JP2019154714A - Injector and injection management system using the same - Google Patents

Abstract

To automate (or semi-automate) self-injection records.SOLUTION: An injector 10 includes a syringe 11, a plunger 12, and a sensor 13 that outputs a detection signal OUT corresponding to a relative motion between the syringe 11 and the plunger 12. The sensor 13 includes a magnet 13a provided on one (e.g., plunger head 12a) of the syringe 11 and the plunger 12 and a hall IC13b provided on the other (e.g., flange 11a) of the syringe 11 and the plunger 12. The hall IC13b is preferably a bipolar detection type. The hall IC13b may be a digital output method type or an analog output method type. The injector 10 further includes a connector 14 to/from which a cable 70 for establishing a connection with a recorder 20 is attached/detached. An injection management system 1 includes the injector 10, the recorder 20, an information processing terminal 30, and a cloud server 40.SELECTED DRAWING: Figure 1

Description

  The invention disclosed in the present specification relates to a syringe and an injection management system using the syringe (= system for automatically recording the execution of self-injection).

  Conventionally, there is no system for automatically recording the execution of self-injection, and when the patient has completed the self-injection, the implementation record (implementation date and time, injection site, comment) has been written by hand.

  As an example of the related art related to the above, Patent Document 1 that assists the medicine injection operation can be cited.

International Publication No. 2010/100883

  However, when the patient hand-writes the implementation record, there is a risk that the description is forgotten or wrong, and in the worst case, no recording may be performed. Moreover, the handwriting of the implementation record has become a burden of patient work. In addition, if the patient forgets to bring an implementation record at the time of medical examination by the attending physician, the attending physician may not be able to perform appropriate treatment.

  Thus, in the current situation where patients are performing self-injection records, doctors have to believe in the information provided by patients and there is no means to obtain objective information. There was a risk of delaying recovery and unnecessary medical expenses.

  In view of the above-mentioned problems found by the inventors of the present application, the invention disclosed in the present specification is a syringe capable of automating (or semi-automating) a self-injection record, and It aims at providing the used injection management system.

  The syringe disclosed in this specification includes a syringe that holds a liquid medicine to be injected, a plunger that pushes out the liquid medicine from the syringe, and a detection signal corresponding to the relative motion of the syringe and the plunger. And a sensor that outputs to (a first configuration).

  In the syringe having the first configuration, the sensor includes a magnet provided on one of the syringe and the plunger, and a Hall IC provided on the other of the syringe and the plunger (first 2).

  In the syringe having the second configuration, the Hall IC may have a bipolar detection type configuration (third configuration).

  In the syringe having the second configuration, the Hall IC may be configured as a single pole detection type (fourth configuration).

  In the syringe having the second to fourth configurations, the Hall IC may have a digital output configuration (fifth configuration).

  In the syringe having the second to fourth configurations, the Hall IC may have an analog output type configuration (sixth configuration).

  The syringe having any of the first to sixth configurations further includes a connector to which a cable for establishing connection with the recorder for recording the detection signal is attached (seventh configuration). It is good to.

  Further, the injection management system disclosed in the present specification performs injection by automatically assigning date and time information to the syringe having any one of the first to seventh configurations and the detection signal input from the syringe. And a recorder that generates data (eighth configuration).

  In addition, the injection management system which consists of said 8th structure further has an information processing terminal which receives the manual input of the incidental information by the user of the said syringe itself, and expands the said injection implementation data input from the said recorder ( The ninth configuration may be used.

  In the injection management system having the ninth configuration, the incidental information may be configured to be selectively input from options prepared in advance (tenth configuration).

  The injection management system having the ninth or tenth configuration may be configured to further include a cloud server (the eleventh configuration) that stores the injection execution data expanded by the information processing terminal.

  In addition, the sensor device disclosed in this specification includes a sensor support portion to which a sensor IC is fixed, and a sensor moving portion that changes a relative position with respect to the sensor IC and affects an output value of the sensor IC. A recording unit that records the usage status of the sensor unit that automatically gives date and time information to the output information of the sensor IC, and a data transmission unit that transmits and displays the information of the recording unit to the display unit, (The twelfth configuration).

