JP2014161523A - Dental oral cavity radiographic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental oral cavity radiographic device that facilitates aligning of a light receiving unit and a tooth targeted for radiography.SOLUTION: A dental oral cavity radiographic device comprises a light receiving unit having one of an X-ray imaging device, an imaging plate and an X-ray film. A photographing aid having a retention unit is comprised. A grip is comprised. The light receiving unit is provided on a part of the retention unit to be inserted in an oral cavity at the time of photographing using X-ray equipment including an X-ray source. The grip is attached to the light receiving unit or the retention unit, and the dental oral cavity radiographic device is held by holding the grip. A light emitting unit that emits light is provided at a part that is a back face of the light receiving unit or under surface of the retention unit and is inserted in the oral cavity at the time of radiography.

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.

JP 2011-188880 A

  However, since the mouth is closed when held by occlusion of the subject's teeth, it is difficult to grasp the positional relationship between the light receiving unit and the imaging target tooth from outside the oral cavity, and alignment is difficult.

  Accordingly, an object of the present invention is to provide a dental intraoral X-ray imaging apparatus capable of easily aligning a light receiving unit and a subject to be imaged.

  A dental intraoral X-ray imaging apparatus according to the present invention includes a light-receiving unit having any one of an X-ray imaging element, an imaging plate, and an X-ray film, an imaging auxiliary tool having a retaining unit, and a dental unit including a grip. An intraoral X-ray imaging apparatus, wherein the light receiving unit is provided in a portion of the retaining unit that is inserted into the oral cavity during imaging using the X-ray device including the X-ray source, and the grip is the light receiving unit or the retaining unit The dental intraoral X-ray imaging apparatus is held by gripping the grip and emits light to the back surface of the light receiving unit or the lower surface of the retaining unit and inserted into the oral cavity during imaging. A light emitting unit is provided.

  When photographing with the light receiving part inserted into the oral cavity, the upper surface of the imaging assisting tool and the surface of the light receiving part are in a positional relationship facing the imaging target tooth and are difficult to see from outside the oral cavity. Since the lower surface and the back surface of the light receiving unit are visible from outside the oral cavity, if some of these are lit, the positional relationship of the light receiving unit in the oral cavity is predicted from the oral cavity based on the lighting position. I can do it. For this reason, it becomes easy to align the light receiving unit and the imaging target tooth by checking the position of the light emitting unit that is lit and easily visible.

  When attached to the back, power can be supplied to the light-emitting unit and operation control can be performed using a cable, so that there is an advantage that wiring can be easily performed as compared with a configuration in which the light-emitting unit is provided in the photographing auxiliary tool.

  Preferably, a light guide member is provided around the light emitting unit.

  Since the light from the light emitting part is diffused from the light guide member and the light emitting area is expanded, it is easy to check the lighting position.

  Preferably, the apparatus further includes a waterproof cover that covers at least the light receiving portion and a portion that is inserted into the oral cavity of the retaining portion during photographing, and at least the portion that covers the light emitting portion of the waterproof cover is made of a light-transmitting material. It is characterized by that.

  The waterproof cover can prevent the test subject's saliva from entering the connection part, and can be used for another subject by simply replacing the waterproof cover without cleaning the retaining part or the light receiving part. There is a merit that becomes possible. By configuring the entire waterproof cover or at least the portion of the waterproof cover that covers the light emitting portion with a light-transmitting material, light from the light emitting portion can be confirmed through the waterproof cover.

  The dental intraoral X-ray imaging apparatus according to claim 1, wherein the grip is preferably fixed to the imaging aid so that an angle formed with the retaining portion does not change.

  Since the structure of the rotation mechanism can be simplified, durability can be improved.

  More preferably, the grip has a first grip that extends above the retaining portion and a second grip that extends below the retaining portion, and grips at least one of the first grip and the second grip, thereby providing a dental grip. An intraoral X-ray imaging apparatus is held.

