X-ray imaging device

Abstract

The present invention relates to an X-ray imaging device, comprising: an X-ray source; a detector; a C-arm; a hose that accommodates wiring and includes a root-side portion and an opposite-side portion; a base that includes a C-arm support portion and a hose mounting portion that rotatably mounts the root-side portion of the hose; a force applying portion that applies a force to rotate the root-side portion of the hose in a first rotational direction that separates toward the outside of the C-arm, with the hose mounting portion as the center; and an image processing portion.

Description

Technical Field

[0001] The present invention relates to an X-ray imaging device, and more particularly to an X-ray imaging device including a hose for accommodating wiring connected to at least one of an X-ray source and a detector. Background Art

[0002] Conventionally, there is known an X-ray imaging device including a hose that houses wiring connecting an X-ray source and a detector. Such a device is disclosed in, for example, Japanese Patent Application Laid-Open No. 2008-86372.

[0003] Japanese Patent Application Publication No. 2008-86372 discloses an X-ray imaging device equipped with a hose that accommodates multiple cables (wiring), including a high-voltage cable for supplying high voltage to the X-ray source and a signal cable for acquiring signals detected by the detector. Japanese Patent Application Publication No. 2008-86372 discloses an X-ray imaging device comprising a C-arm that supports the X-ray source and detector, a second support portion (C-arm support portion) that rotatably supports the C-arm, cables that extend between the C-arm and the second support portion, and a hose that accommodates the cables and is secured to the C-arm at one end and the second support portion at the other. The second support portion is configured to support the middle portion of the C-arm from both sides and reciprocate along the C-arm's arc. Specifically, the C-arm slides circumferentially relative to the second support portion. The hose that accommodates the cables has a downwardly drooping portion. One end of the hose is secured to the C-arm, and the other end is secured to the second support portion.

[0004] Although not disclosed in the aforementioned Japanese Patent Application Laid-Open No. 2008-86372, the position of one end of the hose fixed to the C-arm changes as the C-arm moves in the circumferential direction. Therefore, the change in position of one end of the hose accompanying at least the circumferential movement of the C-arm may sometimes cause the hose to approach a subject placed on the top plate. In this case, there is a possibility that the hose and the subject may come into contact. Therefore, it is desirable to prevent the hose from coming into contact with the subject placed on the top plate as the C-arm moves in at least the circumferential direction. Summary of the Invention

[0005] The present invention has been made to solve the above-mentioned problems, and one object of the present invention is to provide an X-ray imaging device that can suppress contact between a hose and a subject placed on a top plate as a C-arm moves at least in the circumferential direction.

[0006] To achieve the above-mentioned object, an X-ray imaging apparatus according to one embodiment of the present invention includes: an X-ray source; a detector for detecting X-rays emitted from the X-ray source; a C-arm supporting the X-ray source and the detector; a hose for accommodating wiring connected to at least one of the X-ray source and the detector, the hose comprising a base portion and an opposite-side portion connected to the C-arm on a side opposite to the base portion; a base comprising a C-arm support portion for rotatably supporting the C-arm and a hose mounting portion for rotatably mounting the base portion of the hose; a biasing portion for biasing the base portion of the hose to rotate in a first rotational direction extending outward from the C-arm about the hose mounting portion; and an image processing unit for generating an image based on detection signals output from the detector. Here, the term "C-arm" refers to an arm having a side profile substantially shaped like the letter C and supporting the X-ray source at one end and the detector at the other end.

[0007] As described above, an X-ray imaging apparatus according to one embodiment of the present invention includes a hose including a base portion, a hose mounting portion that rotatably mounts the base portion of the hose, and a force-applying portion that applies force to rotate the base portion of the hose in a first rotational direction away from the C-arm, centered about the hose mounting portion. Consequently, even if the position of the opposite side portion of the hose connected to the C-arm, opposite to the base portion, changes with at least circumferential movement of the C-arm, the base portion of the hose is biased by the force-applying portion to rotate in the first rotational direction away from the outside of the C-arm. This prevents the distance between the hose and a subject placed on a top plate from decreasing. Consequently, contact between the hose and the subject placed on the top plate with at least circumferential movement of the C-arm can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram showing the configuration of the X-ray imaging apparatus according to the first embodiment.

[0009] Figure 2 This is a diagram showing an example of the position of the C-arm and the state of the hose.

[0010] Figure 3 It is a partial perspective view of the X-ray imaging device according to the first embodiment.

[0011] Figure 4 It is a partial side view of the X-ray imaging device according to the first embodiment.

[0012] Figure 5 This is a side view of the hose mounting section.

[0013] Figure 6 It is along Figure 5Schematic cross-sectional view of line 500-500.

[0014] Figure 7 This is a diagram showing another example of the position of the C-arm and the state of the hose.

[0015] Figure 8 is a comparative example Figure 7 The diagram shows the state of the hose under the position of the C-arm.

[0016] Figure 9 It is a schematic diagram showing the configuration of an X-ray imaging apparatus according to a second embodiment.

[0017] Figure 10 This is a schematic diagram showing an example of a floor-standing X-ray imaging unit according to the second embodiment.

[0018] Figure 11 This is a schematic diagram showing a ceiling-mounted X-ray imaging unit according to the second embodiment.

[0019] Figure 12 It is a partial side view of the X-ray imaging device according to the second embodiment.

[0020] Figure 13 This is Example 1 of a partial perspective view of the X-ray imaging device according to the second embodiment.

[0021] Figure 14 This is Example 2 of a partial perspective view of the X-ray imaging device according to the second embodiment.

[0022] Figure 15 This is a diagram showing another example of the position of the ceiling-mounted C-arm and the state of the second hose. DETAILED DESCRIPTION

[0023] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0024] [First embodiment]

[0025] (Structure of X-ray Imaging Device)

[0026] Reference Figures 1 to 7 The configuration of the X-ray imaging apparatus 100 according to the first embodiment will be described.

[0027] like Figure 1 As shown, the X-ray imaging device 100 is a device for capturing X-ray images of a subject S. The X-ray imaging device 100 of the first embodiment can be used for medical purposes. In this case, the subject S is a living body to be examined.

[0028] like Figure 1As shown, the X-ray imaging device 100 includes an X-ray source 11, a detector 12, a C-arm 13, a hose 20, a shape retaining member 50 (see Figure 3 ), base 30 and image processing unit 42. The base 30 includes a C-arm support unit 31, a hose mounting unit 60, a force applying unit 33 (see Figure 4 ), cover 34, first C-arm driving mechanism 35, second C-arm driving mechanism 36 and base moving mechanism 37.

[0029] The X-ray source 11 is configured to generate X-rays when a high voltage is applied thereto, and is configured to irradiate the generated X-rays toward the detector 12 .

[0030] The detector 12 is configured to detect X-rays emitted from the X-ray source 11. The detector 12 is configured to convert the detected X-rays into electrical signals. As a result, an X-ray image reflecting the transmission of X-rays through the subject S can be obtained. The detector 12 is, for example, an FPD (Flat Panel Detector). The detector 12 is composed of a plurality of conversion elements (not shown) and pixel electrodes (not shown) arranged on the plurality of conversion elements. The plurality of conversion elements and pixel electrodes are arranged in rows and columns within the detection surface at a predetermined period (pixel pitch). The detection signal (image signal) of the detector 12 is transmitted to the image processing unit 42.

[0031] The C-arm 13 has an arcuate shape. It supports the X-ray source 11 at one end and the detector 12 at the other end. The C-arm 13 is supported by a C-arm support 31 so that it can rotate in the circumferential direction (direction of arrow A) of the C-arm 13. Furthermore, the C-arm support 31 supports the C-arm 13 so that it can rotate about a rotation axis 90.

[0032] The hose 20 accommodates the wiring 80 connected to at least one of the X-ray source 11 and the detector 12. Figure 2 As shown, the hose 20 includes a root side portion 21 and an opposite side portion 22 on the side opposite to the root side portion 21. One end portion of the root side portion 21 of the hose 20 is mounted on a hose mounting portion 60 provided on the base 30. One end portion of the root side portion 21 of the hose 20 is retained by being fitted into the hose mounting portion 60 (see FIG. Figure 6 One end of the opposite side portion 22 of the hose 20 is connected to the C-arm 13. The root side portion 21 of the hose 20 and the opposite side portion 22 of the hose 20 are a portion of the single hose 20 and other portions other than the portion. The hose 20 may include portions other than these portions between the root side portion 21 of the hose 20 and the opposite side portion 22 of the hose 20. The hose 20 is formed of, for example, resin.

