JP6438742B2 - Chemical solution administration device - Google Patents

Description

  The present invention relates to a drug solution administration device used for administering a drug solution into a living body.

  As a device that administers a drug solution such as insulin, a portable drug solution administration device that administers a drug solution over time while attached to the skin of a user (patient) to be administered is known. In a drug administration device, as a dosing operation, a preset amount of drug solution is automatically and continuously administered to the patient, and in addition to this, a drug solution amount is added based on the patient's instructions in the case of meals, exercise, etc. can do. A patient can act with such a medicinal effect by appropriately administering an appropriate amount of the medicinal solution with such a medicinal solution administration device.

  By the way, when the administration operation is performed in a state where air is present in the chemical flow path inside the chemical liquid administration device, or when there is a delay from the start of the liquid delivery mechanism of the chemical administration device to the start of actual liquid delivery, Air may be injected into the living body, or it may become impossible to grasp the exact amount of the medical solution administered into the living body. For this reason, the patient needs to perform the filling operation before starting the administration operation. In the filling operation, the controller is operated in a state where the drug solution administration device is not mounted, and a drug solution amount slightly larger than the amount corresponding to the volume in the flow path of the drug solution administration device is supplied, or the liquid supply is continued, This is done by visually confirming that the chemical solution has been discharged from the chemical solution administration device to the outside.

For example, if the filling operation is mistakenly performed with the chemical solution administration device attached, not only air is injected into the living body, but it is not possible to grasp the accurate amount of the medical solution administered into the living body, When the liquid feeding is continued, there is a possibility that an excessive amount of the chemical solution is administered into the living body. Apart from the problems related to the filling operation as described above, in a general drug solution administration device, when the drug solution administration device is unintentionally detached from the living body during the administration operation, it is originally administered. There is a risk that the chemical solution to be leaked out of the living body and only a small amount of the chemical solution may be administered into the living body. In addition, there is a problem that the accurate amount of the chemical solution administered into the living body cannot be grasped. in the case of performing the dispensing operation state, there is a problem expensive chemical solution with leaked to the outside, grasp the exact chemical quantity that is administered in vivo is difficult.

  For this reason, in Patent Document 1, an injection unit that is attached to a living body and injects a chemical solution into the living body and a liquid supply unit that supplies the chemical solution to the injection unit are configured to be connectable to each other. And a device that informs the patient of the connection / separation state of the liquid delivery unit and prompts the administration of an appropriate amount of the drug solution.

International Publication No. 2009-016635

As described above, in the administration of the chemical solution by the chemical solution administration device, although a device for administering an appropriate amount of the chemical solution has been proposed , the patient did not notice the notification or could not fully understand the content of the notification In such a case, there is a possibility that an adequate amount of the drug solution is not administered and sufficient drug efficacy cannot be obtained.

The present invention prevents a drug solution from being mistakenly administered into a living body during a filling operation , and a user (patient) obtains sufficient medicinal effects safely by administering an appropriate amount of the drug solution into the living body. It is an object of the present invention to provide a chemical solution administration device that can perform such a process.

The medicinal-solution administration device according to the present invention includes an injecting portion that includes an injecting member that injects a medicinal solution into a living body, a holding member that holds the injecting member on the living body, and a flow for feeding the medicinal solution to the injecting member a liquid feed member including a road, has a syringe that is storing the chemical solution, and a liquid feed device for feeding the liquid medicine to the liquid supply member, the connecting the injection unit separable liquid feed portion And a filling operation for filling the flow path of the liquid feeding member with the liquid medicine stored in the syringe in a state in which the injection operation and the liquid feeding section are separated from each other. An instruction unit for instructing operation to the liquid feeder, a detection unit for detecting whether the instruction unit and the holding member are within a predetermined range, and a control unit for controlling the operation of the liquid feeder. And the control unit causes the indicating unit and the holding member to be interchanged by the detecting unit. If it is detected to be within a predetermined range, to allow the filling operation of the liquid medicine of the feeding device.

  According to the chemical solution administration device of the present invention, when the controller and the holding member are detected to be within a predetermined range, the controller permits the chemical solution filling operation of the liquid feeder. It is possible to prevent unintentional administration of an excessive drug solution into the body, prevent air from being injected into the living body, and accurately grasp the amount of the drug solution administered into the living body.

