JPS59192355A - X-ray photogaphing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention is used for circulatory system X-suit diagnosis.
The ability to combine two single devices for both direct and indirect imaging of the brain, abdomen, lower extremity angiography, etc. allows for rapid imaging.
This relates to an X-ray imaging device that enables a complex system of diagnosis of the so-called circulatory system X#, which can perform two tests. [Technical background of the invention and its problems] Diagnosis of the circulatory system, For example, angiography examination of the brain, abdomen, etc. i)
In order to improve the diagnostic ability, X-ray fluoroscopy and imaging using the C-2 angiography method are performed.

Conventionally, as shown in FIG. 1, X&I fluoroscopy is a device of an I/T'V chain attached to an I, I trolley 1C and two having an X-ray image detection device (hereinafter referred to as 1.I). 2C
2. The X-ray tube 6b attached to the C2 corresponding X-ray gland blindness/protection device 3at was placed opposite to perform fluoroscopy of the subject B located ζ2 therebetween. Also, in the opposite case, I,
An I/TV chain was attached to the holding device C2 and placed under the top plate 5 of the catheter bed 4 for fluoroscopy. Then, after confirming the insertion site of the catheter for injecting the contrast medium through fluoroscopy, as shown in Fig. 2 and Fig. The X-ray tube 6b attached to the X-ray tube holding device 3ac corresponding to the film changer 9 attached to the film changer 8 of changer 9c
Two direct shots were taken.

However, if this type of camera is used for front and side perspective photography, the I, I trolley 1, front film changer trolley 7, and side film changer trolley 8
This requires six carts, which makes the floor very complicated and difficult to operate. In addition, in order to shift from fluoroscopy to direct imaging, it is necessary to replace the trolley, and a lot of time is required for positioning.1. Very C for ω people
It was a bittersweet experience. Furthermore, there are many problems such as a decrease in operability and diagnostic ability due to the combination of individual devices.

[Object of the invention] This invention was made based on the above circumstances, and
The wire tube holding device C2 and I/Film changer integrated holding device C2 greatly improves the operability, speed, and diagnostic ability of positioning, etc. What's more, 4m [High quality product at low price C2X7 Urine]
The object of the present invention is to provide a four-reflection device.

[Summary of the invention]

This invention consists of a pair of moving rods that move along the guide rail f2 and are split into two. 1IlII frame, a holding member which is extendable and retractable C divided into two parts on these movable frames, and the tip of one of the pair of holding parts H (two supported X? The distal end of the holding member (2) has a pair of arms that can be freely rotated in two horizontal directions and can freely rotate in two directions (C);
Arm C of the prostitute: attached and said) (η, 1ll
The object image is that an X-ray detection device and a film changer are installed in a complicated manner.

[Embodiments of the invention]

This invention will be explained with reference to actual pongee examples shown in the drawings.

FIG. 4 is a diagram showing an X-ray tube according to an embodiment of the present invention, and the X-ray tube and I are facing each other in the top direction. FIG. 5 is a diagram showing the X-ray tube and the film changer 6 is a front view of FIG. 4 seen from the X-ray tube side, FIG. 7 is a side view of the same, and FIGS. 8 and 9 are balance machine 4fJ and the front view. FIG. 7 is a schematic front view and a side view of the photographing switching mechanism in the side direction. Figures 4 and 56
=, the ceiling 10≦2 is provided with a guide rail 11 via an anchor bolt (not shown). The lower direction C2 of this guide rail 11 is in the direction intersecting with this [a guide rail 16 equipped with rollers 12 is installed, and this guide rail 13 runs along the guide rail 11≦2 in the direction A'iJ in the drawing C2. The guide rail 16 is equipped with a pair of movable frames 14 and 15 that can move back and forth (in the direction perpendicular to the plane of the paper).
6, 17, and a movable pedestal 14.15
The movable frames 14 and 15 are configured to be able to reciprocate in the horizontal direction (in the direction of arrow A and the direction of arrow B) along the guide rails 13 (2).
Support members, such as multiple pipes 18, 19, which are extendable and retractable in the directions indicated by the arrows and the directions indicated by the arrows, are suspended, respectively.

