JPH0657305U - Endoscope with endoscope cover method - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an endoscope of an endoscope cover system which is excellent in operability of attachment and detachment without increasing the thickness of the cover. A cover-type endoscope in which a cover endoscope 2B is covered with a cover and used, wherein an insertion portion cover portion 11A of the cover is an expansion tube to which an expansion tube connected to a cover expander is attached. An endoscope insertion channel 3 having a tube mouth 33 and through which the cover endoscope is inserted.
4 is provided with a convex portion 38 near the base end side opening of the expansion tube mouth 33, and when the insertion portion 11B is inserted into the endoscope insertion channel 34, the insertion portion 11B is also inserted.
Thus, the proximal end side opening of the expansion tube mouth 33 is prevented from being blocked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an endoscope of an endoscope cover type in which an endoscope is attached to an endoscope cover by using an endoscope cover dilator.

[0002]

[Prior art]

 In recent years, endoscopes have been widely used in the medical field and the like. When an endoscope used in the medical field is inserted into a living body, the observation window provided at the distal end of the insertion part may not be sufficiently observed due to the adherence of body fluid or the like. For this reason, an air supply conduit or a water supply conduit is provided so that a fluid can be sprayed on the observation window to remove the body fluid and the like adhering to the observation window by the operation on the hand side. Further, there is also a device provided with a suction pipe line for sucking and discharging unnecessary body fluid and the like.

[0003] There are also those in which a forceps channel (treatment instrument channel) is provided so that a tissue can be collected by a biopsy forceps, a medical treatment can be performed by a treatment instrument, and the like.

When used for a patient or the like, an endoscope provided with a conduit such as the above-mentioned air supply conduit or a forceps channel is subjected to cleaning or sterilization treatment in order to reliably prevent infections and the like. However, it takes time to completely perform cleaning or sterilization, so there are problems that the efficiency of use of the endoscope is reduced or that the work such as sterilization is troublesome.

Therefore, by using the endoscope itself covered with an endoscope cover, the endoscope itself should be cleaned or sterilized so as not to become dirty even after use. There has been proposed an endoscope cover-type endoscope that does not require the.

For example, Japanese Patent Application Laid-Open No. 3-29634 discloses a cover in which the endoscope insertion portion is inserted into a cover (sheath) so as to cover the endoscope insertion portion. In order to facilitate the operation of inserting and removing the endoscope insertion part in the cover, air is blown from the cover expander into the cover into which the endoscope insertion part is inserted to inflate the inside of the cover.

Therefore, the cover is provided with a mouth body that guides air sent from the cover expander to a portion into which the endoscope insertion portion is inserted, and a tube is connected to the mouth body to expand the expander. The inside of the cover is inflated by the air supplied from.

[0008]

[Problems to be solved by the device]

 In the conventional example, when the endoscope insertion part is inserted, the proximal side of the mouth opening inside the cover is blocked by the inserted endoscope insertion part, and it is possible to send air into the cover. There is a problem in that it becomes difficult and the operability of attachment and detachment deteriorates.

In this case, it is possible to send air into the cover by increasing the pressure of the air sent from the dilator, but for that purpose, the cover can be made thicker to withstand the pressure. If the thickness of the cover is made thicker, the cost will inevitably increase, and the cover will not expand easily, resulting in a decrease in operability of attachment / detachment.

The present invention has been made in view of the above points, and an object of the present invention is to provide an endoscope of an endoscope cover system that is excellent in operability of attachment / detachment without increasing the thickness of the cover. Suru

[0011]

[Means and Actions for Solving the Problems]

