JP2019205543A - Dental x-ray radiographing apparatus - Google Patents

Abstract

To provide a dental X-ray radiographing apparatus which can be installed in a space-saving manner in an X-ray room.SOLUTION: The dental X-ray radiographing apparatus comprises: a revolving arm 10 comprising an X-ray generation device 2 and an X-ray detection device 3 which can be arranged opposite to each other; an arm support part 20 supporting the revolving arm 10 in a freely revolvable manner; a support part 30 supporting the arm support part 20 in an ascendable/descendible manner; a jaw positioning part 50 which is supported by the support part 30 in an ascendable/descendible manner and supports a jaw part of a subject. The jaw positioning part 50 is arranged in a prescribed position between the X-ray generation device 2 and the X-ray detection device 3 arranged opposite to each other, and can be retreated from the prescribed position.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a dental X-ray imaging apparatus.

  In recent years, dental X-ray imaging apparatuses (hereinafter also simply referred to as “X-ray imaging apparatuses”) for panoramic imaging and CT imaging are used in dental clinics. Patent Document 1 discloses a swivel arm including an X-ray generation unit and an X-ray detection unit that can be opposed to each other for panoramic imaging and CT imaging, and a chin positioning unit (chinrest) that supports a subject's jaw. , An X-ray imaging apparatus is disclosed.

  Patent Document 2 discloses an intraoral X-ray apparatus that takes an X-ray photograph of the oral cavity. In this device, an X-ray device is arranged at the tip of an arm unit that moves near the oral cavity of the subject.

JP 2002-34973 A JP 2004-105612 A

  In a dental clinic, two apparatuses having different applications (for example, an X-ray apparatus described in Patent Document 1 and an intraoral X-ray apparatus described in Patent Document 2) may be provided in one X-ray room. . In this case, it is necessary to arrange the two apparatuses so that they do not interfere with each other in the X-ray imaging room. For that purpose, it is possible to increase the floor area of the X-ray room, but the floor area is limited in the dental clinic, and it is necessary to secure a sufficient floor area in the frequently used examination room. For infrequent X-ray rooms, floor space needs to be kept to a minimum.

  In view of the above circumstances, there is a need for a dental X-ray imaging apparatus that can be installed in a space-saving manner in an X-ray imaging room.

  A characteristic configuration of the dental X-ray imaging apparatus of the present invention includes a swivel arm including an X-ray generation unit and an X-ray detection unit that can be opposed to each other, an arm support unit that rotatably supports the swivel arm, A support column that supports the arm support so as to be movable up and down; and a jaw positioning unit that is supported by the support column so as to be movable up and down and supports the jaw of the subject. It is located at a predetermined position between the line generation unit and the X-ray detection unit and is configured to be retractable from the predetermined position.

  As in this configuration, an X-ray imaging apparatus including a swivel arm including an X-ray generation unit and an X-ray detection unit that can be opposed to each other and a chin positioning unit is used for panoramic imaging and CT imaging, and is usually X-ray imaging is performed by positioning the jaw of the subject in an upright posture by the jaw positioning unit. In dental clinics and the like, an intraoral X-ray apparatus (see Patent Document 2) for taking an X-ray photograph in the oral cavity is used separately from such an X-ray imaging apparatus, and X-rays are provided in one X-ray imaging room. An imaging device and an intraoral X-ray device may be provided side by side. As shown in Patent Document 2, the intraoral X-ray device is such that an arm portion provided with an X-ray device at the tip is supported by a column portion so as to be rotatable in a horizontal direction, and the position of the arm portion is determined with respect to a subject in a sitting posture. By adjusting, an X-ray photograph in the oral cavity of the subject is taken.

