X-ray diagnostic device and x-ray diagnostic system

Abstract

To appropriately fix a protection cap to an X-ray diagnostic device.SOLUTION: An X-ray diagnostic device according to an embodiment includes an X-ray tube, an X-ray detector, a cover, and at least one of a magnetic material and a magnet. The X-ray tube irradiates a subject with X-rays. The X-ray detector detects X-rays transmitted through the subject. A cover covers at least the X-ray tube and the X-ray detector. At least one of the magnetic material and the magnet is arranged in the cover.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The embodiments disclosed in this specification and the drawings relate to an X-ray diagnostic apparatus and an X-ray diagnostic system.

Background Art

[0002] Conventionally, in an X-ray diagnostic apparatus, when diagnosing or treating a circulatory disease of a subject using a catheter, in order to protect the X-ray diagnostic apparatus from contamination by the body fluid or the like of the subject, a cover forming the exterior of the X-ray diagnostic apparatus may be covered with a bag-shaped sterilization cap. The sterilization cap is provided with rubber at the opening at the end. The sterilization cap can be fixed to the cover of the X-ray diagnostic apparatus by the contraction of the opening due to the elasticity of the rubber.

[0003] However, depending on the shape of the cover of the X-ray diagnostic apparatus, it may be difficult to appropriately fix the sterilization cap. For example, when there is no step portion where the sterilization cap can be hooked near the portion to be covered with the sterilization cap, the sterilization cap may cover a wide range up to the step portion away from the target portion. However, depending on the range covered by the sterilization cap, the operation of the movable part may be restricted in order to prevent the sterilization cap from getting caught in the movable part of the X-ray diagnostic apparatus.

[0004] Therefore, it has been difficult for conventional X-ray diagnostic apparatuses to appropriately fix the sterilization cap.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] One of the problems to be solved by the embodiments disclosed in this specification and the drawings is to properly fix a protective cap to an X-ray diagnostic apparatus. However, the problems to be solved by the embodiments disclosed in this specification and the drawings are not limited to the above problems. It is also possible to position, as other problems, the problems corresponding to the respective effects of the respective configurations shown in the embodiments described later.

Means for Solving the Problems

[0007] The X-ray diagnostic apparatus according to the embodiment includes an X-ray tube, an X-ray detector, a cover, and at least one of a magnetic body and a magnet. The X-ray tube irradiates an object with X-rays. The X-ray detector detects X-rays that have passed through the object. The cover covers at least the X-ray tube and the X-ray detector. At least one of the magnetic body and the magnet is disposed on the cover.

Brief Description of the Drawings

[0008]

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Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of an X-ray diagnostic apparatus will be described with reference to the drawings. In the following, as an example of an X-ray diagnostic apparatus, a single-plane X-ray diagnostic apparatus having one C-arm will be described. However, the X-ray diagnostic apparatus may be applied to a bi-plane X-ray diagnostic apparatus having two C-arms, an X-ray television apparatus, an X-ray CT apparatus, and the like. Further, in the following description, components having substantially the same functions and configurations will be denoted by the same reference numerals, and duplicate descriptions will be made only when necessary. Further, in the following, a floor-standing X-ray diagnostic apparatus in which the imaging unit is supported by the floor surface will be described. However, the X-ray diagnostic apparatus may be a ceiling-suspended X-ray diagnostic apparatus in which a part of the imaging unit is suspended from the ceiling. Further, in this specification, the front side of the cover refers to the outer surface side of the cover exposed to the outside of the X-ray diagnostic apparatus 1, and the back side of the cover refers to the inner surface side of the cover not exposed to the outside of the X-ray diagnostic apparatus 1.

[0010] (First Embodiment) FIG. 1 is a block diagram showing an example of the configuration of an X-ray diagnostic apparatus 1 according to the first embodiment. As shown in FIG. 1, the X-ray diagnostic apparatus 1 according to the first embodiment includes an imaging unit 2, a bed 3, a drive unit 4, an X-ray high voltage device 5, an input interface 6, an output interface 7, a storage circuit 8, and a processing circuit 9. In the following description, the horizontal direction along the longitudinal direction of the bed 3 is defined as the Y-axis direction, the vertical direction is defined as the Z-axis direction, and the direction orthogonal to the Y-axis direction and the Z-axis direction is defined as the X-axis direction.

[0011] The imaging unit 2 is a device that images a subject P using X-rays. The imaging unit 2 includes an X-ray generator 21, an X-ray detector 22, and a holding device 23. The imaging unit 2 is covered with a cover 20 that forms the exterior of the imaging unit 2. The cover 20 is formed of, for example, a resin material.

[0012] In order to protect the X-ray diagnostic apparatus 1 from contamination by the body fluid or the like of the subject P, for example, when diagnosing or treating a cardiovascular disease of the subject P using a catheter, a sterilization cap is fixed to the X-ray diagnostic apparatus 1. In order to fix the sterilization cap to the X-ray diagnostic apparatus 1, a magnetic body 10 is disposed on the cover 20. By adsorbing a magnet to the magnetic body 10 with the sterilization cap sandwiched therebetween, the sterilization cap can be fixed to the X-ray diagnostic apparatus 1. The magnetic body 10 is formed of a metal material such as iron, for example. The arrangement position, number, shape, etc. of the magnetic body 10 will be described later. The treatment of the subject P using the catheter may be catheter ablation treatment. Catheter ablation treatment is one of the treatment methods for the heart. Catheter ablation treatment is a technique for searching for the occurrence site of arrhythmia and the accessory conduction pathway causing tachycardia, and applying high-frequency energy to the electrodes provided on the electrode catheter to cauterize a part of the myocardium. In catheter ablation treatment, a mapping system (not shown) detects the positions of the electrodes of the electrode catheter using an electromagnetic field. The mapping system generates a potential map based on the detected positions of the electrodes and the potentials detected by the electrodes. The potential map is an image that three-dimensionally shows the morphological information and potential information of the heart at the same time. The potential map is displayed on the display separately from the image taken using X-rays.

[0013] The X-ray generating device 21 is configured to generate X-rays. Specifically, the X-ray generating device 21 includes an X-ray tube 21a that irradiates the subject P with X-rays, and an X-ray diaphragm 21b for restricting the irradiation range of the X-rays irradiated from the X-ray tube 21a to the subject P. The X-ray tube 21a and the X-ray diaphragm 21b are each covered by a corresponding part of the cover 20.

[0014] The X-ray tube 21a is a vacuum tube that generates X-rays by irradiating thermoelectrons from the cathode (filament) toward the anode (target) by applying a high voltage from the X-ray high-voltage device 5 and supplying a filament current. In the X-ray tube 21a, X-rays are generated when the thermoelectrons collide with the target. The X-ray tube 21a includes, for example, a rotating anode type X-ray tube that generates X-rays by irradiating the rotating anode with thermoelectrons. The type of the X-ray tube 21a is not limited to the rotating anode type, and any type can be applied.

