JP2000139903A - Panorama radiographic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the contact with another radiographic device in an X-ray- proof room by setting and storing a retreat position kept in no contact with the other radiographic device, and instructing a rotary arm to move to the retreat position with a retreat switch when a panorama radiographic device is not used. SOLUTION: A rotary arm 3 is rotated, the center line of rotation of the rotary arm 3 is moved to a proper horizontal position, and the rotary arm 3 is moved to a proper vertical position. The X-ray generator 21 of a dental radiographic device 20 is moved in a movable range and is confirmed to be kept in no contact with the rotary arm 3. A memory switch is operated to store the position of the rotary arm 3 at this time in an EEPROM as a retreat position. A central control device calls out the retreat position stored in the EEPROM, the rotary arm 3 is moved to the retreat position for retreat, the rotary arm 3 is locked at the retreat position not to be moved, and a power supply is automatically cut off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a panoramic X-ray apparatus provided in an X-ray protection room together with another X-ray apparatus.

[0002]

2. Description of the Related Art A panoramic X-ray apparatus is shown in FIG.
As shown in (b), the X-ray generator 101 and the X-ray receiver 1
02 with the support arm 10 facing the support arm 10
4 is mounted so as to be able to ascend and descend vertically and to be rotatable along the tooth row. A tooth row as an object is fixed near the rotation center of the rotary arm 103, and
The X-ray generator 101 irradiates the subject with X-rays while rotating it, and projects the X-ray projected image on the X-ray receiver 10.
2 to obtain a panoramic X-ray image of the dentition,
It is used for dental treatment.

[0003] In the panoramic X-ray imaging apparatus 110, conventionally, when a subject is moved in and out of a fixed position near the center of rotation of the turning arm 103 for imaging,
The swivel arm 103 and the X-ray receiver 1 are disposed opposite to both ends of the swivel arm 103 so that the X-ray generator 101 and the X-ray receiver 102 projecting downward do not interfere.
Numerous proposals have been made such that a turning angle such as 02 or the vertical position can be set as a standby position.

The turning angle position of the turning arm 103 within the circle of the end position B in FIG. 6A is an example, and the object fixing position of the panoramic X-ray photographing apparatus 110 from the entrance 31 of the X-ray protection room 30 is shown. It is a convenient position for the subject to enter and exit from. This is the swing arm 10
No. 3 utilizes the fact that it can be turned. Also, since the swing arm 103 can be moved up and down,
A method of further moving up from the position shown in the figure has also been proposed.

[0007] On the other hand, as shown in FIG. 6, a panoramic X-ray imaging apparatus 110 is installed in an ordinary dental clinic or the like in an X-ray prevention room 30 in a limited space, in another X-ray imaging apparatus, in particular, in a dental office. It is often installed together with the X-ray imaging apparatus 20, and in this case, the panorama X that is not often used is often used.
Arm 103 at the end position B of the radiographing device 110
In some cases, the X-ray generator 101 may interfere with the operation of other X-ray imaging apparatuses 20.

For example, in the dental X-ray imaging apparatus 20 provided in the X-ray prevention room 30, when the subject is seated on the seat plate 23 and the dental X-ray imaging of the dentition is performed, the height of the column 24 is adjusted. By adjusting the X-ray generator 21 provided at the tip of the arm 22 having the horizontal joint extending from the support 24,
Although it can be moved in the operation range C shown in the figure, in this case, a contact range D that can come into contact with the turning arm 103 of the panoramic X-ray imaging apparatus 110 at the end position B is formed.

Therefore, during operation, the X-ray generator 21 of the dental X-ray imaging apparatus 20 may inadvertently come into contact with the turning arm 103 or the like of the panoramic X-ray imaging apparatus 110 to damage both devices. There was something to do.

[0008]

SUMMARY OF THE INVENTION The present invention is a conventional panoramic X-ray apparatus which has been developed in view of such circumstances. It is another object of the present invention to provide a panoramic X-ray imaging apparatus capable of avoiding contact with another X-ray imaging apparatus in an X-ray protection room by further utilizing the possibility that the X-ray imaging apparatus can be used.

