Fluoroscopic apparatus

Abstract

To provide a lightweight arm structure which does not affect the internal structure of a stand, and in which a monitor can be arranged on the opposite side of the stand across an X-ray generator.SOLUTION: An upper surface rail is fixed to an upper surface of a stand, and a back surface rail is fixed to an upper portion of a back surface of the stand. An arm base portion is engaged with a slide rail, and an arm support portion is mounted on the arm base portion. An arm portion has a structure in which a vertical bar is fixed to a horizontal bar. The ends of the horizontal bar are connected to the arm support portion. The horizontal bar is rotatable relative to a central axis of the arm support portion. A monitor holder for holding a monitor is attached to the lower end of the vertical bar.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an X-ray fluoroscopic imaging device capable of fluoroscopy and imaging. [Background technology]

[0002] In recent years, interventional radiology (IVR), which uses X-ray fluoroscopy equipment to perform procedures such as inserting endoscopes and catheters into subjects while performing X-ray fluoroscopy, has become widely used. In IVR, fluoroscopic images and endoscopic images are displayed on a monitor (display device), and doctors perform procedures while looking at the images on the display device. For this reason, it is desirable to place the monitor in a location where the doctor can easily see it.

[0003] Patent Document 1 discloses an articulated arm having one end rotatably supported on the upper surface of a stand for an X-ray fluoroscopy device. A display device is attached to the other end of the articulated arm. In this structure, the display device is supported by the articulated arm supporting it on the upper surface of the stand. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-259884 Summary of the Invention [Problem to be solved by the invention]

[0005] The arm in Patent Document 1 is long enough to allow a monitor to be placed between the X-ray source and the stand. Therefore, the arm in Patent Document 1 is not long enough to allow a monitor to be placed closer to the doctor than the X-ray source (on the opposite side of the stand from the X-ray source). If the arm were lengthened to allow a monitor to be placed closer to the doctor than the X-ray source, the weight of the arm would increase. Therefore, it is necessary to increase the rigidity of the arm itself, as well as the rigidity of the joint that supports the arm in a cantilevered manner and the top plate of the stand. Furthermore, the arm and the arm joint themselves must be made thicker and more robust. This makes it difficult to create an arm that is compact and can be moved with little force. Furthermore, in order to increase the rigidity of the top plate of the stand housing on which the arm is pivotally supported, it becomes necessary to place a reinforcing member inside the stand housing, which also affects the internal space of the stand.

[0006] An object of the present invention is to provide an arm structure that allows a monitor to be placed on the opposite side of the stand from an X-ray generator, is lightweight, and does not affect the internal structure of the stand. [Means for solving the problem]

[0007] To achieve the above object, the present invention provides a medical imaging system comprising a stand, a tabletop on which a subject is placed, an X-ray generator, a support column for positioning the X-ray generator opposite the tabletop, a support frame for supporting the tabletop and the support column relative to the stand, and a monitor arm for supporting a monitor relative to the stand. The monitor arm includes an arm, an arm support column for supporting the arm, an arm base for supporting the lower end of the arm support column, and a slide rail for slidably supporting the arm base relative to the stand. The slide rail includes an upper rail fixed to the upper surface of the stand and a rear rail fixed to the upper part of the rear surface of the stand, both of which are parallel to the longitudinal direction of the tabletop when the main plane is positioned horizontally. The arm base includes a connected upper base and a rear base. The upper base slidably engages with the upper rail, and the rear base slidably engages with the rear rail. The lower end of the arm support column is mounted on the upper base. The arm includes a horizontal bar whose longitudinal direction is parallel to the horizontal direction and a vertical bar whose longitudinal direction is parallel to the vertical direction. The upper end of the vertical bar is fixed to one end of the horizontal bar, and the other end of the horizontal bar is connected to the arm support. The horizontal bar can rotate about the central axis of the arm support. A monitor holder for holding a monitor is attached to the lower end of the vertical bar. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide an X-ray fluoroscopy device equipped with a monitor arm that allows the monitor to be placed on the opposite side of the stand from the X-ray generator, and that is lightweight and does not affect the internal structure of the stand. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of an X-ray fluoroscopic apparatus according to a first embodiment of the present invention. [Figure 2] 1 is a perspective view of an X-ray fluoroscopic imaging apparatus according to a first embodiment. [Figure 3] 1(a) to 1(c) are top views of the X-ray fluoroscopic imaging apparatus of the first embodiment. [Figure 4]Cross-sectional view of the arm support portion 52 and the arm base portion 53 of the fluoroscopic X-ray imaging apparatus according to Embodiment 1. [Figure 5] (a) Rear view of the monitor 33 of the fluoroscopic X-ray imaging apparatus according to Embodiment 1, (b) Front view of the monitor 33. [Figure 6] (a-1) and (b-1) Top view and front view of the fluoroscopic X-ray imaging apparatus with the monitor arm of Embodiment 1 extended outside the stand and accommodated, (a-2) and (b-2) Top view and front view of the fluoroscopic X-ray imaging apparatus with the monitor arm of Embodiment 1 accommodated in the upper part of the stand. [Figure 7] Perspective view of the fluoroscopic X-ray imaging apparatus according to Embodiment 2 of the present invention. [Figure 8] Front view of the monitor 33 of the fluoroscopic X-ray imaging apparatus according to Embodiment 2.

