JP5445651B2 - Portable radiographic imaging device - Google Patents

Description

  The present invention relates to a portable radiographic image capturing apparatus.

  Conventionally, for the purpose of disease diagnosis and the like, a radiographic image taken using radiation, represented by an X-ray image, has been widely used. Such medical radiographic images were conventionally taken using a screen film, but in recent years, digitization of radiographic images has been realized. For example, a stimulable phosphor layer forms radiation transmitted through a subject. After being stored in the photostimulable phosphor sheet, the photostimulable phosphor sheet is scanned with laser light, and thereby the photostimulated light emitted from the photostimulable phosphor sheet is photoelectrically converted to image data. CR (Computed Radiography) devices for obtaining the above are widely used (see, for example, Patent Documents 1 and 2).

  In radiographic imaging, a cassette in which a recording medium such as a screen film or a photostimulable phosphor sheet is housed is used. The CR cassette used for photographing with the CR device can continue to use existing equipment, for example, a cassette holder or a bucky device, which has been introduced to be compatible with a conventional screen / film cassette. Furthermore, it is designed and manufactured following the JIS standard size in the screen / film cassette. In other words, the cassette size compatibility is maintained, and the facility is effectively utilized and the image data is digitized.

  Recently, as a means for obtaining a medical radiographic image, a radiographic imaging device is known as a device for detecting irradiated radiation and acquiring it as digital image data (see, for example, Patent Document 3). A radiographic imaging device usually includes a sensor panel in which a plurality of radiation detection elements that generate electric charges according to the dose of irradiated radiation are arranged in a two-dimensional manner, and detects radiation with a flat sensor panel. Therefore, it is also known as an FPD (Flat Panel Detector).

  In addition, as the radiographic imaging apparatus, a so-called direct type radiographic imaging apparatus in which irradiated radiation is directly incident on a radiation detection element and electric charges are generated by the radiation detection element and converted into an electric signal, or irradiated radiation is used. Is converted to an electromagnetic wave of other wavelengths such as visible light with a scintillator, etc., and then the converted electromagnetic wave is generated by a radiation detection element (photoelectric conversion element) such as a photodiode and converted into an electrical signal. Various radiographic imaging devices have been developed.

  Furthermore, portable imaging devices (portable radiographic imaging devices) in which this sensor panel is housed in a housing (housing) have come into practical use (see, for example, Patent Documents 4 and 5). Such a portable radiographic imaging device is portable, so it can be taken in a patient's room or the like, and can be taken freely according to the position or angle of the imaging region. Since it is possible to adjust the angle and angle, it is expected to be widely used.

  By the way, as described above, the currently popular cassette for CR is sized in accordance with the JIS standard size of the conventional screen / film cassette, and the Bucky device and the like are also made according to this JIS standard size. It has been.

  Therefore, if the portable radiographic imaging device can also be formed in a cassette that conforms to this JIS standard size, the portable radiographic imaging device was used using existing equipment installed in the facility. It becomes possible to perform imaging, and capital investment when introducing a portable radiographic imaging apparatus as imaging means can be minimized.

  However, in the JIS standard size, the thickness in the radiation incident direction has to be formed as thin as 15 mm + 1 mm to 15 mm-2 mm, and the planar area is 14 inches × 17 inches (355). .6mm × 431.8mm, half-cut size) and so on.

  In addition, when the radiographic imaging device is formed in a portable type in which the sensor panel is housed in the housing, it is not only loaded into the bucky device and used as described above, but also in a state of not being loaded into the bucky device or the like. The patient's hand, leg, torso, etc., which is the subject, are directly placed on the plane on which radiation is incident (see radiation incident surface R in FIG. 18) of the portable radiographic imaging apparatus in the state, and radiographic imaging is performed in that state. It is also possible to use it in such a manner.

  In that case, the portable radiographic image capturing apparatus 100 is a so-called lunch box type in which the housing 101 is formed by combining the front member 101A and the back member 101B as shown in FIG. In this case, when the subject is placed on the radiation incident surface R, the radiation incident surface R is easily bent due to its weight, and is joined by being broken or broken at the side wall portion 101C of the front member 101A or the back member 101B. It may come off.

  In particular, the problem appears remarkably in the portable radiographic imaging apparatus 100 that is thinly and widely configured according to the JIS standard size as described above. In FIG. 18 and FIG. 19 described later, illustration of a built-in sensor panel and the like is omitted.

  Therefore, the housing 201 of the portable radiographic imaging device 200 is formed in a hollow rectangular tube shape having an opening 202 at the end, as in the X-ray imaging device described in Patent Document 6 shown in FIG. By adopting a so-called monocoque body system, the above-described problem can be solved. And the opening part 202 of the housing 201 is obstruct | occluded with the cover part 203, for example.

