Liquid medicine administration device, control method thereof and medical solution administration system, and program

Abstract

To further reliably protect a connector part for charging a liquid medicine administration device.SOLUTION: A liquid medicine administration device (1) includes a pump for delivering a liquid medicine filled in a reservoir (18), a rechargeable battery (42) for supplying power to the pump, a connector part (75) to which a charging device for charging the rechargeable battery (42) can be connected, a cap (751) for protecting the connector part (75), a detection unit (78) for detecting opening / closing of the cap (751), and a control unit (71), where the control unit (71) notifies a user of an alert when it is detected that the cap (751) is open for a predetermined time without the charging device being connected to the connector part (75).SELECTED DRAWING: Figure 10

Description

[Technical Field]

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

[0002] There is known a drug solution administration device that administers a drug solution such as insulin into the body of a patient. Patent Document 1 describes that a battery is provided in the disposable part and / or the reusable part and used as a power source. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-039846 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional drug solution administration devices have room for improvement in terms of protecting the connector portion that connects the charging terminal.

[0005] An object of the present disclosure is to more reliably protect a connector portion for charging a medical solution administration device. [Means for solving the problem]

[0006] According to the present disclosure, a drug solution administration device includes: (1) a pump that delivers a medicinal solution filled in a reservoir; a rechargeable battery that supplies power to the pump; a connector portion to which a charging device for charging the rechargeable battery can be connected; a cap for protecting the connector portion; a detection unit that detects whether the cap is open or closed; A control unit; Equipped with When it is detected that the charging device is not connected to the connector portion and the cap is open for a predetermined time, the control portion notifies an alert to a user. It is a drug solution administration device.

[0007] (2) In the drug solution administration device of (1), the pump, the rechargeable battery, the connector, the cap, the detection unit, and the control unit are provided in a pump body, The pump device further includes an attachment part that can be attached to the skin of a patient, and a determination part that determines whether the pump body is attached to a cradle device to which the pump body can be attached; The control unit may control the issuance of the alert depending on whether it is determined that the pump body is attached to the cradle device.

[0008] (3) In the drug solution administration device of (2), When the control unit determines that the pump body is attached to the cradle device, and detects that the charging device is not connected to the connector portion and the cap is open for the predetermined period of time, the control unit may cause the alert to be issued from an output unit provided in a remote control for operating the medicinal solution administration device.

[0009] (4) In the drug solution administration device of (2) or (3), further comprising a notification unit for notifying a user of information; If the control unit does not determine that the pump body is attached to the cradle device, and detects that the charging device is not connected to the connector unit and the cap is open for the predetermined period of time, the control unit may cause the alarm unit provided in the medicinal solution administration device to issue the alert.

[0010] (5) In any one of the drug solution administration devices (2) to (4), The control unit If it is determined that the pump body is not attached to the cradle device, and if it is detected that the charging device is not connected to the connector portion and the cap is open for a first time, the alert is issued; If it is determined that the pump body is attached to the cradle device, and it is detected that the charging device is not connected to the connector portion and the cap is open for a second time period that is longer than the first time period, the alert may be issued.

[0011] (6) In any one of the drug solution administration devices (2) to (5), When it is determined that the pump body is attached to the cradle device and the charging device is connected to the connector portion, the control unit may notify the user that connection of the charging device is prohibited.

[0012] (7) In any one of the drug solution administration devices (2) to (6), The pump body includes: a plunger disposed within the reservoir and movable in a longitudinal direction of the reservoir; a movable portion that can move within a movable region to engage with the plunger and press the plunger toward the distal end of the reservoir; a drive unit that moves the movable unit within the movable region; may also be provided.

[0013] (8) In any one of the drug solution administration devices (2) to (7), The pump may further include a cradle device to which the pump body can be attached.

[0014] According to the present disclosure, a medical solution administration system includes: (9) A drug solution administration device according to any one of (1) to (8), a remote controller for operating the drug solution administration device; Equipped with.

[0015] According to the present disclosure, a method for controlling a drug solution administration device includes: (10) A method for controlling a drug solution administration device, comprising: The drug solution administration device is a pump for transferring the medicinal solution filled in the reservoir; a rechargeable battery that supplies power to drive the pump; a connector portion to which a charging device for charging the rechargeable battery can be connected; a cap for protecting the connector portion; a detection unit that detects whether the cap is open or closed; A control unit; Equipped with The control unit may issue an alert to a user when it detects that the charging device is not connected to the connector unit and the cap is open for a predetermined period of time.