Mode for Carrying Out the Invention

[0010] Hereinafter, the fluoroscopic X-ray imaging apparatus according to an embodiment of the present invention will be described with reference to the drawings.

[0011] <<Embodiment 1>> The fluoroscopic X-ray imaging apparatus according to Embodiment 1 will be described.

[0012] FIG. 1 and FIG. 2 are perspective views of the fluoroscopic X-ray imaging apparatus 1 according to Embodiment 1. FIGS. 3(a) to (c) are top views of the fluoroscopic X-ray imaging apparatus 1.

[0013] <Overall Configuration of Fluoroscopic X-ray Imaging Apparatus> As shown in FIG. 1, the fluoroscopic X-ray imaging apparatus 1 according to Embodiment 1 includes a top plate 10 on which a subject is placed, a stand 20, and an X-ray generator 30. The top plate 10 is mounted on a support frame 11. The lower end of a support column portion 40 is supported on a long-side surface of the support frame 11. The support column portion 40 supports the X-ray generator 30 so as to face the upper surface of the top plate 10. Further, the support column portion 40 includes a mechanism portion that is movable along the long-side surface of the support frame 11.

[0014] Furthermore, a support arm 60 is connected to the side of the support frame 11, and the support arm 60 is supported by the stand 20 so that it can move up and down and rotate. This allows the support frame 11 to move up and down and raise and lower while maintaining the positional relationship in which the X-ray generator 30 and the top board 10 face each other.

[0015] A collimator 31 that limits the irradiation range of the generated X-rays is attached to the X-ray generator 30. An X-ray detector 32 is disposed within the support frame 11 at a position facing the X-ray generator 30. The X-ray detector 32 is provided with an X-ray detector moving mechanism that moves the X-ray detector 32 in the long-side direction of the support frame 11. The X-ray detector moving mechanism moves the X-ray detector 32 as the support column 40 moves in the long-side direction of the support frame 11. Note that the support column 40 and the X-ray detector 32 may be provided with a lateral direction moving mechanism so that they move in sync in the lateral direction of the support frame 11. Alternatively, the support column 40 and the X-ray detector 32 may be configured not to move in the lateral direction of the support frame 11, and a mechanism that moves the tabletop 10 in the lateral direction of the support frame 11 may be provided. A footstool 13 is attached to the short side of the tabletop 10 to support the feet of the subject when the support frame 11 moves up and down and the subject assumes a standing position.

[0016] The stand 20 has a substantially rectangular parallelepiped shape, and a monitor arm 50 is attached to the top surface of the stand 20.

[0017] A drive unit 64 is connected to the mechanism that moves the support arm 60 up and down and rotates it inside the stand 20, and drives the mechanism, thereby moving the support frame 11 up and down and raising and lowering it to the desired height and angle.

[0018] A control unit 63 is connected to the mechanism of the support column 40, the mechanism of the support arm 60, and the X-ray generator 30. An operation unit 65 is connected to the control unit 63. The operation unit 65 receives input of imaging conditions and instructions to start imaging from the operator. When imaging conditions are specified, the control unit 63 controls the mechanism that moves the support arm 60 up and down and rotates it in the stand 20, and positions the support frame 11 at a position and angle that satisfies the imaging conditions. The control unit 63 also moves the support column 40 to a position that satisfies the imaging conditions, and positions the X-ray generator 30 at a predetermined position. The X-ray detector 32 moves in conjunction with the movement of the support column 40. The control unit 63 supplies a tube current and tube voltage corresponding to the imaging conditions received by the operation unit 65 to the X-ray tube built into the X-ray generator 30, generating X-rays.

