Chemical injection device

Abstract

The present invention provides a liquid medicine injection device that can be safely operated and delivers medicine accurately. It also relates to a liquid medicine injection device that minimizes battery consumption during manufacturing and / or distribution. The present invention also relates to a liquid medicine injection device that includes a first body to which a needle assembly is attached, and a control module that is attached to the first body, controls the operation of the needle assembly, and is electrically connected to an internal device, and has a breakable portion that protrudes outward from one side of the control module. The breakable portion can be broken by an external force to disconnect the electrical connection between the control module and the internal device, thereby stopping the operation of the internal device when necessary, providing convenience to the user.

Description

[Technical field]

[0001] The present invention relates to a chemical liquid injector. [Background technology]

[0002] Drug injection devices, such as insulin injection devices, are used to inject drug solutions into a patient's body. They may be used by professional medical professionals such as doctors and nurses, but in most cases are used by laypeople such as the patient themselves or their guardians.

[0003] Diabetic patients, particularly pediatric diabetic patients, need to inject liquid medicines such as insulin into their bodies at set time intervals. Patch-type liquid medicine injection devices that are attached to the body for a certain period of time have been developed, and such liquid medicine injection devices can be used in a state of being attached to the patient's body, such as the abdomen or waist, in a patch-like state for a certain period of time.

[0004] In order to increase the effectiveness of drug injection, the drug injection device needs to be controlled to precisely inject the drug into the patient's body, and it is important to precisely inject a small amount of drug through a small drug injection device.

[0005] When attached to the human body, the liquid injection device needs to be comfortable to wear, easy to use, durable, and driven with low power. In particular, since the liquid injection device is directly attached to the skin of a patient, it is important that the liquid injection device can be driven conveniently and safely by the user.

[0006] Furthermore, such drug injection devices are typically required to have a shelf life of at least one year, and they must be maintained in such a way that battery consumption is minimized until this period of use so that they will continue to function without problems within the guaranteed period of use even if they are used when the shelf life is approaching.

[0007] In addition, when attached to the human body, the liquid injection device needs to be comfortable to wear, easy to use, durable, and operate with low power. In particular, since the liquid injection device is used by being directly attached to the skin of a patient, it is important that the user can operate the liquid injection device conveniently and safely.

[0008] Conventionally, liquid injectors have an alarm function that notifies the user of normal and malfunctioning operation. However, there has been a problem in that the alarm may persist due to an error even when the device is operating normally, causing inconvenience to the user. Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention provides a liquid medicine injection device that can be safely operated and delivers medicine accurately, and minimizes battery consumption during manufacturing and / or distribution.

[0010] An embodiment of the present invention provides a liquid injector that can stop operation of internal devices such as an alarm unit and multiple sensor units installed inside when necessary, providing convenience to a user. [Means for solving the problem]

[0011] In order to achieve the above object, one embodiment provides a medical solution injection device including: a housing having an interior that is at least partially open at a first time point and sealed at a second time point that is later than the first time point; a needle assembly located within the housing and configured to eject at least a portion of the needle assembly to the outside of the housing by a user's operation at a third time point that is later than the second time point; a reservoir that is sealed within the housing after the second time point, contains a medical solution, and is fluidly connected to the needle assembly; a drive module that is sealed within the housing after the second time point, is interposed between the needle assembly and the reservoir, and generates a drive force for ejecting the medical solution after the third time point; a battery module that is sealed within the housing after the second time point; and a control module that is sealed within the housing after the second time point and is electrically connected to the transmission module and the battery module after the third time point to control the drive module.

[0012] The apparatus may further include a trigger module configured to control the driving module so as not to operate at least at the first time point and the second time point.

[0013] The device may further include a transmission module that transmits the driving force to a plunger disposed inside the reservoir, and a trigger module that controls the transmission module not to operate at least at the first time point and the second time point.

[0014] The control module may be configured to be electrically disconnected from the battery module at the first time point.

[0015] According to another embodiment, a drug solution injection device can be provided, the device including: a housing having an interior that is at least partially open at a first time point and is sealed at a second time point that is later than the first time point; a needle assembly that is contained within the housing and is configured to eject at least a portion of the needle assembly outside the housing at a third time point that is later than the second time point; a reservoir that is contained within the housing, contains a drug solution, and is fluidly connected to the needle assembly; a plurality of electrically controllable electronic modules that are contained within the housing; a battery module that is electrically connected to the plurality of electronic modules; and an activator that is configured to be electrically connected to at least one of the electronic modules at the first time point.

[0016] The electronic module may include a transmission module interposed between the needle assembly and a reservoir for transmitting the medicinal solution to the needle assembly, and may further include a trigger module for controlling the transmission module not to operate at least at the first time point and the second time point.

[0017] The device may further include a drive module that transmits a drive force to a plunger disposed inside the reservoir, and a trigger module that controls the drive module so as not to operate at least at the first time point and the second time point.

[0018] The electronic module may include a communication unit electrically connected to the activator at the first time point and electrically connected to the battery module at the third time point.

[0019] The first point in time may refer to a step before the liquid injector is completely delivered to the liquid injector. Specifically, the first point in time may refer to a state before the liquid injector is completely assembled and the inside of the liquid injector is completely sealed, such as waterproofed.

[0020] The second point in time refers to a state in which sealing of the liquid injection device is completed after the first point in time, and therefore the process in which the liquid injection device is distributed after completion of manufacturing may also be considered as the second point in time.

[0021] The third point in time refers to a point in time when a user initiates use, which may include a step in which the user initiates an operation on at least the control module and / or the drive module of the medical fluid injector.

[0022] To achieve the above-mentioned object, one embodiment provides a drug solution injection device including a first body to which a needle assembly is attached, and a control module provided in the first body, controlling the operation of the needle assembly and electrically connected to an internal device, wherein a breaking portion is formed protruding outward on one side of the control module, and the breaking portion can be broken by an external force to release the electrical connection between the control module and the internal device.

[0023] The break portion may be formed to have a relatively narrow width in a predetermined region.

[0024] The device may further include a housing in which the first body, the control module, and the internal device are disposed and an opening is formed on one side thereof, and an attachment portion that covers the opening formed in the housing and is disposed adjacent to a user.

[0025] The device may further include a breakage cover disposed opposite the breakage portion and configured to open and close a path through which an external force is applied to the breakage portion.

[0026] The connector may further include a support portion protruding from the first body toward the break portion and supporting a predetermined region of the break portion. Effect of the Invention

[0027] According to the above-described embodiment of the present invention, the liquid injection device and its driving method according to the present invention can be easily and safely driven by a user. When a user rotates the sleeve of the needle assembly, the cannula of the needle assembly is inserted into a target body, the clutch module connects the transmission module to drive the driving module to inject liquid, and the driving module starts to drive at the same time, so that the liquid injection device can be easily and safely used.

[0028] In the liquid injection device and driving method thereof according to the present invention, the driving module is driven in an optimized driving environment, so that a fixed amount of liquid medicine can be dispensed. The starter moves the position of the driving shaft before the driving module is driven, so that the contact member can be prevented from adhering to the inner surface of the driving module, which would hinder the driving of the driving module. In order to improve the storage stability and maintain the accuracy of the liquid injection device, even if the driving module is driven after being stored for a long time, the driving module can be driven smoothly at an early stage, so that a fixed amount of liquid medicine can be dispensed to a target object.

[0029] When the user rotates the sleeve of the needle assembly, the cannula of the needle assembly is inserted into the subject, preparation for injecting the medicinal liquid is completed, and at the same time, the clutch module connects the transmission module and the drive module, so that the medicinal liquid can be injected from the reservoir into the needle, and at the same time, the drive module starts to be driven. Therefore, the user can easily rotate the needle assembly and safely start driving the medicinal liquid injection device.

[0030] The drug solution injection device and its driving method according to the present invention can safely inject a fixed amount of drug into the subject by drivingly connecting a structure for discharging drug solution by a clutch module after the cannula of the needle assembly is inserted into the subject.

[0031] The drug injection device and its driving method according to the present invention intuitively start driving by rotating the needle assembly, the rotation direction of the needle assembly and the trigger module are limited to one direction, and the rotation distance is limited to a preset distance, thereby ensuring the safety of the user.

[0032] The present invention allows various tests to be carried out while minimizing battery consumption during the manufacturing process and continuously maintaining hygienic conditions for the user, thereby further improving the accuracy and reliability of the liquid injection device.

[0033] Before the liquid injection device is assembled and shipped, i.e., when the device is assembled and the inlet hole is open, various devices housed inside the housing can be test-operated or tested through the activator. As a result, the above-mentioned various tests can be completed without using the power source of the battery module installed inside the housing, and thus the power consumption of the battery module can be minimized, thereby minimizing power consumption problems during the manufacturing and distribution processes.

[0034] The present invention has the advantage that a breaking portion formed in a control module that is electrically connected to internal devices such as an alarm unit and multiple sensor units can be broken by an external force to release the electrical connection between the control module and the internal devices, and when necessary, the operation of internal devices such as an alarm unit and multiple sensor units installed inside can be stopped, thereby providing convenience to the user.

[0035] The present invention has an effect of eliminating inconvenience caused to a user due to the alarm unit electrically connected to the control module continuously providing an alarm in a normal or malfunctioning state when the breaking portion is broken.

[0036] Of course, the scope of the present invention is not limited to such effects. [Brief description of the drawings]

[0037] [Figure 1] FIG. 1 is a perspective view of a chemical liquid injection system according to one embodiment. [Diagram 2] FIG. 2 is a configuration diagram of a chemical liquid injection system according to one embodiment. [Diagram 3] FIG. 3 is a plan view showing a more specific embodiment of the liquid injector of FIG. [Figure 4] FIG. 4 is a bottom view showing a more specific embodiment of the liquid injector of FIG. [Figure 5a] FIG. 5a is a cross-sectional view illustrating actuation of a needle assembly according to one embodiment. [Figure 5b] FIG. 5b is a cross-sectional view illustrating actuation of a needle assembly according to one embodiment. [Figure 5c] FIG. 5c is a cross-sectional view illustrating actuation of the needle assembly according to one embodiment. [Figure 6] FIG. 6 is a cross-sectional view of a drive module according to one embodiment. [Figure 7] FIG. 7 is a cross-sectional view showing the structure of one embodiment of the reservoir and transfer module. [Figure 8] FIG. 8 is a top view of a portion of one embodiment of a reservoir and delivery module. [Figure 9] FIG. 9 shows a cross-section of an activator portion adjacent to an inlet hole in a housing. [Figure 9] FIG. 10 shows a cross section of the activator portion adjacent the inlet hole in the housing. [Figure 11] FIG. 11 is a block diagram showing a chemical liquid injection system according to one embodiment of the present invention. [Figure 12] FIG. 12 is a perspective view showing a liquid injector according to one embodiment of the present invention. [Figure 13] FIG. 13 is an exploded perspective view of the liquid injector of FIG. [Figure 14] FIG. 14 is a bottom perspective view showing a chemical liquid injector according to one embodiment of the present invention. [Figure 15]FIG. 15 is a diagram showing a state in which the attached portion of FIG. 14 has been removed. [Figure 16] FIG. 16 shows the state where the lower cover of FIG. 15 has been removed. [Figure 17] FIG. 17 is an enlarged view of part B in FIG. [Figure 18] FIG. 18 is an enlarged view of part B in FIG. [Figure 19a] FIG. 19a is a partially enlarged cross-sectional side view of portion a in FIG. [Figure 19b] FIG. 19b is a partially enlarged cross-sectional side view of portion a in FIG. [Figure 20] FIG. 20 is a block diagram showing a partial configuration of the liquid injector of FIG. [Figure 21] FIG. 21 is a plan view showing an actuation for sensing the flow rate of a reservoir. [Figure 22] FIG. 22 is a cross-sectional view showing the actuation of injecting a liquid medicine into a reservoir, storing the liquid medicine, and discharging the liquid medicine into a needle. [Figure 23] FIG. 23 is a cross-sectional view showing the actuation of injecting a liquid medicine into a reservoir, storing the liquid medicine, and discharging the liquid medicine into a needle. BEST MODE FOR CARRYING OUT THEINVENTION

[0038] The present invention can be modified in various ways and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail. The effects and features of the present invention, as well as methods for achieving them, will become apparent from the following detailed description of the embodiments in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various forms.

[0039] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. When describing with reference to the drawings, the same or corresponding components are given the same reference numerals, and duplicate descriptions thereof will be omitted.

[0040] In the following embodiments, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0041] In the following embodiments, terms such as "include" or "have" mean the presence of features or components described in the specification, and do not preclude the possibility that one or more other features or components may be added.

[0042] In the following embodiments, when a part such as a film, region, or component is said to be on or above another part, this includes not only the case where it is directly on top of the other part, but also the case where another film, region, component, etc. is interposed between them.

[0043] When an embodiment can be embodied in other ways, the order of certain steps may be performed out of the order described, for example, two steps described in succession may be performed substantially simultaneously or may be performed in the reverse order from that described.

[0044] In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and the following embodiments are not necessarily limited to those shown.

[0045] FIG. 1 shows a liquid injection system according to an embodiment of the present invention, which may include a liquid injection device 1 and a liquid injection control electronic device 2. As shown in FIG.

[0046] 1, the liquid medicine injection device 1 is attached to a body to be injected with liquid medicine and can inject a fixed amount of liquid medicine stored therein as set by a user. As an alternative embodiment, the liquid medicine injection device 1 can be attached to the user's body via an attachment module 6 coupled to a housing 5 for use. As another alternative embodiment, the liquid medicine injection device 1 can also be attached to an animal to inject liquid medicine.

[0047] The liquid medicine injector 1 can be used for various purposes depending on the type of liquid medicine to be injected. For example, the liquid medicine can include insulin-based liquid medicine for diabetic patients, other liquid medicine for the pancreas, liquid medicine for the heart, and various other types of liquid medicine.

[0048] The liquid injection device 1 can be connected to a liquid injection control electronic device 2 connected by wire or wirelessly. A user can operate the liquid injection control electronic device 2 to control the liquid injection device 1 and / or monitor the usage status of the liquid injection device 1. For example, the amount of liquid injected from the liquid injection device 1, the number of times the liquid has been injected, the amount of liquid stored in a reservoir, the user's bio-information, etc. can be monitored, and the user can operate the liquid injection device 1 based on the information.