  According to the invention disclosed in the present specification, it is possible to provide a syringe capable of automating (or semi-automating) an execution record of self-injection, and an injection management system using the same.

The figure which shows the whole structure of an injection management system Diagram showing an example of the connector configuration The figure which shows the 1st structural example of a sensor. The figure which shows the 2nd structural example of a sensor. The figure which shows an example of the execution screen of an injection management application The figure which shows one structural example of a magnetic sensor Diagram showing an example of digital output operation Diagram showing an example of analog output operation The figure which shows an example at the time of assistance tool use

<Injection management system>
FIG. 1 is a diagram showing an overall configuration of an injection management system. The injection management system 1 in this figure includes a syringe 10, a recorder 20, an information processing terminal 30, and a cloud server 40.

  The syringe 10 is a medical instrument for injecting a medical solution into a patient's body, and includes a syringe 11, a plunger 12, a sensor 13, and a connector 14.

  The syringe 11 is a cylindrical member (outer cylinder) for holding a liquid medicine to be injected. A flange 11a is formed at one end of the syringe 11 (= the side where the plunger 12 is inserted), and when injection is performed (= when the plunger 12 is pushed into the syringe 11). The index finger and the middle finger are attached to the flange 11a. On the other hand, an injection needle (needle tube) and a protective cap are attached to the other end of the syringe 11.

  The plunger 12 is a movable cylindrical member (inner cylinder) inserted into the syringe 11 in order to push out the chemical solution from the syringe 11. A plunger head 12a is formed at one end of the plunger 12 (= the side far from the syringe 11), and a thumb is attached to the plunger head 12a when injection is performed. On the other hand, a gasket (not shown) for maintaining airtightness is attached to the other end of the plunger 12 (= the side in contact with the chemical solution inside the syringe 11).

  The sensor 13 generates a detection signal OUT corresponding to the relative motion between the syringe 11 and the plunger 12 (= operation for pushing the plunger 12 into the syringe 11), and outputs this to the recorder 20. Referring to this figure, the sensor 13 is provided in the hall IC 13b provided in the syringe 11 (for example, the flange 11a) and the plunger 12 (for example, the plunger head 12a) as an element for sensing the above-described relative motion. The detection signal OUT is generated by detecting the magnetic field (magnetism) generated by the magnet 13a with the Hall IC 13b.

  In addition, as the magnet 13a, a permanent magnet such as a ferrite magnet or a neodymium magnet can be suitably used. In particular, in order to reduce the size of the magnet 13a, a neodymium magnet having a strong magnetic force per volume is optimal.

  In order to make the Hall IC 13b less susceptible to the influence of a disturbance magnetic field, it is desirable to select a Hall IC 13b having a detection sensitivity as high as possible (having an operating magnetic flux density of mT order or more).

  Further, if priority is given to the ease of assembly of the syringe 10, the Hall IC 13b should be a bipolar detection type so that it is not necessary to manage the relative mounting direction (polarity of the detected magnetic field) of the magnet 13a and the Hall sensor 13b. That's fine. On the other hand, if priority is given to cost reduction of the Hall IC 13, the Hall IC 13b may be a single pole detection type.

  Further, the arrangement of the magnet 13a and the Hall IC 13b is not limited to this figure, and the positional relationship between them may be reversed. That is, the magnet 13 a can be provided in the syringe 11 and the Hall IC 13 b can be provided in the plunger 12. However, in view of the connection stability between the Hall IC 13b and the recorder 20, it can be said that the arrangement shown in FIG.

  The connector 14 is an electronic component to / from which a cable 70 for establishing a wired connection between the sensor 13 (particularly the board on which the Hall IC 13b is mounted) and the recorder 20 is established. The cable 70 is desirably designed to have a length, flexibility, and weight that do not interfere with the self-injection operation.

  In addition, since the syringe 10 is a disposable product discarded every time it is used, it is desirable that it is as cheap as possible. Therefore, it is desirable that only the sensor 13 is mounted on the syringe 10 and the recorder 20 is configured to be used a plurality of times as another device that can be attached to and detached from the syringe 10.