JP 2005-121783 A JP 2005-114944 A JP-A-9-73144 JP 7-246199 A US Pat. No. 5,804,832 JP 2002-31526 A

  By the way, although the sensor panel 204 is accommodated in such a housing 201, as shown in FIG. 20, the sensor panel 204 is not damaged by an impact or the like when the portable radiographic image capturing apparatus 200 is dropped. In many cases, the cushioning material 205 is provided between the inside of the housing 201 and the sensor panel 204. Further, when the cushioning material 205 is configured to have a function of positioning the sensor panel 205 in the housing 201, the cushioning material 205 is formed by the end portion of the sensor panel 204 and the side wall of the housing 201. It is in a pressed state.

  However, as shown in FIG. 21, when the sensor panel 204 is to be inserted into the housing 201 during assembly or maintenance of the radiographic imaging apparatus 200, the sensor panel 204 presses the cushioning material 205 at its end. And it will be in the state press-fitted while rubbing the buffer material 205. FIG.

  Therefore, as shown in FIG. 22, the buffer material 205 may be destroyed and a part 205a may be lost due to the pressing of the corner of the sensor panel 204. For example, as shown in FIG. When a part 205a of the material 205 moves to a part Q between the sensor panel 204 and the radiation incident surface R, the incident radiation is blocked by the part 205a of the buffer material 205, and the obtained radiographic image is defective. There is a possibility of blurring and blurring.

  However, in order to avoid this, when the sensor panel 204 is inserted into the housing 201 during assembly or maintenance of the radiographic imaging apparatus 200, the cushioning material 205 is not destroyed at the corners of the sensor panel 204. If the buffer material 205 is required to be replaced when it is slowly inserted or the buffer material 205 is destroyed, the workability of the insertion operation of the sensor panel 204 into the housing 201 is significantly reduced.

  The present invention has been made in view of the above problems, and in a portable radiographic imaging device including a cushioning material inside a monocoque body type housing, improves the workability of inserting a sensor panel into the housing. It is an object of the present invention to provide a portable radiographic image capturing apparatus that can perform the above-described operation.

In order to solve the above problem, the portable radiographic imaging device of the present invention is:
A housing including a rectangular tube-shaped housing body having a radiation incident surface;
A sensor panel that is housed in the housing and has a plurality of radiation detection elements arranged in a two-dimensional manner to generate electric charge according to the dose of irradiated radiation;
With
A cushioning material is provided between the inner surface of the radiation incident surface of the housing body and the sensor panel,
A plate-like sliding member is interposed between the cushioning material and the inner surface of the radiation incident surface of the housing main body.

  According to the portable radiographic imaging apparatus of the system as in the present invention, when the sensor panel is inserted into the housing body, when the sensor panel is pushed in the insertion direction, the sliding member is pressed from the inner wall of the housing body. In order to press the cushioning material while being bent, the cushioning material can be moved by pushing the sensor panel in the insertion direction without having to artificially press the cushioning material toward the sensor panel. It is pressed from the inner wall of the side and is compressed to the sensor panel side.

  Then, the sliding member smoothly moves in the insertion direction while being in sliding contact with the side inner wall without being caught by the side inner wall of the housing main body, and the sensor panel can be smoothly inserted. Therefore, it is possible to improve the workability of inserting the sensor panel into the monocoque body type housing.

  Further, since the sliding member and the cushioning material are not caught on the housing main body, for example, as shown in FIG. 22, it is prevented that the cushioning material is destroyed and part thereof is lost at the time of insertion, for example, as shown in FIG. As described above, a part of the dampened cushioning material moves to a portion between the sensor panel and the radiation incident surface, and the incident radiation is blocked and the occurrence of defects or blurring in the radiographic image is accurately prevented. It becomes possible to do.

It is a perspective view which shows the radiographic imaging apparatus which concerns on this embodiment. It is a disassembled perspective view of the housing in this embodiment. It is sectional drawing which follows the AA line in FIG. It is a top view which shows the structure of the board | substrate part of the sensor panel which concerns on this embodiment. FIG. 5 is an enlarged view showing a configuration of an imaging element, a thin film transistor, and the like formed in a small region on the substrate of FIG. 4. It is a side view explaining the structure of a sensor panel. It is a perspective view explaining the shock absorbing material and sliding member attached to the edge part of a sensor panel. (A) is a figure which shows the buffer member in which the cross-sectional shape was formed in V shape, (b) is a figure which shows the state which the sensor panel was guided and positioned, (c) is a figure which shows the sensor panel buffering It is a figure which shows the state hold | maintained by the member. It is a figure explaining the state by which a sensor panel is inserted in a housing main-body part. It is a figure explaining the modification of the sliding member in which the upper side blade | wing part was formed. It is a figure explaining the modification of the sliding member in which the upper side blade part and the lower side blade part were formed. It is sectional drawing explaining the 2nd shock absorbing material provided between the inner surface of a radiation-incidence surface, and a sensor panel. It is a figure explaining the 2nd sliding member interposed between the 2nd buffer material and the radiation entrance plane. It is a figure explaining the sliding member and 2nd sliding member which were formed integrally. (A) It is a figure explaining the state which carries a radiographic imaging device down from a hand, (b) It is a figure explaining the state which carries a radiographic imaging device by holding. It is a figure explaining the state which loaded the radiographic imaging apparatus provided with the cover member and the antenna apparatus in the short side surface part to the Bucky device in the vertically long state. It is a figure explaining the state which loaded the radiographic imaging device provided with the cover member and the antenna apparatus in the long side surface part to the Bucky device in (a) vertically long state and (b) horizontally long state. It is a disassembled perspective view of a lunch box type housing. It is a disassembled perspective view of the housing of a monocoque body system. It is sectional drawing explaining the shock absorbing material provided between the housing and the sensor panel. It is a figure explaining the state which inserts a sensor panel in a housing. It is a figure explaining the state where a shock absorbing material is destroyed by the press of the corner | angular part of a sensor panel, and the one part is missing. It is a figure explaining the state which a part of missing buffer material moved to the part between a sensor panel and a radiation entrance plane.

