JPH0546722Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an endoscope device in which an endoscope body and a nozzle tube are separately attachable to and detachable from an endoscope adapter body. .

[Prior Art] Generally, with this type of endoscopic device, when performing surgery while observing the inside of the body, such as the inside of the nasal cavity, with an endoscope,
The surface of the objective lens cover provided at the distal end of the insertion section of the endoscope body may become cloudy, or may be contaminated with mucus, blood, or
Alternatively, the observation field of view may be blocked due to adhesion of dirt or the like.

In such a case, for example, as disclosed in Japanese Utility Model Application Publication No. 59-193401, cleaning fluid such as water or air may be sprayed from a spray nozzle provided in front or on the side of the objective lens cover. Therefore, many methods are generally used to remove fogging and deposits such as dirt from the surface of the objective lens cover.

According to this prior art, even if the surface of the objective lens cover provided on the distal end surface of the insertion section of the endoscope body becomes dirty or cloudy, the endoscope body can be cleaned without being removed from the target site in the body. , it is possible to remove cloudiness, so efficient endoscopic treatment is possible.

[Problems to be solved by the invention] However, the nozzle tube in conventional endoscope devices is often fixed to the cleaning fluid supply section provided in the endoscope adapter body, and the nozzle pipe from the jet nozzle is fixed. The ejection direction is fixed to one direction for each endoscope adapter body.

By the way, in order to efficiently clean the objective lens cover provided on the distal end surface of the insertion section of the endoscope body, the jet nozzle is directed toward the surface of the objective lens cover, and the cleaning fluid is directly applied to the surface of the objective lens cover. However, the fixed angle of the surface of the objective lens cover is limited to the viewing direction of the endoscope body, and if the viewing direction of this endoscope is different, the fixing angle of the surface of the objective lens cover The angle and the pointing angle of the jet nozzle of the nozzle tube which sprays the cleaning fluid onto the surface of this objective lens are also different.

In the conventional nozzle tube fixed to the endoscope adapter main body, the ejection direction of the jet nozzle of this nozzle tube is fixed in one direction. It is necessary to prepare one endoscope adapter body to hold and fix the endoscope body for each endoscope body with a specified viewing direction. Not only is there an economical problem, but it is also inconvenient to handle.

[Purpose of the invention] This invention was made in view of the above circumstances.
The aim is to provide an endoscope device that is economical and easy to handle, with a single endoscope adapter body capable of supporting multiple types of endoscope bodies with various viewing directions. .

[Means and effects for solving the problems] An endoscope device according to the present invention includes an endoscope adapter body having a cleaning fluid supply section, and an endoscope inserted and fixed into the endoscope adapter body. A jet is detachably connected to the main body and the cleaning fluid supply section provided on the endoscope adapter main body, and is directed toward an objective lens cover provided on the distal end surface of the insertion section of the endoscope main body. and a nozzle tube having a nozzle, and a jet nozzle that corresponds to the fixed angle of the objective lens cover provided on the distal end surface of the insertion section of the endoscope main body that is inserted and fixed into the endoscope adapter main body. A nozzle pipe having a directional angle is selected and connected to a cleaning fluid supply section provided in the endoscope adapter body.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings.

1 to 4 show a first embodiment of the present invention,
Fig. 1 is a partial cross-sectional schematic diagram of the endoscopic device, Fig. 2 is an overall schematic diagram of the endoscopic device, Fig. 3 is an enlarged view of Fig. 1, and Fig. 4 a is an enlarged partial diagram of Fig. 1. Figure 4b
is an enlarged view corresponding to FIG. 4a in another embodiment.

(Structure) Reference numeral 1 in the figure is an endoscope device, and a reservoir 2 provided in the endoscope device 1 for distilling a cleaning fluid such as water or air is connected to a pump 3 having a built-in relief valve (not shown). The pump 3 is connected via a tube 6 to an on-off valve 5, which is an example of a cleaning fluid supply section provided in the endoscope adapter body 4. Note that the reference numeral 5a is a push button for adjusting the opening degree of the on-off valve 5;
When this push button 5a is pressed, the on-off valve 5 is opened.

Further, an endoscope main body 7 is inserted and fixed into the endoscope adapter main body 4. Further, an eyepiece part 7a is provided at the base of the endoscope main body 7, and an eyepiece part 7a is provided on the distal end surface 7c of the insertion part 7b protruding from the endoscope adapter main body 4 of the endoscope main body 7. An objective lens cover 8 is attached to protect an objective lens (not shown) provided on the distal end surface 7c.

Further, a nozzle pipe 9 inserted into the endoscope adapter main body 4 is inserted into the discharge port 5b of the opening/closing valve 5.
As shown in FIG. 3, the inner diameter of the discharge port 5b of the on-off valve 5 is tapered to expand in the discharge direction. Base 9 of the nozzle pipe 9
The outer periphery of the discharge port 5b is tapered at an angle approximately equal to the inner diameter of the discharge port 5b, so that the two can be tightly connected.

