JP2004160263A - Roentgenography apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roentgenography apparatus, preferable for use in roentgenography while a doctor performs curing, and positioning a patient in a height to easily work according to the curing contents. <P>SOLUTION: This roentgenography apparatus is composed of: a table 12 of a bed 10 where the patient is placed; a table support device 60 having a function of inclining the table by a shaft right-angled in the longitudinal direction of the bed and moving up and down the table; an X-ray radiation device 250 located at a distance from the upper surface of the table above the patient side of the bed; and an X-ray detector 160 located below the table. The support device 60 has a lateral support supporting the bed from the side of the bed and a vertical support mechanism for moving up and down the lateral support, and the vertical support mechanism is disposed on one side of the bed and is positioned closely to the end part from the center in the longitudinal direction of the bed. The roentgenography apparatus secures a space for installing another treatment appliance without obstructing the movement and the curing work of a doctor in the periphery of the bed for curing the upper half body of a person (the patient). <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to an X-ray imaging apparatus, and more particularly to an X-ray imaging apparatus that does not hinder movement and treatment of a doctor around a bed.

  Conventional X-ray imaging apparatuses have been used for imaging for the purpose of early detection of diseases and the like. With the advancement of medicine, the demand for not only making a diagnosis but also taking a picture during treatment has increased, and it has become necessary to respond to this.

  Conventionally, there is no known device that can efficiently perform treatment and imaging at the same time in response to a request to perform X-ray imaging during treatment.

  An object of the present invention is to provide an X-ray imaging apparatus which is suitable for a doctor to perform X-ray imaging while performing treatment.

  Another object of the present invention is to provide an X-ray imaging apparatus capable of positioning a patient at a height at which work can be easily performed according to the treatment content.

  In an X-ray imaging apparatus according to one aspect of the present invention, there is provided a table of a bed on which a subject is placed, and a table support device having a function of tilting the table about an axis perpendicular to the longitudinal direction of the bed and moving the table up and down. An X-ray irradiator positioned above the bed at a distance from the upper surface of the subject, and an X-ray imaging device positioned below the table. A vertical support mechanism for supporting the table and supporting the table at one end in the longitudinal direction of the bed, and the X-ray imaging apparatus includes: It is characterized in that it is attached to the bottom surface at the other end in the longitudinal direction. This can prevent the bed support device from interfering with the treatment.

  According to the present invention, since the vertical support mechanism of the bed is arranged on one side of the bed and on the end side from the center in the longitudinal direction of the bed, for example, at the foot side of the patient, The movement of the doctor around the upper body bed and the treatment work are not hindered, and the space for installing other treatment instruments can be secured.

  FIG. 1 shows an X-ray imaging apparatus having a bidirectional perspective imaging function according to an embodiment of the present invention. FIG. 2 is an enlarged view of the bed 10. The table 12 of the bed 10 on which the subject is placed has a top plate 14, which is made of a material that transmits X-rays. An X-ray irradiator 250 suspended from the ceiling 6 is arranged at a predetermined distance from the top plate 14. On the other hand, on the lower side of the table 12, an X-ray detecting means 160 for detecting X-rays passing through the subject is provided, and an X-ray image is taken. An image indicating the transmission state of the X-rays is created by the detection means 160 and displayed on the monitor device 400. The operation of controlling the height and the rotation angle, that is, the inclination angle of the table 10, to maintain the position and direction of the subject in a desirable state, the operation of controlling the position of the X-ray irradiation device 250, and the operation for imaging are performed by a proximity console. 500.

  In this embodiment, a bed 10 on which a subject is to be placed is fixed to a floor 2 of an examination room by a support mechanism 60 in parallel with walls 4 and 5 of the examination room. The X-ray irradiator 250 is held on the ceiling 6 via rails 260 and 262 for movement and a supporting cart 252. The monitor device 400 and the proximity console 500 are held by rails 450 and 452 provided on the ceiling 6 of the inspection room via arms 462 and 562 and a support truck 552 commonly used, respectively. With such a configuration and arrangement, the X-ray irradiation device 250, the monitor device 400, and the proximity console 500 can be arranged separately from the periphery of the bed 10. Accordingly, when the X-ray is taken while treating the subject, the surroundings of the bed 10 are open, the obstruction for the treatment of the doctor is reduced, the effect is easy, and the effect that the subject is easily approached is obtained. is there. In addition, it is possible to achieve the purpose and effect such as easily securing a space for placing other treatment instruments. Furthermore, since the support mechanism 60 is arranged on the wall side of the bed, a space for a doctor's treatment can be effectively secured. In addition, since the height of the support mechanism 60 is lower than the top plate 14 of the bed 10 being treated, there is no hindrance during treatment by a doctor.

