JPH05103753A - Endoscopic washing catheter device - Google Patents

Abstract

PURPOSE:To provide an endoscopic washing catheter device enhanced in washing effect in which cleanliness is further improved without staying a dirt, and the dirt in a washing nozzle can be effectively removed at the time of endoscopic observation. CONSTITUTION:A nozzle part 22c is provided on the top end side of a slender catheter body capable of being inserted to the channel 18 of an endoscope having an observing window 13 exposed to a top end part 7 in such a manner as to be capable of being inserted to and pulled out from the channel 18. The nozzle part 22c is plurally divided in the axial direction from the neck part 22b and energized in the extending direction. When the neck part 22b on the body top end side of the catheter body is recessed into the channel, the nozzle part 22c is contracted in diameter from the neck part 22b plurally divided and energized in the diameter extending direction to form a nozzle shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope cleaning catheter device that can be inserted into a channel of an endoscope and is used for cleaning an observation window or the like.

[0002]

2. Description of the Related Art In the medical field, an endoscope capable of observing a deep part in a body cavity by inserting the body cavity or the like and performing a medical treatment or the like by using a treatment tool if necessary is used in the medical field. It has become widely used.

Also in the industrial field, endoscopes are widely used for inspecting the inside of jet engines or the inside of plants.

For example, as shown in FIG. 5, the distal end side of the conventional medical endoscope is at the distal end portion 52 of the insertion portion of the medical endoscope.
Is formed with an observation window 53, an objective lens system 54 is attached to the observation window 53, and an optical image is formed on the front end surface of an image guide 55 arranged on the focal plane of the objective lens system 54. There is.

An air / water feeding channel 56 is formed adjacent to the observation window 53, and a cleaning nozzle 57 is attached to the tip of the air / water feeding channel 56. The tip of the nozzle 57 is bent so that the observation window 53
Is disposed so as to face the outer surface of the objective lens system 54 that is attached to the objective lens system 54 (observation window 5
The outer surface of 3) can be cleaned.

[0006]

However, since the nozzle is bent as in the above-mentioned conventional example, when an endoscope is used, dirt and the like are likely to collect in the bent portion of the nozzle, and the disinfectant solution after use, etc. It becomes difficult to completely remove and sterilize even by the disinfection treatment by means of, and if this disinfection treatment is not perfect, there is a possibility that it may become a breeding source of various bacteria.

Further, when dirt or the like adheres to the cleaning nozzle during observation of the endoscope or the like, when cleaning the observation window of the endoscope or the like, the direction of discharge of the cleaning water from the cleaning nozzle is changed. Therefore, the intended cleaning effect may not be obtained.

The present invention has been made in view of the above circumstances, and it is possible to improve cleanliness without accumulating dirt and the like, and, in addition, dirt and the like in the cleaning nozzle during observation of the endoscope. It is an object of the present invention to provide an endoscope cleaning catheter device capable of effectively removing this dirt even if adhered thereto, and enhancing the cleaning effect.

[0009]

In order to achieve the above object, a cleaning catheter device for an endoscope according to the present invention is a cleaning device that can be inserted into and removed from a channel of an endoscope whose observation window is exposed at its distal end. A catheter device for medical use, wherein a nozzle portion is provided on the distal end side of a slender catheter body that can be inserted into the above-mentioned channel via a neck portion, and the nozzle portion is divided into a plurality of portions in the axial direction from the neck portion and attached in the expanding direction. When the neck portion on the distal end side of the catheter body is sunk into the channel by urging, the nozzle portion is reduced in diameter from the neck portion that is divided into the plurality and is urged in the radial expansion direction to form a nozzle shape. It is a thing.

[0010]

[Operation] In the above configuration, when observing with an endoscope, first, the catheter body and neck of the cleaning catheter device are inserted into the channel of the endoscope with the observation window exposed at the distal end. A nozzle shape is formed by reducing the diameter of the nozzle portion from a neck portion that is divided into a plurality of portions and is urged in the radial direction.

Next, during the observation with the endoscope, if dirt or the like adheres to the observation window of the endoscope, the fluid is discharged from the nozzle portion of the cleaning catheter device which is formed with a reduced diameter. To remove dirt and the like from the observation window.

Here, when dirt or the like is attached to the nozzle portion of the cleaning catheter device, the neck portion of the cleaning catheter device is projected from the distal end portion of the endoscope to clean the cleaning catheter device. The nozzle portion biased in the expanding direction of the device is divided into a plurality of portions in the axial direction, and a fluid is caused to flow to remove dirt and the like from the nozzle portion.