  Here, in the X-ray imaging apparatus, the jaw positioning unit is positioned below the jaw of the subject in the upright posture, and the arm portion of the intraoral X-ray device is positioned at the same height as the head of the subject in the sitting posture. . Therefore, when an X-ray imaging apparatus and an intraoral X-ray apparatus are provided in the X-ray imaging room, the jaw positioning unit of the X-ray imaging apparatus and the arm part of the intraoral X-ray apparatus are the same as those of the X-ray imaging room. It arrange | positions in the position which adjoined in the height direction. In this case, when the X-ray imaging room is small, when the intra-oral X-ray apparatus is used, the arm portion deployed in the horizontal direction in the intra-oral X-ray apparatus may interfere with the jaw positioning unit of the X-ray imaging apparatus. Therefore, in this configuration, in the X-ray imaging apparatus, the jaw positioning unit that is disposed at a predetermined position between the X-ray generation unit and the X-ray detection unit that are opposed to each other is configured to be retractable from the predetermined position. Thereby, in the X-ray imaging apparatus, a space can be secured at a predetermined position by retracting the jaw positioning unit from the predetermined position. As a result, even when an X-ray imaging apparatus and an oral X-ray apparatus are provided in a narrow X-ray imaging room, X-ray imaging can be performed by deploying the arm portion of the oral X-ray apparatus using the space. As a result, interference between both devices can be easily avoided.

  Another characteristic configuration is that the jaw positioning portion is supported so as to be rotatable around the support column.

  As in this configuration, the jaw positioning unit can be easily retracted by retreating from the predetermined position by rotating the jaw positioning unit around the support column. Further, the jaw positioning unit can be easily returned from the retracted position to the predetermined position by rotating the jaw positioning unit around the support column. However, since the jaw positioning unit is disposed at a predetermined position between the X-ray generation unit and the X-ray detection unit arranged to face each other, the jaw positioning unit rotates when the jaw positioning unit rotates. It may interfere with the X-ray generation unit (or X-ray detection unit) existing on the side. In such a case, the jaw positioning unit is provided at a position lower than the lower end of the X-ray generation unit (or X-ray detection unit) so that the jaw positioning unit does not interfere with the X-ray generation unit (or X-ray detection unit). In addition, before rotating the jaw positioning unit, it is necessary to retract the X-ray generation unit (or X-ray detection unit) located on the side on which the jaw positioning unit rotates.

  The other characteristic configuration further includes a camera that is provided in any one of the X-ray generation unit and the X-ray detection unit and that can photograph a subject's jaw supported by the jaw positioning unit, One of the generation unit and the X-ray detection unit that does not have the camera is configured to be retractable from a position facing the other having the camera.

  According to this configuration, of the X-ray generation unit and the X-ray detection unit provided in the swivel arm, one that does not have a camera is configured to be retractable from a position that is opposed to the other that has a camera. With this configuration, for example, when the X-ray generation unit has a camera, the X-ray detection unit without the camera is retracted from the position opposite to the X-ray generation unit to detect the X-ray from the imaging region of the camera. The part can be removed. Further, when an X-ray imaging apparatus is used, a space for the operator can be secured at a position facing the camera across the subject, and the operator can adjust the apparatus from the side of the subject. It can be performed. As a result, the operator can easily position the head of the subject.

  Another characteristic configuration is that the rotation axis of the swivel arm is independent from a position where one of the X-ray generation unit and the X-ray detection unit that does not have the camera is opposed to the other that has the camera. It is in the point of retreating by moving around.

  With this configuration, for example, when the X-ray generation unit has a camera, the X-ray detection unit without the camera moves around the rotation axis of the swivel arm independently from the position where the X-ray generation unit is opposed to the X-ray generation unit. By evacuating, the X-ray detection unit can be removed from the imaging region of the camera. Also, one of the X-ray generation unit and the X-ray detection unit that does not have a camera moves around the rotation axis of the swivel arm, and the other that does not have a camera can be accommodated in the swivel region of the swivel arm. The dental X-ray imaging apparatus can be configured more compactly.

