KR102697668B1 - Needle assembly and drug injection device comprising the same - Google Patents

Abstract

The present invention provides a drug injection device and a drug injection system, comprising: a base body; a reservoir mounted on the base body and having a plunger disposed therein; a rod connected to the plunger; a driving wheel disposed on the outside of the rod; a coupler disposed between the rod and the driving wheel and selectively coupling the rod and the driving wheel; and a rotating member having an antenna pattern in at least a portion of the region and having at least one end that applies force to the coupler or applies force to the driving wheel when rotated.

Description

{Needle assembly and drug injection device comprising the same}

The present invention relates to a drug injection device and a drug injection system.

In general, drug injection devices such as insulin injection devices are used to inject drugs into a patient's body. These drug injection devices are sometimes used by medical professionals such as doctors or nurses, but in most cases, they are used by the patients themselves or ordinary people such as their guardians. Diabetic patients, especially pediatric diabetics, need to inject drugs such as insulin into their bodies at set intervals. Therefore, a drug injection device in the form of a patch that is attached to the body for a set period of time is being developed. This drug injection device can be used by attaching it to the patient's body, such as the abdomen or waist, in the form of a patch for a set period of time.

When attached to the human body, the drug injection device must be comfortable to wear, convenient to use, durable, and operate at low power. In particular, since the drug injection device is attached to the patient's skin and used, the user must be able to simply and conveniently insert a needle or cannula into the patient's skin.

Patent Publication No. 10-2021-0040712 (published on April 14, 2021)

The present invention provides a drug injection device and a drug injection system capable of transmitting and receiving signals with an external device.

One aspect of the present invention provides a liquid injection device including a base body, a reservoir mounted on the base body and having a plunger disposed therein, a rod connected to the plunger, a driving wheel disposed on the outside of the rod, a coupler disposed between the rod and the driving wheel and selectively coupling the rod and the driving wheel, and a rotating member having an antenna pattern in at least a portion of the region and having at least one end that applies force to the coupler or applies force to the driving wheel when rotated.

In addition, the rotating member may have a shaft connected to a circuit board disposed inside the liquid injection device, and a body portion connected to the shaft and on which the antenna pattern is disposed.

Additionally, the rotating member may be connected to the antenna pattern, and a signal line for transmitting a signal from the antenna pattern to the circuit board may be embedded therein.

Additionally, the rotating member may have the signal line extend along a shaft of the rotating member.

In addition, the rotating member can apply force to the coupler according to the user's operation, and the coupler can connect the load and the driving wheel.

In addition, it further includes a driving module that generates a driving force, and the rotating member receives the driving force from the driving module, so that the first arm and the second arm can alternately apply force to the driving wheel.

Additionally, the antenna pattern can receive a signal from the outside and transmit the signal to the circuit board.

Another aspect of the present invention provides a drug injection system, comprising: a drug injection device attached to a user and configured to deliver a drug; and a controller configured to transmit and receive data with the drug injection device, wherein the drug injection device comprises: a base body; a reservoir mounted on the base body and having a plunger disposed therein; a rod connected to the plunger; a driving wheel disposed on the outside of the rod; a coupler disposed between the rod and the driving wheel and selectively coupling the rod and the driving wheel; and a rotating member having an antenna pattern in at least a portion of the region and having at least one end that applies force to the coupler or applies force to the driving wheel when rotated.

In addition, the rotating member can apply force to the coupler according to the user's operation, and the coupler can connect the load and the driving wheel.

In addition, the liquid injection device further includes a driving module that generates a driving force, and the rotating member receives the driving force from the driving module, so that the first arm and the second arm can alternately apply force to the driving wheel.

The drug injection device and drug injection system according to the present invention have high signal transmission efficiency and can have a compact structure. The drug injection device has an antenna pattern, so that it can effectively transmit signals to an external device.

The drug injection device and the drug injection system according to the present invention do not have a separate part for having an antenna pattern, and are arranged on a rotating member for driving the drug injection device, so that the volume of the drug injection device can be minimized. In addition, the rotating member on which the antenna pattern is arranged is spaced apart from the control module, which is a circuit board, so that constraints on the direction of signal radiation from the antenna pattern can be reduced. In addition, the rotating member on which the antenna pattern is arranged is spaced apart from the user to whom the drug injection device is attached, so that the transmission efficiency of the signal can be increased. Of course, the scope of the present invention is not limited by these effects.