[0019] The generated X-rays pass through the subject placed on the tabletop 10 and are detected by the X-ray detector 32 .

[0020] An image processing unit 61 is connected to the X-ray detector 32. The image processing unit 61 generates an X-ray image using the output of the X-ray detector 32. The generated X-ray image is stored in the storage unit 62 and displayed on the monitor 33. This makes it possible to perform X-ray fluoroscopy, in which X-rays are repeatedly irradiated in pulses at a predetermined frame rate and the obtained X-ray image is displayed as a moving image on the monitor 33. It is also possible to perform X-ray photography by irradiating X-rays once and display an X-ray image (still image) on the monitor 33. Furthermore, in addition to the monitor 33, it is also possible to place a separate monitor in the operation room, or to mount a separate monitor on a cart that can be moved around the examination room.

[0021] The monitor 33 may also display an image taken by an endoscope inserted into the subject.

[0022] <Monitor arm> The monitor arm 50 is configured to include an arm portion 51, an arm support portion 52 that supports the arm portion 51, an arm base portion 53 that supports the lower end of the arm support portion 52, and a slide rail portion 54 that supports the arm base portion 53 so that it can slide relative to the stand 20.

[0023] 2, the slide rail section 54 includes an upper rail 54a fixed to the upper surface of the stand 20 and a rear rail 54b fixed to the rear surface of the stand 20. The longitudinal directions of both the upper rail 54a and the rear rail 54b are parallel to the longitudinal direction of the tabletop 10 when the main plane is positioned horizontally.

[0024] The arm base portion 53 includes an upper base 53a and a rear base 53b that are connected together. In this embodiment, the upper base 53a and the rear base 53b are connected so as to be perpendicular to each other, forming the arm base portion 53 with an L-shaped side. The upper base 53a is slidably engaged with the upper rail 54a. The rear base 53b is slidably engaged with the rear rail 54b.

[0025] The lower end of the arm support part 52 is mounted on the upper surface base 53a.

[0026] The arm portion 51 includes a horizontal bar 51a whose longitudinal direction is arranged parallel to the horizontal direction, and a vertical bar 51b whose longitudinal direction is arranged parallel to the vertical direction. The upper end of the vertical bar 51b is fixed to one end of the horizontal bar 51a. In other words, there is no movable mechanism between the upper end of the vertical bar 51b and one end of the horizontal bar 51a, and both are fixed as an L-shaped member. The vertical bar 51b and the horizontal bar 51a may be fixed with screws or the like, or may be formed integrally.

[0027] The other end of the horizontal bar 51a is connected to the arm support section 52, and the horizontal bar 51a is rotatable about the central axis of the arm support section 52. In this case, the horizontal bar 51a may be rotatably connected to the upper end of the arm support section 52, and the lower end of the arm support section 52 may be fixed to the upper surface base 53a of the arm base section 53. Alternatively, the horizontal bar 51a and the arm support section 52 may be fixed, and the arm support section 52 may be rotatably connected to the upper surface base 53a.

[0028] A monitor holder 55 for holding the monitor 33 is connected to the lower end of the vertical bar 51b. The monitor holder 55 is preferably connected to the vertical bar 51b so as to be rotatable around the central axis of the vertical bar 51b.

[0029] 1, the horizontal bar 51a is supported by the arm support 52 at a position higher than the X-ray generator 30. The length of the horizontal bar 51a is designed to enable the vertical bar 51b to be placed in a position facing the stand with the X-ray generator 30 in between.

[0030] As shown in FIG. 1, the vertical bar 51b is designed to have a length such that the monitor 33 is supported at a position higher than the tabletop 10 and lower than the X-ray generator 30.

