JPH067711U - Horizontal full-jaw imaging device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To facilitate and ensure the alignment of the X-ray equipment of a physically handicapped patient. [Structure] A table 12 on which a patient lies down, and an X-ray imaging apparatus 1 for X-ray tomography of the entire jaw of the patient lying on the table 12.
4 and. A top plate 42 is provided on the table 12 so as to be vertically movable. The top plate 42 is attached to the upper frame 24 so as to be movable in the longitudinal direction. The clamp member 44 fixes and releases the top plate 42 and the frame 24. The head support member 46, which supports the patient's head, is fixed to the shaft 52, and the handle 54 is rotated. X-ray imaging apparatus 14
Is provided with light irradiating means 100, 102 and 104 for aligning the virtual dental arch with the patient's dental arch, and these means are provided on the patient's face, respectively, for the tomographic position index and ear plane line index and Irradiate a light beam that displays the midline index.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lateral full-jaw radiographing apparatus for X-ray tomography of the whole jaw of a patient lying on a table.

[0002]

[Prior art]

 Generally, an X-ray tomography photograph is used for diagnosis of treatment of a patient's teeth. As a device for obtaining an X-ray tomography photograph, there is a full-jaw radiography device for X-ray tomography of the whole jaw of a patient sitting on a chair.

A full-jaw imaging apparatus is a chair that is placed on a support surface such as a floor and holds a patient in a sitting position, and a tomography along a virtual dental arch drawn on a virtual plane perpendicular to the support surface. And an X-ray imaging device for X-raying a tomographic region along the dental arch of the patient by the movement. The X-ray imaging apparatus includes a tomographic position index indicating a tomographic position of an anterior tooth of the virtual dental arch and an eye-ear plane line index indicating one boundary in a height direction of a tomographic region of the virtual dental arch. , Showing a central axis that is orthogonal to the symmetry axis of the virtual dental arch and orthogonal to the virtual plane, and cooperates with the tomographic position index and the ear canal plane line index in cooperation with the virtual dental arch and the patient. A midline index forming an index for alignment with the dental arch is provided.

When performing X-ray tomography of the entire jaw of a patient, the dental arch of the patient sitting on the chair is aligned with the virtual dental arch of the X-ray imaging apparatus, and the alignment is performed. Is performed by matching the respective corresponding parts of the patient with the tomographic position index, the otoplanar plane line index, and the midline index of the X-ray imaging apparatus.

When aligning the dental arch of the patient sitting on the chair with the virtual dental arch of the X-ray imaging apparatus, the patient may use the X-ray so that the anterior tooth part thereof matches the tomographic position index. An operation of moving relative to the imaging apparatus, an operation of moving relative to the X-ray imaging apparatus so that the centerline of the patient's face matches the midline index, the orbit and ear of the patient The operation of moving relative to the X-ray imaging apparatus such that the center of the X-ray and the center of the X-ray are located on the plane of the auricle is alternately repeated. The anterior part of the patient is aligned with the fault position index, the vertical centerline of the patient's face is aligned with the midline index, and the patient's orbit and the center of the ear are located on the plane of the ear and ear, The alignment of the dental arch of 1. with the virtual dental arch of the X-ray imaging apparatus is completed.

Next, the X-ray imaging apparatus X-rays a tomographic region along the dental arch of the patient by the tomographic movement.

[0007]

[Problems to be solved by the device]

 However, in aligning the dental arch of the patient sitting on the chair with the virtual dental arch of the X-ray imaging apparatus, the X-ray imaging apparatus is arranged so that the corresponding parts by the patient themselves match the respective indexes. When the patient is an elderly person, an infant, or the like, it is necessary to perform a relative movement operation with respect to the relative movement, and thus the alignment may not be reliably performed. In addition, when the patient is physically handicapped and the patient is in a sitting position when the image is taken, it is difficult for the patient to maintain a certain posture for a long time, and it causes pain to the patient. Sometimes.

An object of the present invention is to easily and surely align a patient's dental arch with a virtual dental arch of an X-ray imaging apparatus without causing pain to a physically handicapped patient. The object is to provide a horizontal full-jaw imaging device.

