JP2017123896A - X-ray imaging apparatus in dental oral cavity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray imaging apparatus in a dental oral cavity in which the alignment with an X-ray apparatus can easily be made.SOLUTION: An X-ray imaging apparatus has an imaging unit having an X-ray imaging element; and an imaging aid having a retention unit for holding the imaging unit, and a guide unit connected with the retention part, provided in a position opposed to the imaging unit and used for positioning an X-rays irradiation unit during imaging using the X-ray apparatus. The retention unit has a first member being a member having an L-shape when viewed from the above, the L-shape that is one of two sides constituting the L-shape and attached with the imaging unit; and a second member being the other side of two sides constituting the L-shape and attached with the guide unit. The retention unit has a light emitting unit for applying a linear light toward the imaging unit, and the light emitting unit is positioned outside an oral cavity during imaging. The light emitting unit has at least one of a first light source unit for emitting linear light extending in the first direction perpendicular to the first member and the second member as the linear light, and a second light source unit for emitting the linear light extending in the second direction perpendicular to the first member and the first direction.SELECTED DRAWING: Figure 6

Description

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

  As in Patent Document 1, a dental intraoral X-ray imaging apparatus has been proposed that performs alignment by aligning an irradiation port of an X-ray apparatus with any of the positioning marks provided on the guide ring.

Japanese Patent No. 5124683

  However, in visual alignment, it is difficult to determine whether the irradiation port of the X-ray apparatus has actually been aligned with the positioning mark.

  Accordingly, an object of the present invention is to provide a dental intraoral X-ray imaging apparatus that can be easily aligned with an X-ray apparatus.

  A dental intraoral X-ray imaging apparatus according to the present invention is connected to an imaging unit having any one of an X-ray imaging element, an X-ray film, and an imaging plate, a retaining unit that holds the imaging unit, and a retaining unit. An imaging assisting tool having a guide unit provided to position the X-ray irradiation unit of the X-ray apparatus at the time of imaging using an X-ray apparatus including an X-ray source provided at a position facing the imaging unit, and an imaging unit The holding part is provided with a grip for holding one of the holding parts, and the holding part is a member having an L shape as viewed from above, and the L shape is one of the two sides constituting the L letter, and the photographing part is A first member to be attached and a second member to which the guide portion is attached which is the other of the two sides constituting the L shape, and one of the retaining portion and the grip is linear toward the photographing portion. A light-emitting part that irradiates the light, and the light-emitting part is located outside the oral cavity during imaging The light-emitting unit emits linear light extending in a first direction perpendicular to the first member and the second member as linear light, and the first member and the first member perpendicular to the first direction. And at least one of the second light source units that emit linear light extending in the second direction.

  The at least one of the light from the first light source unit and the light from the second light source unit is projected onto the face of the subject's face and the like, thereby aligning the imaging target tooth and the imaging unit that are difficult to see in the oral cavity (first (1 position alignment) can be easily performed.

  Preferably, an angle sensor that detects an angle formed by the imaging unit and the holding unit is further provided, and the light emitting unit includes a third light source unit that emits linear light whose inclination changes based on information from the angle sensor. .

  The tilting state of the photographing part which is in the oral cavity and is difficult to understand can be seen from the outside.

  A dental intraoral X-ray imaging apparatus according to the present invention is connected to an imaging unit having any one of an X-ray imaging element, an X-ray film, and an imaging plate, a retaining unit that holds the imaging unit, and a retaining unit. An imaging aid having a guide unit provided to position the X-ray irradiation unit of the X-ray apparatus at the time of imaging using an X-ray apparatus including an X-ray source provided at a position facing the imaging unit, and a retaining unit are , A member having an L-shape when viewed from above, and the L-shape is one of the two sides constituting the L-shape and the first member to which the photographing unit is attached and the two sides constituting the L-shape And the second member to which the guide portion is attached. The retaining portion has a light emitting portion that emits linear light toward the photographing portion. The light emitting unit is located outside and is suspended from the first member and the second member as linear light. A has a first light source portion for emitting a linear light extending in a first direction, at least one of the second light source unit for emitting a linear light extending in a second direction perpendicular to the first member and the first direction.

  As described above, according to the present invention, it is possible to provide a dental intraoral X-ray imaging apparatus that can be easily aligned with an X-ray apparatus.

