JPH0666607U - Endoscope with channel cover system - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the endoscope cover has a channel,
(EN) Provided is an endoscope of an endoscope cover system with a channel, which can reduce the diameter of the cover. [Structure] An endoscope cover with a channel 10 to be used in combination with a cover endoscope 7 includes a cover tip constituting section 2.
1 is provided with a tube of a forceps channel 27 extending to the proximal side, and a cover glass 23 as an optical window member is provided on the tip end surface side of the cover tip forming portion. The connection of the channel tube is performed by connecting the cover tube 23 to the cover tip forming portion 21 at a position closer to the cover glass 23. Cover tip component 21
The tube can be connected to the side closer to the side than the thickness of the cover glass 23. The thickness of the tube does not become a factor of increasing the outer diameter, and the cover glass 23 is closer to the forceps channel or the like without considering the thickness of the tube.
The cover can be arranged closer to each other, and the diameter of the cover can be easily reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an endoscope of an endoscope cover type, and more particularly to an endoscope of a channel type endoscope cover type.

[0002]

[Prior art]

 For endoscopy using a medical endoscope, it is necessary to use a clean endoscope that has been thoroughly washed and disinfected before the examination. Such an operation is performed for each case because one endoscope is used for a plurality of patients. Therefore, when the endoscope used for the examination is used for the examination of the next patient, the next examination cannot be started during the time necessary to sufficiently perform such cleaning / disinfection or sterilization, and A considerable amount of labor is required for the treatment.

In order to reduce these inconveniences caused by time-consuming and labor-intensive work, such a conventional repeated-use endoscope is used, and an insertion portion that has been washed and disinfected in advance and an inspection portion (that is, use) are used. A disposable endoscope cover type endoscope in which the insertion portion is replaced is proposed. According to this, compared with conventional endoscopes of repeated use type, that is, endoscopes without a cover, the time required for cleaning and disinfecting each time required conventionally as described above is reduced and the workability is improved. Can be expected. Such an endoscope with an endoscope cover system is composed of a combination of an endoscope cover and an endoscope for an endoscope cover to be inserted into the endoscope cover.

[0004]

[Problems to be solved by the device]

 In this type of cover-type endoscope, an endoscope with a channel-type cover that uses a channel-attached cover has a distal end surface made of transparent glass or plastic for observation. In addition to the lighting window member, forceps channels, nozzles, etc. are arranged. Behind the window member (on the side of the hand), the distal end of the endoscope including the observation and illumination optical system on the side of the cover endoscope that is inserted during mounting is positioned so as to face it. One side in the radial direction of the cover is a space into which the endoscope for a cover is inserted in this way, and the combined endoscope for a cover can be mounted and used by inserting it into the space. On the other hand, the conduit tube extends to the opposite side and reaches the cover tip side from the hand side to connect with the tip forming part.In that case, the tube tip is aligned with the cover tip surface like the window member. Connection, an opening hole (through hole that penetrates the cover tip component) corresponding to the cross-sectional area including the wall thickness of the tube is formed, which is a factor that increases the diameter of the endoscope cover with a channel. Become. Since a window member with an outer diameter larger than that of the built-in object is arranged on the tip surface of the cover, an opening hole having a size including the wall thickness of the tube is required. With the structure in which the tip is aligned with the cover tip surface, the area corresponding to the tube wall thickness is occupied by the tube connection in the limited cover tip surface, and this tends to cause an increase in the outer diameter. This will hinder the reduction of the diameter of the cover. In order to reduce the diameter of the cover, keep a predetermined distance between the position of the window member mounting hole and the tube connection opening (through hole) in the radial direction on the cover tip surface. Even if they are brought close to each other, it is necessary to separate the window member and the tube from each other by the thickness of the tube. Also has certain limits. The endoscope cover with a channel has the above-mentioned convenient endoscope with a channel, which covers the endoscope for the cover with this, and the cover is thrown away after each use. However, from the viewpoint of alleviating the pain of the patient during use, it is preferable that the diameter be as small as possible and that the outer diameter be thick.

Therefore, an object of the present invention is to provide an endoscope with a channel-equipped endoscope cover system, which can reduce the diameter of the cover even if the endoscope cover has a channel. .