[0031] The arm unit 51 of this embodiment does not have a movable mechanism (joint) between the vertical bar 51b and the horizontal bar 51a. Therefore, the arm unit 51 has a simple structure, even though the vertical bar 51b and the horizontal bar 51a are perpendicular to each other. Therefore, even if the horizontal bar 51a is made long so that the monitor 33 can be supported at a position farther from the stand 20 than the X-ray generator 30, and the vertical bar 51b is designed long so that the monitor 33 can be supported at a position lower than the X-ray generator 30, a highly rigid and lightweight arm unit 51 can be designed. Furthermore, because there is no joint, the arm unit 51 is easy to manufacture.

[0032] The arm base section 53 having the above-described configuration can be moved by sliding along a slide rail section 54 provided on the upper surface of the stand 20 from one end of the slide rail section 54 to the opposite end, as shown in Figures 3(a), (b), and (c). At this time, the horizontal bar 51a of the arm section 51 can rotate around the central axis of the arm support section 52. By rotating the horizontal bar 51a to a desired angle as the arm base section 53 moves, the monitor 33 can be moved from one end to the other end in the longitudinal direction of the tabletop 10, as shown in Figures 3(a), (b), and (c).

[0033] Generally, the operator (doctor) stands facing the long side of the tabletop 10 as shown in Figure 3(a) with the monitor 33 positioned at the front left, or stands facing the short side of the tabletop 10 as shown in Figure 3(b) with the monitor 33 positioned at the front left, or stands facing the long side of the tabletop 10 as shown in Figure 3(c) with the monitor 33 positioned at the front right, and performs procedures on the subject on the tabletop while looking at the monitor 33.

[0034] The monitor arm 50 of this embodiment has no movable mechanism (joint) between the horizontal bar 51a and the vertical bar 51b, and is configured with only one movable mechanism (joint) that rotates the vertical bar 51b around the central axis of the arm support portion 52, yet can realize all three types of arrangements shown in Figures 3(a), (b), and (c).

[0035] Furthermore, the slide rail portion 54 of the monitor arm 50 of this embodiment is composed of two rails: an upper rail 54a and a rear rail 54b. The upper base 53a of the arm base portion 53, which is bent into an L-shape, is arranged horizontally. The upper base 53a engages with the upper rail 54a in a horizontal plane. Meanwhile, the rear base 53b is arranged vertically. The rear base 53b engages with the rear rail 54b in a vertical plane. Therefore, since the arm base portion 53 engages with the slide rail portion 54 in two orthogonal planes, the horizontal plane and the vertical plane, the combined weight of the monitor 33 and the arm portion 51 can be supported in two directions. As a result, the arm base portion 53 is precisely supported in both the horizontal and vertical directions by the slide rail portion 54. The arm support portion 52, which is mounted on the upper base of the arm base portion 53, is supported by the arm base portion 53 with its central axis oriented vertically. Therefore, the arm support portion 52 is less likely to tilt or bend.

[0036] As shown in FIG. 4 , the arm base unit 53 is also provided with a rail brake 58 that stops sliding relative to the slide rail unit 54. In the example of FIG. 4 , an electromagnetic brake is disposed as the rail brake 58 on the rear base 53b at a position facing the rear rail 54b. The electromagnetic brake incorporates an electromagnet and a mechanism that moves the electromagnet closer to the rear rail 54b. At least a portion of the rear rail 54b is made of a magnetic material such as iron. When the rail brake 58 is turned on, a current is supplied to the electromagnet via wiring (not shown), causing the electromagnet to move closer to the rear rail 54b and attract the rear rail 54b. This causes the electromagnet to stop sliding of the arm base unit 53.

[0037] The arm support section 52 is also provided with an arm brake 56 that stops the rotation of the horizontal bar 51a about the central axis of the arm support section 52. For example, as shown in FIG. 4, the arm support section 52 is fixed to the arm base section 53. When the horizontal bar 51a is rotatably connected to the upper end of the arm support section 52, the arm brake 56 is disposed at the upper end of the arm support section 52. Similar to the rail brake 58, the arm brake 56 incorporates an electromagnet and a mechanism that moves the electromagnet closer to the horizontal bar 51a. At least the connection portion of the horizontal bar 51a with the arm support section 52 is formed of a magnetic material such as iron. When the arm brake 56 is turned on, a current is supplied to the electromagnet via wiring (not shown). This causes the electromagnet to move closer to the horizontal bar 51a, attracting it and stopping the rotation of the horizontal bar 51a.