  By grasping either the first grip or the second grip, the dental intraoral X-ray imaging apparatus can be gripped from above or below, and the dental intraoral X-ray imaging apparatus is turned upside down. However, there is an advantage that the grip can be performed without changing the gripping posture. In particular, it is possible to select a grip to be gripped from the viewpoint of making the light from the light emitting unit easier to see.

  More preferably, the first grip and the second grip have the same size and the same weight.

  Regardless of whether the grip is the first grip or the second grip, the dental intraoral X-ray imaging apparatus can be easily held in a balanced manner.

  Preferably, the photographing auxiliary tool has a rotation axis, the light receiving unit is rotatable about the rotation axis, and is attached to the rotation axis in a state in which an angle formed with the retaining unit can be changed. The connection part to which the light receiving part is attached is provided at a part inserted into the oral cavity of the retaining part at the time of imaging so that the light receiving surface of the X-ray imaging element of the light receiving part attached to the connection part approaches the retaining part. A biasing member is provided so that a biasing force is applied.

  As described above, according to the present invention, it is possible to provide a dental intraoral X-ray imaging apparatus capable of easily aligning the light receiving unit and the imaging target tooth.

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. FIG. 2 is a perspective view of a dental intraoral X-ray imaging apparatus held by a user in a state where a grip and a light receiving unit are positioned below a retaining unit. 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 perspective view of a dental intraoral X-ray imaging apparatus when a guide ring has a substantially U shape. FIG. 6 is a perspective view of a dental intraoral X-ray imaging apparatus when a grip is provided with a second lock mechanism (operation button) for releasing the locked state of the rotational operation of the light receiving unit and a light emitting unit operation switch. 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 a dental intraoral X-ray imaging apparatus in a state where a part is covered with a waterproof cover. It is a perspective view of a dental intraoral X-ray imaging apparatus provided with two grips and incorporating an X-ray imaging device. It is a perspective view of a dental intraoral X-ray imaging apparatus provided with two grips and holding an X-ray film.

  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 100 according to this embodiment includes an imaging unit 10, a grip 30, and an imaging auxiliary tool (indicator) 50 (see FIGS. 1 and 2).

  Details of the photographing unit 10 will be described. The imaging unit 10 includes a light receiving unit 11 and a cable 17.

  The light receiving unit 11 includes an X-ray light receiving unit. The X-ray light receiving unit of the light receiving unit 11 includes an X-ray imaging element such as a scintillator that converts X-rays into visible light, and a CCD that converts the visible light into electric charges. In the case where an electric wire directly connected to the X-ray imaging device is provided on the flexible substrate, a substrate for connecting the flexible substrate and the cable 17 may be provided inside the light receiving unit 11.

  In addition, an electric circuit for driving the X-ray imaging element of the light receiving unit 11 may be provided inside the light receiving unit 11. However, the members constituting the electric circuit for driving the X-ray imaging element may be arranged on the grip 30 described later.

  The cable 17 is an electric wire for supplying power to the X-ray light receiving unit and transmitting / receiving signals, and is connected to a grip 30 described later. The cable 17 may be configured to extend from the back surface or side surface of the light receiving unit 11 to the grip 30, or may be configured to extend to the grip 30 so as to pass through the inside of the rotating shaft 53 or the retaining unit 55 and not be visible from the outside. Good.

  Instead of a mode in which signal transmission / reception from the X-ray light receiving unit is performed via the cable 17, a mode in which the signal is transmitted wirelessly may be employed. 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 light receiving unit 11.

  The grip 30 is attached to the photographing auxiliary tool 50 in a state of being rotatable around the rotation shaft 53 via a bearing portion 31 serving as a bearing for the rotation shaft 53. The grip 30 includes an image signal obtained by a battery that supplies power to the light receiving unit 11 and the light emitting unit 56, a control unit that controls the light receiving unit 11 and the light emitting unit 56, and an X-ray imaging device of the light receiving unit 11. Built-in image processing device for processing. However, an image signal may be transmitted from the grip 30 to an external image processing apparatus (for example, a personal computer) by wire or wireless without incorporating the image processing apparatus.