[0033] The root portion 21 of the hose 20 is configured to be less susceptible to deformation than the opposite-side portion 22 of the hose 20. The root portion 21 of the hose 20 extends from the root of the hose 20, where it is mounted on the hose mounting portion 60, to a predetermined position. This portion maintains its shape by contact with the shape-maintaining member 50 that extends through the interior of the hose 20. The opposite-side portion 22 of the hose 20 extends from a predetermined position to the connection portion 25 connected to the C-arm 13. The opposite-side portion 22 of the hose 20 is configured to be freely deformable.

[0034] like Figure 3 As shown, the root side portion 21 of the hose 20 includes a first portion 23 and a second portion 24. Figure 3 For ease of explanation, the hose 20 is illustrated with dashed lines, and the wiring 80 is omitted. The first portion 23 is formed to extend from the hose mounting portion 60 along the central axis 61 of the hose mounting portion 60. The second portion 24 is located on the side opposite the hose mounting portion 60 relative to the first portion 23 and extends obliquely with respect to the central axis 61 of the hose mounting portion 60. The root portion 21 of the hose 20 is maintained in shape by a shape-retaining member 50.

[0035] The shape-retaining member 50 is configured to penetrate the base portion 21 of the hose 20, thereby maintaining the shape of the base portion 21. The base of the shape-retaining member 50 is connected to the hose mounting portion 60, and its front end extends to a predetermined position on the hose 20. Specifically, the shape-retaining member 50 extends from the base of the hose 20, where it is mounted on the hose mounting portion 60, to the predetermined position. The shape-retaining member 50 extends from the hose mounting portion 60 along the central axis 61 of the hose mounting portion 60, with its front end extending obliquely relative to the central axis 61 of the hose mounting portion 60. The shape-retaining member 50 is formed from a metal rod-shaped member. A retainer 51 is provided at the front end of the shape-retaining member 50 for collecting and guiding the wiring 80.

[0036] like Figure 4 As shown, the shape-maintaining member 50 is configured such that the base portion of the shape-maintaining member 50 is rotated in the first rotational direction R1 by the biasing portion 33, thereby causing the distal end side to rotate in the first rotational direction R1 along with the base portion 21 of the hose 20. The rotation of the base portion 21 of the hose 20 in the first rotational direction R1 by the biasing portion 33 will be described later.

[0037] like Figure 1 As shown, the C-arm support portion 31 is provided on the C-arm side of the base 30. The C-arm support portion 31 supports the C-arm 13 by clamping it in a direction perpendicular to the circumferential direction (see FIG. Figure 2The C-arm support unit 31 supports the C-arm 13 rotatably along the circumferential direction (direction of arrow A) of the C-arm 13 using a first C-arm drive mechanism 35. Furthermore, the C-arm support unit 31 supports the C-arm 13 rotatably about the rotation axis 90 using a second C-arm drive mechanism 36.

[0038] like Figure 2 As shown, the hose mounting portion 60 is provided on the upper portion of the C-arm support portion 31. One end portion of the root side portion 21 of the hose 20 is rotatably mounted on the hose mounting portion 60. That is, the root portion of the hose 20 is rotatably mounted on the hose mounting portion 60. Figure 5 As shown, the hose mounting portion 60 includes an inner tube portion 62 and an outer tube portion 63 located on the outer peripheral side of the inner tube portion 62. The outer periphery of the hose mounting portion 60 is covered by a hose mounting portion cover (not shown). One end of the hose 20 is embedded and mounted between the inner tube portion 62 and the outer tube portion 63. The root of the shape retaining member 50 is connected to the inner tube portion 62 of the hose mounting portion 60. One end of the wire 33b of the force applying portion 33 is mounted on the wire connecting portion 64 on the outer peripheral surface of the outer tube portion 63 of the hose mounting portion 60. The inner tube portion 62 and the outer tube portion 63 are screwed together using screws 65. As shown in FIG. Figure 6 As shown, in the hose mounting portion 60, the outer cylindrical portion 63 of the hose mounting portion 60 is configured to be rotatable relative to the bearing 66 provided on the C-arm support portion 31. Thus, the hose mounting portion 60 including the inner cylindrical portion 62 and the outer cylindrical portion 63 is configured to be integral with the shape retaining member 50 and the root side portion 21 of the hose 20, and can be rotated relative to the C-arm support portion 31 around the central axis 61 (see FIG. Figure 3 )Rotate.

[0039] like Figure 4 As shown, the force applying portion 33 is provided on a side surface of the C-arm supporting portion 31 . Figure 4 For the sake of convenience, the cover 34 is omitted from the illustration. The urging portion 33 is configured to urge the root side portion 21 of the hose 20 to rotate about the central axis 61 of the hose mounting portion 60 (see FIG. Figure 3 ) rotates in the first rotation direction R1 away from the outside of the C-arm 13. The force applying portion 33 includes a tension spring 33a and a wire 33b connected to the tension spring 33a. One end of the wire 33b is connected to the wire connecting portion 64 of the outer tube portion 63 of the hose mounting portion 60 (see Figure 5 The other end of the wire 33b is connected to one end of the tension spring 33a. One end of the tension spring 33a is connected to the other end of the wire 33b. The other end of the tension spring 33a is connected to the C-arm support portion 31. The tension spring 33a is configured to apply force to rotate the hose mounting portion 60 via the wire 33b, thereby rotating the base portion 21 of the hose 20 in the first rotational direction R1.

[0040] like Figure 2 As shown, the force applying portion 33 is disposed between the C-arm support portion 31 and the hose 20. Thus, the force applying portion 33 is disposed so as to be surrounded by the C-arm support portion 31 and the hose 20 extending from the hose mounting portion 60. This prevents the force applying portion 33, including the cover 34, from coming into contact with the subject S placed on the top plate 14 or with a user near the X-ray imaging apparatus 100.

[0041] like Figure 3 As shown, the cover 34 is configured to cover the biasing portion 33. The cover 34 includes a tension spring cover 34a provided on the C-arm support portion 31 and covering the tension spring 33a, and a wire cover 34b covering the outer periphery of the wire 33b.

[0042] The tension spring 33a of the force applying portion 33 is provided on a side surface of the C-arm support portion 31 and extends along the side surface of the C-arm support portion 31. The wire 33b of the force applying portion 33 is exposed from the tension spring cover 34a at a short distance from the upper end of the tension spring cover 34a to the hose mounting portion 60 and extends along the side surface of the C-arm support portion 31. In addition, the portion of the wire 33b exposed from the tension spring cover 34a is covered by the wire cover 34b.

[0043] like Figure 1 As shown, the first C-arm driving mechanism 35 is configured to drive the C-arm 13. The first C-arm driving mechanism 35 is provided inside the C-arm support portion 31. The first C-arm driving mechanism 35 includes a motor and a driver.

[0044] The second C-arm driving mechanism 36 is configured to drive the C-arm support portion 31. The second C-arm driving mechanism 36 is provided inside the C-arm support portion 31. The second C-arm driving mechanism 36 is configured to include a motor and a driver.

[0045] The base moving mechanism 37 is configured to move the base 30 installed on the ground along the ground, and to move the C-arm 13 to a desired imaging position together with the base 30. The base moving mechanism 37 is provided inside the base 30. The base moving mechanism 37 includes a motor and a driver.

[0046] The image processing unit 42 is provided in the control device 40 . The control device 40 is constituted by, for example, a PC (Personal Computer). The control device 40 includes a control unit 41 , an image processing unit 42 , and a storage unit 43 .

[0047] The control unit 41 is composed of a processor such as a CPU (Central Processing Unit), and controls imaging of the X-ray imaging apparatus 100 by executing an application program stored in the storage unit 43. Furthermore, the control unit 41 controls the placement of the C-arm 13 and the base 30 at predetermined positions using the first C-arm driving mechanism 35, the second C-arm driving mechanism 36, and the base moving mechanism 37.

[0048] The image processing unit 42 generates an image based on the detection signal output from the detector 12. The image processing unit 42 is configured by a processor such as a GPU (Graphics Processing Unit) or an FPGA (Field-Programmable Gate Array) configured for image processing.

[0049] The storage unit 43 is configured to include a volatile storage device and a nonvolatile storage device. The storage unit 43 stores programs, etc. The storage unit 43 stores images generated by the image processing unit 42.

