JPH01242039A - Top plate for supporting examinee - Google Patents

Abstract

PURPOSE:To prevent the generation of warpage by eliminating a defect appearing as an X-ray image, by bonding decorative boards impregnated with a melamine resin to both surfaces of a medium quality fiberboard formed by solidifying a wooden fiber by a resin. CONSTITUTION:A medium quality fiberboard 10 having specific gravity of 06-0.65 formed by solidifying a wooden fiber obtained from a lauan needle-leaf tree by a resin is used and decorative boards 11a, 11b impregnated with a melamine resin are bonded to both surfaces of said medium quality fiberboard under pressure to constitute a top plate 12 for supporting an examinee. Since the medium quality fiberboard 10 constituting the principal part of this top plate is formed by solidifying the wooden fiber by the resin, there is no defect appearing as an X-ray image.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a top plate for supporting a subject that is installed in an X-ray imaging apparatus and supports a subject and through which X-rays are transmitted. .

(Conventional technology) This type of X-ray imaging device and a top plate for supporting a subject.

will be explained with reference to FIGS. 4 and 5. FIG. 4 shows an under-table type X-ray fluoroscopic imaging apparatus, in which a top plate 2 is placed on the upper part of an upright bed section 1, and a subject P is placed on this top plate 2.

Further, an X-ray source 3 is arranged inside the upright bed section 1, and a spot shot device is placed above the subject P.

A fluoroscopic imaging system 4 such as a TV camera system is arranged. In this configuration, the top plate 2 supports the subject P and is exposed to the X-rays from the X-ray source 3, allowing the X-rays to pass therethrough.
Using the X-rays that have passed through the subject P, the fluoroscopic imaging system 4 can perform fluoroscopy or imaging.

5(a) and 5(b) show the direct photographing table device, FIG. 5(a) is a front view, and FIG. 5(b) is a direct view.
) is a plan view seen in the AA direction.

That is, the top plate 6 is placed on the top of the bed frame 5,
The subject P is placed on this top plate 6. Also,
An X-ray film 7 is arranged inside the bed frame 5, and an X-ray film 7 is placed above the patient P! A8 is placed. In this configuration, the top plate 6 supports the subject P and transmits X-rays irradiated from the X-ray source 8, and the X-rays transmitted through the subject P cause the X-ray film 7 to pass through the top plate 6. You will be able to take pictures at

Hereinafter, the above-mentioned top plate 6 (or 2) will be explained in detail with reference to FIGS. 6 to 8. That is, as shown in FIG. 6, the top plate 6 is constructed by adhering a decorative board 6b to one side of a multi-layered plywood board 6a, and then applying a resin coating thereon to form a coating film 6c.

Moreover, the multi-layer veneer board 6a is manufactured as follows. That is, a roll RO for manufacturing veneer as shown in FIG. 7 is obtained by thinly peeling wood such as cedar, which is produced in a specific region and has excellent strength and shrinkability, in the same manner as daikon radish is peeled. Unit plywood boards 6al, 6a2... are cut out from this roll RO so that the knots CL are not included, and the 8th
As shown in the figure, it is made of multiple layers such as 11 layers or 8 layers and is bonded to each other.

Here, the reason for cutting out the unit veneer plates 6al, 6a2, etc. from the roll RO so that the knots CL are not included is that defects such as knots CL appear as X-ray images, so accurate X-ray diagnosis is not possible. This is due to the fact that it is not possible to do this, but there are also other reasons to obtain unit veneer boards that do not contain defects such as □ knots as much as possible. The yield from wood such as cedar is extremely low, which poses problems both in terms of effective use of resources and in terms of cost.

Furthermore, because only one side of the plywood board 6a forming the main part is coated with resin and the main part is made of multi-laminated plywood, the multi-laminated plywood forming the main part is prone to warping due to moisture absorption. It is constructed by cutting out plywood boards made from expensive wood, and because only one side of the main part is coated with resin and the main part is made of multi-layered plywood, it will not absorb moisture. This was a problem because warpage was likely to occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a top plate for supporting a patient that is free from defects that appear in X-ray images, does not cause warping, and is advantageous in terms of cost.

