JPH068585Y2 - Film holder position controller for X-ray fluoroscope - Google Patents

Description

[Detailed Description of the Invention] [Field of Use of the Invention] The present invention is a film holder position control device for an X-ray fluoroscopic imaging stand, which can effectively cope with a case where a pressing switch for rapid shooting is separated during rapid shooting. It is about.

[Background of the invention]

A conventional film holder position control device for an X-ray fluoroscopic imaging table includes a press switch for rapid photography, which is usually a push button switch, which can complete the operation from the start to the end of X-ray imaging by keeping pressing for a certain period of time. The film holder movement control circuit for moving the film holder from the preparation position to the photographing position by starting the pressing of the film holder and for returning the film holder from the photographing position to the preparation position when the X-ray photographing is completed, and the selected photographing. A quick-shooting step-up circuit for determining the stop position at the shooting position of the film holder according to a pattern, for example, full film shooting or split shooting. In this case, the quick-shooting step-by-step circuit operates stepwise after the end of X-ray photography,
The film holder stop position signal is given to the movement control circuit so that the stop position of the film holder at the time of the next shooting will be the next stop position according to a predetermined program according to the selected shooting pattern.

That is, in the conventional apparatus, the push button switch is kept pressed for a certain period of time, and the film holder is returned from the photographing position to the preparation position by the photographing end signal generated only when the X-ray is irradiated without being stopped within the set photographing time. At the same time, the quick-shooting step-by-step circuit was running step by step.

Therefore, if the push button switch is not pressed for a certain period of time (when it is released during the quick shooting), the following problems occur. That is, in the case where the pressing of the push button switch is released before the predetermined time has elapsed from the start, and when the release is made before the start of X-ray irradiation, the state in which the film holder remains in the photographing position ( When the X-ray irradiation is in progress, the non-restoration state occurs, and the quick-shooting step-up circuit does not step. Therefore, in both the former and latter cases, the film holder had to be manually returned to the preparation position before the next photographing. In the latter case, in addition to the manual return movement described above, if the quick-shooting step circuit is not manually stepped, the next shot will be duplicated at the same location (film) as the previous shot. Oops.

As described above, in the conventional apparatus, the film holder must be manually returned and moved in both the former and latter cases, and in the latter case, in addition to the manual stepping of the quick-step stepping circuit, the operation is not required. There is a problem that it is troublesome and impairs the speed of diagnosis. Further, in the latter case, if the next photographing is performed without manually stepping, duplicate photographing may be required, and the photographing may have to be performed again, which causes a problem that the quickness of diagnosis is significantly impaired. .

[Purpose of device]

The present invention has been made in order to solve the above problems, and even when the quick-shooting press switch is not continuously pressed for a certain period of time, the film holder does not return to a non-recovered state or the double-shooting does not occur. An object of the present invention is to provide a film holder position control device for an X-ray fluoroscopic imaging stand, which can simplify and speed up diagnosis.

[Outline of device]

The device of the present invention is provided with a determination circuit that determines, when the pressing of the press switch for quick shooting is released before a certain period of time, whether the release is made before the start of X-ray irradiation or during the X-ray irradiation. According to the output signal, when the determination result is the former, the film holder is moved back, and in the latter case, the film holder is moved back and the quick-shooting stepping circuit is stepwise operated to achieve the above object. It is a thing.

[Example of device]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram showing an embodiment of a film holder position control device for an X-ray fluoroscopic imaging table according to the present invention. In FIG. 1, reference numerals 1, 2, and 3 are a push button switch for quick shooting, a film holder movement control circuit, and a quick shooting step circuit, which are the same as those in the conventional apparatus. Reference numeral 4 denotes a film holder moving motor which is driven and controlled by the film holder movement control circuit 2. Reference numeral 5 denotes a photographing end switch which is closed when X-rays are irradiated without being stopped within a set photographing time, that is, when the X-ray photographing ends. is there. Reference numeral 6 denotes a photographing pattern selection switch for selecting whether the whole film photographing is divided photographing. For example, when the whole photographing is selected, the switch 6a is closed, and when the divided photographing is selected, the switch 6b is closed.

Reference numeral 7 denotes an X-ray irradiation switch which is closed during X-ray irradiation (from the start to the end of irradiation), and 8 denotes a determination circuit, which releases the push of the push button switch 1 before the lapse of the predetermined time from the start. In this case, it is determined whether the cancellation is performed before the start of X-ray irradiation or during the X-ray irradiation. The determination circuit 8 determines the switch release determination signal 9 before the start of X-ray irradiation according to the determination result.
Alternatively, the switch release determination signal 10 is output during X-ray irradiation.

