JPH0412738A - Top plate for x-ray ct bed device - Google Patents

Abstract

PURPOSE:To easily attach/detach a head rest, and also, to prevent it from falling off by providing a stopper means for preventing accessories such as the head rest from falling off from a fitting metallic fixture. CONSTITUTION:First of all, on the outside of a main body 11, a head rest 12 is aligned with an inserting device to a fitting metallic fixture 13, and subsequently, by pushing a lever part 15c of a stopper 15 or depressing a stopper part 15b to the lower side, the stopper part 15b is opened. At this time, since a plate spring part 15a is bent, the pressure of the lever part 15c or the stopper part 15b is released by inserting the fitting part 15a of the head rest 12 into the recessed part 13a of the fitting metallic fixture 13. In this case, by the leaf spring part 15a, the stopper part 15b is reset to its original position, and also, the end face of the fitting part 12a is pressed, and it is locked. In such a state, by tightening a fixing screw 14, fitting is completed. In such a manner, the head rest 12 is locked surely by the stopper 15, it is prevented from falling off, and also, it can be attached/detached easily.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to a top plate for an X-ray CT bed apparatus on which a subject is placed in X-ray CT diagnosis.

(Prior art) Conventionally, regarding the top plate for this type of X-ray CT bed apparatus, the ninth
This will be described with reference to FIG.

That is, in the drawing, 1 has a body mat 2 laid down,
It is a rectangular top plate main body (hereinafter referred to as the main body) on which the subject is placed, and the longitudinal end of the main body 1 has a recess 4a for inserting a headrest 3 that supports the subject's head.
A mounting bracket 4 having a shape formed thereon is fixed. The headrest 3 is formed with a mounting part 3a into which a fixing screw 5 is screwed.The mounting part 3a is inserted into the four parts 4a of the mounting bracket 4 from the outside of the main body 1, and by tightening the fixing screw 5, the headrest is fixed. 3 was fixed to main body 1. In this case, the bottom surface of the four parts 4a is formed in a tapered shape to prevent the fixing screw 5 from slipping to the outside of the main body 1.

(Problem to be Solved by the Invention) However, in the above-mentioned top plate for the X-ray CT bed apparatus, the headless; 3 is inserted from the outside of the main body 1 and is fixed by tightening the fixing screw 5. However, if the fixing screws 5 become loose or if the fixing screws 5 are forgotten to be tightened, there is a problem that the headrest 3 falls off to the outside of the top plate.

Of course, as shown in FIGS. 11 to 13, the headrest 3 may be inserted and fixed from the inside of the main body 1, that is, from the body mat 2 side, but in this case, when attaching or removing the headrest 3, the body mat 2 This poses a problem in that the body mat 2 becomes a nuisance, and therefore it becomes necessary to temporarily remove the body mat 2, which reduces work efficiency.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a top plate for an X-ray CT bed apparatus in which a headrest can be easily attached and removed and can be prevented from falling off.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a method for inserting accessories such as a headrest that supports the head of a subject from the outside into the end portion. A top plate for an X-ray CT bed apparatus to which a mounting bracket is fixed is provided with stopper means for preventing accessories such as the headrest from slipping out from the mounting bracket.

(Function) In the present invention, since a stopper means is provided to prevent accessories such as a headrest from falling off, accessories such as a headrest are securely fixed to the mounting bracket without falling off to the outside of the top plate. .

(Embodiment) An embodiment of the top plate of the present invention will be described based on FIGS. 1 to 8.

1 to 3, 11 is a rectangular top plate body (
A body mat (not shown) is laid on the main body 11, and a mounting bracket 13 for attaching a headrest 12 that supports the patient's head is fixed to the longitudinal end. There is. A recess 13a into which the mounting portion 12a of the headrest 12 is fitted is formed in the center of the mounting fitting 13. In this fourth part 13a,
An opening 13b is formed so that the attachment part 12a of the headrest 12 can be inserted into the main body 11 from the outside in the longitudinal direction thereof, and a tapered part 13c is formed with which the inserted attachment part 12a is engaged. Further, a fixing screw 14 for fixing the headrest 12 to the mounting fitting 13 is screwed into the mounting portion 12a of the headrest 12.

Reference numeral 15 designates a stopper having a T-shaped cross section and is mounted in the opening 13b of the recess 13a of the mounting fitting 13. As shown in FIGS. 4 and 5, this stopper 15 includes an elastic plate spring portion 15a, and a stopper located at one end of the plate spring portion 15a that presses the end surface of the mounting portion 12a of the headrest 12. Part 15b and this stopper part 15b
A lever part 15c formed at the lower part of the lever is integrally molded with resin.

