Chemical solution injection device, processing method, and program

Abstract

A chemical solution injection device (400) according to the present disclosure comprises: an acquisition unit (11) that acquires chemical solution information from a data carrier added to a chemical solution syringe held by a chemical solution holding unit; and a registration unit (12) that, upon satisfaction of a determination condition after acquisition of the chemical solution information, registers, as usage history information, identification information of the chemical solution syringe indicated by the chemical solution information, in association with usage state information indicating that the chemical solution syringe has been used.

Description

Chemical liquid injection device, processing method, and program

[0001] The present disclosure relates to a chemical liquid injector, a processing method, and a program.

[0002] A technology related to the present disclosure is disclosed in Patent Document 1. In the technology described in Patent Document 1, a radio frequency identification (RFID) chip recording liquid data is mounted on a liquid syringe. The liquid data includes information identifying the liquid filled in the liquid cylinder. When a liquid syringe is attached to a predetermined position of the liquid injector, the liquid injector obtains the liquid data from the RFID chip mounted on the liquid syringe and uses the liquid data to perform various processes.

[0003] WO 2006 / 109778

[0004] An example of an object of the present disclosure is to provide a new technology related to a liquid injector that acquires liquid information from a data carrier attached to a liquid syringe and executes various processes.

[0005] According to the present disclosure, there is provided a liquid medicine injection device having: an acquisition unit that acquires liquid medicine information from a data carrier attached to a liquid medicine syringe held in a liquid medicine holding unit; and a registration unit that, in response to a determination condition being met after acquiring the liquid medicine information, links usage status information indicating that the liquid medicine syringe has been used to identification information indicated by the liquid medicine information and registers the linked usage status information in usage history information.

[0006] Furthermore, according to the present disclosure, there is provided a processing method for a liquid medicine injection device, in which one or more computers acquire liquid medicine information from a data carrier attached to a liquid medicine syringe held in a liquid medicine holding section, and, depending on whether a determination condition is met after acquiring the liquid medicine information, link usage status information indicating that the liquid medicine syringe has been used to identification information indicated by the liquid medicine information, and register the linked information in usage history information.

[0007] Furthermore, according to the present disclosure, there is provided a program that causes a computer to function as: an acquisition means that acquires liquid medicine information from a data carrier attached to a liquid medicine syringe held in a liquid medicine holding section; and a registration means that, in response to a determination condition being met after the liquid medicine information is acquired, links usage status information indicating that the liquid medicine syringe has been used to identification information indicated by the liquid medicine information and registers the linked usage status information in usage history information.

[0008] The present disclosure also provides a chemical liquid injection device having: a chemical liquid holding section made of metal and holding a chemical liquid syringe; a reader antenna for short-range wireless communication attached to the chemical liquid holding section; and an electrical connection member for electrically connecting the chemical liquid holding section and a potential fixing section.

[0009] According to one aspect of the present disclosure, a new technology is realized for a liquid injector that acquires liquid information from a data carrier attached to a liquid syringe and executes various processes.

[0010] FIG. 1 is an example of a configuration diagram of a fluoroscopic imaging system. FIG. 2 is another example of a configuration diagram of a fluoroscopic imaging system. FIG. 3 is a diagram showing an example of the external configuration of a liquid injector. FIG. 4 is a diagram showing another example of the external configuration of a liquid injector. FIG. 5 is a diagram showing another example of the external configuration of a liquid injector. FIG. 6 is an example of information output by the liquid injector. FIG. 7 is another example of information output by the liquid injector. FIG. 8 is another example of information output by the liquid injector. FIG. 9 is another example of information output by the liquid injector. FIG. 10 is another example of information output by the liquid injector. FIG. 11 is another example of information output by the liquid injector. FIG. 12 is another example of information output by the liquid injector. FIG. 13 is another example of information output by the liquid injector. FIG. 14 is another example of information output by the liquid injector. FIG. 15 is another example of information output by the liquid injector. FIG. 16 is an example of a functional block diagram of a chemical liquid injector. FIG. 17 is a flowchart showing an example of processing executed by the chemical liquid injector. FIG. 18 is a diagram showing an example of the hardware configuration of a chemical liquid injector. FIG. 19 is another example of a functional block diagram of a chemical liquid injector. FIG. 20 is a flowchart showing another example of processing executed by the chemical liquid injector. FIG. 21 is a flowchart showing processing of a comparative example. FIG. 22 is a flowchart showing another example of processing executed by the chemical liquid injector. FIG. 23 is another example of a functional block diagram of a chemical liquid injector. FIG. 24 is another example of a functional block diagram of a chemical liquid injector. FIG. 25 is another example of a functional block diagram of a chemical liquid injector. FIG. 26 is a diagram showing an example of the internal configuration of a chemical liquid injector. FIG. 27 is a diagram showing another example of the internal configuration of a chemical liquid injector. FIG. 28 is a schematic cross-sectional view showing an example of the relationship between a chemical liquid syringe, an electronic tag, a reader antenna, and a chemical liquid holding unit.

[0011] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In this disclosure, the drawings relate to one or more embodiments. In all drawings, similar components are designated by similar reference numerals, and descriptions thereof will be omitted as appropriate.

[0012] First Embodiment Overview A liquid injector according to a first embodiment manages used liquid syringes using liquid information acquired from a data carrier attached to the liquid syringe. Specifically, after acquiring the liquid information from the data carrier attached to the liquid syringe, the liquid injector associates usage status information indicating that the liquid syringe has been used with identification information of the liquid syringe indicated in the acquired liquid information, and registers the associated usage status information in usage history information in response to determining that the liquid syringe has been used.

[0013] According to this liquid injector, it is possible to identify used liquid syringes based on the registered usage history information, thereby preventing problems such as erroneous reuse of used liquid syringes.

[0014] <Configuration Example of Fluoroscopic Imaging System Including Chemical Liquid Injector> First, a configuration example of a fluoroscopic imaging system including a chemical liquid injector will be described. Note that the configuration of the fluoroscopic imaging system described here is merely an example and is not intended to be limiting. Furthermore, the use of the chemical liquid injector is not limited to this example.

[0015] This section describes the basic configuration of a fluoroscopic imaging system including a liquid injector. The distinctive functions of the liquid injector described above in the <Overview> section are described below in the <Functional Configuration of the Liquid Injector> section.

[0016] 1 and 2, a fluoroscopic imaging system 1000 includes a Radiology Information System (RIS) 100, a Computed Tomography (CT) scanner 200, a Picture Archiving and Communication Systems (PACS) 300, a liquid injector 400, a control box 500, an image viewer 600, and a Hospital Information System (HIS) 900. Fig. 1 shows the functional configuration of each device, and Fig. 2 shows the hardware configuration of each device.

[0017] It should be noted that the fluoroscopic imaging system 1000 does not necessarily have to include the control box 500. As will be described later, the control box 500 relays data when transmitting and receiving data between a plurality of devices. When the fluoroscopic imaging system 1000 does not include the control box 500, data is transmitted and received directly between the plurality of devices without data relay by the control box 500.

[0018] In the illustrated example of fluoroscopic imaging system 1000, there is one each of CT scanner 200, PACS 300, liquid injector 400, control box 500, and HIS 900, and each combination has a one-to-one relationship. Note that this relationship is merely an example and is not limiting.

[0019] 2 , the HIS 900 is connected to the RIS 100 via a communication network 700 such as a LAN (Local Area Network). The RIS 100 and the PACS 300 are connected to the CT scanner 200 via communication networks 701 and 702. Meanwhile, the control box 500 is also connected to the RIS 100, the PACS 300, and the liquid injector 400 via communication networks 703 to 705. The image viewer 600 is connected to the PACS 300 via a communication network 706.

[0020] The fluoroscopic imaging system 1000 of this embodiment can comply with the so-called HL7 standard or the DICOM (Digital Imaging and Communications in Medicine) standard, in which case the various devices 100 to 600 and 900 can communicate various types of data with each other.

[0021] The basic configuration of each of the multiple devices that make up the diagnostic imaging system 1000 will be described below.

[0022] The "HIS 900" is a so-called computer device. A specific computer program is installed, and the computer device executes various processes in accordance with this computer program, thereby logically realizing various parts such as a medical record management part 901 and an accounting processing part 902 in the HIS 900, as shown in FIG. 1.

[0023] The medical record management unit 901 corresponds to a storage area of ​​a hard disk drive (HDD) recognized in accordance with the computer program described above, and stores so-called electronic medical records. This electronic medical record is created for each subject and includes, for example, a medical record ID (identifier) ​​that is unique identification information, a subject ID for each subject, personal data such as the subject's weight, sex, and age, and medical record data related to the subject's illness, as well as other text data.

[0024] The accounting processing unit 902 corresponds to the function of the CPU to execute predetermined processing in response to a computer program and input data, and executes accounting processing for the imaging work based on various accounting-related data.

[0025] The "RIS 100" is a so-called computer device. A specific computer program is installed, and the computer device executes various processes in accordance with the computer program, thereby logically realizing various units such as an order management unit 101, an order selection unit 102, and an integrated control unit 103 in the RIS 100, as shown in FIG. 1 .

[0026] The order management unit 101 corresponds to a storage area of ​​an HDD recognized in accordance with the above-mentioned computer program, and manages imaging order data for capturing fluoroscopic image data from a subject using unique identification information.

[0027] This imaging order data is created based on the electronic medical record obtained from the HIS 900. The imaging order data created in this way includes, for example, text data such as an imaging job ID which is unique identification information, the subject ID and personal data and medical record data in the electronic medical record described above, identification information of the CT scanner 200, the date and time of the start and end of imaging, a body part or imaging region, and the product name of the contrast agent which is a medicinal liquid.

[0028] The order selection unit 102 corresponds to a function in which a CPU executes a predetermined process in response to an input operation on a keyboard or the like, and selects one of a plurality of imaging order data in response to an input operation by an operator.

[0029] The integrated control unit 103 corresponds to, for example, a function of a CPU to send and receive various data via a communication I / F (Interface), and replies with the selected imaging order data in response to an acquisition request received from the CT scanner 200 or the control box 500.

[0030] 1 and 2, the "CT scanner 200" has a fluoroscopic imaging unit 201, which is an imaging execution mechanism, and an imaging control unit 210. The fluoroscopic imaging unit 201 captures fluoroscopic image data from a subject. The imaging control unit 210 controls the operation of the fluoroscopic imaging unit 201.

[0031] More specifically, the imaging control unit 210 is a so-called computer device that is installed with a predetermined computer program, and the computer device executes various processes in accordance with the computer program, thereby logically realizing various units, such as a request sending unit 211, an order receiving unit 212, an imaging control unit 213, a data providing unit 214, and an image sending unit 215, as shown in FIG.

[0032] The request sending unit 211 corresponds to a function of the CPU transmitting and receiving various data via a communication I / F in response to input operations on a keyboard or the like, and sends a request to acquire imaging order data to the RIS 100 in response to input operations by the operator. The order receiving unit 212 receives the imaging order data returned from the RIS 100.

[0033] The imaging control unit 213 controls the operation of the fluoroscopic imaging unit 201 in accordance with the received imaging order data. The data assigning unit 214 assigns the imaging order data to the fluoroscopic image data captured by the fluoroscopic imaging unit 201.

[0034] The image transmitting unit 215 transmits the fluoroscopic image data to which the imaging order data has been added to the PACS 300. The fluoroscopic image data generated as described above is made up of, for example, bitmap data of a tomographic image.

[0035] The "PACS 300" is a database server configured with a computer device. A specific computer program is installed, and the computer device executes various processes in accordance with the computer program, thereby logically realizing each unit in the PACS 300. The PACS 300 receives and stores fluoroscopic image data to which imaging order data has been assigned from the CT scanner 200.

[0036] As shown in FIGS. 1 and 2, "liquid injector 400" includes an injection control unit 401 and an injection head 410. FIG. 3 shows an example of an implementation of liquid injector 400. Note that the configuration of liquid injector 400 is not limited to the example shown in FIG. 3. Injection control unit 401 controls the operation of injection head 410. As shown in FIG. 4, injection head 410 drives a detachably attached liquid syringe 800 to inject the liquid into the subject. Note that, although not shown, liquid syringe 800 may be attached to the liquid injector via an adapter.

[0037] In one example, the injection control unit 401 may have a main operation unit 402, a touch panel 403, a controller unit 404, a computer unit 405, a communication I / F 406, etc., as shown in FIG.

[0038] The injection head 410 may have a syringe holding mechanism 411 that holds the liquid syringe 800 as part of the injection execution mechanism, a syringe drive mechanism 412 that drives the liquid syringe 800, a sub-operation unit 413 through which operation instructions for the syringe drive mechanism 412 are input and operated, and a head display 415 that is a data display device that displays and outputs various data.

[0039] Sub-operation unit 413 has a final confirmation switch 414, which will be described later. Head display 415 is fixed directly to the rear side of injection head 410, and is disposed near syringe holding mechanism 411 and syringe drive mechanism 412.

[0040] Note that there are multiple types of liquid syringes 800 that can be attached to the liquid injector 400, and some of them have an electronic tag 810 attached at a predetermined position. The injection head 410 is equipped with a reader antenna 416 at a position that allows wireless communication with the electronic tag 810 when the liquid syringe 800 is properly held by the syringe holding mechanism 411. The reader antenna 416 is connected to a control circuit provided at any position and constitutes a tag reader that reads information from the electronic tag. As a modified example, instead of the electronic tag 810, a barcode or two-dimensional code may be attached to the liquid syringe 800. Furthermore, instead of the reader antenna 416, the liquid injector 400 may be equipped with a code reader that reads information from the barcode or two-dimensional code. Although the diameters of the multiple types of liquid syringes 800 may differ from one another, attaching them to the liquid injector 400 via an adapter allows multiple types of liquid syringes 800 with different diameters to be attached to the liquid injector 400.

[0041] The liquid syringe 800 includes a so-called pre-filled syringe that is shipped filled with a liquid medicine. The pre-filled syringe is provided with an electronic tag 810 that records information about the liquid medicine filled in the syringe. In one example, the electronic tag 810 is provided to the liquid syringe 800 before shipping.

[0042] "Medicine information" is information about the medicine filled in the medicine syringe. The medicine information may include, for example, the product name, volume, iodine content per mL, iodine content per syringe, serial number, expiration date, pressure resistance, medicine ID (identifier), chemical classification, contained components, viscosity, syringe volume, syringe pressure resistance, syringe inner diameter, piston stroke, lot number, sales price, electronic tag identification information, etc. The medicine information may also include other information. Furthermore, the medicine information may not include some of the information exemplified here.