  Another characteristic configuration includes a base portion on which the column portion is erected, and the column portion is disposed at an end portion of the base portion in a plan view, and the base portion sandwiches the column portion and the end portion Two side edges that go to the center, the two side edges pass through the center of the support column, and each of the two side edges has an inclination of 45 degrees with respect to a center line that is axisymmetric, and two from the end side When the tangent lines are drawn toward the side edges, the base portion has only a convex portion from the contact point between the two tangent lines and the two side edges toward the side where the two tangent lines intersect. It is in.

  According to this configuration, the support column is disposed at the end of the base unit, the base unit has two side edges facing the end unit with the support column interposed therebetween, and the two side edges pass through the center of the support column. A tangent line is drawn to the two side edges based on the symmetrical center line, and only a convex portion is provided from the contact point between the tangent line and the two side edges toward the side where the two tangent lines intersect. In this way, for example, when the X-ray imaging apparatus is installed in an X-ray imaging room having two walls intersecting at right angles in plan view, the convex portion of the base portion is formed at the corner formed by the two walls. Can be easily brought close to each other. Thereby, the support | pillar part arrange | positioned at the edge part of a base part can be arrange | positioned near the corner | angular part of a X-ray imaging room. As a result, when the X-ray imaging apparatus is installed in the X-ray imaging room, the corners of the X-ray imaging room can be used effectively, and the occupation area of the X-ray imaging apparatus in the X-ray imaging room can be reduced. Can do.

It is a perspective view of a dental X-ray imaging apparatus. It is a partial side view of a dental X-ray imaging apparatus. It is a partial front view of a dental X-ray imaging apparatus. It is a block block diagram of a dental X-ray imaging apparatus. It is a plane sectional view showing the photography state by the 1st camera and the 2nd camera. It is a perspective view which shows the state which has a jaw positioning part in a predetermined position. It is a perspective view which shows the state which the jaw positioning part retracted. It is a top view which shows the positional relationship of the turning arm and jaw positioning part in FIG. It is a top view which shows the positional relationship of the turning arm and jaw positioning part in FIG. It is a top view which shows the shape of the base part arrange | positioned at the corner of an X-ray imaging room. It is a partial side view which shows the X-ray imaging apparatus of another form. It is a figure which shows the jaw positioning part of another form. It is a figure which shows the jaw positioning part of another form. It is a top view which shows the state which the jaw positioning part retracted.

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

  The dental X-ray imaging apparatus A shown in FIGS. 1 to 10 has a panoramic tomography mode and a CT tomography mode. The X-ray imaging apparatus A includes a swing arm 10 having an X-ray generation unit 2 and an X-ray detection unit 3, an arm support unit 20 that supports the swing arm 10 so as to be capable of swinging, and an arm support unit 20 that can be moved up and down. And a supporting column 30 to be provided. In the swivel arm 10, the X-ray generation unit 2 and the X-ray detection unit 3 are configured to be opposed to each other. The support column 30 includes a support column body 31 that is erected on a base unit 40 that is installed on the floor surface, and an elevating body 32 that is attached to the support column body 31 so as to be movable up and down. The arm support unit 20 is attached to the upper part of the lifting body 32 and moves up and down together with the lifting body 32. The elevating body 32 is configured to be movable up and down with respect to the column main body 31 via an elevating mechanism (not shown) such as a motor.

  The swivel arm 10 includes an X-ray generator 2 and an X-ray detector 3. The swivel arm 10 is attached to the arm support portion 20 so as to be pivotable about the rotation axis P. In the swivel arm 10, the X-ray generation unit 2 and the X-ray detection unit 3 are provided so as to face each other with the rotation axis P therebetween. The X-ray detection unit 3 is configured to be retractable from a position disposed opposite to the X-ray generation unit 2. In the present embodiment, the X-ray detection unit 3 is configured to be movable around the rotation axis P of the revolving arm 10 independently of the position facing the X-ray generation unit 2.

  The X-ray generation unit 2 includes an X-ray generator such as an X-ray tube and a slit or the like that regulates the spread of the X-ray beam, and the X-ray detection unit 3 includes an X-ray such as a CCD sensor that spreads two-dimensionally. It is constituted by a line detector.