FIG. 1 is a block diagram illustrating a drug injection system according to one embodiment of the present invention.
FIG. 2 is a perspective view illustrating a drug injection device according to one embodiment of the present invention.
Figure 3 is an exploded perspective view of the drug injection device of Figure 2.
Figure 4 is a plan view illustrating a part of the configuration of Figure 3.
Figure 5 is a drawing showing an enlarged view of part A of Figure 4.
Figures 6 to 9 are drawings illustrating the operation of the reservoir assembly of Figure 3.
FIG. 10 is a perspective view illustrating the first rotation member of FIG. 3.
Figure 11 is a drawing conceptually illustrating the arrangement of the first rotating member of Figure 10.
Fig. 12 is a drawing showing a part of the liquid injection device of Fig. 3.
Figure 13 is a drawing conceptually illustrating the arrangement of the second rotating member of Figure 12.

The present invention can be modified in various ways and has various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and the methods for achieving them will become clear with reference to the embodiments described in detail below together with the drawings. However, the present invention is not limited to the embodiments disclosed below, and can be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same drawing reference numerals and redundant descriptions thereof are omitted.

In the examples below, singular expressions include plural expressions unless the context clearly indicates otherwise.

In the examples below, terms such as “include” or “have” mean that a feature or component described in the specification is present, and do not exclude in advance the possibility that one or more other features or components may be added.

In some embodiments, where the embodiments are otherwise feasible, a particular process sequence may be performed in a different order than the order described. For example, two processes described in succession may be performed substantially simultaneously, or in a reverse order from the order described.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the sizes and thicknesses of each component shown in the drawings are arbitrarily shown for convenience of explanation, and therefore the following embodiments are not necessarily limited to what is shown.

FIG. 1 is a block diagram illustrating a drug injection system (1) according to one embodiment of the present invention.

Referring to FIG. 1, the drug injection system (1) may be equipped with a drug injection device (10), a user terminal (20), a controller (30), and a bio-information sensor (40). The drug injection system (1) may enable a user to drive and control the system using the user terminal (20), and may periodically inject a drug from the drug injection device (10) based on blood sugar information monitored by the bio-information sensor (40).

The drug injection device (10) also performs the function of injecting drugs, such as insulin, glucagon, anesthetics, painkillers, dopamine, growth hormones, smoking cessation aids, etc., to be injected into the user based on data sensed by the biometric information sensor (40).

In addition, the liquid injection device (10) can transmit device status messages including information on the remaining battery capacity of the device, whether the device has booted successfully, whether the injection has been successful, etc., to the controller (30). The messages transmitted to the controller (30) can be transmitted to the user terminal (20). Alternatively, the controller (30) can transmit improved data processed from the received messages to the user terminal (20).

In one embodiment, the drug injection device (10) may be provided separately from the bio-information sensor (40) and installed at a distance from the subject. In another embodiment, the drug injection device (10) and the bio-information sensor (40) may be provided in one device.

In one embodiment, the drug injection device (10) can be mounted on the user's body. In another embodiment, the drug injection device (10) can also be mounted on an animal to inject the drug.

The user terminal (20) can receive an input signal from a user to drive and control the drug injection system (1). The user terminal (20) can generate a signal to drive the controller (30) and control the controller (30) to drive the drug injection device (10). In addition, the user terminal (20) can display biometric information measured from the biometric information sensor (40) and display status information of the drug injection device (10).

The user terminal (20) refers to a communication terminal that can be used in a wired or wireless communication environment. For example, the user terminal (20) may be a smart phone, a tablet PC, a PC, a smart TV, a mobile phone, a PDA (personal digital assistant), a laptop, a media player, a micro server, a GPS (global positioning system) device, an e-book terminal, a digital broadcasting terminal, a navigation device, a kiosk, an MP3 player, a digital camera, a home appliance, a device equipped with a camera, and other mobile or non-mobile computing devices. In addition, the user terminal (2) may be a wearable device such as a watch, glasses, a hair band, and a ring equipped with a communication function and a data processing function. However, as described above, a terminal equipped with an application capable of Internet communication may be borrowed without limitation.

The user terminal (20) can be connected one-to-one with a pre-registered controller (30). The user terminal (20) can be connected to the controller (30) in an encrypted manner to prevent the controller (30) from being driven and controlled by an external device.

In one embodiment, the user terminal (20) and the controller (30) may be provided as separate devices, each separately. For example, the controller (30) may be provided to a subject equipped with a drug injection device (10), and the user terminal (20) may be provided to the subject or a third party. The user terminal (20) may be driven by a guardian, thereby increasing the safety of the drug injection system (1).

In another embodiment, the user terminal (20) and the controller (30) may be provided as a single device. The user terminal (20) and the controller (30) provided as a single device may communicate with the drug injection device (10) to control the injection of the drug.