  In addition, if the control unit permits the filling operation while the detection unit detects that the instruction unit and the holding member are within a predetermined range, for example, the user (patient) of the drug solution administration device instructs It is possible to prevent the filling operation from being started after the injection member is held on the living body by the holding member separated from the instruction unit after the portion and the holding member are once brought close to each other.

  In addition, when the detection unit detects that the instruction unit and the holding member are within a predetermined range, if the control unit starts the filling operation, the user (patient) of the drug solution administration device operates the instruction unit. The filling operation can be automatically started.

  Further, if the detection unit is provided on the surface of the holding member facing the living body, the filling operation can be permitted in a state where the holding member is securely removed from the living body surface.

  Further, if the detection unit is provided with a first detection member that generates magnetism and a first detection member that detects the magnetism of the first detection member corresponding to the instruction unit and the liquid feeding unit, it is very simple. With this configuration, for example, even if the first detection member and the first detection member are not necessarily in contact with each other, it is possible to reliably detect the connection / separation between the instruction unit and the holding member. Further, for example, by selecting the first detection member having a predetermined magnetic force, it is possible to arbitrarily set a detectable distance as to whether the instruction unit and the holding member are within a predetermined range.

  In addition, if a second detection member having a predetermined electric resistance and a second detection member for detecting the electric resistance of the second detection member are provided corresponding to the instruction unit and the liquid feeding unit, it is very reliable. With an expensive and inexpensive configuration, it is possible to reliably detect whether the pointing portion and the holding member are within a predetermined range.

  In addition, if the plurality of holding members are respectively provided with second detection members having different electric resistances, the user (patient) of the drug solution administration device intends to reuse the holding member or uses the holding member in advance. Infection etc. can be prevented by restricting the use when trying to use more than the number of times.

It is a perspective view which shows the chemical | medical solution administration apparatus which concerns on embodiment. It is a perspective view which decomposes | disassembles and shows each structure of the chemical | medical solution administration apparatus of FIG. It is a perspective view which decomposes | disassembles and shows the injection | pouring part of the chemical | medical solution administration apparatus of FIG. It is sectional drawing which shows the structure concerning the flow path of a chemical | medical solution in the state which the injection | pouring part and liquid feeding part of the chemical | medical solution administration apparatus of FIG. 1 have connected. It is a figure which shows the flow of filling operation permission in case the instruction | indication part and cradle which concern on control of the chemical | medical solution administration apparatus of FIG. 1 are in a predetermined range mutually. It is a schematic diagram which shows the filling operation | movement of the chemical | medical solution administration apparatus in the control shown in FIG. It is a perspective view which decomposes | disassembles and shows the injection | pouring part of the chemical | medical solution administration apparatus which concerns on the modification of embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the dimension ratio of drawing is exaggerated on account of description, and may differ from an actual ratio. 1 to 4 and FIG. 7, the X, Y, and Z arrows are used to indicate the orientation of the drug solution administration device. The direction of the arrow represented by X indicates the short direction X of the drug solution administration device. The direction of the arrow represented by Y indicates the longitudinal direction Y of the drug solution administration device. The direction of the arrow represented by Z indicates the thickness direction Z of the drug solution administration device.

  The drug solution administration device (insulin pump 100) will be described.

  First, the configuration of the insulin pump 100 will be described with reference to FIGS.

  FIG. 1 is a perspective view showing an insulin pump 100 according to the embodiment. FIG. 2 is an exploded perspective view showing the components of the insulin pump 100 of FIG. FIG. 2 (A) shows the insulin pump 100 from the upper surface side with an infusion disposable part 110 disposed on the left side in the drawing. FIG. 2B shows the insulin pump 100 from the lower surface side facing the living body surface by disposing the infusion disposable part 110 on the right side in the drawing. FIG. 3 is an exploded perspective view showing the infusion disposable part 110 of the insulin pump 100 of FIG. FIG. 4 is a cross-sectional view showing a configuration relating to the flow path of insulin S in a state where the infusion disposable part 110 and the liquid delivery disposable part 120A of the insulin pump 100 of FIG. 1 are connected.

