KR930007642B1 - X-ray fluoroscopic apparatus - Google Patents

Abstract

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Description

X-ray fluoroscopy device

1 is a plan view of an X-ray perspective imaging apparatus 1 according to an embodiment of the present invention.

2 is an exploded perspective view for explaining the mounting structure of the cassette holder 3 for leader photographing.

3 is a partially enlarged view of the X-ray perspective imaging apparatus 1 as seen from the cut line III-III of FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG. 1;

5 is a partial plan view of the X-ray perspective imaging apparatus 1 in which the cassette holder is accommodated in the side of the image tube.

6 is a side view showing the configuration of a conventional X-ray perspective imaging apparatus.

7 and 8 are plan views showing the structure of the reader photographing method by the apparatus of FIG.

* Explanation of symbols for main parts of the drawings

1: X-ray fluoroscopy apparatus 2: X-ray tube

5: support arm 9: support frame

10: rotating member 11a, 11b, 12a, 12b: hinge

14A, 14B: Lock mechanism 15a, 15b: Rock pin

18a, 18b, 19a, 19b: lock guide 21: lock mechanism.

The present invention relates to an X-ray perspective imaging apparatus that performs chest imaging (leader imaging) using an X-ray tube of an X-ray perspective imaging apparatus, particularly an X-ray perspective imaging apparatus.

The X-ray fluoroscopy apparatus is a device which enables X-ray fluoroscopy by a television system and photographing by a film system, and has a table main body having a top plate 61 supporting a subject as shown in FIG. An X-ray tube 65 having a collimator 64 on the base plate 61 is rotatably supported on the base 63 and on the upper side of the top plate 61 (right side in the drawing). On the lower side of the top plate 61 (the left side in the drawing), the image tube 66 as the water receiving mechanism is made to coincide with the center of the X-ray radiation axis O from the X-ray tube 65 and the input surface 66 'of the image tube 66. It is attached to the table main body 62 via the support arm 67, and generally the X-ray tube 65 and the image tube 66 are integrally shown by the arrow in the longitudinal axis direction of the top plate 61 (in the figure). It is configured to move in one up and down direction. Reference numeral 68 denotes a television camera connected to the output of the image tube 66, and 69 is a rapid fire mechanism that moves from the position shown in the photographing to the front of the image tube 66.

7 and 8 show a conventional method in the case of leader photographing using the X-ray tube 65 of the X-ray perspective imaging apparatus having the above-described configuration.

7 shows the use of a reader photographing table in a separate position. The X-ray tube 65 held on the support arm 67 is rotated counterclockwise to a position indicated by a solid line, and the X-ray radiation axis at that position is shown. The leader photographing table 71 holding the cassette 70 containing the photographing film on O 'is arranged to perform leader photographing. 8 shows a cassette holder 72 for accommodating a cassette 70 containing a film for photographing at the front surface of the top plate 61 and at a position facing the X-ray tube 65 via a mounting member 73. It attaches detachably to the support arm 67, and moves the X-ray tube 65 from the dotted line position to the position suitable for reader photography indicated by the solid line so that photography may be performed. (Japanese Laboratories 54-41664 number). In this case, the center of the cassette holder and the X-ray radial axis O coincide. In the figure, P is a subject.

In the seventh configuration described above, since the X-ray tube 65 and the cassette 70 of the X-ray perspective imaging apparatus are provided independently from each other, the center of the X-ray radiation axis O 'and the cassette 70 are aligned, that is, It is extremely difficult to position the cassette 70 at right angles to the X-ray radiation axis O ', and the positions of the X-ray tube 65 and the cassette 70 must be adjusted according to the size and posture of the subject P. Because of the necessity of the intimate operation, it takes a long time to center the X-ray radiation axis O 'and the cassette 70.

In addition, when the reader is taken, the installation space of the reader shooting table 71 at the separate position is required, and when the reader is not taken, the storage space of the reader shooting table 70 is separately required, and the shooting room is effective. There is a problem that it is not available.