[0015] FIG. 2 is a side view showing a configuration example of the imaging unit 2 of the X-ray diagnostic apparatus 1 according to the embodiment. As shown in FIG. 2, a first magnetic body 10A, which is one of the magnetic bodies 10, is disposed on the cover 20 of the portion covering the X-ray tube 21a, that is, the cover 20 of the portion forming the exterior of the X-ray tube 21a. The cover 20 of the portion covering the X-ray tube 21a is an example of the cover 20 of the portion away from the X-ray detector 22 and the X-ray aperture 21b.

[0016] The X-ray aperture 21b is provided in front of the X-ray radiation window in the X-ray tube 21a. The X-ray aperture 21b has, for example, four aperture vanes made of a metal plate such as lead. The aperture vanes are driven by the driving unit 4 according to the region of interest input by the operator via the input interface 6. The X-ray aperture 21b adjusts the size of the region where the X-rays are shielded to an arbitrary size by sliding the aperture vanes by the driving unit 4. With the adjusted aperture vanes, the X-ray aperture 21b shields the X-rays outside the opening region. Thereby, the X-ray aperture 21b narrows down the X-rays generated by the X-ray tube 21a so as to irradiate the region of interest of the subject P.

[0017] As shown in FIG. 2, the X-ray aperture 21b is driven by the driving unit 4 and rotates in the direction of arrow a with the straight line connecting the focal point where the X-rays are generated in the X-ray tube 21a and the center of the X-ray detector 22 as the rotation axis. To rotate the X-ray aperture 21b, the driving unit 4 has, for example, a driving source such as a motor and a driving force transmission member such as a gear that transmits the driving force of the driving source to the X-ray aperture 21b inside the cover 20 of the portion covering the X-ray generating device 21.

[0018] The X-ray detector 22 detects X-rays generated by the X-ray tube 21a and transmitted through the subject P. The X-ray detector 22 is covered by a cover 20 of a portion corresponding to the X-ray detector 22. The X-ray detector 22 is, for example, an X-ray flat panel detector (hereinafter referred to as an FPD). The FPD has, for example, a plurality of semiconductor detection elements. The semiconductor detection elements include a direct conversion type that directly converts X-rays into electrical signals, and an indirect conversion type that converts X-rays into light with a phosphor and then converts the light into electrical signals. Any of these formats may be used for the FPD. The electrical signals generated by the plurality of semiconductor detection elements upon incidence of X-rays are output to an analog-to-digital converter (hereinafter referred to as an A / D converter) not shown. The A / D converter converts the electrical signals into digital data. The A / D converter outputs the digital data to the processing circuit 9. Note that an image intensifier may be used as the X-ray detector 22.

[0019] The holding device 23 has a C-arm 231. As shown in FIG. 2, the holding device 23 further includes a support portion 232, a connection portion 233, an arm holder 234, a support column portion 235, and a floor turning portion 236 in addition to the C-arm 231. The C-arm 231, the support portion 232, the connection portion 233, the arm holder 234, the support column portion 235, and the floor turning portion 236 are covered by a cover 20 of a portion corresponding to each of them.

[0020] The C-arm 231 has an arc shape. More specifically, the C-arm 231 has a semi-circular arc shape. The C-arm 231 supports the X-ray tube 21a at one end of the C-arm 231. The C-arm 231 supports the X-ray detector 22 at the other end of the C-arm 231 via the support portion 232 and the connection portion 233. The X-ray tube 21a and the X-ray detector 22 are attached to the C-arm 231 so as to face each other. In FIG. 2, one end of the C-arm 231 is the lower end and the other end of the C-arm 231 is the upper end, but the positions of the one end and the other end change according to the rotation and slide of the C-arm 231.

[0021] The support part 232 supports the X-ray detector 22. The support part 232 supports the X-ray detector 22 such that the source image distance (hereinafter referred to as SID), which corresponds to the distance between the X-ray tube 21a and the X-ray detector 22, can be changed. Specifically, the support part 232 supports the X-ray detector 22 so as to be slidable in the direction of arrow b along the Z-axis direction. The X-ray detector 22 is driven by the drive part 4 and slides in the direction of arrow b. In order to slide the X-ray detector 22 in the direction of arrow b, the drive part 4 has, for example, a drive source such as a motor and a driving force transmission member that converts the driving force of the drive source into a translational force and transmits it to the X-ray detector 22 inside the cover 20 of the part covering the support part 232. Further, the support part 232 supports the X-ray detector 22 so as to be rotatable in the direction of arrow c about a straight line connecting the focal point of the X-ray tube 21a described above and the central part of the X-ray detector 22 as a rotation axis. The X-ray detector 22 is driven by the drive part 4 and rotates in the direction of arrow c. In order to rotate the X-ray detector 22, the drive part 4 has, for example, a drive source such as a motor and a driving force transmission member that transmits the driving force of the drive source to the X-ray detector 22 inside the cover 20 of the part covering the support part 232.

[0022] As shown in FIG. 2, a second magnetic body 10B, which is one of the magnetic bodies 10, is arranged on the cover 20 of the part covering the support part 232, that is, the cover 20 forming the exterior of the support part 232. The cover 20 of the part covering the support part 232 is an example of the cover 20 of the part away from the X-ray detector 22 and the X-ray aperture 21b.

[0023] The connection part 233 connects the C-arm 231 and the support part 232 in the vicinity of the other end of the C-arm 231. As shown in FIG. 2, a third magnetic body 10C, which is one of the magnetic bodies 10, is arranged on the cover 20 of the part covering the connection part 233, that is, the cover 20 forming the exterior of the connection part 233. The cover 20 of the part covering the connection part 233 is an example of the cover 20 of the part away from the X-ray detector 22 and the X-ray aperture 21b.

[0024] The arm holder 234 supports the C-arm 231 so as to be slidable in the direction of arrow d in FIG. 2 along the arc shape of the C-arm 231. The central axis of the slide (i.e., rotation) of the C-arm 231 may be located on the isocenter, which is the site where X-rays are most intensively irradiated. The C-arm 231 is driven by the drive unit 4 to slide in the direction of arrow d. In order to slide the C-arm 231 in the direction of arrow d, the drive unit 4 has, for example, a drive source such as a motor and a driving force transmission member that transmits the driving force of the drive source to the C-arm 231 inside the cover 20 of the portion covering the arm holder 234.

[0025] The support column portion 235 supports the arm holder 234. Specifically, the support column portion 235 supports the arm holder 234 so as to be rotatable in the direction of arrow e in FIG. 2 around the rotation axis along the X-axis direction. The arm holder 234 is driven by the drive unit 4 to rotate in the direction of arrow e. In order to rotate the arm holder 234, the drive unit 4 has, for example, a drive source such as a motor and a driving force transmission member that transmits the driving force of the drive source to the arm holder 234 inside the cover 20 of the portion covering the support column portion 235.

[0026] The floor swivel portion 236 supports the support column portion 235 so as to be rotatable in the direction of arrow f in FIG. 2 around the rotation axis along the Z-axis direction. The support column portion 235 is driven by the drive unit 4 to rotate in the direction of arrow f. In order to rotate the support column portion 235, the drive unit 4 has, for example, a drive source such as a motor and a driving force transmission member that transmits the driving force of the drive source to the support column portion 235 inside the cover 20 of the portion covering the floor swivel portion 236. The floor swivel portion 236 is supported by the floor so as to be rotatable in the direction of arrow g in FIG. 2 around the rotation axis along the Z-axis direction.

