JPS6080426A - Air sending controller of endoscope light source 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 an air supply control device, and particularly to an air supply control device for an endoscope light source device.

[Prior art]

The endoscope light source device not only supplies illuminating light and photographing light to the endoscope, but also has an air supply ponder that supplies gas such as air and gas. In conventional endoscope light source devices, when the endoscope connector is removed from the light source socket during air supply, the air tube of the light source device is exposed, and unnecessary air is discharged from the air tube, causing discharge noise and noise. Vibrations, etc. occurred, causing inconvenience.

〔the purpose〕

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an air supply control device for an endoscope light source device that stops or reduces air supply when an endoscope connector is removed or removed.

〔overview〕

According to this invention, there is provided a disconnection detection circuit that detects disconnection of the endoscope connector, and an air supply control section that stops or reduces air supply in response to disconnection detection by the disconnection detection circuit. An air supply control device for an endoscope light source device is provided.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a circuit of an air supply control device for an endoscope light source device. According to this circuit, the CPU 11 connects the R
OM74, RAM15゜Solarel port interface (PPI) 16゜Parallel interval timer (
PIT) l 7, ri022 circuit (CLOCK) 1
B, connected to the counter (CTC) 19 and the programmable keyboard (PKDC) 2θ. PKD'C2
0 is connected to the display node 4/F le 21. PP engineering 16
is connected to a 7-man interface 22 for detecting removal and removal of the endoscope, which will be described later. The PIT 77 is connected to the air supply control circuit 23 and the zero cross detection circuit 24. The flip-flop (F/F) 25 divides the frequency of CrCl2 (D output and converts the PI
Provided to supply T17.

The photointerrupter 22 is installed in the light source socket 31 of the light source mounting, as shown in FIG. The light source socket part 3) is provided with a guide hole 34 into which the light guide part 33 of the endoscope connector 32 is inserted. This guide hole 3
An actuator hole 35 is provided in communication with 4. An actuator 36 made of an elastic material is disposed in the -f cuttenieator hole 35. One end of this actuator 36 is attached to a socket base 37, and a protruding portion 36t
h projects into the guide hole 34. Actuator 36
A light shielding plate 38 is provided at the other end, and the shifted interlug 22 is shielded from light by this light shielding plate 38. When the endoscope connector 32 is connected to the light source socket part 31, the actuator 36 is pushed out by the light guide part 33 and remains at the dotted line position. At this time, the light shielding plate 3 of the actuator 36
8 separates from the photo incluster 22, and the photo inrush 0 22 is optically coupled.

Next, the operation of the air supply control device will be explained with reference to the flowcharts of FIGS. 4 and 5.

When the endoscope connector 32 is connected to the light source socket part 31 and the power source 26 is turned on, the power source 26 changes to 50Hz or 6011Hz.
It is determined whether In this case, when the zero-crossing detection signal detected by the zero-crossing detection circuit 24 is input to the PIT 17, the frequency is 50Hz or 60Hz from the zero-crossing interval.
Hz is determined. The feeding pressure data table set corresponding to 50Hz and 601 (z) is stored in the RAM 15, and the feeding pressure data table is specified according to the determination result of 50.Hz or 60Hz. Data of 3, 2, and 1.0 are provided corresponding to strong, medium, weak, and stop of the supply pressure, respectively.If the supply pressure is set to "medium", that is, 2, for example, the supply pressure of 50Hz is set. 2” data is read from the data table.
It is stored in a predetermined memory area of AMl5. Also, this R
AMJ,! If the frequency is determined to be 50 Hz, ``1#'' is stored in i, and if the frequency is determined to be 60 Hz, IIO# is stored. After this, 5'' is set in the soft counter of RAMJ5.Next, whether or not an endoscope (scope) is inserted is determined from the state of photointerrupter 22 via PP116.Scope insertion state Therefore, it is checked whether or not the set supply pressure is o''. Since this set supply pressure is 2", it is determined whether the set supply pressure is a little less than 1", that is, 1". Since the determination is No, the supply pressure is "2", that is, "medium", and the air supply control circuit 23 is activated. In this case,
A signal with a cycle corresponding to the supply pressure data II 2 # extracted from the supply pressure data table in the RAM 15 is supplied to the photocoupler 27 of the air supply control circuit 23, and the thyristor is activated in synchronization with the ON/OFF cycle of the photocoupler 27. 28 is turned off, and the air supply pump 29 is rotated in accordance with this cycle, and air is supplied at the tIS supply pressure.

When the supply pressure is set to 6", Pa1# is subtracted from the soft counter, and it is determined whether the subsequent content of the soft counter is 0#.

