JPH05146396A - Catheter apparatus for washing - Google Patents

Abstract

PURPOSE:To provide a catheter apparatus for washing which enables the washing of an external surface of an observation window and the disinfecting of an endoscope easily and moreover, achieves a finer outer diameter of the tip part of the endoscope. CONSTITUTION:A catheter 22 insertable into a channel 16 of an endoscope is provided to introduce a fluid from one end side to the other end thereof. A cap 23 is formed at the other end of the catheter 22 and has an outgoing path 25 to regulate the direction of the fluid emitted from the other end. The catheter 22 is inserted into the channel 16 and the direction of the fluid is set for the direction of an observation window 13 to allow the washing of it.

Description

Detailed Description of the Invention

[0001]

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

[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 it into a body cavity or the like and also performing a medical treatment by using a treatment tool as needed. It has become widely used.
Also in the industrial field, endoscopes are widely used for inspecting the inside of jet engines, the inside of plants, and the like.

FIG. 13 shows the tip side of a conventional medical endoscope. An observation window 103 is formed in the distal end portion 102 of the insertion portion of the medical endoscope, an objective lens system 104 is attached to the observation window 103, and an image guide 105 arranged on the focal plane of the objective lens system 104. An optical image is formed on the tip surface of the.

An air / water feed channel 106 is formed adjacent to the observation window 103, and a cleaning nozzle 107 is attached to the tip of the air / water feed channel 106. The tip of this nozzle 107 is bent,
The objective lens system 104 attached to the observation window 103 is attached so as to face the outer surface of the objective lens system 104, and the outer surface of the objective lens system 104 (observation window 103) that has been contaminated with body fluid or the like due to washing water or the like ejected from the nozzle 107. I am able to wash it.

[0005]

However, since the nozzle 107 is bent as in the above-mentioned conventional example, when an endoscope is used, dirt and the like are likely to be collected in the bent portion of the nozzle 107, and disinfection after use. It is difficult to completely remove and sterilize even with disinfection treatment using a liquid or the like, and if this disinfection treatment is not perfect, it becomes a breeding source of various bacteria, and there is a problem that it will be infected in the next use.

In Japanese Utility Model Publication No. 64-6804, a cap having an air / water supply nozzle at its tip is detachably attached. In this publication, since the structure is made detachable on the side peripheral surface of the distal end portion, the outer diameter of the distal end portion becomes large, and there is a problem that the patient suffers great pain during insertion.

The present invention has been made in consideration of the above-mentioned points. The outer surface of the observation window can be cleaned, and the endoscope can be easily disinfected, and the outer diameter of the endoscope tip portion can be reduced. An object of the present invention is to provide a cleaning catheter device that can be used.

[0008]

A catheter that can be inserted into a channel of an endoscope and guides fluid from one end side to the other end, and a catheter formed at the other end of the catheter, By providing a guide member that regulates the direction of the fluid emitted from the other end, by inserting a catheter into the channel and setting the direction of the fluid by the guide member toward the outer surface of the observation window. The observation window can be washed, and the endoscope device can be easily and surely disinfected by removing the catheter device from the endoscope after use.

[0009]

Embodiments of the present invention will be specifically described below with reference to the drawings. 1 and 2 relate to a first embodiment of the present invention. FIG. 1 is a sectional view showing a distal end side of an endoscope in a state where the first embodiment is mounted, and FIG. The whole endoscope in the mounted state is shown.

As shown in FIG. 2, an endoscope 1 for observing, for example, the inside of the chest cavity provided with the first embodiment has a built-in observing means and is slender and flexible so that it can be inserted into a body cavity or the like. The insertion section 2 that it has, a wide-width operation section 3 that is continuously provided at the rear end of this insertion section 2, and an eyepiece section 4 that is formed at the rear end of this operation section 3.
And a light guide cable 5 extending from the side of the operation section 3, and the connector 6 attached to the end of the light guide cable 5 can be detachably connected to a light source device (not shown).

The insertion portion 2 has a hard tip portion 7 from the tip side.
And a flexible flexible tube portion 9, and the bending portion 8 can be bent by operating a bending knob 11 provided on the operation portion 3. By connecting the connector 6 of the light guide cable 5 to the light source device, white light of a lamp (not shown) in the light source device is applied to the end surface of the light guide, and the illumination light transmitted by the light guide is transmitted to the tip portion 7 of the light guide device. The light is emitted to the front from the illumination window 12 to which the side end surface is attached, and illuminates a subject (not shown).