[0009]

[Means for Solving the Problems]

 The present invention is a table that is placed on a support surface such as a floor surface and that mounts a patient who lies on it in a direction substantially parallel to the support surface, and a section along a virtual dental arch drawn on a virtual plane perpendicular to the support surface. An X-ray imaging apparatus for X-raying a tomographic region along the dental arch of the patient by a layer imaging motion, the horizontal all-jaw imaging apparatus, wherein the table is movably mounted on the support surface. A frame to be laid, a movably mounted vertically to the frame, a top plate for mounting the patient, and a rotatably mounted to the top plate about a horizontal axis to support the head of the patient. The X-ray imaging apparatus includes a head supporting member that is parallel to the virtual plane on which the virtual dental arch is drawn, and a tomographic position index indicating a tomographic position of the anterior tooth of the virtual dental arch. And the plane line of the ears and the ear showing the different planes, and orthogonal to the axis of symmetry of the virtual dental arch and A central axis orthogonal to the virtual plane is shown, and an index for aligning the virtual dental arch with the dental arch of the patient is shown in cooperation with the tomographic position index and the eye-ear plane line. Forming a midline index. The X-ray imaging apparatus is movably connected to the frame of the table in a direction parallel to the support surface and the virtual plane, and the top plate is attached to the frame so as to be horizontally movable.

[0010]

[Action]

 When the whole jaw of a patient is tomographically imaged by X-ray, the patient is mounted on the table, and the dental arch of the patient lying on the table is aligned with the virtual dental arch of the X-ray imaging apparatus. That is, the alignment is performed by matching the respective corresponding parts of the patient with the tomographic position index, the otic plane line index, and the midline index of the X-ray imaging apparatus.

When the dental arch of the patient and the virtual dental arch of the X-ray imaging apparatus are aligned, the operation of matching the anterior tooth part of the patient with the tomographic position index, and the center line of the face of the patient as the midline index , And the operation of positioning the orbit and the center of the ear of the patient on the plane of the ear canal.

When the anterior teeth of the patient and the fault position index are matched, the top plate of the table is attached to the frame so as to be vertically movable, so that the vertical movement of the top plate causes the patient to move. Since the height of the anterior tooth from the supporting surface is adjusted, the position of the anterior tooth of the patient can be matched with the tomographic position index by the operation of moving the top plate in the vertical direction.

When the centerline of the patient's face and the midline index are aligned, the platform is movably placed on the support surface so that the centerline of the patient's face is parallel to the support surface. Since it is moved on the surface, the center line of the patient's face and the midline index can be matched by the operation of moving the table.

When the orbit of the patient and the center of the ear are aligned with the eye-ear plane line index, the head support member supporting the patient's head is attached to the top plate so as to be rotatable about a horizontal axis. Since the tilt angle of the patient's neck is adjusted with respect to the support surface, the rotation of the head support member positions the patient's orbit and the center of the ear on the eye-ear plane line index. Can be made.

The patient's dental arch and the X-rays are moved by vertically moving the top plate, relatively moving the table and the X-ray device, and rotating the head support member. The alignment with the virtual dental arch of the imaging device is completed.

Next, the X-ray imaging apparatus uses X-rays to obtain a tomographic region along the dental arch of the patient by a tomographic movement along a virtual dental arch drawn on a virtual plane perpendicular to the support surface. Take a picture.

[0017]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an embodiment of a horizontal full-jaw imaging device of the present invention, FIG. 2 is a side view showing a base of the horizontal full-jaw imaging device of FIG. 1, and FIG. 3 is a front view showing a base of FIG. 4 is a front view showing an X-ray imaging apparatus of the horizontal full-jaw imaging apparatus of FIG. 1, FIG. 5 is a side view showing the X-ray imaging apparatus of FIG. 4, and FIG. 6 is a configuration of the X-ray imaging apparatus of FIG. FIG. 7 is a block diagram, FIG. 7 is a diagram showing a locus drawn when the arm axis of the X-ray imaging apparatus of FIG. 1 is moving, and FIG. 8 is a tomographic position index, an eye-ear plane index, and a midline index are the patient's face It is a figure which shows the state currently displayed.

As shown in FIG. 1, a horizontal full-jaw imaging apparatus 10 includes a table 12 on which a patient lies down, and an X-ray imaging apparatus 14 for X-ray tomography of the entire jaw of the patient lying on the table 12. With and.

The base 12 has a frame 18 movably placed on a floor 16 as shown in FIGS. The frame 18 includes a lower frame 22 to which four casters 20 are attached and an upper frame 24 arranged above the lower frame 22. A connecting pin 26 is provided on the lower frame 22, and the connecting pin 26 is arranged on the front side of the lower frame 22. The upper frame 24 is provided with a pair of shoulder rests 28, and the shoulder rests 28 are arranged on the front side of the upper frame 24 at intervals.