  In the X-ray imaging apparatus A, the vertical direction in which the elevating body 32 moves up and down is set as the Z axis, the extending direction of the arm support portion 20 is orthogonal to the Z axis, and the direction orthogonal to the Z axis and the X axis (arm The swing arm 10 (rotary axis P) is configured to be movable in the X-axis direction and the Y-axis direction with respect to the arm support portion 20 when the horizontal direction of the support portion 20 is the Y-axis (see FIG. 1). Yes.

  A jaw positioning unit 50 that supports the jaw of the subject B is provided below the swivel arm 10. As shown in FIGS. 2 and 3, the jaw positioning unit 50 includes a support frame 51 and a main body 52. One end of the support frame 51 is attached to the lifting body 32, and the main body 52 is disposed on the other end of the support frame 51. Thereby, the jaw positioning part 50 is supported by the support | pillar part 30 so that raising / lowering is possible, and the turning arm 10 and the jaw positioning part 50 move up and down integrally with the raising / lowering body 32 moving up and down. The jaw positioning unit 50 is disposed at a predetermined position D between the X-ray generation unit 2 and the X-ray detection unit 3 that are arranged to face each other. In the present embodiment, the support frame 51 is supported so as to be rotatable around the support column 30, whereby the jaw positioning unit 50 is configured to be retractable from the predetermined position D.

  The body portion 52 of the chin positioning portion 50 is provided with a head fixing portion 53 for fixing the head of the subject B, and the support frame 51 is provided with a handle 54 for the subject B to grasp. The head fixing unit 53 includes a chin rest 55 for supporting the subject's B jaw and a pair of side head holders 56 in order to stably fix the head of the subject B during photographing. The temporal head retainers 56 are arranged on the left and right to fix the temporal head. The distance between the pair of side head holders 56 can be adjusted by a dial 57 provided on the side of the chin rest 55. A bite block 58 for opening subject B is provided at the top of the chin rest 55.

  A first camera 33 is attached in the vicinity of the support frame 51 of the jaw positioning unit 50, and a second camera 34 is provided in the X-ray generation unit 2 of the turning arm 10. The first camera 33 and the second camera 34 are provided for photographing a face part including the jaw part of the subject B supported by the jaw positioning part 50. In the present embodiment, the first camera 33 is provided on a camera support 35 attached to the lifting body 32. The support frame 51 extends from the camera support 35. The first camera 33 and the second camera 34 are configured not only as photographic cameras but also as video cameras capable of continuous shooting. The first camera 33 can photograph from the front direction of the jaw part of the subject B supported by the jaw positioning unit 50 and moves up and down together with the jaw positioning unit 50 to obtain an image of the front surface of the subject B jaw. . On the other hand, the second camera 34 acquires an image of the side surface of the jaw of the subject B by moving the X-ray generation unit 2 to the side position of the subject B in the turning arm 10.

  An operation panel 60 as a monitor unit is attached to the support frame 51 of the jaw positioning unit 50 via a bracket 51a. The operation panel 60 is attached to the support frame 51 so that the posture can be changed. The operation panel 60 is configured to be able to display captured images captured by the first camera 33 and the second camera 34. The operation panel 60 is constituted by, for example, a touch panel, icons for instructing various operations of the X-ray imaging apparatus A are displayed, and the operations are selected by touching the corresponding icons.

  In general, in panoramic X-ray photography, the head of a subject is positioned such that the Frankfurt plane is parallel to a horizontal plane (for example, a floor surface). The Frankfurt plane is a virtual plane connecting the left and right orbit lowermost points, which are front reference points, and the upper ends of both ear canals, which are rear reference points. It is known that when the Frankfurt plane is parallel to the horizontal plane, the occlusal plane tilts forward at an appropriate angle, so that the anatomical structure of the subject's jaw is clearly X-rayed in panoramic tomography. Therefore, as shown in FIG. 1, the X-ray imaging apparatus A has a line-of-sight derivative 70 for guiding the line of sight of the subject B above the first camera 33. The line-of-sight derivative 70 is disposed at a position lower than the position of the eye of the subject B on which the jaw is placed on the jaw positioning unit 50, and the subject B directly views the line-of-sight derivative 70 according to an operator's instruction or the like. B's head is tilted forward.