Then, again, the catheter main body and the neck portion of the cleaning catheter device are inserted into the channel of the endoscope by inserting them into the channel, and the nozzle portion is divided into the plurality of portions and is urged in the radial direction. After the diameter is reduced to form a nozzle shape, a fluid is jetted from the nozzle portion having the nozzle shape to remove dirt and the like in the observation window.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention, FIG. 1 is an explanatory view of the tip of an endoscope with a cleaning catheter opened, FIG. 2 is an explanatory view of the entire endoscope, and FIG. Is an explanatory view showing the tip of the cleaning catheter, and FIG. 4 is an explanatory view of the endoscope tip in a state where the cleaning catheter is not opened.

In FIG. 2, reference numeral 1 denotes, for example, an endoscope for observing a chest cavity. The endoscope 1 has an observing means built therein and is elongated and flexible so that it can be inserted into a body cavity or the like. The insertion portion 2, the wide-width operation portion 3 continuously provided at the rear end of the insertion portion 2, and the eyepiece portion 4 formed at the rear end of the operation portion 3.
And a light guide cable 5 extending from a side portion of the operation portion 3, and an end portion of the light guide cable 5 is detachably connected to a light source device (not shown) via a connector (not shown). ing.

The insertion portion 2 has a hard tip portion 7 from the tip side.
And a bending portion 8 which is freely bendable, and a flexible tube portion 9 which is flexible. The bending portion 8 can be bent by operating the bending knob 11 provided on the operation portion 3. There is.

That is, by connecting the connector of the light guide cable 5 to the light source device, the white light of the lamp (not shown) in the light source device is applied to the end face of the light guide (not shown), and the illumination transmitted by the light guide is transmitted. The light is emitted forward from the illumination window 12 to which the end face on the side of the tip portion 7 is attached, and illuminates a subject (not shown).

The object illuminated by the illumination light is an optical image on one end face of an image guide (not shown) fixed to the focal plane of the objective lens system (not shown) provided in the observation window 13 of the tip portion 7. Are tied together. By this image guide, an optical image is transmitted to the other end surface on the eyepiece 4 side. An eyepiece lens (not shown) is arranged so as to face the other end surface, and magnified observation can be performed with the naked eye through the eyepiece lens.

A forceps port 14 is provided at the distal end portion 7 of the insertion part 2, and the forceps port 14 of the operation part 3 is provided through a forceps channel (not shown) in the insertion part 2. It is connected to a forceps channel opening (not shown) provided on the side portion, and various treatment tools can be inserted therethrough.

Further, the endoscope 1 is provided with a channel (not shown) through which a cleaning catheter 22 described later can be inserted and removed. This channel is inserted from the insertion port 17 of the operation section 3 to the insertion section. It goes through the inside of 2 to the end opening 18 of the tip 7. This channel is formed of a flexible tube in the insertion portion 2, and the tip of this tube is fixed to a mouthpiece fixed to the through hole of the tip portion 7.

The cleaning catheter 22 is inserted into the channel of the endoscope 1 and can be used as a cleaning means for cleaning the outer surface of the observation window 13.

As shown in FIG. 3, the tip side of the cleaning catheter 22 is an elongated catheter body 22a which can be inserted into the channel, a neck portion 22b provided on the tip side of the catheter body 22a, and this neck portion. The nozzle portion 22c is formed by bending the nozzle portion 22b toward the observation window 13 on the tip side of the nozzle 22b. The neck portion 22b to the nozzle portion 22c are divided into two in the axial direction and urged in the expanding direction. In the state where the neck portion 22b is immersed in the channel, the nozzle portion 22c is reduced in diameter from the two-divided neck portion 22b that is biased in the diameter expanding direction to form a nozzle shape. ..

The cleaning catheter 22 is inserted from the rear end side into the channel through the terminal opening 18, and is detachably connected to the cleaning liquid supply port 24 at the portion exposed from the insertion port 17. Has been done. The cleaning liquid supply port 24 can be connected to a water supply liquid supply means (not shown) for supplying liquid or gas to the tip side. Therefore, the cleaning catheter 22 can be replaced with a new one each time the endoscopic examination is performed, or the cleaning catheter 22 can be removed and sterilized before use.

The neck 22 of the cleaning catheter 22 is
The axial division from b to the nozzle portion 22c is not limited to two divisions, and may be three divisions or more.

Next, the operation of the above configuration will be described.

