JPH0666606U - Endoscope with channel cover system - Google Patents

Abstract

(57) [Summary] [Purpose] An inexpensive endoscope cover system with a channel that has both excellent workability and ease of mounting when combined, and is easy to manufacture. To provide an endoscope. [Structure] A portion that is a fitting portion on the distal end side and the proximal side of both of the cover endoscope 7 and the cover 10 is a distal end insertion channel that is fitted to the cover endoscope at the distal end portion of the cover. The fitting part with the tip of the cover endoscope is also fitted with the operation part fixing part insertion channel that fits with the cover endoscope at the rear end part of the cover and the operation part fixing part of the cover endoscope. Each of the parts has a non-circular cross section, and the insertion portion 45 of the cover endoscope has a circular cross section. Compared to the configuration where the tip side and the hand side can be easily attached by aligning the vertical direction of both, and the end section and the hand side are partly deformed compared to the configuration with a deformed cross section over the entire length of the endoscope. It has good workability and can be manufactured at low cost.

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 that covers the cover endoscope and the cover is disposable, when a cover type endoscope that uses a cover with a channel as the endoscope cover is put into practical use, Do the following: That is, the endoscope side for the cover (non-disposable) is supposed to be equipped with an observation and illumination optical system, etc., while the disposable cover side is equipped with a treatment instrument insertion channel, an air / water supply channel, and An optical window member made of transparent glass or plastic for the optical system is provided at the distal end portion, and an endoscope insertion channel for inserting and fixing the endoscope for a cover is provided. In the case of an endoscope cover type endoscope with a channel, such an endoscope for a cover and an endoscope cover with a channel are mounted and used in combination. Regarding the shape of the tip part of the mirror insertion channel, if we consider the points such as the alignment of both at the time of mounting and the effective arrangement of many components as described above on the tip side, It is preferable that the cross section has an irregular shape, for example, a non-circular D shape. However, because of such a modified cross-section configuration, if the other cover endoscope to be combined also has an outer diameter shape of D-shaped cross section over the entire surface (overall length), the workability of parts will deteriorate significantly. As a result, it is expensive and expensive to manufacture.

Therefore, the object of the present invention is to provide an inexpensive channel with excellent workability of parts, which can achieve both the ease of mounting in the combination described above and the aspect of manufacturing. An object of the present invention is to provide an endoscope with an endoscope cover system.

[0006]

[Means for Solving the Problems]

 The endoscope with a channel-equipped endoscope cover of the present invention has a channel including an endoscope cover with a channel and an endoscope for an endoscope cover with a channel inserted into the endoscope cover with a channel. An endoscope with an endoscope cover system, wherein the endoscope cover with a channel has a distal end insertion channel having a non-circular cross section, which is fitted to the endoscope cover for a channel with an endoscope. In addition to having the operation part fixing part insertion channel of non-circular cross-section that fits with the endoscope for a channel-equipped endoscope cover, the rear end of the cover has an endoscope for a channel-equipped endoscope cover. Is characterized in that it has a distal end portion having a non-circular cross section and an operation portion fixing portion having a non-circular cross section, and that the insertion portion has a circular cross-sectional shape.

[0007]

[Action]

 In the present invention, the endoscope for a channel and the cover for an endoscope with the channel are inserted and combined in the endoscope cover with the channel, and the distal end side of both the combined cover endoscope and the cover are used. Regarding the part that will be the fitting part on the near side, the fitting part of the tip insertion channel that fits the cover endoscope at the tip of the cover and the fitting part of the tip portion of the cover endoscope for this also cover. The fitting portion of the operation portion fixing portion insertion channel that fits with the cover endoscope at the rear end portion and the fitting portion of the operation portion fixing portion of the cover endoscope with respect to this also have a non-circular cross section, respectively. The insertion part of the cover endoscope has a circular cross section. Therefore, in the endoscope of the present invention of the endoscope cover type with a channel, by doing so, when the endoscope cover with a channel and the endoscope for an endoscope cover with a channel are used in combination, While ensuring ease of mounting, etc., it is possible to avoid deterioration of the workability of parts during manufacturing, and it is possible to easily mount the top and bottom sides of the both in the vertical direction. Compared to a configuration in which the endoscope has a deformed cross-sectional outer diameter shape over the entire length, it is necessary to process the distal end and part of the proximal side to a deformed shape. Become.

