KR102626882B1 - Pressure sensitive automatic injection system - Google Patents

Abstract

The present invention relates to an automatic injection system. Specifically, the main control unit generates vacuum pressure by adjusting the amount of current of the vacuum motor through PWM control, and then adjusts the vacuum pressure to the vacuum pressure set by the administrator using the value sensed by Jin. The configuration is simple by maintaining the vacuum of the suction cap at a constant level, and the depth of skin contact can be precisely adjusted with accurate vacuum pressure using a vacuum regulator. By adjusting the pressure when injecting the drug, it is injected in two parts, so it can be administered to multiple layers of the skin. It relates to a pressure-sensitive automatic drug injection system that allows injection of drugs.

Description

Pressure sensitive automatic drug injection system {PRESSURE SENSITIVE AUTOMATIC INJECTION SYSTEM}

The present invention relates to an automatic injection system. Specifically, the main control unit generates vacuum pressure by adjusting the amount of current of the vacuum motor through PWM control, and then adjusts the vacuum pressure to the vacuum pressure set by the administrator using the value sensed by Jin. The configuration is simple by maintaining the vacuum of the suction cap at a constant level, and the depth of skin contact can be precisely adjusted with accurate vacuum pressure using a vacuum regulator. By adjusting the pressure when injecting the drug, it is injected in two parts, so it can be administered to multiple layers of the skin. It relates to a pressure-sensitive automatic drug injection system that allows injection of drugs.

In general, mesotherapy is a term coined by a French physician, Dr. In 1952. This treatment method developed by Pistor is now widely practiced around the world.

The treatment method is to inject a small amount of therapeutic drug into the skin layer and subcutaneous layer using a special injection device and a fine needle. The diseases that are subject to mesotherapy treatment are most acute and chronic pain, partial obesity, and cosmetic surgery. It increases blood and lymph circulation in the injected area, removes various pains, partial obesity, skin wrinkles, and improves skin aging. It prevents treatment and increases skin elasticity. The effect is immediate, there is no pain during treatment, and there are almost no side effects, so it has been widely used in recent years.

In these mesotherapy procedures, needle thickness, depth, angle, injection amount, and treatment area must be precisely controlled at your fingertips. In general, when the operator fills a prescribed drug into a disposable syringe and manually injects it into the treatment area one by one, not only is a lot of time consumed due to the long procedure, but the procedure is very uncomfortable due to excessive fatigue. Recently, A mesogun or injection gun is used as a means of automatically injecting drugs.

As an example of a conventional automatic drug injection device, domestically registered patent No. 10-1125732 is a semi-automatic drug injector with automatic control of injection speed by double pressure detection, pressure sensing automatic injection system is No. 10-1372403, and injection device is No. 10-152647. , No. 10-2071002, a suction pressure-controlled automatic injection device, and No. 10-1660457, an automatic injection control type automatic injection device using dual pressure sensors, etc. are posted.

The semi-automatic drug injector, which automatically adjusts the injection speed by double pressure detection, is a semi-automatic operation using an actuator that is driven in real time in conjunction with the user's pressing action to manual operation of the syringe used in the medical field to inject various drugs into the living body. By replacing the device, injection of the drug into the body can be performed stably and smoothly, and the back pressure generated by the resistance of the biological tissue to the injection of the drug along with the pressure of the user's operation button is simultaneously sensed and pressed in real time. It has the feature of controlling the injection speed of the drug in conjunction with pressure and counter-pressure, thereby achieving painless injection and preventing damage to the device.

The pressure-sensing automatic injection system detects suction pressure, and when the suction pressure rises above a certain level, the suction cap head of the suction needle adheres to the skin and automatically injects the drug, assuming that the needle tube has been inserted into the skin. Once completed, the system automates a series of procedures, including stopping the suction motor so that the suction needle is naturally separated from the skin, opening the solenoid valve to release the pressure on the suction cap, and sending a signal to the operator to move the suction needle to another treatment area. .

The injection device includes an injector consisting of a mounting portion on which a syringe is mounted, a needle assembly having a plurality of needles, and a motor and a screw that operate the piston of the syringe forward and backward; An injection device including a body that controls forward and backward operation of the syringe piston and drug injection is used, and a vacuum suction pressure is formed in the needle assembly in contact with the skin, and the detected vacuum suction pressure value is equal to the set suction pressure value. After determining whether the needle is in close contact with the skin, the procedure is performed so that the drug is injected through the needle. Once the procedure is completed, the needle assembly is spaced away from the skin to reduce the operator's fatigue and allow the injection of the prescribed amount of drug accurately. Vacuum suction pressure can be adjusted.

