JP2016087278A - Radiation generation apparatus and radiation imaging system - Google Patents

Abstract

An object of the present invention is to provide a radiation generation device and a radiation imaging system that allow an operator to easily connect (attach and detach) a support section that supports a radiation generation section and a moving section that has wheels. SOLUTION: A movable part 8 that supports a first support 11 and is movable; a radiation generation unit 1 that generates radiation; a second support 12 that supports an arm 2 that supports the radiation generation unit 1; A connecting part 10 that is installed on one side of the first pillar 11 and connects the first pillar 11 and the second pillar 12, and a sliding part 13 that slides the connecting part 10 in the longitudinal direction of the first pillar 11. Equipped with. [Selection diagram] Figure 1

Description

  The present invention relates to a radiation generation apparatus having a radiation generation unit that generates radiation to a subject and a radiation imaging system.

  In recent years, there are portable radiation generating apparatuses and radiographic systems. When imaging is performed using a portable radiation generating device, a radiation generating unit is installed according to the imaging region of the subject. And the radiation irradiated from the radiation generation part is detected with a radiation detector. When carrying the apparatus for generating radiation, the portability is improved by separating the apparatus into two parts, a support part for supporting the radiation generation part and a moving part having wheels. (For example, Patent Document 1)

JP 2014-195588 A

  However, in the radiation generating apparatus of Patent Document 1, the support columns are divided on the support part side and the moving part side. For this reason, the operator lifts and connects the support unit integrated from the relatively heavy radiation generating unit to the support column to the upper end of the support column on the moving unit side having a height of about 1 m at the stage of imaging preparation. Work to do.

  The present invention has been made in view of the above problems, and radiation generation that allows an operator to easily perform connection work (detachment work) between a support section that supports a radiation generation section and a moving section having wheels. An object of the present invention is to provide a medical device and a radiation imaging system.

  In order to achieve the object of the present invention, a radiation generating apparatus and a radiation imaging system according to the present invention include a movable unit that supports a first support column and is movable, a radiation generating unit that generates radiation, and the radiation generating unit. An arm that supports the portion, a second support column that supports the arm, a connecting portion that is installed on one side of the first support column and connects the first support column and the second support column, And a sliding portion that slides the connecting portion in the longitudinal direction of the first support column.

  According to the radiation generating apparatus and the radiation imaging system of the present invention, the operator can easily perform a connection operation (detachment operation) between the support unit that supports the radiation generation unit and the moving unit including the wheels.

1 is a diagram illustrating a configuration of a radiation generation apparatus according to Embodiment 1. FIG. 1 is a diagram illustrating a configuration of a radiation generation apparatus according to Embodiment 1. FIG. 1 is a diagram illustrating a configuration of a radiation generation apparatus according to Embodiment 1. FIG. FIG. 3 is a diagram illustrating a slide mechanism of a slide unit of the radiation generating apparatus according to the first embodiment. FIG. 3 is a diagram illustrating a slide mechanism of a slide unit of the radiation generating apparatus according to the first embodiment. The figure which shows the connection form of the connection part of the apparatus for radiation generation of Example 1. FIG. The figure which shows the connection form of the connection part of the apparatus for radiation generation of Example 1. FIG. The figure which shows the connection form of the connection part of the apparatus for radiation generation of Example 1. FIG. The figure which shows the operation | movement form of the apparatus for radiation generation of Example 1. FIG. FIG. 3 is a diagram illustrating a photographing form of the radiation generating apparatus according to the first embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generating apparatus according to a second embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generating apparatus according to a second embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generating apparatus according to a second embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generating apparatus according to a third embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generating apparatus according to a third embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generating apparatus according to a third embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generation apparatus according to a fourth embodiment. FIG. 6 is a diagram illustrating a configuration of a radiation generation apparatus according to a fourth embodiment.

  Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a diagram illustrating a configuration of a radiation generation apparatus according to Embodiment 1 of the present invention. FIG. 1 shows a side view of the radiation generating apparatus.