The illuminated object is observed by the observation window 13 at the tip 7.
An optical image is formed on one end surface of an image guide 15 fixed to the focal plane of the objective lens system 14 shown in FIG. An optical image is transmitted to the other end surface on the eyepiece 4 side by the image guide 15. 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 channel 1 is provided so that a treatment tool or the like can be inserted into the endoscope 1 to perform a medical treatment.
6 is provided, and the channel 16 extends from the insertion opening 17 of the operation portion 3 shown in FIG. 2 through the inside of the insertion portion 2 to the tip end opening portion (see FIG. 1) of the tip end portion 7. The channel 16 is formed of a flexible tube 19 in the insertion portion 2,
The tip of the tube 19 is fixed to a base fixed to the through hole of the tip 7.

A cleaning means for cleaning the outer surface of the observation window 13, that is, the outer surface of the objective lens system 14 by inserting the (cleaning) catheter device 21 of the first embodiment into the channel 16 of the endoscope 1. It can be used as.

This catheter device 21 is shown in FIGS.
As shown in FIG. 3, the hollow catheter 22 and a cap 23 formed integrally with one end (tip) of the catheter 22 are provided, and the other open end of the catheter 22 is a light source device not shown. It can be detachably connected to the air / water supply mouthpiece and is built into the light source device (not shown)
A fluid such as liquid or gas supplied from the air / water supply means can be guided to the distal end side of the catheter 22.

The catheter 22 is formed of a flexible tube and has an outer diameter that allows it to be inserted through the channel 16. Further, the cap 23 has a shape close to an ellipsoidal sphere in this embodiment, and the catheter 23 is attached to the cap 23.
2 and a hollow portion 24 communicating with the tip opening of
An emission path 25 that communicates with the hollow flow path of the catheter 22 at an acute angle (that is, communicates in a V shape) is formed from the top of the, and the emission direction of the fluid guided to the distal end side of the catheter 22 is defined by this emission path. A restriction means or a guide means for restricting or guiding in the extension line direction of 25 is formed.

Then, as shown in FIG.
The liquid or gas indicated by the arrow, which has been supplied with air or water from the hand side via the above, can be sprayed through the hollow portion 24 and the emission passage 25 toward the observation window 13 facing the emission passage 25. ing.

According to the first embodiment, the catheter 22 is passed through the channel 16 so that the cap 23 projects from the distal end opening 18 and the exit path 25 is directed toward the observation window 13 as shown in the drawing. By performing an operation to operate the air / water supply means (for example, turning on the foot switch), the observation window facing the emission path 25 as shown by the arrow of the fluid that has been air-supplied or water-supplied as shown in FIG. It can be sprayed toward 13, and it is possible to remove deposits and the like attached to the outer surface of the observation window 13. In other words, it has a cleaning function similar to that of ejecting a liquid or gas through a normal nozzle.

In this way, when the endoscope 1 is disinfected after being used for observing an affected area or the like, the catheter device 2 is used.
By taking 1 out of the channel 16 of the endoscope 1, since the endoscope 1 does not have a bent nozzle portion, even if dirt enters the channel 16, it can be surely disinfected. Then, in the next use, the used catheter device 21 may be discarded and a new catheter device 21 may be used in place of the used one.

Therefore, the first embodiment has a cleaning function similar to that of ejecting a liquid or gas through an ordinary nozzle, and the disinfection process of the endoscope can be performed easily and surely. Further, according to this embodiment, since it is not necessary to provide the nozzle in the conventional example in the endoscope, the diameter of the distal end portion of the endoscope in particular can be reduced, and the pain to the patient at the time of insertion can be reduced.

As shown in FIG. 2, a mark 27 is provided on the proximal side of the catheter 22 so that the cap 23 can be set at a position most suitable for cleaning the observation window 13, and the direction of the exit path 25 is observed. A mark (not shown) for facilitating setting in the direction of the window 13 may be provided.

FIG. 3 shows a second embodiment of the present invention. The catheter device 31 of the second embodiment includes a catheter 32 formed of a flexible tube and a catheter 3
2 and a cap 33 fixed to the tip of the nozzle 2. The cap 33 has a plurality of ejection ports 3 as shown in FIG.
4, ... 34 are provided.

The distal end portion of the catheter 32 is fitted into the tubular portion 35 of the cap 33 and firmly fixed with an adhesive or the like, and the tubular portion 35 portion immediately before the distal end portion is covered with the tubular portion 35 from the inside to the outside. 34 are provided so as to face obliquely forward and outward. The umbrella portion 36 of the cap 33 faces the respective jet outlets 34 provided so as to face diagonally forward and outward, and forms an acute angle (9
The fluid that has been extended to an angle smaller than 0 ° and passed through the ejection port 34 is directed to the umbrella portion 36 (opposing the ejection port 34).
The facing surface allows guiding in the direction around the distal end of the catheter 32.