[0049] FIG. 2 is a configuration diagram of a chemical liquid injection system according to one embodiment.

[0050] In one embodiment, the drug solution injection device 1 includes a housing 5 and a plurality of elements disposed in the housing 5. The elements disposed in the housing 5 may include a needle assembly 100, a reservoir 200, a battery module 700, a transmission module 400, and a plurality of electronic modules. According to one embodiment, the electronic modules may include a control module 800, a driving module 300, a sensing module 181, an emergency switch 810, a buzzer 820, and / or an activator 830.

[0051] First, the housing 5 has a space therein, and the above-mentioned various modules and / or devices are accommodated in this space, and an inlet hole 103 is provided in at least a portion thereof, through which the interior can be selectively opened. Such opening is performed only during the manufacturing process, and at a specific point in time thereafter, the inlet hole 103 can be sealed by the cover body 104. That is, at least at the time when a user first intends to use the device, the inlet hole 103 can be kept sealed by the cover body 104. Therefore, the modules and / or devices located in the housing 5 can be sealed after this point in time.

[0052] The sealing of the housing 5 does not have to be at a level that maintains complete airtightness, and may refer to, for example, the degree of airtightness to liquids rather than gas. Furthermore, the airtightness to liquids is not limited to high pressure and / or long-term airtightness, and may be, for example, airtightness to the extent of waterproofing for daily life.

[0053] The reservoir 200 is disposed within the housing 5 and stores a medicinal liquid therein.

[0054] The needle assembly 100 is disposed within the housing 5 and delivers the medicinal fluid stored in the reservoir 200 into the user's body.

[0055] Between the needle assembly 100 and the reservoir 200, there is a transfer module 400 that transfers the medicinal liquid to the needle assembly 100 under the control of the control module 800. The transfer module 400 may include a mechanism for dispensing the medicinal liquid in the reservoir 200 in a fixed amount.

[0056] The battery module 700 is accommodated in the housing 5 and supplies power to the electronic module in the housing 5. Such a battery module 700 may use a primary battery or a secondary battery, and the housing 5 may not have a separate fastening structure for replacing the battery module 700 due to issues such as waterproofing and / or contamination.

[0057] The control module 800 is accommodated in the housing 5 and is electrically connected to the battery module 700 , and controls the liquid injector 1 .

[0058] The control module 800 may include a communication unit 801 , a processor 802 and a switching module 803 .

[0059] The communication unit 801 is configured to communicate with the medical fluid injection control electronic device 2. The communication unit 801 may include a short-range communication unit such as a Bluetooth (registered trademark) communication unit, a BLE (Bluetooth Low Energy) communication unit, a near field communication unit, a WLAN (Wi-Fi) communication unit, a ZigBee (registered trademark) communication unit, an IrDA (infrared Data Association) communication unit, a WFD (Wi-Fi (registered trademark) Direct) communication unit, a UWB (ultra wideband) communication unit, or an Ant+ communication unit, or a mobile communication network.

[0060] The processor 802 is a component for controlling the entire liquid injector 1. For example, the processor 802 may include a CPU, a RAM, and / or a ROM. Here, the ROM may be configured to store an instruction set for starting the system. According to an embodiment of the present invention, the processor 802 may be embodied as a digital signal processor (DSP) for processing digital signals, a microprocessor, or a time controller (TCON). However, the processor 802 is not limited thereto, and may include or be defined as one or more of a central processing unit (CPU), a micro controller unit (MCU), a micro processing unit (MPU), a controller, an application processor (AP), a communication processor (CP), or an ARM processor. The processor 802 may also be embodied as a system on chip (SoC) or large scale integration (LSI) incorporating a processing algorithm, or as a field programmable gate array (FPGA).

[0061] The switching module 803 can control the electrical connection of the liquid injection device 1. For example, the switching module 803 can block the control module 800 from operating through the battery module 700 until the needle of the needle assembly 100 is inserted by the user. That is, the switching module 803 can control the entire device to be maintained in an OFF state except for a minimum of functions until the user starts using the device. The switching module 803 can selectively block the sensing module 181, the emergency switch 810, the buzzer 820, the driving module 300, and the control module 800 from being electrically connected to the battery module 700 and operating or consuming reserve power until the user starts using the device, that is, after the manufacturing process and sealing with the cover body 104 until the user starts using the device. After the user starts using the device, the electronic modules of the entire device can be electrically connected to the battery module 700. As will be described later, the switching module 803 can be provided to be electrically connected to the activator 830 even before the user starts using the device to respond to various tests. According to the illustrated embodiment, the switching module 803 is shown as a separate module distinct from the processor 802, however the present invention is not necessarily limited thereto, and the switching module 803 can be a block of the processor 802 that includes a program that functions to manage electrical connections.

[0062] Meanwhile, the driving module 300 is connected to the control module 800 and can provide power to the transmission module 400. The driving module 300 can use various pump devices, but is not limited thereto, and can use driving devices such as a precision control motor, a shape memory element, etc.

[0063] According to one embodiment, a clutch module 500 may be included between the transmission module 400 and the reservoir 200, and the clutch module 500 may selectively couple the drug dispensing means in the reservoir 200 to the transmission module 400.

[0064] The trigger module 600 may be coupled to at least one of the drive module 300, the transmission module 400 or the clutch module 500, and may initiate or prepare operation of the drive module 300, the transmission module 400 and / or the clutch module 500 in response to a user selection.

[0065] The sensing module 181 may include at least one sensor. The sensor may sense whether the needle assembly 100 is inserted, and transmit the information to the control module 800. According to an embodiment, the sensing module 181 may further include various other sensors. For example, the sensing module 181 may further include a sensor coupled to the reservoir 200 to measure the degree to which the user fills the reservoir 200 with the medicinal liquid and / or the degree to which the medicinal liquid is discharged from the reservoir 200.

[0066] The emergency switch 810 is electrically connected to the control module 800 and can be operated by the user to stop the injection of the liquid medicine if a problem occurs in the liquid medicine injector 1. Such an emergency switch 810 can perform a safe function in dangerous situations to prevent unnecessary liquid medicine from being supplied to the patient.

[0067] The buzzer 820 is electrically connected to the control module 800 and is configured to emit a sound in an emergency situation, etc., to alert the user.

[0068] The activator 830 may be provided to be electrically connected to at least one of the electronic modules in the housing 5 when the inlet hole 103 of the housing 5 described above is opened.

[0069] Specifically, the activator 830 may be electrically connected to the control module 800. Thus, when the inlet 103 of the housing 5 is opened, an external device may be electrically connected to the control module 800, and various electronic modules electrically connected to the control module 800 may also be electrically connected through the control module 800. When the inlet 103 is opened, the power may be cut off from the battery module 700, and in this state, switching, testing and / or diagnosis of various electronic modules accommodated inside the housing 5 may be performed through the activator 830.

[0070] According to FIG. 2, the activator 830 is shown to be electrically connected to the control module 800 and to electrically communicate with other electronic modules via the control module 800, however the present invention is not necessarily limited thereto and although not shown in the figure, the activator 830 may be directly connected to other electronic modules used within the housing 5, such as the drive module 300, the sensing module 181, the emergency switch 810 and / or the buzzer 820.

[0071] Alternatively, the activator 830 may be electrically connected to the battery module 700 so as to be directly connected thereto, thereby enabling external control of the battery module 700 and / or external power supply via the activator 830 when the inlet hole 103 is opened. Furthermore, the activator 830 may also be used for grounding purposes.

[0072] The liquid injector 1 is a medical device that requires a very high level of waterproof performance, and once assembled, it is difficult to disassemble and use again, for example, if a user disassembles it at will, there must be clear evidence of disassembly. Furthermore, it may be powered by disposable batteries so that it cannot be reused, and may have a long expiration date of 12 months or more. Thus, the liquid injector 1 must be maintained so that battery consumption is kept to a minimum during production and distribution, and its performance does not deteriorate.

[0073] For this reason, there is a limit to using the built-in battery to test the functions of various components of the liquid injection device 1 before the liquid injection device 1 is assembled and shipped. That is, in this case, the battery consumption during various tests of the liquid injection device 1 must be minimized, and the liquid injection device 1 must be able to maintain a standby state with a minimum power supply until it starts to operate after the user acquires it. For example, it is possible to maintain only a monitoring power sufficient to switch on when the user injects a certain amount of liquid into the reservoir 200.

[0074] In this state, the activator 830 is electrically connected to the control module 800, the electronic module and / or the battery module 700 as described above, so that when the liquid injection device 1 is assembled and the inlet hole 103 is open, various tests of the liquid injection device 1 can be performed without using the power source of the battery module 700 by connecting an external power source, test device, etc. to the activator 830.

[0075] More specifically, an external power source can be supplied to the liquid injector 1 via the activator 830. In this case, the activator 830 can include at least two wiring patterns.

[0076] Optionally, an external test device can be connected via the activator 830 to test various devices including the driving module 300 .

[0077] Optionally, the drive module 300 can be test operated via the activator 830 .

[0078] The activator 830 may be exposed to the outside before being assembled and shipped, i.e., when the device is assembled and the inlet hole 103 is open. Through the exposed activator, various devices housed inside the housing 5 can be operated or tested as described above. Thereafter, the inlet hole 103 is sealed through the cover 104, thereby completing the waterproof function of the housing 5. Since various tests can be performed through the activator 830 in this manner, the various tests described above can be completed without using the power source of the battery module 700 installed inside the housing 5. This can minimize the power consumption of the battery module 700, thereby minimizing power consumption problems during the manufacturing and distribution processes.

[0079] Meanwhile, the liquid injection control electronic device 2 may include a communication terminal that can use an application in a wired or wireless communication environment. Here, the liquid injection control electronic device 2 may be a mobile terminal of a user. To explain this in more detail, the liquid injection control electronic device 2 may include any form of computer (e.g., desktop, laptop, tablet, etc.), media computing platform (e.g., cable, satellite set-top box, digital video recorder), handheld computing device (e.g., PDA, email client, etc.), mobile phone, wearable device that can be attached or mounted on the user's body for use, or any other type of computing or communication platform, but the present invention is not limited thereto.

[0080] Such a chemical liquid injection control electronic device 2 may include a processor 25, a communication unit 21, an input unit 22, an output unit 23, and a memory unit 24.

[0081] The processor 25 is configured to control the entire liquid injection device 1 and / or the liquid injection control electronic device 2. Specifically, the processor 25 controls the entire operation of the liquid injection device 1 and / or the liquid injection control electronic device 2 using various programs stored in the storage unit 24 of the liquid injection control electronic device 2. For example, the processor 25 may include a CPU, a RAM, and / or a ROM. Here, the ROM is configured to store a command set for starting the system, and the CPU copies an operating system stored in the memory of the liquid injection control electronic device 2 to the RAM according to the command stored in the ROM, and executes the O / S to start the system. When the startup is completed, the CPU copies various applications stored in the storage unit 24 to the RAM and executes them to perform various operations. In the above, the liquid injection control electronic device 2 has been described as including only one CPU, but it may be embodied with multiple CPUs (or DSP, SoC, etc.) when embodied.

[0082] According to an embodiment of the present invention, the processor 25 may be implemented as a digital signal processor (DSP) for processing digital signals, a microprocessor, or a time controller (TCON). However, without being limited thereto, the processor 25 may include or be defined as one or more of a central processing unit (CPU), a micro controller unit (MCU), a micro processing unit (MPU), a controller, an application processor (AP) or a communication processor (CP), or an ARM processor. The processor 25 may also be implemented as a system on chip (SoC) or large scale integration (LSI) incorporating a processing algorithm, or may be implemented in the form of a field programmable gate array (FPGA).

[0083] The liquid injection control electronic device 2 may include a storage unit 24 that stores a program for processing or control by the processor 25 and / or various data for the operation of the program. The storage unit 24 may store a plurality of application programs or applications operated by the liquid injection device 1 and / or the liquid injection control electronic device 2, and data and commands for the operation of the liquid injection device 1 and / or the liquid injection control electronic device 2. At least some of the application programs may be downloaded from an external server via wireless communication. Furthermore, at least some of the application programs may be present on the liquid injection control electronic device 2 from the time of shipment for the basic functions of the liquid injection device 1 and / or the liquid injection control electronic device 2. The application programs may be stored in a storage medium and driven by the processor 25 to execute the operations (or functions) of the liquid injection device 1 and / or the liquid injection control electronic device 2.

[0084] The communication unit 21 is configured to transmit and receive data to and from the liquid injector 1 and / or an external device, i.e., a device such as a server, another user terminal, etc. The communication unit 21 may include a short-range communication unit such as a Bluetooth communication unit, a BLE (Bluetooth Low Energy) communication unit, a near field communication unit, a WLAN (Wi-Fi) communication unit, a ZigBee communication unit, an IrDA (infrared Data Association) communication unit, a WFD (Wi-Fi Direct) communication unit, a UWB (ultra wideband) communication unit, or an Ant+ communication unit, and a mobile communication network.

[0085] The input unit 22 may include a user interface for inputting various information to the liquid injection control electronic device 2 .

[0086] The output unit 23 can display the liquid injection logic, the liquid injection status, the blood glucose level status, the effects, etc., processed by the processor 25. According to an embodiment of the present invention, the output unit 23 can display a user interface according to a user input inputted via the input unit 22. The output unit 23 can output the stored graphic data, visual data, auditory data, and vibration data under the control of the storage unit 24.

[0087] The output unit 23 may be implemented as a display panel of various types. For example, the display panel may be implemented using various display technologies such as a liquid crystal display (LCD), organic light emitting diodes (OLED), active-matrix organic light-emitting diode (AM-OLED), liquid crystal on silicon (LcoS), digital light processing (DLP), etc. Also, the output unit 23 may be coupled to at least one of a front region, a side region, and a rear region of a display panel in the form of a flexible display.

[0088] The output unit 23 may be implemented as a touch screen having a layered structure. The touch screen may have a display function as well as a function of detecting not only the touch input position and touch area but also the pressure of the touch input, and may have a function of detecting not only real-touch but also proximity touch.

