TWI469768B - A dental x-ray photographic apparatus in the oral cavity - Google Patents

Description

Dental oral X-ray radiography device

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

As disclosed in Patent Document 1, a dental intraoral X-ray assisting tool (instructing portion) for use in tooth imaging using an X-ray device has been proposed. The dental intraoral X-ray assisting tool includes: a holding substrate which is in the form of a flat plate; a photoreceptor holding portion provided at an end portion of a portion where the holding substrate is inserted into the oral cavity at the time of photographing, and an X-ray having an X-ray element; The light receiving portion and the guiding portion (ring) are provided at positions facing the light receiving body holding portion via the holding substrate, and are used for positioning the X-ray irradiation port.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2004-174162

However, the fixation of the dental intraoral X-ray radiography apparatus is performed by the subject's occlusion, and there is a problem that the subject cannot be stably held when the subject cannot be engaged.

Accordingly, it is an object of the present invention to provide a dental intraoral radiography apparatus which can be held without being held by a subject.

A dental intraoral X-ray apparatus according to the present invention includes: a holding substrate; and a light-receiving portion provided at an end portion of the portion of the holding substrate that is inserted into the oral cavity when the X-ray device is used for imaging, for holding X An X-ray light receiving portion of the radiographic element; and a grip portion. The grip portion includes a bearing portion attached to the back surface of the photoreceptor holding portion, a ball portion supported by the bearing portion, a wrist portion connected to the ball portion, and a connection to the wrist portion or a transmission portion and other wrist portions. A clamping portion that is attached to the wrist. Moreover, the connecting portion can arbitrarily change the angle between the wrist and the other wrist. The photoreceptor holding portion is held by holding the nip portion so that the angle between the wrist portion and the imaging surface of the X-ray imaging element can be adjusted. Further, the grip portion has a power source for driving the X-ray radiographic element.

The grip portion of the grip portion may be in a form held by the subject or may be held by a practitioner such as a dentist, so that the X-ray light receiving unit can be used even if the subject cannot smoothly engage. Wait for it in the mouth. Moreover, since the member other than the grip portion of the dental intraoral X-ray apparatus (holding substrate and the light-receiving body holding portion) is held by holding the nip portion, the shape is held by the occlusion. It has an advantage that it can be easily held even if the weight of the substrate or the like is increased.

Moreover, compared with the holding substrate or the light-receiving body holding portion, the size of the nip portion of the grip portion is relatively loose, and it is easy to secure a space for internal electrical components such as batteries. Further, by concentrating the electric components as much as possible inside the nip portion, members other than the grip portion of the dental intraoral X-ray apparatus (holding substrate and light-receiving member holding portion) can be made light while being held In the case of the nip portion, members other than the grip portion of the dental intraoral radiography apparatus (holding substrate and light-receiving member holding portion) can be held in a stable state. Therefore, even in the case of performing image processing on the image signal obtained by the X-ray light receiving unit, it is possible to adopt a form built in the nip portion.

A dental intraoral X-ray apparatus according to the present invention includes: a holding substrate; and a light-receiving portion provided at an end portion of the portion of the holding substrate that is inserted into the oral cavity when the X-ray device is used for imaging, for holding X An X-ray light receiving portion of the radiographic element; and a grip portion. The grip portion includes a bearing portion attached to the bottom surface of the holding substrate, a ball portion supported by the bearing portion, a wrist portion connected to the ball portion, and a wrist portion connected or transmitted through the connecting portion and the other wrist portion and the wrist portion The nip portion to which the part is connected. Moreover, the connecting portion can arbitrarily change the angle between the wrist and the other wrist. By holding the nip portion, the holding substrate can be held in a state in which the angle between the wrist portion and the holding substrate can be adjusted. Further, the grip portion has a power source for driving the X-ray radiographic element.

The holding of the member other than the grip portion (the holding substrate and the photoreceptor holding portion) of the dental X-ray radiography apparatus can be performed by holding the grip portion of the ball joint provided on the back surface of the photoreceptor holding portion. It can also be carried out by holding the grip portion provided through the ball joint provided on the bottom surface of the holding substrate. In this case, since all the members for constituting the grip portion can be positioned outside the mouth at the time of photographing, the grip portion can hold the holding substrate while the wrist portion or the connecting portion is small.

Preferably, the clamping portion has a means for acquiring the X-ray imaging element by wireless technology The image signal is sent to the communication unit of the image processing device.

Further, the preferred holding portion has an image processing portion that applies image processing to the image signal obtained by the X-ray imaging device.

Further, it is preferable that the engagement portion is provided with a meshing clutch, and the angle between the wrist portion and the other wrist portion is arbitrarily adjusted by the meshing clutch.

A dental intraoral X-ray system according to the present invention includes: an observation device having a display portion that displays an X-ray image based on an image signal acquired by an X-ray imaging element, for observing an X-ray image; and the following dental use Intraoral X-ray radiography apparatus. The dental intraoral X-ray apparatus includes: a holding substrate; and a photoreceptor holding portion provided at an end portion of a portion of the holding substrate that is inserted into the oral cavity when the X-ray device is used for photographing, for holding the X-ray imaging element An X-ray light receiving portion; and a grip portion. The grip portion includes a bearing portion attached to the back surface of the photoreceptor holding portion, a ball portion supported by the bearing portion, a wrist portion connected to the ball portion, and a connection to the wrist portion or a transmission portion and other wrist portions. A clamping portion that is attached to the wrist. Moreover, the connecting portion can arbitrarily change the angle between the wrist and the other wrist. The photoreceptor holding portion is held by holding the nip portion so that the angle between the wrist portion and the imaging surface of the X-ray imaging element can be adjusted. Further, the grip portion has a power source for driving the X-ray radiographic element.

Preferably, the gripping portion has a first communication portion for transmitting a video signal to the observation device by wireless technology.

More preferably, the observation device has a second communication unit for communicating with the first communication unit, and the second communication unit has a structure that is integrated with the observation device.

Moreover, it is preferable that the observation apparatus includes an observation unit that is disposed in a movable state on the upper portion of the display unit and has a first observation filter and a second observation filter. In order to perform stereoscopic observation, the observation portion is disposed at the first position, and the display portion is displayed in a combined state: a first X-ray image viewed as one eye of the observer and another eye supplied as an observer In the second X-ray image to be observed, one of the observer's eyes can observe the first X-ray image through the first observation filter, and the other eye of the observer can observe the second X-ray image through the second observation filter. . When the stereoscopic observation is not performed, the observation portion is placed at the second position, and the observer's two eyes are placed. The display portion can be observed without passing through the first observation filter or the second observation filter.

As described above, according to the present invention, it is possible to provide a dental intraoral X-ray apparatus which can be held without being occluded by a subject.

(Best form of implementing the invention)

The configuration of the dental intraoral radiography system of the present embodiment will be described below with reference to the drawings. The dental intraoral X-ray system 1 of the present embodiment includes a first X-ray device 50a (or a second X-ray device 50b), a dental intraoral X-ray device 100, and an observation device 200 (see FIGS. 1 to 3). .

The dental intraoral X-ray radiography apparatus 100 includes a holding substrate 10, a grip portion 19, a light-receiving body holding portion 20, a first guide ring (guide portion) 30a, and a second guide ring (guide portion). 30b and the first display unit 40 (see FIGS. 2 and 3), and these portions constitute a dental intraoral radiography assisting tool (instruction unit).

Next, a detailed configuration of the first X-ray device 50a, the second X-ray device 50b, and the dental intra-oral radiography device 100 will be described.

The holding substrate 10 includes a main body portion 11 formed in a flat shape, a rotating shaft 12, an angle display portion 13, and a guiding holding portion 15. In the present embodiment, the main body portion 11 of the holding substrate 10 is formed in a substantially L shape from the upper surface for use in caries photography, but may be formed in a straight shape for front tooth imaging (not shown). .

The rotation shaft 12 is connected to the angle display unit 13 and the light-receiving body holding unit 20, and the rotation movement centering on the rotation shaft 12 of the light-receiving body holding portion 20 is transmitted to the angle display unit 13 through the rotation shaft 12, and the angle display unit 13 is provided. Rotate. Similarly, the rotational motion centering on the rotating shaft 12 of the angle display unit 13 is transmitted to the light-receiving body holding portion 20 through the rotating shaft 12 to rotate the light-receiving body holding portion 20 .

The angle display portion 13 is attached to a portion of the main body portion 11 of the holding substrate 10 that is not inserted into the oral cavity, and can be viewed from outside the oral cavity when the light-receiving body holding portion 20 is inserted into the oral cavity. Further, the angle display portion 13 is formed in a cylindrical shape, and the cylindrical portion (side surface) and the upper surface of the cylindrical shape are provided with a scale 14 including a plurality of symbol lines as a light receiving body. The information about the angle θ (see FIG. 6) between the holding portion 20 and the main body portion 11 of the holding substrate 10.