  The recorder 20 is a device that automatically gives date and time information (time stamp) to the detection signal OUT input from the syringe 10 via the cable 70 and generates injection execution data. For example, the recorder 20 and the RTC [real- time clock] 22, microcomputer 23, memory 24, and communication unit 25.

  The battery 21 is a power source for supplying power to each part of the recorder 20. As the battery 21, a button-type battery or the like can be suitably used. In addition, when the power supply is not provided in the syringe 10, it is good to supply electric power from the battery 21 to the Hall IC 13b via the cable 70.

  The RTC 22 operates in response to power supply from the battery 21 and acquires date / time information (year / month / day / hour / minute / second) for automatically giving the detection signal OUT.

  The microcomputer 23 automatically assigns date / time information to the detection signal OUT to generate injection execution data, which is recorded in the memory 24 or transmitted to the information processing terminal 30 via the communication unit 25. The microcomputer 23 may have a function (= sleep function) for starting the recorder 20 only when the recorder 20 is connected to the syringe 10.

  The memory 24 is a recording medium of injection execution data (= detection signal OUT with time stamp) generated by the microcomputer 23, and a microSD card that can be attached to and detached from the recorder 20 can be suitably used.

  The communication unit 25 is an interface for transmitting the injection execution data generated by the microcomputer 23 to the information processing terminal 30. As the communication protocol, a near field communication protocol such as Bluetooth (registered trademark) is preferably used. Can be used.

  The information processing terminal 30 accepts manual input of incidental information (physical condition at the time of injection, change in injection site, body temperature, injection site, comment, etc.) by the patient himself, and expands the injection execution data input from the recorder 20. A device such as a smartphone, a tablet, or a personal computer can be suitably used.

  The cloud server 40 is connected to the information processing terminal 30 via an information communication network such as the Internet. The injection execution data uploaded from the information processing terminal 30 (= injection execution data expanded using the information processing terminal 30) ). The injection execution data stored in the cloud server 40 can be arbitrarily accessed from the registered hospital 50 or the service support company 60.

<Operation>
Next, the operation of the injection management system 1 will be described. When the patient performs self-injection using the syringe 10, the plunger 12 is pushed into the syringe 11, so the magnet 13 a provided on the plunger 12 approaches the Hall IC 13 b provided on the syringe 11. Therefore, by detecting the magnetic field (magnetism) generated by the magnet 13a in the Hall IC 13b, the relative movement between the syringe 11 and the plunger 12 (= the operation of pushing the plunger 12 into the syringe 11) can be captured. It is possible to confirm the presence or absence.

  More specifically, when the patient performs self-injection using the syringe 10, a detection signal OUT indicating that fact is transmitted from the sensor 13 to the recorder 20. Receiving this, the recorder 20 automatically gives date / time information to the detection signal OUT to generate injection execution data, and performs at least one of automatic recording in the memory 24 and automatic transmission to the information processing terminal 30.

  When the injection execution data is transmitted from the recorder 20 to the information processing terminal 30, the information processing terminal 30 is necessary for making a diagnosis and a treatment plan by a doctor using an injection management application executed on the terminal. It is desirable to be able to easily input incidental information (physical condition at the time of injection, change in injection site, body temperature, injection site, comments, etc.).

  On the other hand, even when the patient cannot use the information processing terminal 30, the recorder 20 automatically records the injection execution data (= detection signal OUT with time stamp) generated by the microcomputer 23. The self-injection record can be semi-automated (the incidental information is recorded by hand).

  As described above, when the injection management system 1 is used, for example, every time a patient performs self-injection at home for treatment, the execution date and time is automatically and sequentially recorded as a history. Therefore, not only the trouble of the patient's own record of implementation is reduced, but also the omission of recording and the mistake of recording can be solved.

  In addition, for example, during regular medical examinations, the doctor in charge can objectively grasp the implementation status of self-injection, so that it is possible to optimally treat the patient.

  Further, when the information processing terminal 30 is connected to the cloud server 40, the doctor in charge of the hospital 50 can grasp the patient's condition before the examination based on the injection execution data stored in the cloud server 40. . Therefore, the doctor in charge can perform a medical examination after making sufficient advance preparation (for example, creating an effective treatment plan for the patient), and thus can perform an accurate medical examination in a short time.

