JP4802957B2 - Mobile X-ray imaging device - Google Patents

Description

  The present invention relates to a mobile X-ray imaging apparatus that is used by moving it to a bedside in order to radiograph a patient who is difficult to walk due to a serious injury or the like.

  FIG. 4 is a diagram showing an outline of a conventional mobile X-ray imaging apparatus. As shown in FIG. 4, the mobile X-ray imaging apparatus 50 has a support column 22 slidably erected on the front portion of a traveling carriage having a pair of left and right front wheels 26 and a rear wheel 27. A telescopic arm 21 is attached to the support base 23 in a horizontal cantilevered manner, and an X-ray tube 24 is attached to the tip of the telescopic arm 21 so that the irradiation direction can be adjusted. The operation unit 25 is disposed.

  The speed control unit 46 that has received the operation signal from the operation unit 25 drives the motor 14 in response to the operation signal. The rear wheel 27 is driven by the motor 14.

  The power source of the mobile X-ray imaging apparatus 50 is supplied from the power charged in the battery 10 or the power cord 12 connected to the power outlet 13. The power cord 12 includes a power cable and a power plug 12a. The battery 10 is charged by the charge control unit 41 via the power cord 12 connected to the power outlet 13.

  The X-ray image of the mobile X-ray imaging apparatus 50 is detected by the X-ray detector 1 configured by, for example, a flat panel X-ray detector, and this detection signal is transmitted to the detection signal processing unit 2 where smoothing is performed. Then, image processing such as edge enhancement is performed to obtain image data. The signal transfer unit 33 functions as an interface for transferring the image data, and is connected to the network 38 via the information input / output cable 4, the information input / output terminal 5, the information input / output cable 6, and the information input / output terminal 7. Is done. Therefore, the image data can be transferred to the central image processing unit via the network 38. The information input / output cable 6 includes a communication cable and connection connectors 6a and 6b.

  When a patient is diagnosed with the mobile X-ray imaging apparatus 50 configured as described above, the mobile X-ray imaging apparatus 50 is moved to the bed B on which the subject M to be imaged lies and laid down. After the X-ray detector 1 is inserted and positioned between the subject M and the bed B, X-rays are emitted from the X-ray tube 24. The X-ray detector 1 detects an X-ray image transmitted through the subject M and transmits it to the detection signal processing unit 2. The detection signal processing unit 2 performs image processing on the X-ray image to form image data, which is displayed on the monitor 39 and stored. The image data is transferred to the central image processing unit via the network 38.

As described above, according to the mobile X-ray imaging apparatus 50 including the X-ray detector 1 constituted by, for example, a flat panel X-ray detector, image data can be obtained directly without using a film, A large number of X-ray images can be taken. (For example, see Patent Document 1)
Japanese Patent Laid-Open No. 11-188025

  The mobile X-ray imaging apparatus 50 can obtain image data directly without using a film at an arbitrary bedside, and can perform a number of X-ray imaging. It is an apparatus that efficiently diagnoses a patient with less burden on the operator, such as transfer to an image processing unit.

  However, after transferring the image data by connecting the information input / output cable 6 to the information input / output terminals 5 and 7, respectively, the operator moves the mobile X-ray imaging apparatus 50 without recognizing the state of the connection. If this is done, the information input / output cable 6 may be pulled strongly, causing damage to the information input / output terminals 5 and 7, or damage to the information input / output cable 6 or disconnection. For this reason, a connection presence / absence detecting means for detecting that the information input / output cable 6 is connected to the information input / output terminals 5 and 7 is provided, and the information input / output cable 6 is provided to the operator via an output signal of the connection presence / absence detecting means. It is desirable to recognize that is still connected.

