JP2023127494A - Liquid medicine administration device, control method thereof, and liquid medicine administration system - Google Patents

Abstract

To complete priming more reliably.SOLUTION: A liquid medicine administration device for administering liquid medicine filled in a reservoir into a living body by the pressing action of a plunger includes: a reservoir to which the liquid medicine is filled; a flow channel connected to the reservoir for deriving the liquid medicine to the outside of the reservoir; a plunger provided in the reservoir and capable of moving in a longitudinal direction of the reservoir; a movable part capable of engaged with the plunger and pressing the plunger to a tip side of the reservoir by moving in a movable region; a drive part for moving the movable part in the movable region; and a control part. The control part controls the drive part so that the movable part starts to move to the tip side of the reservoir upon receipt of a first instruction from a user in a state that the movable part is not engaged with the plunger, and the movable part stops moving after continuing movement by a predetermined moving distance upon receipt of a second instruction from the user.SELECTED DRAWING: Figure 7

Description

The present disclosure relates to a liquid medicine administration device, a method for controlling the same, and a liquid medicine administration system.

A drug solution administration device is known that continuously or intermittently administers a drug solution such as insulin filled into a reservoir (syringe) into a living body by the pressing action of a plunger via a nut (for example, Patent Document 1) .

Japanese Patent Application Publication No. 2005-287944

When using the drug solution administration device, the user performs an operation called priming, in which the nut portion of the drug solution administration device is engaged with the plunger, and the flow path of the drug solution administration device including the outlet tube is filled with the drug solution. Priming is started by the user instructing the drug solution administration device to prime, and ends by the user instructing to stop priming when the user visually confirms that the drug solution has been discharged from the connecting needle tube.

In conventional drug administration devices, the nut part does not sufficiently engage the plunger, and even though the flow path of the drug solution administration device is not filled with drug solution, the drug solution is discharged from the connecting needle tube. There could be cases where the command would instruct the priming to stop. Therefore, in the conventional liquid drug administration device, there is room for improvement in ensuring that priming is completed.

An object of the present disclosure is to provide a drug solution administration device, a control method thereof, and a drug solution administration system that can complete priming more reliably.

A drug solution administration device according to an embodiment of the present disclosure is a drug solution administration device that administers a drug solution filled in a reservoir into a living body by a pressing action of a plunger, and includes a reservoir filled with the drug solution and a flow path that leads the chemical solution out of the reservoir; and a plunger that is provided in the reservoir and is movable in the longitudinal direction of the reservoir; a movable part that can stop and press the plunger toward the tip side of the reservoir, a drive part that moves the movable part in the movable region, and a control part, the control part In a state where the movable part is not locked to the plunger, the movable part starts moving toward the tip side of the reservoir in response to receiving a first instruction from the user, and receives a second instruction from the user. In response to this, the drive unit is controlled to continue moving the movable part by a predetermined moving distance and then stop moving the movable part.

In one embodiment, the plunger includes at least one extending portion each having a claw portion at its rear end, and the movable portion has a penetrating portion through which the plunger can be locked by passing the claw portion therethrough. a hole, and the control unit moves the movable part by a distance corresponding to the size of the claw part as the predetermined movement distance in response to receiving the second instruction from the user. After continuing, the driving section is controlled to stop the movement of the movable section.

In one embodiment, in response to receiving the second instruction from the user, the control unit continues to move the movable part by a predetermined moving distance and then stops moving the movable part. After that, in response to receiving a third instruction from the user, the driving section is controlled to restart the movement of the movable section.

In one embodiment, the control unit resumes movement of the movable part in response to receiving the third instruction from the user, and then resumes movement of the movable portion in response to receiving a fourth instruction from the user. , the driving section is controlled to stop the movement of the movable section.

In one embodiment, a liquid medicine administration stem includes the liquid medicine administration device described above and a remote control for the user to operate the liquid medicine administration device.

A method for controlling a liquid medicine administration device according to an embodiment of the present disclosure includes a reservoir filled with a liquid medicine, a flow path connected to the reservoir and leading the liquid medicine out of the reservoir, and a flow path provided in the reservoir. a plunger that is movable in the longitudinal direction of the reservoir; a movable portion that can move in a movable region to engage with the plunger and press the plunger toward the tip side of the reservoir; A method for controlling a liquid drug administration device, comprising a drive unit that moves a movable part in the movable region, and a control unit, and administers the drug solution filled in the reservoir into a living body by a pressing action of the plunger, a step in which the control unit starts moving the movable part toward the distal end side of the reservoir in response to receiving a first instruction from a user in a state where the movable part is not engaged with the plunger; , in response to receiving a second instruction from the user, continuing the movement of the movable part by a predetermined moving distance, and then stopping the movement of the movable part.

According to an embodiment of the present disclosure, it is possible to complete priming more reliably.

FIG. 1 is a diagram showing an example of a drug solution administration system according to an embodiment. 2 is an example of a perspective view of the drug solution administration device of FIG. 1. FIG. FIG. 2 is an example of a perspective view of the liquid medicine administration device of FIG. 1 in a separated state. 4 is an example of an exploded perspective view of the pump body of FIG. 3. FIG. It is a figure which shows an example of the cartridge in the state where a nut part is in a non-contact position. It is a figure showing an example of a cartridge in a state where a nut part is in a predetermined position. FIG. 2 is a block diagram showing an example of a configuration related to control of the liquid drug administration device of FIG. 1. FIG. FIG. 2 is a block diagram showing an example of the hardware configuration of the remote control shown in FIG. 1. FIG. 2 is a flowchart illustrating an example of an operation procedure of the liquid medicine administration device of FIG. 1. FIG. 2 is a flowchart showing another example of the operation procedure of the liquid drug administration device of FIG. 1. FIG.

Hereinafter, one embodiment of the present disclosure will be described with reference to the drawings. In each drawing, parts having the same configuration or function are designated by the same reference numerals. In the description of this embodiment, overlapping description of the same parts may be omitted or simplified as appropriate.

(Configuration of drug solution administration system)
FIG. 1 is a diagram illustrating an example of a liquid drug administration system 100 according to an embodiment. The drug solution administration system 100 administers a drug solution such as insulin into a patient's body. The drug solution administration system 100 includes a drug solution administration device 1 and a remote control 90.

The drug solution administration device 1 is a device that continuously or intermittently administers a drug solution filled in a reservoir (syringe) 18 into a living body by the pressing action of a plunger 20, as will be described later with reference to FIG. 4 and the like. The drug solution administration device 1 may be, for example, a portable device that can be attached to the abdomen of a patient (patch type). However, the drug solution administration device 1 is not limited to a patch type, but may be a tube type or the like.

