WO2022114267A1

WO2022114267A1 - Automatic injection apparatus and control method therefor

Info

Publication number: WO2022114267A1
Application number: PCT/KR2020/016956
Authority: WO
Inventors: 염현철
Original assignee: 메디허브 주식회사
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2022-06-02

Abstract

The present invention relates to an automatic injection apparatus and a control method therefor, in which a single injection volume and injection speed are set in advance to control a motor at the set fixed quantity and speed, the pressure during injection is detected to automatically determine whether the injection is a normal injection, aspiration or automatic injection control can be performed by detecting ampoule installation and driving the motor only when the ampoule is installed normally, and information about the injection by automatic injection is output to an external device through wireless communication or a USB port to enable real-time injection information management. The present invention can prevent medical accidents and maximizes a patient's pain adaptability so that drug injection can be completed within a short procedure time, thus having the effect of minimizing the patient's pain or sensation felt due to the presence of a foreign body.

Description

Automatic injection device and its control method

The present invention relates to an automatic injection device and a method for controlling the same. More specifically, an automatic injection device that automatically determines whether the self-injection point is normal by detecting the injection pressure and automatically determines the self-injection point by detecting the injection pressure so that automatic injection can be controlled at a fixed and constant speed; By installing a communication module and USB output unit in the device to output the injection information in real time, it is possible to output the injection information in real time so that an external device can manage the patient's injection information and injection information. It relates to a control method of an automatic injection device capable of controlling aspiration or automatic injection by driving a motor only when it is installed.

The drug auto-injector is a device designed to allow a user to inject a predetermined amount of a drug into a subcutaneous tissue or a muscle.

A general auto-injector is equipped with an ampoule containing a drug for treatment or an anesthetic component inside a case having a cartridge inside. The ampoule is configured to be connected to a needle or needle assembly.

Korean Patent Laid-Open No. 10-2007-0069261 discloses a prior art auto-injector, which is provided with an ampoule conveying means and a piston conveying means, and controls the ampoule conveying means and the piston conveying means by a control unit, respectively, of the main body. It is configured to control and display the operating state on the back side. According to this configuration, the drug component is injected into the patient's body by moving with a predetermined pressure with a needle mounted at the end.

However, since the autoinjector of the prior art as described above is dualized into the ampoule transfer and the piston transfer, two motor driving means are required, and only the injector itself is provided with a status display device. Information must be manually entered and managed using a computer, etc.

In particular, recently, such an auto-injector is used as an anesthetic injection for dental use. When the speed of injecting anesthetic solution into the patient's affected area increases, the patient feels pain due to the pressure on the affected area. There is a problem in that the discomfort caused by a foreign body feeling of the patient increases.

In order to solve this problem, the recent autoinjector proposes a concept of adjusting the operation of the actuator in two stages or in multiple stages. In this case, it is possible to reduce pain during drug injection by injecting into the affected part of the patient through a pre-programmed step in the control unit.

However, even in this case, there is a limitation in reducing the pain of the patient, and since each patient has a different pain adaptability, there is a problem in that it cannot respond flexibly.

In addition, according to the prior art, in order not to inject the anesthetic through the blood vessel, it is determined whether blood enters the cartridge in the ampoule by retracting the plunger after stabbing the ampoule, which is not easy to find the correct insertion point there was

Even if the insertion point is found in the aspiration test, the insertion point may be shifted due to movement or pressure during injection. Problems that can cause great pain or medical accidents occur.

In addition, in the case of the prior art, since the administrator directly reads the injection information of the automatic injection device or manually inputs and manages the set content information for each patient, there is a risk that an error may occur if the injection information of the automatic injection device cannot be accurately entered in real time. In addition, there is a risk that an error may occur if the injection information of the automatic injection device cannot be accurately input in real time because the administrator directly reads the injection information of the automatic injection device or manually enters and manages the set content information for each patient.

In addition, since automatic injection can be controlled regardless of whether the ampoule is installed or not and the remaining injection solution, problems such as malfunction or self-injection without the ampoule may occur.

In order to solve the above problem, an object of the present invention is to provide an automatic injection device that detects an injection pressure during automatic injection and automatically determines whether it is a normal injection.

In addition, the present invention enables real-time injection information management by outputting injection information by automatic injection to an external device through wireless communication or USB port, and by detecting whether or not the ampoule is installed and driving the motor only when the ampoule is normally installed, An object of the present invention is to provide a control method of an automatic injection device that enables inspiration or automatic injection control.