[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. 3A, 3B, and 3C show cross sections of a portion corresponding to the line AA, a portion corresponding to the line BB, and a portion corresponding to the line CC of the endoscope cover with channel 10 itself in FIG. FIG. 4 shows an example of the appearance of the cover endoscope 7 alone to be combined, and FIGS. 5A, 5B, and 5C are front views of the distal end portion thereof, and EE cross-sectional views (flexible portions) of FIG. ) And DD sectional view (operation portion).

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. Although not shown in FIG. 2, an illumination window member provided at a position corresponding to the illumination optical system of the cover endoscope 7 to be inserted is also provided on the distal end surface of the cover distal end configuration portion 21. A transparent light guide cover glass (cover side) and an air / water nozzle 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).

Further, as shown in FIG. 2, a holder mounting portion 39 is provided on the week surface of the endoscope operation portion fixing mouth portion 32, and the endoscope operation portion fixing mouth portion 32 of the endoscope operation portion fixing mouth portion 32 is provided. The operation portion attachment portion 60 of the endoscope operation portion 40 is attached to the end portion side.

In this embodiment, in the endoscope 9 with such a channel-equipped endoscope cover system, as shown in FIG. 3, it is fitted with the cover endoscope 7 at the distal end portion of the insertion portion cover portion 11. The cover 10 is configured so as to include a front end insertion channel having a non-circular cross section and a non-circular cross section operation portion fixing part insertion channel that fits with the cover endoscope 7 at the rear end of the cover. As shown in FIGS. 4A and 4B, its front end, EE cross section, and DD cross section in FIGS. 5A, 5B, and 5C as a single endoscope, the distal end of the noncircular cross section and the operating portion of the noncircular cross section are fixed. And an insertion part having a circular cross section.

As shown in FIG. 4, the cover endoscope 7 includes the objective lens fitting portion 34, the light guide fitting portion 43, the leading end fitting portion 35, the bending portion 63, and the bending portion 63 from the distal end side. The cover endoscope insertion portion 45 in which the flexible portion 64 is arranged in this order, and the cover endoscope operation portion 40 having the operation portion fitting portion 38 are configured. The objective lens fitting portion 34 and the light guide fitting portion 43 are assumed to have substantially the same length, and as shown in FIG. 5, each of them serves as an observation window member on the side of the cover endoscope. The window cover glass 41 and the light guide cover glass 42 as a window member for illumination in the endoscope for a cover are located at the forefront. The objective lens portion fitting portion 34 and the light guide portion fitting portion 43 each have a cylindrical shape and project from the tip end surface of the tip end fitting portion 35. As shown in FIGS. 4 and 5A, the distal end fitting portion 35 has a non-circular D-shaped cross section here, and has the same or substantially the same outer diameter as the cover endoscope insertion portion 45. , Part of the top is cut out horizontally.

The curved portion 62 and the flexible portion 63 have a circular cross section over the entire length thereof (FIG. 5B), and the D-shape of the tip fitting portion 35 and the circular shape thereof are smoothly connected. The operation portion fitting portion 38 provided subsequent to the cover endoscope insertion portion 45 has a slightly larger outer diameter, and has the same D-shaped cross section (similar shape or the like) as the tip portion fitting portion 35. It has a shape. Regarding the cross-sectional shape of the operation portion fitting portion 38, for example, another shape such as an elliptical shape that can be aligned and may not be a circular cross-sectional shape. Further, following the operation portion fitting portion 38, the conduit insertion channel 46 through which the tubes of the channel-equipped endoscope cover 10 are inserted, and the attachment portion cover portion 11 of the cover 10 as shown in FIG. An endoscope operation section 40 having an operation section attachment section 60 and the like is provided.

