X-ray diagnostic equipment

Abstract

To allow a wide range to be photographed while avoiding complication and upsizing of an X-ray diagnostic device.SOLUTION: An X-ray diagnostic device according to an embodiment comprises a floor-standing base, an arm holder, a C-type arm, an X-ray generator, an X-ray detector, and a supporting member. The floor-standing base is installed on a floor surface. The arm holder is attached to the floor-standing base. The C-type arm is supported by the arm holder, and can rotate in a first direction and a second direction around a horizontal axis. The X-ray generator and the X-ray detector are attached to the C-type arm. The supporting member movably supports the C-type arm from below.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The embodiments disclosed in this specification and drawings relate to an X-ray diagnostic device. [Background technology]

[0002] An example of an X-ray diagnostic device is a cardiovascular X-ray diagnostic device equipped with a slidable C-arm. In order to perform wide-range rotational imaging, such as 3D imaging, in this X-ray diagnostic device, the C-arm is required to rotate, for example, by 200° or more. For this reason, for example, there are structures in which the C-arm slide shaft is doubled, or in which the holder for holding the C-arm is enlarged and multiple rollers for holding the C-arm are arranged side by side.

[0003] In conventional X-ray diagnostic equipment, the use of a dual slide axis leads to a complex structure. Furthermore, increasing the size of the holder increases the overall size of the equipment, and the step behavior of the C-arm as it moves over the rollers reduces the quality of the X-ray images taken by the X-ray detector attached to the C-arm. This makes it difficult to capture a wide area. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-136233 Summary of the Invention [Problem to be solved by the invention]

[0005] The problem to be solved by the embodiments disclosed in this specification and the drawings is to enable imaging of a wide range while avoiding the complexity and size of the X-ray diagnostic apparatus. However, the problem to be solved by the embodiments disclosed in this specification and the drawings is not limited to the above problem. Problems corresponding to the effects of each configuration shown in the embodiments described below can also be positioned as other problems. [Means for solving the problem]

[0006] An X-ray diagnostic apparatus according to an embodiment includes a floor stand, an arm holder, a C-arm, an X-ray generator, an X-ray detector, and a support member. The floor stand is placed on a floor surface. The arm holder is attached to the floor stand. The C-arm is supported by the arm holder and is rotatable in a first direction and a second direction around a horizontal axis. The X-ray generator and the X-ray detector are attached to the C-arm. The support member movably supports the C-arm from below. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of an X-ray diagnostic apparatus 1 according to a first embodiment. [Figure 2] FIG. 2 is a diagram showing the internal structure of an arm holder 13 of the X-ray diagnostic apparatus 1 of the first embodiment. [Figure 3] 1 is a side view of an X-ray diagnostic apparatus 1 according to a first embodiment. [Figure 4] FIG. 1 is a front view of an X-ray diagnostic apparatus 1 according to a first embodiment. [Figure 5] 2A and 2B are diagrams showing an advancing / retreating structure 50 according to the first embodiment. [Figure 6] 2 is a diagram showing a state in which the C-arm 14 of the X-ray diagnostic apparatus 1 of the first embodiment has moved from the reference position in the CRA direction. FIG. [Figure 7] 2 is a diagram showing a state in which the C-arm 14 of the X-ray diagnostic apparatus 1 of the first embodiment has moved from the reference position in the CAU direction. FIG. [Figure 8] FIG. 10 is a side view of an X-ray diagnostic apparatus 2 according to a second embodiment. [Figure 9] FIG. 10 is a diagram showing a state in which the C-arm 24 of the X-ray diagnostic apparatus 2 according to the second embodiment has moved to a holding position. [Figure 10] FIG. 2 is a diagram showing a state in which the C-arm 24 is rotated around the isocenter axis Z1 by the support structure 23. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an X-ray diagnostic apparatus according to an embodiment will be described with reference to the drawings.

[0009] (First embodiment) 1 is a perspective view of an X-ray diagnostic apparatus 1 according to the first embodiment. The X-ray diagnostic apparatus 1 of the first embodiment is a so-called floor-standing X-ray diagnostic apparatus. The X-ray diagnostic apparatus 1 is used by being placed on a floor surface R. The X-ray diagnostic apparatus 1 includes, for example, a floor rotating arm 11, a stand 12, an arm holder 13, a C-arm 14, and downward support rollers 15.