[0089] The liquid injection control electronic device 2 may include therein a memory unit 24 and a communication unit 21. The liquid injection control electronic device 2 may not be provided with at least one of the processor 25, the input unit 22, and the output unit 23, and may be electrically connected to at least one of the processor 25, the input unit 22, and the output unit 23 provided in a remote device.

[0090] 1 and 2, the drug injection control electronics 2 is shown to be a single device, however the present invention is not necessarily limited thereto and may include multiple devices capable of communicating with the drug injection device 1.

[0091] FIG. 3 is a plan view showing a more specific embodiment of the liquid injector 1 of FIG. 2, and FIG. 4 is a bottom view thereof.

[0092] Referring to FIG. 3 , in one embodiment of the drug injection device 1, the drug injection device 1 may include a base body 50, a needle assembly 100, a reservoir 200, a driving module 300, a transmission module 400, a clutch module 500 and a battery module 700.

[0093] The base body 50 forms a basic frame of the housing 5 and is attached to the internal space of the housing 5. A plurality of base bodies 50 may be provided. In another embodiment, the base body may be formed of a single, integrated frame.

[0094] The liquid medicine injection device 1 according to the embodiment shown in FIG.

[0095] The base body 50 may provide a space in which the trigger module 600 can rotate. The base body 50 supports the trigger module 600, and the trigger module 600 may rotate about a rotation shaft 51 protruding from the base body 50.

[0096] The base body 50 may be provided with a stopper for limiting the rotation distance of the trigger module 600. A plurality of stoppers may be provided, and the movement distance of the trigger module 600 may be limited so that the trigger module 600 rotates to a preset position. According to one embodiment, the stopper may include a first stopper 52 and a second stopper 53.

[0097] The first stopper 52 protrudes upward from the base body 50 and is disposed adjacent to the needle assembly 100. The first stopper 52 is disposed to contact the first end 610 of the trigger module 600 and can limit the rotation direction and rotation distance so that the first end 610 does not rotate in the opposite direction after rotating in one direction. The first stopper 52 can have a side wall that limits the rotation direction of the trigger module 600.

[0098] The second stopper 53 is disposed adjacent to the reservoir 200, the transmission module 400, and the clutch module 500. The second stopper 53 is disposed so as to protrude from the upper portion of the base body 50, and can limit the travel distance of the second end 620 of the trigger module 600. In one embodiment, the second stopper 53 has a longitudinal extension line passing through the center of the rotation shaft 51.

[0099] It goes without saying that the embodiment of such a trigger module 600 is not necessarily limited to the above-described embodiment, and various devices can be used that can initiate operation of at least one of the drive module 300, the transmission module 400 or the clutch module 500 according to the user's intention.

[0100] An attachment part 6 is provided on the bottom surface of the drug solution injection device 1, and it can be attached to the skin of a user. A needle N can be exposed on the bottom surface, and in a step before the user uses the device for the first time, the hole through which the needle N is exposed is combined with a separate cover member (not shown) to maintain a sealed state isolated from the outside. An emergency switch 810 is optionally exposed on the bottom surface, and the user can press the switch 810 to stop the device in a dangerous situation. The emergency switch 810 can be provided to be sealed so that external moisture cannot penetrate.

[0101] The inlet hole 103 may be formed on the bottom surface of the liquid injection device 1, but the number of the inlet holes 103 is not limited to one, and a plurality of inlet holes 103 may be formed. In addition, in the step of releasing the liquid injection device 1, the inlet hole 103 may be covered with a cover body 104 to maintain an internally sealed state. The cover body 104 may be a bonding film that seals the inside of the housing, and according to one embodiment, a film that blocks communication of liquid and allows communication of gas may be used. According to a specific embodiment, the cover body 104 may be made of a Tyvek material or Gore-Tex (registered trademark) material. In addition, the cover body 104 may be structured to cover a plurality of inlet holes 103 at the same time, but is not limited thereto, and may be structured to be attached to each inlet hole 103.

[0102] 5a to 5c are cross-sectional views illustrating the actuation of the needle assembly 100 according to one embodiment.

[0103] 5a to 5c, the needle assembly 100 can be attached to a base body 50. The needle assembly 100 can move the needle N and / or the cannula C axially by rotating. The needle assembly 100 can include a sleeve 110, an elastic member 120, a first holder 130, a second holder 140, the needle N, the cannula C, and a patch P.

[0104] The sleeve 110 forms the outer appearance of the needle assembly 100 and can rotate around a central axis in the longitudinal direction. An elastic member 120 is disposed inside the sleeve 110, and the sleeve 110 can receive an expansion force from the elastic member 120.

[0105] Optionally, according to one embodiment, a knob 101 can be disposed on the exterior of the sleeve 110. When the needle assembly 100 rotates, the knob 101 can apply a force to the first end 610 of the trigger module 600, causing the trigger module 600 to rotate.

[0106] A movable protrusion 115 may be disposed on the inner surface of the sleeve 110. The movable protrusion 115 may move along a guide groove 131 disposed on the outer circumferential surface of the first holder 130. When the sleeve 110 rotates, the movable protrusion 115 moves along the side wall of the guide groove 131, and the first holder 130 may rise or fall.

[0107] The elastic member 120 may be disposed between the sleeve 110 and the first holder 130. When the elastic member 120 expands, the first holder 130 may move downward. When the first holder 130 moves upward, the elastic member 120 may be compressed.

[0108] The first holder 130 can support the needle N. The needle N is inserted and fixed to one side of the first holder 130, so that when the first holder 130 moves in the axial direction, the needle N also moves together with the first holder 130. The first holder 130 is disposed in the internal space of the sleeve 110, and an elastic member 120 is disposed on the upper part of the first holder 130.

[0109] The first holder 130 may have a guide groove 131 on its outer surface. The guide groove 131 may guide the movement of the moving protrusion 115. When the sleeve 110 rotates, the moving protrusion 115 moves along a preset path formed by the guide groove 131, and the first holder 130 may rise and fall.

[0110] The guide groove 131 may include a first stop groove 131a, a lift groove 131b, an inclined groove 131c, a second stop groove 131d, and a movement limit groove 131e. The first stop groove 131a is a groove where the moving protrusion 115 is initially positioned, and the elastic member 120 maintains its contracted state. The lift groove 131b extends in the longitudinal direction of the first holder 130. When the elastic member 120 expands, the first holder 130 descends, and the moving protrusion 115 moves along the lift groove 131b. The inclined groove 131c extends with a preset inclination. When the moving protrusion 115 moves along the inclined groove 131c, the elastic member 120 contracts again, and the first holder 130 rises again. The second stop groove 131d is a groove where the moving protrusion 115 returns to its initial position, and the elastic member 120 maintains its contracted state again.

[0111] The second holder 140 is disposed to face one side of the first holder 130 and can support the cannula C. The second holder 140 is formed of a flexible material and can be instantly deformed when an external force is applied.

[0112] The second holder 140 maintains contact with the first holder 130 in the positions of Figures 5a and 5b, but when the elastic member 120 contracts again as shown in Figure 5c, it is separated from the first holder 130 and fixed to the base body 50.

[0113] A cannula C is inserted into the center of the central body 141, and a needle N can be selectively coupled thereto by moving the first holder 130. The central body 141 can come into contact with the lower end of the first holder 130.

[0114] The locking protrusion 142 may be flexibly formed and protrude outward from the central body 141. A plurality of locking protrusions 142 may be provided. Referring to Fig. 5c, the locking protrusion 142 may be fixed to the ledge portion 55 when the second holder 140 descends, and may remain fixed to the base body 50 even when the first holder 130 ascends or descends again.

[0115] The sensor 143 may be disposed on one side of the locking protrusion 142. However, without being limited thereto, the sensor 143 may be disposed on the outer surface of the central body 141. The sensor 143 may detect whether the cannula C is correctly inserted into the skin of the user. The sensor 143 may sense contact between the second holder 140 and the base 40.

[0116] In detail, as the second holder 140 moves downward, it moves over the ledge portion 55, so the sensor 143 can measure whether or not it contacts the contact portion 45 disposed on the upper portion of the base 40. The sensor 143 is made of a conductive material, and when it contacts the contact portion 45, an electric signal is generated, and the control module (not shown) can confirm whether or not the second holder 140 is inserted.

[0117] The needle N is fixed to the first holder 130, and therefore can be inserted or removed from the cannula C by the axial movement of the first holder 130. One end of the needle N is connected to the reservoir 200 to deliver the drug solution, and the other end is inserted into the cannula C and can move along the cannula C.

[0118] The cannula C is fixed to the second holder 140, and can therefore be inserted into the skin of the user by axial movement of the second holder 140. The cannula C has a conduit shape capable of accommodating the needle N, and therefore the medicinal liquid discharged from the needle N can be injected into the user.

[0119] The patch P is supported by the base 40, and the position of the cannula C can be fixed. Since the end of the cannula C is supported by the patch P, it is possible to prevent the cannula C from being separated during storage or transportation.

[0120] 5a, the needle N and the cannula C are initially disposed inside the needle assembly 100. When the user rotates the sleeve 110 a first time, the moving protrusion 115 moves in the direction i and passes over the first stop groove 131a.

[0121] 5b, the first holder 130 is lowered by the expansion force of the elastic member 120. The moving protrusion 115 does not actually move in the axial direction, but moves in the direction j along the lift groove 131b relative to the first holder 130 as the first holder 130 is lowered. The first holder 130 and the second holder 140 are lowered together, and the needle N and the cannula C pass through the patch P and are inserted into the subject.

[0122] 5c, when the user rotates the sleeve 110 a second time, the moving protrusion 115 moves in the k direction along the inclined groove 131c and is inserted into the second stop groove 131d. The second holder 140 is fixed by the ledge portion 55, but the first holder 130 rises due to the rotation of the sleeve 110, and the elastic member 120 is re-contracted due to the rise of the first holder 130.

[0123] At this time, the cannula C remains inserted into the user's skin, but the needle N rises and is separated from the subject. However, the cannula C and the needle N are fluidly connected, and the medicinal liquid injected from the reservoir 200 can be injected into the user through the needle N and the cannula C.

[0124] In the liquid medicine injection device 10, a user can simply rotate the sleeve 110, insert the cannula C into the target body, and start liquid medicine injection. In the liquid medicine injection device 1, a user can first rotate the sleeve 110 to insert the cannula C into the target body, and the knob 101 can apply force to the trigger module 600 to drive the device. More preferably, as shown in FIG. 5c, in a state in which the needle N is pulled out of the target body and only the cannula C is inserted into the target body, the knob 101 can apply force to the trigger module 600 to drive the drive module 300 to deliver the liquid medicine, and a fixed amount of the liquid medicine can be discharged from the reservoir 200. Therefore, a user can use the liquid medicine injection device 1 conveniently and stably.

[0125] 3, the reservoir 200 is attached to the base body 50 and connected to the needle assembly 100. A plunger (not shown) moves linearly inside the reservoir 200, and can discharge the drug solution into the needle N.

[0126] The driving module 300 can generate a driving force and transmit the driving force to the transmission module 400. The driving force transmitted by the transmission module 400 can linearly move the plunger 230 (see FIG. 7) into the reservoir 200 to discharge the medicinal liquid.

[0127] The driving module 300 may be any type of device having a liquid suction force and a liquid discharge force by electricity. For example, any type of pump, such as a mechanical displacement micropump or an electromagnetic movement micropump, may be used. The mechanical displacement micropump is a pump that uses the movement of a solid or fluid, such as a gear or a diaphragm, to generate a pressure difference to induce a fluid flow, and includes a diaphragm displacement pump, a fluid displacement pump, and a rotary pump. The electromagnetic movement micropump is a pump that uses electrical or magnetic energy directly to move a fluid, and includes an electrohydrodynamic pump (EHD), an electroosmotic pump, a magnetohydrodynamic pump, and an electrowetting pump.

[0128] When the drive module 300 is engaged with the transmission module 400 by the clutch module 500, it rotates the drive wheel 420 of the transmission module 400, and the rotation of the drive wheel 420 causes a rod to move linearly, thereby allowing a plunger (not shown) to move inside the reservoir 200.

[0129] FIG. 6 is a cross-sectional view of a drive module 300 according to one embodiment.

[0130] The driving module 300 may include a membrane 320 disposed inside the cover 310. The membrane 320 may divide the internal space of the driving module 300 into a first space S1 and a second space S2. The driving module 300 may cause the driving shaft 330 to move linearly by changing the volumes of the first space S1 and the second space S2.

[0131] The membrane 320 may have a porous structure that allows the movement of fluids and ions. The membrane 320 may be, for example, a frit membrane manufactured by thermally sintering spherical silica. For example, the spherical silica used to form the membrane may have a diameter of about 20 nm to about 500 nm, specifically, about 30 nm to about 300 nm, and more specifically, about 40 nm to about 200 nm. When the diameter of the spherical silica satisfies the above-mentioned range, the pressure due to the first fluid passing through the membrane 320, i.e., a pressure sufficient to move the drive shaft 330, may be generated.

[0132] In the above embodiment, the membrane 320 includes spherical silica, but the membrane 320 is not limited thereto. In another embodiment, the membrane 320 is not limited to a specific type as long as it is a material that can cause an electrokinetic phenomenon due to a zeta potential, such as porous silica or porous alumina.

[0133] Membrane 320 can have a thickness of about 20 μm to about 10 mm, specifically, about 300 μm to about 5 mm, and more specifically, about 1,000 μm to about 4 mm.

[0134] A first electrode body 321 and a second electrode body 322 are disposed on both sides of the membrane 320. The first electrode body 321 and the second electrode body 322 may each have a porous plate shape.

[0135] The porous plates can be arranged to contact both main surfaces of the membrane 320, respectively. The porous plates can effectively move fluids and ions through their porous structures. The porous plates can have a structure in which an electrochemical reactant is formed on a porous base layer. The electrochemical reactant can be formed by electrochemically depositing or coating the porous base layer by methods such as electroless plating, vacuum deposition, coating, and sol-gel process.

[0136] The porous base layer may have a pore size of about 0.1 μm to about 500 μm, specifically, about 5 μm to about 300 μm, and more specifically, about 10 μm to about 200 μm. When the pore size of the porous base layer satisfies the above-mentioned range, it can effectively transfer fluids and ions, and improve the stability, life characteristics, and efficiency of the driving module 300.