  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 light receiving portion 11 is not limited.

  For example, as shown in FIG. 3, when the grip 30 is fixed in a positional relationship such that the light receiving portion 11 is located above the retaining portion 55 and the grip 30 is located below the retaining portion 55 as viewed from the side. The light receiving unit 11 can be easily positioned near the upper teeth, and the grip 30 is fixed in such a positional relationship that the light receiving unit 11 and the grip 30 are located above the retaining unit 55 as shown in FIG. If the inner X-ray imaging apparatus 100 is turned upside down, the light receiving unit 11 can be easily positioned 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 holding of the light receiving unit 11 and the like is performed by gripping the grip 30, it is not necessary to bite the retaining unit 55 for holding the light receiving unit 11 and the like, and shooting is performed with 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 100 (the light receiving unit 11 and the imaging assisting tool 50 that holds the light receiving unit 11), 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 light receiving unit 11, there is an advantage that the hand holding the grip 30 is hardly affected by the radiation from the X-ray device 70.

  Since the dental intraoral X-ray imaging apparatus 100 is held by holding the grip 30, the subject can take an image with the mouth open without biting. Since the mouth is in an open state, light from a light emitting unit 56, which will be described later, can be seen from the mouth, and the light receiving unit 11 in the vicinity of the light emitting unit 56 can be easily aligned with the imaging target tooth.

  By changing the angle (second angle θ2) formed by the grip 30 and the retaining portion 55, light is received in a positional relationship (holding position of the grip 30) convenient for the person holding the grip 30 (subject or operator). The part 11 can be easily 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 is changed, and accordingly, the position where the light receiving unit 11 and the retaining unit 55 are in contact with a part in the oral cavity such as the palate is changed. The angle (first angle θ1) formed by the imaging surface of the X-ray imaging device of the unit 11 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.

  Therefore, it is possible to freely change the direction of the normal of the imaging surface of the X-ray imaging device of the light receiving unit 11 with the grip 30 held. That is, when the user (operator or subject) holds the grip 30, the light receiving unit 11 is held in a state where the first angle θ1 can be adjusted.

  The light receiving unit 11 and the grip 30 are made rotatable with respect to the retaining unit 55, but by using the rotating shaft 53 in common, it is possible to simplify the mechanism related to the rotational motion. By simplifying, it becomes possible to easily hold the grip 30 correctly without breaking even a subject who is not familiar with it.

  Further, the grip 30 has a smaller size limit than the retaining portion 55 and the light receiving portion 11, and it is easy to secure a space for incorporating an electrical component such as the battery 39 inside. Further, by collecting as much electrical parts as possible inside the grip 30, it becomes possible to lighten members other than the grip 30 of the dental intraoral X-ray imaging apparatus 100 (the light receiving unit 11 and the imaging aid 50). When the grip 30 is gripped, it is possible to hold members (the light receiving unit 11 and the imaging aid 50) other than the grip 30 of the dental intraoral X-ray imaging apparatus 100 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 prism shape of the grip 30 may be a rounded corner so as to be easily gripped or a substantially cylindrical shape.

  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 light emitting part 56, an angle display part 57, and a guide part 59.

  The light receiving unit 11 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 light receiving unit 11 is held in a changeable state. The light receiving part 11 may be fixed to the connection part 53a by screwing or the like, or may be attached to the connection part 53a in a detachable state with a part of the light receiving part 11 interposed therebetween.

  When the light receiving unit 11 is rotated around the rotation shaft 53 within a range necessary for photographing with the light receiving unit 11 attached to the connection unit 53a, the light receiving unit 11 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 a light receiving portion 11 attached to one end via a connecting portion 53a, an angle display portion 57 attached to the other end, and the rotating shaft 53 of the light receiving portion 11 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 around the rotation shaft 53 of the angle display unit 57 is transmitted to the light receiving unit 11 attached to the connection unit 53 a via the rotation shaft 53 to rotate the light receiving unit 11. Further, a biasing member 53b such as a spring is provided on the rotating shaft 53 or the like so that a biasing force is applied so that the front side of the light receiving unit 11 attached to the connection unit 53a approaches the upper surface of the retaining unit 55 ( (See FIG. 8).

