WO2012105159A1 - Intraoral imaging system for dentistry - Google Patents

Intraoral imaging system for dentistry Download PDF

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Publication number
WO2012105159A1
WO2012105159A1 PCT/JP2012/000112 JP2012000112W WO2012105159A1 WO 2012105159 A1 WO2012105159 A1 WO 2012105159A1 JP 2012000112 W JP2012000112 W JP 2012000112W WO 2012105159 A1 WO2012105159 A1 WO 2012105159A1
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WO
WIPO (PCT)
Prior art keywords
light receiving
holding
receiving unit
imaging
unit
Prior art date
Application number
PCT/JP2012/000112
Other languages
French (fr)
Japanese (ja)
Inventor
田中　弘之
Original Assignee
株式会社ニックス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ニックス filed Critical 株式会社ニックス
Priority to JP2012555714A priority Critical patent/JPWO2012105159A1/en
Publication of WO2012105159A1 publication Critical patent/WO2012105159A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
    • A61B6/512—Intraoral means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams

Definitions

  • the present invention relates to a dental intraoral imaging system.
  • the X-ray film may be attached to the imaging aid with a clip as in Patent Document 1, but a light receiving unit including a thick X-ray imaging device may be attached to the imaging aid You need to consider another mounting method.
  • an object of the present invention is to provide a dental intraoral radiography system including a light receiving unit including an X-ray imaging device and a detachable mechanism for a radiography aid.
  • the dental intraoral radiography system comprises a radiographing unit having a light receiving unit having an X-ray imaging device, a holding substrate, and a portion of the holding substrate inserted into the oral cavity when radiographing using an X-ray device.
  • An imaging support provided at an end portion and having a holding unit for holding the light receiving unit; and the holding unit holds the light receiving unit by sandwiching a portion of the light receiving unit that protrudes in the back direction.
  • the light receiving unit including the X-ray imaging device and the imaging support tool including the holding substrate are separately configured, and the light receiving unit is attached to the holding unit of the imaging support tool.
  • the holding unit sandwiches a portion protruding in the back direction from the portion where the X-ray imaging device is present.
  • the portion where the X-ray imaging device is located is sandwiched in the vertical and horizontal directions perpendicular to the normal of the imaging surface, the substantial size of the portion becomes large, and interference with the palate and teeth around the tooth to be imaged Therefore, there is a problem that it becomes difficult to secure an appropriate imaging position, but this problem does not increase the size in the vertical or horizontal direction of the portion where the X-ray imaging device is located due to the mechanism related to such pinching. It does not occur.
  • the holding state of the light receiving unit by the holding unit can be released. That is, the light receiving unit can be easily attached and detached by the pinching mechanism by the holding unit.
  • the portion of the light receiving portion that protrudes in the back direction is sandwiched by the holding portion in the left-right direction or the up-down direction.
  • the holding unit includes an urging member that fixes the holding unit in a state in which the protruding portion in the back direction of the light receiving unit is sandwiched.
  • the light receiving unit has a front surface portion having an X-ray imaging device, an intermediate portion, and a back surface portion, and the intermediate portion sandwiched between the front surface portion and the back surface portion is a part of the back surface side of the front surface portion Has a shape projecting in the back direction, the dimension in the height direction of the middle part is shorter than the front and back parts, and the middle part is vertically held by the holding part.
  • the middle part By forming the middle part in a concave shape in the front and back parts, the holding part and the middle part are engaged in the recessed part, and when the holding part sandwiches the middle part, there is a merit that it is difficult to separate.
  • the imaging unit includes a ball joint provided in the light receiving unit and a grip connected to the light receiving unit via the arm, and by gripping the grip, imaging of the arm and the X-ray imaging device The light receiving unit and the imaging aid attached with the light receiving unit are held in a state where the angle formed with the surface can be adjusted.
  • the holding of the light receiving portion and the like is performed by holding the grip, and therefore, there is no need to engage the holding substrate for holding the light receiving portion and the like, and photographing is possible while maintaining the open mouth. .
  • the thickness of the light receiving unit increases in the depth direction by an amount that protrudes from the portion where the X-ray imaging device is present, there is little possibility that the imaging will be disturbed.
  • the holding substrate holds the holding unit in a rotatable state
  • the photographing aid includes an angle display unit that displays the rotation state of the holding unit.
  • a first waterproof cover that covers a part of the photographing unit including the light receiving unit, and a second waterproof cover that covers a part of the photographing aid including the holding unit, the first waterproof cover; (2) Separately from the waterproof cover.
  • a dental intraoral radiography system including a light receiving unit including an X-ray imaging device and a detachable mechanism with a radiography aid.
  • a dental intraoral radiography system 1 includes a radiographing unit 10, a cap 30, a radiography aid (indicator) 50, and an X-ray device 70 (see FIG. 1).
  • the imaging unit 10 includes a light receiving unit 11, a cable 17, an arm 18, and a grip 19.
  • the light receiving portion 11 has a front surface portion 11a which is a plate-like member incorporating the X-ray light receiving portion, an intermediate portion 11b, and a back surface portion 11c which rotatably holds the ball 18a of the arm portion 18.
  • the intermediate portion 11b sandwiched between the front surface portion 11a and the back surface portion 11c has a shape in which a part on the back surface side of the front surface portion 11a protrudes in the back direction, and the height direction (X-ray imaging device included in the X-ray light receiving portion
  • the dimension in the vertical direction perpendicular to the normal line of the imaging surface is shorter than the front surface portion 11a and the back surface portion 11c, and is sandwiched between the lower portion 51a and the upper portion 51b of the holding portion 51 described later.
  • the intermediate portion 11b By forming the intermediate portion 11b into a concave shape by the front surface portion 11a and the rear surface portion 11c, the holding portion 51 and the intermediate portion 11b are engaged in the concave portion, and the lower portion 51a and the upper portion 51b of the holding portion 51 are intermediate When the part 11b is sandwiched, it has the merit of being hard to remove.
  • the intermediate portion 11b has a shape in which a part of the front surface portion 11a protrudes in the back direction, and the back surface portion 11c is not provided. It may be in the form. In this case, the intermediate portion 11b also serves as the back portion to hold the ball 18a.
  • FIG. 13 and FIG. 14 show a mode in which the ball 18a is held by the intermediate portion 11b without the rear surface portion 11c.
  • a tray for receiving a ball 18a of an arm portion 18 described later is provided on the back surface side (or bottom surface side) of the back surface portion 11c.
  • the cable 17 is an electric wire for supplying power to the X-ray light receiving unit provided in the front surface unit 11 a and transmitting / receiving a signal, and is connected to a grip 19 described later.
  • the cable 17 is connected to the light receiving unit 11 at the back surface 11c, but connected to the light receiving unit 11 at the intermediate unit 11b or the front surface 11a. It may be present (see FIG. 13 and FIG. 14).
  • the X-ray receiving unit of the front surface unit 11a has 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 charge.
  • a substrate for connecting the flexible substrate and the cable 17 is provided in the middle portion 11b or the back portion 11c. Also good.
  • an electric circuit for driving the X-ray imaging device of the front face portion 11 a may be provided inside the light receiving portion 11.
  • a member constituting an electric circuit for driving the X-ray imaging device may be disposed in a grip 19 described later, or an image processing apparatus further downstream.
  • the mode may be performed wirelessly.
  • 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 arm 18 includes a ball 18a, a first arm 18b1, a second arm 18b2, and a connection 18c.
  • the first arm 18b1 is a rod-like member having one end fixed to the ball 18a and the other end connected to the connecting portion 18c.
  • the angle between the first arm 18b1 and the back surface 11c can be freely changed via the ball 18a constituting the ball joint and the pan provided on the back surface 11c.
  • the second arm 18 b 2 is a rod-like member whose one end is connected to the connection 18 c and the other end is fixed to the grip 19.
  • the connecting portion 18c holds the first arm 18b1 and the second arm 18b2 in such a manner that the angle between the first arm 18b1 and the second arm 18b2 can be freely changed and the angle can be fixed.
  • the cable 17 may be a string-like member, and may be configured to stick to the second arm 18b2 or may pass through the inside of the second arm 18b2 (see FIGS. 13 and 14).
  • a mode is described in which the direction in which the light receiving unit 11 is held is adjusted by using two rod-like members (the first arm 18 b 1 and the second arm 18 b 2). Is not limited to this.
  • the grip 19 is connected to the light receiving unit 11 via the cable 17 and the arm 18.
  • the grip 19 incorporates a battery for supplying power to the X-ray imaging device, a control unit for controlling the X-ray imaging device, and an image processing apparatus for performing image processing on an image signal obtained by the X-ray imaging device.
  • the image signal may be transmitted from the grip 19 to an external image processing apparatus (for example, a personal computer) in a wired or wireless manner.
  • the grip 19 may be held by the subject or held by an operator such as a dentist. Therefore, even if the subject can not perform occlusion properly, the X-ray imaging device etc. It will be possible to keep it within.
  • the members other than the grip 19 of the dental intraoral radiography system 1 are held by gripping the grip 19, the form is held by occlusion. Compared with this, there is an advantage that the holding can be easily performed even if the weight of the holding substrate 55 or the like becomes large.
  • the grip 19 is looser in size than the holding substrate 55 and the light receiving portion 11, and it is easy to secure a space for incorporating an electric component such as a battery inside.
  • an electric component such as a battery inside.
  • the members (the light receiving unit 11 and the imaging aid 50) other than the grip 19 of the intraoral dental intraoral imaging system 1 can be held in a stable state.
  • the cap 30 covers the upper portion of the front surface portion 11a (portion enclosing the X-ray imaging device) of the light receiving portion 11 and is a material (for example, rubber or elastomer resin) softer than the front surface portion 11a encapsulating the X-ray imaging device And silicon etc.).
  • the dimension in the vertical direction of the front side of the cap 30 is a length that does not overlap with the light receiving area of the X-ray imaging device when the upper part of the front part 11a is covered to prevent a part of the cap 30 from being reflected in the X-ray image. Is set.
  • the dimension in the vertical direction on the back side of the cap 30 is not particularly limited in relation to the X-ray imaging device, but the front side is relatively short, so that the cap 30 can be stably maintained in a covered state It is desirable to set at least longer than the front side.
  • the photographing aid 50 includes a holding unit 51, a rotating shaft 53, a holding substrate 55, an angle display unit 57, and a guide ring 59.
  • the holding portion 51 has a lower portion 51a, an upper portion 51b, and a pillar portion 51c connecting the lower portion 51a and the upper portion 51b, and the lower portion 51a and the upper portion 51b sandwich the middle portion 11b of the light receiving portion 11 in the vertical direction. Hold the part 11.
  • the dimension in the thickness direction of the lower portion 51a and the portion sandwiching the middle portion 11b of the upper portion 51b is preferably approximately the same length as the dimension in the thickness direction of the middle portion 11b (the distance between the front surface portion 11a and the back surface portion 11c) .