The remote control 90 is a device that allows a user such as a patient to operate the liquid drug administration device 1 . The remote control 90 notifies the user of information received from the drug solution administration device 1 and receives user operations on the drug solution administration device 1 . In this embodiment, the remote control 90 is realized by a dedicated device compatible with the liquid medicine administration device 1, but it may be realized by a general-purpose information processing device such as a smartphone or a tablet. Furthermore, in this embodiment, an example will be described where the remote controller 90 serves as a user interface for notifying the user of information and accepting information input from the user, but instead of this, the remote controller 90 may serve as a user interface for notifying the user of information and accepting information input from the user. The liquid medicine administration device 1 may be provided with the function.

The liquid drug administration device 1 and the remote controller 90 are communicably connected to each other via a wireless communication line, a wired communication line, or a combination thereof. Hereinafter, an example in which the liquid medicine administration device 1 and the remote control 90 are communicably connected via Bluetooth (registered trademark) will be described.

(Configuration of drug solution administration device)
FIG. 2 is an example of a perspective view of the liquid medicine administration device 1 of FIG. 1. FIG. 3 is an example of a perspective view of the liquid medicine administration device 1 of FIG. 1 separated. The liquid drug administration device 1 includes a pump body 10, a cradle device 11 to which the pump body 10 is removably attached, and a connection port 106 to be attached to the cradle device 11. The pump main body 10 and the cradle device 11 have a structure that allows them to be repeatedly attached and detached by engaging with each other.

The pump body 10 includes a housing 111 that accommodates each component of the liquid drug administration device 1, such as the reservoir 18 and the plunger 20. As illustrated in FIGS. 2 and 3, the housing 111 may be formed into a flat, substantially rectangular parallelepiped shape with curved corners. The upper surface portion 121 of the housing 111 is one surface of the pump body 10 located opposite to the side on which the cradle device 11 is mounted. The upper surface portion 121 may be formed into a substantially rectangular shape with curved corners when viewed from above. At the end of the upper surface portion 121 in the first direction, a front portion 123 and a back portion 124 facing each other are substantially perpendicularly continuous. A side surface portion 126 continues approximately perpendicularly to the end portion of the upper surface portion 121 in the second direction.

As shown in FIG. 3, the pump body 10 may have an engagement structure in the side portion 126 that allows the pump body 10 and the cradle device 11 to be repeatedly attached and detached. The engagement structure may include, for example, a hook mechanism. Specifically, a guide groove portion 137 and an engagement hook portion 138 may be formed in the side surface portion 126. The engagement hook portion 138 may be formed closer to the back surface portion 124 than the guide groove portion 137. The engagement hook portion 138 may be removably engaged with an engagement receiving portion 162 of the cradle device 11, which will be described later.

The cradle device 11 is configured to be able to support the pump body 10. As shown in FIGS. 2 and 3, the cradle device 11 has a substantially flat mounting surface portion 141 and side wall portions 143 and 144. The mounting surface portion 141 is formed into a substantially rectangular shape with curved corners when viewed from above. When the pump body 10 is mounted on the cradle device 11, the bottom surface of the housing 111 of the pump body 10 is placed on the placement surface portion 141.

A detection rail 152, a sliding rail 153, and a mounting section 155 may be provided on one surface of the mounting surface section 141. The connection port 106 may be attached to the attachment portion 155 . The mounting portion 155 may be provided with an insertion hole through which the cannula of the connection port 106 is inserted.

The detection rail 152 is a protruding strip that projects from one surface of the mounting surface section 141 . The detection rail 152 is used for the pump body 10 to detect whether the cradle device 11 is attached. The thickness of the detection rail 152 from the mounting surface portion 141 gradually increases toward the side wall portion 144 side. The detection rail 152 extends parallel to the side wall portion 143 by a predetermined length. When the pump main body 10 is mounted on the cradle device 11, the detection rail 152 enters the detection groove provided in the pump main body 10 and presses the mounting detection section. The pump main body 10 detects attachment of the cradle device 11 based on the attachment detection portion being pressed. That is, the attachment detection section functions as a detection section that detects whether the pump body 10 is attached to the cradle device 11 or not.

The sliding rail 153 extends parallel to the side wall portion 143 on one surface of the mounting surface portion 141 . When the pump main body 10 is mounted on the cradle device 11, a sliding groove (not shown) provided on the bottom surface of the pump main body 10 is slidably fitted into the sliding rail 153.

A side wall portion 144 continues approximately perpendicularly to the end portion of the placement surface portion 141 in the first direction. Side wall portions 143 facing each other are substantially perpendicularly continuous at the end portion of the mounting surface portion 141 in the second direction. When the pump body 10 is attached to the cradle device 11, the side wall portion 143 faces the side surface portion 126 of the housing 111 of the pump body 10. The side wall portion 144 faces the front portion 123 of the housing 111.

As shown in FIG. 3, the cradle device 11 may have a fitting hole 154, which is an opening, in the side wall portion 144. When the pump main body 10 is mounted on the cradle device 11, a fitting protrusion provided on the front part 123 of the pump main body 10 may fit into the fitting hole 154.

A guide rail 151 , a posture correction section 156 , and an engagement receiving section 162 may be formed on the side wall section 143 . The engagement receiving portion 162 may be an opening formed by cutting out the side wall portion 143 into a substantially rectangular shape. When the pump body 10 is mounted on the cradle device 11, the engagement hook portion 138 may be removably engaged with the engagement receiving portion 162.

As shown in FIG. 3, the guide rail 151 is a protrusion formed on the side wall 143. As shown in FIG. The guide rail 151 does not necessarily have to have a continuous protrusion. For example, as shown in FIG. 3, a notch 158 may be appropriately provided in the middle of the guide rail 151.
When the pump body 10 is mounted on the cradle device 11, the guide rail 151 engages with a guide groove 137 provided in the side surface 126 of the pump body 10. This guides the mounting direction of the pump body 10.

As shown in FIGS. 2 and 3, the posture corrector 156 is a plate-shaped protrusion extending upward from the side wall 143. As shown in FIGS. The posture correction section 156 may have a curved shape corresponding to the shape of the connecting section (corner section) between the top surface section 121 and the side surface section 126 in the housing 111 of the pump main body 10 .

The cradle device 11 may be provided with an adhesive sheet that is affixed to the patient's skin. The adhesive sheet may be attached to the other surface of the mounting surface section 141 of the cradle device 11 on the opposite side to one surface. The adhesive sheet may have an opening (not shown) through which a cannula of a connection port 106 (described later) passes. The adhesive sheet may be formed of a flexible member. An adhesive layer that is attached to the patient's skin may be formed on the side opposite to the mounting surface portion 141 by the adhesive sheet. Before being applied to the patient's skin, the adhesive layer of the patch sheet may be covered with release paper.

Connection port 106 may have a port body 181 capable of holding a cannula therein. The port body 181 may have a cylindrical connection portion. When the cannula is connected, the inside of the connection portion (cylindrical hole), the port body 181, and the cannula communicate with each other. A cap 182 is attached to the tip of the connecting portion, and the other end of the connecting portion is connected to the port body 181. The cap 182 seals the opening at the end of the connection part. This isolates the inside of the connection port 106 from the external environment.

