WO2020195033A1

WO2020195033A1 - Drug solution administration device and method for controlling drug solution administration device

Info

Publication number: WO2020195033A1
Application number: PCT/JP2020/001260
Authority: WO
Inventors: 勝平佐々木
Original assignee: テルモ株式会社
Priority date: 2019-03-22
Filing date: 2020-01-16
Publication date: 2020-10-01
Also published as: JP7407795B2; JPWO2020195033A1

Abstract

The present invention relates to a drug solution administration device which is used in a state where the device body is attached to a cradle adhering to the skin. The device body stores, in a housing, a reservoir filled with a drug solution, a liquid supply tube extending from the reservoir, and a computation unit for controlling the discharge of the drug solution from the reservoir, and is provided with an engagement part which exposes the distal end part of the liquid supply tube to the outside of the housing. The cradle has a cannula part to be inserted subcutaneously and a connection port having a fit-in end part to be connected to the engagement part. The drug solution administration device is further provided with a connection detection device for detecting the connection between the engagement part and the connection port. This enables the computation unit to control the discharge of the drug solution from the reservoir on the basis of signals from the connection detection device.

Description

Control method of drug solution administration device and drug solution administration device

The present invention relates to a drug solution administration device and a method for controlling the drug solution administration device.

In recent years, a treatment method in which a drug solution is continuously administered into a patient's body by subcutaneous injection or intravenous injection has been performed. For example, as a treatment method for a diabetic patient, a treatment in which a small amount of insulin is continuously administered into the body of the patient is carried out. As an example of the drug solution administration device used in this treatment method, there is one shown in Patent Document 1 below.

The drug solution administration device shown in Patent Document 1 below has an injection section (injection disposable section) provided with an injection member (cannula) for injecting the drug solution into the living body, and a liquid delivery member (liquid delivery disposable section) for feeding the drug solution to the injection member. A liquid feeder equipped with a liquid dispenser that feeds liquid to the unit and the liquid feed reuse unit, a detection unit that detects the connection and separation between the injection unit and the liquid supply unit, and a control unit that controls the operation of the liquid dispenser. Has. The detection unit includes a contact member provided on one surface of the housing of the injection disposable unit and a switch provided on one surface of the connecting portion of the liquid feeding disposable unit.

According to the drug solution administration device having such a configuration, if the control unit limits the administration operation by the liquid dispenser based on the result of the detection unit detecting that the injection unit and the liquid supply unit are connected. , It is said that unintended administration of drug solution into the living body can be prevented.

International Publication No. 2016/075976

However, in the above-mentioned chemical solution administration device in which the injection section and the liquid delivery section are separably connected, even when they are connected, the cannula provided in the injection section and the liquid delivery section are provided. The connection state of the liquid dispenser with the liquid supply pipe is not always good. In addition, if the connection between the cannula and the liquid feed pipe is unstable after connection, there is a concern that the chemical liquid may leak from these connection parts, and the poor connection between the cannula and the liquid feed pipe may cause a highly accurate chemical liquid. It was a factor that hindered administration.

Therefore, an object of the present invention is to provide a drug solution administration device capable of detecting the connection state between the cannula and the liquid delivery pipe, and to provide a control method of the drug solution administration device capable of highly accurate drug solution administration. And.

The drug solution administration device of the present invention for achieving such an object relates to a drug solution administration device used by attaching the device body to a cradle that adheres to the skin. The main body of the device accommodates a reservoir filled with a chemical solution, a liquid feed pipe extending from the reservoir, and a calculation unit for controlling the discharge of the chemical liquid from the reservoir in a housing, and the tip of the liquid feed pipe is accommodated. A fitting portion that is exposed to the outside of the housing is provided. The cradle has a cannula that is punctured and inserted subcutaneously and a connecting port that has a fitting end that connects to the fitting. The drug solution administration device further includes a connection detection device that detects the connection between the fitting portion and the connection port.

According to the present invention, it is possible to provide a drug solution administration device capable of detecting a connection state between a cannula and a liquid delivery pipe, and to provide a control method of a drug solution administration device capable of highly accurate drug solution administration. it can.

It is an exploded perspective view for demonstrating the whole structure of the drug solution administration apparatus of 1st Embodiment. It is a top view of the main part of the drug solution administration apparatus of 1st Embodiment. It is a block diagram of the drug solution administration apparatus of 1st Embodiment. It is a perspective view of the apparatus main body in the drug solution administration apparatus of 1st Embodiment. It is a perspective view for demonstrating the attachment of the apparatus main body with respect to the cradle in the chemical solution administration apparatus of 1st Embodiment. It is sectional drawing (the 1) excerpt of the main part of the drug solution administration apparatus of 1st Embodiment. It is sectional drawing (the 2) excerpt of the main part of the drug solution administration apparatus of 1st Embodiment. It is an enlarged cross-sectional view (the 1) explaining the connection detection apparatus provided in the chemical solution administration apparatus of 1st Embodiment. FIG. 2 is an enlarged cross-sectional view (No. 2) illustrating a connection detection device provided in the drug solution administration device of the first embodiment. It is a flowchart explaining the control method of the drug solution administration apparatus of 1st Embodiment. It is sectional drawing (the 1) excerpt of the main part of the drug solution administration apparatus of 2nd Embodiment. It is sectional drawing (the 2) excerpt of the main part of the drug solution administration apparatus of 2nd Embodiment. It is a block diagram of the drug solution administration apparatus of 2nd Embodiment.

Hereinafter, each embodiment to which the present invention is applied will be described in detail with reference to the drawings. In each embodiment, the same components are designated by the same reference numerals, and duplicate description will be omitted.

<< First Embodiment >>
<Configuration of drug solution administration device>
FIG. 1 is an exploded perspective view for explaining the overall configuration of the drug solution administration device 1 of the first embodiment. FIG. 2 is a plan view of a main part of the drug solution administration device 1 of the first embodiment. Further, FIG. 3 is a block diagram of the drug solution administration device 1 of the first embodiment. The drug solution administration device 1 shown in these figures is a device for continuously administering the drug solution into the body of a patient. This drug solution administration device 1 can administer insulin, analgesics, anticancer therapeutic agents, HIV agents, iron chelating agents, pulmonary hypertension therapeutic agents and the like.

Such a drug solution administration device 1 has a device main body 20, a cradle 30, an administration port 40 installed in the cradle 30, a connection detection device 50 provided in the device main body 20 and the administration port 40, and a remote controller 60. Of these, the apparatus main body 20 can be detachably separated into the reuse portion 20a and the disposable portion 20b. FIG. 2 corresponds to a plan view of the disposable portion 20b, the cradle 30, and the administration port 40 of the apparatus main body 20.