  Insulin pump 100 includes an infusion unit (corresponding to infusion dispensing unit 110), a liquid feeding unit 120 (corresponding to liquid feeding disposable unit 120A and a liquid feeding reuse unit 120B), an instruction unit (corresponding to controller 130), detection unit 140, and A control unit 150 is included.

  The injection disposable unit 110 injects a drug solution (corresponding to insulin S) into the living body.

  The injection disposable part 110 includes an injection member (corresponding to the cannula 111), a cradle 112, a puncture needle 113, and a housing 114. The injection disposable unit 110 is configured to be discarded without being reused after the completion of the injection of insulin S over several days from the viewpoint of hygiene.

  The cannula 111 injects a drug solution (corresponding to insulin S) into the living body. As shown in FIGS. 2B and 3, the cannula 111 is connected to the housing 114 and passes through the introduction hole 112 a of the cradle 112. The cannula 111 is made of, for example, a resin material such as polyurethane, nylon, ethylene-tetrafluoroethylene copolymer (ETFE), and is formed in a hollow cylindrical shape. As shown in FIG. 4, the cannula 111 is inserted into the living body by being punctured into the living body together with the puncture needle 113 in a state where the puncture needle 113 is passed through the lumen. The cannula 111 becomes a channel for injecting insulin S into the living body when the puncture needle 113 is removed from the lumen.

  The cradle 112 holds the cannula 111 in the living body. That is, the cradle 112 is attached to the biological surface and fixes the position of the cannula 111. The cradle 112 is made of a material having flexibility so as to be along the biological surface, and is formed in a rectangular shape. One surface of the cradle 112 is coated with an adhesive so as to be in close contact with the living body surface, and further, a peeling member (not shown) for preventing the adhesive from being dried is covered thereon. When the cradle 112 is attached to the living body surface, the peeling member is peeled off from the surface of the adhesive. A housing 114 is connected to the other surface of the cradle 112.

  The puncture needle 113 is made of, for example, a metal such as stainless steel, aluminum, aluminum alloy, titanium, titanium alloy, and the like, as shown in FIG. 4, a sharp blade surface is formed at the tip so that the living body can be punctured. Has been. When the puncture needle 113 is removed after the puncture needle 113 is pierced into the living body with the puncture needle 113 penetrating through the lumen of the cannula 111, the insulin S The sealed state of the flow path 114f is maintained. The casing 114 integrally holds the cannula 111, the cradle 112, and the puncture needle 113, and is connected to the liquid feeding disposable part 120A.

  As shown in FIG. 4, the casing 114 is provided with a cannula 111 and a puncture needle 113 in a connected part 114 a that is connected to a connecting part 124 a of a liquid delivery disposable part 120 </ b> A described later. The connected part 114a is connected to the connecting part 124a of the liquid delivery disposable part 120A, so that the liquid delivery pipe 121 penetrates and a flow path 114f of insulin S extending from the liquid delivery pipe 121 to the cannula 111 is formed. In the connected portion 114a, the puncture needle 113 is removed, and the sealed state of the flow path 114f is maintained by the filling member 114d that seals the opening. Similarly, in the connected portion 114a, the flow path 114f is kept sealed by the filling member 114e that seals the opening of the liquid feeding pipe 121.

  On the inner surface of the casing 114, a guide portion 114c that is connected to the disposable portion casing 124 of the liquid feeding disposable portion 120A is formed. The guide portion 114 c is formed from a linear protrusion along the longitudinal direction Y. As shown in FIGS. 2A and 2B, a contacted portion 114b provided on one surface of the connected portion 114a of the housing 114 is provided on one surface of the connecting portion 124a of the disposable housing 124. It faces the contact portion 124b.

  The liquid feeding unit 120 includes a liquid feeding disposable unit 120A and a liquid feeding reuse unit 120B, and delivers insulin S to the infusion disposable unit 110.

  The liquid delivery disposable part 120A and the liquid delivery reuse part 120B are configured to be connected to and separated from the injection disposable part 110.

  120 A of liquid feeding disposable parts contain the liquid feeding member (equivalent to the liquid feeding pipe | tube 121), the liquid feeder 122, the battery 123, and the disposable part housing | casing 124. FIG. 120 A of liquid delivery disposable parts are comprised so that it may discard, without reusing after the liquid supply of the insulin S over several days is completed from a hygiene side.

