Chemical liquid administration device, its control method, and chemical liquid administration system

Abstract

To shorten a user's standby time in a priming operation.SOLUTION: A liquid medicine administration device includes: a reservoir to which 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 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 determines whether or not an operation to fill the flow channel with the liquid medicine is executed by a user beforehand. In the case where it is determined that the operation to fill the flow channel with the liquid medicine is not executed, the control part controls the drive part so that the movable part moves to the tip side of the reservoir at a first speed by a predetermined moving distance, and controls the drive part so that the movable part moves to the tip side of the reservoir while an instruction for advance of the movable part is given by the user.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a drug solution administration device, a control method thereof, and a drug solution administration system. [Background technology]

[0002] BACKGROUND ART There is known a drug solution administration device that continuously or intermittently administers a drug solution such as insulin filled in a reservoir (syringe) into a living body by the pressing action of a plunger via a nut portion (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-287944 Summary of the Invention [Problem to be solved by the invention]

[0004] 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 drug solution. Priming begins when the user instructs the drug solution administration device to perform priming, and ends when the user visually confirms that drug solution has been discharged from the connecting needle tube and instructs the drug solution administration device to stop priming.

[0005] In conventional medicinal liquid administration devices, it may take time for the medicinal liquid to be discharged from the connecting needle tube after the user issues a priming command, and there is room for improvement in terms of the user's waiting time.

[0006] An object of the present disclosure is to provide a medicinal liquid administration device, a control method thereof, and a medicinal liquid administration system that can shorten the waiting time of a user during a priming operation. [Means for solving the problem]

[0007] A drug solution administration device according to one 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 the pressing action of a plunger, and includes: a reservoir filled with the drug solution; a flow path connected to the reservoir and that discharges the drug solution out of the reservoir; the plunger that is provided in the reservoir and is movable in the longitudinal direction of the reservoir; a movable part that is capable of pressing the plunger toward the tip of the reservoir by moving within a movable area; a drive part that moves the movable part within the movable area; and a control unit. The control unit determines whether or not an operation to fill the flow path with the drug solution has been performed in advance by a user, and if it is determined that an operation to fill the flow path with the drug solution has not been performed, controls the drive unit to move the movable part a predetermined distance toward the tip of the reservoir, and controls the drive unit to move the movable part toward the tip of the reservoir only while the user is instructing the movable part to move forward.

[0008] In one embodiment, the movable part can be connected to the plunger by being pressed against the plunger, and the control part controls the drive part so that the movable part moves toward the tip side of the reservoir until it connects to the plunger in response to an instruction from the user to start priming.

[0009] In one embodiment, in response to a command from the user to start priming, the control unit controls the drive unit to move the movable part toward the tip side of the reservoir at a first speed until it connects to the plunger, and if it is determined that no operation has been performed to fill the flow path with the medicinal solution, the control unit controls the drive unit to move the movable part toward the tip side of the reservoir at a second speed, the first speed being faster than the second speed.

[0010] In one embodiment, the control unit detects that the movable part is connected to the plunger based on a moving speed of the movable part.

[0011] In one embodiment, the control unit accepts a selection of whether or not an operation to fill the flow path with the chemical liquid has been performed via an input / output unit, and if the user selects that an operation to fill the flow path with the chemical liquid has not been performed, it determines that an operation to fill the flow path with the chemical liquid has not been performed.

[0012] In one embodiment, the control unit receives an instruction to move the movable unit forward from the user via an input / output unit.

[0013] In one embodiment, a medicinal liquid administration system includes the medicinal liquid administration device and a remote control for a user to operate the medicinal liquid administration device.

[0014] A control method for a drug solution administration device according to one embodiment of the present disclosure comprises a reservoir filled with drug solution, a flow path connected to the reservoir and for discharging the drug solution outside the reservoir, a plunger provided within the reservoir and movable in the longitudinal direction of the reservoir, a movable part capable of pressing the plunger toward the tip of the reservoir by moving within a movable area, a drive part that moves the movable part within the movable area, and a control part, and the drug solution filled in the reservoir is administered into a living body by the pressing action of the plunger, the control part including the steps of: determining by the control part whether or not an operation to fill the flow path with the drug solution has been performed in advance by a user; controlling the drive part so that the movable part moves toward the tip of the reservoir by a predetermined distance when it is determined that an operation to fill the flow path with the drug solution has not been performed; and controlling the drive part so that the movable part moves toward the tip of the reservoir only while the user is instructing the movable part to move forward. [Effects of the Invention]

[0015] According to an embodiment of the present disclosure, it is possible to reduce the waiting time of the user during the priming operation. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a diagram illustrating an example of a drug solution administration system according to an embodiment. [Figure 2] FIG. 2 is a perspective view of the drug solution administration device of FIG. 1. [Figure 3] FIG. 2 is an example of a perspective view of the drug solution administration device of FIG. 1 in a separated state. [Figure 4] 4 is an example of an exploded perspective view of the pump body of FIG. 3. [Figure 5] 10A and 10B are diagrams illustrating an example of a cartridge in a state where a nut portion is in a non-contact position. [Figure 6] FIG. 10 is a diagram showing an example of a cartridge with a nut portion in a predetermined position. [Figure 7] 2 is a block diagram showing an example of a configuration related to control of the chemical liquid administration device of FIG. 1. FIG. [Figure 8] 2 is a block diagram showing an example of a hardware configuration of the remote control of FIG. 1. [Figure 9A] 2 is a flowchart showing the operation procedure of the drug solution administration device of FIG. 1. [Figure 9B] 2 is a flowchart showing the operation procedure of the drug solution administration device of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In each drawing, parts having the same configuration or function are denoted by the same reference numerals. In the description of this embodiment, duplicated descriptions of the same parts may be omitted or simplified as appropriate.

[0018] (Configuration of drug administration system) 1 is a diagram showing an example of a medicinal liquid administration system 100 according to one embodiment. The medicinal liquid administration system 100 administers a medicinal liquid such as insulin into a living body of a patient. The medicinal liquid administration system 100 includes a medicinal liquid administration device 1 and a remote control 90.

[0019] As will be described later with reference to FIG. 4 etc., 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. The drug solution administration device 1 may be, for example, a portable device that can be attached to the abdomen or the like of a patient (patch type). However, the drug solution administration device 1 is not limited to the patch type, and may also be a tube type or the like.