The controller (30) performs a function of transmitting and receiving data with the drug injection device (10), and can transmit a control signal related to the injection of a drug such as insulin to the drug injection device (10), and receive a control signal related to the measurement of a biological value such as blood sugar from a biological information sensor (40).

The controller (30) can, for example, transmit a command request to measure the user's current condition to the liquid injection device (10) and receive measurement data from the liquid injection device (10) in response to the command request.

The biometric sensor (40) can perform a function of measuring the user's biometric values such as blood sugar level, blood pressure, and heart rate depending on the purpose. Data measured by the biometric sensor (40) can be transmitted to the controller (30), and the drug cycle and/or injection amount can be set based on the measured data. Data measured by the biometric sensor (40) can be transmitted to the user terminal (20) and displayed.

For example, the biometric information sensor (40) may be a sensor that measures the blood sugar level of the subject. It may be a continuous glucose monitoring (CGM) sensor. The continuous glucose monitoring sensor may be attached to the subject and continuously monitor the blood sugar level.

The user terminal (20), the controller (30), and the drug injection device (10) may perform communication using a network. For example, the network includes a local area network (LAN), a wide area network (WAN), a value added network (VAN), a mobile radio communication network, a satellite communication network, and a combination thereof, and is a comprehensive data communication network that allows each network component to communicate smoothly with each other, and may include wired Internet, wireless Internet, and a mobile radio communication network. In addition, the wireless communication may include, but is not limited to, wireless LAN (Wi-Fi), Bluetooth, Bluetooth low energy, Zigbee, WFD (Wi-Fi Direct), UWB (ultra wideband), infrared communication (IrDA, infrared Data Association), NFC (Near Field Communication), 5G, etc.

The drug injection device (10) can transmit and receive signals with any one of a user terminal (20), a controller (30), and a bio-information sensor (40). The drug injection device (10) has an antenna pattern arranged on a component arranged inside, and can transmit or receive signals with an external user terminal (20), a controller (30), and a bio-information sensor (40) through the antenna pattern.

FIG. 2 is a perspective view illustrating a drug injection device (10) according to one embodiment of the present invention, and FIG. 3 is an exploded perspective view of the drug injection device (10) of FIG. 2.

Referring to FIGS. 2 and 3, a drug injection device (10) is attached to a user who is to inject a drug, and can inject the drug stored inside in a set amount to the user.

The drug injection device (10) can be used for various purposes depending on the type of drug to be injected. For example, the drug may include an insulin-based drug for diabetic patients, and may include other types of drugs such as drugs for the pancreas, drugs for the heart, and other types of drugs. However, for the convenience of explanation, the following description will focus on an example in which the drug is insulin.

One embodiment of the drug injection device (10) may include a housing (11) covering the outside and an attachment portion (12) positioned adjacent to the user's skin. The drug injection device (10) includes a plurality of components arranged in an internal space between the housing (11) and the attachment portion (12). A separate bonding means (not shown) may be further interposed between the attachment portion (12) and the user's skin, and the drug injection device (10) may be fixed to the skin by the bonding means.

The drug injection device (10) may include a needle assembly (100), a reservoir unit (200), a driving module (300), a battery (350), a driving unit (400), a clutch unit (500), a first rotating member (600), a needle cover assembly (700), an alarm unit (800), a second rotating member (900), and a plurality of sensor units.

The liquid injection device (10) may have a base body that forms a frame in which at least one body supports internal components. The base body is a component that sets the position of the internal components of the liquid injection device (10) and may be set in various ways according to the shape, arrangement, etc. of the components of the liquid injection device (10). In addition, the base body may be provided in a single or multiple units. However, for the convenience of explanation, the following description will focus on an embodiment in which the base body has a first body (13), a second body (14), and a third body (15).

The first body (13) is arranged below the housing (11), and a needle assembly (100), a reservoir unit (200), a driving module (300), a battery (350), etc. can be supported in each opening or groove. The second body (14) is arranged below the first body (13) and can be connected to the attachment part (12). The second body (14) can cover the lower part of the liquid injection device (10). The third body (15) is arranged above the first body (13), and a reservoir unit (200), a driving module (300), a battery (350), a driving unit (400), etc. can be supported in each opening or groove.

A control module (16) may be placed inside the drug injection device (10) (see FIG. 11 and FIG. 13). A control module (16), which is a circuit board, is placed under the second body (14) and can control the overall operation of the drug injection device (10). The control module (16) is in electrical contact with the driving module (300), the battery (350), the alarm unit (800), and a plurality of sensor units, and can control the operation of these.

The needle assembly (100) can be mounted on the first body (13). The needle assembly (100) can move the needle (N) and/or the cannula (not shown) axially by rotation of the sleeve.