  Embodiments of a portable radiographic image capturing apparatus according to the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following illustrated examples.

  Hereinafter, the portable radiographic imaging device is simply referred to as a radiographic imaging device. In the following, a so-called indirect type radiographic imaging apparatus that includes a scintillator or the like as a radiographic imaging apparatus, converts the emitted radiation into electromagnetic waves of other wavelengths such as visible light, and obtains an electrical signal with a photoelectric conversion element. However, the present invention can also be applied to a so-called direct type radiographic imaging apparatus that directly detects radiation with a detection element without using a scintillator or the like. Hereinafter, the photoelectric conversion element and the detection element are collectively referred to as a radiation detection element.

  FIG. 1 is an external perspective view of a radiographic image capturing apparatus according to the present embodiment, and FIG. 2 is an exploded perspective view of a housing in the present embodiment. The radiographic image capturing apparatus 1 according to the present embodiment is a cassette-type portable radiographic image capturing apparatus in which a sensor panel SP and the like to be described later are housed in a housing 2 as shown in FIGS. 1 and 2. It is configured. In FIG. 2, illustration of the sensor panel SP and the like is omitted.

  The housing 2 includes a hollow rectangular tube-shaped housing main body 21 having a radiation receiving surface R, that is, a surface on which radiation is irradiated in a state where a subject is placed or arranged in the vicinity at the time of radiographic imaging. It is a so-called monocoque body system. The housing body 21 is formed of a material such as a carbon plate or plastic that transmits radiation.

  The housing 2 includes lid members 22 and 23 that cover and close the openings 211 and 212 of the housing main body 21. In FIGS. 1 and 2, the thickness of the radiation incident direction of the housing 2 (that is, the Z direction orthogonal to the radiation incident surface R) is relatively thick compared to the size of the radiation incident surface R and the like. In addition, when it is formed so as to meet the JIS standard size in the above-mentioned CR cassette and conventional screen / film cassette, its thickness in the radiation incident direction is 16 mm or less, more precisely 15 mm + 1 mm to 15 mm. -2 mm in thickness.

  In the present embodiment, the lid members 22 and 23 include lid main body portions 221 and 231 and insertion portions 222 and 232, which are each formed of a nonconductive material such as a nonconductive plastic. . The lid main body portions 221 and 231 are formed so that the outer circumferences thereof are approximately equal to the outer circumference dimensions of the respective opening portions 211 and 212 of the housing main body portion 21.

  Further, if the insertion portions 222 and 232 are formed so as to fit into the openings 211 and 212 of the housing main body 21 or press fit into the openings 211 and 212, the lid members 22 and 23 and the openings are opened. This is preferable because it is possible to prevent external light from entering the inside of the housing 2 from the gap between the portions 211 and 212.

  Further, as shown in FIG. 2, engaging pieces 223 and 233 for engaging the housing main body 21 and the lid members 22 and 23 from the side portions of the insertion portions 222 and 232 are respectively provided in the housings of the lid members 22 and 23. For example, engagement protrusions 224 and 234 are provided on the outer surfaces of the engagement pieces 223 and 233, respectively, so as to extend in the insertion direction to the main body 21 (X direction in the drawing).

  Then, by engaging the engaging convex portions 224 and 234 with the engaging concave portions 213 and 214 provided inside the housing main body portion 21, the inside of the housing main body portion 21 is sealed, The lid members 22 and 23 are integrated.

  The means for joining the housing body 21 and the lid members 22 and 23 is not limited to those exemplified here. For example, they may be joined by screwing, or may be bonded and fixed. It is also possible to configure.

  In the present embodiment, an antenna device 24 is embedded in the side surface portion of the lid main body portion 221 of one lid member 22 so that the radiographic imaging device 1 transmits and receives signals and data wirelessly with an external device. ing.

  Further, on the same side surface portion of the lid main body 221, a charging terminal 25 connected to an external power source or the like when charging a battery (not shown) built in the housing 2, or a power source of the radiation imaging apparatus 1. A power switch 26 for switching ON / OFF of the battery, for example, an indicator 27 that is configured by an LED or the like and displays a charging state of the battery, various operation states, and the like.