In order to achieve the above object, the present invention is equipped with an ampoule holder on the tip of the auto-injector body, and includes a needle coupling part for coupling a needle to the tip of the ampoule holder, and the injection liquid ampoule is inserted and mounted in the ampoule holder, and the auto-injector body's It provides a control device, a motor and an automatic injection device provided with a transport device configured to move the sliding seal of the ampoule in the ampoule holder back and forth by the motor and a battery device for power supply. At this time, the control device includes a motor driving unit for rotating and driving the motor in a forward and reverse direction, a pressure detecting unit for detecting an injection pressure by detecting a driving load of the motor, controlling the charging of the battery, and applying the battery voltage to the injection device. A battery power supply unit for supplying driving voltage, a setting and display menu through the setting button of the display unit, a setting unit for setting the injection amount and injection rate at a time, and a setting unit for determining the input of the setting button to control the setting unit, start / Based on the input of the hold button, the aspiration button and the stop button, the injection control is performed by controlling the motor driving unit with the one-time injection capacity and injection speed set in the setting unit, and the self-injection point is determined by the detection information of the pressure detection unit and a control unit for controlling the automatic injection device while performing display control of the injection pressure and the injection speed.

In addition, the present invention provides a control method of an automatic injection device for transferring a plunger using a motor and automatically injecting a drug by pressing the plunger into an ampoule, the method comprising a short-range wireless communication means and a USB device for the automatic injection device a setting step of providing an output means and setting at least one of a display menu, a single injection dose, an injection rate, and an injection time based on an input of a setting button; an aspiration step for confirming a self-injection point by performing suction control by rotating the motor reversely for a predetermined time by inputting an aspiration button; It is determined whether the aspiration step has been executed, and if the aspiration step has not been executed, the execution of the aspiration step is displayed, and only after the aspiration step is executed, based on the input of the start/hold button an injection step of controlling the motor driving unit with a motor control value corresponding to the set capacity and speed to control the injection and display the injection speed or injection pressure; an injection rate varying step of varying the injection rate according to an additional input of the start/hold button in the injection step; a one-time injection completion step of judging whether one-time injection is complete according to whether the control of the motor control value corresponding to the one-time injection set capacity is completed, and stopping the motor when the one-time injection is completed; a pressure relieving step of generating a suction force based on a preset motor control value to relieve the pressure applied to the ampoule when the one-time injection is completed; In the automatic injection control, injection information including at least one of a single injection amount, injection speed, injection pressure, number of injections, injection time, battery state, and motor state information of the automatic injection device is stored, and the stored injection information is stored in the short range. The method further includes a scanning information output step of outputting real-time or stored scanning information to an external device through wireless communication or a USB output unit.

In addition, the present invention is a control method of an automatic injection device for automatically injecting a drug by pressurizing an ampoule through a transfer means using a motor. Ampoule detection step; a setting step of setting at least one of a display menu, a single injection dose, an injection rate, and an injection time based on an input of a setting button; When it is detected that the ampoule is normally mounted, an aspiration step for checking a self-injection point by performing suction control by reversely rotating the motor for a predetermined time by inputting an aspiration button; It is determined whether the aspiration step has been executed, and if the aspiration step has not been executed, the execution of the aspiration step is displayed, and only after the aspiration step is executed, based on the input of the start/hold button The injection step of controlling the injection control by controlling the motor driving unit with the motor control value corresponding to the set capacity and speed and displaying the injection speed or injection pressure, and the injection speed according to the additional input of the start/hold button in the injection step One-time injection is completed by judging whether one-time injection is complete according to the variable injection speed variable step of varying the injection speed, and whether the control of the motor control value corresponding to the one-time injection set capacity is completed, and stopping the motor when the one-time injection is completed and a pressure relief step of relieving the pressure applied to the ampoule by generating a suction force based on a preset motor control value when the one-time injection is completed, wherein the setting step consists of a display unit with a touch pad type display And, by controlling the control device, the control menu is provided on the screen of the display unit so that setting information can be entered by touching the screen, and the motor control value corresponding to the injection capacity and injection speed, and the injection speed or It is characterized in that it is set to display the injection pressure.

The automatic injection device according to the present invention can prevent medical accidents in advance, and maximize the patient's ability to adapt to pain, thereby minimizing the feeling of foreign body and pain in the patient by allowing the drug injection to be completed within a quick procedure time.

In addition, the control method of the automatic injection device according to the present invention can manage the injection information by automatic injection in real time, prevent the injection information management error for each patient, and detect the ampoule mounting to ensure that the ampoule is normally installed. There is an effect that can control aspiration or automatic injection by driving the motor only in this case.

1 is a perspective view of an automatic injection device of a first embodiment according to the present invention.

Figure 2 is a side cross-sectional configuration example of the automatic injection device of the first embodiment according to the present invention.

3 is a block diagram of the control device of the automatic injection device according to the present invention;

Figure 4 is a control flow chart of the automatic injection device according to an embodiment of the present invention.