[0020] The remote control 90 is a device that allows a user, such as a patient, to operate the medicinal liquid administration device 1. The remote control 90 notifies the user of information received from the medicinal liquid administration device 1 and accepts user operations on the medicinal liquid administration device 1. In this embodiment, the remote control 90 is realized by a dedicated device compatible with the medicinal liquid administration device 1, but it may also be realized by a general-purpose information processing device such as a smartphone or tablet. Also, in this embodiment, an example is described in which the remote control 90 serves as a user interface for notifying the user of information and accepting information input from the user, but instead, all or part of the functions of the user interface may be provided in the medicinal liquid administration device 1.

[0021] The medicinal liquid administration device 1 and the remote control 90 are communicably connected to each other via a wireless communication line, a wired communication line, or a combination thereof. An example in which the medicinal liquid administration device 1 and the remote control 90 are communicably connected to each other via Bluetooth (registered trademark) will be described below.

[0022] (Configuration of drug solution administration device) Fig. 2 is an example of a perspective view of the medicinal liquid administration device 1 of Fig. 1. Fig. 3 is an example of a perspective view of the medicinal liquid administration device 1 of Fig. 1 when separated. The medicinal liquid administration device 1 has a pump body 10, a cradle device 11 to which the pump body 10 is detachably attached, and a connection port 106 attached to the cradle device 11. The pump body 10 and the cradle device 11 have a structure in which they engage with each other and can be repeatedly detached.

[0023] The pump body 10 includes a housing 111 that houses each component of the medicinal solution administration device 1, such as the reservoir 18 and the plunger 20. As illustrated in Figures 2 and 3, the housing 111 may be formed in a flat, approximately rectangular parallelepiped shape with rounded corners. An upper surface 121 of the housing 111 is one surface of the pump body 10 that is located opposite the side that is attached to the cradle device 11. The upper surface 121 may be formed in a substantially rectangular shape with rounded corners when viewed from above. A front surface 123 and a back surface 124 that face each other are connected substantially vertically to an end of the upper surface 121 in a first direction. A side surface 126 is connected substantially vertically to an end of the upper surface 121 in a second direction.

[0024] As shown in FIG. 3 , pump body 10 may have an engagement structure at side surface portion 126 that allows pump body 10 and cradle device 11 to be repeatedly detached from each other. The engagement structure may include, for example, a hook mechanism. Specifically, side surface portion 126 may be formed with guide groove portion 137 and engagement hook portion 138. Engagement hook portion 138 may be formed on a side closer to back surface portion 124 than guide groove portion 137. Engagement hook portion 138 may be detachably engaged with an engagement receiver 162 of cradle device 11, which will be described later.

[0025] Cradle device 11 is configured to be able to support pump body 10. As shown in Figures 2 and 3, cradle device 11 has a substantially flat mounting surface 141 and side walls 143, 144. Mounting surface 141 is formed in a substantially rectangular shape with curved corners when viewed from above. When pump body 10 is attached to cradle device 11, the bottom surface of housing 111 of pump body 10 is placed on mounting surface 141.

[0026] A detection rail 152, a sliding rail 153, and a mounting portion 155 may be provided on one surface of the mounting surface portion 141. The connection port 106 may be attached to the mounting portion 155. The mounting portion 155 may be provided with an insertion hole through which the cannula of the connection port 106 passes.

[0027] The detection rail 152 is a protrusion that protrudes from one surface of the mounting surface 141. The detection rail 152 is used by the pump main body 10 to detect the attachment of the cradle device 11. The thickness of the detection rail 152 gradually increases from the mounting surface 141 toward the side wall 144. The detection rail 152 extends a predetermined length parallel to the side wall 143. When the pump main body 10 is attached to the cradle device 11, the detection rail 152 enters a detection groove provided in the pump main body 10 and presses the attachment detection unit. The pump main body 10 detects the attachment of the cradle device 11 based on the pressure on the attachment detection unit. In other words, the attachment detection unit functions as a detection unit that detects whether the pump main body 10 is attached to the cradle device 11.

[0028] The sliding rail 153 extends parallel to the side wall 143 on one surface of the mounting surface 141. When the pump body 10 is attached to the cradle device 11, a sliding groove (not shown) provided on the bottom surface of the pump body 10 is slidably fitted into the sliding rail 153.

[0029] A side wall 144 extends substantially vertically from the end of the mounting surface 141 in the first direction. Opposing side walls 143 extend substantially vertically from the end of the mounting surface 141 in the second direction. When the pump body 10 is attached to the cradle device 11, the side wall 143 faces the side surface 126 of the housing 111 of the pump body 10. The side wall 144 faces the front surface 123 of the housing 111.

[0030] 3, cradle device 11 may have a fitting hole 154, which is an opening, in side wall portion 144. When pump body 10 is attached to cradle device 11, a fitting protrusion provided on front surface portion 123 of pump body 10 may fit into fitting hole 154.

[0031] Side wall portion 143 may be formed with guide rails 151, posture correction portion 156, and engagement receiving portion 162. Engagement receiving portion 162 may be an opening formed by cutting out a substantially rectangular shape from side wall portion 143. When pump body 10 is attached to cradle device 11, engagement hook portion 138 may detachably engage with engagement receiving portion 162.

[0032] As shown in Fig. 3, the guide rail 151 is a protrusion formed on the side wall portion 143. The protrusion of the guide rail 151 does not necessarily have to extend continuously. For example, as shown in Fig. 3, a notch 158 may be appropriately provided midway along the guide rail 151. When pump body 10 is mounted on cradle device 11, guide rail 151 engages with guide groove 137 provided on side surface 126 of pump body 10. This guides the mounting direction of pump body 10.

[0033] 2 and 3, posture correction portion 156 is a plate-shaped protrusion extending upward from side wall portion 143. Posture correction portion 156 may have a curved shape corresponding to the shape of the connection portion (corner) between top surface portion 121 and side surface portion 126 of housing 111 of pump body 10.

[0034] The cradle device 11 may be provided with an adhesive sheet to be attached to the patient's skin. The adhesive sheet may be attached to the other surface opposite to one surface of the mounting surface portion 141 of the cradle device 11. The adhesive sheet may have an opening (not shown) through which a cannula of the connection port 106, which will be described later, passes. The adhesive sheet may be made of a flexible material. The adhesive sheet may form an adhesive layer to be attached to the patient's skin on the surface opposite to the mounting surface portion 141. Before being attached to the patient's skin, the adhesive layer of the adhesive sheet may be covered with release paper.

[0035] The 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 a cannula is connected, the interior of the connection portion (cylindrical bore), the port body 181, and the cannula communicate with each other. A cap 182 is attached to the tip of the connection portion, and the other end of the connection portion is connected to the port body 181. The cap 182 seals the tip opening of the connection portion. This isolates the interior of the connection port 106 from the external environment.