Further, a positioning recess 9b is formed on the outer periphery of the base 9a of the nozzle tube 9, and the tip of the set screw 10 screwed into the endoscope adapter main body 4 is inserted into this positioning recess 9b. engaged,
Movement of the nozzle pipe 9 in the forward and backward directions and in the rotational direction is restricted.

Further, the nozzle tube 9 is supported by the endoscope adapter body 4 and extends in the same direction along the insertion portion 7b of the endoscope body 7, and has a distal end thereof that is connected to the insertion portion 7b of the endoscope body 7. A jet nozzle 9c is provided to face the surface of the objective lens cover 8 provided on the tip end surface of the portion 7b.

As shown in FIG. 4a, the viewing direction α of the endoscope main body 7 is 0°, the viewing angle β is 0°, and the tip of the nozzle tube 9 is in front of the front end surface of the endoscope main body 7. , and extends to a position where the viewing angle β is not obstructed, and the jet nozzle 9c bored at the tip of the nozzle pipe 9 is formed by, for example, burring a hole inward as shown in the figure. The injection direction angle with respect to the objective lens cover 8 is set by the burring angle.

The endoscope main body 7' shown in FIG. 4b has a viewing direction α=30° and a viewing angle β, and the jet nozzle 9c is directed toward the surface of the objective lens cover 8 of the endoscope main body 7′. The tip surface of the nozzle pipe 9' having
As described above, it extends forward of the insertion portion 7b to an extent that it does not block the viewing angle β of the endoscope main body 7'.

(Operation) Next, the operation of the embodiment with the above configuration will be explained.

(Procedure for assembling the nozzle tube) When the endoscope body 7 with the viewing direction α=0° and the viewing angle β as shown in FIG. 4a is inserted into the endoscope adapter body 4, Select the nozzle tube 9 corresponding to the viewing direction of the endoscope body 7, insert the base 9a of this nozzle tube 9 into the endoscope adapter body 4 from the front, and insert the nozzle tube 9 provided in the endoscope adapter body 4. It is inserted into the discharge port 5a of the on-off valve 5.

The discharge port 5a of the opening/closing valve 5 and the base 9a of the nozzle pipe 9 are tapered to expand in the same direction, and are tightly fitted into each other.

Next, the tip of the set screw 10 screwed into the endoscope adapter body 4 is inserted into the positioning recess 9b formed in the base 9a of the nozzle pipe 9, and the nozzle pipe 9 is moved in the forward and backward direction. , and restricts movement in the rotational direction.

As a result, the orientation direction of the jet nozzle 9c bored at the tip of the nozzle pipe 9 is set to the endoscope main body 7.
is set on the surface of the objective lens cover 8 provided at the tip of the insertion portion 7b (the state shown in FIG. 4a).

Furthermore, when an endoscope body 7' with a viewing direction α=30° as shown in FIG. 4b is inserted into the endoscope adapter body 4, loosen the set screw 10,
Remove the nozzle pipe 9, then select the nozzle pipe 9' corresponding to the viewing angle α of the endoscope main body 7',
Its base 9a (see FIG. 3) is connected to the opening/closing nozzle 5.
It is then inserted again into the discharge port 5a, and is positioned and fixed using the setscrew 10.

As a result, the orientation angle of the jet nozzle 9c formed at the distal end of the nozzle tube 9' is set to the surface of the objective lens cover 8 provided on the distal end surface of the insertion section 7b of the endoscope main body 7. Ru.

Note that the same procedure is used when inserting a nozzle tube corresponding to an endoscope main body having another viewing angle into the above-mentioned endoscope adapter 4.

(Cleaning operation of objective lens cover) As shown in Fig. 2, the endoscope adapter body 4
When performing treatment while inserting the insertion portion 7b of the endoscope main body 7 and the nozzle tube 9, which are assembled in a predetermined manner into a body cavity and observing the If the objective lens cover 8 is covered with mucus, blood, dirt, etc., or if it is cloudy and obstructs the observation field, press the push button 5a provided on the endoscope adapter body 4.

Then, the on-off valve 5 opens, and the air stored in the reservoir 2 or cleaning fluid such as water passes through the tube 6 by the pump 3 and is forced into the nozzle pipe 9 via the on-off valve 12. be done.

Next, the cleaning fluid that has flowed into the nozzle pipe 9 is sprayed onto the surface of the objective lens cover 9 from a jet nozzle 9c provided at the tip of the nozzle pipe 9.

As a result, the surface of the objective lens cover 8 is cleaned to remove fogging, dirt, etc., and the field of view of the endoscope body 7 is again ensured.