  The liquid feeding tube 121 sends insulin S to the cannula 111 via the flow path 114f. The liquid feeding pipe 121 is made of, for example, a metal such as stainless steel, aluminum, an aluminum alloy, titanium, or a titanium alloy, or a resin material such as polyurethane, nylon, or ethylene-tetrafluoroethylene copolymer (ETFE), and distributes insulin S. It is formed in the tubular shape provided with the flow path to be made. One end of the liquid feeding pipe 121 is in communication with the liquid feeder 122. As shown in FIG. 4, the liquid feeding pipe 121 has a flow path 114 f where the other end reaches the cannula 111 when the disposable section 124 of the liquid feeding disposable section 120 </ b> A is connected to the casing 114 of the injection disposable section 110. Is penetrated by. The insulin S flow path 114 f is kept sealed by the filling member 114 e provided in the disposable housing 124 and through which the liquid feeding pipe 121 passes.

  The liquid feeder 122 feeds the stored insulin S to the liquid feeding pipe 121. The liquid feeder 122 includes a syringe 122A that stores insulin S therein, a pusher 122B that feeds the insulin S in the syringe 122A to the liquid feed pipe 121, and a drive motor 122C that pushes the pusher 122B.

  The battery 123 supplies power to the drive motor 122C of the liquid feeder 122.

  The disposable section housing 124 integrally holds the liquid feeding pipe 121, the liquid feeder 122, and the battery 123, and the injection disposable section 110 is connected thereto. Disposer section casing 124 introduces liquid feeding pipe 121 into connecting section 124 a that is connected to casing 114 of injection disposable section 110 on the inner surface thereof. On the outer surface of the disposable section housing 124, a guide section 124c that is connected to the housing 114 of the injection disposable section 110 is formed. The guide part 124 c is formed from a linear groove along the longitudinal direction Y.

  The liquid feeding reuse unit 120B includes a reuse unit housing 125. The liquid feeding reuse unit 120B reuses the next insulin S liquid feeding after the completion of the insulin S feeding over several days. The reuse unit casing 125 is detachably connected to the disposable unit casing 124 so as to protect each component of the liquid delivery disposable unit 120A. The reuse unit housing 125 is equipped with a control circuit 151 of the control unit 150 that controls the operation of the liquid feeder 122 on the inner surface thereof. The reuse unit casing 125 includes a contact (not shown) that is electrically connected to the battery 123 when connected to the disposable unit casing 124, and power is supplied to the control unit 150 through the contact.

  Note that when the drive motor 122C is disposed in the liquid feed reuse unit 120B and the liquid feed disposable unit 120A and the liquid feed reuse unit 120B are connected, the rotation of the drive motor 122C is rotated by a gear or the like and the pusher of the liquid feed disposable unit 120A. It can also be set as the structure which provided the mechanism converted into the press of 122B.

  The controller 130 is used by the user (patient) to instruct the liquid feeding unit 120 to perform the filling operation or administration operation of the insulin S, and includes the input button 131, the monitor 132, the control circuit 133, the battery 134, and the housing 135. Contains.

  The input button 131 transmits instructions to the control circuit 133 such as ON / OFF of the power supply of the insulin pump 100, insulin S filling operation and administration operation by the user (patient).

  The monitor 132 displays the content of the instruction from the user (patient) via the input button 131 and the operating state of the insulin pump 100.

  The control circuit 133 is composed of an integrated circuit. The control circuit 133 includes a microcomputer and a wireless communication device. The microcomputer instructs the control circuit 151 to operate the insulin pump 100, or stores a control program for controlling a magnetic sensor 142 of the detection unit 140 described later, a CPU for controlling based on the control program, and an instruction A RAM for temporarily storing the contents is provided.

  The battery 134 supplies driving power to the control circuit 133 and the monitor 132. The casing 135 has an input button 131 and a monitor 132 arranged on the front side, and houses a control circuit 133 and a battery 134 therein.

  The detection unit 140 detects whether the controller 130 and the cradle 112 are within a predetermined range.

  The detection unit 140 includes a second detection member (corresponding to the magnet 141) and a second detection member (corresponding to the magnetic sensor 142).

