JPH0784327A - Fluoroscopic photographing device - Google Patents

Abstract

PURPOSE:To obtain a state of sufficiently performing fluoroscopy in the prior stage in cassette photographing performed instead of cassetteless photographing. CONSTITUTION:In a fluoroscopic photographing device formed being provided with a carrier 3 for moving a film holder 1 into a specified position while holding it and then conveying it into a photographing position, the carrier 3 is provided with mechanism capable of lowering the film holder 1 by one stage when the carrier 3 moves into the specified position, and mechanism capable of disposing a quick photographing film cassette 8 slidingly into the photographing position in the original stage of the film holder 1 lowered by the above-mentioned lowering mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray fluoroscopic imaging apparatus, and more particularly to improvement of a carrier for holding a film holder.

[0002]

2. Description of the Related Art In an X-ray radiographing apparatus, when the radiographing is performed with a film, it is usually the case that the film holder is first moved to a predetermined position (retracted position during fluoroscopy) and then to the radiographic position. Has become.

On the other hand, there is an X-ray imaging apparatus of this type that can perform so-called cassette telephoto shooting.

That is, as shown in FIG. 4, the carrier 3 holding the film holder 1 remains in a predetermined position (the retracted position when seen through), and the cassette holder 2b with the cassette 8 is directly inserted into the photographing position. Then, X-ray photography is performed.

Here, the cassette holder 2b is fixed to the fixed plate 11
By moving a and 11b, a cassette of each size can be attached.

[0006]

However, the X-ray fluoroscopic imaging apparatus having the above-mentioned structure has the cassette holder 2
While inserting b, as shown in FIG. 2, since the cassette holder 2b is mounted on the image receiving device 9 used during the fluoroscopic imaging, the problem that the fluoroscopic imaging cannot be performed is pointed out. It was.

Therefore, the present invention has been made based on such a situation, and the purpose thereof is to sufficiently observe the fluoroscopy in the preceding stage in the case of cassette imaging in place of cassette telescopic imaging. An object of the present invention is to provide an X-ray fluoroscopic imaging apparatus that can be put into a state in which it can be performed.

[0008]

In order to achieve such an object, the present invention basically requires moving the film holder to a predetermined position while holding it, and then moving the film holder to a photographing position. In an X-ray fluoroscopy apparatus provided with a carrier for carrying,

A mechanism for lowering the film holder by one step when the carrier moves to the predetermined position and a photographing position in the original step of the film holder lowered by this mechanism. It is characterized in that it is provided with a mechanism capable of slidingly disposing a film cassette for quick shooting.

[0010]

In the X-ray fluoroscopy apparatus constructed as described above, first, the carrier for transporting the film holder to a predetermined position lowers the film holder down one step at the predetermined position, and then the film holder. The film cassette for quick photography can be slid at the shooting position in the original stage before the descent.

Therefore, instead of so-called cassette shooting, so-called cassette shooting can be performed whenever necessary.

Further, the slide arrangement of the film cassette for quick photography can be performed after moving the carrier to a predetermined position. This means that, after the carrier is moved to the predetermined position and before the slide arrangement of the quick-shooting film cassette, the fluoroscopy for photographing by the quick-shooting film cassette can be sufficiently performed.

Conventionally, when a quick-shooting film cassette is slidably arranged, the film cassette is mounted on a cassette holder, and the cassette holder is an obstacle.

Therefore, it becomes possible to set the cassette radiographing performed in place of the cassette telephoto radiography to a state in which the fluoroscopy in the preceding stage can be sufficiently performed.

[0015]

1 is a sectional view showing an embodiment of a carrier 3 used in an X-ray fluoroscopic apparatus according to the present invention.

In FIG. 1, rollers 5a and 5b are attached to the film holder 1 so as to move on the carrier 3 in the lateral direction in the drawing.

The carrier 3 is provided with rails for guiding the film holder 1. This rail is branched in the middle, and the switching lever 4a,
The moving direction of the film holder 1 is switched by 4b.

On the other hand, the cassette holder 2a is not fitted with the above-mentioned rollers, but is slidably inserted into the carrier rail.

Therefore, the insertion direction of the cassette holder 2a is not switched by the switching levers 4a and 4b.

Next, the operation of the above arrangement will be described.

First, the cassette holder 2a is not used during normal photographing, that is, during cassette photographing. At this time, the switching levers 4a, 4b
Is rotated counterclockwise with respect to the fulcrums 6a and 6b and is in a position as shown in FIG.
It is designed to move on the upper rails of. And
The carrier 3 including the film holder 1 is moved to the photographing position in the direction perpendicular to the plane of the drawing.