When the connection port 106 is attached to the attachment section 155 of the cradle device 11 using a puncture mechanism (not shown), the cannula passes through the placement surface section 141 together with the puncture needle, and the cannula passes through the placement surface section 141 on the other surface of the placement surface section 141 (applied to the skin). protrude toward the exposed surface). The cannula is then punctured into the living body together with the puncture needle. Thereafter, the cannula is left in the living body by removing the puncture needle.

The connection portion of the port body 181 may face upstream in the mounting direction. The connecting needle tube exposed to the outside of the pump body 10 is fluidly connected to the outlet tube 29 . The connecting needle tube penetrates into the cylindrical hole by puncturing the septum surface of the cap 182. As a result, the port body 181 and the outlet pipe 29 (see FIG. 5, etc.) of the pump body 10 are connected, and the outlet pipe 29 and the cannula are fluidly connected. Then, by driving the drive unit 40 (see FIG. 5, etc.), the drug solution stored in the reservoir 18 of the pump body 10 is delivered to the connection port 106 via the outlet pipe 29 and administered to the patient from the cannula. Ru. That is, the outlet pipe 29 is connected to the reservoir 18 and acts as a flow path for guiding the chemical solution out of the reservoir 18 . When the connecting needle tube is connected to the outlet tube 29, the flow path of the liquid drug administration device 1 may include the outlet tube 29 and the connecting needle tube.

(Pump body configuration)
FIG. 4 is an example of an exploded perspective view of the pump body 10 of FIG. 3. FIG. 5 is a diagram showing an example of the cartridge 12 with the nut portion 24 in a non-contact position. FIG. 6 is a diagram showing an example of the cartridge 12 with the nut portion 24 in a predetermined position.

As shown in FIG. 4, the pump body 10 includes a disposable cartridge 12 and a reusable device body 14. The cartridge 12 includes a flat box-shaped base portion 16 with one side open. The base portion 16 has a substantially rectangular shape in plan view. The base portion 16 may be removably attached to the cradle device 11 that can be attached to the patient's skin.

As shown in FIG. 4, the base portion 16 includes a reservoir 18 filled with a chemical solution, a plunger 20 provided in the reservoir 18, a feed screw shaft 22 disposed coaxially with the plunger 20, and a feed screw shaft. A nut portion (movable portion) 24 screwed onto 22 is provided. The base portion 16 is configured as a disposable member.

The reservoir 18 extends in a cylindrical shape in the longitudinal direction of the base portion 16. The outer diameter and inner diameter of the distal end of the reservoir 18 decrease toward the distal end. An introduction port 26 for introducing the chemical solution into the reservoir 18 and a discharge port 28 (see FIG. 5) for leading out the chemical solution in the reservoir 18 are formed at the tip of the reservoir 18. . The outlet port 28 communicates with an outlet tube 29 that guides the medicinal solution in the reservoir 18 to the cannula.

As shown in FIG. 5, the plunger 20 is integrally molded from a resin material or the like, and is provided within the reservoir 18 so as to be slidable in a fluid-tight manner along the axial direction of the reservoir 18. The plunger 20 has a plunger main body 30 constituting a distal end side, and a pusher 32 provided on the plunger main body 30 and constituting a rear end side. A sealing member (sealing member) 34 is attached to the cylindrical rear end of the plunger body 30 . Seal member 34 is attached to the outer surface of plunger body 30. The sealing member 34 is in pressure contact with the inner wall surface of the reservoir 18 to prevent leakage of the chemical liquid filled in the reservoir 18 . The sealing member 34 fits into the cylindrical inner wall surface so that the medicinal solution does not leak from the boundary between the plunger body 30 and the inner wall surface of the reservoir 18, and connects the inner wall surface of the reservoir 18 to the left and right sides of FIGS. 5 and 6. Move forward and backward in the direction. Depending on the position of the plunger body 30 in the reservoir 18, the size of the internal space of the reservoir 18 that accommodates the chemical solution changes. In this embodiment, the sealing member 34 is constituted by an O-ring, but it is not limited to this as long as it can prevent the chemical solution in the reservoir 18 from leaking from the plunger body 30. The seal member 34 may be made of an elastic material, such as silicone rubber.

The pusher 32 includes a pair of extension parts 36 extending rearward from the plunger body 30 to the outside of the reservoir 18, and a pair of claw parts 38 provided at the rear end of the extension part 36. The feed screw shaft 22 has one end supported by a bearing 39, and constitutes a drive section 40 that moves the nut section 24.

The drive unit 40 includes a battery 42 as a power source, a motor 44 driven by the battery 42, a gear box (power transmission mechanism) 46 that reduces and transmits the rotational driving force of the motor 44, and an output gear 48 of the gear box 46. The transmission shaft 52 further includes a transmission shaft 52 to which a spur gear 50 meshing with is fixed and is integrally rotatably engaged with the feed screw shaft 22.

In this embodiment, the battery 42 and the transmission shaft 52 are provided in the cartridge 12, and the motor 44 and gear box 46 are provided in the main body 14 of the apparatus. By providing the motor 44 and gear box 46 in the apparatus main body 14 in this manner, the cost of the cartridge 12 can be reduced.

The battery 42 is provided with a terminal 54 that is electrically connected to the motor 44 of the apparatus main body 14 when the apparatus main body 14 is connected to the cartridge 12. The transmission shaft 52 is disposed coaxially with the feed screw shaft 22 and is supported by a pair of bearings 56 provided on the base portion 16 .

When the motor 44 rotates, its rotational force is transmitted to the feed screw shaft 22, and the nut portion 24 moves toward or away from the reservoir 18 due to the rotational action of the feed screw shaft 22. Hereinafter, the rotation of the motor 44 for moving the nut portion 24 in the direction toward the reservoir 18 will be referred to as forward rotation (forward rotation). Rotation in the opposite direction to the forward direction is called rotation in the opposite direction (reverse rotation). The motor 44 is configured to be able to rotate in both forward and reverse directions. The motor 44 is configured so that when a force exceeding a certain level is applied to the rotation in the forward direction or the rotation in the reverse direction, the rotational driving force is not transmitted to the components below the gear box 46 . For example, a stepping motor may be used as the motor 44. When a stepping motor is used, when a force exceeding a certain level is applied to the rotation in the forward direction or the rotation in the reverse direction, the motor 44 becomes out of synchronization with the input pulse, and therefore stops transmitting the rotational driving force (step-out). Even if the motor 44 rotates in the opposite direction with the nut 24 in contact with the bearing 56 due to synchronization, excessive force will not be applied to mechanisms such as the motor 44, gear box 46, and transmission shaft 52. This can prevent damage. A rotary encoder (not shown) is provided on the output shaft of the motor 44, and whether the motor 44 is out of synchronization with the input pulse (step-out) can be determined by detecting the rotation of the motor 44 with the rotary encoder. The operating state of the motor 44 is transmitted to the control unit 71 as a rotary encoder output.