The upper frame 24 is vertically moved with respect to the lower frame 22 by an elevating mechanism. As shown in FIGS. 2 and 3, the lifting mechanism includes a pair of X-shaped connecting portions 30 that connect the lower frame 22 and the upper frame 24. Each connecting portion 30 is composed of a pair of elongated plate members 34 and 36 whose central portions are connected to each other by a shaft 32, and the lower end of one plate member 34 is connected to the lower frame 22 so as to be rotatable about a horizontal axis, The upper end is movably connected to the upper frame 24 along its longitudinal direction. On the other hand, the lower end of the other plate member 36 is movably connected to the lower frame 22 along its longitudinal direction, and the upper end thereof is rotatably connected to the upper frame 24 about a horizontal axis. The angle formed by the plate member 34 of each connecting portion 30 and the plate member 36 about the shaft 32 is adjusted according to the rotation angle of the handle 38 attached to the upper frame 24, and the rotation angle of the handle 38 is the shaft 40 of the handle 38. It is transmitted to each connecting portion 30 by a transmission mechanism (not shown) connected to the.

A top plate 42 is movably placed on the upper frame 24 in the longitudinal direction of the upper frame 24. The top plate 42 is an elongated plate member extending along the longitudinal direction of the upper frame 24. The top plate 42 and the upper frame 24 are fixed and released by a clamp member 44.

A head support member 46 is attached to the top plate 42. The head support member 46 is made of a plate material that projects outward in the longitudinal direction of the top plate 42, and a pad portion 48 is provided at an edge portion that faces outward. The pad portion 48 has an arc-shaped cross-sectional shape, and the protector 50 is attached to the pad portion 48 so as to be rotatable about a horizontal axis. An edge portion of the head support member 46 located on the top plate 42 side is fixed to the horizontal shaft 52, and both ends of the horizontal shaft 52 are supported by the top plate 42. The rotation angle of the horizontal shaft 52 is adjusted according to the rotation angle of the handle 54, and the rotation angle of the handle 54 is transmitted to the horizontal shaft 52 by a transmission mechanism 58 connected to the shaft 56 of the handle 38.

The X-ray imaging apparatus 14 has an arm 60, as shown in FIGS. 1 and 4 to 7. The arm 60 includes an elongated support member 62 and a shaft 64 extending in a direction orthogonal to the longitudinal direction of the support member 62. An X-ray generator 68 that irradiates X-rays from an irradiation port 66 and a cassette drive unit 70 that accommodates and moves a cassette (not shown) are attached to the support member 62 of the arm 60. The X-ray generator 68 and the cassette drive unit 70 are arranged on the support member 62 so as to face each other in the diameter direction of the shaft 64.

The arm 60 is driven by the driving means 72. The drive means 72 is housed in a case 74 placed on the floor surface 16. The driving means 72 rotates the shaft 64 about an axis perpendicular to the virtual plane while moving the shaft 64 along the virtual dental arch drawn on the virtual plane perpendicular to the support surface 16. An imaginary dental arch that determines the movement path of the axis 64 is represented by a curve drawn on an imaginary plane of XY coordinates, as shown in FIG. 7, and the curve is symmetric with respect to the axis of symmetry. The rotation angle of the shaft 64 is determined according to the position of the shaft 64 on the movement path.

The drive means 72, the X-ray generator 68 and the cassette drive section 70 are controlled by the control means 76 housed in the case 74. The control means 76 includes an X-axis control unit 78, a Y-axis control unit 80, a θ-axis control unit 82, an X-ray generator control unit 84, and a cassette control unit 86. The X-axis controller 78 gives an X-direction control signal 88 indicating the coordinate position of the shaft 64 in the X-direction to the driving means 72, and the Y-axis controller 80 indicates a Y-direction control signal 90 indicating the coordinate position of the shaft 64 in the Y-direction. To the drive means 72. The θ-axis control unit 82 supplies the drive means 72 with a rotation angle control signal 92 indicating a rotation angle corresponding to the coordinate position of the shaft 64 1. The X-ray generator control unit 84 generates a control signal 94 for controlling the start and stop of the X-ray generator 68, and the cassette control unit 86 generates a control signal 96 for controlling the movement of the cassette. Instructions to the control means 76 are given from an operation panel 98 arranged outside.

