JP2004181018A - Moving type x-ray apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving type X-ray apparatus capable of adjusting phase differences between left and right caster wheels and a handle. <P>SOLUTION: Sprockets 23 and 24 are fixed on left and right back wheel casters 21 and 22, and chains 30 and 31 fitted with turnbuckles 28 and 29 are hung thereon, and two idler sprockets 25 and 26 coupled by a spring 27 are fitted on the chain 30 to hold an appropriate tension. Similarly, chains 40 and 41 fitted with turnbuckles 38 and 39 are hung on a sprocket 33 fixed on a handle 32 and on the other sprocket 34, and two idler sprockets 35 and 36 connected with each other by a spring 37 are fitted on the chain 40 to hold an appropriate tension. A sprocket 42 is hung on the chain 31 and is connected to the sprocket 34 by a shaft 43. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mobile X-ray apparatus for performing X-ray fluoroscopy or radiography by moving to an operating room, an emergency room, a hospital room, and the like, and in particular, on a bogie having a pair of turning wheels that can be steered in synchronization. The present invention relates to a mobile X-ray apparatus having an X-ray generator mounted thereon and moving in a direction determined by turning wheels.
[0002]
[Prior art]
For patients who cannot be moved and are used in surgery or emergency rooms, X-ray fluoroscopy and radiography, and necessary positioning by the free movement of each part of the device to perform X-ray imaging in the hospital room Examples of mobile X-ray apparatuses that can be used include a surgical X-ray TV apparatus and a round radiography apparatus (for example, see Patent Document 1).
FIG. 2 shows an external view of a surgical X-ray TV device. This device comprises an X-ray tube device 50 and an I.D. I. The rotation of the C-arm 52 is performed manually to allow the TV camera 51 to be mounted and quick positioning, so that the C-arm must be perfectly balanced and the C-arm 52, X The tube device 50, I. I. -The center of gravity of the TV camera 51 is arranged so as to coincide with the center of the arc of the C-arm 52. As for the vertical movement of the C-arm 52, a manual operation using a spring balance is used, and there is a type in which the position can be determined more quickly than in an electric motor.
In order to move the carriage 53 lightly, the structure of the underbody is different from that of the X-ray imaging device for the round examination, and the range of movement is limited to the operating room. When a pair of rear wheel casters 21 and 22 steered by a free front wheel caster 1 and a steering wheel 32 are used, and an inverter type X-ray generator 54 is mounted on a truck 53, and the truck 53 moves to follow a see-through area, Correspondingly, the main body can be translated by the steering function.
[0003]
FIG. 3 shows a steering mechanism of the pair of rear wheel casters 21 and 22 attached to the truck 53. The apparatus shown in FIG. 2 can be moved by front wheel casters 1 and rear wheel casters 21 and 22 arranged on the left and right sides, and the rear wheel casters 21 and 22 can be turned synchronously by a handle 32. With this mechanism, the device can perform not only the forward and backward movement but also the crab running (parallel movement of the main body).
Sprockets 3 and 4 are fixed to the rear wheel casters 21 and 22 provided on both the left and right sides, and the chain 6 is connected to the respective sprockets 3 and 4 so that the left and right rear wheel casters 21 and 22 are synchronized. I have. Further, the idler sprocket 5 whose position can be adjusted is pressed against the chain 6 to remove the slack of the chain 6.
The connection between the handle 32 and the rear wheel casters 21, 22 is such that a sprocket 8 is fixed to the handle 32, and this sprocket 8 is connected to another sprocket 9 by a chain 11. Further, the idler sprocket 10 whose position can be adjusted is pressed against the chain 11 to remove the slack of the chain 11. Another sprocket 12 is connected to the chain 6 connecting the left and right rear wheel casters 21 and 22. The shaft 13 fixed to the sprocket 9 and the shaft 15 fixed to the sprocket 12 are fixed by driving the pin 14 after matching the phases of the handle 32 and the rear wheel casters 21 and 22. By the above-described mechanism, the rotational force applied to the handle 32 is transmitted to the rear wheel casters 21 and 22 in synchronization.
[0004]
[Patent Document 1]
JP-A-7-299054 (page 3, FIG. 1)
[0005]
[Problems to be solved by the invention]
Although the conventional mobile X-ray apparatus is configured as described above, the angle phases of the left and right rear wheel casters 21 and 22 are set such that the chain 6 is hooked on the sprockets 3 and 4 fixed to the rear wheel casters 21 and 22. And the manner in which the chain 11 is hooked on the sprocket 8 fixed to the handle 32 and the sprocket 9 fixed to the shaft 13 to adjust the phase difference of the chain 6 and the chain 11 within one pitch. I can't. When the chain 6 and the chain 11 are loosened, the chain 6 and the chain 11 are re-stretched by adjusting the positions of the idler sprocket 5 and the idler sprocket 10. At this time, the phases of the left and right rear wheel casters 21 and 22 are shifted. Problem. When a phase difference occurs between the left and right rear wheel casters 21, 22 and the handle 32, the straightness when moving the device is affected, and the operability of the device is reduced.