  The head side 20 of the table 12 of the bed 10 is open, while a footrest 26 is provided on the foot side 22 of the table 12. When the table 12 of the bed 10 is turned upright, the footrest 26 is close to the floor 2, and the subject puts his feet on the footrest 26 and stands with his / her back on the table 14 of the table 12. The subject to the desired position and orientation by turning the Rails 27 and 28 are attached to both side surfaces of the bed 12, and accessories such as a grip 30, a shoulder pad 34, and a compression cylinder 36 are attached to the rails 27 and 28 as needed. These can be moved along the rails 27 and 28 to a position suitable for the subject. Since the rails 27 and 28 are fixed to the side surface using the thickness of the table 12 instead of the upper surface of both sides of the table 12, it is not necessary to provide a space for the rail width on both sides of the table 12, and the bed width is reduced. It has the purpose and effect of making it easy for doctors to perform medical examinations. In addition, since the rail having the groove is moved from the upper surface of the table to the side surface, there is an object and an effect that it is extremely easy to wipe off dirt such as a value, blood, and chemicals on the upper surface of the table. The support mechanism 60 is provided so as to be offset from the longitudinal center 38 of the table 12 toward the end, and it is possible to eliminate as much as possible an obstacle in the arrangement of instruments necessary for the action of the doctor and the treatment around the bed 10. effective. In this embodiment, the bed 12 is biased toward the foot 22 instead of the head 20. The treatment of the subject is more likely to be performed from the upper body to the head. In this embodiment, there is an object and effect that the head side can be opened from the center 38 of the bed 12. Further, each corner of the cover of the support mechanism 60, that is, the case 90 is rounded, and the opposite side to the bed is curved, so that the thickness of both sides 92 of the case 90 with respect to the distance from the end of the table of the central portion 91, that is, the thickness. Is reduced. This minimizes any obstacles to treatment and prevents doctors and nurses from being hit and injured.

  FIG. 3 is an embodiment showing a control mechanism for up and down and rotation, that is, tilt of the table 12. The floor base 62 is fixed to the floor 2 of the inspection room with four anchor bolts. The hydraulic cylinder 80 is fixed to the floor base 62 and moves up and down the horizontal support 68 supporting the table 12. The horizontal support 68 is fixed to an upper end of a lifting cylinder 80 by a vertical moving frame 64 and a horizontal support fixing device 66. The encoder 45 that detects the absolute height of the vertical movement detects the height of the top plate 14 of the table 12 from the movement of the belt fixed to the elevating frame 64. Further, a descending overrun switch 84 for detecting a descending overrun and a climbing overrun switch 86 for detecting a rise overrun are provided so that the ascent and descent are not performed beyond the safe range. All of these devices act as a bed support mechanism and are covered by a case 90.

  The hydraulic cylinder 80 is of a three-stage telescopic system, and its driving oil pressure is generated by a hydraulic unit 72 of a control box 70 and sent to a computer-controlled valve unit 76 through a pipe 74, and from this valve unit 76 through a pipe 78. It is added to the hydraulic cylinder 80 through a check valve 79. Since the hydraulic cylinder is used, the entire bed support mechanism is reduced in size, and the purpose and effect of making the periphery of the bed more open are obtained. Further, the combination of the hydraulic cylinder 80 and the lifting / lowering moving frame 64 can reduce the width of the table support mechanism, reduce the thickness of the case 90 surrounding the table support mechanism, and even if it is located on the side of the table, it does not obstruct the treatment of a doctor. It has an effect. The check valve 79 has a function of closing the valve so as to prevent communication between the pipe 78 and the cylinder 80 so that the hydraulic pressure in the cylinder 80 does not decrease when the hydraulic pressure of the pipe 78 decreases due to some abnormality. As a result, there is an object and effect that the table can be prevented from being lowered due to the above-mentioned abnormality and the security can be maintained. Also, even if there is a mistake in the operation of raising and lowering the table, the movement exceeding the safe movement range is detected by the overrun switches 84 and 86, and the computer automatically controls the valve unit 76 with these outputs, Stopping the ascending or descending movement has the effect of maintaining safety.

