JP2016140550A - Mobile radiography apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile radiography apparatus which, when an operator accidentally touches a slow-speed movement operation part for executing moving operation of the same apparatus different from a movement operation part for executing moving operation of the mobile radiography apparatus, can reduce a movement that occurs.SOLUTION: The mobile radiography apparatus permits an instruction by a slow-speed movement operation part 205 during a period when at least one of an electromagnetic-lock release operation part 202 and an X-ray irradiation area operation part 203 is operated, the electromagnetic-lock release operation part for releasing an electromagnetic-lock provided on a movable portion of a support part that movably supports a position of an X-ray generation part, and the X-ray irradiation area operation part for controlling a travel of a movable limit vane provided in an X-ray beam-limiting part that restricts an X-ray irradiation area irradiated from the X-ray generation part and setting the X-ray irradiation area.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a mobile X-ray imaging apparatus, and more particularly, to a moving operation of a mobile X-ray imaging apparatus by a slow movement operating unit provided separately from a moving operation unit that performs a moving operation of the mobile X-ray imaging apparatus.

  The mobile X-ray imaging device can run in a hospital with an electric motor that uses a battery as an energy source, so it must move from a bed in a hospital room to the vicinity of the subject that is difficult to move. Can obtain a desired X-ray image.

  The movement control of the mobile X-ray imaging apparatus is performed based on the operation amount of the operation handle provided at the rear of the main body of the apparatus, and Patent Document 1 further includes a movement provided separately from the operation handle. It describes that the entire device can be moved without returning to the operation handle again when positioning the X-ray tube by providing a fine movement switch in the vicinity of the X-ray tube. The device automatically stops if another person accidentally operates the operation handle while operating the fine movement switch, and the device automatically stops when the fine movement switch continues to be tilted in a certain direction and a certain time has passed. It is also described that it is configured as described above.

JP 2002-45353 A

  In Patent Document 1, although the movement control when the operation handle is accidentally touched is considered, the movement control when the fine movement switch for controlling the movement of the apparatus is touched by mistake is also considered. It has not been.

  Accordingly, an object of the present invention is to prevent movement that occurs when a slow-speed moving operation unit that performs a moving operation of the apparatus provided separately from a moving operation unit that performs a moving operation of the mobile X-ray imaging apparatus is accidentally touched. It is an object of the present invention to provide a mobile X-ray imaging apparatus that can reduce generation.

  In order to solve the above problems, a mobile X-ray imaging apparatus according to the present invention is a mobile X-ray imaging apparatus that is movable using wheels driven by a motor, and is used for irradiating a subject. An X-ray generation unit for generating a line, an X-ray diaphragm unit for limiting an X-ray irradiation region irradiated from the X-ray generation unit, a support unit for movably supporting the position of the X-ray generation unit, An X-ray image processing unit that performs image processing on an X-ray signal output from an X-ray detector that detects X-rays emitted from the X-ray generation unit, a control unit that controls driving of the motor, and A moving operation unit that gives an instruction to the control unit and a moving operation unit that are provided separately from the moving operation unit and that have a moving speed lower than the upper limit of the moving speed of the mobile X-ray imaging apparatus operated by the moving operation unit A slow-speed moving operation unit for instructing the control unit to perform the control, and a movable unit of the support unit An electromagnetic lock release operation unit for releasing the provided electromagnetic lock; and an X-ray irradiation region operation unit for controlling an amount of movement of the movable restriction blade provided in the X-ray diaphragm unit and setting an X-ray irradiation region; The control unit permits an instruction by the slow movement operation unit during a period in which at least one of the electromagnetic lock release operation unit and the X-ray irradiation region operation unit is operated.

  According to the present invention, it is possible to prevent the occurrence of movement that occurs when the slow-speed moving operation unit that performs the moving operation of the apparatus provided separately from the moving operation unit that performs the moving operation of the mobile X-ray imaging apparatus is accidentally touched. A mobile X-ray imaging apparatus that can be reduced can be provided.