[0027] Returning to FIG. 1, the drive unit 4 drives the imaging unit 2. Specifically, the drive unit 4 drives a plurality of drive sources that respectively generate driving forces in the directions of arrows a to g described above under the control of the processing circuit 9. The drive unit 4 may further drive the hospital bed 3.

[0028] The X-ray high voltage device 5 includes an electric circuit such as a transformer and a rectifier, a high voltage generator, and an X-ray control device. The high voltage generator has a function of generating a high voltage applied to the X-ray tube 21a and a filament current supplied to the X-ray tube 21a. The X-ray control device controls the output voltage according to the X-ray irradiated by the X-ray tube 21a. The high voltage generator may be of a transformer type or an inverter type. Note that the X-ray high voltage device 5 may be provided in the holding device 23.

[0029] The input interface 6 receives various instructions and information input operations from the operator. Specifically, the input interface 6 converts the input operation received from the operator into an electrical signal and outputs it to the processing circuit 9. For example, the input interface 6 is realized by a trackball, a switch button, a mouse, a keyboard, a touch pad that performs an input operation by touching the operation surface, a touch screen in which a display screen and a touch pad are integrated, a non-contact input circuit using an optical sensor, and a voice input circuit, etc. Note that the input interface 6 is not limited to those equipped with physical operation components such as a mouse and a keyboard. For example, an electrical signal processing circuit that receives an electrical signal corresponding to an input operation from an external input device provided separately from the device and outputs this electrical signal to the control circuit is also included in the examples of the input interface 6.

[0030] The output interface 7 outputs various information. For example, the output interface 7 includes a display. The display converts the information and image data sent from the processing circuit 9 into an electrical signal for display and outputs it. The display is realized by a liquid crystal monitor, a CRT (Cathode Ray Tube) monitor, and a touch panel, etc. The output interface 7 may include a speaker.

[0031] The memory circuit 8 is a non-volatile memory device that stores various types of information. For example, it can be a HDD (Hard Disk Drive), an optical disk, an SSD (Solid State Drive), an integrated circuit memory device, etc. The memory circuit 8 stores, for example, a control program for controlling the X-ray diagnostic apparatus 1 and various types of data used for executing this control program. In addition to HDDs and SSDs, etc., the memory circuit 8 can also be a drive device that reads and writes various types of information to and from portable storage media such as CDs (Compact Discs), DVDs (Digital Versatile Discs), and flash memories, or semiconductor memory elements such as RAM (Random Access Memory).

[0032] The processing circuit 9 is a circuit that controls the operation of the entire X-ray diagnostic apparatus 1 in response to an electrical signal of an input operation input from the input interface 6. For example, the processing circuit 9 includes an imaging control function 91.

[0033] Here, for example, the processing function executed by the imaging control function 91, which is a component of the processing circuit 9 shown in FIG. 1, is recorded in the memory circuit 8 in the form of a program executable by a computer. The processing circuit 9 is, for example, a processor. The processor constituting the processing circuit 9 reads a program from the memory circuit 8 and executes it to realize the function corresponding to the read program. In other words, the processing circuit 9 in the state of having read the program will have the functions shown in the processing circuit 9 of FIG. 1.

[0034] Note that in FIG. 1, the case where the processing function of the imaging control function 91 is realized by a single processing circuit 9 is shown, but the embodiment is not limited to this. For example, the processing circuit 9 can be configured by combining a plurality of independent processors, and each processor can execute each program to realize the processing function of the imaging control function 91. Also, the processing functions of the processing circuit 9 may be appropriately distributed or integrated into single or multiple processing circuits and realized.

[0035] The imaging control function 91 controls the imaging operation of the subject P by the imaging unit 2 based on an input operation received from an operator via the input interface 6, for example. The imaging control function 91 controls the imaging operation of the subject P by controlling the drive unit 4, the X-ray high voltage device 5, the X-ray generator 21, the output interface 7, etc. More specifically, the imaging control function 91 reads out the control program stored in the storage circuit 8 and expands it onto the memory in the processing circuit 9, and controls each part of the X-ray diagnostic apparatus 1 according to the expanded control program. Further, the imaging control function 91 generates image data based on the output from the X-ray detector 22. The image data is data of medical images including fluoroscopic images and radiographic images regarding the subject P. The imaging control function 91 causes the generated image data to be displayed on the output interface 7.

[0036] Next, an arrangement example of the magnetic body 10 will be described. FIG. 3 is a cross-sectional view showing an arrangement example of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 3 is a common arrangement example for the first magnetic body 10A, the second magnetic body 10B, and the third magnetic body 10C. In the example shown in FIG. 3, the magnetic body 10 is arranged on the back side, that is, the inner surface side of the cover 20. Further, in the example shown in FIG. 3, the magnetic body 10 is provided in contact with the back surface 20a, that is, the inner surface of the cover 20. The thickness of the magnetic body 10 may be thinner than the thickness of the cover 20. The magnetic body 10 may be joined to the back surface 20a of the cover 20 by a joining method such as adhesion using an adhesive, screwing, and integral molding.

[0037] FIG. 4 is a side view showing an arrangement example of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the embodiment. In the example shown in FIG. 4, the second magnetic body 10B is disposed on the back side of the cover 20 of the portion covering the support portion 232. More specifically, in the example shown in FIG. 4, the second magnetic body 10B is disposed along the side surface 20b of the cover 20 of the portion covering the support portion 232. The side surface 20b is a surface along the XZ plane. More specifically, the second magnetic body 10B is disposed along the edge of the side surface 20b of the cover 20 of the portion covering the support portion 232. More specifically, the second magnetic body 10B is continuously disposed along the edge of the side surface 20b of the cover 20 of the portion covering the support portion 232.

[0038] Also, in the example shown in FIG. 4, the third magnetic body 10C is also disposed on the back side of the cover 20 of the portion covering the connection portion 233. More specifically, in the example shown in FIG. 4, the third magnetic body 10C is disposed along the side surface 20b of the cover 20 of the portion covering the connection portion 233. More specifically, the third magnetic body 10C is disposed along the edge of the side surface 20b of the cover 20 of the portion covering the connection portion 233. More specifically, the third magnetic body 10C is continuously disposed along the edge of the side surface 20b of the cover 20 of the portion covering the connection portion 233.

[0039] FIG. 5 is another side view showing an arrangement example of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the embodiment. In the example shown in FIG. 5, the first magnetic body 10A is also disposed on the back side of the cover 20 of the portion covering the X-ray tube 21a. More specifically, in the example shown in FIG. 5, the first magnetic body 10A is disposed along the side surface 20b of the cover 20 of the portion covering the X-ray tube 21a. More specifically, the first magnetic body 10A is disposed along the edge of the side surface 20b of the cover 20 of the portion covering the X-ray tube 21a. More specifically, the first magnetic body 10A is continuously disposed along the edge of the side surface 20b of the cover 20 of the portion covering the X-ray tube 21a.