  In the present embodiment, the case where the antenna device 24, the charging terminal 25, and the like are all provided on one lid member 22 is illustrated, but a part of them is provided on the other lid member 23 and the like. It is good also as a structure. Further, the interface parts such as the antenna device 24 and the charging terminal 25 are not limited to those exemplified here, and other parts may be included, or a part of them may not be provided. Also good.

  3 is a cross-sectional view taken along line AA in FIG. The sensor panel SP is formed in a plate shape and accommodated in the housing 2, and as shown in FIG. 3, the scintillator 3, the substrate 4 and the like are laminated.

  Specifically, first, the scintillator 3 is, for example, a phosphor whose main component is converted into an electromagnetic wave having a wavelength of 300 to 800 nm, that is, an electromagnetic wave centered on a visible ray and output when receiving radiation. Used. The scintillator 3 is bonded to a detection part P of the substrate 4 described later.

  In the present embodiment, the substrate 4 is formed of a glass substrate. As shown in FIG. 4, a plurality of scanning lines 5 and a plurality of signal lines are provided on a surface 4 a of the substrate 4 facing the scintillator 3. 6 are arranged so as to cross each other.

  Each small region r defined by the plurality of scanning lines 5 and the plurality of signal lines 6 on the surface 4a of the substrate 4 is provided with a radiation detection element 7 for generating electric charge according to the dose of irradiated radiation. It has been. In this way, the radiation detection elements 7 are two-dimensionally arranged on the substrate 4, and the entire region r in which the plurality of radiation detection elements 7 are provided, that is, the region indicated by the alternate long and short dash line in FIG. P.

  In the present embodiment, as the radiation detection element 7, the radiation incident from the radiation incident surface R is converted by the scintillator 3 and output, according to the amount of electromagnetic waves (increased according to the radiation dose incident on the scintillator 3). For example, a phototransistor or the like can also be used.

  As shown in the enlarged view of FIG. 5, one electrode of each radiation detection element 7 is connected to a source electrode 8s of a TFT (thin film transistor) 8 that is a switch element. The drain electrode 8 d of the TFT 8 is connected to the signal line 6, and the gate electrode 8 g of the TFT 8 is connected to the scanning line 5. A bias line 9 for applying a reverse bias voltage to the radiation detection element 7 is connected to the other electrode of the radiation detection element 7.

  As shown in FIGS. 4 and 5, in the present embodiment, one bias line 9 is connected to a plurality of radiation detection elements 7 arranged in rows, and each bias line 9 is connected to a signal line 6. Are arranged in parallel with each other. In addition, each bias line 9 is bound to one connection 10 at a position outside the detection portion P of the substrate 4.

  In this embodiment, as shown in FIG. 4, each scanning line 5, each signal line 6, and connection 10 of the bias line 9 are input / output terminals (also referred to as pads) provided near the edge of the substrate 4. 11 is connected. As shown in FIG. 6, each input / output terminal 11 has a flexible cable 12 such as a COF (Chip On Film) in which a chip such as an IC 12 a is incorporated, and an anisotropic conductive adhesive film or anisotropic film. They are connected via an anisotropic conductive adhesive material 13 such as conductive paste (Anisotropic Conductive Paste).

  Further, the above-described scintillator 3 is bonded to the detection portion P of the substrate 4 as shown in FIG. Further, as shown in FIGS. 6 and 3, a glass substrate 14 for protecting the scintillator 3 and the like is disposed on the radiation incident surface R side of the scintillator 3. Further, a base 15 is disposed on the lower surface side of the substrate 4, and a PCB substrate 17 on which electronic components 16 and the like are disposed, a buffer member 18, and the like are attached to the base 15.

  As shown in FIG. 6, the flexible cable 12 is routed to the back surface 4b side of the substrate 4 and connected to the PCB substrate 17 on the back surface 4b side. In this way, the sensor panel SP of the radiation image capturing apparatus 1 is formed. Note that the relative thicknesses of the substrate 4, the radiation detection element 7, the scintillator 3, the glass substrate 14, the base 15, the PCB substrate 17, etc. in FIG. 6 do not necessarily reflect reality, and in FIG. The illustration of the component 16, the buffer member 18, etc. is omitted.

  A part of the base 15 of the sensor panel SP, that is, each part that does not interfere with the flexible cable 12 is formed as a covering part 15a that is bent upward (Z direction) and covers the side end part of the sensor panel SP. . Moreover, as shown in FIG. 7, the buffer material 30 made into the substantially rectangular parallelepiped shape in this embodiment is affixed and fixed to the side part of each coating | coated part 15a, respectively.

  The buffer material 30 has a width in the Y direction as shown in FIG. 3 where the sensor panel SP is inserted into the housing body 21 of the housing 2 as shown in FIG. It is formed so as to be larger than the distance between the side portion) and the side inner wall 21a (see FIG. 3) of the housing main body 21.