A virtual dental arch that determines the movement path of the axis 64 of the X-ray imaging apparatus 14 is displayed on the outside. The indices include a tomographic position index indicating the position of the anterior tooth portion of the virtual dental arch and the virtual dental arch. The eye-ear plane line index indicating a plane parallel to the virtual plane in which is drawn and the midline index indicating the central axis orthogonal to the symmetry axis of the virtual dental arch and orthogonal to the virtual plane are used. The fracture position index is displayed by the light emitted from the light emitting means 100 incorporated in the X-ray generator 68. The eye-ear plane line index is displayed by light rays emitted from the light emitting means 102 attached to the X-ray generator 68. The median line index is represented by a light beam emitted from the light emitting means 104 attached to the support member 62 of the arm 60. Each light emitting means 100, 102, 104 is positioned to display each index when the shaft 64 is in the initial position.

The case 74 is provided with a connecting portion 106 that is detachably connected to the connecting pin 24 of the base 12. The connecting portion 106 is attached to the case 74 and projects to the front side of the case 74. When the connecting portion 106 is connected to the connecting pin 24, the X-ray imaging apparatus 14 and the base 12 are integrally fixed to each other.

Before X-ray tomography of the patient's entire jaw is performed by the horizontal full-jaw imaging apparatus 10, the patient lies on the top plate 42 of the table 12, and the patient's head rests on the pad portion 48 of the head support member 46. Can be carried. Next, the protector 50 of the pad portion 48 is rotated so as to be positioned vertically above the patient's head, and the patient's head is protected by the protector 50. On the other hand, an imaging preparation command is given from the operation panel 98 to the control means 76 of the X-ray imaging apparatus 14. The X-axis control section 78, the Y-axis control section 80, and the θ-axis control section 82 of the control means 76 cooperate with each other to cause the drive means 72 to control the X-direction control signal 88, the Y-direction control signal 90, and the rotation with respect to the initial position of the arm 60. The angle control signal 92 is provided and the axis 64 of the arm 60 is positioned in the initial position. The initial position of the shaft 64 is a position where the longitudinal direction of the arm 60 is horizontal, as shown in FIG.

After the X-ray imaging apparatus 14 is ready for imaging, the table 12 is moved toward the X-ray imaging apparatus 14. The pin 24 of the base 12 is connected to the connecting portion 106, and the base 12 and the connecting portion 106 are integrally fixed to each other. Then, the top plate 42 of the table 12 is moved toward the X-ray imaging apparatus 14 together with the patient lying on it, and both shoulders of the patient are brought into contact with the corresponding shoulder pads 28. The patient's head is positioned between the x-ray generator 68 and the cassette drive 70.

Next, the dental arch of the patient lying on the table 12 and the virtual dental arch of the X-ray imaging apparatus 14 are aligned with each other. The light irradiating means 100, 102, 104 irradiate the patient's face with light rays. On the patient's face, as shown in FIG. 8, the tomographic position index indicated by the light beam from the light irradiation means 100, the eye-ear plane line index indicated by the light beam from the light irradiation means 102, and the light irradiation means 104 are detected. The midline index indicated by the rays of is displayed.

Next, the operation of matching the anterior tooth part of the patient with the tomographic position index, the operation of matching the center line of the patient's face with the midline index, and the orbit of the patient and the center of the ear are positioned on the plane of the ear canal. The action of causing is performed.

When the anterior teeth of the patient and the tomographic position index are matched, the handle 38 is rotated by the photographer. With the rotation of the handle 38, the upper frame 24 is moved vertically with the top plate 42 with respect to the lower frame 22. Since the height of the patient's front teeth from the floor surface 16 is adjusted by moving the top plate 42 in the vertical direction, the position of the patient's front teeth is used as a tomographic position index by the movement of the top plate 42 in the vertical direction. Will be matched.

When the center line of the patient's face and the midline index are matched, a command to match the center line of the patient's face and the midline index is given from the operation panel 98 to the control means 76. When the drive means 72 moves the shaft 64 in the X direction, the median line displayed by the light irradiation means 100 attached to the arm 60 is moved on a plane parallel to the floor surface 16. The movement in the X direction causes the centerline of the patient's face to coincide with the midline index.

When the orbit of the patient and the center of the ear are aligned with the eye-ear plane line index, the handle 54 is rotated by the photographer, and the head support member 46 is rotated about the axis 52 along with the rotation of the handle 54. It Since the tilt angle of the patient's neck is adjusted with respect to the floor surface 16 according to the rotation angle of the head supporting member 46, the operation of angularly rotating the head supporting member 46 causes the patient's orbit and the center of the ear to move. And are located on the eye-ear plane line index.