[0016] According to the present disclosure, the program comprises: (11) A program for controlling a drug solution administration device, The drug solution administration device is a pump for transferring the medicinal solution filled in the reservoir; a rechargeable battery that supplies power to drive the pump; a connector portion to which a charging device for charging the rechargeable battery can be connected; a cap for protecting the connector portion; a detection unit that detects whether the cap is open or closed; A control unit; Equipped with When it is detected that the charging device is not connected to the connector portion and the cap is open for a predetermined time, the control portion executes a procedure for notifying an alert to a user. [Effects of the Invention]

[0017] According to an embodiment of the present disclosure, the connector portion for charging the medical solution administration device can be more reliably protected. [Brief explanation of the drawings]

[0018] [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 showing an example of the drug solution administration device of FIG. 1. [Figure 3] FIG. 2 is a perspective view showing an example of a drug solution administration device in a separated state. [Figure 4] FIG. 4 is a perspective view showing an example of the pump body of FIG. 3. [Figure 5] FIG. 2 is a perspective view showing an example of a pump body in an exploded state. [Figure 6] 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 7] FIG. 10 is a diagram showing an example of a cartridge with a nut portion in a predetermined position. [Figure 8] 3A and 3B are schematic diagrams illustrating an example of the configuration of a connector portion. [Figure 9] 3A and 3B are schematic diagrams showing examples of the configuration of a connector portion. [Figure 10] 2 is a block diagram showing an example of a configuration related to control of the drug solution administration device of FIG. 1. FIG. [Figure 11] 2 is a block diagram showing an example of a hardware configuration of the remote control of FIG. 1. [Figure 12] 2 is a flowchart showing an example of the operation of the drug solution administration device of FIG. 1. [Figure 13] 2 is a flowchart showing an example of the operation of the drug solution administration device of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0019] 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.

[0020] (Configuration of drug solution administration system 100) 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.

[0021] As will be described later with reference to FIG. 5 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.

[0022] The remote control 90 is a device that allows a user, such as a patient, to operate the medicinal solution administration device 1. The remote control 90 notifies the user of information received from the medicinal solution administration device 1 and accepts user operations on the medicinal solution administration device 1. In this embodiment, the remote control 90 is implemented by a dedicated device compatible with the medicinal solution administration device 1, but it may also be implemented 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. However, instead, all or part of the user interface functions may be provided in the medicinal solution administration device 1. In this embodiment, the user who uses the medicinal solution administration system 100 is the patient himself / herself. However, the user may also be a person other than the patient, including the patient's family members and medical professionals such as doctors and nurses.

[0023] 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.

[0024] (Configuration of drug solution administration device 1) 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 cannula 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. Fig. 4 is a perspective view showing an example of the pump body 10 of Fig. 3.

[0025] 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 FIGS. 2 and 3, the housing 111 may be formed in a flat, approximately rectangular parallelepiped shape with rounded corners. The top 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 top 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 top surface 121 in a first direction. A first side surface 125 and a second side surface 126 that face each other are connected substantially vertically to an end of the top surface 121 in a second direction.

[0026] As shown in FIGS. 2 and 3, pump body 10 has connector 75 and notification unit 77 on top surface 121. Connector 75 is a connector to which a charging device can be connected. The charging device is any device for charging rechargeable battery 42 (see FIG. 6). The charging device is, for example, charging cable 251 connected to an external power source, but may also be any connection terminal provided on the external power source. The following description will focus on an example in which charging cable 251 (see FIG. 9) connected to an external power source is used as the charging device.

[0027] When the charging cable 251 is connected to the connector 75, the pump body 10 receives power from a power source via the charging cable 251 and charges the rechargeable battery 42 (see FIG. 6 ) provided in the device body 14. The connector 75 is, for example, a connector conforming to a general-purpose standard such as USB (Universal Serial Bus), but may be implemented using other methods that can receive power. In FIGS. 2 and 3 , the connector 75 is provided on the top surface 121, but it may be provided at any position on the pump body 10 (e.g., on the side of the pump body 10, etc.). The connector 75 includes a cap 751 (see FIGS. 8 and 9 ) to prevent dust and other contaminants from entering while the charging cable 251 is not connected. As described below, the medicinal solution administration device 1 according to this embodiment includes a detection unit 78 that detects whether the cap 751 is open or closed, and issues an alert when it detects that the cap 751 has been open for a predetermined period of time without a charging device being connected to the connector 75. Therefore, according to the medicinal solution administration device 1, it is possible to prevent the cap 751 from being left open, and more reliably protect the connector part 75. The details of the cap 751 will be described later.

[0028] Notification unit 77 notifies the user of information. In the present embodiment, notification unit 77 is, for example, an LED (Light Emitting Diode) lamp. However, notification unit 77 may also be a speaker that outputs sound, a display (e.g., a liquid crystal display) that outputs images, a vibrator, or a combination of these. Notification unit 77 may include an LED lamp that displays a graphic that prompts the user to perform an action. For example, notification unit 77 may include an LED lamp that displays a graphic that prompts the user to attach cap 751 to connector unit 75 and to remove charging cable 251 from connector unit 75. In FIGS. 2 and 3 , notification unit 77 is provided on top surface 121, but it may also be provided at any position on pump body 10 (e.g., on the side of pump body 10, etc.).

[0029] As shown in FIGS. 3 and 4 , the pump body 10 may have an engagement structure at the first side surface portion 125 and the second side surface portion 126 that allows the pump body 10 and the cradle device 11 to be repeatedly detachably attached to and detached from each other. The engagement structure may include, for example, a hook mechanism. Specifically, the first side surface portion 125 may have a first guide groove portion 135 and a first engagement hook portion 136 formed therein. The second side surface portion 126 may have a second guide groove portion 137 and a second engagement hook portion 138 formed therein. The first engagement hook portion 136 may be formed closer to the rear surface portion 124 than the first guide groove portion 135. The second engagement hook portion 138 may be formed closer to the rear surface portion 124 than the second guide groove portion 137. The first engagement hook portion 136 and the second engagement hook portion 138 may be detachably engaged with a pair of engagement receiving portions 162 of the cradle device 11, which will be described later.

