JP4360253B2 - X-ray fluoroscopic equipment - Google Patents

Description

  The present invention relates to an X-ray fluoroscopic imaging apparatus including an X-ray fluoroscopic image system that captures and displays X-ray fluoroscopic images and a rapid imaging apparatus for X-ray film imaging.

2. Description of the Related Art An X-ray fluoroscopic apparatus equipped with a cassette-capable rapid radiography apparatus that performs imaging using a cassette that houses one sheet film is a popular existence in clinical medicine. This type of high-speed photographing apparatus is configured so that one cassette is loaded, and when photographing is completed, the cassette is taken out and replaced with an unphotographed cassette to perform the next photographing. For example, in the case of the X-ray fluoroscopic apparatus described in Patent Document 1 below, a film magazine that is not housed in a cassette is configured so that a large number of films are housed in a film magazine and photographed and replaced sequentially. However, the cassette is only changed manually.
JP-A-9-152671

  For this reason, the conventional cassette-capable rapid-shooting apparatus has a problem that it takes time and effort because the cassettes must be manually replaced one by one. In particular, in the case of a remote-operated X-ray fluoroscopic apparatus, the operator has to reciprocate between the operation room and the examination room every time the cassette is replaced, and there is a big problem that it takes time and labor.

  An object of the present invention is to provide an X-ray fluoroscopic imaging apparatus including a rapid imaging apparatus that is improved so as not to require time and effort for cassette replacement.

  In order to achieve the above object, according to the present invention, in an X-ray fluoroscopic imaging apparatus including an X-ray fluoroscopic image system that captures and displays an X-ray fluoroscopic image and a rapid imaging apparatus for X-ray film imaging, The rapid-shooting device includes a cassette magazine mounting opening for storing a plurality of cassettes, a cassette carriage that holds the cassette and moves it to the shooting position, and retreats from the shooting position, and a cassette magazine mounted on the mounting opening. Take out the cassettes one by one and hold them on the cassette carriage, take out the cassettes that have been photographed from the cassette carriage and return them to the cassette magazine, and install the individual cassettes to insert the individual cassettes and hold them on the cassette carriage It is characterized by having a mouth.

  When a plurality of cassettes are stored in a cassette magazine, and the cassette magazine is mounted in the loading slot, the operation arm takes out the cassettes one by one from the cassette magazine and holds them on the cassette carriage. The cassette carriage carries the cassette to the photographing position and retracts the cassette after the photographing is completed. The retracted cassette is taken out of the cassette carriage by the operation arm and returned to the cassette magazine. Thereafter, the next cassette is taken out by the operation arm and is held by the cassette carriage. In this way, the cassette is automatically replaced one by one every time photographing on the cassette is completed, so that it is not necessary for the operator to enter the examination room to replace the cassette, thereby eliminating the trouble of replacement. Therefore, even in the case of upper gastrointestinal tract photography that requires photographing using multiple cassettes, it is not necessary for the operator to enter the laboratory and work, or if there is a need to replace the cassette magazine unit Therefore, the number of operations to enter the examination room can be reduced. Also, cassettes of different sizes can be installed separately in the individual cassette mounting opening, and when they are installed, they are held by the cassette carriage and transported to the shooting position. It is easy to shoot using only one cassette of different sizes.

  Next, an X-ray fluoroscopic apparatus embodying the present invention will be described with reference to the drawings.

  As shown in FIG. 1, an X-ray fluoroscopic apparatus 10 according to the present invention includes a tilting rotary frame 11 that is rotationally driven as indicated by an arrow, and a top plate 12 disposed thereon. A subject 18 lies on the top 12. An X-ray tube 14 is attached to a support frame 13 that rises from the side surface of the up-and-down rotating frame 11, and X-rays are emitted from the X-ray tube 14 toward a subject 18 on the top 12. ing.