Hereinafter, an automatic injection device of a preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

However, the embodiments described below are merely for explaining in detail enough that a person of ordinary skill in the art to which the present invention pertains can easily implement the invention, which limits the protection scope of the present invention. doesn't mean

In the following description, when a part is 'connected' to another part, it includes not only a case in which it is directly connected, but also a case in which another element or device is interposed therebetween. In addition, when a part 'includes' a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

Figure 1 is a perspective view of the automatic injection device of a first embodiment according to the present invention, Figure 2 is a side cross-sectional view of the configuration of the automatic injection device of the first embodiment according to the present invention.

The automatic injection device of the first embodiment according to the present invention is equipped with an ampoule holder 12 on the tip of the automatic injector body 11, and includes a needle coupling part for coupling a needle (injection needle) to the tip of the ampoule holder 12 do. The ampoule holder 12 is detachable, and the injection solution ampoule is inserted into the ampoule holder 12 and loaded.

Inside the autoinjector body 11, a control device 18, a motor 16, and a transport device 17, a battery device ( 19) is installed.

A start and hold button 14 is installed on the upper front surface of the autoinjector body 11, and a display and operation unit 15 is installed on the rear end upper surface. In addition, an aspiration button 14-1 for suction control is installed on one side of the body 11 and configured. In addition, a stop button not shown in the drawing is further included.

The display unit 15 includes a setting button, and the one-time injection dose setting displays a plurality of display bars, and the number of times to divide and inject the drug in one ampoule is selected by selecting the number of display bars. , set one injection dose, and setting the injection rate, display the display bar in multiple steps, set the injection rate by pressing the setting button to select the number of display bars corresponding to the injection rate, and the injection rate It is characterized in that the step control value of the motor corresponding to , and the motor driving speed control value corresponding to the injection speed are set.

In another method, the injection volume is displayed as a predetermined reference numerical value, and the one-time injection dose is set by changing the injection volume up and down through the setting button, and the injection rate is also performed by setting the predetermined reference injection rate up and down through the setting button. It is characterized in that the speed is set by varying the speed.

The automatic injection device 10 according to the first embodiment configured as described above inserts and mounts an ampoule for local anesthesia in the ampoule holder 12 . The ampoule for local anesthesia is an ampoule containing an injection solution of a predetermined volume, and the injection solution is charged inside a cylinder type, a sliding seal is installed at the rear end, and the sliding seal is transferred to inject the injection solution. The inserted ampoule is inserted and mounted in the ampoule holder 12 of the present invention, and a transfer device 17 driven by a motor is installed to transfer the sliding seal of the ampoule in the ampoule holder 12 .

After inserting the needle into the local anesthesia site, when the aspiration button 14-1 is pressed, the motor 16 reverses a predetermined step set by the program and the transfer device 17 moves backward to close the sliding seal of the ampoule. As it pulls to generate suction, check whether blood is sucked with the needle when it is inserted into the blood vessel.

Normal injection is judged by the blood suction state in the aspiration test. Press the start/hold button (14) to start the injection. At this time, the control device 18 controls the motor 15 at a constant step and a constant speed for the set fixed dose and constant speed injection to move the conveying device 17 as much as the fixed dose injection distance and controls the feeding at a constant speed.

At this time, the injection speed is displayed through the display unit (15). If it is desired to change the fast injection speed during normal injection, if the start and hold button 14 is additionally pressed during injection, the injection speed can be manually adjusted and controlled in response thereto.

For example, the injection is started by the button 14 input, and when the hold state is reached according to the button 14 input, the automatic injection mode is changed and injection is performed according to the preset drug injection amount and time. .

At this time, when it is determined that there is no pain in the affected area and there is a need to increase the drug injection speed, the mode is converted to a manual injection mode in conjunction with the input of the button 14, and the The injection amount and injection rate are changed.

The automatic injection device according to an embodiment of the present invention includes a display unit 15 disposed on one surface of the body to display a screen including a selection menu for a drug injection speed (SPEED). It is also possible to additionally display a selection menu related to the injection amount in addition to the injection speed on the display unit 15 .

In addition, according to the embodiment of the present invention, the body is provided with a setting button (15-1) for setting the injection amount of the drug on the outer surface.

Referring to FIG. 2 , the motor 16 is driven by direct interlocking with a driving control signal of the control device 18 in the automatic injection mode or a button input in the manual injection mode, thereby generating a rotational force of the screw.

The screw is formed in the longitudinal direction inside the body, and a thread is formed on its outer circumferential surface. A nut is coupled to one side of the screw, and the plunger coupled to the nut is reciprocated according to the rotation of the screw. Meanwhile, in FIG. 2 , the configuration for transferring the plunger may be configured to directly reciprocate the plunger using a linear motor.

The control device 18 controls the rotation amount and rotation speed of the motor 16 to control the transfer amount and transfer speed of the plunger, and through this, the injection amount and injection speed of the drug discharged through the needle of the needle unit 13 Controlled.

On the other hand, the inside of the ampoule holder 12 may be provided with a heating unit 12-1 that receives power from the battery device 19 and emits heat. For example, the heating unit 12-1 may be implemented as a coil or the like, and the heat generated by the heating unit 12-1 serves to increase the temperature of the injection solution in the ampoule mounted on the ampoule holder 12. .

