JP5175487B2 - Safety assurance support system and medical diagnostic apparatus incorporating the system - Google Patents

Description

  The present invention incorporates a safety ensuring support system and a system for supporting safety ensuring that maintenance and inspection work is normally performed and the medical diagnostic apparatus is used safely when performing maintenance and inspection of the medical diagnostic apparatus. The present invention relates to a medical diagnostic apparatus.

  When a medical diagnostic apparatus in a medical institution is maintained and inspected, as a general rule, the medical diagnostic apparatus subject to maintenance and inspection is stopped. For this reason, the maintenance center that normally conducts inspection and maintenance prior to carrying out maintenance inspections communicates with the medical institution that maintenance inspections are to be performed, adjusts the work schedule, and does not want to operate the medical diagnostic equipment during maintenance inspections. , Requesting a medical institution, and then starting maintenance and inspection.

  Furthermore, when performing such maintenance and inspection, for example, an operator places a pylon around the medical diagnosis apparatus to be subjected to maintenance or inspection, or a medical diagnosis apparatus in order to ensure safety during work on site. The person who is not the person concerned is not approached by enclosing with a string etc. In addition, by applying a screen saver or screen lock to the display means of the medical diagnostic apparatus, an operator can be prevented from operating the medical diagnostic apparatus by mistake during maintenance inspection.

Furthermore, in recent years, a system has been developed for medical diagnosis devices in medical institutions, for performing operation guidance on the medical devices remotely via a network such as the Internet, or for maintenance and inspection of medical devices. An invention as disclosed in the following Patent Document 1 is known. In this patent document 1, when the operator of the medical device is instructed to operate from a place away from the medical device, the operation method is performed by performing an instruction based on a plurality of instruction modes selected by the operator. Can be conveyed more accurately and efficiently.
JP 2002-306451 A

  However, at the work site for maintenance and inspection, it is possible to keep non-related persons close to this medical diagnostic apparatus by placing a pylon around the medical diagnostic apparatus as described above, but the screen saver etc. can be released, If the operator performs an operation from a place away from the medical diagnostic apparatus, it is possible that the worker who performs the maintenance inspection is exposed to an unexpected risk. For example, if the CT apparatus is operated while checking the radiation exposure amount in a computed tomography (CT) apparatus, there is a possibility that an operator will be exposed.

  In addition, when updating software, there is a deficiency such as alteration or loss of data due to operations such as the operator moving the medical diagnostic device or shutting down the medical diagnostic device during data transmission / reception via the network. May occur. When such a situation occurs, correct data is not given to the medical diagnostic apparatus, which may cause a medical accident such as patient misplacement or loss of medical information. In this case, the medical diagnostic apparatus cannot be used safely even if maintenance work is performed.

  Further, when maintenance inspection such as correction or recovery of data in the medical information system is performed by remote operation, the maintenance inspection schedule is previously notified to the medical institution as described above. However, for example, it is conceivable that the operation described above is performed for some reason, for example, the person who received the notification of the maintenance inspection has not been informed of the other person.

  Furthermore, when an urgent patient or the like is transported, there may be a case where the medical diagnostic apparatus must be used even during maintenance and inspection work.

  If the above operations are performed by the operator without the knowledge of the operator, the state of the medical diagnostic apparatus that is a precondition for performing the maintenance and inspection work will change. In order to ensure safety, it is necessary to interrupt the current maintenance and inspection work and perform another work.

  The invention disclosed in Patent Document 1 focuses on eliminating operational troubles caused by the fact that the operation content to be instructed is not accurately transmitted from the instructor to the operator receiving the instruction. Therefore, the instructor and the operator communicate with each other remotely. For example, even if the instruction contents to be instructed are correct, the information is transmitted erroneously, and the medical diagnosis apparatus is operated based on the erroneous contents. In addition, there is no consideration for ensuring the safety of patients who receive diagnosis using the medical diagnostic apparatus.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to change the status of the medical diagnostic apparatus when the status of the medical diagnostic apparatus changes from the status before the maintenance and inspection work. It is to provide a safety ensuring support system capable of informing a person and a medical diagnostic apparatus incorporating the system.

The feature of the embodiment of the present invention is that in the safety assurance support system, the status of the medical diagnostic apparatus including the energization of the X-ray tube and the locked state of the bed is soft when performing maintenance and inspection related to software update of the medical diagnostic apparatus. notifying a device status detection means for detecting that change during wear updating a group to determine the correspondence of workers and the operator can take next, the status change of the medical diagnostic device that is detected by the device status detection means Device status display control means.