Hereinafter, based on these figures, the detailed configuration of the drug solution administration device 1 will be described in the order of the reuse unit 20a and the disposable unit 20b, the cradle 30, the administration port 40, the connection detection device 50, and the remote controller 60 constituting the device main body 20. explain.

The device main body 20 is attached by sliding in the direction from the first end to the second end of the cradle 30. This direction (mounting direction) is defined as the first direction X, and the direction orthogonal to the first direction X and orthogonal to the direction in which the device main body 20 and the cradle 30 overlap when the drug solution is administered is the second direction. Let it be Y (width direction). That is, the second direction Y is a direction that is substantially parallel to the surface of the living body when the drug solution is administered by the drug solution administration device 1. The direction in which the apparatus main body 20 and the cradle 30 overlap, that is, the direction orthogonal to the first direction X and the second direction Y is defined as the third direction Z (vertical direction). Here, the third direction Z is a direction orthogonal to the surface of the living body when the drug solution is administered by the drug solution administration device 1. That is, the lower side of the third direction Z is the direction toward the surface of the living body.

[Reuse unit 20a (device body 20)]
The reuse unit 20a includes a lid 11, a circuit board 12, and a liquid feed drive unit 13. The reuse unit 20a is a portion in which the electronic control functions of the apparatus main body 20 are centrally arranged. The reuse unit 20a is configured to accommodate an electronic control function inside the lid 11 shown in FIG. A circuit board 12 and a liquid feeding drive unit 13 are housed inside the lid 11. The circuit board 12 is provided with a main body output unit 14, a main body communication unit 15, and a main body calculation unit 16. The liquid feeding drive unit 13 includes a motor, a gear unit, and the like. Further, the reuse unit 20a is provided with a sensor 52 of the connection detection device 50 described below as an electronic control function.

-Lid 11-
The lid 11 is fitted to the housing 21 of the disposable portion 20b described later, and the upper surface in the third direction Z is the top surface of the drug solution administration device 1. The main surface side (lower side of the third direction Z) of the housing 11 toward the disposable portion 20b has a configuration in which the above-mentioned electronic control function is housed. Here, the main surface refers to the connecting surface between the reuse unit 20a and the disposable unit 20b.

-Circuit board 12-
The circuit board 12 is fixed inside the lid 11, and the liquid feed drive unit 13, the main body output unit 14, the main body communication unit 15, the main body calculation unit 16, and the sensor 52 described above are connected to each other. These are installed. Further, the circuit board 12 includes a power supply unit (not shown) for supplying electric power from the battery 23a arranged in the disposable unit 20b to be described later to each unit via wiring.

-Liquid feed drive unit 13-
The liquid feed driving unit 13 drives the pusher of the reservoir 22 provided in the disposable unit 20b. The liquid feeding drive unit 13 is composed of, for example, a motor driven by a battery and a plurality of stages of gears that rotate in conjunction with the drive of the motor. The liquid feeding drive unit 13 is not limited to these configurations, and may have a mechanism for discharging the chemical liquid from the reservoir 22.

-Main unit output unit 14-
The main body output unit 14 outputs the alarm W. As the alarm W output by the main body output unit 14, for example, one that emits vibration or sound alone or in combination thereof is applied, and may further emit light.

-Main unit communication unit 15-
The main body communication unit 15 is a part that performs wireless communication with the paired remote controller 60. The main body communication unit 15 has a transmission unit and a reception unit, and is a portion that performs wireless communication using radio waves in a predetermined wavelength band, and particularly performs wireless communication using ultra-high frequency waves or microwaves.

Here, it is assumed that the main body communication unit 15 performs wireless communication with a communication distance of about 100 m. Specifically, ZigBee (IEEE802.154: frequency 2.4 GHz), Bluetooth (registered trademark: IEEE802.5.1: frequency 2.4 GHz), wireless LAN (IEEE802.11a / b / g: frequency 2. Standardized wireless communication technology such as 4 GHz, 5 GHz) is applied.

-Main unit calculation unit 16-
The main unit calculation unit 16 controls the operation of the liquid feed drive unit 13 based on the signal transmitted from the paired remote controller 60 and the signal acquired by the sensor 52, thereby discharging the chemical solution from the reservoir 22. To control. Further, the main body calculation unit 16 controls the operations of the main body output unit 14 and the main body communication unit 15. Such a main body arithmetic unit 16 includes, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory), which are not shown here. The control of drug solution administration executed by the main body calculation unit 16 will be described in detail in the subsequent control method of the drug solution administration device.

[Disposable part 20b (device body 20)]
The disposable portion 20b includes a housing 21, a reservoir 22 housed inside the housing 21, and a battery box 23. The upper surface (main surface side) of the housing 21 is covered with the lid 11 of the reuse portion 20a.

-Case 21-
The housing 21 is a rectangular parallelepiped that is substantially rectangular in top view, and all corners are rounded. When in use, the housing 21 stands on the bottom surface 21d of the housing facing the cradle 30 and the side surface of the housing standing toward the reuse portion 20a side (upper side in the third direction Z) around the bottom surface 21d of the housing. It has a part 21e. The space surrounded by the housing bottom surface 21d and the housing side surface portion 21e forms the storage portion 21a. The storage unit 21a stores the reservoir 22 and the battery 23a, which will be described later. The storage portion 21a is a concave portion having a large opening on the main surface side of the flat box-shaped housing 21. That is, the storage portion 21a is open toward the reuse portion 20a. In such a housing 21, the opening of the storage portion 21a is closed by the lid 11 of the reuse portion 20a. At one of the corners on the bottom surface of the flat box-shaped housing 21, a back surface storage portion 21b is provided in which a part of the bottom surface is recessed upward in the third direction Z. The volume of the storage portion 21a is larger than the volume of the backside storage portion 21b. Further, the bottom surface 26 of the back surface storage portion 21b is convex toward the main surface side in the housing 21. More specifically, the bottom surface 26 of the back surface storage portion 21b is recessed from the bottom surface 21d of the housing toward the opening side of the storage portion 21a at least according to the height of the wall portion 25. A fitting portion 21c exposed to the back surface storage portion 21b is formed on the wall portion 25 that separates the storage portion 21a and the back surface storage portion 21b. Further, the back surface accommodating portion 21b accommodates the administration port 40 in a state of being installed in the cradle 30 described later.

