medical devices

Abstract

This medical device comprises: a platform-like portion that is provided with a contact surface with which a test object comes into contact; a structural portion which is set at a position that falls within a prescribed range relative to the platform-like portion; and a sterilizing part which is mounted to either the platform-like portion or the structural portion and which is for sterilizing the contact surface. The device is configured to be switchable between a first state in which the sterilizing part is either in contact with or in proximity to the contact surface and a second state in which the sterilizing part is separated apart from the contact surface.

Description

[Technical Field]

[0001] The disclosed technology relates to medical devices. [Background technology]

[0002] Among medical devices such as diagnostic devices and treatment devices, there are known devices that sterilize parts that come into contact with a subject, such as an examination table. For example, JP2012-511381A describes an X-ray device in which an illumination device mounted on a C-arm sterilizes the examination table by transmitting UV radiation. Summary of the Invention [Problem to be solved by the invention]

[0003] If a subject who is the subject of diagnosis or treatment using a medical device such as a diagnostic device or a treatment device is infected with a pathogen such as a bacterium or a virus, there is a risk that other subjects or doctors will become infected with the pathogen through the part of the medical device that the subject comes into contact with. Therefore, it is preferable to increase the frequency of sterilization, for example, by sterilizing the part of the medical device that the subject comes into contact with each time treatment for one subject is completed.

[0004] Patent Document 1 describes that an illumination device mounted on a C-arm emits ultraviolet light to sterilize the examination table. However, if the distance between the ultraviolet light source and the examination table is long, the energy of the ultraviolet light will be dispersed, making it impossible to achieve a sufficient sterilization effect. On the other hand, if the distance between the ultraviolet light source and the examination table is short, it may interfere with the normal use of the medical device (for example, X-ray imaging).

[0005] The disclosed technology has been developed in consideration of the above points, and aims to effectively sterilize the contact surface of a medical device having a contact surface that comes into contact with a subject without interfering with the normal use of the medical device. [Means for solving the problem]

[0006] The medical device according to the disclosed technology includes a platform portion having a contact surface with which the subject comes into contact, a structural portion whose relative position with respect to the platform portion is determined within a predetermined range, and a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface, and is configured to be switchable between a first state in which the sterilization unit is in contact with or close to the contact surface, and a second state in which the sterilization unit is separated from the contact surface.

[0007] In the first state, the distance between the sterilization unit and the contact surface is preferably 10 cm or less. The structural part may be an inspection unit that inspects the specimen without contact. The structural part may be a radiation source that emits radiation. The structural part may be a detection unit that detects radiation. The sterilization unit may include a light source that emits ultraviolet light.

[0008] The medical device may include a radiation source unit that emits radiation. In this case, the sterilization unit may include a phosphor that absorbs the radiation and emits ultraviolet light, and in the first state, the phosphor may be irradiated with the radiation emitted from the radiation source unit.

[0009] The sterilizing unit may spray a liquid or gas having a sterilizing effect toward the contact surface, or may include a wiping member that is a member impregnated with the liquid having a sterilizing effect and that wipes the contact surface.

[0010] The medical device may further include a fixation unit that fixes the subject by sandwiching the subject between itself and the platform-like portion. In this case, the sterilization unit may be capable of emitting at least one of light, liquid, or gas having a sterilizing effect from both a first surface and a second surface opposite to the first surface, and in the first state, the first surface may face the contact surface of the platform-like portion and the second surface may face the surface of the fixation unit that contacts the subject.

[0011] The medical device may further include a control unit that controls a sterilization process in which the sterilization unit sterilizes the contact surface. At least one of the sterilization unit and the contact surface may be movable in the planar direction of the contact surface. In this case, the control unit may set the state of the sterilization unit to a first state during the sterilization process, and move at least one of the sterilization unit and the contact surface in the planar direction.

[0012] The medical device may further include an area detection unit that detects a contact area of ​​the contact surface that is in contact with the subject. In this case, the control unit may sterilize the contact surface by applying a higher sterilization intensity to the contact area detected by the area detection unit than to areas other than the contact area.

[0013] The medical device may further include a height detection unit that detects the height of the contact surface. In this case, the control unit may control the height of the sterilization unit in accordance with changes in the height of the contact surface detected by the height detection unit so that the distance between the sterilization unit and the contact surface remains constant during the sterilization process.

[0014] The control unit may initiate the sterilization process based on order information related to the diagnosis or treatment of the subject.

[0015] In the sterilization process, the control unit may sterilize the contact surface in a sterilization mode selected from a plurality of sterilization modes having different sterilization intensities.

[0016] The table-like portion may be an examination table on which a subject to be treated by the medical device lies. [Effects of the Invention]

[0017] According to the disclosed technology, in a medical device having a contact surface that comes into contact with a subject, it is possible to effectively sterilize the contact surface without interfering with normal use of the medical device. [Brief explanation of the drawings]

