JPH0411691Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a dental X-ray imaging device, and more specifically, it is used for expanded imaging of dentition (panoramic X-ray imaging), cranial standard X-ray imaging (so-called cephalometric imaging). ) and temporomandibular joint standard X-ray photography (abbreviated as TMJ photography).

(Conventional technology) In dental treatment, depending on the treatment content,
In order to accurately understand the condition of a patient's dentition, so-called panoramic X-ray photography that can take a cross-sectional view of the expanded dentition, cephalometric photography for orthodontics, and TMJ photography to detect temporomandibular joint diseases are appropriate. It will be done. Dentists are equipped with specialized X-ray imaging equipment corresponding to these three types of functions, and appropriate imaging diagnoses are made.

(Problems that the invention aims to solve) However, preparing all of these devices requires a large space and a large amount of money, and when performing different imaging methods on a single patient, the patient and operator Having to move each time causes considerable pain and annoyance, and the time required for the procedure is a major hindrance to smooth treatment work for the surgeon.

Recently, in order to alleviate these problems even a little, devices that combine two of the three types of functions mentioned above, namely, panoramic/cephaloscopic and cephalometric/T.
A composite device designated MJ was developed and began to be used by general dentists. However, these devices only have two limited functions, and because they are used in X-ray-proof rooms, they require less space, allowing faster and more comfortable dental treatment. From this point of view, it is still insufficient, and further improvement is desired.

The present invention has been made to eliminate the above-mentioned problems, and is intended to provide a new dental X-ray imaging apparatus that has the above three functions. In yet another embodiment, it is possible to perform four types of imaging, including dental imaging.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained based on the attached embodiment drawings. Fig. 1 is a front view showing an embodiment of the device of the present invention, Fig. 2 is a plan view of the embodiment, Fig. 3 is a side view of the embodiment, and Fig. 4 is the portion indicated by the line in Fig. 1. FIG. 5 is a front view showing another embodiment, FIG. 6 is a plan view of FIG. 5, and FIG. 7 is an enlarged view of the lined portion of FIG. That is, the gist of the dental X-ray imaging apparatus of the present invention is that it includes a panoramic head fixing device 11, a first X-ray generator 12 and a panoramic film cassette 13 that are driven to rotate horizontally around the head fixing device 11. A panoramic X-ray imaging device 1 that performs expanded imaging of a dentition, and at least a pair of earrods 31, 31 separated by a main beam 2 horizontally fixed to a support 10 of the panoramic X-ray imaging device 1. In a dental X-ray imaging device capable of taking cephalometric X-rays, which includes a cephalometric head fixing device 3, a cephalometric head fixing device 3 is provided with a cephalometric head fixing device 3 that horizontally rotates around a head fixing lever shaft 350.・Equipped with a movable arm 4 that can be expanded and contracted,
A second X-ray generator 5 is held at the tip of the movable arm 4 so as to be able to swing at least up and down, and a film cassette holder for temporomandibular joint standard X-ray photography is attached to the earrods 31, 31 of the head fixation device 3 for cephrosis. 31
1 can be attached, and the head fixation device 3 for cephrosis, the temporomandibular joint standard X-ray film cassette holder 311, and the second It is characterized by being able to perform X-ray photography. The panoramic X-ray imaging device 1 includes a first
A panoramic film cassette 13 is installed at a position opposite to the X-ray generator 12, and can be rotated around the head fixing device 11 while maintaining this opposing relationship. However, when this first X-ray generator 12 is used for cephalometric imaging to be described later, this opposing relationship is canceled so that its X-ray axis is directed toward the cephalometric head fixation device 3 side. Also,
A cephalometric film cassette is placed near the cephalometric head fixation device 3 at a position where the X-rays from the first X-ray generator 12 can pass through and irradiate the patient's head fixed to the cephalometric fixation device 3. A holder 30 is equipped. The positional relationship between the cephalic film cassette holder 30 and the first X-ray generator 12 is as follows:
The distances from the center of the patient's head fixed to the head fixing device 3 are set to be 15 cm and 150 cm, respectively.
The cephalometric head fixation device 3 is capable of intermittent axis rotation so as to orient the patient's head at an angle of, for example, 45 degrees with respect to the X-ray axis. The cephalometric head fixing device 3 includes at least a pair of earrods 31, 31, and the earrods 31, 31 are provided with a removable film cassette holder 311. Furthermore, a movable arm 4 and a second X-ray generator 5 as exemplified in the following embodiments are installed on the cephalometric head fixing device 3, and the cephalometric head fixing device 3 or a separate chair with a headrest is installed. It is said that it is possible to perform TMJ imaging and dental imaging of a patient fixed in a headrest.