[0030] 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, bottom surface 122 (see Figure 4) of housing 111 of pump body 10 is placed on mounting surface 141.

[0031] 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 cannula port 106 may be mounted on the mounting portion 155. The mounting portion 155 may be provided with an insertion hole through which the cannula of the cannula port 106 is inserted.

[0032] 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 the detection groove 134 provided in the pump main body 10 and presses the attachment detection switch 133. The pump main body 10 detects the attachment of the cradle device 11 based on the pressing of the attachment detection switch 133. In other words, the attachment detection switch 133 functions as a determination unit that determines whether the pump main body 10 is attached to the cradle device 11.

[0033] 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, the sliding groove 132 provided on the bottom surface 122 of the pump body 10 is slidably fitted into the sliding rail 153.

[0034] A side wall 144 extends substantially perpendicularly from the end of the mounting surface 141 in the first direction. Opposing side walls 143 extend substantially perpendicularly 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 first side surface 125 and the second 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.

[0035] As shown in Fig. 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, fitting protrusion 131 (see Fig. 4) provided on front surface portion 123 of pump body 10 may fit into fitting hole 154.

[0036] Guide rails 151, posture correction portions 156, and engagement receiving portions 162 may be formed on side wall portion 143. Engagement receiving portions 162 may be openings formed by cutting out side wall portion 143 in a substantially rectangular shape. Engagement receiving portions 162 may be provided on side wall portion 143 facing each other in accordance with the arrangement of first engagement hook portion 136 and second engagement hook portion 138. When pump body 10 is attached to cradle device 11, first engagement hook portion 136 and second engagement hook portion 138 may detachably engage with engagement receiving portions 162.

[0037] As shown in FIG. 3, guide rail 151 is a protrusion formed on side wall portion 143. Guide rail 151 does not necessarily have to have a continuous protrusion. For example, as shown in FIG. 3, notches 158 may be appropriately provided midway along guide rail 151. Guide rail 151 may also be provided on each of the opposing side wall portions 143. When pump body 10 is attached to cradle device 11, guide rail 151 engages with first guide groove portion 135 provided on first side surface portion 125 and second guide groove portion 137 provided on second side surface portion 126 of pump body 10. This guides the attachment direction of pump body 10.

[0038] 2 and 3, posture correcting portion 156 is a plate-shaped protrusion extending upward from side wall portion 143. Posture correcting portion 156 may have a curved shape corresponding to the shape of the connection portion (corner) between top surface portion 121 of housing 111 of pump body 10 and first side surface portion 125 and second side surface portion 126.

[0039] The cradle device 11 may be provided with an adhesive sheet as an adhesive part that can 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 part 141 of the cradle device 11. The adhesive sheet may be formed with an opening through which a cannula of the cannula port 106 described below passes. The adhesive sheet may be made of a flexible material. The adhesive sheet may form an adhesive layer that can be attached to the patient's skin on the surface opposite to the mounting surface part 141. Before being attached to the patient's skin, the adhesive layer of the adhesive sheet may be covered with release paper.

[0040] The cannula 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 cannula port 106 from the external environment.

[0041] When the cannula port 106 is attached to the attachment portion 155 of the cradle device 11 using a puncture mechanism (not shown), the cannula penetrates the mounting surface 141 together with the puncture needle and protrudes to the other surface of the mounting surface 141 (the surface that is attached to the skin).The cannula is then inserted into the living body together with the puncture needle.The puncture needle is then removed, leaving the cannula in the living body.

[0042] The connecting portion of the port body 181 may face upstream in the mounting direction. The connecting needle tube 112 (see FIG. 4) exposed to the outside of the pump body 10 is fluidly connected to the outlet tube 29. The connecting needle tube 112 punctures the septum surface of the cap 182 and enters the bore. This connects the port body 181 to the outlet tube 29 (see FIG. 6, etc.) of the pump body 10, and fluidly connects the outlet tube 29 to the cannula. When the drive unit 40 (see FIG. 6, etc.) is driven, the medicinal liquid stored in the reservoir 18 of the pump body 10 is sent via the outlet tube 29 to the cannula port 106 and administered to the patient from the cannula. In other words, the outlet tube 29 is connected 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 112 is connected to the outlet tube 29, the flow path of the medical solution administration device 1 may include the outlet tube 29 and the connecting needle tube 112.

[0043] 4 shows a perspective view of an example of pump body 10, viewed from a direction that allows bottom surface portion 122, front surface portion 123, and first side surface portion 125 to be seen. Bottom surface storage portion 127 is formed at the corners of bottom surface portion 122, first side surface portion 125, and front surface portion 123 of housing 111. Bottom surface storage portion 127 is a recessed space that extends from bottom surface portion 122 toward top surface portion 121 and has a predetermined length (thickness) and a predetermined area (width).