[0036] When the connection port 106 is attached to the attachment part 155 of the cradle device 11 using a puncture mechanism (not shown), the cannula penetrates the mounting surface part 141 together with the puncture needle and protrudes to the other surface of the mounting surface part 141 (the surface to be attached to the skin).The cannula is then inserted into the living body together with the puncture needle.The puncture needle is then removed, and the cannula is left in the living body.

[0037] 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 enters the cylindrical bore by puncturing the septum surface of the cap 182. This connects the port body 181 to the outlet tube 29 (see FIG. 5, etc.) of the pump body 10, and fluidly connects the outlet tube 29 to the cannula. When the drive unit 40 (see FIG. 5, etc.) is driven, the medicinal liquid stored in the reservoir 18 of the pump body 10 is sent to the connection port 106 via the outlet tube 29 and administered to the patient from the cannula. In other words, the outlet tube 29 connects to the reservoir 18 and functions as a flow path for delivering the medicinal liquid to the outside of the reservoir 18. When the connecting needle tube is connected to the outlet tube 29, the flow path of the medicinal liquid administration device 1 may include the outlet tube 29 and the connecting needle tube.

[0038] (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 in a state where the nut portion 24 is in a non-contact position. Fig. 6 is a diagram showing an example of the cartridge 12 in a state where the nut portion 24 is in a predetermined position.

[0039] As shown in Figure 4, the pump body 10 includes a disposable cartridge 12 and a reusable device body 14. The cartridge 12 includes a base portion 16 in the shape of a flat box with one side open. The base portion 16 has a generally rectangular shape in plan view. The base portion 16 may be detachably attached to a cradle device 11 that can be attached to the patient's skin.

[0040] 4, the base part 16 is provided with a reservoir 18 filled with a medicinal solution, a plunger 20 provided in the reservoir 18, a feed screw shaft 22 disposed coaxially with the plunger 20, and a nut part (movable part) 24 threaded onto the feed screw shaft 22. The base part 16 is configured as a disposable member.

[0041] Reservoir 18 extends cylindrically in the longitudinal direction of base portion 16. The outer and inner diameters of the distal end of reservoir 18 taper toward the distal end. The distal end of reservoir 18 is formed with an introduction port 26 for introducing the medicinal liquid into reservoir 18 and an outlet port 28 (see FIG. 5) for discharging the medicinal liquid from reservoir 18. An outlet tube 29 that guides the medicinal liquid from reservoir 18 to the cannula is connected to outlet port 28.

[0042] 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 liquid-tight and slidable along the axial direction of the reservoir 18. The plunger 20 has a plunger body 30 constituting the tip side and a pusher 32 provided on the plunger body 30 and constituting the rear end side. A seal member (sealing member) 34 is attached to the cylindrical rear end side of the plunger body 30. The seal member 34 is attached to the outer surface of the plunger body 30. The seal member 34 presses against the inner wall surface of the reservoir 18 to prevent leakage of the medicinal liquid filled in the reservoir 18. The seal member 34 moves back and forth along the inner wall surface of the reservoir 18 in the left-right direction in FIGS. 5 and 6 while engaging with the cylindrical inner wall surface so as to prevent leakage of the medicinal liquid from the boundary between the plunger body 30 and the inner wall surface of the reservoir 18. The size of the internal space of reservoir 18 that contains the medicinal liquid varies depending on the position of plunger body 30 in reservoir 18. In this embodiment, seal member 34 is made of an O-ring, but is not limited to this as long as it can prevent the medicinal liquid in reservoir 18 from leaking from plunger body 30. Seal member 34 may be made of an elastic material, such as silicone rubber.

[0043] The pusher 32 has a pair of extensions 36 that extend rearward from the plunger body 30 to the outside of the reservoir 18, and a pair of claws 38 provided at the rear ends of the extensions 36. One end of the feed screw shaft 22 is journaled by a bearing 39, and constitutes a drive unit 40 that moves the nut unit 24.

[0044] The drive unit 40 further includes a battery 42 as a power source, a motor 44 driven by the battery 42, a gearbox (power transmission mechanism) 46 that reduces the rotational driving force of the motor 44 and transmits it, and a transmission shaft 52 to which a spur gear 50 that meshes with an output gear 48 of the gearbox 46 is fixed and which is engaged with the feed screw shaft 22 so as to be able to rotate integrally with the feed screw shaft 22.

[0045] In this embodiment, the battery 42 and the transmission shaft 52 are provided in the cartridge 12, and the motor 44 and the gear box 46 are provided in the device main body 14. By providing the motor 44 and the gear box 46 in the device main body 14 in this way, the cost of the cartridge 12 can be reduced.

[0046] The battery 42 is provided with terminals 54 that are electrically connected to the motor 44 of the device body 14 when the device body 14 is connected to the cartridge 12. The transmission shaft 52 is supported by a pair of bearings 56 provided in the base portion 16 in a state where it is disposed coaxially with the feed screw shaft 22.

[0047] When the motor 44 rotates, its rotational force is transmitted to the feed screw shaft 22, and the rotation of the feed screw shaft 22 moves the nut portion 24 toward or away from the reservoir 18. Hereinafter, the rotation of the motor 44 that moves the nut portion 24 toward the reservoir 18 is referred to as forward rotation (forward rotation). Rotation in the direction opposite to the forward direction is referred to as reverse rotation (reverse rotation). The motor 44 is configured to be capable of rotating in both the forward and reverse directions. The motor 44 is configured so that if a force greater than a certain level is applied to the forward or reverse rotation, the rotational drive force is not transmitted to the gearbox 46 and subsequent components. For example, a stepping motor may be used as the motor 44. If a stepping motor is used, when a force greater than a certain level is applied to the forward or reverse rotation, the motor 44 loses synchronization with the input pulse and no longer transmits the rotational drive force (loses synchronism). Even if the motor 44 rotates in the reverse direction while the nut portion 24 is in contact with the bearing 56 due to step-out, it is possible to prevent damage caused by excessive force being applied to mechanisms such as the motor 44, gear box 46, and transmission shaft 52. A rotary encoder (not shown) is provided on the output shaft of the motor 44, and it is possible to determine whether the motor 44 has become out of synchronization with the input pulse (step-out) 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.

[0048] The nut portion 24 is integrally molded from a resin material and has 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 portion main body 58 is formed with a threaded hole 62 into which the feed screw shaft 22 screws, and a pair of through holes 64 formed on either side of the threaded hole 62 and through which the claw portions 38 pass. A reinforcing cover 66 made of, for example, a metal material or the like is attached to the outer surface of the nut portion main body 58.