  Similarly, after the power cord 12 is connected to the power outlet 13 and the battery 10 is charged or X-ray imaging or image data transfer is performed, the operator can move the mobile phone without recognizing the connected state. If the X-ray imaging apparatus 50 is moved, the power cord 12 may be pulled strongly, and the power plug 12a or the power outlet 13 may be damaged, or the power cord 12 may be disconnected or the apparatus may be damaged. For this reason, it is provided with connection presence / absence detection means for detecting that the power cord 12 is connected to the power outlet 13, and the power cord 12 remains connected to the operator via the output signal of the connection presence / absence detection means. Is desired to be recognized.

An X-ray tube that irradiates the subject with X-rays, an X-ray detector that detects a transmitted X-ray image of the subject, a means for acquiring X-ray image data from the X-ray detector, and the acquired image data In a mobile X-ray imaging apparatus equipped with a transfer means in a mobile carriage, connection presence / absence detection for detecting that an information input / output cable is connected to an information input / output terminal of a network as a transfer destination for transferring the image data And a control mechanism for limiting the movement speed of the mobile X-ray imaging apparatus without stopping by the output signal of the connection presence / absence detection means.

An X-ray tube for irradiating the subject with X-rays, an X-ray detector for detecting a transmitted X-ray image of the subject, a means for acquiring X-ray image data from the X-ray detector, and a power supply battery The mobile X-ray imaging apparatus provided in the apparatus further comprises a connection presence / absence detecting means for detecting that a power cord for charging the battery or supplying power to the mobile X-ray imaging apparatus is connected to a power outlet. And a control mechanism that limits the movement speed of the mobile X-ray imaging apparatus without stopping by the output signal of the connection presence / absence detection means.

  By limiting the movement speed of the device or stopping the movement, the operator can recognize that the information input / output cable or power cord is connected, so that the information input / output cable or power cord is not pulled strongly. In addition, it is possible to prevent damage to the information input / output terminal, damage to the information input / output cable, or disconnection, and further prevent damage to the power plug or power outlet, disconnection of the power cord, or damage to the device. Further, it is possible to prevent an accident such as an operator or a person around the apparatus stumbles due to slack in the information input / output cable or the power cord.

  The monitor displays the information input / output cable or power cord connection status in real time.

  The extent to which the moving speed of the apparatus is limited is such that the operator can clearly recognize that the speed is limited. Specifically, the moving speed when the information input / output cable or the power cord is connected is limited to, for example, about 1/10 of the speed when the information input / output cable or the power cord is not connected (human walking speed).

  Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing an outline of a mobile X-ray imaging apparatus of the present invention. As shown in FIG. 1, the mobile X-ray imaging apparatus 20 has a support column 22 slidably erected on the front part of a traveling carriage having a pair of left and right front wheels 26 and a rear wheel 27. A telescopic arm 21 is attached to the support base 23 in a horizontal cantilevered manner, and an X-ray tube 24 is attached to the tip of the telescopic arm 21 so that the irradiation direction can be adjusted. The operation unit 25 is disposed.

  FIG. 2 is a diagram showing a circuit configuration for detecting whether or not an information input / output cable is connected. In FIG. 2, resistors r1 and r2, a photocoupler 28, a DC power source supplied from the information input / output terminal 7, a device side DC power source connected to the resistor r2, and the like are connected to the information input / output cable 6 (see FIG. 1). ) To detect the presence / absence of connection. 1 and 2, two pins of the information input / output terminal 7 not used in network communication are connected to a DC power source (for example, 5V), and two pins of the connection connector 6b corresponding to the pin have a resistance r1. To the input of the photocoupler 28. The output (connection detection signal) of the photocoupler 28 is connected to a DC power source (for example, 5 V) on the apparatus side via a resistor r2. A circuit composed of the resistors r 1 and r 2 and the photocoupler 28 is disposed in the signal transfer unit 3. The information input / output cable 6 includes a communication cable and connection connectors 6 a and 6 b, and the connection connector 6 a is not normally disconnected from the information input / output terminal 5. Accordingly, the connection detection signal which is an output signal of the connection presence / absence detection means is that the transistor of the photocoupler 28 is turned ON when the information input / output cable 6 is connected, and the transistor is turned OFF when the information input / output cable 6 is not connected. Become a level.