In the configuration of FIG. 8, since the center of the cassette 70 mounted on the support arm 67 and the X-ray radiation axis O always coincide with each other, there is no problem of alignment as shown in FIG. 7, but when reader photography is not performed There is a problem that a space for storing the cassette holder 72 is required.

In view of the above, the present invention does not require the alignment between the X-ray radiation axis and the center of the cassette, and when reader photography is unnecessary, the X-ray perspective allows the cassette holder to accommodate the film for film to be stored in the table main body. An object of the present invention is to provide a photographing apparatus.

According to the present invention, an X-ray tube and a water phase mechanism are provided to face each other with a top plate interposed therebetween, and the X-ray tube is rotated from a first position facing the water phase mechanism to a second position at the time of reader photographing, so that the X-ray radiation is prevented. In X-ray perspective imaging, in which a bevel axis can be changed, a cassette holder for accommodating a film for filming is provided, the cassette holder is mounted on the receiving mechanism via a holding means, and the cassette holder is inserted into its X-ray. It is characterized by the fact that the bevel is folded into a leader photographing position orthogonal to the X-ray radiation axis at the second position, and the X-ray incidence plane is stored at a storage position located at the side of the water mechanism.

The holding means rotatably holds the cassette holder at one end, and the other end is a rotating member connected to the water mechanism.

When the X-ray tube is in the first position, the X-ray radiating axis therefrom coincides with the center of the water surface of the water receiving mechanism, and perspective imaging by the X-ray perspective imaging apparatus can be performed. At this time, since the cassette holder is unnecessary, the X-ray incidence surface is folded to a storage position located on the side of the water-receiving mechanism.

The reader is photographed by rotating the X-ray tube to the second position and unfolding the cassette from the folded storage position to the leader photographing position.

Since the cassette holder is mounted on the receiving mechanism opposite to the X-ray tube via the holding means, the cassette holder is deployed at the leader photographing position so that the X-ray radiating axis of the second position coincides with the cassette center, and the X-ray incidence surface thereof. The cassette holder is positioned so as to be orthogonal to this X-ray radiation axis.

FIG. 1 is a plan view of an X-ray perspective imaging apparatus 1 according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view for explaining a mounting structure of a cassette holder for leader photographing, and FIG. 3 is a cut-away line III- of FIG. A partially enlarged view of the X-ray perspective imaging apparatus 1 seen in III. Hereinafter, the structure of the X-ray perspective imaging apparatus 1 is demonstrated with reference to FIGS.

(2) is an X-ray tube with a collimator (6) mounted at the tip of a support arm (5) supported by a table body (4) with a top plate (3), the X-ray tube (2) being two points in the figure The support arm 5 is rotatably held at the first position indicated by the dashed line and the second position indicated by the solid line rotated θ in the counterclockwise direction.

(7) is located below the top plate 3, and the center of the X-ray radiation axis O and the water surface 7 'when the X-ray tube 2 is set at the first position coincides, and the X-ray tube 2 ) Is fixed to the table body (4) to face the body (8), (8) is a TV camera fixed to the output of the image tube (7), (9) the table so as to surround the image tube (7) Each ordinary support frame 10 fixed to the main body 4 is a rotation member fixed to the support frame 9 via hinges 11a and 11b. 10 is composed of a top plate (10 ₃ ) connecting both side plates (10 ₁ ), (10 ₂ ) and side plates (10 ₁ ) and (10 ₂ ), the hinge (11a) at one end of the top plate (10 ₃ ) And 11b are fixed, and the cassette holder 14 holding the cassette 13 for accommodating the film for photographing through the hinges 12a and 12b is fixed at the other end thereof. In addition, the cassette 13 is inserted from the side of the cassette holder 14 as shown in FIG. 1 and is fixed at a predetermined position in the cassette holder 14. In addition, the upper portion of the cassette holder 14 is provided with a jaw support 14 ₁ of the subject P.