  According to the present invention, when the state of the medical diagnostic apparatus changes from the state before the maintenance inspection work during the maintenance inspection work, the safety ensuring support system capable of notifying the worker of the change in the situation and the system are incorporated. A medical diagnostic device can be provided.

  The medical diagnostic apparatus 1 is installed in a medical institution. For example, an X-ray diagnostic apparatus, a CT apparatus, an ultrasonic diagnostic apparatus, a magnetic resonance diagnostic apparatus (MR (magnetic resonance) apparatus), a gamma camera, or a PET (positron- emission tomography) and diagnostic workstations. Further, not only a stationary medical diagnostic apparatus in a medical institution but also a movable medical diagnostic apparatus is included. Hereinafter, an embodiment of the present invention will be described by taking as an example a case where a later-described safety assurance support system is incorporated in these medical diagnostic apparatuses 1.

  FIG. 1 is a block diagram showing an internal configuration of the medical diagnostic apparatus 1. In the medical diagnostic apparatus 1, a central processing unit (CPU) 1a, a read only memory (ROM) 1b, a random access memory (RAM) 1c, and an input / output interface 1d are connected via a bus 1e. The input / output interface 1d is connected with input means 1f, display means 1g, communication control means 1h, storage means 1i, removable disk 1j, and drive unit control means 1k, and drive unit control means 1k. Thus, each drive unit 11 of the medical diagnostic apparatus 1 is controlled.

  The CPU 1a reads out and executes a boot program for starting up the medical diagnostic apparatus 1 from the ROM 1b based on an input signal from the input unit 1f, and reads out various operating systems stored in the storage unit 1i. Further, the CPU 1a, for example, when remote maintenance is performed via the input unit 1f or the input / output interface 1d, based on an input signal from a maintenance terminal (not shown) or an input signal from another external device (not shown). Control various devices. Further, the CPU 1a reads a program and data stored in the RAM 1c, the storage unit 1i, and the like, loads them into the RAM 1c, and performs a series of processing such as calculation or processing of data based on a command of the program read from the RAM 1c. This is a processing device to be realized.

  The input means 1f is constituted by an input device such as a keyboard and a dial through which an operator of the medical diagnostic apparatus 1 inputs various operations. The input means 1f creates an input signal based on the operation of the operator and sends the CPU 1a via the bus 1e. Sent to. The medical diagnostic apparatus 1 may be provided with a dedicated operation panel as well as a keyboard and the like, and an operation screen can be operated via an input device on the operation panel. The display unit 1g is, for example, a liquid crystal display, and is a unit that receives, for example, an output signal from the CPU 1a via the bus 1e, and displays the status of the medical diagnostic apparatus 1 changed during maintenance and inspection, the processing result of the CPU 1a, and the like.

  The communication control unit 1h is a unit such as a LAN card or a modem, and is a unit that enables the medical diagnostic apparatus 1 to be connected to a communication network such as the Internet or a LAN. Data transmitted / received to / from the communication network via the communication control unit 1h is transmitted / received to / from the CPU 1a via the input / output interface 1d and the bus 1e as an input signal or an output signal.

  The storage means 1i is composed of a semiconductor or a magnetic disk, and stores programs and data executed by the CPU 1a.

  The removable disk 1j is an optical disk or a flexible disk, and signals read and written by the disk drive are transmitted to and received from the CPU 1a via the input / output interface 1d and the bus 1e.

  In the medical diagnostic apparatus 1 according to the embodiment of the present invention, the safety ensuring support program is stored in the storage unit 1i or the removable disk 1j, and is read and executed by the CPU 1a, whereby the safety ensuring support system 2 is It will be mounted on the medical diagnostic apparatus 1.

  FIG. 2 is a block diagram showing a configuration when the safety ensuring support system 2 is mounted on the medical diagnostic apparatus 1. The safety ensuring support system 2 includes a receiving unit 2a, a determining unit 2b, an apparatus status detecting unit 2c, an apparatus status display control unit 2d, and a transmitting unit 2e.

  The determination unit 2b is used by the medical diagnosis apparatus 1 to determine whether maintenance inspection work starts or ends and various other determinations. This determination can be made by inputting maintenance information related to maintenance inspections to the medical diagnostic apparatus 1 that is directly targeted by an on-site worker, or in the case of remote maintenance via a network, receiving maintenance information transmitted from the maintenance center. It is judged by doing. The medical diagnostic apparatus 1 enters a system for starting or ending maintenance inspection based on the maintenance information.