The fitting portion 21c is provided on the wall portion 25. The fitting portion 21c has a substantially cylindrical tubular hole 28 projecting from the wall portion 25 toward the back surface storage portion 21b, and a connecting needle tube 22b. The connecting needle tube 22b is fluidly connected to the liquid feeding tube 22a and is exposed to the back surface accommodating portion 21b at the substantially center in the axial direction of the tubular hole 28. The connecting needle tube 22b is the tip end portion of the liquid feeding pipe 22a extending from the reservoir 22, and may be formed integrally with the liquid feeding pipe 22a. The central axis of the tubular hole 28 is substantially parallel to the bottom surface of the storage portion 21a or the bottom surface 21d of the housing. The tubular hole 28 protects the connecting needle tube 22b by projecting from the wall portion 25 so as to surround the periphery of the connecting needle tube 22b. The connecting needle tube 22b projects from the wall portion 25 toward the second end portion side in the first direction X in the tubular hole 28.

-Reservoir 22-
The reservoir 22 has a syringe shape including an outer cylinder in which a drug solution to be administered to a patient is stored inside and a pusher having a gasket fitted in the outer cylinder. The reservoir 22 is housed in the storage portion 21a of the housing 21. A chemical liquid discharge port is provided at the tip of the outer cylinder of the reservoir 22, and the liquid supply pipe 22a is connected via the discharge port. The reservoir 22 is not limited to the syringe shape, and various shapes such as a soft bag can be adopted.

FIG. 4 is a perspective view of the device main body 20 in the chemical solution administration device of the first embodiment, in which the device main body 20 in which the reuse portion 20a and the disposable portion 20b are combined is viewed from the back surface storage portion 21b side of the disposable portion 20b. It is a view. As shown in this figure, the tip of the liquid feeding pipe 22a is located on the back surface storage portion 21b side at substantially the center of the fitting portion 21c (cylinder hole 28) formed in the housing 21 of the disposable portion 20b of the apparatus main body 20. It is in a pulled out state. The tubular hole 28 and the connecting needle tube 22b project toward the second end side in the first direction X in which the device main body 20 is attached to the cradle 30.

Returning to FIGS. 1 to 3, a gear is provided at the end of the pusher of the reservoir 22, and in a state where the reuse portion 20a and the disposable portion 20b are connected, the gear provided at the end of the pusher is , It is fitted with the gear of the liquid feeding drive unit 13 constituting the reuse unit 20a. As a result, the pusher of the reservoir 22 is pushed into the outer cylinder by the drive of the liquid feeding drive unit 13, and the chemical liquid is discharged from the tip of the liquid feeding pipe 22a (connecting needle tube 22b) through the discharge port of the outer cylinder. It has become.

-Battery box 23-
The battery box 23 stores the battery 23a that serves as a power source for the liquid feeding drive unit 13 that constitutes the reuse unit 20a and other components, and is fixed to the storage unit 21a of the housing 21. The battery box 23 includes an electrode for connecting the battery 23a housed inside to a power supply unit provided on the circuit board 12 of the reuse unit 20a. The battery box 23 and the battery 23a may be provided as components of the reuse unit 20a.

[Cradle 30]
The cradle 30 has an adhesive portion 32, a mounting surface portion 31a, and a side wall portion 31b, and an administration port 40 described later is attached to the cradle 30. The cradle 30 is used by adhering it to the skin. The cradle 30 holds the administration port 40, and the apparatus main body 20 in a state where the above-mentioned reuse portion 20a and the disposable portion 20b are coupled is mounted. The device body 20 is attached to the cradle 30 by sliding the device body 20 on the cradle 30 toward the second end side in the first direction X with respect to the cradle 30 adhered on the skin surface. Such a cradle 30 includes a mounting surface portion 31a, a side wall portion 31b, and an adhesive portion 32.

-Adhesive part 32-
The adhesive portion 32 is a soft sheet member provided on the surface of the mounting surface portion 31a opposite to the side on which the device main body 20 is mounted, and has adhesiveness to the skin. The adhesive portion 32 is provided on the back surface (skin side surface) of the mounting surface portion 31a in a wide range of the mounting surface portion 31a, avoiding the through hole 31d that projects the cannula portion 41 of the administration port 40 described later. There is.

-Mounting surface portion 31a, side wall portion 31b-
The cradle 30 is configured to be able to support the apparatus main body 20. The cradle 30 has a substantially flat plate-shaped mounting surface portion 31a and a side wall portion 31b. The mounting surface portion 31a is formed in a substantially rectangular shape with curved corners when viewed from above. When the device main body 20 is mounted on the cradle 30, the housing 21 of the device main body 20 is mounted on the mounting surface portion 31a.

A side wall portion 31b that stands substantially perpendicular to the mounting surface portion 31a is formed on at least three sides of the mounting surface portion 31a that is substantially rectangular in top view. For this reason, a plurality of side walls are erected from the mounting surface portion 31a in the direction opposite to the skin. The side of the mounting surface portion 31a on the first end side in the first direction X does not have a side wall portion that is substantially perpendicular to the mounting surface portion 31a. That is, at this position, the mounting surface portion 31a is open.

FIG. 5 is a perspective view for explaining the attachment of the device main body 20 to the cradle 30 in the drug solution administration device 1 of the first embodiment. As shown in this figure, when the device main body 20 is mounted on the cradle 30, the device is mounted on the mounting surface 31a from the side having no side wall portion 31b toward the second end side in the first direction X. Slide the main body 20.

Further, as shown in FIGS. 1, 2, and 5, the mounting surface portion 31a includes a holding portion 31c for holding the administration port 40. The holding portion 31c is provided in a region on the second end side in the first direction X in a top view of the mounting surface portion 31a. The holding portion 31c is a plurality of ribs erected from the mounting surface portion 31a around the through hole 31d described later. When the cannula portion 41 is punctured and inserted into the skin by a puncture device (not shown), the administration port 40 is fitted into the holding portion 31c to hold the cannula portion 41 and the administration port 40 in the cradle 30.

The mounting surface portion 31a has a through hole 31d. The cannula portion 41 is punctured and inserted into the skin through the through hole 31d. Around the through hole 31d, a rib standing in the direction opposite to the skin is provided, and the rib supports the lower surface of the administration port 40.

FIG. 6 is a cross-sectional view (No. 1) of the main part of the drug solution administration device of the first embodiment, which is the administration port 40 immediately before mounting the device main body 20 on the cradle 30 holding the administration port 40. It is a cross-sectional view of the vicinity. Further, FIG. 7 is a cross-sectional view (No. 2) of an excerpt of a main part of the drug solution administration device of the first embodiment, in which the administration port in a state where the apparatus main body 20 is attached to the cradle 30 holding the administration port 40. It is sectional drawing around 40.

