JP6191350B2 - X-ray equipment - Google Patents

Description

  The present invention relates to an X-ray imaging apparatus, and more particularly to a round-trip X-ray imaging apparatus for performing imaging while visiting a hospital room.

  Such an X-ray imaging apparatus for round trips is capable of moving up and down with respect to a support provided on a movable carriage having wheels, and an X-ray tube and a collimator at the tip of an arm turning around the support. And is configured to move between hospital rooms electrically by driving a motor provided on the carriage (see Patent Document 1). The arm of such an X-ray imaging apparatus for round trips can be rotated in the forward and reverse directions within a range of, for example, 270 degrees with respect to the support (see Patent Document 2).

  In such a round-trip X-ray apparatus, when moving between hospital rooms, the arm descends with respect to the support and is fixed by a fixing mechanism at a fixed position where it comes into contact with a fixing portion called an arm catch. Yes. Then, when performing X-ray imaging, the operator releases the fixation of the arm by operating the fixation release button, the operator lifts the arm together with the X-ray tube and the collimator, and turns the X-ray tube or the like. It is arranged at a position suitable for X-ray imaging. When the X-ray imaging apparatus is moved to another hospital room or the like after completion of X-ray imaging, the arm is again fixed at the fixed position.

JP 2007-535 A US Pat. No. 5,784,435

  In order to fix the arm at the fixed position, the operator turns the arm while pressing the fixing release button, and lowers the arm while the turning angle position of the arm is the same as the fixed position. It is necessary to move the arm to the fixed position. However, since it is difficult for the operator to accurately recognize the turning angle position and the vertical position of the arm, it is difficult to place the arm at the fixed position, and it takes a long time to place the arm at the fixed position. There was a problem of requiring.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an X-ray imaging apparatus in which an arm can be easily arranged at a fixed position.

The invention according to claim 1 is a carriage, a support column disposed on the carriage, an arm that moves up and down relative to the support column and pivots about the support column, and an X-ray tube disposed on the arm. An X-ray imaging apparatus for round visits, comprising: a pin disposed on a lower surface of the arm; and a fixed position that is disposed on an upper portion of the carriage, the arm being a position where the arm should be fixed. Based on a signal from the fixed angle part formed with a hole for receiving the pin, a turning angle position detector for detecting the turning angle position of the arm, and the turning angle position detector. The turning angle position display means for displaying the turning angle position of the arm on the display unit, and the turning angle position of the arm is the same turning position as the fixed position where the arm should be fixed when the carriage is moved. When the angle is reached Characterized in that and a turning angle fixing mechanism for fixing in the pivot angle position the arm.

  According to a second aspect of the present invention, in the first aspect of the present invention, the height position detector that detects the height position of the arm, and a signal from the height position detector, based on the signal from the height position detector. The height position display means for displaying the height position on the display unit, and the height position of the arm is the same height position as the fixing position where the arm should be fixed when the carriage is moved. And a height fixing mechanism for fixing the arm at the height position.

  The invention according to claim 3 is the mark according to claim 1 or claim 2, wherein the turning angle position display means indicates the turning angle position of the arm together with the marked line displayed on the display unit. The height position display means displays a mark indicating the height position of the arm together with the marked line.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the turning angle fixing mechanism includes a permanent magnet and an electromagnet, and the turning of the arm by the magnetic force of the permanent magnet. And generating a magnetic force that applies a current to the coil of the electromagnet to cancel the magnetic force of the permanent magnet, thereby generating a braking force against the turning of the arm by the permanent magnet. A permanent electromagnet mechanism is provided.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the height fixing mechanism includes a permanent magnet and an electromagnet, and the arm is moved up and down by the magnetic force of the permanent magnet. And generating a magnetic force that cancels the magnetic force of the permanent magnet by applying a current to the coil of the electromagnet, thereby generating a braking force against the raising and lowering of the arm by the permanent magnet. A permanent electromagnet mechanism is provided.

According to the first aspect of the present invention, the arm turning angle position can be easily recognized based on the arm turning angle position display displayed on the display unit. Then, the turning angle fixing mechanism can fix the arm at the same turning angle position as the fixing position where the pin is accommodated in the hole of the fixing portion and the arm is fixed . For this reason, by lowering the arm at this position, the arm can be easily arranged at the fixed position.