[0137] The driving shaft 330 is disposed on one side of the cover 310 and can move linearly in response to a change in the volume of the first space S1 and the second space S2. When an oxidation-reduction reaction occurs between the first electrode body 321 and the second electrode body 322, a volume change occurs in the first space S1 and the second space S2 due to products (e.g., hydrogen ions, water) generated by the oxidation-reduction reaction. The volume change in the first space S1 and the second space S2 applies force to the driving shaft 330, so that the driving shaft can move linearly.

[0138] 6, a moving end 340 is disposed at an end of the driving shaft 330 and can transmit the driving force generated by the driving module 300 to the transmission module 400. The moving end 340 may include a body 341 inserted into the driving shaft 330, a guide protrusion 342 protruding from an upper portion of the body 341, and a connection shaft 343 connected to the transmission module 400.

[0139] The guide protrusion 342 may have a slanted side wall facing the trigger module 600 or the starter 650. The slanted surface 342a may have a predetermined angle along the drive shaft 330.

[0140] The connecting shaft 343 is connected to a connector (not shown) of the transmission module 400. The linear movement of the drive shaft 330 also causes the connecting shaft 343 to move linearly, which in turn causes the connector to move and drive the drive wheel 420.

[0141] A contact member 350 may be attached to the outside of the driving shaft 330. An internal space of the driving module 300, for example, a second space S2 defined by an inner surface of the cover 310 and one side of the driving shaft 330, is a sealed space in which a fluid exists. The contact member 350 may prevent the fluid from leaking into a gap between the inner surface of the cover 310 and the driving shaft 330.

[0142] The contact member 350 is made of a material having a certain elasticity and can tightly seal the gap between the inner surface of the cover 310 and the drive shaft 330. In one embodiment, the contact member 350 may be made of a silicone-based and / or rubber-based material.

[0143] FIG. 7 is a cross-sectional view showing the structure of one embodiment of the reservoir 200 and the transmission module 400, and FIG. 8 is a plan view of a portion thereof.

[0144] The transmission module 400 is provided between the drive module 300 and the reservoir 200, and can move the plunger 230 disposed in the reservoir 200 by the driving force generated by the drive module 300. However, the transmission module 400 can move the plunger 230 only when the rod 410 and the drive wheel 420 are coupled by the clutch module 500.

[0145] The rod 410 has one end connected to the plunger 230 and extends in one direction. The drive wheel 420 is drivably connected to the drive module 300 and can rotate when driven by the drive module 300. The drive wheel 420 has a first connection end 421 and a second connection end 422, and can have a space therein through which the rod can move. At least one of the first connection end 421 and the second connection end 422 is drivably connected to the drive module 300 by a connector, so that the drive wheel 420 can rotate when driven by the drive module 300.

[0146] In one embodiment, the first connecting end 421 and the second connecting end 422 may have a gear tooth shape. A connector (not shown) connected to the driving module 300 may apply force to the gear teeth to rotate the driving wheel 420.

[0147] The driving wheel 420 may have a protruding hub 423 at the first connecting end 421. Referring to Fig. 8, the hub 423 may protrude to a preset height. The hub 423 may form a space into which the second flange 621 of the trigger module 600 can be inserted.

[0148] The drive wheel 420 has a first supporter 424 protruding from one side and supporting one end 511 of the coupler 510. As shown in Fig. 8, the first supporter 424 is disposed on one surface of the drive wheel 420 and can support one end 511 of the coupler 510 so as to maintain the diameter of the coupler 510 in an expanded state.

[0149] As an optional embodiment, the first supporter 424 may have a protruding projection at its end to prevent the one end 511 of the coupler 510 from coming off.

[0150] When the coupler 510 is separated from the first supporter 424, the coupler 510 reduces in diameter and grips the inserter 520. The coupler 510 contracts to a set radius, providing a preset gripping force to the inserter 520.

[0151] The clutch module 500 may drivingly connect the drive module 300 and the transmission module 400. The clutch module 500 may be disposed between the rod 410 and the drive wheel 420, and may include an inserter 520 and a coupler 510.

[0152] The inserter 520 may be disposed so that at least a portion of the inserter 520 is inserted into the rod 410. The inserter 520 may be disposed so as to cover the outside of the rod. The inserter 520 may connect the drive module 300 and the rod 410 by the operation of the coupler 510.

[0153] In one embodiment, the rod and the inserter 520 may have a screw and thread form, respectively. A thread is formed on the outer circumferential surface of the rod, and a thread is formed on the inner circumferential surface of the inserter 520, and they are connected in a screw-in coupling form. When the coupler 510 applies a force to the outside of the inserter 520, the rod 410 and the inserter 520 are coupled to the driving wheel 420 by the coupler 510. At this time, the driving wheel 420 and the inserter 520 rotate together, and the rod can move linearly in one direction.

[0154] The inserter 520 may have a predetermined flexibility so that it is engaged with the transmission module 400 by the elastic force applied by the coupler 510 .

[0155] The coupler 510 is disposed on the outside of the inserter 520, and when activated, can connect the rod 410 and the driving wheel 420. The coupler 510 is a part that can apply a force to the outside of the inserter 520 with an elastic force, and is not limited to a specific shape. However, for the convenience of explanation, the following description will focus on the case where the coupler is a spring type.

[0156] One end 511 of the coupler 510 can be detachably attached to the drive wheel 420. The one end 511 is supported by the first supporter 424, but can be separated beyond the protrusion of the first supporter 424 by the application of force from the second flange 621. The other end of the coupler 510 is fixed to the drive wheel 420.

[0157] Therefore, when one end 511 of the coupler 510 is attached to the drive wheel 420, the rod 410 and the drive wheel 420 are drivingly separated because the coupler 510 is only attached to the drive wheel 420, but when one end 511 of the coupler 510 grasps the inserter 520, the coupler 510 drivingly connects the rod 410 and the drive wheel 420.

[0158] When the clutch module 500 is not activated, the rod 410 and the inserter 520 can move in the internal space of the drive wheel 420 when the medicinal liquid is injected into the reservoir 200 for storage. Since a gap g is formed between the inserter 520 and the coupler 510, the rod 410 and the inserter 520 can move if the coupler 510 does not grip the inserter 520.

[0159] When the clutch module 500 is activated, the rotation of the drive wheel 420 causes the inserter 520 to rotate together. At this time, since the rod 410 is connected to the inserter 520, the rotation of the inserter 520 causes the rod 410 to move linearly forward.

[0160] The trigger module 600 can generate a mechanical signal for injecting a liquid medicine from the liquid medicine injector 1. The trigger module 600 is rotatably disposed on one side of the base body 50, and the trigger module 600 rotates to start driving the driving module 300, and at the same time, the clutch module 500 can drive and connect the transmission module 400.

[0161] The trigger module 600 can rotate in one direction around the pivot shaft 51. At this time, the trigger module 600 can apply force to the clutch module 500 to couple the rod and the driving wheel 420. In addition, the trigger module 600 can release the contact with the starter 650, and the starter 650 can apply force to the driving shaft 330 to move the position of the contact member 350. The trigger module 600 can be divided into a plurality of bent parts.

[0162] The trigger module 600 may have a first end 610 extending to the needle assembly 100. The first end 610 is arranged to contact the first stopper 52, and when a user rotates the needle assembly 100, the knob 101 may apply force to the first flange 611 to start rotating the trigger module 600, as shown in FIG. 3. After the first end 610 rotates, the incision groove 612 may be supported by the side wall 52b of the first stopper 52, limiting the rotation of the trigger module 600 in the opposite direction.

[0163] The trigger module 600 may have a second end 620 that extends to the clutch module 500. The second end 620 may have a second flange 621 that extends in the other direction from the first end 610 and is inserted between one end 511 of the coupler 510 and the drive wheel 420. When the trigger module 600 rotates, the second flange 621 applies a force to the one end 511 of the coupler 510, coupling the coupler 510 with the inserter 520 and activating the clutch module 500.

[0164] The trigger module 600 may include a third end 630 that extends to the drive module 300. The third end 630 may extend toward the drive module 300 and initiate actuation of the drive module 300.

[0165] The third end 630 may be provided with a support piece 631 and a guide piece 632 bent toward the driving shaft 330. Referring to Figures 6 and 8, the support piece 631 may support the starter 650 before driving the medical solution injector 1. The guide piece 632 is disposed adjacent to the support piece 631 and may support a side wall of the moving end 340 or move along the side wall.

[0166] The third end 630 keeps the drive shaft of the drive module 300 fixed by the starter 650, but when the trigger module 600 rotates, the third end 630 releases contact with the starter 650, and the starter 650 applies force to the moving end 340, starting to drive the drive module 300.

[0167] The starter 650 can move the driving module 300 by rotating the trigger module 600. When the starter 650 is released from contact with the trigger module 600, the starter 650 can apply force to the moving end 340 of the driving module 300 to move the driving shaft 330.

[0168] In one embodiment, the starter 650 may be formed in a spring shape having a preset elastic force, but is not limited thereto, and may be formed in a stick shape having a predetermined elastic force.

[0169] The starter 650 is disposed so that one end is attached to the base body 50 and the other end supports an end of the trigger module 600. The force application end 651 of the starter 650 is disposed between the moving end 340 and the support piece 631 of the trigger module 600.

[0170] The starter 650 can apply a force to the end of the driving shaft 330 by the rotation of the trigger module 600. The starter 650 maintains a compressed state before the liquid injector 1 is driven, but when the starter 650 is released from contact with the support piece 631, the force applying end 651 applies a force to the moving end 340 due to the expansion force of the starter 650. At this time, the driving shaft 330 connected to the moving end 340 and the contact member 350 installed on the driving shaft 330 can be moved by the movement of the moving end 340. Then, an electrochemical reaction is started in the driving module 300, and the driving module 300 starts to be driven.

[0171] The support piece 631 of the trigger module 600 maintains the starter 650 in a compressed state. The starter 650 is attached to the base body 50 in a preset compressed state, but the compression force is not released because the support piece 631 maintains a fixed position. The support piece 631 of the trigger module 600 maintains contact with the force application end 651 of the starter 650, limiting the movement of the starter 650.

[0172] The contact member 350 is located at a first position P1 on the inner surface of the cover 310, and the end of the drive shaft 330 is located at i. The first position P1 is defined as a position where the contact member 350 and the inner surface of the cover 310 come into contact with each other before the liquid injector 1 is driven, and is not limited to a specific position. Since no external force is transmitted to the drive shaft 330, the contact member 350 is located at the preset first position P1.

[0173] At this time, the clutch module 500 is not driven, and therefore the coupler 510 is not connected to the inserter 520. Therefore, the rod of the transmission module 400 and the drive wheel 420 are in a drivingly separated state, and the medicinal liquid stored in the reservoir 200 does not flow into the needle N.

[0174] The trigger module 600 rotates and the contact between the support piece 631 and the starter 650 is released. When the knob 101 of the needle assembly 100 applies force to the first flange 611, the trigger module 600 rotates around the pivot shaft 51, and the support piece 631 also rotates in a direction away from the moving end 340. At this time, the contact between the support piece 631 and the force application end 651 is released. At the same time, the force application end 651 applies force to the moving end 340, moving the drive shaft 330. The compression force of the force application end 651 is released, and the force application end 651 comes into contact with the inclined surface 342a and moves along the inclined surface 342a. The force application end 651 pushes the moving end 340 in the axial direction, and the moving end 340 and the drive shaft 330 move in a direction away from the drive module 300. The end of the drive shaft 330 moves from position i to position j, and the contact member 350 moves together with the drive shaft 330 and is located at the second position P2. At this time, the clutch module 500 is driven to couple the coupler 510 and the inserter 520. One end 511 of the coupler 510 is separated from the drive wheel 420 and grips the outside of the inserter 520, so that the drive wheel 420, the coupler 510, the inserter 520 and the rod are driven as a unit.

[0175] The force application end 651 can move beyond the inclined surface 342a. The force application end 651 is located on the opposite side of the moving end 340 with reference to FIG. 8, and the contact with the moving end 340 is released. The moving end 340 can be supported on one side of the base body 50. At this time, an electrochemical reaction occurs in the driving module 300, and a driving force that moves the driving shaft 330 back and forth linearly can be generated. The result of the electrochemical reaction occurring inside the driving module 300 causes a volume change between the first space S1 and the second space S2. This volume change is transmitted to the driving shaft 330 as a driving force. That is, when the volume of the second space S2 increases, the driving shaft 330 advances, and when the volume of the second space S2 decreases, the driving shaft 330 moves backward. The movement of the driving shaft 330 causes the moving end 340 to reciprocate linearly, and the connecting shaft 343 of the moving end 340 can rotate the driving wheel 420 via a connector (not shown) to discharge the drug solution from the reservoir 200.

[0176] After the medical solution injection device 1 is manufactured, the contact member 350 contacts a specific area (first position P1) of the cover 310 for a long time before it is driven. Since the contact member 350 includes a silicone-based or rubber-based material, it is deformed by the long-term contact and can be attached to the inner surface of the cover 310. If the contact member 350 is attached to the inner surface of the driving module 300, this may hinder the initial driving of the driving module 300, and it may become difficult to dispense a fixed amount of medicine from the needle N.

[0177] The starter 650 moves the contact member 350 before driving the liquid injector 1, so that the driving module 300 can have an optimized driving environment. Specifically, when the contact between the starter 650 and the trigger module 600 is released, the starter 650 moves the driving shaft 330 of the driving module 300, so that the contact position of the contact member 350 can be changed before the driving module 300 is driven by an electrochemical reaction. The starter 650 moves the position of the contact member 350 from the first position P1 to the second position P2, so that the contact member 350 is removed from the inner surface of the driving module 300 and the initial driving of the driving module 300 can be smoothly performed.

[0178] The liquid medicine injection device 1 according to one embodiment of the present invention can be operated simply and safely by a user. When the user rotates the sleeve 110 of the needle assembly 100, the cannula C of the needle assembly 100 is inserted into the target body, the clutch module 500 connects the transmission module 400 to drive the drive module 300 to inject the liquid medicine, and at the same time, the drive module 300 starts to be driven, so that the liquid medicine injection device 1 can be used simply and safely.

