JP2943985B2 - X-ray fluoroscope - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray fluoroscopic apparatus that emits X-rays to a subject and takes a transmission X-ray image of the X-ray, and in particular, the inside of each component of the apparatus. The present invention relates to an X-ray fluoroscopic apparatus capable of reducing installation cables by reducing cables for connecting components and a control device and improving reliability.

[Conventional technology]

As shown in FIG. 3, a conventional X-ray fluoroscopic apparatus uses an X-ray
A fluoroscopy table 1 that emits rays to a subject and obtains a transmission X-ray image thereof;
An X-ray generator 2 for supplying power for X-ray generation to the fluoroscopy table 1, one or a plurality of operating devices 3 and 4 for remotely operating the fluoroscopy table 1, and an internal configuration of each of the above components And a control device 5 connected to the parts and controlling each component. Note that the two operating devices 3 and 4 are for remote operation of the fluoroscopic table 1 by a doctor or an X-ray technician, and the first operating device 3 is usually an imaging room in which the fluoroscopic table 1 is installed. The second operating device 4 is used for operating in the immediate vicinity of the see-through table 1 and is located in the photographing room. Also, in FIG.
Reference numerals 6a, 6b, 6c, and 6d are cables for connecting the control device 5 with the fluoroscopy table 1, the X-ray generator 2, and the controllers 3, 4, respectively.

As shown in FIG. 4, switches 7a, 7b, 7c for operating various mechanisms are provided inside the respective components such as the fluoroscopic table 1, the X-ray generator 2, the operating devices 3, 4, and the like. ..., actuators 8a, 8b, 8c for driving those mechanisms, sensors 9a, 9b, 9c, ... for detecting and controlling the operation of these actuators 8a to 8c, and a display 10a for displaying various kinds of information. , 10b, 10c
And the like, and these internal components and the control device 5 are connected by the cables 6a, 6b, 6c, and 6d, respectively.

[Problems to be solved by the invention]

However, in such a conventional X-ray fluoroscopic apparatus, as shown in FIG.
Since the respective components such as the X-ray generator 2, the operating devices 3, 4 and the like were intensively controlled, as shown in FIG. 4, switches 7a, 7b, ... and actuators 8a, 8b, ... and sensors 9a, 9b, ... and indicators 10a, 10
.. and the control device 5 must be connected by a large number of cables 6a to 6d, respectively. Here, in the actual device, the sensors 9a, 9b,..., Tens to hundreds of tens, switches 7a, 7b,.
a, 10b, ... etc. each have dozens of points.
The total number of 6a to 6d was up to about 500.
The length of the cable 6a between the fluoroscopy table 1 and the control device 5 is about 10 to 20 m, and the length of the cable 6c between the first operation device 3 and the control device 5 is about 20 to 30 m. It was also extended. Therefore, the amount of wiring of the cables 6a to 6d becomes enormous, and a large installation space is required for wiring processing of the cables 6a to 6d.

In addition, the X-ray generator 2 has a maximum of 150K for X-ray generation.
A high voltage of about V is generated, but in order to generate such a high voltage from a commercial power supply of 200 to 400 V, a large current of 500 A or more is required inside the X-ray generator 2 at a maximum. Then, a very large induction noise is generated. Further, the current for driving the actuators 8a to 8c, which are the internal components, of the see-through table 1 is about 20 A at the maximum,
This current also causes induction noise. However, in the conventional X-ray fluoroscopic apparatus, as shown in FIGS. 3 and 4, the control device 5, the fluoroscopic table 1, the X-ray generation device 2, and each component such as the operation devices 3, 4 Are electrically connected by a large number of long cables 6a to 6d, so that it is easy to pick up the induction noise generated in each part of the apparatus as described above. Therefore, the above-mentioned induction noise may be mixed into the control device 5 and cause a malfunction, thereby reducing the reliability of the device.

Therefore, an object of the present invention is to provide an X-ray fluoroscopic apparatus capable of solving such a problem.

[Means for solving the problem]

The above-mentioned object is to provide a fluoroscopic table that emits X-rays to a subject to obtain a transmitted X-ray image, an X-ray generator that supplies power for generating X-rays to the fluoroscopic table, and remotely control the fluoroscopic table An X-ray fluoroscopy apparatus comprising: one or more operating devices for performing the control, and a control device connected to the internal components of each of the above-described components and controlling each of the components. Each individual control device that controls the operation of each component is distributed and arranged inside or near the component, and at least in the fluoroscope and one operating device or in the individual control device of the fluoroscope and the X-ray generator. Is equipped with a microprocessor, and converts an individual control device equipped with the microprocessor into an electric / optical converter, an optical transmitter connected to the electric / optical converter, and an optical / electric converter connected to the optical transmitter. It is achieved by X-ray fluoroscopic apparatus connected to each other by an optical communication means comprising a stage.