The nut portion 24 is integrally molded from a resin material and includes a nut portion main body 58 formed in a substantially rectangular parallelepiped shape and a slide portion 60 provided on the nut portion main body 58. The nut main body 58 is formed with a screw hole 62 into which the feed screw shaft 22 is screwed, and a pair of through holes 64 which are formed to sandwich the screw hole 62 from both sides and into which the claw portion 38 is inserted. A reinforcing cover 66 made of, for example, a metal material is attached to the outer surface of the nut main body 58.

The slide portion 60 slides with respect to a guide wall 68 provided on the base portion 16 and extending along the axial direction of the plunger 20. That is, the nut portion 24 is in a non-contact position where it does not contact the plunger 20 before use (see FIG. 5), and the nut portion 24 and the plunger 20 are moved from the non-contact position by the rotational action of the feed screw shaft 22. Move to the locked contact position. After contacting the plunger 20, the feed screw shaft 22 further rotates, so that the nut portion 24 presses the plunger 20 toward the tip side (see FIG. 6). Note that a restricting portion serving as a stopper may be provided on the guide wall 68 to prevent the sliding portion 60 from retreating any further.

As shown in FIGS. 4 to 6, the device main body 14 includes a lid that is removably attached to the base portion 16 so as to close an opening of the base portion 16, a control portion 71, a storage portion 72, and A communication section 73 is provided. The lid body may be provided on the upper surface portion 121 of the housing 111. A battery 42, a motor 44, a storage section 72, and a communication section 73 are electrically connected to the control section 71 via a bus 79 (see FIG. 7). The control unit 71 controls each part of the liquid drug administration device 1 and executes processing related to the operation of the liquid drug administration device 1. For example, the control unit 71 drives and controls the motor 44 based on information regarding drug administration transmitted from the remote controller 90.

FIG. 7 is a block diagram showing an example of a configuration related to control of the liquid drug administration device 1 of FIG. 1. As shown in FIG. As described above, the battery 42 , the motor 44 , the storage section 72 , and the communication section 73 are electrically connected to the control section 71 via the bus 79 .

Control unit 71 is one or more processors. The control unit 71 is communicably connected to each component forming the liquid drug administration device 1 and controls the operation of the liquid drug administration device 1 as a whole. The processor is a general-purpose processor such as a CPU (Central Processing Unit), or a dedicated processor specialized for specific processing. The control unit 71 may include one or more dedicated circuits, or the one or more processors in the control unit 71 may be replaced with one or more dedicated circuits. The dedicated circuit is, for example, an FPGA (Field Programmable Gate Array).

The storage unit 72 is one or more semiconductor memories, one or more magnetic memories, one or more optical memories, or a combination of at least two of these. The semiconductor memory is, for example, RAM (Random Access Memory) or ROM (Read Only Memory). The storage unit 72 functions as, for example, a main storage device, an auxiliary storage device, or a cache memory. For example, the storage unit 72 may store information from the control unit 71. Further, the information stored in the storage section 72 may be transmitted to the remote control 90 via the communication section 73 under the control of the control section 71.

The communication unit 73 is a communication interface for communicating with the remote control 90. In this embodiment, the communication unit 73 communicates with the remote control 90 using Bluetooth (registered trademark), but the communication unit 73 is not limited to this, and for example, communicates via another wireless communication path such as a wireless LAN (Local Area Network) or a wired cable. You may.

The liquid medicine administration device 1 may be controlled by executing a program with a processor included in the control unit 71. That is, control of the drug solution administration device 1 may be realized by software. In this case, the program causes the computer to execute the processing of the step included in the operation of the liquid drug administration device 1, thereby causing the computer to realize the function corresponding to the processing of the step. Alternatively, some or all of the functions of the liquid drug administration device 1 may be realized by a dedicated circuit included in the control unit 71. That is, a part or all of the functions of the liquid drug administration device 1 may be realized by hardware.

(Remote control configuration)
FIG. 8 is a block diagram showing an example of the hardware configuration of remote control 90 in FIG. 1. As shown in FIG. The remote control 90 includes a control section 91 , a storage section 92 , a communication section 93 , an input section 94 , an output section 95 , and a bus 99 .

Control unit 91 is one or more processors. The control unit 91 is communicably connected to each component forming the remote controller 90 via a bus 99, and controls the overall operation of the remote controller 90. The processor is a general-purpose processor such as a CPU or a GPU (Graphics Processing Unit), or a dedicated processor specialized for specific processing. The control unit 91 may include one or more dedicated circuits, or the one or more processors in the control unit 91 may be replaced with one or more dedicated circuits. The dedicated circuit is, for example, an FPGA.

The storage unit 92 is one or more semiconductor memories, one or more magnetic memories, one or more optical memories, or a combination of at least two of these. The semiconductor memory is, for example, RAM or ROM. The RAM is, for example, SRAM (Static RAM) or DRAM (Dynamic RAM). The ROM is, for example, an EEPROM (Electrically Erasable Programmable ROM). The storage unit 92 functions as, for example, a main storage device, an auxiliary storage device, or a cache memory.

The communication unit 93 is a communication interface for communicating with the liquid drug administration device 1 . The communication unit 93 communicates with the drug solution administration device 1 to transmit information input by the user to the drug solution administration device 1 and receive information from the drug solution administration device 1 . The communication unit 93 communicates with the liquid drug administration device 1 using, for example, Bluetooth (registered trademark), but is not limited thereto, and may communicate via another wireless communication path such as a wireless LAN or a wired cable, for example.

The input unit 94 includes one or more input interfaces that accept a user's input operation and obtain input information based on the user's operation. The input unit 94 is, for example, a touch screen provided integrally with the display (display device) of the output unit 95, but is not limited to this, and may include physical keys (for example, an external numeric keypad), capacitive keys, and pointing keys. It may be a device, a microphone, etc. that accepts audio input.

The output unit 95 as a display unit includes one or more output interfaces that output information to and notify the user. For example, the output unit 95 is a display that outputs information as an image, an LED (Light Emitting Diode), a speaker, a vibrator, or the like, but is not limited to these. The input unit 94 and the output unit 95 act as an input/output unit that is an interface between the user and the liquid medicine administration device 1. In this embodiment, an example will be described in which such an input/output unit is provided in the remote control 90, but it may also be provided in the drug solution administration device 1 or other devices.