[0018] [Figure 1A]1 is a diagram illustrating an example of the configuration of a CT device, which is an example of a medical device according to an embodiment of the disclosed technology. [Figure 1B] 1 is a diagram of a CT apparatus according to an embodiment of the disclosed technology, viewed from the rear side. [Figure 2] FIG. 2 is a diagram illustrating an example of the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 3] 10 is a flowchart illustrating an example of the flow of a sterilization process performed by a control unit according to an embodiment of the disclosed technology. [Figure 4] 10A and 10B are diagrams illustrating the operation of the bed section during a sterilization process according to an embodiment of the disclosed technology. [Figure 5A] FIG. 10 is a diagram illustrating another example of the configuration of the sterilization unit according to the embodiment of the disclosed technology. [Figure 5B] FIG. 10 is a diagram illustrating another example of the configuration of the sterilization unit according to the embodiment of the disclosed technology. [Figure 5C] FIG. 10 is a diagram illustrating another example of the configuration of the sterilization unit according to the embodiment of the disclosed technology. [Figure 6] 1 is a diagram of a CT apparatus according to an embodiment of the disclosed technology, viewed from the rear side. [Figure 7A] FIG. 10 is a diagram showing a sterilization unit equipped with a height detection unit according to an embodiment of the disclosed technology. [Figure 7B] FIG. 10 is a diagram showing a sterilization unit equipped with a height detection unit according to an embodiment of the disclosed technology. [Figure 8] 1 is a diagram illustrating a CT device including a region detection unit according to an embodiment of the disclosed technique. [Figure 9A] FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 9B] FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 9C] FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 10A] FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 10B] FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 10C]FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 10D] FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 11] FIG. 2 is a diagram illustrating the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 12A] 10A and 10B are diagrams illustrating an example of a positioning mechanism of a sterilization unit configured to include a phosphor according to an embodiment of the disclosed technology. [Figure 12B] 10A and 10B are diagrams illustrating an example of a positioning mechanism of a sterilization unit configured to include a phosphor according to an embodiment of the disclosed technology. [Figure 12C] 10A and 10B are diagrams illustrating an example of a positioning mechanism of a sterilization unit configured to include a phosphor according to an embodiment of the disclosed technology. [Figure 12D] 10A and 10B are diagrams illustrating an example of a positioning mechanism of a sterilization unit configured to include a phosphor according to an embodiment of the disclosed technology. [Figure 12E] 10A and 10B are diagrams illustrating an example of a positioning mechanism of a sterilization unit configured to include a phosphor according to an embodiment of the disclosed technology. [Figure 12F] 10A and 10B are diagrams illustrating an example of a positioning mechanism of a sterilization unit configured to include a phosphor according to an embodiment of the disclosed technology. [Figure 13] 10 is a flowchart illustrating an example of the flow of a sterilization process performed by a control unit according to an embodiment of the disclosed technology. [Figure 14] FIG. 10 is a diagram illustrating an example of the configuration of a CT device equipped with a second sterilization unit according to an embodiment of the disclosed technology. [Figure 15A] FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. [Figure 15B] FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. [Figure 15C] FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. [Figure 16A] FIG. 10 is a diagram illustrating an example of the configuration of a second sterilization unit according to an embodiment of the disclosed technology. [Figure 16B] FIG. 10 is a diagram illustrating an example of the configuration of a second sterilization unit according to an embodiment of the disclosed technology. [Figure 16C]FIG. 10 is a diagram showing the internal structure of a second sterilization unit according to an embodiment of the disclosed technology. [Figure 17A] 1 is a diagram showing an example of the configuration of a radiographic image capturing apparatus 10A, which is an example of a medical apparatus according to an embodiment of the disclosed technique. [Figure 17B] 17B is a diagram of the radiographic imaging device according to the embodiment of the disclosed technique, viewed from the direction of arrow A in FIG. 17A. [Figure 18A] 17B is a plan view corresponding to FIG. 17A, showing the state of the sterilization unit when sterilizing the contact surface. FIG. [Figure 18B] 17B, ​​showing the state of the sterilization unit when sterilizing the contact surface. FIG. [Figure 19] 1 is a diagram illustrating an example of the configuration of a radiographic image capturing apparatus, which is an example of a medical apparatus according to an embodiment of the disclosed technology. [Figure 20A] 10A and 10B are diagrams illustrating the state of a sterilization unit when sterilizing a contact surface in a radiographic imaging device according to an embodiment of the disclosed technology. [Figure 20B] 10A and 10B are diagrams illustrating the state of a sterilization unit when sterilizing a contact surface in a radiographic imaging device according to an embodiment of the disclosed technology. [Figure 21A] 1 is a diagram illustrating an example of the configuration of a mammography apparatus, which is an example of a medical apparatus according to an embodiment of the disclosed technology. [Figure 21B] 21B is a view of a mammography apparatus according to an embodiment of the disclosed technique, viewed from the direction of arrow B in FIG. 21A. [Figure 22A] 21B is a plan view corresponding to FIG. 21A, showing the state of the sterilization unit when sterilizing the contact surface. FIG. [Figure 22B] 21B, showing the state of the sterilization unit when sterilizing the contact surface. FIG. [Figure 23] FIG. 2 is a diagram illustrating an example of the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 24A] FIG. 2 is a diagram illustrating an example of the configuration of a sterilization unit according to an embodiment of the disclosed technology. [Figure 24B] FIG. 24B is a cross-sectional view taken along line 24B-24B in FIG. 24A. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, an example of an embodiment of the disclosed technology will be described with reference to the drawings. In each drawing, the same or equivalent components and parts are given the same reference numerals, and redundant description will be omitted as appropriate.

[0020] [First embodiment] FIG. 1A is a diagram showing an example of the configuration of a CT device 10, which is an example of a medical device according to a first embodiment of the disclosed technology. The CT device 10 according to this embodiment includes a gantry 11 and an examination table 16. The gantry 11 has a tunnel-like structure with an opening 12 in its center. Inside the gantry 11, there are provided a radiation source unit 13 that emits X-rays and a detection unit 14 that detects the X-rays and generates a radiographic image. The radiation source unit 13 and the detection unit 14 can rotate along the annular shape of the gantry 11 while maintaining a mutually opposing positional relationship. Also, inside the gantry 11, there is provided a control unit 15 that controls the operation of the CT device 10.

[0021] The examination table 16 has a base 16A fixed to the floor and a bed 16B on which the subject (examinee) lies. The surface of the bed 16B is a contact surface 17 with which the subject (examinee) comes into contact. The bed 16B is slidable in the direction of the contact surface 17. When capturing a radiological image, the bed 16B slides, and the subject (examinee) lying on the bed 16B is transported into the opening 12 of the gantry 11.

[0022] The examination table 16 is an example of a "platform portion" in the disclosed technology. The "platform portion" has a contact surface with which the subject (examinee) comes into contact. The gantry 11 is an example of a "structural portion" and also an example of an "examination unit" in the disclosed technology. The "structural portion" is a portion whose relative position with respect to the "platform portion" is determined within a predetermined range. The "examination unit" examines the subject (examinee) without contact. In the following description, the vertical direction is the Z direction, the sliding direction of the bed portion 16B is the Y direction, and the direction perpendicular to both the Z direction and the Y direction is the X direction.

[0023] 1B is a view (XZ plane view) of the CT scanner 10 as seen from the rear side (the side opposite to the side where the examination table 16 is installed). A sterilization unit 20 for sterilizing the contact surface 17 is attached to the rear of the gantry 11. The sterilization unit 20 has a long, thin rod shape, one end of which is attached to the gantry 11. A rotation axis 18 whose axial direction is in the Y direction is provided at the attachment part of the sterilization unit 20, and the sterilization unit 20 can rotate around the axis of the rotation axis 18.

[0024] When sterilizing the contact surface 17, the sterilizing unit 20 is placed in a first state (a state in which sterilization processing is possible) in which it is in contact with or in proximity to the contact surface 17. That is, as shown by the solid line in FIGS. 1A and 1B, the sterilizing unit 20 is positioned so that its longitudinal direction is along the X direction and so as to cross the opening 12 of the gantry 11. On the other hand, when capturing a radiographic image using the CT device 10, that is, during normal use of the CT device 10, the sterilizing unit 20 is placed in a second state (retracted state) in which it is separated from the contact surface 17. That is, as shown by the dotted line in FIGS. 1A and 1B, the sterilizing unit 20 is positioned so that its longitudinal direction is along the Y direction so as not to interfere with the movement of the bed unit 16B.

[0025] FIG. 2 is a diagram showing an example of the configuration of the sterilization unit 20. The sterilization unit 20 is configured to include a plurality of light sources 22 that are arranged on a wiring board 21 and emit light having a sterilizing effect. The light from the light sources 22 is irradiated onto the contact surface 17 of the examination table 16, thereby sterilizing the contact surface 17. For example, an LED (Light Emitting Diode) that emits ultraviolet light (UV-C) with a wavelength of 200 to 280 nm can be used as the light source 22. For example, an LED that emits ultraviolet light with a wavelength of 265 nm at 1.7 mJ / cm 2 It is possible to sterilize 99.9% of human coronaviruses by irradiating the light source 22 with ultraviolet light. A mercury lamp can also be used as the light source 22 that emits ultraviolet light.

[0026] The length L of the sterilization unit 20 in the longitudinal direction is preferably equal to or longer than the length of the contact surface 17 in the X direction. The sterilization unit 20 may be equipped with a lens to focus light from the light source 22. However, when UV-C waves are used as the sterilizing light, the lens material is limited to materials that transmit UV-C waves (e.g., quartz and sapphire), which increases costs. If a lens is not used, it is preferable to minimize the distance between the sterilization unit 20 and the contact surface 17. For effective sterilization, the distance D between the sterilization unit 20 and the contact surface 17 is preferably 10 cm or less, more preferably 5 cm or less, and most preferably 2 cm or less. If the bed 16B can be raised and lowered in the Z direction, the distance D between the sterilization unit 20 and the contact surface 17 may be adjusted by adjusting the height of the bed 16B.