  The apparatus for generating radiation mainly includes a moving unit 8 in which a plurality of wheels are installed, a first support column 11 standing in a vertical direction with respect to the moving unit 8, and a connecting unit 10 (a connecting unit). The second support column 12 is connected (coupled) to the first support column 11 and the arm 2 is installed so as to be rotatable with respect to the second support column 12. The second support column 12 supports the arm 2. The arm 2 and the second support column 12 can also be referred to as a support portion (support structure). The radiation generating apparatus includes a radiation generating unit 1 that is installed to be rotatable with respect to the arm 2 and generates radiation, and a leg portion 6 that can be folded with respect to the moving unit 8. When the second support column 12 is connected to the connection unit 10, both the first support column 11 and the second support column 12 are erected in the vertical direction.

  The radiation generating unit 1 that generates radiation generates radiation, and includes a radiation tube that irradiates radiation, a diaphragm for limiting a radiation irradiation region, and the like. The radiation generator 1 is, for example, a transmissive radiation generator. The transmission-type radiation generator does not need to cover the entire periphery of the envelope that houses the radiation generator tube or the radiation generator tube with a shielding member such as lead, so it is smaller than the rotary anode radiation generator. Weight reduction can be realized.

  The arm 2 supports the radiation generator 1. The arm 2 has one end connected to the radiation generating unit 1 and the other end connected to the second support column 12. The arm 2 supports the radiation generating unit 1 and has a predetermined length. The arm 2 may have an expansion / contraction mechanism that expands and contracts in the longitudinal direction of the arm 2 or a rotation mechanism that rotates the arm 2. When the arm 2 is extended to a predetermined length or the arm 2 is rotated, the radiation generator 1 can be pushed out toward the subject.

  The rotating unit 3 is installed between the radiation generating unit 1 and the arm 2 and can rotate the radiation generating unit 1. By rotating the radiation generator 1, radiation can be irradiated in a desired direction.

  The first support column 11 is perpendicular to the horizontal plane (floor surface, ground surface) or at an angle close to vertical when the radiation generating device is standing. The first support column 11 is installed in the moving unit 8. The first support column 11 is erected on the moving unit 8 so as to stand in the vertical direction. The first support column 11 has a predetermined length, and may have an expansion / contraction mechanism that expands and contracts in the longitudinal direction of the first support column 11.

  The arm hinge unit 5 connects the arm 2 and the second support column 12 so that the arm 2 can be opened and closed with respect to the second support column 12. The arm hinge unit 5 has a mechanism that connects the arm 2 and the second support column 12 and can open and close the arm 2 with respect to the second support column 12. The arm 2 can rotate around the upper end of the second support column 12. When the arm 2 is folded, the arm 2 is substantially parallel to the second support column 12. The arm 2 has a rotation range of a predetermined range (about 180 °) with respect to a predetermined rotation direction. The arm 2 bends on the side opposite to the side where the handle 9 described later is installed.

  The leg 6 is a member that supports the radiation generating apparatus. In the form shown in FIG. 1, the components that come into contact with the horizontal plane (floor surface, ground) in the radiation generating apparatus are the moving unit 8 and the leg unit 6. That is, the moving unit 8 and the leg unit 6 support the radiation generating apparatus. The leg part 6 can expand the area which contacts a horizontal surface in the apparatus for radiation generation. Therefore, for example, even when the radiation generating unit 1 is positioned with respect to the subject, the weight balance of the radiation generating device can be maintained by the legs 6.

  Specifically, the leg portion 6 is a plate-like member, and has a support portion that is supported in contact with a horizontal plane (floor surface, ground surface). The support portion is installed on the bottom surface of the leg portion 6. The support unit may be a moving mechanism that moves on a horizontal plane (floor surface, ground surface) such as a plurality of tires or casters. The leg portion 6 can be folded with respect to the moving portion 8 in a predetermined rotation direction. The leg 6 has a rotation range of about 90 ° with respect to a predetermined rotation direction. The rotation axis of the leg portion 6 is parallel to the rotation axis of the arm hinge portion 5.