When this embodiment is inserted and used in the channel 16 of the endoscope, the proximal side of the catheter 32 is inserted from the distal end opening of the channel 16 and the proximal side is inserted from the insertion port to the outside. It is projected, and the projected end is connected to the mouthpiece of an air / water feeding means (not shown). Other configurations are similar to those of the first embodiment. The distal end portion 7 of the endoscope shown in FIG. 4 has the same configuration as that shown in FIG. 1 except that the observation window 13 is covered with a cover glass 37.

In this embodiment, the catheter device 31
By projecting the tip side of the nozzle from the tip opening of the channel 16 of the endoscope as shown in FIG. 4, the ejection direction of the fluid passing through each ejection port 34 is changed by the umbrella portion 36, and the fluid is applied to the observation window 13. Cover glass 37 that covers the observation window 13
It can be washed by washing away the adhered substances on the outer surface of the. In this embodiment, the illumination window will also be washable. The effect of this embodiment is almost the same as that of the first embodiment. 34 may be provided only in a part in the circumferential direction.

FIG. 5 shows a third embodiment of the present invention. The catheter device 41 of the third embodiment includes a catheter 42 formed of a flexible tube and a catheter 42
2 and a cap 43 fixed to the tip of the nozzle 2. The cap 43 has a plurality of ejection ports 4 as shown in FIG.
4, ... 44 are provided.

The distal end portion of the catheter 42 is fitted into the tubular portion 45 of the cap 43 and fixed by an adhesive or the like. The inner surface on the top side of the tubular portion 45 is expanded in diameter, and a diameter-increasing step portion is provided on the outer peripheral surface of the distal end portion of the catheter 42 to prevent the cap 43 from falling off from the distal end portion of the catheter 42.

A hollow disk-shaped cap body 46 is integrally formed on the top of the cylindrical portion 45, and a plurality of ejection ports 4 communicating from the inside to the outside are formed on the side peripheral surface of the cap body 46.
44 are provided so as to face obliquely outward. Then, the fluid that has passed through each ejection port 44 can be guided in the direction around the distal end portion of the catheter 42 facing the ejection port 44.

By projecting the distal end side of the catheter device 41 from the distal end opening of the channel 16 of the endoscope as shown in FIG. 6, the fluid passing through each jet port 44 is opposed to the jet port 44. The observation window 13 can be applied to the observation window 13, and the adhered substances on the outer surface of the cover glass 37 covering the observation window 13 can be washed away. Also in this embodiment, the illumination window can be washed.

The effect of this embodiment is similar to that of the second embodiment. 44 may be provided only in a part in the circumferential direction. FIG. 7 shows a fourth embodiment of the present invention. The catheter device 51 of the fourth embodiment
Is a catheter 5 made of a flexible tube
2 and a cap 53 fixed to the tip of the catheter 52.
Is provided.

The cap 53 has a tubular shape with a closed distal end, and the distal end portion of the catheter 42 is fitted into the proximal end of the cap 53.
It is fixed with adhesive. A jet port 54 communicating from the inner side to the outer side is provided on the side surface on the top side of the cap 53 so as to face the obliquely outward direction. Then, the fluid that has passed through the ejection port 54 can be guided in an obliquely rearward direction facing the ejection port 54.

A screw groove (not shown) is provided on the outer peripheral surface of the base end of the cap 53 so that the cap 53 can be fixed to the distal end surface of the endoscope. In this embodiment, the direction of the ejection port 54 of the cap 53 is set to the observation window 1
3, the cap fixture 55 is screwed into the thread groove of the cap 53 to fix the direction (rotational direction) of the cap 53, so that, for example, as shown in FIG.
The direction of the fluid ejected from No. 4 can be fixed in the direction of the observation window 13 and the distance between the ejection port 54 and the observation window 13 can be kept constant, so that the observation window 13 is most suitable for cleaning. Can be maintained. Other functions and effects are similar to those of the first embodiment.

The catheter device is not limited to one having a single conduit, but may have a branch of an air supply conduit, a liquid supply conduit, or the like. Below, an example of the configuration of the air supply conduit, liquid supply conduit, and suction conduit and examples of air supply, liquid supply, and suction devices connected to this are shown.