Next, with reference to FIGS. 2 and 3 as well, the related configuration with the side of the cover 10 and the specific content of mounting the cover 10 and the cover endoscope 7 will be described. Corresponding to the objective lens fitting portion 34 and the tip fitting portion 35 on the side of the cover endoscope 7, the endoscope objective lens insertion channel 50 and the endoscope tip insertion channel 47 are covered. It is provided in the tip forming portion 21. That is, as shown in FIGS. 2 and 3, in the cover tip constituting portion 21 (see FIG. 3A of the AA cross section (front end portion) in FIG. 2), together with the air / water feeding channel 48 and the forceps channel 27. An endoscope distal end insertion channel 47 having a D-shaped cross section having a shape corresponding to the distal end fitting portion 35 on the cover endoscope 7 side is provided. Further, as shown in FIG. 3B showing a BB cross-section (hand side) part of FIG. 2, in the mouthpiece part 32 for fixing the endoscope operation part, the water supply pipe line in which the air supply / water supply channel 48 is separated. 74, an air supply conduit 75, and an endoscope operation section insertion channel 49 having a D-shaped cross section corresponding to the operation section fitting section 38 on the cover endoscope 7 side.

Mounting at the time of use is performed as follows. That is, when the cover endoscope 7 is inserted into the insert portion cover portion 11 of the cover 10, for example, if attention is paid to the objective lens portion fitting portion 34 of the cover endoscope 7, as shown in FIG. First, the objective lens portion fitting portion 34 is fitted to the endoscope objective lens portion insertion channel 50, and the tip portion fitting portion 35 is fitted to the endoscope tip portion insertion channel 47. Push it in until it comes into contact with the distal end surface of the endoscope 7. After that, the operation section fitting section 38 is inserted into the endoscope operation section insertion channel 49 while passing the suction tube path 73 and the like through the tube path insertion channel 46.

In the above-mentioned configuration, since the distal end side has a D-shaped deformed shape, if the insertion portion of the cover endoscope 7 is twisted, the insertion portion cover portion 11 of the cover 10 follows the cover endoscope 7. Also, the insertion portion 45 of the cover endoscope 7 does not rotate in the cover 10 because it is also twisted. Similarly, the operation portion fitting portion 38 of the cover endoscope 7 of the hand side attachment portion (and correspondingly, the endoscope operation portion of the endoscope operation portion fixing mouth portion 32 (color)) Since the insertion channel 49 has a modified D-shape, when the operation portion 45 is twisted, the insertion portion cover portion 11 of the cover 10 is also twisted following the endoscope 7 for the cover. The endoscope 7 does not rotate. As a result, the channel-equipped endoscope cover 10 and the cover endoscope 7 do not rotate relative to each other. Furthermore, if the operation portion mounting portion 60 is attached to the endoscope operation portion fixing mouth portion 32, It doesn't move back and forth.

According to the present embodiment, as described above, since only the distal end of the endoscope 7 for a channel-equipped endoscope cover and a part of the hand are processed into a deformed shape, the processability is good and the cost is low. Can be configured to. While ensuring ease of mounting when combining the cover 10 and the cover endoscope 7 at the time of use, the cover endoscope can be deformed over the entire length without deteriorating the workability of parts in manufacturing. Compared to the structure with an outer diameter in cross section, the tip and the part on the proximal side can be machined into a different shape, and the workability of parts is good and the cost is reduced accordingly. Due to the D-shape, it is also possible to easily attach them by aligning the vertical direction of the tip side and the hand side. Further, when the cover 10 is finally fixed to the cover 10, it is only necessary to perform the alignment, and since the alignment is only performed in this manner, the mounting, that is, the assembling with the cover is easy, and there is no displacement after the mounting. The operability is also good in this respect. In the above, the insertion part of the applicable endoscope for a cover has a uniform circular cross-section insertion part, but the insertion part may include a non-circular part in a part thereof, for example, the insertion part has a circular curved shape. It may be carried out in the form of a part and a non-circular soft part, or the opposite (non-circular curved part and circular soft part).

