JP2826582B2 - Medical device for mass screening - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention eliminates the need for an operator to adjust a device to an individual subject, particularly in a medical device handling a large number of subjects. The present invention relates to a medical device capable of improving the effect of a test or treatment, and at the same time, improving the quality of a test and reducing the burden on a subject.

[Conventional technology]

In a conventional apparatus, for example, when a subject is imaged as in a chest mass examination apparatus shown in FIG.
Standing between the tube device and the II (image intensifier) device, the photographing is performed. At this time, in order to adjust the chest of each subject having a different height to the fixed X-ray irradiation field, a method is adopted in which the operator adjusts the height of the stepping board on which the subject is riding with an electric motor or the like. Was.

[Problems to be solved by the invention]

In the above-mentioned prior art, when the operator is a subject, particularly a schoolchild having a large individual difference in height, the operator performs positioning of the chest of the subject and the X-ray irradiation field after the subject stands in front of the imaging device. The inspection efficiency has been reduced. This is because, in the case of an electric stepping platform, it is necessary to reduce the stepping platform operating speed for safety considerations in order to adjust the height after the subject gets on the platform.

In the case where the subject is an adult with a relatively small individual difference in height, the X-ray irradiation field was fixed at a fixed position without adjusting the height using a motorized step, adjustable X-ray tube device, or II device. In many cases, as shown in FIG. 3, a method of aligning the chest of the subject with the X-ray irradiation field by bending or stretching the subject as shown in FIG.

By bending the subject in this way, the subject is physically burdened during imaging. Furthermore, the quality of a photograph taken because the photographer takes a picture in an unreasonable manner may be degraded.

An object of the present invention is to improve the examination efficiency by eliminating the trouble of aligning the chest of the subject and the X-ray irradiation field, and furthermore, to prevent the subject from crouching during imaging, and The purpose is to reduce the burden and at the same time to improve the quality of the examination.

[Means for solving the problem]

In order to achieve the above object, data such as height previously required for height adjustment previously recorded from an information storage medium such as a magnetic card is read out in advance, and one examinee descends from the stepping platform and reads the next data. The height of the subject is adjusted at a high speed by the electric motor during the preparation time until the subject gets on the platform.

[Action]

Data such as the height of each subject stored in a magnetic card, an IC card, or the like is read by an information reading device and temporarily stored in a buffer. The information stored in the buffer is called up by the CPU when needed.
The electric motor for driving the step platform or the step platform is provided with a height detecting mechanism, and a drive command is sent from the CPU to the electric motor by comparing the detected height with the information of each subject called by the CPU. According to this command, the electric motor rotates by the required number of revolutions, and adjusts the height of the step platform to a height suitable for each subject. The end of imaging of one subject is determined by a signal from a load detection mechanism provided on the stepping platform, an X-ray tube exposure end signal, an operator end confirmation signal, or a signal combining these. Will be confirmed. When the CPU confirms that the imaging of one person has been completed, the CPU calls up information on the next subject from the buffer and adjusts the height of the stepping platform. As described above, when the photographing of one person is completed, preparation for photographing the next subject is started without delay, and the height is adjusted without the subject riding on the step platform, so that the height can be adjusted at high speed. Therefore, the inspection efficiency is improved. In addition, since the height adjustment is automatically performed for all the subjects, it is not necessary to bend the subjects at the time of imaging, so that the burden on the subjects can be reduced and the quality of the examination can be improved.

In addition, in order to cope with the fine adjustment and the error of the stored information, the same low-speed stepping operation as in the past can be performed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. 1 and FIGS. 4 to 7.

FIG. 1 is a block diagram showing the configuration of a chest mass examination apparatus according to one embodiment of the present invention.