[0027] 3 is a flowchart showing an example of the flow of the sterilization process performed by the control unit 15 when sterilizing the contact surface 17. The sterilization process is executed, for example, when a user performs an operation to start the sterilization process. The operation to start the sterilization process is performed, for example, using an operation unit or console (neither of which is shown) provided in the CT scanner 10.

[0028] In step S1, the control unit 15 transitions the state of the sterilization unit 20 to a first state (a state in which sterilization processing is possible). This positions the sterilization unit 20 so that its longitudinal direction is along the X direction. In step S2, the control unit 15 turns on the light source 22 of the sterilization unit 20. In step S3, the control unit 15 slides the bed portion 16B of the examination table 16.

[0029] Figure 4 is a diagram (YZ cross-sectional view) showing the operation of the bed unit 16B during the sterilization process. As shown in Figure 4, the control unit 15 slides the bed unit 16B while maintaining the state of the sterilization unit 20 in the first state. This causes the area of ​​the contact surface 17 that passes directly below the sterilization unit 20 to move sequentially, making it possible to irradiate the entire contact surface 17 with the light having a sterilizing effect emitted from the sterilization unit 20. If the gantry 11 is movable along the Y direction, the gantry 11 may be moved together with the sterilization unit 20 in order to irradiate the entire contact surface 17 with light from the sterilization unit 20.

[0030] In step S4, the control unit 15 determines whether or not sterilization of the contact surface 17 is complete. For example, the control unit 15 determines that sterilization is complete when the bed unit 16B reaches the terminal position on the rear side of the gantry 11 and then returns to the initial position (i.e., when the bed unit 16B has made one round trip). If the control unit 15 determines that sterilization of the contact surface 17 is complete, the process proceeds to step S5.

[0031] In step S5, the control unit 15 turns off the light source 22. In step S6, the control unit 15 transitions the state of the sterilization unit 20 to the second state (retracted state). As a result, the control unit 15 positions the sterilization unit 20 so that its longitudinal direction is along the Y direction.

[0032] As described above, the CT device 10 according to this embodiment can be switched between a first state in which the sterilization unit 20 is in contact with or close to the contact surface 17, and a second state in which the sterilization unit 20 is separated from the contact surface 17. When sterilizing the contact surface 17, the sterilization unit 20 can be set to the first state, thereby enabling effective sterilization of the contact surface 17. Furthermore, when sterilization of the contact surface 17 is not required, the sterilization unit 20 can be set to the second state, thereby avoiding interference with normal use of the CT device 10 (i.e., capturing radiographic images). In other words, the CT device 10 according to this embodiment can effectively sterilize the contact surface 17 without interfering with normal use of the CT device 10.

[0033] In the above description, the sterilization unit 20 is provided with a light source 22 that emits light having a sterilizing effect, such as ultraviolet light, but the present invention is not limited to this. Figures 5A, 5B, and 5C are views (YZ plan views) showing other examples of the configuration of the sterilization unit 20.

[0034] As shown in FIG. 5A, the sterilization unit 20 may spray a gas or liquid with sterilizing action toward the contact surface 17. Examples of gas with sterilizing action that can be used include ozone and plasma. Examples of liquid with sterilizing action that can be used include alcohol and hypochlorous acid solution. Alternatively, the sterilization unit 20 may spray an aerosol, which is solid or liquid particles with sterilizing action dispersed in a gas.

[0035] 5B, the sterilization unit 20 may be a member impregnated with a liquid having a sterilizing effect, such as alcohol or a hypochlorous acid solution, and may include a wiping member 23 that wipes the contact surface 17. The wiping member 23 may be a soft member such as cloth or sponge.

[0036] Furthermore, as shown in Figure 5C, the sterilization unit 20 may have a configuration in which a plurality of different types of sterilizing members are lined up along the Y direction, which is the sliding direction of the bed unit 16B. The example shown in Figure 5C illustrates a configuration in which a light source 22 that emits light with a sterilizing effect and a wiping member 23 impregnated with a liquid with a sterilizing effect are lined up along the Y direction. By lining up a plurality of different types of sterilizing members along the sliding direction of the bed unit 16B, it is possible to promote the sterilization action of the sterilization unit 20. Note that the combination of multiple types of sterilizing members can be selected as appropriate, and it is also possible to combine three or more types of sterilizing members.

[0037] Furthermore, in the above description, an example has been given in which the sterilization unit 20 is switched between the first state and the second state by rotating it around the rotation shaft 18, but this is not limiting. For example, as shown in FIG. 6, the sterilization unit 20 may be switched between the first state and the second state by moving it up and down in the Z direction along the guide rod 31. When sterilizing the contact surface 17, the sterilization unit 20 is placed in the first state (a state in which sterilization processing is possible) in contact with or close to the contact surface 17, and is positioned in a lowered position as shown by the solid line in FIG. 6. On the other hand, when capturing a radiographic image using the CT device 10, i.e., during normal use of the CT device 10, the sterilization unit 20 is placed in the second state (a retracted state) in which it is separated from the contact surface 17, and is positioned in a raised position as shown by the dotted line in FIG. 6.

[0038] 7A, the CT device 10 may also include a height detection unit 24 that detects the height of the contact surface 17. As the height detection unit 24, for example, a Time Of Flight (TOF) camera that captures a distance image representing the distance to the subject using a TOF method can be used.

[0039] If the CT scanner 10 is equipped with a height detection unit 24, the control unit 15 may raise and lower the sterilization unit 20 in response to changes in the height of the contact surface 17 detected by the height detection unit 24 so that the distance between the sterilization unit 20 and the contact surface 17 remains constant during the sterilization process, as shown in FIG. 7B . This maintains a constant distance between the sterilization unit 20 and the contact surface 17, even if a structure such as a pillow is placed on the examination table 16 and the contact surface 17 has irregularities, making it possible to properly sterilize the contact surface 17. Note that although FIGS. 7A and 7B illustrate a configuration in which the height detection unit 24 is attached to the sterilization unit 20, the height detection unit 24 may also be attached to the opening 12 of the gantry 11.

[0040] Furthermore, in the above description, an example has been given in which the sterilization process is started based on a user operation, but the sterilization process may also be started based on order information issued prior to radiographic imaging by the CT device 10. For example, if the order information includes information on the radiographic imaging schedule, the control unit 15 may start the sterilization process based on the information on the imaging schedule included in the order information. For example, the control unit 15 may identify the timing after imaging of a given subject has ended and before imaging of the next subject begins, and start the sterilization process at that timing.

[0041] Furthermore, in the sterilization process, control unit 15 may sterilize contact surface 17 in a sterilization mode selected from a plurality of sterilization modes with different sterilization intensities. For example, if sterilization unit 20 includes light source 22 that emits ultraviolet light, it is possible to vary the sterilization intensity by changing at least one of the irradiation time, irradiation range, and irradiation intensity of the ultraviolet light.