[0006]

An endoscope with a channel-equipped endoscope cover system of the present invention includes a tube extending from a cover tip forming portion toward a proximal side, and a tip end side of the cover tip forming portion. In an endoscope with a channel-equipped endoscope cover, which includes an endoscope cover with a channel having an optical window member and an endoscope for an endoscope cover with a channel that is inserted into the endoscope cover with a channel, The tip of the tube is connected to the cover tip constituent portion at a position closer to the hand than the optical window member.

[0007]

[Action]

 In the present invention, the endoscope cover with a channel to be used in combination with the endoscope for a cover is provided with a tube extending toward the hand side at the cover tip forming portion, and the optical tip is provided at the tip face side of the cover tip forming portion. Although it has a window member, since the tube is connected to the cover tip component at a position closer to the optical window member than the optical window member, the tube is connected to the cover tip component at the hand side rather than the thickness of the optical window member. be able to. For this reason, the tube wall thickness does not become a factor for increasing the outer diameter as in the case where the tube tip is aligned with the cover tip surface and is connected, and it is necessary between the optical window member and the channel in the cover tip component. It is possible to bring them closer together while maintaining the distance.Even with a large optical window member, it is necessary to place the optical window member closer to the forceps channel etc. without considering the tube thickness. This reduces the number of restrictions, increases the degree of freedom in layout, and makes it easier to reduce the diameter of the cover and thus the endoscope with the channel-covered endoscope cover system.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall view of an example of an endoscope apparatus using an endoscope cover with a channel. Here, the entire configuration of a set including an endoscope, a light source, a fluid control device and the like when used as an electronic endoscope is shown.

In the figure, 1 is a cart in which peripheral devices are stored. The cart 1 contains, for example, a light source device 2, a video processor 3, a fluid control device 4, an endoscope cover dilator (hereinafter also referred to as dilator) 5 with a channel, a monitor 6 and the like. The light source device 2 is connected to a channel-attached endoscope cover endoscope (hereinafter also referred to as a cover endoscope) 7 via a connector portion 256. The cover endoscope 7 is connected with a curl cord 8 for inputting a signal output from the CCD 37 as an image pickup element shown in FIG. 2 provided in the vicinity of the distal end of the insertion portion to the video processor 3.

The endoscope with a channel-equipped endoscope cover system, which is generally denoted by reference numeral 9, comprises a combination of a cover endoscope 7 and a channel-equipped endoscope cover 10. The endoscope 7 for a cover is covered with an endoscope cover 10 (hereinafter, also abbreviated as a cover) with a channel for preventing contamination, which covers the endoscope 7 for a cover. The cover 10 includes an insertion portion cover portion 11, an operation portion cover 12, and a universal cord cover 13. These are all sterilized before use. Here, the insertion portion cover portion 11 is configured by a portion of the cover 10 that covers the insertion portion of the cover endoscope 7 and a component portion in the vicinity thereof. The operation portion cover 12 is a cover portion that covers the operation portion of the cover endoscope 7. The angle knob portion of the operation portion 40 of the cover endoscope 7 is also covered with the angle knob cover 17. The universal code cover 13 is a cover that covers the universal code 244 of the cover endoscope 7. Here, the universal cord is a connecting pipe for connecting the operation portion of the endoscope and the endoscope control device such as the light source device, the video processor, or the fluid device. In the case of an endoscope cover with a channel, the suction conduit 73, the water supply conduit 74, and the air supply conduit 75, which communicate with the forceps channel / suction conduit and the air / water supply channel on the cover 10 side, respectively, are also connected to the fluid control device 4. It is better to cover the whole procedure up to the universal cord cover 13.

The expansion device 5 is provided with an expansion tube 14. The expansion tube 14 expands the cover by, for example, blowing air to make it easier to attach / detach the cover endoscope 10 when it is attached or when it is pulled out after use, as shown in FIG. It is used by connecting with the extension tube mouth 33 of the cover 10.

In FIG. 1, reference numeral 15 denotes a cover holder that holds the insertion-portion cover portion 11 when the insertion-portion cover portion 11 is attached to and detached from the cover endoscope 7. The cover holding member 18 of the cover holder 15 is a portion that is connected to the insertion portion cover portion 11 when the cover holding member 18 is attached and detached, and is formed in a U shape. The surface of the cover holding member 18 is also covered with a cover holding member cover 20 for preventing contamination.