[Administration port 40]
The drug solution supplied from the reservoir 22 of the device body 20 is administered to the patient through the administration port 40. The administration port 40 holds the cannula portion 41 that is punctured into the patient's skin and is held by the holding portion 31c of the mounting surface portion 31a in the cradle 30. Such an administration port 40 includes a substantially cylindrical cannula report 42, a lid member 43 and a seal member 44 located on the top surface of the cannula report 42, a connection port 45 connected to the apparatus main body 20, and a connection port 45. It is provided with a cap 46 for sealing the end face. Further, the administration port 40 is provided with a detected portion 51 that constitutes the connection detection device 50 described below.

-Cannula section 41-
The cannula portion 41 is a tubular member for introducing a drug solution such as insulin into the living body in a state of being punctured by the living body. Such a cannula portion 41 is formed of, for example, a resin material. As the resin material forming the cannula portion 41, for example, polyurethane, nylon, ethylene-tetrafluoroethylene copolymer (ETFE) or the like can be used. Using a puncture device (not shown), the cannula portion 41 is inserted into the living body together with the internal needle 400. After the cannula portion 41 is inserted into the living body, the puncture device is removed from the cradle 30 and discarded.

-Cannula Report 42-
The cannula report 42 has a substantially cylindrical body portion and holds the cannula portion 41. The cannula portion 41 holds the cannula portion 41 on the lower surface of the cannula report hollow portion 42a. The proximal end of the cannula portion 41 is formed into a funnel shape that expands upward in the third direction Z in the side view of the drug solution administration device 1, and is fixed to the fixed portion in the cannula report hollow portion 42a. ing. With the administration port 40 held in the cradle 30, the distal end of the cannula portion 41 (ie, the tip of the cannula) projects through the lower surface of the cannula report 42 from the through hole 31d beyond the lower surface of the cradle 30. .. The top surface of the cannula report 42 is liquidtightly sealed by the lid member 43 and the sealing member 44 inside the lid member 43. When using the drug solution administration device 1, the top surface of the cannula report 42 faces the bottom surface 26.

-Lid member 43-
The lid member 43, together with the seal member 44, seals the top opening of the cannula report 42. The lid member 43 has a through hole 43a coaxial with the axial direction of the cannula portion 41. The inner needle 400 can be inserted into the cannula report 42 having the through hole 43a and the cannula portion 41 (see FIG. 6).

-Seal member 44-
The seal member 44 is configured so that the inner needle 400 can be inserted into the cannula portion 41, and the chemical liquid leaks from the inside of the cannula portion 41 after the inner needle 400 is removed from the through hole 43a of the lid member 43. Prevent it from coming out. Examples of the material of the seal member 44 include rubber and the like.

-Connection port 45-
The connection port 45 extends from the side peripheral portion of the cannula report 42, and has a connection port main body 49 having a space continuous with the cannula hollow portion 42a and an opening forming one end of the connection port main body 49. It has a 47 and a cap 46 that tightly seals the opening 47. In the state of use of the chemical solution administration device 1, the first end side of the connection port main body 49 in the first direction X is the fitting end 48 that fits into the fitting 21c. The end face of the fitting end portion 48 is covered with a cap 46. That is, the opening 47 is closed by the cap 46. The connection port 45 and the cannula report 42 communicate with each other through the opening on the second end side of the connection port 45 in the first direction X. In the present embodiment, the connection port 45 has a substantially cylindrical shape having a hollow portion. The first end side of the connection port 45 in the first direction X has an opening 47. With the device main body 20 mounted on the cradle 30, the opening 47 of the connection port 45 is fitted into the fitting portion 21c. As a result, the device main body 20 and the cradle 30 are connected, and the chemical solution sent from the device main body 20 is delivered to the cannula section 41 through the connection port 45 and the cannula report 42.

-Cap 46-
The cap 46 tightly seals the opening of the connection port 45. The cap 46 is a substantially cylindrical member having a cap end surface 46b on one end side and an opening on the other end side of the cap peripheral surface 46a. The cap 46 is attached so as to cover the outer periphery and the end face of the opening 47 from the end face of the opening 47 toward the second end side in the first direction X. More specifically, the cap peripheral surface 46a engages with an engaging groove provided on the outer periphery of the connection port 45 (or opening 47). As a result, when the connection port 45 is inserted into the fitting portion 21c, it also functions as a sealing member between the connection port 45 and the fitting portion 21c. The cap end surface 46b may have a flat shape, but ribs may be provided along the opening shape of the connection port 45 in order to improve the sealing property. When the device body 20 is attached to the cradle 30, the connecting needle tube 22b penetrates the cap end surface 46b. As a result, a liquid feeding path is formed in which the liquid feeding pipe 22a, the connection port 45, the cannula report 42, and the cannula portion 41 communicate with each other.

It is preferable that such a cap 46 is made of a material having the following characteristics (i) to (iii). (I) The tip of the connecting needle tube 22b can be inserted from the outside of the connecting port 45. (Ii) The space between the tip of the inserted connecting needle tube 22b and the connecting port 45 can be kept liquidtight. (Iii) The hole formed in the cap 46 by inserting the connecting needle tube 22b is closed after the connecting needle tube 22b is removed. Examples of the material having the above-mentioned characteristics (i) to (iii) include rubber and the like.

[Connection detection device 50]
FIG. 8 is an enlarged cross-sectional view (No. 1) for explaining the connection detection device 50 provided in the drug solution administration device 1 of the first embodiment, and is an axial direction (that is, that is) of the cylindrical connection port 45 in the administration port 40. , Is a cross-sectional view taken along the first direction X). Further, FIG. 9 is an enlarged cross-sectional view (No. 2) for explaining the connection detection device 50 provided in the drug solution administration device 1 of the first embodiment, showing the axial direction of the cylindrical connection port 45 in the administration port 40. FIG. 5 is a cross-sectional view of a normal plane (ie, along a second direction Y). 8 and 9 are both views showing a state in which the device main body 20 is attached to the cradle 30 holding the administration port 40. Hereinafter, the configuration of the connection detection device 50 will be described with reference to FIGS. 8 and 9 and FIGS. 6 and 7 above.