[0050] (Rotation of the base portion of the hose by the force-applying portion)

[0051] Reference Figure 4 The rotation of the base portion 21 of the hose 20 in the first rotation direction R1 by the urging portion 33 will be described. Figure 4 yes Figure 2 A partial side view of the vicinity of the force applying portion 33 in the state where the C-arm 13 is positioned and the hose 20 is connected.

[0052] exist Figure 4 In the state shown, a convex member (not shown) provided inside the C-arm support portion 31 and fixed and a rotatable abutting member (not shown) provided on the hose mounting portion 60 and abutted by the convex member are provided near the bearing 66 provided on the C-arm support portion 31. The convex member abuts against the abutting member to limit the self-rotation of the hose mounting portion 60 by the force applying portion 33. Figure 4 The state shown is when the hose 20 is further rotated in the first rotation direction R1. That is, the side of the base portion 21 of the hose 20 opposite to the hose mounting portion 60 is located at the outer limit position P, which is farther away from the hose mounting portion 60 and toward the outside of the C-arm 13.

[0053] Here, in Figure 2 The status shown is Figure 7 As shown in the state, the C-arm 13 is moved in the circumferential direction ( Figure 1 In the case of moving in the A1 direction, Figure 7As shown, the connection portion 25 of the opposite side portion 22 of the hose 20, which is connected to the C-arm 13, moves along the circumference of the C-arm 13 from the head toward the feet of the subject S. This movement of the connection portion 25 of the hose 20 in the direction A1 also generates a force pulling the base portion 21 of the hose 20 inward of the C-arm 13. However, while a force tends to rotate the base portion 21 of the hose 20 in the second rotational direction R2, which is opposite to the first rotational direction R1, is generated, the tension spring 33a also applies a force that rotates the base portion 21 of the hose 20 in the first rotational direction R1, which is away from the outside of the C-arm 13. Therefore, rotation of the base portion 21 of the hose 20 in the second rotational direction R2, which is opposite to the first rotational direction R1, caused by the opposite side movement of the hose 20 inward of the C-arm 13, is suppressed.

[0054] In contrast, due to Figure 8 The X-ray imaging device 200 of the comparative example shown lacks a force applying portion 33, and therefore does not apply a force to rotate the base portion of the hose H in the first rotational direction R1, which would separate it from the outside of the C-arm 13. Furthermore, because the hose H is relatively flexible and lacks a shape-maintaining member 50, the shape of the base portion of the hose H cannot be maintained. Consequently, rotation of the base portion of the hose H in the second rotational direction R2, which is opposite to the first rotational direction R1, caused by movement of the opposite side of the hose H toward the inside of the C-arm 13, cannot be suppressed. Consequently, the force pulling the base portion of the hose H inward toward the C-arm 13 caused by movement of the opposite side of the hose H toward the inside of the C-arm 13 can cause the hose H to approach the subject S placed on the top plate 14. Consequently, there is a risk that the hose H could come into contact with the subject S.

[0055] Since the hose 20 is relatively soft, the middle portion of the hose 20 will naturally sag downward due to the action of gravity. If only the base of the hose 20 on the hose mounting side is rotated, only the hose 20 will be twisted. Figure 7 As shown, because the base portion 21 of the hose 20 in the first embodiment is configured to be less prone to deformation, a residual force acting toward a position separated from the subject S acts on a predetermined position corresponding to the distal end of the shape-maintaining member 50. As a result, when the connecting portion 25 of the hose 20 moves toward the subject S as the C-arm 13 moves circumferentially, the position of the portion 26 in the middle of the hose 20 that droops the most is separated from the subject S by a distance D compared to the position of the portion 27 that droops the most when the hose 20 is naturally drooping (illustrated by the two-dot chain line).

[0056] (Effects of the First Embodiment)

[0057] In the first embodiment, the following effects can be obtained.

[0058] In the first embodiment, as described above, the X-ray imaging apparatus 100 includes: an X-ray source 11; a detector 12 for detecting X-rays emitted from the X-ray source 11; a C-arm 13 for supporting the X-ray source 11 and the detector 12; a hose 20 for accommodating a wiring 80 connected to at least one of the X-ray source 11 and the detector 12, the hose 20 including a root portion 21 and an opposite-side portion 22 connected to the C-arm on a side opposite to the root portion 21; a base 30 including a C-arm support portion 31 for rotatably supporting the C-arm 13 and a hose mounting portion 60 for rotatably mounting the root portion 21 of the hose 20; a force applying portion 33 for applying a force to rotate the root portion 21 of the hose 20 in a first rotation direction R1 that extends outward from the C-arm 13 about the hose mounting portion 60; and an image processing unit 42 for generating an image based on a detection signal output from the detector 12. Thus, even if the position of the opposite-side portion 22 of the hose 20 connected to the C-arm 13 changes as the C-arm 13 moves at least in the circumferential direction, the base-side portion 21 of the hose 20 is biased by the biasing portion 33 to rotate in the first rotational direction R1 that separates toward the outside of the C-arm 13. This prevents the distance between the hose 20 and the subject S placed on the top plate 14 from decreasing. Consequently, it is possible to prevent the hose 20 from coming into contact with the subject S placed on the top plate 14 as the C-arm 13 moves at least in the circumferential direction.

[0059] Furthermore, in the first embodiment, as described above, the base portion 21 of the hose 20 extends from the hose mounting portion 60 along the central axis 61 of the hose mounting portion 60, and extends obliquely relative to the central axis 61 of the hose mounting portion 60 on the side opposite the hose mounting portion 60. The force applying portion 33 applies force to rotate the base portion 21 of the hose 20 about the central axis 61 of the hose mounting portion 60 in the first rotational direction R1. Thus, the force applying portion 33 applies force to rotate the base portion 21 of the hose 20 about the central axis 61 of the hose mounting portion 60 in the first rotational direction R1, thereby applying force to the side of the base portion 21 of the hose 20 opposite the hose mounting portion 60 so as to rotate in the first rotational direction R1, away from the outside of the C-arm 13. Consequently, the side of the base portion 21 of the hose 20 opposite the hose mounting portion 60 can be prevented from approaching the subject S placed on the top plate 14. Therefore, it is possible to further suppress the hose 20 from coming into contact with the subject S placed on the top plate 14 .

[0060] Furthermore, in the first embodiment, as described above, the side of the base portion 21 of the hose 20 opposite the hose mounting portion 60 is positioned at the outer limit position P, spaced further outward from the C-arm 13 than the hose mounting portion 60. The force applying portion 33 applies a force to suppress rotation of the base portion 21 of the hose 20 in the second rotational direction R2, which is opposite to the first rotational direction R1, as the opposite side of the hose 20 moves inward of the C-arm 13. Thus, the side of the base portion 21 of the hose 20 opposite the hose mounting portion 60 is positioned at the outer limit position P, allowing the opposite side portion 22 of the hose 20 to maintain a sufficient distance from the subject S placed on the top plate 14. Consequently, contact between the hose 20 and the subject S placed on the top plate 14 as the C-arm 13 moves at least in the circumferential direction can be more effectively suppressed.

[0061] Furthermore, in the first embodiment, as described above, the base portion 21 of the hose 20 is configured to be less likely to deform. Thus, even if the position of the opposite-side portion 22 of the hose 20 connected to the C-arm 13 changes as the C-arm 13 moves at least in the circumferential direction, the base portion 21 of the hose 20 is configured to be less likely to deform. Therefore, the distance between the hose 20 and the subject S placed on the top plate 14 can be prevented from decreasing due to the shape change of the base portion 21 of the hose 20.

[0062] Furthermore, as described above, the first embodiment further includes a shape-maintaining member 50. The base of the shape-maintaining member 50 is connected to the hose mounting portion 60. The shape-maintaining member 50 extends through the base portion 21 of the hose 20 to maintain the shape of the base portion 21 of the hose 20. The base portion of the shape-maintaining member 50 is rotated by the biasing portion 33, causing the distal end of the shape-maintaining member 50 to rotate in the first rotational direction R1 along with the base portion 21 of the hose 20. Thus, the shape-maintaining member 50 maintains its shape relative to the base portion 21 of the hose 20, thereby effectively preventing the hose 20 from being deformed relative to the base portion 21 of the hose 20. This effectively prevents the hose 20 from being reduced in distance from the subject S placed on the top plate 14 due to changes in the shape of the base portion 21 of the hose 20.