It is a block diagram of the dental intraoral X-ray imaging apparatus and X-ray apparatus in this embodiment. It is a perspective view of a dental intraoral X-ray imaging apparatus. FIG. 2 is a perspective view of a dental intraoral X-ray imaging apparatus held by a user in a state where a grip is located below a retaining part and a light receiving part is located above the retaining part. It is a front view of the 1st light emission part containing the 1st light source part and the 2nd light source part. It is a perspective view of a dental intraoral X-ray imaging apparatus showing a state in which linear light is irradiated on a plane perpendicular to the x direction from a first light emitting unit including a first light source unit and a second light source unit. A dental intraoral X-ray imaging apparatus showing a state in which linear light is irradiated from a first light emitting unit including a first light source unit and a second light source unit in a state where an imaging unit or the like is inserted into the oral cavity of a subject. It is a perspective view. It is a front view of the 1st light emission part containing the 1st light source part, the 2nd light source part, and the 3rd light source part. A perspective view of a dental intraoral X-ray imaging apparatus showing a state in which linear light is irradiated onto a plane perpendicular to the x direction from a first light emitting unit including a first light source unit, a second light source unit, and a third light source unit. It is. The dental oral cavity showing a state in which linear light is irradiated from the first light emitting unit including the first light source unit, the second light source unit, and the third light source unit in a state where the imaging unit is inserted into the oral cavity of the subject. 1 is a perspective view of an X-ray imaging apparatus. It is a side view which shows the structure of an imaging | photography part, a photography auxiliary tool, and an X-ray apparatus. It is a top view which shows the structure of an imaging | photography part, an imaging assistance tool, and an X-ray apparatus. It is a perspective view of the dental intraoral X-ray imaging apparatus provided with two grips from the side where the back surface of the light emitting surface of the first light emitting unit can be seen. FIG. 3 is a perspective view of a dental intraoral X-ray imaging apparatus provided with two grips from the side where the light emitting surface of the first light emitting part can be seen, in which the grip shape is rounded and the grip is provided with the first light emitting part.

Hereinafter, the configuration of the dental intraoral X-ray imaging apparatus according to the present embodiment will be described with reference to the drawings. The dental intraoral X-ray imaging apparatus 1 according to this embodiment includes an imaging unit 10, a grip 30, and an imaging auxiliary tool (indicator) 50 (see FIG. 1).
In order to indicate the direction, the horizontal direction in which the photographing unit 10 and the bearing unit 31 of the grip 30 are arranged is the x direction, the horizontal direction in which the photographing unit 10 and the guide unit 59 are arranged is the y direction, and the vertical direction perpendicular to the x direction and the y direction is z. It is assumed that the direction is.

The imaging unit 10 includes an X-ray light receiving unit. The X-ray light receiving unit of the imaging unit 10 includes a scintillator that converts X-rays into visible light, and an X-ray imaging device such as a CCD that converts the visible light into electric charges.
Electric wires for supplying power to the X-ray light receiving unit and transmitting / receiving signals extend to the grip 30 through the inside of a retaining unit 55 described later.

  Further, instead of a mode in which signal transmission / reception from the X-ray light receiving unit is performed via a cable (not shown) built in the retaining unit 55, a mode in which the signal is transmitted wirelessly may be used. In this case, a device that performs wireless communication and a battery that drives the device and the X-ray imaging device are built in the imaging unit 10.

  The imaging unit 10 may be configured to hold an X-ray film in place of the configuration including the X-ray light receiving unit.

  The grip 30 is centered on the rotating shaft 53 through a bearing portion 31 (a part of the retaining portion 55 (the first member 55a extending in the x direction) also functions as a bearing of the rotating shaft 53) serving as a bearing for the rotating shaft 53. It is attached to the photographing assisting tool 50 in a state where it can be rotated to the right. The grip 30 supplies power to the angle sensor 54, the first light emitting unit 56, the light emitting device changeover switch 61, the control unit 37 that controls the X-ray image sensor, the first light emitting unit 56, the second light emitting unit 63, and the X-ray image sensor. A battery 39 to be supplied and an image processing device (not shown) for performing image processing on an image signal obtained by the X-ray image sensor are incorporated.

  A first lock mechanism 33 that controls the rotatable state of the grip 30 around the rotation shaft 53 is provided in the grip 30 (or the retaining portion 55). When the locked state by the first lock mechanism 33 is released, the grip 30 is brought into a rotatable state around the rotation shaft 53. When locked by the first lock mechanism 33, the grip 30 is fixed to the retaining portion 55 in a non-rotatable state around the rotation shaft 53. Even if the first locking mechanism 33 is locked and the grip 30 is fixed to the retaining portion 55, the rotation operation around the rotation shaft 53 of the photographing unit 10 is not limited.

  For example, when the grip 30 is fixed in a positional relationship such that the photographing unit 10 is located above the retaining unit 55 and the grip 30 is located below the retaining unit 55 when viewed from the side, When the imaging unit 10 is easily positioned, the grip 30 is fixed in a positional relationship such that the imaging unit 10 and the grip 30 are above the retaining unit 55, and the dental intraoral X-ray imaging apparatus 1 is turned upside down, It is easy to position the imaging unit 10 near the lower teeth.