  The leg part 6 is connected to the moving part 8 via the support leg hinge part 7. The leg portion 6 can be folded by the support leg hinge portion 7. At the time of imaging, as shown in FIG. 1, the operator opens the leg portion 6, and the radiation generating device is supported by the leg portion 6 and the moving portion 8. At this time, the support leg hinge part 7 may fix the leg part 6 to the moving part 8 by controlling the rotation of the hinge.

  The handle 9 is for the operator to hold when moving the radiation generating apparatus. As shown in FIG. 1, a handle 9 is installed near the upper end of the column 4. The operator can move the radiation generating apparatus by holding the handle 9 and pushing the handle 9 in the moving direction of the moving unit 8.

  When carrying the radiation generating apparatus, the operator first folds the arm 2, stores the arm 2 together with the radiation generating unit 1, and closes the leg 6. In a state in which the leg 6 and the arm 2 are folded, the radiation generating device 1 can have a low center of gravity by placing the heavy object of the radiation generating unit 1 near the horizontal plane (floor surface, ground). Thereby, the weight balance of the apparatus for radiation generation can be maintained.

The moving unit 8 has a plurality of wheels. The wheels are a plurality of tires or casters, and are always placed on a horizontal surface (floor surface, ground surface). By rotating the wheel, the radiation generating device can be moved in the front-rear direction together with the moving unit 8. The moving part 8 can be replaced with a base part. The base part does not have a mechanism for moving the radiation generating apparatus.
The radiation detector detects the radiation that has passed through the subject and outputs image data corresponding to the radiation.

  In the 1st support | pillar 11, a storage part may be attached upwards rather than a control part. This is because the access to the radiation detector (storage unit) used for each imaging is more frequent than the operator's access to the control unit in the workflow during imaging. In the radiation generating apparatus according to the present embodiment, the control unit is installed in the vicinity of the horizontal plane (floor surface, ground), and the storage unit is placed at a position of, for example, 500 mm or more from the horizontal plane (floor surface, ground) that the operator can access without bending Install. Therefore, it becomes easy to take out the radiation detector from the storage portion, and the operability can be improved.

  The control unit may include a power supply unit or a battery that supplies power to the radiation generation unit 1. The control unit includes at least one of a control board for controlling the radiation of the radiation generator 1, a power source, and a transformer for supplying power from the power source to the control board and the radiation generator 1. . The radiation generating unit 1 and the control unit are electrically connected by wire or wirelessly.

  The first support column 11 is provided with a slide unit 13 that slides the connection unit 10 in the longitudinal direction of the first support column 11. The slide portion 13 is connected to a connection portion 10 that connects the first support column 11 and the second support column 12. By sliding the slide portion 13 in the longitudinal direction of the first support column 11, the connection unit 10 can also be slid in the longitudinal direction of the first support column 11. Specifically, the slide unit 13 slides the connection unit 10 from the height of the moving unit 8 (leg unit 6) to the vicinity of the upper end of the first support column 11 (the height of the handle 9). The connecting portion 10 can slide from the height of the moving portion 8 (leg portion 6) to the vicinity of the upper end of the first support column 11 (the height of the handle 9). Therefore, the second support column 12 (support unit (support structure)) can be slid in the longitudinal direction of the first support column 11 by sliding the slide unit 13 in the longitudinal direction of the first support column 11.

  The connection unit 10 is installed on one side surface of the first support column 11 via the slide unit 13. Specifically, the connection part 10 is installed on the leg part 6 side (leg part side) with respect to the first support column 11. The connecting portion 10 is installed on the opposite side of the handle 9 in the first support column 11. The connection unit 10 is installed on the traveling direction side (radiation imaging side: left side of the drawing) of the moving unit 8 with respect to the first support column 11. The advancing direction side is the side on which the operator pushes the handle 9 (to the left side of the drawing) to advance the radiation generating apparatus. The radiation imaging side is a side on which a subject is installed and performs radiography. Therefore, the 2nd support | pillar 12 can be installed in the left side (the leg 6 side, the other side of the handle 9) of drawing.