In addition, it is effective to mount a microprocessor on each of the individual control devices distributed and arranged for each of the above components, and to connect the individual control devices equipped with the microprocessor to each other by optical communication means. is there.

(Operation)

In the X-ray fluoroscopic apparatus configured as described above, the control device is dispersed in or near each component for each individual control device that controls the operation of each component, and the control device is disposed near each of the internal components. By doing so, the cable connecting the internal components and the individual control device is shortened. Also, a microprocessor mounted in the required individual control enables complicated and high-speed control. Further, by connecting the individual control devices equipped with the microprocessor to each other by optical communication means, it is possible to improve the reliability of information transmission between the components.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of an X-ray fluoroscopic apparatus according to the present invention. This X-ray fluoroscopic apparatus emits X-rays to a subject and takes a transmission X-ray image thereof.
As shown in the figure, the system comprises a fluoroscopy table 1, an X-ray generator 2, a first controller 3, and a second controller 4.

The fluoroscopy table 1 radiates X-rays to a subject to obtain a transmission X-ray image for medical diagnosis. Although not shown, the X-ray film automatic transport mechanism and the posture of the subject can be variously changed. A mechanism for changing the pressure and a mechanism for pressing the abdomen of the subject are mounted. A switch 7a for operating the above-mentioned various mechanisms, actuators 8a, 8b, 8c for driving those mechanisms, and operations of these actuators 8a to 8c are detected and controlled inside the fluoroscopic table 1. Sensors 9a, 9b,
Internal components such as 9c, 9d, and 9e are incorporated. The X-ray generator 2 supplies electric power for generating X-rays to the see-through table 1, and includes internal components such as a switch 7b, a sensor 9f, and a display 10a. The first and second operation devices 3 and 4 are for remote operation of the fluoroscopic table 1 by a doctor or an X-ray technician, and the first operation device 3 is usually provided with an imaging room in which the fluoroscopic table 1 is installed. Is placed in another operation room, and the second operation device 4 is used for operation in the immediate vicinity of the see-through table 1, and is placed in the imaging room. And
Inside the first and second operation devices 3 and 4, a switch 7c,
Internal components such as 7d and the display 10b, and internal components such as the switches 7e and 7f and the display 10c are incorporated.

Here, in the present invention, individual control devices 11a, 11b, 11c, 11d, 11e, and 11f are provided inside or near each component such as the fluoroscopic table 1, the X-ray generator 2, the operating devices 3, 4, and the like. They are distributed and arranged. The above-mentioned individual control devices 11a, 11b, 11c
It controls the operation of each part of the fluoroscopic table 1 individually, such as an automatic film film transport mechanism, a mechanism that changes the posture of the subject in various ways, and a mechanism that presses on the abdomen of the subject. It is located inside. An actuator 8a and sensors 9a and 9b, which are internal components of the fluoroscopic table 1, are connected to one individual control device 11a by a cable 6a, and the other individual control device 11b is similarly connected to the actuator 8b and sensor 9c, 9d are connected by a cable 6a ', and the other individual control device 11c also has a switch 7a, an actuator 8c, and a sensor 9e.
a ″. The individual control device 11d
Controls the operation of each part of the X-ray generator 2 and is arranged inside the X-ray generator 2. A switch 7b, a sensor 9f, and a display 10a, which are internal components of the X-ray generator 2, are connected to the individual control device 11d by a cable 6b. Furthermore, the individual control devices 11e and 11f individually control the operation of each part of the first and second operating devices 3 and 4, and the first and second operating devices 3 and 4
Each is arranged inside. The switches 7c and 7d and the display 10b, which are internal components of the first operation device 3, are connected to the individual control device 11e by a cable 6c, and the other individual control device 11f is connected to the second Switches 7e and 7f, which are internal components of the operating device 4, and a display 10c are connected by a cable 6d. The individual control device 11e is connected to the individual control device 1 via an optical communication unit described later.
It has a function of managing 1a to 11d and 11f.

Also, the individual control devices 11a, 11a,
Microprocessors (hereinafter abbreviated as “MPUs”) 12a, 12b, 12c, and 12e are mounted in the individual control devices 11e provided inside the 11b and 11c and the first controller 3, respectively. The MPUs 12a to 12c control each unit of the fluoroscopic table 1 based on a control program, and the MPU 12e controls each unit of the first operation unit 3 based on the control program.