  In addition, the doctor in charge of the hospital 50 needs the necessary information via the information processing terminal 30 (telephone, e-mail, SNS [social networking service] message, chat, etc.) based on the injection execution data stored in the cloud server 40. Support information can be communicated to patients. Therefore, it is possible to support patient health in a timely and efficient manner.

  Further, the person in charge of the service support company 60 can know the state of self-injection and the state of side effects by analyzing the injection execution data stored in the cloud server 40. Therefore, by grasping safety and extracting business issues, it is possible to improve the reliability of the product (= syringe 10) and improve the business.

<Connector>
FIG. 2 is a diagram illustrating a configuration example of the connector 14. The connector 14 of this configuration example is an electronic component that is attached to the substrate on which the Hall IC 13b is mounted. For example, the connector 14 can be easily attached / detached with a connector attaching / detaching portion 71 provided at the tip of the cable 70 or the like. If the shape of the connector 14 and the S / N setting of the magnet are appropriately designed, the cable 70 can be easily attached and detached, and erroneous connection of the cable 70 can be prevented.

<Sensor (first configuration example)>
FIG. 3 is a diagram illustrating a first configuration example of the sensor 13. In the sensor 13 of this configuration example, when the patient performs self-injection using the syringe 10 (= when the plunger 12 is pushed into the syringe 11), the magnet 13a provided on the plunger head 13a is provided on the flange 11a. The Hall IC 13b approaches the package surface from directly above. When such a configuration is adopted, the Hall IC 13b detects the magnetic field generated by the magnet 13a when the distance L1 between the magnet 13a and the Hall IC 13b becomes several mm. Thus, it is desirable to arrange the magnet 13a and the Hall IC 13b so as to face each other.

<Sensor (second configuration example)>
FIG. 4 is a diagram illustrating a second configuration example of the sensor 13. In the sensor 13 of this configuration example, when the patient performs self-injection using the syringe 10, the magnet 13a provided on the shaft portion of the plunger 13 is against the package surface of the Hall IC 13b provided on the flange 11a. Approach from the horizontal direction. Even when such a configuration is adopted, the Hall IC 13b detects the magnetic field generated by the magnet 13a when the distance L2 between the magnet 13a and the Hall IC 13b reaches several mm.

<Injection management application>
FIG. 5 is a diagram illustrating an example of an execution screen of an injection management application that is installed and executed on the information processing terminal 30 (smart phone or tablet in this figure). When the patient executes the injection management application, the touch panel 31 of the information processing terminal 30 includes a date and time recording box 32, a physical condition recording box 33, a change recording box 34, a body temperature recording box 35, a part recording box 36, a comment recording box 37, An execution screen including the recording button 38 is displayed.

  In the date / time recording box 32, the date / time information (= the date and time of self-injection) included in the injection execution data from the recorder 20 is automatically input.

  In the physical condition recording box 33, the physical condition at the time of the injection is input by the patient's own hand as one of the incidental information for expanding the injection execution data. It should be noted that the physical condition record box 33 is “strong”, “weak”, “none” with respect to physical conditions at the time of injection, such as “cough / cough”, “shortness of breath”, “chest pain”, etc. It is desirable to use a pull-down menu or a drop-down menu so that the patient can selectively input from “)”.

  In the change record box 34, the change of the injection site is input by the patient's own hand as one of the incidental information for expanding the injection execution data. Note that the change record box 34 allows the patient to selectively change the injection site from previously prepared options (for example, “slightly red”, “pretty red”, “painful”, “swelled”, etc.). It is desirable to use a pull-down menu or a drop-down menu so that input is possible.

  In the body temperature recording box 35, the body temperature at the time of injection is input by the patient's own hand as one of the incidental information for expanding the injection execution data. The body temperature recording box 35 allows the patient to selectively input the body temperature at the time of injection from options prepared in advance (for example, in increments of 0.1 ° C. from 35.0 ° C. to 42.0 ° C.). It is desirable to use a pull-down menu or a drop-down menu. When using a thermometer that can be linked by Bluetooth (registered trademark), it is desirable that data is automatically uploaded.