Further, the phase difference between the handle 32 and the rear wheel casters 21 and 22 depends on the driving accuracy of the pin 14 when the shaft 13 and the shaft 15 are fixed. In this case, there is a problem that there is no method for adjusting the phase. When a phase difference occurs between the handle 32 and the rear wheel casters 21 and 22, the operability of the device similarly decreases.
[0006]
The present invention has been made in view of such circumstances, and a mobile X-ray apparatus capable of easily adjusting a phase difference between left and right caster wheels and a steering wheel and improving operability of the apparatus has been developed. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a mobile X-ray apparatus according to the present invention includes an X-ray generator mounted on a bogie having a pair of caster-type wheels that are turned by a steering mechanism that can be steered in synchronization. A mobile X-ray apparatus that moves to the side of a user to perform X-ray fluoroscopy / imaging, including means for adjusting the rotation angle phase between the wheels and between the wheels and a steering system.
[0008]
Further, the mobile X-ray apparatus according to the present invention is provided with means for maintaining an appropriate tension between the wheels and a chain connecting the wheels and a steering system.
[0009]
The mobile X-ray apparatus according to the present invention is configured as described above, and includes a pair of caster-type wheels that are turned by a steering mechanism that can be synchronously steered on a bogie equipped with the X-ray generator. As a means for adjusting the rotational angle phase between the wheel and the steering system, one turnbuckle is attached to each end of the chain connecting the sprockets fixed to the left and right wheel casters.
As a means for maintaining appropriate tension between the wheels and the chain connecting the wheels and the steering system, two idler sprockets connected by a spring are attached to the chain to remove slack in the chain. The same mechanism is attached to the chain connecting the sprocket fixed to the handle and the other sprocket.
With the above-described mechanism, the phase between the left and right rear wheel casters and between the steering wheel and the rear wheel casters can be adjusted steplessly by the turnbuckle, so that the phase difference can be completely eliminated. Further, with the idler sprocket with spring attached to the chain, the slack of the chain can be removed and a phase difference can be prevented.
With this mechanism, not only the device can be stably moved in the front-rear direction, but also the crab leg (parallel movement of the main body) can be performed, and accurate positioning can be performed.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the mobile X-ray apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing a mechanism that steers (steers) rear wheel casters 21 and 22 of a mobile X-ray apparatus according to the present invention using a handle 32. FIG. 2 is a view showing the appearance of a conventional surgical X-ray TV apparatus.
The mobile X-ray apparatus of the present invention includes a pair of caster-type rear wheels 21 and 22 that are turned by a steering mechanism that can be synchronously steered, and sprockets 23 and 24 fixed to the steering shafts of the rear wheels 21 and 22. Chains 30 and 31 hung on the sprockets 23 and 24, turnbuckles 28 and 29 attached and connected to both ends of the chains 30 and 31 respectively to adjust the phase difference, and hung on the chain 30 and connected by springs 27. , Two idler sprockets 25 and 26 for removing slack of the chains 30, 31; a handle 32 for steering the rear wheel casters 21 and 22; a sprocket 33 fixed to the handle 32; A sprocket 34 fixed to the shaft 42 via a shaft 43; Chains 40 and 41 hung on chains 3 and 34, turnbuckles 38 and 39 attached and connected to both ends of the chains 40 and 41, respectively, and capable of adjusting a phase difference; Equipped with two idler sprockets 35 and 36 for removing the slack of the steering wheels and the front wheel casters 1, and an X-ray generator and X-ray tube devices 50, I.C. I. And a cart 53 equipped with a TV camera 51.
[0011]
This device is different from the conventional steering mechanism in that the turnbuckles 28 and 29 and the turnbuckles 38 and 39 are attached to both ends of the chains 30 and 31 and the chains 40 and 41, and the chains 30, 31 and The length of one chain or less (phase difference adjustment) of the chains 40 and 41 can be continuously adjusted.
The turnbuckles 28 and 29 and the turnbuckles 38 and 39 are parts having a right-handed screw and a left-handed screw joint at both ends. Chains 30, 31 and chains 40, 41 are hooked at both ends, and set and connected between them. Then, turn the nut to tighten it.
Further, in the conventional apparatus shown in FIG. 3, the idler sprockets 5, 10 are hung on the chains 6, 11 from one side, but in the present apparatus, the two idler sprockets 25, 26 connected by springs 27, 37 and the idler sprockets are used. The sprockets 35 and 36 are attached to the chain 30 and the chain 40, and are held by springs 27 from both sides to remove slack in the chains 30, 31 and the chains 40 and 41 so that a phase difference does not occur.
[0012]
The steering mechanism of the mobile X-ray apparatus will be described.
Sprockets 23 and 24 are fixed to rear wheel casters 21 and 22 attached to the lower left and right sides, respectively. Chains 30 and 31 are hung on the respective sprockets 23 and 24, and turnbuckles are attached to both ends of the chains 30 and 31. 28 and 29.