[0010] The floor rotating arm 11 is installed on the floor surface R. One end of the floor rotating arm 11 is located directly below the isocenter IS. The floor rotating arm 11 is rotatable around an isocenter axis Z1, which is a vertical axis passing through the isocenter IS. A stand 12 is erected at the other end of the floor rotating arm 11. The floor rotating arm 11 is an example of a floor-mounted stand. The floor-mounted stand may be something other than the floor rotating arm 11, for example, a non-rotatable stand may be used instead of the floor rotating arm 11.

[0011] The stand 12 is supported at the other end of the floor-mounted rotating arm 11 so as to be rotatable about a vertical rotation axis Z2 parallel to the isocenter axis Z1. An arm holder 13 is attached to the floor-mounted rotating arm 11 via the stand 12. The arm holder 13 is supported relative to the stand 12 so as to be rotatable about an arm horizontal rotation axis (hereinafter referred to as the main axis) Z3 that is perpendicular to the isocenter axis Z1.

[0012] The arm holder 13 supports the C-arm 14 so that it can slide and rotate about a slide rotation axis Z4. An X-ray generator 41 is attached to one end of the C-arm 14. An X-ray detector 42 is attached to the other end of the C-arm 14. The X-ray generator 41 includes, for example, an X-ray tube (bulb) that irradiates X-rays, a collimator, and the like. The X-ray detector 42 is, for example, a so-called flat panel detector that includes a plurality of X-ray detection semiconductor elements arranged two-dimensionally.

[0013] The C-arm 14 is rotatable in a cranial direction (hereinafter referred to as the CRA direction) and a caudal direction (hereinafter referred to as the CAU direction) from a reference position shown in FIG. 1 . The reference position is a position where one end of the C-arm 14 is at its lowest point. The CRA direction is, for example, a direction in which one end of the C-arm 14 at the reference position moves away from the arm holder 13, and the CAU direction is, for example, a direction in which one end of the C-arm 14 at the reference position moves toward the arm holder 13. The CRA direction is an example of a first direction. The CAU direction is an example of a second direction. Grooves are formed on both side surfaces of the C-arm 14 along the side surfaces of the C-arm 14, and the arm holder 13 supports the C-arm 14 by sandwiching the side surfaces of the C-arm 14 from both sides.

[0014] The C-arm 14 has a curved back surface 14A as the support surface that comes into contact with the lower support roller 15. The radius of curvature of the curved surface of the C-arm 14 is equal to or less than the radius of rotation of the C-arm 14. Therefore, when the C-arm 14 rotates from the reference position in the CRA direction, the distance between the tip of the C-arm 14 and the floor rotating arm is constant, or the tip of the C-arm 14 moves in a direction gradually moving away from the floor rotating arm 11. Therefore, the C-arm 14 moving in the CRA direction or the CAU direction does not interfere with the floor rotating arm 11, etc.

[0015] The floor rotating arm 11 supports an arm holder 13 via a stand 12 so as to be rotatable around an isocenter axis (vertical axis). A C-arm 14 supported by the arm holder 13 is rotatable around the isocenter axis Z1 as the floor rotating arm 11 rotates.

[0016] 2 is a diagram showing the internal structure of the arm holder 13 of the X-ray diagnostic apparatus 1 of the first embodiment. A plurality of roller units 30 are provided inside the arm holder 13. Each roller unit 30 has a plurality of internal support rollers 31. The roller units 30 are arranged in grooves in the C-arm 14. The multiple internal support rollers 31 in the roller units 30 are arranged in contact with the curved surface of the C-arm 14.

[0017] The C-arm 14 is supported by the arm holder 13 via a plurality of internal support rollers 31. The C-arm 14 shown in Fig. 1 is positioned at a reference position. As the internal support rollers 31 rotate, the C-arm 14 rotates around the slide rotation axis Z4, and can rotate from the reference position in either the CRA direction or the CAU direction.

[0018] The lower support roller 15 is provided on the upper surface of one end of the floor-mounted rotating arm 11. The lower support roller 15 is, for example, a sphere. The lower support roller 15 is provided, for example, at a point on the isocenter axis Z1 on the upper surface of the floor-mounted rotating arm 11 so as to be rotatable in any direction. The lower support roller 15 comes into contact with the C-arm 14 in the reference position.

[0019] The lower support rollers 15 do not need to come into contact with the C-arm 14 in the reference position. The lower support rollers 15 support the sliding C-arm 14 while rotating as the C-arm 14 slides from the reference position in the CRA direction. The lower support rollers 15 are an example of a support member and a rotating support. The support member may be a support fixed to the floor rotating arm 11 instead of a rotating support like the lower support rollers 15. If the support member is a support fixed to the floor rotating arm 11, it may be a support that slidably supports the C-arm by, for example, making sliding contact with the C-arm when it comes into contact with the C-arm.