  2 and 3 are views showing a form in which the second support column 12 is detached from the connecting portion 10. FIG. 2 shows a side view of the radiation generating apparatus. FIG. 3 shows a perspective view of the radiation generating apparatus.

  The second support column 12 can be connected to the connection unit 10 again from the form in which the second support column 12 is removed from the connection unit 10. That is, the second support column 12 can be attached to and detached from the connection unit 10.

  Since the connection part 10 is connected with the slide part 13, the connection part 10 can be slid to an up-down direction. Therefore, as shown in FIGS. 2 and 3, the connecting portion 10 can be slid to the lower side of the first support column 11. The slide part 13 can be moved to the position of the moving part 8 or the leg part 6 by sliding the connecting part 10 downward. That is, the slide part 13 can move the connecting part 10 to the vicinity of the floor surface.

  Therefore, since the connection part 10 is installed near the floor surface, the operator can easily perform the connection work (detachment work) between the second support column 12 and the connection part 10. That is, the operator can easily perform a connection operation between the support unit (support structure) that supports the radiation generation unit 1 and the moving unit 8 having wheels.

  4 and 5 are diagrams showing an outline of the slide mechanism of the slide portion 13. 4 and 5 are cross-sectional views of the first column 11.

  As shown in FIG. 4A, an auxiliary rail 14 for assisting the sliding of the slide portion 13 is provided on one side surface of the first support column 11. The auxiliary rail 14 is installed along the longitudinal direction of the first support column 11. Therefore, the slide part 13 can be slid along the longitudinal direction of the first support column 11.

  In addition, an auxiliary operation mechanism 20 using a stationary spring is installed inside the first support column 11 in order to assist an operating force when the slide unit 13 slides. A wire 21 extends from the auxiliary operation mechanism 20 in the longitudinal direction of the first support column 11. The wire 21 is bent near the upper end of the first support column 11 via a pulley 22. The wire 21 bent by the pulley 22 is connected to the slide portion 13. As shown in FIG. 4B, the auxiliary operation mechanism 20 using a stationary spring is configured to assist the operating force that lifts the slide portion 13 upward by winding the wire 21.

  Further, as shown in FIG. 5A, the auxiliary operation mechanism may be a spring structure such as a gas spring 25. Further, as shown in FIG. 5B, a counter balance structure using a weight 26 may be used. The weight 26 has a weight that is balanced even when the (supporting portion) of the second support column 12 is connected to the connecting portion 10.

  As shown in FIG. 5A, when the stroke of the gas spring 25 is insufficient with respect to the moving stroke of the slide portion 13, the pulley 22 may be a stepped double speed mechanism. For example, even if the stroke of the gas spring 25 is ½ of the movement stroke of the slide portion 1310, the movement stroke of the slide portion 13 is reduced by setting the shaft diameter ratio of the stepped structure of the pulley 22 to 1: 2. It can be secured.

  6-8 is a figure which shows the connection form of the connection part 10. As shown in FIG. FIG. 6 shows a top view of the connecting portion 10. 7 and 8 are side views of the connecting portion 10.

  The connecting portion 10 has a shape that matches the outer shape of the second support column 12. The connecting portion 10 has a shape that covers the outer shape of the second support column 12. The connecting portion 10 has a shape that is open in one direction. As shown in FIG. 6, since the outer shape of the second support column 12 is rectangular, the connection portion 10 is rectangular and has a shape that is open in one direction. The shape of the connecting portion 10 is a U-shape. If the outer shape of the second support column 12 is a round shape, the outer shape of the connection portion 10 is U-shaped. Thus, by making the outer shape of the connecting portion 10 suitable for the outer shape of the second support column 12, the horizontal play between the second support column 12 and the arm 2 can be suppressed during connection. Moreover, the connection part 10 makes it the shape which opened one direction, and can connect the 2nd support | pillar 12 easily from the open direction.

