JPH0242607U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing one example of the dental panoramic X-ray imaging apparatus of the present invention, and FIGS.
Figures 3, 5, 7 and 9 are explanatory diagrams of the adjustment mechanism corresponding to the same embodiment, and Figure 10 is similar to the figure.
The figure is a schematic side view showing an example of a device to which a sensing position variable means is added, FIG. 11 is an explanatory diagram of the adjustment mechanism in the same embodiment, and FIGS.
5 is a block diagram showing an example of the circuit configuration of the device of the present invention, FIG. 16 is an enlarged view of the 10th line, and 17th
Figures 21 to 21 are similar to Figure 16 of other embodiments, Figure 22 is an explanatory diagram showing another example of sensor arrangement, and Figures 23 and 24 are the principles of the sensor adopted in the present invention. Figure 25 is T. M. A diagram showing an example of a film image in J imaging, FIG. 26 is an explanatory diagram showing various patterns of X-ray irradiation angles, FIG. 27 is an enlarged view of temporomandibular joint imaging corresponding to the same diagram, and FIG. 28 is another diagram. A similar figure to FIG. 25 showing an example of a film image of a panoramic T, M. Figure 30 is an integrated block diagram of J photography. M. It is a general flowchart of positioning for J photography. (Explanation of symbols), 1... Panoramic X-ray imaging device main body, 2... Tomographic formation mechanism, 21... Horizontal rotating arm, 22... X-ray generator, 23... Film cassette, 24... Rotating drive mechanism, 3... patient holding device, 4... position detection sensor, 40... sensing position variable means, 5... drive circuit, 50
...Moving mechanism, 500... Drive means, 6... Temporomandibular joint imaging selection means, 7... X-ray irradiation control means, 8...
... Comparison calculation circuit, 80 ... Reference distance data generation circuit, P ... Fault region, T ... Dental arch.

Claims (1)

[Claims for Utility Model Registration] 1. A panoramic X-ray imaging device main body 1, a horizontal rotation arm 21 supported by the main body 1 so as to be horizontally rotatable,
An X-ray generator 22 supported at both ends of the arm 21
and a fault forming mechanism 2 including a film cassette 23
, the X-ray generator 22 and the film cassette 23
In a dental panoramic X-ray imaging device comprising a head fixation device 3 disposed between the
The radiographing device includes a position detection sensor 4 for detecting the relative position of the patient's dental arch T held in the head fixing device 3 with respect to the device main body 1, and the device main body based on position data detected by the sensor 4 and the tomographic area P. a drive circuit 5 for moving the tomographic mechanism 2 and/or the patient holding device 3 back and forth based on comparison data with relative position data with respect to 1; A temporomandibular joint imaging selection means 6 that emits a signal for moving the temporomandibular joint to an appropriate position for imaging, and an output signal from the temporomandibular joint imaging selection means 6 causes the X-ray generator 2 to
1. A dental X-ray panoramic imaging apparatus, comprising: an X-ray irradiation control means 7 for turning on and off 2 to match a predetermined mode suitable for temporomandibular joint imaging. 2. A claim in which the relative position data is compared in a comparison calculation circuit 8, and the output data from the comparison calculation circuit 8 is inputted to the drive circuit 5 to move the tomography mechanism 2 and/or the patient holding device 3 back and forth. The device according to item 1. 3. Claim 1 or 2, wherein the position detection sensor 4 comprises a sensing position variable means 40.
The device described. 4. The apparatus according to claim 2, wherein the position data of the fault area P is inputted to the comparison calculation circuit 8 by the reference distance data generation circuit 80. 5. The apparatus according to claim 1, 2 or 3, wherein the tomographic formation mechanism 2 includes a swing drive mechanism 24 that swings the horizontal swing arm 21 into a shape that follows the patient's dental arch T. 6 The sensor 4 is a non-contact type or a contact type sensor, and is arranged in any one of the device main body 1, the tomography mechanism 2, and the patient support device 3 so as to face at least the front teeth of the dental arch T. Apparatus according to claim 1, 2 or 3. 7. The driving circuit 5 is connected to a moving mechanism 50 including a driving means 500 such as a motor or a solenoid, and the moving mechanism from which the patient holding device 3 or the tomography mechanism 2 receives the output from the comparison calculation circuit 8. 4. A device according to claim 1, 2 or 3, wherein the device moves back and forth by means of a 50. 8. Claim 4, wherein the reference distance data generation circuit 80 instructs to set the reference position of the ballistic region P at a position that substantially coincides with the position of the dental arch T and/or at a position that is slightly shifted forward and backward. The device described. 9 The sensing position variable means 40 includes:
4. The device according to claim 3, wherein the vertical position of the sensor 4 is adjusted. 10. The device according to claim 3, wherein the sensing position variable means (40) adjusts the orientation angle of the sensor (4). 11. The apparatus according to claim 1, wherein the temporomandibular joint imaging selection means 6 has selection modes for various X-ray incident angles with respect to the temporomandibular joint. 12. Claim 1, wherein the X-ray irradiation control means 7 turns on and off the X-ray generator 22 according to the selected mode, and also controls the feed start/stop timing and feed speed of the film cassette 23.
Or the device according to 11.