These multiple vibrators 18 and 19 can be raised freely.
2. The spring balance system C is constructed using suitable known means such as a balance spring (not shown). An X-ray tube holder (not shown) is fixed to the tip end 18a+= of the multiple pipe 1B, and this
A supporting fork 2o is attached to the holder for the line f". This supporting fork 20+2 is
#W21 is supported and the X-ray tube 21 is configured so that it can rotate in the direction of arrow E. Eye 11
The X-axis tube 2.1 is provided with an X-axis movable aperture 22 at its irradiation port.

On the other hand, a flange 23 is attached to the tip end 19aC of the multiplex vibrator 19, as shown in detail in FIGS. 6 and 7, and is rotatable in the direction of the arrow G.
6≦2 is the direction of the arrow F and the direction of the arrow H. A box 26 is fixed within the entire structure with four balanced arms 24 and 25.

The tip of this balanced arm 24 has 1. I27
is attached freely rotatable f2 in direction C of arrow ■.

(In other words, when the arm 24 rotates in the direction of arrow F (290°, I, I 27 rotates in the direction of arrow 1, C290'). At the tip of the balanced arm 25 is a film changer 28. It is attached so that it can freely rotate two times in the direction of the arrow J (that is, when the arm 25 rotates in the direction of the arrow H (f290') as in I and I27, the film changer 28 rotates in the direction of the arrow J [291J'). ).Therefore, in Fig. 4, the X-ray tube 21 and I
, I27≦2 enables front and side perspective photography,
In addition, in FIG. 5C2, it becomes possible to directly photograph the front and the center using the X-ray tube 21 and film changer 28.
, FIG. 5 shows box 26 in FIG. 4 in the direction of arrow G C218.
It has been rotated by 0 degrees, and the other parts are the same as those in Figure 4. In the drawing, numeral 4 is a catheter bed, 5 is a top plate on which multiple specimens 6 are placed, 29 is a number holder for I and I 27, and 60 is an attachment holder for the film changer 28. Said arm 24, 25, box 26, flange 2
6 and a balance mechanism, etc., constitute a position adjustment mechanism.

Next f2, as shown in Figures 6 and 7 (-Box 2
When 6 is rotated 180'' in the direction of arrow G, the center of 1.I 27 and the center of the film of film changer 28 are aligned.In other words, from the center of multiplex vibrator 19 to the center of I, The distance and the distance to the center of the film of the film changer 28 are configured to be the same.

Furthermore, Fig. 8 and Fig. 9 are shown in Fig. 8 and 9. Inside C2 of the balance mechanism storage box 26 is a gear 32 that meshes with the rack 31.
is a shaft 35 + Niki 3 that can rotate freely via bearings 33 and 34.
The gear 37 is fixed at the lower end of the shaft 35. The rack 51 is a box 26
(= The roller 40 is movable in the direction of the arrow on the fixed guide 68 (g2) via the two shafts 69.IJ
'J S Self 61's single rule is rack 61 and integral C
A two-piece shaft 41 is provided, and a spring 42 (for example, a disc spring, etc.) is mounted on the shaft 41+2. Further, a bearing 46 fixed to the main body of the box 26 is attached to the end face of the shaft 41, so that the shaft 41 can freely reciprocate.

Now, when arm 25 rotates in the direction of arrow H, arm 25
The gear 37 meshing with the gear 44 fixed to the gear rotates twice in the direction of the arrow M, and the gear 62 on the same axis C also rotates twice in the same direction C, and the rack 61 moves in the direction of the arrow. This rack 6
1 moves in direction C2 in the direction of the arrow, the spring 42 is compressed from the bearing 46, and energy is stored.
Two rotational forces act on the arm 25 on the opposite side C in the direction of arrow H.

Next, the arm 25 is connected to the box 26 + two fixed shafts 45
The arm 25 is held by two fitted bearings 46 and 47, and the shaft 45 (- indicates that the chain wheel 48 is fixed to the key 49). 50
, 51 is rotatably attached to the shaft 52, and a chain wheel 56 is fixed to the key 54C.
5 is connected in a loop shape, and the arm 2
5 in the direction of arrow H (when rotated twice, the chain wheel 53 moves in the direction of arrow J
Since the film changer mounting and holding A60 is fixed to the shaft 52 (two rotations), it will rotate in the direction of the arrow J≦two rotations in the same way as the shaft 56.