Further, 51 is a laser device, and the laser device 51 has a laser probe 52 and a foot switch 53. The laser probe 52 is inserted into the forceps channel from the forceps insertion opening 29 of the cover 10 during a case and when necessary, and is projected from the cover tip forming portion 21 of the insertion portion cover portion 11 inserted into the body cavity of the patient. Can be used.

FIG. 2 is a cross-sectional view of the cover-type endoscope 9, showing an example of a detailed structure of the insertion-portion cover portion 11 in a state where the insertion-portion cover portion 11 of the cover 10 is mounted on the cover endoscope 7. ing. 3 is a front view of the tip portion of the cover 10, and the AA cross section of FIG. 3 corresponds to FIG.

As shown in FIG. 2, the cover 10 has a cover tip forming portion 21 at the tip. A transparent observation window cover glass serving as an observation window member provided at a position corresponding to the forceps outlet 22 and the observation optical system of the cover endoscope 7 is provided on the tip surface of the cover tip forming portion 21. 23 (cover side). The observation optical system of the cover endoscope 7 includes an observation window cover glass 41 (on the endoscope side) arranged in the objective lens fitting portion 34 protruding from the tip fitting portion 35, and the objective lens 36. Further, as shown in FIG. 3, similarly, as a window member for illumination provided on the tip surface of the cover tip forming portion 21 at a position corresponding to the illumination optical system of the cover endoscope 7 to be inserted. A transparent light guide cover glass 124 (cover side) and an air / water supply nozzle 125 are provided. The observation window cover glass 23 on the cover 10 side is fitted from the front end side, and the periphery thereof is fixed by adhesion. A tube for the forceps channel 27 and a dual-purpose suction conduit is inserted into the forceps outlet 22 from the proximal side, and the periphery is fixed by being adhered to the inner surface of the forceps channel fitting portion 44.

Further, the cover distal end forming portion 21 faces the endoscope insertion channel 31 through which the inserting portion 45 of the cover endoscope 7 passes, and the endoscope is opened from the side surface on the proximal side of the cover distal end forming portion 21. It has a distal end insertion channel 47 and an endoscope objective lens insertion channel 50 connected to it. The insertion channel 50 into which the objective lens section fitting section 34 is inserted is formed by the objective lens section alignment section 26.

An insert portion cover skin 30 made of a soft material for separating the cover endoscope inserting portion 45 from the external environment is air-tightly connected to the cover tip forming portion 21. A mouth portion 32 for fixing the endoscope operation portion is provided on the proximal side of the outer cover 30 of the insertion portion cover. A forceps insertion port branching portion 28 having a forceps insertion port 29 is provided on such an endoscope operating portion fixing mouth portion 32 on the proximal side of the insertion portion cover outer cover 30, and the endoscope operating portion fixing portion 28 is fixed. The mouthpiece part 32 has an extension tube mouthpiece 33 and the like for connecting the extension tube 14 (FIG. 1) provided in the dilator 5.

The mouthpiece portion 23 for fixing the endoscope operation portion is also provided with an endoscope operation portion insertion channel 49 provided for the operation portion fitting portion 38 of the cover endoscope 7. At the end, a conduit such as the suction conduit 14 that communicates with the forceps channel 27 projects. Each of the suction conduit 14, the water supply conduit 74, and the air supply conduit 75 protruding from the end of the mouthpiece portion 32 for fixing the endoscope operation portion of the insertion portion cover portion 11 has the universal cord cover described above. It passes through the inside of 13 and is guided to the connector part 256 side of the cover endoscope 7 (FIG. 1).

In this embodiment, in such an endoscope cover with a channel, the tube for the forceps channel 27 is connected to the distal end forming portion 21 on the hand side of the cover glass 23. That is, the observation window cover glass 23 is fitted from the tip side of the objective lens alignment section 126, and is fixed by adhering the periphery. Although the 27 tube is inserted and fixed by adhering the periphery, the tube tip of the forceps channel 27 abuts on the side slightly closer than the thickness of the observation window cover glass 23 and stops. Therefore, according to this embodiment, the forceps outlet 22 and the observation window cover glass 23 can be easily brought close to each other without considering the thickness of the tube of the forceps channel 27, so that the diameter of the cover tip forming portion 21 can be reduced. It is possible.