In the connection detection device 50 shown in these figures, when the device main body 20 is attached to the cradle 30 in which the administration port 40 is installed, the connection port 45 of the administration port 40 is attached to the fitting portion 21c of the device main body 20. It is a device for detecting that it has been fitted. Such a connection detection device 50 is composed of a detected unit 51 provided in the administration port 40 and a sensor 52 as a detection unit provided in the device main body 20.

-Detected part 51-
The detected unit 51 is arranged at a site where the device main body 20 and the administration port 40 are close to each other or in contact with each other in the state of use of the drug solution administration device 1. The detected portion 51 is provided in the administration port 40. More specifically, the detected portion 51 is arranged in the region of the connection port 45 on the first end side in the first direction X. The detected portion 51 is arranged in the opening 47 of the connection port 45 in the administration port 40. Alternatively, the detected portion 51 is arranged on the outer periphery of the opening 47. In these cases, it is preferable to provide the detected portion 51 on the cap 46. In this case, the detected portion 51 can be formed by arranging the resin containing the magnetic member on the peripheral surface 46a of the cap. More specifically, at the time of manufacturing the cap 46, the layered magnetic portion 51a is molded over the entire circumference of the cap peripheral surface 46a. As a result, the detected portion 51 that covers the outer peripheral surface of the opening 47 can be formed, so that detection is possible regardless of the mounting orientation of the cap 46. As such a magnetic material, magnetic powder such as iron, cobalt, nickel, and ferrite can be used. As the material of the cap 46, various rubber materials and additives such as a vulcanizing agent can be appropriately used.

-Sensor 52-
The sensor 52 is provided as a detection unit for detecting the fitting of the connection port 45 into the fitting unit 21c, and is set according to the type of the detection unit 51. When the detected portion 51 is a magnetic portion 51a, the sensor 52 may be a magnetic sensor 52a capable of detecting the magnitude of the magnetic field (magnetic field) and further measuring the direction of the magnetic field. Such a magnetic sensor 52a may be, for example, a magnetoresistive element or a Hall element. The magnetic sensor 52a is attached to a position where the magnetic force of the magnetic portion 51a provided in the administration port 40 can be detected in a state where the apparatus main body 20 is normally attached to the cradle 30 in which the administration port 40 is installed. ..

Such a magnetic sensor 52a is arranged so as to hang down from the reuse portion 20a of the apparatus main body 20, for example, toward the peripheral wall of the fitting portion 21c in the disposable portion 20b. In the detectable state, the detection unit of the magnetic sensor 52a is arranged in the storage unit 21a, and the detected unit 51 is arranged in the back surface storage unit 21b. The detection unit of the magnetic sensor 52a is arranged in at least a part of the region along the peripheral surface of the tubular hole 28 in the storage unit 21a. As a result, connection detection can be performed based on the position of the reuse unit 20a constituting the device main body 20, so that the positioning accuracy can be improved.

When the device main body 20 and the cradle 30 are connected at the correct positions, the magnetic sensor 52a faces the magnetic portion 51a with the bottom surface of the optical housing 21 sandwiched between them. It is preferable that a plurality of such magnetic sensors 52a are provided so as to face the magnetic portion 51a. In this case, it is preferable that the magnetic portion 51a is arranged so as to surround the central axis of the opening 47, and that each magnetic sensor 52a and the magnetic portion 51a face each other in the same state. As a result, the strength of the magnetic force detected by each magnetic sensor 52a becomes uniform, and it can be detected that the axis surrounded by the magnetic portion 51a and the central axis of the substantially cylindrical connection port 45 are substantially parallel. ..

[Remote controller 60]
The remote controller 60 operates the drive of the device main body 20. The remote controller 60 includes a display unit 61, an operation unit 62, a controller output unit 63, a controller communication unit 64, and a controller calculation unit 65 that controls them. The remote controller 60 having these may be one in which a dedicated program is installed in a mobile terminal such as a smartphone. The details of each component are as follows.

-Display unit 61-
The display unit 61 displays various setting contents related to driving the device main body 20, input contents by the operation unit 62 described below, administration history in the device main body 20, and the like.

-Operation unit 62-
The operation unit 62 is a user interface portion for the user to input insulin administration settings by the device main body 20, execution and stop of control of the device main body 20, selection of display contents on the display unit 61, and the like. Such an operation unit 62 may be, for example, a keypad or a touch panel provided on the display surface of the display unit 61. When the operation unit 62 is a touch panel, the display unit 61 displays a selection button, a numeric keypad, or the like for the touch panel.

-Controller output unit 63-
The controller output unit 63 outputs the alarm W in response to an instruction from the controller calculation unit 65 described below. As the alarm W, for example, a controller output unit 63 that emits vibration, sound, light emission, or the like alone or in combination is applied.

-Controller communication unit 64-
The controller communication unit 64 is a part that communicates with the paired device main body 20. The controller communication unit 64 is composed of a transmission unit and a reception unit. The controller communication unit 64 is a part that performs wireless communication with the main body communication unit 15 on the device main body 20 side, and the same standardized wireless communication technology as the main body communication unit 15 is applied.

-Controller calculation unit 65-
The controller calculation unit 65 causes the display unit 61 to display various settings input in the operation unit 62, causes the controller communication unit 64 to transmit various settings to the device main body 20, and alerts the controller output unit 63. W is output.

The controller calculation unit 65 as described above is provided with, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory), which are not shown here. The above-mentioned input, display, communication, and output are executed by such a controller calculation unit 65.

<Procedure for using the drug solution administration device 1>
Next, a procedure in the case of using the drug solution administration device 1 having the above-described configuration will be described. First, the user of the drug solution administration device 1 assembles the device main body 20 by combining the reuse unit 20a and the disposable unit 20b filled with the drug solution in the reservoir 22 prior to performing the drug solution administration by the drug solution administration device 1. As a result, the electric power from the battery 23a arranged in the disposable unit 20b is supplied to the power supply unit provided on the circuit board 12 of the reuse unit 20a, and the main body calculation unit 16 provided in the reuse unit 20a is activated. In this state, the main unit arithmetic unit 16 executes a predetermined program and waits for a priming instruction from the user.

Next, the user of the chemical solution administration device 1 pushes out the chemical solution filled in the reservoir 22 by operating the operation unit 62 of the remote controller 60 so as to fill the inside of the liquid delivery pipe 22a drawn from the outer cylinder of the reservoir 22. Prime is performed so that air is discharged from the tip of the connecting needle tube 22b. By preparing a disposable portion 20b filled with a chemical solution in advance in the liquid feeding pipe 22a drawn from the reservoir 22, it is not necessary to perform priming when the reuse portion 20a and the disposable portion 20b are combined. ..