[0040] FIG. 6 is a cross-sectional view showing a fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 6 is a common arrangement example for the first magnetic body 10A, the second magnetic body 10B, and the third magnetic body 10C. When fixing the sterilization cap 11 to the X-ray diagnostic apparatus 1 having the above configuration, as shown in FIG. 6, the sterilization cap 11 is placed on the X-ray diagnostic apparatus 1 so as to cover the cover 20 of the portion where the magnetic body 10 is arranged. The configuration of the sterilization cap 11 may be a flexible transparent bag-like configuration in which rubber is provided at the opening, as in the conventional case. Then, the sterilization cap 11 is fixed to the X-ray diagnostic apparatus 1 by attracting the magnet 12 to the magnetic body 10 with the sterilization cap 11 and the cover 20 interposed therebetween. The magnet 12 is, for example, a permanent magnet. The thickness, that is, the height of the magnet 12 is preferably 2 cm or less so that the magnet 12 does not interfere with the X-ray diagnostic apparatus 1. The X-ray diagnostic apparatus 1 in a state where the magnet 12 is attracted to the magnetic body 10 with the sterilization cap 11 and the cover 20 interposed therebetween is an example of an X-ray diagnostic system.

[0041] FIG. 7 is a side view showing a fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the embodiment. In the example shown in FIG. 7, a first sterilization cap 11A, which is one of the sterilization caps 11, covers the X-ray detector 22, the support portion 232, and a part of the connection portion 233, and is fixed to the cover 20 of the portion covering the support portion 232 and the cover 20 of the portion covering the connection portion 233. More specifically, in the example shown in FIG. 7, the first sterilization cap 11A is fixed to the side surface 20b of the cover 20 of the portion covering the support portion 232 by the attractive force between the second magnetic body 10B arranged on the back side of the side surface 20b of the cover 20 of the portion covering the support portion 232 and the magnet 12 arranged to face the second magnetic body 10B. Further, in the example shown in FIG. 7, the first sterilization cap 11A is also fixed to the side surface 20b of the cover 20 of the portion covering the connection portion 233 by the attractive force between the third magnetic body 10C arranged on the back side of the side surface 20b of the cover 20 of the portion covering the connection portion 233 and the magnet 12 arranged to face the third magnetic body 10C.

[0042] FIG. 8 is another side view showing the fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the embodiment. In the example shown in FIG. 8, a second sterilization cap 11B, which is one of the sterilization caps 11, is fixed to a cover 20 of a portion covering the X-ray tube 21a in a state of covering the X-ray aperture 21b and a part of the X-ray tube 21a. More specifically, in the example shown in FIG. 8, the second sterilization cap 11B is fixed to the side surface 20b of the cover 20 of the portion covering the X-ray tube 21a by the attractive force between a first magnetic body 10A disposed on the back side of the side surface 20b of the cover 20 of the portion covering the X-ray tube 21a and a magnet 12 disposed opposite to the first magnetic body 10A.

[0043] As described above, the X-ray diagnostic apparatus 1 according to the embodiment includes a magnetic body 10 disposed on a cover 20 that covers at least the X-ray tube 21a and the X-ray detector 22.

[0044] Thereby, by adsorbing the magnet 12 to the magnetic body 10 with the sterilization cap 11 sandwiched therebetween, the sterilization cap 11 can be appropriately fixed to the X-ray diagnostic apparatus 1. Further, even when there is no stepped portion where the sterilization cap 11 can be hooked near the portion to be covered by the sterilization cap 11 (for example, the X-ray detector 22), it is not necessary to cover a wide range up to the stepped portion away from the portion to be covered, and the sterilization cap 11 can be easily fixed. Further, since it is not necessary to fix the sterilization cap 11 to a movable portion having a stepped portion, entanglement of the sterilization cap 11 with the movable portion can be reduced. Further, since entanglement of the sterilization cap 11 with the movable portion can be reduced, it is not necessary to limit the operation of the movable portion to reduce entanglement. Further, since it is not necessary to provide the cover 20 with steep uneven portions where the sterilization cap 11 such as a hook mechanism can be hooked, retention of body fluid or the like on the uneven portions can be avoided. Since retention of body fluid or the like on the uneven portions can be avoided, the cleanability of the X-ray diagnostic apparatus 1 can be improved.

[0045] Further, in the embodiment, the magnetic body 10 is disposed on the back side of the cover 20.

[0046] As a result, it is possible to avoid the magnetic body 10 from forming uneven portions on the surface of the cover 20, so that the cleanability of the X-ray diagnostic apparatus 1 can be further improved.

[0047] In addition, in the embodiment, the magnetic body 10 is disposed on the cover 20 of a portion away from the X-ray detector 22 and the X-ray aperture 21b. That is, the magnetic body 10 is disposed on the cover 20 of a portion away from the subject P on the bed 3.

[0048] As a result, the influence exerted by the magnetic body 10 on the system using the magnetic field can be reduced. For example, when performing the catheter ablation treatment described above, the magnetic body 10 can be disposed away from the electrode catheter inserted into the subject P on the bed 3. Since the magnetic body 10 can be disposed away from the electrode catheter, the influence exerted by the magnetic body 10 on the mapping system that detects the position of the electrode of the electrode catheter using the electromagnetic field can be reduced.

[0049] In addition, in the embodiment, the magnetic body 10 (that is, the second magnetic body 10B) is disposed on the cover 20 of a portion covering the support portion 232.

[0050] As a result, the magnetic body 10 can be appropriately disposed on the cover 20 of a portion away from the X-ray detector 22 and the X-ray aperture 21b, so that the influence exerted by the magnetic body 10 on the system using the magnetic field can be appropriately reduced. In addition, the sterilization cap 11A covering the X-ray detector 22 can be easily fixed to the cover 20 of the portion covering the support portion 232. Since the sterilization cap 11A can be fixed to the cover 20 of the portion covering the support portion 232, it is not necessary to cover a wide range up to a position away from the X-ray detector 22 (for example, the arm holder 234) with the sterilization cap 11A in order to hook the sterilization cap 11A. As a result, the entanglement of the sterilization cap 11A with the C-arm 231 and the operation limitation of the C-arm 231 for preventing the entanglement can be reduced.

[0051] In addition, in the embodiment, the magnetic body 10 (i.e., the third magnetic body 10C) is also disposed on the cover 20 of the portion covering the connection portion 233.

[0052] Thereby, the sterilization cap 11A covering the X-ray detector 22 can be easily fixed to the cover 20 of the portion covering the connection portion 233. Since the sterilization cap 11A can be fixed to the cover 20 of the portion covering the connection portion 233, it is not necessary to cover a wide range up to a position away from the X-ray detector 22 in order to hook the sterilization cap 11A.

[0053] In addition, in the embodiment, the magnetic body 10 (i.e., the first magnetic body 10A) is also disposed on the cover 20 of the portion covering the X-ray tube 21a.