The functions of the remote controller 90 may be realized by executing a program according to this embodiment with a processor included in the control unit 91. That is, the functions of remote control 90 may be realized by software. In this case, the program causes the computer to execute the processing of the step included in the operation of the remote control 90, thereby causing the computer to realize the function corresponding to the processing of the step. Alternatively, some or all of the functions of the remote controller 90 may be realized by a dedicated circuit included in the control unit 91. That is, some or all of the functions of remote control 90 may be realized by hardware.

(Operation of drug solution administration device)
When operating the liquid medicine administration device 1 according to this embodiment, the user first takes out the cartridge 12 from the packaging container. In this state, the reservoir 18 of the cartridge 12 is not filled with the chemical liquid, and the nut portion 24 is in a non-contact position where it does not come into contact with the plunger 20 (see FIG. 5).

Next, the user adjusts the position of the plunger 20 with respect to the reservoir 18, and fills the reservoir 18 with an arbitrary amount of the medicinal liquid through the introduction port 26 from a medicinal liquid container such as a vial in which the medicinal liquid is sealed and stored. Thereafter, the user connects the device main body 14 to the cartridge 12. As a result, the power of the battery 42 of the cartridge 12 is supplied to the components of the apparatus main body 14, and the output gear 48 of the gear box 46 of the apparatus main body 14 meshes with the spur gear 50 of the cartridge 12. The control unit 71, the storage unit 72, and the like are activated by receiving power from the battery 42.

Subsequently, the user fills the cartridge 12 taken out from the packaging container with a drug solution, connects the cartridge 12 and the device main body 14, and then primes the drug solution administration device 1. Priming refers to an operation in which the nut portion 24 of the drug solution administration device 1 is locked to the plunger 20 and the flow path of the drug solution administration device 1 including the outlet pipe 29 is filled with the drug solution. Specifically, the user operates the remote control 90 to rotate the motor 44 in the forward direction. As a result, the rotational driving force of the motor 44 is transmitted to the feed screw shaft 22 via the gear box 46, the spur gear 50, and the transmission shaft 52, so the feed screw shaft 22 rotates and the nut portion 24 is moved against the guide wall. While sliding 68, proceed toward the plunger 20 side.

When the nut portion 24 advances toward the distal end side of the reservoir 18, the pair of claw portions 38 hit the wall surface forming the through hole 64 of the nut portion 24, and the pair of extension portions 36 are bent so as to approach each other. When the claw portion 38 passes through the through hole 64, the extension portion 36 returns to its original state from the bent state, and the nut portion 24 is locked to the rear end portion of the plunger 20. This allows the nut portion 24 to press the plunger 20 toward the tip side. Thereafter, by further advancing the nut portion 24, the chemical liquid in the reservoir 18 is pressed by the plunger 20, and the inner hole of the outlet tube 29 is filled with the chemical liquid, thereby completing priming. This priming is completed when the user visually confirms that the drug solution has been discharged from the connecting needle tube that is fluidly connected to the outlet tube 29 and exposed to the outside of the drug solution administration device 1 . When the user visually confirms that the drug solution has been discharged from the connecting needle tube, the user instructs the drug solution administration device 1 to stop priming. For example, the remote controller 90 may display an image of the priming stop button on the display of the output unit 95, and may notify the liquid drug administration device 1 that the motor 44 has stopped in response to the user selecting the priming stop button.

Subsequently, the user adheres the cradle device 11 to a predetermined position on the skin, uses the puncture mechanism to indwell the cannula of the connection port 106 in the living body, and locks the connection port 106 to the cradle device 11 . Next, the user attaches the pump body 10, to which the cartridge 12 and the device body 14 are connected, to the cradle device 11, so that the outlet tube 29 and the cannula communicate with each other. By controlling the rotation of the motor 44 by the control unit 71 in this state, the medicinal solution in the reservoir 18 is continuously or intermittently administered into the living body. The control unit 71 controls the rotation of the motor 44 according to the schedule for drug administration instructed by the remote controller 90, and administers the drug at various rates such as basal rate or bolus depending on the patient's condition. The basal rate is the amount of drug solution per unit time that corresponds to the basal secretion of insulin. A bolus is an amount of drug solution that corresponds to the additional secretion of insulin in response to a meal or an increase in blood sugar level.

The reservoir 18 of the cartridge 12 is filled with an amount of drug solution to be administered in a dosing cycle of a fixed number of days. After the medicinal solution filled in the reservoir 18 is administered into the living body over a period of, for example, three days to one week, the cartridge 12 is replaced and discarded. The cartridge 12 is replaced with a new one after each administration cycle. Each time the cartridge 12 is replaced, the reservoir 18 of the cartridge 12 is filled with a chemical solution, the cartridge 12 is connected to the device main body 14, and a priming operation is performed. Through such operations, while administering the medicinal solution, the medicinal solution administration device 1 can estimate the amount of the medicinal solution administered based on, for example, the number of revolutions of the motor 44 performed during priming and liquid feeding. Since the liquid medicine administration device 1 according to the present embodiment includes a disposable cartridge 12 and a reusable device body 14, running costs can be reduced.

The amount of drug solution filled into the reservoir 18 of the cartridge 12 varies depending on the age and condition of the patient, even if the length of the administration cycle is the same. For example, when the reservoir 18 is filled with three days' worth of liquid medicine, the cartridge 12 for adults is filled with more liquid medicine than the cartridge 12 for children.

As described above, after filling the cartridge 12 with the drug solution, the user connects the cartridge 12 and the device main body 14, and primes the drug solution administration device 1. Here, when filling the reservoir 18 with the chemical solution, or when the cartridge 12 is in a shipping state, if one or both of the extension parts 36 of the pair of pushers 32 are bent and the direction of the claw part 38 is shifted. There is. In such a case, during the priming process for connecting the plunger 20 and the nut part 24, the plunger 20 is initially pushed by friction until the claw part 38 passes through the through hole 64 of the nut part 24, and the tip of the connecting needle tube is pushed. The chemical solution may come out.

In the conventional drug solution administration device, there is a possibility that the user may mistakenly think that priming has been completed upon visual confirmation of the drug solution ejection, and end the priming immediately. In this case, since the drug solution is subsequently administered even though the plunger and the nut are not connected, a sufficient amount of drug solution cannot be administered until the plunger and the nut are completely connected. , there was a risk that the patient would develop hyperglycemia. As described above, in the conventional liquid drug administration device, there is room for improvement in ensuring that priming is completed.

In the priming operation, the liquid drug administration device 1 according to the present embodiment does not immediately stop the rotation of the motor 44 upon receiving a priming stop instruction from the user, but maintains the rotation of the motor 44 for a certain number of rotations and then maintains the rotation of the motor 44. make it stop. Therefore, the drug solution administration device 1 can more reliably engage the nut portion 24 with the plunger 20 and complete priming. According to the liquid drug administration device 1, hyperglycemia due to disconnection of the plunger 20 and the nut portion 24 can be more effectively prevented.