  In the part record box 36, the injection part is input by the patient's own hand as one of the supplementary information for expanding the injection execution data. The site record box 36 has options (for example, “right thigh”, “left thigh”, “right hip”, “left hip”, “lower right abdomen”, “lower left abdomen”) prepared for the injection site. It is desirable that a pull-down menu or a drop-down menu is provided so that the patient can selectively input from “the upper arm”.

  In the comment recording box 37, comments other than the above are input by the patient's own hand as one of the incidental information for expanding the injection execution data. The comment recording box 37 is preferably a text box so that the patient can input a free comment.

  When the patient taps the record button 38, the incidental information manually input in the boxes 33 to 37 is recorded in association with the injection execution data. The uploading to the cloud server 30 may be performed when the recording button 38 is tapped, or may be performed according to a separate operation.

  By using such an injection management application, it is possible to facilitate manual input of incidental information (physical condition at the time of injection, change in injection site, body temperature, injection site, comments, etc.) by the patient.

  In addition, since it is possible to standardize the recorded contents of some incidental information (such as changes in physical condition and injection site at the time of injection) that are selectively input from options prepared in advance, This makes it easier for doctors to make decisions and makes an accurate treatment plan.

<Hall IC>
FIG. 6 is a diagram illustrating a configuration example of the Hall IC 13b. The Hall IC 13b in this configuration example is a digital output type bipolar detection Hall IC that turns on (active Low) the detection signal OUT when a magnetic field is detected in either the S pole or the N pole. The Hall IC b1 and the dynamic offset canceller b2 A differential amplifier b3, a sample and hold unit b4, a hysteresis comparator b5, a latch unit b6, an output unit b7, and a timing logic unit b8.

  The Hall IC 13b includes four external terminals (ground terminals A1 and A2, a power supply terminal B1, and an output terminal B2) as means for establishing an electrical connection with the outside of the IC. The capacitance value of the bypass capacitor C1 externally attached to the power supply terminal B1 may be adjusted depending on the situation such as power supply noise (for example, 0.1 μF).

  Since the Hall IC 13b needs to be mounted on the syringe 10, it is desirable to adopt a CSP [chip size package] package (for example, 0.8 mm square, 0.1 mm thickness) of an ultra-small and thin wafer level.

  The Hall IC 13b desirably supports a low power supply voltage (for example, 1.8V power supply voltage).

  The Hall element b1 can be equivalently expressed as a Wheatstone bridge (resistance bridge). When a magnetic field is applied in a direction that penetrates the Hall element b1 (see the X in the figure) with the power supply voltage VDD applied between both ends of the bridge, a Hall voltage corresponding to the magnetic field is output from between the midpoint ends of the bridge. Is done.

  The dynamic offset canceller b2 switches between a terminal (bias direction) for applying the power supply voltage VDD to the hall element b1 and a terminal for extracting the hall voltage from the hall element b1 so as to switch the direction of the current flowing through the hall element b1 by 90 °. As a result, the offset voltage of the Hall element b1 is dynamically canceled. The offset voltage of the Hall element b1 is generated due to an imbalance of the bridge resistance or a change in resistance value due to package stress or mounting stress.

  The differential amplifier b3 generates a differential amplified signal by amplifying the differential input signal input from the dynamic offset canceller b2 with a predetermined gain.

  The sample hold unit b4 samples / holds the differential amplified signal b4 input from the differential amplifier b3 at a predetermined timing, thereby generating a differential output signal in which only the signal component corresponding to the detected magnetic field is extracted.

  The hysteresis comparator b5 generates a comparison output signal by comparing the differential output signals input from the sample hold unit b4 with each other.

  The latch unit b6 generates a latch output signal by latching the comparison output signal input from the hysteresis comparator b5 at a predetermined timing.

  The output unit b7 generates a detection signal OUT corresponding to the latch output signal input from the latch unit b6 and outputs the detection signal OUT from the output terminal B2. In the Hall IC 13b of this configuration example, a CMOS inverter is used as the output unit b7 instead of an open drain transistor (or an open collector transistor). Therefore, it is not necessary to attach a pull-up resistor to the output terminal B2, and it can be directly connected to the recorder 20 (particularly the microcomputer 23).