  Thereby, subject B's head can be positioned in order to make subject B's head into the optimal posture in X-ray photography using operation of subject B himself. As a result, it is possible to more easily position the head of the subject B. In the present embodiment, a circular seal body is attached to the elevating body 32 as the line-of-sight derivative 70. The line-of-sight derivative 70 may be provided not on the lifting body 32 but on the camera support 35 of the first camera 33. The shape of the line-of-sight derivative 70 is not limited to a circular shape, and may be other shapes such as a triangle and a quadrangle. The line-of-sight derivative 70 may be formed of a light emitter such as an LED instead of a seal body. The line-of-sight derivative 70 is formed by a YZ plane formed by the Z-axis that is the direction in which the elevating body 32 moves up and down and the Y-axis that is the width direction of the arm support 20 perpendicular to the Z-axis. The surface on which the first camera 33 of the camera support 35 is attached is directed upward rather than the plane on the lifting body 32 that is inclined to the subject B whose head is tilted forward. It may be attached to the surface extended.

  FIG. 4 is a block diagram of the X-ray imaging apparatus A. The X-ray imaging apparatus A is configured to include a control unit 80. The control unit 80 controls the X-ray generation unit 2, the X-ray detection unit 3, the turning arm 10, the lifting body 32, the first camera 33 and the second camera 34, the head fixing unit 53, and the like. The control unit 80 controls display on the operation panel 60 and can execute various controls based on instructions from the operation panel 60. The operation panel 60 is detachable from the support frame 51 and is configured to be able to communicate with the control unit 80 even in the detached state.

  Next, a method for using the X-ray imaging apparatus A will be described. Before guiding the subject B to the X-ray imaging apparatus A, the X-ray generator 2 and the X-ray detector 3 face each other from the state where the X-ray generator 2 and the X-ray detector 3 face each other, as shown in FIG. In contrast, the X-ray detection unit 3 that does not have the second camera 34 is independently moved around the rotation axis P of the turning arm 10. That is, as indicated by a two-dot chain line in FIG. 5, the X-ray detection unit 3 is on the right side of the subject B as with the X-ray generation unit 2, and the imaging region 33S of the first camera 33 and the imaging of the second camera 34 are performed. It is moved to a position that does not overlap any of the areas 34S. The X-ray detector 3 may be moved around the rotation axis P of the swivel arm 10 independently of the X-ray generator 2 after the subject B is guided to the X-ray imaging apparatus A.

  Thus, in the turning arm 10, the rotation of the turning arm 10 independently from the position where the X-ray detection unit 3 that does not have the second camera 34 is opposed to the X-ray generation unit 2 that has the second camera 34. Retreat by moving around the axis P. Since the X-ray detection unit 3 moves around the rotation axis P, the X-ray detection unit 3 can be accommodated in the turning area of the turning arm 10 even after retraction. Accordingly, the X-ray detection unit 3 can be removed from the imaging region 34S of the second camera 34. Further, a space for the operator can be secured at a position facing the second camera 34 across the subject B, so that the operator can adjust the X-ray imaging apparatus A from the side of the subject B and use the operation panel 60. A photographed image can be confirmed. As a result, the surgeon can easily position the head of the subject B.

  Next, the subject B is guided to the jaw positioning unit 50 of the X-ray imaging apparatus A, and the head of the subject B is positioned. The surgeon is positioned on the left side of the subject B where the X-ray detection unit 3 does not exist, and adjusts the X-ray imaging apparatus A while directly viewing the face side of the subject B. The surgeon adjusts the height of the chin rest 55 so that the jaw of the subject B is placed on the chin rest 55 and causes the subject B to bite the bite block 58. The head of the subject B is held in position by a pair of temporal head presses 56 whose intervals are adjusted by the dial 57.