(Function) The dental X-ray imaging apparatus having the above configuration has the following three functions.

It functions as a panoramic X-ray imaging device that takes expanded images of the dentition.

That is, the patient's head is fixed in the panoramic head fixing device 11, the X-ray axis of the first By rotating it along and around it, continuous tomographic photography of the dentition can be taken.

Functions as a cephalometric imaging device.

That is, in the head fixation device 3 for cephalometric imaging, which is the same as the conventional panoramic shooting machine, the patient's head is fixed in the device 3 by inserting ear rods 31, 31 into the patient's ear canal, and the first The X-ray generator 12 of the X-ray generator 12 is directed toward the head fixation device 3, and the relative positional relationship with the cephalic film cassette holder 30 is set as described above. Cephalometric photography can be performed by irradiating the area with X-rays.

Functions as a T.M.J. photography device.

That is, the patient's head is fixed to the cephalometric head fixation device 3 in the same manner as described above, the film cassette holder 311 is attached to the earrod 31 on the side of the temporomandibular joint to be photographed, and the movable arm 4 is operated and the head is swung as appropriate. Then, place the second X-ray generator 5 at a position that is, for example, 30 degrees diagonally upward on the opposite side, 30 cm away from the other side of the patient, and 15 degrees in front of the center of the patient's head when viewed from above (such a position setting). has been established as an example of a standard for TMJ imaging), and can perform X-ray imaging of the temporomandibular joint. If it is desired to photograph the temporomandibular joint on the opposite side, the movable arm 4 can be horizontally rotated, moved to the opposite side, and positioned in the same manner, thereby performing the same photographing. At this time, the thickness of the patient's head varies depending on individual differences,
Since the distance (for example, 30 cm) between the focus of the tube of the X-ray generator 5 and the position of the earrod changes, a scale 352 is provided on the head fixation device 3 and measures the thickness of the patient's head by adjusting the position of the earrod. Visually observe the
Corresponding to this scale 352, the length of the movable arms 4, 41 is adjusted by loosening the lock bolt 401 while reading the mark 411 provided on the movable arm 4, extending and contracting it, and adjusting the vertical angle about the fulcrum 50.
Tighten lock bolt 401 as soon as adjustment is completed TMJ
Take pictures.

Furthermore, in the second embodiment, it functions as a dental imaging device.

That is, the patient's head is fixed to the cephalometric head fixation device 3 or the headrest (not shown) of a chair with a separate headrest, and the second X-ray is generated by operating the movable arm 4 and swinging the head as appropriate. Set instrument 5 so that its X-ray axis points toward the tooth you want to photograph,
Furthermore, dental photography can be performed by inserting a film into the oral cavity.

(Example) Examples will be described below.

(Example 1) In FIGS. 1 to 4, a panoramic X-ray imaging apparatus 1 is supported on a column 10 so as to be movable up and down by a lift 101, and a first X-ray generator 12
A panoramic film cassette 13 is mounted on opposite ends of a head arm 102, and the head arm 102 is held by a movement unit 103 integrated with the lift 101 so as to be horizontally rotatable. Further, the first X-ray generator 12 is rotatably attached to the tip of the head arm 102, and can be oriented toward the cephalometric head fixing device 3 by releasing the opposing relationship with the panoramic film cassette 13. The panoramic head fixing device 11 of the panoramic X-ray imaging apparatus 1 is equipped with known members such as a temporal presser and a forehead presser for stably fixing the patient's head.

On the other hand, the cephalometric head fixation device 3 is separated from the panoramic X-ray imaging device 1 via the main beam 2 integrated with the lift 101 and the support arm 21 fixedly installed orthogonally to the main beam 2, Moreover, a semi-fluorescent film cassette holder 30 is attached to this support arm 21.
is attached, and the cassette holder 30, head fixing device 3, and first X-ray generator 12 are arranged so as to have the above-mentioned relative positional relationship. The cephalometric head fixation device 3 is equipped with a forehead presser 32, an occiput presser 33, a lower orbital rim indicating rod 34, etc. in addition to the earrods 31, 31 as in the conventional one, and the earrods 31, 31 are equipped with a support bar. 310, and by rotating the operating handle 35, the operating link mechanism 351 connected to the lower end of the operating handle 35 and the earrods 31, 31 can be moved forward and backward at the same time. , these allow accurate positioning of the head to a predetermined position depending on the patient. Reference numeral 352 is a scale indicating this proper position. Further, the cephalometric head fixing device 3 is rotatable around its center, and the rotation angle, for example, in 45° increments during cephalometric photography can be arbitrarily set by the stopper 36.