[0020] Fig. 3 is a side view of the X-ray diagnostic apparatus 1 of the first embodiment, and Fig. 4 is a front view of the X-ray diagnostic apparatus 1 of the first embodiment. Figs. 3 and 4 show a state in which the floor-mounted rotary arm 11 is in a reference position. The lower support roller 15 comes into contact with, for example, the back surface 14A of the C-arm 14 that has moved from the reference position in the CRA direction. The back surface 14A of the C-arm 14 has a cross-sectional curved shape that is convex outward.

[0021] Since the lower support roller 15 is spherical, the back surface 14A of the C-arm 14 and the lower support roller 15 come into contact at one point. The lower support roller 15 is provided at a specified support position on the floor-mounted rotating arm 11. The support position may also be set at a position other than on the floor-mounted rotating arm 11. By coming into contact with the C-arm 14, the lower support roller 15 supports the C-arm 14 from below. When supporting the C-arm 14, the lower support roller 15 is in a state where it receives the load of the C-arm 14.

[0022] At the reference position, the C-arm 14 is supported by the internal support rollers 31 of the arm holder 13, and the internal support rollers 31 bear the support load of the C-arm 14. As the C-arm 14 rotates from the reference position toward the CRA direction, the support load of the C-arm 14 is transferred from the internal support rollers 31 to the lower support rollers 15.

[0023] The lower support rollers 15 are attached to the floor rotating arm 11 so as to be rotatable in any direction. When the C-arm 14 rotates in the CRA direction or the CAU direction while in contact with the rollers, the lower support rollers 15 rotate in conjunction with the rotation of the C-arm 14. Because the back surface 14A of the C-arm 14 has a curved cross section that is convex outward, the lower support rollers 15 rotate in conjunction with the rotation of the C-arm 14 when the C-arm 14 rotates in the swing direction α around the main axis Z3 while in contact with the rollers. The lower support rollers 15 support the C-arm 14 while rotating in conjunction with the rotation of the C-arm 14.

[0024] Furthermore, the floor-mounted rotating arm 11 is provided with an advancing / retracting structure 50 that moves the lower support roller 15 forward and backward (up and down). FIG. 5 is a diagram showing the advancing / retracting structure 50 of the first embodiment. The advancing / retracting structure 50 includes a lifting / lowering stage 51 and an actuator 52. The lower support roller 15 is rotatably mounted on the lifting / lowering stage 51. An elastic body or a buffer material, for example, is interposed between the lifting / lowering stage 51 and the lower support roller 15. The actuator 52 moves the lifting / lowering stage up and down, thereby advancing and retracting the lower support roller 15.

[0025] When the actuator 52 raises the lifting stage 51, the lower support rollers 15 advance and are exposed from the surface of the floor-mounted rotating arm 11, and are positioned at the set position. When the actuator 52 lowers the lifting stage 51, the lower support rollers 15 retreat and are stored inside the floor-mounted rotating arm 11, and are positioned at the park position.

[0026] The lower support roller 15 is provided on an advancing / retracting structure 50 and is movable between a set position and a park position. This allows the lower support roller 15 to be selectively set or parked as needed. In the first embodiment, an advancing / retracting structure is provided, but the advancing / retracting structure 50 does not necessarily have to be provided.

[0027] The C-arm 14 can rotate about the main axis Z3 when it is in the reference position or when it has moved from the reference position in the CRA direction or the CAU direction. Because the lower support roller 15 is spherical, the contact portion of the lower support roller 15 with the C-arm 14 has a curved surface with a curvature about an axis parallel to the main axis Z3. Therefore, when the C-arm 14 has moved from the reference position in the CRA direction and rotates about the main axis Z3, the C-arm 14 and the lower support roller 15 come into rolling contact, and the lower support roller 15 also rotates as the C-arm 14 rotates.

[0028] Next, an example of the operation of the C-arm 14 will be described. Fig. 6 is a diagram showing a state in which the C-arm 14 in the X-ray diagnostic apparatus 1 of the first embodiment has moved from the reference position in the CRA direction. Fig. 6 shows a state in which the C-arm 14 has been rotated 90° in the CRA direction from the reference position (0° position).

[0029] The C-arm 14, which moves from the reference position in the CRA direction, is supported by the arm holder 13 and also by the lower support rollers 15. Therefore, when performing wide-range rotational imaging such as R-DA (R-Digital Angiography), R-DSA (R-Digital Subtraction Angiography), and 3D-DSA, the C-arm 14 can be reliably supported.