As such, the temperature of the drug injected into the human body is increased by 20 to 30 degrees by the heat generating part 12-1, thereby minimizing discomfort due to the temperature difference during drug injection and relieving pain.

In addition, although not specifically shown, a syringe adapter (not shown) capable of mounting a disposable syringe may be detachably provided in the ampoule holder 12 . By providing a syringe adapter in this way, a disposable syringe can be mounted for each capacity of 10cc, 20cc, 30cc, etc., and automatic injection is possible using both an ampoule and a disposable syringe.

In addition, in the automatic injection device of the present invention, when a syringe adapter is provided in the ampoule holder 12, a disposable syringe is mounted on the syringe adapter, the dose of the drug to be injected is set in advance, and then the start and hold button 14 is pressed. When actuated, the plunger of the disposable syringe is retracted by the transfer device 17 . Therefore, it is possible to implement a function of automatically loading a drug by a preset dose into a disposable syringe.

3 is a block diagram of the control device of the automatic injection device according to the present invention.

The motor driving unit 112 for rotating the motor in the forward and reverse directions, the pressure detecting unit 114 for detecting the injection pressure by detecting the driving load of the motor 16, and the transfer position of the plunger reciprocated by the motor The transfer position detection unit 116 for detecting, the ampoule mounting detection unit 118 for detecting whether the ampoule is normally mounted in the ampoule holder 12, and controlling the charging of the battery and supplying the battery voltage as the driving voltage of the injection device a battery power supply unit 122 to, a setting and display menu through the setting button 15-1 of the display unit 15, a setting unit 124 for setting a single injection amount and an injection rate, and the A communication module 126 and a USB output unit 128 for outputting management information to an external device, and determining the input of the setting button 15-1 to control the setting unit 124, and a start/hold button (14), on the basis of the input of the aspiration button 14-1 and the stop button 14-2, the motor driving unit 112 is controlled with the one-time injection capacity and injection speed set in the setting unit 124 to control the injection, and to determine the injection point and the completion of injection based on the detection information of the pressure detection unit 114, the transfer position detection unit 116, and the ampoule mounting detection unit 118, and control the display control and the injection device. It is configured to include a control unit 110 for controlling the output of the scan information to an external device.

The control unit of the control device determines the replacement time of the ampoule based on the position detection information detected by the transfer position detection unit, and grasps the volume of the injection solution remaining in the ampoule. It may be configured to limit automatic infusion start as well as notification of insufficient dose.

The control apparatus of the injection device according to the present invention configured as described above includes a setting button 15-1 on the display unit 15, and the setting unit 124 sets control information. Although shown as a single button in the drawings, the present invention is not limited thereto, and a plurality of buttons are provided to control menu selection and information selection and setting in the corresponding menu.

As another method, the display unit 15 may be configured as a touch pad type display to provide a menu on the screen so that setting information can be input by touching the screen. As a basic setting, one injection volume can be set, the injection rate can be set, and the injection speed or injection pressure can be selected as display information.

As an example of the capacity setting method, a plurality of display bars are formed, and the display bars can be additionally selected one by one by pressing the setting button. It is provided with four display bars and when pressed once, one display bar is selected and cycled in such a way that the display bar is selected according to the number of times of pressing.

This is a method in which one indication bar selects a dose for injecting one ampoule in 4 divided doses, and two indication bars select injection in 2 divided doses when selecting a dose. Similarly, the injection rate is also provided with a plurality of display bars, and the injection rate can be selected in a plurality of stages by cycling the speed bars one by one according to the number of pressing of the setting button.

This is not a method of selecting a set stage for dose and speed, but allowing fine adjustment as needed by up-down of the reference value. to be able to set it.

On the other hand, the display and setting method as described above can be used in the case of a fixed panel, can be configured as a touch panel display, and display a display menu, a setting menu, and various control menus by the control of the control unit, and display the menu It can be implemented by touching to set.

The pressure detection unit 114 detects the load amount of the motor driving unit 112 and detects it as the injection pressure. The transfer position detection unit 116 detects the position of the plunger to control whether the initial position, the injection amount, or the injection end. The ampoule mounting detection unit 118 is for detecting whether automatic injection is ready by mounting the ampoule in the ampoule holder.

The communication module 126 and the USB output unit 128 outputs information such as the number of injections, such as the number of injections, the injection amount, the injection time, etc. through short-range wireless communication (eg, Wi-Fi, Bluetooth, ..), or through a USB port. to output. In addition, by outputting the battery state information or the motor state information, it is possible to check whether the battery needs to be charged and whether the motor is operating normally from an external device. The injection information output in this way is transmitted to a smartphone, PC, or tablet on which the application is installed so that it can be managed as injection history information for each patient.