[0042] The irradiation time of ultraviolet light can be changed, for example, by the moving speed of the sliding bed section 16B during the sterilization process. The irradiation time of ultraviolet light can also be changed by the number of times the bed section 16B moves back and forth during the sterilization process. The irradiation range of ultraviolet light can be changed, for example, by the moving range of the sliding bed section 16B during the sterilization process. The irradiation intensity of ultraviolet light can be changed, for example, by the driving current of the light source 22 that emits ultraviolet light. The sterilization mode is selected, for example, by a user operation. The sterilization mode selection operation is performed, for example, using an operation unit or console (neither of which is shown) provided on the CT scanner 10. Three sterilization modes may be provided, for example, a standard mode, a high-speed mode, and an enhanced mode.

[0043] When the standard mode is selected, the control unit 15 sets the moving speed of the bed unit 16B to the standard speed during the sterilization process, and irradiates the entire contact surface 17 with ultraviolet rays by moving the bed unit 16B back and forth once.

[0044] When the high-speed mode is selected, the control unit 15 sets the moving speed of the bed unit 16B to a speed higher than the standard speed during the sterilization process, and limits the moving range of the contact surface 17, thereby irradiating ultraviolet rays only to a portion of the contact surface 17. This reduces the sterilization intensity compared to the standard mode, but shortens the processing time. The high-speed mode is a mode that can be selected, for example, when a large number of imaging orders are in a waiting state.

[0045] When the enhanced mode is selected, the control unit 15 sets the moving speed of the bed 16B to a speed slower than the standard speed during the sterilization process, and repeats the process of irradiating the entire contact surface 17 with ultraviolet light multiple times by moving the bed 16B back and forth multiple times. This results in a longer processing time than in the standard mode, but the sterilization intensity is higher, allowing for more reliable sterilization. The enhanced mode is a mode that can be selected, for example, when using the CT device 10 on a subject suspected of being infected with a pathogen.

[0046] 8, the CT device 10 may also include a region detection unit 19 that detects a contact region of the contact surface 17 that is in contact with the subject (examinee). The region detection unit 19 may be, for example, a visible light camera installed so that the entire contact surface 17 fits within its field of view. When the CT device 10 includes the region detection unit 19, the control unit 15 may sterilize the contact surface 17 by increasing the sterilization intensity in the contact region detected by the region detection unit 19 compared to regions other than the contact region. For example, the control unit 15 may slow the movement speed of the bed unit 16B when the contact region passes directly below the sterilization unit 20 compared to the movement speed of the bed unit 16B when regions other than the contact region pass directly below the sterilization unit 20. The control unit 15 may also increase the irradiation intensity of ultraviolet light when the contact region passes directly below the sterilization unit 20 compared to the irradiation intensity of ultraviolet light when regions other than the contact region pass directly below the sterilization unit 20. In this way, by sterilizing the contact surface 17 with a sterilization intensity in the contact area higher than that in the area other than the contact area, it is possible to carry out the sterilization process efficiently.

[0047] In the above explanation, a configuration in which the sterilization unit 20 is attached to the gantry 11 has been exemplified, but as shown in Figure 9A, the sterilization unit 20 may also be attached to the examination table 16. In the example shown in Figure 9A, the sterilization unit 20 is attached to the base 16A of the examination table 16 via an arm unit 32. A rotation shaft 33 whose axial direction is the Y direction in the state shown in Figure 9A is provided between the sterilization unit 20 and the arm unit 32, and the sterilization unit 20 can rotate around the axis of the rotation shaft 33. The arm unit 32 can rotate around the axis of a rotation shaft 34 whose axial direction is the X direction.

[0048] When sterilizing the contact surface 17, the sterilizer 20 is placed in a first state (a state in which sterilization processing is possible) in contact with or close to the contact surface 17. That is, as shown in FIG. 9A, the arm unit 32 is positioned so that its longitudinal direction is along the Z direction, and the sterilizer 20 is positioned so that its longitudinal direction is along the X direction. As shown in FIG. 9B, by sliding the bed unit 16B while the sterilizer 20 is in the first state, it is possible to sterilize the entire contact surface 17. On the other hand, when capturing a radiographic image using the CT device 10, i.e., during normal use of the CT device 10, the sterilizer 20 is placed in a second state (a retracted state) in which it is separated from the contact surface 17. That is, as shown in FIG. 9C, the sterilizer 20 is positioned so that its longitudinal direction is along the longitudinal direction of the arm unit 32, and the arm unit 32 is positioned so that its longitudinal direction is along the Y direction.

[0049] In this way, even in a configuration in which the sterilization unit 20 is attached to the examination table 16, it is possible to effectively sterilize the contact surface 17 without interfering with normal use of the CT device 10.

[0050] FIG. 10A is a diagram showing another example of the configuration of the sterilization unit 20 attached to the examination table 16. FIG. 10B is a cross-sectional view taken along line 10B-10B in FIG. 10A. The sterilization unit 20 is attached to the examination table 16 via a pair of arms 35 attached to both ends of the sterilization unit 20 in the longitudinal direction. A roller 36 is provided at one end of the arm 35 in the longitudinal direction. The roller 36 is fitted into a guide groove 37 provided in the Y direction on the side of the bed 16B. When the roller 36 is driven by a motor (not shown), the arm 35 can move in the Y direction together with the sterilization unit 20. The arm 35 has an axial direction in the X direction and can rotate around a rotation shaft 38 provided in the same position as the roller 36 is attached.

[0051] When sterilizing the contact surface 17, the sterilizer 20 is placed in a first state (a state in which sterilization processing is possible) in which it is in contact with or in proximity to the contact surface 17. That is, as shown in FIGS. 10A and 10B, the arm unit 35 is positioned so that the sterilizer 20 is located above the bed unit 16B. As shown in FIG. 10C, by driving the roller 36 while the sterilizer 20 is in the first state, the arm unit 35 moves together with the sterilizer 20 along the extension direction (Y direction) of the guide groove 37. This makes it possible to sterilize the entire contact surface 17. On the other hand, when capturing a radiographic image using the CT device 10, i.e., during normal use of the CT device 10, the sterilizer 20 is placed in a second state (a retracted state) in which it is separated from the contact surface 17. That is, as shown in FIG. 10D, the arm unit 35 is positioned so that the sterilizer 20 is located below the bed unit 16B.

[0052] In this way, even in a configuration in which the sterilization unit 20 is self-propelled, it is possible to effectively sterilize the contact surface 17 without interfering with normal use of the CT device 10. Furthermore, even if the CT device 10 does not have a mechanism for sliding the bed unit 16B, by applying this configuration, it is possible to sterilize the entire contact surface 17.

[0053] 11 is a diagram showing another configuration of the sterilization unit 20. The sterilization unit 20 may be configured to include a phosphor 25 that absorbs radiation (X-rays) and emits ultraviolet light. X-rays emitted from the radiation source unit 13 are used as the radiation irradiated onto the phosphor 25. For example, Cs2ZnCl4, HfP2O7, BaFCl:Eu, BaFBr:Eu, YTaO4, or Ba2O2S:Tb can be used as the phosphor 25.

[0054] Fig. 12A is a diagram (XZ plan view) showing an example of a positioning mechanism for a sterilization unit 20 configured to include phosphor 25. Fig. 12B is a cross-sectional view (YZ cross-sectional view) taken along line 12B-12B in Fig. 12A, and Fig. 12C is a cross-sectional view (XY cross-sectional view) taken along line 12C-12C in Fig. 12A.