[0030] 7 is a diagram showing a state in which the C-arm 14 of the X-ray diagnostic apparatus 1 of the first embodiment has moved from the reference position in the CAU direction. FIG. 7 shows a state in which the C-arm 14 has been rotated 90° in the CAU direction. When the C-arm 14 is rotated from the reference position in the CAU direction, the C-arm 14 moves away from the lower support rollers 15 and is supported only by the arm holder 13. At this time, the heavy X-ray generator 41 attached to one end of the C-arm 14 approaches the arm holder 13.

[0031] Therefore, the C-arm 14 is supported by the arm holder 13 in a state where its weight is large and its center of gravity is close to the X-ray generator 41. Therefore, although the C-arm 14 is supported only by the arm holder 13, it can be held at a position close to the center of gravity, and therefore the C-arm 14 can be held in a stable state.

[0032] As described above, the X-ray diagnostic apparatus 1 of the first embodiment can realize a C-arm slide mechanism that can accommodate a wide imaging area required for 3D imaging, etc., without having to provide a dual C-arm 14 or enlarge the arm holder 13 (holder portion) that supports the C-arm 14, as in conventional X-ray diagnostic apparatuses. Furthermore, by supporting the C-arm 14 with the lower support rollers 15, the C-arm 14 can complete transfer between multiple support rollers before a load is applied to the internal support rollers 31 of the arm holder 13 in response to a change in the center of gravity that accompanies the sliding movement of the C-arm 14.

[0033] This reduces the step behavior when the C-arm 14 moves over the multiple internal support rollers 31, making it possible to obtain good X-ray images and downsize the entire X-ray diagnostic device 1, enabling imaging of a wide range while avoiding the X-ray diagnostic device becoming more complex and larger. This also makes it possible to reduce the installation area of ​​the X-ray diagnostic device 1 and improve accessibility around the device, thereby expanding the operator's workspace and improving workability.

[0034] (Second embodiment) Next, a second embodiment will be described. Fig. 8 is a side view of an X-ray diagnostic apparatus 2 according to the second embodiment. The X-ray diagnostic apparatus 2 of the second embodiment includes, for example, a ceiling-mounted arm 21, an arm holder 22, a support structure 23, and a C-arm 24.

[0035] The suspension arm 21 is installed, for example, suspended from the ceiling T of an examination room. An arm holder 22 is attached to the lower end of the suspension arm 21. The arm holder 22 supports a C-arm 24 from the side at the intersection of the suspension arm 21 and the main axis Z3. The suspension arm 21 is an example of a suspension base.

[0036] The arm holder 22 includes roller units 30 (see FIG. 2) similar to those in the first embodiment. Each roller unit 30 includes a plurality of internal support rollers 31. The roller units 30 in the arm holder 22 support the C-arm 24, which has grooves, by sandwiching the sides of the C-arm 24 from both sides, as in the first embodiment, for example.

[0037] The support structure 23 is provided at the upper end of the ceiling-suspended arm 21. The support structure 23 is capable of moving back and forth (up and down) in the vertical direction along the isocenter axis Z1. The support structure 23 is movable between a set position where it holds the C-arm 24 and a park position above the set position and retracted from the set position. The park position is an example of a retracted position.

[0038] The support structure 23 includes a roller unit 30. Like the arm holder 22, the support structure 23 arranged in the set position supports the C-arm 24 from above by sandwiching the sides of the C-arm 24 with the roller units 30. The support structure 23 supports the C-arm 24 from above, and the C-arm 24 is supported by the ceiling-suspended arm 21 via the support structure 23. The support structure 23 is an example of a support member.

[0039] The C-arm 24 has a configuration similar to that of the C-arm 14 in the X-ray diagnostic apparatus 1 of the first embodiment. The C-arm 24 is rotatable in the CRA direction and the CAU direction around the slide rotation axis Z4 by a roller unit 30 provided on the arm holder 22 and the support structure 23. An X-ray generator 41 is provided at one end of the C-arm 24. An X-ray detector 42 is provided at the other end of the C-arm 24. A position through which the C-arm 24 passes, which is obtained by rotating the C-arm 24 90° in the CAU direction from the reference position, is called a holding position, and the set position of the support structure 23 is the holding position.