  The device status detection unit 2c detects the status of each selected unit of the medical diagnostic device 1. When the medical diagnostic apparatus 1 is used for examination or the like (normally supported), the safety ensuring support system 2 does not work, and the apparatus status detection means 2c does not function. On the other hand, it functions when it receives maintenance information for performing maintenance inspection from the judging means 2b. Therefore, upon receiving the maintenance information from the determination unit 2b, the device status detection unit 2c shifts the state of the medical diagnostic device 1 from “normal correspondence” to “maintenance check correspondence”, and each part of the medical diagnostic device 1 Check if the situation is correct.

  That is, the apparatus status detection means 2c detects the change when the status of each part of the medical diagnostic apparatus 1 confirmed in advance during the maintenance check changes during the maintenance check. For example, when the medical diagnostic apparatus subject to maintenance inspection is an X-ray CT apparatus, the status of “bed lock” (whether the bed has moved), whether “energization of the X-ray tube” is interrupted, Detect the status of each part listed as a detection target item. Note that the status of each unit detected by the device status detection unit 2c differs depending on the medical diagnostic device to be subjected to maintenance and inspection, and the detection target item can be arbitrarily set.

  The apparatus status display control means 2d performs control when notifying the operator or operator of the status of each part of the medical diagnostic apparatus 1 based on the status of each part of the medical diagnostic apparatus 1 detected by the apparatus status detecting means 2c. . That is, when the status of the medical diagnostic apparatus 1 changes, the change is notified. About this notification method, for example, any method may be used such as displaying a change point on the display means 1g or appealing to the sense of hearing such as prompting attention by voice.

  Next, the procedure from the start to the end of the maintenance inspection work of the medical diagnostic apparatus 1 will be described using the flowchart shown in FIG.

  First, the medical diagnostic apparatus 1 receives information (maintenance information) indicating the start of maintenance inspection work (ST1). The maintenance information may be transmitted by operating the input means 1f of the medical diagnosis apparatus that is the object of maintenance inspection directly on the site. When performing maintenance by remote operation, the maintenance information is transmitted from the maintenance center. It may be transmitted via a communication network. This maintenance information enters the judging means 2b in the safety ensuring support system 2, and the judging means 2b judges that maintenance and inspection work will be started from now on. Therefore, the determination unit 2b transmits the received maintenance information to the apparatus status detection unit 2c.

  The apparatus status detection means 2c that has received the maintenance information shifts the state of the medical diagnostic apparatus 1 from “normally supported” to “maintenance / inspection compatible” (ST2), and what each part of the medical diagnostic apparatus 1 does at that time It is ascertained whether the situation is present (ST3). This situation grasp is to grasp the situation of each part of the medical diagnostic apparatus 1 listed in the detection target items stored in the storage unit 1i in advance. Usually, maintenance and inspection of a medical diagnostic apparatus is performed at a position that should be referred to as a home position of the medical diagnostic apparatus by returning the medical diagnostic apparatus to a predetermined position from the state where each drive unit of the medical diagnostic apparatus is used. The apparatus status detection means 2c confirms whether or not each part of the medical diagnostic apparatus that is a maintenance inspection target is in such a position (ascertains its state).

  After that, the apparatus status display control means 2d stores that each part of the medical diagnostic apparatus 1 is in a state where maintenance inspection is possible and displays it through the display means 2g (ST4). The place for storing the status of the medical diagnostic apparatus 1 may be in the apparatus status display control means 2d or in the storage means 1i of the medical diagnostic apparatus 1. FIG. 4 is a screen example showing the operation status of the medical diagnostic apparatus 1 displayed on the display unit 1g. The screen example displayed on the display unit 1g is merely an example, and the layout, display items, and the like can be arbitrarily determined.

  In this screen example, a menu of maintenance work currently being performed is displayed at the top (displayed as “Updating Software” in the screen example shown in FIG. 4). Below that, the “apparatus status” of the medical diagnostic apparatus subject to maintenance and inspection at the start of maintenance and inspection work is displayed. This item shows an example displayed on the display means 1g of the X-ray CT apparatus when maintenance inspection is performed on the X-ray CT apparatus. Here, there are four items: “bed lock”, “X-ray tube energization interruption”, “database access refusal”, and “communication refusal”. Although the above four items are listed here, other items can also be listed.

