21c, Gas is supplied to the inside of the skin immediately without delay. If there is no atmospheric tank 21a, a time delay occurs by the time the gas is moved from the gas tank 22 to the injection body 21 when a gas injection signal is applied. Therefore, the injection of gas into the skin will be delayed.

The catheter 30 is connected to the drug outlet of the drug injector 10 and the gas outlet of the gas injector 20 to receive the drug and the gas together. Since the catheter 30 is supplied with both the drug and the gas, a separate space for accommodating the drug and the gas, that is, the drug infusion space 32 and the gas inflow space 33 must be separately provided in the catheter 30, The medicament inflow space 32 and the gas inflow space 33 should be partitioned.

The catheter 30 as described above will be described in more detail.

The catheter 30 is provided with a first injection port 34 at one side, a second injection port 35 at the other side, and a partition wall 36 is installed in the inside of the catheter 30.

The first injection port (34) is connected to the drug injector (10) to receive a drug used for skin treatment.

The second injection port (35) is connected to the gas injector (20) to receive gas used for skin treatment.

The partition wall 36 is elongated along the longitudinal direction of the catheter 30, and the inner space of the catheter 30 is divided into two by the partition wall 36. One of the two spaces thus divided becomes the drug inflow space 32 and the other one becomes the gas inflow space 33. That is, the drug inflow space 32 and the gas inflow space 33 are isolated by the partition wall 36.

The drug infusion space 32 communicates with the first injection port 34 to receive a drug from the drug injector 10. The gas inflow space 33 communicates with the second injection port 35 and is connected to the gas injector 20 ). ≪ / RTI >

The general shape of the catheter 30 is made such that the rear portion has a constant diameter and the front portion is formed in a shape of decreasing diameter, and the diameter is made smallest at the discharge port 31 through which the drug and gas are ejected. The discharge port 31 having the smallest diameter is partitioned by the front end portion of the partition wall 36 so that the drug and gas can be ejected from the single discharge port 31 without being mixed with each other.

The check valve 40 is installed in the drug infusion space 32 of the catheter 30, in particular, in front of the drug infusion space 32 and adjacent to the discharge port 31. The check valve 40 is installed to prevent backflow of the gas.

That is, when the gas is injected into the skin through the needle 50 or discharged to the outside, when the pressure of the gas becomes equal to or higher than a certain pressure, the gas discharged from the gas inflow space 33 flows back into the drug inflow space 32 And mixed with the drug remaining in the drug inflow space 32. [ In order to prevent the gas from flowing back into the drug inflow space 32, the check valve 40 is installed as close as possible to the front side of the drug inflow space 32, that is, the discharge port 31 side.

Since the check valve 40 is intended to prevent backflow, it is preferable that the check valve 40 is formed in a form that can best implement its function. Accordingly, in the present invention, the shape of the check valve 40 is formed in a conical shape whose diameter gradually increases from the front end where the drug is ejected to the outside toward the rear. This makes it difficult for the gas to pass through the front end of the check valve 40 having a small diameter when it tries to flow back into the drug inflow space 32, so that the gas backflow into the drug inflow space 32 is suppressed.

The shape of the check valve 40 may be such that the diameter increases gradually toward the rear from the front end where the drug is ejected to the outside, and the surface adjacent to the partition wall 36 may be formed in a plane. With this configuration, the outer surface of the check valve 40 is in close contact with the inner surface of the catheter 30 forming the drug inflow space 32 and the partition wall 36, so that the backflow of the gas can be further effectively blocked There is an advantage in that the check valve 40 can be positioned closer to the discharge port 31. [ The fact that the check valve 40 is positioned close to the discharge port 31 means that the backflow prevention efficiency of the gas can be increased accordingly.

The backflow of the gas may be blocked by using the check valve 40 as described above, but the backflow of the gas may be blocked by modifying the shape of the partition 36 slightly.