 The present invention relates to an endoscope cover-type endoscope in which an endoscope is mounted on an endoscope cover using the endoscope cover dilator, wherein the endoscope cover is connected to the endoscope cover dilator. An extension tube mouth to which the extension tube to be attached is attached, and a convex portion is provided near the proximal end side opening of the extension tube mouth that communicates with the endoscope insertion channel into which the endoscope is inserted. As a result, even when the endoscope insertion part is inserted into the endoscope cover, it is possible to prevent the proximal end side opening of the extension tube mouth from being blocked by this endoscope insertion part, and the extension tube The air sent through the mouth can be guided to the endoscope insertion channel, and the operation of attaching and detaching the endoscope to the endoscope cover becomes easy.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 relate to a first embodiment of the present invention. FIG. 1 is an overall view showing the configuration of an (endoscope) cover type endoscope apparatus including the first embodiment, and FIG. Endoscope) A sectional view showing the structure of the endoscope of the cover type, FIG. 3 is a sectional view showing the structure of the endoscope cover taken along the line AA ′ of FIG. 2, and FIG. FIG. 5 is a front view showing the end-side opening, FIG. 5 is a view showing a schematic configuration of the dilator, and FIG. 6 is a perspective view showing a state in which the dilation tube is held by a cover holder.

As shown in FIG. 1, an endoscope cover type endoscope apparatus (hereinafter abbreviated as a cover type endoscope apparatus) 1 is a channel-equipped endoscope cover (hereinafter, a cover) of the first embodiment. 2A and a cover endoscope 2B attached to the cover 2A. An endoscope with a channel-type endoscope cover system (hereinafter abbreviated as a cover-type endoscope) 2 and A light source device 3 that supplies illumination light to the cover endoscope 2B, a video processor 4 that performs signal processing for the image pickup means built in the cover endoscope 2B, and air / water supply through the tube of the cover 2A. A fluid control device 5 for performing such operations, an endoscope cover dilator with a channel (hereinafter abbreviated as a cover dilator) 6 used for mounting the cover endoscope 2B on the cover 2A, and the video. To processor 4 And a monitor 7 that displays a video signal that has undergone signal processing. The light source device 3, the video processor 4, the fluid control device 5, and the extender 6 are housed in a cart 8, and the monitor 7 is mounted on the upper surface of the cart 8. It is supposed to be placed.

FIG. 2 shows an enlarged view of the cover type endoscope 2 portion of FIG. When an endoscopic examination is performed, the clean cover endoscope 2B is covered by the clean cover 2A, and the cover 2A is discarded after the inspection, while the cover endoscope 2B is replaced with a new clean one. It is characterized by being covered by the cover 2A and repeatedly used.

When the endoscope insertion portion 11B of the cover endoscope 2B is attached to the insertion portion cover portion 11A that constitutes the cover 2A, and when the attached cover endoscope 2B is inserted into the insertion portion cover portion 11A. When removing from, the cover holder 10 shown in FIG. 1 is used. For example, when mounting, the base end side of the cover 2A is hooked on the cover holder 10 to hold the cover 2A side, and the endoscope insertion portion 11B of the cover endoscope 2B is inserted and mounted. Put in a state.

The cover endoscope 2B includes an elongated and flexible endoscope insertion portion (hereinafter abbreviated as an insertion portion) 11B and an endoscope formed on the proximal end side of the insertion portion 11B. A mirror operation part (hereinafter abbreviated as an operation part) 12B and a universal cord 13B extended from a side part of the operation part 12B, and a connector 14 provided at the end of the universal cord 13B is attached to the light source device 3. It can be detachably connected, and by connecting to the light source device 3, illumination light from a lamp inside the light source device 3 is supplied to the end of the light guide 15 (see FIG. 2).

A bending operation knob is provided on the operation portion 12B on the side opposite to the side surface from which the base end of the universal cord 13B is projected. By operating this bending operation knob, the bending operation knob is provided on the distal end side of the insertion portion 11B. The bending portion 20 can be bent. Further, the operation unit 12B is provided with an air supply / water supply switch, a suction switch, an image changeover switch, etc., and by operating each switch, air supply / water supply, suction, image freezing, etc. are performed. Is able to.