Therefore, in the prior art, injection information for each patient has to be manually input, but using the present invention, injection information can be automatically entered into an application and managed, and the consumption amount of injection ampoules, types of injections, etc. can be managed.

In the present invention, the control unit 110 controls each of the

detection units

114, 116, and 118 to receive detection information, determines the input information of the buttons 15-1, 14, 14-1, and sets information and , display, injection control, and output control are performed.

As described above, the present invention can automatically determine and control the start and ampoule replacement by ampoule detection and transfer position detection. , Automatic injection may not be started or indicated and notified when there is less than a single injection dose remaining.

That is, since the ampoule is manufactured in a quantitative manner, the end position can be known when the transfer position is detected. In addition, the remaining injection dose can be grasped by the current location information, so that when it is insufficient than the one injection dose, it is possible to notify this and limit the automatic injection not to start.

4 is a control flowchart of an automatic injection device according to an embodiment of the present invention.

When the power is turned on, the ampoule detection step (S10) of detecting whether the ampoule is installed or not through the ampoule loading detection sensor, and at least one of a display menu, one injection volume, injection speed, and injection time based on the input of the setting button A setting step (S20) of setting an abnormality, an aspiration step (S30) for confirming the self-injection point by performing suction control by reversely rotating the motor for a predetermined time by inputting the aspiration button, and input of the start/hold button The injection is controlled by controlling the motor driving unit with the motor control value corresponding to the capacity and speed set based on the setting, and the injection speed or injection pressure is displayed in the injection step (S40), and in the injection step (S40), it is detected through the pressure detector. It is determined whether the injected pressure is within the preset normal range of pressure, and when it is out of the normal range, the motor is stopped and the pressure determination step (S50) of outputting an alarm sound, and the injection step (S40) starts / The injection speed variable step (S60) of varying the injection speed according to the additional input of the hold button, and it is determined whether one injection is complete based on the detection of the one-time injection set capacity or the transfer position, and when the one-time injection is completed, the motor The one-time injection completion step (S70) of stopping the It characterized in that it comprises an initialization step (S80) of reversing the motor to reverse the plunger to the initial position.

It characterized in that it further comprises a pressure relief step of relieving the injection pressure by a predetermined reverse rotation control at the time of completion of the injection in the one-time injection completion step (S70).

In addition, in the one-time injection end and amble replacement determination step of the injection step, each scan information is stored. The stored scan information outputs real-time or stored scan information to an external device through short-range wireless communication or a USB output unit.

The external device may be a digital device such as a smartphone, PC, or tablet. Typically, it may be a PC installed with an application for patient management of a hospital, and the PC can store injection information for each patient and analyze and manage it as patient information. In addition, by counting the number of times of ampoule replacement, it is possible to grasp the amount of use for each ampoule in the hospital, and to manage consumables such as disposable needles.

In the method of controlling the injection device of the present invention configured as described above, the user inserts and mounts the ampoule loaded with the injection solution into the ampoule holder 12 . Accordingly, the transfer device 17 driven by the motor 16 can control the automatic injection by transferring the ampoule sliding shield forward and backward.

When the power is turned on, the injection device detects whether the ampoule is mounted on the ampoule holder 12 from the ampoule mounting detection unit 118 (S10). If the ampoule is mounted normally, the display menu of the display unit 15 and the setting for one injection volume and injection speed are made. This may be set by input of a setting button, or a preset setting value may be checked. Here, after the power is turned on, the setting menu can be checked before the ampoule mounting is detected, and the setting can be set by first manipulating the setting.

The setting unit 124 sets a display menu displayed on the display unit 15 . The setting method may select a display menu by a predetermined program, such as a setting mode, an injection speed display mode, an injection pressure display mode, etc. by input of the setting button (15-1).

In the setting mode, it is possible to set one injection volume, injection speed, or control information required for automatic control. The display mode can be displayed by selecting the injection speed or injection volume.

After the ampoule installation is confirmed and the set values are set, the injection needle is inserted. After inserting the needle, the aspiration control is performed by inputting the aspiration button (S30). This is to check whether the injection needle is inserted into the blood vessel before the initial injection of the injection solution. Suction control is performed by rotating the motor in reverse. Check if blood is aspirated by reverse control.

In addition, it is determined whether the aspiration step (S30) has been executed, and if the aspiration step is not executed, it is displayed to execute the aspiration step, and only after the aspiration step is executed, start/hold It is also possible to control to enter the injection stage according to the input of the button. Of course, if scanning is started by the start button without executing the aspiration step, it is necessary to determine whether the injection is normally performed by judging the insertion point by pressure detection.