  The magnet 141 generates magnetism. The magnet 141 is embedded in the groove portion of the guide portion 114 c of the casing 114 of the injection disposable portion 110. The magnet 141 is sandwiched between the casing 114 and the cradle 112. That is, the magnet 141 is provided close to the surface of the cradle 112 facing the living body.

  The magnetic sensor 142 includes a circuit including a Hall element, and detects the magnetism of the magnet 141. The magnetic sensor 142 is provided on the back side of the controller 130 so as to face the monitor 132. For example, the detection unit 140 detects magnetism from the magnet 141 when the controller 130 and the cradle 112 are in contact with each other.

  The detection unit 140 may be configured by a piezoelectric element that converts a pressing force into an electric signal, or a photocoupler that combines light emitting and light receiving elements.

  The control unit 150 controls the insulin pump 100 in an integrated manner.

  In particular, the control unit 150 controls liquid feeding by the liquid feeder 122.

  The control unit 150 includes a control circuit 151. The control circuit 151 is formed of an integrated circuit and is mounted on the inner surface of the liquid feeding reuse unit 120B. The control circuit 151 includes a microcomputer and a wireless communication device.

  The microcomputer of the control circuit 151 temporarily stores the ROM storing a control program for controlling the liquid feeding of the liquid feeder 122, the CPU for controlling the liquid feeder 122 based on the control program, and the driving amount of the liquid feeder 122. A RAM for storing data is provided. The wireless communication device is used for transmitting / receiving information to / from the controller 130 and the detection unit 140.

  Next, the filling operation of the insulin pump 100 will be described with reference to FIGS.

  FIG. 5 is a diagram showing a flow of filling operation permission when the controller 130 and the cradle 112 related to the control of the insulin pump 100 in FIG. 1 are within a predetermined range. FIG. 6 is a schematic diagram showing a filling operation of the insulin pump 100 in the control shown in FIG.

  The control circuit 133 of the controller 130 permits the filling operation by the liquid feeder 122 while the detection unit 140 detects that the controller 130 and the cradle 112 are within a predetermined range. Thereby, the control circuit 151 starts the filling operation by the liquid feeder 122 when the detection unit 140 detects that the controller 130 and the cradle 112 are within a predetermined range. On the other hand, when the detection unit 140 cannot detect that the controller 130 and the cradle 112 are within a predetermined range, for example, the state in which the liquid feeding unit 120 is connected to the injection disposable unit 110 attached to the living body by the cradle 112 In, the filling operation is limited. That is, the filling operation cannot be performed in a state where insulin S can be administered to the living body.

  Such control can prevent the user (patient) of the insulin pump 100 from becoming hypoglycemic due to the excessive administration of insulin S. In addition, it is possible to prevent the injection of air into the living body and to grasp the accurate amount of insulin S administered into the living body. When the control circuit 133 restrict | limits the filling operation by the liquid feeder 122, it is good also as a structure which alert | reports by an audio | voice or light.

  Specifically, when the user (patient) operates the input button 131 to perform the filling operation via the controller 130, the control as shown in FIG. 5 is executed.

  The detection unit 140 is configured such that the controller 130 and the cradle 112 are within a predetermined range by the magnet 141 disposed in the injection unit (injection disposable unit 110) and the magnetic sensor 142 disposed in the instruction unit (controller 130). Detect that. In this state, the controller 130 issues an insulin S filling operation command from the microcomputer of the control circuit 133 to the wireless communication device. Information is transmitted between the wireless communication device of the control circuit 133 and the microcomputer by SPI (Serial Peripheral Interface) communication.

  The wireless communication device of the control circuit 133 that has received the filling operation command transmits an RF signal (filling operation command) to the wireless communication device of the control circuit 151 attached to the liquid feeding unit 120 (liquid feeding reuse unit 120B). To do. Information is transmitted between the controller 130 and the control circuit 151 of the liquid feeding reuse unit 120B by wireless communication.

  The wireless communication device of the control circuit 151 that has received the RF signal (filling operation command) transmits the filling operation command to the microcomputer of the control circuit 151. The microcomputer of the control circuit 151 that has received the filling operation command causes the liquid feeder 122 to perform the filling operation of the insulin S into the liquid feeding pipe 121.