The suction pressure-adjustable automatic injection device detects the suction pressure during the procedure and adjusts the suction pressure step by step, so that the injection drug can be automatically and quickly injected with minimal skin irritation.

The automatic injection control type automatic injection device using the dual pressure sensor does not determine whether the needle is inserted into the skin through detection of suction pressure, but uses sensor signals from a contact sensor installed on the suction cap and a dual pressure sensor installed on the lead screw and plunger holder. By controlling the set drug amount to be automatically injected based on , automatic drug injection can be performed quickly and without drug loss.

However, since these conventional automatic drug injection devices use a pressure sensor and a solenoid valve to control pressure, the configuration becomes complicated, increasing manufacturing costs, and since the pressure is controlled using a vacuum pump and solenoid valve, the pressure is controlled using a vacuum pump and solenoid valve. Because the valve is controlled, it is impossible to accurately control the vacuum pressure. As a result, only one injection is possible through the needle, so there is a problem in that the treatment time increases due to multiple treatments.

Domestic Registered Patent No. 10-1125732 Domestic Registered Patent No. 10-1372403 Domestic Registered Patent No. 10-152647 Domestic Registered Patent No. 10-2071002 Domestic Registered Patent No. 10-1660457

The present invention is intended to solve the above problems. When the main control unit regulates the current amount of the vacuum motor through PWM control to generate vacuum pressure, the administrator sets the pressure using the value sensed from the air flow sensor in the vacuum regulator. The configuration is simple by maintaining the vacuum of the suction cap constant by adjusting it to one vacuum pressure, and using a vacuum regulator, the depth of skin contact can be precisely adjusted with the correct vacuum pressure, so the pressure is adjusted when injecting the drug and injected in two portions. Therefore, the purpose is to provide a pressure-sensitive automatic drug injection system that can inject drugs into multiple layers of the skin.

The features of the present invention for achieving the above object are,

an injector that applies vacuum pressure to a suction cap that is in close contact with the skin and, when the needle is inserted into the skin, advances the syringe using an actuator to inject the drug solution in the syringe into the skin; a vacuum motor that generates a reference vacuum pressure while adjusting the amount of current through PWM control according to external control; a vacuum regulator that provides the vacuum pressure generated from the vacuum motor to the suction cap through an air tube at a preset vacuum pressure according to external control; an air flow sensor connected to the air tube to measure the air flow rate moving through the air tube to check the vacuum state of the suction cap; And when the inside of the suction cap is in a vacuum state due to the vacuum pressure controlled by the vacuum regulator and comes into close contact with the skin, a microloper operates the injector to inject a preset injection amount of the drug in the syringe into the skin through the needle. It is characterized by including a control unit.

Here, the microcontrol unit determines that the suction cap is in close contact with the skin when the air flow rate value in the air flow rate sensor is “0”.

Here, the microcontrol unit continuously controls the vacuum regulator to maintain the preset vacuum pressure by detecting the air flow rate in real time through the air flow sensor when the chemical solution is injected.

Here, the microcontrol unit also adjusts the pressure of the vacuum regulator when injecting the drug, allowing for N injections to be divided into N times, allowing the drug to be injected into multiple layers of the skin.

Here again, when air leakage is confirmed from the suction cap through the air flow sensor, the microcontrol unit gradually increases the set vacuum pressure of the vacuum regulator.

Here again, when injection of the chemical solution is completed, the microcontrol unit releases the vacuum pressure of the vacuum regulator to remove the vacuum pressure of the suction cap to prevent the chemical solution from flowing into the skin while the needle is discharged from the skin. While moving the syringe backward, a vacuum pressure is generated within the syringe to suck the remaining drug solution into the syringe.

According to the pressure-sensing automatic drug injection system of the present invention configured as described above, when the main control unit regulates the current amount of the vacuum motor through PWM control to generate vacuum pressure, the vacuum regulator uses the value sensed by the air flow sensor to The configuration is simple by maintaining the vacuum of the suction cap constant by adjusting the vacuum pressure set by the administrator. Using a vacuum regulator, the depth of skin contact can be precisely adjusted with the correct vacuum pressure, so when injecting the drug, the pressure can be adjusted twice. Since the injection is divided into multiple layers, the drug can be injected into multiple layers of the skin, making it possible to perform the procedure quickly, thereby eliminating anxiety during treatment of the patient.