[0038] Furthermore, as shown in FIG. 5(a), the vertical bar 51b is provided with a monitor brake 57 that stops the rotation of the monitor holder 55. The monitor brake 57 has a similar configuration to the arm brake 56. The monitor brake 57 incorporates an electromagnet and a mechanism that moves the electromagnet closer to the monitor holder 55. When the monitor brake 57 is turned on, a current is supplied to the electromagnet via wiring (not shown). The electromagnet moves closer to the monitor holder 55, attracts the monitor holder 55, and stops the rotation of the monitor holder 55.

[0039] 5(a) and 5(b), the monitor holder 55 is provided with a handle 34 located below the monitor 33. A brake operation switch 35 is provided on the handle.

[0040] The brake operation switch 35 operates the monitor brake 57 and the arm brake 56 in conjunction with each other. The brake operation switch 35 also operates the rail brake 58 exclusively with respect to the monitor brake 57 and the arm brake 56.

[0041] That is, when the brake operation switch 35 is off, the monitor brake 57 and the arm brake 56 are both off, and the rail brake 58 is on. Therefore, the arm base unit 53 is locked by the rail brake 58 and cannot slide. The operator can rotate the monitor 33 and the arm unit 51 by changing the direction of the handle 34 or by pushing or pulling it. This allows the operator to orient the monitor 33 in a desired direction or adjust the distance between the monitor 33 and the stand 20. Therefore, the operator can position the monitor 33 at a position that is easy for the operator to see, and can perform a procedure on the subject while looking at the monitor 33.

[0042] On the other hand, when the brake operation switch 35 is turned on, the monitor brake 57 and the arm brake 56 are turned on, and the rail brake 58 is turned off. Therefore, the rotation of the monitor 33 and the arm unit 51 is locked. The operator can slide the arm base unit 53 along the slide rail unit 54 by pushing or pulling the handle 34 in the longitudinal direction of the slide rail unit 54. This allows the operator to change the position of the arm base unit 53 as shown in Figures 3(a), (b), and (c), thereby significantly changing the placement of the monitor 33. Then, when the brake operation switch 35 is turned off, the operator can rotate the monitor 33 and the arm unit 51 by changing the orientation or pushing or pulling the handle 34, thereby orienting the monitor 33 in the desired direction. This allows the operator to position the monitor 33 in any of the positions shown in Figures 3(a), (b), and (c). Therefore, the operator can position the monitor 33 in a position that is easy to see according to his or her standing position, and perform a procedure on the subject while looking at the monitor 33.

[0043] When storing the arm, the operator turns on the brake operation switch 35 and positions the arm base portion 53 at the end of the slide rail portion 54 as shown in FIGS. 6(a-1), (a-2), (b-1), and (b-2). Thereafter, the operator turns off the brake operation switch 35 and rotates the monitor 33 and the arm portion 51, respectively, and positions the horizontal bar 51a and the monitor 33 parallel to the slide rail portion 54. This allows the arm portion 51 and the monitor 33 to be positioned behind (toward the stand 20) the support column 40 of the X-ray generator 30 and the support frame 11 of the tabletop 10, as shown in FIGS. 6(a-1), (a-2) or 6(b-1), and (b-2). In the example of Figures 6(a-1) and (a-2), the arm portion 51 and monitor 33 can be positioned behind (towards the stand 20) the support column 40 of the X-ray generator 30 and the support frame 11 of the tabletop 10, but because the arm portion 51 extends significantly to the side of the stand 20, it is preferable to position the horizontal bar 51a at the top of the stand 20, as in Figures 6(b-1) and (b-2), as this allows the monitor arm 50 to be stored compactly.

[0044] As described above, when the monitor arm 50 of the first embodiment is in use, the monitor 33 can be placed on the opposite side of the stand 20 across the X-ray generator 30, as shown in Figure 3(b). Also, as shown in Figures 3(a) and 3(c), the monitor 33 can be placed diagonally forward to the left or right of an operator standing facing the long side of the tabletop.

[0045] Moreover, because arm portion 51a has a simple configuration with no moving parts (joints) at the connection between horizontal bar 51a and vertical bar 51b, arm portion 51a itself can be made lightweight even if horizontal bar 51a is made long. Therefore, horizontal bar 51a can be designed to be long while maintaining the rigidity of arm portion 51a, and the range in which monitor 33 can be placed can be expanded. Moreover, because there are no moving parts (joints), there is no rattle, and monitor 33 can be moved smoothly.