  In the present embodiment, each of the cushioning materials 30 is formed of foamed polyethylene. However, as will be described later, when the sensor panel SP is inserted into the housing 2 and stored, the end of the sensor panel SP and the housing main body are stored. The sensor panel SP is prevented from being damaged when it is pressed with the inner wall 21a of the side surface 21 and is subjected to an impact, for example, when the radiation image capturing apparatus 1 is dropped, and the like. If the sensor panel SP can be positioned in the Y direction, the cushioning material 30 can be formed using other materials such as foamed urethane or other materials such as rubber.

  In addition, as shown in FIG. 7, in this embodiment, each buffer material 30 has an elongated plate so as to connect each buffer material 30 to each surface 30a opposite to the surface affixed to the covering portion 15a. A sliding member 31 is attached. In the present embodiment, the sliding member 31 is attached to each surface 30 a of each cushioning material 30 by being adhered.

  The sliding member 31 has at least a surface 31a opposite to the surface to be bonded to each cushioning material 30, that is, a surface 31a that is in contact (pressure contact) with the side inner wall 21a of the housing body 21 (see FIG. 3). It is preferable that it is formed in the state which has property, and has a softness | flexibility and rigidity moderately. Therefore, it is preferably made of resin, and PET (polyethylene terephthalate), PE (polyethylene), PP (polypropylene), and the like are preferably used.

  Although not shown in FIG. 2, the sensor panel SP inserted into the housing main body 21 is inserted into the recesses inside the insertion portions 222 and 232 formed in the frame shape of the lid members 22 and 23 of the housing 2. The foamed polyethylene and urethane foam which hold both ends of the X direction and position the sensor panel SP in the housing 2 in the X direction and the Z direction and relieve external force transmitted to the sensor panel SP from the outside Buffer members 225 and 235 made of silicon or the like are provided.

  As shown in FIG. 8A, the buffer members 225 and 235 have a substantially V-shaped cross section on the side where the end of the sensor panel SP abuts, and are inserted into the housing main body 21. The end portion of the panel SP is guided in the X direction or the Z direction along the inclination of the end portions of the buffer members 225 and 235.

  When the lid members 22 and 23 are attached to the housing main body 21, as shown in FIGS. 8A and 8B, the cushion members 225 and 235 inside the lid members 22 and 23 enter the housing main body 21. The end of the inserted sensor panel SP is guided and positioned in the X direction and the Z direction.

  Then, as shown in FIG. 8C, when the lid members 22 and 23 are further pushed in and joined to the housing main body 21, the shape of the buffer members 225 and 235 matches the shape of the end of the sensor panel SP. Thus, the end of the sensor panel SP is held by the buffer members 225 and 235. Thus, the buffer members 225 and 235 hold the sensor panel SP at appropriate positions in the X direction and the Z direction inside the housing 2.

  Next, the operation of the radiation image capturing apparatus 1 according to this embodiment will be described. Hereinafter, the case where the sensor panel SP is inserted into the housing body 21 of the housing 2 and stored will be mainly described.

  As described above, the buffer material 30 is formed such that the width in the Y direction is larger than the distance between the end of the sensor panel SP and the side inner wall 21a of the housing main body 21. Therefore, as shown in FIG. 9, the sensor panel SP in which the cushioning material 30 and the sliding member 31 are attached to both ends in the Y direction as described above is connected to one opening (for example, an opening) of the housing body 21 of the housing 2. In the case of inserting from the portion 211), the sensor panel SP is inserted in the X direction in a state where the cushioning material 30 is pressed to the sensor panel SP side (Y direction).

  At that time, the cushioning material 30 is pressed and compressed by the side inner wall 21a of the housing main body 21 via the sliding member 31, and by its elastic force, the sliding member 31 is reversed to the side inner wall 21a of the housing main body 21. Press.

  When the sensor panel SP is pressed in the X direction in this state, the sliding member 31 having flexibility and rigidity is pressed from the edge portion on the side inner wall 21a side of the opening 211 of the housing main body 21 thereafter. Since the cushioning material 30 is pressed while being bent, even if the cushioning material 30 is not manually pressed to the sensor panel SP side (Y direction), the cushioning material 30 can be slipped only by pushing and moving the sensor panel SP in the X direction. It is pressed from the side inner wall 21a of the housing main body 21 through the member 31 and compressed to the sensor panel SP side (Y direction).

  In addition, since the sliding member 31 is formed in a state in which the surface 31 a abutting against the side inner wall 21 a of the housing main body 21 has smoothness, the edge on the side inner wall 21 a side of the opening 211 of the housing main body 21. It moves smoothly in the X direction while being in sliding contact with the edge portion without being caught by the portion. Therefore, the sensor panel SP can also move smoothly in the X direction and is smoothly inserted into the housing main body 21.

  At this time, in this embodiment, as described above, since the sliding member 31 is attached to each cushioning material 30, it is attached to the edge portion on the side inner wall 21a side of the opening 211 of the housing body 21. It is possible to prevent the relative positions of the sliding member 31 and the buffer members 30 that are in sliding contact with each other from being shifted and only the sensor panel SP is inserted into the housing main body 21.