FIG. 4 shows the principle of this diameter reduction. FIG. 4A shows a case where the forceps channel tube 27a is aligned and connected to the tip end surface, and FIG. 4B has the above-mentioned configuration, and therefore the bonding is performed from the cover glass 23 on the near side. Comparing the two, in FIG. 4B, the wall thickness of D3 can be made thinner than that of D1 in FIG. 4A, and the gap thickness between the cover glass 23 and the forceps outlet 22 in FIG. 4B is approximately the same as D2 of FIG. 4A. Can be thin. Therefore, it can be seen that the outer diameter is φB smaller than φA in FIG. 4A, and the diameter can be reduced.

In the above description, the relationship between the observation window cover glass 23 and the forceps channel 27 has been described, but the present invention is not limited to this, and even if the observation window cover glass 23 is the light guide cover glass 124 or the forceps channel. Even if 27 is a tube for air supply / water supply following the air / water supply nozzle 125, the same effect can be obtained. That is, in any case, the tube can be connected to the cover tip forming portion 21 closer to the hand than the thickness of the cover glass, and the tube wall thickness is the same as when connecting the tube tip to the cover tip end surface. The minute does not cause the outer diameter to become thick. Therefore, it is possible to bring them closer together while maintaining the necessary distance between them in the cover tip configuration part, and dispose the cover glass closer to the forceps channel etc. without considering the tube thickness. This reduces the number of restrictions and increases the degree of freedom in layout.

Next, with reference to FIG. 5 to FIG. 8, an example of the configuration of a cover type endoscope for squint configured to enable squint observation will be described. Oblique perspective observation is performed in a cover-type endoscope with a cover side including a distal end configuration portion whose front end surface is inclined from a vertical direction, a cover glass attached at the same angle, and an internal cover optical system for oblique view. In combination with the endoscope side, or the cover side consisting of the tip forming part whose tip surface is inclined from the vertical, and the perspective lens group having the cover glass and the prism, and the inside of the cover having the objective optical system for direct view. It is realized by combining with the endoscope side.

In the case of the example of FIG. 5, as shown in the drawing, the tip end surface of the cover tip forming portion 21 has an angle of, for example, 75 ° with respect to the center direction of the perspective cover 141. Here, in the case where the lower side is the most distal end as shown in the figure, the forceps outlet 22 is arranged at the uppermost side, and the observation window cover glass 23 is arranged at the lowermost side. Has been done. The observation window cover glass 23 is parallel to the distal end surface of the forceps outlet 22 and is obliquely bonded and fixed to the cover endoscope objective section insertion channel 148. The cover perspective endoscope 140 has an objective lens 36, which is for perspective use only. The cover perspective endoscope 140 is inserted into the cover endoscope objective section insertion channel 148 so that the objective lens 36 is exactly fixed to the observation window cover glass 23 (FIG. 6). Since the distal end surface of the cover perspective endoscope 140 and the observation window cover glass 23 have an angle with respect to the insertion direction, the cover perspective endoscope 140 may be inserted in a circular cross section.

With the above-described structure, the cover-type perspective endoscope 140 can be used as the cover-type endoscope 139 by attaching the perspective cover 141 to the cover-type perspective endoscope 140. According to this example, strabismus observation is possible, and the treatment ability is improved. If there is a cover-only endoscope for squint, a cover can be manufactured at the same cost as for direct view (the number of parts is the same, only the tip surface is inclined). In addition, the observation window cover glass 23 and the forceps channel fitting portion 44 do not overlap with each other so that the forceps channel 27 does not protrude from the tip end surface at the uppermost portion of the forceps outlet 22. Therefore, this is also consistent with the reduction in diameter described above.

In the example of FIG. 7, the angle of the tip surface of the cover tip forming portion 21 is the same as that of the above-described configuration. As shown in the figure, in this case, a circular perspective lens frame channel 149 is provided on the lower side, but on the hand side, it is perpendicular to the central axis of the perspective cover 141. This depth is set so as to be closer to the tip side than the tip surface of the forceps channel fitting portion 44. Therefore, this is also consistent with the reduction in diameter.