FIG. 9 is a flowchart illustrating an example of the operation procedure of the liquid drug administration device 1 of FIG. 1. The operation of the liquid drug administration device 1 described with reference to FIG. 9 may correspond to one method of controlling the liquid drug administration device 1. The operations of each step in FIG. 9 can be executed based on control by the control unit 71 of the liquid drug administration device 1 or the control unit 91 of the remote controller 90. An example in which the user starts the priming operation after filling the reservoir 18 with a medicinal solution and connecting the device main body 14 to the cartridge 12 will be described below.

In step S1, the control unit 71 determines whether or not the user has instructed to start priming.

Specifically, for example, the control unit 71 displays an image for instructing the start of priming on the display of the output unit 95 of the remote control 90, and when the user selects the image via the input unit 94, An instruction to start priming (first instruction) may be accepted. Alternatively, when the drug solution administration device 1 includes an output section and an input section, the control section 71 selectably displays an image for instructing the start of priming on the display of the output section of the drug solution administration device 1, An instruction to start priming may be accepted. If the control unit 71 is instructed to start priming (YES in step S1), the process proceeds to step S2, and if not (NO in step S1), it continues the processing in step S1 until the start of priming is instructed. Note that in step S2, the control unit 91 of the remote controller 90 may determine whether or not the user has instructed to start priming based on the user's selection via the input unit 94.

In step S2, the control unit 71 rotates the motor 44 in the forward direction at a first rotational speed to advance the nut portion 24 toward the tip side of the reservoir 18.

Specifically, for example, the first rotational speed may be set to be a rotational speed that is sufficiently faster than the rotational speed of the motor 44 during drug administration. Thereby, the nut portion 24 moves toward the distal end side of the reservoir 18 at the first speed. For example, the first rotational speed may be set to such a speed that a large amount of the medicinal solution does not flow out when the user stops rotating the motor 44 after the user visually confirms that the medicinal solution has been discharged from the connecting needle tube. Thereby, even if the user performs an operation to stop the forward movement of the nut portion 24 after visually confirming that the chemical liquid has been discharged from the connecting needle tube, it is possible to prevent a large amount of the chemical liquid from flowing out. However, the first rotational speed may be such that the time from when the user starts selecting a button or the like until the medicinal liquid is discharged from the connecting needle tube is short. Note that, in step S2, the control unit 91 of the remote controller 90 may instruct the control unit 71 of the liquid drug administration device 1 to rotate the motor 44 at the first rotation speed.

In step S3, the control unit 71 determines whether the user has instructed to stop priming.

Specifically, for example, the control unit 71 displays an image for instructing to stop priming on the display of the output unit 95 of the remote control 90, and when the user selects the image via the input unit 94, An instruction to stop priming (second instruction) may be accepted. Alternatively, when the drug solution administration device 1 includes an output section and an input section, the control section 71 selectably displays an image for instructing to stop priming on the display of the output section of the drug solution administration device 1, An instruction to stop priming may be accepted. Further, the control unit 71 rotates the motor 44 in the forward direction while the user selects an image that accepts an instruction to rotate the motor 44 (YES in S1, S2), and when the selection of that image is completed. , it may be determined that priming stop has been instructed. If the control unit 71 is instructed to stop priming (YES in step S3), the process proceeds to step S4, and if not (NO in step S3), it continues the process in step S3 until it is instructed to stop priming. Note that in step S3, the control unit 91 of the remote controller 90 may determine whether or not the user has instructed to stop priming based on the user's selection via the input unit 94.

In step S4, the control unit 71 rotates the motor 44 (forward rotation) by a constant number of rotations M in a direction in which the nut portion 24 moves toward the tip side of the reservoir 18 at a first rotation speed. As a result, the nut portion 24 moves a certain distance toward the distal end of the reservoir 18 at the first speed. The constant rotational speed M may be, for example, a rotational speed for moving the nut portion 24 by a length that is approximately the same as the length of the claw portion 38 or slightly exceeds the length. Alternatively, the constant number of rotations M is the number of rotations to move the nut part 24 by the distance determined by experimenting to determine the movement distance of the nut part 24 necessary to ensure that the claw part 38 is inserted into the through hole 64. You can also use it as Further, in step S4, the control unit 71 does not rotate the motor 44 in the forward direction by a constant number of rotations M, but rotates the motor 44 in the forward direction by the number of rotations that moves the nut part 24 by a certain distance toward the tip side of the reservoir 18. You can also rotate it.

In this manner, the drug solution administration device 1 continues to rotate the motor 44 in the forward direction by a constant number of rotations M even after the user instructs the user to stop priming. As a result, even if at least one of the pair of claws 38 is not fully inserted into the through hole 64 at the stage when the instruction to stop priming is given, the drug solution administration device 1 can further insert the nut 24 into the reservoir. 18 to the tip side automatically. Therefore, the liquid drug administration device 1 according to the present embodiment can connect the nut portion 24 and the reservoir 18 more reliably to complete priming. In addition, in step S4, the control unit 91 of the remote controller 90 may instruct the control unit 71 of the liquid medicine administration device 1 to rotate the motor 44 forward by the number of rotations M at the first rotation speed.

In step S5, the control unit 71 stops the rotation of the motor 44. Then, the control unit 71 ends the processing of the flowchart. Note that, in step S5, the control unit 91 of the remote controller 90 may instruct the control unit 71 of the liquid drug administration device 1 to stop the motor 44. After completing the process of step S5, the control unit 71 ends the process of the flowchart.

As described above, the drug solution administration device 1 that administers the drug solution filled in the reservoir 18 into a living body by the pressing action of the plunger 20 includes the reservoir 18, the outlet tube 29, the plunger 20, the nut section 24, the drive section 40, and the control section. A section 71 is provided. The reservoir 18 is filled with a medical solution. The outlet pipe 29 connects to the reservoir 18 and guides the chemical solution out of the reservoir 18 . Plunger 20 is provided within reservoir 18 and is movable in the longitudinal direction of reservoir 18 . By moving in the movable region, the nut portion 24 can engage with the plunger 20 and press the plunger 20 toward the tip side of the reservoir 18 . The drive section 40 moves the nut section 24 in a movable region. In such a configuration, the control section 71 controls the nut section 24 in response to receiving the first instruction (instruction to start priming) from the user while the nut section 24 is not engaged with the plunger 20. The drive unit 40 is controlled to start moving toward the tip side of the reservoir 18. Furthermore, in response to receiving a second instruction (instruction to stop priming) from the user, the control section 71 continues to move the nut section 24 by a predetermined moving distance, and then moves the nut section 24. The drive unit 40 is controlled to stop.