The movable arm 4 is capable of horizontal rotation about the shaft support 350 of the lever 35 coaxially with the rotation of the head fixing device 3 for cephalotherapy, and the arm base 40
and a movable part 41, and these fitting sliding parts 40, 41
It can be expanded and contracted in the longitudinal direction. TM
As already described in the section J. Imaging, TMJ imaging is performed by adjusting the scale by loosely tightening the lock bolt 401 to adjust the expansion and contraction of the movable arm 4, and by adjusting the vertical angle at the fulcrum 50 at the tip of the movable arm 4.

(Embodiment 2) Next, another embodiment of the present invention will be described with reference to FIGS. 5 to 7. In this other embodiment, panoramic photography,
In addition to the three functions of cephalometric photography and TMJ photography, this camera also has the additional function of performing dental X-ray photography. That is, in this other embodiment, the movable arm 4 includes a pantograph balance arm 42 in a connected state, and the balance arm 42
The links 421, 421' that make up the X-ray generator 5 can be vertically swung while keeping balance with the X-ray generator 5 by built-in springs.
The second X
The line generator 5 is set at various positions required for dental imaging.

It goes without saying that the present invention is not limited to the above embodiments, and that other changes can be made without departing from the scope of the present invention.

(Effects of the invention) As stated above, the dental X-ray imaging device of the present invention has the following advantages:
Panoramic radiography, cephalometric radiography, TMJ
Since three or four functions of photography and dental photography are possible with one device, dentists do not need to install devices for each function, and therefore equipment costs can be reduced. , and space saving for installation can be achieved. Furthermore, even if multiple imaging operations are required for the same patient, the patient does not have to move for each imaging session, which greatly reduces the pain, and the surgeon can perform the work in the same location. Because it can be done, there is no hassle and treatment work can be done more smoothly.

As described above, the dental X-ray imaging apparatus of the present invention promises X-ray imaging for more space-saving, faster, and more comfortable dental treatment, and its practicality is extremely high.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the device of the present invention;
Fig. 2 is a plan view of the same embodiment, Fig. 3 is a side view of the same embodiment, Fig. 4 is a partially cutaway enlarged view of the line in Fig. 1, and Fig. 5 is another embodiment of the device of the present invention. 6 is a plan view of FIG. 5, and FIG. 7 is an enlarged view of the lined portion of FIG. 5. Explanation of symbols, 1... Panoramic X-ray imaging device, 1
DESCRIPTION OF SYMBOLS 1...Panorama head fixation device, 12...First X-ray generator, 2...Main beam, 3...Cephalometric head fixation device, 31...Earrod, 311...Film cassette holder, 4 ...Movable arm, 5...
...Second X-ray generator.

Claims (1)

[Claims for Utility Model Registration] 1. A panoramic head fixing device 11 and a first X that horizontally rotates around the head fixing device 11.
Line generator 12 and panoramic film cassette 1
3, and at least a pair of earrods 31 separated by a main beam 2 horizontally fixed to a support 10 of the panoramic X-ray device 1. ,31
In a dental X-ray imaging device capable of taking cephalometric X-rays, which includes a cephalometric head fixing device 3, a cephalometric head fixing device 3 is provided with a cephalometric head fixing device 3 that rotates horizontally around a head fixing lever shaft 350. - A movable arm 4 is equipped to be extendable and retractable, and the movable arm 4
At least a second X is attached to the tip of the
A line generator 5 is held, and the earrods 3 of the cephalometric head fixation device 3
A film cassette holder 311 for temporomandibular joint standard X-ray photography can be attached to 1 and 31, and the cephalometric head fixing device 3 and the film cassette holder 311 for temporomandibular joint standard X-ray photography are set at predetermined positions. The second X-ray generator 5
A dental X-ray imaging device that enables temporomandibular joint standard X-ray imaging. 2 The second X-ray generator 5 is connected to the movable arm 4
Utility model registration claim No. 1, which is held so as to be able to swing up and down by a balance arm 42 consisting of links 421 and 421' provided at the tip side, and to be able to swing left and right at the tip of the balance arm 42. The dental X-ray imaging device according to item 1.