JPS6129491B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an X-ray fluoroscopic imaging apparatus constructed by connecting a cassette-less X-ray fluoroscopic imaging table and an automatic developing device.

If the X-ray fluoroscopic imaging device and the automatic developing device can be connected together to automatically process the development of the cut film that has already been taken, it will be possible to save labor and increase efficiency in X-ray fluoroscopic imaging by using the cassetteless X-ray speed imaging device. It is possible to further improve this. However, in a conventional system in which a cassette-less X-ray photographic device and an automatic developing device are connected, the fluoroscopic photographing table is raised and lowered in order to change the diagnostic position of the subject, so the rapid photographic device It is difficult to connect the image forming apparatus and the automatic developing device together, and there are cases in which the direction of the photographic stand is limited, and there are cases in which some operations require manual labor. There is still room for improvement, and a fully functional so-called X-ray fluoroscopic imaging system has not yet been provided.

In view of the above-mentioned current situation, the present invention uses a cassette-less X-ray fluoroscopic imaging device to feed photographed film into a connected automatic developing device each time it is used for development, regardless of the vertical position of the fluoroscopic imaging table, that is, its table. The purpose of the present invention is to provide an X-ray fluoroscopic imaging device that makes it possible to do this.

As a technical means to achieve the above object, the present invention has configured an X-ray fluoroscopic imaging apparatus as follows. That is, an X-ray fluoroscopic imaging table, a film feeding mechanism that feeds out an exposed cut film along the central axis of the up/down rotation of the fluoroscopic imaging table, and a film feeding mechanism provided adjacent to the film feeding mechanism, A film holder rotates around the central axis of the table, and the film holder is moved to raise and lower the fluoroscopic imaging table so that the film holder and the feed-out opening of the film feeding mechanism always face each other. a rotating means for rotating the film receiver to a rotational angle position in which the cut film transferred to the film receiver falls under its own weight; and an automatic developing device connected to the film tray via a guide for guiding the cut film that has fallen from the film tray.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view of the entire device of the present invention, and FIG.
The figure is a side sectional view of the - cross section of FIG. 1 viewed in the direction of the arrow.

In the figure, reference numeral 1 denotes a support for holding an X-ray tube 2 and a movable aperture device 3, which is fixed together with a table 6 to a lifting frame 5 rotatably mounted on legs 4. 7 is the center of rotation of the frame 5 for raising and lowering. Reference numeral 8 denotes a snapshot photographing device, which is attached below the table 6, and into which is loaded a loading magazine 10 containing a large number of unphotographed cut films 9, and one sheet of the unphotographed cut film 9;
A carriage 11 that reciprocates between a standby position and a photographing position is attached. Reference numeral 11' indicated by a two-dot chain line in FIG. 1 is a carriage sent to the photographing position. The cartridge 11 is provided with a pair of upper and lower clamping plates to which an intensifying screen is fixed so as to clamp and tightly contact the loaded cut film 9. (not shown). As shown in FIG. 1, the loading magazine 10 and the carriage 11 in the standby position have a cross section (- ) is located above. Reference numeral 12 denotes a feeding mechanism for the photographed film, which transports the photographed cut film 9 fed out from the carriage 11 which has returned from the photographing position to the standby position, to a plurality of pairs of conveying rollers 13, and a feeding guide 14 connecting the conveyance rollers 13 therebetween. Through the automatic developing device 1
It serves the purpose of sending it to 0. The feed mechanism 12 is attached to the raising/lowering frame 5 so that the center line of its right end opening is orthogonal to the straight line at the rotation center point 7. Further, a bent flange-shaped surface 15 at the opening at the right end of the feed mechanism 12 is slidably engaged with an annular groove 17 provided at a connection portion of the film direction changing device 16 with the feed mechanism 12. . Therefore, the feeding mechanism 12 is rotated on the outer peripheral surface of the flange-shaped surface 15 at its tip by the rotational movement of the tilting frame 5 around the rotational center 7, using the annular groove 17 as a guide. Flange-like surface 15 and annular groove 17
The slidable engagement of the film direction changing device 16 completely blocks light from entering the film direction changing device 16. Note that 18 is an image intensifier.