  • the distance between the lower portion 51a and the upper portion 51b is made about the same as the dimension in the height direction of the middle portion 11b, and the middle portion 11b is between the lower portion 51a and the upper portion 51b from the lateral direction.
  • a method is conceivable in which the light receiving unit 11 is slid so as to be inserted.
  • the form attached to the pillar part 51c in the state which can move at least one of the lower part 51a and the upper part 51b is also considered.
  • the column portion 51c is vertically elongated and the distance between the lower portion 51a and the upper portion 51b is longer than the dimension in the height direction of the intermediate portion 11b, and after the intermediate portion 11b is sandwiched,
  • the lower portion 51a and the upper portion 51b are brought close to each other, and a state in which the intermediate portion 11b is sandwiched between the lower portion 51a and the upper portion 51b by a screw or a biasing member is fixed.
  • the holding state of the light receiving unit 11 by the holding unit 51 can be released. That is, the light receiving unit 11 can be easily attached and detached by the holding mechanism by the holding unit 51.
  • the dimensions of these members are determined so that the holding portion 51 and the light receiving portion 11 do not interfere with the holding substrate 55 when the holding portion 51 holds the light receiving portion 11 and rotates around the rotation shaft 53.
  • the rotation shaft 53 is connected to the holding portion 51 at one end, and connected to the angle display portion 57 at the other end, and the rotational movement of the holding portion 51 about the rotation shaft 53 is the rotation shaft 53 It is transmitted to the angle display unit 57 through the rotation unit, and rotates the angle display unit 57. Similarly, the rotational movement of the angle display unit 57 about the rotation shaft 53 is transmitted to the holding unit 51 via the rotation shaft 53, and the holding unit 51 is rotated.
  • a biasing member such as a spring is provided on the rotation shaft 53 so that a biasing force is applied such that the front side of the holding portion 51 (the side on which the front portion 11a of the light receiving portion 11 is attached) approaches the top surface of the retaining substrate 55. May be provided.
  • the holding substrate 55 is a member formed in a flat plate shape, and in the present embodiment, the holding substrate 55 is described to have a substantially U-shape as viewed from above for photographing the back teeth. For this purpose, it may have a linear shape (not shown).
  • the angle display unit 57 is attached to a portion of the holding substrate 55 which is not inserted into the oral cavity so as to be visible from outside the oral cavity even when the holding unit 51 is inserted into the oral cavity, and has a cylindrical shape.
  • a scale including a plurality of mark lines is attached to the cylindrical portion (side surface) and the top surface of the lens as information related to the angle ⁇ (see FIG. 10) formed by the holding portion 51 and the holding substrate 55.
  • the holding portion inserted into the oral cavity and invisible It becomes possible to read information on the angle ⁇ formed between 51 and the holding substrate 55, and is used for alignment when positioning the X-ray device 70 in the positioning portion 59a of the guide ring 59.
  • the tooth to be photographed can not contact the holding substrate 55, so a notch (or a hole) is provided at a position facing the tooth to be photographed at the time of photographing so as to avoid the reamer.
  • a notch or a hole
  • the form is also conceivable.
  • the guide ring 59 is provided at a position facing the holding unit 51 holding the light receiving unit 11 via the holding substrate 55, and is used to position the irradiation port of the X-ray apparatus 70 in X-ray imaging.
  • the guide ring 59 has a vertically long, substantially elliptical shape when viewed from the holding portion 51 side.
  • the guide ring 59 passes through the center of the imaging surface of the X-ray imaging device as viewed from above the holding substrate 55, is on the reference line LP perpendicular to the imaging surface, and is separated from the imaging surface by a specific 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 position (see FIG. 11).
  • a positioning portion 59 a is provided on the side of the guide ring 59.
  • Information (a plurality of positioning marks) corresponding to the mark lines of the scale of the angle display section 57 is described in the positioning section 59a. It is desirable that the mark line of the scale of the angle display portion 57 in the corresponding relationship and the positioning mark of the positioning portion 59a be shown in the same color.
  • LX is substantially perpendicular to the bisecting plane of the plane including the imaging plane of the X-ray imaging device incorporated in the light receiving unit 11 and the tooth axis of the tooth to be imaged
  • a plurality of positioning marks are provided on the positioning portion 59a (see FIG. 10).
  • the scale of the scale of the angle display portion 57 corresponding to the positioning mark away from the holding substrate 55.
  • the marker line is close to the reference position.
  • the angle ⁇ is large, that is, when the imaging surface of the X-ray imaging device is close to perpendicular to the upper surface of the holding substrate 55, the mark of the scale of the angle display unit 57 corresponding to the positioning mark near the holding substrate 55.
  • the line 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 via an irradiation port, and is used when obtaining an X-ray image.
  • the irradiation port of the X-ray apparatus 70 has a plane perpendicular to the central axis LX of the X-ray flux emitted from the X-ray source LS.
  • the guide ring 59 When the irradiation port of the X-ray device 70 is installed at a predetermined position of the guide ring 59 (a position aligned with the positioning mark of the positioning portion 59a corresponding to the marking line of the scale closest to the reference position) As viewed from the side, the guide ring 59 has a substantially arc shape so that the central axis LX of the X-ray flux emitted from the X-ray source LS passes through the center of the imaging surface of the X-ray imaging device, It has a linear shape when viewed from above (see FIGS. 10 and 11).
  • the irradiation port of the X-ray device 70 is disposed in the vicinity of the guide ring 59.
  • a part of the imaging unit 10 such as the light receiving unit 11 and a part of the imaging aid 50 such as the holding unit 51 are inserted into the oral cavity of the subject
  • the light receiving unit 11 and the photographing aid 50 are held by the grip 19 such that the tooth axis and the holding substrate 55 are perpendicular to each other.
  • the angle display unit 57 and the guide ring 59 are located outside the oral cavity.
  • the angle between the tooth axis of the tooth to be photographed and the holding substrate 55 may not be vertical.
  • the waterproof cover covers a portion (a part of the holding substrate 55, a part of the light receiving part 11, the cable 17 and the arm 18) of the dental intraoral radiography system 1 inserted into the oral cavity of the subject. It is desirable to be
  • the upper part of the front face part 11a of the light receiving part 11 is likely to contact the palate indirectly when covered with the waterproof cover and directly when not covered.
  • the portion containing the X-ray imaging device in the present embodiment, the front surface 11a of the light receiving unit 11
  • the portion containing the X-ray imaging device is often made of a material harder than rubber, and when the hard material contacts the palate, Subject may feel pain.
  • the four corners (corners) of the portion containing the X-ray imaging device are hard, there is a high possibility that the subject feels pain by touching this.
  • the cap 30 made of a soft material such as rubber is interposed between the subject's palate and the part containing the X-ray imaging element, the part containing the X-ray imaging element (especially four corners) It is difficult for the subject to feel the hardness of the subject, and even when the subject's palate is touched, it is possible to reduce the subject's pain.
  • the process of including an X-ray imaging element with this soft material so that it may not shift from a predetermined position is normal. It is more difficult than the process of including the X-ray imaging device in a hard material.
  • the manufacturing process can be simplified because it is sufficient to cover the soft material cap 30 regardless of the process of containing the X-ray imaging device, and the normal hard material can be X-ray. The pain of the subject can be alleviated only by covering the cap 30 with an existing product made by including the imaging device.
  • the waterproof cover is a first waterproof cover 91 that covers a part of the imaging unit 10 (the light receiving unit 11, the cable 17 and a part of the arm 18) and the cap 30, and a part of the imaging aid 50 (a holding unit 51 ,
  • the second waterproof cover 92 covering a part of the holding substrate 55 is preferably configured separately (see FIG. 12).
  • both the first waterproof cover 91 and the second waterproof cover 92 have a simple shape as compared with the waterproof cover integrally covering a part of the photographing unit 10, a part of the cap 30, and a part of the photographing aid 50.
  • the first waterproof cover 91 and the second waterproof cover 92 are sandwiched in a portion where the holding unit 51 sandwiches the light receiving unit 11.
  • the cap 30 is attached to the front face portion 11a of the light receiving portion 11, the light receiving portion 11 is attached to the holding portion 51, and a part of the holding substrate 55, the light receiving portion 11 and the like are covered with a waterproof cover A portion including the light receiving unit 11 of the intraoral imaging system 1 is inserted into the oral cavity of a subject having a tooth to be imaged.
  • the positional relationship between the light receiving unit 11 and the holding substrate 55 in the oral cavity is determined based on the shape of the subject's oral cavity, the position at which the dental intraoral imaging system 1 is inserted, and the like, and the angle ⁇ is determined.
  • the user of the dental intraoral radiography system 1 looks at the scale of the angle display unit 57 to confirm the mark line closest to the reference position, and the positioning mark corresponding to the mark line in the positioning portion 59a of the guide ring 59
  • the irradiation port of the X-ray apparatus 70 is installed in accordance with the index. After that, an imaging operation is performed by performing predetermined operations such as X-ray irradiation by the X-ray apparatus 70, input of a chart number, start-up of a power supply, and the like.
  • the X-ray imaging device captures 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 the image processing apparatus built in the grip 19 (or an external image processing apparatus connected to the grip 19 by wire or wirelessly) Applied.
  • the central axis LX of the X-ray beam emitted from the X-ray source LS is, for example, a plane including the imaging surface of the X-ray receiving unit contained in the light receiving unit 11 and the tooth axis of the tooth to be imaged It is possible to make the X-ray image of the tooth to be photographed in a state close to the actual length by means of the bisecting method because it can be made substantially perpendicular to the dividing surface.
  • the central axis LX of the X-ray bundle includes the imaging surface of the X-ray imaging device incorporated in the light receiving unit 11 as viewed from the side.
  • the shape of the side portion of the guide ring 59 and the positioning mark of the positioning portion 59a have been determined so as to be substantially perpendicular to the bisector of the face and the tooth axis of the imaging target tooth, These may be determined in consideration of the photographing method of
  • the shape of the side portion of the guide ring 59 or the central axis LX of the X-ray bundle is substantially perpendicular to the plane including the imaging surface of the X-ray imaging device built in the light receiving unit 11 as viewed from the side.
  • the positioning mark of the positioning portion 59a may be determined.
  • the holding portion 51 rotates about the rotation axis 53, the angle ⁇ between the holding portion 51 and the holding substrate 55 changes, and information on the angle ⁇ is displayed using the angle display portion 57.
  • holding part 51 may be fixed to holding board 55, and angle theta may be fixed.
  • the rotary shaft 53 and the angle display unit 57 become unnecessary, and the positioning unit 59a of the guide ring 59 has only an optimum positioning mark corresponding to the fixed angle ⁇ .
  • the light receiving unit 11 including the X-ray imaging device and the imaging support tool 50 including the holding substrate 55 are separately configured, and the light receiving unit 11 is attached to the holding unit 51 of the imaging support tool 50.