  FIG. 3 is a diagram showing a circuit configuration for detecting whether or not the power cord is connected. In FIG. 3, the relay 29, the resistor r3, the DC power source connected to the resistor r3, and the like constitute connection presence / absence detection means for detecting whether or not the power cord 12 (see FIG. 1) is connected. In FIG. 1 and FIG. 3, the circuit composed of the relay 29 and the resistor r <b> 3 is disposed in the charging control unit 11. The power cord 12 includes a power cable and a power plug 12 a, and one end thereof is always connected to the charging control unit 11. Therefore, the power detection signal that is the output signal of the connection presence / absence detection means is such that when the power cord 12 is connected to the power outlet 13, the contact of the relay 29 is closed to the LOW level, and when not connected, the contact is opened to the HIGH level. It becomes.

  In FIG. 1, the connection detection signal is transmitted from the signal transfer unit 3 to the central processing unit 15, and the power detection signal is transmitted from the charge control unit 11 to the central processing unit 15. The central processing unit 15 transmits a command to limit the movement speed or stop the movement to the speed control unit 16 except when both the connection detection signal and the power detection signal are at the HIGH level.

  That is, when the information input / output cable 6 and the power cord 12 are not connected together, the speed control unit 16 does not receive a command to limit the movement speed or stop the movement, and the operation signal received from the operation unit 25. In response to this, the motor 14 is driven. The rear wheel 27 is driven by the motor 14, and the apparatus moves at a speed about the walking speed of a human. When at least one of the information input / output cable 6 or the power cord 12 is connected, the speed control unit 16 receives a command to limit the movement speed or stop the movement, and receives the operation signal received from the operation unit 25. Ignore and drive the motor 14 in accordance with the command. The rear wheel 27 is driven by the motor 14, and the apparatus moves or stops at a speed about 1/10 of the human walking speed, for example.

  The power source of the mobile X-ray imaging apparatus 20 is supplied from the power charged in the battery 10 or the power cord 12 connected to the power outlet 13. The battery 10 is charged by the charge control unit 11 via the power cord 12 connected to the power outlet 13.

  The X-ray image of the mobile X-ray imaging apparatus 20 is detected by the X-ray detector 1 configured by, for example, a flat panel X-ray detector, and this detection signal is transmitted to the detection signal processing unit 2 where smoothing is performed. Then, image processing such as edge enhancement is performed to obtain image data. The signal transfer unit 3 functions as an interface for transferring the image data, and is connected to the network 8 via the information input / output cable 4, the information input / output terminal 5, the information input / output cable 6, and the information input / output terminal 7. Is done. Therefore, the image data can be transferred to a central image processing unit (not shown) via the network 8.

  Since the present invention is configured as described above, when the patient is diagnosed by the mobile X-ray imaging apparatus 20, the connection between the information input / output cable 6 and the information input / output terminal 7 is removed, and then this mobile X-ray imaging is performed. The apparatus 20 is moved to the bed B on which the subject M to be imaged lies and laid down. The X-ray detector 1 is inserted and positioned between the subject M and the bed B, and then the X-ray tube 24 is used. X-rays are irradiated. The X-ray detector 1 detects an X-ray image transmitted through the subject M and transmits it to the detection signal processing unit 2. The detection signal processing unit 2 performs image processing on the X-ray image to form image data, which is displayed on the monitor 9 and stored. After the X-ray imaging is completed, the mobile X-ray imaging apparatus 20 is moved to the vicinity of the information input / output terminal 7, the information input / output cable 6 is connected, and the obtained image data is sent to the central image processing unit via the network 8. Forward to. Even if the operator forgets that the information input / output cable 6 is connected and starts moving the apparatus to the next X-ray imaging location after the transfer of the image data is completed, the movement speed is, for example, 1/10 of the normal speed. Alternatively, since it does not move, it can be recognized that the information input / output cable 6 is connected, and damage to the information input / output terminals 5 and 7, or damage or disconnection of the information input / output cable 6 can be prevented.