First, in observing with an endoscope, the washing catheter 22 is inserted from the rear end side into the channel in the insertion portion 2 through the terminal opening 18 of the tip portion 7 of the insertion portion 2. 22 catheter body 22a
The neck portion 22b is inserted into the channel until it is retracted, and the rear end portion of the cleaning catheter 22 is inserted into the operating portion 3.
It is led to the outside from the insertion port 17 and is connected to the cleaning liquid supply port 24. For this reason, the nozzle portion 22c on the front end side of the neck portion 22b, which is divided into two and biased in the radial direction, is reduced in diameter to form a nozzle shape. Then, the nozzle portion 22c having this nozzle shape is directed toward the observation window 13 of the endoscope 1.

The cleaning liquid supply port 24 is connected to water supply liquid supply means (not shown) for supplying a liquid or gas to the tip side.

Next, the insertion section 2 of the endoscope 1 is inserted into the body cavity for observation. When dirt or the like adheres to the observation window 13 of the endoscope 1 during observation with the endoscope 1, fluid is discharged from the nozzle portion 22c formed by reducing the diameter of the cleaning catheter 22. To remove dirt and the like from the observation window 13.

Here, when dirt or the like is attached to the nozzle portion 22c of the washing catheter 22, the rear end portion of the washing catheter 22 exposed from the operating portion 3 is moved forward (insertion portion 2). Direction), the neck portion 22b of the cleaning catheter 22 is projected from the distal end portion 7 of the endoscope 1, and the nozzle portion 22c biased in the expanding direction of the cleaning catheter 22 is moved. It is divided into two in the axial direction and a fluid is flowed to remove dirt and the like from the nozzle portion 22c.

After that, again, the rear end of the cleaning catheter 22 exposed from the operation portion 3 is pulled backward and moved, and the catheter body of the cleaning catheter 22 is inserted into the channel of the endoscope 1. 22a and neck 22
After immersing b, the nozzle portion 22c is formed by reducing the diameter of the nozzle portion 22c from the neck portion 22b which is divided into a plurality of portions and is biased in the radial direction, and then the nozzle portion 22 having the nozzle shape is formed.
A fluid is jetted from c to remove dirt and the like in the observation window.

As described above, the cleaning catheter is removable, and even during observation with the endoscope,
Since the dirt can be removed, it is possible to effectively prevent the accumulation of dirt and the like.

[0033]

As described above, according to the present invention, there is provided a cleaning catheter device which is insertably / removably insertable into a channel of an endoscope having an observation window exposed at its distal end. A nozzle portion is provided on the tip side of the possible slender catheter body through the neck portion, and the nozzle portion is divided into a plurality of portions in the axial direction from this neck portion, and is urged in the expanding direction so that the neck portion on the tip side of the catheter body is When immersed in the channel, the nozzle shape is formed by reducing the diameter of the nozzle portion from the neck portion that is divided into the plurality and is biased in the radial expansion direction, so that cleanliness is maintained without collecting dirt and the like. Further, it is possible to further improve, and it is possible to effectively remove dirt and the like adhering to the inside of the cleaning nozzle even when observing with an endoscope, etc., and it is possible to enhance the cleaning effect.

[Brief description of drawings]

FIG. 1 is an explanatory view of the tip of an endoscope with a cleaning catheter opened according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the entire endoscope according to an embodiment of the present invention.

FIG. 3 is an explanatory view showing the tip of a cleaning catheter according to an embodiment of the present invention.

FIG. 4 is an explanatory view of the distal end of the endoscope in a state in which the cleaning catheter according to the embodiment of the present invention is not opened.

FIG. 5 is an explanatory view of a structure of a distal end side of an endoscope according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Endoscope 7 Tip part 13 Observation window 18 End opening part (channel) 22 Cleaning catheter 22a Catheter body 22b Neck part 22c Nozzle part

Front page continuation (72) Inventor Nobuhiko Washizuka 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Yasuhiko Omagari 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optics Kogyo Co., Ltd. (72) Inventor Ichiro Nakamura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Yoshinao Daimei 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optics Industry Co., Ltd.

Claims (1)

[Claims] 1. A cleaning catheter device that can be inserted into and removed from a channel of an endoscope having an observation window exposed at its tip, and a neck portion is provided on the tip side of an elongated catheter body that can be inserted into the channel. The nozzle part is provided via the, and the nozzle part is divided into a plurality of parts from the neck part in the axial direction,
When the neck portion on the catheter body tip side is sunk into the channel by urging in the expanding direction, the nozzle portion is reduced in diameter from the neck portion which is divided into the plurality and is urged in the diameter expanding direction to form a nozzle shape. A cleaning catheter device for an endoscope characterized by being formed.