  As shown in FIG. 7A, the protrusion 30 is installed at the end (lower end) of the second support column 12. The protrusion 30 protrudes in the longitudinal direction (connection direction) from the lower end of the second support column 12. The protrusion 30 is formed along one side surface of the second support column 12.

  A hole 32 that fits into the protrusion 30 is provided in the connection portion 10. Specifically, a hole 32 is installed at a position corresponding to the protrusion 30 of the second support column 12 on the bottom surface inside the connection unit 10, and the connection unit 10 covers the outside of the second support column 12. It has become. The hole 32 has a dimension that allows the protrusion 30 of the second support column 12 to be inserted. In other words, the protrusion 30 is inserted into the hole 32 when the connection portion 10 and the second support column 12 are connected.

  Due to the weight of the radiation generating unit 1, a moment that falls to the imaging side where the radiation generating unit 1 exists is generated in the second support column 12. Therefore, by constructing a structure in which the protruding portion 30 is fitted in the hole portion 32 at the lower portion of the connecting portion 10, it is possible to suppress the collapse of the second support column 12 due to the moment.

  Furthermore, as shown in FIG. 7, after connecting the 2nd support | pillar 12 to the connection part 10, the lock mechanism which locks the 2nd support | pillar 12 and the connection part 10 is provided. Specifically, the lock mechanism includes a fixing bracket 31 provided on the back surface of the second support column 12 and a fixing bracket 33 provided on the upper back surface of the connection portion 10. After the second support column 12 is connected to the connection unit 10, the fixing bracket 31 of the second support column 12 and the fixing bracket 33 of the connection unit 10 are combined. By this coupling, the fall of the second support column 12 due to the moment can be suppressed even at the upper portion of the connection portion 10.

  Further, as shown in FIG. 8, the lock mechanism includes a fixing bracket 34 provided on the side surface of the second support column 12 and a fixing bracket 35 provided on the upper side surface of the connection portion 10. Since the fixing bracket 34 and the fixing bracket 35 are also installed on the side surface of the second support column 12 and the side surface of the connection portion 10, respectively, the second support column 12 is connected to the connection portion 10 and then combined. With this coupling structure, it is possible to suppress vertical omission and backlash of the second support column 12.

  Note that the fixing brackets 31 and 33 and the fixing brackets 34 and 35 may be coupled by screw holes and screws, respectively.

  FIG. 9 is a diagram showing an operation mode of the radiation generating apparatus of the present invention. As shown in FIG. 9A, since the auxiliary rail 14 is installed along the longitudinal direction of the first support column 11, it is possible to slide the slide portion 13 along the longitudinal direction of the first support column 11. it can. Since the slide part 13 is connected to the second support column 12 via the connection part 10, the radiation generating part 1 can be slid in the vertical direction in accordance with the slide of the slide part 13 in the vertical direction. Therefore, the operator 40 can lift the radiation generating unit 1 according to the position of the subject who performs radiation imaging.

  Next, as shown in FIG. 9B, the height of the radiation generating unit 1 is determined by raising the arm 2 that supports the radiation generating unit 1. From the form in which the arm 2 shown in FIG. 9A is housed together with the radiation generating unit 1 by rotating the arm 2 in a predetermined rotation direction via the arm hinge portion 5, the arm 2 shown in FIG. Can be deformed to extend upward or laterally. Further, as shown in FIG. 9A, when the arm 2 is housed together with the radiation generating unit 1, the arm 2 is folded and the arm 2 becomes substantially parallel to the second support column 12.

  Further, due to the action of the auxiliary member 41, the operator 40 can easily raise the arm 2 to the upper part of the second support column 12. The auxiliary member 41 is a member that assists in opening and closing the arm 2 with respect to the second support column 12. One end of the auxiliary member 41 is connected to the arm 2, and the other end is connected to the second support column 12. The auxiliary member 41 gives the arm 2 a force opposite to the direction in which the weight of the arm 2 is applied. Therefore, the auxiliary member 41 can reduce the operation force of the rotation of the arm 2 with respect to the second support column 12.