[0055] As shown in FIGS. 12A to 12C, the sterilization unit 20, which includes phosphor 25, is attached to the gantry 11 via a support unit 40, a first guide rail 41, and a second guide rail 42. The second guide rail 42 includes a pair of rod-shaped members whose longitudinal direction is in the Z direction, and is fixed to the rear surface of the gantry 11. The first guide rail 41 includes a pair of rod-shaped members whose longitudinal direction is in the Y direction, and is provided slidably relative to the second guide rail 42. In other words, the first guide rail 41 is movable (liftable) along the Z direction. The support unit 40 is a member that supports the sterilization unit 20 at the end on the rear side (left side of FIG. 12B) of the sterilization unit 20, and is provided slidably relative to the first guide rail 41. In other words, the support unit 40 is movable along the Y direction together with the sterilization unit 20.

[0056] When sterilizing the contact surface 17, the sterilization unit 20 is placed in a first state (a state in which sterilization processing is possible) in which it is in contact with or in proximity to the contact surface 17. That is, as shown in FIG. 12B , the first guide rail 41 is positioned at a height position near the center of the opening 12 of the gantry 11, and the support unit 40 is positioned at an end position on the front side of the first guide rail 41 (the right side in FIG. 12B ). This positions the sterilization unit 20 within the opening 12 of the gantry 11. Meanwhile, the radiation source unit 13 is positioned so that the phosphor 25 is included in the X-ray irradiation field. That is, the radiation source unit 13 is placed directly above the phosphor 25.

[0057] In this state, X-rays are emitted from the radiation source unit 13, which irradiates the phosphor 25 with the X-rays and causes the phosphor 25 to emit ultraviolet rays. The ultraviolet rays emitted from the phosphor 25 are irradiated onto the contact surface 17 of the bed unit 16B. As shown in FIG. 12B, by sliding the bed unit 16B while keeping the sterilization unit 20 in the first state, it is possible to sterilize the entire contact surface 17. X-rays are continuously emitted from the radiation source unit 13 during the sterilization process.

[0058] On the other hand, when radiographic images are taken by the CT device 10, that is, during normal use of the CT device 10, the sterilization unit 20 is placed in a second state (retracted state) away from the contact surface 17. That is, when the sterilization process is completed, the support unit 40 moves to an end position on the rear side of the first guide rail 41 (left side of FIG. 12D) as shown in FIG. 12D. Thereafter, the first guide rail 41 moves to the upper end position of the second guide rail 42 as shown in FIG. 12E, and then the support unit 40 moves to an end position on the front side of the first guide rail 42 (right side of FIG. 12F) as shown in FIG. 12F. This positions the sterilization unit 20 above the gantry 11.

[0059] FIG. 13 is a flowchart showing an example of the flow of the sterilization process performed by the control unit 15 when sterilizing the contact surface 17 in a CT device 10 having a positioning mechanism for the sterilization unit 20 that includes the above-mentioned phosphor 25.

[0060] In step S11, the control unit 15 transitions the state of the sterilization unit 20 to the first state shown in Fig. 12B. As a result, the sterilization unit 20 including the phosphor 25 is placed inside the opening 12 of the gantry 11.

[0061] In step S12, the control unit 15 positions the radiation source unit 13 so that the phosphor 25 is included in the irradiation field of the X-rays emitted from the radiation source unit 13. That is, the radiation source unit 13 is placed directly above the phosphor 25.

[0062] In step S13, the control unit 15 starts emitting X-rays from the radiation source unit 13. As a result, X-rays from the radiation source unit 30 irradiate the phosphor 25, and ultraviolet rays are emitted from the phosphor 25. The ultraviolet rays emitted from the phosphor 25 are irradiated onto the contact surface 17. In step S14, the control unit 15 slides the bed unit 16B of the examination table 16. As a result, ultraviolet rays are irradiated onto the entire contact surface 17. While the bed unit 16B is sliding, X-rays are continuously emitted from the radiation source unit 13.

[0063] In step S15, the control unit 15 determines whether or not sterilization of the contact surface 17 is complete. For example, the control unit 15 determines that sterilization is complete when the bed unit 16B reaches the terminal position on the rear side of the gantry 11 and then returns to the initial position (i.e., when the bed unit 16B has made one round trip). If the control unit 15 determines that sterilization of the contact surface 17 is complete, the process proceeds to step S16.

[0064] In step S16, the control unit 15 stops the emission of X-rays from the radiation source unit 13. In step S16, the state of the sterilization unit 20 is transitioned to the second state (retracted state). As a result, the sterilization unit 20 is positioned above the gantry 11, as shown in Fig. 12F.

[0065] In this way, even in a configuration in which the sterilization unit 20 includes the phosphor 25, it is possible to effectively sterilize the contact surface 17 without interfering with normal use of the CT scanner 10. Furthermore, instead of configuring the sterilization unit including the phosphor 25 with guide rails 41, 42, it may be configured with an arm as shown in Figures 10A to 10D. For sterilization, when sterilization is performed while the bed 16B is traveling toward the gantry (-Y direction) at a speed V, the arm holding the sterilization unit 20 is moved in advance to the end of the bed 16B closer to the gantry 11. Next, the bed section 16B moves in the direction of the gantry 11 at a speed V for sterilization, and when the arm reaches the center position of the gantry, which is the optimal position for X-ray irradiation, the arm is moved in the opposite direction (+Y direction) to the gantry 11 at the same speed V as the bed section 16B so that it remains stationary at that position.In other words, by controlling the movement speed of the bed section 16B and the movement speed of the arm to be the same but in opposite directions, X-rays are always irradiated to the sterilization section, and the phosphor 25 that absorbs the X-rays emits ultraviolet light, thereby performing sterilization.

[0066] Fig. 14 is a diagram (XZ plan view) showing an example of the configuration of a CT device 10 equipped with a second sterilization unit 20B that sterilizes the inner wall surface 12A of the opening 12 of the gantry 11. Figs. 15A, 15B, and 15C are cross-sectional views (XY cross-sectional views) taken along line 15-15 in Fig. 14.

[0067] The second sterilization unit 20B is attached to the first sterilization unit 20A for sterilizing the contact surface 17 of the examination table 16. The first sterilization unit 20A corresponds to the sterilization unit 20 shown in Figures 1A and 1B. The second sterilization unit 20B is attached to the first sterilization unit 20A via an arm unit 26. The second sterilization unit 20B is attached to the tip of the arm unit 26, and the end of the arm unit 26 is attached to the longitudinal center of the first sterilization unit 20A. A rotation axis 27 whose axial direction is in the Y direction is provided at the attachment point of the arm unit 26 to the first sterilization unit 20A, and the arm unit 26 can rotate 360° around the axis of the rotation axis 27.

[0068] Figures 16A and 16B are diagrams showing an example of the configuration of the second sterilization unit 20B, and Figure 16C is a diagram showing the internal structure of the second sterilization unit 20B. The second sterilization unit 20B is configured to include multiple tubular members 28 of different diameters and a light source 22B that is provided inside the tubular members 28 and emits light with sterilizing action, such as ultraviolet light. The second sterilization unit 20B is extendable and contractible, and in the extended state shown in Figure 16A, the multiple tubular members 28 are arranged so that their diameters gradually decrease toward the tips. On the other hand, in the contracted state shown in Figure 16B, tubular members 28 with relatively smaller diameters are housed inside tubular members 28 with relatively larger diameters.

[0069] Each of the cylindrical members 28 has an opening 29. The inner wall surface of the cylindrical member 28 is covered with a reflective film made of a light-reflective material such as aluminum. As a result, as shown in FIG. 16C , light emitted from the light source 22B is reflected by the inner wall surface of the cylindrical member 28 and emitted to the outside of the cylindrical member 28 through the opening 29. The opening 29 is disposed in a direction facing the inner wall surface 12A of the opening 12 of the gantry 11.