Reference numeral 11 is a drive circuit including, for example, two OR circuits 11a and 11b as shown in the drawing. When the judgment signal 8 is outputted from the judgment circuit 8, a film holder return movement signal 12 is given to the control circuit 2, and the judgment circuit is also made. When the determination signal 10 is output from 8, the signal 12 is given to the control circuit 2 and the step signal 13 is given to the quick-shooting step circuit 3. The drive circuit 11 has the switch 5 closed and the photographing end signal 14
Is also sent, the signal 12 is given to the control circuit 2 and the signal 13 is given to the quick-shooting step circuit 3. 15 is a signal 13
Is given to the control circuit 2 from the quick-shooting stepping circuit 3.
Is a film holder stop position signal given to the.

Next, the operation of the device of the present invention will be described. First, when the push button switch 1 is pressed, the motor 4 is driven by the control circuit 2 to move the film holder (not shown) from the preparation position to the photographing position, and X-rays are emitted. When X-rays are emitted for setting and photographing, the switch 5 is closed and the photographing end signal 14 is given to the drive circuit.
11 is provided to the drive circuit 11 to the control circuit 2 for the film holder return movement signal 12, and the quick-shooting step circuit 3 to the step signal.
13 will be given respectively. As a result, the film holder returns from the shooting position to the preparation position, and the quick shooting step circuit 3
Moves stepwise, and the film is stopped by the control circuit 2 so that the stop position of the film holder at the next shooting may be the next stop position according to a predetermined program according to the shooting pattern selected by the selective closing of the switch 6. The holder stop position signal 15 is given.

The above description is the operation when the push button switch 1 is continuously pressed for a certain period of time and X-ray imaging is normally performed. After the push button switch 1 is pressed, the push button switch 1 is released before a certain period of time (press release). The operation in this case will be described. First, when the push button switch 1 is released before the start of X-ray irradiation, the determination circuit 8 receives a 0V signal from the push button switch 1 side, but receives 0V from the X-ray emitting switch 7 side.
Since no signal is given, it is determined that the push button switch 1 has been released before the start of X-ray irradiation, and the determination signal 9
Is output. As a result, only the film holder return movement signal 12 is output from the drive circuit 11 and the film holder which has already been moved to the photographing position by the control circuit 2 is returned to the preparation position without the stepping motion of the quick-shooting step circuit 3. Therefore, the next shooting can be performed without the need to manually return the film holder to the preparation position, and the next shooting is performed at the same position (film) as the previous shooting that was not irradiated with X-rays. Next, when the push button switch 1 is released during X-ray irradiation, the determination circuit 8 determines that the 0V signal is given from both the push button switch 1 side and the X-ray emitting switch 7 side. It is determined that the push button switch 1 has been released, and a determination signal 10 is output. As a result, signals 12 and 13 are output from the drive circuit 11, and the control circuit 2
And the quick-shooting step-by-step circuit 3 operates in the same manner as when the above-mentioned X-ray imaging is normally performed, that is, the film holder is returned from the photographing position to the preparation position, and the quick-shooting step-by-step circuit 3 performs step-by-step operation and control. Apply signal 15 to circuit 2. Therefore, also in this case, it is not necessary to manually return the film holder to the preparation position, and the next shooting can be performed. And in this case, the next image will be taken at the place (film) next to the previous image that has been irradiated with X-rays, so that duplicate images will not be taken.
There is no need to re-shoot due to it.

[Effect of device]

As described above, the present invention aims at simplifying the operation and accelerating the diagnosis without causing the film holder to return to the non-restored state or duplicate shooting even when the quick-shooting press switch is not pressed for a certain period of time. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the device of the present invention. 1 ... Pushbutton switch for quick shooting, 2 ... Film holder, movement control circuit, 3 ... Rapid shooting step circuit, 5 ... Shooting end switch, 6 ... Shooting pattern selection switch, 7 ...
Switch during X-ray irradiation, 8 ... Judgment circuit, 11 ... Drive circuit.

Claims (1)

[Scope of utility model registration request] 1. A pressing switch for rapid photography capable of completing the operation from the start to the end of X-ray photography by continuing to press for a fixed time, and a film holder from the preparation position to the photographing position by starting the depression of this switch. To
A film holder movement control circuit for returning the film holder from the photographing position to the preparation position upon completion of the X-ray photographing, and a quick photographing for determining a stop position of the film holder at the photographing position according to the selected photographing pattern. In a film holder position control device of an X-ray fluoroscopic imaging table including a step circuit, if the pressing of the switch is released before the elapse of the certain time, whether the release is made before the start of X-ray irradiation or X And a determination circuit for determining whether or not the irradiation is being performed, and when the determination circuit determines that the release has been performed before the start of X-ray irradiation, the movement control circuit is operated to return and move the film holder. When it is determined that the release is performed during X-ray irradiation, the movement control circuit is operated so as to return the film holder, and the speed is increased. X-ray fluoroscopic imaging table of the film holder position control apparatus characterized by comprising a driving circuit for the stepping circuit is incremented operate in the same manner as X-ray imaging end.