JPH04110933A - Cassetteless x-ray radiographing device - Google Patents

Abstract

PURPOSE:To enable continuous photography and to easily take a film magazine in and out by setting a film magazine and film conveyance driving mechanism at a stand-by position shifting inward from an X-ray transmission position, and moving a film carriage between the stand-by position and a photography position. CONSTITUTION:A movable frame 9 is moved into a main body case 8 and sets to set the film magazine 10 at the stand-by position S3, and an unexposed film Fa which is sent out of the film magazine 10 is received by the film carriage 11, moved to the photographing position S1 to perform X-ray photographing, and the carriage 11 is returned to the stand-by position S3, so that the exposed film Fb is collected in the film magazine 10. Further, the movable film 9 is moved to the X-ray transmission position to set the film magazine 10 at the photographing position S1 and also sets the film carriage 11 at the same position S1, where the film is delivered from the film magazine 10 to the film carriage 11, so that the continuous photographing is available. Further, the film magazine is moved to a loading position S2 and then put in and out in the front.

Description

[Detailed Description of the Invention] A. Field of Industrial Application This invention relates to a top plate for carrying a subject, an X-ray tube and an image intensifier arranged to face each other across the top plate. The present invention relates to a cassette-less X-ray fluoroscopic imaging device including a cassette-less quick-shot imaging device.

B. Prior art The cassette-less quick-shooting device that is included in this type of cassette-less X-ray fluoroscopic imaging device is equipped with a film carriage that can move back and forth between a standby position and a shooting position within the main body case, and in the standby position, the film carriage is This device is configured to supply unexploited film to a film carriage and return exposed film from the film carriage to a film magazine. established in The one installed on the back side of the X-ray fluoroscopy table allows you to take in and out the film magazine with an X-ray.
This is done on the back side of the X-ray fluoroscope table, and in the case of the one provided on the front side, the loading and unloading of the Milum magazine is done in the horizontal direction on the front side of the X-ray fluoroscope table.

FIG. 8 shows a conventional example in which a cassette-less quick photography device is installed on the front side of an X-ray fluoroscopy device, and two image intensifiers 6 are placed below the top plate 3 directly below the X-ray tube 5. A film magazine 10 is loaded on its side, and a film carriage 11 is movable along the longitudinal direction of the top plate between a standby position above this and a photographing position directly above the image intensifier 6.

C9 Problems to be Solved by the Invention As mentioned above, cassette-less quick-shooting devices are installed in various forms of X-ray fluoroscopic imaging devices, but there are the following problems in handling the film magazine. Ta.

In other words, the type in which the film magazine is inserted and removed from the back side of the X-ray fluoroscopy table is cumbersome because it is necessary to go around the back side of the X-ray fluoroscopy table when inserting and removing the film magazine. It is necessary to secure a space where the
It was not possible to set up a line viewing table.

In addition, even if the film magazine can be taken in and out from the front, if the film carrier and magazine move in the longitudinal direction of the top plate (see Figure 8), the cassette-less quick-shooting device is horizontally long when viewed from the front. Therefore, the movement range of the fluoroscopic imaging system in the longitudinal direction of the top plate was sometimes restricted.

Furthermore, with this type of camera, continuous photography is not possible because photography is not possible during the travel time of the film carriage.

The present invention has been developed in view of the above circumstances, and is capable of continuous shooting, allows easy loading and unloading of film magazines, and has a vertical movement range in the longitudinal direction of the top plate of a fluoroscopic imaging system. The purpose is to reduce the number of constraints imposed.

08 Means for Solving the Problems In order to achieve the above object, the present invention includes a top plate for carrying a subject, an X-ray tube and an image input device arranged to face each other across the top plate. In a cassette telescope X-ray fluoroscopic imaging device that includes a tensifier and a cassette telephoto imaging device, the main body case of the cassette telephoto imaging device is arranged along the lower side of the top plate so as to span the front and back of the X-ray transmission area; Inside the case, there is a film carrier,
The film carriage is equipped with a film magazine located below these, and a film transport drive mechanism located deep inside these, and the film carriage is moved to the shooting position of the XvA transmission area.
The camera is configured to be movable over three positions, a standby position at the back of the camera, and a loading position in front of the photographing position, and the film magazine and film transport drive mechanism are also configured to be movable independently across the three positions.

86 Effects According to the structure of the present invention, the film magazine and the film transport drive mechanism are set in the standby position which is located deep inside from the X-ray transmission area, and the film carriage is moved between the standby position and the photographing position. , X-ray photography can be performed one by one while using an image intensifier.

