JPH10225433A - Air and liquid feeding device for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the burden of an operator for washing work and water removing work. SOLUTION: This air and liquid feeding device for endoscope having a liquid feeding mode capable of sending liquid to an air feeding pipe line 651a and a liquid feeding pipe line 652a and an air feeding mode capable of sending air to the pipe line 651a and the pipe line 652a is provided with a control means (washing control means 64) for executing the liquid feeding mode or the air feeding mode in a set order to reduce the operator's burden for the washing work and water removing work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an air / liquid feeding device in a medical endoscope.

[0002]

2. Description of the Related Art Electronic endoscopes are used in the duodenum, rectum, large intestine,
It is widely used for treating and examining living bodies such as the esophagus, otolaryngology, and bladder.

[0003] The air supply device for the endoscope functions to remove dirt and sticky substances adhering to the observation optical system at the distal end of the endoscope during the operation. That is, if dirt or sticky substance adheres to the observation optical system during the operation, the observation field of view of the endoscope is obstructed. After that, it is necessary to further supply the gas from the air supply path to the tip air supply nozzle to remove the liquid attached to the observation optical system.

[0004] However, after the operation, the endoscope is removed from the patient's body, and then the air and liquid supply lines of the endoscope are contaminated with dirt and sticky substances that have flowed back from the body and, in some cases, in contrast. Since a drug such as an agent is attached, it is further necessary to periodically clean or disinfect the inside of the pipeline.

[0005] Conventionally, as means for cleaning an air supply / liquid supply line of an endoscope, a pipe end is detached from the endoscope and a cylinder or the like of a syringe is connected to the end so that a cleaning liquid or gas is supplied into the tube. A method of repeatedly injecting and connecting the air supply line and the liquid supply line by some means, and sending the liquid to the air supply line,
In addition, a method has been employed in which cleaning is performed by supplying air to a liquid supply pipe.

[0006]

However, the above-mentioned conventional means for cleaning the gas supply and liquid supply lines of an endoscope has a problem that the operation is complicated and extremely troublesome for the operator.

That is, in the cleaning means using a syringe or the like, it is necessary to connect a cylinder or the like to the ends of the air supply line and the liquid supply line and to inject the liquid and the gas alternately and repeatedly. It is messy and requires a very long time to clean.

In a method of connecting an air supply line and a liquid supply line and repeating liquid supply and air supply to both the air supply line and the liquid supply line, a surgeon pushes a cleaning push during a cleaning operation. The problem is that you have to hold down the button and the task is rather cumbersome.

Further, there is also used a cleaning apparatus which accommodates a scope including an air supply line and a liquid supply line, and which automatically cleans the inside of the line without manual operation. In this case, the setting of the scope is troublesome, and the cleaning takes a relatively long time.

The present invention has been achieved as a result of studying to solve the above-mentioned problems of the conventional endoscope air / liquid supply apparatus.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an endoscope air / liquid supply device that can reduce the burden on the operator for cleaning and water removal.

[0012]

In order to achieve the above object, the present invention provides a liquid supply mode in which liquid can be supplied to an air supply line and a liquid supply line, and a liquid supply mode in which the liquid is supplied to the gas supply line and the liquid supply line. An endoscope air / liquid supply device having a gas / air supply mode includes a control unit for executing the liquid supply mode or the gas supply mode in a set procedure.

According to the present invention, since the liquid supply mode or the air supply mode is executed in the set order by the control means, the burden on the operator for the cleaning work and the water removal work can be reduced.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an endoscope according to an embodiment of the present invention.

FIG. 1 is a perspective explanatory view showing an outline of a gas supply / feeding device for an endoscope according to the present invention, FIG. 2 is a partially enlarged perspective view of a distal end portion of the endoscope in FIG. 1, and FIG. FIG. 4 is an explanatory diagram of a circuit / circuit connection diagram showing a first embodiment of a cleaning control means in the air / liquid feeding device for an endoscope of the present invention;
FIG. 5 is an explanatory view of a pipeline / circuit connection showing the second embodiment, and FIG.
FIG. 7 is an explanatory view of a pipeline / circuit connection showing the third embodiment.

In FIG. 1, reference numeral 1 denotes an endoscope, which is a distal end 2 having a solid-state image pickup device (hereinafter abbreviated as CCD), an observation optical system, and the like. It is composed of a bent portion 3 that moves up and down, left and right, a guiding portion 4 and a main body portion E.

The main body E has an operation knob 5 for operating the bending portion 3 and various other operation buttons and a power supply (not shown). The air supply / liquid supply line 6 is connected to the main body E. I have.

Further, one end of the air / liquid supply line 6 is connected to a liquid supply bottle 63 having an air supply pump 62, and the other end is provided with an air supply nozzle 23 of the endoscope distal end portion 2 shown in FIG. And a liquid supply nozzle 24.