(14 _A), (14 _B) are kept expanded in riyi more photographing position facing the cassette holder 14 is an X-ray tube rotated to the retracted stowed position and a second position of the side of the image tube 7 For this purpose, the locking mechanism defines the rotational position of the rotational member 10 with respect to the support frame 9, the configuration of which will be described in FIG. 3 and FIG. It also describes only the configuration of one since the lock mechanism (14 _A) and (14 _B) has the same configuration.

15a is a lock pin with a handle 16a fixed to the other end of which the tip is tapered, and is inserted into an insertion hole formed in the side plate 10 ₁ of the rotation member 10, and the fourth spring 17 Also joined downwards.

(18a) and (19a) are lock guides formed in the periphery and having a concave portion 20 in which a tapered portion of the lock pin 15a is inserted in the center portion, and fixed to the support frame 9, The lock mechanism consists of lock pins and lock guides.

Further, the lock guides 18a and 19a are arranged on the circumferential trajectory drawn by the lock pin 15a when the rotating member 10 on the support frame 9 rotates around the central axis of the hinges 11a and 11b. In addition, the cassette holder 14 is fixed at a position defining the rotational position of the rotational member 10 in order to hold the cassette holder 14 at two positions of the storage position and the deployment position. In addition, the lock guides 18a and 18b, in combination with the lock pins 15a and 15b, define the position of the pivot member 10 at the time of deployment of the cassette holder 14, and the lock guides 19a and (b). 19b, in combination with the lock pins 15a and 15b, defines the position of the pivot member 10 when the cassette holder 14 is stored.

Next, a case where reader photography is performed by the X-ray perspective imaging apparatus having the above-described configuration will be described. Also, the lock pins 15a and 15b are inserted into the recesses 20 of the lock guides 19a and 19b, and the cassette holder 14 is folded in the side of the image tube 7 in the state of storage in FIG. Shall be in.

Pull up the handles 16a, 16b against the springs 17, and pull out the lock pins 15a, 15b from the recesses 20 of the lock guides 19a, 19b to support frame 9 Rotation pins 15a and 15b are rotated about the hinges 11a and 11b in the counterclockwise direction indicated by the arrows 5a and 5b, and the recesses 20 of the lock guides 18a and 18b are rotated. ), The rotation member 10 is locked at a position for holding the cassette holder 14 at the leader photographing position. In this state, when the cassette holder 13 is rotated in the clockwise direction indicated by arrow 도 of FIG. 5 with respect to the hinges 12a and 12b, the cassette holder 14 as shown in FIG. It is further developed at the shooting position. 21 is a locking mechanism for hanging the cassette holder 14 on the pivot member 10 in the unfolded state as shown in FIG.

Next, the X-ray tube 2 held on the supporting arm 5 is half-turned from the first position indicated by the dashed-dotted line in FIG. 1 so that the X-ray radiation axis becomes O ', to the second position indicated by the solid line. By rotating in a clockwise direction, X-rays are irradiated from the X-ray tube 2, chest imaging of the subject P positioned on the front surface of the cassette holder 14 can be performed.

In this case, the cassette holder 14 has the X-ray radiation axis O and the light receiving surface of the image tube 7 when the X-ray tube 2 is in the first position indicated by the double-dotted line in FIG. 7 ') is connected to the image tube 7 which is held so as to coincide with the center of the image tube 7, via the rotating member 10, so that the X-ray direction as shown in FIG. Coincident with the center of the bent axis O 'and the cassette holder 14, i.e., the cassette 13, which is devastated therein, and the X-ray incident surface 14' of the X-ray radiation axis O 'and the cassette holder 14 Orthogonal.