  Further, a second lock mechanism 35 that controls the rotatable state of the light receiving unit 11 around the rotation shaft 53 may be provided. When the second lock mechanism 35 is in the locked state, the first angle θ1 does not change, and the lock state by the second lock mechanism 35 is released by the operation of the operation button provided on the grip 30 or the like. The light receiving unit 11 is rotated by the urging force (see FIG. 7). Since the grip 30 and the light receiving unit 11 share the rotating shaft 53, it is possible to provide the grip 30 with a structure including an operation button that is interlocked with the second lock mechanism 35. The positional relationship between the light receiving unit 11 and the retaining unit 55 can be easily adjusted by the second lock mechanism 35.

  The retaining part 55 is a member having an L-shape when viewed from above, and the light receiving part 11 is attached to one end (on the connection part 53a side) of the retaining part 55 via the rotating shaft 53, and the other end. A guide part 59 is attached to the part.

  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, It is desirable to provide a notch (or hole) 55a at a position facing the imaging target tooth.

  The light emitting unit 56 has a light emitter that is attached to a position close to the light receiving unit 11 in the photographing assisting tool 50, and lights up in a stage before performing a photographing operation. In the present embodiment, it is provided in the notch 55a, particularly at a position where the light emission state can be visually recognized from the lower surface (see FIG. 4).

  The light emitting unit 56 may be attached to the back surface of the light receiving unit 11. When attached to the back surface, the cable 17 can be used to supply power and control the operation of the light emitting unit 56, so that there is a merit that wiring can be easily performed as compared to the configuration in which the light emitting unit 56 is provided in the photographing auxiliary tool 50. is there.

  In the case where the upper tooth is the subject tooth, the user grasps the grip 30 in a state as shown in FIG. 3 and looks at the light-emitting unit 56 that is lit while looking into the oral cavity of the subject from below. It is confirmed that there is the light receiving unit 11 including the light emitting unit 56 nearby.

  When the lower teeth are the imaging target teeth, the user grasps the grip 30 in a state as shown in FIG. It is confirmed that there is the light receiving unit 11 including the light emitting unit 56 nearby.

  When photographing with the light receiving unit 11 inserted into the oral cavity, the upper surface of the imaging assisting tool 50 and the surface of the light receiving unit 11 are in a positional relationship facing the imaging target tooth and are difficult to see from outside the oral cavity. Since the lower surface of the auxiliary tool 50 and the back surface of the light receiving unit 11 are visible from outside the oral cavity, when a part of these lights up, the position of the light receiving unit 11 in the oral cavity based on the lighting position. The relationship can be predicted from outside the mouth. For this reason, it becomes easy to align the light receiving unit 11 and the imaging target tooth by confirming the position of the light emitting unit 56 that is lit and easily visible.

  A configuration in which the periphery of the light emitter of the light emitting unit 56 is configured by a light guide member (for example, an acrylic plate) may be employed. FIG. 2 shows an example in which the notch portion 55 a of the retaining portion 55 is provided and is provided around the light emitter of the light emitting portion 56. In this case, since the light from the light emitting unit 56 is diffused from the light guide member and the light emitting area is expanded, it is easy to check the lighting position.

  After the alignment is completed, the light emitting unit 56 is turned off. The control of turning on / off the light emitting unit 56 may be in conjunction with an on / off operation of a power switch (not shown), or the light emitting unit operation switch 38 for operating the on / off operation is provided on the grip 30. It is also possible (see FIG. 7).

  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. Information on the top surface (or the cylindrical portion (side surface)) of the light receiving portion 11 attached to the connection portion 53a and the holding portion 55 (first angle θ1, see FIGS. 3 to 5). As shown, 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, information about the first angle θ1 is detected in the vicinity of the light receiving unit 11, It may be configured to be electrically transmitted to the angle display unit 57 and displayed, or an electrical connection is provided between the guide unit 59 and the retaining unit 55 to light the positioning mark of the positioning unit 59c. (In this case, the angle display unit 57 may be omitted).