Also, referring to FIG. 6, the user of the drug solution administration device 1 installs the administration port 40 for the cradle 30. At this time, the user first adheres the cradle 30 to the skin by the adhesive portion 32. Next, the administration port 40 is installed in the holding portion 31c of the cradle 30 in a predetermined state by using a dedicated jig such as a puncture device (not shown). As a result, the cannula portion 41 of the administration port 40 and the inner needle 400 in the cannula portion 41 are punctured and inserted into the user's skin. Then, by detaching the special jig from the administration port 40, the inner needle 400 is removed from the inside of the cannula portion 41, and the cannula portion 41 is placed subcutaneously.

Next, referring to FIG. 5, the priming-executed device main body 20 is attached to the cradle 30 in which the administration port 40 is installed. After that, the user operates the remote controller 60 to input to start the administration of the drug solution. In response to the input of the start of drug solution administration, the program of the control method of the drug solution administration device described below is executed.

<Control method of drug solution administration device 1>
FIG. 10 is a flowchart for explaining a control method of the drug solution administration device 1 according to the first embodiment. In the control method of the drug solution administration device 1 described with reference to FIG. 3, the CPU of each device constituting the main body calculation unit 16 of the drug solution administration device 1 described with reference to FIG. 3 uses a program recorded in a ROM or RAM. It is realized by executing. Hereinafter, the control method of the drug solution administration device 1 will be described in the order shown in the flowchart of FIG. 10 with reference to FIG. 3 and the required figure.

[Step S101]
In step S101, the main body calculation unit 16 determines whether or not the main body communication unit 15 has received the instruction to start the administration of the drug solution. The instruction to start the administration of the drug solution is an instruction based on the input from the operation unit 62 of the remote controller 60 by the user, and the information of the administration start instruction input from the operation unit 62 is the main body communication from the controller communication unit 64. It is transmitted to the unit 15. The main body calculation unit 16 waits until the main body communication unit 15 determines that the administration start instruction has been received (YES), and when it determines that the administration start instruction has been received (YES), the main body calculation unit 16 proceeds to the next step S102. move on.

[Step S102]
In step S102, the main body calculation unit 16 refers to the signal from the sensor 52, the connection port 45 of the administration port 40 is fitted into the fitting portion 21c of the device main body 20, and the connection needle tube 22b and the cannula unit 41 are normal. Determine if it is connected to. At this time, when the signal strength from the sensor 52 exceeds the preset threshold value or is equal to or higher than the threshold value, the main body calculation unit 16 determines that the connection is normally made (YES). On the other hand, when the signal strength from the sensor 52 is equal to or less than a preset threshold value or does not exceed the threshold value, the main body calculation unit 16 determines that the connection is not normally performed (NO).

When a plurality of sensors 52 are provided in the device main body 20, the threshold values set in each sensor 52 do not have to be the same value. In this case, the signal strength detected by each sensor 52 is tested in advance in a state where the connection port 45 of the administration port 40 is normally fitted to the fitting portion 21c in the housing 21 of the disposable portion 20b of the apparatus main body 20. It is assumed that it has been acquired. Then, it is assumed that the threshold value of the signal strength detected by each sensor 52 is set based on the acquired value. Here, the state in which the connection port 45 is normally fitted into the fitting portion 21c means that the central axes of the respective central axes are in a state in which the cylindrical connection port 45 is fitted into the substantially cylindrical fitting portion 21c. It shall be in a substantially parallel state.

In this case, the main unit calculation unit 16 is normally connected (YES) when all the signal intensities from each sensor 52 exceed or exceed the threshold values set in advance. Judgment is made, and in other cases, it is judged that the connection is not normally performed (NO).

Then, if it is determined that the connection is normally made (YES), the process proceeds to step S103, and if it is determined that the connection is not normally made (NO), the process proceeds to step S104.

[Step S103]
In step S103, the main body calculation unit 16 starts the liquid feeding process of discharging the chemical solution from the reservoir 22 by driving the liquid feeding driving unit 13, and ends the series of processes.

[Step S104]
On the other hand, in step S104, the main body calculation unit 16 instructs the main body output unit 14 to output an alarm. As a result, the main body output unit 14 outputs an alarm, notifies the user of the drug solution administration device 1 that the cannula unit 41 and the connecting needle tube 22b are not normally connected, and the administration port 40 is installed. It prompts the cradle 30 to be reattached to the apparatus main body 20.

Further, the main body calculation unit 16 instructs the main body communication unit 15 to transmit a poor connection. As a result, the main body communication unit 15 transmits a connection failure notification to the controller communication unit 64. The controller calculation unit 65 instructs the controller output unit 63 to output an alarm when the controller communication unit 64 receives the notification of the connection failure. As a result, the controller output unit 63 outputs an alarm and notifies the user of the drug solution administration device 1 that the cannula unit 41 and the connecting needle tube 22b are not normally connected, so that the administration port 40 is installed. It is urged to reattach the cradle 30 and the apparatus main body 20. After that, a series of processes is completed. Here, when the user needs to reconnect the device main body 20 and the cradle 30 with the administration port 40, the sensor 52 detects that the signal from the detected unit 51 has been turned off. Then, it may return to step S102. Alternatively, after the liquid feeding process is started in step S103, that is, during the liquid feeding, the connection state between the fitting portion 21c and the connection port 45 may be constantly monitored by the sensor 52.

<Effect of the first embodiment>
In the drug solution administration device 1 of the first embodiment described above, the magnetic portion 51a is provided so as to surround the connection port 45 in the administration port 40, and the position of the apparatus main body 20 facing the fitting portion 21c into which the connection port 45 is fitted. The magnetic sensor 52a is provided on the surface. Therefore, the fitted state of the connection port 45 with respect to the fitting portion 21c can be directly detected by the signal strength from the magnetic sensor 52a. Further, this makes it possible to detect the connection between the connecting needle tube 22b held by the fitting portion 21c and the connecting port 45. Further, by providing the plurality of magnetic sensors 52a, it is possible to detect whether or not the connection port 45 is fitted in parallel with the fitting portion 21c.

As a result, when the apparatus main body 20 is attached to the cradle 30, a poor connection between the cannula portion 41 held in the administration port 40 and the fitting portion 21c is detected, and the apparatus main body 20 is attached to the user of the drug solution administration apparatus 1. It is possible to urge a fix. Further, this makes it possible to prevent the drug solution from leaking from the connection portion between the device main body 20 and the administration port 40 in the drug solution administration device 1, and to perform highly accurate drug solution administration.