In case of cassette photography, first, the film holder 1 is moved to the leftmost end of the upper rail of the carrier 3. Next, the switching lever 4
The a and b are configured to rotate clockwise with respect to the fulcrums 6a and 6b and branch the upper rail of the carrier 3.
The film holder 1 moves from left to right according to this rail, and descends along the branch rail.

The switching levers 4a and 4b rotate counterclockwise while sandwiching the rollers 5a and 5b of the film holder 1, and the film holder 1 is lowered and retracted as shown in FIG. Then, the cassette holder 2a can be inserted into the designated position of the upper rail of the carrier 3.

After that, as in the case of cassette shooting, the carrier 3 is moved to the shooting position.

Further, the detailed structure of the cassette holder 2 will be described below.

FIG. 2 is a block diagram showing an embodiment of the cassette holder 2.

The cassette holder 2 shown here is only for a certain cassette size, but if the cassette holder 2 has a different size, it can be used for each size by using the auxiliary frame pallets 13a and 13b. Magnets 14a and 14b are attached to the auxiliary frame pallets 13a and 13b, and the type of the auxiliary frame pallet, that is, the cassette size can be detected by the presence or absence of the magnets 14a and 14b by the magnetic sensors 12a and 12b. When inserting the cassette holder 2c, the lever 7 can be pulled to the front side and used, and can be inserted to the photographing position. This is because the photographing position is generally far from the insertion port of the photographing device.

A positioning pin (not shown) is provided on the lever 7 so that the cassette holder 2a can be positioned. Further, when carrying the cassette holder 2a, the lever 7 can be returned to the position shown by the dotted line in the figure, so that it can be easily carried.

FIG. 3 is a block diagram showing another embodiment of the cassette holder 2. In this embodiment, the cassette holder 2 is divided into cassette holders 2d and 2e for weight reduction. Since the cassette holders 2d and 2e are guided by the rails of the carrier 3 in the vertical and horizontal directions, the cassette holders 2d and 2e do not fall even if divided in this way.

Pallets 15a and 15b are pallets 15
By replacing with c, 15d, 15e, and 15f, each size cassette can be attached, and at the same time, as in the case of the above-described embodiment, the magnet 1 for detecting the cassette size is used.
4a14b are attached respectively.

The pallets 17a17b can be moved to the respective cassette size positions by pulling up pins (not shown).

According to the X-ray fluoroscopic apparatus constructed as in this embodiment, first, the carrier for transporting the film holder to a predetermined position lowers the film holder one step down at the predetermined position. The film cassette for quick shooting can be slid at the shooting position in the original stage before the film holder is lowered.

Therefore, instead of so-called cassette shooting, so-called cassette shooting can be performed whenever necessary.

The slide arrangement of the film cassette for quick photography can be performed after the carrier is moved to a predetermined position. This means that, after the carrier is moved to the predetermined position and before the slide arrangement of the quick-shooting film cassette, the fluoroscopy for photographing by the quick-shooting film cassette can be sufficiently performed.

Conventionally, when a quick-shooting film cassette is slidably arranged, the film cassette is mounted on a cassette holder, and the cassette holder is an obstacle.

Therefore, it becomes possible to set the cassette radiographing, which is performed instead of the cassette telephotographing, in a state in which the fluoroscopy in the previous stage can be sufficiently performed.

[0037]

As is apparent from the above description,
According to the X-ray fluoroscopic imaging apparatus of the present invention, it becomes possible to perform cassette imaging in place of cassette telescopic imaging in a state in which fluoroscopy in the preceding stage can be sufficiently performed.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a carrier used in an X-ray fluoroscopic imaging apparatus according to the present invention.

FIG. 2 is a sectional view showing an embodiment of a cassette holder used in the X-ray fluoroscopic imaging apparatus according to the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the cassette holder used in the X-ray fluoroscopic imaging apparatus according to the present invention.

FIG. 4 is a schematic perspective view showing an example of a conventional X-ray fluoroscopic imaging apparatus.

[Explanation of symbols]

 1 film holder 2 cassette holder 3 carrier 8 cassette

Claims (1)

[Claims] 1. An X-ray fluoroscopic imaging apparatus comprising a carrier for moving a film holder to a predetermined position while holding the film holder, and then transporting the film holder to an imaging position. There are a mechanism that can lower the film holder one step down when it is moved to a predetermined position, and a mechanism that can slide the quick-shooting film cassette to the shooting position in the original step of the film holder lowered by this mechanism. An X-ray fluoroscopic imaging apparatus, which is provided.