The data 12 about the height of each subject previously written on the magnetic card 10 is stored in a magnetic card reader 14.
Is read by A buffer 16 capable of storing a plurality of data is connected to the magnetic card reader 14. The CPU 16 is connected to the buffer 16 and controls the entire height adjustment operation of the step ladder performed by the medical device of the present invention. CPU1
Drive device 2 for driving a prime mover such as a motor from 8
The signal line to 0 is connected, and the high-speed drive signal 22 and the low-speed drive signal 24 are transmitted to the drive device 20. Further, the CPU 18 has an encoder 28 connected to the motor 26 for detecting the height of the platform.
From the encoder 24, and the height signal from the encoder 24
30 is transmitted to the CPU 18. The motor 26 has a screw rod 32, for example.
And a stepping up / down mechanism 36 consisting of screws 34
Supports 38. An examinee 40 rides on the step 38. A step sensor 38 is provided with a load sensor 42 for detecting that a subject 40 is riding on the step 38.
To 8, the subject getting on and off signal 44 is turned on by a signal line when the subject 40 is on the stepping board 38 and is off when the subject 40 is not on the platform.
Sent as The subject 40 has an X-ray tube device 46 and an II device
Located between 48 and. The X-ray tube apparatus 46 transmits an irradiation end signal 50 to the CPU 18 via a signal line when X-ray irradiation ends. The exposure end signal 50 also transmits a signal to the console 54 for the operator (not shown) to operate the medical device for group examination, and displays the end of the X-ray photography on the console 54. The operator is performing operations required for the examination at the console 54 of the medical apparatus.
To the end confirmation signal 56. Operation console 54 or X
A low-speed operation lever 60 is provided near the radiographing device 58 to move the platform 38 at a low speed that is safe even when the subject is on the subject. It is possible to correct the displacement due to the erroneous height data 12.

The CPU 18 monitors the data storage status of the buffer 16, and sends a signal to the display device 62 when the buffer is full. The display device 62 receives a signal from the CPU 18 and issues an instruction to wait for input.

Next, the operation of the medical device for group examination configured as described above will be described.

Each subject 40 inserts the magnetic card 10 storing the height data 12 thereof into the magnetic card reader 14. Thus, the data 12 is read and stored in the buffer 16 capable of storing data for n persons. The CPU 18 monitors the number of data in the buffer 16, and when the number of data reaches n, sends a signal to the display device 62, and the display device 62 instructs the subsequent subject to wait for data input. Emits.

When the CPU 18 recognizes that the data 12-1 of the first subject 40-1 has been read, the CPU 18 captures the data 12-1 and compares it with the height signal 30 transmitted from the encoder 28. As a result, if there is a difference between the two, the signal of the load sensor 42 is OF
After confirming that F, the high-speed drive command 2
Send 2 In response to the high-speed drive command 22, the motor 26 starts rotating at a high speed, and the rotation causes the screw rod 32 to rotate, thereby causing the screw 34 and further the step 38 fixed to the screw 34 to move up and down at a high speed. The CPU 18 monitors the height signal 30 transmitted from the encoder 28 and instructs the driving device 20 to minimize the difference from the data 12-1. After the operation of the platform 38 is completed, the subject 40-1 gets on the platform 38. At this time, the load sensor 42 operates to transmit the subject getting on / off signal 44 as ON, and the CPU 18 recognizes that the subject 40-1 has stepped on the platform 38. Thereafter, the high-speed drive signal 22 is not transmitted until the subject getting on / off signal 44 is transmitted as OFF.

After the examinee 40-1 gets on the platform 38, the operator
It is confirmed that the chest of 40-1 to be imaged and the X-ray irradiation field 64 match. At this time, if the heights do not match, the low-speed operation lever 60 is operated. By operating the low-speed operation lever 60, the CPU 18 sends a low-speed drive signal 24 to the drive device 20.
Is transmitted, so that the step 38 moves up and down at such a low speed that there is no danger to the subject 40-1.

After the alignment is completed, the operator sets the X-ray tube device 46 and
Photographing is performed by the II device 48. When the X-ray tube device 46 ends the irradiation, the CPU 18 and the console 54 transmit an irradiation end signal 50. After confirming the end of the exposure on the console 54, the operator confirms the end of the exposure, and if all the shootings have been completed, the end confirmation signal 56
Send At the end of imaging, the subject 40-1 is on the platform 38
Get off from. Along with this, the subject getting on / off signal 44 is transmitted from the load sensor 42 to the CPU 18 as OFF, and the CPU 18
It recognizes that -1 has got off the platform 38.