  The surgeon finely adjusts the height of the chin rest 55 while referring to the front image of the subject B displayed on the operation panel 60 and the side image of the subject B. Then, the head of the subject B is tilted forward so that the subject's B gaze looks directly at the gaze derivative 70. Thereby, the head positioning of the subject B is completed. When the positioning of the head of the subject B is completed, camera scout designation for X-ray imaging is performed using the first camera 33 and the second camera 34.

  In the case of panoramic tomography, the median position is designated in the front image, and the canine position is designated in the side image. In the case of CT tomography, the imaging area in the left-right direction of the face is specified in the front image, and the imaging area in the front-back direction of the face is specified in the side image. When the control unit 80 receives designation of an imaging region from the operation panel 60, the control unit 80 transmits a control signal to the X-ray generation unit 2, the X-ray detection unit 3, and the turning arm 10. As a result, the X-ray generation unit 2 and the X-ray detection unit 3 move to a position where the designated imaging region can be imaged, and the X-ray irradiation region is adjusted in the X-ray generation unit 2, so that the X-ray detection unit 3, the X-ray detection area is adjusted. Thereafter, panoramic tomography or CT tomography is performed.

  In the present embodiment, when the X-ray imaging apparatus A is not in use, the X-ray generator 2 and the X-ray detector 3 are moved around the rotation axis P of the swivel arm 10 as shown in FIGS. And can be positioned on the side of the support column 30. By retracting both the X-ray generation unit 2 and the X-ray detection unit 3, the main body 52 of the jaw positioning unit 50 is exposed at the predetermined position D. From the state of FIG. 6 and FIG. 8, the jaw positioning unit 50 is rotated around the support column 30. Specifically, the support frame 51 and the main body 52 are integrally rotated around the support column 30. Thereby, the main body 52 of the jaw positioning unit 50 is retracted from the predetermined position D as shown in FIGS. 7 and 9. 6-9, the example which moves both the X-ray generation part 2 and the X-ray detection part 3 to the support | pillar part 30 side in order to retract the jaw positioning part 50 from the predetermined position D was shown. Only one of the line generation unit 2 and the X-ray detection unit 3 may be retracted from the opposing position.

  In the X-ray imaging apparatus A, X-ray imaging is performed by positioning the jaw of the subject B in an upright posture by the jaw positioning unit 50. In a dental clinic or the like, an intraoral X-ray apparatus for taking an X-ray photograph in the oral cavity is used separately from the X-ray imaging apparatus A, and the X-ray imaging apparatus A and the intraoral X-ray apparatus are provided in one X-ray imaging room. May be added. In the intraoral X-ray apparatus, an arm part equipped with an X-ray apparatus at the tip is supported by a column part so as to be rotatable in a horizontal direction, and the position of the arm part is adjusted with respect to a subject in a sitting posture, thereby An X-ray photograph is taken.

  The jaw positioning unit 50 of the X-ray imaging apparatus A is positioned below the jaw of the subject B in an upright posture. On the other hand, the arm part of the intraoral X-ray apparatus is usually positioned at the same height as the head of the subject in the sitting posture. Therefore, when the X-ray imaging apparatus A and the intraoral X-ray apparatus are provided together in the X-ray imaging room, the jaw positioning unit 50 of the X-ray imaging apparatus A and the arm unit of the intraoral X-ray apparatus have X-rays. They are arranged at close positions in the height direction of the imaging room. In this case, when the X-ray imaging room is small, the arm portion deployed in the horizontal direction may interfere with the jaw positioning unit 50 of the X-ray imaging apparatus A when the intraoral X-ray apparatus is used.

  Even in such a case, the X-ray imaging apparatus A of the present embodiment is configured so that the jaw positioning unit 50 can be retracted from the predetermined position D. Therefore, by retracting the jaw positioning unit 50 from the predetermined position D, A space can be secured at the predetermined position D. As a result, even when the X-ray imaging apparatus A and the oral X-ray apparatus are provided in a narrow X-ray imaging room, X-ray imaging is performed by using the space to expand the arm portion of the oral X-ray apparatus. Therefore, interference between both devices can be easily avoided.