  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 on the angle (first angle θ1) formed between the light receiving unit 11 and the holding unit 55 (attached to the unit 53a), and to align the X-ray apparatus 70 in the positioning unit 59c of the guide unit 59. used.

  During imaging using the X-ray device 70, the guide unit 59 is attached to the retaining unit 55 so as to face the light receiving unit 11 attached to the connection unit 53a.

  The guide part 59 includes a retaining part connection part 59a, a guide ring 59b, and a positioning part 59c. The guide part 59 is attached to the retaining part 55 so that the guide ring 59b faces the light receiving part 11 attached to the connection part 53a, and is used for positioning the irradiation port of the X-ray apparatus 70 in X-ray imaging. Is done.

  The retaining portion connecting portion 59a is a member that is attached to an end portion of a portion 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 connection portion 53a side (may be substantially U-shaped with an open upper portion (see FIG. 6)), and is attached to the retaining portion connection portion 59a. .

  The guide ring 59b is on a reference line LP that passes through the center of the imaging surface of the X-ray imaging device and is perpendicular to the imaging surface when viewed from above the retaining portion 55, and is separated from the imaging surface by a first distance (200 mm). It is used to position the X-ray apparatus 70 including the X-ray source LS so that the X-ray source LS is disposed at the predetermined position (see FIG. 8).

  A positioning portion 59c is provided on the side portion of the guide ring 59b. In the positioning part 59c, information (a plurality of positioning marks) corresponding to the scale mark lines of the angle display part 57 is described. It is desirable that the scale mark line of the angle display unit 57 and the positioning mark of the positioning unit 59c that are in a corresponding relationship are indicated by the same color (or the same symbol or character).

  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 is substantially parallel to the bisector between the surface including the imaging surface of the X-ray imaging device built in the light receiving unit 11 and the tooth axis of the imaging target tooth as viewed from the side of the retaining unit 55. A plurality of positioning marks are provided on the positioning portion 59c so as to be vertical (see FIG. 5).

  That is, when the X-ray device 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 central axis LX of the X-ray bundle emitted from the X-ray source LS However, when viewed from the measuring method of the retaining unit 55, two or more positioning objects are used so that the plane can be substantially perpendicular to the bisecting plane between the surface including the imaging surface of the light receiving unit 11 and the tooth axis of the imaging target tooth. A mark is provided on the positioning portion 59c.

  When the first angle θ <b> 1 is small, that is, when the imaging surface of the X-ray imaging device is in a state of being nearly parallel to the upper surface of the retaining unit 55, the angle display unit 57 corresponding to the positioning mark away from the retaining unit 55. The mark line of the scale is close to the reference position.

  When the first angle θ1 is large, that is, when the imaging surface of the X-ray imaging device is close to the upper surface of the retaining unit 55, the scale of the angle display unit 57 corresponding to the positioning mark near the retaining unit 55 The mark line becomes closer 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 (position corresponding to the positioning mark of the positioning portion 59c corresponding to the mark line of the scale closest to the reference position) from above As seen from the side, the guide ring 59b has a substantially arc shape so that the central axis LX of the X-ray bundle emitted from the X-ray source LS passes through the center of the imaging surface of the X-ray imaging device. It has a substantially linear shape when viewed from above (see FIGS. 5 and 8).

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

  When 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, The apparatus 70 can be easily aligned (see FIG. 5).

  At the time of imaging using the X-ray apparatus 70, a part of the imaging unit 10 such as the light receiving unit 11 and a part of the imaging assistance tool 50 such as the connection unit 53a are inserted into the oral cavity of the subject, The photographing assisting tool 50 is held by the grip 30 in a state where the tooth axis and the retaining portion 55 are perpendicular to each other. At this time, the angle display part 57 and the guide part 59 are located outside the oral cavity. However, the angle formed between the tooth axis of the imaging target tooth and the retaining portion 55 may not be vertical.