Since the cleaning fluid is sprayed directly onto the surface of the objective lens cover 8 from diagonally in front, dirt and the like can be removed efficiently.

The flow rate of the cleaning agent ejected from the ejection nozzle 9c bored in the nozzle pipe 9 is controlled by the push button 5.
It can be set appropriately by adjusting the degree of opening of the on-off valve 5 according to the amount of pressure a.

(Other Embodiments) FIG. 5 is a sectional view of essential parts of an endoscope apparatus according to a second embodiment of the present invention.

In this embodiment, the endoscope adapter body 4 itself is provided with a discharge port 5b that communicates with the on-off valve 5.
Further, a nozzle pipe insertion port 4a communicating with this discharge port 5b is bored, and a flange 9d is formed at a portion slightly toward the distal end of the nozzle pipe 9 from the base 9a. , the flange 9d of the nozzle pipe 9 is brought into contact with the end face of the nozzle pipe insertion port 4a via the packing 11, and then the presser ring 12 is screwed onto the outer periphery of the nozzle pipe insertion port 4a, and then rotated. Accordingly, the above flange 9
d is a gasket 1 attached to the end face of the nozzle tube insertion port 4a.
1 and are closely fixed.

Furthermore, when removing the nozzle tube 9 from the endoscope adapter main body 4, the operation described above is reversed.

Further, FIG. 6 is a sectional view of essential parts of an endoscope apparatus according to a third embodiment of the present invention.

In this embodiment, when inserting the nozzle tube 9 into the endoscope adapter body 4, first, the nozzle tube insertion opening 4 formed in the endoscope adapter body 4 is
The base 9a of the nozzle pipe 9 is inserted through the tube a.

Next, a claw 12a formed at the tip of the operating lever 12 is hooked into a groove 9e formed in the base 9a of the nozzle pipe 9. The approximate center of this operating lever 12 is pivotally supported via a pin 13 to a bracket 4b bored in the endoscope adapter main body 4, and an operating knob 12b of this operating lever 12
and the upper surface of the endoscope adapter main body 4,
A spring 14 is interposed to bias the operating lever 12 in the counterclockwise direction in the figure.

When the claw 12a of the operating lever 12 is engaged with the groove 9e of the nozzle pipe 9, the spring 14
The pawl 12a of the operating lever 12 receives the urging force of
connects the nozzle pipe 9 to the endoscope adapter body 4.
Press in the direction of . Then, the stepped portion 9f formed on the base 9a of the nozzle tube 9 is hooked onto the nozzle tube insertion port 4a, and is also tightly attached to the O-ring 15, thereby being fixed in a state where airtightness is maintained.

In addition, when removing the nozzle pipe 9 from the endoscope adapter main body 4, the operating lever 12
When the lever 12 is rotated clockwise in the figure against the biasing force of the spring 14, the pawl 12a of the operating lever 12 is disengaged from the groove 9e formed in the nozzle pipe 9, and the nozzle pipe 9 can be easily removed. can be extracted.

Note that the present invention is not limited to the above-mentioned embodiments; for example, the jet nozzle may be formed at the tip of the nozzle tube, and the directivity angle with respect to the surface of the objective lens cover may be set by bending this tip. good.

[Effects of the invention] As explained above, according to the invention, the nozzle tube can be exchanged with one endoscope adapter body for multiple types of endoscope bodies having various viewing directions and viewing angles. You can respond by
There is no need to prepare different types of endoscope adapter bodies for each endoscope body as in the past.
It has excellent effects such as being economical and easy to handle.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention,
Fig. 1 is a partial cross-sectional schematic diagram of the endoscopic device, Fig. 2 is an overall schematic diagram of the endoscopic device, Fig. 3 is an enlarged view of Fig. 1, and Fig. 4 a is an enlarged partial diagram of Fig. 1. Figure 4b
is an enlarged view corresponding to FIG. 4a in another embodiment,
FIG. 5 is a sectional view of a main part of an endoscope apparatus according to a second embodiment of the present invention, and FIG. 6 is a sectional view of a main part of an endoscope apparatus according to a third embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Endoscope device, 4... Endoscope adapter body, 5... Cleaning fluid supply section, 7... Endoscope main body, 7b... Insertion part, 8... Objective lens cover,
9...Nozzle pipe, 9c...Ejection nozzle.

Claims (1)

[Scope of Claim for Utility Model Registration] An endoscope adapter body having a cleaning fluid supply section, an endoscope body inserted and fixed into the endoscope adapter body, and an endoscope adapter body provided in the endoscope adapter body. and a nozzle tube that is detachably connected to the cleaning fluid supply section and has a jet nozzle that is directed toward an objective lens cover provided on the distal end surface of the insertion section of the endoscope body. .