One end of the needle (N) is connected to the reservoir unit (200) so that the drug can be delivered, and the other end is inserted into the cannula so that it can move along the cannula.

Since the cannula has a tubular shape that can accommodate a needle (N), the drug liquid discharged from the needle (N) can be injected into the user.

The cannula remains inserted into the user's skin, but the needle (N) rises and separates from the target. However, the cannula and the needle (N) form a path through which the fluid moves, so that the drug injected from the reservoir (210) can be injected into the user through the needle (N) and the cannula (see FIGS. 6 to 9).

The drug injection device (10) allows the user to simply rotate the needle assembly (100) to insert the cannula into the target object and initiate drug injection.

Figures 6 to 9 are drawings illustrating the operation of the reservoir unit (200) of Figure 3.

Referring to FIGS. 6 to 9, the reservoir unit (200) is mounted on the first body (13) and the third body (15) and is connected to the needle assembly (100). Referring to FIG. 6, the reservoir unit (200) stores a liquid (D) in an internal space and can quantitatively move the liquid to the needle (N) according to the movement of the plunger (230). The reservoir unit (200) may be equipped with a reservoir (210), a cap cover (220), a plunger (230), and a sealing ring (240).

A reservoir (210) is mounted on a base body, and a plunger (230) can be arranged inside. The reservoir (210) is extended to a preset length in the longitudinal direction, and can store a liquid in the internal space. The reservoir (210) can discharge the liquid to the needle (N) by the movement of the plunger (230). A cap cover (220) is mounted on an end of the reservoir (210), and a rod (410) and/or a connecting member (520) can move through an opening (not shown) arranged in the cap cover (220).

The reservoir (210) may have an inlet and an outlet. The liquid is injected into the inlet, a needle (N) is installed at the outlet, and the liquid can be discharged through the needle (N).

The plunger (230) is placed inside the reservoir (210) and can move linearly by the driving of the driving module (300) and the driving unit (400). As the plunger (230) advances, the liquid can be discharged from the internal space to the needle (N).

In one embodiment, the plunger (230) may have an end (231) and an inclined surface (232). The end (231) may move toward the front (210F) of the reservoir (210) to move the liquid. The inclined surface (232) may be in close contact with the inclined portion of the reservoir (210).

The plunger (230) is provided with a sealing portion (240) at a portion that comes into contact with the inner wall of the reservoir (210), thereby preventing the liquid from leaking when the plunger (230) moves.

The driving module (300) can generate driving force and transmit the driving force to the driving unit (400). The driving module (300) can be defined as various components that provide driving force to drive the liquid injection device (10). The driving force transmitted from the driving module (300) to the driving unit (400) can move the plunger (230) linearly within the reservoir (210) to discharge the liquid through the needle (N).

In one embodiment, the drive 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 type micropump and an electromagnetic motion type micropump, may be used. A mechanical displacement type micropump is a pump that uses the movement of a solid or fluid, such as a gear or diagram, to generate a pressure difference to induce a fluid flow, and includes a diaphragm displacement pump, a fluid displacement pump, a rotary pump, etc. An electromagnetic motion type micropump is a pump that uses electric or magnetic energy to directly move a fluid, and includes an electrohydrodynamic pump (EHD), an electroosmotic pump, a magnetohydrodynamic pump, an electrowetting pump, etc.

In one embodiment, the drive module (300) may be formed of a shape memory alloy. When electricity is applied to the drive module, the drive module formed of the shape memory alloy changes in length or shape, and the change may be transmitted as a driving force to the drive unit (400).

Referring to FIG. 7, the clutch unit (500) connects the load (410) and the drive wheel (420) so that the driving force can be transmitted to the plunger (230). When the drive units (400) are engaged with each other by the clutch unit (500), the drive module (300) rotates the drive wheel (420) of the drive unit (400), and the rotation of the drive wheel (420) causes the load (410) to move linearly so that the plunger (230) can move.

The battery (350) supplies electricity to the drug injection device (10) to activate each component. The drawing shows a pair of batteries (350), but is not limited thereto, and may be set in various ways depending on the capacity, usage range, usage time, etc. of the drug injection device (10).

The battery (350) is placed adjacent to the driving unit (400) and can supply electricity to the driving unit (400). In addition, the battery (350) is connected to the control module (16) and can measure data on the rotational speed or rotational number of the driving unit (400), the amount of medicine stored in the reservoir (210), the amount of medicine injected to the user, etc. based on an electrical signal measured by a sensor unit (not shown).

