JPS6156627A - Endoscope photographing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a transendoscopic photographing device for photographing transendoscopic images.

[Prior Art] It is widely practiced to take images of the inside of a body cavity, such as the stomach, while inspecting it using an endoscope. In this case, normally 20 to 40 frames are taken for one case, for example, one patient, but once the endoscope is inserted into the stomach and the stomach is inflated, the interval between images is fixed at a constant rate. In particular, in the case of the stomach, images are taken rhythmically at regular intervals. When taking this image, the release switch must be pressed each time, but in transendoscopy, in addition to the release operation, air supply operations and the operation angle must be adjusted at the same time to move the endoscope within the body cavity. These operations place a heavy burden on doctors during transendoscopy.

[Purpose] An object of the present invention is to provide a transendoscopic photographing device that reduces the burden of release operation so that the patient can concentrate more on diagnosis.

[Summary] According to the present invention, a photographing switch provided in an endoscope, a circuit that generates a photographing signal at a predetermined period while the photographing switch is in operation, and a cycle setting that arbitrarily sets the photographing signal generation cycle of the photographing signal generating circuit. An endoscopic photographing device is provided that includes a circuit and a photographing section that photographs a transendoscopic image in response to a photographing signal.

[Embodiment] According to the transendoscopic imaging device shown in FIG. It is being The CCD 12 and release switch 14 are connected via signal lines 15 and 16 to a video signal processing circuit 18 and a photographing signal generation circuit 19 provided in a light source unit 17, respectively. Video signal processing circuit 18 is connected to monitor 24 . A cycle setting circuit 20 for setting the generation cycle of the copying signal is connected to the photographing signal generation circuit 19. The output of the R shadow signal generation circuit 19 is connected to a gate signal circuit 21. The output of the gate signal circuit 21 is sent to the video signal processing circuit 1.
It is connected to the AND gate 22 along with the output of 8. AND
The output of the gate 22 is connected to an image recording device 23 for recording transendoscopic images.

In the embodiment described above, when the endoscope 11 is inserted into a body cavity, for example, the stomach, and the inside of the stomach is imaged by the CCD 12, a video signal corresponding to the image of the inside of the stomach is outputted from the CCD 12. The video signal is supplied to a video signal processing circuit 18 via a signal line 15, processed, and supplied to a monitor 24, on which an image of the inside of the stomach is displayed. In this state, when the doctor presses the release switch 14 to obtain a still image and operates the endoscope to move the vehicle shadow region, a release signal is supplied to the imaging signal generation circuit 19 via the signal line 16. The signal generation circuit 19 generates a photographing signal at a period set by a period setting circuit 20. Every time a photographing signal is input to the gate signal circuit 21, a gate signal corresponding to one frame period of the video signal is generated by an AND gate. 22. Therefore, each time a photographing signal is input, one frame of video signal of the corresponding part is supplied to A.
The signal is input to the image recording device 23 via the ND gate 22 and recorded as a still image signal.

That is, since the doctor continues to press the release switch 14 and operates the endoscope, the predetermined areas are sequentially imaged, so the doctor does not have to press the release switch 14 for each area to be imaged, and the burden on the doctor during imaging is reduced. Therefore, doctors can pay more attention to diagnosis and perform accurate diagnosis and prompt examination.

According to FIG. 2, the release switch 14 is connected to a waveform shaping circuit 25 to prevent the effect of chattering on the release signal.
connected to. The output of the waveform shaping circuit 25 is sent to the oscillation circuit 26.
connected to. The output of the oscillation circuit 26 is connected to a frequency dividing circuit 27. The frequency dividing circuit 27 is, for example, 1/2.1/3.1.
/4.115 frequency divider 27-1.27-2.27-3.2
7-4, and the outputs of these dividers are sent to multiplexer 2
Connected to 8. The output of multiplexer 28 is connected to a rising edge detection circuit 29. The output of encoder 30 is connected to multiplexer 28 .

This encoder 30 includes a release cycle setting switch 31,
32 selective opening/closing allows four types of codes, namely 00.
01, 10 and 11 are input to the multiplexer 28. Depending on these codes, the multiplexer 28 divides the frequency divider 27-
The outputs of 1.27-2.27-3.27-4 are supplied to the rising edge detection circuit 29.

The output of the CCD 14 is connected to a luminance separation circuit 33, a color signal separation circuit 34, and a vertical synchronization signal separation circuit 35.

The outputs of the luminance separation circuit 33 and color signal separation circuit 34 are FM
It is connected to an adder circuit 39 via modulation circuits 3e and 37, respectively. The output of the vertical synchronization signal separation circuit 35 is connected to a recording gate signal generation circuit 38 which responds to the output of the rising edge detection circuit 29.
connected to. The outputs of the adder circuit 39 and the recording gate signal generating circuit 38 are connected to the recording gate 40. What is the output of this recording gate 40? The recording head 42 via the amplifier 41
connected to.

In the circuit shown in FIG. 2, when the release switch 14 is actuated and a release signal is supplied to the waveform shaping circuit 25, the waveform shaping circuit 25 outputs a waveform-shaped release signal a as shown in FIG. When the release signal a is supplied to the oscillation circuit 26, the oscillation circuit 26 oscillates in response to the rise of the release signal, stops oscillation in response to the fall of the release signal,
The signal shown in FIG. 3 is output. Signal frequency divider circuit 27
When the signal is supplied to the frequency dividers 27-1 to 27-4, frequency-divided signals are output. Figure 3 shows 1/4 frequency divided signals C1 and 1/3
A divided signal C2 is shown. Divided signal C1 or C2
is input to the rising edge detection circuit 29, the rising edge detection circuit 2
A signal d1 or d2 is output in response to the rise of the nine-leaf signal C1 or C2.