[0179] In the liquid medicine injector 1 according to an embodiment of the present invention, the driving module 300 is driven in an optimized driving environment, so that the liquid medicine can be dispensed at a fixed amount. The starter 650 moves the position of the driving shaft 330 before the driving module 300 is driven, and can prevent the contact member 350 from being attached to the inner surface of the driving module 300, which would hinder the driving of the driving module 300. In order to improve the storage properties of the liquid medicine injector 1 and maintain accuracy, even if the driving module 300 is driven after being stored for a long time, the driving module 300 can be smoothly driven at an early stage, so that the liquid medicine can be dispensed at a fixed amount to the target object.

[0180] In the drug solution injection device 1 according to one embodiment of the present invention, after the cannula C of the needle assembly 100 is inserted into the target body, the clutch module 500 drives and connects the structure for discharging the drug solution, so that a fixed amount of drug can be safely injected into the target body.

[0181] The liquid medicine injection device 1 of one embodiment of the present invention is intuitively started by rotating the needle assembly 100, the rotation direction of the needle assembly 100 and the trigger module 600 is limited to one direction, and the rotation distance is limited to a preset distance, thereby ensuring the safety of the user.

[0182] 9 and 10 are cross-sectional views of a portion of an activator 830 provided adjacent to the inlet hole 103 of the housing 5. FIG.

[0183] The activator 830 may be formed on a substrate 831 accommodated inside the housing 5. The activator 830 is formed on a surface of the substrate 831 that corresponds to the inlet hole 103, so as to be aligned with the inlet hole 103. The activator 830 may be electrically connected to the control module 800 and / or other electronic modules by a wiring pattern (not shown) formed on the substrate 831. According to an embodiment, the activator 830 may be formed on the substrate 831 using a conductive material. In the region where the activator 830 is formed, the housing 5 may be spaced apart from the substrate 831 to prevent the activator 830 from being interfered with by the housing 5.

[0184] The activator 830 may include a plurality of electrode pads separated from each other. According to an embodiment, one of the electrode pads may be a first electrode pad provided to electrically connect to an external power supply line. The first electrode pad may be electrically connected to the battery module 700 and / or the control module 800. According to another embodiment, one of the electrode pads may be a second electrode pad including an Rx and / or Tx terminal for providing a physical interface between the driving module 300 and an external wired communication device (including UART, SPI, I2C, ISP, ICSP, etc.). The second electrode pad may be electrically connected to the driving module 300 and / or the control module 800. According to yet another embodiment, one of the electrode pads may be a third electrode pad including a switching power-on terminal that enables activation of the driving module 300 by an external device. The third electrode pad may be electrically connected to the driving module 300. According to yet another embodiment, one of the electrode pads may include a terminal provided to test various electronic modules housed in the housing.

[0185] The activator 830 may be provided to be electrically connected to another external electronic device through the inlet hole 103 at a first time point. The first time point may be any time point, such as immediately after the manufacturing process and / or assembly of the medical solution injection device 1 is completed. Optionally, in this state, the other electronic devices in the housing 5 may be electrically isolated from the battery module 700 by the switching module 803.

[0186] At this first point in time, various tests may be required in some cases. For such tests, the battery module 700 cannot be connected to other electronic devices. In the case of the liquid injection device 1, the battery module 700 can be delivered to the consumer in an assembled state, but since it is necessary to minimize the various costs of the battery module 700 during that time, it is preferable that the liquid injection device 1 maintains a dormant state before a user operates the device to start using it. This is even more necessary when the liquid injection device 1 is used as a disposable module.

[0187] However, various electronic modules of the liquid injector 1 must undergo many tests during the manufacturing process, and it is not possible to power up the entire device and maintain connection with the battery module 700 each time.

[0188] According to an embodiment of the present invention, an external electronic device is electrically connected to various electronic modules in the liquid injection device 1 via the activator 830, so that the entire device can be started up or various electronic modules of the liquid injection device 1 can be tested without directly using the power source of the battery module 700, which allows the device to be manufactured stably without consuming batteries.

[0189] After such a test is completed, the inside of the liquid injection device 1 can be sanitized through the inlet hole 103. The sanitization can be performed by injecting a sanitary gas into the inside of the liquid injection device 1 through the inlet hole 103. The sanitary gas can be a sterilizing gas, a germicidal gas, a disinfecting gas, or the like that can kill bacteria and microorganisms.

[0190] Once this sanitary treatment is completed, a cover 104 is attached to the outside of the housing 5 so as to cover the inlet hole 103. The cover 104 may be in the form of a film as described above, but the present invention is not limited thereto, and may be in the form of a rigid plate. Once sealed in this manner, the housing does not need to be opened to install a battery module, so that the sanitary condition of the entire system of the liquid injection device 1 can be maintained.

[0191] Furthermore, when the sanitary treatment is completed, the entire system of the liquid injector 1 remains in a sleep state, so that battery consumption during the distribution process can be minimized.

[0192] A chemical liquid injector 1010 according to another embodiment of the present invention will now be described.

[0193] FIG. 11 is a block diagram showing a chemical liquid injection system 1000 according to one embodiment of the present invention.

[0194] 11, a liquid injection system 1000 can be provided with a liquid injector 1010, a user terminal 1020, a controller 1030, and a biological information sensor 1040. The liquid injection system 1000 allows a user to drive and control the system using the user terminal 20, and can periodically inject liquid from the liquid injector 1010 based on blood glucose information monitored by the biological information sensor 1040.

[0195] The liquid injection device 1010 may also perform the function of injecting drugs to be injected into the user, such as insulin, glucagon, anesthetics, painkillers, dopamine, growth hormones, smoking cessation aids, etc., based on data sensed by the bio-information sensor 1040.

[0196] In addition, the liquid injector 1010 can transmit device status messages to the controller 1030, including information on the remaining battery capacity of the device, whether the device has been successfully started, whether the injection has been successful, etc. The messages transmitted to the controller can be transmitted to the user terminal 1020 via the controller 1030. Alternatively, the controller 1030 can transmit improved data obtained by processing the received message to the user terminal 1020.

[0197] In one embodiment, the liquid injector 1010 may be provided separately from the bio-information sensor 1040 and installed in the subject at a distance. In another embodiment, the liquid injector 1010 and the bio-information sensor 1040 may be provided in a single device.

[0198] In one embodiment, the liquid medicine injection device 1010 can be attached to the body of a user, or in another embodiment, the liquid medicine injection device 1010 can be attached to an animal to inject liquid medicine.

[0199] The user terminal 1020 can receive input signals from a user to drive and control the chemical liquid injection system 1000 .

[0200] The user terminal 1020 generates a signal for driving the controller 1030 , and controls the controller 1030 to drive the liquid injector 1010 .

[0201] Furthermore, the user terminal 1020 can display biological information measured by the biological information sensor 1040 , and can display status information of the liquid injector 1010 .

[0202] The user terminal 1020 refers to a communication terminal available in a wired or wireless communication environment. For example, the user terminal 1020 may be a smartphone, a tablet PC, a PC, a smart TV, a mobile phone, a personal digital assistant (PDA), a laptop, a media player, a microserver, a global positioning system (GPS) device, an e-book reader, a digital broadcasting terminal, a navigation system, a kiosk, an MP3 player, a digital camera, a home appliance, a device equipped with a camera, or other mobile or non-mobile computing device.

[0203] The user terminal 1020 may also be a wearable device such as a watch, glasses, a hair band, or a ring that has communication and data processing functions. However, as described above, any terminal equipped with an application capable of Internet communication may be rented without restriction.

[0204] The user terminal 1020 can be connected one-to-one with a pre-registered controller 1030. The user terminal 1020 can be connected to the controller 1030 in an encrypted manner to prevent the controller 1030 from being driven and controlled by an external device.

[0205] In one embodiment, the user terminal 1020 and the controller 1030 can be provided as separate devices. For example, the controller 1030 can be provided to a subject to whom the liquid injection device 1010 is attached, and the user terminal 1020 can be provided to the subject or a third party. The user terminal 1020 can be operated by a guardian, thereby improving the safety of the liquid injection system 1000.

[0206] In another embodiment, the user terminal 1020 and the controller 1030 can be provided as a single device. The controller 1030 provided integrally with the user terminal 1020 can communicate with the liquid injector 1010 and control the injection of the drug.

[0207] The controller 1030 functions to transmit and receive data to and from the liquid injector 1010, and can transmit control signals related to the injection of drugs such as insulin to the liquid injector 1010, and receive control signals related to the measurement of biological information such as blood glucose levels from the biological information sensor 40.

[0208] For example, the controller 1030 can transmit an instruction request to the liquid injector 1010 to measure the current state of the user, and receive measurement data from the liquid injector 1010 in response to the instruction request.

[0209] The bioinformation sensor 1040 can function to measure bioinformation such as the user's blood glucose level, blood pressure, heart rate, etc. according to the purpose. Data measured by the bioinformation sensor 1040 can be transmitted to the controller 1030, and the drug cycle and / or injection amount can be set based on the measured data. Data measured by the bioinformation sensor 1040 can be transmitted to the user terminal 1020 and displayed.

[0210] As an example, the bioinformation sensor 1040 may be a sensor that measures the blood glucose level of a subject. It may also be a continuous glucose monitoring (CGM) sensor. The continuous glucose monitoring sensor is attached to the subject and can continuously monitor the blood glucose level.

[0211] The user terminal 1020, the controller 1030, and the liquid injector 1010 can communicate with each other via a network.

[0212] For example, the network may be a local area network (LAN), a wide area network (WAN), a value added network (VAN), a mobile radio communication network, a satellite communication network, or any combination thereof, and may refer to a data communication network in a comprehensive sense that enables the entities of each network to communicate smoothly with each other, and may include wired Internet, wireless Internet, and mobile radio communication networks.

[0213] In addition, examples of wireless communication include, but are not limited to, wireless LAN (Wi-Fi), Bluetooth low energy, ZigBee (registered trademark), WFD (Wi-Fi Direct), UWB (ultra wideband), infrared communication (IrDA, infrared Data Association), NFC (Near Field Communication), and 5G.

[0214] Fig. 12 is a perspective view showing a liquid injector 1010 according to one embodiment of the present invention, Fig. 13 is an exploded perspective view of the liquid injector 1010 of Fig. 12, and Fig. 14 is an embodiment of the present invention.

[0215] 12 to 14, a liquid medicine injector 1010 is attached to a user who injects liquid medicine, and can inject a preset amount of liquid medicine stored inside to the user.

[0216] The liquid medicine injector 1010 can be used for various purposes depending on the type of liquid medicine to be injected. For example, the liquid medicine can include insulin-based liquid medicine for diabetic patients, other liquid medicine for the pancreas, liquid medicine for the heart, and various other types of liquid medicine.

[0217] 12 to 14, a liquid medicine injection device 1010 according to an embodiment of the present invention may include a housing 1011 that forms an exterior and covers the outside, and an attachment part 1012 that is positioned adjacent to the user's skin.

[0218] The liquid medicine injection device 1010 includes a plurality of components disposed in an internal space between the housing 1011 and the attachment part 1012. Another attachment means may be further interposed between the attachment part 1012 and the user's skin, and the liquid medicine injection device 1010 may be fixed to the skin by the attachment means.

[0219] The drug injection device 1010 may include a needle assembly 1100, a reservoir unit 1200, a drive module 1300, a battery 1350, a drive unit 1400, a clutch module 1500, a trigger member 1600, a needle cover assembly 1700, an alarm unit 1800, and a number of sensor units.

[0220] 12, a liquid injection device 1010 may have a base body that may form a frame with at least one body supporting internal components. The base body may have a first body 1013, a second body 1014, a third body 1015, and a bottom cover 1017, depending on the arrangement.

[0221] The first body 1013 is disposed under the housing 1011 and can support the needle assembly 1100, the reservoir unit 1200, the driving module 1300, the battery 1350, etc. in each opening or groove.

[0222] The second body 1014 may be disposed under the first body 1013 and connected to the attachment part 1012. The second body 1014 may cover the lower part of the liquid injector 1010.

[0223] The third body 1015 is disposed on the upper side of the first body 1013, and can support the reservoir unit 1200, the driving module 1300, the battery 1350, the driving unit 1400, etc. in each opening or groove. Although the first body 1013, the second body 1014, and the third body 1015 are shown in the figure, they are not limited thereto, and they may be provided as a single body or in a plurality of bodies.

[0224] 15, 19a and 19b, a lower cover 1017 according to an embodiment of the present invention is disposed opposite the mounting portion 1012 and can be disposed inside the housing 1011.

[0225] Specifically, the lower cover 1017 covers an opening (not shown) formed on one side (the lower side in FIG. 13) of the housing 1011, and can be connected to the first body 1013 which supports the needle assembly 1100, the reservoir unit 1200, the driving module 1300, the battery 1350, etc.

[0226] In other words, the lower cover 1017 may be disposed between the first body 1013 and the attachment portion 1012. The lower cover 1017 may have an opening or a groove formed therein to support the needle assembly 1100, and may cover the driving module 1300, the battery 1350, etc., which are disposed across the opening formed in the first body 1013, and may be connected to the first body 1013 so as to be fixed in position.

[0227] The lower cover 1017 according to one embodiment of the present invention may be formed in a flat plate shape, and may have a through hole portion (1017H) formed therein to correspond to the position of a break portion 1161 formed in the control module 1016 described later.

[0228] 16, 17, 19a, 19b and 20, a control module 1016 may be disposed within the fluid injector 1010.

[0229] A control module 1016, which is a circuit board, is disposed under the second body 1014, and specifically, may be disposed inside the housing 1011 between a lower cover 1017 and the first body 1013. The control module 1016 may be covered by the lower cover 1017.

[0230] 20, a control module 1016 according to an embodiment of the present invention can control the overall operation of the drug solution injector 1010. The control module 1016 is in electrical contact with and connected to internal devices such as the driving module 1300, the battery 1350, the alarm unit 1800, and a number of sensor units, and can control the operation of these devices.

[0231] 16, 17, 19a and 19b, a break portion 1161 may be formed on one side of a control module 1016 according to an embodiment of the present invention so as to protrude outward.