[0009]

According to a first aspect of the present invention, there is provided a panoramic X-ray imaging apparatus in which a swivel arm having an X-ray generator and an X-ray receiver opposed to each other can be moved up and down with respect to a column. Panorama X that can be swiveled along with the teeth
In the X-ray imaging apparatus, this panoramic X-ray imaging apparatus
When the panoramic X-ray imaging apparatus is used together with another X-ray imaging apparatus in the X-ray room, when the panoramic X-ray imaging apparatus is not in use, the panoramic X-ray imaging apparatus may come into contact with the X-ray imaging apparatus. Evacuation position setting means for setting no evacuation position, storage means for storing the evacuation position, driving means for moving the swivel arm to the stored evacuation position, and moving the swivel arm to the stored evacuation position And an evacuation switch for instructing the operation.

Here, the X-ray receiver broadly means means capable of generating an X-ray projection image transmitted through a subject, and includes an X-ray TFT (Thin Film Transistor) sensor, an X-ray MOS (Metal Metal). Oxide Semiconductor) sensor, X-ray II (Image Intensifier) camera, X-ray amorphous selenium sensor, X-ray CCD (Charge Coupled D)
evice) sensor, X-ray CCD sensor with amplifier (XIC)
CD) and other two-dimensional X-ray image sensors.
This includes those using a line film.

This panoramic X-ray imaging apparatus utilizes a conventional swinging means and a vertical moving means of a swing arm as a retracting position setting means, and uses another X-ray imaging apparatus in an X-ray room. Then, the turning arm is turned and moved up and down to a position where it does not come into contact with the X-ray imaging apparatus,
By setting the retreat position, storing the retreat position in the storage means, and operating the retreat switch after the photographing is completed, the above-mentioned conventional turning means and up-and-down moving means are further utilized as driving means for driving the turning arm to the retreat position. Thus, the turning arm can be moved to the stored retracted position.

Therefore, it is possible to avoid contact with another X-ray imaging apparatus, so that operation of the other apparatus is not hindered and that the apparatus is not damaged. According to a second aspect of the present invention, in the panoramic X-ray imaging apparatus according to the first aspect, when the retreat switch is operated, the driving means moves the turning arm in a horizontal plane area and / or a vertical plane area. Then, it is moved to the stored evacuation position.

In this panoramic X-ray imaging apparatus, when the evacuation switch is operated, the turning arm is moved in the horizontal plane by the conventional turning means or the like, in other words, the horizontal plane moving means, or the conventional vertical moving means, In other words, the turning arm is moved in the vertical plane area by the vertical plane moving means, or the turning arm is moved between the horizontal plane area and the vertical plane area by using both the horizontal plane moving means and the vertical plane moving means. Then, it is moved to the stored evacuation position.

Therefore, an optimal movement mode can be selected according to the positional relationship between the two devices that may come into contact with each other and the respective operation modes.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIGS. 1A and 1B illustrate a retreat position of an example of a panoramic X-ray imaging apparatus according to the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a front view. In FIG.
Since the X-ray room and the dental X-ray imaging apparatus are the same as those described in the related art with reference to FIG. 6, the same reference numerals are given and the duplicated explanation is omitted.

As shown in FIG. 1, this panoramic X-ray apparatus 10 is installed in an X-ray protection room 30 together with a dental X-ray apparatus 20, which is another X-ray apparatus. Here, as an example of another X-ray imaging apparatus, a dental X-ray imaging apparatus that is commonly used in general is taken up, but is not limited to this. Panoramic X-ray equipment 1
Reference numeral 0 denotes a structure in which a swivel arm 3 provided with an X-ray generator 1 and an X-ray receiver 2 facing each other is supported on a column 4 so as to be able to move up and down. A more detailed description will be given later.

The features of this panoramic X-ray imaging apparatus 10 are as follows.
After the X-ray imaging is completed, by a predetermined operation as described later,
The swing arm 3 automatically moves to a retracted position indicated by A in the figure. In this way, from the operation range C of the dental X-ray imaging apparatus 20 which is another X-ray imaging apparatus, the turning arm 3 is at a remote position, and the dental X-ray
The X-ray generator 21 of the X-ray imaging apparatus 20 does not come into contact with the swivel arm 3, does not hinder the operation of the dental X-ray imaging apparatus 20, and does not damage both devices. .