  Even after the power cord 12 is connected to the power outlet 13 and the battery 10 is fully charged, the operator forgets that the power cord 12 is connected and starts moving the apparatus to the next X-ray imaging location. Since the speed is, for example, 1/10 of the normal speed or does not move, it can be recognized that the power cord 12 is connected, and damage to the power outlet 13 or the charging control unit 11 or disconnection or breakage of the power cord 12 can be prevented.

  In the embodiment shown in FIG. 1, the X-ray detector 1 is composed of a flat panel X-ray detector, and this detection signal is transmitted to the detection signal processing unit 2, where image processing is performed to obtain image data. However, the present invention can be applied to a configuration in which the X-ray detector 1 includes an imaging plate (IP), and includes a computed radiography system (CR system) equipped with an IP reader, where image data is obtained. is there. Further, the present invention can be applied to a configuration in which the X-ray detector 1 is formed of a film, has no means for obtaining image data, and includes a power cord 12. The apparatus is not limited to the illustrated example.

  In the embodiment shown in FIG. 2, the connection detection signal is obtained by using the photocoupler 28, but this is an example and can be replaced by a relay. In the embodiment of FIG. 3, the power detection signal is obtained using the relay 29, but this is also an example, and it can be replaced by a combination of a rectifier circuit and a photocoupler. Thus, the apparatus can have various configurations, and the present invention includes these modifications.

  The present invention relates to a mobile X-ray imaging apparatus that is used by moving it to a bedside in order to radiograph a patient who is difficult to walk due to a serious injury or the like.

It is a figure which shows the outline | summary of the mobile X-ray imaging apparatus of this invention. It is a figure which shows the circuit structure which detects the presence or absence of the connection of an information input / output cable. It is a figure which shows the circuit structure which detects the presence or absence of the connection of a power cord. It is a figure which shows the outline | summary of the conventional mobile X-ray imaging apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 X-ray detector 2 Detection signal processing part 3 Signal transfer part 4 Information input / output cable 5 Information input / output terminal 6 Information input / output cable 6a Connection connector 6b Connection connector 7 Information input / output terminal 8 Network 9 Monitor 10 Battery 11 Charge control part 12 power cord 12a power plug 13 power outlet 14 motor 15 central processing unit 16 speed control unit 20 mobile X-ray imaging device 21 telescopic arm 22 support 23 support base 24 X-ray tube 25 operation unit 26 front wheel 27 rear wheel 28 photocoupler 29 Relay 33 Signal transfer unit 38 Network 39 Monitor 41 Charging control unit 46 Speed control unit 50 Mobile X-ray imaging apparatus B Bed M Subject

Claims (2)

An X-ray tube that irradiates the subject with X-rays, an X-ray detector that detects a transmitted X-ray image of the subject, a means for acquiring X-ray image data from the X-ray detector, and the acquired image data In a mobile X-ray imaging apparatus equipped with a transfer means in a mobile carriage, connection presence / absence detection for detecting that an information input / output cable is connected to an information input / output terminal of a network as a transfer destination for transferring the image data And a control mechanism that limits the movement speed of the mobile X-ray imaging apparatus without stopping by an output signal of the connection presence / absence detection means. An X-ray tube for irradiating the subject with X-rays, an X-ray detector for detecting a transmitted X-ray image of the subject, a means for acquiring X-ray image data from the X-ray detector, and a power supply battery The mobile X-ray imaging apparatus provided in the apparatus further comprises a connection presence / absence detecting means for detecting that a power cord for charging the battery or supplying power to the mobile X-ray imaging apparatus is connected to a power outlet. A mobile X-ray imaging apparatus comprising a control mechanism for limiting the movement speed of the mobile X-ray imaging apparatus without stopping by the output signal of the connection presence / absence detection means.

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