Further, idler sprockets 25 and 26 connected by a spring 27 between the chains 30 are attached.
A sprocket 42 is hung on the chain 31, and the sprocket 42 is connected to the sprocket 34 by a shaft 43.
The sprocket 33 and the sprocket 34 fixed to the handle 32 are connected to the chains 40 and 41, the turnbuckles 38 and 39, and the idler sprocket 35 36.
The rotational force given to the handle 32 by the above mechanism is transmitted to the rear wheel casters 21 and 22 in synchronization.
[0013]
Next, a method for adjusting the phase between the left and right rear wheel casters 21 and 22 and between the handle 32 and the rear wheel casters 21 and 22 will be described.
The phases of the left and right rear wheel casters 21 and 22 are adjusted by rotating the turnbuckles 28 and 29 to adjust the lengths of the chains 30 and 31. At this time, since the lengths of the turnbuckles 28 and 29 can be adjusted steplessly, complete phase adjustment of the rear wheel casters 21 and 22 is possible. Also, by attaching idler sprockets 25, 26 connected by springs 27 between the chains 30, even if the chains 30, 31 are loosened, the slack is removed by the tension of the spring 27, and the chains 30, 31 Tension is maintained. At this time, since the tension of the spring 27 is equally applied to the chains 30 and 31, even if the chains 30 and 31 become loose, the phases of the left and right rear wheel casters 21 and 22 do not shift. Even if the slack of the chains 30, 31 is not uniform and the phases of the rear wheel casters 21, 22 are shifted, the phases can be matched by the above-described method using the turnbuckles 28, 29.
The phase adjustment of the handle 32 and the rear wheel casters 21, 22 can be adjusted in the same manner by turnbuckles 38, 39 and idler sprockets 35, 36 connected by springs 37, as in the conventional assembly technique. Pinning by processing is not required.
The continuous phase difference adjustment mechanism as described above and the mechanism that does not cause loosening of the steering system enable stable operation of the device at all times, and can quickly set complicated positioning by operating the steering wheel freely back and forth, left and right, You can shoot.
[0014]
In the embodiment, the surgical X-ray TV apparatus shown in FIG. 2 has been described as the mobile X-ray apparatus, but the present invention can also be applied as a steering mechanism of a simple manual mobile X-ray imaging apparatus for a round examination.
Further, in the description of the embodiments, I.I. I. Although the description of the display of the X-ray image captured by the TV camera 51 is omitted, a stand-type installation table or a suspension table using a ceiling suspension apparatus is provided in the same operating room or emergency room where the mobile X-ray apparatus is used. Then, a monitor for display is set and an X-ray image is observed.
[0015]
【The invention's effect】
The mobile X-ray apparatus according to the present invention is configured as described above, and the sprockets fixed to the wheel casters provided on the left and right of the lower part of the bogie are connected by a chain, and one turnbuckle is attached to each end of the chain. By rotating the two turnbuckles and adjusting them, the phase between the left and right rear wheel casters and between the steering wheel and the rear wheel casters can be continuously adjusted, and the phase difference can be completely eliminated. Then, even if the respective phase differences occur for some reason, the adjustment can be easily performed by the turnbuckle.
Also, by attaching two idler sprockets connected by a spring to the chain and maintaining appropriate tension, even if the chain becomes loose, the proper tension is maintained without causing a phase difference, which is maintenance-free. It becomes.
Then, the operator operates the device comfortably and stably and moves it to the operating room, emergency room, hospital room, etc., and moves the device not only in the front-back direction near the patient but also in comfortable crawling (parallel movement of the main body). X-ray fluoroscopy and imaging can be performed by accurate positioning.
[Brief description of the drawings]
FIG. 1 is a diagram showing one embodiment of a mobile X-ray apparatus according to the present invention.
FIG. 2 is a diagram showing an appearance of a mobile X-ray apparatus of the surgical diagnostic system.
FIG. 3 is a view for explaining a handle driving mechanism of a conventional mobile X-ray apparatus.
[Explanation of symbols]
1 Front wheel casters 3, 4, 8, 9, 12, 23, 24, 33, 34, 42 Sprockets 5, 10, 25, 26, 35, 36 Idler sprockets 6, 11, 30, 31, 40, 41 Chain 13, 15, 43 Shaft 14 Pin 21, 22 Rear wheel casters 27, 37 Springs 28, 29, 38, 39 Turnbuckle 32 Handle 50 X-ray tube device 51 I. I. -TV camera 52 C arm 53 Cart 54 X-ray generator

Claims (2)

A mobile X-ray that carries an X-ray generator on a bogie equipped with a pair of caster-type wheels that are turned by a steering mechanism that can be steered in synchronization, and moves to the subject side to perform X-ray fluoroscopy and imaging A mobile X-ray apparatus, comprising: means for adjusting a rotation angle phase between said wheels and between said wheels and a steering system. 2. A mobile X-ray apparatus according to claim 1, further comprising means for maintaining an appropriate tension between said wheels and a chain connecting said wheels to a steering system.

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