  When the sensor panel SP is inserted into the housing main body 21 of the housing 2, each cushioning material is provided between the Y-direction end of the sensor panel SP and the side inner wall 21 a of the housing main body 21 as shown in FIG. 3. 30 is pressed, and the sensor panel SP is housed in a state in which the sliding member 31 is interposed between the cushioning material 30 and the side wall 21a of the housing main body 21.

  The sensor panel SP is moved in the Y direction in the housing main body 21 by the elastic force of each buffer material 30 pressed and compressed between the Y direction end of the sensor panel SP and the side inner wall 21a of the housing main body 21. Is positioned.

  In addition, the shock absorber 30 is elastic, viscous, elastic, etc. when an external force is applied to the housing 2 (housing main body portion 21) in the Y direction, such as an impact force when the radiographic image capturing apparatus 1 is dropped. The external force is reduced or absorbed by the viscosity so that the external force does not directly reach the sensor panel SP, thereby preventing the sensor panel SP from being damaged.

  When the sensor panel SP is inserted and housed in the housing body 21 as shown in FIG. 3, the lid members 22 and 23 are respectively placed in the openings 211 and 212 of the housing body 21 as shown in FIG. Is inserted and joined.

  At this time, in the present embodiment, as shown in FIGS. 8A to 8C described above, the end of the sensor panel SP is made to be the buffer member by the buffer members 225 and 235 provided on the lid members 22 and 23. The sensor panel SP is positioned in the X direction or the Z direction within the housing main body 21 by being guided in the X direction or the Z direction along the inclination of the end portions of 225 and 235.

  The buffer members 225 and 235 absorb the external force due to their elasticity when an external force is applied to the housing 2 (housing main body portion 21) such as an impact force when the radiation imaging apparatus 1 is dropped. Thus, the sensor panel SP is prevented from being damaged by acting so that the external force does not directly reach the sensor panel SP.

  As described above, according to the radiographic image capturing apparatus 1 according to the present embodiment, the shock absorber 30 fixed to the end portion of the sensor panel SP includes the end portion of the sensor panel SP and the side inner wall 21a of the housing main body portion 21. Is inserted and stored in a state in which a plate-like sliding member 31 is interposed between the cushioning material 30 and the inner side wall 21a of the housing main body 21. It was configured as follows.

  Therefore, when the sensor panel SP is inserted into the housing main body 21 and the sensor panel SP is pressed in the insertion direction (X direction), the sliding member 31 is pressed from the side inner wall 21a of the housing main body 21 as described above. Since the cushioning material 30 is pressed while being bent, the cushioning material 30 can be simply pushed and moved in the insertion direction without manually pressing the cushioning material 30 toward the sensor panel SP (Y direction). Is pressed from the side inner wall 21a of the housing main body 21 through the sliding member 31 and compressed to the sensor panel SP side (Y direction).

  Then, the sliding member 31 moves smoothly in the insertion direction while sliding on the side inner wall 21a without being caught by the side inner wall 21a of the housing main body 21, so that the sensor panel SP can be inserted smoothly. For this reason, it is possible to improve the insertion workability of the sensor panel SP including the cushioning material 30 inside the monocoque body type housing 2.

  Further, since the sliding member 31 and the cushioning material 30 are not caught on the housing main body 21, for example, as shown in FIG. 22, the cushioning material 30 is prevented from being broken during insertion and a part thereof is lost. As shown in FIG. 23, a part of the chipped cushioning material 30 moves to a portion between the sensor panel SP and the radiation incident surface R so that the incident radiation is blocked. It is possible to accurately prevent the occurrence of.

  In the present embodiment, as shown in FIGS. 6 and 7, etc., the case where the sliding member 31 is formed in an elongated plate shape has been described. However, as shown in FIG. The upper end, that is, the end of the housing main body 21 on the radiation incident surface R (see FIG. 3) side is folded inward to form the upper blade side portion 31a, and the sliding member 31 is formed to have a substantially L-shaped cross section. It is also possible.

  If the sliding member 31 is formed in this way, the same effect as the above embodiment is exhibited, and even if the cushioning material 30 is destroyed for some reason and a part thereof is missing, the part of the lacking part The upper wing side portion 31a accurately hinders the movement of the lens to the portion between the sensor panel SP and the radiation incident surface R. For this reason, it is possible to accurately prevent defects, blurs, and the like from being generated in the radiation image due to, for example, blocking the incident radiation by moving the missing part to a portion between the sensor panel SP and the radiation incident surface R. It becomes possible.