[0044] A cylindrical connection port 128 is formed in a wall surface 127a of the bottom storage portion 127 on the side of the back surface portion 124 in the first direction. The connection port 128 has a tubular hole 128a that protrudes from the wall surface 127a toward the front surface portion 123 in the first direction (i.e., in the installation direction). The connecting needle tube 112 is disposed in the tubular hole 128a of the connection port 128. The tubular hole 128a protrudes from the wall surface 127a so as to surround the periphery of the connecting needle tube 112, thereby protecting the connecting needle tube 112. Furthermore, the connecting needle tube 112 protrudes from the wall surface 127a within the tubular hole 128a toward the front surface portion 123 in the first direction (in the installation direction). In other words, the direction in which the connection port 128 protrudes from the wall surface 127a is parallel to the first direction.

[0045] When the pump body 10 is attached to the cradle device 11, the cannula port 106 attached to the cradle device 11 is housed in the bottom storage section 127. Furthermore, the port body 181 and cap 182 of the cannula port 106 are inserted into the cylindrical hole 128a of the connection port 128. Furthermore, the connecting needle tube 112 protrudes from the wall surface 127a inside the cylindrical hole 128a toward the front surface 123 in the first direction (i.e., in the attachment direction). In other words, the direction in which the connecting needle tube 112 protrudes from the wall surface 127a is parallel to the first direction.

[0046] (Configuration of pump body 10) Fig. 5 is an example of an exploded perspective view of the pump body 10 of Fig. 3. Fig. 6 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. 7 is a diagram showing an example of the cartridge 12 in a state where the nut portion 24 is in a predetermined position.

[0047] As shown in Figure 5, 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 a plan view. The base portion 16 may be detachably attached to a cradle device 11 that can be attached to the patient's skin.

[0048] 5, 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 screwed onto the feed screw shaft 22. The base part 16 is configured as a disposable member.

[0049] 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. 6) 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.

[0050] As shown in FIG. 6 , 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. 6 and 7 while engaging with the cylindrical inner wall surface so as to prevent the medicinal liquid from leaking 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.

[0051] 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 within the movable range.

[0052] The drive unit 40 further includes a rechargeable battery 42 as a power source, a motor 44 driven by the rechargeable 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.

[0053] In this embodiment, the transmission shaft 52 is provided in the cartridge 12, and the rechargeable battery 42, motor 44, and gear box 46 are provided in the device main body 14. By providing the rechargeable battery 42, motor 44, and gear box 46 in the device main body 14 in this way, the cost of the cartridge 12 can be reduced.

[0054] The rechargeable battery 42 is a secondary battery that can be repeatedly charged and discharged. The rechargeable 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 on the base portion 16, with the transmission shaft 52 being disposed coaxially with the feed screw shaft 22.

[0055] 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.

[0056] 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.

[0057] 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. 6), 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. 7). 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.

[0058] As shown in FIGS. 5 to 7 , the device main body 14 includes a cover 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 rechargeable battery 42, the motor 44, the storage unit 72, the communication unit 73, the charging circuit unit 74, the connector unit 75, the measurement unit 76, the notification unit 77, and the detection unit 78 via a bus 79 (see FIG. 10 ). 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 drives and controls the motor 44 based on information related to medicinal liquid administration transmitted from a remote control 90.

[0059] 8 and 9 are schematic diagrams showing an example configuration of the connector unit 75. FIGS. 8 and 9 show cross sections of the housing 111 near the connector unit 75. FIG. 8 shows a state in which the opening 117 of the connector unit 75 is closed with a cap 751. FIG. 9 shows a state in which the cap 751 is removed from the opening 117 of the connector unit 75. As shown in FIG. 9, when charging the medicinal solution administration device 1, the user removes the cap 751 from the opening 117 and inserts a charging cable 251 connected to an external power source into the opening 117. A connection portion 252 is provided at the tip of the charging cable 251. When the charging cable 251 is inserted into the opening 117 of the connector unit 75, the connection portion 252 is electrically and mechanically connected to the terminal portion 755, and power is transmitted from the external power source to the rechargeable battery 42. As will be described later, the charging circuit unit 74 (see FIG. 10 ) controls charging of the rechargeable battery 42 by the external power source.

[0060] The medicinal solution administration device 1 includes a detection unit 78 that detects whether the cap 751 is open or closed. In the examples of FIGS. 8 and 9, the detection unit 78 is configured, for example, by a photoreflector sensor. As shown in FIGS. 8 and 9, a movable member 753 is attached to the cap 751 via a connecting portion 754. As shown in FIG. 8, when the cap 751 is closed, the movable member 753 is located at a predetermined position. The detection unit 78, which is configured by a photoreflector sensor, optically determines whether the movable member 753 is located at the predetermined position and detects whether the cap 751 is open or closed. If the movable member 753 is not located at the predetermined position, the detection unit 78 determines that the cap 751 is open. Note that the detection unit 78 may have any configuration as long as it can detect whether the cap 751 is open or closed. For example, the detection unit 78 may be a magnetic sensor that detects the magnetic force of a magnet provided in the movable member 753. Alternatively, for example, the detection unit 78 may be a mechanical switch sensor that mechanically detects whether the cap 751 is open or closed.