  According to the second aspect of the invention, the arm height position can be easily recognized based on the arm height position display displayed on the display unit. The arm can be fixed at the same height position as the fixing position by the height fixing mechanism. For this reason, it becomes possible to arrange | position an arm in a fixed position easily.

  According to the invention of claim 3, the arm is easily fixed by matching the mark indicating the turning angle position of the arm with the marked line and matching the mark indicating the height position of the arm with the marked line. It is possible to move to a position.

  According to the invention described in claims 4 and 5, the arm can be easily fixed or released by the action of the permanent electromagnet mechanism.

1 is a side view of an X-ray imaging apparatus according to the present invention. 1 is a perspective view of an X-ray imaging apparatus according to the present invention. It is explanatory drawing which shows the mechanism which detects the position of the arm 13, or fixes the arm 13. FIG. 3 is a schematic diagram of a permanent electromagnet 62. FIG. 3 is a schematic diagram of a permanent electromagnet 63. FIG. It is a block diagram which shows the main control systems of the X-ray imaging apparatus which concerns on this invention. 3 is a schematic diagram showing marks 101 and 102 and a marked line 103 displayed on a display unit 61. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view of an X-ray imaging apparatus according to the present invention. FIG. 2 is a perspective view of the X-ray imaging apparatus according to the present invention.

  This X-ray imaging apparatus includes a support column 14 provided on a carriage 15, an arm 13 that moves up and down with respect to the support column 14 and is pivotable about the support column 14, and a tip of the arm 13. An X-ray tube 11 disposed, a collimator 12 disposed below the X-ray tube 11, and an X-ray detector for detecting X-rays irradiated from the X-ray tube 11 and passing through the subject 16 and a storage portion 17 for storing the X-ray detector 16. The X-ray imaging apparatus also includes a pair of left and right front wheels 21 that are direction changing wheels, a pair of left and right rear wheels 22 that are driving wheels, and an operation handle 19 for operating the traveling direction of the carriage 15. With.

  The arm 13 is movable between a fixed position, which is indicated by a solid line in FIG. 1, which is a position where the arm 13 is to be disposed when the carriage 15 is moved, and a photographing position that is raised and turned from the fixed position. Yes. In a state where the arm 13 is in the fixed position, the lower surface of the arm 13 abuts on a fixed portion 18 called an arm catch. In this state, the pin 23 disposed on the lower surface of the arm 13 is accommodated in a hole (not shown) formed in the fixing portion 18. Further, as shown in FIG. 2, the arm 13 turns around the support column 14 while being raised from the fixed position.

  A pair of dials 33 for opening and closing the collimator leaf and a button 34 for turning on a collimator lamp used for confirming the X-ray irradiation field are disposed on the front surface of the collimator 12. Further, the collimator 12 is provided with a handle 31 used when the X-ray tube 11 and the collimator 12 are moved. The handle 31 is provided with a pair of release buttons 32 for releasing the fixation of the arm 13 by a fixing mechanism that prohibits the raising and lowering and turning of the arm 13. Further, above the handle 31, a display unit 61 for displaying marks 101 and 102, which will be described later, and a marked line 103, which is composed of a liquid crystal display panel or the like, is disposed at a position in front of the X-ray tube 11. .

  FIG. 3 is an explanatory diagram showing a mechanism for detecting the position of the arm 13 or fixing the arm 13.

  The arm 13 is disposed so as to be movable up and down with respect to the column 14. The position indicated by the phantom line in FIG. 3 indicates a state where the arm 13 is disposed at a fixed position that is the position where the arm 13 is to be disposed when the arm 13 moves the carriage 15 as indicated by the solid line in FIG. At this time, the arm 13 is fixed at the height position by the action of the permanent electromagnet 62. Further, the arm 13 pivots together with the support column 14 about the axis of the support column 14. And the support | pillar 14 is fixed in the turning angle position by the effect | action of the permanent electromagnet 63 arrange | positioned in the position facing the flange part 64 in the support | pillar 14. FIG.