  • the middle unit 11b protruding in the back direction from the front unit 11a where the X-ray imaging device is located is sandwiched between the lower portion 51a and the upper portion 51b of the holding unit 51.
  • the portion where the X-ray imaging device is located is sandwiched in the vertical and horizontal directions perpendicular to the normal of the imaging surface, the substantial size of the portion becomes large, and interference with the palate and teeth around the tooth to be imaged Therefore, there is a problem that it becomes difficult to secure an appropriate imaging position, but as in the present embodiment, the size of the vertical direction and the lateral direction of the portion where the X-ray imaging device is increased by such a pinching mechanism Because there is no such problem does not occur.
  • the form which integrates the light-receiving part 11 and the imaging auxiliary tool 50 containing the holding part 51 is also considered.
  • the holding of the light receiving unit 11 and the like is performed by holding the grip 19, there is no need to engage the holding substrate 55 for holding the light receiving unit 11 and the like, and the opening It is possible to shoot while maintaining the state. For this reason, although the thickness of the light receiving unit 11 increases in the depth direction by the amount of the intermediate unit 11b, there is little possibility that the shooting will be disturbed.
  • the cap 30 is attached to the upper part of the imaging surface, although the vertical direction perpendicular to the imaging surface normal is longer than the horizontal direction.
  • the vertical direction perpendicular to the vertical direction may be shorter than the horizontal direction, and the cap 30 may be attached to the upper side.
  • the position where the cap 30 is attached is not limited to the form attached to the upper part of the part including the X-ray imaging device, but may be the form attached to the side or lower part. This is because depending on the posture in which imaging is performed, it is conceivable that the side or lower part may come into contact with the subject such as the palate.

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Abstract

[Problem] To provide an intraoral imaging system for dentistry including: a light receiving unit that includes an X-ray imaging element; and a mechanism that is detachable from an imaging auxiliary tool. [Solution] An intraoral imaging system for dentistry is provided with an imaging unit (10) that includes a light receiving unit (11) having an X-ray imaging element. The intraoral imaging system for dentistry is also provided with an imaging auxiliary tool (50) including: a holder base plate (55); and a holding part (51) that holds the light receiving unit (11), and is provided on the end of a section of the holder base plate (55) inserted into the oral cavity during imaging using an X-ray apparatus. The holding part (51) holds the light receiving unit (11) by clamping a section of the light receiving unit (11) that projects in the direction of the back surface.

Description

歯科用口腔内撮影システムDental intraoral imaging system
　本発明は、歯科用口腔内撮影システムに関する。 The present invention relates to a dental intraoral imaging system.
　特許文献１のように、Ｘ線装置を使った歯牙の撮影において使用される撮影補助具（インジケータ）が提案されている。 As in Patent Document 1, an imaging aid (indicator) used in imaging a tooth using an X-ray apparatus has been proposed.
特開２００４－１７４１６２号公報Unexamined-Japanese-Patent No. 2004-174162
　Ｘ線フィルムを使用する場合には、特許文献１のようなクリップでＸ線フィルムを撮影補助具に取り付ける形態が考えられるが、厚みがあるＸ線撮像素子を含む受光部を撮影補助具に取り付けるには、別の取り付け方法を考える必要がある。 When an X-ray film is used, the X-ray film may be attached to the imaging aid with a clip as in Patent Document 1, but a light receiving unit including a thick X-ray imaging device may be attached to the imaging aid You need to consider another mounting method.
　したがって本発明の目的は、Ｘ線撮像素子を含む受光部と、撮影補助具との着脱可能機構を含む歯科用口腔内撮影システムを提供することである。 Therefore, an object of the present invention is to provide a dental intraoral radiography system including a light receiving unit including an X-ray imaging device and a detachable mechanism for a radiography aid.
　本発明に係る歯科用口腔内撮影システムは、Ｘ線撮像素子を有する受光部を有する撮影部と、保定基板と、Ｘ線装置を使った撮影時に、保定基板の口腔内に挿入される部分の端部に設けられ、受光部を保持する保持部とを有する撮影補助具とを備え、保持部は、受光部の背面方向に突出した部分を挟み込んで受光部を保持する。 The dental intraoral radiography system according to the present invention comprises a radiographing unit having a light receiving unit having an X-ray imaging device, a holding substrate, and a portion of the holding substrate inserted into the oral cavity when radiographing using an X-ray device. An imaging support provided at an end portion and having a holding unit for holding the light receiving unit; and the holding unit holds the light receiving unit by sandwiching a portion of the light receiving unit that protrudes in the back direction.
　Ｘ線撮像素子を含む受光部と、保定基板を含む撮影補助具が別体で構成され、受光部が、撮影補助具の保持部に取り付けられる。 The light receiving unit including the X-ray imaging device and the imaging support tool including the holding substrate are separately configured, and the light receiving unit is attached to the holding unit of the imaging support tool.
　受光部を保持部に取り付ける際に、Ｘ線撮像素子がある部分から背面方向に突出した部分を、保持部が挟み込む。Ｘ線撮像素子がある部分を撮像面の法線に垂直な上下方向や左右方向で挟み込むと、かかる部分の実質的なサイズが大きくなってしまい、口蓋や撮影対象歯牙の周囲の歯牙との干渉で、適切な撮影位置を確保することが難しくなる問題があるが、かかる挟み込みに関する機構によって、Ｘ線撮像素子がある部分の上下方向や左右方向のサイズが大きくなることは無いため、かかる問題は発生しない。 When the light receiving unit is attached to the holding unit, the holding unit sandwiches a portion protruding in the back direction from the portion where the X-ray imaging device is present. When the portion where the X-ray imaging device is located is sandwiched in the vertical and horizontal directions perpendicular to the normal of the imaging surface, the substantial size of the portion becomes large, and interference with the palate and teeth around the tooth to be imaged Therefore, there is a problem that it becomes difficult to secure an appropriate imaging position, but this problem does not increase the size in the vertical or horizontal direction of the portion where the X-ray imaging device is located due to the mechanism related to such pinching. It does not occur.
　挟み込んだ状態を解除すれば、保持部による受光部の保持状態を解除出来る。すなわち、保持部による挟み込み機構により、受光部の着脱が容易に行える。 If the pinched state is released, the holding state of the light receiving unit by the holding unit can be released. That is, the light receiving unit can be easily attached and detached by the pinching mechanism by the holding unit.
　好ましくは、受光部の背面方向に突出した部分は、保持部によって左右方向若しくは上下方向に挟まれる。 Preferably, the portion of the light receiving portion that protrudes in the back direction is sandwiched by the holding portion in the left-right direction or the up-down direction.
　また、好ましくは、保持部は、受光部の背面方向に突出した部分を挟んだ状態で固定する付勢部材を有する。 In addition, preferably, the holding unit includes an urging member that fixes the holding unit in a state in which the protruding portion in the back direction of the light receiving unit is sandwiched.
　また、好ましくは、受光部は、Ｘ線撮像素子を有する前面部と、中間部と、背面部とを有し、前面部と背面部で挟まれる中間部は、前面部の背面側の一部が背面方向に突出する形状を有し、中間部の高さ方向の寸法が、前面部や背面部よりも短く、中間部は、保持部によって上下方向に挟まれる。 Preferably, the light receiving unit has a front surface portion having an X-ray imaging device, an intermediate portion, and a back surface portion, and the intermediate portion sandwiched between the front surface portion and the back surface portion is a part of the back surface side of the front surface portion Has a shape projecting in the back direction, the dimension in the height direction of the middle part is shorter than the front and back parts, and the middle part is vertically held by the holding part.
　前面部と背面部とで、中間部が凹んだ形状にすることで、凹んだ部分で保持部と中間部とが係合し、保持部が中間部を挟んだ時に、外れにくいメリットを有する。 By forming the middle part in a concave shape in the front and back parts, the holding part and the middle part are engaged in the recessed part, and when the holding part sandwiches the middle part, there is a merit that it is difficult to separate.
　また、好ましくは、撮影部は、受光部に設けられたボールジョイントと腕部を介して受光部に接続されるグリップを有し、グリップを把持することにより、腕部とＸ線撮像素子の撮像面とのなす角が調整可能な状態で、受光部と受光部が取り付けられた撮影補助具とが保持される。 In addition, preferably, the imaging unit includes a ball joint provided in the light receiving unit and a grip connected to the light receiving unit via the arm, and by gripping the grip, imaging of the arm and the X-ray imaging device The light receiving unit and the imaging aid attached with the light receiving unit are held in a state where the angle formed with the surface can be adjusted.
　受光部などの保持は、グリップを把持することにより行われるため、受光部などの保持のために、保定基板を咬合する必要がなく、口を開けた状態を維持したまま、撮影が可能である。このため、Ｘ線撮像素子がある部分から突出した所の分だけ、受光部は奥行き方向に厚みが増えるが、撮影に支障を来す可能性は少ない。 The holding of the light receiving portion and the like is performed by holding the grip, and therefore, there is no need to engage the holding substrate for holding the light receiving portion and the like, and photographing is possible while maintaining the open mouth. . For this reason, although the thickness of the light receiving unit increases in the depth direction by an amount that protrudes from the portion where the X-ray imaging device is present, there is little possibility that the imaging will be disturbed.
　また、好ましくは、保定基板は、保持部を回転可能な状態で保持し、撮影補助具は、保持部の回転状態を表示する角度表示部を有する。 In addition, preferably, the holding substrate holds the holding unit in a rotatable state, and the photographing aid includes an angle display unit that displays the rotation state of the holding unit.
　口腔内に挿入されて見えない保持部と保定基板とのなす角度に関する情報を読み取ることが可能になり、Ｘ線装置を配置する際の位置合わせに使用される。 It becomes possible to read information on the angle between the holding part, which is inserted into the oral cavity and can not be seen, and the holding substrate, and is used for alignment when placing the X-ray apparatus.
　また、好ましくは、受光部を含む撮影部の一部を覆う第１防水カバーと、保持部を含む撮影補助具の一部を覆う第2防水カバーとを更に備え、第1防水カバーと、第2防水カバーとは別体で構成される。 In addition, preferably, a first waterproof cover that covers a part of the photographing unit including the light receiving unit, and a second waterproof cover that covers a part of the photographing aid including the holding unit, the first waterproof cover; (2) Separately from the waterproof cover.
　以上のように本発明によれば、Ｘ線撮像素子を含む受光部と、撮影補助具との着脱可能機構を含む歯科用口腔内撮影システムを提供することができる。 As described above, according to the present invention, it is possible to provide a dental intraoral radiography system including a light receiving unit including an X-ray imaging device and a detachable mechanism with a radiography aid.