The squint lens frame 143 that fits in the squint lens frame channel 149 has a lens hole formed on the front end side perpendicular to the tip end surface and on the hand side perpendicular to the hand end side surface. The observation window cover glass 23 is dropped from the tip side of the oblique-viewing lens frame 143, and the oblique-viewing lens 142 is dropped from the near side, and the entire circumference is adhesively fixed. The squint lens frame 143, in which the observation window cover glass 23 and the squint lens 142 are incorporated, is inserted into the squint lens frame channel 149, and the end face of the squint lens frame 143 is the tip side face of the objective lens alignment section 126. And the perspective lens frame 143 is fixed. Here, when the side surface of the perspective lens 142 at the proximal side has a diameter larger than that of the cover endoscope objective section insertion channel 148, the end surface of the perspective lens 142 is made to project beyond the end surface of the perspective lens frame 143 at the proximal side. Alternatively, the end surface of the perspective lens 142 may be brought into contact with the tip end side surface of the alignment section 126 forceps channel 27.

Further, in this example, the cover endoscope 7 is a normal cover endoscope for direct view, and the front end surface of the cover endoscope 7 (the front end surface of the cover endoscope cover glass 41 is 8) is inserted and fixed until it contacts the surface of the perspective lens 142. At this time, the side surface of the tip fitting portion 35 and the side surface of the objective lens alignment portion 126 on the proximal side do not come into contact with each other. As described above, by attaching the oblique-view cover 141 to the normal direct-viewing cover endoscope 7, the oblique-view cover endoscope 139 can be used. According to this example, since the perspective observation can be performed by using the normal cover endoscope 7, the normal cover 10 for direct view can be properly used. Further, it is only necessary to add one piece of the perspective lens 142 to the cover side as shown in the figure, and various observations can be performed by preparing the angle of the tip surface of the forceps outlet 22 and some kinds of the perspective lens 142. It is possible.

The cover type endoscope of FIG. 2 also has the following configuration. In other words, this means that when the endoscope fixing part for determining how much the cover endoscope should be inserted is not provided with respect to the cover, they are relatively displaced during the case. In this case, the cover endoscope can be easily attached to the cover. In FIG. 2, the cover endoscope 7 is covered with the cover endoscope 10. When it is inserted into, the front end surface of the cover endoscope 7 directly abuts the observation window cover glass 23. However, the tip end surface of the tip end fitting portion 35 does not come into contact with the surface on the proximal side of the objective lens alignment portion 126.

According to the above configuration, the cover 10 can be firmly fixed to the cover endoscope 7, and it is easy to understand how far the cover 10 should be inserted. Since the observation window cover glass 23 is firmly fixed, it does not shake even if it hits it, and even if the observation window cover glass 23 is scratched, it will be used only once and will not have much effect. Furthermore, since it is not necessary to perform extra processing (processing such as forming a dedicated contact surface), it is inexpensive. It should be noted that the cover endoscope cover glass 41 is placed on the hand side so that the cover endoscope cover glass 41 does not substantially hit, and the tip end surface of the objective lens fitting portion 34 directly abuts the observation window cover glass 23. By doing so, the cover endoscope cover glass 41 is not scratched, so that when such a surface is emphasized, it may be carried out as such. This point is the same in the cases of FIGS. 5, 6 and FIGS.

Next, with reference to FIG. 9 and FIGS. 10 to 12, a configuration example suitable for preventing the tube from being caught in the endoscope cover type endoscope with a channel will be described. In the case of an endoscope cover type endoscope with a channel, as shown in FIG. 9, when attempting to pull out the biopsy forceps 145 at a position near the portion where the forceps channel 27 is attached to the forceps insertion opening branch portion 28, If the inner surface of the forceps channel 27 has a large resistance, the forceps channel 27 is caught as shown in the drawing. Therefore, it is intended to prevent such tube entrainment.

The tube is prevented from being rolled up by providing an elastic member in a part of the forceps channel in the endoscope cover with a channel. In this case, the elastic member is preferably a bellows-like mechanism and is preferably rubber. In addition, the tube can be prevented from being rolled up by covering a part of the forceps channel with a protective member. In this case, preferably, the vicinity of the forceps insertion port branch of the forceps channel is covered with a protective member, and preferably the protective member is a tube or a pipe.

In the following example, the forceps channel 27 in the vicinity of the forceps insertion port branching portion 28 is modified, and in the case of FIG. 10, as shown in the figure, one end of the forceps channel 27 is elasticized over a length of 5 cm, for example. A bellows portion 146 as a member is provided. The length of the bellows portion 146 may be 5 cm or more, and when the bellows portion 146 contracts, its inner diameter does not become smaller than the inner diameter of the forceps channel 27. Further, only the bellows portion 146 may be made of a material different from that of the forceps channel 27, and the connection portion to the forceps insertion port branching portion 28 may be either the forceps channel 27 or the bellows portion 146. In this example, when the biopsy forceps 145 is to be pulled out, the forceps channel 27 is prevented from being caught as shown in the lower part of the drawing because the bellows part 146 contracts. it can. In addition, in the normal time after the contraction, it returns to the original state.