Therefore, for example, the arm 25 is now C2θ as shown in the figure.
If the chain wheel 56 rotates by 20 times, the Y plane of the film changer mounting holder 60 will not be horizontal ζ. Therefore, if the radius of the fA cabinet 48 is R and the radius of the chain wheel 56 is r, The condition for keeping the C horizontal when the Y and C of the holder are rotated by θ must satisfy the following equation (1).

R = 2 r... (1) Next g2, when determining the conditional expression for the balance by the spring 42, the rotation center of the arm 25 - the arm 25
The distance between the center of gravity G1 of the holder 60 and the center of gravity 02 of the holder 60 and the center of gravity 02 of the film changer 28 is 12. Let MM of the arm 25 be Wl, and the weight i of the holder 60 and the film changer 28 be W2. Further, the pinch circle radius of the gear 62 meshing with the rack 61 is r2, and the pitch circle radius of the gear 44 fixed to the arm 25 is r3.

Next C2.

When the compressed length of the spring 42 is S and the spring constant is k, the following equation (2) holds true.

k-s −r 2/r 3 = cosθ(A tWx
+A zWz + LIWz ) ... (2) (However, all efficiencies and friction coefficients are ignored.) Therefore, by using a disc spring or the like as the spring 42 and changing the combination, equation (2) can be solved. When the left and the methods match, it becomes possible to set the spring constant k.

It should be noted that the above embodiment is merely an example, and it goes without saying that the two members can be replaced with other parts having the same function. For example, in the embodiment described above, a balance method using the spring 42 is described, but the method is not limited to this, and for example, the output shaft of a reduction ram may be connected to the shaft 65 shown in FIG. Similar effects can be obtained. In addition, in the example mJ, the ceiling 1
Although two guide rails 11 are shown that are movable along the guide rail 11, they may be movably provided along a wall, floor, etc.

〔Effect of the invention〕

Since this invention has the above-mentioned structure, the interior of the imaging room can be simplified, and circulatory system X-ray diagnosis (2) During the procedure, not only the doctor but also the X-ray technician, The nurse and several other people can stand up and move around in a horizontal position, which improves work efficiency.Also,
By being able to shift to fluoroscopy, that is, direct imaging, the diagnostic ability can be greatly improved (increased in two ways), and it is also possible to provide highly reliable products at low cost because the sub-production is extremely simple. 7. It is intended to reduce the effects of sagging such as c.

[Brief explanation of drawings]

Figure 1 shows the 1. FIG. 2 is a diagram showing the photographing state by the I trolley f2, FIG. 2 is a diagram showing all the shadow states of the film changer cart C' in the front direction, and FIG. 6 is a diagram showing the photographing state by the film changer trolley in the side direction. , FIG. 4 is a diagram showing an example of the X-ray photographing apparatus of the present invention in the image plane direction in which the dorsum of the X-ray gland and I are facing each other, and FIG. Figure 6 is a front view of Figure 4 viewed from the X-ray tube, Figure 7 is a side view of the opposite side, Figures 8 and 9 are balance diagrams. (Schematic front view and side view of the structure and front blade 1 in the direction of rotation, 4... Catheter mounting base, 5... Top plate, 6...・
Sample, 21...X tube, 24.25...Arm, 26...Box, 27...Xn゛A1
．． Mechanical detection device (I, I), 28...Film changer, 61...Rank, 42...Spring,
48.53...Chain wheel, 55...Cheno. Agent: Kensuke Nori Chika (1 other person), 6th attorney
Figure 7 Figure 8 Figure 9 Figure 4 (, l r3 25

Claims (1)

[Scope of Claims] A pair of movable frames that are movable along guide rails, a holding member that is split into two parts, each of which is telescopic, and one of the pair of holding members that is movable along a guide rail. The distal end of the holding member C2 is supported by the mechanism, and an X-ray image detection device and a film changer that are attached to the arm next to the adjustment machine and attached to the front f5i: X-win photography equipment.