  The timing logic unit b8 performs switching control of circuit wiring by the dynamic offset canceller b2 in synchronization with a clock signal having a predetermined frequency. In addition, the timing logic unit b8 intermittently operates the Hall element b1, the dynamic offset canceller b2, the differential amplifier b3, the sample hold unit b4, and the hysteresis comparator b5 with a predetermined pulse drive cycle (several tens of ms). Also, it has a function of reducing current consumption of the Hall IC 13b. More specifically, the timing logic unit b8 supplies magnetic power to each of the above parts during a predetermined start-up period (several tens of μs), and performs magnetic field detection, while in the remaining standby period, Stop power supply to reduce current consumption. In the standby period, since the detection result so far is held in the latch unit b6, the logic level of the detection signal OUT does not become indefinite.

<Digital output operation>
FIG. 7 is a diagram illustrating an example of a digital output operation by the Hall IC 13b. In addition, the horizontal axis of this figure shows the magnetic flux density B [mT] detected by the Hall IC 13b, and the vertical axis of this figure shows the detection signal OUT [V]. As shown in this figure, when the Hall IC 13b is a bipolar detection type, the Hall IC 13b applies a magnetic field perpendicular to the upper surface of the package regardless of whether the detected magnetic field is the S pole or the N pole. To detect.

  More specifically, when the distance between the magnet 13a and the Hall IC 13b is large and the magnetic flux density B detected by the Hall IC 13b is smaller than the operating magnetic flux densities BopS and BopN, the detection signal OUT is at a high level (= magnetic field). Logic level when not detected).

  When the magnet 13a is moved closer to the Hall IC 13b and the magnetic flux density B detected by the Hall IC 13b becomes larger than the operating magnetic flux density BopS or BopN, the detection signal OUT is switched to a low level (= logical level at the time of magnetic field detection). Note that the recorder 20 (particularly the microcomputer 23) can determine that self-injection by the syringe 10 has been performed when the detection signal OUT is maintained at a low level for a predetermined period.

  Thereafter, when the magnet 13a is moved away from the Hall IC 13b, the detection signal OUT returns to a high level at a point where the magnetic flux density B detected by the Hall IC 13b is slightly smaller than the operating magnetic flux densities BopS and BopN. The magnetic flux density B at this point is referred to as return magnetic flux density BrpS and BrpN. As described above, by providing hysteresis between the operating magnetic flux densities BopS and BopN and the return magnetic flux densities BrpS and BrpN, it is possible to prevent erroneous detection of the Hall IC 13b due to noise or the like. Even if the hysteresis is provided, if the chattering occurs in the detection signal OUT of the Hall IC 13b, the abnormality determination process may be performed by the recorder 20 (particularly the microcomputer 23).

<Analog output operation>
In the above description, the digital output type Hall IC 13b is taken as an example. However, the Hall IC 13b may be an analog output type. FIG. 8 is a diagram illustrating an example of an analog output operation when the Hall IC 13b is an analog output system. Note that the horizontal axis of the figure shows the magnetic flux density B [mT] detected by the Hall IC 13b, as in FIG. 7, and the vertical axis of the figure shows the detection signal OUT [V]. It is shown.

  As shown in this figure, when the Hall IC 13b is an analog output system, the voltage value of the detection signal OUT decreases linearly as the S pole is strong, and conversely increases as the N pole is strong. .

  If such a detection signal OUT is analyzed, the relative position between the syringe 11 and the plunger 12 (= distance change between the magnet 13a and the Hall IC 13b accompanying the pushing of the plunger 12) can be traced in an analog manner. It is possible to infer the operating state of the plunger 12 due to.

  Therefore, the attending physician can grasp the status of self-injection by the patient (such as the amount of medicinal solution injected and the behavior change of the patient during self-injection) from the automatically recorded injection execution data. It becomes possible to reduce. For example, by graphing the change over time in the distance between the magnet 13a and the Hall IC 13b, the doctor can determine whether the administration of the drug solution by injection has been completed correctly or whether the injection has been completed a little at the end. It becomes possible to confirm.

