JPS59200637A - X-ray tomography table apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an X-ray fluoroscopic imaging platform device that includes both a spot shot device and a Butsky device.

[Technical background of the invention]

Figure 1 shows the spot shot device and Butsky device.
2 shows an X-ray fluoroscopic imaging table device equipped with two. In FIG. 1 (2), the bed main body 1 is equipped with a top plate 6 on which the subject 2 is placed. Further, a spot shot device 5 is disposed at a position f2 above the input board B and facing the first X-ray tube 4. The spot shot device 5 and the spot shot device 5 are movable along the body axis direction of the subject 2.
If desired, it is now possible to take X-ray film photographs of the location.

Moreover, the first X-ray tube 4 and the spot shot device 5 are
It is possible to move from the front side of the drawing in a direction along the back side C2.

The butt key device 6 is housed inside the bed main body 1,
It is movable along the back surface C2 of the top plate 6. The Butsky device 6 is equipped with a grid for storing and holding two X-ray films and for preventing scattered X-rays on the X-ray film. An opening 1a is provided along the movement path C2,
The X-ray film can be attached and detached at any position.

A second tube for X-ray film photography in the Butsky device 6
The X-ray tube 7 is attached to the ceiling 8 and is movable along the body axis direction C of the subject 2 in conjunction with the movement f1 of the Butsky device 6.

Next, the moving section of the butt key device 6 will be explained with reference to FIG. In FIG. 2, the butt key device 6 is placed on the bed 1, guided by a rail 9*10c disposed along the longitudinal direction of the bed 1, and guided in the direction of arrow A or B shown in FIG.
Two are movable. When using the spot shot device 5 (: indicates that the butt key device 6 is placed at the end in the direction of A in the figure; conversely, when the butt key device 6 is used, f
Second, the spot shot device #6 is detached from above the top plate 6.

One end of a cable 11 for controlling and driving the Butkey device B is connected to the Butkey device 6.

The other end of the cable 11 is connected to the end of the bed main body 1 in the direction B in the drawing. This cable 11 is connected to the first cable. Second
It is clamped to the links 12 and 13 of C1 and is treated with C2 so as not to interfere with C1 and other functions when the Butsky device is moved. Said 1st. The second links 12 and 13 are
Hinged one end 14.15'! r via the Butsky device 6
The two ends C of the bed main body 1 in the B direction shown in the figure are connected to each other (=, and the other ends are connected together by a hinge 16I).

1st. The second links 12 and 13 open and close the hinge 16 at the center C2 as the Butkey device B moves, and guide and hold the cable 11. In addition, the above-mentioned No. 1. The second links 12 and 13 are located at the ends (hereinafter also referred to as standby positions) (hereinafter also referred to as standby positions) (
When the bed is placed in the second position, it forms a straight line to seal the opening 1a of the bed main body 1. This is C2. When using the spot shot device 5 [2,
Exposure to scattered X-rays C2 from the first X-ray tube 4 is prevented.

[Problems with background technology]

Said 1st. The second link 12.13 must have the function of clamping the cable 11 and of sealing the opening 1a to prevent scattered X-rays.

However, the first. There were the following drawbacks in the operation of the second link 12°16. That is, as shown in FIG. However, when the Butkey device 6 starts moving in the direction B shown in the figure C2 in this state, the hinge 16 becomes a consideration point and moves in the direction C shown in the figure, or in the direction shown in the figure. If it were to move in the direction shown, the first and second links 12 and 16 would protrude from the bed body 1. In order to prevent this, C2 is inserted in the direction C shown in the figure, and the first and second links 12 and 15 are
It is necessary to set f2 so that it has an angle in advance so that the hinge 16 does not become a point of consideration. However, at the hinge 16, the cable 11 must be given slack to prevent excessive bending stress from being applied. Therefore,
Links 12 and 13 of No. 1 and 2 (if the two angles are too high, the slack part of the cable may interfere with spot shot photography. Furthermore, C2, according to such means C2, the Butsky device The accuracy of the stop position is required, making setting control extremely difficult.

[Purpose of the invention]

This invention was made in view of the above-mentioned circumstances, and is designed to prevent the diffusion of scattered X-rays when the Butsky device is in the standby position [2], and to prevent the diffusion of scattered X-rays when using the spot shot device (=, It is an object of the present invention to provide an X-ray fluoroscopic photographing platform device that can prevent the appearance of X-rays in the field of view of X-ray irradiation.