In the present embodiment, the information on the included angle θ is described using the scale 14 with seven symbol lines. 4 and 5 show that the six mark lines are located at a position protruding from the top surface of the main body portion 11 of the holding substrate 10 and one symbol line is hidden in the main body portion 11. Moreover, each mark line forms a note of a different color, a different character, etc., and it is easy to distinguish.

Moreover, depending on the positional relationship between the scale 14 and the main body portion 11 of the holding substrate 10, that is, according to the marking line closest to the reference position (for example, the top surface of the main body portion 11 of the holding substrate 10), it is not observed for insertion into the oral cavity. The angle θ between the light-receiving portion 20 and the main portion 11 of the holding substrate 10 can read the information about the angle θ, and can be used to perform the first guiding ring 30a when the first X-ray device 50a is disposed, which will be described later. The alignment in the positioning portion 31 or the alignment in the positioning portion 31 of the second guiding ring 30b when the second X-ray device 50b is disposed.

The guiding holding portion 15 is attached to the end portion of the main body portion 11 of the holding substrate 10 that is not inserted into the oral cavity, and holds the first guiding ring 30a or the second guiding ring 30b in an attachable and detachable state.

The light-receiving portion 20 is provided with a plate-shaped member having an X-ray light receiving portion 25 of an X-ray imaging element, a reference scale 26, a photographic element substrate 27, and a yoke 29, and is inserted in the main body portion 11 of the holding substrate 10. The end portion of the portion in the oral cavity is held in a state of being rotatable about the rotation axis 12 for adjusting the incident angle of the X-ray from the X-ray device 50.

The contact with the mouth flap MF in the oral cavity, that is, the top surface of the light-receiving member holding portion 20 and the upper portion of the front surface are preferably made of a soft material such as rubber. Thereby, compared with the case where such a portion is formed of a hard material, it is possible to alleviate the pain of the subject caused by contact with the flap MF. In the case where the light-receiving body holding portion 20 is provided separately from the X-ray light receiving portion 25, it is necessary to select the material of the upper portion. However, in the case where the X-ray light receiving portion 25 is built in the light receiving body holding portion 20, only the light receiving portion is considered. The material on the upper part of 20 can alleviate the pain of the subject caused by contact with the flap MF.

The X-ray light receiving unit 25 has a scintillator that converts X-rays into visible light, and an X-ray imaging element such as a CCD (Charge Coupled Device) that converts the visible light into electric charges. The reference scale 26 has a line segment having a constant length and a scale spaced from the 1 mm unit on the line segment, and is formed of a material that is not transparent to X-rays, and is disposed in front of the imaging surface of the X-ray light receiving unit 25 (X-ray device) 50 and between the X-ray light receiving unit 25).

The photographic element substrate 27 is a circuit for driving the X-ray light receiving unit 25 and is disposed behind the X-ray light receiving unit 25. However, the member constituting the circuit for driving the X-ray light receiving unit 25 may be disposed in a sandwiching portion 19e of the grip portion 19 to be described later or the image processing unit 230 of the observation device 200. The power supply and signal transmission and reception to the X-ray light receiving unit 25 are transmitted through the photographic element substrate 27 to the inside of the main body portion 11 of the holding substrate 10, and are transmitted through the cable 16 to be connected to the grip portion 19.

The yoke 29 is a thin plate made of a soft magnetic material, and is disposed behind the photographic element substrate 27 (the rearmost surface of the photoreceptor holding portion 20). Further, the yoke 29 can function to connect the bearing portion 19a and the light-receiving member 20 by the magnetic force of the magnet 19a1 of the bearing portion 19a to be described later, and the magnetic field of the magnet 19a1 does not leak to the surroundings (especially, the X-ray light receiving portion 25 side) The role of ).

The connection between the grip portion 19 and the photoreceptor holding portion 20 is performed by attracting the yoke 29 of the photoreceptor holding portion 20 with magnetic force by the magnet 19a1 of the bearing portion 19a. Therefore, as long as the tensile force exceeding the magnetic force is not received, the connection state is not released, and the grip portion 19 can stably hold the portion other than the grip portion 19 of the dental intraoral radiography apparatus 100. Further, as long as the tensile force exceeding the magnetic force is exceeded, the connection state can be released. Therefore, it is also advantageous in that it can be easily attached and detached compared to the state in which the screw or the like is used. In particular, in a state in which the ball portion 19b and the retainer 19a2, which are members constituting the ball joint, are attached, since the grip portion 19 and the photoreceptor holding portion 20 can be attached and detached, it is possible to prevent the detachment of the portion. Wear or deterioration. Further, the connection between the grip portion 19 and the photoreceptor holding portion 20 is performed by magnetic force, and has the advantage of being easily attachable and detachable, but may be a bearing that holds the grip portion 19 without presuming the attachment and detachment operation. Portion 19a and photoreceptor holding portion 20 The form in which the two are fixed or integrated.

The grip portion 19 has a bearing portion 19a, a spherical portion 19b, first to third arm portions 19c1 to 19c3, a first connecting portion 19d1, a second connecting portion 19d2, and a sandwiching portion 19e (see Fig. 6).

The bearing portion 19a is provided with a magnet 19a1 at a portion facing the back surface of the photoreceptor holding portion 20 (on one side of the yoke 29), and a retainer 19a2 having a spherical portion 19b on the opposite side (refer to FIG. 8). ).

The first arm portion 19c1 is a rod-shaped member in which one end portion is fixed to the spherical portion 19b and the other end portion is connected to the first connecting portion 19d1. Further, the angle between the first arm portion 19c1 and the bearing portion 19a can be arbitrarily changed by passing through the spherical portion 19b and the retainer 19a2 for forming the ball joint.

The second arm portion 19c2 is a rod-shaped member in which one end portion is connected to the first connecting portion 19d1 and the other end portion is connected to the second connecting portion 19d2. The third arm portion 19c3 is a rod-shaped member in which one end portion is connected to the second connection portion 19d2 and the other end portion is fixed to the nip portion 19e. Further, the first connecting portion 19d can hold the wrist portions in a state in which the angle between the first arm portion 19c1 and the second arm portion 19c2 can be arbitrarily changed and the angle can be fixed. The second connecting portion 19d2 holds the wrist portions in a state in which the angle between the second arm portion 19c2 and the third arm portion 19c3 can be arbitrarily changed and the angle can be fixed.

By changing the positional relationship between the first to third arm portions 19c1 to 19c3, the normal direction of the imaging surface of the X-ray light receiving unit 25 can be arbitrarily changed while holding the nip portion 19e. In other words, the user (practitioner or subject) holds the holding portion 19e and holds the light receiving body in a state in which the angle between the first wrist portion 19c1 and the imaging surface of the X-ray light receiving portion 25 can be adjusted. The holding portion 20.

The nip portion 19e is connected to the photographic element substrate 27 and the first display portion 40 via the cable 16, and has a first communication portion 19e1 and a battery 19e2 built therein.

The first communication unit 19e1 transmits and receives signals to and from the second communication unit 290 by wireless technology (wireless area network, Bluetooth (registered trademark) or the like). Specifically, the control signal sent from the image processing unit 230 is transmitted to the X-ray imaging device of the X-ray light receiving unit 25, or the image signal obtained by the X-ray light receiving unit 25 is transmitted to the image processing unit 230, or the image processing is performed. The part 230 is produced according to the image signal The raw image data is sent to the first display unit 40.

The battery 19e2 supplies electric power to each unit (the first communication unit 19e1, the X-ray light receiving unit 25, the photographic element substrate 27, the first display unit 40, and the like) of the dental intraoral X-ray imaging apparatus 100.

When imaging is performed by the first X-ray device 50a or the second X-ray device 50b, a portion of the holding substrate 10 and the light-receiving body holding portion 20 in which the X-ray light receiving portion 25 is built are inserted into the oral cavity of the subject, and the holding is performed. The portion 19 holds the dental intra-oral radiography apparatus 100 in a state in which the pinion of the subject tooth T is perpendicular to both of the holding substrates 10. At this time, the first guide ring 30a (or the second guide ring 30b) held by the angle display portion 13, the guide holding portion 15, and the guide holding portion 15 and the first display portion 40 are located outside the mouth. However, the angle between the pinion of the subject tooth T and the holding substrate 10 may not be a vertical angle.

The grip portion 19e of the grip portion 19 may be in a form held by the subject, or may be held by a practitioner such as a dentist. Therefore, even if the subject cannot smoothly engage, the X-ray can be performed. The light receiving unit 25 or the like is maintained in the oral cavity. Further, since the member other than the grip portion 19 of the dental intraoral X-ray radiography apparatus 100 (holding the substrate 10 and the light-receiving body holding portion 20) is held by holding the nip portion 19e, the occlusion is achieved by the occlusion The form to be held has an advantage that it can be easily held even if the weight of the substrate 10 or the like is increased.