[0043] The above-mentioned components are connected to a computer unit 405 of the liquid injector 400. The computer unit 405 performs integrated control of the components connected thereto in accordance with a computer program installed therein.

[0044] For this reason, the liquid injection device 400 logically has various functions, such as a data input unit that acquires liquid information from the liquid syringe 800 loaded in the syringe holding mechanism 411, an injection control unit that controls the operation of the syringe drive mechanism 412 in accordance with the set injection control data, a control setting unit that sets at least a portion of the acquired liquid information in the injection control unit as at least a part of the injection control data, and a data output unit that, once the injection of the liquid is completed, transmits at least a part of the liquid information to the HIS 900 as part of accounting-related data.

[0045] More specifically, each part of the liquid medicine injector 400 as described above corresponds to a function of the computer unit 405 communicating data with the RIS 100 and the PACS 300 via the communication I / F 406 in accordance with the computer program as described above, and a function of the computer unit 405 executing predetermined data processing.

[0046] As described above, the liquid syringe 800 is equipped with an electronic tag 810 on which liquid information is recorded, and therefore the data input unit can acquire the liquid information from the electronic tag 810 of the liquid syringe 800 using the reader antenna 416.

[0047] Furthermore, the data input unit can acquire at least a part of the imaging order data from the RIS 100, and the control setting unit can set at least a part of the acquired imaging order data in the injection control unit as at least a part of the injection control data.

[0048] For example, upon receiving an acquisition request operation from a user, the liquid injector 400 transmits an information request to the RIS 100 via the control box 500. Then, the liquid injector 400 acquires part of the imaging order data as injection condition data from the RIS 100 via the control box 500. Then, the liquid injector 400 sets the patient ID, the body part to be imaged, etc. from the injection condition data in the injection control unit as at least part of the injection control data.

[0049] Such injection control data may be, for example, protocol data in which the operating stroke and operating pressure of syringe drive mechanism 412 are set by predetermined commands for each elapsed time.

[0050] The liquid injector 400 can automatically set the injection control data using the above-mentioned components, but may also be able to manually set and edit the injection control data. This configuration can be realized using well-known technology.

[0051] As described above, the liquid injector 400 is connected to the HIS 900 via the RIS 100. Therefore, the liquid injector 400 can transmit at least a portion of the liquid information acquired from the electronic tag 810, along with the imaging job ID and the patient ID, to the HIS 900 via the RIS 100 as part of the accounting-related data. By transmitting the liquid information acquired from the electronic tag 810 to the HIS 900 as part of the accounting-related data and using the liquid information acquired from the electronic tag 810 in accounting processing, accounting errors can be reduced. This configuration can reduce human error when manually entering information about the liquid used and billing errors due to forgetting to enter information. Furthermore, when the information acquired from the electronic tag 810 (e.g., liquid information) is used after confirming patient information such as that shown in FIG. 13 (described later), the wrong liquid is used on the wrong patient and the resulting incorrect billing can be prevented. Furthermore, when emergency patients are admitted at night, even if there is no CT technician present, by using a prefilled syringe with an electronic tag 810, information on the use of the liquid medicine is automatically sent to the accounting system, reducing the chances of forgetting to pay or billing for the wrong liquid medicine.

[0052] Furthermore, the liquid injector 400 generates injection history data consisting of the operation history of the syringe drive mechanism 412 corresponding to the injection condition data, and can transmit the generated injection history data to the PACS 300 and store it together with the fluoroscopic image data.

[0053] Such injection history data consists, for example, of image data of a time-lapse graph in which one of the horizontal and vertical axes is elapsed time and the other is injection pressure (or injection rate), and injection control data, subject ID, injection work ID, etc. are provided as text data.

[0054] The liquid injector 400 can register at least a portion of the liquid information transmitted to the HIS 900 as part of the accounting-related data and at least a portion of the injection condition data in the injection history data.

[0055] As shown in FIG. 2, the "control box 500" includes a computer unit 501 in which a predetermined computer program is installed, a communication I / F 502, and the like.

[0056] As the computer unit 501 executes various processes in accordance with a predetermined computer program, each unit such as an acquisition intermediation unit 511 and a history transfer unit 514 is logically realized in the control box 500, as shown in FIG. 1 .

[0057] The acquisition intermediary unit 511 acquires imaging order data from the RIS 100 in response to an acquisition request received from the liquid injector 400, and returns part of the acquired imaging order data as part of the injection control data to the liquid injector 400. The history transfer unit 514 receives injection history data from the liquid injector 400 and transfers it to the PACS 300.

[0058] Therefore, the PACS 300 of this embodiment can not only store the fluoroscopic image data received from the CT scanner 200 as described above, but also store the injection history data received from the control box 500 as described above.

[0059] As described above, imaging order data is assigned to the fluoroscopic image data, and the imaging job ID of this imaging order data is assigned to the injection history data. Therefore, the imaging order data and the injection history data are stored in the PACS 300 in a state where they are associated with each other by the imaging job ID.

[0060] 2, the "image viewing device 600" includes a computer unit 601, a display unit 602, a controller unit 603, a communication I / F 604, etc. The computer unit 601 executes various processes in accordance with computer programs, whereby each unit, such as a data reading unit 611 and a data display unit 612, is logically realized in the image viewing device 600 as shown in FIG.

[0061] The data reading unit 611 corresponds to, for example, a function in which the computer unit 601 accesses the PACS 300 from the communication I / F 604 in response to a computer program and input data to the controller unit 603, and can read out from the PACS 300 fluoroscopic image data and injection history data associated with an imaging job ID.

[0062] The data display section 612 corresponds to a function of the computer unit 601 to display data received by the communication I / F 604 on the display unit 602, and can display the read-out fluoroscopic image data and injection history data.

[0063] A method for capturing fluoroscopic image data from a subject using fluoroscopic imaging system 1000 will now be described in sequence.

[0064] First, the operator registers imaging order data in advance in the RIS 100. This imaging order data is composed of text data such as an imaging job ID, identification information of the CT scanner 200, the dates and times of the start and end of imaging, and the body part to be imaged. This imaging order data is usually created based on the electronic medical record of each subject.

[0065] Therefore, the worker who creates the imaging order data manually operates the RIS 100 to obtain the electronic medical record from the HIS 900. The imaging order data also includes the subject's ID, name, weight, and type of medication with a history of side effects. However, the imaging order data also includes various data necessary for imaging operations using the CT scanner 200.

[0066] When an imaging operation is to be performed with such imaging order data registered in the RIS 100, the worker manually operates the RIS 100 to select one piece of imaging order data corresponding to the imaging operation.

[0067] 5 , at the imaging site, liquid injector 400 is placed near fluoroscopic imaging unit 201 of CT scanner 200. Liquid syringe 800 is connected to the patient positioned in fluoroscopic imaging unit 201 via an extension tube, and liquid syringe 800 is loaded into injection head 410 of liquid injector 400.

[0068] Next, when the operator activates the liquid injector 400 by inputting data into the main operation section 402 of the injection control unit 401, schematic images of multiple body parts corresponding to the shape of the human body are displayed on the touch panel 403, as shown in FIG. 6 .

[0069] In the initial state where no injection control data has been set, the liquid injector 400 of this embodiment prohibits the injection control data from controlling the operation of the syringe drive mechanism 412. With the initial screen displayed as described above, the liquid injector 400 allows the entire injection control data to be set manually, or a portion of the injection control data to be set automatically from the imaging order data.

[0070] For manual setting, the operator presses one of the schematic images of multiple body parts displayed on touch panel 403. When this is done, only the schematic image of the selected body part is illuminated, while the other schematic images are darkened, and a schematic image of the scanner mechanism is displayed above the schematic image of the selected body part.

[0071] At the same time, schematic images of multiple imaging regions related to the selected body part are read out and displayed on the selection screen below. When the operator selects one of these images with his / her finger, only the selected schematic image is illuminated and the other schematic images are darkened, as shown in Figure 7.

[0072] When the imaging region is selected as described above, the operating condition data corresponding to that imaging region is read and set as injection control data in liquid injector 400. Furthermore, as shown in Fig. 8, the operator inputs the patient's weight, injection rate, total injection amount, injection time, etc. into main operation unit 402 as injection control data.

[0073] In the liquid injector 400 of this embodiment, information is acquired from the electronic tag 810 via the reader antenna 416, thereby confirming whether the electronic tag 810 is mounted on the liquid syringe 800.

[0074] If the liquid syringe 800 is equipped with an electronic tag 810, the liquid information is acquired by the reader antenna 416. As described above, this liquid information includes various types of information related to the liquid filled in the liquid syringe 800.

[0075] A portion of the liquid medicine information thus acquired is then displayed on touch panel 403 of injection control unit 401 and head display 415 of injection head 410, as shown in FIG.

[0076] At this time, the touch panel 403 and head display 415 display a predetermined logo mark such as "RFID" to indicate that the displayed liquid information has been obtained from the electronic tag 810 of the liquid syringe 800.

[0077] Therefore, the operator checks the liquid information displayed as described above and inputs the injection control data. Once the injection control data has been set, the operator is ready to input a command to start injection. Once the operator is ready to input a command to start injection, the liquid injector 400 can display, for example, a screen indicating that injection is possible on at least one of the touch panel 403 of the injection control unit 401 and the head display 415 of the injection head 410.

[0078] When the start of injection can be input by a predetermined means, syringe drive mechanism 412 is controlled in operation in accordance with the set injection control data, and contrast medium and physiological saline are appropriately injected into the subject. The start of injection can be input by pressing a predetermined button on liquid injector 400, by a predetermined input operation via touch panel 403, or by some other means.

[0079] In addition, in fluoroscopic imaging system 1000 of this embodiment, the injection control data can be set automatically in addition to being manually set in liquid injector 400 as described above. More specifically, in liquid injector 400 of this embodiment, an operation icon for requesting acquisition is also displayed in the upper left corner of the initial screen for the injection operation, as shown in FIG.

[0080] When the operation icon for this acquisition request is manually operated, the acquisition request is transmitted from the liquid injector 400 to the control box 500. The control box 500 transfers the acquisition request received from the liquid injector 400 to the RIS 100.

[0081] The RIS 100 then returns the imaging order data selected as described above to the control box 500. Upon receiving the imaging order data from the RIS 100, the control box 500 returns a part or all of the imaging order data to the liquid injector 400 as at least a part of the injection condition data.

[0082] More specifically, the imaging order data includes, as described above, an imaging job ID, identification information of the CT scanner 200, imaging start and end dates and times, subject ID, name, weight, body part or imaging region, and the like.

[0083] The control box 500 then extracts the imaging job ID, subject ID, name, weight, body part or imaging region, etc. from the acquired imaging order data and returns this to the liquid injector 400 as injection condition data.

[0084] 10 , during the above-described communication, liquid injector 400 displays guidance data indicating that communication is in progress on touch panel 403 and head display 415. This allows the operator to confirm in real time that liquid injector 400 is communicating.

[0085] Furthermore, if the injection condition data cannot be acquired due to a communication error or the like, guidance data indicating the failure of data acquisition is displayed on the touch panel 403 and the head display 415, as shown in Fig. 11. This allows the operator to quickly recognize the failure of data acquisition and perform a retry, etc.

[0086] In the liquid injector 400, the injection condition data acquired from the control box 500 in response to the acquisition request is displayed on the touch panel 403 and the head display 415, as shown in FIGS.

[0087] At this time, the name and gender of the subject may also be displayed as injection condition data. This allows the operator to confirm the consistency between the injection condition data and the actual subject. In addition to the injection condition data displayed as described above, the touch panel 403 and the head display 415 may also display an operation icon that instructs whether or not to use the injection condition data as injection control data.

[0088] In this example, when the operator wants to set the confirmed injection condition data as the injection control data, he / she inputs the "Use" operation icon. The liquid injector 400 then detects this and can set the injection condition data as the injection control data, as shown in FIG.

[0089] Furthermore, when liquid injector 400 of the present embodiment sets the injection control data from the injection condition data as described above, reader antenna 416 may check whether electronic tag 810 is mounted on liquid syringe 800. Note that the timing at which reader antenna 416 checks whether electronic tag 810 is mounted on liquid syringe 800 is not limited to the above timing, and may be any other timing.

[0090] If the liquid syringe 800 is equipped with an electronic tag 810, the liquid information is acquired by the reader antenna 416. As described above, this liquid information includes various information related to the liquid medicine filled therein.

[0091] A portion of the liquid medicine information thus acquired is then displayed on touch panel 403 of injection control unit 401 and head display 415 of injection head 410, as shown in FIG.

[0092] At this time, the touch panel 403 and head display 415 display a predetermined logo mark such as "RFID" to indicate that the displayed liquid information has been obtained from the electronic tag 810 of the liquid syringe 800.

[0093] Furthermore, when the medicinal liquid information is displayed on the touch panel 403 and the head display 415 as described above, an operation icon may be displayed to instruct whether or not to use the medicinal liquid information as injection control data.

[0094] In this example, if the operator wishes to use the confirmed liquid information as injection control data, he or she inputs the "Use" operation icon, which causes the liquid injector 400 to detect this and set part of the liquid information as injection control data.

[0095] Then, as shown in Figure 9, the product name, lot number, etc., which are part of the liquid medicine information, are displayed on the touch panel 403 and head display 415 along with the injection volume, which is the injection control data set from the liquid medicine information.

[0096] If the liquid syringe 800 does not have the electronic tag 810 mounted thereon, it will naturally not be detected by the reader antenna 416, and therefore the injection control data set from the injection condition data as described above will be used.

[0097] Furthermore, in the liquid injection device 400 of this embodiment, even when the injection control data is manually set without being set from the injection condition data as described above, it is effective to obtain liquid information from the electronic tag 810 of the liquid syringe 800 and set it as the injection control data as described above.

[0098] As described above, part of the displayed liquid medicine information includes product name, expiration date, etc., which are useful for the operator to visually check. Also, part of the liquid medicine information set as injection control data includes capacity, pressure resistance, etc., which are useful as injection control data.

[0099] 12, if the injection condition data includes the imaging site but does not include the weight, the injection control data set from the injection condition data will only include the imaging site. In this case, the injection control data set from the other injection condition data will be set manually.

