JPH0232248Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field This invention relates to an X-ray fluoroscopic imaging table, and particularly relates to an overtube type X-ray fluoroscopic imaging table.

(B) Prior Art Conventionally, the cross-sectional shape of the bed of an overtube type X-ray fluoroscopic imaging table, that is, the top plate on which a subject lies, has generally been concave. However, from a usage standpoint, a concave top plate is inconvenient, and a flat top plate is desired. However, the reason why the top plate is made concave is to ensure the rigidity of the top plate and space for its sliding mechanism, and to minimize the distance between the subject and the image receiving equipment located behind the top plate. This is to obtain a clear X-ray photograph with less defocus (unsharpness) by bringing the object closer and reducing the geometric magnification.
Conventionally, it was difficult to construct a structure using a flat top plate.

To explain a typical conventional overtube type X-ray fluoroscopic imaging table, as shown in FIG. A camera section 14, a snapshot section 15, and a film magazine section 16 are provided. As shown in FIG. 2, the table 12 has a main frame 21 that can be raised and rotated, and a mechanism that slides the subject 11 lying on the top plate 29 vertically and horizontally with respect to the main frame 21. have In this specification, the concepts of up, down, left, right, front and back are used based on the subject, with the top being the direction of the subject's head, the bottom being the direction of the legs, and the left and right being the subject lying on his/her back. It shall be of the time. Left and right moving frames 23 and 24 that move left and right are attached to the main frame 21, and vertically moving rails 25 and 26 are fixed between these left and right moving frames 23 and 24. This vertical movement rail 25, 2
A vertically movable frame 27 is placed on top of the vertically movable frame 27, and the vertically movable frame 27 is guided by vertically moving rails 25 and 26 so as to be able to move up and down. A top plate 29 is fixed to this vertically movable frame 27 by presser rails 28, 28. The quick-shot photographing section 15 is equipped with a carriage section 32 that brings the film 31 into close contact with an intensifying screen, but in order to take pictures in left and right directions, it is necessary to move the carriage section 32 left and right as shown at 32a and 32b. Because there is, there is a quick photo shooting section 1
5 has a large width in the left and right direction. Note that the panel 17 on the operator side is attached to the main frame 21.

Here, since the vertical movement rails 25 and 26 constitute a part of a mechanism for supporting the subject 11 on the top plate 29 and sliding it largely, a drive mechanism is installed inside thereof. It requires a certain cross-sectional area in order to be built-in and to ensure the necessary rigidity. In addition, since the quick-shooting section 15 has a large width in the left and right direction as described above, when the top plate 29 is moved left and right, the vertical movement rail 2 with a large cross-sectional area
It is necessary to arrange the rails 25 and 26 for vertical movement in front so that the rails 5 and 26 do not collide with the snapshot photographing section 15. On the other hand, in order to obtain a sharp X-ray photograph, it is necessary to reduce the distance between the surface of the top plate 29 and the film 31. Therefore, in the conventional structure, the top plate 29 inevitably has a concave cross-sectional shape.

(c) Purpose The purpose of this invention is to provide an improved X-ray fluoroscopy table that is equipped with a flat top plate that is easy to use.

(d) Structure This invention narrows the horizontal width of the quick-shooting section by providing a curved path in the carriage section of the quick-shooting section adjacent to the intensifying screen crimping section for shifting the film during split shooting. , the top plate is made flat by arranging the rail on the operator's side of the vertical movement rail on the operator's side of the snapshot photographing section.