[0061] A protrusion 119 is provided around opening 117. As shown in Figures 8 and 9, protrusion 119 receives cap 751 and inserted charging cable 251, and locks them inside housing 111. Also, as shown in Figure 9, protrusion 119 has a fall-off prevention mechanism in which movable member 753 interferes with protrusion 119, preventing cap 751 from being completely removed from medicinal solution administration device 1.

[0062] Gasket 752 may be provided on the outer periphery of cap 751. As shown in Fig. 8, when cap 751 is closed, gasket 752 may be in close contact with inner wall 118 of opening 117. With this configuration, closing cap 751 can prevent dust, moisture, and the like from entering from the outside.

[0063] Fig. 10 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 rechargeable battery 42, the motor 44, the storage unit 72, the communication unit 73, the charging circuit unit 74, the connector unit 75, the measurement unit 76, the notification unit 77, and the detection unit 78 are electrically connected to the control unit 71 via the bus 79.

[0064] 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).

[0065] 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.

[0066] 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.

[0067] The charging circuit unit 74 is an electric circuit for transferring power supplied from a power source connected to the connector unit 75 to the rechargeable battery 42. The charging circuit unit 74 includes a switch that can electrically connect and disconnect the connector unit 75 and the rechargeable battery 42.

[0068] The measurement unit 76 measures the remaining charge (remaining capacity) of the rechargeable battery 42. The measurement unit 76 may measure the remaining charge of the rechargeable battery 42 using any method, such as a voltage measurement method, a coulomb counter method, a battery cell modeling method, or an impedance track method.

[0069] The configurations of the rechargeable battery 42, the motor 44, the connector unit 75, the notification unit 77, and the detection unit 78 are as described above.

[0070] 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.

[0071] (Configuration of remote control 90) Fig. 11 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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, 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.

[0077] 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.

[0078] (Operation of the drug solution administration device 1) 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. 6).

[0079] 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. As a result, power from rechargeable battery 42 of cartridge 12 is supplied 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. are started up by receiving power from this rechargeable battery 42.

[0080] 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.

[0081] 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 from their bent state to their original 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. Thereafter, by further advancing the nut portion 24, the medicinal liquid in the reservoir 18 is pressed 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 112, 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 solution has been discharged from the connecting needle tube 112, the user instructs the medicinal solution 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.

[0082] Next, the user attaches the cradle device 11 to a predetermined location on the skin (e.g., the patient's abdomen), uses the puncture mechanism to place the cannula of the cannula port 106 inside the body, and engages the cannula port 106 with the cradle device 11. Next, the user attaches the pump main body 10, to which the cartridge 12 and device main 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.

[0083] 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.

[0084] 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.

[0085] As described above, the medicinal solution administration device 1 according to this embodiment includes, as a power source, a rechargeable battery 42 that can be repeatedly charged and discharged. The rechargeable battery 42 is charged by connecting an external power source to a connector 75 provided in the device body 14 via a charging cable 251. The connector 75 is provided with a cap 751 for protecting a terminal 755. When the terminal 755 is protected by a mechanical cap 751 as shown in FIGS. 8 and 9 , a user may forget to insert the cap 751 after charging the rechargeable battery 42. Furthermore, if the cap 751 is not inserted completely, the cap 751 may get caught on the patient's clothing or the like during use of the medicinal solution administration device 1, causing the cap 751 to loosen or come off the connector 75. As a result, the terminal 755 is exposed to the outside, allowing sweat, dust, and the like to enter the housing 111, potentially causing problems such as a short circuit in the charging circuit 74 or corrosion of the terminal 755. When it is detected that the cap 751 is open for a predetermined time without a charging device such as the charging cable 251 being connected to the connector portion 75, the medicinal solution administration device 1 issues an alert to the user. Therefore, the medicinal solution administration device 1 can prevent the cap 751 from being left open.

[0086] Figures 12 and 13 are flowcharts showing an example of the operation of the medicinal liquid administration device 1 of Figure 1. The operation of the medicinal liquid administration device 1 described with reference to Figures 12 and 13 may correspond to one of the control methods of the medicinal liquid administration device 1. The operation of each step in Figures 12 and 13 may be performed based on the control of the control unit 71 of the medicinal liquid administration device 1. The following processing is performed when the cradle device 11 is attached to the abdomen or the like of the patient.

[0087] In step S1 of Fig. 12, the control unit 71 determines whether or not the pump main body 10 is attached to the cradle device 11 using the attachment detection switch 133. If the pump main body 10 is attached to the cradle device 11 (YES in step S1), the control unit 71 proceeds to step S11 of Fig. 13, and if not (NO in step S1), the control unit 71 proceeds to step S2.

[0088] In step S2, control unit 71 determines whether charging cable 251 is connected to connector unit 75. For example, control unit 71 may determine whether charging cable 251 or an external power source is connected to connector unit 75 based on the potential or current observed in charging circuit unit 74. Alternatively, connector unit 75 may be provided with an attachment detection switch or sensor for detecting physical contact when charging cable 251 is connected to connector unit 75. If charging cable 251 is connected to connector unit 75 (YES in step S2), control unit 71 proceeds to step S3, and if not (NO in step S2), control unit 71 proceeds to step S6.