[0100] Furthermore, the injection control data set based on the injection condition data and chemical liquid information as described above can also be corrected by input operations by the operator.

[0101] In the liquid injector 400 of this embodiment, even if the injection condition data is acquired from the imaging order data and the setting of the injection control data is completed as described above, the liquid injector 400 is not yet ready to start liquid injection.

[0102] Therefore, once the operator has completed setting the injection control data as described above, he or she performs a final check to ensure that no air bubbles have been mixed into the extension tube, and once this final check is complete, he or she operates the final check switch 414 on the injection head 410.

[0103] Upon detecting this, the liquid injector 400 assumes that the final check has been performed and releases the lock on the liquid injection operation. However, the liquid injector 400 of this embodiment may be configured so that liquid injection cannot be performed simply by performing the final check and releasing the lock on the operation.

[0104] For example, when the final confirmation switch 414 is operated as described above, the liquid injector 400 may cause the control box 500 to again acquire imaging order data from the RIS 100, as was done the first time, and may again acquire a portion of that data from the control box 500 as injection condition data.

[0105] Then, the liquid injector 400 may compare the injection condition data set as the injection control data with the reacquired injection condition data. If the injection condition data do not match, the liquid injector 400 may display on the touch panel 403 and the head display 415 an error guidance message such as "The imaging order has been changed. Please check," along with the dates and times of the first and second acquisitions, a list of matched and mismatched items, the contents of the mismatched data, etc.

[0106] In this case, for example, the initial state can be restored when confirmation completion is inputted to the touch panel 403 and the head display 415. Therefore, the injection operation will not be started in a state where the imaging order data has been changed.

[0107] On the other hand, when it is confirmed that the injection condition data set as the injection control data matches the reacquired injection condition data, the liquid injection device 400 can enter a state in which the start of injection can be input using the touch panel 403 and the head display 415.

[0108] When the start of injection is input, the operation of syringe drive mechanism 412 is controlled in accordance with the set injection control data, so that the contrast medium and physiological saline are appropriately injected into the subject as medicinal liquids.

[0109] At this time, the elapsed time is measured in real time and the actual injection rate is also detected, so that the operation of syringe drive mechanism 412 is feedback-controlled so that the injection rate matches the injection control data.

[0110] Furthermore, a time-lapse graph of the actual injection pressure (or injection rate) is generated in real time and displayed on the touch panel 403 and head display 415 together with the injection control data, for example.

[0111] As described above, if the injection control data is manually set without the injection condition data being acquired, the time-series graph may be displayed together with the manually set injection control data, as shown in FIG. 15 .

[0112] On the other hand, when injection condition data and liquid medicine information are acquired and the injection control data is automatically set, the time-series graph is displayed together with the automatically set injection control data, injection condition data, liquid medicine information, etc., as shown in Fig. 14. Furthermore, in this case, the imaging start time acquired from the injection condition data is also displayed on the time-series graph using a predetermined symbol mark.

[0113] When the injection operation is completed, injection history data containing a time-varying graph of the actual injection pressure (or injection rate) is generated. If the injection control data is manually set without acquiring the injection condition data, the injection history data thus generated consists of image data of the time-varying graph and text data of the manually set injection control data.

[0114] When the injection condition data and liquid medicine information are acquired and the injection control data is automatically set, the injection history data consists of image data of the time-lapse graph and text data of the injection control data and injection condition data.

[0115] This text data includes, for example, an injection work ID, which is identification information unique to each injection work, the dates and times of the actual start and end of injection, identification information for the liquid injection device 400, injection control data, information on whether the injection control data was all entered manually, partly acquired from imaging order data, or partly acquired from liquid information, the initial and confirmed acquisition dates and times if acquired from imaging order data, the acquired injection condition data and liquid information, etc.

[0116] Furthermore, when liquid medicine information is acquired from electronic tag 810 of liquid syringe 800, part of the liquid medicine information is also set as text data or the like in the injection history data.

[0117] Such text data includes, for example, information on whether the chemical information was obtained from the electronic tag 810 or manually entered, the product name of the chemical, the chemical ID, chemical classification, contained ingredients, expiration date, cylinder pressure resistance, lot number, sales price, etc.

[0118] When the liquid injector 400 completes the injection operation, the liquid injector 400 also generates completion notification data that includes at least the injection operation ID and notifies the completion. After completing the injection operation, the liquid injector 400 transmits the completion notification data and the injection history data to the control box 500.

[0119] The control box 500 then transfers the completion notification data received from the liquid injector 400 to the RIS 100. The RIS 100 stores the received completion notification data in a state in which the data is associated with the imaging order data by the injection job ID.

[0120] Furthermore, the control box 500 transfers the injection history data received from the liquid injector 400 to the PACS 300. The PACS 300 stores the received injection history data in a state where the data is managed by the imaging job ID.

[0121] In normal operation, imaging is started by CT scanner 200 around the time when the injection operation by liquid injector 400 is completed as described above. In this case, the operator inputs a command to start imaging into imaging control unit 210 of CT scanner 200.

[0122] In this CT scanner 200, the imaging control unit 210 controls the operation of the fluoroscopic imaging unit 201 in accordance with the imaging order data received, thereby performing the imaging work of fluoroscopic image data.

[0123] When the fluoroscopic imaging unit 201 captures fluoroscopic image data from the subject, the imaging control unit 210 assigns the imaging order data to the fluoroscopic image data. Next, the imaging control unit 210 transmits the fluoroscopic image data with the assigned imaging order data to the PACS 300.

[0124] The PACS 300 stores the received fluoroscopic image data in a state where the data is managed by the imaging job ID of the imaging order data. When an operator wishes to view the fluoroscopic image data, the operator reads the fluoroscopic image data from the PACS 300 by manually operating the image viewer 600, for example.

[0125] In this case, for example, when an imaging job ID is input as a search key, the fluoroscopic image data of that imaging job ID is read out from the PACS 300 and displayed on the display unit 602 of the image viewing device 600 .

[0126] At this time, the injection history data is also read from the PACS 300 using the imaging job ID, and is output and displayed on the display unit 602 of the image viewing device 600 as necessary.

[0127] In the fluoroscopic imaging system 1000 of this embodiment, when the liquid syringe 800 is loaded into the syringe drive mechanism 412 as described above, the liquid information recorded in the liquid syringe 800 is acquired, and at least a portion of this acquired liquid information is transmitted to at least one of the HIS 900, the RIS 100, and the PACS 300.

[0128] <Functional Configuration of Chemical Liquid Injector> Next, the characteristic functions of the chemical liquid injector described above in the <Overview> section will be described.

[0129] Fig. 16 shows an example of a functional block diagram of chemical liquid injector 400 according to this embodiment. As shown in the figure, chemical liquid injector 400 includes an acquisition unit 11, a registration unit 12, and a processing unit 13. Chemical liquid injector 400 may also include other units that implement the basic configuration described above in the section <Configuration Example of a Fluoroscopy Imaging System Including a Chemical Liquid Injector>. The function of each unit in Fig. 16 will now be described.

[0130] The acquisition unit 11 acquires liquid medicine information from a data carrier attached to a liquid medicine syringe held in the liquid medicine holding unit.

[0131] The "medicinal solution holding unit" is provided in the chemical solution injector 400. The chemical solution holding unit detachably holds a chemical solution syringe. The chemical solution holding unit may hold the chemical solution syringe via an adapter. By configuring the chemical solution holding unit to hold the chemical solution syringe via an adapter, the chemical solution holding unit can hold various chemical solution syringes with different diameters and sizes. The configuration of the chemical solution holding unit can be realized using widely known technology. Figure 4 shows an example of the chemical solution holding unit 1. The chemical solution holding unit 1 shown in Figure 4 has a fitting receiving portion into which the chemical solution syringe or the adapter fits. The fitting receiving portion is composed of a groove or member of a predetermined shape and a predetermined size.

[0132] A "medicinal liquid syringe" is a syringe filled with a medicinal liquid. In this embodiment, the type of medicinal liquid is not limited. Among medicinal liquid syringes, there are prefilled syringes that are filled with medicinal liquid in advance, and non-prefilled syringes that are not filled with medicinal liquid in advance. In some cases, prefilled syringes are provided with a data carrier that stores medicinal liquid information. FIG. 4 shows an example of a data carrier (electronic tag 810) provided to a medicinal liquid syringe 800.

[0133] A "data carrier" is a medium that holds (storages, etc.) data (information) or indicates information, and is a concept that includes, for example, electronic tags such as RFID tags, barcodes, two-dimensional codes, etc. Liquid medicine information is stored in electronic tags. Barcodes and two-dimensional codes themselves indicate information. Barcodes and two-dimensional codes may indicate liquid medicine information, or may indicate the storage location (path (URL, etc.)) of the liquid medicine information. In the following, the data carrier is assumed to be an electronic tag. Note that by managing the usage flag of the data carrier on the liquid medicine injector 400 side, a configuration that can also be used with non-rewritable data carriers may be possible.

[0134] "Medicinal liquid information" is information about the medical liquid filled in the medical liquid syringe. The medical liquid information may include, for example, the product name, volume, iodine content per mL, iodine content per syringe, serial number, expiration date, pressure resistance, etc. The medical liquid information may also include identification information of an electronic tag. The identification information of each electronic tag can be used as identification information for the medical liquid syringe to which the electronic tag is attached. Note that, in addition to the identification information of the electronic tag, identification information for distinguishing multiple medical liquid syringes from each other may be set. The medical liquid information may also include identification information for the medical liquid syringe. The medical liquid information may also include other information not exemplified here. The medical liquid information may not include some of the information exemplified here.

[0135] The liquid injector 400 includes a reader antenna. For example, the reader antenna is located at a position where it can communicate with an electronic tag attached to a liquid syringe held in the liquid holding unit via short-range wireless communication. The reader antenna communicates with the electronic tag via short-range wireless communication to acquire information recorded on the electronic tag. FIG. 4 shows an example of a reader antenna 416. In the illustrated example, the reader antenna 416 is located in the liquid holding unit 1. As shown in the cross-sectional view of FIG. 28 , the reader antenna 416 may include a ferrite sheet 417 on the surface opposite to the surface facing the electronic tag 810 to suppress radio wave interference. The operation of the reader antenna 416 is controlled by a control circuit located at any position in the liquid injector 400. As a variant, the liquid injector 400 may include a code reader that reads information from a barcode or two-dimensional code. The code reader is located at a position where it can read the barcode or two-dimensional code attached to the liquid syringe held in the liquid holding unit.

[0136] The acquisition unit 11 acquires, via the reader antenna, liquid medicine information from an electronic tag attached to the liquid medicine syringe held in the liquid medicine holding unit.

[0137] When the determination condition is satisfied after the acquisition unit 11 acquires the liquid medicine information, the registration unit 12 links the identification information of the liquid medicine syringe indicated by the acquired liquid medicine information with usage status information indicating that the syringe is "used" and registers the linked information in the usage history information.

[0138] The "identification information of the liquid syringe" is information that identifies multiple liquid syringes from one another. As described above, the liquid information includes the identification information of the liquid syringe. The identification information of the liquid syringe may be the identification information of an electronic tag attached to the liquid syringe, or may be other information.

[0139] The usage history information is recorded in at least one of a storage device provided in liquid injector 400 and an electronic tag attached to the liquid syringe. Note that the usage history information may also be recorded in a storage device provided in other devices such as PACS 300, RIS 100, HIS 900, etc.

[0140] The usage history information recorded in liquid injector 400 and the other devices described above includes information about multiple liquid syringes. That is, the usage history information recorded in liquid injector 400 and the other devices described above is registered by linking the identification information of each of the multiple liquid syringes with usage status information indicating that the syringe has been used.

[0141] On the other hand, the usage history information recorded on the electronic tag attached to the liquid syringe includes only information about that liquid syringe and does not include information about other liquid syringes. In other words, the usage history information recorded on the electronic tag attached to the liquid syringe is registered by linking the identification information of that liquid syringe with usage status information indicating that it has been used.

[0142] The "determination condition" is a condition for determining that a liquid syringe has been used. When the determination condition is met, the registration unit 12 determines that the liquid syringe has been used.

[0143] The judgment conditions include at least one of the following: (Judgment Condition 1) The remaining amount of medicinal liquid in the medicinal liquid syringe has fallen below a threshold (Judgment Condition 2) The medicinal liquid syringe has been removed from the medicinal liquid holding section after the remaining amount of medicinal liquid in the medicinal liquid syringe has fallen below a threshold (Judgment Condition 3) A predetermined amount or more has been aspirated into the medicinal liquid syringe that is a prefilled syringe (Judgment Condition 4) The medicinal liquid syringe has been removed from the medicinal liquid holding section after a predetermined amount or more has been aspirated into the medicinal liquid syringe that is a prefilled syringe

[0144] First, we will explain Determination Condition 1. The registration unit 12 identifies the "remaining amount of liquid in the liquid syringe" using widely known technology. Then, the registration unit 12 compares the identified remaining amount with a predetermined threshold value to determine whether Determination Condition 1 is satisfied.

[0145] An example of a method for identifying the remaining amount of liquid in a liquid syringe will be described below, but the method is not limited to this example.

[0146] In one example, the registration unit 12 can calculate the remaining amount of liquid in the liquid syringe based on the diameter of the liquid syringe held in the liquid holding unit and the position of the syringe drive mechanism that pushes the plunger of the liquid syringe held in the liquid holding unit. That is, in this example, the registration unit 12 does not measure the amount of liquid actually remaining in the liquid syringe, but calculates a theoretical value (predicted value) of the remaining amount of liquid in the liquid syringe that is determined from the diameter of the liquid syringe and the position of the syringe drive mechanism.

[0147] First, a method for identifying the diameter of a liquid syringe held in a liquid holding unit will be described. In one example, the diameter of a liquid syringe compatible with each adapter is uniquely determined for each adapter used to hold a liquid syringe in the liquid holding unit. Information linking adapter identification information with the diameter of a liquid syringe compatible with each adapter is stored in advance in liquid injector 400. After identifying the identification information of an adapter held in the liquid holding unit by any means, registration unit 12 references the information and identifies the diameter of the liquid syringe linked to the adapter identification information.

