JP2685813B2 - X-ray fluoroscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention irradiates a subject placed on a top plate with X-rays,
The present invention relates to an X-ray fluoroscopic imaging apparatus that performs X-ray fluoroscopic imaging.

(Prior Art) FIG. 2 is a view showing a conventional X-ray fluoroscopic imaging apparatus, FIG. 2 (a) shows the bed 1 in a horizontal position, and FIG. 2 (b) shows the bed 1. It is a figure which shows the state which was made into an oblique position. A top plate 2 provided on the bed 1 of the X-ray fluoroscopic imaging apparatus,
A spot device 5 for copying an X-ray image on an X-ray film is moved up and down in order to change the position and position of the subject 3. For example, the top plate 2 moves up and down in the direction of the wall 4 as shown by the dotted line in FIG. 2 (a), and its moving stroke range is preset.

By the way, when the X-ray fluoroscopic imaging apparatus is installed in a room and the top plate 2 and the spot device 5 are moved up and down, if the installation space in the room is narrow, as shown in FIG. Interference with the top plate 2 which is a movable part and FIG. 2 (b)
Image intensifier 6 which is a movable part as shown in FIG.
Interference between (II) and the floor 7 often occurs. If this interference is left as it is, not only the X-ray diagnosis may be hindered but also the subject may be seriously harmed, and the apparatus and the room may be damaged.

Therefore, when interference is predicted due to vertical movement of the top plate 2 and the spot device 5, the range of movement strokes of the top plate 2 and the like is limited in advance.

FIG. 3 is a diagram showing a control device for controlling the moving stroke range of the top plate 2 and the like. In the figure, a position detection sensor 11 detects the top 2 when the top 2 moves up and down and reaches a preset position, and a bed operation input switch 12 is a switch for operating the bed 1. Is. The bed control circuit 13 inputs the detection signal from the position detection sensor 11 and the switch signal from the bed operation input switch 12 to control the bed 1. The bed drive circuit 14 receives a control signal from the bed control circuit 13 and generates a drive signal for driving the bed 1, and the bed drive unit 15 receives the drive signal and drives the bed 1. is there. According to the apparatus configured as described above, when the top plate 2 horizontally moves to a preset position as shown in FIG. 3, the position detection sensor 11 provided at the position detects the top plate 2. A control signal for stopping the couchtop 2 is output from the bed control circuit 13 to the bed drive circuit 14. And the bed driving unit 15 receives the drive stop signal from the bed driving circuit 14,
Stop the top plate 2. Therefore, the movement stroke range of the top plate 2 can be limited by the position detection sensor 11. Further, in the case of limiting the movement stroke range, the top plate 2 is detected by shifting the position of the position detection sensor set in advance.

(Problems to be Solved by the Invention) However, in the above conventional X-ray fluoroscopic imaging apparatus,
There are the following problems. That is, since interference is expected, X that limits the movement stroke range of the top plate 2 or the like.
Even when there is still a margin until the moving stroke range such as the vertical movement of the top plate 2 and the spot device 5 interferes with the room when the fluoroscopic imaging apparatus is installed indoors, the position detection sensor 11 of the position detection sensor 11 is particularly installed. It is not easy to change the mounting position and adjust the moving stroke range because of problems such as mounting processing. For this reason, the moving stroke range remains at the original installation position, and as a result, the moving stroke range is sandwiched and the diagnostic function is limited.

Therefore, an object of the present invention is to easily set the moving stroke range in accordance with the indoor conditions at the time of installation of the apparatus, to maximize the effective use of the moving stroke range within an allowable range, and to reduce the operating burden on the operator. An object of the present invention is to provide an X-ray fluoroscopic imaging apparatus which can be reduced and which can perform X-ray fluoroscopic imaging without unnecessarily limiting the diagnostic function.

[Structure of the Invention] (Means for Solving the Problems) The present invention has taken the following means to solve the above problems and achieve the object. That is, the present invention includes a bed top on which a subject is placed, an X-ray tube that irradiates the subject with X-rays,
In an X-ray fluoroscopic imaging apparatus movably provided with a spot device that holds a film that captures an X-ray image transmitted through the subject, a unit for inputting a size of a room in which the X-ray fluoroscopic imaging apparatus is installed. And a room in which the movable ranges of the bed top, the X-ray tube, and the spot device are input so that the bed top, the X-ray tube, and the spot device do not interfere with structures in the room. Means for determining the position of the bed top plate, the X-ray tube, and the spot device, and the bed top plate and the X-ray tube based on the detected positions. And means for limiting the movement of the spot device within the movable range.

(Action) By taking such means, the following action is exhibited. According to the present invention, when data such as the ceiling height, width, and depth of a room is input to the input device, based on this data, the movement stroke calculation device at the time of device installation detects the vertical movement of the tabletop / spot device. The travel stroke range is automatically set and restricted to the proper position. Therefore, the moving stroke range can be easily set in accordance with the indoor condition when the device is installed, and the moving stroke range can be utilized to the maximum extent within the allowable range. In addition, the operator's operation load can be reduced, and moreover, X-ray fluoroscopy can be performed without unnecessarily restricting the diagnostic function.