In the case of FIG. 11, the forceps channel 27 is cut into two near the end of the forceps channel 27, and the elastic member 147 is attached. In normal times, the elastic member 147 returns to its original state as shown by the solid line. For example, rubber can be used as the elastic member 147. Also in this example, as in the above-described configuration example, the effect of preventing entrapment can be obtained. In the example of FIG. 12, the channel protecting member 151 is covered so as to cover the forceps channel 27 by about 5 cm from the end portion on the distal end side of the forceps insertion port branching portion 28. The channel protection member 151 may be a Teflon tube or a plastic pipe. By doing so, the expansion of the forceps channel 27 is regulated by the channel protection member 151 as shown by the broken line, and as a result, the entrainment is prevented.

[0034]

[Effect of device]

 According to the present invention, since the tip of the tube is connected to the cover tip forming portion at a position closer to the optical window member on the tip surface side of the cover tip forming portion of the endoscope cover with channel, the tube tip end is connected to the cover tip forming portion. The tube can be connected closer to the hand side than the thickness of the optical window member. Therefore, the thickness of the tube does not become a factor to increase the outer diameter, and even with a larger optical window member, the optical window member can be placed closer to the forceps channel without considering the tube thickness. Can be installed, and it is possible to easily reduce the diameter of the cover, and thus the diameter of the endoscope with a channel-type endoscope cover system. The effect is great.

[Submission date] May 19, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

[Problems to be solved by the device]

 In this type of cover-type endoscope, an endoscope with a channel-type cover that uses a channel-attached cover has a distal end surface made of transparent glass or plastic for observation. In addition to the lighting window member, forceps channels, nozzles, etc. are arranged. Behind the window member (on the side of the hand), the distal end of the endoscope including the observation and illumination optical system on the side of the cover endoscope that is inserted during mounting is positioned so as to face it. One side in the radial direction of the cover is a space into which the endoscope for a cover is inserted in this way, and the combined endoscope for a cover can be mounted and used by inserting it into the space. On the other hand, the conduit tube extends to the opposite side and reaches the cover tip side from the hand side to connect with the tip forming part.In that case, the tube tip is aligned with the cover tip surface like the window member. Connection, an opening hole (a through hole that penetrates the tip part of the cover) corresponding to the cross-sectional area including the wall thickness of the tube is formed, which is a factor that increases the diameter of the endoscope cover with a channel. Becomes Since a window member with an outer diameter larger than that of the built-in object is arranged on the tip surface of the cover, an opening hole having a size including the wall thickness of the tube is required. With the structure in which the tip is aligned with the cover tip surface, the area corresponding to the tube wall thickness is occupied by the tube connection in the limited cover tip surface, and this tends to cause an increase in the outer diameter. This will hinder the reduction of the diameter of the cover. In order to reduce the diameter of the cover, keep a predetermined distance between the position of the window member mounting hole and the tube connection opening (through hole) in the radial direction on the cover tip surface. Even if they are brought close to each other, it is necessary to separate the window member and the tube from each other by the thickness of the tube. Also has certain limits. The endoscope cover with a channel has the above-mentioned convenient endoscope with a channel, which covers the endoscope for the cover with this, and the cover is thrown away after each use. However, from the viewpoint of alleviating the pain of the patient during use, it is preferable that the diameter be as small as possible and that the outer diameter be thick.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction content]

In the above description, the relationship between the observation window cover glass 23 and the forceps channel 27 has been described, but the present invention is not limited to this, and even if the observation window cover glass 23 is the light guide cover glass 124 or the forceps channel. Even if 27 is a tube for air supply / water supply following the air / water supply nozzle 125, the same effect can be obtained. That is, in any case, the tube can be connected to the cover tip forming portion 21 closer to the hand than the thickness of the cover glass, and the tube can be connected to the cover tip surface by aligning the tube tip with the thickness of the tube. Does not increase the outer diameter. Therefore, it is possible to bring them closer to each other in the cover tip component while maintaining a necessary space between them, and the cover glass is moved closer to the forceps channel or the like without considering the tube thickness. They can be arranged, and the restrictions are reduced and the degree of freedom in layout is increased.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

The tube is prevented from being rolled up by providing an elastic member in a part of the forceps channel in the endoscope cover with a channel. In this case, the elastic member is preferably a bellows-like mechanism and is preferably rubber. In addition, the tube can be prevented from being rolled up by covering a part of the forceps channel with a protective member. In this case, the vicinity of the forceps insertion port branching portion of the forceps channel is preferably covered with a protective member, and the protective member is preferably a tube or a pipe.