  An image intensifier 15 and a TV camera 16 are housed in the up-and-down rotation frame 11. X-rays irradiated from the X-ray tube 14 and transmitted through the subject 18 are stored in the image intensifier 15. It is made to enter. Further, a rapid photographing device 17 is disposed on the front side of the image intensifier 15.

  When the X-ray transmitted through the subject 18 enters the image intensifier 15, an optical image of the X-ray transmission image is output and converted into a TV video signal by the TV camera 16. When this TV video signal is sent to a TV monitor device (not shown), an X-ray fluoroscopic image is displayed. The operator observes this X-ray fluoroscopic image, and performs film photographing by the rapid photographing device 17 at a timing considered necessary. As the X-ray imaging apparatus, a semiconductor flat radiation detector (flat panel detector) that directly converts X-rays into electric signals can be used instead of the combination of the image intensifier 15 and the TV camera 16. It is also possible to use an image signal processing / display system that is not a TV system as described above. As described above, various video systems for capturing and displaying X-ray fluoroscopic images can be used.

  The appearance of the time-lapse photographing device 17 is as shown in FIG. 2, which has a loading port 21 for the cassette magazine 22 on the rear side and a loading port 23 for inserting an individual single-sheet cassette 25 on the front side. A large number of cassettes 24 are stored in the cassette magazine 22, and by loading the cassette magazine 22 into the loading port 21, the large number of cassettes 24 can be loaded together. These cassettes 24 (or cassettes 25) are carried to the photographing center 29 by a cassette carriage 30 described in FIGS. The rapid photographing apparatus 17 is such that the imaging center 29 is located at the center of the X-ray beam from the X-ray tube 14, the loading port 23 side is the front side of FIG. 1, and the loading port 21 side is the back side of FIG. Is attached to the up-and-down rotating frame 11.

  The inside of the rapid photographing apparatus 17 is configured as schematically shown in FIGS. 3 and 4 (FIG. 3 is a schematic view seen from above, and FIG. 4 is a schematic view seen from the right direction in FIG. 2). The operating arm 26 has a grip at the tip, and can be moved on the rail 27 in the direction of the arrow in the figure by a motor and a belt pulley mechanism. When the cassette magazine 22 is mounted in the loading port 21, it is placed on the lifting mechanism 28. The grip portion at the tip of the operation arm 26 grips one cassette 24 in the cassette magazine 22 and pushes it out to the cassette carriage 30 side (left side in the figure).

  The cassette carriage 30 includes a carriage 31, which is movable along a rail 32. By a drive mechanism 33 such as a motor and a belt pulley, the cassette 31 is moved from a position on the cassette magazine 22 side to a photographing center position 29 and a loading port. Up to 25, it can be moved in the left-right direction in the figure as indicated by arrows. A rail 35 is provided on the carriage 31, and a pair of sandwiching plates 34, 34 are supported on the rail 35 so as to be movable. These clamping plates 34, 34 are moved as indicated by arrows by a motor and a belt pulley mechanism, respectively.

  The sandwiching plates 34 are substantially U-shaped. When one cassette 24 is pushed out by the operation arm 26, the end of the cassette 24 is inserted into the U-shaped groove of the sandwiching plates 34, 34, and the sandwiching plates 34, 34 move to sandwich the cassette 24. Hold on. In this state, the carriage 31 moves, the cassette 24 is positioned at the imaging center 29, and X-ray film imaging is performed. After the photographing is completed, the cassette carriage 30 is returned to the original delivery position. At this time, the operation arm 26 extends, and the photographed cassette 24 on the cassette carriage 30 is grasped by the grasping portion at the tip, and is pulled out from the cassette carriage 30 and is Return to the magazine 22.

  When the photographed cassette 24 is again stored in the cassette magazine 22, the elevating mechanism 28 operates to lower the cassette magazine 22 one step downward, and the second-stage cassette 24 from the bottom is the holding plate 34 of the cassette carriage 30. Becomes the same height. In this state, an operation by the operation arm 26 is performed on the cassette 24 in the second stage from the bottom, and transfer to the cassette carriage 30, movement to the shooting position, and return after shooting are performed in the same manner as described above. . The cassette magazine 22 is sequentially lowered by the elevating mechanism 28, and the same operation is performed on each of the multiple cassettes 24 stored in the cassette magazine 22. In this way, photographing can be performed while sequentially replacing a number of cassettes 24 stored in the cassette magazine 22.