  In the preparation work before the X-ray imaging described above, the order of the lifting work and the arm swinging work shown in FIGS. 9A and 9B may be reversed.

  FIG. 10 is a view showing a photographing form of the radiation generating apparatus of the present invention. The operator 40 operates the handle 9 to move the radiation generating apparatus to the vicinity of the bed 42 on which the subject 44 lies. The radiation generating apparatus is moved to a position where the first column 11 is in contact with the side surface of the bed 42. At this time, the leg portion 6 is disposed in a space between the bed 42 and the floor surface.

  A radiation detector 43 is installed on the back of the subject 44 lying on the bed 42 according to the position of the imaging region. The operator 40 can easily adjust the horizontal position of the radiation generating unit 1 to the position of the imaging region and the radiation detector 43 by operating the handle 9 and moving the moving unit 8 with wheels.

  As described above, according to the radiation generating apparatus of the present embodiment, the movable unit 8 that supports and moves the first support column 11, the radiation generating unit 1 that generates radiation, and the arm 2 that supports the radiation generating unit 1. And a second support column 12 that supports the arm 2 and a connection portion (connection portion) 10 that is installed on one side surface of the first support column 11 and connects (connects) the first support column 11 and the second support column 12. And a slide part 13 that slides the connection part 10 in the longitudinal direction of the first support column 11. Therefore, the operator can easily perform the connection work (detachment work) between the support part that supports the radiation generation part and the moving part having the wheels.

  FIGS. 11-13 is a figure which shows the apparatus for radiation generation regarding Example 2 of this invention. The difference from the first embodiment is that the connection portion 10 is inclined toward the first support column 11 before the second support column 12 is connected to the connection unit 10. That is, when the 2nd support | pillar 12 is not connected to the connection part 10, the connection part 10 inclines to the 1st support | pillar 11 side (support | pillar side).

  FIG. 11 shows a preparatory stage for connecting the second support column 12 to the connecting portion 10. FIG. 12 is a schematic view of the portion A in FIG. 11 as viewed from above.

  As described above in the first embodiment, the connection portion 10 has a shape that matches the outer shape of the second support column 12. Therefore, when the second support column 12 is coupled to the connection unit 10, the operator needs to match the position of the connection unit 10 with the position of the second support column 12 accurately. Therefore, as shown in FIG. 12, a tapered guide portion is set inside the opening of the connection portion 10. The end portion (lower end portion) of the second support column 12 is configured to be narrowed by one step from the outer shape. With this structure, the inner width L <b> 5 of the opening of the connection portion 10 is wider than the width L <b> 21 of the lower end portion of the second column 12. Therefore, even if the operator places the second support column 12 in front of the connection unit 10 with a coarse positional accuracy by the difference of L5-L21, the position of the second support column 12 is connected by the guide portion due to the taper of the connection unit 10. It is possible to enter the inside of the part 10.

  FIG. 13 shows a connection form when the second support column 12 is connected to the connection unit 10. As shown in FIG. 13A, in the case where the second support column 12 is inserted into the connection portion 10 erected in the substantially vertical direction, in the region where the second support column 12 and the connection portion 10 indicated by the arrow A are in contact with each other, Resistance due to friction is generated. The connecting portion 10 is required to contact the connecting portion 10 over a wide range without any gap in order to eliminate looseness after the connection with the second support column 12. As this insertion operation progresses, the frictional resistance increases and becomes a factor that makes the operation difficult.

  Therefore, in this embodiment, as shown in FIG. 13B, when the second support column 12 is not connected to the connection unit 10, the connection unit 10 is inclined toward the first support column 11 side. Specifically, the connecting portion 10 falls backward at the stage where the second support column 12 is inserted, and has an angle with respect to the vertical direction.

  In this way, when the connection portion 10 falls backward (to the first support column 11 side), the contact area between the second support column 12 and the connection unit 10 is reduced in the insertion operation, so that the insertion operation can be easily performed. it can. Note that the tilting mechanism of the connecting portion 10 can be similarly applied to a connecting portion in a base portion to be described later, and the insertion work can be easily performed when the second support column 12 is connected to the base portion. .