Figure 1 is a block diagram showing the configuration of a pressure-sensitive automatic drug injection system according to the present invention.
Figure 2 is an operational flowchart explaining the operation of the pressure-sensitive automatic drug injection system according to the present invention.

Hereinafter, the configuration of the pressure-sensitive automatic drug injection system according to the present invention will be described in detail with reference to the attached drawings.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. The terms described below are defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification.

Figure 1 is a block diagram showing the configuration of a pressure-sensitive automatic drug injection system according to the present invention.

Referring to Figure 1, the pressure-sensitive automatic drug injection system 1 according to the present invention includes an injector 10, a vacuum motor 20, a vacuum regulator 30, an air flow sensor 40, and a microcontrol unit. It consists of (50).

First, the injector 10 has a normal structure and applies vacuum pressure, that is, suction pressure, to the suction cap 11 that is in close contact with the skin. When the skin is pulled by the vacuum pressure and the needle 13 is inserted into the skin, the actuator 15 By advancing the syringe (17), the drug solution in the syringe (17) is injected into the skin.

In addition, the vacuum motor 20 continuously generates vacuum pressure while adjusting the amount of current through PWM control under the control of the microcontrol unit 50, which will be described below.

Additionally, the vacuum regulator 30 provides the vacuum pressure generated by the vacuum motor 20 to the suction cap 11 through the air tube 60 at a preset vacuum pressure under the control of the microcontrol unit 50.

For example, the vacuum regulator 30 sets the pressure in stages 1 to 10 according to the administrator's settings, such as 90 mmHg in stage 1, 100 mmHg in stage 2, 150 mmHg in stage 3, 200 mmHg in stage 4, It can be set to 250 mmHg in level 5, 300 mm Hg in level 6, 350 mm Hg in level 7, 400 mm Hg in level 8, 450 mm Hg in level 9, and 500 mm Hg in level 10.

In addition, the air flow sensor 40 is connected to the air tube 60 and measures the air flow rate moving through the air tube 60 to check the vacuum state of the suction cap 11.

Next, the microcontrol unit 50 operates the actuator 15 of the injector 10 when the inside of the suction cap 11 is brought into a vacuum state by the vacuum pressure controlled by the vacuum regulator 30 and comes in close contact with the skin. The chemical solution in the branch 17 is injected into the skin through the needle 13 in a preset injection amount.

If the air flow rate value in the air flow sensor 40 is "0", the microcontrol unit 50 determines that the suction cap 11 is in close contact with the skin.

The microcontrol unit 50 detects the air flow rate in real time through the air flow sensor 40 when the chemical solution is injected and continuously controls the vacuum regulator 30 to maintain the preset vacuum pressure. In other words, the microcontrol unit 50 can precisely adjust the depth of contact with the skin using the vacuum regulator 30 with accurate vacuum pressure. However, when using a vacuum pump and solenoid valve as in the past, accurate vacuum pressure adjustment is not possible, so a single injection is required. On the other hand, according to the present invention, N number of injections are possible when operating the needle 13 of the injector 10. That is, the microcontrol unit 50 precisely controls the vacuum regulator 30 to adjust the pressure when injecting the drug and injects it in two parts, making it possible to inject the drug into multiple layers of the skin. For example, the primary pressure can be adjusted to 150 mmHg to inject 0.5 cc of drug (needle penetration into the deepest skin depth), and the secondary pressure can be adjusted to 100 mm Hg to inject 0.5 cc of drug (needle penetration into a slightly lower skin depth). there is.

When air leakage is confirmed from the suction cap 11 through the air flow sensor 40, the microcontrol unit 50 gradually increases the set vacuum pressure of the vacuum regulator 30.

When the injection of the chemical solution is completed, the microcontrol unit 50 releases the vacuum pressure of the vacuum regulator 30 to remove the vacuum pressure of the suction cap 11, discharges the needle 13 from the skin, and discharges the chemical solution into the skin. By operating the actuator 15 to prevent flow, the syringe 17 is transported backward and a vacuum pressure is generated within the syringe 17 to suck the remaining chemical solution into the syringe 17.

Hereinafter, the operation of the pressure-sensitive automatic drug injection system according to the present invention will be described in detail with reference to the attached drawings.

Figure 2 is an operational flowchart explaining the operation of the pressure-sensitive automatic drug injection system according to the present invention.

Referring to FIG. 2, with the syringe 17 coupled to the injector 10 and the medical personnel holding the suction cap 11 in close contact with the patient's skin, when the medical personnel operates the pedal or operation switch, the microcontrol unit (FIG. 50) quickly generates the actual vacuum pressure while adjusting the amount of current of the vacuum motor 20 through PWM control (S10).