  In this case, the upper wing side portion 31a of the sliding member 31 extends to the upper side of the detection portion P of the substrate 4 of the sensor panel SP, is folded at both ends, and may be constituted by a single member. When a difference in the contact state between the sliding member and the scintillator (an air pocket is formed depending on the location) occurs, the radiation amount reaching the scintillator becomes non-uniform, and the incident radiation is refracted by the upper blade side portion 31a. For example, there is a possibility that the radiation image may have an influence, so care must be taken during manufacturing. Therefore, when giving priority to the yield at the time of manufacture, when the upper blade side part 31a is formed on the sliding member 31, the upper side of the cushioning material 30 is covered, but it does not extend to above the detection part P. Preferably it is formed.

  Further, as shown in FIG. 11, not only the upper blade side portion 31a is formed on the sliding member 31, but also the opposite end thereof is folded back to form the lower blade side portion 31b. It can also be formed in a substantially U-shape.

  If the sliding member 31 is formed in this way, the same effect as that of the above embodiment is exhibited, and the same effect as when the upper blade side part 31a is formed is obtained. Is broken and a part thereof is missing, the missing part enters the side of the sensor panel SP where the electronic component 16 (see FIG. 3) is formed, and adversely affects the operating state of the sensor panel SP. This can be prevented.

  In this case, as shown in FIG. 11, the flexible cable 12 can be protected by providing the lower blade side 31a of the sliding member 31 so as to cover the flexible cable 12 such as the COF described above. It is preferable.

  On the other hand, as shown in FIG. 3, when a gap is formed between the inner surface of the radiation incident surface R of the housing main body 21 of the housing 2 of the radiographic imaging apparatus 1 and the sensor panel SP, for example, the housing main body When the subject is placed on the 21 radiation incident surface R, the radiation incident surface R bends due to its weight, the radiation incident surface R and the sensor panel SP collide, and the sensor panel SP may be damaged. is there.

  Therefore, in order to prevent this, as shown in FIG. 12, a second cushioning material 32 is often provided between the inner surface of the radiation incident surface R of the housing body 21 and the sensor panel SP.

  However, when the second cushioning material 32 is provided on the upper surface of the sensor panel SP in this way, the second cushioning material 32 can be inserted into the housing body 21 in the same manner as the cushioning material 30 when the sensor panel SP is inserted into the housing body 21. For example, it is caught by the edge part of the opening part 211 of the housing main-body part 21, and it is destroyed, The missing part produces a defect, a blur, etc. on a radiographic image similarly to the above, or it has a bad influence on the operating state of sensor panel SP. There is a possibility that.

  Therefore, when the second cushioning material 32 is provided between the inner surface of the radiation incident surface R of the housing main body 21 and the sensor panel SP in this way, as shown in FIG. A plate-like second sliding member 33 may be interposed between the inner surface of the radiation incident surface R of the portion 21. 13 shows the case where the sliding member 31 shown in FIG. 6 or 7 is used, the sliding member 31 may be configured to use the one shown in FIG. 10 or FIG. Is possible.

  Thus, by inserting the second sliding member 33 between the second cushioning material 32 and the inner surface of the radiation incident surface R of the housing main body 21, the sensor panel SP is inserted into the housing main body 21 and stored. In doing so, the sensor panel SP can be smoothly inserted without the second sliding member 33 being caught by the edge portion of the radiation incident surface R of the housing main body 21. Therefore, even when the second cushioning material 32 is provided between the inner surface of the radiation incident surface R of the housing main body 21 and the sensor panel SP, the insertion workability of the sensor panel SP can be improved.

  Further, since the second sliding member 33 and the second cushioning material 32 are not caught on the housing main body 21, it is possible to prevent the second cushioning material 32 from being destroyed and partially missing when the sensor panel SP is inserted. It is possible to accurately prevent the missing part of the second buffer material 32 from causing defects or blurs in the radiation image or adversely affecting the operating state of the sensor panel SP.

  Also, the sliding member 31 and the second sliding member 33 shown in FIG. 13 can be integrally formed as shown in FIG. In addition, in the integrally formed sliding member 31 and second sliding member 33 shown in FIG. 13, it is also possible to fold the lower part of the sliding member 31 inward to form the lower blade side part 31b.

  Thus, since the sliding member 31 and the second sliding member 33 are integrally formed, the sliding member 31 can be formed by bending the end of the second sliding member 33. It becomes very easy to form the second sliding member 33 integrally. In addition, when the sensor panel SP is inserted into the housing main body 21 and stored, the sensor panel SP can be smoothly inserted by the sliding member 31 and the second sliding member 33, and the insertion workability of the sensor panel SP is improved. Can be improved.

  In addition, when the second sliding member 33 is provided on the upper surface side of the second cushioning material 32, the second sliding member 33 can be adhered and fixed to the upper surface of the second cushioning material 32. If the adhesive for affixing 33 to the upper surface of the second buffer material 32 is sparsely applied to the upper surface of the second buffer material 32 or the applied thickness is not uniform, the incident radiation will be in an abnormal direction. There is a possibility that the radiation image will be affected by being refracted.