本実施形態における歯科用口腔内撮影システムの構成図である。It is a block diagram of the dental intraoral imaging system in this embodiment. キャップを取り付ける前の撮影部とキャップとを背面から見た斜視図である。It is the perspective view which looked at the imaging | photography part before attaching a cap, and a cap from the back. キャップを取り付ける前の撮影部とキャップとを前面から見た斜視図である。It is the perspective view which looked at the imaging | photography part before attaching a cap, and a cap from the front. キャップを取り付けた後の撮影部とキャップとを背面から見た斜視図である。It is the perspective view which looked at the imaging | photography part after attaching a cap, and a cap from the back. キャップを取り付けた後の撮影部とキャップとを前面から見た斜視図である。It is the perspective view which looked at the imaging | photography part after attaching a cap, and a cap from the front. 撮影部を取り付ける前の撮影補助具を背面から見た斜視図である。It is the perspective view which looked at the photography auxiliary tool before attaching an imaging part from the back. 撮影部を取り付ける前の撮影補助具を前面から見た斜視図である。It is the perspective view which looked at the imaging auxiliary tool before attaching an imaging part from the front. 撮影部を取り付けた後の撮影補助具を背面から見た斜視図である。It is the perspective view which looked at the imaging auxiliary tool after attaching an imaging part from the back. 撮影部を取り付けた後の撮影補助具を前面から見た斜視図である。It is the perspective view which looked at the imaging auxiliary tool after attaching an imaging part from the front. 撮影部、撮影補助具、及びＸ線装置の構成を示す側面図である。It is a side view which shows the structure of an imaging | photography part, an imaging assistance tool, and an X-ray apparatus. 撮影部、撮影補助具、及びＸ線装置の構成を示す上面図である。It is a top view which shows the structure of an imaging | photography part, an imaging assistance tool, and an X-ray apparatus. 第１防水カバー、第２防水カバーを取り付けた状態における、撮影部、撮影補助具、及びＸ線装置の構成を示す側面図である。It is a side view which shows the structure of an imaging | photography part, an imaging assistance tool, and a X-ray apparatus in the state which attached the 1st waterproof cover and the 2nd waterproof cover. 撮像部を左右で挟み込む形態における、撮像部を取り付ける前の撮影補助具を背面から見た斜視図である。It is the perspective view which looked at the imaging auxiliary tool before attaching an imaging part in the form which inserts an imaging part by right and left from the back. 撮像部を左右で挟み込む形態における、撮像部を取り付けた後の撮影補助具を背面から見た斜視図である。It is the perspective view which looked at the imaging auxiliary tool after attaching an imaging part in the form which pinches an imaging part by right and left from the back.
　以下、本実施形態における歯科用口腔内撮影システムの構成について、図を用いて説明する。本実施形態に係る歯科用口腔内撮影システム１は、撮影部１０、キャップ３０、撮影補助具（インジケータ）５０、Ｘ線装置７０を備える（図１参照）。 Hereinafter, the configuration of the dental intraoral imaging system according to the present embodiment will be described with reference to the drawings. A dental intraoral radiography system 1 according to the present embodiment includes a radiographing unit 10, a cap 30, a radiography aid (indicator) 50, and an X-ray device 70 (see FIG. 1).
　撮影部１０の詳細について説明する（図２～図５参照）。撮影部１０は、受光部１１、ケーブル１７、腕部１８、グリップ１９を有する。 Details of the photographing unit 10 will be described (see FIGS. 2 to 5). The imaging unit 10 includes a light receiving unit 11, a cable 17, an arm 18, and a grip 19.
　受光部１１は、Ｘ線受光部を内蔵する板状部材である前面部１１ａ、中間部１１ｂ、腕部１８のボール１８ａを回転自在な状態で保持する背面部１１ｃを有する。 The light receiving portion 11 has a front surface portion 11a which is a plate-like member incorporating the X-ray light receiving portion, an intermediate portion 11b, and a back surface portion 11c which rotatably holds the ball 18a of the arm portion 18.
　前面部１１ａと背面部１１ｃで挟まれる中間部１１ｂは、前面部１１ａの背面側の一部が背面方向に突出する形状を有し、高さ方向（Ｘ線受光部に含まれるＸ線撮像素子の撮像面の法線に垂直な上下方向）の寸法が、前面部１１ａや背面部１１ｃよりも短く、後述する保持部５１の下部５１ａと上部５１ｂに挟まれる。前面部１１ａと背面部１１ｃとで、中間部１１ｂが凹んだ形状にすることで、凹んだ部分で保持部５１と中間部１１ｂとが係合し、保持部５１の下部５１ａと上部５１ｂが中間部１１ｂを挟んだ時に、外れにくいメリットを有する。 The intermediate portion 11b sandwiched between the front surface portion 11a and the back surface portion 11c has a shape in which a part on the back surface side of the front surface portion 11a protrudes in the back direction, and the height direction (X-ray imaging device included in the X-ray light receiving portion The dimension in the vertical direction perpendicular to the normal line of the imaging surface is shorter than the front surface portion 11a and the back surface portion 11c, and is sandwiched between the lower portion 51a and the upper portion 51b of the holding portion 51 described later. By forming the intermediate portion 11b into a concave shape by the front surface portion 11a and the rear surface portion 11c, the holding portion 51 and the intermediate portion 11b are engaged in the concave portion, and the lower portion 51a and the upper portion 51b of the holding portion 51 are intermediate When the part 11b is sandwiched, it has the merit of being hard to remove.
　但し、中間部１１ｂが、保持部５１で挟むことが出来れば良いため、前面部１１ａの一部が背面方向に突出する形状を中間部１１ｂが有していればよく、背面部１１ｃを設けない形態であってもよい。この場合には、中間部１１ｂが背面部を兼ね、ボール１８ａを保持したりすることになる。図１３や図１４では、背面部１１ｃが無く、ボール１８ａが中間部１１ｂに保持される形態を示す。 However, as long as the intermediate portion 11b can be sandwiched by the holding portion 51, it is sufficient that the intermediate portion 11b has a shape in which a part of the front surface portion 11a protrudes in the back direction, and the back surface portion 11c is not provided. It may be in the form. In this case, the intermediate portion 11b also serves as the back portion to hold the ball 18a. FIG. 13 and FIG. 14 show a mode in which the ball 18a is held by the intermediate portion 11b without the rear surface portion 11c.
　背面部１１ｃの背面側（若しくは底面側）には、後述する腕部１８のボール１８ａを受ける受け皿が設けられる。 On the back surface side (or bottom surface side) of the back surface portion 11c, a tray for receiving a ball 18a of an arm portion 18 described later is provided.
　ケーブル１７は、前面部１１ａに設けられたＸ線受光部への電力供給や信号送受信するための電気線であり、後述するグリップ１９と接続される。図１～図１２に示される形態では、ケーブル１７が、背面部１１ｃで、受光部１１と接続される形態を示すが、中間部１１ｂや前面部１１ａで、受光部１１と接続される形態であってもよい（図１３、図１４参照）。 The cable 17 is an electric wire for supplying power to the X-ray light receiving unit provided in the front surface unit 11 a and transmitting / receiving a signal, and is connected to a grip 19 described later. In the embodiment shown in FIGS. 1 to 12, the cable 17 is connected to the light receiving unit 11 at the back surface 11c, but connected to the light receiving unit 11 at the intermediate unit 11b or the front surface 11a. It may be present (see FIG. 13 and FIG. 14).
　前面部１１ａのＸ線受光部は、Ｘ線を可視光に変換するシンチレータ、該可視光を電荷に変換するＣＣＤなどのＸ線撮像素子を有する。 The X-ray receiving unit of the front surface unit 11a has 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 charge.
　Ｘ線撮像素子と直接接続される電気線がフレキシブル基板上に設けられている場合には、中間部１１ｂや背面部１１ｃの内部に、フレキシブル基板とケーブル１７とを接続するための基板を設けても良い。 When 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 is provided in the middle portion 11b or the back portion 11c. Also good.
　また、前面部１１ａのＸ線撮像素子を駆動するための電気回路を、受光部１１の内部に設ける形態であってもよい。但し、Ｘ線撮像素子を駆動するための電気回路を構成する部材は、後述するグリップ１９や、さらに後段の画像処理装置などに配置される形態であってもよい。 In addition, an electric circuit for driving the X-ray imaging device of the front face portion 11 a may be provided inside the light receiving portion 11. However, a member constituting an electric circuit for driving the X-ray imaging device may be disposed in a grip 19 described later, or an image processing apparatus further downstream.
　また、Ｘ線受光部からの信号送受信を、ケーブル１７を介して行う形態に代えて、無線で行う形態であってもよい。この場合には、受光部１１の内部に、無線通信を行う装置や、かかる装置やＸ線撮像素子を駆動するバッテリーを内蔵する。 Further, instead of the mode in which the signal transmission / reception from the X-ray light receiving unit is performed via the cable 17, the mode may be performed wirelessly. 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.
　腕部１８は、ボール１８ａ、第１腕部１８ｂ１、第２腕部１８ｂ２、接続部１８ｃを有する。 The arm 18 includes a ball 18a, a first arm 18b1, a second arm 18b2, and a connection 18c.
　第１腕部１８ｂ１は、一方の端部がボール１８ａに固定され、他方の端部が接続部１８ｃと接続される棒状部材である。第１腕部１８ｂ１と、背面部１１ｃとのなす角度は、ボールジョイントを構成するボール１８ａと背面部１１ｃに設けられた受け皿とを介して、自在に変更出来る。 The first arm 18b1 is a rod-like member having one end fixed to the ball 18a and the other end connected to the connecting portion 18c. The angle between the first arm 18b1 and the back surface 11c can be freely changed via the ball 18a constituting the ball joint and the pan provided on the back surface 11c.
　第２腕部１８ｂ２は、一方の端部が接続部１８ｃと接続され、他方の端部がグリップ１９に固定される棒状部材である。接続部１８ｃは、第１腕部１８ｂ１と第２腕部１８ｂ２とのなす角度を自在に変更出来、且つその角度を固定出来る状態で、これらを保持する。 The second arm 18 b 2 is a rod-like member whose one end is connected to the connection 18 c and the other end is fixed to the grip 19. The connecting portion 18c holds the first arm 18b1 and the second arm 18b2 in such a manner that the angle between the first arm 18b1 and the second arm 18b2 can be freely changed and the angle can be fixed.
　第１腕部１８ｂ１、第２腕部１８ｂ２の位置関係を変化させることにより、グリップ１９を持った状態で、前面部１１ａのＸ線撮像素子の撮像面の法線の方向を自在に変化させることが可能になる。すなわち、使用者（術者若しくは被験者）がグリップ１９を把持することにより、第１腕部１８ｂ１とＸ線撮像素子の撮像面とのなす角が調整可能な状態で、受光部１１が保持される。なお、ケーブル１７は、紐状部材で、第２腕部１８ｂ２等にくくりつける形態や、第２腕部１８ｂ２の内部を通る形態であってもよい（図１３、図１４参照）。 By changing the positional relationship between the first arm 18b1 and the second arm 18b2, it is possible to freely change the direction of the normal to the imaging surface of the X-ray imaging device of the front face 11a while holding the grip 19 Becomes possible. That is, when the user (the operator or the subject) grips the grip 19, the light receiving unit 11 is held in a state where the angle between the first arm 18b1 and the imaging surface of the X-ray imaging device can be adjusted. . The cable 17 may be a string-like member, and may be configured to stick to the second arm 18b2 or may pass through the inside of the second arm 18b2 (see FIGS. 13 and 14).