Referring to FIGS. 6 to 9, the driving unit (400) is installed between the driving module (300) and the reservoir unit (200), and can move the plunger (230) placed in the reservoir (210) with the driving force generated by the driving module (300). However, the driving unit (400) can move the plunger (230) forward only when the load (410) and the driving wheel (420) are coupled or connected by the clutch unit (500).

The rod (410) is connected to the plunger (230) and extends in one direction. The rod (410) is inserted into the opening of the cap cover (220), and the rod (410) can move in the longitudinal direction of the reservoir (210) to move the plunger (230). The rod (410) may have a screw thread shape on its surface. The rod (410) is inserted into the connecting member (520), and when the liquid is quantitatively discharged, it is connected to the driving wheel (420) by the clutch unit (500), so that the rod (410) can move forward.

The driving wheel (420) may be placed on the outside of the load (410). The driving wheel (420) is operatively connected to the driving module (300) and may rotate by driving the driving module (300). A second rotating member (900) is placed between the driving wheel (420) and the driving module (300), and the driving force generated in the driving module (300) may be transmitted to the driving wheel (420) through the second rotating member (900).

The clutch unit (500) can operatively connect the drive module (300) and the drive unit (400). The clutch unit (500) is arranged between the load (410) and the drive wheel (420) and may include a coupler (510) and a connecting member (520).

The coupler (510) is arranged between the load (410) and the driving wheel (420), and can optionally couple the load (410) and the driving wheel (420). The coupler (510) is arranged on the outside of the connecting member (520), and is spaced apart from the connecting member (520) by a predetermined distance when inactive (FIGS. 6 and 7), and can connect the load (410) and the driving wheel (420) when activated (FIGS. 8 and 9). The coupler (510) is a component that can apply force to the outside of the connecting member (520) with elastic force, and is not limited to a specific form. However, for the convenience of explanation, the following description will focus on the case of a coil spring form.

The connecting member (520) can be positioned so that at least a portion of it is inserted into the load (410). The connecting member (520) is positioned so as to cover the outer side of the load (410). The connecting member (520) can connect the drive module (300) and the load (410) depending on the operation of the coupler (510).

In one embodiment, the rod (410) and the connecting member (520) may have the shape of a screw and a screw thread, respectively. Screw threads may be formed on the outer surface of the rod (410) and screw threads may be formed on the inner surface of the connecting member (520) to be connected in a screw-joint form.

In one embodiment, the connecting member (520) may have threads formed on the inner surface at one end, but no threads may be arranged at the other end.

Referring to Fig. 6, a screw thread is formed on the inner surface of the first section (L1) of the connecting member (520), and the rod (410) is screw-connected only in the first section (L1). In addition, the diameter of the first section (L1) corresponds to the rod (410) and may have a size of D1.

The second section (L2) of the connecting member (520) does not have screw threads formed on the inner 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 (520) does not come into contact with the rod (410).

The length of the first section (L1) can be set so that the connecting member (520) overlaps the coupler (510) when moving rearward. Referring to FIGS. 8 and 9, when the plunger (230) is extended rearwardly, at least a portion of the first section (L1) is arranged so that it overlaps the coupler (510), that is, at least a portion faces the coupler (510). The length of the first section (L1) in the connecting member (520) can be set so that the coupler (510) grips at least a portion of the first section (L1) when the coupler (510) is activated.

Since the load (410) is screw-connected only in the first section (L1) of the connecting member (520), when the connecting member (520) rotates to move the load (410) forward, the load caused by the screw connection between the connecting member (520) and the load (410) can be reduced.

As shown in FIGS. 8 and 9, when the coupler (510) is activated, the coupler (510) grips the connecting member (520), and the connecting member (520) also rotates along with the rotation of the driving wheel (420). Since the connecting member (520) and the rod (410) are screw-connected only in the first section (L1), even if the driving wheel (420) rotates with a small torque, the connecting member (520) can move the rod (410) forward. That is, since the rod (410) and the connecting member (520) are screw-connected only in the first section (L1), the plunger (230) can move forward even with a relatively weak force by the driving of the driving unit (400).

FIG. 10 is a perspective view illustrating the first rotation member (600) of FIG. 3, and FIG. 11 is a drawing conceptually illustrating the arrangement of the first rotation member (600) of FIG. 10.

Referring to FIGS. 4, 5, 10, and 11, the first rotating member (600) can generate a mechanical signal for injecting the liquid of the liquid injection device (10). The first rotating member (600) is rotatably arranged on one side of the third body (15), and the first rotating member (600) can rotate to initiate driving of the driving module (300), and at the same time, the clutch unit (500) can drive and connect the driving unit (400).