  That is, the control circuit 151 of the control unit 150 performs the insulin S filling operation of the liquid feeder 122 in a state where the controller 130 and the cradle 112 are in contact with each other, as shown in FIG. To control. In FIG. 6, a part of the insulin S fed to the liquid feeding tube 121 is dripped to the outside from the distal end side of the liquid feeding tube 121. The dropped insulin S is not administered in vivo.

  As described above, according to the insulin pump 100 according to the embodiment, when it is detected that the controller 130 and the cradle 112 are within a predetermined range, the control unit 150 fills the insulin S in the liquid feeder 122. Since the operation is permitted, it is possible to prevent unintentional administration of the insulin S into the living body, to prevent the injection of air into the living body, and to grasp the accurate amount of the drug solution administered into the living body.

  Furthermore, since the control unit 150 is allowed to perform a filling operation while the detection unit 140 detects that the controller 130 and the cradle 112 are within a predetermined range, for example, the user (patient) may It is possible to prevent the filling operation from being started after the injection member is held in the living body by the cradle 112 separated from the controller 130 after the 130 and the cradle 112 are brought close to each other.

  Furthermore, since the control unit 150 starts the filling operation when the detection unit 140 detects that the controller 130 and the cradle 112 are within a predetermined range, the user (patient) of the insulin pump 100 can control the controller 130. The filling operation can be automatically started.

  Furthermore, since the detection unit 140 is provided on the surface of the cradle 112 facing the living body, the filling operation is permitted in a state where the cradle 112 is reliably removed from the living body surface.

  Furthermore, since the detection unit 140 is provided with a magnet 141 for generating magnetism and a magnetic sensor 142 for detecting the magnetism of the magnet 141 corresponding to the controller 130 and the liquid feeding unit 120, the detection unit 140 has a very simple configuration. For example, even if the magnet 141 and the magnetic sensor 142 are not necessarily in contact with each other, the connection / separation of the controller 130 and the cradle 112 can be reliably detected. Further, for example, by selecting the magnet 141 having a predetermined magnetic force, it is possible to arbitrarily set a detectable distance whether the controller 130 and the cradle 112 are within a predetermined range.

<Modification>
A modified liquid medicine administration device (insulin pump 200) will be described.

  The insulin pump 200 is different from the insulin pump 100 according to the above-described embodiment in that the detection unit 240 is configured by an electric resistance detection method. In the modification of the embodiment, the same reference numerals are added to those having the same configuration as that of the above-described embodiment, and the duplicate description is omitted.

  The configuration of the insulin pump 200 will be described with reference to FIG.

  FIG. 7 is an exploded perspective view showing the infusion disposable part 110 of the insulin pump 200 according to a modification of the embodiment.

  The detection unit 240 includes a second detection member (corresponding to the resistance element 241) and a second detection member (corresponding to a resistance measuring device).

  The resistance element 241 has two element side terminal electrodes, and has a predetermined electric resistance between the element side terminal electrodes. The resistance element 241 is installed on a peeling member that covers the adhesive on the side to be attached to the biological surface of the cradle 112. That is, the two element-side terminal electrodes of the resistance element 241 are provided exposed on the surface of the cradle 112 facing the living body.

  The resistance measuring device is provided on the back side of the controller 130 so as to oppose the monitor 132, and exposes two measuring device side terminal electrodes on the outer surface. A weak known current flows between the two measuring instrument side terminal electrodes, and the voltage value generated between the two measuring instrument side terminal electrodes and the known current value are connected to the measuring instrument side terminal electrode. The resistance value of the resistance element is measured. For example, the detection unit 240 detects whether the controller 130 and the cradle 112 are in contact with each other based on the electric resistance of the resistance element 241. When the two element side terminal electrodes of the resistance element 241 come into contact with the two measuring instrument side terminal electrodes of the resistance measuring device, a weak known current flows between the element side terminal electrodes of the resistance element 241. The detection unit 240 compares the voltage value generated between the measuring instrument side terminal electrodes, the resistance value measured from the known current value, and the value of the electrical resistance of the resistance element 241, and if they match, the controller 130 and the cradle 112 Detect contact. On the other hand, when the resistance element 241 is separated from the resistance measurement device, the detection unit 240 detects the separation between the controller 130 and the cradle 112 because the resistance value measured by the resistance measurement device does not match the electrical resistance value of the resistance element 241. To do.