FIG. 2 is an external perspective view of an embodiment of the present invention. Hereinafter, the parts already described are denoted by the same reference numerals, and redundant description will be omitted. In the figure, reference numeral 2a denotes an operation panel provided on the side of the turning arm 3 opposite to the portion where the X-ray receiver 2 is installed, the details of which will be described later. Reference numeral 3a denotes a vertically movable arm that is supported by the column 4 so as to be able to move up and down, and that supports the swing arm 3 so that it can swing. The vertically moving arm 3a is installed on an upper portion of an engaging portion 3b which slides up and down on the support column 4, and the engaging portion 3b
A lower arm 3c is provided at the lower part of the arm 3c so as to extend forward of the column 4 and below the vertically moving arm 3a.

The lower arm 3c is located above the chest when the subject O is at a fixed position for radiography between the X-ray generator 1 and the X-ray receiver 2, A pair of handles 3d for gripping the subject O with both hands for position setting extend from a front lower surface of the lower arm 3c, and a chin rest 3 on which a jaw of the subject is placed is located at the upper front.
e and a pair of ear rods 3f that define the forward tilt position and the left-right turning position of the head of the subject by the ears of the subject.

The column 4 is firmly erected on the base 4a, but may be mounted on the wall surface of the X-ray protection room 30. The vertically moving arm 3a includes a swing means for the swing arm 3, which will be described later, a means for moving the swing center in the X-axis direction,
The Y-axis direction moving means is built in, and the column 4 has a built-in vertical moving means for the vertical moving arm 3a.

FIG. 3 is a block diagram showing a main part of an embodiment of the present invention. With reference to this block diagram, devices related to the retraction of the turning arm 3 of the panoramic X-ray imaging apparatus 10 will be described. The reference numeral 5a utilizes the conventional turning means of the turning arm 3 as the turning means 5a for setting the retreat position of the turning arm 3, and further stores the information when the evacuation switch 8 described later is operated. Turning means 7a for driving the turning arm 3 to turn to the turning angle of the retracted position.
Also used as

Reference numeral 5b is a device utilizing the X-axis direction moving means of the center of rotation of the swing arm 3 conventionally provided as the X-axis direction moving means 5b for setting the retracted position of the swing arm 3. When an evacuation switch 8 described later is operated, the evacuation switch 8 is also used as an X-axis direction moving means 7b for moving the turning arm 3 to the stored evacuation position. 5c
The present invention utilizes a conventionally provided Y-axis direction moving means of the rotation center of the swing arm 3 as a Y-axis direction moving means 5c for setting the retreat position of the swing arm 3, and further employs an evacuation switch described later. When the operation of the rotary arm 8 is performed, it is also used as the Y-axis direction moving means 7c for moving the turning arm 3 to the stored retracted position.

The turning means 5a, the X-axis direction moving means 5b, and the Y-axis direction moving means 5c constitute horizontal plane area moving means 5d for setting the retreat position of the turning arm 3.
When the retreat switch 8 is operated by the revolving means 7a, the X-axis direction moving means 7b, and the Y-axis direction moving means 7c, the horizontal plane area moving means 7d for moving the revolving arm 3 to the stored retreat position. Is composed.

Reference numeral 5e denotes a vertically (Z-axis) moving means 5e for setting the retracted position of the swing arm 3, which is provided by using the vertically (Z-axis) moving means of the swing arm 3 which is conventionally provided. Further, when the evacuation switch 8 described later is operated, the swing arm 3 is moved to the stored evacuation position.
Is also used as a vertical (Z-axis) direction moving means 7e for moving. Note that, here, this vertical moving means is also referred to as vertical plane area moving means.

The horizontal plane area moving means 5d and the vertical (Z
The retreat position setting means 5 for setting the revolving arm 3 to the retreat position is constituted by the (axial) direction, that is, the vertical plane area moving means 5e. Also, the horizontal plane moving means 7d and the vertical (Z
When the evacuation switch 8 is operated in the (axis) direction, that is, the vertical plane area moving means 7e, the driving means 7 moves the revolving arm 3 to the stored evacuation position.

Reference numeral 6 denotes storage means for storing data necessary for controlling the panoramic X-ray imaging apparatus 10;
The ROM 6a stores and holds fixed data, and the EEPROM 6b stores and holds electrically variable data. Here, the EEPROM is an electrical
ly Erasable Programmable ROM is a ROM that can electrically erase and write specific data any number of times.