  As shown in FIG. 10, the base portion 40 includes a mounting portion 41 on which the column main body 31 of the column portion 30 is mounted, and two leg portions 42 that extend from the mounting portion 41 in a bifurcated shape in the horizontal direction. , 43. In plan view, the column body 31 (column unit 30) is disposed at the end 41 a of the mounting unit 41 of the base unit 40. The base portion 40 has two side edges 44 and 45 from the leg portions 42 and 43 toward the end portion 41a with the column body 31 interposed therebetween. Here, in plan view, the angles θ1 and θ2 with respect to the center line E passing through the center 31a of the column main body 31 and the two side edges 44 and 45 being line symmetric have an inclination of 45 degrees, and the end portion 41a. When the tangent lines T1 and T2 that are in contact with the two side edges 44 and 45 are drawn from the side of the base, the base portion 40 is connected to the contacts S1 and S2 between the two tangent lines T1 and T2 and the two side edges 44 and 45, respectively. Only the convex part 46 is provided toward the side (intersection position Q) where the tangent lines T1, T2 intersect.

  With this configuration, for example, when the X-ray imaging apparatus A is installed in an X-ray imaging room R having two wall portions W1 and W2 that intersect perpendicularly in plan view, the corner formed by the two wall portions W1 and W2 It becomes easy to make the convex part 46 of the base part 40 approach the part C (refer FIG. 10). As a result, the X-ray imaging apparatus A can be disposed near the corner C of the X-ray imaging room R. As a result, when the X-ray imaging apparatus A is installed in the X-ray imaging room R, the corner C of the X-ray imaging room R can be used effectively, and the X-ray imaging apparatus A in the X-ray imaging room R can be used. Occupied area can be reduced. In FIG. 10, the base 40 is separated from the walls W1 and W2, but none of the swivel arm 10, the X-ray generator 2 and the X-ray detector 3 is in contact with the walls W1 and W2. If it is in the position, the X-ray imaging apparatus A can be installed with the two side edges 44 and 45 of the base portion 40 of the X-ray imaging apparatus A in close contact with the wall portions W1 and W2. Thereby, the occupation area of the X-ray imaging apparatus A in the X-ray imaging room R can be minimized.

[Another embodiment]
(1) In the above embodiment, the configuration in which the first camera 33 is provided on the camera support 35 attached to the lifting body 32 of the support column 30 is shown. However, as shown in FIG. You may attach to the stay 52a extended from the main-body part 52 of the positioning part 50. FIG. Although not shown, the first camera 33 may be attached to the support frame 51 of the jaw positioning unit 50 via a bracket 51a or the like.

(2) In the above embodiment, the chin positioning unit 50 has the chin rest 55 and the bite block 58 provided on the chin rest 55. However, as shown in FIG. A configuration in which the byte block 58 is extended from the main body 52 or the like without having it is also possible.

(3) The configuration in which the jaw positioning unit 50 can be retracted from the predetermined position D between the X-ray generation unit 2 and the X-ray detection unit 3 arranged to face each other is not limited to the above embodiment. For example, the jaw positioning unit 50 may be configured to be detachable from, for example, the support column 30, and the main body unit 52 may be configured to be detachable from the support frame 51. At the time of X-ray imaging, the jaw positioning part 50 or the main body part 52 of the jaw positioning part 50 is attached again.

(4) As shown in FIG. 12, the jaw positioning unit 50 may be configured so that the support frame 51 can extend and contract toward the lifting body 32 of the support column 30. Further, as shown in FIG. 13, the jaw positioning part 50 may be configured to be foldable in a direction in which the body part 52 side approaches the lifting body 32 of the column part 30 from the middle of the support frame 51. By configuring the jaw positioning unit 50 in this way, the jaw positioning unit 50 can be retracted from the predetermined position D without retracting the X-ray generation unit 2 and the X-ray detection unit 3 of the turning arm 10. In FIGS. 12 and 13, the first camera 33 and the operation panel 60 are omitted.