That is, the film carriage is moved to the standby position, the unexposed film is received and taken from the film magazine, the film carriage is moved to the imaging position, and X-ray photography is performed.
The carriage is returned to the standby position again and returned to the photographed film magazine, completing one photographing session.

In addition, when the film magazine, film transport drive mechanism, and film carriage are both placed in the shooting position, the film transport drive mechanism is linked to the film magazine and film carriage, respectively, so that continuous shooting by continuously transporting the film is possible. I can do it.

In addition, by moving the film magazine, film transport drive mechanism, and film carriage to the loading position forward from the X-ray transmission area, you can replace the magazine or the intensifying screen in the film carriage from the front of the main body case. I can do it.

F. Example Embodiments of the present invention will be described below based on the drawings.

The first part is a front view showing the entire caseless X-ray fluoroscopic imaging device according to the present invention, and the second part is a side view thereof.
FIG. 3 is a perspective view of the overall appearance.

This cassette-less X-ray fluoroscopic imaging device has a rotating frame 2 attached to a base 1 installed on the floor so as to be rotatable around an axis P in the horizontal direction. A top plate 3 for carrying a subject is provided so as to be movable in a direction perpendicular to the center P, and an X-ray tube 5 is installed above the rotating frame 2 via a support 4. An image intensifier 6 is provided below the top plate 3 and facing the X-ray tube 5. Furthermore, between the top plate 3 and the image intensifier 6, there is a cassette tray for photographing and recording transmitted X-ray images. A quick-shot photographing device 7 is provided.

FIG. 4 is a longitudinal cross-sectional view of the cassette-less quick photographing device 7, and FIG. 5 is a cross-sectional view taken along the line A--A in FIG. 4.

The main body case 8 of this quick-shot photographing device 7 is constructed in the shape of a rectangular box that extends forward and backward from the top plate 3, and inside it is a movable frame 9 that can be moved in the forward and backward directions.
, a film magazine 10 that is positioned and attached to the film magazine IO, and a film carrying horn 11 that is movable in the front and rear directions above the film magazine IO.

The movable frame 9 is equipped with rollers 13 on the front, back, left and right sides that are guided by a pair of left and right guide rails 12 provided in the main body case 8, and is used to lock a pair of left and right chains 14 wound horizontally in the main body case 8. The metal fitting 14a is the roller support shaft 13a
By driving the chino 14 forward and backward by a motor (not shown), the movable frame 9 is horizontally moved across the front and back of the X-ray transmission area. A film magazine 10 is removably loaded into the movable frame 9 at a certain position by a launch mechanism (not shown), and the film machine IO is located at the innermost part of the movable frame 9.
A film transport drive mechanism 15 for the film carriage 1 is also provided.

The interior of the film magazine 10 is divided into upper and lower sections, with a film supply chamber 16 in which unphotographed films Fa are stacked front to back, and a film recovery chamber 17 in which photographed films Fb are stacked front to back, located at the bottom. It is provided.

The unshot film Fa in the film supply chamber 16 is supported by the receiving plate 19 supported by the wings 18, and the unshot film Fa in the film supply chamber 16 is
It is pressed against a feed-out roller 20 provided near the right end of the inside. Further, a horizontally long film feed-out opening 21 is formed on the right side wall of the film magazine 10, and as the feed-out roller 20 is driven and rotated, the outermost layer of unphotographed film Fa is fed out to the right in a horizontal position and guided. 22
The film is fed into the right end of a film carriage 11, which will be described later.

Further, a horizontally long film return opening 23 is formed on the left side wall of the film magazine 10, and the film carriage 1
The photographed film Fb fed out from the left end of the camera 1 is fed into the film recovery chamber 17 via a guide 24.

Inside the film carriage 11 are a pair of upper and lower intensifying screens 25 (
Actually, it is supported via a support plate.

) are provided facing each other so as to be freely openable and closable, and the front portion of the carriage is provided with a heald 26 and a group of rollers 27 for feeding the film between the intensifying screens 25.

The upper horizontal straight path portion of the heald 26 serves as a film transport path, and the right end of the transport path faces a horizontally long film entrance 28 formed on the right side wall of the carriage. Further, a film outlet 29 facing the left end of the transport path is formed on the left side wall of the carriage.

As shown in FIG. 5, the support shaft 20a of the feed roller 20 of the film magazine 10 projects toward the rear of the magazine, and a driven roller 30 is provided at the tip thereof. A film transport drive mechanism 1 provided in the inner part of the movable frame 9
5 is provided with a drive roller 31 that contacts the passive roller 30 in an elastic manner, and drives the film magazine] 0 to W.
At the fixed position 2, power is transmitted from the drive roller 31 to the feed roller 20-1.