(Embodiment) FIG. 1 is a schematic configuration diagram showing an embodiment of an X-ray fluoroscopic imaging apparatus according to the present invention. The same parts as those in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.
A feature of the present invention is that a moving position detection circuit 30 that detects a moving position of the top plate 2 and the spot device 5, an input device 20 that inputs data such as a ceiling height, width, and depth in a room,
Based on the input signal from the input device 20 and the detection signal from the moving position detecting circuit 30, the moving stroke range in which the top plate 2 and the spot device 5 move up and down when the X-ray fluoroscopic imaging apparatus is installed is set at an arbitrary position. And a moving stroke calculation device 21 that automatically calculates and limits the setting and outputs a moving stroke limit signal s4.

The moving stroke calculation device 21 is configured as follows. The moving stroke calculation circuit 22 inputs data (input signal s1) such as ceiling height, width, depth, etc. from the input device 20, and from the loci of the top plate 2, the spot device 5, etc. stored in the storage circuit 23 in advance. The CPU 24 calculates the optimum movement stroke range that does not receive interference based on the previous data,
The moving stroke range signal s2 is output. The backup circuit 25 is the moving stroke calculation circuit.
Power is supplied to operate 22. The moving stroke range signal s2 is always held by the backup circuit 25 so that it is not affected even when the power is turned off. The comparison circuit 26 inputs the movement stroke range signal s2 read from the storage circuit 23 and the movement position signal s3 from the movement position detection circuit 30 to compare and judge them, and the movement stroke limit signal s4 is given to the bed. It is output to the control circuit 13. A potentio-absolute encoder or the like is used for the moving position detection circuit 30.

Next, the operation of the embodiment configured as described above will be described.
First, as shown in FIG. 1, the operator inputs size data such as the ceiling height and width / depth of the room to the input device 20. The input data is converted into an input signal s1 by the input device 20, and the input signal s1 is output to the movement stroke calculation circuit 22 in the movement stroke calculation device 21. Based on the trajectory of the top plate 2, the spot device 5 and the like stored in the storage circuit 23 in advance by the arithmetic circuit 22, an optimum movement stroke range that does not receive interference is arithmetically processed by the CPU 24 based on the previous data, and the movement stroke is calculated. The range signal s2 is output to the comparison circuit 26.

On the other hand, the moving position of the top 2, the spot device 3, etc. is detected by the moving position detecting circuit 11, and this moving position detecting signal s3 is sent to the comparing circuit 26 and compared with the moving stroke range signal s2. For example, the comparison circuit 26 sends the moving position signal s3 to the bed control circuit 13, and the bed drive circuit 14
The bed driving unit 15 is stopped through the top plate 2, the spot device 3
The moving stroke such as the vertical movement of is properly limited.

As described above, according to the present embodiment, when data such as the ceiling height, width, and depth of the room is input to the input device 20, the moving stroke calculation device 21 uses the data to input the ceiling plate 2 to the ceiling plate 2.
The limitation of the movement stroke range such as vertical movement in the spot device 5 is automatically set at an arbitrary position. Therefore, the moving stroke range can be easily set in accordance with the indoor condition when the device is installed, and the moving stroke range can be utilized to the maximum extent within the allowable range. In addition, the operator's operation load can be reduced, and moreover, X-ray fluoroscopy can be performed without unnecessarily restricting the diagnostic function.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

EFFECTS OF THE INVENTION According to the present invention, it is possible to easily set the movement stroke range in accordance with the indoor conditions at the time of installing the apparatus, and to effectively use the movement stroke range within the allowable range.
Moreover, it is possible to provide an X-ray fluoroscopic imaging apparatus capable of reducing the operational burden on the operator and performing X-ray fluoroscopic imaging without imposing restrictions on the diagnostic function more than necessary.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of an X-ray fluoroscopic imaging apparatus according to the present invention. FIG. 2 is a view showing a conventional X-ray fluoroscopic imaging apparatus, FIG. 2 (a) shows a state in which the tabletop is in a horizontal position, and FIG. 2 (b) shows a state in which the tabletop is in an oblique position. FIG. 3 and FIG. 3 are views showing a control device for controlling the movement stroke range of the top plate or the like. 1 ... Bed, 2 ... Top, 3 ... Subject, 4 ... Wall, 5
...... Spot device, 6 …… Image intensifier,
7: floor, 11: position detection sensor, 12: bed operation input switch, 13: bed control circuit, 14: bed drive circuit,
15 …… Bed drive unit, 20 …… Input device, 21 …… Movement stroke calculation device, 22 …… Movement stroke calculation circuit, 23 ……
Memory circuit, 24 ... CPU, 25 ... Backup circuit, 26 ...
… Comparison circuit, s1 …… input signal, s2 …… movement stroke range signal, s3 …… movement position signal, s4 …… movement stroke limit signal.

Claims (1)

(57) [Claims] 1. A bed top on which a subject is placed, an X-ray tube for irradiating the subject with X-rays, and a spot device for holding a film on which an X-ray image transmitted through the subject is recorded. In the X-ray fluoroscopic imaging apparatus, the means for inputting the size of the room in which the X-ray fluoroscopic imaging apparatus is installed, the bed top plate, the X-ray tube, and the spot device are provided in the room. A means for determining the movable range of the bed top, the X-ray tube, and the spot device based on the input size of the room so as not to interfere with a structure; and the bed top and the X-ray tube. And means for detecting the position of the spot device, and the bed top and the X based on the detected position.
An X-ray fluoroscopic imaging apparatus comprising: a ray tube and means for limiting the movement of the spot device within the movable range.