[0070] When sterilizing the inner wall surface 12A by the second sterilization unit 20B, as shown in Figures 15A, 15B, and 16A, the second sterilization unit 20B is extended and the arm unit 26 rotates around the rotation shaft 27. As a result, as shown in Figures 15A and 15B, the second sterilization unit 20B moves along the inner wall surface 12A while maintaining contact with or proximity to the inner wall surface 12A. As a result, the light emitted from the light source 22B is irradiated onto the entire inner wall surface 12A.

[0071] On the other hand, when radiographic images are taken using the CT device 10, that is, during normal use of the CT device 10, the second sterilization unit 20B is contracted as shown in Figures 15C and 16B. Thereafter, as shown by the dotted line in Figure 14, the first sterilization unit 20A is positioned so that its longitudinal direction is aligned with the Z direction.

[0072] In this way, the CT device 10 has the second sterilization unit 20B in addition to the first sterilization unit 20A, so that it is possible to sterilize not only the contact surface 17 of the examination table 16 but also the inner wall surface 12A of the opening 12 of the gantry 11. Furthermore, by making the arm unit 26 on which the second sterilization unit 20B is provided rotatable around the rotation axis 27, it is possible to sterilize the entire inner wall surface 12A. Furthermore, by making the second sterilization unit 20B extendable, it is possible to perform the sterilization process without interfering with normal use of the CT device 10.

[0073] In the above description, the second sterilization unit 20B includes a light source 22B that emits sterilizing light, but this is not limited to this configuration. For example, the second sterilization unit 20B may spray a sterilizing gas such as ozone or plasma, or a sterilizing liquid such as alcohol or hypochlorous acid solution. The second sterilization unit 20B may also include a wiping member that is impregnated with a sterilizing liquid such as alcohol or hypochlorous acid solution and wipes the inner wall surface 12A. The second sterilization unit 20B may also be configured with multiple different types of sterilization members arranged side by side. Sterilization using ultraviolet light emitted by a phosphor that absorbs X-rays (FIG. 12) is also possible. Since the direction of the fluorescent light is isotropic (all 360 degrees), if the gantry 11 is configured to emit light from both the top and bottom inner wall surfaces of the opening, the inner wall of the gantry 11 can be sterilized, and the upper part of the inner wall surface (where viruses are more likely to adhere) can also be sterilized at the same time as the examination table 16 is sterilized.

[0074] [Second embodiment] Fig. 17A is a diagram (XZ plan view) showing an example of the configuration of a radiographic imaging device 10A, which is an example of a medical device according to a second embodiment of the disclosed technology. Fig. 17B is a diagram (YZ plan view) of the radiographic imaging device 10A viewed from the direction of arrow A in Fig. 17A. In the following description, the vertical direction is defined as the Z direction, the sliding direction of the bed unit 16B is defined as the Y direction, and the direction perpendicular to both the Z direction and the Y direction is defined as the X direction.

[0075] The radiographic imaging device 10A has a so-called C-arm configuration and includes a radiation source unit 13 attached to one end of a C-arm 50 and a detection unit 14 attached to the other end of the C-arm 50. The radiographic imaging device 10A also includes a control unit 15 and an examination table 16. The C-arm 50 is rotatable in the θ direction and the Φ direction shown in FIG. 17A and can also move up and down in the Z direction. The radiation source unit 13 and the detection unit 14 can rotate and move up and down in conjunction with the rotation and elevation of the C-arm 50 while maintaining a mutually opposing positional relationship. In the radiographic imaging device 10A according to this embodiment, the detection unit 14 is disposed above a bed unit 16B, and the radiation source unit 13 is disposed below the bed unit 16B.

[0076] The examination table 16 has a base 16A fixed to the floor and a bed 16B on which the subject (examinee) lies. The surface of the bed 16B serves as a contact surface 17 with which the subject (examinee) comes into contact. The bed 16B is installed so as to protrude into the area between the radiation source unit 13 and the detection unit 14 attached to the C-arm 50. When capturing a radiological image, the bed 16B can slide to fit any part of the subject (examinee) within the imaging field of view.

[0077] The examination table 16 is an example of a "platform portion" in the disclosed technology. The "platform portion" has a contact surface with which the subject comes into contact. Each component of the structure consisting of the C-arm 50, the radiation source unit 13, and the detection unit 14 is an example of a "structural portion" and also an example of an "examination unit" in the disclosed technology. The "structural portion" is a portion whose relative position with respect to the "platform portion" is determined within a predetermined range. The "examination unit" examines the subject without contact.

[0078] A sterilization unit 20 for sterilizing the contact surface 17 of the bed unit 16B is attached to the detection unit 14 via an arm unit 51. The sterilization unit 20 has a long, thin rod shape, and one longitudinal end of the sterilization unit 20 is connected to one end of the arm unit 51. A rotation shaft 52 whose axial direction is the X direction is provided at the other end of the arm unit 51, and the arm unit 51 is rotatable around the axis of the rotation shaft 52. As in the first embodiment, the sterilization unit 20 can be one that emits light having a sterilizing effect, one that sprays gas or liquid having a sterilizing effect, one that includes a wiping member, or one that has a configuration in which a plurality of different types of sterilizing members are arranged.

[0079] 18A and 18B are plan views corresponding to FIGS. 17A and 17B, respectively, showing the state of the sterilization unit 20 when sterilizing the contact surface 17. When sterilizing the contact surface 17, the sterilization unit 20 is placed in a first state (a state in which sterilization processing is possible) in which it is in contact with or close to the contact surface 17. That is, as shown in FIGS. 18A and 18B, the arm unit 51 is positioned so that the sterilization unit 20 is located between the detection unit 14 and the bed unit 16B. As shown in FIG. 18B, by sliding the bed unit 16B while the sterilization unit 20 is in the first state, it is possible to sterilize the entire contact surface 17. The distance between the sterilization unit 20 and the contact surface 17 can be adjusted by adjusting the height position of the C-arm 50. If the bed unit 16B can be raised and lowered in the Z direction, the distance between the sterilization unit 20 and the contact surface 17 can also be adjusted by adjusting the height position of the bed unit 16B.

[0080] On the other hand, when a radiographic image is captured by the radiographic image capturing device 10A, that is, during normal use of the radiographic image capturing device 10A, the sterilization unit 20 is placed in the second state (retracted state) away from the contact surface 17. As a result, as shown in Figures 17A and 17B, the arm unit 51 is positioned so that the sterilization unit 20 is located above the detection unit 14.

[0081] According to the radiographic imaging device 10A of the second embodiment of the disclosed technology, as with the first embodiment, it is possible to effectively sterilize the contact surface 17 without interfering with normal use of the radiographic imaging device 10A.

[0082] In the above description, the detection unit 14 is arranged above the bed 16B and the radiation source unit 13 is arranged below the bed 16B, but the radiation source unit 13 may be arranged above the bed 16B and the detection unit 14 may be arranged below the bed 16B. In this case, the sterilization unit 20 is attached to the radiation source unit 13 arranged above the bed 16B via an arm. In addition, the sterilization unit 20 of the configurations shown in Figures 9A to 9C, 10A to 10D, and 11 can also be applied to the radiographic imaging device 10A.