[0148] The means for identifying the identification information of the adapter held in the drug solution holding unit is not particularly limited. For example, an electronic tag recording the adapter's identification information may be attached to the adapter. The registration unit 12 may then acquire the adapter's identification information from the electronic tag attached to the adapter held in the drug solution holding unit via a reader antenna provided in the drug solution holding unit, thereby achieving the above identification. Alternatively, the drug solution holding unit may be provided with multiple physical buttons, and the various adapters may have outer shapes configured such that the pressed states of the physical buttons differ when the various adapters are attached to the drug solution holding unit. The registration unit 12 may then identify the identification information of the attached adapter based on the pressed states of the physical buttons.

[0149] Additionally, the liquid medicine information recorded in the electronic tag attached to the liquid medicine syringe may include information indicating the diameter of the liquid medicine syringe. Then, the registration unit 12 may identify the diameter of the liquid medicine syringe based on the liquid medicine information.

[0150] Once the diameter of the liquid syringe is identified, the remaining amount of liquid in the liquid syringe can be calculated based on the position (position that changes depending on the stroke) of syringe drive mechanism 412 (see FIG. 4 ) that pushes the plunger of the liquid syringe held in the liquid holding unit. For example, a calculation formula for calculating the remaining amount of liquid in the liquid syringe based on the diameter of the liquid syringe and the position of syringe drive mechanism 412 that pushes the plunger is stored in advance in liquid injector 400. Registration unit 12 can calculate the remaining amount of liquid in the liquid syringe using this calculation formula. As shown in FIG. 4 , syringe drive mechanism 412 is slidable within a predetermined range.

[0151] Another example of a method for determining the remaining amount of liquid in a liquid syringe will now be described. The syringe drive mechanism 412 is driven by a motor (not shown). The registration unit 12 constantly monitors the rotation of an encoder connected to the motor and increases or decreases the value of a current position counter corresponding to the position that changes with the stroke operation. The registration unit 12 then decreases the value of the current position counter when the syringe drive mechanism 412 pushes the plunger in, and increases the value of the current position counter when the plunger is pulled out. Furthermore, the registration unit 12 resets the value of the current position counter to zero when the plunger is pushed to the limit position. In this way, the position of the syringe drive mechanism 412 is controlled and managed by a computer.

[0152] Next, judgment condition 2 will be described. After determining that judgment condition 1 is satisfied, the registration unit 12 determines that judgment condition 2 is satisfied when it detects that the liquid syringe has been removed from the liquid holding unit. Detection of removal of the liquid syringe from the liquid holding unit can be achieved, for example, based on the communication state between an electronic tag attached to the liquid syringe and a reader antenna provided in the liquid holding unit. That is, the registration unit 12 can determine that the liquid syringe has been removed from the liquid holding unit when the electronic tag attached to the liquid syringe and the reader antenna provided in the liquid holding unit change from a communicable state to an incommunicable state. Alternatively, the registration unit 12 may determine that the liquid syringe has been removed from the liquid holding unit when the electronic tag attached to the liquid syringe and the reader antenna provided in the liquid holding unit change from a communicable state to an incommunicable state and this state continues for a predetermined period of time.

[0153] Next, we will explain judgment condition 3. When the registration unit 12 detects that a prefilled syringe is held in the drug solution holding unit, it monitors whether a suction operation has been performed on the drug solution syringe. If a suction operation has been performed on the drug solution syringe, it identifies the amount of suction and compares the identified amount with a predetermined threshold to determine whether judgment condition 3 is met.

[0154] The determination of whether a syringe is a prefilled syringe can be made based on whether or not liquid medicine information can be acquired from an electronic tag, for example. If the registration unit 12 can acquire liquid medicine information from the electronic tag, it can determine that the liquid medicine syringe is a prefilled syringe. In this case, an electronic tag is not attached to a non-prefilled syringe that is not filled with liquid medicine.

[0155] The detection of "that a suction operation has been performed on the liquid syringe" can be realized, for example, based on the position of a syringe drive mechanism that holds and controls the position of the plunger of the liquid syringe held in the liquid holding unit. For example, as shown in FIG. 4 , syringe drive mechanism 412 has a claw 6 for holding the plunger of the liquid syringe. A portion of the plunger of the liquid syringe engages with claw 6, thereby allowing syringe drive mechanism 412 to hold the plunger of the liquid syringe. While syringe drive mechanism 412 is holding the plunger of the liquid syringe, suction into the liquid syringe is achieved by moving syringe drive mechanism 412 in the suction direction.

[0156] In this example, the registration unit 12 detects by any means that the syringe drive mechanism 412 has held the plunger of the liquid syringe. For example, a physical button that is pressed when the plunger of the liquid syringe is held may be provided at a predetermined portion of the syringe drive mechanism 412. The registration unit 12 may then detect that the syringe drive mechanism 412 has held the plunger of the liquid syringe based on the pressed state of this physical button. Alternatively, a sensor or the like provided in the syringe drive mechanism 412 may detect that the syringe drive mechanism 412 has held the plunger of the liquid syringe.

[0157] When registering unit 12 detects that syringe drive mechanism 412 has moved in the direction of aspirating, it calculates the amount of aspirated liquid based on the amount of movement (movement distance) and the diameter of the liquid syringe. For example, registering unit 12 can calculate the amount of aspirated liquid as the product of the diameter of the liquid syringe and the amount of movement (movement distance). The diameter of the liquid syringe can be identified using the method described in judgment condition 1. Furthermore, because the position of syringe drive mechanism 412 is controlled and managed by a computer, the amount of movement (movement distance) can be identified based on the management content.

[0158] Next, a description will be given of judgment condition 4. After determining that judgment condition 3 is satisfied, if the registration unit 12 detects that the liquid syringe has been removed from the liquid holding unit, the registration unit 12 determines that judgment condition 4 is satisfied. The detection of the liquid syringe being removed from the liquid holding unit is as described in judgment condition 2.

[0159] When the liquid medicine information is acquired by the acquisition unit 11, the processing unit 13 determines whether the liquid medicine syringe held in the liquid medicine holding unit has been used based on the usage history information. That is, the processing unit 13 refers to the usage history information and checks whether usage status information indicating that the liquid medicine syringe has been used is registered in association with the identification information of the liquid medicine syringe indicated in the acquired liquid medicine information. Then, when usage status information indicating that the liquid medicine syringe has been used is registered in association with the identification information of the liquid medicine syringe indicated in the acquired liquid medicine information, the processing unit 13 determines that the liquid medicine syringe held in the liquid medicine holding unit has been used.

[0160] If the liquid syringe has been used, the processing unit 13 executes error processing. The processing unit 13 can execute error processing via an output device such as a display, a speaker, or a warning lamp. The output device may be included in the liquid injector 400, may be external to the liquid injector 400, or may be included in an external device communicatively connected to the liquid injector 400. For example, the processing unit 13 may display a message on a display indicating that the liquid syringe held in the liquid injector 400 has been used. The processing unit 13 may also output the message via a speaker or output a warning sound. The processing unit 13 may also light or flash a warning lamp.

[0161] The processing unit 13 can continue these error processes until the liquid syringe held in the liquid holding unit is removed. Detection of the removal of the liquid syringe can be realized, for example, based on the communication state between a reader antenna attached to the liquid holding unit and an electronic tag attached to the liquid syringe.

[0162] Furthermore, as an error handling procedure, processing unit 13 may lock a part of the processing of chemical liquid injector 400. While the lock is on, the processing is not executed. For example, the processing executed by injection head 410 may be locked so that the injection head does not operate.

[0163] Next, an example of the processing flow of the chemical liquid injector 400 will be described with reference to the flowchart of FIG.

[0164] When the liquid injector 400 acquires liquid information from an electronic tag attached to a liquid syringe held in the liquid holding unit (S10), it determines whether the liquid syringe has been used (S11). Specifically, the liquid injector 400 references the usage history information and checks whether usage status information indicating a used liquid syringe has been registered in association with the identification information of the liquid syringe indicated in the acquired liquid information. If usage status information indicating a used liquid syringe has been registered in association with the identification information of the liquid syringe indicated in the acquired liquid information, the liquid injector 400 determines that the liquid syringe held in the liquid holding unit has been used. On the other hand, if usage status information indicating a used liquid syringe has not been registered in association with the identification information of the liquid syringe indicated in the acquired liquid information, the liquid injector 400 determines that the liquid syringe held in the liquid holding unit has not been used.

[0165] If it is determined that the liquid syringe has been used (Yes in S11), the liquid injector 400 executes error processing (S12). For example, the liquid injector 400 may display a message on the display indicating that the liquid syringe held in the liquid injector 400 has been used, output the message via a speaker, output a warning sound via a speaker, or turn on or flash a warning lamp.

[0166] On the other hand, if it is determined that the liquid syringe has not been used (No in S11), liquid injector 400 determines whether the determination condition is met (S13). If the liquid syringe has not been used, the operator can perform a task using the liquid syringe. For example, the operator may use the liquid syringe to inject a liquid. This task performed by the operator may result in the state satisfying the determination condition.

[0167] If the liquid injection device 400 determines that the judgment conditions are met (Yes in S13), it links the identification information that identifies the liquid syringe indicated by the liquid information acquired in S10 to usage status information indicating that the liquid syringe has been used and registers this in the usage history information (S14).

[0168] <Hardware Configuration> Next, an example of the hardware configuration of chemical liquid injector 400 will be described. Each functional unit of chemical liquid injector 400 is realized by any combination of hardware and software. Those skilled in the art will understand that there are various variations in the realization method and device. The software includes programs that are pre-loaded when the device is shipped, and programs downloaded from recording media such as CDs (Compact Discs) or servers on the Internet.

[0169] FIG. 18 is a block diagram illustrating an example of the hardware configuration of a liquid injector 400. As shown in FIG. 18, the liquid injector 400 has a processor 1A, a memory 2A, an input / output interface 3A, a peripheral circuit 4A, and a bus 5A. The peripheral circuit 4A includes various modules. The liquid injector 400 does not necessarily have to have the peripheral circuit 4A. The liquid injector 400 may be composed of multiple physically and / or logically separated devices. In this case, each of the multiple devices can have the above hardware configuration.

[0170] The bus 5A is a data transmission path for the processor 1A, memory 2A, peripheral circuit 4A, and input / output interface 3A to mutually transmit and receive data. The processor 1A is, for example, a central processing unit (CPU) or a graphics processing unit (GPU). The memory 2A is, for example, a random access memory (RAM) or a read-only memory (ROM). The input / output interface 3A includes interfaces for acquiring information from input devices, external devices, external servers, external sensors, cameras, etc., and interfaces for outputting information to output devices, external devices, external servers, etc. The input / output interface 3A also includes an interface for connecting to a communication network such as the Internet. Examples of input devices include a keyboard, mouse, microphone, physical buttons, touch panel, controller, etc. Examples of output devices include a display, projection device, speaker, printer, mailer, etc. The processor 1A can issue commands to each module and perform calculations based on the results of those calculations.

[0171] <Effects> After acquiring liquid medicine information from an electronic tag attached to a liquid medicine syringe, the liquid medicine injection device 400 of this embodiment determines that the liquid medicine syringe has been used, and then links usage status information indicating that the liquid medicine syringe has been used to the identification information of the liquid medicine syringe indicated in the acquired liquid medicine information, and registers this in the usage history information.

[0172] According to the liquid injector 400, a used liquid syringe can be identified based on the registered usage history information, thereby preventing problems such as erroneous reuse of a used liquid syringe.

[0173] Furthermore, after acquiring liquid information from the electronic tag attached to the liquid syringe, the liquid injector 400 can refer to the usage history information to determine whether the liquid syringe has been used, and if so, perform error processing. This liquid injector 400 can issue an error notification if a used liquid syringe is mistakenly attached to the liquid injector 400. As a result, it is possible to prevent inconveniences such as mistakenly reusing a used liquid syringe.

[0174] Furthermore, when the remaining amount of liquid in the liquid syringe falls below a threshold, the liquid injector 400 can determine that the liquid syringe has been used. By using such a determination condition, it is possible to prevent the inconvenience of determining that a liquid syringe that has been attached to the liquid injector 400 but has not actually been used has been used.

[0175] Furthermore, when the remaining amount of liquid in the liquid syringe falls below a threshold and the liquid syringe is removed from the liquid syringe holding unit, liquid injector 400 can determine that the liquid syringe has been used. By using such a determination condition, it is possible to prevent the inconvenience of determining that the liquid syringe has been used only after the first injection is completed, for example, when the liquid syringe is being injected into the same person in multiple doses.

[0176] Furthermore, the liquid injector 400 can determine that a liquid syringe that is a prefilled syringe has been used when a predetermined amount or more has been drawn into the liquid syringe. When a predetermined amount or more has been drawn into the prefilled syringe, a predetermined amount or more of air may be mixed into the liquid syringe. Using such a liquid syringe may cause an accident. By setting such a determination condition, it is possible to manage a liquid syringe that may cause an accident as used.

[0177] Furthermore, the liquid injector 400 can determine that a prefilled liquid syringe has been used when the liquid syringe is removed from the liquid holding unit after aspirating a predetermined amount or more. If an operator intentionally aspirates the liquid syringe, it is undesirable to immediately determine that the liquid syringe has been used and make it unusable. By using such a determination condition, this inconvenience can be prevented.

[0178] Second Embodiment A liquid injector 400 according to a second embodiment uses liquid information acquired from an electronic tag attached to the liquid syringe to identify the expiration date of the liquid filled in the liquid syringe held in the liquid holding unit. If the identified expiration date has passed, the liquid injector 400 performs error processing. This is described in detail below.

[0179] 19 shows an example of a functional block diagram of the liquid injector 400 of this embodiment. As shown in the figure, the liquid injector 400 includes an acquisition unit 11 and a processing unit 13.

[0180] Liquid injector 400 may include other units that realize the basic configuration described in the section <Configuration Example of a Fluoroscopy Imaging System Including a Liquid Injector> of the first embodiment. Liquid injector 400 may also include other units described in the first embodiment and realize the functions described in the first embodiment. The functions of each unit in FIG. 19 are described below.

[0181] As in the first embodiment, the acquisition unit 11 acquires liquid medicine information from an electronic tag attached to the liquid medicine syringe held in the liquid medicine holding unit. The liquid medicine information acquired in this embodiment includes the expiration date of the liquid medicine filled in the liquid medicine syringe. The other configurations of the acquisition unit 11 are the same as those in the first embodiment.

[0182] When the acquisition unit 11 acquires the liquid medicine information, the processing unit 13 determines whether the expiration date indicated in the liquid medicine information has passed. Specifically, the processing unit 13 determines whether the expiration date has passed by comparing the current date (year, month, and day) acquired by a predetermined means with the expiration date (year, month, and day) indicated in the liquid medicine information. The means for acquiring the current date is not particularly limited, and the date may be acquired from calendar information stored in the liquid medicine injector 400 or from an external device.