  The control of the rotation or inclination of the bed is performed by the hydraulic motor 104 for raising and lowering. A hydraulic pressure of a predetermined pressure is sent from the hydraulic unit 72 to the hydraulic motor 104 for raising and lowering via the pipe 74, the valve unit 76, and the pipe 102. The motor 104 is configured to rotate when hydraulic pressure is supplied. This rotation is transmitted to the worm gear irregularity machine 106, the angle with respect to the lateral support 68 changes, and the table 12 rotates with respect to the lateral support 68. This rotation direction is performed by switching the valve of the valve unit 76. The rotation angle is detected by the tilting encoder 108, and the rotation overrun is detected by the tilting overrun switch 110. Since the inclination of the table is controlled by the hydraulic motor 104, there is an effect that the entire apparatus is reduced in size. The motor 104 has a speed reducer 106, and the anomaly device 106 has a self-locking function. Therefore, when the hydraulic pressure of the pipe 102 becomes abnormal for some reason, the rotation of the motor 104 is locked by the speed reducer 106, The inclination of the table is kept unchanged. This has the effect of maintaining safety.

  FIG. 4 is an explanatory view of the grip 30 of the bed. The grip 30 is detachably attached to the rails 27 and 28 on both sides of the table by fixing devices 32, respectively. The grip 30 has a grip foot 31, which is configured to sandwich the fixing device 32, and is rotatably attached to a side portion of the fixing device 32. When the doctor rotates the grips 30 on both sides onto the upper surface of the table 12, the table-side surfaces of the grip feet 31 hit the surfaces of the rails 27 and 28 and are fixed. On the other hand, when the grip 30 is in the way, for example, when the subject is moved from the stretcher to the top board, the connection between the grip foot 31 and the fixing device 32 is rotated by opening the grip outward, and the grip 30 falls down. In addition, the grip fits under the table in a state in which it is located inside the rail surface, which is the side surface of the table, by the amount of contact with the top plate surface of the bottom rail at the lower side of the grip 30. This has the effect of not disturbing. The head side of the grip is inclined at an angle of, for example, about 45 degrees and is connected to the lower side of the grip. This oblique part where the head is sometimes lowered in the radiographing is easy to apply force by grasping, and the anxiety that the subject feels that the body may fall due to slipping conventionally can be reduced. Note that the side of the grip on the foot side may not be oblique but may have a shape close to 90 degrees as before.

  5 and 6 show control of the aperture mechanism 120, which is an X-ray mask function. The table 12 of the bed 10 has a top plate 14 as an upper plate and a diaphragm mechanism 120 having a mask function below the top plate 14. As shown in FIG. 5, the table 12 is rotatable as indicated by an arrow, the aperture mechanism 120 is movable in X and Y directions, and the imaging device 160 is also movable in X and Y directions.

  The aperture mechanism 120 includes upper and lower division masks 124 and 125 and upper and lower division masks 126 and 127 movably attached to an aperture mechanism frame 122, an upper and lower mask motor 130 and a wire rope 132 for moving the upper and lower division masks 124 and 125, and a left and right mask. A left and right mask motor 134 and a wire rope 136 for moving the divided masks 126 and 127, an origin detection sensor 140 for detecting the origin of the upper and lower divided masks 125 and an overrun sensor 142 for detecting overrun, and the origin of the left and right divided masks 126. It comprises an origin detection sensor 144 for detecting and an overrun sensor 146 for detecting overrun.

  X-ray irradiation is harmful to the human body, and the irradiation place should be limited to a necessary part. The irradiation part is narrowed down by an X-ray irradiator, but it is preferable to take an X-ray photograph of only a necessary part. Therefore, by operating the console 500 described later, the upper and lower mask motors 130 and the left and right mask motors 134 are controlled to control the surrounding ranges of the upper, lower, left and right masks 124, 125, 126, and 127 to desired values and positions. This has the purpose and effect of improving image quality as well as preventing X-ray scattering. In order to improve the control accuracy, DC motors are used as the motors 130 and 134, respectively. Here, the vertical direction indicates the X direction in FIG. 5, and the horizontal direction indicates the Y direction.