The CPU 18 outputs an OFF signal of the subject getting on / off signal 44 and an exposure end signal 50.
After receiving the three signals of the end confirmation signal 56 and, particularly, after receiving the OFF signal of the subject getting on / off signal 44, an appropriate waiting time is set for safety, and then the subject 16-2 of the subject 16-2 is returned from the buffer 16. The data 12-2 is called, and the same operation as performed for the data 12-1 is performed thereafter. The CPU 18 counts the number of photographing end persons, and sends a signal to the display device 62 so as to cancel the input waiting instruction after one or a plurality of preset persons have ended.

FIG. 4 shows another embodiment of the present invention. In the first embodiment, the encoder 28 is used as a mechanism for detecting the height of the
The same effect as that of the first embodiment can be obtained by mounting the linear encoder 70 on the stepping plate 38 instead of mounting it on the step 26. As shown in FIG. 5, the same effect as that of the first embodiment can be obtained by fixing the wire 68 of the stepping plate 38 and the like and employing a mechanism for rotating the encoder 28 by the wire 68.

In the first embodiment, a combination of the screw rod 32 and the screw 34 is employed for the motor 26 as the stepping up / down mechanism 36, but any mechanism capable of moving the stepping up and down may be used, as shown in FIG. Even when the combination of the sprocket 70 and the chain 72 is adopted, the same effect as in the first embodiment can be obtained.
In these embodiments, the motor 22 has a screw rod 32 or a chain.
Although 72 is directly attached, a power transmission mechanism such as a speed reducer may be inserted therebetween, and the same effect as in the first embodiment can be obtained.

In the first embodiment, the load sensor 42 is used to detect that the subject 40 is on the step 38. However, a similar effect can be obtained by using a sheet-like switch instead. As shown in FIG. 7, a photoelectric switch using a light emitting body 72 and a light receiving device 74, an infrared sensor, an ultrasonic sensor, or the like may be used, and the same effects as in the first embodiment can be obtained.

In the first embodiment, the magnetic card is used as the information storage medium. However, any medium that can record personal data, such as an IC card or an optical card, may be used, and the same effects as those of the first embodiment can be obtained.

In the first embodiment, an apparatus using the II apparatus 48 is taken as an example, but an apparatus using an X-ray film may be used, and the same effects as in the first embodiment can be obtained.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, one subject completes an examination, and a step can be quickly and quickly adjusted to the height suitable for the next subject before the next subject arrives at the imaging device. Therefore, even when an X-ray examination is performed on a large number of subjects, the efficiency does not decrease due to the alignment of the imaging parts. In addition, since the height adjustment is automatically performed, the height adjustment can be forgotten or omitted, so that the burden on the subject can be reduced. Quality improvement is possible.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. FIG. 2 is a diagram showing the configuration of a conventional similar device. FIG. 3 is a diagram showing a problem in the conventional device. 4th
FIG. 7 is a diagram showing another embodiment of the present invention. 10 ... magnetic card, 14 ... magnetic card reader, 16
… Buffer, 18… CPU, 20… Drive device, 26 …… Motor, 28 …… Encoder, 32 …… Screw rod, 34 …… Screw,
38 ... Stepping board, 40 ... Subject, 42 ... Load sensor, 46 ...
... X-ray tube device, 48 ... II device, 54 ... Operation console, 60 ...
Lever for low-speed operation, 62 ... Display device, 64 ... X
Radiation field.

Claims (1)

(57) [Claims] An X-ray tube device for irradiating an X-ray to an imaging region of a subject, an irradiation field limiting device for limiting an X-ray irradiation field from the X-ray tube device, and imaging of the subject X penetrating the site
A medical device that receives a line image and captures the X-ray image, and a medical device that includes a capturing site alignment device for positioning the capturing site of the subject in the irradiation field; An information storage medium for storing subject information such as height, a reading device for reading the subject information from the information storage medium, and a reading device adapted to be adapted to the height of the subject read from the reading device. A medical apparatus comprising: an imaging region alignment control device that controls a position of the imaging region alignment device.