Moreover, the size of the nip portion 19e of the grip portion 19 is looser than that of the holding substrate 10 or the light-retaining body holding portion 20, and it is easy to secure a space for electrically insulating components such as the battery 19e2 inside. Further, by concentrating the electric components as much as possible inside the nip portion 19e, members other than the grip portion 19 of the dental oral X-ray radiography apparatus 100 (the holding substrate 10 and the light-receiving member holding portion 20) can be made light. When the holding portion 19e is held, the members other than the grip portion 19 of the dental intraoral radiography apparatus 100 (the holding substrate 10 and the light-receiving member holding portion 20) can be held in a stable state. Therefore, even in the case of performing image processing on the image signal acquired by the X-ray light receiving unit 25, it is possible to adopt a form built in the nip portion 19e.

Further, since the yoke 29 is provided between the magnet 19a1 and the X-ray light receiving unit 25, the possibility that the magnetic force affects the X-ray light receiving unit 25 is small.

Further, since the magnet 19a1 is formed separately from the ball joint (the spherical portion 19b and the retainer 19a2), the shape of the magnet 19a1 can be a rectangular body or the like without requiring special processing.

Further, when performing imaging, it is preferably a portion of the dental oral X-ray radiography apparatus 100 inserted into the oral cavity of the subject (one portion of the holding substrate 10, one of the photoreceptor holding portion 20 and the grip portion 19) Covered with a waterproof case. Specifically, one of the holding substrate 10 and the light-receiving body holding portion 20 are covered by the first waterproof case 61, and one of the grip portions 19 including the bearing portion 19a and the ball portion 19b is covered with the second waterproof case 62 (refer to the figure). 7). Therefore, the bearing portion 19a and the light-receiving body holding portion 20 are in a state of being close to each other by the magnetic force in a state in which the first waterproof case 61 and the second waterproof case 62 are interposed.

When the force is applied to separate the first waterproof case 61 from the second waterproof case 62, the state in which both the bearing portion 19a and the light-receiving portion 20 are brought close to each other by the magnetic force can be easily released. In addition, it is possible to prevent the saliva or the like of the subject from entering the connection portion between the photoreceptor holding portion 20 and the holding substrate 10, and it is advantageous in that the remaining substrate 10 and the photoreceptor holding portion 20 are not cleaned, and the first replacement is performed. 1 waterproof housing 61 and second waterproof housing 62, which can be used by other subjects.

Moreover, the holding member (the holding substrate 10 and the light-receiving body holding portion 20) of the grip portion 19 of the dental intraoral X-ray radiography apparatus 100 can be held by the ball joint that is transmitted through the back surface of the photoreceptor holding portion 20. The holding portion 19 is held by gripping, and the grip portion 19 that is passed through the ball joint provided on the bottom surface of the holding substrate 10 can be gripped (see FIG. 9). FIG. 9 shows a state in which one arm portion 19c is attached to the spherical portion 19b and the sandwiching portion 19e, and the grip portion 19e is held, and the angle between the wrist portion 19c and the holding substrate 10 can be adjusted. A member other than the grip portion 19 of the dental intraoral X-ray radiography apparatus 100 (holding substrate 10 and photoreceptor holding portion 20) is held. In this case, since all the members for constituting the grip portion 19 can be positioned outside the mouth at the time of photographing, there is a state in which the wrist portion or the joint portion is small (for example, as shown in FIG. 9, there is one wrist portion without Under the connection portion, the grip portion 19 can also hold the holding substrate 10. Further, the grip portion 19 is not required to be covered by the second waterproof case 62.

Moreover, in the state in which the reamer is attached, the subject tooth T cannot be touched. Since the substrate 10 is held, a notch portion (or hole portion) 18 is provided at a position facing the imaging target tooth T at the time of imaging to avoid the reamer (see FIGS. 4 and 5).

The first guide ring 30a is disposed at a position opposed to the light-receiving portion 20 via the holding substrate 10, and is used for positioning of the X-ray device in X-ray imaging for obtaining a general X-ray image, specifically The positioning of the irradiation port 51a of the first X-ray device 50a is used. Further, the first guide ring 30a is formed into a vertically long substantially elliptical shape from the side of the photoreceptor holding portion 20.

The first guiding ring 30a is for positioning the first X-ray device 50a including the X-ray source LS such that the X-ray source LS is disposed in the X-ray receiving portion 25 as viewed from above the main portion 11 of the holding substrate 10. A position on the reference line LP perpendicular to the imaging surface on the center of the imaging surface and at a distance (200 mm) from the imaging surface (see Fig. 12).

The first X-ray device 50a is a device that irradiates X-rays from one X-ray source LS to the irradiation port 51a, and is used to acquire a two-dimensional X-ray image.

The irradiation port 51a of the first X-ray device 50a has a surface perpendicular to the central axis LX of the X-ray beam emitted from the X-ray source LS.

The first guide ring 30a is formed in a substantially circular arc shape from the side, and has a linear shape from the upper side, so that the irradiation port 51a of the first X-ray device 50a is placed at a predetermined position of the first guide ring 30a (right) When the position of the positioning mark of the positioning portion 31 corresponding to the mark line of the scale 14 closest to the reference position is obtained, the central axis LX of the X-ray beam emitted from the X-ray source LS is received by the X-ray from the upper side. The center of the imaging surface of the portion 25 (see Fig. 12).

Therefore, from the upper side of the main body portion 11 of the holding substrate 10, the irradiation port 51a is a reference line LP that passes through the center of the imaging surface of the X-ray light receiving unit 25 and is perpendicular to the imaging surface, and X-rays emitted from the X-ray source LS. The central axis LX of the bundle overlaps the positional relationship and is disposed in the vicinity of the first guide ring 30a.

The width of the first guide ring 30a is substantially the same as the diameter of the irradiation port 51a of the first X-ray device 50a.

Further, a linear first index 53a parallel to the central axis LX is provided on the side of the first X-ray device 50a, and the first index 53a and the first guide ring 30a are positioned. When the positioning of 31 is aligned with the mark, it can be easily performed. Registration (refer to Figure 10).

A positioning portion 31 is provided at a side portion of the first guide ring 30a. The positioning unit 31 describes information corresponding to the symbol line of the scale 14 of the angle display unit 13 (a plurality of positioning symbols), and the symbol line of the scale 14 having the corresponding relationship is preferably the same as the positioning symbol of the positioning unit 31. The color is displayed.

Further, the plurality of positioning marks are provided on the positioning portion 31 such that the positioning marks corresponding to the body portion 11 closest to the holding substrate 10 among the marks of the scale 14 can be aligned with the positioning marks. The central axis LX of the X-ray beam emitted from the X-ray source LS of the first X-ray device 50a is substantially perpendicular to the side of the main body portion 11 of the holding substrate 10: the X-ray receiving light is included in the photoreceptor holding portion 20. The bisector B of both the surface of the imaging surface of the portion 25 and the tooth axis of the subject tooth T.

In the present embodiment, seven positioning lines are provided corresponding to the scale 14 of the angle display unit 13, and the positioning unit 31 is provided with seven positioning marks.

When the angle θ is small, that is, when the imaging surface of the X-ray light receiving unit 25 is in a state close to the horizontal portion of the main body 11 of the holding substrate 10, the angle display portion 13 corresponding to the positioning mark that is away from the guiding holding portion 15 The mark line of scale 14 will be close to the reference position.

When the angle θ is large, that is, when the imaging surface of the X-ray light receiving unit 25 is in a state of being nearly perpendicular to the main body portion 11 of the holding substrate 10, the angle display portion 13 corresponding to the positioning symbol close to the guiding holding portion 15 is The mark line of scale 14 will be close to the reference position.

The first guide ring 30a is passed through the first attachment portion 33a provided at the lower portion of the ring portion, and is held in the detachable state and held by the guide holding portion 15. Preferably, the guiding holding portion 15 has a positioning member or a detachable fixing mechanism (not shown) for fixing the first mounting portion 33a of the first guide ring 30a at a predetermined position during mounting. .

The second guide ring 30b is disposed at a position opposed to the light-receiving portion 20 via the holding substrate 10, and is used for positioning of the X-ray device in X-ray photography for obtaining stereoscopic X-ray images. The positioning of the first irradiation port 51b1 and the second irradiation port 51b2 of the second X-ray device 50b is used. Further, the second guide ring 30b is formed into a vertically long substantially elliptical shape from the side of the light-receiving body holding portion 20.

The second guiding ring 30b is for positioning the second X-ray device 50b including the first X-ray source LS1 and the second X-ray source LS2 such that the first X-ray source LS1 passes through from above the main body portion 11 of the holding substrate 10. The reference line LP perpendicular to the imaging surface at the center of the imaging surface of the X-ray light receiving unit 25 is disposed at the 11th position P11 which is a second distance (30 mm) from the reference line LP and a first distance (200 mm) from the imaging surface. The second X-ray source LS2 is disposed at a 12th position P12 (see FIG. 13) that is line-symmetric with the 11th position P11 with the reference line LP as the axis of symmetry.