On the other hand, the NTSC signal of the CCD 14 is transmitted to the luminance signal separation circuit 33, the color signal separation circuit 34, and the vertical synchronization signal separation circuit 35.
When the brightness signal, color signal, and vertical synchronization signal are supplied to FM
The signal is supplied to modulation circuits 36 and 37 and a recording gate generation circuit 38. The outputs of the FM modulation circuits 36 and 37 are sent to the adder circuit 39.
is input and added to. The addition signal is input to the recording gate 40 as a video signal shown in FIG. record gate 40
is gate-controlled by a gate signal from a recording gate signal generation circuit 38, and when this gate signal generation circuit 38 receives the output' signal of the rising edge detection circuit 29, for example, the signal d1 or d2 as a trigger signal, the first signal after this trigger signal is detected. A gate signal corresponding to one frame period of the video signal is output in response to a vertical synchronization signal appearing in the video signal. When this gate signal is input to the recording gate 40, the gate 40 opens for one frame period and allows the video signal to pass through. When the video signal is amplified by the amplifier 41 and supplied to the recording head 42, for example, one frame of the image signal is recorded on the recording disk. When the release switch 14 is pressed once to photograph one frame, one frame of video signal is recorded. When the release switch 14 is continuously pressed, frame video signals are continuously recorded on the disk at a constant cycle in response to a trigger signal generated at a cycle corresponding to the output of the selected frequency divider. That is, during this continuous imaging, the endoscope is operated according to the gastric diagnosis route, and the region at each time is automatically imaged according to the frequency division ratio of the frequency divider.

This allows the doctor to continuously capture desired images without paying attention to the release operation.

In the above embodiment, the release switch is used for both one-frame photography and periodic continuous photography, but a periodic photography switch may be provided separately.

[Effects of the Invention] As explained above, according to the present invention, during continuous internal imaging of 271 m, imaging is performed automatically according to the set cycle, so it is no longer necessary to perform a release operation each time during continuous imaging. For example, the operational burden on the doctor is reduced, allowing him to concentrate on diagnosing the valve.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram of a transendoscopic imaging device according to an embodiment of the present invention, FIG. 2 is a circuit diagram of a transendoscopic imaging device according to another embodiment of the invention, and FIG. 4 and 4 are time charts of signals for explaining the operation of the circuit of FIG. 2. DESCRIPTION OF SYMBOLS 11... Endoscope, 12... CCD, 14... Release switch, 18... Video signal processing circuit, 19...
...Photographing signal generation circuit, 20...Period setting circuit, 21
...Gate signal circuit, 22...AND gate, 23
--- Image recording device, 27... Frequency dividing circuit, 28...
Multiplexer, 29...Rise detection circuit, 31, 3
2... Cycle setting switch. Applicant's representative Patent attorney Atsushi Tsuboi ≦ Itchi Yanagi 4゛0?
χ- Procedural amendments Showa 1960. ．． @24th, Director General of the Patent Office, Mr. Ubuya Michibe 1, Indication of the case, Patent Application No. 168987/1987, 2, Name of the invention, transendoscopic image capturing device 3, Person making the amendment, Relationship with the case, Patent applicant (037) ) Olympus Optical Industry Co., Ltd. 4, Agent No. 17 Mori Building 7, 1-26-5 Toranomon, Minato-ku, Tokyo;
Contents of the amendment (1. The title of the invention is corrected to "transendoscope@imaging device." (2. The scope of claims is corrected as shown in the attached sheet. (3) Page 1, line 13 in the specification. In the 1st to 14th lines, “
"Transendoscopic imaging device" is replaced by "Transendoscopic imaging device"
I am corrected. (4) In the 11th line of page 2, the text "transendoscopy imaging device" is corrected to "transendoscope @ pupil shadowing device." (5) On page 2, line 19, the text ``1 Endoscopic imaging device'' is corrected to ``Transendoscopic imaging device.'' (6) In the first line of page 3, the phrase "transendoscope@imaging device" is corrected to "transendoscope image capturing device." On page 8, line 13 of the same page, it says ``transendoscope''.''
I am corrected. On page 8, line 20, “Position Example” and “One Example”
I am corrected. From page 8, line 20 to page 9, line 1, the phrase ``Uta mirror pupil shadowing device'' has been corrected to ``transendoscope inlay''. (10) In the second line of page 9, the phrase "transendoscopic imaging device" is corrected to "transendoscopic image placement device." 2. Scope of Claims A photographing switch provided in an endoscope, means for generating a photographing signal at a predetermined period while the photographing switch is in operation, and a '@ shadow signal generation cycle of the photographing signal generating means being arbitrarily set. and means for photographing a transendoscopic image in response to the photographing signal.

Claims (1)

[Claims] A photographing switch provided on the endoscope, means for generating a photographing signal at a predetermined cycle while the photographing switch is in operation, means for arbitrarily setting a photographing signal generation cycle of the photographing signal generating means, and responding to the photographing signal. An endoscopic photographing device comprising means for photographing transendoscopic images.