  As described above, according to the insulin pump 200 according to the modification of the embodiment, the detection unit 140 includes the resistance element 241 having the predetermined electrical resistance and the resistance measuring device that detects the electrical resistance of the resistance element 241 as the controller. Since it is provided corresponding to 130 and the liquid feeding unit 120, it is possible to reliably detect whether the controller 130 and the cradle 112 are within a predetermined range with a highly reliable and inexpensive configuration.

  Further, since the plurality of cradles 112 are provided with resistance elements 241 having different electric resistances, when the user (patient) of the insulin pump 200 tries to reuse the cradle 112 or uses the cradle 112 in advance. Infection etc. can be prevented by restricting the use when trying to use more than the number of times.

  As mentioned above, although the chemical | medical solution administration apparatus based on this invention was demonstrated through embodiment and a modification, these forms can be suitably changed based on the content described in the claim.

  For example, the drug solution administration device is not limited to the form in which insulin S is injected into the living body, but may be a form that administers a drug solution having a medicinal effect such as analgesia or anesthesia in the living body.

100, 200 insulin pump (medical solution administration device),
110 Injection disposable part (injection part),
111 cannula (injection member),
112 cradle,
112a introduction hole,
113 puncture needle,
114 housing,
114a to-be-connected part,
114b contacted part,
114c guide,
114d, 114e filling member,
114f flow path,
120 liquid feeding part,
120A liquid feeding disposable part (liquid feeding part),
120B Liquid Reuse / Reuse Department (Liquid Feed)
121 liquid supply pipe (liquid supply member),
122 liquid feeder,
122A syringe,
122B pusher,
122C drive motor,
123 battery,
124 Disposer housing,
124a connecting part,
124b contact part,
124c guide section,
125 Reuse department housing,
130 Controller (instruction part),
131 Input button,
132 monitors,
133 control circuit,
134 battery,
135 housing,
140, 240 detector,
141 magnet (first detection member),
142 magnetic sensor (first detection member),
241 resistance element (second detection member),
150 control unit,
151 control circuit,
S insulin,
X Short direction of insulin pump,
Y Longitudinal direction of insulin pump,
Z Thickness direction of insulin pump.

Claims (7)

An injection part comprising an injection member for injecting a chemical into a living body, and a holding member for holding the injection member in the living body;
A liquid feeding member having a flow path for feeding the chemical liquid to the injection member, a syringe having a syringe storing the chemical liquid, and a liquid feeder for feeding the chemical liquid to the liquid feeding member , A liquid feeding part that can be connected to and separated from the injection part ;
An administration operation for administering the medicinal solution into the living body and a filling operation for filling the flow channel of the liquid feeding member with the medicinal solution stored in the syringe in a state where the injection part and the liquid feeding part are separated. An instruction unit for instructing the liquid feeder ;
A detection unit for detecting whether the instruction unit and the holding member are within a predetermined range;
A controller for controlling the operation of the liquid feeder,
The said control part is a chemical | medical solution administration apparatus which permits the filling operation | movement of the said chemical | medical solution of the said liquid feeder, when the said detection part detects that the said instruction | indication part and the said holding member are in the predetermined range mutually.
  The said control part permits the filling operation | movement by the said liquid feeder, while the said detection part has detected that the said instruction | indication part and the said holding member are in the predetermined range mutually. Chemical solution administration device.   3. The control unit according to claim 1, wherein the control unit starts a filling operation by the liquid feeder when the detection unit detects that the instruction unit and the holding member are within a predetermined range. Chemical solution administration device.   The drug solution administration device according to claim 1, wherein the detection unit is provided on a surface of the holding member facing the living body.   The detection unit includes a first detection member that generates magnetism and a first detection member that detects magnetism of the first detection member, corresponding to the instruction unit and the liquid feeding unit. Item 5. The drug solution administration device according to any one of Items 1 to 4.   The detection unit includes a second detection member having a predetermined electric resistance and a second detection member that detects the electric resistance of the second detection member, corresponding to the instruction unit and the liquid feeding unit. Moreover, the chemical | medical solution administration apparatus of any one of Claims 1-5.   The medicinal-solution administration device according to claim 6, wherein the plurality of holding members respectively include the second detection members having different electric resistances.