[0054] Thereby, the sterilization cap 11B covering the X-ray aperture 21b can be easily fixed to the cover 20 of the portion covering the X-ray tube 21a. Since the sterilization cap 11B can be fixed to the cover 20 of the portion covering the X-ray tube 21a, it is not necessary to cover a wide range up to a position away from the X-ray aperture 21b in order to hook the sterilization cap 11B.

[0055] In addition, in the embodiment, the magnetic body 10 is disposed along the side surface 20b of the cover 20.

[0056] Thereby, by disposing the magnetic body 10 at a position where the sterilization cap 11 can be easily fixed, the ease of the fixing operation of the sterilization cap 11 can be improved.

[0057] In addition, in the embodiment, the magnetic body 10 is disposed along the edge of the side surface 20b of the cover 20.

[0058] Thereby, compared with the case where the magnetic body 10 is disposed over the entire surface of the side surface 20b of the cover 20, the influence of the magnetic body 10 on the system using the magnetic field can be effectively reduced, and the cost can be reduced.

[0059] In addition, in the embodiment, the magnetic body 10 is continuously arranged along the edge of the side surface 20b of the cover 20.

[0060] Thereby, the adsorbability of the magnet 12 to the magnetic body 10 can be improved, so that the sterilization cap 11 can be stably fixed to the X-ray diagnostic apparatus 1.

[0061] (First Modification Example) Next, a first modification example in which the surplus portion of the sterilization cap 11 is also fixed will be described centering on the differences from the above-described embodiment.

[0062] FIG. 9 is a cross-sectional view showing the fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the first modification example of the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 9 is a common arrangement example for the above-described first magnetic body 10A, second magnetic body 10B, and third magnetic body 10C. In the example shown in FIG. 9, the magnet 12A fixes the sterilization cap 11 together with the surplus portion 11a in a state where the surplus portion 11a of the sterilization cap 11 is folded to the cover 20. That is, in the example shown in FIG. 9, the magnet 12A is adsorbed to the magnetic body 10 with the surplus portion 11a, the sterilization cap 11 of the portion adjacent to the surplus portion 11a, and the cover 20 interposed therebetween.

[0063] As described above, in the first modification example, the surplus portion 11a of the sterilization cap 11 is fixed to the cover 20. Thereby, contact between the surplus portion 11a and the bed 3 can be avoided and the convenience during use of the X-ray diagnostic apparatus 1 can be improved.

[0064] (Second Modification Example) Next, a second modification example in which a recess for fitting the magnetic body 10 is provided on the back surface of the cover 20 will be described centering on the differences from the above-described embodiment.

[0065] FIG. 10 is a cross-sectional view showing the arrangement of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the second modification of the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 10 is a common arrangement example for the above-described first magnetic body 10A, second magnetic body 10B, and third magnetic body 10C. In the example shown in FIG. 10, a recess 20c for fitting the magnetic body 10 is provided on the back surface 20a of the cover 20. The magnetic body 10 is joined and fixed to the cover 20 in a state of being fitted into the recess 20c.

[0066] As described above, in the second modification, the magnetic body 10 is arranged in the recess 20c provided on the back surface 20a of the cover 20. Thereby, since the magnetic body 10 can be arranged closer to the surface of the cover 20 (that is, the side surface 20b), the adsorptivity of the magnet 12 to the magnetic body 10 can be improved, and the sterilization cap 11 can be more stably fixed to the X-ray diagnostic apparatus 1. In the following modifications, the side surface 20b of the cover 20 may also be referred to as the surface 20b (that is, the outer surface) of the cover 20.

[0067] (Third Modification) Next, a third modification in which the magnetic body 10 is arranged between the front surface 20b and the back surface 20a of the cover 20 will be described centering on the differences from the above-described embodiment.

[0068] FIG. 11 is a cross-sectional view showing the arrangement of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the third modification of the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 11 is a common arrangement example for the above-described first magnetic body 10A, second magnetic body 10B, and third magnetic body 10C. In the example shown in FIG. 11, the magnetic body 10 is arranged between the front surface 20b and the back surface 20a of the cover 20. More specifically, in the example shown in FIG. 11, the magnetic body 10 is embedded inside the cover 20. The magnetic body 10 may be integrally formed with the cover 20.

[0069] FIG. 12 is a cross-sectional view showing another arrangement of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the third modification of the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 12 is a common arrangement example for the above-described first magnetic body 10A, second magnetic body 10B, and third magnetic body 10C. Instead of the arrangement of the magnetic body 10 shown in FIG. 11, the magnetic body 10 may be arranged as shown in FIG. 12. In the example shown in FIG. 12, a recess 20e is provided at the end face 20d of the cover 20 that connects the front surface 20b and the back surface 20a so as to be located between the front surface 20b and the back surface 20a. The magnetic body 10 is arranged between the front surface 20b and the back surface 20a by being inserted into the recess 20e from the opening of the recess 20e located at the end face 20d.

[0070] As described above, in the third modification, the magnetic body 10 is arranged between the front surface 20b and the back surface 20a of the cover 20. Thereby, similarly to the second modification, the magnetic body 10 can be arranged closer to the front surface 20b of the cover 20, so that the sterilization cap 11 can be fixed to the X-ray diagnostic apparatus 1 more stably.

[0071] (Fourth Modification) Next, a fourth modification in which the magnetic body 10 is arranged on the front side of the cover 20 will be described centering on the differences from the above-described embodiment.

[0072] FIG. 13 is a cross-sectional view showing the arrangement of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the fourth modification of the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 13 is a common arrangement example for the above-described first magnetic body 10A, second magnetic body 10B, and third magnetic body 10C. In the example shown in FIG. 13, the magnetic body 10 is arranged on the front side of the cover 20, that is, the outer surface side. Further, in the example shown in FIG. 13, the magnetic body 10 is provided in contact with the front surface 20b, that is, the outer surface of the cover 20. The magnetic body 10 may be joined to the front surface 20b of the cover 20 by a joining method such as adhesion using an adhesive, screwing, and integral molding.

[0073] As described above, in the fourth modification, the magnetic body 10 is disposed on the surface 20b of the cover 20. Thereby, the attracting force of the magnet 12 to the magnetic body 10 can be further improved, so that the sterilization cap 11 can be more stably fixed to the X-ray diagnostic apparatus 1.

[0074] (Fifth Modification) Next, a fifth modification in which the magnetic body 10 is intermittently disposed along the edge of the side surface 20b of the cover 20 will be described centering on the differences from the above-described embodiments.

[0075] FIG. 14 is a side view showing the arrangement of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the fifth modification of the embodiment. In FIG. 4, an example in which the magnetic body 10 is continuously disposed along the edge of the side surface 20b of the cover 20 has been described. On the other hand, in the example shown in FIG. 14, the magnetic body 10 is intermittently disposed along the edge of the side surface 20b of the cover 20. More specifically, in the example shown in FIG. 14, the second magnetic body 10B is intermittently disposed along the edge of the side surface 20b of the cover 20 at a portion covering the support portion 232. Further, in the example shown in FIG. 14, the third magnetic body 10C is intermittently disposed along the edge of the side surface 20b of the cover 20 at a portion covering the connecting portion 233. Also, the first magnetic body 10A (not shown) may be intermittently disposed along the edge of the side surface 20b of the cover 20 at a portion covering the X-ray tube 21a.