A cable 16 extends from the connector 14, and a signal connector 17 at the end of the cable 16 can be detachably connected to the video processor 4. On the other hand, the cover 2A is composed of an insertion section 11B of the cover endoscope 2B, an operation section 12B, an insertion section cover section 11A for covering the universal code 13B, an operation section cover section 12A, and a universal code cover section 13A. .

Further, in the cover 2A, for example, the insertion portion cover outer cover 17A of the insertion portion cover portion 11A, the operation portion cover portion 12A, and the universal cord cover portion 13A are formed of synthetic resin such as polyurethane, polyester, or silicon.

As shown in FIG. 2, the insertion portion cover portion 11A includes an insertion portion cover outer cover 17A that covers the insertion portion 11B, and an endoscope operation portion fixed airtightly provided at the base end of the insertion portion cover outer cover 17A. It is composed of a mouthpiece part 18 and a cover tip part 19A which is airtightly provided at the end of the insertion part cover outer skin 17A.

Illumination light supplied to one end surface of the light guide 15 from a lamp (not shown) in the light source device 3 is transmitted by the light guide 15 and is illuminated by an illumination window (not shown) at the tip portion 19B of the insertion portion 11B. The light is emitted from the other end face attached to the front end to the front side of the subject through the transparent plate of the cover illumination window 22A (see FIG. 1) facing the other end face.

A subject such as an illuminated affected part is a cover provided adjacent to the cover illumination window 22A. A transparent plate of the observation window 23A and an observation window 23B provided inside the cover observation window 23A so as to face the transparent plate. An optical image is formed on the focal plane of the objective optical system 24 through the objective optical system 24 attached to.

A CCD 25 is arranged on this focal plane, the formed optical image is photoelectrically converted, and a signal cable 26 inserted through the insertion portion 11 B and the universal cord 13 B and a signal cable 16 are passed to the video processor 4. After being input and signal-processed, a standard video signal is generated, and this video signal is input to the monitor 7 and the object image is displayed on the display screen.

As shown in FIG. 2, an air / water feeding tube and a suction tube are provided in the insertion portion cover portion 11A, and an air / water feeding conduit 27 and a suction conduit 28 are formed, respectively. There is. The tip of the air / water feeding conduit 27 communicates with the nozzle 29 of the cover tip portion 19A, and the tip opening of this nozzle 29 faces the outer surface of the cover observation window 23A.

In addition, the base end side of the air / water supply tube extends above the endoscope operating portion fixing mouth portion 18 and is covered with the universal cord 13B together with the universal cord cover portion 13A. It extends to the fluid control device 5 side, and its proximal end is connected to the fluid control device 5. Therefore, if body fluid or the like adheres to the cover observation window 23A, it can be removed by sending air or water through the air / water supply conduit 27.

A forceps insertion opening 31 and an expansion tube opening 33 for connecting an expansion tube 32 connected to the cover expansion device 6 are provided on the side surface of the endoscope operation section fixing opening body section 18. The forceps insertion port 31 merges with the suction conduit 28, and opens at the forceps outlet 30 that also functions as a suction port at the cover tip portion 19A. In this embodiment, as shown in FIG. 3, the expansion tube mouth 33 is provided at a position of an angle θ which is 90 ° or more away from the forceps insertion opening 31 in the radial direction, and when one operation is performed. They are placed apart so that the other does not get in the way.

Further, an opening portion 35 of the endoscope insertion channel 34 for inserting (mounting) the insertion portion 11B of the cover endoscope 2B is provided on the upper surface of the mouthpiece portion 18 for fixing the endoscope operation portion. Has been. The endoscope insertion channel 34 refers to the air / water supply conduit 27 within the internal space surrounded by the cover distal end portion 19A, the insertion portion cover outer skin 17A, and the endoscope operation portion fixing mouth portion 18. The suction conduit 28 is excluded, and is the portion into which the insertion portion 11B of the cover endoscope 2B is inserted.