The first rotating member (600) applies force to the coupler (510) according to the user's operation, and the coupler (510) can connect the load (410) and the driving wheel (420). In detail, the first rotating member (600) can rotate in one direction around the first axis (AX1). At this time, the first rotating member (600) applies force to the end (511) of the coupler (510), and the coupler (510) can couple the load (410) and the driving wheel (420).

The first rotating member (600) may have a first base (610), a first shaft (620), a first A section (630), and a first B section (640). The first rotating member (600) may be connected to a first antenna pattern (AP1), and a first signal line (SL1) for transmitting a signal from the first antenna pattern (AP1) to a circuit board may be embedded therein.

The first base (610) is connected to the first shaft (620), and a first antenna pattern (AP1) can be arranged. The first base (610) has a predetermined length, and a first A section (630) and a first B section (640) can be arranged. The first base (610) can rotate around the first shaft (620). A first flange (611) is arranged on one side of the first base (610), and the first flange (611) can come into contact with a knob (101) of the needle assembly (100) by the rotation of the needle assembly (100).

The first shaft (620) is arranged so that its end is in contact with the control module (16), so that the first signal line (SL1) can be in contact with the control module (16). The first shaft (620) can be connected to a circuit board arranged inside the drug injection device (10).

When the first base (610) rotates around the first shaft (620), the force portion (631) of the first A section (630) can apply force to the end (511) of the coupler (510) to drive the clutch unit (500). In addition, when the first base (610) rotates around the first shaft (620), the first B section (640) can apply force to a part of the driving module (300) and initiate driving of the driving module (300).

In detail, in FIG. 4, when the user rotates the needle assembly (100), the knob of the needle assembly (100) applies force to the end of the first rotational member (600), so that rotation of the first rotational member (600) can be initiated. When the first rotational member (600) rotates, the first A end (630) of the first rotational member (600) applies force to the end of the coupler (510), and the coupler (510) is coupled with the connecting member (520), so that the clutch unit (500) is activated.

The first rotating member (600) may have a first antenna pattern (AP1). The first antenna pattern (AP1) may be embedded in the interior of the first rotating member (600) or may be arranged on the exterior. The first antenna pattern (AP1) may receive a signal from the outside and transmit the signal to the circuit board. The first antenna pattern (AP1) may transmit and receive a signal with an external device, and may transmit the signal to the control module (16) through the first signal line (SL1).

The first antenna pattern (AP1) may be set to various structures for transmitting and receiving signals. For example, the first antenna pattern (AP1) may have a patterned signal line and a ground line for transmitting and receiving a high-frequency signal. In the drawing, the first antenna pattern (AP1) is shown as an example in which it is arranged on the first base (610), but is not limited thereto, and may be set at a position in the first rotating member (600) where communication with an external device is possible.

A first signal line (SL1) can connect a first antenna pattern (AP1) and a control module (16). A portion of the first signal line (SL1) is connected to the first antenna pattern (AP1), and another portion can extend along the first shaft (620). In one embodiment, another portion of the first signal line (SL1) can extend along the center of the first shaft (620).

Referring again to FIG. 3, the needle cover assembly (700) can be mounted below the needle assembly (100). The needle cover assembly (700) can prime the air stored in the reservoir unit (200) before injecting the drug solution. When the drug solution is injected into the reservoir (210), the gas (air) remaining in the reservoir (210) can be discharged to the outside through the needle cover assembly (700).

The needle cover assembly (700) may have a first cover (710), a second cover (720), a filter member (not shown), and an adhesive layer (740).

The first cover (710) may be placed at the bottom of the liquid injection device (10). The second cover (720) may be inserted and assembled into the opening of the first cover (710). An insertion protrusion (711) may be placed on one side of the first cover (710) to be inserted into the second body (14) and secure the needle cover assembly (700).

The second cover (720) is assembled to the first cover (710), and a needle (N) and/or a cannula may be aligned in the center. The second cover (720) may have a storage space that penetrates in the height direction in the center and stores the drug (D). The second cover (720) may have a protrusion (721) inserted into the third body (15) in the center.

A filter member (not shown) is mounted on the second cover (720). The filter member is placed below the storage space of the second cover (720), and gases such as air pass through the filter member, but liquids such as a chemical liquid do not pass through the filter member. Thus, air discharged from the needle (N) passes through the filter member and is discharged to the outside, but the chemical liquid discharged from the needle can be stored in the storage space defined by the second cover (720) and the filter member.

The filter member may change shape depending on the amount of the drug stored in the storage space. For example, when the storage space is filled with the drug, the filter member may expand downward, allowing the user to recognize that the drug has entered the needle cover assembly (700).

The adhesive layer (740) is placed on one surface of the needle cover assembly (700) and can attach the needle cover assembly (700) to the attachment portion (12).