[Summary of the invention]

This invention adopts a four-joint rotating chain as the rotational fulcrum of the second link, and when the butkey device is in the standby position, the instantaneous center of the opposite link to which the second link is fixed relative to the fixed link is set to the second link. The above objective is achieved by defining two links at a predetermined distance C in a direction substantially perpendicular to the longitudinal direction of the two links.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 is a plan view of the X-ray fluoroscopy table apparatus according to the present invention with the top plate removed, and FIG. 5 is a schematic explanatory diagram of a four-joint rotation chain that is a rotation fulcrum of the second link. In FIG. 4 C2, there are two members C having the same function as those in FIG.
The same reference numerals as those shown in the figures will be used to omit the detailed explanation. The first link 20 in FIG. 4C2 is provided with hinges 14.degree. 16 at both ends and has a first clamper 21 for clamping the cable 11 along its longitudinal direction f2.

The second link 22 has one end connected to the hinge 12+2 and the other end connected to the bed main body 11 via a four-bar rotation chain 23 (details will be described later). Also, the second
The link 22 is provided with a slider 24 so as to be slidable along its longitudinal direction, and one end of a second clamper 25 is rotatably held on the slider 24 via a hinge 26. . The other end of the second clamper 25 is connected to the bed body 1
Near the setting position ζ2 of the four-section rotational chain 26, the hinge 27
It is attached via.

Next, two details of the four-bar rotation chain 23 will be explained with reference to FIG. 5. In Figure 5, the four-node rotation chain 2
6 consists of a fixed link 30 fixed to the bed main body 1C, a link 31.32 forming a rotational pair with the fixed link 30, and an opposing link 36 forming a rotational pair with the link 31.32 at both ends C2. ing. The second links 22 are fixed to the opposing links 33 so as to be parallel to each other, for example. Further, the link 32 has a bent shape at its intermediate portion. Furthermore, when the second link 22 is set parallel to the longitudinal direction of the bed main body 1, that is, when the butt key device 6 is set at the end in the direction A in FIG. Said fixed link 6
The instantaneous centers of the two opposing links 36 are set at an infinite distance from the fixed link 30.

The instantaneous center of opposite link 3B with respect to fixed link 30 is
It is obtained as the intersection of the lines connecting the pivot points at both ends of the links 31 and 32, but as shown in FIG. 5, since these lines are parallel to each other, the instantaneous center is C:
Become.

The operation of the X-ray fluoroscopy table apparatus having the two configurations described above will be explained with reference to FIGS. 6 and 7.

First, the action of the four-joint rotational chain 26 as a rotational fulcrum of the second link 22 will be explained. First, let us consider the case where the butt key device 6 is placed in the standby position C2 in FIG. 4C2. In this case, when performing X-ray film photography using the spot shot device 5, scattered X from the opening 1a
In order to prevent the line from spreading, first. Second link 20.
21 forms a straight line and seals the opening 1a. From this standby position, the butkey device 6 is
When moving in the direction C2, the adoption of the four-joint rotation chain 2 as the rotation fulcrum of the second link 22 prevents the hinge 16 from becoming a point of concern.

As shown in FIG. An infinite degree distance in the longitudinal direction and the vertical direction (it is fixed in two directions. Therefore, when the butt key device 6 moves in the direction of arrow B shown in the figure C2, the moving speed direction of the opposing link 33 is between the instantaneous center and the opposing link. C2, which is perpendicular to the line connecting 33, that is, coincides with the moving direction (B direction) of Butsky device B. From this C2, the second link 2
2 will always move in the direction B in the figure, and the hinge 16 will not be a consideration point. Therefore, the Butsky device 6
When starting from the standby position in the direction of arrow B (C) in the figure, the first,
There is no possibility that the second link will pop out from the side of the bed body 1. Conversely, as a result, the butt key device 6 is placed in the standby position (if there are two [2, 1.
．． 22 makes it possible to seal the opening 1a. For this reason, it is possible to prevent the scattering of X-rays from diffusing during X-ray film photography using the spot shot device 5.

In addition, the four-node rotation chain (the opposing link 66 at the second
As shown in FIG.
can be moved along the longitudinal direction.

Next, a case will be described in which the button key device 6 is moved f2 in the direction A in the figure and set to the standby position. Conventionally, the setting accuracy of the standby position was required, but according to the present invention (2), a slight deviation in the standby position does not pose a problem. Even if the second link 22 moves ζ2 in the direction A shown in the illustration and exceeds the normal standby position, the second link 22 must move in the direction ζ2 shown in the arrow C after becoming in a straight line C2 with the first link 20. Therefore, the first.
There is no risk that the second links 20, 22 will protrude from the sides of the bed body 1.