[0076] Note that, in the example shown in FIG. 14, the magnetic bodies 10 (10A to 10C) are disposed on the back surface 20a of the cover 20 as shown in FIG. 3. The present invention is not limited to such an arrangement example, and the magnetic body 10 may be disposed between the front surface 20b and the back surface 20a of the cover 20 as shown in FIGS. 11 and 12, or may be disposed on the front surface 20b of the cover 20 as shown in FIG. 13.

[0077] As described above, in the fifth modification, the magnetic body 10 is intermittently arranged along the edge of the side surface 20b of the cover 20. Thereby, compared with the case where the magnetic body 10 is continuously arranged along the edge of the side surface 20b of the cover 20, the influence of the magnetic body 10 on the system using the magnetic field can be effectively reduced, and the cost can be reduced.

[0078] (Sixth Modification Example) Next, a sixth modification example in which the magnetic body 10 is arranged in a strip shape along the central portion of the side surface 20b of the cover 20 will be described centering on the differences from the above-described embodiments.

[0079] FIG. 15 is a side view showing the arrangement of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the sixth modification example of the embodiment. FIG. 16 is another side view showing the arrangement of the magnetic body 10 in the X-ray diagnostic apparatus 1 according to the sixth modification example of the embodiment. In the examples shown in FIGS. 15 and 16, the magnetic body 10 is arranged in a strip shape along the central portion of the side surface 20b of the cover 20. More specifically, in the example shown in FIG. 15, the second magnetic body 10B is arranged in a strip shape along the central portion of the side surface 20b of the cover 20 that covers the support portion 232. Further, in the example shown in FIG. 15, the third magnetic body 10C is arranged in a strip shape along the central portion of the side surface 20b of the cover 20 that covers the connection portion 233. In the example shown in FIG. 16, the first magnetic body 10A is arranged in a strip shape along the central portion of the side surface 20b of the cover 20 that covers the X-ray tube 21a.

[0080] In the examples shown in FIGS. 15 and 16, the magnetic bodies 10 (10A to 10C) are arranged in a continuous strip shape, but the magnetic bodies 10 may be arranged in an intermittent strip shape. Further, in the examples shown in FIGS. 15 and 16, the magnetic body 10 is arranged on the back surface 20a of the cover 20 as shown in FIG. 3. The arrangement is not limited to such an example, and the magnetic body 10 may be arranged between the front surface 20b and the back surface 20a of the cover 20 as shown in FIGS. 11 and 12, or may be arranged on the front surface 20b of the cover 20 as shown in FIG. 13.

[0081] As described above, in the sixth modification, the magnetic body 10 is arranged in a strip shape along the central portion of the side surface 20b of the cover 20. Thereby, compared with the case where the magnetic body 10 is arranged over the entire side surface 20b of the cover 20, the influence of the magnetic body 10 on the system using the magnetic field can be effectively reduced, and the cost can be reduced.

[0082] (Seventh Modification) Next, a seventh modification for indicating the position of the magnetic body 10 arranged inside the cover 20 with respect to the surface 20b to the operator (that is, the user) will be described centering on the differences from the above-described embodiments.

[0083] FIG. 17 is a side view showing the arrangement of the magnetic body 10 and the display unit 24 in the X-ray diagnostic apparatus 1 according to the seventh modification of the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 17 is a common arrangement example for the above-described first magnetic body 10A, second magnetic body 10B, and third magnetic body 10C. In the example shown in FIG. 17, the magnetic body 10 is arranged inside the cover 20 with respect to the surface 20b. For example, as shown in FIGS. 3 and 10, the magnetic body 10 may be arranged on the back side of the cover 20. Further, as shown in FIGS. 11 and 12, the magnetic body 10 may be arranged between the surface 20b and the back surface 20a of the cover 20. In the example shown in FIG. 17, on the surface 20b of the cover 20, a display unit 24 for indicating the arrangement position of the magnetic body 10 to the operator is provided along the magnetic body 10. The display unit 24 may be configured by a pattern having a color different from the color of the surface 20b of the cover 20, for example. The display unit 24 may include components other than patterns such as characters.

[0084] As described above, in the seventh modification, the X-ray diagnostic apparatus 1 further includes a display unit 24 arranged on the surface 20b of the cover 20 for indicating the arrangement position of the magnetic body 10 to the operator. Thereby, the operator can easily grasp the arrangement position of the magnetic body 10 by the display unit 24, so that the ease of the fixing operation of the sterilization cap 11 can be further improved.

[0085] (Eighth Modification) Next, a description will be given centering on the differences from the above-described embodiments regarding an eighth modification in which the magnetic body 10 is arranged facing the curved surface portion of the cover 20.

[0086] FIG. 18 is a cross-sectional view showing the fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the eighth modification of the embodiment. FIG. 19 is a side view showing the fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the eighth modification of the embodiment. Heretofore, an example in which the side surface 20b of the cover 20 is a flat surface has been described. In contrast, as shown in FIG. 18, in the eighth modification, the side surface 20b of the cover 20 in the portion covering the X-ray tube 21a has a curved surface portion 201. The curved surface portion 201 is a curved surface having a curved shape in a cross section along the rotation direction of the X-ray aperture 21b (that is, the direction of arrow a). In the example shown in FIG. 18, the cross section of the curved surface portion 201 has a waveform, that is, a sine curve shape. In FIG. 19, the convex portions of the arc-shaped unevenness constituting the curved surface portion 201 are emphasized and shown. Also, as shown in FIGS. 18 and 19, in the eighth modification, the first magnetic body 10A is arranged facing the curved surface portion 201. In order to appropriately adsorb the magnet 12 to the first magnetic body 10A on the curved surface portion 201, as shown in FIG. 18, the cross section of the magnet 12 arranged facing the first magnetic body 10A has a curved shape along the curved shape of the cross section of the curved surface portion 201.

[0087] A curved surface portion 201 having a curved shape in a cross section along the rotation direction of the X-ray detector 22 (the direction of arrow c in FIG. 2) may also be provided on the side surface 20b of the cover 20 in the portion covering the support portion 232. In this case, the second magnetic body 10B may be arranged facing the curved surface portion 201 of the cover 20 in the portion covering the support portion 232. Also, in the example shown in FIGS. 18 and 19, the magnetic body 10 is arranged on the back surface 20a of the cover 20. The magnetic body 10 is not limited to such a configuration, and may be arranged between the front surface 20b and the back surface 20a of the cover 20 as shown in FIGS. 11 and 12.

[0088] As described above, in the eighth modification, the side surface 20b of the cover 20 of the portion covering the X-ray tube 21a has a curved surface portion 201 having a curved shape in a cross section along the rotation direction of the X-ray aperture 21b. The first magnetic body 10A is disposed to face the curved surface portion 201. Thereby, as shown by the arrow h in FIG. 18, a tensile force having a lifting direction component h1 of the magnet 12 can be applied to the second sterilization cap 11B in accordance with the rotation of the X-ray aperture 21b. That is, according to the eighth modification, by providing the curved surface portion 201 on the side surface 20b of the cover 20 of the portion covering the X-ray tube 21a, the tensile force of the rotation direction component h2 of the X-ray aperture 21b can be relaxed.