Further, the individual control devices 11a, 11b, 11c in the see-through table 1 equipped with the MPUs 12a, 12b, 12c and the individual control device 11e in the first operation unit 3 equipped with the MPU 12e are connected by optical communication means. Interconnected. This optical communication means transmits information between two connected individual control devices via light, and is configured as follows. First, see-through table 1
The connection between one of the individual control devices 11a and the individual control device 11e in the first operation device 3 is made by an electric / optical conversion means (hereinafter referred to as an “E / O converter”) mounted on the individual control device 11a. ) 13a
And an optical fiber cable 14a as an optical transmission means connected to the E / O converter 13a and the optical fiber cable 1
4a, which is connected to the optical controller
One-way optical communication means is constituted by an electric conversion means (hereinafter referred to as "O / E converter") 15a, and an E / O converter 16a mounted on the other individual control device 11e and the E / O converter 16a The optical fiber cable 17a connected to the optical fiber cable 17a and the O / E mounted on the individual control device 11a connected to the optical fiber cable 17a
The optical communication means in the opposite direction is constituted by the converter 18a, and is connected by the optical communication means in both directions. Similarly,
The connection between the other individual control device 11b and the other individual control device 11e is performed by an E / O converter 13b, an optical fiber cable 14b, and an O / E
A one-way optical communication means comprising a converter 15b, and an E / O converter 16
b and an optical fiber cable 17b and an optical communication means in the opposite direction comprising an O / E converter 18b. Further connection between the other individual control device 11c and the other individual control device 11e,
One-way optical communication means including the E / O converter 13c, the optical fiber cable 14c, and the O / E converter 15c, and the opposite direction including the E / O converter 16c, the optical fiber cable 17c, and the O / E converter 18c. Of optical communication means. The individual control device 11d provided inside the X-ray generator 2 and the individual control device 11f provided inside the second operating device 4 are connected to the individual control device 11e by cables 19 and 20, respectively. It is connected.

Next, the operation of the X-ray fluoroscopic apparatus configured as described above will be described. First, for example, the operator operates the switch 7c of the first operating device 3 to operate the actuator of the fluoroscopic table 1.
Suppose you operate 8a. At this time, when the switch 7c is operated, the MPU 12e mounted on the individual control device 11e provided inside the first operating device 3 previously sets the individual control device 1e.
The E / O converter 16a mounted on the individual control device 11e according to a control program stored in a memory (not shown) on 1e.
To the actuator 8a. Then, the drive command is converted from the electric signal into an optical signal represented by the intensity of light by the E / O converter 16a, and is input to the optical fiber cable 17a connected thereto. Next, the optical signal is transmitted through the optical fiber cable 17a to the O / O mounted on the individual control device 11a provided inside the fluoroscopic table 1.
Input to the / E converter 18a. Then, the O / E converter 18a converts the drive command of the actuator 8a represented by the intensity of light into an electric signal. Then, the MPU 12a mounted on the individual control device 11a is
A drive signal is sent to the actuator 8a of the fluoroscopic table 1 according to a control program stored in a memory (not shown) on 1a to drive the actuator 8a.

Next, for example, by driving the actuator 8a, the film transport mechanism of the fluoroscopic table 1 is operated to set the X-ray film at the photographing position. It is assumed that the information is transmitted to the individual control device 11e. At this time, when the sensor 9a detects the setting of the X-ray film at the imaging position, the detection signal is input to the individual control device 11a provided inside the fluoroscopic table 1. And
The MPU 12a mounted on the individual control device 11a includes an E / O converter 13 mounted on the individual control device 11a according to a control program stored in a memory on the individual control device 11a in advance.
An electric signal indicating that the sensor 9a has detected the film set is transmitted to a. Then, this electrical signal is
The E / O converter 13a converts the electric signal into an optical signal represented by the intensity of light, and inputs the optical signal to an optical fiber cable 14a connected thereto. Next, the optical signal is input to the O / E converter 15a mounted on the individual control device 11e provided inside the first controller 3 via the optical fiber cable 14a. Then, the O / E converter 15a converts the detection signal of the film set represented by the intensity of light into an electric signal. Then, it notifies the MPU 12e mounted on the individual control device 11e that the sensor 9a of the fluoroscopic table 1 has detected the setting of the X-ray film at the imaging position.

In this manner, the individual control device 11e provided inside the first operating device 3 and the other individual control devices 11a to 11c, 11d, 11
Information can be exchanged with f, and the operation of each component can be controlled. In FIG. 1, the individual control devices 11a, 11b, 11c, and 11e provided inside or near the see-through table 1 and the first operation device 3 are shown as having MPUs mounted thereon. The invention is not limited to this,
An MPU may be mounted on each of the individual control devices 11a, 11b, 11c, 11d provided inside or near the fluoroscopy table 1 and the X-ray generator 2.