  14-16 is a figure which shows the apparatus for radiation generation regarding Example 3 of this invention. The difference from the first embodiment is that the second support column 12 that supports the radiation generating unit 1 and the arm 2 can be connected (detachable) to a base unit 51 different from the moving unit 8.

  FIG. 14 shows that the second support column 12 supporting the radiation generating unit 1 and the arm 2 is between the moving unit 8 side having a wheel (moving structure) and the base unit 51 side having no wheel (fixed structure). The form which is detachable is shown.

  The fixed structure has a base portion 51 for raising the second support column 12 and a connection portion 50 connected to the second support column 12. Since the connection part 50 has the same structure as the connection part described in the first embodiment, detailed description thereof is omitted. The second support column 12 can be easily connected to the base portion 51.

  The base 51 has a U-shape or U-shape. The base 51 realizes a form in which the base 51 is not installed directly below (in the vertical direction) of the radiation generator 1 while maintaining the balance of the radiation generating device. A radiation detector is installed directly below the radiation generation unit 1 (downward in the vertical direction). That is, the radiation detector is installed in an area where the base part 51 is not installed.

  Specifically, the base part 51 has a plurality of legs. The plurality of legs are in contact with the floor (or bed), respectively. The plurality of legs are placed on the floor so as to maintain the balance of the radiation generating apparatus. The base 51 can be formed into a U-shape or U-shape by deforming a plurality of legs. At the time of shooting, as shown in FIG. 15, the base 51 has a U-shape or U-shape.

  The base portion 51 includes a first leg portion that supports the connection portion 50 that is coupled to the second support column 12, and a second leg portion (including one end portion) that is coupled to the first leg portion. , And a third leg (including the other end) connected to the first leg.

  The tip of the second leg has a slope (taper) so that the thickness of the tip of the second leg is gradually reduced. Similarly, the tip of the third leg has a slope (taper) so that the thickness of the tip of the third leg gradually decreases.

  The base part 51 has a plurality of joint parts so that a plurality of legs constituting the base part 51 can be folded. Specifically, it has a joint part for adjusting the angle between the first leg part and the second leg part. Similarly, it has the joint part which adjusts the angle between a 1st leg part and a 3rd leg part.

  The distance between the second leg and the third leg is set by a radiation detector that detects the radiation transmitted through the subject when the radiation generator 1 irradiates the subject and converts it into an image. It is set to be possible.

  FIG. 16 shows a photographing form using the base 51 (fixed structure). A radiation detector 43 is installed on the floor or on the bed. The operator installs the radiation detector 43 between the plurality of legs. The subject 44 is lying on the radiation detector 43. At this time, the base 51 is installed on the back surface of the subject 44.

  The operator swings up the arm 2 and places the radiation generator 1 directly above the imaging region of the subject. At this time, as shown in FIG. 16, the arm 2 may have a structure having a joint, and the horizontal position of the radiation generating unit 1 can be adjusted by rotating the arm 2 around the joint.

  Although not shown in FIG. 16, the structure of the arm 2 may be a telescopic structure that is not a joint but a telescopic mechanism, and the horizontal position of the radiation generating unit 1 may be adjusted using a telescopic mechanism. The joint structure of the arm 2 and the telescopic structure of the nesting type may be applicable even if the shape is connected to the moving structure of the first embodiment.

  17 and 18 are diagrams showing the configuration of the locking mechanism of the radiation generating apparatus according to the fourth embodiment of the present invention.

  FIG. 17 shows a form in which the second support column 12 is connected to the connection unit 50. Particularly, the part related to the locking mechanism is shown in the enlarged right side of FIG. The second support column 12 is provided with a lock lever 60 that rotates about the lever shaft 61. The connection portion 50 is provided with a lock 65 that rotates about the lock shaft 66.