　なお、本実施形態では、二本の棒状部材（第１腕部１８ｂ１と第２腕部１８ｂ２）を使って、受光部１１などを保持する方向を調整する形態を説明するが、棒状部材の数はこれに限られるものではない。 In the present embodiment, a mode is described in which the direction in which the light receiving unit 11 is held is adjusted by using two rod-like members (the first arm 18 b 1 and the second arm 18 b 2). Is not limited to this.
　グリップ１９は、ケーブル１７や腕部１８を介して、受光部１１と接続される。グリップ１９の内部には、Ｘ線撮像素子に電力を供給するバッテリーやＸ線撮像素子を制御する制御部やＸ線撮像素子で得られた画像信号に画像処理を施す画像処理装置を内蔵する形態であってもよいし、グリップ１９から、外部の画像処理装置（例えばパソコン）に、有線か無線で画像信号を伝達する形態であってもよい。 The grip 19 is connected to the light receiving unit 11 via the cable 17 and the arm 18. The grip 19 incorporates a battery for supplying power to the X-ray imaging device, a control unit for controlling the X-ray imaging device, and an image processing apparatus for performing image processing on an image signal obtained by the X-ray imaging device. The image signal may be transmitted from the grip 19 to an external image processing apparatus (for example, a personal computer) in a wired or wireless manner.
　グリップ１９は、被験者が保持する形態であってもよいし、歯科医などの術者が把持する形態であってもよいため、被験者が咬合をうまく行えない場合でも、Ｘ線撮像素子等を口腔内に維持することが可能になる。また、グリップ１９の把持により、歯科用口腔内撮影システム１のグリップ１９以外の部材（受光部１１や受光部１１を保持する撮影補助具５０）が保持されるため、咬合により保持される形態に比べて、保定基板５５等の重量が大きくなっても保持が容易に行えるメリットを有する。 The grip 19 may be held by the subject or held by an operator such as a dentist. Therefore, even if the subject can not perform occlusion properly, the X-ray imaging device etc. It will be possible to keep it within. In addition, since the members other than the grip 19 of the dental intraoral radiography system 1 (the light receiving unit 11 and the photographing aid 50 for holding the light receiving unit 11) are held by gripping the grip 19, the form is held by occlusion. Compared with this, there is an advantage that the holding can be easily performed even if the weight of the holding substrate 55 or the like becomes large.
　また、グリップ１９は、保定基板５５や受光部１１に比べて大きさの制限が緩く、内部にバッテリーなどの電気部品を内蔵させるスペースを確保しやすい。また、グリップ１９の内部に電気部品を出来るだけ集めることで、歯科用口腔内撮影システム１のグリップ１９以外の部材（受光部１１や撮影補助具５０）を軽くすることが可能になり、グリップ１９を把持した時に、安定した状態で、歯科用口腔内撮影システム１のグリップ１９以外の部材（受光部１１や撮影補助具５０）を保持することが可能になる。 In addition, the grip 19 is looser in size than the holding substrate 55 and the light receiving portion 11, and it is easy to secure a space for incorporating an electric component such as a battery inside. In addition, by collecting the electric components as much as possible in the grip 19, it becomes possible to lighten the members (the light receiving unit 11 and the photographing aid 50) other than the grip 19 of the intraoral dental intraoral radiography system 1. When the user grips, the members (the light receiving unit 11 and the imaging aid 50) other than the grip 19 of the intraoral dental intraoral imaging system 1 can be held in a stable state.
　次に、キャップ３０の構成について説明する（図２～図５参照）。キャップ３０は、受光部１１の前面部１１ａ（Ｘ線撮像素子を内包する部分）の上部にかぶせるものであり、Ｘ線撮像素子を内包する前面部１１ａよりも軟らかい素材（例えば、ゴムやエラストマー樹脂やシリコンなど）で構成される。 Next, the configuration of the cap 30 will be described (see FIGS. 2 to 5). The cap 30 covers the upper portion of the front surface portion 11a (portion enclosing the X-ray imaging device) of the light receiving portion 11 and is a material (for example, rubber or elastomer resin) softer than the front surface portion 11a encapsulating the X-ray imaging device And silicon etc.).
　キャップ３０の前面側の上下方向の寸法は、Ｘ線画像にキャップ３０の一部が写り込むことを防ぐために、前面部１１ａの上部にかぶせた時に、Ｘ線撮像素子の受光領域と重ならない長さに設定される。キャップ３０の背面側の上下方向の寸法は、Ｘ線撮像素子との関係では特に制約は無いが、前面側が比較的短いため、キャップ３０を前面部１１ａにかぶせた状態を安定的に維持するために、少なくとも前面側よりは長く設定するのが望ましい。 The dimension in the vertical direction of the front side of the cap 30 is a length that does not overlap with the light receiving area of the X-ray imaging device when the upper part of the front part 11a is covered to prevent a part of the cap 30 from being reflected in the X-ray image. Is set. The dimension in the vertical direction on the back side of the cap 30 is not particularly limited in relation to the X-ray imaging device, but the front side is relatively short, so that the cap 30 can be stably maintained in a covered state It is desirable to set at least longer than the front side.
　次に、撮影補助具５０の詳細について説明する（図６～図１１参照）。撮影補助具５０は、保持部５１、回転軸５３、保定基板５５、角度表示部５７、案内リング５９を有する。 Next, the details of the photographing aid 50 will be described (see FIGS. 6 to 11). The photographing aid 50 includes a holding unit 51, a rotating shaft 53, a holding substrate 55, an angle display unit 57, and a guide ring 59.
　保持部５１は、下部５１ａ、上部５１ｂ、下部５１ａと上部５１ｂとを接続する柱部５１ｃを有し、下部５１ａと上部５１ｂとで、上下方向で、受光部１１の中間部１１ｂを挟み、受光部１１を保持する。 The holding portion 51 has a lower portion 51a, an upper portion 51b, and a pillar portion 51c connecting the lower portion 51a and the upper portion 51b, and the lower portion 51a and the upper portion 51b sandwich the middle portion 11b of the light receiving portion 11 in the vertical direction. Hold the part 11.
　下部５１ａ、上部５１ｂの中間部１１ｂを挟む部分における厚さ方向の寸法は、中間部１１ｂの厚さ方向の寸法（前面部１１ａと背面部１１ｃの距離）とほぼ同じ長さにするのが望ましい。 The dimension in the thickness direction of the lower portion 51a and the portion sandwiching the middle portion 11b of the upper portion 51b is preferably approximately the same length as the dimension in the thickness direction of the middle portion 11b (the distance between the front surface portion 11a and the back surface portion 11c) .
　中間部１１ｂを挟む方法としては、下部５１ａと上部５１ｂとの距離を、中間部１１ｂの高さ方向の寸法と同程度にし、横方向から、中間部１１ｂを下部５１ａと上部５１ｂとの間に差し込むように受光部１１をスライドさせる方法が考えられる。 As a method of sandwiching the middle portion 11b, the distance between the lower portion 51a and the upper portion 51b is made about the same as the dimension in the height direction of the middle portion 11b, and the middle portion 11b is between the lower portion 51a and the upper portion 51b from the lateral direction. A method is conceivable in which the light receiving unit 11 is slid so as to be inserted.
　また、下部５１ａと上部５１ｂの少なくとも一方を移動可能な状態で柱部５１ｃに取り付ける形態も考えられる。この場合には、柱部５１ｃを上下方向に長くして、下部５１ａと上部５１ｂとの距離を、中間部１１ｂの高さ方向の寸法よりも長くしておき、中間部１１ｂを挟み込んだ後に、下部５１ａと上部５１ｂを近づけて、ネジや付勢部材などで中間部１１ｂを下部５１ａと上部５１ｂで挟み込んだ状態を固定させる。 Moreover, the form attached to the pillar part 51c in the state which can move at least one of the lower part 51a and the upper part 51b is also considered. In this case, after the column portion 51c is vertically elongated and the distance between the lower portion 51a and the upper portion 51b is longer than the dimension in the height direction of the intermediate portion 11b, and after the intermediate portion 11b is sandwiched, The lower portion 51a and the upper portion 51b are brought close to each other, and a state in which the intermediate portion 11b is sandwiched between the lower portion 51a and the upper portion 51b by a screw or a biasing member is fixed.
　挟み込んだ状態を解除すれば、保持部５１による受光部１１の保持状態を解除出来る。すなわち、保持部５１による挟み込み機構により、受光部１１の着脱が容易に行える。 When the pinched state is released, the holding state of the light receiving unit 11 by the holding unit 51 can be released. That is, the light receiving unit 11 can be easily attached and detached by the holding mechanism by the holding unit 51.
　保持部５１が受光部１１を保持した状態で、回転軸５３を中心に回転した時に、保持部５１や受光部１１が保定基板５５と干渉しないように、これらの部材の寸法が決定される。 The dimensions of these members are determined so that the holding portion 51 and the light receiving portion 11 do not interfere with the holding substrate 55 when the holding portion 51 holds the light receiving portion 11 and rotates around the rotation shaft 53.
　回転軸５３は、一方の端部で保持部５１と接続され、他方の端部で角度表示部５７、と接続され、保持部５１の回転軸５３を中心とした回転運動は、回転軸５３を介して角度表示部５７に伝達され、角度表示部５７を回転させる。同様に、角度表示部５７の回転軸５３を中心とした回転運動は、回転軸５３を介して保持部５１に伝達され、保持部５１を回転させる。なお、保持部５１の前面側（受光部１１の前面部１１ａが取り付けられる側）が、保定基板５５の上面に近づくような付勢力が与えられるように、回転軸５３にバネなどの付勢部材が設けられてもよい。 The rotation shaft 53 is connected to the holding portion 51 at one end, and connected to the angle display portion 57 at the other end, and the rotational movement of the holding portion 51 about the rotation shaft 53 is the rotation shaft 53 It is transmitted to the angle display unit 57 through the rotation unit, and rotates the angle display unit 57. Similarly, the rotational movement of the angle display unit 57 about the rotation shaft 53 is transmitted to the holding unit 51 via the rotation shaft 53, and the holding unit 51 is rotated. A biasing member such as a spring is provided on the rotation shaft 53 so that a biasing force is applied such that the front side of the holding portion 51 (the side on which the front portion 11a of the light receiving portion 11 is attached) approaches the top surface of the retaining substrate 55. May be provided.
　保定基板５５は、平板状に形成された部材で、本実施形態では、保定基板５５が、奥歯の撮影用に、上から見て略コの字形状を有する形態を説明するが、前歯の撮影用に、直線形状を有する形態であってもよい（不図示）。 The holding substrate 55 is a member formed in a flat plate shape, and in the present embodiment, the holding substrate 55 is described to have a substantially U-shape as viewed from above for photographing the back teeth. For this purpose, it may have a linear shape (not shown).