  FIG. 7 shows the imaging mechanism 160 located below the bed 10. Rails 154 are provided on both inner sides of the support frame 150 provided below the table 12 for holding the imaging mechanism 160 and further enabling movement in the Y direction indicated by the arrow 152. In the figure, only one side is shown. In this embodiment, the term rail is used in a very broad sense. For example, only a groove having a concave shape, not a convex structure, is elongated, and a groove that moves while being guided by the groove is also described as a rail including the elongated groove. In the figure, the position of the imaging mechanism 160 held by the rail 154 is controlled by a motor 156 fixed to the support frame 150 and a chain 158 that transmits the rotation of the motor 156 and moves the imaging mechanism 160 along the rail 154. A signal indicating the value of this position is detected and generated by the absolute value sensor 162. Further, in order to prevent the movement of the imaging mechanism 160 in the Y direction from exceeding a safe range, two overrun detection switches 164 and 165 for detecting that the movement has exceeded a predetermined range are provided in the video system moving frame 166. ing.

  An image receiving device 168 that converts X-rays into light having an intensity corresponding to the intensity of the X-ray is attached to the image-based moving frame 166 via an attachment frame 170. Light generated by the image receiving device 168 is guided to a camera 174 via an optical path 172. The X-ray image detected by the camera 174 is displayed on the monitor 400, recorded and photographed by an operation. FIG. 8 is an enlarged view of the image receiving device 168. The movement control of the imaging device 168 in the X direction indicated by an arrow 176 in FIG. 8 is performed by the motor 178 and the reduction gear 180 fixed to the moving frame 166, the rack 184 fixed to the mounting frame 170, and the rotation by the reduction gear 180. This is done by the pinion 182 being turned on. The entire moving frame 166 is moved in the X direction by the motor 156 and the chain 158, and is moved in the Y direction by the rotation of the motor 178 in the moving frame 166 by the pinion 182 and the rack 184. The position in the Y direction is detected by an absolute value sensor 186 that receives the rotation of the pinion via a belt 188. Since the imaging device is moved by this mechanism, the moving device in the X and Y directions can be reduced in size and thickness, thereby reducing restrictions on the height of the bed. Therefore, even if the table 12 is lowered downward as needed, it does not hit the floor of the examination room. For this reason, when imaging while performing treatment, the height of the patient on the table can be maintained at a height that facilitates treatment. In addition, since these devices are located below the bed and do not protrude from the periphery of the table, a space for other treatment instruments can be secured, and the movement of doctors and nurses is not hindered.

  FIG. 9 is a diagram showing a state in which a doctor performs treatment, or a diagram showing a state in which the subject's head is lower than the foot in X-ray imaging. If the table 12 is low, the doctor needs to bend the knee when performing treatment or the like, so that sufficient treatment cannot be performed. Moreover, even if it is too high, treatment cannot be performed smoothly. Therefore, when performing treatment, it is desirable that the height L2 of the top plate 14, which is the upper surface of the table 12, be 800 mm or more and the height adjustment range L1 be about 400 mm. When the height from the floor is set, it is desirable to move up and down in a range of 800 mm to 1200 mm. When the top plate 14 is lowered, if the upper end of the support mechanism 60 of the table 12 is higher than the top plate 14, the treatment will be obstructed again. Therefore, the cylinder 80 in the support mechanism 60 is a three-stage cylinder, and keeps the height in the contracted state low. Further, since the height of the imaging device 160 is kept low, the table 12 can be lowered. The vertical movement speed of the table is not constant but variable. This is because it is possible to select whether to move the table slowly depending on the health condition of the subject or to move the table quickly to end the X-ray imaging earlier. It is also possible for a doctor or a laboratory technician to select a plurality of moving speeds in advance, thereby reducing the burden on the doctor or the like and concentrating on treatment such as surgery.

  A broken line indicates a case where the table 12 is rotated in a direction to lower the head. This operation is performed at a remote or proximity console. When this operation is instructed, the table and the support mechanism 60 are automatically raised to a predetermined height and the head of the table is lowered. At this time, the ascending speed of the table is made faster than the tilting speed of the table. When a plurality of rising speeds can be set, the table automatically rises at a speed faster than the minimum rising speed. This is because the tilting operation is performed as quickly as possible. That is, when X-ray imaging of the state of the stomach is performed, an operation of lowering the head may be performed, but the imaging time cannot be too long due to the state of the stomach of the barium. The purpose is to cope with such a situation.