(e) Example In FIG. 3, an X-ray tube section 43 is located in front of a table 42 on which a subject 41 lies, and an X-ray tube section 43 is located at the rear.
A TV imaging section 44, a snapshot section 45, and a film magazine section 46 are provided. The table 42 is
As shown in FIG. 4, it has a main frame 51 that can be raised and rotated, and a mechanism that slides the subject 41 lying on a top plate 59 vertically and horizontally relative to the main frame 51. That is, horizontal movement frames 53 and 54 that move left and right are attached to the main frame 51, and vertical movement rails 55,
56 is fixed. This vertical movement rail 5
A vertically movable frame 57 is mounted on the vertically movable frames 5 and 56, and the vertically movable frame 57 is guided by the vertically movable rails 55 and 56 so as to be able to move up and down. This vertically movable frame 57 has a top plate 59 and a presser rail 58,
58. The carriage section 62 of the quick-shot photographing section 45 is equipped with an intensifying screen pressure bonding section 63 corresponding to the maximum film size to be used.
A moving mechanism is provided, and a bending path 64 is provided adjacent to the intensifying screen press-bonding section 63 for bending the film 61 and shifting the film 61 during divided photographing. With this structure, the width of the quick-shot photographing section 45 on the operator side can be minimized. As a result, the dimensions of the main frame 51 housing the quick-shot photographing section 45 on the operator's side can be reduced. In this way, a space is created on the operator's side of the main frame 51, and a vertically moving rail 55 is arranged in this space at the same height as the snapshot photographing section 45. Since the other vertically moving rail 56 does not impede operability, it is placed in front of the quick-shooting section 45 as in the conventional case, and the top plate 59 is not constructed to ride on this rail 56. Then, the vertical movement frame 57 moves along with the horizontal movement frames 53 and 54 to 57a and 57 in FIG.
By moving left and right as shown in b, the top plate 59 can be made completely flat while maintaining the same rigidity as the conventional one. In addition, in this case, the panel 47 is vertically movable frame 57
It is attached to and moves horizontally and vertically together with the vertically movable frame 57. Since the dimensions of the quick-shooting section 45 are reduced, the distance from the X-ray center to the end face on the operator side hardly increases compared to the conventional case even when using a large-angle film when there is no left-right movement. .

To explain split shooting, when the shooting area is narrowed in the horizontal direction as shown in FIG.
If the film 61a is curved and shifted to the left in the center of the three parts of 1, it can be imaged on the right side, and if the film 61b is shifted to the right, it can be imaged on the left side.

In the above embodiment, only the vertical movement rail 55 on the operator's side is set at the same height as the quick-shot photographing section 45, but a film bending path is also provided on the other side of the carriage section 62 so that the quick-shot photographing section 45 can be moved up and down. The width in the left and right direction is further narrowed, and the other vertical movement rail 56
Similarly, the height can be set to be the same as that of the snapshot photographing section 45.

(f) Effects Overtube type X-ray fluoroscopic imaging tables are easier to approach the subject than undertube types, so they are often used not only for gastrointestinal examinations but also for general purposes. The overtube X-ray fluoroscopic imaging table based on this invention allows the top plate to be made flat without increasing the distance between the patient and the image receiving surface, improving operability and further expanding the range of applications. can do. It is particularly suitable for orthopedic applications, catheter applications, etc., and makes it easier for patients to get on and off the stretcher.
It can also be used as a side photographing table when combined with another device.

[Brief explanation of the drawing]

Figure 1 is a front view of the conventional example, Figure 2 is A of Figure 1.
-A sectional view, FIG. 3 is a front view of an embodiment of this invention, FIG. 4 is a BB line sectional view of FIG. 3, and FIG. FIG. 6 is a plan view of a film for explaining divided photographing. 11,41...Subject, 12,42...Table, 13,43...X-ray tube section, 14,44...X
Line TV imaging section, 15, 45...Snapshot imaging section, 1
6,46...Film magazine section, 21,51...
...Main frame, 23, 24, 53, 54...Left and right movement frame,
25, 26, 55, 56...Rail for vertical movement,
27,57...Vertical moving frame, 29,59...Top plate,
31, 61...Film, 32, 62...Carriage part, 63...Intensifying screen pressure bonding part, 64...Film curved path.

Claims (1)

[Scope of utility model registration request] It has a table with a top plate on which a subject lies, an X-ray tube section disposed in front of the subject, and a snapshot imaging section disposed in the table behind the subject. , the table has a horizontal movement frame that moves left and right, a vertical movement rail that is attached to the left and right movement frame and moves left and right together with the left and right movement frame, and a table that moves up and down while being guided by this vertical movement rail, In an X-ray fluoroscopy table equipped with a vertically movable frame to which the top plate is attached,
In the carriage section of the above-mentioned quick-shot photographing section, a curved path is provided adjacent to the intensifying screen crimping section to shift the film during divided shooting, thereby narrowing the width of the quick-shot photographing section in the horizontal direction. An X-ray system characterized in that a rail on the operator's side is arranged on the operator's side of the above-mentioned quick-photographing section, and this rail and the other rail guide a vertically movable frame to which a reflat top plate is attached. Fluoroscopic photography stand.