In the case of a normal magnetic particle in the aspiration control (S30), the injection is started. To start scanning, a motor is driven with a motor control value corresponding to a preset dose for one injection. By driving the motor, the transfer device advances the ampoule sliding shield and injects the injection solution. At this time, it is automatically controlled as much as the one-time dose control value. In addition, the motor driving speed is controlled at the initially set speed. In addition, the injection pressure or injection speed is displayed according to the selected display mode. Of course, it is also possible to display the injection pressure and the injection rate together.

In the injection control step of injecting the injection solution, the injection pressure is determined (S50). The injection pressure may be determined as the injection pressure by detecting the load amount of the motor. As another method, a pressure sensor may be installed in a portion for transferring the ampoule sliding shield to measure the pressure pushing the sliding shield. In this way, by measuring the injection pressure, display control is performed, and the pressure is compared with the preset normal range pressure.

When the needle in the blood vessel is inserted in the autoinjector, the pressure drops significantly than the normal drug injection pressure, so it is possible to detect a pressure significantly lower than the normal injection pressure and provide a beep notification function to provide a medical accident prevention function.

In addition, when injecting a drug into the body through a needle from an auto-injector, when the pressure approaches 15PSI, which is higher than the normal drug injection pressure, a strong pressure injected into the nerve is generated. can provide a function to prevent medical accidents.

Meanwhile, during the injection control, the injection speed or injection amount may be varied by additionally inputting the start/hold button (S60). If the start button is additionally inputted while performing automatic injection in the hold mode at a preset dose and speed, the injection speed can be varied, and the hold state can be controlled after the injection speed is varied.

In addition, by additionally inputting the start/hold button during injection control, the automatic control mode is converted to the manual control mode, and in the manual control mode, the injection solution injection is continued for the holding time by keeping the start/hold button pressed. The injection amount can be controlled by manual operation. This mode conversion automatically displays the mode conversion status on the display and selectively displays the injection volume, injection pressure, injection time, injection speed, etc., so that the doctor can precisely manipulate the patient while checking the digitized values.

For example, if the start button is pressed once, the initially set one-time injection capacity and the set injection rate are held and controlled. If the start button is additionally pressed in the hold state, the injection speed is increased by one preset level. Here, the injection speed step is set in advance on the program to control the speed added step by step. The reason for the need to increase the speed is that the speed can be increased for fast injection when the injection is normally started and the patient does not feel pain.

In addition, if the start/hold button is pressed in the hold state for a certain period of time or longer, the injection dose control is automatically converted to manual control, and when the start/hold button is released, the injection control is terminated. This can be used to manually control the injection volume.

As described above, during automatic injection control, one injection is completed according to the motor control value corresponding to the one-time injection set capacity or the transfer position (S70). It sets the control value of the stepper motor in response to the one-time injection capacity, and after starting injection, drives only the corresponding motor control value and then stops. Alternatively, the single injection volume may be controlled by detecting the transfer position.

After the one-time injection is completed as described above, it returns to the injection control step (S40) and repeats the injection for the single injection dose.

At this time, when the injection needle is withdrawn in that state at the completion of one-time injection, the injection solution leaks due to the pressurized pressure. Therefore, in the present invention, the motor is reversely rotated with a preset reverse control value at the completion of one injection to release the pressurized pressure. Therefore, the injection needle is withdrawn in a state where the pressure is released to prevent leakage of the injection solution.

Thereafter, the ampoule replacement timing is determined by detecting the transfer position to determine the ampoule replacement timing. Alternatively, if the number of divided injections per one ampoule is set in the setting mode, the number of injections per dose is determined to determine the ampoule replacement time. If it is determined as the ampoule replacement time, the motor is reversely rotated to initialize to the initial position (S80).

Therefore, it is possible to grasp the amount of injection solution remaining in the ampoule by detecting the transfer position, and by using this, it is possible to limit automatic injection by notifying this when there is less than one injection dose.

In addition, the remaining capacity, ie, the remaining number of scans, may be determined and displayed on the display unit based on the transfer position detection information when one injection is completed or the motor is stopped. In other words, if the dose is set by dividing the ampoule and injecting it when it is in the initial position, divide the number of divisions from the initial position to the end position, calculate the remaining number of injections based on the current position detection information, and display it on the display can do. By displaying the number of possible injections remaining, it is possible to know the number of injections possible without visually checking the injection solution in the ampoule.

In the above, the present invention has been described in detail based on the embodiments and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the following claims.