  The reason why the lower surface 13 on the head side end of the table 12 is cut at about 45 degrees is that the table 12 does not hit the floor even when the table is inclined as shown in the figure. The reason why the lower surface 173 of the head side end of the imaging device 160 is similarly cut is to prevent the lower surface 173 from hitting the floor surface. As can be seen from this figure, the support device 60 of the table 12 is provided on the foot side from the center in the longitudinal direction of the table. This is for the purpose of not disturbing the action of the doctor regarding the treatment from the head to the abdomen, and to secure the installation place of the treatment instrument as much as possible.

  FIG. 10 illustrates the insertion of a film called cassette 190. This film is a film that is sensitive to X-rays, and can produce shades of black depending on the intensity of the X-rays. This film is placed in a case and is called a cassette. The cassette 190 is inserted below the top plate 14 and the squeezing mechanism 120 of the table 12 from the insertion opening 192, and is inserted into a support frame 150 constituting a lower portion of the table 12. The table 12 is formed by providing a relatively hard top plate 14 and rails 27 and 28 for attaching accessories on both sides, and the cassette 190 is inserted inside the table 12 and an aperture mechanism 120 is provided. , The image receiving device 168 of the imaging device is suspended. These devices are damaged when they collide with other devices, but are protected by the top plate 14 of the table 12 and the side of the table 12 to which the rails 27 and 28 are attached.

  FIG. 11 is a diagram in which a film changer 198 for automatically replacing a film sensitive to X-rays and photographing several X-ray images is used instead of the imaging device 160. The imaging device 160 is moved to the foot of the table 12 by the operation of the proximity console 500. This movement is performed by the movement motor 156 along the rail 154 of the support frame 150 under the table. The film changer 198 has a moving vehicle below it, and is inserted inside the rails 154 on both sides of the support frame 150 to perform continuous shooting. With such a configuration, there is an effect that the film changer 198 can be easily and quickly inserted.

  In FIG. 1, the X-ray irradiator 250 is movably suspended by X-direction rails 260 and 262 fixed to the ceiling 6 and Y-direction rails 264 and 266 held by these rails. The X-direction rails 260 and 262 are fixed to the ceiling above the bed 10 in the X direction, which is the longitudinal direction of the bed 10, and by moving along the X-direction rails 260 and 262, the X-ray irradiation device 250 It moves in the X direction, which is the longitudinal direction. Further, the Y-direction rails 264 and 266 movably supported thereon are parallel to the direction Y of the short side of the bed 10. Therefore, the X-ray irradiation device 250 can be moved along the Y direction of the bed 10 by moving along the Y direction rails 264 and 266.

  In this specification, the rail is used in a very broad sense, and includes not only a protruding elongated member, but also a concave member that extends in a concave shape and includes a guide that extends in a concave shape. Express as a rail.

  The moving mechanism in the X direction and the Y direction is shown in FIGS. The X-direction motor 270 is fixed to the Y-direction rail 264, and the rotational driving force of the X-direction motor 270 is transmitted to the pinion 274 engaged with the rack 276 provided on each of the X-direction rails 260 and 262 via the harmonic reducer 272. Can be By controlling the rotation direction and speed of the X-direction motor 270, the movement direction and movement speed of the Y-direction rails 264 and 266 can be controlled. Guide rails 280 and 282 are provided on the X-direction rails 260 and 262, respectively, and guide wheels 286 provided on the Y-direction rails 264 and 266 move along the guide rails 280 and 282, respectively. The Y-direction rails 264 and 266 are moved by the motor 270. The guide wheels 286 of both rails 264 and 266 are covered by the LM guide 284.

  FIG. 13 is a view for explaining the movement of the box 290 with respect to the Y-direction rails 264 and 266. A rack 296 is provided on the Y-direction rail 264, and a pinion 294 to which rotation is transmitted from a motor 292 fixed to the box 290 via a reduction gear moves the box 290 according to the rotation direction and speed of the meshing motor 292 engaged with the rack 296. I do. Guide rails 300 and 302 are provided inside the X-direction rails 264 and 266, respectively, and a guide wheel 306 provided in the box moves along the guide rails. In this box 290, an X-ray irradiation device is suspended.

  Although not shown in FIGS. 12 and 13, a microswitch is provided on the Y-rail or the box 292 to detect that the vehicle is out of the safety area, and to send a signal to a computer (not shown) to issue an alarm and automatically. Stop. The traveling vehicle 252 of FIG. 1 incorporates the motors and reduction gears 270, 272, 292 and the box 290 of FIGS. 12 and 13. With the above configuration, the X-ray irradiator can be easily moved in the X and Y directions, and the X-ray irradiator and the imaging unit can be smoothly moved in a predetermined relationship without moving the bed, so that necessary imaging can be performed. . In addition, since the bed does not move in the X and Y directions, the treatment instrument can be mounted, and the burden on the patient can be reduced. The control motor uses a direct current (DC) value, so that it is possible to precisely control the speed and control the direction.