  Further, at the time of imaging, the waterproof cover is covered on the portion (part of the retaining part 55, part of the light receiving part 11 and part of the cable 17) inserted into the oral cavity of the subject of the dental intraoral X-ray imaging apparatus 100. Is desirable (see FIG. 9). The waterproof cover used in the present embodiment (at least the portion covering the light emitting portion 56) is preferably made of a translucent material so that the light from the light emitting portion 56 is transmitted.

  The waterproof cover can prevent the test subject's saliva and the like from entering the connecting portion 53a, and even if the waterproof cover is replaced without changing the retaining portion 55, the light receiving portion 11, etc., it can be transferred to another subject. There is an advantage that can be used. By configuring the entire waterproof cover or at least a portion of the waterproof cover covering the light emitting portion 56 with a light-transmitting material, the light from the light emitting portion 56 can be confirmed through the waterproof cover.

  Next, an operation procedure will be described. The part including the light receiving part 11 of the dental intraoral X-ray imaging apparatus 100 in a state where a part of the retaining part 55, the light receiving part 11 and the like are covered with a waterproof cover, Inserted into. 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 light emitting unit operation switch 38 provided on the grip 30, the light emitting unit 56 is turned on, and the user aligns the light receiving unit 11 and the imaging target tooth while watching the light of the light emitting unit 56 through the waterproof cover. I do. After the alignment, the light emitting unit 56 is turned off by operating the light emitting unit operation switch 38 or the like.

  Based on the shape in the oral cavity of the subject, the position where the dental intraoral X-ray imaging apparatus 100 is inserted, the positional relationship between the light receiving unit 11 and the retaining unit 55 in the oral cavity is determined, and the first angle θ1 is determined. decide. In the case where the second lock mechanism 35 is provided, the dental intraoral X-ray imaging apparatus 100 is in a locked state in which the light receiving unit 11 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 operation button is operated to release the locked state, and the light receiving unit 11 comes into contact with the palate or the like, the positional relationship between the light receiving unit 11 and the retaining unit 55 in the oral cavity is determined. To do.

  The user of the dental intraoral X-ray imaging apparatus 100 looks at the scale of the angle display unit 57, confirms the mark line closest to the reference position, and marks the positioning mark corresponding to the mark line in the positioning part 59c. 73, the irradiation port of the X-ray apparatus 70 is installed. Thereafter, an imaging operation is performed by performing predetermined operations such as X-ray irradiation by the X-ray apparatus 70 and inputting of a medical chart number.

  In the imaging operation, the X-ray imaging element of the light receiving unit 11 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 in accordance with the positioning mark of the positioning portion 59c corresponding to the mark line closest to the reference position (for example, the upper surface of the retaining portion 55), the X-ray of the X-ray device 70 The central axis LX of the X-ray bundle emitted from the source LS is a bisector between the surface including the imaging surface of the X-ray light receiving unit built in the light receiving unit 11 and the tooth axis of the imaging target tooth as viewed from the side. It is possible to obtain an X-ray image of the imaging target tooth in a state close to the actual length by the bisector imaging method.

  In the present embodiment, in consideration of the bisector 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 light receiving unit 11 when viewed from the side. Although the shape of the side portion of the guide ring 59b and the positioning mark 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, These may be determined in consideration of the imaging method.

  For example, the shape of the side portion of the guide ring 59b or the like 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 light receiving unit 11 when viewed from the side. The positioning mark 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. 10, see FIG. By grasping either the first grip 30a or the second grip 30b, the dental intraoral X-ray imaging apparatus 100 can be gripped from either above or below, and the dental intraoral X-ray imaging apparatus There is an advantage that gripping can be performed without changing the gripping posture even if 100 is turned upside down. In particular, it is possible to select a grip to be gripped from the viewpoint of making the light from the light emitting unit 56 easier to see.

