JP3011279B2 - Dental panoramic radiography device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental panoramic radiography apparatus.

[0002]

2. Description of the Related Art Conventionally, in a dental panoramic X-ray imaging apparatus, an operation switch on an operation panel is operated to perform a preparation operation for imaging, and thereafter, an X-ray imaging switch outside an X-ray room is repeatedly produced. The operator must perform the X-ray imaging operation while checking the patient's condition from outside the X-ray room, so the X-ray imaging switch is of a deadman type so that it can be easily operated with one hand to prevent operational mistakes. It is a hand switch. If the preparation state of each part for imaging is not completed when performing the conventional X-ray imaging operation,
The user has to manually set to the ready state or press the reset switch to set to the ready state. In some cases, if the preparation is not completed, an error is displayed to prevent erroneous photographing.

In the conventional panoramic X-ray imaging control apparatus, when the reset switch 23 is pressed as shown in FIG. 4, the signal is input to the set terminal of the flip-flop circuit 27,
The output Q rises and the photographing preparation control circuit 30 is driven. This output is ready for shooting, and is held and output until the detection signal of the shooting ready detection switch 24 is input to the reset terminal of the flip-flop circuit 27. The detection signal of the imaging preparation completion detection switch 24 is also input to the set terminal of the flip-flop circuit 28, the output of the flip-flop circuit 28 is started, and the detection signal of the X-ray imaging completion detection switch 25 is input to the reset terminal. Held until When the X-ray imaging switch 26 is pressed in this state, the AND circuit 29 drives the X-ray imaging control circuit 31 only while the X-ray imaging switch 26 is being pressed.
When the imaging is completed, the output of the AND circuit 29 is inverted, and the X-ray imaging control circuit 31 is stopped.

[0004]

However, in the conventional medical panoramic X-ray imaging apparatus, when the apparatus is not ready for imaging, it is necessary to confirm that it has not been set each time and reset it, or to reset the reset switch 23. It had to be pushed, which caused the patient to wait or cause a false photo. Further, even when the reset switch 23 is outside the X-ray room, in order to perform the reset operation, one end must be released from the patient to perform the KEY operation on the operation panel.

The present invention has been devised in order to eliminate troublesome operations in the above-mentioned conventional medical panoramic X-ray imaging apparatus. It is an object of the present invention to provide a medical panoramic X-ray apparatus capable of taking care of only safety and performing more secure and reliable imaging.

[0006]

According to the first aspect of the present invention, there is provided a dental panoramic X-ray apparatus, comprising:
Even if each part of the apparatus is at an arbitrary position, by continuously pressing the X-ray imaging switch, the apparatus is automatically set to the imaging ready state, and the X-ray imaging is started immediately after the completion of the imaging preparation. This is a dental panoramic X-ray imaging apparatus characterized in that:

According to a second aspect of the present invention, when the X-ray imaging switch has not been completed, the X-ray imaging switch is pressed once to automatically start the setting of the imaging-ready state. The dental panoramic X-ray imaging apparatus is characterized in that X-ray imaging is started continuously immediately after completion of the imaging preparation by continuously pressing.

The invention according to claim 3 is characterized in that the radiographic switch is mounted outside the X-ray room and has a remote operation function, and the panoramic dental X-ray according to claim 1 or 2, is provided. It is a line imaging device. In the present invention, the X-ray imaging switch is provided with a reset function for automatically setting an imaging preparation state, and when the preparation is not completed, the reset function operates with priority.

[0009]

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an X-ray imaging control device according to a first embodiment of the present invention. Reference numeral 1 denotes an operation unit, which includes a keyboard, various operation switches, a reset switch for setting a shooting preparation state, and the like. 2 is an input / output interface unit (1/0), 3 is a CPU (central processing unit), 4 is a ROM for storing various programs and data, and 5 is an RA for temporarily storing data and the like.
M and 7 are transmission lines for address, data and control. 8
Is coupled to the X-ray imaging apparatus 9, is an imaging condition detector for detecting whether or not the apparatus is operating according to the set conditions, 10 is a control circuit for setting imaging conditions,
11, 14, and 17 are control circuits for controlling the rotation of the X-ray head, the feeding of the film, the feeding of the chin rest for determining the jaw position, and the like for forming a tomographic tomographic area.
And 18 are driving sources composed of motors and the like, 13, 16 and 1
Reference numeral 9 denotes a position detector for detecting each position, and reference numeral 22 denotes a remote unit installed outside the X-ray room, which comprises an X-ray imaging switch 21 and a display 20 for displaying tube voltage, imaging time and the like. The display 6 is the same as the display 20 and the operation device 1
It is prepared for.