[0063] Furthermore, in the first embodiment, as described above, the shape-maintaining member 50 extends from the hose mounting portion 60 along the central axis 61 of the hose mounting portion 60, with its distal end extending obliquely relative to the central axis 61 of the hose mounting portion 60. Consequently, the biasing force of the biasing portion 33 biases the base portion of the shape-maintaining member 50 to rotate about the central axis 61 of the hose mounting portion 60 in the first rotational direction R1. This biases the base portion 21 of the hose 20, which is opposite the hose mounting portion 60, toward the outside of the C-arm 13, and reliably biases the base portion 21. This prevents the base portion 21 of the hose 20, which is opposite the hose mounting portion 60, from approaching the subject S placed on the top plate 14. Consequently, contact between the hose 20 and the subject S placed on the top plate 14 is prevented.

[0064] Furthermore, in the first embodiment, as described above, the shape-maintaining member 50 is formed of a metal rod-shaped member. Thus, even if the position of the opposite-side portion 22 of the hose 20 connected to the C-arm 13, which is opposite to the side where the root-side portion 21 is located, changes, the shape of the root-side portion 21 of the hose 20 can be reliably maintained by the non-deformable metal rod-shaped member.

[0065] Furthermore, in the first embodiment, as described above, the force applying portion 33 is provided on the base 30. Thus, even if the C-arm 13 moves in the circumferential direction, the positional relationship between the force applying portion 33 and the hose mounting portion 60 provided on the base 30 does not change. Therefore, the force applying portion 33 can apply force to rotate the root portion 21 of the hose 20 in the first rotational direction R1 about the central axis 61 of the hose mounting portion 60 without being affected by the circumferential movement of the C-arm 13.

[0066] Furthermore, as described above, the first embodiment further includes a cover 34 provided on the base 30 and covering the biasing portion 33. This effectively prevents the wire 33b and the tension spring 33a constituting the biasing portion 33 from directly contacting the subject S placed on the top plate 14.

[0067] Furthermore, in the first embodiment, as described above, the biasing portion 33 includes a tension spring 33a and a wire 33b having one end connected to the tension spring 33a and the other end connected to the hose mounting portion 60. Since the tension spring 33a can bias the base portion 21 of the hose 20 to rotate in the first rotational direction R1, and the wire 33b can be bent along the outer surface of the rotating hose mounting portion 60, unlike a case where the biasing portion 33 consists solely of the tension spring 33a, the wire 33b can be properly connected to the hose mounting portion 60.

[0068] Furthermore, in the first embodiment, as described above, the tension spring 33a applies force to rotate the hose attachment portion 60 via the wire 33b, thereby rotating the base portion 21 of the hose 20 in the first rotational direction R1. This ensures that the base portion 21 of the hose 20 is reliably rotated in the first rotational direction R1, thereby more effectively preventing the distance between the hose 20 and the subject S placed on the top plate 14 from decreasing due to shape changes in the base portion 21 of the hose 20.

[0069] Furthermore, in the first embodiment, the C-arm 13 is configured as a floor-mounted C-arm supported by a base 30 installed on the floor of the examination room, or as a ceiling-mounted C-arm supported by a base installed on the ceiling of the examination room. Consequently, even when the X-ray imaging apparatus 100 includes either a floor-mounted C-arm or a ceiling-mounted C-arm 13, contact between the hose 20 and the subject S placed on the top plate 14 can be suppressed as the C-arm 13 moves at least in the circumferential direction.

[0070] [Second embodiment]

[0071] (Structure of X-ray Imaging Device)

[0072] Next, refer to Figures 9 to 15 The structure of the X-ray imaging device 300 of the second embodiment will be described. In the second embodiment, unlike the single-plane type X-ray imaging device 100 having a floor-standing C-arm 13, that is, the first embodiment, Figure 9 As shown, the X-ray imaging apparatus 300 is a biplane type X-ray imaging apparatus 300 including both a floor-standing C-arm 13a and a ceiling-mounted C-arm 313. Components identical to those in the first embodiment are denoted by the same reference numerals and their descriptions are omitted.

[0073] like Figure 9 As shown, the X-ray imaging device 300 includes a floor-standing X-ray imaging unit 301, a ceiling-mounted X-ray imaging unit 302, and an image processing unit 342. Figure 10 As shown, the floor-standing X-ray imaging unit 301 includes the X-ray imaging device 100 of the first embodiment (see Figure 2) are the same first X-ray source 11a, first detector 12a, floor-standing C-arm 13a, first hose 20a, first shape-maintaining member 50a, first base 30a, and first force-applying unit 33. However, description of the first X-ray source 11a, first detector 12a, floor-standing C-arm 13a, first hose 20a, first shape-maintaining member 50a, first base 30a, and first force-applying unit 33c in the floor-standing X-ray imaging unit 301 is omitted.

[0074] The ceiling-mounted X-ray imaging unit 302 includes a second X-ray source 311, a second detector 312, a ceiling-mounted walking C-arm 313, a second hose 320, a second shape-maintaining member 350, a second base 330, and a second force-applying unit 333 (see FIG. Figure 11 ), the first stopper 361 (refer to Figure 13 ) and the second stopper 362 (see Figure 13 The second base 330 includes a ceiling-mounted walking C-arm support portion 331 and a second hose mounting portion 360 (see Figure 11 ), the second cover 334, the third C-arm driving mechanism 335, the fourth C-arm driving mechanism 336 and the second base moving mechanism 337. Since the second X-ray source 311 and the second detector 312 of the ceiling-mounted X-ray imaging unit 302 are respectively the same as the X-ray source 11 and the detector 12 of the first embodiment, their description is omitted. Figure 11 In the figure, the second cover 334 is omitted for convenience of explanation.

[0075] The ceiling walking C-arm 313 has an arc shape. The ceiling walking C-arm 313 supports the second X-ray source 311 at one end and the second detector 312 at the other end. The ceiling walking C-arm support portion 331 supports the ceiling walking C-arm 313 so as to be rotatable along the circumferential direction (direction of arrow B) of the ceiling walking C-arm 313. In addition, the ceiling walking C-arm support portion 331 supports the ceiling walking C-arm 313 so as to be rotatable around the axis of rotation 91. In addition, the ceiling walking C-arm support portion 331 supports the ceiling walking C-arm 313 so as to be rotatable in the direction along the rotation center line O ( Figure 9 The paper moves forward in the depth direction).

[0076] The second hose 320 houses a wiring (not shown) connected to at least one of the second X-ray source 311 and the second detector 312. The second hose 320 includes a root portion 321 and an opposite side portion 322 on the side opposite to the root portion 321. One end of the root portion 321 of the second hose 320 is mounted on a second hose mounting portion 360 (see FIG. 1 ) provided on the second base 330. Figure 12 ). The root side portion 321 of the second hose 320 is configured to include an end portion mounted on the second hose mounting portion 360. The other end portion of the opposite side portion 322 of the second hose 320 is connected to the ceiling-mounted walking C-arm 313. The opposite side portion 322 of the second hose 320 is configured to include an end portion connected to the ceiling-mounted walking C-arm 313. The root side portion 321 of the second hose 320 and the opposite side portion 322 of the second hose 320 are a portion and other portions other than a portion of a single hose. The second hose 320 may also include portions other than these portions between the root side portion 321 of the second hose 320 and the opposite side portion 322 of the second hose 320. The second hose 320 is formed of, for example, resin.

[0077] The root portion 321 of the second hose 320 extends from the root portion of the second hose 320, which is attached to the second hose attachment portion 360, to a predetermined position. The predetermined position is where the outer circumferential surface of the second hose 320 is supported by the second shape-maintaining member 350. The opposite side portion 322 of the second hose 320 extends from the predetermined position to a connection portion 325 connected to the ceiling-mounted C-arm 313.

[0078] like Figure 11 As shown, the second shape-maintaining member 350 is formed such that one end of the second shape-maintaining member 350 is rotatably connected to the second hose mounting portion 360, and the other end thereof extends to a predetermined position of the second hose 320. One end of the second shape-maintaining member 350 is mounted on the second member portion 366 of the second hose mounting portion 360. The second shape-maintaining member 350 is configured to maintain the shape of the root side portion 321 of the second hose 320. A retaining piece 351 (see FIG. 1 ) for supporting the outer peripheral surface of the second hose 320 is provided at the other end of the second shape-maintaining member 350. Figure 13 The second shape-maintaining member 350 is configured to support the second hose 320 from below using a holder 351. The second shape-maintaining member 350 is formed of a metal plate-shaped member.