Claims

The ampoule holder 12 is mounted on the tip of the autoinjector body 11, and it includes a needle coupling part for coupling the needle to the tip of the ampoule holder 12, and the injection ampoule is inserted and mounted in the ampoule holder 12, and the autoinjector Inside the body 11, a control device 18, a motor 16 and a transport device 17 configured to move the sliding seal of the ampoule in the ampoule holder 12 forward and backward by the motor and a power supply are provided. In the automatic injection device installed with a battery device 19 for

The control device 18,

A motor driving unit 112 for rotating the motor in the forward and reverse directions, and

a pressure detection unit 114 for detecting an injection pressure by detecting the driving load of the motor 16;

A battery power supply unit 122 for controlling the charging of the battery and supplying the battery voltage as a driving voltage of the injection device;

A setting unit 124 for setting a setting and display menu, a one-time injection amount and an injection speed through the setting button 15-1 of the display unit 15;

The input of the setting button 15-1 is determined to control the setting unit 124, and the input of the start/hold button 14, the aspiration button 14-1 and the stop button 14-2 is performed. Based on the one-time injection capacity and injection speed set in the setting unit 124, the injection control is performed by controlling the motor driving unit 112, and the self-injection point is determined by the detection information of the pressure detection unit 114, and injection Automatic injection device, characterized in that it comprises a control unit 110 for controlling the automatic injection device while controlling the display of the pressure and injection speed.
The method according to claim 1,

In the control device,

The automatic injection device further comprising a transfer position detection unit 116 for detecting the transfer position of the plunger reciprocally transferred by the motor, and determining the automatic injection initial position and the injection completion position of one ampoule.
The method according to claim 1,

In the control device,

The automatic injection device, characterized in that it further comprises an ampoule mounting detection unit (118) for detecting whether the ampoule is normally mounted in the ampoule holder (12), and starts automatic injection control only when the ampoule is detected.
The method according to claim 1,

In the control device,

Further comprising a USB output unit 128 for outputting the scanning information and management information of the injection device to an external device,

Transmission of injection information including at least one of the amount of injection, injection speed, injection pressure, number of injections, injection time, battery state, and motor state information of the automatic injection device to an external digital device connected to the USB output unit 128 Automatic injection device, characterized in that.
The method according to claim 1,

In the control device,

Further comprising a communication module 126 for outputting the scanning information and management information of the injection device to an external device,

Transmitting injection information including at least one of the amount of injection, injection speed, injection pressure, number of injections, injection time, battery state, and motor state information of the automatic injection device to an external digital device paired with the communication module automatic injection device.
The method according to claim 1,

The control unit of the control device,

When the set single injection amount injection is completed, the automatic injection device, characterized in that it relieves the pressure applied to the ampoule by automatically controlling the reverse according to the preset motor control value.
The method according to claim 1,

The setting unit displays the injection dose as a predetermined reference numerical value, up-down through the setting button to change the one-time injection dose, and the injection rate by up-down the predetermined reference injection rate through the setting button to increase the injection rate Automatic injection device, characterized in that it is set variable.
The method according to claim 1,

Inside the ampoule holder

An automatic injection device, characterized in that it is provided with a heating unit for emitting heat by receiving power from the battery device (19).
The method according to claim 1,

In the ampoule holder,

An automatic injection device, characterized in that a syringe adapter to which a disposable syringe is mounted is detachably provided.
10. The method of claim 9,

The transfer device 17 is an automatic injection device, characterized in that it is provided to retract the plunger of the syringe mounted on the syringe adapter so that the drug is loaded into the syringe by a preset dose.
In the control method of an automatic injection device for automatically injecting a drug by transferring the plunger using a motor and pressing the ampoule by the plunger,

A short-range wireless communication means and a USB output means are provided in the automatic injection device,

a setting step (S20) of setting at least any one of a display menu, a single injection dose, an injection rate, and an injection time based on an input of a setting button;

an aspiration step (S30) for confirming a self-injection point by performing suction control by rotating the motor reversely for a predetermined time by inputting an aspiration button;

It is determined whether the aspiration step (S30) has been executed, and if the aspiration step is not executed, it is displayed to execute the aspiration step, and only after the aspiration step is executed, the start/hold button is pressed. an injection step (S40) of controlling injection by controlling the motor driving unit with a motor control value corresponding to the capacity and speed set based on the input and displaying the injection speed or injection pressure;

an injection rate varying step (S60) of varying the injection rate according to an additional input of the start/hold button in the injection step (S40);

a one-time injection completion step (S70) of judging whether one-time injection is complete according to whether the control of the motor control value corresponding to the one-time injection set capacity is completed, and stopping the motor when the one-time injection is completed;

a pressure relieving step of generating a suction force based on a preset motor control value to relieve the pressure applied to the ampoule when the one-time injection is completed;

In the case of the automatic injection control, injection information including at least one of the amount of injection, injection speed, injection pressure, number of injections, injection time, battery state, and motor state information of the automatic injection device is stored, and the stored injection information is stored in the short range. The method of controlling an automatic injection device further comprising a scanning information output step of outputting real-time or stored scanning information to an external device through wireless communication or a USB output unit.
12. The method of claim 11,

Repeating the one-time injection completion step from the injection step, determining the ampoule replacement based on the number of injections of the ampoule or detecting the transfer position, and reversing the motor to reverse the plunger to the initial position when the ampoule replacement time The control method of the automatic injection device, characterized in that it comprises an initialization step (S80).
12. The method of claim 11,