[0183] If the expiration date has passed, the processing unit 13 executes error processing. The processing unit 13 can execute error processing via an output device such as a display, a speaker, or a warning lamp. The output device may be included in the liquid injector 400, may be external to the liquid injector 400, or may be included in an external device communicably connected to the liquid injector 400. For example, the processing unit 13 may display a message on a display indicating that the expiration date of the liquid syringe held in the liquid injector 400 has passed. The processing unit 13 may also output the message via a speaker or output a warning sound. The processing unit 13 may also light or flash a warning lamp.

[0184] The processing unit 13 can continue these error processes until the liquid syringe held in the liquid holding unit is removed. Detection of the removal of the liquid syringe can be realized, for example, based on the communication state between a reader antenna attached to the liquid holding unit and an electronic tag attached to the liquid syringe.

[0185] Furthermore, as an error handling procedure, processing unit 13 may lock a part of the processing of chemical liquid injector 400. While the lock is on, the processing is not executed. For example, the processing executed by injection head 410 may be locked so that the injection head does not operate.

[0186] Next, an example of the processing flow of the chemical liquid injector 400 will be described with reference to the flowchart of FIG.

[0187] When the liquid injector 400 acquires the liquid information from the electronic tag attached to the liquid syringe held in the liquid holding unit (S20), it determines whether the error condition is satisfied based on the acquired liquid information (S21). Specifically, the liquid injector 400 determines whether the expiration date of the liquid indicated in the acquired liquid information (the expiration date of the liquid syringe filled with the liquid) has passed.

[0188] If the error condition is met, i.e., if the expiration date of the liquid medicine has passed (Yes in S21), the liquid medicine injector 400 executes error processing (S22). For example, the liquid medicine injector 400 may display a message on the display indicating that the expiration date of the liquid medicine syringe held in the liquid medicine injector 400 has passed, output the message via a speaker, output a warning sound via a speaker, or turn on or flash a warning lamp.

[0189] Other configurations of the liquid injector 400 may be similar to those of the first embodiment. Furthermore, an example configuration of the fluoroscopic imaging system 1000 including the liquid injector 400 may be similar to that of the first embodiment.

[0190] The liquid medicine injection device 400 of this embodiment can acquire liquid medicine information from an electronic tag attached to a liquid medicine syringe, and then execute error processing if it determines that the expiration date of the liquid medicine indicated in the liquid medicine information has passed.

[0191] The liquid injector 400 described above can prevent the inconvenience of accidentally using expired liquid medicine. Furthermore, by making the determination based on the liquid medicine information stored in the electronic tag attached to the liquid syringe, the reliability of the determination can be improved, and more reliable error handling can be performed.

[0192] <<Third Embodiment>> A liquid injector 400 according to a third embodiment executes error processing when a predetermined operation is performed before starting liquid injection without acquiring liquid information from an electronic tag attached to a liquid syringe. This configuration achieves, for example, the following effects.

[0193] Not all liquid syringes are provided with electronic tags, and there are both liquid syringes with and without electronic tags. For example, an example of a liquid syringe with an electronic tag is a prefilled syringe, and an example of a liquid syringe without an electronic tag is a non-prefilled syringe.

[0194] Liquid injector 400 is configured to be able to hold both of these liquid syringes and perform liquid injection. That is, liquid injector 400 is configured to be able to perform both "a process of acquiring liquid information from an electronic tag attached to a liquid syringe and performing liquid injection based on the acquired liquid information" and "a process of performing liquid injection without acquiring liquid information from an electronic tag attached to a liquid syringe."

[0195] In the "process of acquiring liquid medicine information from an electronic tag attached to a liquid syringe and performing liquid medicine injection based on the liquid medicine information," it is possible to perform, for example, management of used liquid medicine syringes and various error processes as described in the first and second embodiments, various processes as described in the fourth embodiment and thereafter, and a process of registering the acquired liquid medicine information as a liquid medicine injection history so that it can be viewed later. Therefore, when a liquid medicine syringe with an electronic tag attached is held in liquid medicine injector 400, an operator or the like will naturally want to perform the "process of acquiring liquid medicine information from an electronic tag attached to a liquid medicine syringe and performing liquid medicine injection based on the liquid medicine information."

[0196] However, when communication is performed via short-range wireless communication, depending on the positional relationship between the electronic tag attached to the liquid syringe and the reader antenna of the liquid injector 400, a situation may arise in which the reader antenna cannot communicate with the electronic tag and cannot acquire liquid information, even when the liquid syringe is held in the liquid holding section. This may cause the operator to operate the liquid injector 400 without realizing this situation, resulting in the inconvenience of the liquid injector 400 performing liquid injection without acquiring liquid information from the electronic tag attached to the liquid syringe.

[0197] As with the liquid injector 400 of this embodiment, when a predetermined operation is received without obtaining liquid information from an electronic tag attached to a liquid syringe, error processing is executed to notify the operator that "a predetermined operation was performed without obtaining liquid information." As a result, the inconvenience of performing liquid injection without obtaining liquid information can be prevented.

[0198] The following describes in detail the configuration of the liquid injector 400. Fig. 19 shows an example of a functional block diagram of the liquid injector 400 of this embodiment. As shown in the figure, the liquid injector 400 has an acquisition unit 11 and a processing unit 13.

[0199] Liquid injector 400 may include other units that realize the basic configuration described in the section <Configuration Example of a Fluoroscopy Imaging System Including a Liquid Injector> of the first embodiment. Liquid injector 400 may also include other units described in the first and second embodiments and realize the functions described in the first and second embodiments. The functions of each unit in FIG. 19 are described below.

[0200] The functional configuration of the acquisition unit 11 is the same as that of the first and second embodiments.

[0201] The processing unit 13 executes error processing when it receives a specified user operation before starting liquid injection while liquid information has not been acquired from the electronic tag attached to the liquid syringe held in the liquid holding unit.

[0202] The "predetermined user operation before starting liquid injection" is, for example, an operation to start a check operation before starting liquid injection, but is not limited to this. Examples of the predetermined user operation before starting liquid injection include, but are not limited to, the "input operation to start injection via touch panel 403 and head display 415" and the "input operation on final check switch 414 of injection head 410, which is executed after the final check is completed," which were described in the section <Configuration Example of a Fluoroscopy Imaging System Including a Liquid Injector> of the first embodiment. The "input operation on final check switch 414 of injection head 410, which is executed after the final check is completed" is an example of an operation to start a check operation before starting liquid injection.

[0203] The processing unit 13 can execute error handling via an output device such as a display, a speaker, or a warning lamp. The output device may be provided in the liquid injector 400, may be external to the liquid injector 400, or may be provided in an external device communicatively connected to the liquid injector 400. For example, the processing unit 13 may display a message on a display indicating that liquid information has not been acquired from the liquid syringe. The processing unit 13 may also output the message via a speaker or output a warning sound. The processing unit 13 may also light or flash a warning lamp.

[0204] Next, an example of the chemical liquid injector 400 of this embodiment will be described. Note that this example is merely an example, and the example of the chemical liquid injector 400 of this embodiment is not limited to this example.

[0205] First, in order to clarify the features of the embodiment, the process of a comparative example that does not have the functions of chemical liquid injector 400 of this embodiment will be described with reference to the flowchart of FIG.

[0206] When the liquid injector receives a predetermined user operation before starting liquid injection (S30), it displays a screen indicating that injection is possible on the display (S31).

[0207] The predetermined user operation before starting chemical liquid injection is to input a value into the final confirmation switch of the injection head of the chemical liquid injector. After completing a series of tasks before chemical liquid injection, such as setting injection control data for the chemical liquid injector and checking for air bubbles in the extension tube, the operator inputs a value into the final confirmation switch of the injection head.

[0208] After displaying a screen indicating that injection is possible on the display, the liquid injector receives an input operation to start injection by a predetermined means (Yes in S32), and then executes liquid injection (S33). The input operation to start injection may be pressing a predetermined button provided on liquid injector 400, a predetermined input operation via touch panel 403, or any other method.

[0209] Next, an example of processing performed by the liquid injector 400 of this embodiment will be described with reference to the flowchart of FIG.

[0210] When the liquid medicine injection device 400 receives a predetermined user operation before starting liquid medicine injection (S40), it determines whether liquid medicine information has been acquired from the electronic tag attached to the liquid medicine syringe held in the liquid medicine holding section at that time (S41).

[0211] The predetermined user operation before starting liquid injection is to input information into final confirmation switch 414 (see FIG. 4) on injection head 410. After completing a series of tasks before liquid injection, such as setting injection control data for liquid injector 400 and checking for air bubbles in the extension tube, the operator inputs information into final confirmation switch 414 (see FIG. 4) on injection head 410.

[0212] If the liquid injector 400 has acquired the liquid information from the electronic tag attached to the liquid syringe held in the liquid holding unit (Yes in S41), the liquid injector 400 displays a screen indicating that injection is possible on the display (S42). Then, when the liquid injector 400 receives an input operation to start injection by a predetermined means (Yes in S43), the liquid injector 400 executes the liquid injection (S44).

[0213] On the other hand, if the liquid medicine information has not been acquired from the electronic tag attached to the liquid medicine syringe held in the liquid medicine holding unit (No in S41), the liquid medicine injector 400 executes error processing (S45). Specifically, the liquid medicine injector 400 displays a message on the display indicating that the liquid medicine information has not been acquired from the liquid medicine syringe. The liquid medicine injector 400 also displays a confirmation button (e.g., an OK button) on the display to be operated after confirming the message. After confirming the message, the operator can operate the confirmation button.

[0214] When the liquid injector 400 receives the confirmation button (Yes in S46), it displays a screen indicating that injection is possible (S47). Then, when the liquid injector 400 receives an input to start injection by a predetermined means (Yes in S48), it executes liquid injection (S44). For example, if the operator confirms the message and then decides that liquid injection can be executed without liquid information being acquired from the liquid syringe, the operator performs a predetermined input to start injection while the screen in S47 is displayed, thereby executing liquid injection. In this example, liquid injection is executed without liquid information being acquired from the liquid syringe.

[0215] On the other hand, if the operator, after checking the message, determines that it is undesirable to perform liquid injection without obtaining liquid information from the liquid syringe, he or she can avoid performing the predetermined input operation to start injection while the screen of S47 is displayed, and can instead correct the way the liquid syringe held in the liquid holding unit is held, thereby enabling communication between the reader antenna of liquid injector 400 and the electronic tag of the liquid syringe. In response to this operation, liquid injector 400 can obtain liquid information from the electronic tag of the liquid syringe held in the liquid holding unit.

[0216] When liquid injector 400 acquires liquid information from the electronic tag attached to the liquid syringe held in the liquid holding unit (Yes in S49), it cancels the predetermined user operation (input operation of final confirmation switch 414 (see FIG. 4) on injection head 410) that was performed before starting liquid injection and returns to a state waiting for the predetermined user operation (S50). In response, the display changes from the "screen indicating that injection is possible" to another screen. In other words, liquid injector 400 is no longer in an injection-ready state. As a result, the operator is no longer able to input information to start injection. To display the "screen indicating that injection is possible" again on the display, the operator must again input information on final confirmation switch 414 (see FIG. 4) on injection head 410.

[0217] In S45, after the display shows a message indicating that liquid medicine information has not been acquired from the liquid medicine syringe and a confirmation button (e.g., OK button), the operator can correct the way the liquid medicine syringe held in the liquid medicine holding unit is held, without operating the confirmation button (No in S46), to enable communication between the reader antenna of the liquid medicine injector 400 and the electronic tag of the liquid medicine syringe. In response to this operation, the liquid medicine injector 400 can acquire liquid medicine information from the electronic tag of the liquid medicine syringe held in the liquid medicine holding unit.

[0218] When liquid injector 400 acquires liquid information from the electronic tag attached to the liquid syringe held in the liquid holding unit (Yes in S51), it cancels the predetermined user operation (input operation of final confirmation switch 414 (see FIG. 4) on injection head 410) that was performed before starting liquid injection and returns to a state waiting for the predetermined user operation (S50). In response, the display changes from the "screen indicating that injection is possible" to another screen. In other words, liquid injector 400 is no longer in an injection-ready state. As a result, the operator is no longer able to input information to start injection. To display the "screen indicating that injection is possible" again on the display, the operator must again input information on final confirmation switch 414 (see FIG. 4) on injection head 410.

[0219] Other configurations of the liquid injector 400 may be similar to those of the first and second embodiments. In addition, an example configuration of the fluoroscopic imaging system 1000 including the liquid injector 400 may be similar to those of the first and second embodiments.

[0220] According to the chemical liquid injection device 400 of this embodiment, it is possible to suppress the inconvenience of performing chemical liquid injection without obtaining chemical liquid information from the electronic tag attached to the chemical liquid syringe held in the chemical liquid holding section.

[0221] Furthermore, the liquid injector 400 can execute error processing in response to an operation to start a check operation before starting liquid injection. With this liquid injector 400, error processing can be executed at the preferred timing, i.e., at the final stage before starting liquid injection.

[0222] <<Fourth Embodiment>> A liquid injector 400 according to a fourth embodiment uses liquid information acquired from an electronic tag attached to a liquid syringe to detect an improper combination of the plunger and barrel of a liquid syringe held in a liquid holding unit. The liquid injector 400 then performs error processing in response to the detection. This will be described in detail below.

[0223] 23 shows an example of a functional block diagram of the liquid injector 400 according to this embodiment. As shown in the figure, the liquid injector 400 includes an acquiring unit 11, a processing unit 13, an identifying unit 14, and a remaining amount calculating unit 15.

[0224] Liquid injector 400 may include other units that realize the basic configuration described in the section <Configuration Example of a Fluoroscopy Imaging System Including a Liquid Injector> of the first embodiment. Liquid injector 400 may also include other units described in the first to third embodiments and realize the functions described in the first to third embodiments. The functions of each unit in FIG. 23 are described below.

[0225] The functional configuration of the acquisition unit 11 is the same as in the first to third embodiments.

[0226] The identification unit 14 identifies the diameter of the liquid syringe held in the liquid holding unit. The means for identifying the diameter of the liquid syringe is the same as that described in the first embodiment, and therefore description thereof will be omitted here.