  The grip 30 may be held by the subject or may be held by an operator such as a dentist. Since the photographing unit 10 and the like are held by gripping the grip 30, it is not necessary to bite the retaining unit 55 for holding the photographing unit 10 and the like, and the photographing is performed while keeping the mouth open. Is possible. For this reason, even when the subject cannot perform occlusion successfully, the X-ray imaging element or the like can be maintained in the oral cavity. Further, since the grip 30 holds the members other than the grip 30 of the dental intraoral X-ray imaging apparatus 1 (the imaging unit 10 and the imaging assistance tool 50 that holds the imaging unit 10), the members are held by occlusion. Compared to the form, there is an advantage that holding can be easily performed even if the weight of the retaining portion 55 and the like is increased. In addition, since the grip 30 is separated from the imaging unit 10, there is a merit that the hand holding the grip 30 is hardly affected by the radiation from the X-ray apparatus 70.

  By changing the angle (second angle θ2) formed by the grip 30 and the retaining portion 55, photographing is performed with a positional relationship (holding position of the grip 30) that is convenient for the person holding the grip 30 (subject or operator). The part 10 can be inserted into an appropriate position in the oral cavity.

  Further, by moving the grip 30, the position of the rotation shaft 53 in the oral cavity changes, and accordingly, the position where the imaging unit 10 and the retaining unit 55 come into contact with the intraoral site such as the palate changes. The angle (first angle θ1) formed by the imaging surface of the X-ray imaging device of the unit 10 and the retaining unit 55 also changes. Information about the first angle θ1 is shown in an angle display unit 57 provided outside the oral cavity as will be described later.

  Accordingly, it is possible to freely change the direction of the normal of the imaging surface of the X-ray imaging device of the imaging unit 10 with the grip 30 held. That is, when the user (operator or subject) holds the grip 30, the imaging unit 10 is held in a state where the first angle θ1 can be adjusted.

  Further, as will be described later, information on the first angle θ1 is acquired and controlled by an angle sensor 54 provided in the vicinity of the imaging unit 10 (or inside the retaining unit 55, the imaging unit 10, or the bearing unit 31). The unit 37 controls the light emitting device changeover switch 61 based on the information about the first angle θ1 from the angle sensor 54, and the battery is connected to one of the first light emitting device 63a to the fourth light emitting device 63d in the second light emitting unit 63. The power from 39 is supplied.

  Although the photographing unit 10 and the grip 30 are made rotatable with respect to the retaining unit 55, by using the rotation shaft 53 in common, it is possible to simplify the mechanism relating to the rotational movement. By simplifying, it becomes possible to easily hold the grip 30 correctly without breaking even a subject who is not familiar with it.

  In addition, the grip 30 is less limited in size than the retaining unit 55 and the photographing unit 10, and it is easy to secure a space in which electric parts such as the battery 39 are built. Further, by collecting as much electrical parts as possible inside the grip 30, it becomes possible to reduce the members (the imaging unit 10 and the imaging aid 50) other than the grip 30 of the dental intraoral X-ray imaging apparatus 1. When the grip 30 is gripped, it is possible to hold members (the imaging unit 10 and the imaging assisting tool 50) other than the grip 30 of the dental intraoral X-ray imaging apparatus 1 in a stable state.

  In the present embodiment, the grip 30 has been described as being configured by a single rod-shaped member having a polygonal prism shape, but two or more rod-shaped members and a joint member such as a ball joint are the two or more rod-shaped members. The form which is provided between them and changes the shape of the grip 30 by changing the angle formed by the two or more rod-shaped members may be used. However, from the viewpoint of simplification of the structure including durability, it is constituted by an integral rod-like member without providing such a joint member, and only by a rotating operation around the rotation shaft 53 in the bearing portion 31 provided at the end portion. A form in which the positional relationship between the grip 30 and the retaining portion 55 is determined is desirable.

  The polygonal column shape of the grip 30 may be a shape with rounded corners (see FIG. 13) so as to be easily gripped, or a substantially cylindrical shape.

  However, the holding of the dental intraoral X-ray imaging apparatus 1 is not limited to gripping using the grip 30, and the first light emitting unit 56 in the present embodiment is held even by holding by holding the holding unit 55 or the like. The effect of providing the portion 55 (or the grip 30) can be obtained.

  Next, details of the photographing assisting tool 50 will be described. The photographing assisting tool 50 includes a rotation shaft 53, a retaining part (retaining substrate) 55, a first light emitting part 56, an angle display part 57, and a guide part 59.

  The imaging unit 10 is attached to a connection unit 53 a on the rotation shaft 53. The connection portion 53a is provided at a portion inserted into the oral cavity of the retaining portion 55 during imaging using the X-ray apparatus 70 including the X-ray source LS, and an angle (first angle θ1) formed with the retaining portion 55 is set. The photographing unit 10 is held in a changeable state. The imaging unit 10 may be fixed to the connection unit 53a by screwing or the like, or may be configured to be attached to the connection unit 53a in a detachable state with a part of the imaging unit 10 being sandwiched. The part 10 and the rotating shaft 53 may be integrally formed.

  When the imaging unit 10 is attached to the connection unit 53a and the imaging unit 10 rotates around the rotation shaft 53 within the range necessary for imaging, the imaging unit 10 and the connection unit 53a do not interfere with the retaining unit 55. As such, the dimensions of these members are determined.