In FIG. 2, reference numeral 21 denotes an observation optical system comprising a lens window having a built-in CCD or the like;
b is an illumination fiber, 25 is a forceps port used for biopsy or the like, and the air supply nozzle 23 and the liquid supply nozzle 24 are used.
Is used for cleaning and removing dirt and the like adhering to the surface of the observation optical system 21 during the operation.

The air / liquid feeding device for an endoscope according to the present invention having the above-described structure is provided with a cleaning control means 64, that is, an electromagnetic opening / closing valve and a timer circuit, in the middle of the gas / liquid feeding line 6. Is provided.

Therefore, the endoscope used in the present invention includes:
An entire circuit as shown in FIG. 3 is configured.

That is, in FIG. 3, the operation section 7 and the power supply section 8 are connected to a light source section 9, a CCD image processing section 10 and an air / liquid supply section 11, and these light source section 9, image processing section The air supply / liquid supply unit 11 is connected to the entire endoscope via a connector 12 respectively.

The air supply / liquid supply unit 11 is further connected to each of the electromagnetic switching valves 641, 642, 643, 644 of the cleaning control means 64 via the electromagnetic valve control unit 61 shown in FIG. 4 (dotted line).

The cleaning control means 64 which is a feature of the present invention comprises:
One end of the air supply line 651 and the liquid supply line 652 is connected to the liquid supply bottle 63 provided with the air supply pump 62, and the other end is in the middle of the cleaning line connected to the air supply nozzle 23 and the liquid supply nozzle 24. In this embodiment, a plurality of solenoid on-off valves are combined and linked with a timer circuit incorporated in the solenoid valve control unit 61.

That is, in FIG.
The first electromagnetic on-off valve 641 and the second electromagnetic on-off valve 642 are connected in series to the air supply line 651, and the third electromagnetic on-off valve 643 and the fourth electromagnetic on-off valve 644 are connected in series to the liquid supply line 652, respectively. The middle position between the first electromagnetic on-off valve 641 and the second electromagnetic on-off valve 642 in the air supply line 651, and the third electromagnetic on-off valve 643 and the fourth electromagnetic on-off valve 644 in the liquid supply line 652. The intermediate position is connected to the intermediate position by a communication pipe 653, and the operation of each of the solenoid on-off valves 641, 642, 643, and 644 is controlled by a timer circuit (not shown) incorporated in the solenoid valve control unit 61 as shown in the following table. It works like this.

[0026]

[Table 1] That is, in the intraoperative mode, the solenoid on-off valves 641, 6
When all of the valves 42, 643 and 644 are turned off, the air supply and liquid supply are stopped, and the solenoid valves 641 and 642 are turned off.
N, if the electromagnetic on / off valves 643 and 644 are turned off, only air supply to the air supply line 651 is performed, and if the electromagnetic on / off valves 641 and 642 are turned off and the electromagnetic on / off valves 643 and 644 are turned on, the liquid supply line 652 is provided. Only the liquid transfer to is performed.

In the postoperative cleaning mode, if the electromagnetic on / off valve 641 is turned off and the electromagnetic on / off valves 642, 643, and 644 are turned on, the liquid in the liquid feed bottle 63 is changed from the electromagnetic on / off valve 643 to the electromagnetic on / off valve 644. To the solenoid valve 6
From 43, the liquid flows through the communication pipe 653 to the electromagnetic on-off valve 642, and the liquid is sent through both the air supply pipe 651a and the liquid feed pipe 652a, and the two pipes are washed for a certain period of time.

Next, when the timer is automatically switched and the electromagnetic on-off valve 643 is turned off and the electromagnetic on-off valves 641, 642 and 644 are turned on, the gas sent from the air supply pump 62 is transmitted from the electromagnetic on-off valve 641 The gas flows to the electromagnetic on-off valve 642 and from the electromagnetic on-off valve 641 through the communication pipe 653 to the electromagnetic on-off valve 644, and the air supply line 651 a and the liquid supply line 65.
The air is sent to both of 2a, and both pipes are dried for a certain period of time.

Therefore, the above-described air supply / liquid supply operation is performed as follows.
If a timer circuit is set so as to be repeated a required number of times at a fixed time, a reliable pressurization operation can be performed automatically by pressing the cleaning operation button (not shown) of the operation unit once. It will be achieved in a short time.

In the first embodiment shown in FIG. 4 described above, it is necessary to adjust the pressure of the air supply pump 62 so that gas and liquid do not flow back through the communication pipe 653. By providing a non-return valve (not shown) in the, it is possible to eliminate the risk of backflow.

The second embodiment shown in FIG. 5 is different from the first embodiment in that a fifth solenoid on-off valve 645 is further provided for the communication pipe 653 and the operation thereof is linked to a timer circuit. This is different from the embodiment.

In the second embodiment, by opening and closing the fifth solenoid on-off valve 645 in accordance with the air supply or liquid supply mode, the air supply and liquid supply in the communication pipe 653 can be made more reliable. In addition, the efficiency of pipe cleaning can be further enhanced.

Further, the third embodiment shown in FIG.
The point that the fourth solenoid on-off valve is omitted and that the first
And is different from the second embodiment.