[0040] When the C-arm 24 is in the holding position, support by the roller unit 30 of the arm holder 22 is released, and the C-arm 24 can be separated from the arm holder 22. The support structure 23 is rotatable around the isocenter axis Z1. In this state, the C-arm 24 is supported by the support structure 23, and the support structure 23 rotatably holds the C-arm 24 separated from the arm holder 22. The support structure 23 allows the C-arm 24 to be separated from the arm holder 22 and rotate the C-arm 24 around the isocenter axis Z1.

[0041] Next, an example of the operation of the X-ray diagnostic apparatus 2 of the second embodiment will be described. Here, the operation will be described in which the C-arm 24, which is in the reference position, moves to the holding position, and then rotates around the isocenter axis Z1 held by the support structure 23. In the X-ray diagnostic apparatus 2, the C-arm 24 is supported by the ceiling-suspended arm 21 via the arm holder 22 when it is in the reference position. At this time, the C-arm 24 is rotatable around the main axis Z3.

[0042] Next, the C-arm 24 is rotated in the CAU direction, but before that, in order to advance (lower) the support structure 23 and place it in the set position, the C-arm 24 is slid in the CRA direction to a position where it does not interfere with the lowering of the support structure 23. Thereafter, after the support structure 23 is placed in the set position, the C-arm 24 is slid in the CAU direction to a position where it is released from the arm holder 22.

[0043] While moving from the reference position to the holding position, the C-arm 24 is supported by the internal support rollers 31 in both the arm holder 22 and the support structure 23. The C-arm 24, supported by the support rollers in both the arm holder 22 and the support structure 23, is further rotated in the CAU direction by operating the roller units 30 of the arm holder 22 and the support structure 23, and reaches the holding position. At this time, the C-arm 24 is supported by the support structure 23.

[0044] 9 is a diagram showing a state in which the C-arm 24 of the X-ray diagnostic apparatus 2 of the second embodiment has moved to the holding position. The C-arm 24 that has moved to the holding position is supported by the ceiling-suspended arm 21 via the support structure 23. At this time, by moving the C-arm 24 away from the arm holder 22, the C-arm 24 can be made rotatable around the isocenter axis Z1.

[0045] 10 is a diagram showing a state in which the C-arm 24 is rotated around the isocenter axis Z1 by the support structure 23. When the support structure 23 rotates the C-arm 24 around the isocenter axis Z1, the C-arm 24 can rotate away from the arm holder 22 in a rotation direction β.

[0046] Similar to the X-ray diagnostic apparatus 1 of the first embodiment, the X-ray diagnostic apparatus 2 of the second embodiment can realize a C-arm sliding mechanism that can accommodate a wide imaging area required for 3D imaging, etc., without having to use a dual C-arm structure or enlarging the holder portion that supports the C-arm.

[0047] Furthermore, in the X-ray diagnostic apparatus 2 of the second embodiment, the support structure 23 supports the C-arm 24, so that the C-arm 24 can be rotated around the isocenter axis Z1. Therefore, the X-ray diagnostic apparatus 2 can cause the C-arm 24 to perform CRA / CAU rotation similar to that of a so-called Ω arm.

[0048] In the first embodiment described above, one lower support roller 15 is provided on the floor-mounted rotating arm 11, but multiple lower support rollers 15 may be provided, or may be provided on a location other than the floor-mounted rotating arm 11. When multiple lower support rollers 15 are provided, the multiple lower support rollers 15 may be arranged in any manner.

[0049] For example, the C-arm 14 may be arranged along the rotation direction when it rotates around the slide rotation axis Z4, or along the rotation direction when it rotates around the main axis Z3. In these cases, one of the multiple lower support rollers 15 may be arranged on the isocenter axis Z1, and the further away from the isocenter axis Z1 the rollers may be arranged higher. By arranging them in this way, the length of time that the C-arm 14 is supported by the lower support rollers 15 can be increased.

[0050] Although the rotating support is a sphere in the first embodiment, the rotating support may have another shape, for example, a cylindrical shape, or a drum shape in which the radius of the cylinder varies along its axial direction and becomes smaller as it goes outward from the center in the axial direction. The drum-shaped rotating support may be arranged so that its axial direction is perpendicular to each of the isocenter axis Z1 and the main axis Z3, or so that its axial direction is perpendicular to each of the isocenter axis Z1 and the slide rotation axis Z4.

[0051] Furthermore, although the rotary support is provided so as to be rotatable in any direction, the rotary support may be provided so that its rotation direction is restricted. In particular, when the rotary support is cylindrical or drum-shaped, its rotation direction may be restricted. For example, the rotation direction of a cylindrical or drum-shaped rotary support may be restricted to a direction perpendicular to its axial direction.