[0049] The slide portion 60 slides relative to a guide wall 68 that is provided on the base portion 16 and extends along the axial direction of the plunger 20. That is, before use, the nut portion 24 is in a non-contact position where it does not contact the plunger 20 (see FIG. 5), and is moved from the non-contact position to a contact position where the nut portion 24 and plunger 20 are engaged by the rotation of the feed screw shaft 22. After contacting the plunger 20, further rotation of the feed screw shaft 22 causes the nut portion 24 to press the plunger 20 toward the tip end (see FIG. 6). Note that the guide wall 68 may be provided with a restricting portion that functions as a stopper to prevent the slide portion 60 from moving further backward.

[0050] As shown in FIGS. 4 to 6, the device main body 14 includes a cover that is detachably attached to the base 16 so as to close the opening of the base 16, as well as a control unit 71, a storage unit 72, and a communication unit 73. The cover may be provided on the top surface 121 of the housing 111. The control unit 71 is electrically connected to the battery 42, the motor 44, the storage unit 72, and the communication unit 73 via a bus 79 (see FIG. 7). The control unit 71 controls each unit of the medicinal liquid administration device 1 to perform processes related to the operation of the medicinal liquid administration device 1. For example, the control unit 71 controls the drive of the motor 44 based on information related to medicinal liquid administration transmitted from a remote control 90.

[0051] Fig. 7 is a block diagram showing an example of a configuration related to control of the medicinal solution administration device 1 of Fig. 1. As described above, the battery 42, the motor 44, the storage unit 72, and the communication unit 73 are electrically connected to the control unit 71 via the bus 79.

[0052] The control unit 71 is one or more processors. The control unit 71 is communicably connected to each component of the medicinal liquid administration device 1 and controls the operation of the entire medicinal liquid administration device 1. The processor is a general-purpose processor such as a CPU (Central Processing Unit), or a dedicated processor specialized for a specific process. 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).

[0053] 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, a random access memory (RAM) or a read-only memory (ROM). 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. Furthermore, the information stored in the storage unit 72 may be transmitted to the remote control 90 via the communication unit 73 under the control of the control unit 71.

[0054] 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 via Bluetooth (registered trademark), but this is not limiting, and communication may be via other wireless communication paths such as a wireless LAN (Local Area Network) or a wired cable, for example.

[0055] The control of the medicinal liquid administration device 1 may be performed by executing a program on a processor included in the control unit 71. That is, the control of the medicinal liquid administration device 1 may be realized by software. In this case, the program causes a computer to execute processing of steps included in the operation of the medicinal liquid administration device 1, thereby causing the computer to realize functions corresponding to the processing of those steps. Alternatively, some or all of the functions of the medicinal liquid administration device 1 may be realized by a dedicated circuit included in the control unit 71. That is, some or all of the functions of the medicinal liquid administration device 1 may be realized by hardware.

[0056] (Remote control configuration) Fig. 8 is a block diagram showing an example of the hardware configuration of the remote control 90 of Fig. 1. The remote control 90 includes a control unit 91, a storage unit 92, a communication unit 93, an input unit 94, an output unit 95, and a bus 99.

[0057] The control unit 91 is one or more processors. The control unit 91 is communicably connected to each component of the remote control 90 via a bus 99, and controls the operation of the entire remote control 90. The processor is a general-purpose processor such as a CPU or a GPU (Graphics Processing Unit), or a dedicated processor specialized for a specific process. 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.

[0058] 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 memories are, for example, RAM or ROM. The RAM is, for example, SRAM (Static RAM) or DRAM (Dynamic RAM). The ROM is, for example, EEPROM (Electrically Erasable Programmable ROM). The storage unit 92 functions, for example, as a main storage device, an auxiliary storage device, or a cache memory.

[0059] The communication unit 93 is a communication interface for communicating with the medicinal liquid administration device 1. The communication unit 93 communicates with the medicinal liquid administration device 1 to transmit information input by a user to the medicinal liquid administration device 1 and to receive information from the medicinal liquid administration device 1. The communication unit 93 communicates with the medicinal liquid administration device 1 by, for example, Bluetooth (registered trademark), but is not limited to this, and communication may also be performed by, for example, another wireless communication path such as a wireless LAN or a wired cable.

[0060] The input unit 94 includes one or more input interfaces that accept input operations by a user and acquire input information based on the user operations. The input unit 94 is, for example, a touch screen that is provided integrally with the display (display device) of the output unit 95, but is not limited thereto and may also be physical keys (for example, an external numeric keypad), capacitance keys, a pointing device, a microphone that accepts voice input, or the like.

[0061] The output unit 95 as a display unit includes one or more output interfaces that output information to the user and notify the user. For example, the output unit 95 is a display that outputs information by image display, 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 medicinal liquid administration device 1. In this embodiment, an example in which such an input / output unit is provided in the remote control 90 will be described, but it may also be provided in the medicinal liquid administration device 1 or another device.

[0062] The functions of the remote control 90 may be realized by executing a program according to this embodiment on a processor included in the control unit 91. That is, the functions of the remote control 90 may be realized by software. In this case, the program causes a computer to execute processing of steps included in the operation of the remote control 90, thereby causing the computer to realize functions corresponding to the processing of those steps. Alternatively, some or all of the functions of the remote control 90 may be realized by a dedicated circuit included in the control unit 91. That is, some or all of the functions of the remote control 90 may be realized by hardware.

[0063] (Operation of the drug administration device) When operating the medicinal solution administration device 1 according to this embodiment, the user first removes the cartridge 12 from the packaging container. In this state, the reservoir 18 of the cartridge 12 is not filled with medicinal solution, and the nut portion 24 is in a non-contact position where it does not contact the plunger 20 (see FIG. 5).

[0064] Next, the user adjusts the position of plunger 20 relative to reservoir 18, and fills a desired amount of medicinal liquid into reservoir 18 through introduction port 26 from a medicinal liquid container, such as a vial in which the medicinal liquid is sealed. Thereafter, the user connects device main body 14 to cartridge 12. This supplies power from battery 42 of cartridge 12 to the components of device main body 14, and output gear 48 of gear box 46 of device main body 14 meshes with spur gear 50 of cartridge 12. Control unit 71, memory unit 72, etc., start up upon receiving power from battery 42.