[0232] The breaking portion 1161 can be used for an electrical connection between the alarm unit 1800 and the control module 1016, specifically, a control line 1016L which is a path for an alarm signal to travel. When an external force is applied to the breaking portion 1161 using a tool T such as a rod, the external force breaks the control line 1016L, thereby releasing the electrical connection between the electrically connected internal device and the control module 1016.

[0233] In this specification, "internal device" refers to components that are installed inside the liquid injection device 1010 and are powered by a power supply, such as the drive module 1300, battery 1350, alarm unit 1800, and multiple sensor units, as described above.

[0234] 19a and 19b, the control line 1016L may be disposed on the upper side (with reference to FIG. 19a) on the broken portion 1161. Specifically, the control line 1016L may be disposed adjacent to one surface (with reference to FIG. 19a) facing the through hole portion 1017H on the broken portion 1161 with reference to the center portion on the height of the broken portion 1161.

[0235] As a result, when a user applies an external force to the breaking portion 1161 using a tool T or the like, even if the breaking portion 1161 that the tool T comes into contact with is not completely cut, the control line 1016L arranged in close proximity to the surface of the breaking portion 1161 is first broken, and the electrical connection between the alarm unit 1800 and the control module 1016 is released.

[0236] However, without being limited to this, the control line 1016L can be formed not only as a path for an alarm signal, but also as a path for a drive signal of an internal device such as multiple sensor units, and various modifications are possible, such as a user being able to release the drive of an internal device by breaking the control line 1016L located at the break portion 1161.

[0237] 16, 17, 19a and 19b, a boundary may be formed in the break portion 1161 formed in the control module 1016 according to one embodiment of the present invention, and a notch portion 1162 may be formed in the shape of a groove.

[0238] Specifically, a notch 1162 may be formed at the boundary between an area where the break portion 1161 is protruding and an area where the break portion 1161 is not formed in the control module 1016. A plurality of the notches 1162 may be provided, and may be formed on both sides of the longitudinal center axis of the break portion 1161.

[0239] Referring to FIG. 17, in an embodiment of the present invention, on a break portion 1161 formed to protrude outward in a control module 1016, the area where the notch 1162 is formed may be formed to be relatively narrower in width than the other area.

[0240] As a result, when an external force is applied to the region on the break portion 1161 where the notch portion 1162 is not formed, stress is concentrated in the region where the break portion 1162 is formed, which is a region formed with a relatively narrow width, and when an external force exceeding a threshold value is applied as shown in FIG. 19b, the break portion 1161, specifically the region where the notch portion 1162 is formed, may be broken. When the region where the notch portion 1162 is formed is broken, the control module 1016, specifically the control line 1016L formed across the break portion 1161 and the notch portion 1162, may be broken, and the electrical connection between the alarm unit 1800 and the control module 1016, which are electrically connected, may be released. Referring to FIG. 16 and FIG. 17, the cutout portion 1162 according to an embodiment of the present invention may be formed to be rounded in a curved shape.

[0241] However, this is not limited to this, and various modifications are possible, such as forming the width of a predetermined section on the breaking portion 1161 in a "V" shape within the technical idea of ​​being formed to be relatively narrow.

[0242] Although not shown in the figure, the thickness of the break portion 1161 in the region where the notch portion 1162 is formed can be made relatively thinner than the thickness of the region where the notch portion 1162 is not formed.

[0243] This has the effect that when an external force is applied to breaking portion 1161 by tool T, stress is concentrated in the region where notch 1162 is formed, and breaking portion 1161 is folded and easily broken.

[0244] 17 and 18, the first body 1013 according to an embodiment of the present invention may have a receiving portion 1131 and a supporting portion 1132 formed in an area facing the breaking portion 1161. As shown in FIG.

[0245] 17, 18, 19a and 19b, the accommodating portion 1131 is formed in the shape of a groove, and the bottom portion (not shown) of the accommodating portion 1131 may be formed to be spaced a predetermined distance from the control module 1016, specifically, the breaking portion 1161.

[0246] As a result, when an external force is applied to breaking portion 1161 and breaking portion 1161 breaks, a space can be secured in which breaking portion 1161 can be folded until it breaks, and even after breaking portion 1161 is broken, it remains accommodated in accommodating portion 1131 formed in first body 1013, preventing the broken components of control module 1016 from rotating inside housing 1011.

[0247] 18, 19a, and 19b, according to an embodiment of the present invention, a first body 1013, specifically one surface of the accommodating portion 1131, may have a support portion 1132 protruding toward a predetermined region of the breaking portion 1161, specifically the region where the cutout portion 1162 is formed.

[0248] The support portion 1132 can come into contact with the area where the notch portion 1162 is formed on the breaking portion 1161 when an external force is applied to the breaking portion 1161, and by contacting and supporting the area where the notch portion 1162 is formed on the support portion 1132, there is an effect that the breaking portion 1161 can be easily broken by the external force applied by the tool T.

[0249] Specifically, referring to Figures 19a and 19b, when a user uses tool T to apply an external force to breaking portion 1161 in a direction from above to below (based on Figure 19b), support portion 1132 supports in the opposite direction to the direction in which the external force acts (from below to above based on Figure 19b), thereby making it easier to break breaking portion 1161 by the external force.

[0250] 15 and 16, the control module 1016 having the protruding break portion 1161 may be covered by a lower cover 1017, and a through hole portion 1017H may be formed on the lower cover 1017 at a position corresponding to the position of the control module 1016, specifically, the break portion 1161.

[0251] Referring to FIG. 15, a breakable cover 1018 may be attached to a through hole 1017H formed in the lower cover 1017.

[0252] The breakable cover 1018 can normally keep the passage hole 1017H closed.

[0253] 15, 19a, and 19b, the breakable cover 1018 is disposed opposite the breakable portion 1161, and can open and close the path through which an external force is applied to the breakable portion 1161.

[0254] On the other hand, if an error occurs in the operation of the alarm unit 1800 due to an unexpected situation after the liquid injection device 1010, specifically the attachment part 1012, is attached to the user, a situation may occur in which an unnecessary alarm is transmitted to the user.

[0255] Referring to Figures 19a and 19b, a user can remove the break cover 1018 covering the through hole portion 1017H from above the lower cover 1017, and use a tool T such as a rod to pass through the through hole portion 1017H and bring the tool T into contact with the control module 1016, specifically the break portion 1161.

[0256] The break cover 1018 according to one embodiment of the present invention can be formed of a thin film, and various modifications can be made, such as by a user not removing the break cover 1018 from above the lower cover 1017, but tearing or otherwise damaging the break cover 1018 while it is still attached, and contacting the tool T with the control module 1016, specifically the breaking portion 1161, located below the break cover 1018.

[0257] Referring to FIG. 19b, when tool T is in contact with breaking portion 1161, the user applies further force in one direction (downward from the perspective of FIG. 19b), causing a break in the area of ​​cutout portion 1162 which is formed with a relatively narrow width on breaking portion 1161. As breaking portion 1161 breaks, control line 1016L located at breaking portion 1161 where cutout portion 1162 is formed is broken, and the electrical connection between control module 1016 and alarm unit 1800 can be released.

[0258] By disconnecting the electrical connection between the control module 1016 and the alarm unit 1800, it is possible to prevent unnecessary alarms from continuing to be generated due to malfunction of the alarm unit 1800 after the liquid injection device 1010 is attached to the user.

[0259] However, without being limited to this, the control line 1016L can be formed not only as a path for an alarm signal, but also as a path for a drive signal of an internal device such as multiple sensor units, and various modifications are possible, such as a user being able to release the drive of an internal device by breaking the control line 1016L located at the break portion 1161.

[0260] Although not shown in the drawings, in another embodiment of the present invention, the break portion 1161 may have a hole formed therein, the hole having a common center with the through hole portion 1017H formed in the lower cover 1017.

[0261] The hole formed in breaking portion 1161 allows a tool T such as a rod to pass through passage hole portion 1017H formed in lower cover 1017 from the outside and straddle the hole formed in breaking portion 1161, guiding the direction of the external force applied to breaking portion 1161 while concentrating stress in the area where cutout portion 1162 is formed, making it possible for breaking portion 1161 to break easily.

[0262] The needle assembly 1100 can be attached to the first body 1013. The needle assembly 1100 can have the needle N and / or the cannula moved axially by rotating the sleeve 1110.

[0263] One end of the needle N is connected to the reservoir unit 1200 so that a medicinal solution can be delivered, and the other end is inserted into the cannula so that it can move along the cannula.

[0264] The cannula has a conduit shape capable of accommodating the needle N, so that the medicinal liquid discharged from the needle N can be injected into the user.

[0265] The cannula remains inserted into the user's skin, but the needle N rises and is separated from the subject's body. However, the cannula and the needle N form a path through which fluid can be transferred, and the medicinal liquid injected from the reservoir 1210 can be injected into the user through the needle N and the cannula.

[0266] The drug solution injection device 1010 allows a user to simply rotate the needle assembly 1100, insert the cannula into the subject's body, and start drug solution injection.

[0267] The reservoir unit 1200 is attached to the first body 1013 and the third body 1015, and is connected to the needle assembly 1100. The reservoir unit 1200 stores a medicinal liquid D in an internal space, and can quantitatively transfer the medicinal liquid to the needle N by moving a plunger 1230.

[0268] Referring to FIG. 21, the reservoir unit 1200 may include a reservoir 1210, a cap cover 1220, a plunger 1230, a sealing ring 1240, and a connector member 1250.

[0269] 22, the reservoir 1210 extends to a preset length in the longitudinal direction and can store a medicinal solution in an internal space. The reservoir 1210 can discharge the medicinal solution into the needle N by moving a plunger 1230. A cap cover 1220 is attached to an end of the reservoir 1210, and a rod 1410 and / or a connecting member 1520 can move through an opening (not shown) arranged in the cap cover 1220.

[0270] The reservoir 1210 may have an inlet end and an outlet end, into which a medicinal solution is injected, and into which a needle N is provided at the outlet end, through which the medicinal solution is discharged.

[0271] The plunger 1230 is disposed inside the reservoir 1210, and can move linearly by being driven by the driving module 1300 and the driving unit 1400. The advancement of the plunger 1230 can cause the medicinal liquid to be discharged from the internal space into the needle N.

[0272] The plunger 1230 may have an end 1231 and an inclined surface 1232. The end 1231 may move toward the front 1210F of the reservoir 1210 to move the drug solution. The inclined surface 1232 may be brought into close contact with the inclined portion of the reservoir 1210.

[0273] The plunger 1230 can be connected to a rearwardly extending connector member 1250. The connector member 1250 is mounted to the plunger 1230 and can be translated therewith by the translational movement of the plunger 1230.

[0274] The connector member 1250 is made of an electrically conductive material and may have a shaft shape. The connector member 1250 moves and comes into contact with the first sensor unit 1910A, thereby measuring the amount of stored drug and starting the operation of the liquid injector 1010.

[0275] The connector member 1250 is connected to the rear end of the plunger 1230 and can move together with the movement of the plunger 1230. In the figure, the connector member 1250 is shown to have a shaft shape, but is not limited to this and can have various forms that contact the first sensor unit 1910A and generate an electrical signal.

[0276] When the medicinal liquid is stored in the reservoir 1210 and the plunger 1230 is retracted, the connector member 1250 can retract together with the plunger 1230. Also, when the plunger 1230 is advanced so that the medicinal liquid is expelled from the reservoir 1210 into the needle N, the connector member 1250 can advance together with the plunger 1230.

[0277] Plunger 1230 is provided with seal portion 1240 at a portion that comes into contact with the inner wall of reservoir 1210, and can prevent leakage of the medicinal liquid when plunger 1230 moves.

[0278] The driving module 1300 may generate a driving force and transmit the driving force to the driving unit 1400. The driving force transmitted by the driving unit 1400 may cause the plunger 1230 to move linearly into the reservoir 1210 to discharge the drug solution.

[0279] When the drive units 1400 are engaged with each other by the clutch module 1500, the drive module 1300 rotates the drive wheel 1420 of the drive unit 1400, which causes linear movement of the rod 1410, which in turn causes movement of the plunger 1230. As the plunger 1230 moves, the connector member 1250 can move linearly with it.

[0280] The driving module 1300 may be any type of device having a liquid suction force and a liquid discharge force by electricity. For example, any type of pump, such as a mechanical displacement micropump or an electromagnetic movement micropump, may be used. The mechanical displacement micropump is a pump that uses the movement of a solid or fluid, such as a gear or a diaphragm, to generate a pressure difference to induce a fluid flow, and includes a diaphragm displacement pump, a fluid displacement pump, and a rotary pump. The electromagnetic movement micropump is a pump that uses electrical or magnetic energy directly to move a fluid, and includes an electrohydrodynamic pump (EHD), an electroosmotic pump, a magnetohydrodynamic pump, and an electrowetting pump.

[0281] The battery 1350 can supply electricity to the liquid injector 10 and activate each component. Although a pair of batteries 1350 is shown in the figure, the number of batteries is not limited to this and can be set in various ways depending on the capacity, range of use, and duration of use of the liquid injector 1010.

[0282] The battery 1350 is disposed adjacent to the driving unit 1400 and can supply electricity to the driving unit 1400. The battery 1350 is also connected to the control module 1016 and can measure data such as the number of rotations or the rotation speed of the driving unit 1400, the amount of medicinal liquid stored in the reservoir 1210, and the amount of medicinal liquid injected into the user, based on the electrical signal measured by the sensor unit.

[0283] 22, the drive unit 1400 is provided between the drive module 1300 and the reservoir unit 1200, and can move the plunger 1230 disposed in the reservoir 1210 by a driving force generated by the drive module 1300. However, the drive unit 1400 can move the plunger 1230 forward only when the rod 1410 and the drive wheel 1420 are coupled or connected by the clutch module 1500.

[0284] The rod 1410 is connected to the plunger 1230 and extends in one direction. The rod 1410 is inserted into an opening of the cap cover 1220, and the rod 1410 can move in the longitudinal direction of the reservoir 1210 to move the plunger 1230. The rod 1410 can have a thread shape on its surface. The rod 1410 is inserted into the connecting member 1520, and when dispensing the liquid medicine, the rod 1410 is connected to the driving wheel 1420 by the clutch module 1500, and the rod 1410 can be moved forward.