In this way, after the start of priming, the drug solution administration device 1 does not immediately stop the movement of the nut portion 24 in response to receiving the second instruction from the user, but moves the nut portion 24 by a predetermined moving distance. After continuing the movement of the nut part 24, the movement of the nut part 24 is stopped. Therefore, even if the plunger 20 and the nut part 24 are not sufficiently engaged at the time of receiving the second instruction from the user, the liquid drug administration device 1 automatically moves the nut part 24 by a predetermined movement distance. Push the section 24 toward the plunger 20. Therefore, the drug solution administration device 1 can more reliably lock the nut portion 24 to the plunger 20 and complete priming.

Further, the plunger 20 may include at least one (for example, two) extending portions 36 each having a claw portion 38 at its rear end. The nut portion 24 may include a through hole 64 into which the plunger 20 can be locked by inserting the claw portion 38 therethrough. In response to receiving the second instruction from the user, the control unit 71 continues to move the nut part 24 by a distance corresponding to the size of the claw part 38 as a predetermined movement distance, and then moves the nut part 24. The drive unit 40 may be controlled to stop the movement of the unit 24. In this way, in response to receiving the second instruction from the user, the drug solution administration device 1 continues to move the nut portion 24 by a distance corresponding to the size of the claw portion 38, and then moves the nut portion 24 by a distance corresponding to the size of the claw portion 38. Stop moving. Therefore, the liquid medicine administration device 1 can more reliably insert the claw portion 38 into the through hole 64 and lock the nut portion 24 to the plunger 20.

In the present embodiment, an example has been described in which the plunger 20 is provided with a pair of claws 38 at the rear end portion and the nut portion 24 is provided with a through hole 64. However, by pushing the nut portion 24 into the plunger 20, , as long as the plunger 20 and the nut part 24 can be locked, the structure is not limited to this. For example, the plunger 20 may be provided with a through hole at the rear end, and the nut portion 24 may be provided with a claw portion. Further, the number of claw portions 38 and through holes 64 may be one, or three or more. Alternatively, the plunger 20 and the nut portion 24 may be locked with each other, for example, by a latch structure or an uneven structure.

The flowchart in FIG. 9 shows an example in which, when an instruction to stop priming is given, the motor 44 is rotated in the forward direction by a certain number of rotations M, and then the motor 44 is stopped. , the motor 44 may be rotated in the forward direction. FIG. 10 is a flowchart showing another example of the operation procedure of the liquid medicine administration device 1 of FIG. 1. The operation of the liquid drug administration device 1 described with reference to FIG. 10 may correspond to one method of controlling the liquid drug administration device 1. The operations in each step in FIG. 10 can be executed based on control by the control unit 71 of the liquid drug administration device 1 or the control unit 91 of the remote controller 90. An example in which the user starts the priming operation after filling the reservoir 18 with a medicinal solution and connecting the device main body 14 to the cartridge 12 will be described below.

In step S11, the control unit 71 determines whether or not the user has instructed to start priming. If the control unit 71 is instructed to start priming (YES in step S11), the process proceeds to step S12, and if not (NO in step S11), it continues the process in step S11 until the start of priming is instructed. Since the process in step S11 is similar to step S1 in FIG. 9, detailed explanation will be omitted.

In step S<b>12 , the control unit 71 rotates the motor 44 in the forward direction at a first rotational speed to move the nut portion 24 forward toward the tip side of the reservoir 18 . Since the process in step S12 is similar to step S2 in FIG. 9, detailed explanation will be omitted.

In step S13, the control unit 71 determines whether the user has instructed to stop priming. If the control unit 71 is instructed to stop priming (YES in step S13), the process proceeds to step S14, and if not (NO in step S13), it continues the process in step S13 until it is instructed to stop priming. Since the process in step S13 is similar to step S3 in FIG. 9, detailed explanation will be omitted.

In step S14, the control unit 71 rotates the motor 44 by a constant number of rotations M in a direction in which the nut portion 24 moves toward the tip side of the reservoir 18 (forward rotation) at a first rotation speed. The constant rotation speed M is, for example, a predetermined ratio of the rotation speed for moving the nut portion 24 by a length that is approximately the same as the length of the claw portion 38 or slightly exceeds the length, such as one-half or one-third. It may be one or a quarter of that. Alternatively, the constant number of rotations M is the number of rotations to move the nut part 24 by the distance determined by experimenting to determine the movement distance of the nut part 24 necessary to ensure that the claw part 38 is inserted into the through hole 64. It may be a predetermined ratio of, for example, one-half, one-third, or one-fourth. In addition, in step S14, the control unit 71 does not rotate the motor 44 in the forward direction by a certain number of rotations M, but by a predetermined ratio of the number of rotations that moves the nut portion 24 by a certain distance toward the tip side of the reservoir 18. For example, the motor 44 may be rotated forward by one-half, one-third, or one-fourth.

In step S15, the control unit 71 stops the rotation of the motor 44. Since the process in step S15 is similar to step S5 in FIG. 9, detailed explanation will be omitted.

In step S16, the control unit 71 determines whether the user has instructed to stop or continue priming. Here, if the user visually confirms that the drug solution is continuously discharged from the connecting needle tube, the user determines that the claw portion 38 has sufficiently penetrated the through hole 64 and instructs the user to stop priming. good. On the other hand, if the user visually confirms that the chemical solution is not continuously discharged from the connecting needle tube, the user determines that the pair of claws 38 are not fully inserted into the through hole 64 and instructs to continue priming. good.

Specifically, for example, the control unit 71 displays an image for instructing to stop priming (hereinafter referred to as a “stop image”) and an image for instructing to continue priming on the display of the output unit 95 of the remote controller 90. Images (hereinafter referred to as "continuation images") may be displayed in a selectable manner. Then, when the user selects one of the two images via the input unit 94, the control unit 71 receives an instruction to stop priming (fourth instruction) or an instruction to continue priming (third instruction). It's okay. Alternatively, when the drug solution administration device 1 includes an output section and an input section, the control section 71 selectably displays a still image and a continuous image on the display of the output section of the drug solution administration device 1 to stop priming. Alternatively, an instruction to continue may be accepted. If the control unit 71 is instructed to stop priming (stopped in step S16), it ends the process of the flowchart, and if it is instructed to continue priming (continued in step S16), it proceeds to step S17. Note that in step S16, the control unit 91 of the remote controller 90 may determine whether the user has instructed to stop or continue priming based on the user's selection via the input unit 94. In addition, in step S16, when a continuation instruction (third instruction) is received, the process proceeds to step S14, and the nut part 24 is rotated at a constant number of rotations in the direction of moving toward the tip side of the reservoir 18 at the first rotational speed. The motor 44 may be rotated by M (forward rotation).

In step S17, the control unit 71 starts normal rotation of the motor at the first rotation speed. Thereby, the nut portion 24 moves toward the distal end side of the reservoir 18 at the first speed. Note that, in step S17, the control unit 91 of the remote controller 90 may instruct the control unit 71 of the liquid drug administration device 1 to start rotating the motor 44 at the first rotation speed.

In step S18, the control unit 71 determines whether the user has instructed to stop priming.