Reference numeral 19 denotes a film holder, which is attached in a cantilever manner to the shaft end of a drive shaft 21 of a drive device 20 at the center of its right end surface, and the center of the drive shaft 21 of the drive device 20 is aligned with the rotation center of the feed mechanism 12. In other words, the film direction changing device 1 is rotated so as to coincide with the rotation center 7.
It is fixed to the outer wall of 6. 22 is a positioning stopper, and 23 is a microswitch contact, the former being fixed to the flange-like surface 15 and the latter microswitch being fixed to the lower left inner wall surface of the film direction changing device 16, respectively.

FIG. 3 is a sectional view taken in a direction perpendicular to the drive shaft 21, showing details of the film direction changing device 16. In the figure, 22 indicates the position 22' where the positioning stopper 22 is closed when the table 6 is held in a horizontal position.
1 and 2 respectively show positions at which the positioning stopper 22 is closed when the table 6 is tilted at a predetermined angle in the lower right direction. The film tray 19 is rotated clockwise by the drive device 20 as shown in FIG. 3, except when dropping the cut film 9 into the automatic developing device 30.
1, so when the table 6 is started (rotated clockwise about the rotation center 7 in FIG. 1), the torque causes the table 6 to fall (in FIG. 1). When the film holder 19 is rotated counterclockwise with respect to the rotation center 7), the regulating force applied by the positioning stopper 22 against the torque causes the film holder 19 to reach the stop position of the positioning stopper 22 in both cases. be rotated.

That is, the film receiver 19 performs a follow-up operation via the feeding mechanism 12 which rotates in synchronization with the tilting movement of the table 6, and as a result, the right end opening of the feeding mechanism 12 and the film direction changing device 16
The left end opening of the inner film holder 19 is aligned with the opening. Guide plates 24 and 25 guide the cut film 9 to the automatic developing device 30.

Next, the operation of this device will be explained. A loading magazine 10 containing a large number of unphotographed cut films 9 is mounted on a snapshot photographing device 8. It is taken out from the opening of the loading magazine 10 using a suction cup (not shown) or the like.
via conveyance rollers and feed guides (not shown).
One unphotographed cut film 9 is loaded into the carriage 11 in the standby position via the route shown by the two-dot chain line. The region to be examined on the table 6 is diagnosed by X-ray fluoroscopy via the X-ray tube 2, movable aperture device 3, and image intensifier 18, the region to be imaged is determined, and then the X-ray image is taken. To do this, the previously loaded cut film 9 is held between a pair of upper and lower clamping plates (not shown) to which an intensifying screen is fixed, and is transferred to the carriage 11 while being clamped and in close contact with the intensifying screen. The shooting position 1
1'. Carriage 11 after completion of shooting
returns to the standby position, and the photographed cut film 9 is sent out from the carriage 11 to a feeding mechanism 12 comprising a conveying roller and a feeding guide. The fed cut film 9 is sent to the right end opening provided in the flange-like surface 15 through a path shown by a two-dot chain line. Regardless of whether the table 6 is tilted from the horizontal position to the lower right (normal tilt) or lower left (reverse tilt), as described above, the feed mechanism 1
Since the right end opening of 2 and the left end opening of the film holder 19 in the film direction changing device 16 are made to match, the film 9 sent to the right end opening of the feeding mechanism 12 is placed in the film holder 19. It is delivered from the left end opening.

When the film receiver 19 confirms the delivery of the cut film 9 by a detector (not shown) provided on its bottom plate, the drive device 20 is activated in response to the signal.
The film receiver 19 is rotated counterclockwise in FIG. 3, and the film receiver 19 comes into contact with the contact 23 of the micro switch and stops. At the same time, the side plate of the film holder 19 opens downward, the cut film 9 falls under the action of gravity, and the guide plate 2
4 and 25, and is sent to the automatic developing device 30. After the film 9 has been ejected, the film holder 19 is reversely driven clockwise by the drive device 20 and stops when it comes into contact with the positioning stopper 22. However, even in the stationary state, as described above, the film holder 19 is A clockwise torque is applied from the drive device 20, and the table 6 prepares for receiving the next film 9 in accordance with the changing posture of the table 6.