1 is a schematic configuration diagram of a mobile X-ray imaging apparatus of the present invention. 1 is a schematic configuration diagram around an X-ray diaphragm provided in a mobile X-ray imaging apparatus of the present invention. It is a figure for demonstrating the control part of this invention. FIG. 3 is a diagram for explaining an operation order of the mobile X-ray imaging apparatus according to the first embodiment. FIG. 6 is a diagram for explaining an operation sequence of the mobile X-ray imaging apparatus according to the second embodiment.

  Hereinafter, a mobile X-ray imaging apparatus according to the present invention will be described with reference to the accompanying drawings.

  Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments of the invention, and the repetitive description thereof is omitted. FIG. 1 is a diagram showing a schematic configuration of a mobile X-ray imaging apparatus of the present invention. FIG. 2 is a diagram showing a schematic configuration around the X-ray diaphragm section of the mobile X-ray imaging apparatus of the present invention.

  Supports the X-ray generation unit 101 that generates X-rays irradiated to the subject 100, the X-ray diaphragm unit 102 that limits the X-ray irradiation region irradiated from the X-ray generation unit 101, and the X-ray generation unit 101 A support unit 103 that moves in a horizontal direction with respect to the floor surface, a support unit 104 that supports the support unit 103 and moves in a vertical direction with respect to the floor surface, and high voltage generation that supplies power to the X-ray generation unit 101 105, an X-ray image processing unit 107 that performs image processing on the X-ray signal output from the X-ray detector 106 that detects the X-rays emitted from the X-ray generation unit 101, and an X-ray image processing unit A storage unit 108 that stores the X-ray image generated by 107, a display unit 109 that displays the X-ray image generated by the X-ray image processing unit 107 and / or the X-ray image recorded in the storage unit 108, A motor 110 that drives wheels 116 mounted on a carriage 117, which will be described later, a control unit 111 that controls each of the above components, and a control unit 111 The operation unit 112 that gives instructions such as X-ray irradiation, the battery 113 that supplies power to each of the above components, and the power supplied through the connector 114 by connecting the connector 114 to an external power supply source In order to charge the battery 113, a charging circuit 115 and a carriage 117 that moves on the floor using wheels 116 that are mounted with the above-described components and are driven by the motor 110 are provided.

  The X-ray generation unit 101 has an X-ray tube that receives power supply from the high voltage generation unit 105 and generates X-rays. The X-ray generation unit 101 may include an X-ray filter that selectively transmits X-rays having specific energy.

  The X-ray diaphragm unit 102 has a plurality of movable restriction blades that shield the X-rays generated from the X-ray generation unit 101, and each of the plurality of movable restriction blades (not specifically shown) moves each of the X-rays to the subject 100. Determine the irradiation area. Further, the X-ray diaphragm unit 102 is provided with an irradiation field lamp (not particularly shown) for allowing the operator to recognize the X-ray irradiation region restricted by the movable restricting blade. Visible light generated from the irradiation field lamp irradiates a position corresponding to the X-ray irradiation region limited by the movable limiting blade.

  The support unit 103 is configured to rotate about its own vertical direction as a rotation axis, and thus the X-ray generation unit 101 can be rotated about the vertical direction of the support unit 103 as a rotation axis. Similarly, the support unit 104 is configured to rotate about its own vertical direction as a rotation axis, and when moving a long distance such as between hospital rooms, the X-ray generation unit 101 is connected to the mobile X-ray apparatus 1. By traveling in the center direction, the direction of arrow A shown in FIG. 1, it is possible to prevent the X-ray generation unit 101 from coming into contact with a person or a wall. Both the support part 103 and the movable part of the support part 104 are provided with electromagnetic locks. When positioning the X-ray generation part 101, the X-ray generation part 101 is moved to a desired position by releasing the electromagnetic lock. Can be made.

  The X-ray image processing unit 107 performs image processing on the X-ray signal output from the X-ray detection unit 106 and outputs an image processed X-ray image. Image processing includes gamma conversion, gradation conversion processing, image enlargement / reduction, and the like.

  The storage unit 108 is configured using a hard disk, a memory, or the like.