[Structure of the Invention] (Means for Solving the Problems) The present invention has a structure in which the following means are taken to solve the above problems and achieve the objects.

That is, the present invention provides a top plate for supporting a patient that is installed in an X-ray imaging device and supports the patient while allowing X-rays to pass therethrough. It is characterized by being constructed by adhering decorative boards impregnated with resin.

(Function) According to such a configuration, the medium density fiberboard that forms the main part is
Since it is made of wood fibers solidified with resin, there are no defects that appear in X-ray images, and since MDF is an isotropic material and decorative boards are glued on both sides. There is no warping, and the wood fiber used as a raw material does not need to be made from expensive wood, so the cost is low.

(Example) The following is a first example of a top plate for supporting a subject according to the present invention.
Figure and Figure 2? I will refer to and explain.

In this embodiment, the main parts of the subject support top plate 12 include:
As shown in FIG. 1, a medium-density fiberboard 10 with a specific gravity of 0.6 to 0.60, which is made by solidifying wood fibers obtained from lauan softwood with resin, is used. Decorative boards 11a and 11b impregnated with melamine resin are bonded to both sides under pressure.

According to such a configuration, the medium density fiberboard 10 forming the main part
is made of wood fibers solidified with resin, so
There are no defects that appear as line images.

In addition, since the medium density fiberboard 10 is an isotropic material and the decorative boards 11a and 1b are bonded on both sides, there is no difference in expansion coefficient due to changes in temperature and humidity on both sides, so warping occurs. do not. In this case, the decorative boards 11a and 11b impregnated with melamine resin have a high surface hardness, so there is an advantage that the surface is hard to be scratched.

Furthermore, the cost is low because the wood fiber that is the raw material is obtained from lauan softwood, etc., which is not an expensive wood.

Although there is a concern that the strength of the top plate 12 of this embodiment is inferior to that of the conventional example, no problem will occur when it is installed in an X-ray imaging device for the following reasons. I can explain. That is, within the bed frame 5 shown in FIG. 5, the area indicated by S in the figure, approximately at the center, is actually used as the photographing area. In other words, if there is no obstacle within this region S, there will be no problem with X-ray photography. Therefore, if there is a concern about the strength of the top plate 12 of this embodiment, as shown in FIG.
The reinforcing member 13a is located outside of the reinforcing member 13a.

13b is provided, and the outer periphery of the frame 13 and the reinforcing member 13a
, 13b supports the top plate 12.

The present invention is not limited to the above embodiments, but can be implemented with various modifications without departing from the gist of the present invention.

[Effects of the Invention] As described above, in the present invention, both sides of a medium density fiberboard made of wood fibers solidified with resin are impregnated with melamine resin [and a decorative board is bonded to the main part]. Since quality fiberboard is made by solidifying wood fibers with resin, there are no defects that appear in X-ray images, and
Since the medium density fiberboard is an isotropic material and has decorative boards bonded on both sides, it does not warp, and the wood fibers used as raw materials do not need to be obtained from expensive wood, so the cost is low.

Therefore, according to the present invention, it is possible to provide a top plate for supporting a subject that has no defects that appear as an X-ray image, does not cause warping, and is advantageous in terms of cost.

[Brief explanation of the drawing]

FIGS. 1 and 2 are diagrams explaining an embodiment of the Osaka test subject support according to the present invention in accordance with its manufacturing process, FIG. 3 is a diagram explaining the operation of the embodiment, and FIG. 5 is a diagram showing the configuration of an X-ray photographing apparatus, and FIGS. 6 to 8 are diagrams illustrating an example of a conventional patient support plate according to its manufacturing process. 10... Medium density fiberboard, lla, llb... decorative board. ffo2&pressure Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] In the patient support top plate installed in the X-ray imaging device that supports the patient and allows X-rays to pass through, a decorative board impregnated with melamine resin is used on both sides of a medium-density fiberboard made of wood fibers solidified with resin. A top plate for supporting a subject, characterized in that it is constructed by gluing together.