Next, the operation will be described with reference to FIGS. FIG. 2 is a schematic side view showing the configuration of the medical panoramic X-ray imaging apparatus of the present invention. The patient is introduced after the swivel arm 24 and the film holder 25 are moved by the operating device 1 in advance so as not to disturb the introduction of the patient, and the patient's dentition is optimally positioned on the trajectory of the tomographic region of the imaging device main body 23. The operating device 1 is operated by aligning the patient with the positioning beam 29 emitted from the device so as to fit, and the X-ray apparatus main body 23 is moved up and down along the column 30 to adjust the height of the patient's chin. The chin rest 28 on which the chin rests is moved by the chin rest control circuit 17 and the chin rest drive source 18 to adjust the position of the front teeth. Thereafter, the head holder 3 incorporating the imaging condition detector 8 to set a tube voltage suitable for the patient.
In step 1, the patient's head is held down, the head thickness is detected, and the imaging condition control circuit 10 automatically sets the tube voltage. The operator sets the film cassette 26 in the film holder 25, goes out of the X-ray room, and presses the X-ray imaging switch 21 while checking the state of the patient through the lead glass.

When the operator keeps pressing the X-ray imaging switch 21, the CPU 3 checks whether the X-ray imaging is possible or not, the imaging condition detector 8, the arm position detector 13, and the film position detector 1.
6 is checked, and if the state is not possible, the arm drive source 12 and the film drive source 15 are controlled and driven until a photographing preparation state is reached. In this state the CPU
3 again checks whether or not X-ray imaging is possible, confirms that the X-ray imaging switch 21 is pressed, and performs a series of X-ray tomography operations. The deadman method is used so that when the operator releases the X-ray imaging switch 21 during X-ray imaging, the X-ray stops immediately.

When the CPU 3 checks the photographing completion state, the photographing is completed, and the patient leaves the X-ray room after moving the swivel arm 24 and the film holder 25 so that the patient can easily come out. The operator takes out the film cassette 26 and performs a developing process. As described above, the operator can automatically perform imaging simply by pressing the X-ray imaging switch 21. When the X-ray imaging switch 21 is pressed and released once when the preparation operation for X-ray imaging is not completed, the preparation operation is performed, and the apparatus stands by in a state where the preparation is completed. In this case, then X
Normal X-ray imaging is performed by keeping the X-ray imaging switch 21 pressed.

[0013]

[Embodiment 2] The embodiment in which the control is performed by the CPU 3 has been described above. Next, an embodiment in which the operation circuit of the present invention is represented by a logic circuit will be described. FIG. 3 is an explanatory diagram showing the operation circuit of the panoramic X-ray control device of the present invention by a logic circuit. In the figure, reference numeral 33 denotes a radiography preparation completion detection switch for detecting and transmitting completion of radiography preparation, 32 denotes an X-ray radiography switch, and 34 denotes an X-ray radiography completion detection switch for detecting and transmitting completion of radiography. , 35 and 37 are flip-flop circuits whose output is inverted at the set input and whose reset input has priority.
An ND circuit 36 is a control circuit for setting an imaging preparation state, and 39 is an X-ray imaging control circuit for controlling X-ray imaging.

The embodiment shown in FIG. 3 is a circuit in which the X-ray imaging switch 32 has a reset switch function without using the reset switch 23 of the conventional panoramic X-ray imaging apparatus shown in FIG.

Therefore, in the present invention shown in FIG. 3, when the X-ray imaging switch 32 is kept pressed, the signal is input to the set terminal of the flip-flop circuit 35, the output Q rises, and the imaging preparation control circuit 36 is driven. The control circuit 3
When the devices necessary for the X-ray imaging are set at the respective imaging preparation positions via the device 6 and the imaging preparation is completed, the imaging preparation completion detection switch 33 detects this, and the detection signal is output to the flip-flop circuit 35. , The output Q of the circuit 35 is inverted, and the photographing preparation control circuit 36 is stopped.