  The display unit 109 displays the X-ray image generated by the X-ray image processing unit 107 and the X-ray image recorded in the storage unit 108, as well as the conditions for irradiating X-rays.

  Further, the X-ray image processing unit 108, the control unit 111, and the like are included in the main body 118, and behind the main body 118, a moving operation unit 119 for performing an operation of moving the mobile X-ray imaging apparatus 1 by an operator. Is provided. The movement operation unit 119 is composed of a rod-like lever that moves back and forth.The movement operation unit 119 converts the amount of movement when the lever moves back and forth into a signal, and outputs the converted signal to the control unit 111 to give an instruction. To do. The control unit 111 controls the rotation of the motor based on the signal output from the movement operation unit 119 to move the mobile X-ray imaging apparatus 1 forward or backward.

  In addition, the X-ray diaphragm unit 102 attached to the X-ray generation unit 101 includes a grip part 201 used when positioning the X-ray generation unit 101, and each movable part of the support unit 103 and / or the support unit 104. X-ray irradiation area for setting the X-ray irradiation area by controlling the movement amount of the movable restricting blade provided in the electromagnetic lock release operation part 202 and the X-ray diaphragm part 102 for releasing the provided electromagnetic lock An operation unit 203 and a slow movement operation unit 205 for performing a moving operation of the mobile X-ray imaging apparatus 1 at a slow speed are provided. The electromagnetic lock release operation unit 202 and the slow movement operation unit 205 will be described with an example of a switch, and the X-ray irradiation region operation unit 203 is configured with a rotary volume, but is not limited thereto.

  The electromagnetic lock release operation unit 202 is configured such that the electromagnetic lock provided in each movable part of the support unit 103 and / or the support unit 104 is released only while being pressed by the operator. When the electromagnetic lock is released, the position of the X-ray generation unit 101 supported by the support unit can be moved.

  The X-ray irradiation area operation unit 203 is configured to control the movement amount of the movable restricting blade based on the rotation amount rotated by the operator.

  The slow movement operation unit 205 is provided with a switch for moving the mobile X-ray imaging apparatus 1 forward or backward. The slow movement operation unit 205 controls the movement of the mobile X-ray apparatus 1 by instructing the control unit 111 to drive the motor 110 by pressing the switch only when a predetermined condition described later is satisfied. can do. The upper limit of the moving speed of the mobile X-ray apparatus 1 while the switch is pressed is the moving speed controlled by the moving operation unit 119 so that fine adjustment of the position of the mobile X-ray apparatus 1 can be easily performed. The value can be suppressed to a value sufficiently lower than the upper limit, and the movement of the mobile X-ray imaging apparatus 1 can be controlled at a slow speed. Alternatively, it may be configured to move only for a predetermined time by pressing the switch once.

  Next, Example 1 of the present invention will be described with reference to FIG.

  FIG. 3 is a diagram for explaining the control unit 111 which is a characteristic part of the present embodiment.

  The control unit 111 includes an operation state detection unit 301 that detects whether the slow movement operation unit 205, the electromagnetic lock release operation unit 202, and the X-ray irradiation region operation unit 203 are being operated, and an operation state detection unit 301. Based on the detected state of each operation unit, a slow movement operation permission unit 302 that permits the movement operation of the mobile X-ray imaging apparatus 1 by the slow movement operation unit 205, and a slow movement operation unit by the slow movement operation permission unit 302 When the movement operation of the mobile X-ray imaging apparatus 1 by 205 is permitted, the slow speed movement control unit 303 controls the movement of the mobile X-ray imaging apparatus 1 by controlling the motor 110 based on the operation of the slow speed movement operation unit 205. It has.

  Only when at least one of the electromagnetic unlocking operation unit 202 and the X-ray irradiation region operation unit 203 is operated, the slow movement operation permission unit 302 is a mobile X-ray imaging by the slow movement operation unit 205. The moving operation of the device 1 is permitted. The movement operation of the mobile X-ray imaging apparatus 1 by the slow movement operation unit 205 is mainly used for fine adjustment of the position of the mobile X-ray imaging apparatus 1 when the subject 100 is irradiated with X-rays.