  Next, the proximity console 500 will be described. As will be described later, the operation panel is provided in a separate room to protect doctors and X-ray technicians from exposure to X-rays, and is operated through windows and using a microphone or other device while talking to the subject. It is usual to do. However, while performing surgery due to advances in medicine, or performing treatment such as inserting a therapeutic instrument into a blood vessel, the subject's internal condition and the state and position of the instrument's insertion in the body are confirmed with X-rays. And so on. For this reason, in addition to the original operation panel in a separate room, a proximity console that can be operated immediately at the place while performing the above-described treatment or surgery has become indispensable.

  This proximity console will be described with reference to FIG. 14, FIG. 15, and FIG. The proximity console 500 has a shape in which the near side is narrow and the back side which is one side is wide, so that the front-back relationship can be seen at a glance. This is because doctors and nurses can focus on other tasks such as treatment. The case 510 having such a shape is covered with a soft material such as urethane foam. This is to avoid injury when touching or hitting the console while concentrating on other tasks. In addition, the four corners, 514, 515, 516, and 517 of the case 510 are rounded, and it is necessary to make the corners 5 mm or more, preferably 20 mm or more from the above-mentioned objects and effects. In this embodiment, the corners 514 and 517 are rounded at 30 mm, and the corners 515 and 516 are rounded at 50 mm. There is a grip 512 in front, which can be used to pull the console. The back of the grip 512 is provided with a horizontally long hole 520 having a width of 30 mm to 50 mm. The operator can move the console up and down, left and right, and up and down only by putting his hand in the horizontally long hole 520 without grasping the grip 512. The corner 522 at the back of the longitudinal hole is also rounded and is 15 mm. However, since it is not a convex angle but a concave angle, it is small and has an effect of easily removing dirt such as blood and chemicals. Inside the case 510, there are a large number of operation switches, joysticks, and display devices.

  FIG. 15 is a side view, and FIG. 16 is a sectional view. A switch and a joystick are provided at the center of the case 510, while a back cover 524 is provided on the back surface. The back cover 524 is held by an arm hanging from the ceiling or a base having wheels described later. The back cover 524 is smaller than the case 510, and the periphery of the case is curved and easy to grasp. In this embodiment, the periphery 526 is a curved surface close to a circle. There is a recessed groove 527 on the back side to create a hook for the hand. The thickness 528 is desirably 20 mm to 60 mm from the viewpoint of ease of movement of the proximity console. The joystick is arranged in the projection plane of the back cover 524, and the problem of the dimensional relationship of the joystick detection unit is solved by the thickness of the back cover 524.

  In FIG. 14, a photographing state display unit 546 that displays photographing conditions and states is provided at the center of the back side 540. Next to this is an interlock release display section 544 that indicates the release state of the interlock. By bringing the display unit to the outside, that is, to the back, the display is easy to see without disturbing. There is an overall lock switch 542 at the left end. This switch 542 is intended to prevent malfunctions caused by accidentally touching or hitting a switch or joystick on the operation console, and has an effect of increasing the concentration of doctors and nurses on treatment. Yes. An emergency switch 548 is provided at the right end. This is displayed in red, and pressing this switch stops all operations. This switch 548 is located at the far right of the right end and is easily visible, which is effective for accurate and quick operation.

  The switch group 552 has a function of controlling the position of the X-ray irradiating unit, and can move along the X-direction rail or the Y-direction rail, control the arm, and set the height. The switch 554 is a height setting switch of the X-ray irradiating unit, and two preset heights are prepared. By selecting one of these switches, the preset height can be selected and the position can be automatically determined, and the position can be quickly determined. And accurate operation becomes possible. The switch group 556 has a function of setting X-ray imaging conditions, and the switch group 558 selectively determines the size of the X-ray imaging unit, for example, 16 inches or 12 inches. A switch group 560 is a selection switch for determining the arrangement of captured images, and determines, for example, whether to arrange four images or one image to two images. It should be noted that one of the monitor displays displays the enlarged one according to this condition. The switch group 562 is a switch for reversing the arrangement of the screen and for reversing the screen, and can operate the display of the X-ray image, and the photographing screen follows the operation. The switch group 564 has a control function and a setting function for automatic photographing. A switch group 590 has an aperture control function, a switch 591 has a function of moving the mask in the X direction and the Y direction in parallel, and a switch group 592 has a function of moving the mask alone, and the movement amount and direction are controlled by the joystick 594. Is