　角度表示部５７は、保持部５１が口腔内に挿入された時にも口腔外から見えるように、保定基板５５の口腔内に挿入されない部分に取り付けられ、円柱形状を有しており、該円柱形状の筒状部分（側面）や天面には、保持部５１と保定基板５５とのなす角度θ（図１０参照）に関連する情報として、複数の目印線を含む目盛りが付されている。 The angle display unit 57 is attached to a portion of the holding substrate 55 which is not inserted into the oral cavity so as to be visible from outside the oral cavity even when the holding unit 51 is inserted into the oral cavity, and has a cylindrical shape. A scale including a plurality of mark lines is attached to the cylindrical portion (side surface) and the top surface of the lens as information related to the angle θ (see FIG. 10) formed by the holding portion 51 and the holding substrate 55.
　角度表示部５７の目盛りと保定基板５５との位置関係に基づいて、すなわち、基準位置（例えば、保定基板５５の上面）と最も近い目印線に基づいて、口腔内に挿入されて見えない保持部５１と保定基板５５とのなす角度θに関する情報を読み取ることが可能になり、案内リング５９の位置決め部５９ａにおけるＸ線装置７０を配置する際の位置合わせに使用される。 Based on the positional relationship between the scale of the angle display portion 57 and the holding substrate 55, that is, based on the mark line closest to the reference position (for example, the upper surface of the holding substrate 55), the holding portion inserted into the oral cavity and invisible It becomes possible to read information on the angle θ formed between 51 and the holding substrate 55, and is used for alignment when positioning the X-ray device 70 in the positioning portion 59a of the guide ring 59.
　なお、リーマーを取り付けた状態では、撮影対象歯牙が保定基板５５に接触することが出来ないため、リーマーを避けるように、撮影時に撮影対象歯牙と対向する位置に切欠部（又は孔部）を設ける形態も考えられる。 When the reamer is attached, the tooth to be photographed can not contact the holding substrate 55, so a notch (or a hole) is provided at a position facing the tooth to be photographed at the time of photographing so as to avoid the reamer. The form is also conceivable.
　案内リング５９は、保定基板５５を介して、受光部１１を保持する保持部５１と対向する位置に設けられ、Ｘ線撮影におけるＸ線装置７０の照射口の位置決めに使用される。案内リング５９は、保持部５１側から見て縦長の略楕円形状を有する。 The guide ring 59 is provided at a position facing the holding unit 51 holding the light receiving unit 11 via the holding substrate 55, and is used to position the irradiation port of the X-ray apparatus 70 in X-ray imaging. The guide ring 59 has a vertically long, substantially elliptical shape when viewed from the holding portion 51 side.
　案内リング５９は、保定基板５５の上方から見て、Ｘ線撮像素子の撮像面の中心を通り、撮像面に垂直な基準線ＬＰ上にあって、撮像面から特定の距離（２００ｍｍ）だけ離れた位置にＸ線源ＬＳが配置されるように、Ｘ線源ＬＳを含むＸ線装置７０を位置決めするために使用される（図１１参照）。 The guide ring 59 passes through the center of the imaging surface of the X-ray imaging device as viewed from above the holding substrate 55, is on the reference line LP perpendicular to the imaging surface, and is separated from the imaging surface by a specific 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 position (see FIG. 11).
　案内リング５９の側部には、位置決め部５９ａが設けられる。位置決め部５９ａには、角度表示部５７の目盛りの目印線に対応する情報（複数の位置決め用目印）が記載される。対応関係にある角度表示部５７の目盛りの目印線と、位置決め部５９ａの位置決め用目印とは同じ色で示されるのが望ましい。 A positioning portion 59 a is provided on the side of the guide ring 59. Information (a plurality of positioning marks) corresponding to the mark lines of the scale of the angle display section 57 is described in the positioning section 59a. It is desirable that the mark line of the scale of the angle display portion 57 in the corresponding relationship and the positioning mark of the positioning portion 59a be shown in the same color.
　角度表示部５７の目盛りにおける目印線のうち基準位置（例えば、保定基板５５の上面）に最も近いものに対応する位置決め用目印に合わせて設置したＸ線源ＬＳから出射されるＸ線束の中心軸ＬＸが、保定基板５５の側方から見て、受光部１１に内蔵されたＸ線撮像素子の撮像面を含む面と撮影対象歯牙の歯軸との二等分面に略垂直にすることが出来るように、複数の位置決め用目印が位置決め部５９ａに設けられる（図１０参照）。 The central axis of the X-ray flux emitted from the X-ray source LS installed in alignment with the positioning mark corresponding to the one closest to the reference position (for example, the upper surface of the holding substrate 55) of the mark lines in the scale of the angle display 57 When viewed from the side of the holding substrate 55, LX is substantially perpendicular to the bisecting plane of the plane including the imaging plane of the X-ray imaging device incorporated in the light receiving unit 11 and the tooth axis of the tooth to be imaged As possible, a plurality of positioning marks are provided on the positioning portion 59a (see FIG. 10).
　角度θが小さい場合、すなわちＸ線撮像素子の撮像面が、保定基板５５の上面と平行に近い状態の場合には、保定基板５５から離れた位置決め用目印に対応する角度表示部５７の目盛りの目印線が基準位置に近くなる。 In the case where the angle θ is small, that is, when the imaging surface of the X-ray imaging device is close to parallel to the upper surface of the holding substrate 55, the scale of the scale of the angle display portion 57 corresponding to the positioning mark away from the holding substrate 55. The marker line is close to the reference position.
　角度θが大きい場合、すなわちＸ線撮像素子の撮像面が、保定基板５５の上面と垂直に近い状態の場合には、保定基板５５に近い位置決め用目印に対応する角度表示部５７の目盛りの目印線が基準位置に近くなる。 When the angle θ is large, that is, when the imaging surface of the X-ray imaging device is close to perpendicular to the upper surface of the holding substrate 55, the mark of the scale of the angle display unit 57 corresponding to the positioning mark near the holding substrate 55. The line is close to the reference position.
　Ｘ線装置７０は、１つのＸ線光源ＬＳから照射口を介してＸ線を照射する装置であり、Ｘ線画像を得る場合に使用される。Ｘ線装置７０の照射口は、Ｘ線源ＬＳから出射されるＸ線束の中心軸ＬＸに垂直な面を有する。 The X-ray apparatus 70 is an apparatus that emits X-rays from one X-ray light source LS via an irradiation port, and is used when obtaining an X-ray image. The irradiation port of the X-ray apparatus 70 has a plane perpendicular to the central axis LX of the X-ray flux emitted from the X-ray source LS.
　Ｘ線装置７０の照射口が、案内リング５９の所定の位置（基準位置に最も近い目盛りの目印線に対応した位置決め部５９ａの位置決め用目印に合わせた位置）に設置された場合に、上方から見て、Ｘ線源ＬＳから出射されるＸ線束の中心軸ＬＸが、Ｘ線撮像素子の撮像面の中心を通るように、案内リング５９は、側方から見て略円弧形状を有し、上方から見て直線形状を有する（図１０、図１１参照）。 When the irradiation port of the X-ray device 70 is installed at a predetermined position of the guide ring 59 (a position aligned with the positioning mark of the positioning portion 59a corresponding to the marking line of the scale closest to the reference position) As viewed from the side, the guide ring 59 has a substantially arc shape so that the central axis LX of the X-ray flux emitted from the X-ray source LS passes through the center of the imaging surface of the X-ray imaging device, It has a linear shape when viewed from above (see FIGS. 10 and 11).
　このため、保定基板５５の上方から見て、Ｘ線受光部の撮像面の中心を通り、撮像面に垂直な基準線ＬＰと、Ｘ線源ＬＳから出射されるＸ線束の中心軸ＬＸとが重なる位置関係で、Ｘ線装置７０の照射口は、案内リング５９の近傍に配置されることになる。 Therefore, when seen from above the holding substrate 55, the reference line LP passing through the center of the imaging surface of the X-ray receiving unit and perpendicular to the imaging surface, and the central axis LX of the X-ray flux emitted from the X-ray source LS In the overlapping positional relationship, the irradiation port of the X-ray device 70 is disposed in the vicinity of the guide ring 59.
　なお、側方から見て中心軸ＬＸと平行な直線状の指標をＸ線装置７０の側部に設け、かかる指標と案内リング５９の位置決め部５９ａの位置決め用目印とが一致させるようにすると、位置合わせが容易に行える。 If a linear index parallel to the central axis LX is provided on the side of the X-ray apparatus 70 as viewed from the side, and the index and the positioning mark of the positioning portion 59a of the guide ring 59 coincide with each other, Positioning can be easily performed.
　Ｘ線装置７０を使った撮影時は、受光部１１などの撮影部１０の一部や、保持部５１などの撮影補助具５０の一部が、被験者の口腔内に挿入され、撮影対象歯牙の歯軸と保定基板５５とが垂直になるような状態で、受光部１１や、撮影補助具５０がグリップ１９によって保持される。このとき、角度表示部５７、案内リング５９は、口腔外に位置する。但し、撮影対象歯牙の歯軸と保定基板５５とのなす角度は垂直で無くても良い。 At the time of imaging using the X-ray device 70, a part of the imaging unit 10 such as the light receiving unit 11 and a part of the imaging aid 50 such as the holding unit 51 are inserted into the oral cavity of the subject The light receiving unit 11 and the photographing aid 50 are held by the grip 19 such that the tooth axis and the holding substrate 55 are perpendicular to each other. At this time, the angle display unit 57 and the guide ring 59 are located outside the oral cavity. However, the angle between the tooth axis of the tooth to be photographed and the holding substrate 55 may not be vertical.
　また、撮影時には、歯科用口腔内撮影システム１の被験者の口腔内に挿入される部分（保定基板５５の一部、受光部１１、ケーブル１７や腕部１８の一部）に、防水カバーが覆われるのが望ましい。 Further, at the time of photographing, the waterproof cover covers a portion (a part of the holding substrate 55, a part of the light receiving part 11, the cable 17 and the arm 18) of the dental intraoral radiography system 1 inserted into the oral cavity of the subject. It is desirable to be
　受光部１１の前面部１１ａの上部は、防水カバーで覆われた場合には間接的に、覆われなかった場合には直接的に、口蓋に接触する可能性が高い。通常、Ｘ線撮像素子を内包する部分（本実施形態では、受光部１１の前面部１１ａ）は、ゴムよりも硬い素材で構成されることが多く、硬い素材が口蓋に接触した場合には、被験者が痛みを感じるおそれがある。特に、Ｘ線撮像素子を内包する部分の四隅（角の部分）が硬いと、ここに触れて被験者が痛みを感じる可能性が高い。本実施形態では、ゴムなどの軟らかい素材で構成されたキャップ３０が、被験者の口蓋とＸ線撮像素子を内包する部分との間に介在するため、Ｘ線撮像素子を内包する部分（特に四隅）の硬さを被験者が感じにくく、被験者の口蓋などに触れた場合でも、被験者の痛みを軽減することが可能になる。 The upper part of the front face part 11a of the light receiving part 11 is likely to contact the palate indirectly when covered with the waterproof cover and directly when not covered. Usually, the portion containing the X-ray imaging device (in the present embodiment, the front surface 11a of the light receiving unit 11) is often made of a material harder than rubber, and when the hard material contacts the palate, Subject may feel pain. In particular, if the four corners (corners) of the portion containing the X-ray imaging device are hard, there is a high possibility that the subject feels pain by touching this. In this embodiment, since the cap 30 made of a soft material such as rubber is interposed between the subject's palate and the part containing the X-ray imaging element, the part containing the X-ray imaging element (especially four corners) It is difficult for the subject to feel the hardness of the subject, and even when the subject's palate is touched, it is possible to reduce the subject's pain.