(5) As shown in FIG. 14, the X-ray imaging apparatus A may dispose the support column 30 on one wall W3 in the X-ray imaging room R. In this case, the jaw positioning part 50 in the first embodiment can be retracted to a position along the wall part W3 by rotating the support frame 51 around the support part 30.

(6) In the above embodiment, an example in which the second camera 34 is provided in the X-ray generation unit 2 of the revolving arm 10 has been described, but the second camera 34 may be provided in the X-ray detection unit 3.

(7) Of the X-ray generation unit 2 and the X-ray detection unit 3, the configuration in which one without the second camera 34 can be retracted from the position opposite to the other with the second camera 34 is described above. It is not limited to the embodiment. For example, one (X-ray generation unit 2 or X-ray detection unit 3) that does not have the second camera 34 may be configured to be detachable from the revolving arm 10. By removing one (the X-ray generation unit 2 or the X-ray detection unit 3) that does not have the second camera 34 from the turning arm 10, the other that does not have the second camera 34 can be retracted from the oppositely arranged position. In X-ray imaging, one (X-ray generation unit 2 or X-ray detection unit 3) that does not have the second camera 34 is attached to the turning arm 10 again. In addition, one (X-ray generation unit 2 or X-ray detection unit 3) that does not have the second camera 34 may be configured to be movable toward the upper side of the turning arm 10.

  The present invention can be widely used for X-ray imaging apparatuses for the head.

2: X-ray generation unit 3: X-ray detection unit 10: Revolving arm 20: Arm support unit 30: Supporting column 31: Supporting column body 31a: Center of the supporting column body 32: Lifting body 33: First camera 34: Second camera 35 : Camera support 40: Base part 41: Placement part 41a: End parts 44 and 45: Side edge 46: Convex part 50: Jaw positioning part 51: Support frame 52: Body part A: X-ray imaging apparatus B: Subject C : Corner part P: Rotating axis Q: Crossing position R: X-ray imaging room S1, S2: Contacts T1, T2: Tangent lines W1, W2, W3: Wall parts θ1, θ2: Angle

Claims (5)

A swivel arm including an X-ray generation unit and an X-ray detection unit capable of opposing arrangement;
An arm support that supports the swivel arm in a swivelable manner;
A support column that supports the arm support so as to be movable up and down;
A chin positioning unit that is supported by the support column so as to be movable up and down, and supports the jaw of the subject, and
The chin positioning unit is a dental X-ray imaging apparatus configured to be disposed at a predetermined position between the X-ray generation unit and the X-ray detection unit arranged to face each other and to be retractable from the predetermined position.   The dental X-ray imaging apparatus according to claim 1, wherein the jaw positioning unit is rotatably supported around the support column. A camera provided on any one of the X-ray generation unit and the X-ray detection unit and capable of photographing the jaw of the subject supported by the jaw positioning unit;
3. The configuration according to claim 1, wherein one of the X-ray generation unit and the X-ray detection unit that does not include the camera is configured to be retractable from a position that is opposed to the other that includes the camera. Dental X-ray equipment.   One of the X-ray generation unit and the X-ray detection unit that does not have the camera moves around the rotation axis of the swivel arm independently from a position opposed to the other having the camera. The dental X-ray imaging apparatus according to claim 3 evacuated. Comprising a base portion on which the column portion is erected,
In plan view, the support column is disposed at the end of the base unit, the base unit has two side edges facing the end unit across the support column, and passes through the center of the support column. When the side edge has an inclination of 45 degrees with respect to a center line that is line symmetric, and the tangent line is drawn from the side of the end portion toward the two side edges, the base portion has two lines. The dental X-ray imaging apparatus according to any one of claims 1 to 4, wherein the dental X-ray imaging apparatus has only a convex portion from a contact point between the tangent and the two side edges toward a side where the two tangents intersect.

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