[0227] The remaining amount calculation unit 15 calculates the remaining amount of liquid in the liquid syringe based on the diameter of the liquid syringe held in the liquid holding unit and the position of the plunger position control unit that holds the plunger of the liquid syringe and controls the plunger position. The remaining amount calculation unit 15 does not measure the amount of liquid actually remaining in the liquid syringe, but calculates a theoretical value (predicted value) of the remaining amount of liquid in the liquid syringe that is determined from the diameter of the liquid syringe and the position of the syringe drive mechanism.

[0228] Specifically, the remaining amount calculation unit 15 calculates the remaining amount of liquid in the liquid syringe before liquid injection based on the diameter of the liquid syringe held in the liquid holding unit and the position before liquid injection of the plunger position control unit that holds the plunger of the liquid syringe and controls the plunger position. An example of this processing is described below.

[0229] After the operator attaches a liquid syringe including a plunger and a barrel to the liquid holding unit, the operator activates the auto-hold function of the liquid injector 400. In response, the liquid injector 400 moves the plunger position control unit (syringe drive mechanism 412 in FIG. 4 ) in a predetermined direction (the direction in which the liquid syringe is pushed in). When the plunger position control unit detects that the plunger of the liquid syringe is being held, the liquid injector 400 stops the movement of the plunger position control unit. This detection can be based on, for example, a sensor or physical button provided in the plunger position control unit, or the operation of the tab 6 (see FIG. 4 ). When the plunger position control unit holds the plunger of the liquid syringe, the tab 6 performs a predetermined operation. By detecting this operation, the plunger position control unit can detect that the plunger of the liquid syringe is being held.

[0230] The remaining amount calculation unit 15 calculates the remaining amount of liquid in the liquid syringe before liquid injection is performed based on the position of the plunger position control unit that stopped in response to the detection and the diameter of the liquid syringe. For example, an arithmetic expression for calculating the remaining amount of liquid in the liquid syringe based on the diameter of the liquid syringe and the position of the plunger position control unit is stored in advance in the liquid injector 400. The remaining amount calculation unit 15 can calculate the remaining amount of liquid in the liquid syringe using this arithmetic expression.

[0231] The processing unit 13 executes error processing when the remaining amount of the liquid in the liquid syringe before liquid injection calculated by the remaining amount calculation unit 15 differs from the amount of liquid in the liquid syringe indicated by the liquid information.

[0232] Here, the effect of the error processing will be described.

[0233] First, an inappropriate combination of the plunger and barrel of the liquid syringe held in the liquid holding unit may occur. Plungers vary in length. Therefore, if the plunger and barrel are not properly combined, a plunger that is too long or too short for a certain barrel may be combined. Performing liquid injection with such an inappropriate combination may result in an inaccurate calculation of the remaining amount of liquid in the liquid syringe. Furthermore, if a plunger shorter than the appropriate combination is combined, the plunger may come off the barrel when moved in the direction of aspirating. Furthermore, if a plunger longer than the appropriate combination is combined, the plunger may collide with the end of the barrel with great force when moved in the direction of injecting liquid, potentially resulting in damage to the plunger or barrel or an accident. Therefore, the processing unit 13 executes error processing when the plunger and barrel of the liquid syringe held in the liquid holding unit are not properly combined.

[0234] The remaining amount of liquid in the liquid syringe calculated based on the position of the plunger position control unit before the liquid injection should match the actual liquid volume in the liquid syringe. However, if the plunger and barrel of the liquid syringe held in the liquid holding unit are not properly matched, such as when a plunger longer or shorter than the appropriate plunger is combined with a certain barrel, the remaining amount of liquid in the liquid syringe calculated based on the position of the plunger position control unit before the liquid injection may not match the actual liquid volume in the liquid syringe. Therefore, the liquid holding unit 13 detects an inappropriate combination of the plunger and barrel of the liquid syringe held in the liquid holding unit based on a comparison between the remaining amount of liquid in the liquid syringe calculated based on the position of the plunger position control unit before the liquid injection and the liquid volume of the liquid syringe indicated in the liquid information. Then, the processing unit 13 executes error processing in response to this detection.

[0235] The processing unit 13 can execute error handling via an output device such as a display, a speaker, or a warning lamp. The output device may be provided in the liquid injector 400, may be external to the liquid injector 400, or may be provided in an external device communicatively connected to the liquid injector 400. For example, the processing unit 13 may display a message on the display prompting the user to check whether the plunger and barrel of the liquid syringe are properly matched. The processing unit 13 may also output the message via a speaker or sound a warning. The processing unit 13 may also light or flash a warning lamp.

[0236] The processing unit 13 can continue these error processes until the liquid syringe held in the liquid holding unit is removed. Detection of the removal of the liquid syringe can be realized, for example, based on the communication state between a reader antenna attached to the liquid holding unit and an electronic tag attached to the liquid syringe.

[0237] Furthermore, as an error handling procedure, processing unit 13 may lock a part of the processing of chemical liquid injector 400. While the lock is on, the processing is not executed. For example, the processing executed by injection head 410 may be locked so that the injection head does not operate.

[0238] Other configurations of the liquid injector 400 may be similar to those of the first to third embodiments. Also, a configuration example of the fluoroscopic imaging system 1000 including the liquid injector 400 may be similar to those of the first to third embodiments.

[0239] According to the liquid injector 400 of this embodiment, it is possible to detect an improper combination of the plunger and barrel of the liquid syringe held in the liquid holding unit and execute error processing, thereby preventing the inconvenience of performing liquid injection when the plunger and barrel of the liquid syringe held in the liquid holding unit are not properly combined.

[0240] Fifth Embodiment A liquid injector 400 according to a fifth embodiment uses liquid information acquired from an electronic tag attached to a liquid syringe to detect an improper combination between the attached adapter and the liquid syringe. The liquid injector 400 then performs error processing in response to the detection. This will be described in detail below.

[0241] 24 shows an example of a functional block diagram of the liquid injector 400 of this embodiment. As shown in the figure, the liquid injector 400 includes an acquisition unit 11, a processing unit 13, and an identification unit 14.

[0242] Liquid injector 400 may include other units that realize the basic configuration described in the section <Configuration Example of a Fluoroscopy Imaging System Including a Liquid Injector> of the first embodiment. Liquid injector 400 may also include other units described in the first to fourth embodiments and realize the functions described in the first to fourth embodiments. The functions of each unit in FIG. 24 are described below.

[0243] The functional configuration of the acquisition unit 11 is the same as in the first to fourth embodiments.

[0244] The identification unit 14 identifies the type of adapter attached to the drug solution holding unit. The drug solution holding unit can be attached with multiple types of adapters and holds the drug solution syringe via the adapter. The type of adapter can be identified using the means for identifying the adapter identification information described in the first embodiment.

[0245] The processing unit 13 executes error processing when the combination of the type of the attached adapter and the type of liquid medicine indicated in the liquid medicine information acquired by the acquisition unit 11 has not been registered in advance.

[0246] Appropriate combinations of adapter types and liquid medicine types are registered in advance in the liquid injector 400. Based on the registered information, the processing unit 13 can determine whether the combinations of adapter types and liquid medicine types are appropriate.

[0247] The processing unit 13 can execute error handling via an output device such as a display, a speaker, or a warning lamp. The output device may be provided in the liquid injector 400, may be external to the liquid injector 400, or may be provided in an external device communicably connected to the liquid injector 400. For example, the processing unit 13 may display a message on the display prompting the user to check whether the adapter and the liquid syringe are properly combined. The processing unit 13 may also output the message via a speaker or sound a warning. The processing unit 13 may also light or flash a warning lamp.

[0248] The processing unit 13 can continue these error processes until the liquid syringe held in the liquid holding unit is removed. Detection of the removal of the liquid syringe can be realized, for example, based on the communication state between a reader antenna attached to the liquid holding unit and an electronic tag attached to the liquid syringe.

[0249] Furthermore, as an error handling procedure, processing unit 13 may lock a part of the processing of chemical liquid injector 400. While the lock is on, the processing is not executed. For example, the processing executed by injection head 410 may be locked so that the injection head does not operate.

[0250] Other configurations of the liquid injector 400 may be similar to those of the first to fourth embodiments. Also, a configuration example of the fluoroscopic imaging system 1000 including the liquid injector 400 may be similar to those of the first to fourth embodiments.

[0251] According to the liquid injector 400 of this embodiment, it is possible to detect an inappropriate combination of the adapter and the liquid syringe held in the liquid holding unit and execute error processing, thereby preventing the inconvenience of performing liquid injection when the adapter and the liquid syringe held in the liquid holding unit are in an inappropriate combination.

[0252] <<Sixth Embodiment>> A liquid injector 400 according to a sixth embodiment uses liquid information acquired from an electronic tag attached to a liquid syringe to update various settings in the liquid injector 400. This will be described in detail below.

[0253] 25 shows an example of a functional block diagram of the liquid injector 400 of this embodiment. As shown in the figure, the liquid injector 400 includes an acquisition unit 11, a processing unit 13, and a setting unit 16.

[0254] Liquid injector 400 may include other units that realize the basic configuration described in the section <Configuration Example of a Fluoroscopy Imaging System Including a Liquid Injector> of the first embodiment. Liquid injector 400 may also include other units described in the first to fifth embodiments and realize the functions described in the first to fifth embodiments. The functions of each unit in FIG. 25 are described below.

[0255] The functional configuration of the acquisition unit 11 is the same as in the first to fifth embodiments.

[0256] The processing unit 13 and the setting unit 16 can execute at least one of the following update processes 1 and 2.

[0257] "Update Process 1" The setting unit 16 sets a pressure limit in the liquid injector 400 based on a user input. The set pressure limit is stored in the liquid injector 400. The liquid injector 400 then performs liquid injection at a pressure equal to or lower than the set pressure limit.

[0258] The processing unit 13 compares the withstand pressure value of the liquid syringe indicated in the liquid information acquired by the acquisition unit 11 with the pressure limit currently set in the liquid injector 400. If the withstand pressure value of the liquid syringe indicated in the liquid information acquired by the acquisition unit 11 is lower than the pressure limit currently set, the processing unit 13 updates the pressure limit setting to a value equal to or lower than the withstand pressure value of the liquid syringe. For example, the processing unit 13 may update the pressure limit setting to the withstand pressure value of the liquid syringe, or may update the pressure limit setting to a value obtained by subtracting a predetermined correction value from the withstand pressure value of the liquid syringe. The correction value is a value that is set in advance.

[0259] If the pressure resistance value of the liquid syringe indicated by the liquid information acquired by the acquisition unit 11 is greater than the pressure limit set at that time, the processing unit 13 does not change the set value of the pressure limit and maintains the state as it is.

[0260] Furthermore, if the liquid medicine information acquired by the acquisition unit 11 does not indicate the pressure resistance value of the liquid medicine syringe, the processing unit 13 can maintain the pressure limit setting value as is without changing it.

[0261] It should be noted that even after the pressure limit setting value has been updated based on the liquid medicine information acquired by the acquisition unit 11, the pressure limit setting value may be updated by an operation by the operator.

[0262] When the processing unit 13 has performed the update, it can notify the operator of the update via an output device such as a display, a speaker, or a warning lamp.

[0263] The liquid injector 400 will perform liquid injection at a pressure equal to or lower than the updated pressure limit.

[0264] "Update Process 2" The remaining amount calculation unit 15 sets the amount of iodine in the liquid injector 400 based on information input by the user or obtained from an external device (such as the RIS 100). The set amount of iodine is stored in the liquid injector 400. The liquid injector 400 calculates at least one of the injection rate and injection amount for liquid injection based on the set amount of iodine. This calculation can be achieved using well-known technology. The liquid injector 400 then performs liquid injection at the calculated injection rate and injection amount.

[0265] The processing unit 13 compares the amount of iodine indicated in the liquid medicine information acquired by the acquisition unit 11 with the amount of iodine currently set in the liquid medicine injector 400. If the amount of iodine indicated in the liquid medicine information acquired by the acquisition unit 11 differs from the amount of iodine currently set in the liquid medicine injector 400, the processing unit 13 updates the set value of the amount of iodine to the amount of iodine indicated in the liquid medicine information.

[0266] The liquid injector 400 recalculates at least one of the injection rate and injection amount based on the updated iodine amount. The liquid injector 400 then performs the liquid injection using the recalculated injection rate and injection amount. After updating the set value of the iodine amount based on the liquid information acquired by the acquisition unit 11, the liquid injector 400 can control the set value of the iodine amount so that it cannot be changed. In this case, the set value of the iodine amount is fixed at the updated value (the value indicated by the liquid information). By calculating the injection rate and injection amount based on the iodine amount indicated by the liquid information acquired from the electronic tag attached to the liquid syringe and then performing the liquid injection, the inconvenience of calculating the injection rate and injection amount based on an incorrect iodine amount can be reduced. As a result, optimal contrast images can be captured, leading to improved quality of contrast examinations.

[0267] When the processing unit 13 has performed the update, it can notify the operator of the update via an output device such as a display, a speaker, or a warning lamp.

[0268] Other configurations of the liquid injector 400 may be similar to those of the first to fifth embodiments. In addition, a configuration example of the fluoroscopic imaging system 1000 including the liquid injector 400 may be similar to those of the first to fifth embodiments.

[0269] According to the liquid injector 400 of this embodiment, liquid information acquired from an electronic tag attached to the liquid syringe can be used to update various settings in the liquid injector 400. With such a liquid injector 400, various settings in the liquid injector 400 can be updated to appropriate values ​​based on the liquid information acquired from the electronic tag attached to the liquid syringe, without any user operation.

[0270] <<Seventh Embodiment>> A chemical liquid injector 400 according to a seventh embodiment includes a configuration for improving communication between a reader antenna attached to a chemical liquid holding unit and an electronic tag attached to a chemical liquid syringe held in the chemical liquid holding unit. This will be described in detail below.

[0271] 3 and 4 show an example of the external configuration of the chemical liquid injector 400. FIG.

[0272] 26 and 27 show an example of the external configuration of chemical liquid injector 400 with part of the cover removed to allow the internal structure to be seen. Fig. 26 is a perspective view, and Fig. 27 is a top view.

[0273] 3 and 4 and the chemical liquid injector 400 shown in FIGS. 26 and 27 are both examples of the external configuration of the chemical liquid injector 400, but are different from each other. The configuration of the chemical liquid injector 400 shown in FIGS. 3 and 4 and the configuration of the chemical liquid injector 400 shown in FIGS. 26 and 27 are basically the same, but there are some differences between them, such as the external shape of the syringe drive mechanism 412. The chemical liquid injector 400 of this embodiment can employ any of the configurations of the examples.