<< Second Embodiment >>
<Configuration of drug solution administration device>
FIG. 11 is a cross-sectional view (No. 1) of the main part of the chemical solution administration device 2 of the second embodiment. Further, FIG. 12 is a cross-sectional view (No. 2) of an excerpt of a main part of the drug solution administration device 2 of the second embodiment. Further, FIG. 13 is a block diagram of the drug solution administration device 2 of the second embodiment. The difference between the drug solution administration device 2 of the second embodiment shown in these figures and the drug solution administration device 1 of the first embodiment is the configuration of the connection detection device 70, and the other components are the same. Therefore, only the configuration of the connection detection device 70 will be described here.

[Connection detection device 70]
The connection detection device 70 is a device for detecting that the connection port 45 is fitted into the fitting portion 21c when the device main body 20 is attached to the cradle 30 in which the administration port 40 is installed. Such a connection detection device 70 is an intermediate between a switch pressing member 71 provided in the administration port 40, a micro switch 72 as a detection unit provided in the device main body 20, and a disposable part 20b of the device main body 20. It is composed of a member 73 and a protruding member 74. The chemical solution administration device 2 may be provided with a plurality of these members. Each configuration will be described below.

-Switch pressing member 71-
The switch pressing member 71 is for pressing the micro switch 72 described below. Such a switch pressing member 71 is provided on the first end surface of the connection port 45 in the administration port 40 in the first direction X. Here, as an example, it is assumed that the switch pressing member 71 is provided in a state of being held by the cap 46 at a position where the open end of the connection port 45 is extended. More specifically, the switch pressing member 71 is a convex portion 71a provided on the cap end surface 46b. The convex portion 71a is preferably provided so that at least a part of the convex portion 71a overlaps with the position where the opening edge of the opening 47 is extended in the first direction X. The convex portion 71a is preferably provided in the upper region of the opening edge of the opening 47 in the third direction Z. This makes it easier to arrange the microswitch 72, which will be described later, extending from the reuse unit 20a. Since connection detection can be performed based on the position of the reuse unit 20a constituting the device main body 20, positioning accuracy can be improved. The convex portion 71a is preferably formed of a material that is harder than the cap 46. It is important that the switch pressing member 71 does not interfere with the sealed state of the connection port 45 by the cap 46 and the fitting of the connection port 45 into the fitting portion 21c. Further, the switch pressing member 71 may be a partially deformed cap 46 or may be molded at the same time as the cap 46. Alternatively, the switch pressing member 71 may be a separate body from the cap 46.

When the chemical solution administration device 2 has a plurality of switch pressing members 71, each switch pressing member 71 is provided at each position extending the open end of the connection port 45. The switch pressing members 71 are preferably provided at positions separated from each other, and are arranged so as to be symmetrical with respect to the center of the cap end surface 46b or the opening end surface of the connection port 45.

-Micro switch 72-
The micro switch 72 is provided as a detection unit for detecting the fitting of the connection port 45 into the fitting portion 21c. The microswitch 72 is arranged at a position where it is directly or indirectly pressed by the switch pressing member 71 when the apparatus main body 20 is attached to the cradle 30 on which the administration port 40 is installed while sliding. .. At this time, a detection relay portion A is provided on the bottom surface 28a of the tubular hole 28 of the fitting portion 21c at a position facing the switch pressing member 71 described above.

The micro switch 72 is arranged so as to hang down from the reuse portion 20a of the apparatus main body 20 toward the disposable portion 20b, for example. In the state of use of the chemical solution administration device 2, the micro switch 72 is arranged in the accommodating portion 21a and the switch pressing member 71 is arranged in the back surface accommodating portion 21b via the detection relay unit A. The micro switch 72 detects the fit of the connection port 45 into the fitting portion 21c by detecting the response from the detection relay unit A. When a plurality of switch pressing members 71 are provided, it is assumed that the micro switches 72 are provided at positions corresponding to the respective switch pressing members 71. In this case, in a state where the connection port 45 is normally fitted into the fitting portion 21c, that is, in a state where the substantially cylindrical connection port 45 is fitted into the fitting portion 21c, the respective central axes are substantially parallel. Therefore, it is assumed that a plurality of microswitches are arranged so that each switch pressing member 71 presses each corresponding microswitch 72. As a result, connection detection can be performed based on the position of the reuse unit 20a constituting the device main body 20, so that the positioning accuracy can be improved.

Further, the micro switch 72 is connected to the main body calculation unit 16. Further, the micro switch 72 is directly or indirectly pressed by the switch pressing member 71 of the administration port 40 when the apparatus main body 20 is attached to the cradle 30 on which the administration port 40 is installed while sliding. Turns on. The micro switch 72 may be provided in the reuse unit 20a if it is turned on in such a case.

-Detection relay unit A-
The detection relay unit A directly or indirectly transmits the input from the pressing member 71 to the microswitch 72 between the disposable member (cradle 30 to which the administration port 40 is connected, the disposable unit 20b) and the reuse unit 20a. At a position facing the microswitch 72, it is provided at least at one position on the bottom surface of the fitting portion 21c in the disposable portion 20b of the apparatus main body 20. The detection relay unit A is provided according to the number and position of the pressing member 71 and / or the microswitch 72. The detection relay portion A may be an opening provided on the disposable portion 20b, but it is preferable that the opening is liquid-tightly closed by an intermediate member 73 having flexibility. The intermediate member 73 may have a film shape or a plug shape. The intermediate member 73 is pressed by the switch pressing member 71 described above when the apparatus main body 20 is attached to the cradle 30 in which the administration port 40 is installed while sliding, and projects toward the microswitch 72 side. Such an intermediate member 73 is formed of, for example, a rubber member.

-Protruding member 74-
The detection relay unit A may further include a protruding member 74 in addition to the intermediate member 73. The projecting member 74 is provided on the surface of the intermediate member 73 toward the micro switch 72 side, and is micro when the device main body 20 is slid and attached to the cradle 30 in which the administration port 40 is installed. Press the switch 72 directly. The projecting member 74 is selected from those that can reliably transmit the input from the switch pressing member 71 according to the detection method of the micro switch 72. In order to facilitate the transfer of stress from the switch pressing member 71 to the microswitch 72, the projecting member 74 may be made of a material harder than the intermediate member 73. Alternatively, the protruding member 74 and the micro switch 72 may be used as a contact sensor using a known detection method.

<Procedure for using the drug solution administration device 2 and control method for the drug solution administration device 2>
The procedure for using the drug solution administration device 2 having the configuration described above is carried out in the same manner as the procedure for using the drug solution administration device 1 of the first embodiment. Therefore, the description here will be omitted.