[0079] The second shape-maintaining member 350 is configured so that the other end of the second shape-maintaining member 350 is rotated in the first rotation direction R1 along with the root portion 321 of the second hose 320 around the same rotation axis 367 as the rotation member 364 by the second force-applying portion 333. The second shape-maintaining member 350 is rotatably connected to the second hose mounting portion 360. Figure 13 ) The second shape-maintaining member 350 is rotatably supported. The rotation of the root portion 321 of the second hose 320 in the first rotation direction R1 by the second biasing portion 333 will be described later.

[0080] The ceiling-mounted C-arm support unit 331 is installed on the ceiling of the examination room and supports the ceiling-mounted C-arm 313 by sandwiching the ceiling-mounted C-arm 313 in a direction perpendicular to the circumferential direction.

[0081] like Figure 12 As shown, the second hose mounting portion 360 is provided to protrude from the side surface of the ceiling-mounted walking C-arm support portion 331. The second hose mounting portion 360 includes a base mounting member 363 and a rotating member 364.

[0082] like Figure 13 As shown, the root mounting member 363 is an L-shaped plate-like member. The root mounting member 363 includes a first member portion 365 and a second member portion 366. One end portion of the first member portion 365 extending in the longitudinal direction intersects with one end portion of the second member portion 366 extending in the longitudinal direction. The root mounting member 363 is formed of a metal member, for example. Figure 13 In the figure, the second hose 320 is omitted for convenience of explanation.

[0083] like Figure 12 As shown, the root portion of the second hose 320 is attached to the first member portion 365 of the root mounting member 363. The second shape-maintaining member 350 and the rotating member 364 are connected to the second member portion 366 of the root mounting member 363. The second shape-maintaining member 350 is connected to the surface 366a of the second member portion 366 on the second hose 320 side, while the rotating member 364 is connected to the surface 366b of the second member portion 366 opposite the surface 366a. In other words, the second shape-maintaining member 350 is arranged on one side of the second member portion 366 of the root mounting member 363, and the rotating member 364 is arranged on the other side. The second shape-maintaining member 350 and the rotating member 364 are connected via a rotating shaft 367 and a connecting member 368. The second shape-maintaining member 350 and the rotating member 364 are mounted so as to be rotatable relative to the second member portion 366 of the root mounting member 363.

[0084] The rotating member 364 is formed, for example, from a metal plate-shaped member. The rotating member 364 is configured to be interlocked with the second shape-maintaining member 350 via a rotating shaft 367 and a connecting member 368. The rotating member 364 is integrally formed with the second shape-maintaining member 350 and the root portion 321 of the second hose 320, and is rotatable about the rotating shaft 367 relative to the second member portion 366 of the root mounting member 363.

[0085] The connecting member 368 is configured to connect the end portion of the rotating member 364 on the side opposite to the side where the rotating shaft 367 is located and one end side of the second shape-maintaining member 350. The connecting member 368 is configured so as not to contact the second member portion 366 of the root attachment member 363 when the rotating member 364 and the second shape-maintaining member 350 rotate. The connecting member 368 is, for example, a metal rod-shaped member.

[0086] like Figure 11 As shown, the second force applying portion 333 is configured to apply force so that the root side portion 321 of the second hose 320 is wound around the rotation center line O (refer to FIG. Figure 9 ) in the first rotational direction R1 and upward. Furthermore, the second force-applying portion 333 is configured to apply force to inhibit downward rotation of the root portion 321 of the second hose 320 about the rotational axis 367 in the second rotational direction R2, which is opposite to the first rotational direction R1. The second force-applying portion 333 is comprised of a tension spring. One end of the second force-applying portion 333 is connected to the second portion 366 of the root mounting member 363, and the other end is connected to the connecting member 368.

[0087] like Figure 13 As shown, the first stopper 361 is provided on the upper portion of the surface 366a of the second portion 366 of the root mounting member 363. The first stopper 361 is configured to be arranged at the upper limit position Q (see FIG. 1 ) when the second hose 320 is arranged. Figure 9 ) in the state of restricting the root side portion 321 of the second hose 320 from rotating in the first rotation direction R1 (refer to Figure 11 ) and is an upward rotation. That is, the first stopper 361 is configured to limit the second shape-maintaining member 350 from rotating in the first rotation direction R1 and upward when the second hose 320 is arranged at the upper limit position Q. Figure 9 ) direction, the upper limit position Q is the opposite side 321a (refer to Figure 11) is located outside the ceiling walking C-arm 313 and above the second hose mounting portion 360, separated from the second hose mounting portion 360. The first stopper 361 is composed of, for example, a metal rod-shaped member. When the second hose 320 is arranged at the upper limit position Q, the first stopper 361 is brought into contact with the second shape-maintaining member 350 to limit the second force-applying portion 333 from rotating the second shape-maintaining member 350 in the first rotation direction R1. Figure 13 In the figure, the second hose 320 is omitted for convenience of explanation.

[0088] The second stopper 362 is provided at the lower portion of the surface 366a of the second portion 366 of the root mounting member 363. The second stopper 362 is configured to restrict the rotation of the root side portion 321 of the second hose 320 in the second rotation direction R2 and downward beyond a predetermined range. The second stopper 362 is configured not to restrict the rotation angle of the ceiling-mounted C-arm 313. For example, when the ceiling-mounted C-arm 313 is rotated in the circumferential direction ( Figure 9 When the second hose 320 moves in the B2 direction (direction B2), further rotation caused by the subject or the like accidentally pulling the second hose 320 downward is restricted. The second stopper 362 is composed of a metal rod-shaped member, for example.

[0089] like Figure 9 As shown, the second cover 334 is configured to be attached to the second hose mounting portion 360 (see Figure 11 ), rotating member 364 (refer to Figure 11 ) and the second force applying portion 333 (refer to Figure 11 ) to overwrite.

[0090] The third C-arm driving mechanism 335 is configured to drive the ceiling-mounted C-arm 313. The third C-arm driving mechanism 335 is provided inside the ceiling-mounted C-arm supporting portion 331. The third C-arm driving mechanism 335 includes a motor and a driver.

[0091] The fourth C-arm driving mechanism 336 is configured to drive the ceiling-mounted C-arm supporting unit 331. The fourth C-arm driving mechanism 336 is provided inside the ceiling-mounted C-arm supporting unit 331. The fourth C-arm driving mechanism 336 includes a motor and a driver.

[0092] The second base moving mechanism 337 is configured to move the second base 330, which is mounted on the ceiling, along the ceiling and to move the ceiling-mounted C-arm 313 to a desired imaging position along with the second base 330. The second base moving mechanism 337 is disposed within the second base 330 and includes a motor and a driver.

[0093] Since the control device 340 including the image processing unit 342 has the same configuration as the control device 40 including the image processing unit 42 of the first embodiment described above, its description will be omitted. Furthermore, the image processing unit 342 is configured to generate an image based on detection signals output from the first detector and the second detector 312 of the floor-standing X-ray imaging unit 301.

[0094] (Rotation of the Base Side Portion of the Second Hose by the Second Force-Exerting Unit)

[0095] Reference Figure 9 and Figure 14 The rotation of the root-side portion 321 of the second hose 320 in the first rotation direction R1 by the second urging portion 333 will be described.

[0096] The ceiling-mounted C-arm 313 moves in the circumferential direction (B1 direction) so that the second detector 312 faces upward. Figure 9 The status shown becomes Figure 14 In the state shown, the connection portion 325 of the second hose 320 connected to the ceiling-walking C-arm 313 is arranged at a position closer to the ceiling-walking C-arm 313 along the circumference of the ceiling-walking C-arm 313. Figure 9 The second hose 320 is relatively soft. Figure 14 As shown, due to the upward movement of the connection portion 325 of the second hose 320 connected to the ceiling walking type C-shaped arm 313, the opposite side portion 322 (refer to Figure 9 ) produces a drooping portion G1 that droops downward due to the action of gravity.