The alarm unit (800) is placed inside or outside the drug injection device (10) and can notify the user of normal operation or malfunction of the drug injection device (10).

For example, an alarm unit (800) is placed underneath the housing (11) and connected to the circuit board. The alarm unit (800) can generate a warning sound or generate light to transmit an alarm to an external user.

FIG. 12 is a drawing illustrating a part of the liquid injection device of FIG. 3, and FIG. 13 is a drawing conceptually illustrating the arrangement of the second rotating member of FIG. 12.

Referring to FIGS. 12 and 13, the driving wheel (420) can be driven by the second rotating member (900). The connector (310) of the driving module (300) is connected to the second rotating member (900), and the driving force transmitted to the connector (310) can rotate the second rotating member (900). The second rotating member (900) receives the driving force from the driving module (300), and the first arm (A1) and the second arm (A2) can alternately apply force to the driving wheel (420).

The driving wheel (420) has a first connecting end (421) and a second connecting end (422), and may have a space inside in which a load (410) can move. At least one of the first connecting end (421) and the second connecting end (422) is always drivably connected to the driving module (300) by the second rotating member (900), so that the driving wheel (420) can rotate by driving the driving module (300).

In one embodiment, the first connecting end (421) and the second connecting end (422) may have a gear tooth shape. The second rotating member (900) connected to the driving module (300) may apply force to the gear teeth to rotate the driving wheel (420).

In detail, the second rotating member (900) repeatedly rotates around the second axis (AX2) according to the linear reciprocating motion of the connector (310). An end of the second rotating member (900) can rotate the driving wheel (420) by applying force to at least one of the first connecting end (421) and the second connecting end (422). For example, the first arm (A1) of the second rotating member (900) can be arranged to apply force to the first connecting end (421), and the second arm (A2) of the second rotating member (900) can be arranged to apply force to the second connecting end (422).

When the second rotating member (900) rotates around the second axis (AX2), the first contact sensor (CS1) and the second contact sensor (CS2) can measure the driving of the second rotating member (900) through the presence or absence of contact. The first contact sensor (CS1) and the second contact sensor (CS2) can detect the presence or absence of contact with the second rotating member (900) and measure whether the driving force of the driving module (300) is transmitted to the driving wheel (420). In addition, when the number of times of contact is counted by the first contact sensor (CS1) and the second contact sensor (CS2), the controller calculates the rotational amount of the driving wheel (420) and can calculate the movement distance of the plunger (230) based on the rotational amount of the driving wheel (420).

The second rotating member (900) may have a second base (910), a second shaft (920), and a second end (930). The second rotating member (900) may be connected to a second antenna pattern (AP2), and a second signal line (SL2) for transmitting a signal from the second antenna pattern (AP2) to the circuit board may be embedded therein.

The second base (910) is connected to the second shaft (920), and a second antenna pattern (AP2) can be arranged. The second base (910) has a predetermined width, and a second end (930) is arranged at an end, and when the second base (910) rotates around the second axis (AX2), the second end (930) can alternately contact the first contact sensor (CS1) and the second contact sensor (CS2).

The second shaft (920) is positioned so that its end is in contact with the control module (16), and the second signal line (SL2) can be in contact with the control module (16). The second shaft (920) can extend along the second axis (AX2).

The second rotating member (900) may have a second antenna pattern (AP2). The second antenna pattern (AP2) may be embedded in the interior of the second rotating member (900) or may be arranged on the exterior. The second antenna pattern (AP2) may transmit and receive signals with an external device, and may transmit signals to the control module (16) through the second signal line (SL2).

The second antenna pattern (AP2) may be set to various structures for transmitting and receiving signals. For example, the second antenna pattern (AP2) may have a patterned signal line and a ground line for transmitting and receiving high-frequency signals. In the drawing, the second antenna pattern (AP2) is shown as an example in which it is arranged on the second base (910), but is not limited thereto, and may be set at a position in the second rotating member (900) where communication with an external device is possible.

The second signal line (SL2) can connect the second antenna pattern (AP2) and the control module (16). A portion of the second signal line (SL2) is connected to the second antenna pattern (AP2), and another portion can extend along the second shaft (920). In one embodiment, another portion of the second signal line (SL2) can extend along the center of the second shaft (920).

The drug injection device (10) and drug injection system (1) according to the present invention can have an antenna pattern arranged on a rotating member. The drug injection device (10) can be arranged on at least one of the first rotating member (600) and the second rotating member (900).

In one embodiment, the drug injection device (10) may have only a first antenna pattern (AP1) arranged on the first rotating member (600) and may communicate with an external device through the first antenna pattern (AP1).