In this embodiment, as shown in FIG. 3, the endoscope insertion channel 34 has a semi-circular cross section. Therefore, the insertion portion 11B also has a semicircular cross section according to the shape of the endoscope insertion channel 34. The opening portion 35 of the endoscope insertion channel 34 provided in the endoscope operation portion fixing mouth portion 18 communicates with the extension tube mouth portion 33.

A projection 38 that projects toward the endoscope insertion channel 34 is provided at the proximal end opening of the expansion tube mouth 33 that communicates with the endoscope insertion channel 34. The convex portion 38 is formed in a ring shape as shown in FIG. 4. The ring-shaped convex portion 38 is provided with a notch, and when the insertion portion 11B is inserted into the endoscope insertion channel 34, It is possible to send the air sent from the expansion tube mouth 33 side into the endoscope insertion channel 34 through the notch without closing the proximal end side opening of the expansion tube mouth 33 by the insertion portion 11B. The feature is that.

The forceps insertion port 31 is closed by a forceps plug 40. A slit is formed in an elastic member of the forceps plug 40, and the slit is normally elastically closed so that the forceps can be inserted by expanding the slit.

When the insertion portion 11B of the cover endoscope 2B is attached to the insertion portion cover portion 11A and when the insertion portion 11B is removed from the insertion portion cover portion 11A, as shown in FIG. Is used.

The cover expander 6 is basically composed of an air supply pump 41 and an air supply conduit 42, and a mouthpiece 43 to which the base end of the expansion tube 32 is connected is provided at the opening end of the air supply conduit 42. It is provided.

The cover expander 6 normally continues to supply air. For this reason, when the function of the cover expander 6 is not used, the end of the expansion tube 32 is not connected to the expansion tube mouth 33 as shown in FIG. 1, but is opened to the outside air and leaks air. There is.

Then, when inserting and removing the cover endoscope 2B into the insert portion cover portion 11A, as shown in FIG. 5, the operation of pushing the end of the extension tube 32 into the extension tube mouth 33 is performed. By doing so, it is airtightly inserted (fitted) and connected, and the air by the air supply pump 41 is sent to the endoscope insertion channel 35 through the expansion tube mouth 33, and the endoscope insertion channel 35 is inflated. It is possible to easily insert and remove the endoscope insertion portion 11B.

When inserting the cover endoscope 2B into the insert portion cover portion 11A, as shown in FIG. 6, the flange portion at the upper end of the endoscope operation portion fixing mouth portion 18 is the cover holder 1. The insertion portion 11B of the cover endoscope 2B is inserted from the opening 35 on the upper surface of the endoscope operation portion fixing body portion 18 while being held by the semicircular holding portion 39 provided at 0. It can be easily attached by performing an operation.

Next, the operation of the first embodiment will be described. When the cover endoscope 2B is inserted (attached) into the insertion portion cover portion 11A of the cover 2, the semicircular holding portion 39 provided in the cover holding tool 10 is used as shown in FIG. The flange portion at the upper end of the mirror operation portion fixing mouth portion 18 is held.

When the end of the expansion tube 32 is connected to the expansion tube mouth 33, air is sent from the cover expander 6 to the endoscope insertion channel 34, and this air leaks to the outside from the opening 35. .

When the insertion portion 11B of the cover endoscope 2B is inserted into the opening portion 35, the insertion portion 11B of the endoscope insertion channel 34 does not come into close contact with the channel wall surface due to the protrusion 38 and the cutout ( Therefore, the air supplied to the expansion tube mouth 33 can be guided into the endoscope insertion channel 34 through the notch without being blocked, and the insertion portion cover outer cover 17A forming the endoscope insertion channel 34 is formed. Can be inflated, and the insertion portion 11B can be smoothly inserted.

After the insertion operation is completed, when the end of the expansion tube 32 is removed from the expansion tube mouth 33, air leaks from the expansion tube mouth 33, and the insertion portion cover outer cover 17A contracts due to its elasticity (insertion portion cover). The outer diameter of the outer cover 17A becomes smaller), and the outer surface of the endoscope insertion portion 11B, that is, the outer cover of the insertion portion 11B, is brought into close contact with the inner surface thereof.