[0052] According to at least one of the embodiments described above, the X-ray diagnostic device includes a floor stand placed on a floor surface, an arm holder attached to the floor stand, a C-arm supported by the arm holder and rotatable in a first direction and a second direction around a horizontal axis, an X-ray generator and an X-ray detector attached to the C-arm, and a support member that movably supports the C-arm from below, thereby making it possible to perform imaging over a wide range while avoiding an increase in the complexity and size of the device.

[0053] Although several embodiments have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0054] 1,2...X-ray diagnostic equipment 11...Floor swivel arm 12...Stand 13...Arm holder 14...C-arm 14A…Back 15...Lower support roller 21...Ceiling arm 22...Arm holder 22A...First holder 23...Support structure 23A…Fitting part 24...C-arm 30...Roller unit 31...Internal support roller 41...X-ray generator 42...X-ray detector 50…Advancing / retracting structure 51...Lifting stage 52...Actuator IS...Isocenter R...Floor surface T...ceiling X…Circulatory system Z1 isocenter axis Z2 vertical rotation axis Z3 spindle Z4 slide rotation axis

Claims

1. a floor stand installed on the floor; an arm holder attached to the floor stand; a C-arm supported by the arm holder and rotatable in a first direction and a second direction around a horizontal axis; an X-ray generator and an X-ray detector attached to the C-arm; a support member that movably supports the C-arm from below, When the C-arm is at a position moved in the cranial direction, which is the first direction, from a reference position, which is a position where one end of the C-arm is at its lowest point, a support load of the C-arm is applied to the support member, and when the C-arm is at a position moved in the chordal direction, which is the second direction, from the reference position, a support load of the C-arm is applied to the arm holder. X-ray diagnostic equipment.

2. A floor stand installed on the floor; an arm holder attached to the floor stand; a C-arm supported by the arm holder and rotatable in a first direction and a second direction around a horizontal axis; an X-ray generator and an X-ray detector attached to the C-arm; a support member that movably supports the C-arm from below, the support member is a rotary support member that supports the C-arm while rotating in accordance with the rotation of the C-arm. X-ray diagnostic equipment.

3. the C-arm has a curved back surface, with the support surface that comes into contact with the support member as the back surface, and the radius of curvature of the curved surface is equal to or less than the radius of rotation of the C-arm; 3. The X-ray diagnostic apparatus according to claim 2.

4. A floor stand installed on the floor; an arm holder attached to the floor stand; a C-arm supported by the arm holder and rotatable in a first direction and a second direction around a horizontal axis; an X-ray generator and an X-ray detector attached to the C-arm; a support member that movably supports the C-arm from below; an advancing / retracting structure for advancing / retracting the support member by advancing one end of the C-arm to a set position where it contacts the C-arm, which is at a reference position where one end of the C-arm is at its lowest point, and retracting the support member to a park position below the set position and away from the C-arm, X-ray diagnostic equipment.

5. The support member supports the C-arm when it is advanced by the advance / retract structure.

5. The X-ray diagnostic apparatus according to claim 4.

6. A floor stand installed on the floor; an arm holder attached to the floor stand; a C-arm supported by the arm holder and rotatable in a first direction and a second direction around a horizontal axis; an X-ray generator and an X-ray detector attached to the C-arm; a support member that movably supports the C-arm from below, the C-arm is rotatable around a main axis perpendicular to the horizontal axis and the vertical axis; a contact portion of the support member with the C-arm having a curved surface having a curvature around a parallel axis parallel to the main axis; X-ray diagnostic equipment.

7. A floor stand installed on the floor; an arm holder attached to the floor stand; a C-arm supported by the arm holder and rotatable in a first direction and a second direction around a horizontal axis; an X-ray generator and an X-ray detector attached to the C-arm; a plurality of support members that movably support the C-arm from below, X-ray diagnostic equipment.

8. the support member supports the C-arm, which slides in the first direction from a reference position where one end of the C-arm is at its lowest point.

8. An X-ray diagnostic apparatus according to claim 1.

9. the floor stand includes a floor swivel arm that supports the arm holder rotatably around a vertical axis; 8. An X-ray diagnostic apparatus according to claim 1.

10. The support member is placed on the isocenter axis of the floor rotation arm.

10. The X-ray diagnostic apparatus according to claim 9.

11. The support member is provided on the floor stand.

11. An X-ray diagnostic apparatus according to any one of claims 1 to 10.

Images