JPH06261897A - Medical x-ray device - Google Patents

Abstract

PURPOSE:To constitute the device so that its X-ray radiation can be recognized easily by setting variably the sound volume and/or the sound quality of an alarm sound in accordance with a noise level at the time of radiation of X rays in the peripheral environment in which the device is installed. CONSTITUTION:The X-ray device having an X-ray controller 7, an X-ray high voltage generating device 8, an X-ray tube device, and a hand switch 19 is provided with an automatic sound volume/sound quality adjusting mechanism for an alarm sound, consisting of a sound collecting microphone 1, an amplifier circuit 2, a noise measuring circuit 3, a sound volume determining circuit 4, a gate circuit 11, a driving circuit 5 and a sounding element 6, and by the sound collecting microphone 1, a noise in the periphery of the device is detected, and by the noise measuring circuit 3, the noise is measured, and in accordance with this noise, the sound volume and/or the sound quality of the alarm sound are set by the sound volume/sound quality determining circuit 4, and in accordance with this set value, the driving circuit 5 drives the sounding element. Driving of the sounding element is executed in response to the hand switch 10, and the moment an alarm is generated, its sound volume and sound quality are fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical X-ray apparatus and, more particularly, to a technique for enabling an operator of the apparatus to easily recognize X-ray radiation.

[0002]

2. Description of the Related Art A medical X-ray apparatus is obliged to have a display device which is visible or audible from a position where it is normally operated, in order to let an operator know that X-ray emission is in progress (JIS Z 4207). reference). For this reason, medical X-ray devices have conventionally been equipped with an electronic buzzer, an electronic chime, or an indicator lamp, which are operated in conjunction with the emission of X-rays and emit X-rays while they are operating. When it is in the middle, it gives an alarm to the operator.

[0003]

By the way, it is well known that there are various medical X-ray apparatuses. It is a stationary type that is installed in the X-ray room or a mobile type that can be moved to the hospital room. In addition to these classifications, the environment in which the device is used, especially the noise condition surrounding the device, the brightness of the room, etc., are also different from the standard ones.

Assuming that the above-mentioned alarm is sounded, the use of the device during a relatively noisy time zone of the day and the operation of the device during a relatively quiet time zone such as nighttime are performed. In many cases, even a single device has a different usage environment, such as use in a relatively quiet place such as an X-ray room and use in a relatively noisy place such as a patient room. However, in the conventional device, the volume of the alarm such as the electronic buzzer is fixed, and therefore there is a problem that the X-ray radiation alarm sound is difficult for the operator to hear depending on the noise condition surrounding the device. there were.

Therefore, the present invention has been made for the purpose of making an X-ray radiation alarm sound audible to an operator regardless of the noise conditions around the apparatus.

[0006]

In order to achieve the above object, the present invention provides an X-ray emitting means for emitting X-rays toward an object and an X-ray emitting time for the X-ray emitting means. X-ray control means for setting and controlling radiographic conditions, X-ray emission start command means for instructing the X-ray control means to start X-ray emission, and X-ray emission start command for the X-ray control means. Then, in a medical X-ray apparatus having an alarm generating means for issuing an alarm by sound from the time when the X-ray emitting means emits an X-ray until the X-ray emitting time elapses, There is provided noise level detection means for detecting the noise level of the surrounding environment, and means for setting the volume and / or sound quality of the alarm sound emitted by the alarm means according to the detection value of the noise level detection means.

[0007]

The noise level detecting means detects the noise level of the surrounding environment in which the medical X-ray device is placed. When the operator operates the X-ray emission start commanding means, the noise level detecting means
The noise level of the surrounding environment of the device at the operation timing is detected, and an alarm sound having a volume and / or sound quality that can be easily recognized by the operator at the noise level is sent to the alarm generation means. As a result, an appropriate alarm sound is generated at the same time as the X-ray emission.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 20 denotes an X-ray device, which has a conventionally known X-ray controller 7, an X-ray high voltage generator 8, an X-ray tube device 9, and a hand switch 10 for X-ray emission start command. There is. Further, in FIG. 1, 6 is a sounding element, which is composed of, for example, the electronic buzzer or electronic chime described above.
Is a drive circuit of the sounding element 6.

The above-described structure is conventionally known. When the hand switch 10 is pressed to give an X-ray emission start command S ₂ to the X-ray controller 7, the X-ray controller 7 causes the X-ray emission to start.
The circuit system including the linear high voltage generator 8 and the X-ray tube device 9 is closed for a predetermined time. As a result, the subject is irradiated with X-rays from the X-ray tube device 9. At this time, the X-ray controller 7 sends a warning sound generation command S ₁ to the drive circuit 5 in response to the X-ray emission signal. Therefore, the sounding element 6 issues an alarm only while the X-ray emission signal is being output. This alarm is the drive circuit 5
Since the output of is fixed, the sound volume is a predetermined level (including sound quality).