[0089] The attracting force of the magnet 12 is highly stable against an external force in the direction of lifting the magnet 12 (that is, the direction against the attracting force), and is less stable against an external force in a direction orthogonal to the direction of lifting the magnet 12. Therefore, by relaxing the tensile force of the rotation direction component f2 of the X-ray aperture 21b (that is, the external force in the direction orthogonal to the direction of lifting the magnet 12), it is possible to suppress a decrease in the stability of the attracting force of the magnet 12 as the X-ray aperture 21b rotates. By suppressing a decrease in the stability of the attracting force of the magnet 12, it is possible to reduce the displacement of the second sterilization cap 11B as the X-ray aperture 21b rotates.

[0090] Similarly, according to the eighth modification, by providing the curved surface portion 201 on the side surface 20b of the cover 20 of the portion covering the X-ray detector 22, the tensile force of the rotation direction component of the X-ray detector 22 acting on the first sterilization cap 11A can be relaxed. By relaxing the tensile force of the rotation direction component of the X-ray detector 22, it is possible to reduce the displacement of the first sterilization cap 11A as the X-ray detector 22 rotates.

[0091] Therefore, according to the eighth modification, by disposing the magnetic body 10 to face the curved surface portion 201 of the cover 20, the fixing stability of the sterilization cap 11 can be further improved.

[0092] As long as a tensile force having a component h1 in the direction of lifting the magnet 12 can be applied to the sterilization cap 11, it is desirable that the shape of the curved surface portion 201 is smooth. By making the shape of the curved surface portion 201 smooth, it is possible to effectively suppress the retention of body fluids and the like in the concave portion of the curved surface portion 201 and maintain good cleanability.

[0093] (The ninth modification example) Next, a ninth modification example in which the magnet 12 is arranged in a wave shape along the curved surface portion 201 will be described centering on the differences from the above-described embodiments.

[0094] FIG. 20 is a cross-sectional view showing a fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the ninth modification example of the embodiment. The arrangement example of the magnetic body 10 shown in FIG. 20 is a common arrangement example for the first magnetic body 10A, the second magnetic body 10B, and the third magnetic body 10C described above. In the example shown in FIG. 20, the magnet 12 is arranged so as to have a wave shape along the curved surface portion 201. The magnet 12 may be a sheet-shaped magnet 12 having no flexibility, or may be a sheet-shaped magnet 12 having flexibility. The flexible magnet 12 may be, for example, a rubber magnet formed by mixing magnetic powder with synthetic rubber. In the example shown in FIG. 20, the magnetic body 10 is arranged on the back surface 20a of the cover 20. The magnetic body 10 is not limited to such an arrangement example, and may be arranged between the front surface 20b and the back surface 20a of the cover 20 as shown in FIGS. 11 and 12.

[0095] According to the ninth modification example, by arranging the magnet 12 in a wave shape along the curved surface portion 201, the adsorption force of the magnet 12 to the magnetic body 10 can be improved. Thereby, the stability of the fixation of the sterilization cap 11 can be further improved.

[0096] (The tenth modification example) Next, a tenth modification example in which the curved surface portion 201 has a curved shape in a cross section along each of a plurality of moving directions of the X-ray detector 22 will be described centering on the differences from the above-described embodiments.

[0097] FIG. 21 is a side view showing a fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the tenth modification of the embodiment. In the example shown in FIG. 21, the curved surface portion 201 is provided on the side surface 20b of the cover 20 of the portion covering the connection portion 233. The curved surface portion 201 has a curved shape in a cross section along the rotation direction of the X-ray detector 22 (that is, the direction of arrow c). Further, the curved surface portion 201 also has a curved shape in a cross section along the slide direction of the X-ray detector 22 (that is, the direction of arrow b). The curved surface portion 201 having a curved shape with respect to the cross sections in such two directions has a shape of a plurality of dots when viewed from a direction orthogonal to the side surface 20b of the cover 20 as shown in FIG. 21. The third magnetic body 10C is disposed to face the curved surface portion 201 of the connection portion 233.

[0098] As described above, in the tenth modification, the side surface 20b of the cover 20 of the portion covering the connection portion 233 has a curved shape in a cross section along each of the rotation direction and the slide direction of the X-ray detector 22. Thereby, when the X-ray detector 22 rotates, the tensile force of the first sterilization cap 11A in the rotation direction component of the X-ray detector 22 can be relaxed, so that the displacement of the first sterilization cap 11A accompanying the rotation of the X-ray detector 22 can be reduced. Further, when the X-ray detector 22 slides, the tensile force of the first sterilization cap 11A in the slide direction component of the X-ray detector 22 can be relaxed, so that the displacement of the first sterilization cap 11A accompanying the slide of the X-ray detector 22 can be reduced. Therefore, according to the tenth modification, the stability of the fixation of the sterilization cap 11 can be further improved.

[0099] (Eleventh Modification) Next, a description will be given focusing on the differences from the above-described embodiment regarding the eleventh modification in which the magnetic body 10 is adsorbed to the magnet 12 disposed on the cover 20 with the sterilization cap 11 interposed therebetween.

[0100] FIG. 22 is a cross-sectional view showing the fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the 11th modification of the embodiment. So far, the example of adsorbing the magnet 12 to the magnetic body 10 disposed on the cover 20 with the sterilization cap 11 interposed therebetween has been described. On the other hand, in the example shown in FIG. 22, the magnet 12 is disposed on the cover 20. Further, in the example shown in FIG. 22, the sterilization cap 11 is fixed to the X-ray diagnostic apparatus 1 by adsorbing the magnetic body 10 to the magnet 12 disposed on the cover 20 with the sterilization cap 11 and the cover 20 interposed therebetween. That is, in the example shown in FIG. 22, the positional relationship between the magnetic body 10 and the magnet 12 is reversed with respect to the positional relationship between the magnetic body 10 and the magnet 12 in each of the above-described embodiments. In the example shown in FIG. 22, the magnet 12 may be a permanent magnet or an electromagnet. When the magnet 12 is constituted by an electromagnet, the processing circuit 9 may have a control function for controlling energization to the electromagnet. The control function may control energization to the electromagnet 12 based on an electrical signal of an input operation received by the input interface 6.

[0101] In the example shown in FIG. 22, the magnet 12 is disposed on the back surface 20a of the cover 20. The magnet 12 is not limited to such an arrangement example, and may be disposed between the front surface 20b and the back surface 20a of the cover 20 or on the front surface 20b of the cover 20.

[0102] According to the 11th modification, the sterilization cap 11 can be appropriately fixed to the X-ray diagnostic apparatus 1 by adsorbing the magnetic body 10 to the magnet 12 disposed on the cover 20 with the sterilization cap 11 interposed therebetween.