[0097] In the case where the second force applying portion 333 is not provided (shown by a two-dot chain line), no force is applied to rotate the root side portion 321 of the hose in the first rotation direction R1 and upward. Figure 11 ) applies a force causing the base portion 321 of the second hose 320 to rotate upward in the first rotational direction R1. Consequently, the hanging portion G1 of the second hose 320 is pulled toward the outside and upward of the ceiling-mounted C-arm 313. Consequently, the position of the portion 326 of the hanging portion G1 of the second hose 320, where the hanging portion 326 droops the most, is raised by a distance T compared to the position of the portion 327 of the hanging portion G2 of the hose, where the hanging portion 327 droops the most, when the second force-applying portion 333 is not provided (illustrated by a two-dot chain line). Therefore, the amount of hanging of the second hose 320 can be reduced compared to when the second force-applying portion 333 is not provided. Consequently, contact between the second hose 320 and the subject or peripheral equipment can be suppressed.

[0098] In addition, Figure 9When the ceiling-walking C-shaped arm 313 moves in the circumferential direction (B2 direction) so as to face the second detector 312 downward, the connection portion 325 of the second hose 320 connected to the ceiling-walking C-shaped arm 313 is moved from Figure 9 At this time, the distance from the second hose mounting portion 360 to the connecting portion 325 also becomes longer. Figure 15 As shown, the second shape maintaining member 350 rotates in the second rotation direction R2 against the force of the second force applying portion 333 and the opposite side 321a of the root side portion 321 of the second hose 320 is pulled downward. However, since the second hose 320 is moved along the ceiling walking C-shaped arm 313 (refer to FIG. Figure 9 ) drooping, thereby suppressing the second hose 320 from contacting the subject or peripheral equipment. In addition, the second stopper 362 restricts the root side portion 321 of the second hose 320 from rotating downward in the second rotation direction R2 beyond the predetermined range.

[0099] (Effects of the Second Embodiment)

[0100] In the second embodiment, the following effects can be obtained.

[0101] In the second embodiment, as described above, the C-arm includes both a floor-standing C-arm 13a supported by a first base 30a installed on the floor of the examination room and a ceiling-walking C-arm 313 supported by a second base 330 installed on the ceiling of the examination room, including a ceiling-mounted X-ray camera 302 including the ceiling-walking C-arm 313 and a floor-standing X-ray camera 301 including the floor-standing C-arm 13a. Thus, even when the X-ray imaging apparatus 300 includes both the floor-mounted C-arm 13a and the ceiling-mounted C-arm 313, the base portion 21a of the first hose 20a is biased by the first biasing portion 33c to rotate in the first rotational direction R1, which is away from the floor-mounted C-arm 13a. Furthermore, the base portion 321 of the second hose 320 is biased by the second biasing portion 333 to rotate in the first rotational direction R1, which is away from the ceiling-mounted C-arm 313. This prevents the distance between the first hose 20a and the second hose 320 and the subject placed on the top from decreasing. Consequently, it is possible to prevent the first hose 20a from contacting the subject placed on the top as the floor-mounted C-arm 13a and the ceiling-mounted C-arm 313 move at least in the circumferential direction, and to prevent the second hose 320 from contacting the subject or peripheral equipment.

[0102] Furthermore, in the second embodiment, as described above, the second force-applying portion 333 applies force, causing the base portion 321 of the second hose 320 to rotate upward in the first rotational direction R1 within the ceiling-mounted X-ray imaging unit 302. When the connection portion 325 of the second hose 320, which is connected to the ceiling-mounted C-arm 313, moves upward, the opposite-side portion 322 of the second hose 320 is pulled upward and outward of the ceiling-mounted C-arm 313. This reduces the amount of sagging of the second hose 320 at the drooping portion G1 of the opposite-side portion 322 of the second hose 320, further preventing the side of the base portion 321 of the second hose 320, opposite the second hose mounting portion 360, from approaching a subject placed on the ceiling. Consequently, contact between the second hose 320 and the subject or peripheral equipment can be further reduced.

[0103] Furthermore, in the second embodiment, as described above, the second force applying portion 333 applies force to rotate the base portion 321 of the second hose 320 upward in the first rotational direction R1 about the rotation axis 367 extending along the rotational centerline of the ceiling-mounted C-arm 313, and also applies force to suppress downward rotation of the base portion 321 of the second hose 320 in the second rotational direction R2, which is opposite to the first rotational direction R1, about the rotation axis 367. This allows the base portion 321 of the second hose 320 to rotate about the rotation axis 367 extending along the rotational centerline of the ceiling-mounted C-arm 313, thereby reliably rotating the base portion 321 of the second hose 320 upward in the first rotational direction R1.

[0104] Furthermore, in the second embodiment, as described above, the second hose mounting portion 360 includes a base mounting member 363 to which the base of the second hose 320 is mounted, and a rotation member 364 connected to the second biasing portion 333 and mounted so as to be rotatable relative to the base mounting member 363 and to rotate together with the base portion 321 of the second hose 320. This ensures that the rotation member 364 can reliably rotate relative to the base mounting member 363 together with the base portion 321 of the second hose 320.

[0105] Furthermore, as described above, the second embodiment further includes a second shape-maintaining member 350, one end of which is rotatably connected to the second hose mounting portion 360. The second shape-maintaining member 350 maintains the shape of the root portion 321 of the second hose 320, and when one end is rotated, the other end thereof is rotated in conjunction with the root portion 321 of the second hose 320 in the first rotational direction R1 about the same rotation axis 367 as the rotation member 364. Thus, the rotation member 364 and the second shape-maintaining member 350 can be integrally rotated in conjunction with the root portion 321 of the second hose 320 about the same rotation axis 367 in the first rotational direction R1.

[0106] Furthermore, as described above, the second embodiment further includes a connecting member 368 that connects the end portion of the rotating member 364 on the side opposite to the rotating shaft 367 to the second shape-maintaining member 350. One end of the second force-applying portion 333 is connected to the root mounting member 363, and the other end is connected to the connecting member 368. Thus, the second force-applying portion 333 can apply a force to the second shape-maintaining portion and the rotating member 364, thereby applying a force to rotate the root portion 321 of the second hose 320 in the first rotational direction R1, and upward.

[0107] In the second embodiment, as described above, the second shape maintaining member 350 supports the outer peripheral surface of the root portion 321 of the second hose 320. This allows the root portion 321 of the second hose 320 to rotate directly upward in the first rotation direction R1.

[0108] Furthermore, as described above, the second embodiment further includes a first stopper 361. When the base portion 321 of the second hose 320, opposite to the second hose mounting portion 360, is positioned at the upper limit position Q, further outward of the ceiling-mounted C-arm 313 relative to the second hose mounting portion 360 and spaced above the second hose mounting portion 360, the first stopper 361 restricts upward rotation of the base portion 321 of the second hose 320 in the first rotational direction R1. Thus, when the second hose 320 is positioned at the upper limit position Q, further rotation of the second shape-maintaining member 350 in the first rotational direction R1 by the second biasing portion 333 is restricted.

[0109] [Modification]

[0110] The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the claims, not by the description of the embodiments described above, and includes all modifications (variations) within the meaning and scope equivalent to the claims.

[0111] For example, while the first and second embodiments described above illustrate examples in which the C-arm 13 moves in a circumferential direction, the present invention is not limited thereto. For example, the movement or rotation direction of the C-arm 13 may be in the right anterior oblique (RAO) direction of the subject S or the left anterior oblique (LAO) direction of the subject S. Furthermore, the C-arm 13 may also move or rotate in a direction that combines circumferential movement with the right anterior oblique (RAO) direction of the subject S or the left anterior oblique (LAO) direction of the subject S.

[0112] Furthermore, in the first embodiment described above, the biasing portion 33 applies a force to rotate the base portion 21 of the hose 20 in the first rotational direction R1 about the central axis 61 of the hose mounting portion 60. However, the present invention is not limited to this. For example, the biasing portion 33 may be configured to apply a force to rotate the base portion 21 of the hose 20 about an axis perpendicular to the central axis 61 of the hose mounting portion 60.

[0113] Furthermore, in the first embodiment described above, the base portion 21 of the hose 20 is formed to extend from the hose mounting portion 60 along the central axis 61 of the hose mounting portion 60, and is formed to extend obliquely relative to the central axis 61 of the hose mounting portion 60 on the side opposite to the hose mounting portion 60. However, the present invention is not limited to this. For example, the base portion 21 of the hose 20 may also be formed to extend obliquely relative to the central axis 61 of the hose mounting portion 60.

