JPH0415208Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a temporomandibular joint radiography device, and more specifically, it is a temporomandibular joint radiography device that can always maintain the same imaging position during X-ray imaging of the temporomandibular joint. It is related to the device.

[Conventional technology]

When performing treatment or orthodontics, X-ray fluoroscopic photography is performed in order to know in advance the direction of tooth growth and the position of the temporomandibular joint.

In this case, images are taken by placing a dry plate on one of the patient's jaws and placing an X-ray irradiator on the other side of the jaw, so not only is the patient's imaging position different each time, but the left and right temporomandibular joints overlap. The disadvantage was that it was hard to see because it was blurred.

[Purpose of invention]

This invention aims to eliminate the above-mentioned drawbacks of the prior art.

[Summary of the idea]

In order to achieve the above-mentioned object, this device has an opening on the side, a head positioning member on the front side, and a cassette insertion shelf on the back side for inserting the film cassette from the side opening. Part mounting member;
irradiation for positioning between an X-ray irradiator and the head-mounted member; The present invention provides a temporomandibular joint radiographing device characterized by comprising a positioning member.

[Structure of the embodiment of the invention]

The temporomandibular joint radiography device of this invention is shown in Figures 1 to 4.
As shown in the figure, line of sight reference lines 2a and 2b are printed or engraved on the front side of a rectangular plate-like member 1 made of an X-ray transparent material, and intersect at approximately the center of the member, and near the cross section. A spindle 3 made of X-ray transparent plastic or hard rubber for insertion into the ear canal is attached.

Also, on the right side of the plate-shaped member 1 are the figures 3 and 4.
As shown in the figure, the fan-shaped side plates 4 are connected and the side plates 4 are
An arc-shaped back plate 6 is connected to the arc side of the plate member 1, and a bottom plate 5 whose width is narrower than that of the plate member 1 by the thickness of the plate.
A sector-shaped fixed side plate 4A is connected to the right side thereof, and an arc-shaped back plate 6A is connected to the arcuate side of the side plate 4A.
A plate member 1 and a bottom plate 5 are pivotally supported at one end by a hinge mechanism 7. Furthermore, the threaded rods 9, 9 attached to the back plate 6A are made to protrude from the arc-shaped elongated holes 8, 8 drilled in the back plate 6, and the butterfly nuts 10, 10 are screwed into each of these threaded rods 9, 9. , the inclination angle of the plate member 1 can be adjusted in three steps, for example, using scales 11, 11 provided along the elongated holes 8, 8 as a guide. Further, a wide U-shaped film cassette insertion shelf 12 is attached to the back surface of the plate member 1, and a light shielding plate 13 made of lead or the like is attached to the rear back surface of the plate member 1. Furthermore, a positioning pole 16 having a positioning member 16A for the X-ray irradiator 15 is protruded from approximately the center of the fixed side plate 4A via a pole support pipe 14. Note that 17 is the well-known X
It is a line film cassette.

[Effect of invention]

The temporomandibular joint radiographing device of this invention is constructed as described above, and in its use, as shown in FIGS. 1 and 2, when placing the head a on the plate-like member 1, The patient inserts the spindle 3 into the ear canal on the side that is in contact with the plate-shaped member, and the line of sight reference line 2a provided on the plate-shaped member 1 is visible with the right eye in the embodiment but is not visible with the left eye, that is, facing directly to the side. When the film cassette 17 is inserted into the film cassette insertion shelf 12 and the X-ray irradiator 15 is lowered to the position regulated by the irradiation positioning member 16A, irradiation is performed, the right jaw and left temporomandibular joints are exposed by the inclination of the plate member 1. Because the position is shifted, heavy imaging of the left and right temporomandibular joints can be avoided.

As shown in Figures 1 and 2, the X of the right temporomandibular joint
When the ray irradiation is finished, pull out the film cassette 17 with only half exposed through the light shielding plate 13, reverse the insertion direction, and insert it again into the film cassette insertion shelf 12. After the head a is placed on the plate member 1 in the same manner as described above, the left jaw is irradiated with X-rays.

If the face width is wide or narrow, change the inclination angle of the plate member 1 to the butterfly nut 1 as shown in Fig. 5.
By turning the dials 0 and 10 and changing the scale in, for example, three ways using the scale line 11 as a guide, it is possible to avoid double imaging of the left and right temporomandibular joints.

[Effect of idea]

As described above, this invention has an opening on the side, a head positioning member on the front side, and a cassette insertion shelf on the back side into which the film cassette is inserted through the side opening. positioning between the member, a support section that holds the member together with the film cassette insertion base at an arbitrary oblique angle via a hinge mechanism and a lock member, an X-ray irradiator, and the head rest member. Since the X-ray irradiation condition for the patient is always accurate, the inclination angle of the head can be changed so that the positions of both left and right temporomandibular joints are shifted, allowing for multiple imaging of both temporomandibular joints. The present invention has the following effects: an X-ray photograph of the temporomandibular joint that can be avoided and easily identified can be easily taken, the configuration is simple and easy to handle, and it does not cause pain to the patient.

[Brief explanation of drawings]

All figures show examples of this invention.
Figure 1 is a sectional view of an example of the use of the temporomandibular joint radiography device, Figure 2
3 is an exploded perspective view, FIG. 4 is a rear perspective view of this device, and FIG. 5 is a sectional view in a different state from FIG. 1. 1... Plate member, 2a, 2a... Eye line reference line,
3...Spindle (head positioning member), 4, 4
A...Side plate, 5...Bottom plate, 6,6A...Back plate,
7... Hinge mechanism, 8... Arc-shaped long hole, 9... Threaded rod, 10... Butterfly nut (lock member),
12... Film cassette insertion shelf, 13... Diagonal plate, 15... X-ray irradiator, 16A... Positioning member.

Claims (1)

[Claims for Utility Model Registration] An opening on the side, a head positioning member provided approximately in the center of the front side, and a cassette insertion shelf provided on the back side into which a film cassette is inserted through the side opening. a head rest member; a support part for holding the head rest member together with the film cassette insertion shelf at an arbitrary inclination angle via a hinge mechanism and a lock member; A temporomandibular joint characterized by comprising: a positioning pole that is fixed to a side surface and has a positioning member that serves as a positioning standard for the X-ray irradiator and extends above the head-rest positioning member in the head-rest member; Transmission device.