Further, a portion of the leaf spring portion 15a is fixed within the mounting bracket 13, and at this time, the end surface of the stopper portion 15b is supported so as to face the opening 13b of the mounting bracket 13. Note that 16 is a patient body mat placed on the main body 11. Further, 13d is a tapered groove formed at the bottom surface of the recess 13a at a contact portion with the fixing screw 14 to prevent the fixing screw 14 from slipping to the outside of the main body 11.

Next, with reference to FIG. 6, a method for attaching the headrest 12 to such a top plate will be described.

First, on the outside of the main body 11, the headrest 12 is
Fit the insertion device into the mounting bracket 13 (Fig. 6a). Next, push the lever part 15c of the stopper 15 or press the stopper part 15b downward, and the stopper part 15b
open. At this time, the leaf spring portion 15a is bent. facing,
The mounting portion 12a of the headrest 12 is inserted into the recess 13a of the mounting fitting 13 (FIG. 6b). Then, at the same time as the insertion of the headrest 12 is completed, the pressure on the lever part 15c or the stopper part 1.5b is released. At this time, the stopper portion 15b returns to its original position by the plate spring portion 15a, and also presses the end surface of the attachment portion 12a to be locked. Thereafter, the fixing screws 14 are tightened to complete the installation of the headrest 12 (FIG. 6C).

Thus, while the headrest 12 is in use,
The stopper 15 securely automatically locks the fixing screw 14 and prevents it from falling off due to loosening or forgetting to tighten it.

7 and 8 show the installation H12a of the headrest 12.
FIG. 4 is an explanatory diagram showing a state of engagement between the stopper 15 and the stopper portion 15b.

That is, FIG. 7 shows the stopper part 15b and the mounting part 12a.
Since the engaging portion of the stopper 15 is not tapered, when force is applied in the direction of pulling out the headrest 12, the stopper 15
An example is shown in which the locking effect deteriorates due to deformation.

Therefore, in order to avoid this deformation, as shown in FIG. 8, if the engaging portions of the stopper portion 15b and the attachment portion 12a are formed in a tapered shape, even if force is applied in the direction in which the headrest 12 is pulled out, Stopper part 15b and mounting part 12a
and interlock with each other, resulting in a greater locking effect.

Also, when removing the headrest 12, use the lever part 15c.
Alternatively, the headrest 12 may be pulled out from the mounting fitting 13 by pressing the stopper part 15b downward to release the lock.

In this embodiment, the attachment of the headrest 12 has been described, but it goes without saying that similar effects can be obtained when attaching accessories such as an arm-up holder.

[Effects of the Invention] As explained above, according to the present invention, a stopper means for preventing accessories such as a headrest from slipping out from the mounting bracket is provided, so even when the headrest is attached from the outside of the top plate, the headrest can be easily removed. Falling off can be reliably prevented.

Therefore, 1. Headrests, etc. can be easily installed and removed without removing body mats, etc., and furthermore,
Since the headrest and the like can be attached and removed without moving the patient, the above-mentioned problems can be solved with effects such as improved workability.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention.
The figure is a perspective view of the mounting bracket on the main body, Figure 2 is a plan view of the mounting bracket, Figure 3 is a sectional view taken along line B-B in Figure 2, Figure 4 is a perspective view of the stopper, and Figure 5 is a perspective view of the stopper. Front view, Figures 6(a), (b), and (C) are process diagrams showing how to install the headrest, Figures 7(a), (b), and Figure 8(a), (b) is an explanatory diagram showing the state of engagement between the stopper and the mounting portion of the headrest; FIGS. 9 to 13;
The figures show a conventional example: Fig. 9 is a perspective view when attaching the headrest from the outside, Fig. 10 is a sectional view of the same, and Fig. 1
Figure 1 is a front view when installing the headrest from the inside.
FIG. 12 is a perspective view of the mounting bracket on the main body, and FIG. 13 is a sectional view taken along the line AA in FIG. 11.

Claims (1)

[Claims] An X with a mounting bracket fixed to the end for inserting accessories such as a headrest to support the subject's head from the outside.
A top plate for an X-ray CT bed apparatus, characterized in that the top plate for an X-ray CT bed apparatus is provided with stopper means for preventing accessories such as the headrest from slipping out from the mounting bracket.