  The rotating shaft 53 has the photographing unit 10 attached to one end via a connecting portion 53a, the angle display portion 57 attached to the other end, and the rotating shaft 53 of the photographing unit 10 attached to the connecting portion 53a. Is transmitted to the angle display unit 57 via the rotation shaft 53, and the angle display unit 57 is rotated. Similarly, the rotational movement about the rotation shaft 53 of the angle display unit 57 is transmitted to the imaging unit 10 attached to the connection unit 53 a via the rotation shaft 53 to rotate the imaging unit 10. Further, a biasing member 53b such as a spring is provided on the rotary shaft 53 or the like so that a biasing force is applied so that the front side of the photographing unit 10 attached to the connection unit 53a approaches the upper surface of the retaining unit 55 ( FIG. 11).

  Further, the grip 30 is provided with a second lock mechanism 35 that controls the rotatable state of the photographing unit 10 around the rotation shaft 53. When locked by the second lock mechanism 35, the first angle θ <b> 1 does not change, and when the locked state by the second lock mechanism 35 is released, the imaging unit 10 rotates with an urging force. Since the grip 30 and the photographing unit 10 share the rotation shaft 53, it is possible to provide the grip 30 with a structure including an operation button interlocked with the second lock mechanism 35. The second lock mechanism 35 can easily adjust the positional relationship between the photographing unit 10 and the retaining unit 55.

  The retaining part 55 is a member having a substantially L shape when viewed from above, and the photographing part 10 is attached to one end of the retaining part 55 (the first member 55a extending in the x direction) via the rotation shaft 53. The guide portion 59 is attached to the other end (the second member 55b extending in the y direction).

  The first light emitting unit 56 is attached to the upper part of the first member 55a, and emits linear light extending in the z direction (first direction) toward the photographing unit 10, and y It has the 2nd light source part 56b which irradiates the linear light extended in a direction (2nd direction).

The linear light extending in the z direction by the first light source unit 56a is perpendicular to the first member 55a that configures the retaining unit 55 and extends in the x direction and the second member 55b that extends in the y direction.
As shown in FIG. 4 etc., the 1st light source part 56a may be a form constituted by a plurality of point light sources arranged in the z direction, a form constituted by a linear light source extending in the z direction, The form comprised by the slit extended in the z direction provided in the front surface of the surface light source and the said surface light source may be sufficient.

The linear light extending in the y direction by the second light source unit 56b is perpendicular to the linear light extending in the z direction by the first member 55a and the first light source unit 56a.
As shown in FIG. 4 etc., the 2nd light source part 56b may be a form constituted by a plurality of point light sources arranged in the y direction, a form constituted by a linear light source extending in the y direction, The form comprised by the slit extended in the y direction provided in the front surface of the surface light source and the said surface light source may be sufficient.

In the perspective view of FIG. 6, it appears that a part of the light is bent because it is applied to the surface of the subject's face, but when viewed from the X direction, the light from the first light source unit 56 a is also the second light source unit. The light from 56b also appears straight (see FIG. 5).
Therefore, when a plane substantially perpendicular to the x direction is disposed between the first light emitting unit 56 and the imaging unit 10, a linear shape extending in the z direction as light emitted from the first light source unit 56a on the plane. Is projected, and linear light extending in the y direction is projected as light emitted from the second light source unit 56b.

  From the x direction, the light of the first light source unit 56a and the light of the second light source unit 56b are projected onto the surface of the subject's face, etc., so that the light of the first light source unit 56a and the light of the second light source unit 56b are projected. While aligning the linear light extending in the z direction and the side portion of the imaging target tooth with a parallel positional relationship while viewing at least one of them, alignment of the imaging target tooth with the imaging unit 10 that is difficult to see hidden within the oral cavity ( (First alignment) can be easily performed.

Further, the first light emitting unit 56 includes a third light source unit 56c in which a plurality of point light sources are arranged in a matrix on the yz plane, and the third light source unit 56c is configured based on information from the angle sensor 54. Among the point light sources to be emitted, light corresponding to a line (a line parallel to the side of the photographing unit 10) matched with the tilt state (first angle θ1) of the photographing unit 10 is emitted, that is, the third light source unit 56c. Further, it may be configured to emit linear light whose inclination changes based on information from the angle sensor 54 (see FIGS. 7 to 9).
In FIG. 7, the point light source that is turned on is shown in white, and the point light source that is turned off is shown in black.

  When the first angle θ1 is small, that is, when the imaging surface of the imaging unit 10 is nearly parallel to the upper surface of the retaining unit 55, a linear shape that is nearly perpendicular to the linear light emitted from the first light source unit 56a. Emits the light.

  When the first angle θ1 is large, that is, when the imaging surface of the imaging unit 10 is in a state close to perpendicular to the top surface of the retaining unit 55, the linear shape that is nearly perpendicular to the linear light emitted from the second light source unit 56b. Emits the light.