The operation of moving the top plate 42 in the vertical direction, the operation of moving the shaft 64 of the X-ray imaging apparatus 14 in the X direction, and the operation of angularly rotating the head support member 46 are repeated alternately, and The alignment of the dental arch of the present invention and the virtual dental arch of the X-ray imaging apparatus 14 is completed. As a result, the virtual dental arch of the X-ray device 14 and the patient's dental arch can be aligned with each other while the patient himself / herself is not lying down, and the physically handicapped person Positioning can be easily and reliably performed on patients such as the elderly, the elderly and young children.

After the alignment of the patient's dental arch with the virtual dental arch of the X-ray imaging apparatus 14 is completed, an imaging start command is given from the operation panel 98 to the control means 76. The X-axis control section 78 gives an X-direction control signal 88 to the driving means 72, the Y-axis control section 80 gives a Y-direction control signal 90 to the driving means 72, and the θ-axis control section 82 drives a rotation angle control signal 92. A means 72 is provided. The driving means 72 moves the shaft 64 based on the X-direction control signal 88, the Y-direction control signal 90 and the rotation angle control signal 92. The X-ray generator 68 is activated based on the control signal 94 generated from the X-ray generator control unit 84. The cassette drive unit 70 moves the cassette based on the control signal 96 generated from the cassette control unit 86. The axis 64 moves along an imaginary dental arch drawn in an imaginary plane perpendicular to the floor 16 while rotating about an axis perpendicular to the imaginary plane, and the fault region along the patient's dentition is It is displayed on the cassette.

[0037]

[Effect of device]

 According to the present invention, by the operation of vertically moving the top plate, the operation of relatively moving the table and the X-ray device, and the operation of angularly rotating the head supporting member, Since the patient's dental arch lying on the tabletop and the virtual dental arch of the X-ray imaging apparatus are aligned with each other, it is not necessary for the patient to perform an operation for the alignment itself, and the body is unfit. It is possible to easily and surely perform positioning with respect to a patient such as a free person, an elderly person or an infant without causing any pain.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a horizontal full-jaw imaging apparatus of the present invention.

FIG. 2 is a side view showing a base of the horizontal full-jaw imaging apparatus shown in FIG.

FIG. 3 is a front view showing the base of FIG.

FIG. 4 is a front view showing an X-ray imaging apparatus of the horizontal full-jaw imaging apparatus shown in FIG.

5 is a side view showing the X-ray imaging apparatus of FIG.

6 is a block diagram showing the configuration of the X-ray imaging apparatus in FIG.

7 is a diagram showing a virtual dental arch which is a movement path of an axis of an arm of the X-ray imaging apparatus of FIG.

FIG. 8 is a diagram showing a state in which a tomographic position index, an otoplanar plane line index, and a median line index are displayed on the face of a patient.

[Explanation of symbols]

 10 Horizontal full-jaw imaging device 12 units 14 X-ray imaging device 16 Floor surface 18 Frame 42 Top plate 100, 102, 104 Light irradiation means

Claims (2)

[Scope of utility model registration request] 1. A pedestal for placing a patient placed on a support surface such as a floor surface and lying on its side substantially parallel to the support surface, and a virtual dental arch drawn on a virtual plane perpendicular to the support surface. A tomographic motion is used to scan the tomographic region along the patient's dental arch.
A horizontal all-jaw radiographing apparatus including an X-ray radiographing apparatus for radiographing, wherein the platform is a frame movably placed on the support surface, and the frame is movably attached to the frame vertically And a head support member that is rotatably attached to the top plate about a horizontal axis and that supports the patient's head. The X-ray imaging apparatus includes the virtual tooth row. A fault position index indicating the fault position of the front tooth of the bow,
An ear-ear plane line index indicating a plane parallel to the virtual plane on which the virtual dental arch is drawn, and a central axis orthogonal to the axis of symmetry of the virtual dental arch and orthogonal to the virtual plane, A horizontal full-frame radiographing apparatus having a tomographic position index and a midline index that cooperates with the ocular-ear plane line to form an index for aligning the virtual dental arch and the patient's dental arch. 2. The X-ray imaging apparatus is movably connected to a frame of the base in a direction parallel to the support surface and the virtual plane, and the top plate is movably attached to the frame in a horizontal direction. The horizontal full-jaw imaging device according to claim 1.