  A return spring is attached to the lock 65, and receives a reaction force of the spring so as to always rotate downward in the vertical direction. As shown in the enlarged view of FIG. 17, when the second support column 12 is lowered vertically, the lock fixing portion 62 of the lock lever 60 contacts the lock 65, and the lock 65 is locked by the action of the return spring. It pivots along the part 62. When the support structure portion 2 is further pushed downward in this state, the lock 65 is engaged with the lock fixing portion 62 as shown in FIG. With this structure, the second support column 12 can be connected to the connection portion 50 and fixed. This locking mechanism may be applied in place of the coupling mechanism of the fixing brackets 31 and 33 shown in FIG. 7 of the first embodiment and the fixing brackets 34 and 35 of FIG.

  As described above, according to the present embodiment, the second support column 12 that supports the radiation generating unit 1 and the arm 2 can be connected (detachable) to the base unit 51 different from the moving unit 8. Therefore, the operator can select and use either the moving structure of the moving unit 8 with wheels or the fixed structure of the base unit 51 without wheels according to the shooting situation.

  In addition to the α-rays, β-rays, γ-rays, X-rays, etc., which are beams produced by particles (including photons) emitted by radioactive decay, the radiation includes beams having the same or higher energy, such as particles. Lines and cosmic rays are also included.

  Moreover, although the leg part 6 in the radiography apparatus of this invention was demonstrated as a plate-shaped member, it is not restricted to a plate-shaped member, It has a predetermined rigidity and is a member which can be folded with respect to the moving part 10 If so, it is applicable. For example, the leg portion 6 can be applied as a member having a plurality of rod shapes, a net-like member, a member having a curved surface, or the like.

  A radiation imaging system according to the present invention includes the radiation generating apparatus and a radiation detector that detects radiation that has passed through the subject and outputs image data corresponding to the radiation.

DESCRIPTION OF SYMBOLS 1 Radiation generation part 2 Arm 3 Rotating part 5 Arm hinge part 6 Leg part 7 Support leg hinge part 8 Moving part 9 Handle 10 Connection part 11 1st support | pillar 12 2nd support | pillar 13 Slide part

Claims (14)

  A movable part that supports and moves the first support column, a radiation generation unit that generates radiation, an arm that supports the radiation generation unit, a second support column that supports the arm, and the first support column And a connecting portion that connects the first strut and the second strut, and a slide portion that slides the connecting portion in the longitudinal direction of the first strut. A device for generating radiation.   The radiation generating apparatus according to claim 1, further comprising a handle held by an operator on the first support column.   The radiation generating apparatus according to claim 1, wherein the slide part moves the connection part to a vicinity of a floor surface.   The radiation generating apparatus according to claim 2, wherein the slide part slides the connection part from a height of the moving part to a height of the handle.   The radiation generating apparatus according to claim 2, wherein the connection portion is installed on an opposite side of the handle in the first support column.   3. The radiation generating device according to claim 2, wherein the connection portion is installed on a traveling direction side in which an operator pushes the handle to advance the radiation generating device with respect to the first support column. apparatus. A leg portion that is foldable with respect to the moving portion;
The radiation generating apparatus according to claim 1, wherein the connection portion is installed on the leg side with respect to the first support column.   The radiation generating apparatus according to claim 1, wherein an auxiliary rail for assisting sliding of the slide portion is provided on one side surface of the first support column.   The radiation generating apparatus according to claim 8, wherein the auxiliary rail is installed along a longitudinal direction of the first support column.   The radiation generating apparatus according to claim 1, wherein the connection portion has a shape that covers an outer shape of the second support column, and has a shape that is open in one direction.   2. The radiation generating device according to claim 1, wherein a projection is installed at an end of the second support column, and a hole that fits into the projection is installed inside the connection unit. apparatus.   The radiation generating apparatus according to claim 1, further comprising a lock mechanism that locks the second support column and the connection portion.   The radiation generating apparatus according to claim 1, wherein when the second support column is not connected to the connection portion, the connection portion is inclined toward the first support column side.   Radiation comprising: the radiation generating apparatus according to any one of claims 1 to 13; and a radiation detector that detects radiation that has passed through the subject and outputs image data corresponding to the radiation. Shooting system.

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