[0065] Next, the user fills the cartridge 12 removed from the packaging container with the medicinal liquid, connects the cartridge 12 to the device main body 14, and then primes the medicinal liquid administration device 1. Priming refers to an operation of engaging the nut portion 24 of the medicinal liquid administration device 1 with the plunger 20 and filling the flow path of the medicinal liquid administration device 1, including the outlet tube 29, with the medicinal liquid. 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 gearbox 46, the spur gear 50, and the transmission shaft 52, causing the feed screw shaft 22 to rotate and the nut portion 24 to slide along the guide wall 68 and advance toward the plunger 20.

[0066] As the nut portion 24 advances toward the distal end of the reservoir 18, the pair of claws 38 abut against the wall surfaces defining the through-hole 64 of the nut portion 24, causing the pair of extensions 36 to bend toward each other. Then, as the claws 38 pass through the through-hole 64, the extensions 36 return to their original state from their bent state, and the nut portion 24 engages with the rear end of the plunger 20. This enables the nut portion 24 to press the plunger 20 toward the distal end. Further advancing the nut portion 24 subsequently presses the medicinal liquid in the reservoir 18 against the plunger 20, filling the inner bore of the outlet tube 29 with the medicinal liquid, thereby completing priming. This priming is completed when the user visually confirms that the medicinal liquid has been discharged from the connecting needle tube, which is fluidly connected to the outlet tube 29 and exposed to the outside of the medicinal liquid administration device 1. When the user visually confirms that the medicinal liquid has been discharged from the connecting needle tube, the user instructs the medicinal liquid administration device 1 to stop priming. For example, the remote control 90 may display an image of a priming stop button on the display of the output unit 95, and notify the medicinal solution administration device 1 to stop the motor 44 in response to the user selecting the priming stop button.

[0067] Next, the user attaches the cradle device 11 to a predetermined position on the skin and uses the puncture mechanism to place the cannula of the connection port 106 inside the body, while engaging the connection port 106 with the cradle device 11. Next, the user attaches the pump body 10, to which the cartridge 12 and device body 14 are connected, to the cradle device 11, thereby connecting the outlet tube 29 to the cannula. In this state, the control unit 71 controls the rotation of the motor 44, thereby continuously or intermittently administering the medicinal liquid from the reservoir 18 into the body. The control unit 71 controls the rotation of the motor 44 according to a medicinal liquid administration schedule instructed via the remote control 90, and administers the medicinal liquid at various rates, such as a basal rate or a bolus, depending on the patient's condition. The basal rate is the amount of medicinal liquid per unit time that corresponds to the basal secretion of insulin. The bolus is the amount of medicinal liquid that corresponds to the additional secretion of insulin in response to a meal or an increase in blood glucose level.

[0068] The reservoir 18 of the cartridge 12 is filled with an amount of medicinal liquid to be administered in an administration cycle of a certain number of days. After the medicinal liquid filled in the reservoir 18 is administered into the living body over, 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 medicinal liquid, the cartridge 12 is connected to the device main body 14, and a priming operation is performed. After these operations, while the medicinal liquid is being administered, the medicinal liquid administration device 1 can estimate the amount of medicinal liquid to be administered based on, for example, the number of rotations of the motor 44 performed during priming and liquid delivery. The medicinal liquid administration device 1 according to this embodiment includes a disposable cartridge 12 and a reusable device main body 14, thereby reducing running costs.

[0069] The amount of medicinal solution filled into reservoir 18 of cartridge 12 varies depending on the patient's age, condition, etc., even if the length of the administration cycle is the same. For example, if reservoir 18 is filled with a three-day amount of medicinal solution, cartridge 12 for adults will be filled with more medicinal solution than cartridge 12 for children.

[0070] As described above, after filling the cartridge 12 with medicinal liquid, the user connects the cartridge 12 to the device main body 14 and primes the medicinal liquid administration device 1. However, when filling the cartridge 12 with medicinal liquid, air bubbles may be mixed into the reservoir 18. If the medicinal liquid administration device 1 administers the medicinal liquid into a living body while air bubbles are mixed in, the planned amount of medicinal liquid may not be injected into the patient, and the patient may suffer from hyperglycemia, etc. Therefore, if air bubbles are mixed in, the user may perform an operation to remove the air bubbles from the reservoir 18 after filling the cartridge 12 with medicinal liquid and before connecting the cartridge 12 to the device main body 14. Note that by configuring the reservoir 18 as a transparent container, the user can visually confirm that air bubbles have been mixed in.

[0071] To remove air bubbles, the user holds cartridge 12 with the tip of reservoir 18 facing vertically upward and lightly taps reservoir 18 with a finger to collect air bubbles at the tip of reservoir 18. Then, the user places a coin such as a 100 yen coin in the groove at the bottom of plunger 32 and pushes plunger 32 up to expel the air bubbles until the liquid medicine comes out of the connecting needle tube on the back of cartridge 12. This removes the air bubbles from reservoir 18 and fills the area from reservoir 18 to outlet tube 29 with the liquid medicine.

[0072] If the user performs this air bubble removal and then connects cartridge 12 to device main body 14 to perform priming, only a short time is required from the user issuing a priming command until the medicinal liquid is discharged from the connecting needle because the medicinal liquid is already filled from reservoir 18 to outlet tube 29. On the other hand, if the user performs priming without removing air bubbles, time is required to fill outlet tube 29 with medicinal liquid, which means that a period of time is required from the start of priming until the medicinal liquid is confirmed to be discharged. As described above, when the user visually confirms that medicinal liquid has been discharged from the connecting needle, the user instructs medicinal liquid administration device 1 to stop priming. Therefore, if the user has not performed an air bubble removal operation, the user will be unable to take their eyes off the connecting needle for a certain period of time. As such, in conventional medicinal liquid administration devices, if the user has not performed an air bubble removal operation, it may take a long time from the user issuing a priming command until the medicinal liquid is discharged from the connecting needle, leaving room for improvement in terms of the user's waiting time.

[0073] Before starting priming, the medicinal solution administration device 1 of this embodiment prompts the user to select whether or not air bubbles were removed after the medicinal solution was filled. If air bubbles were not removed, the medicinal solution administration device 1 rotates the motor 44 the number of rotations required to fill the medicinal solution from the reservoir 18 to the outlet tube 29, thereby advancing the nut portion 24. This pushes the plunger 20 toward the distal end of the reservoir 18, causing the medicinal solution in the reservoir 18 to flow into the outlet tube 29. The medicinal solution administration device 1 then displays an image of a button or the like on a display or the like of the output unit 95 to notify the user to continue selecting the image of the button or the like until the medicinal solution is discharged from the connecting needle tube. The medicinal solution administration device 1 advances the nut portion 24 to push the plunger 20 toward the distal end of the reservoir 18 only while the image of the button or the like is selected. After the user selects the image of the button or the like and confirms that the medicinal solution has been discharged from the connecting needle tube, the user stops selecting the image of the button or the like and ends priming. In this way, the drug solution administration device 1 of this embodiment automatically operates to fill the outlet tube 29 with drug solution even if air bubbles have not been removed, thereby making it possible to shorten the user's waiting time during the priming operation.