  Similarly, the electromagnetic lock release operation unit 202 and the X-ray irradiation region operation unit 203 are also used when irradiating the subject 100 with X-rays. Since it is configured to allow the moving operation of the mobile X-ray imaging apparatus 1 by the slow moving operation unit 205 only during a period in which at least one of 203 is being operated, the slow moving operation unit is mistakenly in other periods. The movement of the mobile X-ray imaging apparatus 1 due to touching 205 can be prevented.

  Next, the operation order of the mobile X-ray imaging apparatus 1 of the present embodiment will be described with reference to FIG.

  In step S401, the operation state detection unit 301 detects whether the slow movement operation unit 205 is being operated by the operator. If it is detected that the slow movement operation unit 205 is being operated, the process proceeds to step S402.

  In step S402, the slow movement operation permission unit 302 uses the operation state detection unit 301 to determine whether at least one of the electromagnetic lock release operation unit 202 or the X-ray irradiation region operation unit 203 is being operated. If it is detected and detected, a signal permitting movement operation of the mobile X-ray imaging apparatus 1 by the slow movement operation unit 205 is output to the slow movement control unit 303, and the process proceeds to step S403. If not detected, step S401 is performed. Return to.

  In step S403, the motor 110 is controlled by the slow movement control unit 303 based on the operation of the slow movement operation unit 205, and the mobile X-ray imaging apparatus 1 is moved.

  As described above, in the mobile X-ray imaging apparatus 1 of the invention, the movement operation of the mobile X-ray imaging apparatus 1 by the slow movement operation unit 205 is performed by the X-ray irradiation area operation unit 203 or the electromagnetic lock release operation unit 202. Since it is configured to permit only during the period when at least one of them is operated, even if the slow moving operation unit 205 is accidentally touched while parked in a hospital corridor or the like, the mobile X The movement of the line imaging apparatus 1 can be prevented.

  Next, Example 2 of the present invention will be described. Further, differences from the first embodiment will be described.

  In the first embodiment, the slow movement operation permission unit 302 performs the slow movement operation only during a period in which at least one of the electromagnetic lock release operation unit 202 and the X-ray irradiation region operation unit 203 used during X-ray irradiation is operated. In the present embodiment, in addition to this, the electromagnetic lock release operation unit 202 or the X-ray irradiation area operation unit 203 is operated last. Measurement of the end elapsed time is started from the timing when the operation is completed, and if the end elapsed time is within the predetermined movement operation permission time, all operations of the electromagnetic unlocking operation unit 202 and the X-ray irradiation region operation unit 203 are completed. Even in such a case, the moving operation of the mobile X-ray imaging apparatus 1 by the slow moving operation unit 205 is permitted.

  In addition, when the same operation unit is operated again during measurement of the end elapsed time, or when another operation unit is operated, the end elapsed time up to that time is initialized, and the operation unit ends. The measurement of the elapsed elapsed time is started again at the timing.

  Further, the movement operation permission time can be arbitrarily set by the operator. Thus, for example, after setting the X-ray irradiation region by operating the X-ray irradiation region operation unit 203, the operation of the X-ray irradiation region operation unit 203 is once ended and the position of the mobile X-ray imaging apparatus 1 is adjusted. If you want to set the X-ray irradiation area again by operating the X-ray irradiation area operation unit 203 later, even if the end elapsed time is within the movement operation permission time even after the X-ray irradiation area operation unit 203 is operated. For example, since the moving operation of the mobile X-ray imaging apparatus 1 can be performed by the slow moving operation unit 205, the operability can be improved.

  Next, the operation order of the mobile X-ray imaging apparatus 1 of the present embodiment will be described with reference to FIG.