At this time, since the counter is at 4'', the data indicating the air supply pressure is "medium" is read out, and the air supply control circuit 23 is operated at the air supply pressure "6 medium". In this way, even though the air supply pressure is started at 'weak', it is driven at 'medium' air supply pressure.If the air supply pump 29 is started at '1' or less, stable air supply cannot be obtained. For this reason, it is first set to "Medium" and then set to "Low". The time it takes to switch from "Medium" to "Low" corresponds to the soft counter setting value "5#". is subtracted every cycle of the flow, and this cycle takes 100 milliseconds, so
It switches from "medium" to "low power" in 500 milliseconds of the cycle.

When the air supply ponder 29 is operated, air is supplied to the endoscope air supply pipe 4 via the air supply pipe 39 provided at the light source connector section 3.
sent to 0. When the endoscope connector 32 is removed from the light source socket portion 3 during this air supply, the photointerrupter 22 is shielded from light and the optical coupling is completely released. The CPU II detects the optical coupling release of the photointerrupter 22 and recognizes that the endoscope connector 32 has been removed. Then, the CPU
II reads out the air supply pressure data 110 I+ from RAltl, 5, and causes the air supply control circuit 23 to stop air supply via P and ITJ7. As a result, the air supply song 29 is stopped and the air supply is stopped. As a result, no air is discharged through the air pipe 39 provided in the light source socket portion 3, and the air pipe 39 no longer generates exhalation sounds, vibrations, etc.

When the CPU 11 recognizes that the endoscope has been removed, the stop data is 0.
”And Naru.

〔Effect of the invention〕

As explained above, according to the present invention, air supply is stopped or reduced when the inner mirror connector is removed from the light source socket, so that air is not unnecessarily supplied from the 9L source socket of the light source device. Become. Therefore, exhalation noise, vibration, etc. are not generated, and noise when the endoscope connector is removed and removed is prevented.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an air supply control device for a V1 endoscopic light source device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a C source connector, and FIGS. 3 and 97.4 is a fc-th flowchart diagram explaining the operation of the air supply control device in Fig. 1. 22... Photo interrupter, 23... Air supply control circuit, 24... Zero cross detection circuit 1.'3 No. ...Light source socket part, 32...Endoscope connector 1.?, 7.
...Light guide section, 39...Air pipe. 2nd Prisoner No. 3n Figure 4 Display of the incident 05 (1980-18 Ryo 95 Ryo issue and Ming's name Relationship with the case of the person who pressurized the air supply control device of the endoscope light source device Patent issued 1 person name) (037) Olympus Optical Industry Co., Ltd.? Jl (embedded 1 correct target details) Jyokichi (no change in content) procedural amendments of 2 drawings ≧μ Moon Wakasugi, Commissioner of the Japan Patent Office Kazuo 1, Indication of the case Special 1. No. 58-187957 2 Name of the invention Air supply control device for endoscope light source device: 3. Relationship with the 'i'ili corrective person case Patent ratio 1 People's Hats (037) Olympus Optical 2 [Niguri Co., Ltd. Juice 4,
Agent 5 Voluntary Amendment 7, Contents of Amendment (1) In the first line of page 3 of the specification, the phrase "control]-roll path line" is corrected to read "control address bus line." (2) On the 6th line of page 3, the phrase ``1 programmable keyboard'' is corrected to ``programmable keyboard display controller.'' (3) In the second line of page 5, correct rRAM'15J to rRAM14J. (4) On page 5, lines 6 and 7, “3°2.1
．． Data of 0 is provided. ” [°3”
There is data that can be distinguished in the software by 1゛2'', ``1°°, and ``O゛.'' is corrected. (5) On page 5, line 20, the answer is 1 No.'', followed by ``Next, it is determined whether the set supply pressure is medium'', that is, °2''. Since the judgment is YES," is added. (6) In the second line of page 6, the text "1RAM15" is corrected to rRAM14J. (7) On page 6, line 7, ``rotated''
"I am driven," he corrected. (8) Insert the following sentence between the 8th and 9th lines of page 6. When the supply pressure is set to ``strong'', that is, 8 degrees, almost the same control as when the above-mentioned supply pressure is set to ``medium'' is performed.However, the setting The supply pressure is “°”
Since the determination is No, the air supply pressure is set to "3". That is, the air supply control circuit 23 is operated at "high". (9) Figures 1 and 4 of the drawings will be corrected so that they are attached to the attached sheet. (10) Shown as an attached sheet in Figure 2 of the drawings JJ: Sea urchin? Insert No. 1 r36aJ. 21J Figure 4

Claims (1)

[Claims] 1) A light source side air pipe connected to the endoscope air pipe through the light source socket and the endoscope connector, an air supply means connected to the light source side air pipe for supplying air, and the removal of the endoscope connector. An air supply system for an endoscope light source device comprising a withdrawal detection means for detecting dislodgement, and a means for stopping or reducing the air supply by the air supply means in response to the withdrawal detection by the withdrawal detection means. Control device.