[0074] 9A and 9B are flowcharts showing the operation procedure of the medicinal liquid administration device 1 of FIG. 1. The operation of the medicinal liquid administration device 1 described with reference to FIGS. 9A and 9B may correspond to one method of controlling the medicinal liquid administration device 1. The operation of each step in FIGS. 9A and 9B may be performed based on the control of the control unit 71 of the medicinal liquid administration device 1. The following processing is performed after the user fills the cartridge 12 with medicinal liquid, performs processing to remove air bubbles as necessary, and then connects the cartridge 12 to the device main body 14.

[0075] In step S1 of FIG. 9A, the control unit 71 determines whether or not the user has removed air bubbles.

[0076] Specifically, for example, the control unit 71 may display a screen on the display of the output unit 95 of the remote control 90 that allows the user to select whether or not air bubble removal has been performed, and determine whether or not air bubble removal has been performed based on the user's selection via the input unit 94. Alternatively, if the medicinal solution administration device 1 is equipped with an output unit such as a display and an input unit such as a touch screen, the control unit 71 may display a screen on the display of the output unit of the medicinal solution administration device 1 that allows the user to select whether or not air bubble removal has been performed, and determine whether or not air bubble removal has been performed based on the user's selection via the input unit. Alternatively, if the medicinal solution administration device 1 is equipped with a detector that can detect whether or not air bubble removal has been performed, the determination may be made based on the detection result of the detector. For example, the medicinal solution administration device 1 may be equipped with a detector that can determine whether or not the outlet tube 29 is filled with medicinal solution, and determine whether or not the user has performed air bubble removal based on the detection result of the detector. If air bubble removal has been performed (YES in step S1), the control unit 71 proceeds to step S2. If not (NO in step S1), the control unit 71 proceeds to step S5. In step S1, the control unit 91 may determine, based on a selection made by the user via the input unit 94, whether or not the user has removed bubbles.

[0077] In step S2, the control unit 71 determines whether or not the user has instructed to start priming.

[0078] Specifically, for example, the control unit 71 may display an image for instructing the start of priming on the display of the output unit 95 of the remote control 90, and receive the instruction to start priming when the user selects the image via the input unit 94. Alternatively, if the medicinal solution administration device 1 is equipped with an output unit and an input unit, the control unit 71 may receive the instruction to start priming by displaying selectable images for instructing the start of priming on the display of the output unit of the medicinal solution administration device 1. If the instruction to start priming is received (YES in step S2), the control unit 71 proceeds to step S3; otherwise (NO in step S2), the control unit 71 continues the processing of step S2 until the instruction to start priming is received. Note that in step S2, the control unit 91 may determine whether the user has selected an image via the input unit 94 to instruct the start of priming.

[0079] In step S3, the control unit 71 rotates the motor 44 at a first rotational speed, causing the nut portion 24 to advance toward the distal end side of the reservoir 18. The first rotational speed may be a rotational speed that is sufficiently faster than the rotational speed of the motor 44 during administration of the medicinal solution, and may be, for example, the maximum rotational speed at which the motor 44 can operate. As a result, the nut portion 24 moves toward the distal end side of the reservoir 18 at the first speed. Note that in step S3, the control unit 91 may instruct the control unit 71 to rotate the motor 44 at the first rotational speed.

[0080] In step S4, the control unit 71 determines whether or not it has detected that the plunger 20 and the nut portion 24 are connected to each other.

[0081] The control unit 71 may detect the connection between the plunger 20 and the nut portion 24 using any method. For example, the medical solution administration device 1 may include a detector with a mechanical movable contact, such as the plunger grip detector described in Patent Document 1, a magnetic proximity switch, or a load sensor, and the control unit 71 may detect the connection between the plunger 20 and the nut portion 24 using such a detector. Alternatively, the control unit 71 may detect the connection between the plunger 20 and the nut portion 24 based on a change in the rotational speed of the motor 44. That is, once the nut portion 24 is engaged with the rear end of the plunger 20, the medical solution stored in the reservoir 18 must be pushed out through the outlet tube 29 in order for the nut portion 24 to move further toward the tip of the reservoir 18. Therefore, when the nut portion 24 and the plunger 20 are connected, a greater load is applied to the rotation of the motor 44 to move the nut portion 24 further forward than before the connection. Therefore, if the motor 44 rotates with the same torque, the rotational speed of the motor 44 after the connection is slower than before the connection. Therefore, the control unit 71 may detect the coupling between the plunger 20 and the nut portion 24 based on a decrease in the rotational speed equal to or greater than a predetermined threshold. If the control unit 71 detects the coupling (YES in step S4), the control unit 71 proceeds to step S9, and if not (NO in step S4), the control unit 71 continues the processing of step S4 while rotating the motor 44 until the coupling is detected. Note that, if the control unit 71 detects that the plunger 20 and the nut portion 24 have coupled together in step S4, the control unit 71 may notify the control unit 91 of this.

[0082] In step S5, the control unit 71 determines whether or not the user has instructed to start priming, similar to step S2. If the user has instructed to start priming (YES in step S5), the control unit 71 proceeds to step S6, and if not (NO in step S5), the control unit 71 continues the processing of step S5 until the user has instructed to start priming. Note that in step S5, the control unit 91 may determine whether or not the user has instructed to start priming by a selection made by the user via the input unit 94.

[0083] In step S6, similarly to step S3, the control unit 71 rotates the motor 44 at the first rotational speed to move the nut portion 24 forward toward the tip side of the reservoir 18. As a result, the nut portion 24 moves toward the tip side of the reservoir 18 at the first speed. Note that in step S6, the control unit 91 may instruct the control unit 71 to rotate the motor 44 at the first rotational speed.

[0084] In step S7, similarly to step S4, the control unit 71 determines whether or not it has detected that the plunger 20 and the nut portion 24 have been coupled. If the control unit 71 detects that the plunger 20 and the nut portion 24 have been coupled (YES in step S7), the control unit 71 proceeds to step S8, and if not (NO in step S7), the control unit 71 continues the processing of step S7 while rotating the motor 44 until it detects that the plunger 20 and the nut portion 24 have been coupled. Note that, in step S7, if the control unit 71 detects that the plunger 20 and the nut portion 24 have been coupled, it may notify the control unit 91 to that effect.