　なお、Ｘ線撮像素子を内包する部分をゴムなどの軟らかい素材で構成する形態も考えられるが、Ｘ線撮像素子を所定の位置からずれないように、かかる軟らかい素材で内包する工程は、通常の硬い素材でＸ線撮像素子を内包する工程よりも難易度が高い。これに対して、本実施形態では、Ｘ線撮像素子を内包する工程とは無関係に、軟らかい素材のキャップ３０をかぶせるだけで良いため、製造工程も簡素化出来るし、通常の硬い素材がＸ線撮像素子を内包して出来た既製品に対しても、キャップ３０をかぶせるだけで、被験者の痛みを軽減することが可能になる。 In addition, although the form which comprises the part which includes an X-ray imaging element with soft materials, such as rubber | gum, is also considered, the process of including an X-ray imaging element with this soft material so that it may not shift from a predetermined position is normal. It is more difficult than the process of including the X-ray imaging device in a hard material. On the other hand, in the present embodiment, the manufacturing process can be simplified because it is sufficient to cover the soft material cap 30 regardless of the process of containing the X-ray imaging device, and the normal hard material can be X-ray. The pain of the subject can be alleviated only by covering the cap 30 with an existing product made by including the imaging device.
　なお、防水カバーは、撮影部１０の一部（受光部１１、ケーブル１７や腕部１８の一部）とキャップ３０を覆う第１防水カバー９１と、撮影補助具５０の一部（保持部５１、保定基板５５の一部）を覆う第２防水カバー９２とが別体で構成されるのが望ましい（図１２参照）。この場合には、第１防水カバー９１も、第２防水カバー９２も、撮影部１０の一部とキャップ３０と撮影補助具５０の一部を一体で覆う防水カバーに比べて単純な形状にすることが可能になり、製作が容易になるメリットがある。なお、この場合には、保持部５１が受光部１１を挟み込む部分に、第１防水カバー９１と第２防水カバー９２とが挟み込まれる。 The waterproof cover is a first waterproof cover 91 that covers a part of the imaging unit 10 (the light receiving unit 11, the cable 17 and a part of the arm 18) and the cap 30, and a part of the imaging aid 50 (a holding unit 51 , And the second waterproof cover 92 covering a part of the holding substrate 55 is preferably configured separately (see FIG. 12). In this case, both the first waterproof cover 91 and the second waterproof cover 92 have a simple shape as compared with the waterproof cover integrally covering a part of the photographing unit 10, a part of the cap 30, and a part of the photographing aid 50. There is a merit that it becomes possible and manufacture becomes easy. In this case, the first waterproof cover 91 and the second waterproof cover 92 are sandwiched in a portion where the holding unit 51 sandwiches the light receiving unit 11.
　次に、動作手順について説明する。キャップ３０が受光部１１の前面部１１ａに取り付けられ、受光部１１が保持部５１に取り付けられ、保定基板５５の一部や、受光部１１等が、防水カバーで覆われた状態で、歯科用口腔内撮影システム１の受光部１１を含む部分が、撮影対象歯牙を有する被験者の口腔内に挿入される。 Next, the operation procedure will be described. The cap 30 is attached to the front face portion 11a of the light receiving portion 11, the light receiving portion 11 is attached to the holding portion 51, and a part of the holding substrate 55, the light receiving portion 11 and the like are covered with a waterproof cover A portion including the light receiving unit 11 of the intraoral imaging system 1 is inserted into the oral cavity of a subject having a tooth to be imaged.
　被験者の口腔内の形状や、歯科用口腔内撮影システム１が挿入された位置などに基づいて、口腔内における受光部１１と保定基板５５との位置関係が決定し、角度θが決定する。 The positional relationship between the light receiving unit 11 and the holding substrate 55 in the oral cavity is determined based on the shape of the subject's oral cavity, the position at which the dental intraoral imaging system 1 is inserted, and the like, and the angle θ is determined.
　歯科用口腔内撮影システム１の使用者は、角度表示部５７の目盛りを見て、基準位置に最も近い目印線を確認し、案内リング５９の位置決め部５９ａにおける当該目印線に対応する位置決め用目印に指標を合わせるようにして、Ｘ線装置７０の照射口を設置する。その後、Ｘ線装置７０によるＸ線の照射、カルテ番号の入力、電源の立ち上げなど、所定の操作を行うことにより、撮像動作が行われる。 The user of the dental intraoral radiography system 1 looks at the scale of the angle display unit 57 to confirm the mark line closest to the reference position, and the positioning mark corresponding to the mark line in the positioning portion 59a of the guide ring 59 The irradiation port of the X-ray apparatus 70 is installed in accordance with the index. After that, an imaging operation is performed by performing predetermined operations such as X-ray irradiation by the X-ray apparatus 70, input of a chart number, start-up of a power supply, and the like.
　撮像動作においては、Ｘ線撮像素子は、シンチレータで変換された可視光を撮像する。撮像動作で得られた画像信号は、グリップ１９に内蔵された画像処理装置（若しくは、グリップ１９と有線または無線で接続された外部の画像処理装置）で、Ｘ線画像を得るための画像処理が施される。 In the imaging operation, the X-ray imaging device captures 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 the image processing apparatus built in the grip 19 (or an external image processing apparatus connected to the grip 19 by wire or wirelessly) Applied.
　また、基準位置（例えば、保定基板５５の上面）に一番近い目印線に対応する位置決め部５９ａの位置決め用目印に合わせて、Ｘ線装置７０の照射口を配置すれば、Ｘ線装置７０のＸ線源ＬＳから出射されるＸ線束の中心軸ＬＸが、側方から見て、受光部１１に内蔵されたＸ線受光部の撮像面を含む面と撮影対象歯牙の歯軸との二等分面に略垂直にすることが出来、二等分面撮影法により、実長に近い状態で撮影対象歯牙のＸ線画像を得ることが可能になる。 In addition, if the irradiation port of the X-ray device 70 is arranged in alignment with the positioning mark of the positioning portion 59a corresponding to the mark line closest to the reference position (for example, the upper surface of the holding substrate 55), When viewed from the side, the central axis LX of the X-ray beam emitted from the X-ray source LS is, for example, a plane including the imaging surface of the X-ray receiving unit contained in the light receiving unit 11 and the tooth axis of the tooth to be imaged It is possible to make the X-ray image of the tooth to be photographed in a state close to the actual length by means of the bisecting method because it can be made substantially perpendicular to the dividing surface.
　なお、本実施形態では、二等分面撮影法を考慮して、すなわち、Ｘ線束の中心軸ＬＸが、側方から見て、受光部１１に内蔵されたＸ線撮像素子の撮像面を含む面と撮影対象歯牙の歯軸との二等分面に略垂直になるように、案内リング５９の側部の形状や、位置決め部５９ａの位置決め用目印が決定される形態を説明したが、他の撮影法を考慮してこれらを決定する形態であってもよい。 In the present embodiment, in consideration of the bisecting method, that is, the central axis LX of the X-ray bundle includes the imaging surface of the X-ray imaging device incorporated in the light receiving unit 11 as viewed from the side. Although the shape of the side portion of the guide ring 59 and the positioning mark of the positioning portion 59a have been determined so as to be substantially perpendicular to the bisector of the face and the tooth axis of the imaging target tooth, These may be determined in consideration of the photographing method of
　例えば、Ｘ線束の中心軸ＬＸが、側方から見て、受光部１１に内蔵されたＸ線撮像素子の撮像面を含む面に略垂直になるように、案内リング５９の側部の形状や、位置決め部５９ａの位置決め用目印が決定される形態であってもよい。 For example, the shape of the side portion of the guide ring 59 or the central axis LX of the X-ray bundle is substantially perpendicular to the plane including the imaging surface of the X-ray imaging device built in the light receiving unit 11 as viewed from the side. The positioning mark of the positioning portion 59a may be determined.
　また、本実施形態では、保持部５１が回転軸５３を中心に回転し、保持部５１と保定基板５５とのなす角度θが変化し、角度θに関する情報を、角度表示部５７を使って口腔外に表示する形態を説明したが、保持部５１が保定基板５５に固定され、角度θが固定されたものであってもよい。この場合は、回転軸５３や角度表示部５７は不要になり、案内リング５９の位置決め部５９ａは、固定的な角度θに対応した最適な位置決め用目印だけを有する形態になる。 Further, in the present embodiment, the holding portion 51 rotates about the rotation axis 53, the angle θ between the holding portion 51 and the holding substrate 55 changes, and information on the angle θ is displayed using the angle display portion 57. Although the form which displays outside is explained, holding part 51 may be fixed to holding board 55, and angle theta may be fixed. In this case, the rotary shaft 53 and the angle display unit 57 become unnecessary, and the positioning unit 59a of the guide ring 59 has only an optimum positioning mark corresponding to the fixed angle θ.
　本実施形態では、Ｘ線撮像素子を含む受光部１１と、保定基板５５を含む撮影補助具５０が別体で構成され、受光部１１が、撮影補助具５０の保持部５１に取り付けられる。 In the present embodiment, the light receiving unit 11 including the X-ray imaging device and the imaging support tool 50 including the holding substrate 55 are separately configured, and the light receiving unit 11 is attached to the holding unit 51 of the imaging support tool 50.