[0089] In step S3, the control unit 71 executes a charging operation to charge the rechargeable battery 42. Specifically, the control unit 71 controls the charging circuit unit 74 to take in power from an external power source via the charging cable 251 connected to the connector unit 75 and supply the power to the rechargeable battery 42.

[0090] In step S4, the control unit 71 causes the measurement unit 76 to measure the remaining amount (remaining capacity) of the rechargeable battery 42.

[0091] In step S5, the control unit 71 notifies the user of the remaining charge of the rechargeable battery 42 based on the remaining charge of the rechargeable battery 42 measured in step S4. For example, the control unit 71 may cause the notification unit 77 to notify the user of the remaining charge of the rechargeable battery 42. Specifically, if the notification unit 77 is configured with a single LED lamp, the notification unit 77 may notify the user of the remaining charge of the rechargeable battery 42 by, for example, red, orange, white, blue, green, or by not lighting up. If the notification unit 77 is configured with multiple LED lamps, the notification unit 77 may indicate the remaining charge of the rechargeable battery 42 by the number of lit LED lamps. If the notification unit 77 is equipped with a display, a speaker, a vibrator, or the like, the notification unit 77 may indicate the remaining charge of the rechargeable battery 42 by these. Furthermore, the control unit 71 may communicate with the remote control 90 via the communication unit 73 and cause the output unit 95 to output information related to the remaining charge of the rechargeable battery 42. After completing the processing of step S5, the control unit 71 returns to step S1.

[0092] In step S6, the control unit 71 waits for a first time period, which may be set to a value of, for example, about 0.5 to 5 seconds.

[0093] In step S7, control unit 71 detects, by detection unit 78, whether cap 751 is inserted into connector unit 75, i.e., whether cap 751 is open or closed. If cap 751 is inserted (YES in step S7), control unit 71 returns to step S1, and if not (NO in step S7), control unit 71 proceeds to step S8.

[0094] In step S8, the control unit 71 notifies the user that the cap 751 has been removed. For example, the control unit 71 may cause the notification unit 77 to notify the user that the cap 751 has been removed. Specifically, if the notification unit 77 is configured with a single LED lamp, the notification unit 77 may notify the user that the cap 751 has been removed by lighting up or flashing a specific color (for example, red). If the notification unit 77 is configured with a plurality of LED lamps, the notification unit 77 may notify the user that the cap 751 has been removed by, for example, flashing the plurality of LED lamps. The notification unit 77 may light up an LED lamp that displays a pattern that prompts the user to attach the cap 751 to the connector unit 75. If the notification unit 77 is equipped with a display, a speaker, a vibrator, or the like, the notification unit 77 may notify the user that the cap 751 has been removed by using these. Furthermore, the control unit 71 may communicate with the remote control 90 via the communication unit 73 and cause the output unit 95 to output information indicating that the cap 751 has been removed and information prompting the user to attach the cap 751. When the control unit 71 completes the processing of step S5, the process returns to step S1.

[0095] In step S11 of Fig. 13, control unit 71 determines whether or not charging cable 251 is connected to connector unit 75. The processing of step S11 can be performed in the same manner as step S2 of Fig. 12. If charging cable 251 is connected to connector unit 75 (YES in step S11), control unit 71 proceeds to step S15, and if not (NO in step S11), control unit 71 proceeds to step S12.

[0096] In step S12, the control unit 71 waits for a second time period. The second time period may be set to a value greater than the first time period. For example, the second time period may be set to a value between 30 seconds and 3 minutes.

[0097] In step S13, control unit 71 detects, by detection unit 78, whether cap 751 is inserted into connector unit 75, i.e., whether cap 751 is open or closed. If cap 751 is inserted (YES in step S13), control unit 71 returns to step S1 in Fig. 12, and if not (NO in step S13), control unit 71 proceeds to step S14.

[0098] In step S14, the control unit 71 notifies the user that the cap 751 has been removed. The process of step S14 can be performed in the same manner as step S8 in Fig. 12. After completing the process of step S14, the control unit 71 returns to step S1 in Fig. 12.

[0099] In step S15, control unit 71 issues a notification that connection of charging cable 251 is prohibited, i.e., that charging cable 251 should be removed from connector unit 75. For example, control unit 71 may cause notification unit 77 to notify that connection of charging cable 251 is prohibited. Specifically, if notification unit 77 is configured with a single LED lamp, notification unit 77 may notify that connection of charging cable 251 is prohibited by illuminating or flashing a specific color (for example, red). If notification unit 77 is configured with multiple LED lamps, notification unit 77 may notify that connection of charging cable 251 is prohibited by, for example, flashing the multiple LED lamps. Notification unit 77 may also light up an LED lamp that displays a design that prompts, for example, to remove charging cable 251 from connector unit 75. If notification unit 77 is equipped with a display, a speaker, a vibrator, or the like, it may notify that connection of charging cable 251 is prohibited by these. Furthermore, control unit 71 may communicate with remote control 90 via communication unit 73 and cause output unit 95 to output information indicating that connection of charging cable 251 is prohibited and information prompting the user to remove charging cable 251 from connector unit 75. When control unit 71 completes the process of step S15, the process returns to step S1 in FIG.