[0274] As shown in FIGS. 26 and 27, the chemical liquid injector 400 has a first component part 7, a second component part 9, and a third component part 8.

[0275] The first component 7 has a liquid medicine holding portion 1. The liquid medicine holding portion 1 has a configuration (shape, size, etc.) for holding a liquid medicine syringe. The liquid medicine holding portion 1 can hold the liquid medicine syringe via an adapter 4. The liquid medicine holding portion 1 has a fitting receiving portion into which the liquid medicine syringe or the adapter fits. The fitting receiving portion is composed of a groove or member of a predetermined shape and size.

[0276] The drug solution holding unit 1 is made of a metal. For example, the drug solution holding unit 1 is made of a metal such as aluminum or an aluminum alloy (e.g., an Al-Si alloy). By making the drug solution holding unit 1 out of a metal with excellent thermal conductivity, it becomes easier to increase the temperature of the drug solution holding unit 1. Then, the drug solution holding unit 1 can be heated with a heater (not shown), and the drug solution syringe held in the drug solution holding unit 1 can be warmed.

[0277] A reader antenna 416 is attached to the liquid medicine holding portion 1. The reader antenna 416 performs short-range wireless communication with an electronic tag 810 (see FIG. 4 ) attached to the liquid medicine syringe 800 held in the liquid medicine holding portion 1, and acquires the liquid medicine information recorded in the electronic tag 810.

[0278] Second component 9 has syringe drive mechanism 412 that holds the plunger of liquid syringe 800 held in liquid holding section 1 and drives liquid syringe 800. A part of syringe drive mechanism 412 protrudes from second component 9, and performs a stroke motion in which the protruding part extends and retracts. By performing this stroke motion while holding the plunger of liquid syringe 800, an injection motion or aspiration motion of the liquid is realized. This stroke motion is realized using mechanical energy generated by an electric motor or the like.

[0279] The third component 8 has a support member 3. In the illustrated example, three support members 3 are shown, but the number is not limited to this. The third component 8 may have one support member 3, two support members 3, or four or more support members 3.

[0280] The support member 3 connects the first component part 7 and the second component part 9 and physically connects the first component part 7 and the second component part 9 .

[0281] The support member 3 is made of a metal, such as stainless steel, and functions as an electrical connection member that electrically connects the chemical solution holding unit 1 and the potential clamp unit.

[0282] The potential clamping unit is a part where the potential is fixed, such as a so-called ground. The configuration of the potential clamping unit can be realized using widely known technology. The potential clamping unit may be provided at any position within the chemical solution injector 400. Alternatively, the chemical solution injector 400 may be electrically connected to an externally provided potential clamping unit (such as the earth of an electrical outlet). The chemical solution holding unit 1 is electrically connected to the potential clamping unit via the support member 3. As a result, the potential of the chemical solution holding unit 1 is also fixed.

[0283] The method for electrically connecting the support member 3 and the potential clamping unit is not particularly limited and can be realized using widely known techniques. For example, the support member 3 and the potential clamping unit may be electrically connected via a cable. Alternatively, the support member 3 and the potential clamping unit may be electrically connected via a member made of a conductor (a material that conducts electricity) among the members that make up the chemical solution injector 400.

[0284] 26 and 27 , each of the plurality of support members 3, which are separated from one another, is configured to physically connect the first component 7 and the second component 9, and also electrically connect the chemical solution holding unit 1 and the potential clamping unit, so that even if a problem occurs in the electrical connection through one of the plurality of support members 3, the chemical solution holding unit 1 and the potential clamping unit can be electrically connected via another support member 3. As a result, even if a problem occurs in the electrical connection through one of the plurality of support members 3, the potential of the chemical solution holding unit 1 can be fixed.

[0285] The effects of this embodiment will now be described. First, for the purpose of warming the liquid syringe 800 held in the liquid holding portion 1, the liquid injector 400 of this embodiment is made of metal.

[0286] Then, the reader antenna 416 is attached to the chemical solution holding unit 1 made of metal for use, but if the potential of the chemical solution holding unit 1 to which the reader antenna 416 is attached remains floating, communication between the reader antenna 416 attached to the chemical solution holding unit 1 and the electronic tag 810 attached to the chemical solution syringe 800 held in the chemical solution holding unit 1 may become unstable. Then, if the potential of the chemical solution holding unit 1 to which the reader antenna 416 is attached is fixed, communication between the reader antenna 416 attached to the chemical solution holding unit 1 and the electronic tag 810 attached to the chemical solution syringe 800 held in the chemical solution holding unit 1 becomes good.

[0287] The liquid medicine injection device 400 of this embodiment fixes the electric potential of the liquid medicine holding section 1 to which the reader antenna 416 is attached, thereby improving communication between the reader antenna 416 attached to the liquid medicine holding section 1 and the electronic tag 810 attached to the liquid medicine syringe 800 held in the liquid medicine holding section 1.

[0288] Furthermore, the chemical solution injector 400 of this embodiment achieves electrical connection between the chemical solution holding unit 1 and the potential clamping unit using components included in the chemical solution injector 400, specifically, components (support members 3) that physically connect certain components to other components. In this way, by achieving electrical connection between the chemical solution holding unit 1 and the potential clamping unit using components necessary for the configuration of the chemical solution injector 400, a simple configuration can be achieved that eliminates unnecessary components. As a result, it is advantageous in terms of cost, etc.

[0289] Here, a modification of the chemical liquid injector 400 of this embodiment will be described.

[0290] The chemical solution injector 400 may achieve electrical connection between the chemical solution holding unit 1 and the potential clamping unit without using the support member 3. For example, a cable may be directly connected to the chemical solution holding unit 1, and this cable may be electrically connected to the potential clamping unit without using the support member 3.

[0291] As another modification, the reader antenna 416 may be attached to the drug solution holding part 1 with a ferrite sheet 417 sandwiched therebetween. The applicable frequency of the ferrite sheet 417 is, for example, 13.56 MHz, and the thickness is 0.25 mm or more.

[0292] Other configurations of the liquid injector 400 may be similar to those of the first to sixth embodiments. Furthermore, a configuration example of the fluoroscopic imaging system 1000 including the liquid injector 400 may be similar to those of the first to sixth embodiments.

[0293] <<Modifications>> Modifications applicable to the first to seventh embodiments will be described below. Note that one or more of the following modifications may be applied. The same effects as those of the first to seventh embodiments can be achieved in these modifications as well.

[0294] <First Modification> As explained in the section <Configuration Example of a Fluoroscopy Imaging System Including a Chemical Liquid Injector> of the first embodiment, the chemical liquid injector 400 generates injection history data consisting of the operation history of the syringe drive mechanism 412 corresponding to the injection condition data, and transmits the generated injection history data to the PACS 300 to store it together with the fluoroscopic image data.

[0295] In the first modification, the liquid injector 400 can store, in the PACS 300, part or all of the liquid information acquired from the electronic tag attached to the liquid syringe held in the liquid holding unit, in the injection history data. This configuration makes it possible to review the liquid information later.

[0296] <Second Modification> As explained in the section <Configuration Example of a Fluoroscopy Imaging System Including a Chemical Liquid Injector> of the first embodiment, the chemical liquid injector 400 generates injection history data consisting of the operation history of the syringe drive mechanism 412 corresponding to the injection condition data, and transmits the generated injection history data to the PACS 300 to store it together with the fluoroscopic image data.

[0297] In the second modification, in addition to or instead of storing the injection history data in the PACS, the liquid injector 400 stores the injection history data in its own storage device. This configuration allows the operator to read and view past injection history data from the liquid injector 400.

[0298] <Third Modification> In the third modification, the liquid medicine injection device 400 turns off the auto-return function when the prefilled syringe is held in the liquid medicine holding section, i.e., when liquid medicine information is acquired from the electronic tag attached to the liquid medicine syringe held in the liquid medicine holding section.

[0299] The auto-return function is a function that automatically returns the position of the syringe drive mechanism 412 (the position that changes depending on the stroke operation) to a predetermined position in response to a user operation (for example, pressing a predetermined button). The predetermined position is registered in advance.

[0300] When the auto-return function is ON, when the liquid injection device 400 receives a specified user operation (e.g., pressing a specified button), it automatically returns the position of the syringe drive mechanism 412 (the position that changes depending on the stroke operation) to a specified position.

[0301] On the other hand, when the auto-return function is OFF, even if a predetermined user operation (e.g., pressing a predetermined button) is received, chemical liquid injector 400 does not automatically return the position of syringe drive mechanism 412 (the position that changes depending on the stroke operation) to the predetermined position. In this case, even if a predetermined user operation (e.g., pressing a predetermined button) is received, the position of syringe drive mechanism 412 does not change.

[0302] The auto-return function is a function that is used when a non-prefilled syringe is held in the drug solution holding section and when suction is performed to fill the syringe with drug solution, and is not a function that is used when a prefilled syringe is held in the drug solution holding section. If the auto-return function is used incorrectly when a prefilled syringe is held in the drug solution holding section, problems such as air getting into the syringe may occur.

[0303] By turning off the auto-return function when the prefilled syringe is held in the drug solution holding section, it is possible to reduce inconveniences that may arise when an operator accidentally starts the auto-return function while the prefilled syringe is held in the drug solution holding section.

[0304] <Fourth Variant> In the fourth variant, the liquid injection device 400 executes error processing if the liquid name (product name) included in the imaging order data acquired from the RIS 100 does not match the liquid name included in the liquid information acquired from the electronic tag attached to the liquid syringe held in the liquid holding unit.

[0305] The liquid injector 400 can execute error handling via an output device such as a display, a speaker, or a warning lamp. The output device may be provided in the liquid injector 400, may be external to the liquid injector 400, or may be provided in an external device communicatively connected to the liquid injector 400. For example, the liquid injector 400 may display a message on a display indicating that the liquid name (product name) in the imaging order data does not match the liquid name in the liquid syringe held in the liquid injector 400. The liquid injector 400 may also output the message via a speaker or a warning sound. The processing unit 13 may also light or flash a warning lamp.

[0306] Furthermore, the liquid injector 400 may be locked to prevent liquid injection from being performed. When locked, the liquid injector 400 will not perform liquid injection even if it receives an instruction to start liquid injection from the operator.

[0307] <Fifth Modification> In the fifth modification, the liquid injector 400 can continue the process for liquid injection even if at least a part of the liquid information acquired from the electronic tag attached to the liquid syringe held in the liquid holding unit is corrupted. The liquid injector 400 can perform the process for liquid injection by substituting information acquired from an external device or information input by the user for the corrupted information.

[0308] In the sixth modification, when a liquid syringe determined to be used is held in the liquid holding unit, the liquid injector 400 enables the use of the auto-return function. If an operation of aspirating a predetermined amount or more of liquid into the liquid syringe is performed, the liquid injector 400 controls the liquid syringe so that the liquid injection process cannot be performed.

[0309] <Seventh Modification> In the seventh modification, when a liquid syringe determined to be used is held in the liquid holding unit, liquid injector 400 allows the operator to manually adjust the position (the position that changes depending on the stroke operation) of syringe drive mechanism 412. Then, when an operation of aspirating a predetermined amount or more of liquid into the liquid syringe is performed, liquid injector 400 controls the liquid syringe so that the liquid injection process cannot be performed.

[0310] In the eighth modification, when liquid injector 400 acquires liquid information from an electronic tag attached to a liquid syringe held in a liquid holding unit, liquid injector 400 identifies the volume of the liquid based on the liquid information. Liquid injector 400 then automatically moves the position of syringe drive mechanism 412 (the position that changes depending on the stroke) to a predetermined position determined based on the identified volume.

[0311] Liquid injector 400 positions syringe drive mechanism 412 at a position where the theoretical remaining amount of liquid in the liquid syringe reaches a predetermined value.

[0312] The predetermined value is preferably a value larger than the volume of the liquid medicine, and is preferably a value slightly larger than the volume of the liquid medicine. For example, the predetermined value is "the volume of the liquid medicine in the liquid syringe + α." α may be a predetermined fixed value, or may be a value that varies depending on the volume, such as M% of the volume.

[0313] The theoretical value of the remaining amount of liquid in the liquid syringe is calculated based on the diameter of the liquid syringe held in the liquid holding portion and the position (the position that changes depending on the stroke operation) of the syringe drive mechanism 412. Details are as described in the first and fourth embodiments.

[0314] According to this modified example, when a liquid syringe with an electronic tag is held in the liquid holding section, the position of the syringe driving mechanism 412 (the position that changes depending on the stroke operation) can be automatically positioned to an appropriate position (near the plunger) that is adjusted for each held liquid syringe.

[0315] <Ninth Modification> In the ninth modification, when the liquid injector 400 acquires liquid information from an electronic tag attached to a liquid syringe held in a liquid holding unit, the liquid injector 400 stores various data in a nonvolatile storage device of the liquid injector 400. The various data is some or all of the liquid information, information acquired from an external device, and information input by an operator.

[0316] For example, upon completion of the injection process, the liquid medicine injection device 400 can generate injection history data consisting of the operation history of the syringe drive mechanism 412 corresponding to the injection condition data, and store the generated injection history data in the non-volatile memory device of the liquid medicine injection device 400.

[0317] When the same syringe is used repeatedly for injection, the liquid injector 400 can overwrite and store new injection history data over previous injection history data.

[0318] The injection history data includes the usage status of the liquid syringe (whether it has been used or not), the remaining amount, the check code, the date of use, the time of use (hours, minutes), and the like.

[0319] <Tenth Modification> In the tenth modification, the liquid injector 400 compares the "type of liquid medicine with a history of side effects" indicated in the imaging order data with the type (product name) of liquid medicine indicated in the liquid medicine information acquired from the electronic tag attached to the liquid medicine syringe. If the data match, the liquid injector 400 can execute a warning process (e.g., outputting a warning sound, displaying warning information on a display, turning on / off a warning lamp, etc.). Furthermore, if the data match, the liquid injector 400 can control itself not to perform liquid medicine injection. This liquid injector 400 can effectively prevent the inconvenience of erroneously injecting a liquid medicine with a history of side effects.