[0046] Furthermore, by arranging the slide rails 54 on the top and back of the stand 20, the arm 51a can be supported without affecting the internal structure of the stand 20, and can also be slid smoothly.

[0047] In the first embodiment, the slide rail unit 54 is configured to include the top rail 54a and the back rail 54b, but it is also possible to have only the top rail 54a. Also, it is possible to arrange both rails on the top surface of the stand 20.

[0048] 1, 2, 3, and 6, the length of the slide rail portion 54 is designed to be longer than the width of the stand 20 to ensure a long movable range for the arm base portion 53, but the present invention is not limited to this structure. The length of the slide rail portion 54 may be designed according to the required movable range of the monitor 33.

[0049] In the first embodiment, electromagnetic brakes are used for the arm brake 56, the monitor brake 57, and the rail brake 58, but brake structures other than electromagnetic brakes can also be used. For example, air brakes or the like can also be used.

[0050] <<Embodiment 2>> An X-ray fluoroscopic imaging apparatus according to a second embodiment will be described.

[0051] In the monitor arm 50 of the X-ray fluoroscopy apparatus of the first embodiment, the operator manually pushes and pulls the handle 34 to slide the arm base portion 53. In the monitor arm 50 of the second embodiment, the stand 20 is provided with a drive rail 154, and the arm base portion 53 is electrically slid.

[0052] 7, the drive rail 154 includes a pair of pulleys 154a, 154b arranged on both ends of the upper surface of the stand 20, a chain 154c wound between the pulleys 154a, 154b, and a motor that rotates and drives at least one of the pulleys 154a, 154b (for example, 154a). Although not shown, the motor can be arranged, for example, coaxially with the pulley 154a, between the upper surface of the stand 20 and the pulley 154a. A portion of the chain 154c is connected to a portion of the arm base portion 53.

[0053] As a result, a motor (not shown) rotates the pulley 154a, causing the chain 154c to rotate. As the chain 154c rotates, the arm base portion 53 moves in one direction (direction A in FIG. 7) along the slide rail portion 54. On the other hand, the motor rotates the pulley 154a in the reverse direction, causing the chain 154c to rotate in the reverse direction. As the chain 154c rotates in the reverse direction, the arm base portion 53 moves in the reverse direction (opposite to A) along the slide rail portion 54.

[0054] In the second embodiment, as shown in FIG. 8, the handle 34 is provided with a motor rotation direction changeover switch 135 in addition to the brake operation switch 35.

[0055] The operation of the brake operation switch 35 is the same as in the first embodiment. When the brake operation switch 35 is off, the monitor brake 57 and arm brake 56 are both off, and the rail brake 58 is on. In this state, the arm base portion 53 is locked by the rail brake 58 and cannot slide. The operator can rotate the monitor 33 and the arm portion 51 by changing the direction of the handle 34 or by pushing or pulling it.

[0056] On the other hand, when the brake operation switch 35 is on, the monitor brake 57 and the arm brake 56 are both on and the rail brake 58 is off. In this state, the monitor 33 and the arm unit 51 are locked. The arm base unit 53 moves in one direction (direction A) or the opposite direction (the opposite direction to A) depending on the direction of motor rotation determined by the state of the motor rotation direction selector switch 135. For example, when the motor rotation direction selector switch 135 is on, it moves in one direction (direction A), and when the motor rotation direction selector switch 135 is off, it moves in the opposite direction (the opposite direction to A).

[0057] In this way, according to the configuration of the second embodiment, the arm base portion 53 can be moved electrically, thereby reducing the burden on the operator.

[0058] The other configurations and effects are the same as those of the first embodiment, so the explanation will be omitted.