[0100] The drug solution administration device 1 includes a pump, a rechargeable battery 42, a connector unit 75, a cap 751, a detection unit 78, and a control unit 71. The pump transfers the drug solution filled in the reservoir 18 into the patient's body. The rechargeable battery 42 supplies power to drive the pump. The connector unit 75 can be connected to a charging device including a charging cable 251 for charging the rechargeable battery 42. The cap 751 protects the connector unit 75. The detection unit 78 detects whether the cap 751 is open or closed. If the control unit 71 detects that the charging device is not connected to the connector unit 75 and that the cap 751 has been open for a predetermined period of time, it issues an alert to the user.

[0101] As described above, medicinal solution administration device 1 includes detection unit 78 that detects whether cap 751 is open or closed, and issues an alert to the user when it detects that cap 751 has been open for a predetermined time without a charging device being connected to connector unit 75. Therefore, medicinal solution administration device 1 can prevent cap 751 from being left open, thereby more reliably protecting connector unit 75.

[0102] The pump, rechargeable battery 42, connector unit 75, cap 751, detection unit 78, and control unit 71 may be provided in pump main body 10. Medical solution administration device 1 may further include an attachment detection switch 133 as a determination unit that determines whether pump main body 10 is attached to cradle device 11 that is attached to the patient's skin. Control unit 71 may control the issuance of an alert depending on whether it is determined that pump main body 10 is attached to cradle device 11.

[0103] In this way, medicinal solution administration device 1 can effectively notify the user that cap 751 is left open by controlling the issuance of an alert depending on whether pump body 10 is attached to cradle device 11, which is attached to the abdomen or the like of the patient. Therefore, medicinal solution administration device 1 can more reliably protect connector portion 75.

[0104] Furthermore, suppose that when it is determined that pump body 10 is attached to cradle device 11, it is detected that cap 751 is open for a predetermined time without a charging device being connected to connector portion 75. In such a case, control portion 71 may issue an alert from output portion 95 included in remote control 90 for operating medicinal solution administration device 1.

[0105] In this way, when pump body 10 is attached to cradle device 11 attached to the abdomen or the like of a patient, medicinal solution administration device 1 may issue an alert from remote control 90, which is more visible to users, including the patient. Therefore, medicinal solution administration device 1 can effectively notify the patient that cap 751 has come off in a less visible location, such as inside the patient's clothing, by getting caught on the patient's clothing.

[0106] Furthermore, the medicinal solution administration device 1 may further include an alarm unit 77 for notifying the user of information. When it is not determined that the pump main body 10 is attached to the cradle device 11, and when it is detected that the charging device is not connected to the connector unit 75 and the cap 751 has been open for a predetermined time, the control unit 71 may cause the alarm unit 77 to issue an alert.

[0107] When pump body 10 is not attached to cradle device 11, pump body 10 is considered to be easily visible to a user such as a patient. Therefore, when pump body 10 is not attached to cradle device 11, medicinal solution administration device 1 can effectively notify the user that cap 751 has come off by issuing an alert from notification unit 77 of pump body 10.

[0108] Furthermore, when it is determined that pump main body 10 is not attached to cradle device 11, control unit 71 may issue an alert if it is detected that cap 751 is open for a first time period without a charging device being connected to connector unit 75. When it is determined that pump main body 10 is attached to cradle device 11, control unit 71 may issue an alert if it is detected that cap 751 is open for a second time period that is longer than the first time period without a charging device being connected to connector unit 75.

[0109] When causing medicinal liquid administration device 1 to administer medicine, the user typically inserts cap 751 into connector portion 75 and then attaches pump main body 10 to cradle device 11 attached to the abdomen or the like. Therefore, it is considered that the possibility of cap 751 coming off when pump main body 10 is attached to cradle device 11 is lower than when pump main body 10 is not attached to cradle device 11. Therefore, by setting the second time period longer than the first time period, medicinal liquid administration device 1 reduces the frequency with which detection unit 78 detects whether cap 751 is open or closed when pump main body 10 is attached to cradle device 11 compared to when pump main body 10 is not attached. In this way, when the possibility of cap 751 coming off is low, medicinal liquid administration device 1 can effectively detect the detachment of cap 751 while reducing power consumption by reducing the operation frequency of detection unit 78, etc.

[0110] In addition, when the control unit 71 determines that the pump main body 10 is attached to the cradle device 11, and a charging device is connected to the connector unit 75, the control unit 71 may notify the user that connection of the charging device is prohibited.

[0111] Because cradle device 11 is attached to the patient's abdomen or the like, charging while pump main body 10 is attached to cradle device 11 may result in a current leak or a short circuit of the charging terminals. Alternatively, excessive power may be supplied to medicinal solution administration device 1 while attached to the patient's abdomen due to a malfunction of the charging adapter. Therefore, if a charging device is connected while pump main body 10 is attached to cradle device 11, medicinal solution administration device 1 can urge the user to avoid such a problem by notifying the user that connection of the charging device is prohibited.