The second X-ray device 50b is a device that irradiates X-rays from the two X-ray sources (the first X-ray source LS1 and the second X-ray source LS2) through the irradiation ports (the first irradiation port 51b1 and the second irradiation port 51b2). In the case of obtaining a three-dimensional X-ray image. The first X-ray source (electron tube) LS1 that emits X-rays from the first irradiation port 51b1 and the second X-ray source (electron tube) LS2 that emits X-rays from the second irradiation port 51b2 are disposed at a distance between the distance and the human eye. The same 60 mm (twice the second distance) position, and the directions of the respective irradiation ports and the X-ray source (electron tube) are set such that the central axis of the X-ray beam emitted from the target of the first X-ray source LS1 (the first central axis LX1) and the central axis (second central axis LX2) of the X-ray beam emitted from the target of the second X-ray source LS2 intersect at a distance from the first distance (200 mm) of each of the electron tubes. In other words, when the first irradiation port 51b1 and the second irradiation port 51b2 are disposed in the vicinity of the second guide ring 30b, they intersect in the vicinity of the X-ray light receiving unit 25.

Different X-ray images can be acquired by X-ray irradiation from different positions (11th position P11 and 12th position P12), and stereo X-ray images can be observed by combining the X-ray images. Further, the directions of the first X-ray source LS1 and the second X-ray source LS2 are adjusted such that the axes of the X-ray beams (the first central axis LX1 and the second central axis LX2) are at a distance equal to the first distance (200 mm). By crossing and moving the imaging surface to such an intersection position, it is possible to reduce the possibility that X-rays are not necessarily irradiated to the imaging surface of the X-ray light receiving unit 25.

The first irradiation port 51b1 and the second irradiation port 51b2 are connected to each other, and one hole portion is formed.

The first irradiation port 51b1 of the second X-ray device 50b has a surface perpendicular to the central axis (the first central axis LX1) of the X-ray beam emitted from the first X-ray source LS1. The irradiation port 51b2 has a surface perpendicular to the central axis (second central axis LX2) of the X-ray beam emitted from the second X-ray source LS2.

The second guide ring 30b has a substantially circular arc shape from the side, and the side where the first irradiation port 51b1 and the second irradiation port 51b2 are in contact with each other forms a V shape from the top, and the second X-ray device is used. The first irradiation port 51b1 and the second irradiation port 51b2 of 50b are provided at a predetermined position of the second guide ring 30b (aligned with the positioning mark of the positioning portion 31 corresponding to the mark line of the scale 14 closest to the reference position) When viewed from above, the central axis of the X-ray beam emitted from the first X-ray source LS1 (the first central axis LX1) and the central axis of the X-ray beam emitted from the second X-ray source LS2 (the second central axis) Each of the LX2) passes through the center of the imaging surface of the X-ray light receiving unit 25 (see FIG. 13).

Therefore, from the top, the first irradiation port 51b1 and the second irradiation port 51b2 form a line on the reference line LP that passes through the center of the imaging surface of the X-ray light receiving unit 25 and is perpendicular to the imaging surface. The symmetrical positional relationship is disposed in the vicinity of the second guiding ring 30b.

The width of the second guide ring 30b is wider than that of the first guide ring 30a.

Further, a linear second index 53b parallel to the first central axis LX1 and the second central axis LX2 is provided on the side of the second X-ray device 50b, and the second index 53b and the second index are provided. When the positioning marks of the positioning portion 31 of the guide ring 30b are aligned, the alignment can be easily performed (see Fig. 11).

The positioning portion 31 is provided on the side portion of the second guide ring 30b, and the content of the positioning portion 31 is the same as that of the positioning portion 31 provided on the side portion of the first guide ring 30a. The positioning unit 31 describes information corresponding to the symbol line of the scale 14 of the angle display unit 13 (a plurality of positioning symbols), and the symbol line of the scale 14 having the corresponding relationship is preferably the same as the positioning symbol of the positioning unit 31. The color is displayed.

Further, the plurality of positioning marks are provided on the positioning portion 31 such that the positioning marks corresponding to the body portion 11 closest to the holding substrate 10 among the marks of the scale 14 can be aligned with the positioning marks. The central axis (first central axis LX1) of the X-ray beam emitted from the first X-ray source LS1 of the second X-ray device 50b and the central axis of the X-ray beam emitted from the second X-ray source LS2 (the second central axis LX2) The side of the body portion 11 of the holding substrate 10 is substantially perpendicular to the side: containing the light receiving body The holding portion 20 has a bisecting plane B in which both the surface of the imaging surface of the X-ray light receiving unit 25 and the tooth axis of the imaging target tooth T are built.

In the present embodiment, seven positioning lines are provided corresponding to the scale 14 of the angle display unit 13, and the positioning unit 31 is provided with seven positioning marks. 6 shows a state in which the symbol line in the middle of the seven symbol lines of the scale 14 displays the information of the angle θ, and the seven positioning marks of the positioning unit 31 are aligned with the mark line in the middle. The first irradiation port 51b1 and the second irradiation port 51b2 of the second X-ray device 50b are provided.

The second guide ring 30b is passed through the second attachment portion 33b provided at the lower portion of the ring portion, and is held in the detachable state and held by the guide holding portion 15. Preferably, the guiding holding portion 15 has a positioning member or a detachable fixing mechanism (not shown) for fixing the second mounting portion 33b of the second guiding ring 30b at a predetermined position during mounting. .

In the case where the first attachment portion 33a and the second attachment portion 33b have the same size, the positioning member or the fixing mechanism can be used in common between the first attachment portion 33a and the second attachment portion 33b.

The first display unit 40 is a display device that displays an X-ray image acquired by a camera operation (a two-dimensional camera operation, a first three-dimensional camera operation, and a second three-dimensional camera operation) or an X-ray image recorded on a recording medium, and is held. (fixed) the body portion 11 of the substrate 10 is held.

Next, the detailed configuration of the observation device 200 will be described. The observation device 200 includes a first operation unit 210, a second operation unit 220, a development processing unit 230, a second display unit 240, a drive unit 260, and an observation unit 270 (first observation filter 271, second observation filter) The slice 272) and the second communication unit 290 (see FIGS. 1 to 3).

The first operation unit 210 is an input device for inputting subject information or an instruction to start a photographing operation, and for example, a numeric key or an arrow key for inputting a subject's history number can be used.

The second operation unit 220 is an input device for switching the usage mode of the observation device 200. In the present embodiment, the second operation unit 220 has five keys for switching to the following five usage modes: a two-dimensional camera mode, and a two-dimensional X is taken. Radiographic image, and display such a two-dimensional X-ray image; three-dimensional camera mode, ingesting three-dimensional X-ray images, and displaying such three-dimensional X-ray images; two-dimensional observation mode, displaying two-dimensional X-rays recorded by the recording medium The line image; the three-dimensional observation mode displays the three-dimensional X-ray image recorded on the recording medium; and the white display mode, and the second display unit 240 is used as a display stand.

The video processing unit 230 includes a CPU (Central Processing Unit) or a DSP (Digital Signal Processor), and can control each unit of the observation apparatus 200, or apply image processing to the video signal acquired by the X-ray light receiving unit 25, or transmit the second image. The communication unit 290 communicates with the dental intraoral radiography apparatus 100.

The second display unit 240 is for displaying an X-ray image obtained by a photographing operation (two-dimensional photographing operation or three-dimensional photographing motion) or an X-ray image recorded by a recording medium, but displaying a white image when a white display mode is selected .

The drive unit 260 rotates the observation unit 270 to the first position P1 or the second position P2 by using the rotation axis 261 as an axis in accordance with the control of the image processing unit 230 in accordance with the usage mode. Therefore, the user can automatically switch through the observation unit 270 by using the second operation unit 220 to select the usage mode (the two-dimensional imaging mode, the two-dimensional observation mode, the three-dimensional imaging mode, the three-dimensional observation mode, and the white display mode). The state of the second display unit 240 and the state of the second display unit 240 are observed without observing the observation unit 270.

Specifically, when the three-dimensional imaging mode or the three-dimensional observation mode is employed, the driving unit 260 moves the observation unit 270 to the transmission surface of the first observation filter 271 or the second observation filter 272 of the observation unit 270 and the second The display unit 240 is substantially parallel (first position P1, see FIG. 3).

When the two-dimensional photographing mode, the two-dimensional observation mode, or the white display mode is employed, the driving unit 260 moves the observation unit 270 to the transmission surface of the first observation filter 271 or the second observation filter 272 of the observation unit 270. The second display unit 240 is substantially vertical (second position P2, see FIG. 2).

In other words, in order to perform stereoscopic observation, the observation unit 270 is disposed at the first position P1 (the transmission surface of the first observation filter 271 or the second observation filter 272 is substantially parallel to the second display unit 240). The second display unit 240 displays in a combined state: when the first X-ray image observed by one of the observers and the second X-ray image viewed by the other eye of the observer are displayed, the observer One of the eyes can observe the first X-ray image through the first observation filter 271, and the observer is another The second X-ray image can be observed through the second observation filter 272. When the stereoscopic observation is not performed, the observation unit 270 is disposed at the second position P2 (the transmission surface of the first observation filter 271 or the second observation filter 272 is substantially perpendicular to the second display unit 240), The second display portion 240 can be observed by the two eyes of the observer without passing through the first observation filter 271 or the second observation filter 272.