Further, the detection signal of the detection switch 33 is also input to the set terminal of the flip-flop circuit 37 at the same time, the output Q rises, and the output and the output signal from the X-ray imaging switch 32 which are kept pressed are output. Is ANDed by the AND circuit 38 to drive the X-ray imaging control circuit 39 while the X-ray imaging switch 32 is pressed. When the X-ray imaging is completed, the X-ray imaging completion detection switch 34 detects this, the detection signal is input to the reset terminal of the flip-flop circuit 37, and the output Q is inverted.
Even if the X-ray imaging switch 32 is kept pressed by the AND circuit 38, the driving of the X-ray imaging control circuit 39 is stopped.

When the X-ray imaging switch 32 is pressed and released once, the set terminal of the flip-flop circuit 35 rises. Further, since the X-ray imaging switch 32 is released once, the input line 42 of the AND circuit 38 falls to the LOW level.
In this state, the operation is the same as that of the conventional operation circuit shown in FIG. 4, and the imaging preparation control circuit 36 is driven to set each device necessary for X-ray imaging in the imaging preparation state. Then, this is detected by the imaging preparation completion detection switch 33, and the detection signal is input to the set terminal of the flip-flop circuit 37, and the output Q of the flip-flop circuit 37 rises, so that the X-ray imaging switch 32 is pressed again. As a result, the input line 42 of the AND circuit 38 becomes High level, and drives the X-ray imaging control circuit 39 only while it is being pressed. When the imaging is completed, the output of the AND circuit 38 is inverted and the X-ray imaging control circuit 39 stops.

[0018]

As described above, according to the present invention,
By simply pressing the X-ray imaging switch, you can automatically set the camera to the imaging ready state and start shooting immediately afterwards, making it easy to operate without worrying about the preparation work for imaging. In addition, it is possible to prevent erroneous imaging and to improve the accuracy and safety of the X-ray imaging operation, which can position the patient and pay attention only to safety.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a circuit configuration of a panoramic X-ray imaging control device according to a first embodiment of the present invention.

FIG. 2 is a schematic side view illustrating a configuration of a panoramic X-ray imaging control device according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating an operation circuit of a panoramic X-ray imaging control apparatus according to a second embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an operation circuit of a conventional panoramic X-ray imaging control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operating device 2 1/0 3 CPU 4 ROM 5 RAM 6 Display 7 Bus 8 Imaging condition detector 9 X-ray imaging device 10 Imaging condition control circuit 11 Arm control circuit 12 Arm drive source 13 Arm position detector 14 Film control circuit Reference Signs List 15 film drive source 16 film position detector 17 chin rest control circuit 18 chin rest drive source 19 chin rest position detector 20 display 21 X-ray imaging switch 22 remote unit 32 X-ray imaging switch 33 X-ray imaging completion detection switch 34 X-ray imaging completion detection Switch 35 Flip-flop circuit 36 Imaging preparation control circuit 37 Flip-flop circuit 38 AND circuit 39 X-ray imaging control circuit 42 Input line

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-64-25839 (JP, A) JP-A-58-54932 (JP, A) JP-A-2-182241 (JP, A) JP-A-62 258638 (JP, A) JP-A-3-99642 (JP, A)

Claims (3)

(57) [Claims] 1. A dental panoramic X-ray apparatus, comprising:
Even if each part of the apparatus is at an arbitrary position, by continuously pressing the X-ray imaging switch, the apparatus is automatically set to the imaging ready state, and the X-ray imaging is started immediately after the completion of the imaging preparation. Dental panoramic X-ray apparatus characterized by the following. 2. When an X-ray imaging switch is pressed once when each part of the apparatus is not yet ready for imaging, setting of an imaging ready state is automatically started, and thereafter, the X-ray imaging switch is kept pressed. A dental panoramic X-ray imaging apparatus, wherein X-ray imaging is started continuously immediately after the completion of the imaging preparation. 3. The radiographic apparatus according to claim 1, wherein the radiographic switch is mounted outside the X-ray room and has a remote operation function.
Dental panoramic X-ray imaging apparatus according to 1.