[0085] In step S8, the control unit 71 rotates the motor 44 a number of rotations corresponding to filling the outlet tube 29, which is a liquid supply tube, with the medicinal liquid. The number of rotations of the motor 44 corresponding to filling the outlet tube 29 with the medicinal liquid is stored in advance in the memory unit 72 of the medicinal liquid administration device 1. The control unit 71 rotates the motor 44 a number of rotations stored in the memory unit 72. As a result, the nut portion 24 moves a predetermined distance toward the tip side of the reservoir 18. The control unit 71 then proceeds to step S9. Note that in step S8, the control unit 91 may instruct the control unit 71 to rotate the motor 44 a number of rotations corresponding to filling the outlet tube 29, which is a liquid supply tube, with the medicinal liquid. The number of rotations of the motor 44 corresponding to filling the outlet tube 29 with the medicinal liquid may also be stored in advance in the memory unit 92 of the remote control 90.

[0086] In step S9, the control unit 71 stops the rotation of the motor 44. Note that in step S9, the control unit 91 may instruct the control unit 71 to stop the rotation of the motor 44.

[0087] In step S10 of FIG. 9B , the control unit 71 displays selectable images of buttons or the like on a display or the like of the output unit 95, and notifies the user to continue selecting the images of buttons or the like until the medicinal liquid is discharged from the connecting needle tube. If the medicinal liquid administration device 1 includes an output unit and an input unit, the control unit 71 may display selectable images of buttons or the like on a display of the output unit of the medicinal liquid administration device 1, and notify the user to continue selecting the images of buttons or the like until the medicinal liquid is discharged from the connecting needle tube. If the remote control 90 or the medicinal liquid administration device 1 includes an operation unit such as a mechanical button, the control unit 71 may notify the user to continue selecting the operation unit until the medicinal liquid is discharged from the connecting needle tube. In this way, the control unit 71 receives an instruction to advance the nut portion 24 from the user via the input / output unit. In step S10, the control unit 91 may display selectable images of buttons or the like on a display or the like of the output unit 95, and notify the user to continue selecting the images of buttons or the like until the medicinal liquid is discharged from the connecting needle tube.

[0088] In step S11, the control unit 71 determines whether or not an image such as a button or an operation unit has been selected by the user. If selected (YES in step S11), the control unit 71 proceeds to step S12, and if not (NO in step S11), the control unit 71 continues the processing of step S11 until an image such as a button or an operation unit is selected. Note that in step S11, the control unit 91 may determine whether or not an image such as a button or an operation unit has been selected by the user.

[0089] In step S12, the control unit 71 rotates the motor 44 at a second rotational speed to advance the nut portion 24 toward the distal end of the reservoir 18. This causes the nut portion 24 to move toward the distal end of the reservoir 18 at the second speed. The second rotational speed may be slower than the first rotational speed. That is, the first speed may be faster than the second speed. For example, the user continues to press a button or the like until the medicinal liquid is discharged from the connecting needle tube. The second rotational speed may be set to a speed that prevents a large amount of medicinal liquid from leaking when the user stops pressing a button or the like after visually confirming that the medicinal liquid has been discharged from the connecting needle tube. However, the second rotational speed may be set to a speed that shortens the time from when the user starts pressing a button or the like to when the medicinal liquid is discharged from the connecting needle tube. In this way, by setting the first rotational speed faster than the second rotational speed, the time until the nut portion 24 and the plunger 20 are coupled can be shortened. Furthermore, it is possible to prevent a large amount of medicinal liquid from leaking out even if the user performs an operation to stop the forward movement of nut portion 24 after visually confirming that the medicinal liquid has been discharged from the connecting needle tube. Note that in step S12, control unit 91 may instruct control unit 71 to rotate motor 44 at the second rotation speed.

[0090] In step S13, the control unit 71 determines whether or not an image or operation unit such as a button has been selected by the user. If selected (YES in step S13), the control unit 71 continues the processing of step S13 while continuing the rotation of the motor 44, and if not (NO in step S13), the control unit 71 proceeds to step S14. Note that in step S13, the control unit 71 may determine whether or not an image or operation unit such as a button has been selected by the user.

[0091] In step S14, the control unit 71 stops the rotation of the motor 44. Then, the control unit 71 ends the processing of the flowchart. This causes the medicinal solution administration device 1 to end the priming operation. Note that in step S14, the control unit 91 may instruct the control unit 71 to stop the rotation of the motor 44.

[0092] As described above, the drug solution administration device 1, which administers 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 portion 24, the drive portion 40, and the control portion 71. The reservoir 18 is filled with drug solution. The outlet tube 29 is connected to the reservoir 18 and discharges the drug solution to the outside of the reservoir 18. The plunger 20 is provided in the reservoir 18 and is movable in the longitudinal direction of the reservoir 18. The nut portion 24 can press the plunger 20 toward the tip side of the reservoir 18 by moving within its movable range. The drive portion 40 moves the nut portion 24 within its movable range. The control portion 71 determines whether or not the user has previously performed an operation to fill the outlet tube 29 with drug solution. Furthermore, when it is determined that no operation has been performed to fill the outlet tube 29 with the medicinal solution, the control unit 71 controls the drive unit 40 to move the nut portion 24 a predetermined distance toward the tip side of the reservoir 18. Furthermore, the control unit 71 controls the drive unit 40 to move the nut portion 24 toward the tip side of the reservoir 18 only while the user is instructing the nut portion 24 to move forward.

[0093] In this way, the medicinal solution administration device 1 determines whether or not an operation to fill the outlet tube 29 with the medicinal solution, such as removing air bubbles, has been performed in advance by the user, and if such an operation has not been performed, the medicinal solution administration device 1 automatically moves the nut portion 24 a predetermined distance toward the tip side of the reservoir 18. Then, the medicinal solution administration device 1 moves the nut portion 24 toward the tip side of the reservoir 18 only while instructions are being given by the user to complete priming. Therefore, even if air bubbles have not been removed, the medicinal solution administration device 1 automatically performs an operation to fill the outlet tube 29 with the medicinal solution, thereby making it possible to shorten the user's waiting time during the priming operation.

[0094] Furthermore, the nut portion 24 may be configured to be connectable to the plunger 20 by being pressed against the plunger 20. In response to a command from the user to start priming, the control unit 71 may control the drive unit 40 so that the nut portion 24 moves toward the tip side of the reservoir 18 until it is connected to the plunger 20. Therefore, the medicinal solution administration device 1 can automatically connect the plunger 20 and the nut portion 24 to perform priming.