  When a cassette other than the cassette 24 stored in the cassette magazine 22 is used, the loading port 23 on the front side is used. A single-sheet cassette 25 is manually inserted into the loading port 23. Then, a detection switch (not shown) detects this insertion, and the cassette carriage 30 moves to the loading port 23, and the inserted cassette 25 is sandwiched and held by the sandwiching plates 34 and 34. Then, the carriage 31 moves backward to position the cassette 25 at the imaging center 29, and after X-ray imaging is completed, the cassette 25 is moved again to the loading port 23 so that the imaged cassette 25 can be manually taken out from the loading port 23. To.

  Note that when the film stored in the cassettes 24 and 25 is divided into two parts in the upper and lower directions or when the film is divided into four parts in the upper, lower, left, and right directions, the holding plates 34 and 34 hold the cassettes 24 and 25 therebetween. The position is moved with respect to the imaging center 29 as it is.

  The mechanism for moving the operation arm 26 forward and backward, the mechanism for moving the carriage 31 of the cassette carriage 30 and the mechanism for moving the clamping plates 34 and 34 have been described above as using appropriate motors and belt pulley mechanisms. Other suitable drive mechanisms such as motors and rack and pinion mechanisms can be used. Further, the lifting mechanism 28 for placing the cassette magazine 22 and moving it up and down can also be configured by combining a motor and an appropriate mechanical mechanism. In order to sequentially operate these mechanisms as described above, a switch for position detection is provided in various places, and a control circuit for operating each drive mechanism in accordance with the detection output is provided.

  In the radiographic apparatus provided in the X-ray fluoroscopic apparatus according to the present invention, if a large number of cassettes are stored in the cassette magazine and installed, X-ray imaging can be performed by sequentially replacing them. Therefore, it is possible to easily perform the operation while saving the operator's trouble, and it is possible to easily attach the cassettes one by one, so that other sizes of cassettes can be easily handled. Such a convenient X-ray fluoroscopic apparatus is extremely useful.

The schematic diagram seen from the front which shows one Example of this invention. The perspective view which shows typically the external appearance of the rapid-shooting imaging device of the Example. The schematic diagram which looked at the internal mechanism of the same speed photography apparatus from the top. The schematic diagram which looked at the internal mechanism of the same speed shooting imaging device from the side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 X-ray fluoroscopic imaging | photography apparatus 11 Vertical rotation frame 12 Top plate 13 Support frame 14 X-ray tube 15 Image intensifier 16 TV camera 17 Time-lapse imaging device 18 Subject 21 Cassette magazine loading port 22 Cassette magazine 23 Individual cassette loading port 24 Cassette 25 Single-shooting cassette 26 Operating arm 27 Rail 28 Elevating mechanism 30 Cassette carriage 31 Carriage 32 Rail 33 Drive mechanism 34 Nipping plate 35 Rail

Claims (1)

  An X-ray fluoroscopic imaging apparatus comprising an X-ray fluoroscopic image system for capturing and displaying X-ray fluoroscopic images and a rapid radiography apparatus for X-ray film radiography, wherein the rapid radiography apparatus includes a cassette that houses a plurality of cassettes. A magazine mounting opening, a cassette carriage that holds the cassette and moves it to the shooting position and retreats from the shooting position, and takes out the cassette one by one from the cassette magazine mounted in the mounting opening and holds the cassette carriage on the cassette carriage. An X-ray comprising an operation arm for taking a photographed cassette from the cassette carriage and returning it to the cassette magazine, and an individual cassette mounting opening for inserting the individual cassette so that the cassette carriage holds it. Perspective imaging device.

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