The observation unit 270 is a plate-like member that is disposed in a movable state in front of the display surface of the second display unit 240 (here, an upper portion), and has a first observation filter 271 and a second observation filter 272. The first observation filter 271 has a blue filter adhered thereto, and the second observation filter 272 has a red filter adhered thereto. In the present embodiment, the display surface of the second display unit 240 is oriented upward, but it may be in an upwardly inclined direction or a lateral direction.

When the three-dimensional imaging mode or the three-dimensional observation mode is used, the transmission surface of the first observation filter 271 or the second observation filter 272 (the surface on which the red filter or the blue filter is pasted) is formed and the second display portion is formed. The display surface of 240 is substantially parallel, and the observer (subject or practitioner) is observing the second display unit 240 through the first observation filter 271 and the second observation filter 272 through the left eye. The second display unit 240 is observed.

When the two-dimensional photographing mode or the two-dimensional observation mode or the white display mode is employed, the transmission surface of the first observation filter 271 or the second observation filter 272 (the surface to which the red filter or the blue filter is pasted) The display is substantially perpendicular to the display surface of the second display unit 240, and the observer (subject or practitioner) does not transmit the first observation filter 271 or the second observation filter 272, and observes the second display. Department 240.

Further, the second communication unit 290 of the observation device 200 may be configured separately from the other portions of the observation device 200. In this case, the second communication unit 290 is disposed inside the X-ray imaging room in which the dental intra-oral radiography apparatus 100 or the first X-ray apparatus 50a is provided, and the like is surrounded by lead or the like. It is surrounded by substances with strong radiation blocking ability. Further, the second communication unit 290 is connected to a portion other than the second communication unit 290 disposed outside the X-ray imaging room of the observation device 200 via a cable line (not shown).

Further, the observation device 200 may be a tablet type mobile information terminal. At this time, the touch panel type display unit (second display unit 240) may also serve as the first operation unit. 210 or the second operation unit 220.

Next, the operation sequence will be described.

When the two-dimensional X-ray image is taken, the second operation unit 220 is operated to set the two-dimensional imaging mode, and the first guide ring 30a is attached to the guide holding portion 15 through the first attachment portion 33a. Further, the portion of the dental intraoral radiography apparatus 100 to which the first introducer ring 30a is attached, including the photoreceptor holding portion 20, is inserted into the oral cavity of the subject having the subject tooth T, and the insertion operation is performed. In the following state, one of the holding substrate 10 and the photoreceptor holding portion 20 are covered with the first waterproof case 61, and one of the grip portions 19 is covered with the second waterproof case 62. Further, the observation unit 270 is disposed at the second position P2.

Further, the positional relationship between the photoreceptor holding portion 20 in the oral cavity and the main body portion 11 of the holding substrate 10 is determined depending on the shape of the oral cavity of the subject or the position of the X-ray radiography apparatus 100 in the dental oral cavity. Also determines the angle θ.

The user of the dental intra-oral radiography apparatus 100 observes the scale 14 of the angle display unit 13, and recognizes the marker line closest to the reference position, and aligns the first index 53a with the positioning portion 31 of the first guide ring 30a. The irradiation mark 51a of the first X-ray device 50a is provided for the positioning mark corresponding to the mark line.

When the first operation unit 210 inputs the history number of the number of the positioning (for example, three digits), the image processing unit 230 displays on the second display unit 240 that "the first X-ray device 50a is operated to start X-ray irradiation, and The specific key (for example, the return key) of the first operation unit 210 is pressed down.

When the X-ray irradiation from the first X-ray device 50a is started in accordance with the operation of the practitioner or the like, when the specific key is pressed down, the image processing unit 230 transmits the second communication unit 290 and the first communication unit 19e1 and The photographic element substrate 27 causes the X-ray light receiving unit 25 to perform a photographic operation (two-dimensional photographic operation), and the X-ray photographic element of the X-ray light receiving unit 25 captures visible light converted by the scintillator.

The video signal obtained by the two-dimensional camera operation is transmitted to the video processing unit 230 through the photographic element substrate 27, the first communication unit 19e1, and the second communication unit 290, and is received for display on the first display unit. 40 or the image processing of the X-ray image of the second display unit 240 is displayed on the first display unit 40 or the second display unit 240 2D image data. Moreover, the two-dimensional image data is also registered with the subject information such as the resume number, and the subject information may be superimposed on the image, or may be attached to the header of the image data, or may be used as part of the file name.

The two-dimensional video data after the video processing is transmitted to the first display unit 40 through the second communication unit 290 and the first communication unit 19e1, and the first display unit 40 displays the two-dimensional X-ray image. Further, the image-processed two-dimensional image data is also transmitted to the second display unit 240, and the second display unit 240 displays the two-dimensional X-ray image.

In the case of observing the two-dimensional X-ray image recorded on the recording medium, the second operation unit 220 is operated to set the two-dimensional observation mode. Further, the observation unit 270 is disposed at the second position P2. The video processing unit 230 reads the two-dimensional video data recorded on the recording medium, and displays the list in the second display unit 240, and further displays "Please use the first operation unit 210 to select the two-dimensional video data to be observed." When the first operation unit 210 is used to select the two-dimensional image data to be observed, the image processing unit 230 displays the two-dimensional X-ray image based on the selected two-dimensional image data on the first display unit 40 or the second display unit 240. .

When the three-dimensional X-ray image is taken, the second operation unit 220 is operated to set the three-dimensional imaging mode, and the second guide ring 30b is attached to the guidance holding portion 15 through the second attachment portion 33b. Further, the portion of the dental intraoral radiography apparatus 100 to which the second guide ring 30b is attached, including the photoreceptor holding portion 20, is inserted into the oral cavity of the subject having the subject tooth T, and the observation unit 270 is disposed. At the first position P1.

Further, the positional relationship between the photoreceptor holding portion 20 in the oral cavity and the main body portion 11 of the holding substrate 10 is determined depending on the shape of the oral cavity of the subject or the position of the X-ray radiography apparatus 100 in the dental oral cavity. Also determines the angle θ.

The user of the dental intra-oral radiography apparatus 100 observes the scale 14 of the angle display unit 13, confirms the marker line closest to the reference position, and aligns the second index 53b with the positioning portion 31 of the second guide ring 30b. The first irradiation port 51b1 and the second irradiation port 51b2 of the second X-ray device 50b are provided in the positioning mark corresponding to the mark line.

The X-ray device of the first X-ray source LS1 is sequentially performed by the second X-ray device 50b. X-ray irradiation of the second X-ray source LS2.

When the first operation unit 210 inputs the history number of the number of the positioning (for example, three digits), the video processing unit 230 displays "the second X-ray device 50b is operated to start the first X-ray source LS1" on the second display unit 240. The X-ray is irradiated, and a specific key (for example, a return key) of the first operation unit 210 is pressed down.

After the X-ray irradiation from the first X-ray source LS1 of the second X-ray device 50b is started in accordance with the operation of the practitioner or the like, when the specific key is pressed downward, the image processing unit 230 transmits the second communication unit 290. The first communication unit 19e1 and the photographic element substrate 27 cause the X-ray light receiving unit 25 to perform a photographic operation (first three-dimensional photographic operation), and the X-ray photographic element of the X-ray light receiving unit 25 captures visible light converted by the scintillator.

The video signal obtained by the first three-dimensional camera operation is transmitted to the video processing unit 230 through the photographic element substrate 27, the first communication unit 19e1, and the second communication unit 290.

Next, the image processing unit 230 displays "the second X-ray device 50b is operated to start the X-ray irradiation of the second X-ray source LS2, and presses the specific key of the first operation unit 210 downward (for example, return key)".

After the X-ray irradiation of the second X-ray source LS2 from the second X-ray device 50b is started in accordance with the operation of the practitioner or the like, when the specific key is pressed down, the image processing unit 230 transmits the second communication unit 290. The first communication unit 19e1 and the photographic element substrate 27 cause the X-ray light receiving unit 25 to perform a photographic operation (second three-dimensional photographic operation), and the X-ray photographic element of the X-ray light receiving unit 25 captures visible light converted by the scintillator.

The video signal obtained by the second three-dimensional camera operation is transmitted to the video processing unit 230 through the photographic element substrate 27, the first communication unit 19e1, and the second communication unit 290.

The second X-ray device 50b preferably includes an output device for outputting information for recognizing both the state in which the X-ray source LS1 emits the X-rays and the state in which the X-ray source LS2 emits the X-rays. For example, a display member (not shown) can recognize the X-ray emission of the first X-ray source LS1 and the X-ray emission of the second X-ray source LS2 from the outside, or a signal transmitting means for the second X-ray device. 50b outputs information about the observation device 200 (especially the image processing unit 230). For use In the case of the signal transmitting means, the image processing unit 230 recognizes whether or not the X-rays of the first X-ray source LS1 or the second X-ray source LS2 are emitted, and the image processing unit 230 has control of the first three-dimensional camera operation and the second three-dimensional camera operation. The advantage of time.