Specifically, for example, the control unit 71 displays an image for instructing to stop priming on the display of the output unit 95 of the remote control 90, and when the user selects the image via the input unit 94, An instruction to stop priming may be accepted. Alternatively, when the drug solution administration device 1 includes an output section and an input section, the control section 71 selectably displays an image for instructing to stop priming on the display of the output section of the drug solution administration device 1, An instruction to stop priming may be accepted. Further, the control unit 71 rotates the motor 44 in the forward direction while the continuous image is selected by the user (YES in S16, S17), and determines that an instruction to stop priming has been given when the selection of that image is completed. It's okay. If the control unit 71 is instructed to stop priming (YES in step S18), the process proceeds to step S19, and if not (NO in step S18), it continues the process in step S18 until it is instructed to stop priming. Note that in step S18, the control unit 91 of the remote controller 90 may determine whether or not the user has instructed to stop priming based on the user's selection via the input unit 94.

In step S19, the control unit 71 stops the rotation of the motor 44. Then, the control unit 71 ends the processing of the flowchart. Note that, in step S19, the control unit 91 of the remote controller 90 may instruct the control unit 71 of the liquid drug administration device 1 to stop the motor 44. After completing the process of step S19, the control unit 71 ends the process of the flowchart.

In this way, in response to receiving the second instruction (instruction to stop priming) from the user, the control section 71 continues to move the nut section 24 by a predetermined moving distance, and then moves the nut section 24. The drive unit 40 is controlled to stop the movement. Thereafter, the control unit 71 may end the process of the flowchart in response to receiving the fourth instruction (instruction to stop priming) from the user. Therefore, by visually confirming that the claw portion 38 is sufficiently inserted into the through hole 64 at an early stage, the user can prevent unnecessary discharge of the chemical solution. On the other hand, the control unit 71 may control the drive unit 40 to restart the movement of the nut portion 24 in response to receiving a third instruction (instruction to continue priming) from the user. Therefore, after giving the second instruction, the user can further securely lock the nut portion 24 to the plunger 20 by giving a third instruction based on the status of discharge of the drug from the connecting needle tube, etc. I can do it.

Further, after restarting the movement of the nut portion 24 in response to receiving the third instruction (instruction to continue priming) from the user, the control unit 71 receives a fourth instruction (instruction to stop priming) from the user. Depending on this, the drive section 40 may be controlled to stop the movement of the nut section 24. Therefore, after restarting the movement of the nut part 24 by giving the third instruction, the user can stop the movement of the nut part 24 at a desired timing and stop further discharge of the chemical solution.

The present disclosure is not limited to the embodiments described above. For example, multiple blocks depicted in the block diagram may be combined, or one block may be divided. Instead of being performed chronologically according to the description, the steps described in the flowchart may be performed in parallel or in a different order depending on the processing power of the device performing each step or as necessary. . Other changes are possible without departing from the spirit of the present disclosure.

1 Chemical solution administration device 10 Pump body 11 Cradle device 12 Cartridge 14 Device body 16 Base portion 18 Reservoir 20 Plunger 22 Feed screw shaft 24 Nut portion 26 Introduction port 28 Outlet port 29 Outlet pipe 30 Plunger body 32 Pusher 34 Seal member 36 Extension Part 38 Claw part 39 Bearing 40 Drive part 42 Battery 44 Motor 46 Gear box 48 Output gear 50 Spur gear 52 Transmission shaft 54 Terminal 56 Bearing 58 Nut main body 60 Slide part 62 Screw hole 64 Through hole 66 Reinforcement cover 68 Guide wall 70 Lid Body 71 Control part 72 Storage part 73 Communication part 79 Bus 106 Connection port 111 Housing 121 Top part 123 Front part 124 Back part 126 Side part 137 Guide groove part 138 Engagement hook part 141 Placement part 143 Side wall part 144 Side wall part 151 Guide Rail 152 Detection rail 153 Sliding rail 154 Fitting hole 155 Mounting part 156 Posture correction part 158 Notch 162 Engagement receiving part 181 Port body 182 Cap 90 Remote control 91 Control part 92 Storage part 93 Communication part 94 Input part 95 Output part 99 Bus 100 drug administration system

Claims (6)

A drug solution administration device that administers a drug solution filled in a reservoir into a living body by the pressing action of a plunger,
the reservoir filled with the chemical solution;
a flow path that connects to the reservoir and leads the chemical solution out of the reservoir;
the plunger provided within the reservoir and movable in the longitudinal direction of the reservoir;
a movable part that can move in a movable region to engage with the plunger and press the plunger toward the tip side of the reservoir;
a drive section that moves the movable section in the movable region;
a control unit;
Equipped with
The control unit includes:
In a state where the movable part is not locked to the plunger, the movable part starts moving toward the tip side of the reservoir in response to receiving a first instruction from a user,
in response to receiving a second instruction from the user, continuing to move the movable part by a predetermined moving distance, and then stopping the movement of the movable part;
A liquid drug administration device that controls the drive unit in such a manner. The plunger includes at least one extending portion each having a claw portion at a rear end thereof,
The movable part includes a through hole through which the claw part can lock the plunger,
In response to receiving the second instruction from the user, the control section continues to move the movable section by a distance corresponding to the size of the claw section as the predetermined moving distance. controlling the drive unit to stop the movement of the movable unit,
The liquid drug administration device according to claim 1. In response to receiving the second instruction from the user, the control unit continues to move the movable part by a predetermined moving distance and then stops moving the movable part, and then The liquid drug administration device according to claim 1 or 2, wherein the drive unit is controlled to resume movement of the movable unit in response to receiving a third instruction from the user. The control section restarts the movement of the movable section in response to receiving the third instruction from the user, and then restarts the movement of the movable section in response to receiving a fourth instruction from the user. The liquid drug administration device according to claim 3, wherein the drive unit is controlled to stop movement. A liquid drug administration device according to any one of claims 1 to 4,
a remote control for the user to operate the drug solution administration device;
A liquid drug administration system comprising: a reservoir filled with a chemical solution;
a flow path that connects to the reservoir and leads the chemical solution out of the reservoir;
a plunger provided in the reservoir and movable in the longitudinal direction of the reservoir;
a movable part that can move in a movable region to engage with the plunger and press the plunger toward the tip side of the reservoir;
a drive section that moves the movable section in the movable region;
a control unit;
Equipped with
A method for controlling a drug solution administration device that administers the drug solution filled in the reservoir into a living body by a pressing action of the plunger, the method comprising:
The control section,
in a state where the movable part is not locked to the plunger, the movable part starts moving toward the distal end side of the reservoir in response to receiving a first instruction from a user;
In response to receiving a second instruction from the user, continuing the movement of the movable part by a predetermined moving distance, and then stopping the movement of the movable part;
A method for controlling a liquid drug administration device, including:

Images