  The switch group 610 has a function of determining an X-ray irradiation range called a filter, and the switch 612 can selectively determine whether to widen or narrow the irradiation range. This filter is provided in the X-ray irradiator, and is performed by, for example, four aperture plates, and the movement of each of these aperture plates can be determined by using the joystick 614 for each. A switch group 570 has a function of controlling the relationship between the X-ray irradiation unit and the bed, a switch 576 has a function of controlling the raising and lowering of the table 10, and a switch 574 maintains the inclination of the table 12 as it is and only controls the irradiation angle of the X-ray. The switch 572 has a function of setting up a table for the subject to get on and off. The switch 578 has a function of lowering the head of the table. The rotation or tilt of the table can be freely controlled with a joystick. The table tilt is operated by the operation of both the switch 578 and the joystick 580 in order to prevent malfunction, and malfunction due to removal of an object can be prevented and safety is improved. The switch group 566 has a function of operating the compression tube, and the joystick 568 has a function of freely operating the compression tube. The switch group 620 has an X-ray imaging function, and the switch 622 has a function of weakening the X-ray dose for image confirmation before imaging. The switches 624 and 626 have a function of adjusting imaging timing and stopping X-ray irradiation after a predetermined time. The joystick 628 has a function of controlling the position of the light receiving unit, and has a shooting instruction switch above the joystick. Since the joystick 628 has a photographing instruction switch at the same time, it is possible to capture an image at an optimal timing, which leads to an improvement in accuracy and an increase in speed.

  In the above arrangement, the joystick is positioned in front of the joystick, and the operation switch is positioned next to the joystick. Although the switch group 556 in the initial setting is located at the back, the frequency of use is low, and since the examination is started, less nerve is used, so that the entire proximity console is made compact and easy to use.

  FIG. 17 shows a floor-mounted proximity console 800 according to another embodiment. A column 640 is attached to a platform 630 having four wheels 634, and the proximity console 500 is fixed to the column 640. Each of the four wheels 634 is mounted so as to be rotatable 360 degrees as indicated by arrows. The base 630 has a foot switch 632, which has a function of irradiating weak X-rays in order to determine the position of imaging. The upper surface of the proximity console 500 has a height from the floor 2 of 800 mm to 1000 mm, which is a height suitable for a doctor or a technician to stand and use.

  The operating device having the floor-mounted proximity console 800 has the same effects as those described for the arm-type fixed proximity console 500 described above, but also has the following effects. Since the height is predetermined, by moving the proximity console 800 on the floor sideways, it can be quickly moved to a desired position.

  FIG. 18 is a view from the top of the room. The photographing room 701 and the operation room 700 are separated by a wall, and the operation is performed through a window. The bed is placed in parallel with the wall, and X-direction rails 260 and 262 are fixed to the ceiling in the X direction which is the longitudinal direction of the bed. In this embodiment, the monitor 400 and the proximity console 500 are supported by the same X-direction rails 260 and 262. A dotted line 706 indicates a signal line. Since the same X-direction rails 260 and 262 are used, the whole is simple and inexpensive. Also, the monitor 400 and the cart 552 of the proximity console 500 are set so as to move in a range provided outside the moving range of the cart 252 of the X-ray irradiation unit, so that they are safe, and may not exceed these moving ranges. The contents are provided with respective overrun detection switches, so that malfunctions can be dealt with and safety is ensured.

  FIG. 19 shows the same operation, effect and purpose in the other embodiments by the same reference numerals. Rails 720 and 722 for a monitor or a proximity operation table are provided in parallel with the moving rail for the X-ray irradiation device.

  According to each of the embodiments of the present invention described above, the vertical support mechanism of the bed is disposed on one side of the bed and on the end side from the center in the longitudinal direction of the bed, for example, on the foot side of the patient. Therefore, the movement of the doctor around the bed of the upper body of the patient and the treatment work are not hindered, and a space for installing another treatment instrument can be secured.