FIG. 8 is an explanatory view showing the structure of a cleaning catheter device according to the fifth embodiment of the present invention.

The cleaning catheter device of the fifth embodiment is constructed by connecting a cleaning liquid supply device 62 having an air supply means, a liquid supply means, and a suction means to a tube 61 for guiding a cleaning fluid.

A tip tip 64 having a plurality of ejection ports 63 is provided at the tip of the tube 61, and a cleaning liquid or gas supplied from a cleaning liquid supply device 62 is passed through the tube 61 in a fixed direction. It can be emitted or sucked in. The cleaning liquid supply device 62 is provided with an air supply cylinder 65 of an air supply means, a liquid supply tank 66 of a liquid supply means, and a suction tank 67 of a suction means for cleaning by a switching valve, a pump or the like (not shown) provided therein. The liquid or gas is supplied and suctioned.

When the endoscope is used, the tube 61 is inserted into the channel of the endoscope and the tip 64 projects from the tip of the insertion portion of the endoscope in the same manner as in the fourth embodiment. Fix with. Then, the cleaning liquid is delivered by the cleaning liquid supply device 62, and the tip tip 64 is passed through the tube 61.
Lead to. Then, the cleaning liquid is ejected in a certain direction from the plurality of ejection ports 63 of the distal end tip 64, and the distal end portion of the endoscope is cleaned. Next, gas is delivered from the cleaning liquid supply device 62,
The water droplets ejected from the ejection port 63 through the tube 61 and remaining at the tip of the endoscope are blown off. Further, when there is a residual water drop, the cleaning liquid supply device 62 sucks the water drop from the ejection port 63 of the tip 64 to remove the water drop.

In this way, the tube connected to the cleaning liquid supply device is detachably inserted into the channel of the endoscope, so that the distal end portion of the endoscope can be cleaned as in the first embodiment. In addition to having, it is possible to easily separate the endoscope and the tube and separately clean and disinfect,
Each part can be kept clean. Further, in this embodiment, 1
Air supply, liquid supply, and suction can be performed with a simple configuration using only one tube.

FIG. 9 is an explanatory view showing the structure of a cleaning catheter device according to the sixth embodiment of the present invention.

In the sixth embodiment, a first tube 71 having one lumen is provided inside, and a connecting portion 7 which also serves as a grip portion is provided continuously with the base end portion of the first tube 71.
Three second tubes 73, 74, and 75 are detachably connected via 2. Inside the connecting portion 72, a check valve is provided for each of the second tubes 73, 74, 75. These second tubes 73, 74, 75
An air supply device 76, a liquid supply device 77, and a suction device 78 are connected to each of them, and supply or suction of a fluid is performed. At the tip of the first tube 71, a tip 80 having a plurality of ejection ports 79 formed in two rows is provided.

In this embodiment, the first tube 71 is inserted into the channel of the endoscope, the distal end tip 80 is projected from the distal end of the insertion portion of the endoscope, and the air feeding device 76 and the liquid feeding device 77.
More gas or liquid is delivered. The gas or liquid for cleaning sent out is guided to the tip tip 80 of the tube, and is emitted from the plurality of ejection ports 79 of the tip tip 80,
The tip of the endoscope is washed. In addition, suction is performed by the suction device 78 via the tip 80 and the first tube 71. At this time, the check valve provided in the connecting portion 72 prevents the sucked liquid from flowing back to the second tubes 73 and 74 connected to the air feeding device 76 and the liquid feeding device 77. There is.

As in the fifth embodiment, the function of cleaning the distal end portion of the endoscope is also obtained by the structure in which the liquid is fed, the air is fed, and the suction is made through the three tubes branched from the middle. In addition to having the endoscope, the endoscope and the tube can be easily separated and separately cleaned and disinfected, and each part can be kept clean. Further, since the tubes are branched in the middle to form dedicated pipe lines, backflow and clogging can be prevented, and the pipe lines can be kept clean.

FIG. 10 is an explanatory view showing the construction of a cleaning catheter device according to the seventh embodiment of the present invention.

The seventh embodiment is a modification of the sixth embodiment, and has a connecting portion 8 connected to the base end portion of the first tube 71.
Two second tubes 82, 83 are detachably connected via 1, and a liquid feeding / suction device 84 having a liquid feeding function and a suction function is attached to these second tubes 82, 83.
And the air supply device 76 are connected to each other. Others are similar to those of the sixth embodiment.

As described above, also in the case where the liquid feeding and the suctioning are performed on one side and the air feeding is performed on the other side through the two tubes branched from the middle, the same action and effect as those of the sixth embodiment are obtained. Have.