After removing the end of the expansion tube 32, by attaching an expansion tube mouth cover to the expansion tube mouth 33, the expansion tube mouth 33 is covered to perform an endoscopic examination. Even if the hands or gloves (of the operator's hand) contaminated by being used on a patient are accidentally touched by the mouth of the expansion tube 33, it is possible to prevent infections. good.

According to this embodiment, since the convex portion 38 is provided at the proximal end side opening of the expansion tube mouth 33, the insertion operation of the cover endoscope 2B becomes easy.

The endoscope used together with the cover 2A is not limited to the cover endoscope 2B, and an endoscope used without being covered with the cover 2A, that is, an endoscope used naked is used. You can also

In the first embodiment, the expansion tube mouth 33 may be provided 180 ° in the radial direction with respect to the forceps insertion mouth 31, that is, on the opposite side. With this configuration, since the extension tube mouth 33 protruding from the endoscope operating portion fixing mouth 18 and the forceps insertion opening 31 are on the opposite side, the mold can be easily removed from the mold, and thus the molding can be facilitated.

FIG. 7 shows a main part of a cover type endoscope 2 according to a second embodiment of the present invention. In this embodiment, as in the first embodiment, a convex portion 38 is provided at the base end side opening of the expansion tube mouth 33, and the cross sectional area of the endoscope insertion channel 34 communicating with this opening is the upper side. The convex wall portion 51 is provided such that the (opening 35 side into which the insertion portion 11B is inserted) side is smaller than the lower side (tip portion) side.

The other configurations are the same as those in the first embodiment. According to this embodiment, in addition to having the same operation as the first embodiment, the cross-sectional area of the endoscope insertion channel 34 is smaller on the upper side than on the lower side, so that the insertion portion cover portion 11A has the insertion portion 11B. When the insertion portion 11B is inserted through the opening portion 35 for mounting, the air leaking to the outside through the upper side can be reduced or eliminated. In other words, the amount of air leaking to the upper side can be reduced or eliminated.

For this reason, the air that has been sent can be efficiently sent to the distal end side of the endoscope insertion channel 34, so that the operation such as insertion becomes easier.

FIG. 8 shows a main part of a cover type endoscope 2 according to a first modification of the second embodiment of the present invention. In this modified example, as in the first embodiment, a convex portion 38 is provided at the base end side opening of the expansion tube mouth 33. Further, in this modified example, the extension tube mouth 33 and the forceps insertion mouth 31 are provided in the joint portion 52 that connects the endoscope operation portion fixing mouth portion 18 and the insertion portion cover outer skin 17A. I have to.

The cross-sectional area of the endoscope insertion channel 34 is smaller than the distal end side at the opening of the mouthpiece portion 18 for fixing the endoscope operation portion. Therefore, the operation is similar to that of the second embodiment.

In this modification, the endoscope operating section fixing mouth body 18, the extension tube mouth 33, and the forceps insertion mouth 31 can be formed as separate members. Therefore, for example, the mouthpiece portion 18 for fixing the endoscope operation portion can be formed of the elastic member, and the wearability can be improved.

FIG. 9 shows a main part of a cover type endoscope 2 according to a second modification of the second embodiment of the present invention. In this modified example, as in the first embodiment, a convex portion 38 is provided at the proximal end side opening portion of the extension tube mouth 33 provided in the endoscope operation portion fixing mouth portion 18. Further, the forceps insertion opening body 31 is provided in the connecting portion 52 that connects the endoscope operation portion fixing mouth portion 18 and the insertion portion cover outer skin 17A.

It is sufficient to provide the protruding tube mouth 33 and the forceps insertion mouth 31 projecting to the endoscope operation portion fixing mouth portion 18 and the connecting portion 52, respectively. Molding becomes easier than the case where both are provided.