　受光部１１を保持部５１に取り付ける際に、Ｘ線撮像素子がある前面部１１ａから背面方向に突出した中間部１１ｂを、保持部５１の下部５１ａと上部５１ｂとで挟み込む。Ｘ線撮像素子がある部分を撮像面の法線に垂直な上下方向や左右方向で挟み込むと、かかる部分の実質的なサイズが大きくなってしまい、口蓋や撮影対象歯牙の周囲の歯牙との干渉で、適切な撮影位置を確保することが難しくなる問題があるが、本実施形態のように、かかる挟み込み機構によって、Ｘ線撮像素子がある部分の上下方向や左右方向のサイズが大きくなることは無いため、かかる問題は発生しない。 When the light receiving unit 11 is attached to the holding unit 51, the middle unit 11b protruding in the back direction from the front unit 11a where the X-ray imaging device is located is sandwiched between the lower portion 51a and the upper portion 51b of the holding unit 51. When the portion where the X-ray imaging device is located is sandwiched in the vertical and horizontal directions perpendicular to the normal of the imaging surface, the substantial size of the portion becomes large, and interference with the palate and teeth around the tooth to be imaged Therefore, there is a problem that it becomes difficult to secure an appropriate imaging position, but as in the present embodiment, the size of the vertical direction and the lateral direction of the portion where the X-ray imaging device is increased by such a pinching mechanism Because there is no such problem does not occur.
　なお、受光部１１と、保持部５１を含む撮影補助具５０とを一体にする形態も考えられる。この場合には、右上用の撮影補助具と受光部とを一体にしたものと、右下用の撮影補助具と受光部とを一体にしたものの２種類の撮影装置を用意する必要があり、Ｘ線撮像素子のコストが他の部材に比べて高いため、２種類の撮影装置を用意するのはコスト的なデメリットが大きい。これに対して、本実施形態では、コストが高いＸ線撮像素子を含む撮影部１０は、１種類のものだけ用意すれば良いため、かかる問題は発生しない。 In addition, the form which integrates the light-receiving part 11 and the imaging auxiliary tool 50 containing the holding part 51 is also considered. In this case, it is necessary to prepare two types of imaging devices, one in which the upper right imaging aid and the light receiving unit are integrated, and one in which the lower right imaging aid and the light receiving unit are integrated. Since the cost of the X-ray imaging device is higher than that of other members, providing two types of imaging devices has a large cost disadvantage. On the other hand, in the present embodiment, such a problem does not occur because it is sufficient to prepare only one type of imaging unit 10 including an X-ray imaging device having high cost.
　また、本実施形態では、受光部１１などの保持は、グリップ１９を把持することにより行われるため、受光部１１などの保持のために、保定基板５５を咬合する必要がなく、口を開けた状態を維持したまま、撮影が可能である。このため、中間部１１ｂの分だけ、受光部１１は奥行き方向に厚みが増えるが、撮影に支障を来す可能性は少ない。 Further, in the present embodiment, since the holding of the light receiving unit 11 and the like is performed by holding the grip 19, there is no need to engage the holding substrate 55 for holding the light receiving unit 11 and the like, and the opening It is possible to shoot while maintaining the state. For this reason, although the thickness of the light receiving unit 11 increases in the depth direction by the amount of the intermediate unit 11b, there is little possibility that the shooting will be disturbed.
　なお、本実施形態では、撮像面の法線に垂直な上下方向で、受光部１１の背面方向に突出した部分（中間部１１ｂ）を挟み込む形態を説明したが、撮像面の法線に垂直な左右方向で、受光部１１の背面方向に突出した部分（中間部１１ｂ）を挟み込む形態であってもよい（図１３、図１４参照）。図１３、図１４に示す形態では、保持部５１の左右の棒状部材と、当該棒状部材を互いに近づく方向に付勢するバネなどの付勢部材（不図示）が設けられ、中間部１１ｂを挟み込んだ状態で固定する。 In the present embodiment, although the mode in which the portion (intermediate portion 11b) protruding in the back direction of the light receiving unit 11 is sandwiched in the vertical direction perpendicular to the normal of the imaging surface has been described, it is perpendicular to the normal of the imaging surface A configuration may be adopted in which the portion (intermediate portion 11b) protruding in the back direction of the light receiving portion 11 is sandwiched in the left-right direction (see FIGS. 13 and 14). In the embodiment shown in FIGS. 13 and 14, rod-like members on the left and right of the holding portion 51 and a biasing member (not shown) such as a spring for biasing the rod-like members toward each other are provided to sandwich the middle portion 11b. Fix it in place.
　また、Ｘ線撮像素子は、撮像面の法線に垂直な上下方向が、左右方向に比べて長い縦長のものを使用し、上部にキャップ３０を取り付ける形態を説明したが、撮像面の法線に垂直な上下方向が、左右方向に比べて短い横長のものを使用し、上部にキャップ３０を取り付ける形態であっても良い。また、キャップ３０を取り付ける位置は、Ｘ線撮像素子を内包する部分の上部に取り付ける形態だけでなく、側部や下部に取り付ける形態であってもよい。撮影を行う姿勢によっては、側部や下部が口蓋など被験者に接触する場合も考えられるからである。 In the X-ray imaging device, the cap 30 is attached to the upper part of the imaging surface, although the vertical direction perpendicular to the imaging surface normal is longer than the horizontal direction. The vertical direction perpendicular to the vertical direction may be shorter than the horizontal direction, and the cap 30 may be attached to the upper side. Further, the position where the cap 30 is attached is not limited to the form attached to the upper part of the part including the X-ray imaging device, but may be the form attached to the side or lower part. This is because depending on the posture in which imaging is performed, it is conceivable that the side or lower part may come into contact with the subject such as the palate.
　１　歯科用口腔内撮影システム
　１０　撮影部
　１１　受光部
　１１ａ　前面部
　１１ｂ　中間部
　１１ｃ　背面部
　１７　ケーブル
　１８　腕部
　１８ａ　ボール
　１８ｂ１、１８ｂ２　第１腕部、第２腕部
　１８ｃ　接続部
　１９　グリップ
　３０　キャップ
　５０　撮影補助具
　５１　保持部
　５３　回転軸
　５５　保定基板
　５７　角度表示部
　５９　案内リング
　５９ａ　位置決め部
　７０　Ｘ線装置
　９１、９２　第１防水カバー、第２防水カバー
　ＬＸ　中心軸
　ＬＰ　上方から見て、Ｘ線受光部の撮像面の中心を通り、撮像面に垂直な線
　ＬＳ　Ｘ線源 DESCRIPTION OF SYMBOLS 1 dental intraoral imaging system 10 imaging | photography part 11 light-receiving part 11a front part 11b middle part 11c back part 17 cable 18 arm 18a ball 18b1, 18b2 1st arm, 2nd arm 18c connection part 19 grip 30 cap 50 imaging Auxiliary tool 51 Holding part 53 Rotary shaft 55 Holding substrate 57 Angle display part 59 Guide ring 59a Positioning part 70 X-ray device 91, 92 First waterproof cover, second waterproof cover LX Center axis LP Seen from above, X-ray receiver A line passing through the center of the imaging plane of the object and perpendicular to the imaging plane

Claims (7)

  1. 　Ｘ線撮像素子を有する受光部を有する撮影部と、
    　保定基板と、Ｘ線装置を使った撮影時に、前記保定基板の口腔内に挿入される部分の端部に設けられ、前記受光部を保持する保持部とを有する撮影補助具とを備え、
    　前記保持部は、前記受光部の背面方向に突出した部分を挟み込んで前記受光部を保持することを特徴とする歯科用口腔内撮影システム。     An imaging unit having a light receiving unit having an X-ray imaging device;
    And a photographing support provided with a holding substrate and a holding unit provided at an end of a portion of the holding substrate to be inserted into the oral cavity at the time of photographing using an X-ray device, and holding the light receiving unit,
    The dental intraoral imaging system according to claim 1, wherein the holding unit holds the light receiving unit by sandwiching a portion of the light receiving unit that protrudes in the back direction.
  2. 　前記受光部の背面方向に突出した部分は、前記保持部によって左右方向若しくは上下方向に挟まれることを特徴とする請求項１に記載の歯科用口腔内撮影システム。 The dental intraoral intra-oral imaging system according to claim 1, wherein a portion of the light receiving unit that protrudes in the back direction is sandwiched by the holding unit in the left-right direction or the up-down direction.
  3. 　前記保持部は、前記受光部の背面方向に突出した部分を挟んだ状態で固定する付勢部材を有することを特徴とする請求項１に記載の歯科用口腔内撮影システム。 The dental intraoral photographing system according to claim 1, wherein the holding unit includes a biasing member that fixes the holding unit in a state in which a portion protruding in the back direction of the light receiving unit is sandwiched.
  4. 　前記受光部は、前記Ｘ線撮像素子を有する前面部と、中間部と、背面部とを有し、
    　前記前面部と前記背面部で挟まれる前記中間部は、前記前面部の背面側の一部が背面方向に突出する形状を有し、前記中間部の高さ方向の寸法が、前記前面部や前記背面部よりも短く、前記中間部は、前記保持部によって上下方向に挟まれることを特徴とする請求項１に記載の歯科用口腔内撮影システム。     The light receiving unit includes a front surface portion having the X-ray imaging device, an intermediate portion, and a back surface portion.
    The intermediate portion sandwiched between the front surface portion and the back surface portion has a shape in which a part on the back surface side of the front surface portion protrudes in the back surface direction, and the dimension in the height direction of the intermediate portion is the front surface portion or The dental intra-oral photographing system according to claim 1, wherein the intermediate portion is shorter than the back surface portion and vertically held by the holding portion.
  5. 　前記撮影部は、前記受光部に設けられたボールジョイントと腕部を介して前記受光部に接続されるグリップを有し、
    　前記グリップを把持することにより、前記腕部と前記Ｘ線撮像素子の撮像面とのなす角が調整可能な状態で、前記受光部と前記受光部が取り付けられた前記撮影補助具とが保持されることを特徴とする請求項１に記載の歯科用口腔内撮影システム。     The photographing unit includes a ball joint provided in the light receiving unit and a grip connected to the light receiving unit via an arm.
    By holding the grip, the light receiving unit and the imaging aid attached with the light receiving unit are held in a state in which the angle between the arm and the imaging surface of the X-ray imaging device can be adjusted. The dental intraoral radiography system according to claim 1, characterized in that:
  6. 　前記保定基板は、前記保持部を回転可能な状態で保持し、
    　前記撮影補助具は、前記保持部の回転状態を表示する角度表示部を有することを特徴とする請求項１に記載の歯科用口腔内撮影システム。     The holding substrate holds the holding portion rotatably.
    The dental intra-oral photographing system according to claim 1, wherein the photographing aid has an angle display unit for displaying a rotation state of the holding unit.
  7. 　前記受光部を含む前記撮影部の一部を覆う第１防水カバーと、
    　前記保持部を含む前記撮影補助具の一部を覆う第２防水カバーとを更に備え、
    　前記第１防水カバーと、前記第２防水カバーとは別体で構成されることを特徴とする請求項１に記載の歯科用口腔内撮影システム。     A first waterproof cover that covers a part of the imaging unit including the light receiving unit;
    And a second waterproof cover covering a part of the photographing aid including the holding unit,
    The dental intraoral photographing system according to claim 1, wherein the first waterproof cover and the second waterproof cover are separately provided.
PCT/JP2012/000112 2011-01-31 2012-01-11 Intraoral imaging system for dentistry WO2012105159A1 (en)

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