According to the present invention, noise conditions around the device
In order to change the volume and / or sound quality of the alarm, a volume / sound quality automatic adjustment mechanism 15 is added as shown in FIG. The configuration will be described below. In FIG. 1, 1 is a sound collecting microphone that detects noise around the device and converts it into an electrical signal, 2 is an amplifier that amplifies the input signal to an appropriate level, and 3 is a noise measuring circuit A device for measuring a level and outputting a signal corresponding to the level, 4 is a volume sound quality determination circuit, in which data corresponding to the volume and / or sound quality is preset, and the preset value is set according to the input signal. A gate circuit 11 selects a predetermined one from the above and outputs it as a signal. When a warning sound is generated from the sounding element 3, the output of the sound volume determining circuit 4 is output so that the sounding sound of the sounding element 6 is not fed back. It is a gate. That is, when the signal output from the drive circuit is input to the gate circuit 11 at the timing when the drive signal is output from the drive circuit 5 to the sounding element 6, the drive signal output by the drive circuit 5 is fixed and an alarm sound is output. It should not be regarded as driving. The gate circuit 11 is reset when the X-ray emission signal is turned off, that is, the drive signal of the drive circuit 5 is turned off.

Next, the operation of the apparatus of this embodiment will be described.
First, the imaging and positioning of the subject are performed, and imaging conditions (tube voltage, tube current, imaging time) for imaging the imaging site are set. Note that this photographing condition may be automatically set by the device. At this time, the sound collection microphone 1 detects noise around the device, sends the detection signal to the amplifier circuit 2, and the noise measurement circuit 3 determines the noise level around the device in real time by the output of the amplifier circuit 2. Based on this output, the volume sound quality determination circuit 4 selects data for setting the sound volume and / or sound quality of the alarm sound emitted by the sounding element 6. Then, a signal corresponding to the selected data is input to the drive circuit 5 via the gate circuit 11. The above operation is continuously performed.

When the operator operates the hand switch 10 in this state, an X-ray emission signal is output and the X-ray controller 7
The subject is irradiated with X-rays in accordance with the imaging conditions set in. Simultaneously with this X-ray emission signal, the X-ray controller 7 outputs an alarm sound generation command S ₁ to the drive circuit 5. When this command S ₁ is input, the drive circuit 5 outputs to the gate circuit 11 a drive signal corresponding to the output signal of the volume sound quality determination circuit 4 input via the gate circuit 11 at that timing, to the sounding element 6. Output a signal. by this,
The operation of the circuit system is blocked with respect to the alarm sound generated by the sounding element 6. When the drive signal is input, the sounding element 6 generates an alarm sound with a volume and sound quality corresponding to the level and frequency of the drive signal.

When the photographing time of the set photographing condition elapses, an X-ray emission end signal is output from the X-ray controller 7, the X-ray emission from the X-ray tube device 9 is stopped, and at the same time, an alarm is issued. The sound generation command S ₁ is turned off, the operation of the drive circuit 5 is stopped, and no alarm sound is output. Further, when the operation of the drive circuit 5 is stopped, at the same time, the gate circuit 11
Is reset. Even after the above operation is stopped, the circuit system of the sound collecting microphone 1 to the gate circuit 11 continues to operate. Therefore, the alarm sound can be generated with the volume and sound quality corresponding to the noise level at the moment when the operator presses the hand switch 10.

Although one embodiment of the present invention has been described by taking the case of X-ray imaging as an example, the present invention is not limited to the above embodiment. For example, the present invention may be applied to an alarm of X-ray emission during X-ray fluoroscopy, and the sound collecting microphone 1 is not provided in the device, but the wall of a room near the position where the operator operates the device. Etc. may be provided.

[0015]

As described above, according to the present invention, the noise level of the surrounding environment surrounding the apparatus is constantly measured, and the volume of the alarm sound corresponding to the noise level corresponding to the timing of X-ray radiation is measured. ， Since the sound quality can be set,
The operator can easily recognize the X-ray emission as compared with the conventional case.

[Brief description of drawings]

FIG. 1 is a block diagram of a medical X-ray apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 Sound collection microphone 3 Noise measurement circuit 4 Volume sound quality determination circuit 5 Drive circuit 6 Sounding element 7 X-ray controller 10 Hand switch

Claims (1)

[Claims] 1. X-ray emitting means for emitting X-rays toward a subject, X-ray control means for setting and controlling X-ray imaging conditions including X-ray emission time for the X-ray emitting means, and X-ray emission start command means for instructing the X-ray control means to start X-ray emission and an X-ray emission start command for inputting to the X-ray control means, and X-rays are emitted from the X-ray emission means. In the medical X-ray apparatus having an alarm generating means for issuing an alarm by a sound from the time until the X-ray emission time elapses, noise level detecting means for detecting the noise level of the environment surrounding the apparatus at the time of projection; A medical X comprising: means for setting the volume and / or sound quality of the alarm sound emitted by the alarm generating means in accordance with the detection value of the noise level detecting means.
Line device.