[0285] The driving wheel 1420 is drivingly connected to the driving module 1300 and can rotate when driven by the driving module 1300. The driving wheel 1420 has a first connection end 1421 and a second connection end 1422, and can have a space therein through which the rod 1410 can move. At least one of the first connection end 1421 and the second connection end 1422 is always drivingly connected to the driving module 1300 by the connector CN, so that the driving wheel 1420 can rotate when driven by the driving module 1300.

[0286] The clutch module 1500 may drivingly connect the drive module 1300 and the drive unit 1400. The clutch module 1500 may be disposed between the rod 1410 and the drive wheel 1420 and may include a coupler 1510 and a connecting member 1520.

[0287] The coupler 1510 is disposed on the outside of the connection member 1520, and is spaced apart from the connection member 1520 by a predetermined distance when inactive (FIGS. 22 and 23), and can connect the rod 1410 and the drive wheel 1420 when active. The coupler 1510 is a part that can apply a force to the outside of the connection member 1520 by elastic force, and is not limited to a specific shape. However, the following description will be focused on the case of a spring type for convenience of explanation.

[0288] The connecting member 1520 can be arranged so that at least a portion of it is inserted into the rod 1410. The connecting member 1520 is arranged so as to cover the outside of the rod 1410. The connecting member 1520 can connect the driving module 1300 and the rod 1410 by the operation of the coupler 1510.

[0289] In one embodiment, the rod 1410 and the connecting member 1520 may have a screw and a thread form, respectively. The rod 1410 may have a thread on an outer circumferential surface thereof, and the connecting member 1520 may have a thread on an inner circumferential surface thereof, so that they may be connected in a screw coupling form.

[0290] In one embodiment, the connecting member 1520 may be threaded on one end and unthreaded on the other end.

[0291] 22, a screw thread is formed on the inner circumferential surface of the first section L1 of the connecting member 1520, and only the first section L1 is screw-coupled to the rod 1410. In addition, the diameter of the first section L1 corresponds to the rod 1410 and may have a size of D1.

[0292] The second section L2 of the connecting member 1520 does not have a screw thread formed on the inner circumferential surface. In addition, the diameter D2 of the second section L2 may be set to be larger than the diameter D1 of the first section L1. In the second section L2, the connecting member 1520 does not contact the rod 1410.

[0293] The length of the first section L1 can be set so that the connecting member 1520 overlaps with the coupler 1510 when the connecting member 1520 moves rearward. When the plunger 1230 extends rearward, at least a portion of the first section L1 is disposed to overlap with the coupler 1510, i.e., at least a portion faces the coupler 1510. The length of the first section L1 can be set in the connecting member 1520 so that the coupler 1510 grips at least a portion of the first section L1 when the coupler 1510 is activated.

[0294] Since the rod 1410 is threadedly coupled only to the first section L1 of the connecting member 1520, the load caused by the threaded coupling between the connecting member 1520 and the rod 1410 can be reduced when the connecting member 1520 rotates to move the rod 1410 forward.

[0295] When the coupler 1510 is activated, the coupler 1510 grips the connecting member 1520, and the connecting member 1520 rotates with the rotation of the drive wheel 1420. Because the connecting member 1520 and the rod 1410 are threadedly coupled only at the first section L1, the connecting member 1520 can move the rod 1410 forward even if the drive wheel 1420 rotates with a small torque.

[0296] That is, since the rod 1410 and the connecting member 1520 are screw-coupled only in the first section L1, the plunger 1230 can be moved forward by the driving of the driving unit 1400 even with a somewhat weak force.

[0297] 13, a trigger member 1600 according to an embodiment of the present invention can generate a mechanical signal for injecting a medical solution from the medical solution injector 1010. The trigger member 1600 is rotatably disposed on one side of the third body 1015, and the trigger member 1600 rotates to start driving the driving module 1300, and at the same time, the clutch module 1500 can drive and connect the driving unit 1400.

[0298] The trigger member 1600 can rotate in one direction around the pivot shaft. At this time, the trigger member 1600 can apply force to the clutch module 1500 to couple the rod and the drive wheel 1420.

[0299] In particular, when a user rotates the needle assembly 1100, a knob of the needle assembly 1100 may apply a force to an end of the trigger member 1600, initiating rotation of the trigger member 1600. As the trigger member 1600 rotates, the trigger member 1600 applies a force to an end of the coupler 1510, which couples with the connecting member 1520 to activate the clutch module 1500.

[0300] 13, a needle cover assembly 1700 according to an embodiment of the present invention can be attached below the needle assembly 1100. The needle cover assembly 1700 can prime the air stored in the reservoir unit 1200 before injecting the medicinal liquid. When the medicinal liquid is injected into the reservoir 1210 through the medicinal liquid injector NI, the gas (air) remaining in the reservoir 210 can be discharged to the outside.

[0301] The needle cover assembly 1700 can include a first cover 1710 , a second cover 1720 , a filter member 1730 , and an adhesive layer 1740 .

[0302] First cover 1710 may be disposed at a lower portion of medical solution injector 1010. Second cover 1720 may be inserted into an opening of first cover 1710 to be assembled. An insertion protrusion 1711 may be disposed on one side of first cover 1710 to be inserted into second body 1014 to fix needle cover assembly 1700.

[0303] The second cover 1720 is assembled to the first cover 1710, and the needle N and / or the cannula may be aligned at the center. The second cover 1720 may have a storage space that is penetrated in the height direction at the center and stores the medicinal solution D.

[0304] The first cover 1710 has a higher rigidity than the second cover 1720. The first cover 1710 is a portion exposed to the outside and is made of a material having a slightly higher rigidity. The second cover 1720 is assembled to the first cover 1710 and is made of a material having a lower rigidity than the first cover 1710 because it is inserted into the opening of the third body 1015.

[0305] A protrusion 721 to be inserted into the third body 1015 may be provided at the center of the second cover 1720. In addition, the second cover 1720 may have a fixing protrusion 1722, which may be inserted into the first cover 1710, so that the first cover 1710 and the second cover 1720 may be assembled together.

[0306] The filter member 1730 is attached to the second cover 1720. The filter member 1730 is disposed under the storage space of the second cover 1720, and gas such as air passes through the filter member 1730, but liquid such as a medicinal solution does not pass through the filter member 1730. Therefore, air discharged from the needle N passes through the filter member 1730 and is discharged to the outside, but the medicinal solution discharged from the needle can be stored in the storage space defined by the second cover 1720 and the filter member 1730.

[0307] The filter member 1730 may change shape depending on the amount of medicinal liquid stored in the storage space. For example, when the storage space is filled with medicinal liquid, the filter member 1730 expands downward, allowing the user to recognize that the medicinal liquid has flowed into the needle cover assembly 1700.

[0308] An adhesive layer 1740 is disposed on one side of the needle cover assembly 1700 and is capable of adhering the needle cover assembly 1700 to the attachment portion 1012 .

[0309] The alarm unit 1800 is disposed inside or outside the liquid injector 1010 and can inform a user of normal or malfunction of the liquid injector 1010. The alarm unit 1800 can transmit an alarm to an external user by generating a warning sound or light.

[0310] The alarm unit 1800 according to an embodiment of the present invention is disposed under the housing 1011 and is electrically connected to a control module 1016, which is a circuit board. A control line 1016L, which is a path for transmitting an electrical signal to the alarm unit 1800, may be formed on the control module 1016.

[0311] The control line 1016L, which is the path for such an electrical signal, is located on a break portion 1162 that protrudes outward from the control module 1016, and when the break portion 1162 is broken by an external force, the path for the electrical signal formed on the break portion 1162 is also cut off, and the electrical connection between the alarm unit 1800 and the control module 1016 can be released.

[0312] 19a and 19b, the control line 1016L can be positioned close to one surface (the upper surface with reference to FIG. 19a) facing the through hole portion 1017H on the break portion 1161 based on the center at the height of the break portion 1161.

[0313] As a result, when a user applies an external force to breaking portion 1161 using tool T or the like, even if breaking portion 1161 that tool T comes into contact with is not completely cut, control line 1016L arranged close to the surface of breaking portion 1161 is broken first, and the electrical connection between alarm unit 1800 and control module 1016 can be released. As a result, if an alarm continues to be generated from alarm unit 1800 due to an unexpected malfunction of alarm unit 1800 while liquid injector 1010 is attached to the user, the user can use tool T such as a stick to push the portion where breaking portion 1161 is formed in one direction (downward with reference to FIG. 19b) to break breaking portion 1161, and the electrical connection between control module 1016 and alarm unit 1800 can be released.

[0314] However, without being limited to this, the control line 1016L can be formed not only as a path for an alarm signal, but also as a path for a drive signal of an internal device such as multiple sensor units, and various modifications are possible, such as a user being able to release the drive of an internal device by breaking the control line 1016L located at the break portion 1161.

[0315] In addition, not only in the event of an unexpected malfunction of the alarm unit 1800, but also in the event that the alarm unit 1800 is operating normally, if the amount of medicinal solution D falls short of a preset amount during consumption, the alarm unit 1800 may be activated. However, since the alarm unit 1800 continues to operate until the capacity of the battery 1350 is completely consumed, a situation may arise in which it is necessary to deactivate the alarm unit 1800.

[0316] In this case, the user can break the breaker 1161 in the manner described above, thereby releasing the electrical connection between the control module 1016 and the alarm unit 1800 .

[0317] 20, a plurality of sensor units 1910 and 1920 can measure the operation of the liquid injector 1010. The plurality of sensor units 1910 and 1920 can measure the amount of liquid stored in the reservoir 1210, and can measure whether the driving module 1300 is driven, whether the driving unit 1400 is driven, the rotation angle of the driving wheel 1420, the moving distance of the plunger 1230, etc.

[0318] Each sensor unit may have multiple contact tips that may measure the presence or absence of electrical contact to measure respective events or data.

[0319] The position of any one of the contact ends can be changed by contact with another component, and when the contact with the other component is released, the contact end can return to its original position by a restoring force.

[0320] 20 and 21, the encoder unit 1930 is disposed at one end of the drive unit 1400 and can measure the rotation of the drive unit 1400. The encoder unit 1930 can measure the rotation of the drive wheel 1420.

[0321] The operation principle and effects of the liquid injector according to the embodiment of the present invention will now be described.

[0322] <Drug storage stage>

[0323] 11 and 12, a user injects a liquid medicine into reservoir unit 1200 of liquid medicine injector 1010 using an external liquid medicine injector (not shown).

[0324] 22, before the drug solution is injected, the plunger 1230 is disposed at the front end of the reservoir 1210, and the rod 1410 is assembled to the connecting member 1520 at the rear end of the plunger 1230. At this time, the coupler 1510 does not grip the connecting member 1520, so the drive wheel 1420 is not connected to the rod 1410.

[0325] A user puts a liquid medicine D to be injected into a liquid medicine injector (not shown) and inserts the liquid medicine injector into the inlet end of the reservoir unit 1200. At this time, air remaining inside the reservoir 1210 can be primed.

[0326] In detail, during the assembly process of reservoir unit 1200, air remains between reservoir 1210 and plunger 1230. If a medicinal liquid is injected while air remains in reservoir 1210, there is a risk that the air will also be injected into the user, so an operation to remove the air (priming operation) is required.

[0327] When the medicinal liquid starts to flow from the medicinal liquid injector into the reservoir 1210, the medicinal liquid flows between the inner surface of the reservoir 1210 and the plunger 1230, and pushes out the remaining gas into the needle N. At this time, the gas can move along the guide groove 1211. That is, the gas remaining inside the reservoir 1210 is discharged to the needle N along the guide of the guide groove 211 by the medicinal liquid D flowing in. The gas that has passed through the needle N moves to the needle cover assembly 1700, passes through the filter member 1730 of the needle cover assembly 1700, and is discharged to the outside. Due to the guide of the guide groove 1211, the gas remaining inside the reservoir 1210 is quickly discharged to the outside, and the gas in the reservoir 1210 can be removed.

[0328] Referring to FIG. 11, a user can be notified via a user terminal 1020, etc., that a preset reference amount of liquid medicine D has been stored in a reservoir 1210, and the user can be notified in advance to use the liquid medicine injector 1010.

[0329] When the plunger 1230 passes point P-1 due to the injection of the medicinal liquid D, the connector member 1250 contacts the first contact end 1911 at the first position P1. Then, when the plunger 1230 passes point P-2, the connector member 1250 contacts the second contact end 1912 at the second position P2.

[0330] In one embodiment, the first mode is activated when the connector member 1250 electrically connects the first contact end 1911 and the second contact end 1912. The first mode is a mode for waking up the liquid injection device 1010, and the liquid injection device 1010 can be pre-heated in advance so that the liquid injection device 1010 can be activated immediately after the liquid injection device 1010 is attached to a user.

[0331] In addition, the user can be notified via the user terminal 1020 or the like that the liquid medicine D is stored in the reservoir 1210 at a first reference amount, and the user can be notified in advance to use the liquid medicine injector 1010 .

[0332] In another embodiment, when the connector member 1250 is connected to the first contact end 1911, the control module 1016 may recognize it as a first event, and when the connector member 1250 is connected to the second contact end 1912, the control module 1016 may recognize it as a second event. That is, when the connector member 1250 is in contact with each of the other contact ends, different events may be recognized and the events may be transmitted to the user.

[0333] <Attachment stage>

[0334] 23, when the drug D is stored in the reservoir 1210, the liquid injection device 1010 is attached to the user. Since the gas in the reservoir 1210 is removed (the priming operation is completed) through the needle cover assembly 1700 in the above-mentioned drug storage step, the needle cover assembly 1700 is removed from the liquid injection device 1010.

[0335] A user attaches the drug solution injection device 1010 to the user, and inserts the needle N and the cannula into the skin by rotating the needle assembly 1100. The needle N is inserted into the skin together with the cannula, and the insertion of the cannula into the skin can be guided.

[0336] The needle N is then withdrawn from the skin but remains connected to the cannula. As the user further rotates the needle assembly 1100, the needle N moves to the top with the cannula still inserted into the skin. The cannula and the needle N are at least partially connected to form and maintain a pathway through which the medical fluid can travel.