Further, in the present embodiment, the first three-dimensional camera operation and the second three-dimensional imaging operation are performed using the second X-ray device 50b having two X-ray sources. However, the following configuration may be employed: one X is used. The first X-ray device 50a of the radiation source performs the first three-dimensional state by aligning the first index 53a of the first X-ray device 50a with the positioning mark in the positioning portion 31 on one side of the second guide ring 30b. In the photographing operation, the second three-dimensional photographing operation is performed in a state in which the first index 53a of the first X-ray device 50a is aligned with the positioning mark in the positioning portion 31 of the other side portion of the second guide ring 30b.

The video signal output from the X-ray light receiving unit 25 in accordance with the first three-dimensional imaging operation is subjected to video processing by the video processing unit 230, and becomes the first three-dimensional video material that can be displayed on the first display unit 40 or the second display unit 240. The video signal output from the X-ray light receiving unit 25 in accordance with the second three-dimensional imaging operation is also subjected to video processing in the video processing unit 230, and becomes a second three-dimensional video material that can be displayed on the first display unit 40 or the second display unit 240. Further, the first three-dimensional image data and the second three-dimensional image data are also registered with the subject information such as the history number, and the subject information may be superimposed on the image, or may be attached to the header of the image data, or may be used as a header. Part of the file name.

The first three-dimensional video data and the second three-dimensional video data are transmitted to the first display unit 40 through the second communication unit 290 and the first communication unit 19e1, and the three-dimensional X-ray image is displayed on the first display unit 40 ( An image obtained by combining an X-ray image based on the first three-dimensional image data and an X-ray image based on the second three-dimensional image data). Further, the first three-dimensional image data and the second three-dimensional image data after the image processing are also sent to the second display unit 240, and the second display unit 240 displays the three-dimensional X-ray image (the X-ray image based on the first three-dimensional image data) And an image obtained by combining X-ray images based on the second 3D image data).

The X-ray image acquired by the X-ray light receiving unit 25 is also displayed on the second display unit 240 of the observation device 200. However, by using the first display unit 40, the subject can be observed close to the subject. The photographic result of the subject's tooth T. Especially by The X-ray image obtained by the image processing can be displayed on a part of the first display unit 40 of the dental intraoral radiography apparatus 100 that has been inserted into the oral cavity of the subject, so that the subject can be mistaken or photographed. The likelihood of the subject's teeth is reduced.

As for the display method of combining two X-ray images, several types can be cited as follows, and the image processing method differs depending on the respective display methods. In the present embodiment, the combination processing is performed on the display device (the first display unit 40 or the second display unit 240), that is, the video processing unit 230 transmits the first three-dimensional video data and the second three-dimensional video data to the first In the display unit 40 or the second display unit 240, the first display unit 40 or the second display unit 240 combines the first three-dimensional image data and the second three-dimensional image data to display the combined X-ray image. However, it is also possible to perform a combination process on the side of the image processing unit 230.

In the present embodiment, the combination processing displays an X-ray image based on the first three-dimensional image data and an X-ray image based on the second three-dimensional image data, and superimposes one of the X-ray images with red light and superimposes the blue light. An image of an X-ray image. When glasses having red and blue color filters are worn on the left and right, when viewing the image displayed on the first display unit 40, it appears to be a stereoscopic image. Further, in the video displayed on the second display unit 240, one eye is observed through the first observation filter 271, and the other eye is observed as a stereoscopic image when viewed through the second observation filter 272.

Further, the combination processing may be a mode in which the image is superimposed after the X-ray image based on the first three-dimensional image data and the X-ray image based on the second three-dimensional image data are polarized. In this case, the first observation filter 271 and the second observation filter 272 are provided with different polarizing films. When the polarized glasses are worn to observe the image displayed on the first display unit 40, it appears to be a stereoscopic image. Further, in the video displayed on the second display unit 240, one eye is observed through the first observation filter 271, and the other eye is observed as a stereoscopic image when viewed through the second observation filter 272.

Further, the combination processing may be an aspect in which an X-ray image based on the first three-dimensional image data and an X-ray image based on the second three-dimensional image data are alternately displayed. In this case, the first observation filter 271 and the second observation filter 272 are provided with an image. The liquid crystal shutter member that alternates between the time points and the field of view is alternately blocked. When the glasses including the liquid crystal blocking members that alternately block the left and right fields of view in synchronization with the image switching time points are worn, the images displayed on the first display unit 40 are observed to be stereoscopic images. Further, in the video displayed on the second display unit 240, one eye is observed through the first observation filter 271, and the other eye is observed as a stereoscopic image when viewed through the second observation filter 272.

When the three-dimensional X-ray image recorded on the recording medium is observed, the second operation unit 220 is operated to set the three-dimensional observation mode. Moreover, the observation unit 270 is disposed at the first position P1. The image processing unit 230 reads a combination group of the three-dimensional video data recorded on the recording medium, and displays the list in the second display unit 240, and further displays "Please use the first operation unit 210 to select the three-dimensional image data of the observation target. combination". When the first operation unit 210 is used to select a combination of the three-dimensional image data to be observed, the image processing unit 230 displays the combination of the selected three-dimensional image data on the first display unit 40 or the second display unit 240. As for the display method of combining two X-ray images, it is the same as the case of the above-described three-dimensional photographing mode.

When the X-ray film placed on the second display unit 240 is observed, the second operation unit 220 is operated to set the second display unit 240 to be used as a white display mode of the display stand. Further, the observation unit 270 is disposed at the second position P2, and the image processing unit 230 displays white on the second display unit 240. Thereby, the white light of the second display unit 240 can be made to be the back light, and the X-ray film placed on the second display unit 240 can be observed.

In the white display mode, a region in which the X-ray film is not placed on the display surface of the second display portion 240 (the size of the X-ray film to be placed) may be placed (the X-ray film is placed thereon). The outer side of the area shows a dark color such as black (shadowed) to darken the periphery to make it easy to see the X-ray film.

In the case of the present embodiment, since the teeth are the subject of the imaging, the first display unit 40 is preferably attached to the holding substrate 10 in a vertically long state. However, in the case where the X-ray image based on the first three-dimensional image data and the X-ray image based on the second three-dimensional image data are displayed side by side, it is preferable to mount the substrate on the holding substrate or the like in a horizontally long state. Therefore, the first display unit 40 can also display three-dimensional X-rays in response thereto. The state in which the longitudinally mounted state and the horizontally long mounted state are switched in the manner of the image is mounted on the holding substrate 10.

Although the second display unit 240 is intended to capture a tooth, it is preferable to mount the X-ray film of a horizontal length (15 cm × 30 cm) in the white display mode, and it is preferable to attach it to the observation apparatus 200 in a horizontally long state.

In the present embodiment, the two types of guide rings (the first guide ring 30a and the second guide ring 30b) for positioning the irradiation port of the X-ray device are held by the guide holding portion 15 of the holding substrate 10. The holding portion 15 of the holding substrate 10 is held in a state in which it can be replaced by attachment and detachment.

When the first guide ring 30a is attached to the guide holding portion 15, the first X-ray device 50a is disposed along the first guide ring 30a, so that the irradiation port 51a of the first X-ray device 50a can be positioned in the X direction. The front surface of the imaging surface of the ray receiving unit 25 is substantially front.

Further, by arranging the positioning marks of the positioning portion 31 corresponding to the mark line closest to the reference position (for example, the main body portion 11 of the holding substrate 10), the irradiation port 51a of the first X-ray device 50a is disposed, so that The central axis LX of the X-ray beam emitted from the X-ray source LS of the first X-ray device 50a is substantially perpendicular to the side of the imaging surface including the X-ray light receiving unit 25 built in the light receiving body holding portion 20. The bisector plane B of both the tooth axes of the target tooth T, and by the bisector method, the X-ray image of the subject tooth T can be obtained in a state close to the actual length.

When the second guide ring 30b is attached to the guide holding portion 15, the second X-ray device 50b is disposed along the second guide ring 30b, so that the first irradiation port 51b1 and the second X-ray device 50b can be placed. The irradiation port 51b2 is located at two obliquely front faces of the imaging surface facing the X-ray light receiving unit 25.

In addition, the first irradiation port 51b1 and the second irradiation port of the second X-ray device 50b are disposed as long as they are aligned with the positioning marks of the positioning portion 31 corresponding to the mark line closest to the reference position (for example, the main body portion 11 of the holding substrate 10). The irradiation port 51b2 allows the central axis (the first central axis LX1 and the second central axis LX2) of the X-ray beam emitted from the first X-ray source LS1 and the second X-ray source LS2 of the second X-ray device 50b to be self-side. It seems to be substantially perpendicular to the bisector B of the surface including the imaging surface of the X-ray light receiving unit 25 built in the light-receiving portion 20 and the tooth axis of the subject tooth T, and by the second In the aliquoting method, an X-ray image of the subject tooth T can be obtained in a state close to the actual length.