[0112] The pump body 10 may include a plunger 20, a movable unit, and a drive unit 40. The plunger 20 may be provided in the reservoir 18 and may be movable in the longitudinal direction of the reservoir 18. The movable unit may be capable of engaging with the plunger 20 and pressing the plunger 20 toward the tip side of the reservoir 18 by moving within a movable range. The drive unit 40 may move the movable unit within the movable range.

[0113] With this configuration, the medicinal liquid administration device 1 can administer the medicinal liquid to the patient by appropriately controlling the dosage as a syringe pump.

[0114] 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.

[0115] Furthermore, for example, the configuration and operation of the medicinal liquid administration device 1 may be distributed among multiple computers that can communicate with each other. Furthermore, for example, some or all of the components of the medicinal liquid administration device 1 may be provided in another device such as a remote control 90. [Explanation of symbols]

[0116] 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 Rechargeable battery 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 71 Control Unit 72 Memory section 73 Communications Department 74 Charging circuit section 75 Connector part 751 Cap 752 Gasket 753 Movable parts 754 Joint 755 Terminal section 76 Measurement section 77 Information Department 78 Detector 79 Bus 106 Cannew Report 111 Cabinet 112 Connecting needle tube 117 Opening 118 Inner wall 119 Protrusion 121 Top part 122 Bottom part 123 Front 124 Back part 125 First side part 126 Second side part 127 Bottom storage area 127a Wall 128 connection port 128a Cylindrical hole 131 mating projection 132 sliding groove 133 Wearing detection switch 134 Detection groove 135 First guide groove 136 First engagement hook portion 137 Second guide groove 138 second engagement hook portion 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 251 Charging Cable 252 Connection

Claims

1. a pump that delivers the medicinal solution filled in the reservoir; a rechargeable battery that supplies power to the pump; a connector portion to which a charging device for charging the rechargeable battery can be connected; a cap for protecting the connector portion; a detection unit that detects whether the cap is open or closed; A control unit; Equipped with When it is detected that the charging device is not connected to the connector portion and the cap is open for a predetermined time, the control portion notifies an alert to a user. Drug administration device.

2. the pump, the rechargeable battery, the connector, the cap, the detection unit, and the control unit are provided in a pump body, The pump device further includes an attachment part that can be attached to the skin of a patient, and a determination part that determines whether the pump body is attached to a cradle device to which the pump body can be attached; the control unit controls the issuance of the alert depending on whether it is determined that the pump body is attached to the cradle device. The drug solution administration device according to claim 1 .

3. The drug solution administration device of claim 2, wherein when the control unit determines that the pump body is attached to the cradle device, and detects that the charging device is not connected to the connector unit and the cap is open for the predetermined period of time, the control unit issues the alert from an output unit provided in a remote control for operating the drug solution administration device.

4. further comprising a notification unit for notifying a user of information; When it is not determined that the pump body is attached to the cradle device, and when it is detected that the charging device is not connected to the connector portion and the cap is open for the predetermined time, the control unit causes the notification unit included in the medicinal solution administration device to issue the alert. The drug solution administration device according to claim 2 .

5. The control unit If it is determined that the pump body is not attached to the cradle device, and if it is detected that the charging device is not connected to the connector portion and the cap is open for a first time, the alert is issued; When it is determined that the pump body is attached to the cradle device, if it is detected that the charging device is not connected to the connector portion and the cap is open for a second time period that is longer than the first time period, the alert is issued. The drug solution administration device according to any one of claims 2 to 4.

6. When it is determined that the pump body is attached to the cradle device, and when the charging device is connected to the connector portion, the control unit notifies the user that connection of the charging device is prohibited. The drug solution administration device according to claim 2 .

7. The pump body includes: a plunger disposed within the reservoir and movable in a longitudinal direction of the reservoir; a movable portion that can move within a movable region to engage with the plunger and press the plunger toward the distal end of the reservoir; a drive unit that moves the movable unit within the movable region; The drug solution administration device according to claim 2 .

8. The drug solution administration device according to claim 1 ; a remote controller for operating the drug solution administration device; A drug solution administration system comprising:

9. A method for controlling a drug solution administration device, comprising: The drug solution administration device is a pump for transferring the medicinal solution filled in the reservoir; a rechargeable battery that supplies power to drive the pump; a connector portion to which a charging device for charging the rechargeable battery can be connected; a cap for protecting the connector portion; a detection unit that detects whether the cap is open or closed; A control unit; Equipped with and when the control unit detects that the charging device is not connected to the connector unit and the cap is open for a predetermined time, the control unit issues an alert to a user. A method for controlling a drug solution administration device.

10. A program for controlling a drug solution administration device, The drug solution administration device is a pump for transferring the medicinal solution filled in the reservoir; a rechargeable battery that supplies power to drive the pump; a connector portion to which a charging device for charging the rechargeable battery can be connected; a cap for protecting the connector portion; a detection unit that detects whether the cap is open or closed; A control unit; Equipped with causing the control unit to execute a procedure for notifying a user of an alert when it is detected that the charging device is not connected to the connector unit and the cap is open for a predetermined time period; program.

Images