  The first grip 30a and the second grip 30b have approximately the same size, for example, by incorporating a battery having substantially the same weight in both, or by incorporating a battery in one and the other having a member having substantially the same weight as the battery. It is desirable to have a sheath weight. For example, a configuration in which a battery for driving the light emitting unit 56 is built in the first grip 30a and a battery for driving the light receiving unit 11 is built in the second grip 30b is conceivable. In this case, it is easy to hold the dental intraoral X-ray imaging apparatus 100 in a well-balanced manner regardless of which of the first grip 30a and the second grip 30b is gripped.

  Further, in the present embodiment, the form in which the light receiving unit 11 is attached to the photographing auxiliary tool 50 in a state where the light receiving unit 11 can rotate around the rotation shaft 53 has been described. The effect of the invention by providing the part 56 can be obtained.

  In the present embodiment, the light receiving unit 11 includes an X-ray light receiving unit such as a CCD. However, an X-ray film or an imaging plate may be held by a clip or the like (see FIG. 11). ). In this case, the X-ray film or imaging plate is attached to the light receiving unit 11 in a detachable state, and the light emitting unit 56 is used to easily position the film or imaging plate attached to the light receiving unit 11 and the imaging target tooth. To do.

DESCRIPTION OF SYMBOLS 10 Image | photographing part 11 Light receiving part 17 Cable 30 Grip 31 Bearing part 33 1st lock mechanism 35 2nd lock mechanism 37 1st communication part 38 Light emission part operation switch 39 Battery 50 Image pick-up tool 53 Rotating shaft 53a Connection part 53b Energizing member 55 Retaining part 56 Light emitting part 57 Angle display part 59 Guide part 59a Retaining part connection part 59b Guide ring 59c Positioning part 70 X-ray apparatus 100 Dental intraoral X-ray imaging apparatus LX Central axis LP Viewed from above, X-ray light receiving part Line passing through the center of the imaging surface and perpendicular to the imaging surface LS X-ray source

Claims (7)

A light receiving portion having any one of an X-ray imaging device, an imaging plate, and an X-ray film;
A shooting aid having a retaining part;
A dental intraoral X-ray imaging apparatus with a grip,
The light receiving unit is provided in a portion of the retaining unit that is inserted into the oral cavity during imaging using an X-ray apparatus including an X-ray source,
The grip is attached to the light receiving part or the retaining part, and the dental intraoral X-ray imaging apparatus is held by gripping the grip,
A dental intraoral X-ray imaging apparatus, characterized in that a light emitting unit that emits light is provided on a back surface of the light receiving unit or a lower surface of the retaining unit and inserted into the oral cavity at the time of imaging.   The dental intraoral X-ray imaging apparatus according to claim 1, wherein a light guide member is provided around the light emitting unit. A waterproof cover that covers at least the light receiving portion and a portion that is inserted into the oral cavity of the retaining portion during the photographing;
The dental intraoral X-ray imaging apparatus according to claim 1, wherein at least a portion of the waterproof cover that covers the light emitting portion is made of a translucent material.   The dental intraoral X-ray imaging apparatus according to claim 1, wherein the grip is fixed to the imaging assisting tool so that an angle formed with the retaining portion does not change.   The grip has a first grip extending above the retaining portion and a second grip extending below the retaining portion, and gripping at least one of the first grip and the second grip, The dental intraoral X-ray imaging apparatus according to claim 4, wherein the dental intraoral X-ray imaging apparatus is held.   The dental intraoral X-ray imaging apparatus according to claim 5, wherein the first grip and the second grip have the same size and the same weight. The photographing aid has a rotation axis,
The light receiving portion is rotatable about the rotation shaft, and is attached to the rotation shaft in a state in which an angle formed with the retaining portion can be changed,
The connection part to which the light receiving part in the rotating shaft is attached is provided in a part to be inserted into the oral cavity of the retaining part during the photographing,
The urging member is provided so that the urging force that the light receiving surface of the X-ray imaging element of the light receiving unit attached to the connection part approaches the holding part is provided. Dental intraoral X-ray imaging apparatus.

Images