[0337] <Drug injection stage - 2nd mode>

[0338] Substantially simultaneously with the operation of inserting the cannula and the needle N into the user, the driving module 1300 and the driving unit 1400 are driven. In the second mode, the medical solution injection device 1010 can inject the medical solution D into the user according to the set period and injection amount.

[0339] When the user rotates the needle assembly 1100 to insert the needle N and cannula into the skin, the trigger unit 1600 actuates the drive module 1300 .

[0340] When the user rotates the needle assembly 1100, the trigger unit 1600 can activate the coupler 1510. When the coupler 1510 grips the outside of the connecting member 1520, the drive wheel 1420, the coupler 1510 and the connecting member 1520 are integrated into a unitary body. Thus, when the drive wheel 1420 rotates, the connecting member 1520 rotates with it, causing the rod 1410 to move forward.

[0341] When the rod 1410 moves forward, the plunger 1230 also moves forward, and the drug solution can be discharged into the needle N. Therefore, the drug can be injected into the user according to the set driving cycle and driving speed of the driving module 1300.

[0342] As the drive wheel 1420 rotates, the encoder unit 1930 can measure the rotation angle, rotation speed, etc. of the drive wheel 1420.

[0343] The encoder unit 1930 can measure an electrically connected signal and / or an electrically released signal to measure data related to the rotation of the drive wheel 1420. The control module 1016 can calculate the rotation angle and rotation speed of the drive wheel 1420 based on the data measured by the encoder unit 1930, and can calculate the moving distance of the plunger 1230 and the discharge amount of the medicinal liquid based on the calculated rotation angle and rotation speed.

[0344] <Drug Injection Phase-Third Mode>

[0345] When the plunger 1230 is in the P-2 position and the connector member 1250 is in the second position P2, the first contact end 1911 and the second contact end 1912 of the first sensor unit 1910 are electrically separated from each other.

[0346] The control module 1016 activates the third mode when the first sensor unit 1910 is electrically deactivated.

[0347] In a third mode, the control module 1016 may send an alarm signal to the user via the user terminal 1020, the controller 1030 and / or the alarm unit 1800 that the amount of stored medicinal fluid falls within a second reference amount.

[0348] The second reference amount can be defined as the amount of medicinal liquid recognized by the driving module 1300 at the time of driving in the drug injection stage. The control module 1016 notifies the user that the amount of medicinal liquid remaining in the reservoir 1210 is the predetermined second reference amount, and the user can prepare to replace the drug liquid injection device 1010.

[0349] In one embodiment, the first reference amount may be set to the same amount of medicinal liquid as the second reference amount. Since the position of the plunger 1230 in the reservoir 1210 is the same when the connector member 1250 contacts or releases contact with the second contact end 1912 due to the forward or backward movement of the plunger 1230, the first reference amount and the second reference amount may be set to the same amount.

[0350] In another embodiment, the first reference amount may be set to a liquid medicine storage amount larger than the second reference amount. The first reference amount is a reference value set for operation in the first mode, and may be set to be substantially equal to the amount of liquid medicine stored in the reservoir 1210. The second reference amount is an amount of liquid medicine recognized by the operation module 1300 at the start of the third mode, and may be set to be less than the amount of liquid medicine actually remaining in the reservoir 1210 to provide a margin.

[0351] Since the second reference amount is set to be less than the amount of liquid medicine stored in the actual reservoir 1210, the actual reservoir 1210 has a margin corresponding to the difference between the actual remaining amount of liquid medicine and the second reference amount. Even if the liquid medicine injector 1010 notifies the user that there is no liquid medicine left, the liquid medicine remaining in the reservoir 1210 can be further used, thereby preventing sudden liquid medicine cutoff or accidents and improving the safety of the liquid medicine injector 1010.

[0352] Since the remaining amount of medicinal liquid is important in the third mode, the control module 1016 can calculate the injected amount of medicinal liquid and the remaining amount of medicinal liquid in the reservoir 1210 very precisely in the third mode. In the third mode, the control module 1016 accurately measures the rotation angle of the drive wheel 1420 and the moving distance of the plunger 1230 based on the dates acquired by the second sensor unit 1920 and the encoder unit 1930, and can precisely calculate the discharge amount of medicinal liquid and the amount of medicinal liquid remaining in the reservoir 1210. The remaining amount of medicinal liquid accurately calculated in the third mode is transmitted to the user in real time, allowing the user to recognize danger.

[0353] In one embodiment, the liquid medicine injector 1010 can accurately calculate the amount of liquid medicine remaining in the reservoir 1210 only in the third mode. In the second mode, the amount of liquid medicine in the reservoir 1210 is not precisely measured because the amount of liquid medicine stored in the reservoir 1210 exceeds a predetermined range (i.e., a second reference amount), but in the third mode, the amount of liquid medicine stored in the reservoir 1210 can be quantitatively calculated. The amount of liquid medicine stored in the liquid medicine injector 1010 is precisely calculated only when an alarm is required, so that the control load of the liquid medicine injector 1010 can be reduced.

[0354] The liquid medicine injector 1010 according to an embodiment of the present invention can measure the amount of liquid medicine stored in the reservoir 1210. The first sensor unit 1910 measures the amount of liquid medicine stored in the reservoir 1210 and sets the operation of the liquid medicine injector 1010. When the plunger 1230 moves linearly inside the reservoir 1210, the connector member 1250 connected to the plunger 1230 also moves together and can sense the amount of liquid medicine stored in the reservoir 1210 while contacting or releasing the contact with the first sensor unit 1910.

[0355] In the liquid injection device 1010 according to an embodiment of the present invention, when the reservoir is filled with liquid medicine to a certain extent, the liquid medicine is preheated to increase the operating efficiency. When the first sensor unit 1910 senses that the amount of liquid medicine injected into the reservoir 1210 is equal to or exceeds a first reference amount, the liquid injection device 1010 prepares to operate some components in a first mode, and can immediately inject liquid medicine when the liquid injection device 1010 is attached to a user.

[0356] The liquid medicine injector 1010 according to an embodiment of the present invention can sense when the amount of liquid medicine stored in the reservoir 1210 falls below a predetermined range and notify the user. When the first sensor unit 1910 senses that the amount of liquid medicine stored in the reservoir 1210 falls below or equal to a second reference amount, the liquid medicine injector 1010 can drive the second sensor unit 1920 and / or the encoder unit 1930 to precisely calculate the amount of liquid medicine remaining in the reservoir 1210 and transmit information about the amount to the user.

[0357] 12 to 18, 19a and 19b, during the use of liquid injector 1010 according to one embodiment of the present invention, an unexpected situation may occur that causes alarm unit 1800 to malfunction.

[0358] At this time, the user can remove all or a part of attachment portion 1012 covering liquid injector 1010, specifically, one side (the lower side in FIG. 12) of housing 1011.

[0359] After removing the attached portion 1012, the user can remove the breakable cover 1018 covering the through hole portion 1017H formed on the lower cover 1017 exposed to the outside.

[0360] 15 to 17, 19a and 19b, the through hole portion 1017H formed on the lower cover 1017 may be formed at a position corresponding to the break portion 1161 formed protruding outwardly on the control module 1016 arranged inside the housing 1011.

[0361] A control line 1016L, which is a path for electrical signals between the control module 1016 and the alarm unit 1800, may be disposed in the break 1161 formed in the control module 1016. A boundary is formed in the break 1161, and a notch 1162 is formed in the shape of a groove. A plurality of such notches 1162 may be provided and formed on both sides of the longitudinal center axis of the break 1161.

[0362] The control line 1016L can be located on a break portion 1161 formed on the control module 1016, where a notch 1162 is formed. This breaks the break portion 1161, breaks the control line 1016L located on the break portion 1161, and disconnects the electrical connection between the alarm unit 1800 and the control module 1016.

[0363] 17, 19a, and 19b, by forming the cutout portion 1162, the width of a certain section on the fracture portion 1161 can be formed relatively narrow, and when an external force is applied to the remaining area of ​​the fracture portion 1161, which is formed relatively wide, stress may be concentrated in the area where the cutout portion 1162 is formed, causing the fracture.

[0364] 18, 19a, and 19b, the first body 1013 may have a receiving portion 1131 and a supporting portion 1132 formed in an area opposite the control module 1016, specifically, the breakage portion 1161.

[0365] The receiving portion 1131 is disposed such that the bottom surface thereof is spaced a predetermined distance from the control module 1016, specifically, from the break portion 1161, and a space may be formed between the break portion 1161 and the bottom surface thereof.

[0366] By forming a space between breaking portion 1161 and the bottom surface of storage portion 1131, an external force is applied to breaking portion 1161 via tool T in one direction (from top to bottom based on Figure 19b), and a space can be secured in which breaking portion 1161 can be folded until it breaks. This has the effect of enabling the pieces of breaking portion 1161 to be stored in storage portion 1131 without moving around inside housing 1011 even after breaking.

[0367] 18, 19a, and 19b, a support portion 1132 may be formed to protrude from a predetermined area of ​​the breaking portion 1161 on the bottom surface of the accommodating portion 1131, specifically, toward the area where the cutout portion 1162 is formed.

[0368] Since the support portion 1132 protrudes from the bottom surface of the storage portion 1131 and can come into contact with the area where the notch portion 1162 is formed, the tool T contacts and supports the area where the notch portion 1162 is formed in the opposite direction (from bottom to top based on FIG. 19b) to the direction in which an external force is applied to the breaking portion 1161 by the tool T. This has the effect of easily breaking the breaking portion 1161 with a relatively small force. Breaking the breaking portion 1161 releases the electrical connection between the control module 1016 and the alarm unit 1800, and has the effect of forcibly releasing the alarm unit 1800 from continuing to emit a visual or audible alarm such as a warning sound or light due to a malfunction or the like.

[0369] The breakable cover 1018 has a diameter relatively larger than the through hole portion 1017H formed in the lower cover 1017 and is attached to the lower cover 1017, covering the through hole portion 1017H. This has the effect of preventing the control module 1016, specifically the breakable portion 1161, located on the upper side of the lower cover 1017 inside the housing 1011 (with reference to Figure 13) from being damaged due to user carelessness, etc., when the alarm unit 1800 is operating normally.

[0370] In one embodiment of the present invention, a bonding means may be applied to one surface of the broken cover 1018 facing the lower cover 1017, and the bonding means allows the broken cover 1018 to cover the passage hole portion 1017H, thereby blocking the movement path to the broken portion 1161 positioned opposite the lower cover 1017.

[0371] However, the present invention is not limited to this, and various modifications are possible within the technical concept of the breakable cover 1018 being positioned and fixed to the lower cover 1017 .

[0372] In one embodiment of the present invention, the liquid injection device 1010 is disposed inside the housing 1011. A predetermined region of the control module 1016, specifically, the breaking portion 1161, which is electrically connected to the alarm unit 1800, is broken by an external force when necessary, such as in the event of a malfunction of the alarm unit 1800, to disconnect the electrical connection between the control module 1016 and the alarm unit 1800. This has the effect of eliminating the inconvenience caused to the user by the continuous provision of an alarm.

[0373] Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely an example, and those skilled in the art will recognize that various modifications and equivalent alternative embodiments are possible therefrom. Therefore, the true scope of protection of the present invention should be determined only by the appended claims. [Industrial Applicability]

[0374] According to the present invention, a liquid medicine injector is provided. The embodiments of the present invention can be applied to industrial instruments for injecting liquid medicine into the body of a patient.

Claims

1. a housing having an interior that is at least partially open at a first time point and has the interior sealed at a second time point that is later than the first time point; a needle assembly disposed within the housing, the needle assembly being at least partially ejected to the outside of the housing by a user's operation at a third time point that is later than the second time point; a reservoir containing a medical solution, in fluid communication with the needle assembly, and sealed within the housing after the second time point; a drive module interposed between the needle assembly and a reservoir, sealed within the housing after the second time point, and configured to generate a drive force for ejecting the medicinal liquid after the third time point; a battery module received within the housing and sealed within the housing after the second time point; a control module that is accommodated in the housing, that is sealed in the housing after the second time point, that is electrically connected to the battery module after the third time point, and that controls the drive module; at least one electronic module contained within the housing and electrically connected to the control module; the housing includes an inlet hole that is open at the first time and that is sealed at the second time; The electronic module is configured to be electrically connected to an external electronic device through the inlet hole at the first time point and to be electrically disconnected from the external electronic device at the second time point; The battery module is cut off from use at the first time point and the second time point.

2. The chemical liquid injector according to claim 1 , further comprising a trigger module configured to control the driving module so as not to operate at least at the first time point and the second time point.

3. a transmission module that transmits the driving force to a plunger disposed inside the reservoir; The chemical liquid injector according to claim 1 , further comprising: a trigger module configured to control the transmission module so as not to operate at least at the first time point and the second time point.

4. The liquid injector according to claim 1 , wherein the control module is electrically disconnected from the battery module at the first time point.

5. a housing having an interior that is at least partially open at a first time point and has the interior sealed at a second time point that is later than the first time point; a needle assembly housed within the housing and at least a portion of the needle assembly is discharged outside the housing at a third time point that is later than the second time point; a reservoir contained within the housing, the reservoir containing a medical solution and in fluid communication with the needle assembly; a plurality of electrically controllable electronic modules contained within the housing; a battery module electrically connected to the plurality of electronic modules; an activator electrically connected to at least one of the electronic modules at the first time; the housing includes an inlet hole that is open at the first time and that is sealed at the second time; The electronic module is configured to be electrically connected to an external electronic device through the inlet hole at the first time point and to be electrically disconnected from the external electronic device at the second time point; The battery module is cut off from use at the first time point and the second time point.

6. the electronic module includes a transmission module interposed between the needle assembly and a reservoir for transmitting the medicinal solution to the needle assembly; The chemical liquid injector according to claim 5 , further comprising: a trigger module configured to control the transmission module so as not to operate at least at the first time point and the second time point.

7. a drive module for transmitting a drive force to a plunger disposed inside the reservoir; The liquid injector according to claim 5 , further comprising: a trigger module configured to control the driving module so as not to operate at least at the first time point and the second time point.

8. The liquid injector according to claim 5 , wherein the electronic module includes a communication unit that is electrically connected to the activator at the first time point and is electrically connected to the battery module at the third time point.

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