The operation panel 2a has a turning switch 5aa for operating the turning means 5a, and a turning angle display window 5ab for displaying the turning angle of the turning arm 3, and X, Y, and Z axis moving means. X, Y, Z axis switches 5ba, 5ca, 5ea, and X, Y position display windows 5bb, 5c for displaying the X, Y position of the rotation center of the swing arm 3.
b, a vertical position display window 5eb for displaying the vertical position of the swing arm 3 is provided.

The retreat position of the turning arm 3 set by the retreat position setting means 5 is stored in the EEPROM 6 of the storage means 6.
A storage switch 6c for storing the data in the M6b and a retract switch 8 for moving the turning arm 3 by the driving means 7 are provided at the stored retracted position. The evacuation switch 8 and the like may be provided individually, or the already provided X-ray imaging preparation switch or the like may be operated in a manner different from the usual manner, for example, by holding a predetermined number of seconds or more. Therefore, it may be replaced.

The operation panel 2a actually displays X
Other operation switches required for operating the panoramic X-ray imaging device, such as a radiation irradiation switch, a power switch, and a numeric keypad,
Although other display windows are provided, they are omitted here. Reference numeral 9 denotes a central control unit (CPU) that controls the entire apparatus 10, and includes the operation panel 2a, the horizontal plane area moving unit 5d, and the vertical (Z-axis) direction, that is, the vertical plane area moving unit 5e. The retreat position setting means 5, the storage means 6, the horizontal plane area moving means 7d and the driving means 7 composed of the vertical (Z-axis) direction, that is, the vertical plane area moving means 7e, are connected and controlled. Hereinafter, an operation procedure for retracting the swivel arm in the above-described panoramic X-ray imaging apparatus will be described with reference to the accompanying drawings.

FIG. 4 is a flowchart showing an example of a procedure for setting a retracted position in the panoramic X-ray imaging apparatus of the present invention. In order to retract the swing arm, it is necessary to first set its retracted position. This is the evacuation position
This is because the desired evacuation position differs depending on the type, operation mode, installation position, and the like of another X-ray imaging apparatus installed together with the panoramic X-ray imaging apparatus in the X-ray prevention room. Therefore, it is necessary to set the evacuation position when newly installing the related equipment or when the installation is changed.

First, the panoramic X-ray apparatus 10 is set to a serviceman mode by a predetermined operation (S1).
The serviceman mode is a mode that can be used by an installation technician of the device 10, and a predetermined operation for setting this mode is not known to a general operator of the device 10. ing. This is to prevent the setting from being changed unintentionally and the contact of the device from occurring.
However, setting this mode is for safety and is not essential.

Next, the swing switch 5ab, the X and Y axis switches 5ba and 5ca (FIG. 3) are operated, and the swing arm 3 is turned on.
Is turned to an appropriate turning angle, the center of rotation of the turning arm 3 is moved to an appropriate horizontal position (S2), and the Z-axis switch 5 is turned on.
By operating ea, the turning arm 3 is moved to an appropriate vertical position (S3). After this move, other equipment, here,
The X-ray generator 21 (FIG. 1) of the dental X-ray apparatus 20 is moved within a movable range (S4), and it is confirmed whether or not the X-ray generator 21 comes into contact with the swing arm 3 (S5). Here, if there is a contact, S2 to S5 are repeated, and if it is confirmed that there is no contact, the storage switch 6c is operated, and the position of the turning arm 3 at that time is set as the retreat position, and the EEPROM of the storage means 6 is stored.
The OM 6b is stored and held, and the evacuation position setting ends.

When the retreat position is set as described above,
It is possible to reliably set a retreat position where contact with other devices can be avoided. FIG. 5 shows the panorama X of the present invention.
It is a flowchart which shows an example of the procedure of retreat of a turning arm in a radiography apparatus. Check if the shooting is completed (S
11) When the evacuation switch (S12) is operated, the central control unit 9 (FIG. 3) causes the EEPROM of the storage unit 6 to be operated.
The evacuation position stored and held in 6b is called, and the horizontal surface area moving means 7d is driven so as to become the evacuation position,
The revolving arm 3 retreats in the horizontal plane area (S13), the vertical plane area moving means 7e is driven, and the revolving arm 3 retreats in the vertical plane area.