FIG. 2 is a block diagram showing a second embodiment. In this embodiment, the individual control devices 11a, 11 distributed in the respective components such as the fluoroscopy table 1, the X-ray generator 2, the operating devices 3, 4, etc.
MPUs 12a, 12b, 12c, 12d, 12 for b, 11c, 11d, 11e, 11f respectively
e, 12f, and the individual control devices 11a to 11f having the MPUs 12a to 12f are connected to an E / O converter, an optical fiber cable, and an O / E
They are interconnected by optical communication means comprising a converter. The MPU 12d controls power for X-ray generation from the X-ray generator 2 based on a control program.
The MPU 12f controls each section of the second operation device 4 based on a control program. The operation in the second embodiment is performed in the same manner as in the first embodiment. In the case of this embodiment, since all the components are connected by the optical communication means, the protection against the induction noise generated in each part of the device can be further enhanced.

In the above description, the individual control device 11e provided inside the first operation device 3 is different from the other individual control devices 11a to 11a.
Although it was assumed that it had a function to manage 11d and 11f,
The present invention is not limited to this, and the above-mentioned other individual control devices 11a to 11d
And 11f may be provided with a management function.

〔The invention's effect〕

Since the present invention is configured as described above,
The see-through table 1, the X-ray generator 2, the operation devices 3, and the like are distributed inside or near each component for each individual control device 11 a to 11 f that controls the operation of each component, such as switches, actuators,
By arranging them near the internal components such as the sensor and the display, respectively, the internal components and each individual control device 11 are arranged.
Cables 6a, 6b, 6c, 6d connecting a to 11f can be significantly shortened. Therefore, the required amount of cable wiring can be significantly reduced, and the installation space for the wiring processing can be reduced. Further, since a microprocessor is mounted inside or near the required individual control devices (11a to 11c and 11e or all), complicated and high-speed control can be performed by the microprocessor. Furthermore, since the individual control devices equipped with the microprocessor are connected to each other by the optical communication means including the electric / optical conversion means, the light transmission means, and the optical / electric conversion means, they are hardly affected by electromagnetic induction.
Inductive noise generated in each part of the device can be hardly picked up. Therefore, each of the individual control devices 11a to 11f
Harmful inductive noise can be prevented from being mixed in, and the cause of malfunction of the individual control devices 11a to 11f can be reduced, and the reliability of the device can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an X-ray fluoroscopic apparatus according to the present invention, FIG. 2 is a block diagram showing a second embodiment,
3 and 4 are an explanatory diagram and a block diagram showing a conventional X-ray fluoroscopic apparatus. 1 ... see-through table, 2 ... X-ray generator, 3, 4 ... operating device, 6
a ~ 6d ... cable, 7a ~ 7f ... switch, 8a ~ 8c ...
Actuators, 9a to 9f Sensors, 10a to 10c Indicators, 11a to 11f Individual controllers, 12a to 12f Microprocessors (MPUs), 13a to 13f, 16a to 16f E / O conversion (Electrical / optical conversion means), 14a-14f, 17a-17f ... optical fiber cable (optical transmission means), 15a-15f, 18a-18f ... O
/ E converter (optical / electrical conversion means).

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-54796 (JP, A) JP-A-59-111738 (JP, A) JP-A-60-53127 (JP, A)

Claims (2)

(57) [Claims] An X-ray radiator for radiating X-rays to a subject to obtain a transmitted X-ray image, an X-ray generator for supplying power for generating X-rays to the X-ray radiator, and remotely controlling the X-ray radiator An X-ray fluoroscopy apparatus comprising: one or more operating devices for performing the control, and a control device connected to the internal components of each of the above-described components and controlling each of the components. Each individual control device that controls the operation of each component is distributed and arranged inside or near the component, and at least in the fluoroscope and one operating device or in the individual control device of the fluoroscope and the X-ray generator. Is equipped with a microprocessor, and converts an individual control device equipped with the microprocessor into an electric / optical converter, an optical transmitter connected to the electric / optical converter, and an optical / electric converter connected to the optical transmitter. hand X-ray fluoroscopic apparatus, characterized in that connected to each other by an optical communication means comprising a. 2. A microprocessor is mounted on each of the individual control devices dispersedly arranged for each component, and the individual control devices on which the microprocessors are mounted are mutually connected by optical communication means. The X-ray fluoroscopic apparatus according to the above.