  When a plane substantially perpendicular to the x direction is disposed between the first light emitting unit 56 and the photographing unit 10, linear light extending in the z direction as light emitted from the first light source unit 56a on the plane. Is projected, linear light extending in the y direction is projected as light emitted from the second light source unit 56b, and linear light overlapping the side surface of the imaging unit 10 is projected as light emitted from the third light source unit 56c. Is displayed (see FIG. 8).

  By the third light source unit 56c, the tilt state of the imaging unit 10 which is in the oral cavity and is difficult to understand can be understood from the outside.

  The control of turning on and off the first light emitting unit 56 may be linked to an on / off operation of a main power switch (not shown) or the like (the first light emitting unit 56 is always lit when the main power is on). Alternatively, a lighting operation button 58 for operating to turn off or turn off may be provided in the vicinity of the first light emitting unit 56 (for example, the upper surface of the first light emitting unit 56) (see FIGS. 1 to 3).

  In the present embodiment, when the first light emitting unit 56 and the second light emitting unit 63 are turned on by operating the lighting operation button 58, the first light source unit 56a and the second light source unit 56b in the first light emitting unit 56 are turned on. The light source corresponding to the first angle θ1 of the third light source unit 56c in the first light emitting unit 56 is turned on, and the light emitting device corresponding to the first angle θ1 of the second light emitting unit 63 is turned on. When the first light emitting unit 56 and the second light emitting unit 63 are turned off by the operation of the lighting operation button 58, they are turned off.

  In the state where the reamer is attached, the imaging target tooth cannot come into contact with the retaining portion 55. Therefore, in order to avoid the reamer at the position where the distal end of the imaging subject tooth in the retaining portion 55 approaches during imaging, A form in which a notch (or hole) 55c is provided at a position facing the imaging target tooth is desirable.

  The angle display portion 57 is attached to a portion of the retaining portion 55 that is not inserted into the oral cavity so that it can be seen from outside the oral cavity even when the connection portion 53a is inserted into the oral cavity, and has a cylindrical shape. The top surface (or the cylindrical portion (side surface)) is formed at an angle (first angle θ1, see FIGS. 2, 3, and 10) formed by the image capturing unit 10 attached to the connection unit 53a and the retaining unit 55. As related information, a scale including a plurality of mark lines is attached.

  In the present embodiment, a mode in which information about the first angle θ1 is mechanically transmitted to the angle display unit 57 via the rotation shaft 53 will be described. However, the angle sensor 54 detects information about the first angle θ1 and is electrically Alternatively, it may be transmitted to the angle display unit 57 and displayed.

  Based on the positional relationship between the scale of the angle display portion 57 and the retaining portion 55, that is, based on the reference line closest to the reference position (for example, the upper surface of the retaining portion 55), it is inserted into the oral cavity and cannot be seen (connection) It is possible to read information relating to the angle (first angle θ1) formed by the imaging unit 10 and the retaining unit 55 (attached to the unit 53a), and to align the X-ray device 70 in the positioning unit 59c of the guide unit 59. used.

  In the present embodiment, an electrical connection is provided between the guide portion 59 and the retaining portion 55, and the positioning mark of the positioning portion 59c is based on information on the first angle θ1 obtained by the angle sensor 54. (Any light emitter such as an LED provided in the first light-emitting device 63a to the fourth light-emitting device 63d) lights up.

  For this reason, the information regarding the first angle θ1 displayed on the angle display unit 57 is for confirmation, and the alignment between the X-ray apparatus 70 and the dental intraoral X-ray imaging apparatus 1 can be omitted. (Second alignment) can be performed.

  The guide part 59 includes a retaining part connection part 59a, a guide ring 59b, and a positioning part 59c. The guide unit 59 is attached to the retaining unit 55 so that the guide ring 59b faces the imaging unit 10 attached to the connection unit 53a, and positioning of the irradiation port of the X-ray apparatus 70 in X-ray imaging (first step). 2 alignment).

  The retaining portion connecting portion 59a is a member that is attached to the end portion of the portion (second member 55b) that is not inserted into the oral cavity of the retaining portion 55 during imaging using the X-ray device 70.

  The guide ring 59b has an oblong shape that is vertically long when viewed from the photographing unit 10 (may be a substantially U shape with an open upper portion in an upright state), and is attached to the retaining portion connection portion 59a.

  The guide ring 59b is located on a reference line LP perpendicular to the imaging surface through the center of the imaging surface of the imaging unit 10 when viewed from above the retaining unit 55, and is separated from the imaging surface by a first distance (200 mm). It is used for positioning (second positioning) the X-ray apparatus 70 including the X-ray source LS so that the X-ray source LS is disposed at the position (see FIG. 11).