[0114] Furthermore, in the first embodiment described above, the side of the base portion 21 of the hose 20 opposite the hose mounting portion 60 is positioned at the outer limit position P, further outward of the C-arm than the hose mounting portion 60. However, the present invention is not limited to this. For example, the side of the base portion 21 of the hose 20 opposite the hose mounting portion 60 may be positioned inward of the C-arm 13 relative to the hose mounting portion 60.

[0115] Furthermore, in the first embodiment described above, an example is shown in which the shape-retaining member 50 is inserted through the base portion 21 of the hose 20 to maintain the shape of the base portion 21 of the hose. However, the present invention is not limited to this. The shape-retaining member 50 may be omitted. For example, the base portion 21 of the hose 20 itself may be formed of a relatively rigid material to prevent deformation. Furthermore, the shape-retaining member 50 may be omitted, and a portion of the hose mounting portion 60 may be formed to protrude outward to prevent deformation.

[0116] In the first embodiment, the shape-maintaining member 50 is formed of a metal rod-shaped member, but the present invention is not limited thereto. For example, the shape-maintaining member 50 may be made of resin instead of metal, or may be formed of a tubular member instead of a rod-shaped member.

[0117] In the first embodiment, the biasing portion 33 is configured by the tension spring 33a and the wire 33b, but the present invention is not limited thereto. For example, the biasing portion 33 may be configured by a torsion spring or a spring spring.

[0118] Furthermore, in the first embodiment, an example is shown in which the cover 34 covering the urging portion 33 is provided, but the present invention is not limited thereto. The urging portion 33 may not be covered by the cover 34 .

[0119] In the first embodiment, the biasing portion 33 is provided on the base 30 , but the present invention is not limited thereto. For example, the biasing portion 33 may be provided at a location other than the base 30 or may be provided independently.

[0120] Furthermore, in the first embodiment described above, the hose mounting portion 60 includes the inner cylindrical portion 62, and the base of the shape-retaining member 50 is connected to the inner cylindrical portion 62 of the hose mounting portion 60. However, the present invention is not limited to this. For example, the shape-retaining member 50 may include the inner cylindrical portion 62 at the base of the shape-retaining member 50, and the inner cylindrical portion 62 of the shape-retaining member 50 may be connected to the outer cylindrical portion 63 of the hose mounting portion 60.

[0121] Furthermore, in the first embodiment, the base portion 21 of the hose 20 is configured to be less deformable, but the present invention is not limited thereto. For example, the base portion 21 of the hose 20 may not be configured to be less deformable.

[0122] In the first embodiment, the X-ray imaging device 100 is an example of an X-ray imaging device with a floor-mounted C-arm, but the present invention is not limited thereto. For example, the X-ray imaging device may be an X-ray imaging device with a ceiling-mounted C-arm.

[0123] Furthermore, in the second embodiment described above, the second force applying portion 333 applies force to rotate the base portion 321 of the second hose 320 upward in the first rotational direction R1. However, the present invention is not limited thereto. For example, the second force applying portion 333 may be configured to apply force to rotate the base portion 321 of the second hose 320 in a direction that separates the base portion 321 from the ceiling-mounted C-arm 313 and upward.

[0124] Furthermore, in the second embodiment described above, an example is shown in which a connecting member 368 is further provided to connect the rotating member 364 and the second shape-maintaining member 350. However, the present invention is not limited thereto. For example, the connecting member 368 may be omitted and the other end of the second biasing portion 333 may be connected to the second hose 320.

[0125] Furthermore, in the second embodiment described above, the shape of the root portion 321 of the second hose 320 is maintained by the second shape-maintaining member 350. However, the present invention is not limited to this. The second shape-maintaining member 350 may be omitted. For example, the root portion 321 of the second hose 320 may be formed of a material having a higher rigidity than the opposite portion 322, thereby making it less susceptible to deformation.

[0126] Furthermore, in the second embodiment described above, the second shape-maintaining member 350 is configured to support the outer peripheral surface of the root portion 321 of the second hose 320. However, the present invention is not limited to this. For example, the second shape-maintaining member 350 may be configured to penetrate the interior of the root portion 321 of the second hose 320 and maintain the shape of the root portion 321 of the second hose 320 from the inside of the second hose 320.

[0127] Furthermore, while the second embodiment described above includes the first stopper 361 and the second stopper 362, the present invention is not limited thereto. For example, the first stopper 361 and the second stopper 362 may not be provided. For example, even without the first stopper 361, the spring constant of the second force-applying portion 333 may be set so that the position where the tensile force of the second force-applying portion 333, which is a tension spring, and the force applied to the second shape-maintaining member 350 in the second rotational direction R2 are balanced is the upper limit position Q.

[0128] Furthermore, while the second embodiment described above illustrates an example in which the root mounting member 363 includes the first member portion 365 and the second member portion 366, the present invention is not limited thereto. For example, the root mounting member 363 may not include either the first member portion 365 or the second member portion 366, and the structure of the root mounting member 363 is not particularly limited.

[0129] [form]

[0130] It will be understood by those skilled in the art that the above-described exemplary embodiments are specific examples of the following aspects.

[0131] (Item 1)

[0132] An X-ray imaging device, wherein:

[0133] The X-ray imaging device comprises:

[0134] X-ray source;

[0135] a detector that detects X-rays emitted from the X-ray source;

[0136] a C-shaped arm supporting the X-ray source and the detector;

[0137] a hose that houses wiring connected to at least one of the X-ray source and the detector, the hose including a root-side portion and an opposite-side portion connected to the C-arm on a side opposite to the side where the root-side portion is located;

[0138] a base including a C-arm supporting portion for rotatably supporting the C-arm and a hose mounting portion for rotatably mounting the root portion of the hose;

[0139] a biasing portion configured to bias the base portion of the hose so as to rotate in a first rotational direction away from the outside of the C-arm about the hose mounting portion; and

[0140] An image processing unit generates an image based on the detection signal output from the detector.

[0141] (Item 2)

[0142] The X-ray imaging device according to item 1, wherein

[0143] The root side portion of the hose is formed to extend from the hose mounting portion along the central axis of the hose mounting portion, and is formed to extend obliquely with respect to the central axis of the hose mounting portion on the side opposite to the side where the hose mounting portion is located.

[0144] The urging portion urges the base portion of the hose to rotate in the first rotation direction about the central axis of the hose mounting portion.

[0145] (Item 3)

[0146] The X-ray imaging device according to item 1 or 2, wherein:

[0147] The side of the root side portion of the hose opposite to the hose mounting portion is arranged at an outer limit position separated from the hose mounting portion toward the outside of the C-arm.

[0148] The urging portion urges the base portion of the hose to suppress rotation of the base portion of the hose in a second rotational direction opposite to the first rotational direction associated with movement of the opposite side of the hose toward the inside of the C-arm.

[0149] (Item 4)

[0150] The X-ray imaging device according to any one of items 1 to 3, wherein

[0151] The base side portion of the hose is configured to be less likely to deform.

[0152] (Item 5)

[0153] The X-ray imaging device according to any one of items 1 to 4, wherein

[0154] It also includes a shape maintaining member, the root of which is connected to the hose mounting portion, and the shape maintaining member penetrates the interior of the root side portion of the hose to maintain the shape of the root side portion of the hose, and the root is rotated by utilizing the force applying portion, so that the front end side rotates in the first rotation direction along with the root side portion of the hose.

[0155] (Item 6)

[0156] The X-ray imaging device according to item 5, wherein

[0157] The shape maintaining member is formed to extend from the hose mounting portion along the central axis of the hose mounting portion, and is formed to extend at an inclination with respect to the central axis of the hose mounting portion on the front end side.

[0158] (Item 7)

[0159] The X-ray imaging device according to item 5 or 6, wherein

[0160] The shape maintaining member is formed of a metal rod-shaped member.

[0161] (Item 8)

[0162] The X-ray imaging device according to any one of items 1 to 7, wherein

[0163] The force applying portion is provided on the base.

[0164] (Item 9)

[0165] The X-ray imaging device according to item 8, wherein

[0166] The utility model further comprises a cover which is provided on the base and covers the force applying portion.

[0167] (Item 10)

[0168] The X-ray imaging device according to any one of items 1 to 9, wherein

[0169] The force applying portion includes a tension spring and a wire having one end connected to the tension spring and the other end connected to the hose mounting portion.

[0170] (Item 11)

[0171] The X-ray imaging device according to item 10, wherein

[0172] The tension spring biases the hose attachment portion to rotate via the wire, thereby rotating the base portion of the hose in the first rotation direction.