Next, the processing of the cable 11 due to the movement of the butt key device 6 will be explained with reference to FIG. 8(a), (b), (
c) is the first change due to the movement of the Butsky device. It is a schematic diagram which shows the positional relationship of the link of m2, and a subbeshi child. Figure 8 (a
+ is Butsky device! :6 indicates the end in the direction of arrow B (indicates the case where two devices are installed).

In this case, the bevel 24 approaches the hinge 16, and the cable 11 held by the first and second links has a bend near the hinge 16. When the butt key device 6 starts moving in the direction A shown in the figure, the slider 24 slides in the direction E shown in FIG. For this reason, hinge 16
The deflection of the cable 11 in the vicinity of is gradually reduced by f2.

Then, when the butkey device 6 is set to the standby position ζ,
As shown in FIG. 8(l-), the first and second links 20, 22 are in a straight line, and the slider 24 is set at the farthest position from the hinge 16. Therefore, the cable 1
1 is the distance C between the slider 24 and the hinge 16.
2, the cable is absorbed by the cable so that there is almost no bending of the cable. Therefore, the cable 11 does not appear in the X-ray irradiation field using the spot shot device 5.

It goes without saying that this invention is not limited to the above embodiments (2) and includes various modifications within the scope of the gist of the invention. is not limited to being at an infinite distance in the longitudinal direction and perpendicular direction of the second link. In other words, when the butt key device 6 is in the standby position [=, the second link 22
It is sufficient if the direction of movement n1 is determined in two directions so that the longitudinal direction of the second link (C2) is close to the second link.Therefore, it is not necessary to be strictly perpendicular to C2, and if a predetermined distance f2 direction is determined in two directions, the above-mentioned The direction of movement can be set as follows.

〔Effect of the invention〕

As explained above, according to this invention C2, it is possible to prevent the occurrence of considerations when starting the Butkey device, so that when the Butkey device is in the standby position, the first. The opening can be sealed by aligning the second link. Therefore, it is possible to prevent the scattering of X-rays from spreading when using the spot shot device. Also, 1st. Since the second link does not protrude from the side surface of the bed body, operability is improved. Furthermore, since positional accuracy is not required when setting the standby position of the Butkey device, the configuration of the device can be simplified.

In addition, one end of the cord clamper of the second link is made into a bezel, and the other end is rotatable to the main body of the bed. Therefore, it is possible to prevent the cable from appearing in the X-ray irradiation field of the spot shot device.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of an X-ray fluoroscopic imaging table device, Fig. 2 is a plan view showing the moving part of a conventional Butski device, Fig. 6 is a schematic explanatory diagram showing the movement of a conventional Butski device, and Fig. 4 is a schematic diagram showing the movement of a conventional Butski device. A plan view showing the moving part of the Butsky device in the X-ray fluoroscopy table device according to the present invention C, FIG. 5 is a schematic explanatory diagram of the four-joint rotation chain that is the rotation fulcrum of the second link, FIGS. 6 and 7 are explanatory diagrams showing the operation of a four-node rotation chain, and Fig. 8 (al, (bl)
, (cl is a schematic diagram showing the positional relationship of the first and second links and sliders accompanying the movement f1 of the Butsky device. 1... Bed main body, 1a... Opening, 3... Top plate ,
6...Putsukigo device, 11...Cable, 14.1
6... Hinge, 20... First link, 21.25.
... Cord clamp, 22 ... Second link, 26.
...Four-section rotating chain, 24...Slider, 27...Hinge, 60...Fixed link, Ro6...Opposed link.

Claims (2)

[Claims] (1) One end of the back side of the top plate of the bed main body and the two notched openings is set as a standby position, and a Butkey device movable along the opening [2], and the Butkey device and the other end of the opening It is equipped with a clamper for clamping the cable connected to (2) one end of each is held by the butkey device and the other end of the opening (2) and the other end is rotatably connected together. X with the first and second links
In the fluoroscopic imaging table device, a rotation fulcrum that holds one end of the second link at the other end C2 of the opening is connected to a fixed link fixed to the bed body F2 and a fixed link fixed to the bed main body F2. and an opposing link, wherein the instantaneous center of the opposing link with respect to the fixed link at the standby position of the Butsky device is at a predetermined distance in a direction substantially perpendicular to the longitudinal direction of the second link. Characteristic X-ray fluoroscopic imaging table device. (2) The clamper of the second link has one end connected to the second link.
Claim 1, characterized in that the link is held movably along the longitudinal direction of the link, and the other end is held rotatably near the fixed link setting position C of the bed main body.
2. The X-ray fluoroscopy table device according to 2.