When vacuum pressure is generated by the vacuum motor 20 and provided to the vacuum regulator 30, the vacuum regulator 30 adjusts the vacuum pressure generated by the vacuum motor 20 to a preset vacuum under the control of the microcontrol unit 50. Pressure is provided to the suction cap (11) through the air tube (60) (S20).

Then, the microcontrol unit 50 determines that the suction cap 11 is in close contact with the skin when the air flow rate value in the air flow rate sensor 40 is “0” (S30).

At this time, when vacuum pressure is generated in the suction cap 11, the patient's skin is pulled by the pressure and the needle 13 located inside the suction cap 11 is inserted into the skin.

When adhesion to the skin is confirmed, the actuator 15 of the injector 10 is operated to inject a preset amount of the chemical solution in the syringe 17 into the skin through the needle 13 (S40). At this time, the microcontrol unit 50 precisely controls the vacuum regulator 30 to adjust the pressure when injecting the drug and injects it in two parts, so the drug can be injected into multiple layers of the skin.

At the same time, the microcontrol unit 50 detects the air flow rate in real time through the air flow sensor 40 when the chemical solution is injected, and continuously controls the vacuum regulator 30 to maintain the preset vacuum pressure to prevent the sunshade cap 11 from touching the skin. It is continuously adhered to and maintains a vacuum state.

When the injection of the chemical solution by the preset injection amount is completed (S50), the microcontrol unit 50 releases the vacuum pressure of the vacuum regulator 30 to remove the vacuum pressure of the suction cap 11 and discharges the needle 13 from the skin. In this state, the actuator 15 is operated to prevent the drug from flowing to the skin, thereby transporting the syringe 17 backward and generating vacuum pressure within the syringe 17 to suck the remaining drug into the syringe 17. (S60).

Then, when performing a procedure on another part of the same patient, the microcontrol unit 50 repeats the above process.

The present invention can be modified in various ways and can take various forms, and in the detailed description of the invention, only special embodiments thereof have been described. However, it should be understood that the present invention is not limited to the particular form mentioned in the detailed description, but rather includes all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims. It has to be.

10: Injector 11: Suction cap
13: Needle 15: Actuator
17: Syringe 20: Vacuum motor
30: Vacuum regulator 40: Air flow sensor
50: Microcontrol unit 60: Air tube

Claims (6)

an injector that applies vacuum pressure to a suction cap that is in close contact with the skin and, when the needle is inserted into the skin, advances the syringe using an actuator to inject the drug solution in the syringe into the skin;
a vacuum motor that generates vacuum pressure while adjusting the amount of current through PWM control according to external control;
a vacuum regulator that provides the vacuum pressure generated from the vacuum motor to the suction cap through an air tube at a preset vacuum pressure according to external control;
an air flow sensor connected to the air tube to measure the air flow rate moving through the air tube to check the vacuum state of the suction cap; and
When the inside of the suction cap is in a vacuum state and comes in close contact with the skin due to the vacuum pressure controlled by the vacuum regulator, the microcontroller operates the injector to inject a preset injection amount of the drug in the syringe into the skin through the needle. A pressure-sensitive automatic drug injection system comprising a unit. According to claim 1,
The microcontrol unit is,
A pressure-sensing automatic drug injection system, characterized in that if the air flow rate value in the air flow rate sensor is “0”, it is determined that the suction cap is in close contact with the skin. According to claim 1,
The microcontrol unit is,
A pressure-sensing automatic drug injection system characterized in that the air flow rate is detected in real time through the air flow sensor when the drug solution is injected and the vacuum regulator is continuously controlled to maintain a preset vacuum pressure. According to claim 1,
The microcontrol unit is,
A pressure-sensitive automatic drug injection system that allows the drug to be injected into multiple layers of the skin by adjusting the pressure of the vacuum regulator when injecting the drug and dividing it into N injections. According to claim 1,
The microcontrol unit is,
A pressure-sensing automatic drug injection system, characterized in that when air leakage from the suction cap is confirmed through the air flow sensor, the set vacuum pressure of the vacuum regulator is gradually increased. According to claim 1,
The microcontrol unit is,
When the injection of the drug solution is completed, the vacuum pressure of the vacuum regulator is released to remove the vacuum pressure of the suction cap, and the needle is discharged from the skin while the syringe is transferred backward to prevent the drug from flowing into the skin. A pressure-sensitive automatic drug injection system that generates vacuum pressure within the syringe to inhale the remaining drug solution into the syringe.

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