  The “sleeper lock” indicates whether the sleeper is in the home position and is locked so as not to move during maintenance inspection. “Database access refusal” and “communication refusal” are items indicating whether or not access to the database connected to the communication network or communication is performed via the communication control unit 1h. In the screen examples shown in FIG. 4, “OK” is displayed in all cases. If “OK” is displayed for all items, it indicates that the medical diagnostic apparatus 1 is in a state where it can accept maintenance and inspection work. After confirming that the determination means 2b is in such a state, the maintenance inspection work is started (ST5). Thus, if it is clearly shown on the display means 1g or the like that the medical diagnostic apparatus 1 is undergoing maintenance and inspection, the possibility that the operator erroneously operates the medical diagnostic apparatus 1 during the maintenance and inspection work can be reduced. it can. This makes it possible to avoid an unexpected operation for the worker who suddenly moves the medical diagnostic apparatus 1, and thus helps to ensure safety for the worker who is working.

  While the medical diagnostic apparatus 1 is undergoing maintenance / inspection work, the apparatus state detection unit 2c monitors whether or not the apparatus state of each unit has changed since the start of the maintenance / inspection work. Any mechanism can be employed for the monitoring mechanism, but for example, a device configuration as shown in FIG. 5 can be used for “sleeper lock”.

  FIG. 5 is a view of the X-ray CT apparatus 10 as viewed from the side. The gantry 11 is cut and its cross section is shown, and the tunnel part 12 into which the patient enters for examination is visible at the center of the gantry 11. A top plate 14 is provided on the bed 13 and is movable in the direction of the arrow. The patient lies on the top board 14, and the top board 14 moves in the direction of the arrow, so that X-ray photographs of various parts of the patient's body are taken. If the state where the top plate 14 is located at the position as shown in FIG. 5 is the home position of the top plate 14, the switch 15 is provided at the tip of the bed 13 into which the top plate 14 is inserted into the tunnel portion 12. Is provided. When the top plate slides toward the tunnel portion 12, the switch 15 is turned on. Accordingly, when the top panel 14 is in the state as shown in FIG. 5 at the start of the maintenance inspection work, when the apparatus status detecting means 2c detects that the switch 15 is turned on, the top panel 14 is It can be determined that it has moved.

  FIG. 6 is a schematic diagram showing only a helium valve in a magnetic resonance diagnostic apparatus (MR (magnetic resonance) apparatus) using liquid helium. Some MR devices use a superconducting magnet to generate a static magnetic field. In such an MR device, liquid helium is used to cool the superconducting magnet. When maintenance and inspection of the MR apparatus is performed, the operation is started after the helium valve is closed and the helium is shut off. The helium valve 20 can flow helium into the MR apparatus or shut off by rotating the knob 21 in the direction indicated by the arrow. A magnet 22 is attached to the knob 21, and a detection circuit 23 is provided at a position coaxial with the axis of the knob 21 and facing the magnet 22. The detection circuit 23 is a circuit for detecting electromagnetic force. When the knob 21 is rotated, the magnet 22 is also rotated at the same time. When the magnet 22 is rotated, the magnetic field is changed and electromagnetic force is generated. The detection circuit 23 detects the generated electromagnetic force, and transmits to the apparatus status detection means 2c that the helium valve 20 is rotated and the knob 21 that has been closed at the start of the maintenance and inspection work is opened. In the case of this MR apparatus, the item displayed on the display means 1g is different from the item of the X-ray CT apparatus shown in FIG.

  Furthermore, in the medical diagnostic apparatus 1 that is the object of maintenance and inspection work, for example, the history of accessing the storage means 1i or a data server connected to the same communication network is monitored, and the apparatus status is detected. You may make it detect by the means 2c.

  As described above, when the status of the medical diagnostic apparatus 1 has changed since the start of the maintenance and inspection work (YES in ST6), the status of the medical diagnostic apparatus is confirmed and detected by the apparatus status detecting means 2c, and the apparatus status display is performed. It is stored by the control means 2d (ST7). Then, the information is displayed on the display means 1g (ST8).

  FIG. 7 is a screen example showing the operation status of the medical diagnostic apparatus 1 displayed on the display means 1g as in FIG. In the screen example of FIG. 7, it is detected by the apparatus status detection means 2c that the top plate 14 shown in FIG. 5 is moved and the switch 15 is turned on, and the information is displayed on the screen as “NG” by the apparatus status display control means 2d. Is displayed. Although not shown in this screen example, if the color of the item “NG” is displayed in, for example, red, or only the item whose status has changed is extracted and displayed, the worker can be surely connected. The operator can be notified. In addition, when an item whose status has changed at the start of the maintenance / inspection work is generated, it may be notified by voice, and there is no particular limitation as long as it is a method for alerting the operator.