[Brief description of drawings]

FIG. 1 is an overall view of an example of an endoscope apparatus using an endoscope with a channeled endoscope cover system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a detailed structure of the insertion section cover section in a state where the insertion section cover section is attached to the endoscope for an endoscope cover with a channel.

FIG. 3 is a front view of the tip of the endoscope cover with a channel shown in FIG.

FIG. 4 is a diagram for explaining the principle of reducing the diameter of an endoscope cover with a channel.

FIG. 5 is a diagram showing a main part of an example of an oblique-viewing cover-type endoscope configured to enable oblique-viewing.

FIG. 6 is a partial explanatory diagram of FIG.

FIG. 7 is a diagram showing a main part of another example of the oblique-viewing cover-type endoscope configured to enable oblique-viewing.

FIG. 8 is a partial explanatory diagram of FIG. 7.

FIG. 9 is an explanatory diagram showing how the tube is wrapped in the endoscope cover with a channel.

FIG. 10 is a principal part explanatory view of an example of an endoscope cover with a channel having a function of preventing the tube from being rolled up.

FIG. 11 is an explanatory diagram showing another example of the same.

FIG. 12 is an explanatory diagram showing still another example.

[Explanation of symbols]

 1 Cart 2 Light Source Device 3 Video Processor 4 Fluid Control Device 5 Endoscope Cover Extender with Channel 6 Monitor 7 Endoscope Cover Endscope with Channel 8 Curl Code 9 Endoscope Cover Type Endoscope with Channel 10 Endoscope cover with channel 11 Insert part cover part 12 Operation part cover 13 Universal cord cover 14 Expansion tube 15 Endoscope cover holder with channel 17 Angle knob cover 18 Endoscope cover holding member with channel 20 Holding member cover 21 Cover Tip configuration part 22 Forceps outlet 23 Observation window cover glass (cover side) 27 Forceps channel 27a Tube 28 Forceps insertion port branching part 29 Forceps insertion port 30 Insert part cover outer skin 31 Endoscope insertion channel 32 Endoscope operation part fixing port Body 33 Expansion tube Body 34 Objective lens fitting part 35 Tip fitting part 36 Objective lens 37 CCD 38 Operating part fitting part 39 Holder mounting part 40 Operating part of endoscope for cover 41 Observation window cover glass of endoscope for cover 44 forceps channel fitting part 45 insertion part of endoscope for cover 47 endoscopic tip insertion channel 49 endoscopic operation part insertion channel 50 endoscope objective lens insertion channel 51 laser device 52 laser probe 53 foot switch 73 Suction line 74 Water supply line 75 Air supply line 124 Light guide cover glass (cover side) 125 Air supply and water supply nozzle 126 Objective lens alignment part 139 Perspective cover type endoscope 140 Perspective endoscope for cover 141 Perspective cover for perspective 142 Lens for strabismus 143 Lens frame for squint 145 Biopsy forceps 146 Bellows part 147 Elastic member 148 Covering endoscope objective part insertion channel 149 Diagonal lens frame channel 155 Channel protection member 244 Universal cord 256 Connector part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshihiro Iida 2-43-2 Hatagaya, Shibuya-ku, Tokyo Within Olympus Optical Co., Ltd. (72) Akira Suzuki 2-43 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Minoru Yamazaki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Osamu Mizuta 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Industry Co., Ltd. (72) Hiroshi Ishii 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Industry Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An endoscope cover with a channel, which includes a tube extending from a cover tip forming portion to a hand side and has an optical window member on a tip surface side of the cover tip forming portion, and an endoscope with the channel. An endoscope of an endoscope cover system with a channel, which comprises an endoscope for an endoscope cover with a channel to be inserted into a cover, wherein the tip of the tube is located at a position closer to the hand than the optical window member. An endoscope with a channel-equipped endoscope cover characterized by being connected to.