  A magnetic sensor 66 is disposed on the arm 13. The carriage 15 is provided with a magnetic sensor 67. These magnetic sensors 66 and 67 function as a height position detector for detecting the height position of the arm 13. The magnetic sensor 67 may be disposed not on the carriage 15 but on the fixed portion 18 or the like. A flange portion 64 is formed at the lower end portion of the support column 14. The support column 14 is connected to the encoder 65. The encoder 65 connected to the column 14 functions as a turning angle position detector for detecting the turning angle position of the arm 13.

  FIG. 4 is a schematic diagram of the permanent electromagnet 62 described above. FIG. 5 is a schematic diagram of the permanent electromagnet 63 described above.

  These permanent electromagnets 62 and 63 are each composed of a permanent magnet 71, an iron core 72, and a coil 73 disposed around the iron core 72. In a state where no current flows through the coil 73, the permanent electromagnets 62 and 63 function as magnets by the action of the permanent magnet 71. In this case, when the permanent electromagnet 62 is attracted to the arm 13 and the permanent electromagnet 63 is attracted to the flange portion 64, a braking force is generated, and the lifting and turning of the arm 13 is restricted. On the other hand, if the operator applies a current to the coil 73 constituting the electromagnet by operating the release button 32 described above, etc., and generates a magnetic force in the electromagnet that cancels the magnetic force of the permanent magnet 71, the permanent magnet The braking force due to the action of the magnet 71 is released, and the arm 13 can be raised and lowered and turned.

  FIG. 6 is a block diagram showing a main control system of the X-ray imaging apparatus according to the present invention.

  The X-ray imaging apparatus includes a control unit 80 including a ROM that stores an operation program necessary for controlling the apparatus, a RAM that temporarily stores data during control, a CPU that executes logical operations, and the like. . The control unit 80 controls the entire X-ray imaging apparatus including the X-ray tube 11 and the collimator 12 described above. The control unit 80 is connected to the display unit 61 described above, the release button 32 for releasing the fixation of the arm 13, the magnetic sensors 66 and 67, the encoder 65, and the permanent electromagnets 62 and 63. As a functional configuration, the control unit 80 includes a permanent electromagnet control unit 81 for fixing the arm 13 by controlling the permanent electromagnets 66 and 67, and an image processing unit 82. Then, the image processing unit 82 includes a marked line display unit 83 for displaying a marked line 103 (to be described later) on the display unit 61 and mark display units 84 and 85 for displaying marks 101 and 102 (to be described later) on the display unit 61. With.

  In the X-ray imaging apparatus for round trips having the above-described configuration, when the operator operates the operation handle 19 to move the carriage 15, the arm 13 has a lower surface of the arm 13 as shown by a solid line in FIG. It is disposed at a fixed position where it abuts on the fixed portion 18. At this time, due to the action of the permanent electromagnet controller 81 shown in FIG. 6, no current flows through the coil 73 in the permanent electromagnets 62 and 63. Therefore, these permanent electromagnets 62 and 63 function as magnets by the action of the permanent magnet 71, the permanent electromagnet 62 is attracted to the arm 13, and the permanent electromagnet 63 is attracted to the flange portion 64. For this reason, the movement of the arm 13 from the fixed position is restricted. Therefore, when the X-ray imaging apparatus is moved between hospital rooms, the arm 13 can be fixed and moved in a safe state.

  When the arm 13 is moved in order to execute X-ray imaging after the X-ray imaging apparatus is moved to the imaging location, the operator presses the release button 32 for releasing the fixation of the arm 13. As a result, the permanent electromagnet controller 81 applies a current to the coil 73 in the permanent electromagnets 62 and 63 to cause the electromagnet to generate a magnetic force that cancels the magnetic force of the permanent magnet 71. Thereby, the braking force due to the action of the permanent magnet 71 is released, and the attracting force of the permanent electromagnet 62 to the arm 13 and the attracting force of the permanent electromagnet 63 to the flange portion 64 are released. For this reason, the restriction | limiting of the movement from the fixed position of the arm 13 is cancelled | released. As a result, the arm 13 is raised and turned to move the X-ray tube 11 and the collimator 12 to a position suitable for X-ray imaging.