[0173] (Item 12)

[0174] The X-ray imaging device according to any one of items 1 to 11, wherein

[0175] The C-arm is configured as a floor-standing C-arm supported by the base installed on the floor of the examination room or a ceiling-walking C-arm supported by the base installed on the ceiling of the examination room.

[0176] (Item 13)

[0177] The X-ray imaging device according to item 1, wherein

[0178] The C-arm includes both a floor-standing C-arm supported by the base installed on the floor of the examination room and a ceiling-walking C-arm supported by the base installed on the ceiling of the examination room.

[0179] The system includes a ceiling-mounted X-ray imaging unit including the ceiling-mounted walking C-arm and a floor-mounted X-ray imaging unit including the floor-mounted C-arm.

[0180] (Item 14)

[0181] The X-ray imaging device according to item 13, wherein

[0182] The biasing portion biases the ceiling-mounted X-ray imaging unit so that the base portion of the hose rotates upward in the first rotation direction.

[0183] (Item 15)

[0184] The X-ray imaging device according to item 14, wherein

[0185] The force-applying portion applies force so that the root side portion of the hose rotates in the first rotation direction and upward around a rotation axis extending in the direction along the rotation center line of the ceiling-walking C-arm, and applies force so as to suppress the root side portion of the hose from rotating in a second rotation direction and downward around the rotation axis that is opposite to the first rotation direction.

[0186] (Item 16)

[0187] The X-ray imaging device according to item 15, wherein

[0188] The hose mounting portion includes a root mounting member to which the root of the hose is mounted, and a rotating member connected to the biasing portion and mounted to be rotatable relative to the root mounting member so as to rotate together with the root side portion of the hose.

[0189] (Item 17)

[0190] The X-ray imaging device according to item 16, wherein

[0191] It also includes a shape retaining member, one end of which is rotatably connected to the hose mounting portion to maintain the shape of the root side portion of the hose, and by rotating the one end, the other end side is rotated in the first rotation direction around the same rotation axis as the rotating member along with the root side portion of the hose.

[0192] (Item 18)

[0193] The X-ray imaging device according to item 17, wherein

[0194] The device further includes a connecting member connecting an end portion of the rotating member on the side opposite to the side where the rotating shaft is located and the shape maintaining member.

[0195] One end of the force applying portion is connected to the root mounting member, and the other end thereof is connected to the connecting member.

[0196] (Item 19)

[0197] The X-ray imaging device according to item 17, wherein

[0198] The shape-maintaining member is configured to support an outer peripheral surface of the root-side portion of the hose.

[0199] (Item 20)

[0200] The X-ray imaging device according to item 14, wherein

[0201] It also includes a stopper, which limits the rotation of the root side portion of the hose toward the first rotation direction and upward when the side of the root side portion of the hose is arranged at an upper limit position that is separated from the hose mounting portion to the outside of the ceiling walking C-arm and above the hose mounting portion.

Claims

1. An X-ray imaging device, wherein: The X-ray imaging device comprises: X-ray source; a detector that detects X-rays emitted from the X-ray source; a C-shaped arm supporting the X-ray source and the detector; a hose that houses wiring connected to at least one of the X-ray source and the detector, the hose including a root-side portion and an opposite-side portion connected to the C-arm on a side opposite to the side where the root-side portion is located; a base including a C-arm supporting portion for rotatably supporting the C-arm and a hose mounting portion for rotatably mounting the root portion of the hose; a biasing portion configured to bias the base portion of the hose so as to rotate in a first rotational direction away from the outside of the C-arm about the hose mounting portion; and An image processing unit generates an image based on the detection signal output from the detector.

2. The X-ray imaging device according to claim 1, wherein The root side portion of the hose is formed to extend from the hose mounting portion along the central axis of the hose mounting portion, and is formed to extend obliquely with respect to the central axis of the hose mounting portion on the side opposite to the side where the hose mounting portion is located. The urging portion urges the base portion of the hose to rotate in the first rotation direction about the central axis of the hose mounting portion.

3. The X-ray imaging device according to claim 1 or 2, wherein: The side of the root side portion of the hose opposite to the hose mounting portion is arranged at an outer limit position separated from the hose mounting portion toward the outside of the C-arm. The urging portion urges the base portion of the hose to suppress rotation of the base portion of the hose in a second rotational direction opposite to the first rotational direction associated with movement of the opposite side of the hose toward the inside of the C-arm.

4. The X-ray imaging device according to claim 1, wherein The base side portion of the hose is configured to be less likely to deform.

5. The X-ray imaging device according to claim 1, wherein The X-ray imaging device further includes a shape maintaining member, the root of which is connected to the hose mounting portion. The shape maintaining member penetrates the interior of the root side portion of the hose to maintain the shape of the root side portion of the hose, and the root is rotated by the force applying portion, so that the front end side rotates in the first rotation direction along with the root side portion of the hose.

6. The X-ray imaging device according to claim 5, wherein The shape maintaining member is formed to extend from the hose mounting portion along the central axis of the hose mounting portion, and is formed to extend at an inclination with respect to the central axis of the hose mounting portion on the front end side.

7. The X-ray imaging device according to claim 5 or 6, wherein: The shape maintaining member is formed of a metal rod-shaped member.

8. The X-ray imaging device according to claim 1, wherein The force applying portion is provided on the base.

9. The X-ray imaging device according to claim 8, wherein The X-ray imaging device further includes a cover, which is provided on the base and covers the force applying portion.

10. The X-ray imaging device according to claim 1, wherein The force applying portion includes a tension spring and a wire having one end connected to the tension spring and the other end connected to the hose mounting portion.

11. The X-ray imaging device according to claim 10, wherein: The tension spring biases the hose attachment portion to rotate via the wire, thereby rotating the base portion of the hose in the first rotation direction.

12. The X-ray imaging device according to claim 1, wherein The C-arm is configured as a floor-standing C-arm supported by the base installed on the floor of the examination room or a ceiling-walking C-arm supported by the base installed on the ceiling of the examination room.

13. The X-ray imaging device according to claim 1, wherein The C-arm includes both a floor-standing C-arm supported by the base installed on the floor of the examination room and a ceiling-walking C-arm supported by the base installed on the ceiling of the examination room. The X-ray imaging apparatus includes a ceiling-mounted X-ray imaging unit including the ceiling-mounted C-arm and a floor-mounted X-ray imaging unit including the floor-mounted C-arm.

14. The X-ray imaging device according to claim 13, wherein The biasing portion biases the ceiling-mounted X-ray imaging unit so that the base portion of the hose rotates upward in the first rotation direction.

15. The X-ray imaging device according to claim 14, wherein The force-applying portion applies force so that the root side portion of the hose rotates in the first rotation direction and upward around a rotation axis extending in the direction along the rotation center line of the ceiling-walking C-arm, and applies force so as to suppress the root side portion of the hose from rotating in a second rotation direction and downward around the rotation axis that is opposite to the first rotation direction.

16. The X-ray imaging device according to claim 15, wherein The hose mounting portion includes a root mounting member to which the root of the hose is mounted, and a rotating member connected to the biasing portion and mounted to be rotatable relative to the root mounting member so as to rotate together with the root side portion of the hose.

17. The X-ray imaging device according to claim 16, wherein: The X-ray imaging device further includes a shape maintaining member, one end of which is rotatably connected to the hose mounting portion, maintaining the shape of the root side portion of the hose, and wherein the other end of the shape maintaining member is rotated in conjunction with the root side portion of the hose in the first rotation direction around the same rotation axis as that of the rotating member by rotating the one end.

18. The X-ray imaging device according to claim 17, wherein: The X-ray imaging device further includes a connecting member connecting an end portion of the rotating member on the side opposite to the side where the rotating shaft is located and the shape maintaining member. One end of the force applying portion is connected to the root mounting member, and the other end thereof is connected to the connecting member.

19. The X-ray imaging device according to claim 17, wherein The shape-maintaining member is configured to support an outer peripheral surface of the root-side portion of the hose.

20. The X-ray imaging device according to claim 14, wherein The X-ray imaging device further includes a stopper, which restricts the rotation of the root side portion of the hose toward the first rotation direction and upward when the side of the root side portion of the hose opposite to the side where the hose mounting portion is located is arranged at an upper limit position that is separated from the hose mounting portion to the outside of the ceiling-walking C-arm and above the hose mounting portion.

Images