  By displaying such a display on the display means 1g, the operator can know that the situation has changed since the subject medical diagnostic apparatus started the maintenance and inspection work. The impact on maintenance inspection work can be considered. For this reason, it is possible to make a decision such as stopping the maintenance check and starting the maintenance check again from the beginning, or continuing the maintenance check work as it is, and it is possible to further ensure the safety of the maintenance check.

  If there is no change in the status of the medical diagnostic apparatus 1 (NO in ST6), it is determined whether or not information indicating the end of the maintenance / inspection work has been received by the determination means 2b (ST9). If the end information has not been received (NO in ST9), the maintenance / inspection work for the medical diagnostic apparatus 1 is continued. Therefore, the process returns to step 6 and there is no change in the status of the medical diagnostic apparatus 1 again. It is determined whether or not.

  When the end information is received (YES in ST9), the maintenance inspection is completed (ST10), and the status of the medical diagnostic apparatus 1 is canceled and “maintenance inspection correspondence” is canceled and “normal correspondence” is shifted to (ST11). . If it will be in this state, the medical diagnostic apparatus 1 can be used for a test | inspection etc. as usual.

  In this way, by notifying that the maintenance / inspection work is in progress, it is possible to prevent an erroneous operation by the operator, and to incorporate the safety ensuring support system and the system capable of ensuring the safety of the operator during the maintenance / inspection work. A medical diagnostic device can be provided.

  In addition, when the status of the medical diagnostic device changes from the status before the maintenance and inspection work during the maintenance and inspection work, the operator has performed an operation that the operator has not been aware of by notifying the operator of the change in the situation. Therefore, the operator can decide whether to continue or stop the maintenance and inspection work after that, and the risk of performing maintenance and inspection without knowing that it has been operated. Safety assurance support system capable of avoiding various dangers to an operator and a patient caused by using a medical diagnostic apparatus that has undergone maintenance and inspection under risk, and a medical diagnostic apparatus incorporating the system Can be provided.

  In the above description, the apparatus status display control unit 2d stores the apparatus status of the medical diagnostic apparatus 1. However, the apparatus status detection unit 2c may store the apparatus status. The storage location of the device status in this case may be stored in itself or in the storage device 1i, similar to the device status display control unit 2d.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. For example, in the above-described embodiment, the case where the safety ensuring support system is mounted on the medical diagnostic apparatus has been described as an example. In addition, for example, a hospital information management system (HIS), radiation department information You may use in combination with the various management systems built in medical institutions, such as a management system (RIS: Radiological Information System) and a medical image management system (PACS: Picture Archiving Communication System). Moreover, you may use the safety ensuring assistance system mentioned above in the maintenance inspection of these various management systems. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

It is a block diagram which shows the internal structure of the medical diagnostic apparatus in embodiment of this invention. It is a block diagram which shows the internal structure of a safety ensuring assistance system. It is a flowchart which shows the flow of the process performed in the safety ensuring assistance system in embodiment of this invention. It is an example of a screen showing the example of a display shown by a display means. It is explanatory drawing which shows the mechanism which detects the condition of an apparatus in X-ray CT apparatus. It is explanatory drawing which shows the mechanism which detects the condition of an apparatus in MR apparatus. It is an example of a screen showing the example of a display shown by a display means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Medical diagnostic apparatus 2 Safety ensuring support system 2a Receiving means 2b Judgment means 2c Apparatus status detection means 2d Apparatus status display control means 2e Transmission means

Claims (5)

An apparatus status detecting means for detecting that the status of the medical diagnostic apparatus including the energization of the X-ray tube and the locked state of the bed in performing the maintenance check related to the software update of the medical diagnostic apparatus has changed during the software update ;
An apparatus status display control means for notifying the status change of the medical diagnostic apparatus detected by the apparatus status detection means, which is a basis for determining the next action that an operator or operator can take ;
A safety ensuring support system characterized by comprising:   2. The safety ensuring support system according to claim 1, wherein the apparatus status display control means causes the display means to display a status at the start of maintenance and inspection of the medical diagnostic apparatus during maintenance and inspection.   The apparatus status display control means notifies the status change of the medical diagnostic apparatus to the display means instead of displaying the status at the start of maintenance and inspection of the medical diagnostic apparatus. The safety assurance support system described.   The safety ensuring support system according to any one of claims 1 to 3, wherein the device status display control means notifies the status change of the medical diagnostic device by voice.   A medical diagnostic apparatus comprising the safety ensuring support system according to any one of claims 1 to 4.

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