That is, as shown in FIGS. 5A and 5B, the front portion of the partition wall 36 becomes thicker toward the discharge port 31, so that the front portion of the partition wall 36 on the drug inflow space 32 side The width of the gap between the end of the partition wall 36 and the discharge port 31 is narrowed by forming a certain angle with the other part of the partition wall 36. [ With this structure, the end portion of the partition wall 36 performs the same function as the check valve 40 to prevent backflow of the gas.

6A and 6B, a flexible flap 37 is provided at the front end of the partition wall 36 so that the front end of the partition wall 36 and the drug inflow space 32 When the drug stored in the drug inflow space 32 is discharged through the discharge port 31, the end of the partition wall 36 and the end of the catheter 30 on the side of the drug inflow space 32 are closed, It is also possible to open the space between the inner walls so that the medicament can be ejected through the outlet 31.

More specifically, one end of the flap 37, which is longer than the distance between the partition wall 36 and the inner wall of the catheter 30, is fixed to the partition wall 36. In this state, the flexible end flap 37 slightly bends, and the other end of the flap 37 is in close contact with the inner wall of the catheter 30 in this state. When the drug is sprayed in this state, the other end of the flap 37, which is in close contact with the inner wall of the catheter 30, is released by the pressure of the drug, and the drug is sprayed therebetween.

In addition, when gas is ejected in a state where the other end of the flap 37 is in close contact with the inner wall of the catheter 30, even if the gas ejected from the gas inflow space 33 tries to flow back toward the drug inflow space 32 Even if the other end of the flap 37 is pushed slightly toward the rear side, the state in which the flap 37 is in close contact with the inner wall of the catheter 30 remains unchanged, so that the gas can not flow toward the drug inflow space 32. Therefore, the back flow of the gas can be prevented by the flap 37. [

The needle 50 is installed at an outlet 31 of the catheter 30 to inject drugs and gas into the skin.

10: drug injector 20: gas injector
21: injection body 21a: atmospheric tank
21b: solenoid valve 21c: injection button
21d: Controller 22: Gas tank
30: catheter 31: outlet
32: Drug inflow space 33: Gas inflow space
34: first inlet port 35: second inlet port
36: partition wall 37: flap
40: check valve 50: needle

Claims (8)

A catheter 30 connected to the drug injector 10 and the gas injector 20 and a catheter 30 connected to the outlet 31 of the catheter 30, And a needle 50,
The catheter 30 includes a first injection port 34 connected to the drug injector 10 to receive a drug and a second injection port 35 connected to the gas injector 20 to receive a gas, A partition wall 36 separating a drug inflow space 32 communicating with the first inlet 34 and a gas inflow space 33 communicating with the second inlet 35 is formed in the lateral In addition,
A flexible flap 37 is provided at the front end of the partition wall 36 to seal the space between the front end of the partition wall 36 and the inner wall of the catheter 30 at the drug inflow space 32 When the medicine stored in the drug inflow space 32 is discharged through the discharge port 31, the front end of the partition wall 36 and the inner wall of the catheter 30 near the drug inflow space 32 are opened Gas and drug injection device.
The method according to claim 1,
Characterized in that the catheter (30) is provided with a check valve (40) inside the drug infusion space (32).
The method of claim 2,
Wherein the check valve (40) is installed on the front side of the drug infusion space (32) and is adjacent to the discharge port (31).
The method of claim 2,
Wherein the check valve (40) is formed in a conical shape in which the diameter gradually increases from the front end where the drug is ejected to the outside toward the rear side.
The method of claim 2,
Characterized in that the check valve (40) has a shape in which the diameter gradually increases toward the rear from the front end where the drug is ejected to the outside, and the surface adjacent to the partition (36) .
The method according to claim 1,
Wherein the partition wall (36) is gradually thickened toward the discharge port (31).
delete The method according to claim 1,
The gas injector (20) includes an injection body (21) including an atmosphere tank (21a) for storing a single injection amount of gas and connected to the second injection port (35);
And a gas tank (22) for supplying gas to the atmospheric tank (21a) of the injection body (21).

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