<When using auxiliary tools>
FIG. 9 is a diagram illustrating an example when the auxiliary tool is used. In the case of self-injection, in addition to the method of using the syringe 10 as it is, by attaching an auxiliary tool 15 to the syringe 10 as shown in this figure, the injection posture is set correctly or the injection needle is covered so that it cannot be seen. There is a usage method that diminishes the fear of injection. In this case, the magnet 13a and the Hall IC 13b are preferably arranged as shown in the figure. More specifically, the magnet 13a may be provided in the plunger head 12a, and the Hall IC 13b may be provided in an appropriate position of the auxiliary tool 15 (= a position facing the magnet 13a, for example). By setting it as such a structure, it becomes possible to construct | assemble the injection management system 1 similar to the previous.

<Other variations>
The various technical features disclosed in the present specification can be variously modified within the scope of the technical creation in addition to the above-described embodiment. That is, the above-described embodiment should be considered as illustrative in all points and not restrictive, and the technical scope of the present invention is not limited to the above-described embodiment, and It should be understood that all modifications that fall within the meaning and range are included. For example, it can be used not only for confirming the implementation status of self-injection, but also for confirming the implementation status of an injection for a patient in a hospital, and can be applied to applications other than injection. Although only the case of detecting the change in magnetic flux density by the magnet has been described, a change in capacitance value, a change in resistance value, a change in acceleration, or the like may be detected.

  The invention disclosed in this specification relates to a medical device called a syringe and a medical system using the medical device. Therefore, it does not fall under the “method of operating, treating, or diagnosing humans” and has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Injection management system 10 Syringe 11 Syringe 11a Flange 12 Plunger 12a Plunger head 13 Sensor 13a Magnet 13b Hall IC
14 Connector 15 Auxiliary Tool 20 Recorder 21 Battery 22 RTC
23 Microcomputer 24 Memory 25 Communication unit 30 Information processing terminal (smartphone)
31 touch panel 32 date and time recording box 33 physical condition recording box 34 change recording box 35 body temperature recording box 36 part recording box 37 comment recording box 38 recording button 40 cloud server 50 hospital 60 service support company 70 cable 71 connector attaching / detaching part A1, A2 ground terminal B1 Power supply terminal B2 Output terminal C1 Capacitor b1 Hall element b2 Dynamic offset canceller b3 Differential amplifier b4 Sample hold part b5 Hysteresis comparator b6 Latch part b7 Output part b8 Timing logic part

Claims (12)

A syringe holding a liquid medicine to be injected;
A plunger for pushing out the drug solution from the syringe;
A sensor that outputs a detection signal corresponding to the relative movement between the syringe and the plunger;
A syringe characterized by comprising: The sensor is
A magnet provided on one of the syringe and the plunger;
Hall IC provided on the other of the syringe and the plunger,
The syringe according to claim 1, comprising:   The syringe according to claim 2, wherein the Hall IC is a bipolar detection type.   3. The syringe according to claim 2, wherein the Hall IC is a monopolar detection type.   The syringe according to any one of claims 2 to 4, wherein the Hall IC is a digital output system.   The syringe according to any one of claims 2 to 4, wherein the Hall IC is an analog output system.   The syringe according to any one of claims 1 to 6, further comprising a connector to which a cable for establishing a connection with a recorder for recording the detection signal is attached and detached. The syringe according to any one of claims 1 to 7,
A recorder for automatically giving date and time information to the detection signal input from the syringe to generate injection execution data;
An injection management system comprising:   The injection management system according to claim 8, further comprising an information processing terminal that accepts manual input of incidental information by a user of the syringe and expands the injection execution data input from the recorder.   The injection management system according to claim 9, wherein the incidental information is selectively input from options prepared in advance.   The injection management system according to claim 9 or 10, further comprising a cloud server that stores the injection execution data expanded by the information processing terminal. A sensor unit having a sensor support unit to which the sensor IC is fixed, and a sensor moving unit that changes a relative position with respect to the sensor IC and affects an output value of the sensor IC;
A recording unit for recording the usage status of the sensor unit that automatically gives date and time information to the output information of the sensor IC;
And a data transmission unit configured to transmit the information of the recording unit to the display unit for display.

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