<Control method of drug solution administration device 2>
The control method of the drug solution administration device 2 according to the second embodiment is carried out in the same manner as the control method of the drug solution administration device 1 of the first embodiment. However, the determination as to whether or not the liquid feeding pipe 22a and the cannula portion 41 are normally connected, which is carried out in step S102 described with reference to the flowchart of FIG. 10, is performed as follows. That is, when the micro switch 72 is turned on, the main body calculation unit 16 determines that the connection is normally made (YES), and if the micro switch 72 is not turned on, the connection is not normally made (NO). to decide.

When a plurality of microswitches 72 are provided in the administration port 40, the main body calculation unit 16 is normally connected when all the microswitches 72 of each connection detection device 70 are turned on (YES). In other cases, it is determined that the connection is not normal (NO).

<Effect of the second embodiment>
In the drug solution administration device 2 of the second embodiment described above, the switch pressing member 71 is provided at the tip of the connection port 45 in the administration port 40, and the position of the device main body 20 facing the fitting portion 21c into which the connection port 45 is fitted. The micro switch 72 is provided on the surface. Therefore, the fitted state of the connection port 45 with respect to the fitting portion 21c can be directly detected by turning on / off the micro switch 72. Further, this makes it possible to detect the connection between the connecting needle tube 22b held by the fitting portion 21c and the cannula portion 41 communicating with the connecting port 45. Further, by providing a plurality of sets of switch pressing members 71 and a micro switch 72, it is possible to detect whether or not the connection port 45 is fitted in parallel with the fitting portion 21c.

As a result, as in the first embodiment, when the apparatus main body 20 is attached to the cradle 30 in which the administration port 40 is installed, the cannula portion 41 held in the administration port 40 and the connection extended from the reservoir 22 are connected. It is possible to detect a poor connection with the needle tube 22b and urge the user of the drug solution administration device 2 to reattach it. That is, the connection between the fitting end portion 48 and the connecting needle tube 22b can be detected in the vicinity of the connecting portion. As a result, in the drug solution administration device 2, it is possible to prevent the drug solution from leaking from the connection portion between the device main body 20 and the administration port 40, and to perform highly accurate drug solution administration.

1, 2, ... Chemical administration device 14 ... Main body output unit 15 ... Main body communication unit 16 ... Main body calculation unit 20 ... Device main body 21c ... Fitting part 22 ... Reservoir 22a ... Liquid delivery tube 22b ... Connection needle tube 30 ... Cradle 40 ... Administration port 41 ... Cannula unit 45 ... Connection port 50, 70 ... Connection detection device 51a ... Magnetic member 52a ... Magnetic sensor (detection unit)
60 ... Remote controller 63 ... Controller output unit 64 ... Controller communication unit 71 ... Switch pressing member 72 ... Micro switch (detection unit)

Claims

A reservoir filled with a chemical solution, a liquid feed pipe extending from the reservoir, and a calculation unit for controlling the discharge of the chemical solution from the reservoir are housed in a housing, and the tip of the liquid feed pipe is encapsulated. A device body that further has a fitting part that is exposed to the outside of the body,
A cradle that holds a cannula portion that is punctured and inserted under the skin and a connection port that has an fitting end portion that connects to the fitting portion.
A connection detection device that detects the connection between the mating portion and the connection port,
With
The calculation unit is a chemical solution administration device, which controls discharge of a chemical solution from the reservoir based on a signal from the connection detection device.
The first aspect of the present invention, wherein the calculation unit discharges the chemical solution from the reservoir when it is determined that the connection port has been fitted into the fitting unit based on a signal from the detection unit of the connection detection device. Drug administration device.
The connection detection device is
It has a detected portion provided at the fitting end portion of the connection port and a sensor as a detection portion provided in the peripheral region of the fitting portion or in any of the fitting portions.
The drug solution administration device according to claim 1 or 2, wherein the detected portion is provided at a position where the fitting portion is fitted.
The fitting end of the connection port is closed with a cap through which the liquid feed pipe can penetrate.
The drug solution administration device according to claim 3, wherein the detected portion is provided on the cap.
The drug solution administration device according to claim 3 or 4, wherein the detected portion is a magnetic material and the sensor is a magnetic sensor.
The drug solution administration device according to claim 5, wherein the calculation unit determines that the connection port is fitted into the fitting unit when the signal from the sensor reaches a preset threshold value.
The detected portion is a switch pressing member, and is
The detection unit is a micro switch that is pressed by the switch pressing member in a state where the connection port is fitted in the fitting portion.
The drug solution administration device according to claim 3.
The drug solution administration device according to claim 7, wherein the calculation unit determines that the connection port is fitted into the fitting portion when the micro switch is pressed.
The connection detection device has a plurality of the switch pressing members and a plurality of the micro switches provided corresponding to the respective switch pressing members.
The drug solution administration device according to claim 7 or 8, wherein the calculation unit determines that the connection port has been fitted into the fitting portion when all of the plurality of microswitches are pressed.
It is provided with an output unit that outputs an alarm according to an instruction from the calculation unit.
When the calculation unit determines that the connection port is not fitted in the fitting unit, the calculation unit indicates any one of claims 1 to 9 instructing the output unit to output an alarm. The drug solution administration device described.
The communication unit provided in the main body of the device and
A remote controller for setting control of chemical discharge from the reservoir via the communication unit is provided.
The remote controller includes an output unit that outputs an alarm.
When the calculation unit determines that the connection port is not fitted in the fitting unit, the communication unit instructs the remote controller to output an alarm from the output unit of the remote controller. Item 2. The drug solution administration device according to any one of Items 1 to 10.
A reservoir filled with a chemical solution, a liquid feed pipe extending from the reservoir, and a calculation unit for controlling the discharge of the chemical solution from the reservoir are housed in a housing, and the tip of the liquid feed pipe is encapsulated. A device body that further has a fitting part that is exposed to the outside of the body,
A cradle that holds a cannula portion that is punctured and inserted under the skin and a connection port that has an fitting end portion that connects to the fitting portion.
A connection detection device that detects the connection between the mating portion and the connection port,
With
A control method for a chemical solution administration device, wherein the calculation unit controls discharge of a chemical solution from the reservoir based on a signal from the connection detection device.
The drug solution administration device according to claim 12, wherein when it is determined that the connection port is fitted into the fitting portion based on a signal from the detection unit of the connection detection device, the drug solution is discharged from the reservoir. Control method.