  Therefore, among the integrally formed sliding member 31 and second sliding member 33, the sliding member 31 portion is attached to the cushioning material 30 and attached, and the second sliding member 33 portion is attached to the second cushioning material 32. The sliding member 31 and the second sliding member 33 that are integrally formed are attached to the sensor panel SP so that the sliding member 31 and the second sliding member 33 that are integrally formed are attached to the sensor panel SP. It is possible to prevent the above-mentioned problem from occurring with high accuracy.

  In the above-described embodiment and its modification, as shown in FIGS. 1 and 2, the openings 211 and 212 of the housing main body 21 are provided on the side surface of the short side of the housing 2 in the monocoque body system. Although the case where it provides is demonstrated, it is also possible to comprise so that each opening part of the housing main-body part 21 may be provided in the long side side part of the housing 2. FIG.

  Thus, if each opening part of the housing main-body part 21 is provided in the long side surface part of the housing 2, when providing each opening part of the housing main body part 21 in the short side surface part of the housing 2, In comparison, as shown in FIG. 9, when the sensor panel SP is inserted into the housing body 21, the sliding distance of the sliding member 31 while being pressed against the side wall 21 a of the housing body 21 is shortened. Work can be easily performed.

  Further, when the radiographic image capturing apparatus 1 is formed in the above-mentioned JIS standard size, its planar area is relatively wide, such as 14 inches × 17 inches (355.6 mm × 431.8 mm, half-cut size), and the like. Since the weight is comparatively heavy at about 1 to 3 kg, it is fatigued when it is carried down from the hand as shown in FIG.

  Therefore, normally, as shown in FIG. 15B, the lower part of the radiographic image capturing apparatus 1 is gripped and carried by the side. In addition, when the length in the vertical direction is 17 inches (431.8 mm), it is difficult for a person with a short height to hold it. Therefore, as shown in FIG.

  In that case, if each opening part of the housing main-body part 21 is provided in the long side side part of the housing 2 like the figure, and the cover members 22 and 23 are engage | inserted and joined there, the cover members 22 and 23 It is possible to form the radiation image capturing apparatus 1 so that it is easy to carry, for example, by using a material having a good grip.

  Further, when the radiographic image capturing apparatus 1 is loaded into the above-described Bucky apparatus and used for radiographic image capturing, the radiographic image capturing apparatus 1 is loaded into the Bucky apparatus B in a so-called vertically long state as shown in FIG. Often used.

  At that time, depending on which position of the radiographic imaging device 1 the antenna device is provided, the housing main body provided on the side surface of the short side of the housing 2 as in the above embodiment (see FIG. 1). When the lid members 22 and 23 are fitted and joined to the respective openings 21 and the antenna device 24 is provided on one of the lid members 22, the antenna device 24 constitutes the bucky device B as shown in FIG. Therefore, there is a possibility that wireless communication via the antenna device 24 is not always easy.

  In that respect, as shown in FIG. 17A, lid members 22 and 23 are fitted and joined to the respective openings of the housing body 21 provided on the short side surface of the housing 2, and one lid member is joined. When the antenna device 24 is provided in the antenna device 24, the antenna device 24 is shielded by a member constituting the bucky device B when the radiographic imaging device 1 is loaded in the bucky device B in a so-called vertically long state. There is nothing. As a result, wireless communication via the antenna device 24 can be easily performed.

  Also, as shown in FIG. 17B, when the radiographic imaging device 1 is loaded and used in a so-called horizontally long state on the bucky device B, the antenna device 24 and the members constituting the bucky device B are used. Since the space can be formed, it is possible to avoid the antenna device 24 from being shielded by the members constituting the bucky device B. Therefore, also in this case, wireless communication via the antenna device 24 can be performed.

  Although illustration is omitted, lid members 22 and 23 are fitted and joined to the respective openings of the housing main body 21 provided on the side surface of the short side of the housing 2, and the antenna device 24 is joined to one lid member 22. Even if the radiographic image capturing apparatus 1 is loaded and used in the so-called horizontally long state in the bucky device B, the antenna device 24 is not shielded by the members constituting the bucky device B, and the radio device via the antenna device 24 is used. Communication can be easily performed.

  Of course, the present invention is not limited to the above-described embodiment and its modifications, and can be modified as appropriate.

1 Radiographic imaging device (portable radiographic imaging device)
2 Housing 7 Radiation Detection Element 21 Housing Body 32 Second Buffer Material (Buffer Material)
33 Second sliding member (sliding member)
R Radiation incident surface SP Sensor panel Z Radiation incidence direction

Claims (2)

A housing including a rectangular tube-shaped housing body having a radiation incident surface;
A sensor panel that is housed in the housing and has a plurality of radiation detection elements arranged in a two-dimensional manner to generate electric charge according to the dose of irradiated radiation;
With
A cushioning material is provided between the inner surface of the radiation incident surface of the housing body and the sensor panel,
A portable radiographic imaging apparatus, wherein a plate-like sliding member is interposed between the buffer material and the inner surface of the radiation incident surface of the housing main body.   The portable radiographic image capturing apparatus according to claim 1, wherein the sliding member is bonded to the cushioning material.

Images