That is, in FIG. 6, the cleaning control means 64
Is provided with a first electromagnetic on-off valve 641 in the air supply line 651, and a second electromagnetic on-off valve 642 in the liquid supply line 652, respectively.
The intermediate position between the first electromagnetic on-off valve 641 and the air supply nozzle 23 in the air supply line 651 and the intermediate position between the second electromagnetic on-off valve 642 and the liquid supply nozzle 24 in the liquid supply line 652 are: A third electromagnetic on-off valve 643 is provided on the communication pipe 653, and the operation of each of the electromagnetic on-off valves 641, 642 and 643 is controlled by a timer circuit incorporated in the electromagnetic valve control unit 61. (Not shown) and operates as follows.

That is, in the intraoperative mode, if all of the solenoid valves 641, 642 and 643 are turned off,
If the air supply / liquid supply is stopped and the electromagnetic on-off valve 641 is turned on and the electromagnetic on-off valves 642 and 643 are turned off, the air supply line 6
Only the air supply to 51a is turned on, and the solenoid on-off valve 642 is turned on.
If the electromagnetic on-off valves 641 and 643 are turned off, only liquid supply to the liquid supply pipe line 652a is performed.

Then, in the post-operative cleaning mode, if the electromagnetic on / off valve 641 is turned off and the electromagnetic on / off valves 642 and 643 are turned on, the liquid in the liquid feed bottle 63 will be turned off.
2 to the liquid sending nozzle 24, and from the electromagnetic on / off valve 642 to the air sending nozzle 23 through the communication pipe 653 and the electromagnetic on / off valve 643, and to the air sending line 651a and the liquid sending line 652.
The liquid is sent to both of them, and the two channels are washed for a certain period of time.

Next, the timer is automatically switched to turn off the electromagnetic on-off valve 642 and the electromagnetic on-off valves 641 and 643
Is turned on, the gas sent from the air supply pump 62 flows from the electromagnetic on / off valve 641 to the air supply nozzle 23 and from the electromagnetic on / off valve 641 to the liquid supply nozzle 24 through the communication pipe 653 and the electromagnetic on / off valve 643. Then, air is supplied to both the gas supply pipe 651a and the liquid supply pipe 652a, and drying of both pipes is performed for a certain period of time.

In the third embodiment, it is possible to reduce the size and labor of the apparatus as compared with the first and second embodiments.

Although the cleaning control means 64 is provided outside the endoscope 1 in FIG. 1 described above, it may be provided inside the endoscope operating section 7.

Further, in each of the above-described embodiments, an example has been described in which air is supplied or liquid is supplied to both the gas supply pipe 651 and the liquid supply pipe 652 at the same time. Of course, it is also possible to repeat air supply or liquid supply to only one of the path 651 and the liquid supply pipe line 652.

The gas supply line 651 and the liquid supply line 6
In addition to the method of connecting to the air supply nozzle 23 and the liquid supply nozzle 24 as in each of the above-described embodiments, the distal end of the pipe 52 is connected to the ends of both conduits to supply liquid / air supply from a single nozzle. May be adopted.

Further, in each of the above-described embodiments, the operation of cleaning the inside of the duct after the operation has been described. However, it is of course possible to use the present apparatus for cleaning the observation optical system during the operation.

[0043]

As described above in detail, according to the present invention, it is possible to reduce the burden on the operator for the washing operation and the water removing operation.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view schematically showing an air / liquid feeding device for an endoscope according to the present invention.

FIG. 2 is a partially enlarged perspective view of the distal end portion of the endoscope in FIG. 1;

FIG. 3 is an explanatory diagram of a circuit of an endoscope operation unit.

FIG. 4 is an explanatory view of a pipe / circuit connection showing a first embodiment of a cleaning control means in the air / liquid feeding device for an endoscope according to the present invention.

FIG. 5 is an explanatory view of a pipeline / circuit connection showing the second embodiment.

FIG. 6 is an explanatory view of a pipeline / circuit connection showing the third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope 6 ... Air supply and liquid supply pipeline 7 ... Operation part 21 ... Observation optical system 23 ... Air supply nozzle 24 ... Liquid supply nozzle 61 ... Electromagnetic valve control part 64 ... Cleaning control means 641 ... First electromagnetic On-off valve 642 Second electromagnetic on-off valve 643 Third electromagnetic on-off valve 644 Fourth electromagnetic on-off valve 645 Fifth electromagnetic on-off valve 651, 651a Air supply line 652, 652a Liquid supply line 653 … Communication pipe E… Main body

Claims (2)

[Claims] 1. An endoscope having an air supply mode capable of supplying liquid to an air supply line and a liquid supply line and an air supply mode capable of supplying air to the air supply line and the liquid supply line. A liquid supply device for an endoscope, wherein the liquid supply device includes control means for executing the liquid supply mode or the gas supply mode in a set procedure. 2. The air / liquid supply device for an endoscope according to claim 1, wherein the control unit executes the liquid supply mode or the gas supply mode for a set time.