[0103] (12th modification) Next, a 12th modification in which another magnet 12B is adsorbed to the magnet 12 disposed on the cover 20 with the sterilization cap 11 interposed therebetween will be described centering on the differences from the above-described embodiments.

[0104] FIG. 23 is a cross-sectional view showing the fixed state of the sterilization cap 11 to the X-ray diagnostic apparatus 1 according to the twelfth modification of the embodiment. In the example shown in FIG. 23, the magnet 12 is disposed on the cover 20 as in FIG. 22. Also, in the example shown in FIG. 23, the sterilization cap 11 is fixed to the X-ray diagnostic apparatus 1 by attracting another magnet 12B to the magnet 12 disposed on the cover 20 with the sterilization cap 11 and the cover 20 interposed therebetween. In the example shown in FIG. 23, the magnet 12 is disposed on the back surface 20a of the cover 20. The magnet 12 is not limited to such an arrangement example, and may be disposed between the front surface 20b and the back surface 20a of the cover 20. The configuration of fixing the sterilization cap 11 using the attractive force between the two magnets 12 and 12B can be appropriately combined with each of the above-described embodiments. For example, both the magnet 12 and the magnetic body 10 may be disposed on the cover 20.

[0105] According to the twelfth modification, the sterilization cap 11 can be appropriately fixed to the X-ray diagnostic apparatus 1 by attracting another magnet 12B to the magnet 12 disposed on the cover 20 with the sterilization cap 11 interposed therebetween.

[0106] Note that the term "processor" used in the above description means, for example, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or a circuit such as an application specific integrated circuit (ASIC), a programmable logic device (for example, a simple programmable logic device (SPLD), a complex programmable logic device (CPLD), and a field programmable gate array (FPGA)). The processor realizes its functions by reading and executing a program stored in a storage circuit. Note that, instead of storing a program in the storage circuit, the program may be directly incorporated into the circuit of the processor. In this case, the processor realizes its functions by reading and executing the program incorporated into the circuit. Note that the processor is not limited to being configured as a single circuit of the processor, and a plurality of independent circuits may be combined to be configured as one processor to realize its functions. Further, a plurality of components in FIG. 1 may be integrated into one processor to realize its functions.

[0107] According to at least one embodiment described above, a protective cap can be appropriately fixed to the X-ray diagnostic apparatus.

[0108] As described above, several embodiments have been described. However, these embodiments are presented only as examples and are not intended to limit the scope of the invention. The novel apparatus and method described in this specification can be implemented in various other forms. Also, various omissions, substitutions, and changes can be made to the forms of the apparatus and method described in this specification without departing from the gist of the invention. The scope of the appended claims and equivalents thereto are intended to include such forms and modifications included in the scope and gist of the invention.

Explanation of Symbols

[0109] 1 X-ray diagnostic apparatus 10 Magnetic body 10A First magnetic body 10B Second magnetic body 10C Third magnetic body 11 Sterilization cap 11A First sterilization cap 11B Second sterilization cap 12 Magnet 20 Cover 20a Back surface 20b Side surface 21a X-ray tube 21b X-ray aperture 22 X-ray detector 232 Support part 233 Connection part

Claims

1. An X-ray tube that irradiates an object with X-rays, an X-ray detector that detects X-rays transmitted through the object, a cover that covers at least the X-ray tube and the X-ray detector, and at least one of a magnetic body and a magnet disposed on the cover. An X-ray diagnostic apparatus comprising the above.

2. The X-ray diagnostic apparatus according to claim 1, wherein at least one of the magnetic body and the magnet is disposed on the back side of the cover.

3. The X-ray diagnostic apparatus according to claim 1, wherein at least one of the magnetic body and the magnet is disposed between the front surface and the back surface of the cover.

4. The X-ray diagnostic apparatus according to claim 1, wherein at least one of the magnetic body and the magnet is disposed on the front side of the cover.

5. The X-ray diagnostic apparatus according to claim 1, further comprising a display unit disposed on the front surface of the cover for indicating to the user the arrangement position of at least one of the magnetic body and the magnet.

6. Further comprising an X-ray aperture for restricting the irradiation range of the X-rays irradiated from the X-ray tube to the object, The X-ray diagnostic apparatus according to claim 1, wherein at least one of the magnetic body and the magnet is disposed on the cover at a portion away from the X-ray detector and the X-ray aperture.

7. Further comprising a support unit for supporting the X-ray detector, the cover further covers the support unit, The X-ray diagnostic apparatus according to claim 6, wherein the cover at a portion away from the X-ray detector and the X-ray aperture includes the cover at the portion covering the support unit.

8. An arc-shaped C-arm that supports the X-ray tube at one end and supports the support unit at the other end, and a connecting portion that connects the C-arm and the support unit in the vicinity of the other end of the C-arm. The cover further covers the connecting portion, The X-ray diagnostic apparatus according to claim 7, wherein the cover at a portion away from the X-ray detector and the X-ray aperture further includes the cover at the portion covering the connecting portion.

9. The X-ray diagnostic apparatus according to claim 6, wherein the cover at a portion away from the X-ray detector and the X-ray aperture includes the cover at the portion covering the X-ray tube.

10. The X-ray diagnostic apparatus according to claim 6, wherein at least one of the magnetic body and the magnet is disposed along the side surface of the cover at a portion away from the X-ray detector and the X-ray aperture.

11. The X-ray diagnostic apparatus according to claim 10, wherein at least one of the magnetic body and the magnet is disposed along an edge of a side surface of the cover.

12. The X-ray diagnostic apparatus according to claim 11, wherein at least one of the magnetic body and the magnet is continuously disposed along an edge of a side surface of the cover.

13. The X-ray diagnostic apparatus according to claim 11, wherein at least one of the magnetic body and the magnet is intermittently disposed along an edge of a side surface of the cover.

14. The X-ray diagnostic apparatus according to claim 10, wherein at least one of the magnetic body and the magnet is disposed in a strip shape along a central portion of a side surface of the cover.

15. The side surface of the cover has a curved surface portion having a curved shape in a cross section along a moving direction of the X-ray aperture or the X-ray detector, The X-ray diagnostic apparatus according to claim 10, wherein at least one of the magnetic body and the magnet is disposed to face the curved surface portion.

16. The X-ray diagnostic apparatus according to claim 15, wherein the curved surface portion has a curved shape in a cross section along each of a plurality of moving directions of the X-ray detector.

17. The X-ray diagnostic apparatus according to claim 16, wherein the curved surface portion has a dot shape when viewed from a direction orthogonal to a side surface of the cover.

18. An X-ray tube that irradiates an object with X-rays, An X-ray detector that detects X-rays transmitted through the object, A cover that covers at least the X-ray tube and the X-ray detector, At least one of a first magnetic body and a first magnet disposed on the cover, An X-ray diagnostic apparatus comprising: A cap that covers the cover and protects the X-ray diagnostic apparatus, An X-ray diagnostic system comprising at least one of a second magnet and a second magnetic body that is adsorbed to at least one of the first magnetic body and the first magnet with the cap interposed therebetween.

Images