In addition, both the X-ray image based on the X-rays emitted from the first X-ray source LS1 and the X-ray image based on the X-rays emitted from the second X-ray source LS2 are observed by the observation unit 270 or the like. The person who is displayed, or who observes the two displayed side by side, can observe a stereoscopic X-ray image.

In particular, since the first observation filter 271 and the second observation filter 272 of the observation unit 270 are fixed to the observation device in which the second display unit 240 is provided, the second display below is observed from above the observation unit 270. The portion 240 can stereoscopically observe the stereoscopic X-ray image displayed on the second display unit 240 without wearing the stereoscopic glasses.

When the two-dimensional image is observed, the observation unit 270 is housed, and the second display unit 240 can be directly observed by observing the two-dimensional X-ray image without passing through the observation unit 270.

Further, since the reference scale 26 is also imaged together with the subject tooth T and included in the X-ray image, the target tooth T can be known while being compared with the image of the reference scale 26 included in the X-ray image. The actual length of the wait.

Further, in the present embodiment, the bisecting method is considered, that is, the shape of the side portion of the first guide ring 30a or the second guide ring 30b and the positioning symbol of the positioning portion 31 are determined such that the X-ray is made. The central axis LX of the beam (or the first central axis LX1 and the second central axis LX2) is substantially perpendicular to the side and includes the surface of the imaging surface of the X-ray light receiving unit 25 built in the light receiving body holding portion 20 The bisector B of both the tooth axes of the target tooth T. Although the present embodiment has been described in the above embodiment, it may be a form in which these matters are determined in consideration of other imaging methods.

For example, the shape of the side portion of the first guide ring 30a or the second guide ring 30b and the positioning symbol of the positioning portion 31 may be determined such that the central axis LX of the X-ray beam (or the first central axis LX1) The second central axis LX2) is substantially perpendicular to the surface including the imaging surface of the X-ray light receiving unit 25 built in the light-receiving body holding portion 20 from the side.

Further, in the embodiment, the X-ray light receiving unit 25 is built in the light-receiving unit 20, but the X-ray light receiving unit 25 may be omitted. The form that is held on the outside.

Further, in the present embodiment, the angle θ between the light-receiving body holding portion 20 and the main body portion 11 of the holding substrate 10 is changed, and the angle display portion 13 is used to display the angle θ outside the oral cavity. The light-receiving body holding portion 20 is fixed to the main body portion 11 of the holding substrate 10 to fix the angle θ. In this case, the rotation shaft 12 and the angle display portion 13 are not required, and the positioning portion 31 of the first guide ring 30a or the second guide ring 30b is formed to have only the optimum positioning mark corresponding to the fixed angle θ. .

Further, since the electrical connection between the X-ray light receiving unit 25 and the nip portion 19e is transmitted through the cable 16 provided inside the holding substrate 10, it is possible to reduce the contact of electrical components such as cables into the oral cavity of the subject. chance.

In addition, although the electric power supply to the X-ray light receiving unit 25 or the first display unit 40 has been described as being transmitted from the battery 19e2 through the cable 16, the power supply may be performed by another power source. For example, it is conceivable to supply electric power by a power generator such as a battery or a solar battery provided on the holding substrate 10. In the holding substrate 10, the light receiving plate of the solar cell can be disposed in a region that is not inserted into the oral cavity of the subject, and the X-ray radiography is mostly performed in a state where the indoor illumination light is turned on, and therefore can be based on the use of the illumination light. Power generation is performed to supply electric power to the X-ray light receiving unit 25 or the first display unit 40. In particular, in the X-ray radiography, the X-ray imaging element can be driven before or after the imaging, or the image display of the first display unit 40 can be performed. Therefore, the real-time display of the digital camera or the photometry or the ranging operation is performed. In addition, the necessity of power consumption is reduced, and the electric power generated by the illumination light can be stored in a secondary battery or the like to drive an X-ray image element or the like.

In the case where the battery 19e2 is used as in the present embodiment and the power generating device such as a solar battery is used, since the power can be supplied to the X-ray light receiving unit 25 or the like without using the AC power source, the AC power source is converted into the use. In the form of supplying electric power to the X-ray light receiving unit 25 or the like after the DC, it is also possible to suppress noise superimposition.

Further, at least one of the first operation unit 210, the second operation unit 220, the development processing unit 230, the second display unit 240, and the second communication unit 290 may be an individual using The form of one part of the computer may be a form of image processing on a software of a personal computer.

Further, in the present embodiment, between the dental intra-oral radiography apparatus 100 and the observation apparatus 200, a mode in which signal transmission and reception are performed using a wireless technique will be described. Thereby, there is no need to use for the purpose of signal transmission and reception between the dental intraoral radiography apparatus 100 located at a position close to the subject and the observation apparatus 200 located at a position away from the subject. By connecting the cables, the degree of freedom in the installation position of the observation device 200 can be improved, and the wiring can be easily performed. However, it is also possible to transmit and receive signals between the X-ray radiography apparatus 100 and the observation apparatus 200 in the dental oral cavity by using a cable. In this case, the power supply from the observation device 200 may be used to drive the dental intra-oral radiography apparatus 100 without providing the battery 19e2.

Further, in the case of capturing a three-dimensional X-ray image, the X-ray irradiation of the first X-ray source LS1 and the X-ray irradiation of the second X-ray source LS2 in the second X-ray apparatus 50b are manually switched, and this manual switching is performed. The first three-dimensional camera operation or the second three-dimensional camera operation is manually instructed. Although the above aspect has been described here, the second X-ray device 50b may be automatically operated in conjunction with the observation device 200.

For example, it is conceivable that signal transmission and reception are performed between the second X-ray device 50b and the observation device 200, and X-ray irradiation of the first X-ray source LS1 is switched by a signal from the image processing unit 230 of the observation device 200. The first three-dimensional camera operation and the second three-dimensional camera operation are performed in accordance with the X-ray irradiation of the second X-ray source LS2 in response to such switching. In this case, after the preparation of the dental oral X-ray radiography apparatus 100 and the second X-ray apparatus 50b, the first operation unit 210 or the second operation unit 220 is used, and the image processing unit 230 performs a series of photographs. Such a series of photographing operations can be performed by an instruction of the operation (the X-ray irradiation of the first X-ray source LS1, the first three-dimensional photographing operation, the X-ray irradiation of the second X-ray source LS2, and the second three-dimensional photographing operation).

In addition, the combined processing may also display X-ray images based on the first 3D image data and X-ray images based on the 2D 3D image data in a side by side manner. Shape. In this case, the glasses or the observation unit 270 are not used, and the two images are observed by the parallel method or the intersection method. Further, in the case where the stereoscopic image is not required, the observation device 200 may omit the member or function for displaying or observing the stereoscopic image such as the observation portion 270.

Further, the first and second connecting portions 19d1 and 19d2 may be a connecting mechanism that can arbitrarily rotate around a plurality of rotating shafts as a ball joint. However, the first and second connecting portions 19d1 and 19d2 may be arbitrarily rotated around a single rotating shaft as in the case of a meshing clutch (refer to FIG. 14 16). In this case, as long as there are two or more connection mechanisms, the normal direction of the imaging surface of the X-ray light receiving unit 25 can be arbitrarily changed while holding the nip portion 19e.

The cable 16 may be connected to the nip portion 19e by holding the inside of the substrate 10, but may be exposed from the back surface of the photoreceptor holding portion 20 to the outside, and may pass through the second arm portion 19c2 (or the third wrist) The inside of the portion 19c3) reaches the form of the nip portion 19e.

In this case, when the portion of the first arm portion 19c1 and the cable 16 that is exposed from the back surface of the photoreceptor holding portion 20 is substantially parallel to the rotating shaft 12, the outer casing of the dental cavity can be used by using one waterproof casing W. The radiographic apparatus 100 is inserted into a portion of the subject's mouth (one of the holding substrate 10, the photoreceptor holding portion 20, and one of the grip portions 19) at the time of imaging (see FIG. 16). Specifically, one portion of the substrate 10 (one portion of the main body portion 11), the photoreceptor holding portion 20, and the grip portion 19 including the bearing portion 19a and the spherical portion 19b are held by a single waterproof case W having a simple shape. Part of it is covered.