  When the X-ray imaging is completed and the X-ray imaging apparatus is moved to the next room, it is necessary to move the arm 13 to the fixed position indicated by the solid line in FIG. However, since it is difficult for the operator to accurately recognize the turning angle position and the vertical position of the arm 13, it is difficult to arrange the arm 13 at the fixed position, and until the arm 13 is arranged at the fixed position. There is a problem that it takes a long time. Therefore, in the X-ray imaging apparatus according to the present invention, the turning angle position and height position of the arm 13 are displayed on the display unit 61, and the turning angle position of the arm 13 is the same turning angle position as the fixed position. When the arm 13 is fixed at the turning angle position, and the arm 13 is fixed at the height position when the height position of the arm 13 is the same as the fixed position. Yes.

  FIG. 7 is a schematic diagram showing marks 101 and 102 and a marked line 103 displayed on the display unit 61.

  As shown in FIG. 7, the display unit 61 displays a marked line 103, a mark 101 indicating the turning angle position of the arm 13, and a mark 102 indicating the height position of the arm 13. The marked line 103 is displayed on the display unit 61 by the action of the marked line display unit 83 in the image processing unit 82 shown in FIG. The mark 101 indicating the turning angle position of the arm 13 is displayed on the display unit 61 by the action of the mark display unit 84 in the image processing unit 82. The display position of the mark 101 with respect to the marked line 103 is determined based on a signal from the encoder 65. Further, the mark 102 indicating the height position of the arm 13 is displayed on the display unit 61 by the action of the mark display unit 85 in the image processing unit 82. The display position of the mark 102 with respect to the marked line 103 is determined based on signals from the pair of magnetic sensors 66 and 67.

  When the arm 13 is arranged at a photographing position where the turning angle position and the height position are different from the fixed position, the mark 101 displayed on the display unit 61 is left and right from the marked line 103 as shown in FIG. The mark 102 is arranged at a position displaced in the vertical direction, and the mark 102 is arranged at a position displaced in the vertical direction. The displacement directions of these marks 101 and 102 coincide with the displacement direction from the fixed position of the arm 13, and the displacement amounts of these marks 101 and 102 coincide with the displacement amount from the fixed position of the arm 13. Yes. Therefore, the operator can easily understand how much and in what direction the arm 13 is displaced from the fixed position.

  For example, if the turning amount of the arm 13 is 270 degrees in both directions, for example, when the arm 13 is arranged at the end of the turning position (position turned 270 degrees), the mark 101 is marked The configuration is arranged at the end of 102.

  When moving the arm 13 toward the fixed position, the operator first holds the handle 31 and turns the arm 13 while confirming the position of the mark 101 on the display unit 61. Then, as shown in FIG. 7B, the mark 101 displayed on the display unit 61 and the position of the marked line 103 coincide with each other, and the turning angle position of the arm 13 becomes the same turning angle position as the fixed position. Sometimes the turning of the arm 13 is stopped. At the same time, the permanent electromagnet controller 81 stops the supply of current to the coil 73 in the permanent electromagnet 63. Thus, even when the release button 32 is pressed, the permanent electromagnet 63 is attracted to the flange portion 64, and the arm 13 is fixed at the turning angle position.

  Next, the operator grasps the handle 31 and lowers the arm 13 while confirming the position of the mark 102 on the display unit 61. Then, as shown in FIG. 7C, the mark 102 displayed on the display unit 61 coincides with the position of the marked line 103, and the height position of the arm 13 becomes the same height position as the fixed position. Sometimes the lowering of the arm 13 is stopped. At the same time, the permanent electromagnet controller 81 stops the supply of current to the coil 73 in the permanent electromagnet 62. Thereby, even if the release button 32 is pressed, the permanent electromagnet 62 is attracted to the arm 13 and the arm 13 is fixed at the height position.

  Thus, in the X-ray imaging apparatus according to the present invention, the turning angle position and height position of the arm 13 are displayed on the display unit 61, and the turning angle position of the arm 13 is the same as the fixed turning position. The arm 13 is fixed at the turning angle position when it becomes, and the arm 13 is fixed at the height position when the height position of the arm 13 becomes the same height position as the fixing position. Therefore, the turning angle position and height position of the arm 13 can be easily recognized based on the display on the display unit 61. Then, after the arm 13 is fixed at the same turning angle position as the fixed position by the permanent electromagnet 63, the arm 13 is lowered at this position, and the arm 13 can be fixed at the fixed position by the permanent electromagnet 62. For this reason, it becomes possible to arrange | position the arm 13 in a fixed position easily.