FIG. 11 is an explanatory view showing the construction of the cleaning catheter device according to the eighth embodiment of the present invention.

The catheter device for cleaning of the eighth embodiment has a first lumen 92, 93 having a plurality of lumens (here, two).
Tube 91. Two lumens 92,9
3 merge at the tip side and communicate with the tip 94.
A connecting portion 95 that also serves as a grip portion is provided at the base end portion of the first tube 91, and two second connecting portions are provided via this connecting portion 95.
The tubes 96 and 97 are detachably connected. A liquid feeding / suction device 84 and an air feeding device 76 are connected to these second tubes 96 and 97, respectively, as in the seventh embodiment. Others are the same as those in the seventh embodiment, and the description thereof will be omitted.

As in the sixth embodiment, the tube having a plurality of lumens is provided in this way, and the liquid supply / suction and the air supply are performed by the pipe line separated to the tip of the tube. In addition to having a function of cleaning the tip part of the endoscope, the endoscope and the tube can be easily separated and separately cleaned and disinfected, and each part can be kept clean. In addition, since the tube is provided with separate conduits for liquid supply / suction and air supply, it is possible to reliably perform liquid supply and air supply, respectively.

FIG. 12 is an explanatory view showing the construction of the cleaning catheter device according to the ninth embodiment of the present invention.

The ninth embodiment is a modified example of the eighth embodiment, in which a separate air feeding device 76, liquid feeding device 77, and suction device 78 are connected to the first tube 91 having a plurality of lumens. Has become. Two second tubes are connected to the first tube 91 via a connecting portion 95, one tube 97 is connected to the air supply device 76, and the other tube 98 has two tubes in the middle. The liquid delivery device 77 and the suction device 78 are connected to each other. Others are the same as in the eighth embodiment.

In this way, a tube having a plurality of lumens is provided, and a separate air feeding device, liquid feeding device, and suction device are connected to this tube to perform liquid feeding / suction / air feeding. Also, similarly to the sixth and eighth embodiments, it has a function of cleaning the tip portion of the endoscope and can easily clean and disinfect each portion.

[0052]

As described above, according to the present invention, the catheter inserted into the channel of the endoscope and the direction of the fluid formed at the end of the catheter and regulated from the end are regulated. Since the guide member is provided, it has a function of spraying a cleaning liquid or the like on the outer surface of the observation window through the guide member, and at the same time, the catheter can be separated to ensure sterilization. The outer diameter of the tip can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing a distal end side of an endoscope to which a first embodiment of the present invention is attached.

FIG. 2 is an external view showing the entire endoscope to which the first embodiment is attached.

FIG. 3 is a sectional view showing a main part of a second embodiment of the present invention.

FIG. 4 is a cross-sectional view showing the distal end side of the endoscope to which the second embodiment is attached.

FIG. 5 is a sectional view showing a main part of a third embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a distal end side of an endoscope equipped with a third embodiment.

FIG. 7 is a cross-sectional view showing the distal end side of an endoscope equipped with a fourth embodiment of the present invention.

FIG. 8 is an explanatory diagram showing the configuration of a cleaning catheter device according to a fifth embodiment of the present invention.

FIG. 9 is an explanatory diagram showing the configuration of a cleaning catheter device according to a sixth embodiment of the present invention.

FIG. 10 is an explanatory diagram showing the configuration of a cleaning catheter device according to a seventh embodiment of the present invention.

FIG. 11 is an explanatory diagram showing the configuration of a cleaning catheter device according to an eighth embodiment of the present invention.

FIG. 12 is an explanatory view showing the configuration of a cleaning catheter device according to a ninth embodiment of the present invention.

FIG. 13 is a cross-sectional view showing the structure on the distal end side of a conventional endoscope.

[Explanation of Codes] 1 ... Endoscope 2 ... Insertion part 3 ... Operating part 7 ... Tip part 13 ... Observation window 16 ... Channel 21 ... Catheter device 22 ... Catheter 23 ... Cap 24 ... Hollow part 25 ... Ejection path

Front page continuation (72) Inventor Yasuhiko Omagari 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Akio Nakata 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Kogyo Co., Ltd. (72) Inventor Ryoji Masubuchi 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 catheter which can be inserted into a channel of an endoscope and which guides fluid from one end side to the other end, and a catheter formed at the other end of the catheter, from the other end. A cleaning catheter device comprising: a guide member that regulates the direction of the ejected fluid.