  A positioning portion 59c is provided on the side portion of the guide ring 59b. The positioning unit 59c is provided with a second light emitting unit 63 including a plurality of light emitting devices as information (a plurality of positioning marks) corresponding to the first angle θ1 (marking line of the scale of the angle display unit 57). In the present embodiment, four positioning marks, that is, four light emitting devices (first light emitting device 63a to fourth light emitting device 63d) are provided in the positioning portion 59c. However, the number of positioning marks (light emitting devices) Is not limited to this.

  A light-emitting device that is supplied with power and is supplied with power to any one of the light-emitting devices constituting the second light-emitting unit 63 via the light-emitting device changeover switch 61 that corresponds to the information about the first angle θ1. Lights up.

  In order to confirm with the information regarding the first angle θ1 indicated by the angle display unit 57, each of the light emitting devices of the second light emitting unit 63 is the same as or close to the mark line of the scale of the angle display unit 57 having a corresponding relationship. It is desirable to emit light in color.

  The on / off control of the second light emitting unit 63 is interlocked with an on / off operation of a main power switch (not shown) (any of the light emitting devices always corresponds to the first angle θ1 when the main power is on). The lighting operation button 58 for operating lighting and extinguishing may be provided in the vicinity of the first light emitting unit 56 (for example, the upper surface of the first light emitting unit 56).

  In the present embodiment, when the first light emitting unit 56 and the second light emitting unit 63 are turned on by turning on the lighting operation button 58, the first light source unit 56 a and the second light source unit 56 b in the first light emitting unit 56. Is turned on, the light source corresponding to the first angle θ1 in the third light source unit 56c in the first light emitting unit 56 is turned on, and the light emitting devices corresponding to the first angle θ1 (the first light emitting device 63a to the fourth light emitting device 63d). Power is supplied to the light emitting device, and the light emitting device is turned on. When the lighting operation button 58 is turned off, the first light emitting unit 56 and the second light emitting unit 63 are turned off (extinguishes).

  It is emitted from the X-ray source LS of the X-ray apparatus 70 installed in alignment with the positioning mark corresponding to the mark line closest to the reference position (for example, the upper surface of the retaining part 55) among the mark lines on the scale of the angle display part 57. The central axis LX of the X-ray bundle can be substantially perpendicular to the bisector of the surface including the imaging surface of the imaging unit 10 and the tooth axis of the imaging target tooth as viewed from the side of the retaining unit 55. A plurality of positioning marks (first light emitting device 63a to fourth light emitting device 63d) are provided in the positioning portion 59c (see FIG. 10).

  That is, when the X-ray apparatus 70 is installed in accordance with the positioning mark corresponding to the information related to the first angle θ1 among the two or more positioning marks (the first light emitting device 63a to the fourth light emitting device 63d), The central axis LX of the X-ray bundle emitted from the radiation source LS is substantially perpendicular to the bisector of the surface including the imaging surface of the imaging unit 10 and the tooth axis of the imaging target tooth as viewed from the measurement of the retaining unit 55. Two or more positioning marks are provided on the positioning portion 59c.

  When the first angle θ1 is small, that is, when the imaging surface of the imaging unit 10 is nearly parallel to the upper surface of the retaining unit 55, it corresponds to the positioning mark (first light emitting device 63a) away from the retaining unit 55. The mark line of the scale of the angle display unit 57 to be close to the reference position.

  When the first angle θ1 is large, that is, when the imaging surface of the imaging unit 10 is close to the upper surface of the retaining unit 55, it corresponds to a positioning mark (fourth light emitting device 63d) near the retaining unit 55. The mark line of the scale of the angle display unit 57 is close to the reference position.

  The X-ray apparatus 70 is an apparatus that emits X-rays from one X-ray light source LS through an irradiation port, and is used when obtaining an X-ray image. The irradiation port of the X-ray apparatus 70 has a surface perpendicular to the central axis LX of the X-ray bundle emitted from the X-ray source LS.

  When the irradiation port of the X-ray apparatus 70 is installed at a predetermined position of the guide ring 59b (a position corresponding to a positioning mark corresponding to the first angle θ1), it is emitted from the X-ray source LS when viewed from above. The guide ring 59b has a substantially arc shape when viewed from the side and a substantially linear shape when viewed from above so that the center axis LX of the X-ray bundle to be passed passes through the center of the imaging surface of the imaging unit 10 ( (Refer FIG. 10, FIG. 11).

  For this reason, the reference line LP that passes through the center of the imaging surface of the imaging unit 10 and is perpendicular to the imaging surface and the central axis LX of the X-ray bundle emitted from the X-ray source LS overlap each other when viewed from above the retaining unit 55. Due to the positional relationship, the irradiation port of the X-ray apparatus 70 is disposed in the vicinity of the guide ring 59b.

  If a linear index 73 parallel to the central axis LX when viewed from the side is provided on the side of the X-ray apparatus 70 so that the index 73 and the positioning mark of the positioning portion 59c coincide with each other, alignment is achieved. (Second alignment) can be easily performed (see FIG. 10).