Since step S501 is the same as step S401 described in the first embodiment, a description thereof will be omitted.
In step S502, the slow movement operation permission unit 302 uses the operation state detection unit 301 to determine whether at least one of the electromagnetic lock release operation unit 202 or the X-ray irradiation region operation unit 203 is being operated. If it is detected and detected, a signal permitting movement operation of the mobile X-ray imaging apparatus 1 by the slow movement operation unit 205 is output to the slow movement control unit 303, and the process proceeds to step S504. If not detected, step S503 is performed. Proceed to

  In step S503, the slow movement operation permission unit 302 determines whether or not the end elapsed time is within the movement operation permission time. If the end elapsed time is within the movement operation permission time, the slow speed movement operation unit 205 is notified to the slow speed movement control unit 303. A signal for permitting the movement operation of the mobile X-ray imaging apparatus 1 is output, and the process proceeds to step S504. If it is outside the movement operation permission time, the process returns to step S501.

  Step S504 is the same as step S403 described in the first embodiment, and a description thereof will be omitted.

  As described above, in the mobile X-ray imaging apparatus 1 of the invention, the movement operation of the mobile X-ray imaging apparatus 1 by the slow movement operation unit 205 is performed by the X-ray irradiation area operation unit 203 or the electromagnetic lock release operation unit 202. The period during which at least one of them is operated, and the end elapsed time at which measurement is started from the timing at which the last operation is completed, among the X-ray diaphragm unit 102 and the support units 103 and 104, are determined in advance. Since it is configured to permit the moving operation of the mobile X-ray apparatus 1 by the slow movement operation unit 205 within the operation permission time, the operability of the mobile X-ray apparatus 1 can be improved. it can.

  1 Mobile X-ray system, 100 Subject, 101 X-ray generator, 102 X-ray diaphragm, 103, 104 Support, 105 High voltage generator, 106 X-ray detector, 107 X-ray image processor, 108 Storage unit, 109 Display unit, 110 Motor, 111 Control unit, 112 Operation unit, 113 Battery, 114 connector, 115 Charging circuit, 116 Wheel, 117 Dolly, 118 Main unit, 119 Moving operation unit, 201 Grip unit, 202 Electromagnetic lock Release operation unit, 203 X-ray irradiation area operation unit, 205 Slow movement operation unit, 301 Operation state detection unit, 302 Slow movement operation permission unit, 303 Slow movement control unit

Claims (4)

A movable X-ray imaging apparatus that is movable using wheels driven by a motor,
An X-ray generator for generating X-rays for irradiating the subject;
An X-ray diaphragm for limiting an X-ray irradiation region irradiated from the X-ray generation unit;
A support unit that movably supports the position of the X-ray generation unit;
An X-ray image processing unit that performs image processing on an X-ray signal output from an X-ray detector that detects X-rays emitted from the X-ray generation unit;
A control unit for controlling the driving of the motor;
A moving operation unit for instructing the control unit;
Provided separately from the movement operation unit,
A slow movement operation unit that instructs the control unit to perform control at a movement speed lower than the upper limit of the movement speed of the mobile X-ray imaging apparatus operated by the movement operation unit;
In order to set the X-ray irradiation region by controlling the movement amount of the electromagnetic lock release operation part for releasing the electromagnetic lock provided in the movable part of the support part and the movable restriction blade provided in the X-ray diaphragm part. An X-ray irradiation area operation unit;
Have
The controller is
A mobile X-ray imaging apparatus characterized by permitting an instruction by the slow movement operation unit during a period in which at least one of the electromagnetic lock release operation unit and the X-ray irradiation region operation unit is operated. . In addition to the period, the control unit may determine that the elapsed elapsed time at which the measurement was started from the timing at which the operation was last completed is within a predetermined movement operation permission time. For example, permitting the instruction by the slow movement operation unit,
The mobile X-ray imaging apparatus according to claim 1. When the same operation unit is operated again and / or when another operation unit is operated while measuring the end elapsed time, a timing at which the end elapsed time is initialized and the operation unit ends. Start measuring the elapsed elapsed time again,
The mobile X-ray imaging apparatus according to claim 2. The movement operation permission time can be arbitrarily set by an operator,
The mobile X-ray imaging apparatus according to claim 2, wherein:

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