1 is a diagram illustrating a configuration of an X-ray imaging apparatus having a two-way fluoroscopic imaging function according to an embodiment of the present invention. It is an enlarged view explaining the structure of a bed. It is a figure showing composition of a control mechanism which controls a posture of a bed. It is a figure showing composition of a grip of a bed. FIG. 4 is a diagram for controlling the control of a diaphragm mechanism that performs an X-ray mask function. FIG. 4 is a diagram for controlling the control of a diaphragm mechanism that performs an X-ray mask function. FIG. 2 is a diagram illustrating a configuration of an imaging mechanism that is an X-ray detection unit. FIG. 2 is an enlarged view illustrating a configuration of an image receiving device of the imaging mechanism. It is a figure explaining the state where a doctor treats a patient. FIG. 4 is a diagram illustrating insertion of a cassette loaded with a film. It is a figure explaining insertion of a film changer instead of a cassette. FIG. 3 is a diagram illustrating a configuration of a moving mechanism of the X-ray irradiation device. FIG. 3 is a diagram illustrating a configuration of a moving mechanism of the X-ray irradiation device. It is a front view which shows the structure of a proximity console. It is a side view which shows the structure of a proximity console. It is sectional drawing which shows the structure of a proximity console. It is a front view which shows the floor-mounted operation console which is another example of a structure of a proximity operation console. FIG. 2 is a plan view illustrating a layout state of the X-ray imaging apparatus according to the embodiment of the present invention, as viewed from above a room. It is the arrangement | positioning figure seen from the room explaining the other example of arrangement | positioning state of the X-ray imaging apparatus by one Embodiment of this invention.

Explanation of reference numerals

4, 5 Exam room wall 6 Ceiling 10 Bed 12 Table 14 Top plate 26 Footrest 30 Grip 34 Shoulder pad 36 Compression tube 60 Supporting mechanism 70 Control box 72 Hydraulic unit 80 Hydraulic cylinder 160 X-ray detecting means 168 Image receiving device 190 Cassette 198 Film Changer 250 X-ray irradiation device 400 Monitor device 500 Proximity console

Claims (12)

A bed table on which the subject is placed,
A table support device having a function of tilting the table about an axis perpendicular to the longitudinal direction of the bed and moving the table up and down,
An X-ray irradiator located at a distance from the table top on the subject side of the bed,
An X-ray image pickup device located at the lower part of the table,
The support device has a horizontal support for supporting the table from the side of the bed and a vertical support mechanism for raising and lowering the horizontal support,
The support device supports the table at one longitudinal end of the bed,
The X-ray imaging apparatus, wherein the X-ray imaging apparatus is attached to a bottom surface at the other end in the longitudinal direction of the bed.   2. The X-ray imaging apparatus according to claim 1, wherein the upper end of the vertical support mechanism is kept below the upper surface of the table when the upper surface of the table is placed horizontally within a range of 600 mm to 1200 mm.   2. An X-ray imaging apparatus according to claim 1, wherein the upper surface of said table is lowered to 800 mm or less.   2. An X-ray imaging apparatus according to claim 1, wherein the accessory mounting means is mounted on a side surface in a longitudinal direction of the table.   2. The X-ray imaging apparatus according to claim 1, wherein a lower surface of a head side end of the table is cut.   2. The X-ray imaging apparatus according to claim 1, wherein an insertion opening for inserting an X-ray imaging film is provided at an end of the table on the head side.   2. The table according to claim 1, wherein the table has a top plate on its top surface, rails for attaching accessories are provided on both side surfaces thereof, and an X-ray film is mounted inside a space formed by the top plate and the both side surfaces. An X-ray imaging apparatus characterized by being inserted from the side.   2. The X-ray imaging apparatus according to claim 1, wherein a lower surface of an end of the table of the X-ray imaging apparatus in a head side direction is cut.   2. The X-ray imaging apparatus according to claim 1, wherein a grip fixing means is provided on the side surface of the table, and a foot portion of the grip extends along the side surface of the bed and is rotatably supported by the grip fixing means.   The X-ray imaging apparatus according to claim 9, wherein at least a head side of the grip portion is inclined.   2. The X-ray image capturing apparatus according to claim 1, further comprising an X-ray image receiving unit, and a guide unit configured to move the X-ray image receiving unit, wherein the X-ray image receiving unit extends in a longitudinal direction of the bed via the guide unit. An X-ray imaging apparatus, which is movably mounted. 12. The X-ray imaging apparatus according to claim 11, wherein the X-ray image receiving unit is movably mounted via the guide unit in a direction orthogonal to a longitudinal direction of the bed.

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