[0320] <Eleventh Modification> In the above-described embodiment, an example in which an electronic tag is attached to a prefilled syringe has been described. In this modification, an electronic tag is also attached to a non-prefilled syringe. The electronic tag attached to the non-prefilled syringe is mainly used for writing information. In this modification, the liquid injection device 400 registers usage status information indicating "used" in the electronic tag attached to the non-prefilled syringe when the liquid injection device 400 satisfies the determination condition for determining that the liquid syringe is used. Then, when the liquid injection device 400 holds a liquid syringe in which usage status information indicating "used" is registered in the electronic tag, it can execute the above-described "error processing in the case of being used." According to this modification, the inconvenience of erroneous reuse of a non-prefilled syringe can be suppressed.

[0321] Additionally, the liquid injector 400 may register usage status information indicating "used" in an electronic tag attached to the non-prefilled syringe when a predetermined time has passed since the non-prefilled syringe was held in the liquid drug holding unit. In this case, it is possible to prevent the use of a liquid drug that has been filled into the non-prefilled syringe for a predetermined time and has problems with freshness or hygiene.

[0322] Alternatively, the liquid injector 400 may acquire identification information from an electronic tag attached to the non-prefilled syringe via the reader antenna 416, and when the liquid syringe satisfies the criteria for determining that it has been used, register usage status information indicating "used" linked to the identification information from the acquired electronic tag in the usage history information. As described above, the usage history information is recorded in a storage device or electronic tag provided within the liquid injector 400, or in a storage device provided within another device such as the PACS 300, RIS 100, or HIS 900. In this example, the liquid injector 440 may not write information to the electronic tag attached to the non-prefilled syringe, but may instead record various information linked to the identification information from the electronic tag in another device.

[0323] This modification is a modification of the configuration of the fluoroscopic imaging system including the liquid injector. The control box 500 may be connected to the PACS 300, the CT scan 200, the RIS 100, the HIS 900, an accounting system, etc. via a network or by direct wiring.

[0324] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above-described embodiments. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure. Furthermore, each embodiment can be combined with other embodiments as appropriate.

[0325] In addition, in the flowcharts used in the above description, multiple steps (processes) are described in order. However, the order of the steps performed in each embodiment is not limited to the order described. In each embodiment, the order of the steps shown in the drawings can be changed as long as it does not cause any problems in terms of the content.

[0326] Some or all of the above embodiments may be described as, but are not limited to, the following notes. 1. A chemical liquid injector having: an acquisition unit that acquires chemical liquid information from a data carrier attached to a chemical liquid syringe held in a chemical liquid holding unit; and a registration unit that, in response to a determination condition being met after acquiring the chemical liquid information, associates usage status information indicating that the chemical liquid syringe has been used with identification information of the chemical liquid syringe indicated by the chemical liquid information and registers the linked usage status information in usage history information. 2. The chemical liquid injector according to 1, wherein the usage history information is recorded in at least one of a storage device provided within the chemical liquid injector and the data carrier attached to the chemical liquid syringe. 3. The chemical liquid injector according to 1 or 2, wherein the determination condition is that the remaining amount of chemical liquid in the chemical liquid syringe has fallen below a threshold, or that the chemical liquid syringe has been removed from the chemical liquid holding unit after the remaining amount of chemical liquid in the chemical liquid syringe has fallen below a threshold. 4. The liquid injection device according to any one of 1 to 3, wherein the determination condition is that a predetermined amount or more has been drawn into the liquid syringe that is a prefilled syringe, or that the liquid syringe that is a prefilled syringe has been removed from the liquid holding unit after a predetermined amount or more has been drawn into the liquid syringe. 5. The liquid injection device according to any one of 1 to 4, wherein the liquid injection device has a processing unit that, when the liquid information is acquired, determines whether the liquid syringe held in the liquid holding unit has been used based on the usage history information, and executes error processing if it has been used. 6. The liquid injection device according to any one of 1 to 5, wherein the liquid information is acquired, determines whether the expiration date indicated in the liquid information has passed, and executes error processing if it has passed the expiration date. 7. The liquid injection device according to any one of 1 to 6, wherein the processing unit executes error processing if a predetermined user operation is received before liquid injection starts, while the liquid information has not been acquired from the data carrier attached to the liquid syringe held in the liquid holding unit. 8. 8. The liquid injector according to 7, wherein the predetermined user operation is an operation for starting a confirmation operation before starting liquid injection.9. The chemical liquid injector according to any one of 1 to 8, comprising: an identifying unit that identifies the diameter of the chemical liquid syringe held in the chemical liquid holding unit; a remaining amount calculating unit that calculates the remaining amount of chemical liquid in the chemical liquid syringe based on the diameter of the chemical liquid syringe held in the chemical liquid holding unit and the position before chemical liquid injection of a plunger position control unit that holds the plunger of the chemical liquid syringe and controls the plunger position; and a processing unit that executes error processing if the calculated remaining amount of chemical liquid in the chemical liquid syringe differs from the amount of chemical liquid in the chemical liquid syringe indicated in the chemical liquid information. 10. The chemical liquid holding unit is capable of attaching multiple types of adapters, and comprises: an identifying unit that holds the chemical liquid syringe via the adapter and identifies the type of the attached adapter; and a processing unit that executes error processing if the combination of the type of attached adapter and the type of chemical liquid indicated in the chemical liquid information has not been registered in advance. 11. 11. The liquid injection device according to any one of 1 to 10, comprising: a setting unit that sets a pressure limit based on user input; and a processing unit that, when a withstand pressure value of the liquid syringe indicated in the liquid information is lower than the pressure limit set at that time, updates the set value of the pressure limit to be equal to or lower than the withstand pressure value of the liquid syringe. 12. The liquid injection device according to any one of 1 to 11, comprising: a setting unit that sets an amount of iodine based on user input or information acquired from an external device; and a processing unit that, when the amount of iodine indicated in the liquid information differs from the amount of iodine set at that time, updates the set value of the amount of iodine to the amount of iodine indicated in the liquid information. 13. A processing method for a liquid injection device, comprising: one or more computers acquiring liquid information from a data carrier attached to a liquid syringe held in a liquid holding unit; and, when a determination condition is satisfied after acquiring the liquid information, linking usage status information indicating that the liquid syringe has been used to identification information indicated in the liquid information and registering the linked information in usage history information.14. A program causing a computer to function as: an acquisition means for acquiring liquid medicine information from a data carrier attached to a liquid medicine syringe held in a liquid medicine holding unit; and a registration means for, in accordance with a determination condition being met after acquiring the liquid medicine information, linking usage status information indicating that the liquid medicine syringe has been used to identification information of the liquid medicine syringe indicated in the liquid medicine information and registering the link in usage history information. 15. A liquid medicine injector comprising: a liquid medicine holding unit made of metal and holding a liquid medicine syringe; a reader antenna for short-range wireless communication attached to the liquid medicine holding unit; and an electrical connection member that electrically connects the liquid medicine holding unit and a potential fixing unit. 16. The liquid medicine injector according to 15, comprising: a first component having the liquid medicine holding unit; a second component having a syringe drive mechanism that holds the plunger of the liquid medicine syringe held in the liquid medicine holding unit and drives the liquid medicine syringe; and a third component that physically connects the first component and the second component, wherein the third component is made of metal and functions as the electrical connection member. 17. The chemical solution injector according to 15 or 16, wherein the third component has a plurality of support members separated from one another, each of the plurality of support members physically connecting the first component and the second component, and the plurality of support members are made of metal and function as the electrical connecting members.

[0327] Some or all of Supplements 2 to 12 that are dependent on the liquid injector of Supplement 1 described above may also be dependent on the processing method of the liquid injector of Supplement 13 and the program of Supplement 14 in the same dependent relationship as Supplement 1 and Supplements 2 to 12. Furthermore, within the scope of each of the above-described embodiments, some or all of the configurations described as Supplements may be realized in various hardware, software, various recording means for recording software, or systems.

[0328] This application claims priority based on Japanese Patent Application No. 2024-146418, filed August 28, 2024, the disclosure of which is incorporated herein by reference in its entirety.

[0329] REFERENCE SIGNS LIST 1 Liquid medicine holding unit 3 Support member 4 Adapter 6 Claw 7 First component 8 Third component 9 Second component 11 Acquisition unit 12 Registration unit 13 Processing unit 14 Identification unit 15 Remaining amount calculation unit 16 Setting unit 100 RIS 101 Order management unit 102 Order selection unit 103 Integrated control unit 200 CT scanner 201 Fluoroscopy imaging unit 210 Imaging control unit 211 Request transmission unit 212 Order reception unit 213 Imaging control unit 214 Data assignment unit 215 Image transmission unit 300 PACS 400 Liquid medicine injector 401 Injection control unit 402 Main operation unit 403 Touch panel 404 Controller unit 405 Computer unit 406 Communication I / F 410 Injection execution head 411 DESCRIPTION OF SYRINGE 1 Syringe holding mechanism 412 Syringe drive mechanism 413 Sub-operation unit 414 Final confirmation switch 415 Head display 416 Reader antenna 417 Ferrite sheet 500 Control box 501 Computer unit 502 Communication I / F 511 Acquisition intermediary unit 514 History transfer unit 600 Image viewing device 601 Computer unit 602 Display unit 603 Controller unit 611 Data reading unit 612 Data display unit 700-706 Communication network 800 Liquid syringe 810 Electronic tag 900 HIS 901 Medical record management unit 902 Accounting processing unit 1000 Fluoroscopic imaging system 1A Processor 2A Memory 3A Input / output I / F 4A Peripheral circuit 5A Bus

Claims

an acquisition unit that acquires liquid medicine information from a data carrier attached to the liquid medicine syringe held in the liquid medicine holding unit; a registration unit that, in response to a determination condition being satisfied after acquiring the liquid medicine information, associates usage status information indicating that the liquid medicine syringe has been used with identification information of the liquid medicine syringe indicated by the liquid medicine information and registers the associated usage status information in usage history information; A chemical liquid injection device having the same. 　 The usage history information is 2. The liquid injector according to claim 1, wherein the data is recorded in at least one of a storage device provided within the liquid injector and the data carrier attached to the liquid syringe. 　 The determination condition is: The remaining amount of the liquid in the liquid syringe has fallen below a threshold value, or the liquid syringe is removed from the liquid holding unit after the remaining amount of the liquid in the liquid syringe has become equal to or less than a threshold; 2. The chemical liquid injector according to claim 1, wherein: 　 The determination condition is: A predetermined amount or more has been drawn into the liquid syringe, which is a prefilled syringe; or the liquid syringe being a prefilled syringe is removed from the liquid holding portion after aspirating a predetermined amount or more of the liquid; 2. The chemical liquid injector according to claim 1, wherein: 　 The liquid injection device of claim 1, further comprising a processing unit that, when the liquid information is acquired, determines whether the liquid syringe held in the liquid holding unit has been used based on the usage history information, and executes error processing if the liquid syringe has been used.

2. The liquid injector according to claim 1, further comprising a processing unit that, when the liquid information is acquired, determines whether the expiration date indicated in the liquid information has passed, and executes error processing if the expiration date has passed. 　 The liquid medicine injection device according to claim 1, further comprising a processing unit that executes error processing when a predetermined user operation is received before starting liquid medicine injection while the liquid medicine information has not been acquired from the data carrier attached to the liquid medicine syringe held in the liquid medicine holding unit. 　 The liquid injector according to claim 7 , wherein the predetermined user operation is an operation to start a confirmation operation before starting liquid injection. 　 an identification unit that identifies the diameter of the liquid syringe held in the liquid holding unit; a remaining amount calculation unit that calculates a remaining amount of the liquid in the liquid syringe based on a diameter of the liquid syringe held in the liquid holding unit and a position before liquid injection of a plunger position control unit that holds the plunger of the liquid syringe and controls the plunger position; a processing unit that executes error processing when the calculated remaining amount of the liquid in the liquid syringe differs from the amount of the liquid in the liquid syringe indicated by the liquid information; The chemical liquid injector according to claim 1 , further comprising: 　 The liquid medicine holding section is capable of attaching a plurality of types of adapters and holds the liquid medicine syringe via the adapters. an identification unit for identifying the type of the attached adapter; a processing unit that executes error processing when a combination of the type of the attached adapter and the type of the liquid medicine indicated by the liquid medicine information has not been registered in advance; The chemical liquid injector according to claim 1 , further comprising: 　 a setting unit that sets the pressure limit based on user input; a processing unit that updates the set value of the pressure limit to a value equal to or less than the withstand pressure value of the liquid syringe when the withstand pressure value of the liquid syringe indicated by the liquid information is smaller than the pressure limit set at that time; The chemical liquid injector according to claim 1 , further comprising: 　 a setting unit that sets the amount of iodine based on information input by a user or acquired from an external device; a processing unit that updates the set value of the iodine amount to the iodine amount indicated by the liquid medicine information when the iodine amount indicated by the liquid medicine information is different from the iodine amount set at that time; 2. The chemical liquid injector according to claim 1, comprising: 　 One or more computers Acquiring liquid medicine information from a data carrier attached to the liquid medicine syringe held in the liquid medicine holding section; A processing method for a liquid medicine injection device that, when a judgment condition is met after acquiring the liquid medicine information, links usage status information indicating that the liquid medicine syringe has been used to the identification information of the liquid medicine syringe indicated in the liquid medicine information and registers the linked information in usage history information. 　 Computer, an acquiring means for acquiring liquid medicine information from a data carrier attached to the liquid medicine syringe held in the liquid medicine holding section; a registration means for registering, in use history information, usage status information indicating that the liquid syringe has been used, in association with identification information of the liquid syringe indicated by the liquid information, in response to a determination condition being satisfied after the liquid information is acquired; A program that functions as a a liquid medicine holding portion made of metal and configured to hold a liquid medicine syringe; a reader antenna for short-range wireless communication attached to the drug solution holding portion; an electrical connection member that electrically connects the chemical solution holding unit and the potential fixing unit; A chemical liquid injection device having the same. 　 a first component having the drug solution holding portion; a second component having a syringe drive mechanism that holds a plunger of the liquid syringe held in the liquid holding portion and drives the liquid syringe; a third component that physically connects the first component and the second component; and 16. The chemical liquid injector according to claim 15, wherein the third component is made of metal and functions as the electrical connection member. 　 the third component has a plurality of support members spaced apart from one another; each of the plurality of support members physically connecting the first component and the second component; 16. The chemical liquid injector according to claim 15, wherein the plurality of support members are made of metal and function as the electrical connection members.

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