Drive roller 31: The drive roller 31 is rotated by a motor (not shown) provided with a film transport drive mechanism 1522, and is driven and stopped as appropriate.

Also at the rear protruding end of the support shaft 32a of the drive pulley 32 around which the heald 26 is wound in the film carriage 11, there is a passive roller 34 which receives power by elastically contacting the drive roller 33 provided in the film transport drive mechanism 15. is provided. This drive roller 33 is also helded and interlocked with a motor (not shown).

There are rollers 3 at the front and rear of the left and right outer surfaces of the film carriage 11.
5 is attached, and guide rails 36 for engaging the rollers 35 are attached to the inner surfaces of the left and right side walls of the main body case 8.

A chain 37 is wound around the left and right sides of the main body case 8 in the front, back, left and right directions, and a locking fitting 37a attached to this chain 37 is connected to the roller support shaft 3 of the film carriage 11.
5a, when engaged, the film carriage 11 moves along the guide rail 36 to the imaging position WS1 directly below the X-ray transmission area, to the loading position S2 in front of it, and to the standby position S at the inner rear by the forward and reverse rotation of the chain 37. It is constructed so that it can move back and forth horizontally while lying down.

A loading port 38 is formed at the front end of the main body case 8 and is opened and closed by a lid cover 8a.

According to the caseless X-ray fluoroscopic imaging apparatus configured as described above, as shown by the solid line in FIG.
0 to the standby position S, and this film magazine 1
The unphotographed film Fa sent out from 0 is received by a film carriage 11, returned to the photographing position S1, and the photographed film Fb is collected into a film magazine 10. In this state of use, fluoroscopy using an image intensifier is possible.

When the movable frame 9 is moved to the X-ray transparent area and the film magazine 10 is placed at the imaging position S1, and the film carriage 11 is set at the same position S, the position between the film magazine 1° and the film carriage 11 is moved on the spot. Since the film F can be transferred, continuous shooting can be performed.

However, during this continuous shooting, Image Intenso Fire 6
cannot be used.

When the movable frame 9 is moved to the front loading position S2 and the film magazine 10 and film carriage 11 are set so as to be lowered into the loading slot 3B, the lid cover 8a can be opened to replace the film magazine 10 or to remove the film carriage 11 itself. can be done in the wide space in front of the top plate 3.

As described in detail of the G1 invention, according to this invention, the film carrier, the film magazine, and the film magazine are moved in a vertically overlapping state, and the photographing position is changed to the loading position in front and the waiting position in the inner back. As a result, the horizontal width of the top plate of the quick-shooting device is small in the longitudinal direction, and there are few restrictions on the lateral movement range of the shooting device diameter. Not only can you shoot one shot at a time, but you can also shoot continuously, and the film magazine, film carrier, and film can now be easily and conveniently inserted into and taken out of the main body case from the front part of the top plate. Ta.

[Brief explanation of drawings]

1 to 7 show the cassette telegraph χ according to the present invention.
An example of a line perspective imaging device is shown, and FIG. 1 is an overall front view;
Figure 2 is a side view of the whole body, the third circle is a perspective view of the whole body, Figure 4 is a longitudinal sectional front view of the cassette telephoto shooting device, Figure 5 is a sectional view taken along the line AA in Figure 4, and the sixth is a cassette telescope X-ray perspective view. FIG. 7 is a schematic longitudinal sectional side view showing the entire photographing device, and FIG. 7 is a perspective view showing the general general configuration of the cassette-less quick-shoot photographing device. Moreover, FIG. 8 is a front view of a conventional example. 3...Top plate 5...Chi-ray tube 6...Image intenso fire 7...
...Cassetteless quick-photographing device 8...Body case 10...Film magazine 11...Film carrier, ji 11...Film transport drive mechanism

Claims (1)

[Claims] A cassette-less X-ray fluoroscopic imaging device comprising a top plate for carrying a subject, an X-ray tube and an image intensifier arranged to face each other across the top plate, and a cassette-less quick-shot imaging device. The main body case of the cassette-less snapshot imaging device is arranged along the lower side of the top plate so as to extend in front and behind the X-ray transmission area, and within the main body case are a film carriage and a film magazine located below these. and a film transport drive mechanism located deep inside these, and the film carriage is installed in three positions: an imaging position for the X-ray transparent area, a standby position deep inside the film carriage, and a loading position in front of the imaging position. A cassette-less X-ray fluoroscopic imaging device configured to be movable across the three positions, and also configured to allow the film magazine and film transport drive mechanism to be independently movable across the three positions.