1‧‧‧ Dental intraoral radiography system

10‧‧‧Maintaining the substrate

11‧‧‧ Body Department

12‧‧‧Rotary axis

13‧‧‧Angle display

14‧‧‧ scale

15‧‧‧Guidance and retention department

16‧‧‧ Cable

18‧‧‧Gap section

19‧‧‧ grip

19a‧‧‧ Bearings

19a1‧‧‧ Magnet

19a2‧‧‧

19b‧‧‧Spherical Department

19c‧‧‧ wrist

19c1‧‧‧1st wrist

19c2‧‧‧2nd wrist

19c3‧‧‧3rd wrist

19d1‧‧1st connection

19d2‧‧‧2nd connection

19e‧‧‧ gripping department

19e1‧‧1st Communication Department

19e2‧‧‧Battery

20‧‧‧Photoreceptor holding unit

25‧‧‧X-ray receiving unit

26‧‧‧ benchmark scale

27‧‧‧Photographic element substrate

29‧‧‧ yoke

30a‧‧‧1st lead ring

30b‧‧‧2nd guide ring

31‧‧‧ Positioning Department

33a‧‧‧1st installation department

33b‧‧‧2nd Installation Department

40‧‧‧1st display

50a‧‧‧1st X-ray device

50b‧‧‧2nd X-ray device

51a‧‧‧Import

51b1‧‧‧1st irradiation port

51b2‧‧‧2nd irradiation port

53a‧‧‧1st indicator

53b‧‧‧2nd indicator

61‧‧‧1st waterproof enclosure

62‧‧‧2nd waterproof enclosure

100‧‧‧ Dental intraoral radiography equipment

200‧‧‧ observation device

210‧‧‧First Operation Department

220‧‧‧2nd Operation Department

230‧‧‧Image Processing Department

240‧‧‧2nd display

260‧‧‧ Drive Department

261‧‧‧Rotary axis

270‧‧ ‧ Observing Department

271‧‧‧1st observation filter

272‧‧‧2nd observation filter

290‧‧‧2nd Communications Department

B‧‧‧Secondary facets

LP‧‧‧From the top, the reference line passing through the center of the X-ray receiving section and perpendicular to the shooting surface

LS‧‧‧X-ray source

LS1‧‧‧1st X-ray source

LS2‧‧‧2nd X-ray source

LX‧‧‧ central axis

LX1‧‧‧1st central axis

LX2‧‧‧2nd central axis

MF‧‧‧ flap

P1‧‧‧1st position

P2‧‧‧2nd position

P11‧‧‧11th position

P12‧‧‧12th position

T‧‧‧Target teeth

W‧‧‧Waterproof case

θ‧‧‧An angle between the light-retaining portion and the body portion of the holding substrate

Fig. 1 is a configuration diagram of a dental intraoral radiography system of the present embodiment.

Fig. 2 is a perspective view of the dental intraoral radiography system when the first guide ring is attached.

Fig. 3 is a perspective view of a dental intraoral radiography system when a second guide ring is attached.

Fig. 4 is a perspective view of the dental intraoral radiography apparatus when the first guide ring is attached.

Figure 5 is a dental intraoral radiography apparatus when a second guiding ring is mounted Stereogram.

Fig. 6 is a side view showing the configuration of a dental intraoral X-ray apparatus and a second X-ray apparatus when the grip portion is attached to the photoreceptor holding portion.

FIG. 7 is a side view showing a configuration of a dental intraoral radiography apparatus and a second X-ray apparatus in which a grip portion is attached to a photoreceptor holding portion and a first waterproof case and a second waterproof case are mounted.

Fig. 8 is a side view showing the internal structure of the light-retaining body holding portion and the detailed configuration of the grip portion.

Fig. 9 is a side view showing the configuration of a dental intraoral radiography apparatus and a second X-ray apparatus when the grip portion is attached to the bottom surface of the holding substrate.

Fig. 10 is a perspective view of the first X-ray device.

Figure 11 is a perspective view of a second X-ray device.

Fig. 12 shows the configuration of the dental intraoral radiography apparatus and the first X-ray apparatus when the first guide ring is attached from the upper side of the holding substrate.

Fig. 13 is a view showing the configuration of the dental intraoral radiography apparatus and the second X-ray apparatus when the second guide ring is attached from the upper side of the holding substrate.

Fig. 14 is a perspective view showing a dental intraoral radiography apparatus in which the connection portion is a clutch mechanism and the cable is exposed from the back surface and wired to the wrist portion.

Fig. 15 is a view showing the dental intraoral X-ray apparatus of Fig. 14 as seen from above.

Fig. 16 is a view showing the dental oral X-ray apparatus of Fig. 14 with a waterproof case attached thereto, as viewed from above.

1‧‧‧ Dental intraoral radiography system

10‧‧‧Maintaining the substrate

19‧‧‧ grip

20‧‧‧Photoreceptor holding unit

30a‧‧‧1st lead ring

40‧‧‧1st display

50a‧‧‧1st X-ray device

100‧‧‧ Dental intraoral radiography equipment

200‧‧‧ observation device

210‧‧‧First Operation Department

220‧‧‧2nd Operation Department

240‧‧‧2nd display

260‧‧‧ Drive Department

261‧‧‧Rotary axis

270‧‧ ‧ Observing Department

271‧‧‧1st observation filter

272‧‧‧2nd observation filter

P2‧‧‧2nd position

Claims (9)

A dental intraoral X-ray apparatus comprising: a holding substrate; and a light-receiving portion provided at an end portion of the portion of the holding substrate that is inserted into the oral cavity when the X-ray device is used for imaging, for holding X-rays An X-ray light receiving unit of the photographic element; and a grip portion having a bearing portion attached to a back surface of the light receiving body holding portion, a ball portion supported by the bearing portion, and a wrist connected to the ball portion And a clamping portion connected to the wrist portion or connected to the wrist portion through the connecting portion and the other wrist portion; and the connecting portion can arbitrarily change the angle between the wrist portion and the other wrist portion; Holding the clamping portion, the photoreceptor holding portion is held in a state in which an angle between the wrist portion and the imaging surface of the X-ray imaging element is adjustable, and the clamping portion has a power source for driving the X-ray imaging element . A dental intraoral X-ray apparatus comprising: a holding substrate; and a light-receiving portion provided at an end portion of the portion of the holding substrate that is inserted into the oral cavity when the X-ray device is used for imaging, for holding X-rays An X-ray light receiving unit of the photographic element; and a grip portion; the grip portion having: a bearing portion attached to a bottom surface of the holding substrate; a ball portion supported by the bearing portion; and a wrist portion connected to the ball portion, And a clamping portion connected to the wrist portion or connected to the wrist portion through the connecting portion and the other wrist portion; and the connecting portion can arbitrarily change the angle between the wrist portion and the other wrist portion; by holding the The holding portion holds the holding substrate in a state in which the angle between the wrist portion and the holding substrate is adjustable, and the holding portion has a power source for driving the X-ray imaging element. The dental intraoral X-ray apparatus according to claim 1 or 2, wherein the clamping portion has a communication unit for transmitting the image signal obtained by the X-ray imaging device to the image processing device by wireless technology. . A dental intraoral X-ray apparatus according to claim 1 or 2, wherein the nip has an image processing unit that applies image processing to an image signal obtained by the X-ray element. The dental intraoral X-ray apparatus according to claim 1 or 2, wherein a meshing clutch is provided at the connecting portion, and an angle between the wrist portion and the other wrist portion can be arbitrarily adjusted by the meshing clutch. A dental intraoral radiography system comprising: a dental intraoral X-ray radiography apparatus and an observation apparatus; the dental intraoral X-ray imaging apparatus comprising: a holding substrate; and a photoreceptor holding portion disposed on the holding substrate The X-ray device performs an end portion of the portion inserted into the oral cavity for holding the X-ray light receiving portion having the X-ray imaging element; and a grip portion; wherein the grip portion has: is mounted on the photoreceptor holding portion a bearing portion on the back surface, a ball portion supported by the bearing portion, a wrist portion connected to the ball portion, and a clamping portion connected to the wrist portion or connected to the wrist portion and connected to the wrist portion; The connecting portion can arbitrarily change the angle between the wrist portion and the other wrist portion; by holding the clamping portion, the angle between the wrist portion and the imaging surface of the X-ray imaging element can be adjusted to hold The light receiving body holding portion; and the holding portion has a power source for driving the X-ray image element; and the observation device has a display for displaying an X-ray image based on the image signal obtained by the X-ray imaging device Department, used to observe X-ray images. A dental intraoral X-ray system according to claim 6, wherein the holding portion has a first communication portion for transmitting the image signal to the observation device by wireless technology. The dental intraoral X-ray system according to claim 7, wherein the observation device includes a second communication unit for communicating with the first communication unit, and the second communication unit is the observation device Another integrated structure. A dental intraoral radiography system according to claim 6 of the patent application, The observation device includes: an observation portion that is disposed on the upper portion of the display unit in a movable state and has a first observation filter and a second observation filter; and when the stereoscopic observation is performed, the observation portion is disposed In the first position, when the first X-ray image for observation by the observer and the second X-ray image for observation by the other eye of the observer are displayed in a combined state, the first position is displayed in a combined state. One of the observer's eyes can observe the first X-ray image through the first observation filter, and the other eye of the observer can observe the second X-ray image through the second observation filter; In the stereoscopic observation, the observation portion is placed at the second position, and the two eyes of the observer can observe the display portion without passing through the first observation filter or the second observation filter.