On the other hand, in order to perform perspective imaging by the X-ray perspective imaging apparatus from the leader imaging shown in FIG. 1, the cassette holder 14 and the rotating member 10 are rotated in the opposite direction to the above, and the cassette holder 14 Fold into the storage state shown in FIG.

That is, by operating the handles 16a and 16b, the lock pins 15a and 15b are pulled out of the recesses 20 of the lock guides 18a and 18b, and the pivoting member 10 is moved in the first direction. When rotated clockwise as indicated by the arrow ㉰, the lock pins 15a and 15b are inserted into the recesses of the lock guides 19a and 19b, and the rotating member 10 moves the cassette holder 14 at a misaligned position. It is locked in the position to keep on.

In this state, when the lock by the locking mechanism 21 is released and the cassette holder 14 is rotated in the counterclockwise direction indicated by the arrow 중 in the first direction until it contacts the top plate 10 ₃ , the cassette holder ( 14, the fixed magnet 22 and the magnet 23 fixed to the side of the support frame 9 are attracted, and the cassette holder 14 has its entrance face 14 'positioned at the side of the image tube 7 It is stored in the state shown in FIG.

Next, the X-ray tube 2 is rotated θ in the clockwise direction at the second position indicated by the solid line in FIG. 1, and the X-ray tube 2 is positioned at the first position indicated by the double-dotted line in which the X-ray radiation axis becomes O. Perspective photographing by the photographing apparatus can be performed.

In addition, although the rotating member 10 was attached to the support frame 9 via the hinges 11a and 11b in the Example, it is also possible to mount it directly to the image tube 7.

In addition, the support arm 5 of the X-ray perspective imaging apparatus 1 can be displaced in the longitudinal direction (the direction perpendicular to the surface of Fig. 1) of the top plate 3 by a driving device (not shown). It is also possible to rotate the top plate 3 from any horizontal position to any position of the vertical position. In this case, in the state where the cassette holder 14 is deployed at the leader photographing position shown in FIG. 1, it is dangerous to displace or rotate the top plate 3, so that the push switch is placed near the magnet 23. The top plate 3 is displaced or displaced only when it is installed and pressed by the cassette holder 14, that is, only when the cassette holder 14 is stored on the side of the image tube 7 as shown in FIG. Allowing the drive to rotate improves the safety of the device.

As described above, according to the present invention, since the cassette holder for leader photographing is mounted on the water receiving mechanism opposite to the X-ray tube with the top plate interposed so that the cassette holder can be folded by the holding means, the cassette holder is developed quickly. Leader shooting is possible, and the alignment between the X-ray radiography axis and the cassette center at that time is unnecessary.

In addition, when the reader is not taken, the cassette holder can be stored in the table body. Therefore, the storage space of the cassette holder is not necessary, and since the top plate is opened at the time of storage, perspective imaging is performed by the receiver. Improved operation when

Since the cassette holder is held by the holding mechanism by the holding means, the lower side of the cassette holder is open at the time of leader photographing, so that, for example, the physically handicapped person can be photographed while in a wheelchair.

Claims (1)

An X-ray tube (2) and a water receiving mechanism (7) provided to face each other with the top plate (3) interposed therebetween, and the X-ray tube (2) whose X-ray radiation axis (O) is the water surface (7) of the water receiving mechanism (7). An X-ray perspective imaging apparatus which is capable of rotating at a first position orthogonal to ') and a second position at the time of reader shooting, the cassette holder 14 holding a cassette 13 for accommodating the film for shooting. The X-ray incidence surface 14 'of the cassette holder and the X-ray incidence surface 14' at which the reader photographing position is orthogonal to the X-ray radiation axis O 'from the second rotational position. And a holding means for foldably holding in a storage position located on the side of the mechanism (7), the holding means rotatably holding the cassette holder (14) at one end, and the other end of the receiving mechanism ( 7) X-ray perspective imaging apparatus, characterized in that the rotating member 10 is connected directly or indirectly rotatable.

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