[0095] Furthermore, in response to a user's instruction to start priming, control unit 71 may control drive unit 40 to move nut portion 24 toward the distal end of reservoir 18 at a first speed until nut portion 24 is coupled to plunger 20. When control unit 71 determines that no operation has been performed to fill outlet tube 29 with the medicinal solution, control unit 71 may control drive unit 40 to move nut portion 24 toward the distal end of reservoir 18 at a second speed. Here, the first speed may be faster than the second speed. This reduces the time required for nut portion 24 and plunger 20 to couple. Furthermore, even if the user performs an operation to stop the forward movement of nut portion 24 after visually confirming that the medicinal solution has been discharged from the connecting needle tube, it is possible to prevent a large amount of medicinal solution from leaking out.

[0096] Furthermore, the control unit 71 may detect that the nut portion 24 is connected to the plunger 20 based on the moving speed of the nut portion 24. Therefore, the medicinal solution administration device 1 can detect the connection between the nut portion 24 and the plunger 20 without providing a special sensor or the like.

[0097] Furthermore, the control unit 71 may receive, via the input / output unit, a selection of whether or not an operation has been performed to fill the outlet tube 29 with the medicinal solution. When the user selects that an operation to fill the outlet tube 29 with the medicinal solution has not been performed, the control unit 71 may determine that an operation to fill the outlet tube 29 with the medicinal solution has not been performed. In this way, the medicinal solution administration device 1 determines whether or not an operation to fill the outlet tube 29 with the medicinal solution has been performed based on the user's selection, and therefore the medicinal solution administration device 1 can determine whether or not the outlet tube 29 is filled with the medicinal solution without providing a special sensor or the like.

[0098] Furthermore, the control unit 71 may receive an instruction to advance the nut portion 24 from the user via the input / output unit. This allows the user to give an instruction to advance the nut portion 24 via the input / output unit.

[0099] The present disclosure is not limited to the above-described embodiments. For example, multiple blocks shown in the block diagrams may be integrated, or one block may be divided. Multiple steps shown in the flowcharts may be executed in parallel or in a different order depending on the processing capabilities of the device executing each step, or as needed, instead of being executed in chronological order as described. Other modifications are possible without departing from the spirit of the present disclosure. [Explanation of symbols]

[0100] 1. Chemical solution administration device 10 Pump body 11 Cradle device 12 cartridges 14 Device body 16 Base 18 Reservoir 20 Plunger 22 Feed screw shaft 24 Nut part 26 Introduction Port 28 Derivation port 29 Outlet pipe 30 Plunger body 32 Pusher 34 Sealing material 36 Extension 38 Claw 39 Bearings 40 Drive unit 42 Batteries 44 Motor 46 Gearbox 48 Output gear 50 Spur gear 52 Transmission shaft 54 terminals 56 Bearings 58 Nut body 60 Slide section 62 screw holes 64 through holes 66 Reinforcement cover 68 Guide Wall 70 Lid 71 Control Unit 72 Memory section 73 Communications Department 79 Bus 106 connection ports 111 Cabinet 121 Top part 123 Front 124 Back part 126 Side part 137 Guide groove 138 Engagement hook part 141 Placement surface section 143 Side wall 144 Side wall 151 Guide rail 152 Detection rail 153 Sliding Rail 154 Fitting hole 155 Mounting part 156 Posture Correction Department 158 Notch 162 Engagement receiving portion 181 Port body 182 Cap 90 Remote Control 91 Control Unit 92 Memory section 93 Communications Department 94 Input section 95 Output section 99 Bus 100 Chemical liquid administration system

Claims

1. A drug solution administration device that administers a drug solution filled in a reservoir into a living body by pressing a plunger, the reservoir filled with the drug solution; a flow path connected to the reservoir and configured to lead the drug solution out of the reservoir; The plunger is provided in the reservoir and is movable in the longitudinal direction of the reservoir; a movable portion that can press the plunger toward the distal end of the reservoir by moving within a movable region; a drive unit that moves the movable unit within the movable region; A control unit; Equipped with The control unit determining whether or not an operation for filling the flow path with the chemical solution has been performed in advance by a user; when it is determined that an operation for filling the flow path with the drug solution has not been performed, controlling the drive unit so that the movable unit moves toward the tip side of the reservoir by a predetermined movement distance; controlling the drive unit so that the movable unit moves toward the tip end side of the reservoir only while a command to move the movable unit forward is being given by a user; Drug administration device.

2. the movable portion is capable of being coupled to the plunger by being pressed against the plunger, the control unit controls the drive unit in response to a command from the user to start priming so that the movable unit moves toward the distal end side of the reservoir until the movable unit is connected to the plunger. The drug solution administration device according to claim 1 .

3. The control unit In response to a command from the user to start priming, the movable part moves toward the distal end side of the reservoir at a first speed until it is connected to the plunger; When it is determined that an operation for filling the flow path with the drug solution has not been performed, the movable part moves toward the tip side of the reservoir at a second speed. The drive unit is controlled so that The drug solution administration device according to claim 2 , wherein the first speed is faster than the second speed.

4. The drug solution administration device according to claim 2 or 3, wherein the control unit detects that the movable part is coupled to the plunger based on a moving speed of the movable part.

5. The control unit receiving, via an input / output unit, a selection as to whether or not an operation for filling the flow path with the chemical solution has been performed; When the user selects that an operation for filling the flow path with the chemical solution has not been performed, it is determined that an operation for filling the flow path with the chemical solution has not been performed. The drug solution administration device according to any one of claims 1 to 4.

6. The drug solution administration device according to claim 1 , wherein the control unit receives an instruction to move the movable unit forward from the user via an input / output unit.

7. The drug solution administration device according to any one of claims 1 to 6, a remote controller for a user to operate the drug solution administration device; A drug solution administration system comprising:

8. a reservoir filled with a drug solution; a flow path connected to the reservoir and configured to lead the drug solution out of the reservoir; a plunger disposed within the reservoir and movable in a longitudinal direction of the reservoir; a movable portion that can press the plunger toward the distal end of the reservoir by moving within a movable region; a drive unit that moves the movable unit within the movable region; A control unit; Equipped with A control method for 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, comprising: The control unit determining whether or not an operation for filling the flow path with the chemical solution has been performed in advance by a user; a step of controlling the drive unit so that the movable unit moves toward the tip end side of the reservoir by a predetermined movement distance when it is determined that an operation for filling the flow path with the drug solution has not been performed; controlling the drive unit so that the movable unit moves toward the tip end of the reservoir only while a command to move the movable unit forward is being given by a user; A method for controlling a drug solution administration device, comprising:

Images