[0083] [Third embodiment] 19 is a diagram (YZ plan view) showing an example of the configuration of a radiographic imaging device 10B which is an example of a medical device according to a third embodiment of the disclosed technology. In the following description, the vertical direction is defined as the Z direction, the traveling direction of the traveling unit 61 is defined as the Y direction, and the direction perpendicular to both the Z direction and the Y direction is defined as the X direction.

[0084] The radiographic imaging device 10B has a so-called ceiling-mounted configuration and includes a guide rail 60 attached to the ceiling, a running section 61 that runs on the guide rail 60, an extendable support section 62 connected to the running section 61, and a radiation source section 13 attached to the tip of the support section 62. The radiographic imaging device 10B further includes a control section 15 and an examination table 16.

[0085] The examination table 16 has a base 16A fixed to the floor and a bed 16B on which the subject (examinee) lies. The surface of the bed 16B is a contact surface 17 with which the subject (examinee) comes into contact. The examination table 16 is installed so as to be located below the radiation source unit 13. The traveling unit 61 travels on a guide rail 60, making it possible to position the radiation source unit 13 and to place any part of the subject (examinee) within the imaging field of view. A portable detection unit (not shown) can be used as a detection unit for detecting radiation. The detection unit may also be built into the bed 16B.

[0086] The examination table 16 is an example of a "platform portion" in the disclosed technology. The "platform portion" has a contact surface with which the subject comes into contact. Each component of the structure consisting of the guide rail 60, the running portion 61, the support portion 62, and the radiation source portion 13 is an example of a "structural portion" and also an example of an "examination portion" in the disclosed technology. The "structural portion" is a portion whose relative position with respect to the "platform portion" is determined within a predetermined range. The "examination portion" examines the subject without contact.

[0087] A sterilization unit 20 for sterilizing the contact surface 17 of the bed unit 16B is attached to the radiation source unit 13 via an arm unit 63. The sterilization unit 20 has a long, thin rod shape, and one longitudinal end of the sterilization unit 20 is connected to one end of the arm unit 63. A rotation shaft 64 whose axial direction is in the X direction is provided at the other end of the arm unit 63, and the arm unit 63 is rotatable around the axis of the rotation shaft 64. The sterilization unit 20 is movable in the Y direction by the traveling unit 61 traveling on the guide rail 60. As with the first embodiment, the sterilization unit 20 can be one that emits light having a sterilizing effect, one that sprays gas or liquid having a sterilizing effect, one that includes a wiping member, or one that has a configuration in which a plurality of different types of sterilizing members are arranged.

[0088] 20A and 20B are diagrams showing the state of the sterilization unit 20 when sterilizing the contact surface 17. FIG. 20A is a YZ plan view, and FIG. 20B is an enlarged XZ plan view of the sterilization unit 20. When sterilizing the contact surface 17, the sterilization unit 20 is placed in a first state (a state in which sterilization processing is possible) in which it is in contact with or close to the contact surface 17. That is, as shown in FIGS. 20A and 20B, the arm unit 63 is positioned so that the sterilization unit 20 is located between the radiation source unit 13 and the bed unit 16B. While the sterilization unit 20 is in the first state, the traveling unit 61 travels to move the sterilization unit 20 in the Y direction, thereby making it possible to sterilize the entire contact surface 17. The distance between the sterilization unit 20 and the contact surface 17 can be adjusted by adjusting the length of the extendable support unit 62. When the bed section 16B is movable up and down in the Z direction, the distance between the sterilization section 20 and the contact surface 17 may be adjusted by adjusting the height position of the bed section 16B.

[0089] On the other hand, when a radiographic image is captured by the radiographic image capturing device 10B, that is, during normal use of the radiographic image capturing device 10B, the sterilization unit 20 is placed in the second state (retracted state) away from the contact surface 17. That is, as shown in Fig. 19, the arm unit 63 is positioned so that the sterilization unit 20 is located above the radiation source unit 13.

[0090] According to the radiographic imaging device 10B according to the third embodiment of the disclosed technology, similar to the first embodiment, it is possible to effectively sterilize the contact surface 17 without interfering with normal use of the radiographic imaging device 10B. Note that it is also possible to apply the sterilization unit 20 of the configurations shown in Figures 9A to 9C, 10A to 10D, and 11 to the radiographic imaging device 10B.

[0091] [Fourth embodiment] Fig. 21A is a diagram (YZ plan view) showing an example of the configuration of a mammography apparatus 10C, which is an example of a medical apparatus according to a fourth embodiment of the disclosed technology. Fig. 21B is a diagram (XZ plan view) of the mammography apparatus 10C viewed from the direction of arrow B in Fig. 21A. In the following description, the vertical direction is defined as the Z direction, the direction in which the subject, who is the subject of radiographic imaging by the mammography apparatus 10C, faces during imaging is defined as the Y direction, and the direction perpendicular to both the Z and Y directions is defined as the X direction.

[0092] The mammography device 10C includes an arm 70, a radiation source 13, a detection unit 14, a compression paddle 71, an imaging table 72, and a control unit 15. The radiation source 13 and imaging table 72 are attached to the arm 70, and the detection unit 14 and control unit 15 are provided inside the imaging table 72.

[0093] The arm unit 70 is connected to a rotation shaft 73 whose axial direction is the Y direction, and is rotatable around the rotation shaft 73 and can also move up and down in the Z direction. The radiation source unit 13 and the detection unit 14 can rotate and move up and down in conjunction with the rotation and movement of the arm unit 70, while maintaining their opposing positional relationship. The compression plate 71 is provided between the radiation source unit 13 and the imaging table 72 so that it can move up and down in the Z direction. When a radiographic image of a breast, which is a subject, is taken, the breast is sandwiched and compressed between the compression plate 71 and the imaging table 72. The surface of the imaging table 72 is the contact surface 17A with which the breast, which is the subject, comes into contact.

[0094] The imaging table 72 is an example of a "table-like portion" in the disclosed technology. The "table-like portion" has a contact surface with which the subject comes into contact. The radiation source unit 13 is an example of a "structural portion" and also an example of an "examination unit" in the disclosed technology. The "structural portion" is a portion whose relative position with respect to the "table-like portion" is determined within a predetermined range. The "examination unit" examines the subject without contact. The compression plate 71 is an example of a "fixing portion" in the disclosed technology. The "fixing portion" fixes the subject by sandwiching the subject between it and the "table-like portion".

[0095] A sterilization unit 20 for sterilizing the contact surface 17A of the imaging table 72 is attached to the imaging table 72 via an arm unit 74. The sterilization unit 20 is attached to the imaging table 72 via a pair of arms 74 attached to both ends of the sterilization unit 20 in the longitudinal direction. A roller 75 is provided at one longitudinal end of the arm unit 74. The roller 75 is fitted into a guide groove 76 provided on the side of the imaging table 72 along the Y direction. When the roller 75 is driven by a motor (not shown), the arm unit 74 can move along the Y direction together with the sterilization unit 20. The arm unit 74 has an axial direction in the X direction and can rotate around a rotation shaft 77 provided at the same position as the roller 75. As with the first embodiment, the sterilization unit 20 can be one that emits light having a sterilizing effect, one that sprays gas or liquid having a sterilizing effect, one that includes a wiping member, or one that has a configuration in which multiple different types of sterilization members are arranged.