  At the time of imaging using the X-ray device 70, a part of the imaging assisting tool 50 such as the imaging unit 10 and the connection unit 53a is inserted into the oral cavity of the subject, and the tooth axis of the imaging target tooth and the retaining unit 55 are connected. The photographing assisting tool 50 is held by the grip 30 in a state of being substantially vertical. At this time, the first light emitting unit 56, the angle display unit 57, and the guide unit 59 are located outside the oral cavity.

  Further, at the time of imaging, the waterproof cover is covered with a portion (a part of the retaining portion 55 (first member 55a), the imaging unit 10) inserted into the oral cavity of the subject of the dental intraoral X-ray imaging apparatus 1. Is desirable.

  Next, an operation procedure will be described. A part including the imaging unit 10 of the dental intraoral X-ray imaging apparatus 1 in a state in which a part of the retaining unit 55 (first member 55a), the imaging unit 10 and the like are covered with a waterproof cover is an imaging target tooth. Is inserted into the oral cavity of a subject. Prior to insertion, the grip 30 is held in a state in which the grip 30 and the retaining portion 55 (second angle θ2) are easily used by the user by the first lock mechanism 33 provided in the bearing portion 31. It is desirable to fix to.

  By operating a lighting operation button 58 provided on the grip 30, the first light emitting unit 56 and the second light emitting unit 63 are turned on, and the light of the first light emitting unit 56 irradiated on the surface of the subject's face or the like is emitted. While watching, the user performs alignment (first alignment) between the imaging unit 10 and the imaging target tooth.

  The positional relationship between the imaging unit 10 and the retaining unit 55 in the oral cavity is determined based on the shape in the oral cavity of the subject, the position where the dental intraoral X-ray imaging apparatus 1 is inserted, and the first angle θ1 is determined. decide. When the second locking mechanism 35 is provided, the dental intraoral X-ray imaging apparatus 1 is in a locked state in which the imaging unit 10 and the retaining unit 55 are fixed in a widened state (the first angle θ1 is small). When a part is inserted into the oral cavity and then the locked state of the second locking mechanism 35 is released and the imaging unit 10 comes into contact with the palate or the like, the positional relationship between the imaging unit 10 and the retaining unit 55 in the oral cavity is determined. To do.

  In the case where the third light source unit 56c is provided in the first light emitting unit 56, the line of light emitted from the third light source unit 56c according to a change in the first angle θ1 (degree of inclination of the photographing unit 10). Changes, and the positional relationship of the imaging unit 10 that is difficult to see by being hidden in the oral cavity can be visually recognized (see FIG. 9).

  Of the first light emitting device 63a to the fourth light emitting device 63d of the second light emitting unit 63, the light emitting device corresponding to the first angle θ1 is supplied with electric power from the battery 39 via the light emitting device changeover switch 61. The light emitting device is turned on.

  The user of the dental intraoral X-ray imaging apparatus 1 installs the irradiation port of the X-ray apparatus 70 so as to align the index 73 with the light-emitting device that is lit (second alignment).

  After the first alignment and the second alignment are completed, the lighting operation button 58 is operated to turn off the first light emitting unit 56 and the second light emitting unit 63, and from the battery 39 to the first light emitting unit 56 and the second light emitting unit 56. The power supply to the light emitting unit 63 is stopped. Thereafter, an imaging operation is performed by performing a predetermined operation such as X-ray irradiation by the X-ray apparatus 70.

  In the imaging operation, the imaging unit 10 images the visible light converted by the scintillator. The image signal obtained by the imaging operation is subjected to image processing for obtaining an X-ray image by an image processing device built in the grip 30 (or an external image processing device connected to the grip 30 by wire or wirelessly). Applied.

  If the irradiation port of the X-ray device 70 is arranged so that the index 73 is aligned with the light emitting device that is lit, the central axis LX of the X-ray bundle emitted from the X-ray source LS of the X-ray device 70 is When viewed from the side, it can be made substantially perpendicular to the bisector of the surface including the imaging surface of the X-ray light receiving unit built in the imaging unit 10 and the tooth axis of the imaging subject tooth, By the imaging method, it is possible to obtain an X-ray image of the imaging target tooth in a state close to the actual length.

  In the present embodiment, in consideration of the bisection imaging method, that is, the central axis LX of the X-ray bundle includes the imaging surface of the X-ray imaging element built in the imaging unit 10 when viewed from the side. The shape of the side portion of the guide ring 59b and the positioning mark (the position where the light emitting device is installed) of the positioning portion 59c are determined so as to be substantially perpendicular to the bisector of the surface and the tooth axis of the imaging target tooth. Although the embodiment has been described, it may be an embodiment in which these are determined in consideration of other imaging methods.

  For example, the shape of the side portion of the guide ring 59b is set so that the central axis LX of the X-ray bundle is substantially perpendicular to the surface including the imaging surface of the X-ray imaging element built in the imaging unit 10 when viewed from the side. The positioning mark (installation position of the light emitting device) of the positioning portion 59c may be determined.