Then, the swing arm 3 is locked so as not to move at the retracted position, the power supply is automatically shut off, and the retracting of the swing arm is completed. Thus, after the photographing is completed, the swivel arm automatically moves to the retreat position only by one-touch operation of the retreat switch, and the power supply of the apparatus is shut off. Note that the automatic power-off is not an essential configuration,
Alternatively, the power switch may be turned off.

Further, both the horizontal plane area moving means 7d and the vertical plane area moving means 7e are not necessarily driven, and depending on the case, only one of them may be driven. Also, here, an example is described in which the X and Y axis moving means 5b (7b) and 5c (7c) of the rotation center of the turning arm 3 are provided as the horizontal plane area moving means in addition to the turning means 5a (7a). The X and Y axis moving means 5b (7b) and 5c (7c) are not essential.

Further, the retreat position setting means can be replaced by manually moving and turning if the turning arm can be turned manually or when turning can be performed.

[0037]

According to the first aspect of the present invention, the panoramic X-ray imaging apparatus has a retreat position setting means for the turning arm and a storage means for storing the retreat position. Since the swivel arm can be moved to the stored retracted position, contact with other X-ray imaging devices can be avoided, and operation of other devices is not hindered. There is no damage.

According to the panoramic X-ray imaging apparatus of the second aspect, in addition to the effect of the panoramic X-ray imaging apparatus of the first aspect, the driving means operates when the retract switch is operated. The swivel arm in a horizontal area or /
And, in the vertical plane area, since it is moved to the stored evacuation position, the positional relationship between the two devices that may come into contact with each other,
An optimal movement mode can be selected according to each operation mode.

[Brief description of the drawings]

FIGS. 1A and 1B illustrate a retreat position of an example of a panoramic X-ray imaging apparatus according to the present invention, wherein FIG. 1A is a plan view and FIG.

FIG. 2 is an external perspective view of an embodiment of the present invention.

FIG. 3 is a block diagram of a main part configuration of an embodiment of the present invention.

FIG. 4 is a flowchart illustrating an example of a procedure for setting a retracted position in the panoramic X-ray imaging apparatus according to the present invention.

FIG. 5 is a flowchart showing an example of a procedure for retracting a turning arm in the panoramic X-ray imaging apparatus of the present invention.

6A and 6B are views for explaining a contact area between a conventional panoramic X-ray imaging apparatus and another X-ray imaging apparatus, wherein FIG. 6A is a plan view and FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 X-ray generator 2 X-ray receiver 3 Revolving arm 4 Column 5 Retreat position setting means 6 Storage means 7 Driving means 7 d Horizontal plane area moving means 7 e Vertical plane area moving means 8 Evacuation switch 9 Central control unit (CPU) 10 Panorama X X-ray imaging apparatus 20 Other X-ray imaging apparatus 30 X-ray prevention room A Retreat position B End position C Operating range of other equipment D Contact range

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shigeki Suzuki 680 Higashihama-machi, Fushimi-ku, Kyoto-shi, Kyoto F-term in Morita Manufacturing Co., Ltd. (reference) 2H013 AA25 4C093 AA12 AA30 CA38 DA05 EB02 EB04 EB13 EB17 EC02 EC15 EC21 EC28 ED11 EE02 EE11 FA11 FA13 FA42

Claims (2)

[Claims] 1. A panoramic X-ray imaging system in which a swivel arm having an X-ray generator and an X-ray receiver opposed to each other is mounted so as to be able to move up and down with respect to a column and to be able to turn along a tooth row. When the panoramic X-ray imaging apparatus is used together with another X-ray imaging apparatus in an X-ray-proof room, the panoramic X-ray imaging apparatus uses the other X-ray imaging apparatus when not in use. Evacuation position setting means for setting an evacuation position that does not come into contact with the X-ray imaging apparatus at the time;
Storage means for storing the evacuation position, driving means for moving the swivel arm to the stored evacuation position, and evacuation switch for instructing to move the swivel arm to the stored evacuation position. Characteristic panoramic X-ray imaging device. 2. The driving device according to claim 1, wherein the driving means moves the turning arm in a horizontal plane area when the retraction switch is operated.
A panoramic X-ray apparatus, wherein the panoramic X-ray apparatus is moved to the stored evacuation position in a vertical plane area.