A recess may be formed in the base end side opening of the expansion tube mouth 33. By forming this concave portion, when the cover endoscope 2B is inserted, it is possible to form a gap that can prevent the cover endoscope 2B from closing the opening.

By doing so, it is possible to prevent the opening of the cover endoscope 2B from being closely adhered and blocked by this opening, so that it is easy to send air into the endoscope insertion channel 34 through the expansion tube mouth 33. It is easy to install and remove.

Further, since it is not necessary to provide the convex portion 38 as shown in FIG. 2 or change the shape of the base end side of the opening portion as shown in FIG. 7, the opening portion of the endoscope insertion channel 34 is not required. Molding of 35 becomes easy.

Note that different embodiments can be configured by combining the above-mentioned embodiments partially or in part. For example, in each of the above-described embodiments, the forceps insertion port and the expansion tube mouth may be provided at an angle of 90 ° or more.

[0056]

[Effect of device]

 As described above, according to the present invention, since the convex portion is provided in the vicinity of the proximal end side opening that communicates with the endoscope insertion channel in the mouth of the expansion tube, it is possible to prevent the internal portion when the insertion portion is inserted. The insertion portion of the inner wall of the endoscope insertion channel can secure a passage for air to be sent into the endoscope insertion channel from the mouth side of the expansion tube, which facilitates the insertion operation of the insertion portion.

[Brief description of drawings]

FIG. 1 is an overall view showing a configuration of a cover-type endoscope apparatus including a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the configuration of the main part of the cover-type endoscope of the first embodiment.

3 is a cross-sectional view showing a cross section of the insertion portion cover taken along the line AA ′ in FIG.

FIG. 4 is a view showing a convex portion provided on the mouth of the expansion tube from the endoscope insertion channel side.

FIG. 5 is an explanatory diagram showing a schematic configuration of a dilator.

FIG. 6 is a perspective view showing a state in which the insertion section cover is held by the holding section of the cover holder.

FIG. 7 is a sectional view showing the configuration of the main part of a cover type endoscope according to a second embodiment of the present invention.

FIG. 8 is a cross-sectional view showing the configuration of a main part of a cover type endoscope according to a first modified example of the second embodiment of the present invention.

FIG. 9 is a cross-sectional view showing the configuration of the main part of a cover type endoscope according to a second modification of the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cover-type endoscope apparatus 2 ... Cover-type endoscope 2A ... Cover 2B ... Cover endoscope 3 ... Light source device 4 ... Video processor 5 ... Fluid control device 6 ... Cover extender 7 ... Monitor 8 ... Cart 10 ... Cover holder 11A ... Insert part cover part 11B ... Insert part 12A ... Operation part cover part 12B ... Operation part 13A ... Universal cord cover part 13B ... Universal cord 14 ... Connector 17A ... Insert part cover outer skin 18 ... Inside Mouth portion for fixing endoscope operation section 19A ... Tip of cover 19B ... Tip 20 ... Curved portion 23A ... Cover observation window 23B ... Observation window 24 ... Objective optical system 25 ... CCD 27 ... Air / water supply conduit 28 ... Suction Pipe line 31 ... Forceps insertion port 32 ... Expansion tube 33 ... Expansion tube mouth 34 ... Endoscope insertion channel 35 ... Opening 38 ... Convex part 41 ... Air supply port Flop

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshio Tashiro 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Akira Suzuki 2-43 Hatagaya, Shibuya-ku, Tokyo Within Olympus Optical Co., Ltd. (72) Minoru Yamazaki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Osamu Hatta 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An endoscope of an endoscope cover type in which an endoscope is mounted on an endoscope cover using the endoscope cover extender, wherein the endoscope cover is the endoscope cover extender. An extension tube mouth to which an extension tube connected to is attached, and a convex portion is provided in the vicinity of a proximal end opening of the extension tube mouth communicating with an endoscope insertion channel into which the endoscope is inserted. An endoscope with an endoscope cover method characterized by the above.