In another embodiment, the drug injection device (10) may have only a second antenna pattern (AP2) disposed on the second rotating member (900) and may communicate with an external device through the second antenna pattern (AP2).

In another embodiment, the drug injection device (10) may have antenna patterns arranged on both the first rotating member (600) and the second rotating member (900), and a signal transmitted and received through the first antenna pattern (AP1) may be different from a signal transmitted and received through the second antenna pattern (AP2). That is, the drug injection device (10) may transmit signals through different antenna patterns depending on the type or wavelength band of the signal transmitted or received from an external device.

The drug injection device (10) and the drug injection system (1) according to the present invention have high signal transmission efficiency and can have a compact structure. The drug injection device (10) has an antenna pattern and can effectively transmit a signal to an external device. The drug injection device (10) has an antenna pattern arranged on a rotating member and can transmit and receive a signal with any one of a user terminal (20), a controller (30), and a bio-information sensor (40) through the antenna pattern.

The liquid injection device (10) does not have a separate part for having an antenna pattern, and is arranged on a rotating member for driving the liquid injection device (10), so that the volume of the liquid injection device (10) can be minimized. In addition, the rotating member on which the antenna pattern is arranged is arranged to be spaced apart from the control module, which is a circuit board, so that constraints on the signal radiation direction can be reduced. In addition, since the rotating member on which the antenna pattern is arranged is spaced apart from the user to whom the liquid injection device (10) is attached, the transmission efficiency of the signal can be increased.

The idea of the present invention should not be limited to the embodiments described above, and not only the scope of the patent claims described below, but also all scopes equivalent to or equivalently modified from the scope of the patent claims are considered to belong to the scope of the idea of the present invention.

1: Liquid injection system
10: Liquid injection device
100: Needle assembly
200: Reservoir Unit
300: Drive module
400: Drive Unit
600: 1st rotation member
700: Needle Cover Assembly
800: Alarm Unit
900: Second rotation member

Claims (10)

base body;
A reservoir mounted on the above base body and having a plunger disposed inside;
A rod connected to the above plunger;
A driving wheel arranged on the outer side of the above load;
A coupler disposed between the load and the driving wheel, and optionally coupling the load and the driving wheel; and
A rotating member having an antenna pattern in at least some area, and at least one end of which, when rotated, energizes said coupler or energizes said drive wheel;
The above rotating member
a shaft connected to a circuit board positioned inside the drug injection device; and
A liquid injection device comprising a body portion connected to the shaft and having the antenna pattern arranged thereon. delete In the first paragraph,
The above rotating member
A liquid injection device, which is connected to the antenna pattern and has a signal line embedded therein for transmitting a signal from the antenna pattern to a circuit board. In the third paragraph,
The above rotating member
A drug injection device, wherein the signal line extends along the shaft of the rotating member. In the first paragraph,
The above rotating member
A liquid injection device that applies force to the coupler according to the user's operation, and the coupler connects the load and the driving wheel. base body;
A reservoir mounted on the above base body and having a plunger disposed inside;
A rod connected to the above plunger;
A driving wheel arranged on the outer side of the above load;
A coupler disposed between the load and the driving wheel, and optionally coupling the load and the driving wheel;
A rotating member having an antenna pattern in at least some area, and at least one end of which, when rotated, applies force to said coupler or applies force to said drive wheel; and
A driving module for generating driving force;
The above rotating member
A liquid injection device that receives driving power from the above driving module and alternately applies power to the driving wheel using the first and second arms. In Article 6,
The above antenna pattern is a liquid injection device that receives a signal from the outside and transmits the signal to the circuit board. A drug delivery device attached to the user and delivering the drug; and
Including a controller for transmitting and receiving data with the above-mentioned drug injection device;
The above liquid injection device
base body;
A reservoir mounted on the above base body and having a plunger disposed inside;
A rod connected to the above plunger;
A driving wheel arranged on the outer side of the above load;
A coupler disposed between the load and the driving wheel, and optionally coupling the load and the driving wheel; and
A rotating member having an antenna pattern in at least some area, and having at least one end that, when rotated, energizes said coupler or energizes said drive wheel;
The above rotating member
A liquid injection system having a signal line connected to the above antenna pattern and extending along a shaft, which is a rotation axis, to transmit a signal to a circuit board. In Article 8,
The above rotating member
A liquid injection system that applies force to the coupler according to a user's operation and causes the coupler to connect the load and the driving wheel. In Article 8,
The above liquid injection device
Further comprising a driving module for generating driving force;
The above rotating member
A liquid injection system that receives driving power from the above driving module and alternately applies power to the driving wheel through the first and second arms.

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