[0096] 22A and 22B are plan views corresponding to FIGS. 21A and 21B, respectively, showing the state of the sterilization unit 20 when sterilizing the contact surface 17A. When sterilizing the contact surface 17A, the sterilization unit 20 is placed in a first state (a state in which sterilization processing is possible) in which it is in contact with or close to the contact surface 17A. That is, as shown in FIGS. 22A and 22B, the arm unit 74 is positioned so that the sterilization unit 20 is located above the imaging table 72. By driving the roller 75 while the sterilization unit 20 is in the first state, the arm unit 74 moves together with the sterilization unit 20 along the extension direction (Y direction) of the guide groove 76. This makes it possible to sterilize the entire contact surface 17A.

[0097] On the other hand, when a radiographic image is taken using the mammography apparatus 10C, i.e., during normal use of the mammography apparatus 10C, the sterilization unit 20 is placed in the second state (retracted state) away from the contact surface 17A. That is, as shown in Fig. 21A, the arm 74 is positioned so that the sterilization unit 20 is located at the terminal position below the imaging table 72, on the opposite side from the subject's chest wall.

[0098] According to the mammography apparatus 10C according to the fourth embodiment of the disclosed technology, as with the first embodiment, it is possible to effectively sterilize the contact surface 17A without interfering with normal use of the mammography apparatus 10C.

[0099] FIG. 23 shows an example of the configuration of a sterilization unit 20 capable of simultaneously sterilizing both the breast contact surface 17A of the imaging table 72 and the breast contact surface 17B of the compression paddle 71. As shown in FIG. 23, the sterilization unit 20 may be configured to include multiple light sources 22 that emit sterilizing light and are arranged on both sides of a wiring board 21. The optical axes of the light sources 22 arranged on each side of the wiring board 21 are oriented in the Z direction. That is, the sterilization unit 20 is capable of emitting sterilizing light both upward and downward in the Z direction. When sterilizing the contact surfaces 17A and 17B, one side of the sterilization unit 20 faces the breast contact surface 17A of the imaging table 72 and the other side faces the breast contact surface 17B of the compression paddle 71, and light from the light sources 22 is irradiated onto both contact surfaces 17A and 17B. When sterilizing the compression plate 71, it is preferable to control the height position of the compression plate 71 so that the compression plate 71 is close to or in contact with the sterilization unit 20.

[0100] FIG. 24A shows another example of the configuration of a sterilization unit 20 capable of simultaneously sterilizing both the breast contact surface 17A of the imaging table 72 and the breast contact surface 17B of the compression paddle 71. FIG. 24B is a cross-sectional view taken along line 24B-24B in FIG. 24A. As shown in FIG. 24B, the sterilization unit 20 may include multiple light sources 22 arranged in the X direction that emit sterilizing light, and a reflecting surface 80 that reflects the light from the light sources 22 upward and downward in the Z direction. The optical axis of the light sources 22 is the Y direction. The sterilization unit 20 may also be configured to spray a sterilizing liquid or gas both upward and downward in the Z direction. The sterilization unit 20 may also include wiping members for wiping the contact surfaces 17A and 17B on both its surface facing the breast contact surface 17A of the imaging table 72 and its other surface facing the breast contact surface 17B of the compression paddle 71.

[0101] The disclosed technology can also be applied to medical devices other than those exemplified in the first to fourth embodiments. For example, it can be applied to a radiation imaging device that captures radiation images in an upright position, a radiation imaging device that performs fluoroscopic imaging, an MRI (Magnetic Resonance Imaging) device, a PET (Positive Emission Tomography) device, a bone mineral quantification device, and a radiation therapy device. That is, the disclosed technology can be applied to any medical device that includes a platform portion having a contact surface with which a subject comes into contact and a structural portion whose relative position with respect to the platform portion is determined within a predetermined range. For example, in a radiation imaging device that captures radiation images in an upright position, where a subject comes into contact with a detector that detects radiation, the detector is considered to be a "platform portion having a contact surface" and is subject to sterilization.

[0102] The disclosure of Japanese Patent Application No. 2020-180888, filed on October 28, 2020, is incorporated herein by reference in its entirety. In addition, all documents, patent applications, and technical standards described herein are incorporated herein by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference.

Claims

1. a platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, The structural part is a radiation source part that emits radiation. Medical devices.

2. A platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, The structural part is a detection part that detects radiation. Medical devices.

3. A platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, a radiation source unit that emits radiation; The sterilization unit includes a phosphor that absorbs radiation and emits ultraviolet light, In the first state, the radiation emitted from the radiation source is irradiated onto the phosphor. Medical devices.

4. A platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, a fixing unit that fixes the subject by sandwiching the subject between itself and the platform portion, The sterilization unit is capable of emitting at least one of light, liquid, or gas having a sterilizing effect from both a first surface and a second surface opposite to the first surface, In the first state, the first surface faces the contact surface of the platform portion, and the second surface faces the surface of the fixing portion that comes into contact with the subject. Medical devices.

5. A platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, A control unit that controls a sterilization process in which the sterilization unit sterilizes the contact surface; further comprising an area detection unit that detects a contact area of ​​the contact surface that is in contact with the subject; The control unit, in the sterilization process, sterilizes the contact surface by increasing the sterilization intensity in the contact area detected by the area detection unit compared to an area other than the contact area. Medical devices.

6. A platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, A control unit that controls a sterilization process in which the sterilization unit sterilizes the contact surface; Further including a height detection unit that detects the height of the contact surface, The control unit controls the height of the sterilization unit in accordance with a change in the height of the contact surface detected by the height detection unit so that the distance between the sterilization unit and the contact surface is constant during the sterilization process. Medical devices.

7. A platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, Further comprising a control unit that controls a sterilization process in which the sterilization unit sterilizes the contact surface, The control unit starts the sterilization process based on order information related to the diagnosis or treatment of the subject. Medical devices.

8. A platform portion having a contact surface with which the subject comes into contact; a structural portion whose relative position with respect to the platform portion is determined within a predetermined range; a sterilization unit attached to the platform portion or the structural portion for sterilizing the contact surface; Including, The sterilization unit is configured to be switchable between a first state in which it is in contact with or close to the contact surface and a second state in which it is separated from the contact surface, Further comprising a control unit that controls a sterilization process in which the sterilization unit sterilizes the contact surface, The control unit sterilizes the contact surface in a sterilization mode selected from a plurality of sterilization modes having different sterilization intensities in the sterilization process. Medical devices.

9. In the first state, the distance between the sterilization part and the contact surface is 10 cm or less. A medical device according to any one of claims 1 to 8.

10. The sterilization unit includes a light source that emits ultraviolet light. A medical device according to any one of claims 1 to 8.

11. The sterilization unit injects a liquid or gas having a sterilizing effect toward the contact surface. A medical device according to any one of claims 1 to 8.

12. The sterilizing section is a member impregnated with a liquid having a sterilizing effect, and includes a wiping member that wipes the contact surface. A medical device according to any one of claims 1 to 8.

13. The sterilization unit further includes a control unit that controls a sterilization process for sterilizing the contact surface, At least one of the sterilization unit and the contact surface is movable in the surface direction of the contact surface, The control unit sets the state of the sterilization unit to the first state during the sterilization process, and moves at least one of the sterilization unit and the contact surface in the planar direction. A medical device according to any one of claims 1 to 8.

14. The platform portion is an examination table on which a subject to be treated in the medical device lies. A medical device according to any one of claims 1 to 8.

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