  In the above-described embodiment, the display unit 61 for displaying the marks 101 and 102 and the marked line 103 is disposed in the vicinity of the handle 31 used for turning and raising and lowering the arm 13. For this reason, it is possible to easily recognize the positional relationship between the marks 101 and 102 and the marked line 103 during the turning and raising / lowering operations of the arm 13. However, this display unit may be arranged at other places such as the upper part of the carriage 15.

  In each of the above-described embodiments, the arm 13 is fixed by a pair of permanent electromagnets 62 and 63. However, instead of the permanent electromagnets 62 and 63, a mechanical fixing means capable of switching the fixing state by a solenoid or the like may be used.

  Furthermore, in the above-described embodiment, the height position of the arm 13 is detected by the pair of magnetic sensors 66 and 67 and the turning angle position of the arm 13 is detected by the encoder 65, but the arm 13 is detected by other detection mechanisms. The height position and the turning angle position may be detected.

11 X-ray tube 12 Collimator 13 Arm 14 Post 15 Car 16 X-ray detector 18 Fixed part 21 Front wheel 22 Rear wheel 31 Handle 32 Release button 36 Sensor 61 Display part 62 Permanent electromagnet 63 Permanent electromagnet 64 Flange part 65 Encoder 66 Magnetic sensor 67 Magnetic sensor 71 Permanent magnet 72 Iron core 73 Coil 80 Control unit 81 Permanent magnet control unit 82 Image processing unit 83 Mark line display unit 84 Mark display unit 85 Mark display unit 101 Mark 102 Mark 103 Mark line

Claims (5)

A roundabout X comprising: a carriage; a support post disposed on the carriage; an arm that moves up and down relative to the support post and pivots about the support post; and an X-ray tube provided on the arm. A radiography apparatus,
A pin disposed on the lower surface of the arm;
A fixing portion disposed in an upper portion of the carriage, and formed with a hole portion in which the pin is housed when the arm is arranged at a fixing position where the arm is to be fixed;
A turning angle position detector for detecting a turning angle position of the arm;
Based on a signal from the turning angle position detector, turning angle position display means for displaying the turning angle position of the arm on a display unit;
When the turning angle position of the arm is the same turning angle position as the fixing position where the arm should be fixed when the carriage is moved, the turning angle is fixed so that the arm is fixed at the turning angle position. Mechanism,
An X-ray imaging apparatus comprising: The X-ray imaging apparatus according to claim 1,
A height position detector for detecting the height position of the arm;
Based on a signal from the height position detector, a height position display means for displaying the height position of the arm on the display unit;
When the height position of the arm becomes the same height position as the fixing position where the arm should be fixed when the carriage is moved, the height is fixed so that the arm is fixed at the height position. Mechanism,
An X-ray imaging apparatus further comprising: The X-ray imaging apparatus according to claim 1 or 2,
The turning angle position display means displays a mark indicating the turning angle position of the arm together with the marked line displayed on the display unit, and the height position displaying means displays the height of the arm together with the marked line. An X-ray imaging apparatus that displays a mark representing a position. The X-ray imaging apparatus according to any one of claims 1 to 3,
The turning angle fixing mechanism includes a permanent magnet and an electromagnet, generates a braking force against the turning of the arm by the magnetic force of the permanent magnet, and applies a current to the coil of the electromagnet to apply a magnetic force of the permanent magnet. An X-ray imaging apparatus including a permanent electromagnet mechanism that releases a braking force against the turning of the arm by the permanent magnet by causing the electromagnet to generate a magnetic force for canceling. The X-ray imaging apparatus according to any one of claims 1 to 4,
The height fixing mechanism includes a permanent magnet and an electromagnet, generates a braking force for raising and lowering the arm by the magnetic force of the permanent magnet, and applies a current to the coil of the electromagnet to apply a magnetic force of the permanent magnet. An X-ray imaging apparatus comprising a permanent electromagnet mechanism that releases a braking force against the lifting and lowering of the arm by the permanent magnet by causing the electromagnet to generate a magnetic force for canceling.

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