The automatic injection device further includes an ampoule-mounted detection sensor,

When the power is turned on, the method further includes an ampoule detection step (S10) of detecting whether the ampoule is mounted through the ampoule mounting detection sensor,

A control method of an automatic injection device, characterized in that the automatic injection start is controlled after the ampoule is normally mounted.
12. The method of claim 11,

The control device is

Further comprising a pressure detection unit for detecting the injection pressure by detecting the amount of driving load of the motor,

In the injection step (S40), it is determined whether the injection pressure detected through the pressure detection unit is within a preset normal range of pressure, and when it is out of the normal range, the motor is stopped and an alarm sound is output (S50). ) A control method of the automatic injection device, characterized in that it further comprises.
12. The method of claim 11,

The control device is

Based on the position detection information of the plunger detected by the transfer position detection unit, the time of ampoule replacement is determined, and the amount of injection solution remaining in the ampoule is identified, and when less than one injection volume remains, a single dose shortage is notified and In addition, the control method of the automatic injection device, characterized in that limiting the automatic injection start.
12. The method of claim 11,

The control device is

A control method of an automatic injection device, characterized in that the remaining number of injections is calculated and displayed on the display unit based on the plunger position detection information detected by the transfer position detection unit.
In the control method of an automatic injection device for automatically injecting a drug by pressurizing the ampoule through a transfer means using a motor,

When the power is on,

an ampoule detection step (S10) of detecting and displaying whether the ampoule is mounted through the ampoule mounting detection sensor;

a setting step (S20) of setting at least one of a display menu, a single injection dose, an injection rate, and an injection time based on an input of a setting button;

When it is detected that the ampoule is normally mounted, the motor is reversely rotated for a predetermined time by the input of the aspiration button to perform suction control to confirm the self-injection point (S30);

It is determined whether the aspiration step (S30) has been executed, and if the aspiration step is not executed, it is displayed to execute the aspiration step, and only after the aspiration step is executed, the start/hold button is pressed. An injection step (S40) of controlling injection by controlling the motor driving unit with a motor control value corresponding to the capacity and speed set based on the input and displaying the injection speed or injection pressure;

In the injection step (S40), the injection rate variable step (S60) of varying the injection rate according to the additional input of the start/hold button;

A one-time injection completion step (S70) of determining whether one-time injection is complete and stopping the motor when the one-time injection is completed depending on whether the control of the motor control value corresponding to the one-time injection set capacity is completed;

When the one-time injection is completed, the method further includes a pressure relieving step of generating a suction force based on a preset motor control value to relieve the pressure applied to the ampoule,

The setting step (S20) is,

The display unit is composed of a touch pad type display, and the control menu is provided on the screen of the display unit by the control of the control device so that setting information can be input by touching the screen,

A control method of an automatic injection device, characterized in that it is set to display the motor control value corresponding to the single injection capacity and the injection speed, and the injection speed or injection pressure as display information.
18. The method of claim 17,

Injection control is performed by controlling the motor with the motor control value corresponding to the set one-time injection capacity and injection speed by input of the start/hold button, but if the start/hold button is additionally input during injection control, A method for controlling an automatic injection device, characterized in that the injection speed is varied.
18. The method of claim 17,

A control method of an automatic injection device, characterized in that at the time when the one-time dose injection control is completed and the motor is stopped, a suction force is generated according to a preset reverse motor control value to relieve the pressure applied to the ampoule and stop the motor.
18. The method of claim 17,

Set the injection pressure range in the normal injection, not the experimentally obtained blood vessel or nerve injection,

In automatic injection control, the injection pressure is detected, and when the pressure is less than the set normal range, it is determined as blood vessel injection of the injection needle, and when the pressure is above the set normal range, it is determined as nerve injection, and each alarm is issued, and the motor is immediately stopped. Control method of automatic injection device.
18. The method of claim 17,

In the automatic injection device,

A touch panel display is installed as a display,

A control device controls and displays the display of the display unit, sets the single injection capacity and injection rate by digital values by user selection, and displays the injection pressure and the injection speed together in the injection mode Control method of automatic injection device.
18. The method of claim 17,

The control device is

A control method of an automatic injection device, characterized in that by detecting the position of the transfer device driven by the motor to transfer the sliding shield of the ampoule in the ampoule holder, the initial position and the end position of injection of the ampoule are detected.
18. The method of claim 17,

The control device is

Based on the position detection information of the plunger detected by the transfer position detection unit, the timing of ampoule replacement is decided, and the amount of injection remaining in the ampoule is identified, and when less than one injection volume remains, a single dose shortage is notified and In addition, the control method of the automatic injection device, characterized in that limiting the automatic injection start.
18. The method of claim 17,

The control device is

A control method of an automatic injection device, characterized in that the remaining number of injections is calculated and displayed on the display unit based on the plunger position detection information detected by the transfer position detection unit.