  Further, in the present embodiment, the form in which the grip 30 is attached to the photographing auxiliary tool 50 in a state where the grip 30 can rotate around the rotation shaft 53 has been described. Since the structure of the rotation mechanism can be simplified by not changing the second angle θ2, it is possible to improve durability.

  In this case, it is desirable that the grip 30 has a first grip 30a extending upward and a second grip 30b extending downwardly of the L-shape constituting the retaining portion 55 (see FIG. 12, see FIG. By grasping either the first grip 30a or the second grip 30b, the dental intraoral X-ray imaging apparatus 1 can be gripped from either above or below, and the dental intraoral X-ray imaging apparatus There is an advantage that even if 1 is turned upside down, it can be held without changing the holding posture.

  The first grip 30a and the second grip 30b both incorporate a battery 39 having substantially the same weight, or incorporate a battery 39 on one side and a member having substantially the same weight as the battery 39 on the other side. It is desirable to have the same size and weight. For example, a configuration in which the battery 39 for driving the first light emitting unit 56 is built in the first grip 30a and the battery 39 for driving the second light emitting unit 63 is built in the second grip 30b is conceivable. In this case, it is easy to hold the dental intraoral X-ray imaging apparatus 1 in a well-balanced manner regardless of whether the first grip 30a or the second grip 30b is gripped.

  Further, although the grip 30 is attached to the retaining portion 55 and the grip 30 holds the retaining portion 55 has been described, the grip 30 is attached to the photographing portion 10 and the grip 30 holds the photographing portion 10. There may be.

  Moreover, although the 1st light emission part 56 which irradiates linear light toward the imaging | photography part 10 was demonstrated in the form provided in the holding | maintenance part 55 (1st member 55a), even if it is a form provided in the grip 30. Good (see FIG. 13).

DESCRIPTION OF SYMBOLS 1 Dental intraoral X-ray imaging apparatus 10 Imaging | photography part 30 Grip 30a 1st grip 30b 2nd grip 31 Bearing part 33 1st locking mechanism 35 2nd locking mechanism 37 Control part 39 Battery 50 Imaging assistance tool 53 Rotating shaft 53a Connection part 53b Energizing member 54 Angle sensor 55 Holding part 55a First member 55b Second member 55c Notch part 56 First light emitting part 57 Angle display part 58 Lighting operation button 59 Guide part 59a Holding part connection part 59b Guide ring 59c Positioning part 61 Light emission Device selector switch 63 Second light emitting unit 63a to 63d First light emitting device to fourth light emitting device 70 X-ray device 73 Index LX Central axis LP When viewed from above, passes through the center of the imaging surface of the imaging unit and is perpendicular to the imaging surface Line LS X-ray source θ1 First angle θ2 Second angle

Claims (3)

An imaging unit having any one of an X-ray imaging device, an X-ray film, and an imaging plate;
Positioning the X-ray irradiation unit of the X-ray apparatus during imaging using a X-ray apparatus including an X-ray source provided at a position connected to the holding unit and opposed to the imaging unit. A photographing aid having a guide part used to perform;
A grip for holding one of the photographing unit and the retaining unit;
The retaining part is a member having an L shape when viewed from above,
The L-shape is one of two sides constituting the L-shape and the first member to which the photographing unit is attached, and the other of the two sides constituting the L-shape and the guide portion is A second member to be attached;
One of the retaining part and the grip has a light emitting part that emits linear light toward the photographing part,
The light emitting unit is located outside the oral cavity during the photographing,
The light emitting unit emits linear light extending in a first direction perpendicular to the first member and the second member as the linear light, the first member, and the first direction. A dental intraoral X-ray imaging apparatus, comprising at least one of a second light source unit that emits linear light extending in a second direction perpendicular to the dental direction. An angle sensor for detecting an angle formed by the photographing unit and the retaining unit;
2. The dental oral intraoral X-ray imaging apparatus according to claim 1, wherein the light emitting unit includes a third light source unit that emits linear light whose inclination changes based on information from the angle sensor. . An imaging unit having any one of an X-ray imaging device, an X-ray film, and an imaging plate;
Positioning the X-ray irradiation unit of the X-ray apparatus during imaging using a X-ray apparatus including an X-ray source provided at a position connected to the holding unit and opposed to the imaging unit. A photographing aid having a guide part used to perform;
The retaining part is a member having an L shape when viewed from above,
The L-shape is one of two sides constituting the L-shape and the first member to which the photographing unit is attached, and the other of the two sides constituting the L-shape and the guide portion is A second member to be attached;
The retaining part has a light emitting part that emits linear light toward the photographing part,
The light emitting unit is located outside the oral cavity during the photographing,
The light emitting unit emits linear light extending in a first direction perpendicular to the first member and the second member as the linear light, the first member, and the first direction. A dental intraoral X-ray imaging apparatus, comprising at least one of a second light source unit that emits linear light extending in a second direction perpendicular to the dental direction.

Images