In this apparatus, the angle of inclination of the film tray 19 in FIG. 3 corresponds to the angle of inclination of the table 6 in FIG. 1, and its size is always kept equal. Therefore, the inclination angle of the film holder 19 in the posture in which the lower surface of the film holder 19 comes into contact with the contactor 23 of the micro switch, that is, the attitude at the time of ejecting the film, is the inclination limit of the film holder 19. The angle limit will be regulated.

FIG. 4 is a sectional view showing a simplified version of the film direction changing device 16.

The connection with the feeding mechanism 12 is similar to the above-mentioned device.
This is done via a flange-like surface 15 and an annular groove 17. 26 has an upper half forming a part of a cylinder whose center is aligned with the rotational axis of the film receiving plate 19, and a lower part formed by a slope forming a guide for dropping the film into the automatic developing device 30. In the film receiving container, 27 is a horizontal threading shaft fixed in a cantilever manner to the wall surface on which the above-mentioned driving device 20 of the film direction changing device 16 for regulating the falling direction of the film is mounted.

In this simple film direction changing device,
When the film 9 fed by the feeding mechanism 12 contacts the through shaft 27 and takes the inclination shown in (A), the inclination of the table 6 corresponding to the inclination of the table 6 is set as the limit in the reverse inclined position, and the film 9 reaches the vertical position shown in (B). The table 6 is between the two limits, with the corresponding vertical inverted posture of the table 6 being the limit in its normal tilted posture.
Although the range of tilted postures taken by the table 6 is limited, within this limited range, the film 9 sent from the feeding mechanism 12 is delivered to the film receiving container 26 without any problem, regardless of the posture of the table 6. film 9
When the film 9 is delivered to the film receiving container 26 horizontally or at an almost horizontal angle, the film 9 is smoothly transferred from its lower end due to the interaction between the center of gravity of the film 9 and the contact point of the film 9 that is in contact with the thread 27. The image is sent to an automatic developing device 30.

As is clear from the above description, in the X-ray fluoroscopic imaging apparatus constructed by connecting the cassette-less X-ray fluoroscopic imaging apparatus and the automatic developing device according to the present invention, the table on which the subject is placed is tilted. Regardless of the situation, each time the X-ray fluoroscopic diagnosis site has been imaged, the cut film is quickly and reliably sent to the automatic developing device via the film feed mechanism and film direction converter, and the film is taken simultaneously with the X-ray fluoroscopic image. It is possible to develop processed cut film, and compared to conventional equipment of this type,
It is possible to further save labor and improve efficiency, and early confirmation of diagnostic information is highly effective in diagnosis.

[Brief explanation of the drawing]

Figure 1 is a front view of the entire device according to the invention of the brush;
Fig. 2 is a side sectional view of the - section in Fig. 1 viewed in the direction of the arrow, Fig. 3 is a sectional view showing details of the film direction changing device, and Fig. 4 is a sectional view of a simple film direction changing device. . 1... Strut, 2... X-ray tube, 5... Frame for raising/lowering, 6... Table, 7... Rotation center of the frame for raising/lowering, 8... Quick photographing device, 9... Cut film , 10... Loading magazine, 11... Carriage, 12... Feeding mechanism, 15... Flange shaped surface, 16... Film direction changing device, 17...
Annular groove, 18...image intensifier,
19... Film holder, 20... Drive device, 22
. . . position stopper, 23 . . . micro switch contact, 24, 25 . . . guide, 26 . . . film receiving container, 27 .

Claims (1)

[Claims] 1. An X-ray fluoroscopic imaging table, a film feeding mechanism that feeds out an exposed cut film along the central axis of the up/down rotation of the fluoroscopic imaging table, and a film feeding mechanism provided adjacent to the film feeding mechanism, A film holder rotates around the central axis of the table's up/down rotation, and the film holder is rotated in the up/down movement of the fluoroscopic imaging table so that the film holder and the feed-out side opening of the film feed mechanism always face each other. a film receiver rotating means for rotating the film receiver in synchronization and rotating the film receiver to a rotation angle position in which the cut film delivered to the film receiver falls under its own weight; and a film receiver provided below the film receiver; An X-ray fluoroscopic imaging device comprising an automatic developing device connected to the film tray via a guide for guiding the cut film that has fallen from the film tray.