[0059] In the monitor arm 50 of the second embodiment, a motor may be provided to rotate the horizontal bar 51a around the central axis of the arm support portion 52, or a motor may be provided to rotate the monitor holder 55 around the central axis of the vertical bar 51b. This allows for a structure in which the horizontal bar 51a and the monitor 33 are rotated electrically. [Explanation of symbols]

[0060] 1 X-ray fluoroscopy device 10. Top plate 11 Support frame 13 Stepping Stone 20 Stand 31 Collimator 32 X-ray detector 33 Monitor 34 Handle 35 Brake operation switch 40 Support section 50 Monitor Arm 51 Arm section 51a horizontal bar 51b vertical bar 52 Arm support 53 Arm base 53a Upper base 53b rear base 54 Slide rail part 54a Top rail 54b rear rail 55 Monitor holder 56 Arm brake 57 Monitor Brake 58 Rail brake 60 Support Arm 61 Image processing section 62 Storage section 63 Control Unit 64 Drive unit 135 Motor rotation direction switch 154 Drive Rail 154a, 154b pulleys 154c chain

Claims

1. the apparatus comprises a stand, a top plate on which a subject is placed, an X-ray generator, a support column for placing the X-ray generator at a position opposite the top plate, a support frame for supporting the top plate and the support column relative to the stand, and a monitor arm for supporting a monitor relative to the stand; the monitor arm includes an arm portion, an arm support portion that supports the arm portion, an arm base portion that supports a lower end of the arm support portion, and a slide rail portion that supports the arm base portion slidably relative to the stand; the slide rail unit includes an upper rail fixed to an upper surface of the stand and a rear rail fixed to an upper portion of a rear surface of the stand, and both the upper rail and the rear rail are parallel to the longitudinal direction of the tabletop when the main plane is horizontally disposed; the arm base portion includes an upper base and a rear base that are connected to each other, the upper base slidably engages with the upper rail, the rear base slidably engages with the rear rail, and a lower end of the arm support portion is mounted on the upper base; The arm portion includes a horizontal bar whose longitudinal direction is arranged parallel to the horizontal direction and a vertical bar whose longitudinal direction is arranged parallel to the vertical direction, an upper end of the vertical bar is fixed to one end of the horizontal bar, and the other end of the horizontal bar is connected to the arm support section, and the horizontal bar is rotatable about a central axis of the arm support section; The X-ray fluoroscopic apparatus is characterized in that a monitor holder for holding the monitor is attached to the lower end of the vertical bar.

2. 2. The X-ray fluoroscopic imaging apparatus according to claim 1, the horizontal bar is supported by the arm support at a position higher than the X-ray generator; 10. An X-ray fluoroscopic imaging apparatus, wherein the horizontal bar has a length that enables the vertical bar to be disposed in a position opposite the stand with the X-ray generator interposed therebetween.

3. 2. The X-ray fluoroscopic imaging apparatus according to claim 1, The vertical bar is designed to have a length that supports the monitor at a position higher than the tabletop and lower than the X-ray generator.

4. 2. The X-ray fluoroscopic imaging apparatus according to claim 1, the arm support portion is fixed to the arm base portion, The other end of the horizontal bar is rotatably connected to the arm support portion.

5. 2. The X-ray fluoroscopic imaging apparatus according to claim 1, The X-ray fluoroscopic apparatus is characterized in that the monitor holder is rotatably attached to the lower end of the vertical bar.

6. 2. The X-ray fluoroscopic imaging apparatus according to claim 1, the arm base portion is provided with a rail brake that stops sliding relative to the slide rail portion, An X-ray fluoroscopic imaging apparatus, wherein the arm support portion is provided with an arm brake that stops rotation of the horizontal bar about a central axis of the arm support portion.

7. 7. The X-ray fluoroscopic imaging apparatus according to claim 6, further comprising a brake operating unit, The X-ray fluoroscopic imaging apparatus is characterized in that the brake operating unit exclusively operates the rail brake and the arm brake.

8. 8. The X-ray fluoroscopic imaging apparatus according to claim 7, wherein the vertical bar is provided with a monitor brake for stopping rotation of the monitor holder, The brake operating unit operates the monitor brake in conjunction with the arm brake. An X-ray fluoroscopic imaging device.

9. 8. The X-ray fluoroscopic imaging apparatus according to claim 7, wherein the monitor holder is provided with a handle positioned below the monitor, The brake operation unit is a switch provided on the handlebar. An X-ray fluoroscopic imaging device.

10. 2. The X-ray fluoroscopy apparatus according to claim 1, wherein the upper base and the rear base of the arm base portion are connected so that their main planes are perpendicular to each other, and the side shape of the arm base portion is L-shaped.

Images