Next, another embodiment of the present invention shown in FIGS. 6 and 7 is a configuration example of the endoscope for the cover in the former case in the above-mentioned embodiment. The main parts will be described below. In FIGS. 6 and 7, the operation part fitting part 38 and the bending part 62 of the endoscope 7 for an endoscope cover with a channel have the same shape and the same outer diameter (FIG. 7B, D), including the front end of the tip of FIG. 7A, is D-shaped here. On the other hand, the flexible portion 63 has a circular shape having a diameter along its short axis (the length in the vertical direction in FIGS. 7B and D) (FIG. 7C). That is, the soft part 63 has a smaller diameter than the other parts. Further, the space inside the bending portion 62 (see FIG. 7B) is larger than the space inside the flexible portion 63 (see FIG. 7C). In FIG. 7, 64 is a signal cable, 65 is an LG (light guide) bundle, 66 is an angle wire, 67 is a cover endoscope soft part outer skin, 68 is a bending piece, 69 is A rubber, and 70 is an angle wire. The receiver 71 is an angle coil.

According to this embodiment, since the flexible portion 63 has a small diameter, if the distal end fitting portion 35 and the bending portion 62 are inserted first, the endoscope operation portion insertion channel 49 portion cannot pass through. Easy (ie easy). In addition, the bending angle in the bending portion 62 is larger than that in the flexible portion 63. Therefore, in order to secure a large bending angle for the curved portion, a large space is necessary inside, but as shown in FIGS. 7B and 7C, a wider space is formed inside the curved portion 62. Therefore, the above configuration is also suitable in that respect.

Next, a description will be given of an example of a configuration suitable for controlling the position between the tip of the cover 10 and the tip of the cover endoscope 7. In a cover-type endoscope, if dust enters between the cover glass on the cover side and the cover glass on the cover endoscope side, the observed image deteriorates. In some cases, it may be important to avoid that the cover glass comes into contact with the lens and the lens is scratched, which may affect the observed image. Therefore, in this configuration example, it is intended to prevent deterioration of the observed image due to dust or scratches. This is a cover-type endoscope configured so that the cover endoscope does not come into contact with the inner surface of the cover glass, or the front end surface (first surface of the object) of the cover endoscope is covered. It is realized by a cover-type endoscope which is configured so as not to come into contact with each other.

FIG. 8 is an enlarged explanatory view of an essential part of the cover distal end portion 21 of FIG. 2 in the process of inserting the cover endoscope 7. As shown in these drawings, the inside of the channel-equipped channel is shown. The endoscope cover 10 has an objective lens alignment portion 26 having an annular small projection-like shape, and this portion functions as an objective lens insertion position regulating portion. That is, this is set to an inner diameter smaller than the outer diameters of the observation window cover glass 23 and the objective lens section fitting portion 34 so that the observation window cover glass 23 and the tip of the cover endoscope 7 may abut. Further, the depth of the endoscope objective lens section insertion channel 50 is set and configured so as to be shorter than the length of the objective lens section fitting section 34 (projection length from the distal end fitting section 35).

Therefore, in the above-described configuration, when the front end portion of the cover endoscope 7 is inserted into the cover distal end configuration portion 21 (see the enlarged view of the insertion state in FIG. 8), first, the cover endoscope 7 front end surface is inserted. Collides with the objective lens alignment section 26, so that the observation window on the cover side does not come into direct contact with the cover glass 23, and a gap is formed between the cover glass 23 and the inner surface thereof. The advantage of this configuration example is that even if dust enters between both lenses, it does not interfere with the observation because it does not reach the lens surface. The deterioration of the observed image is prevented. Further, as a result, since the lenses do not directly contact each other, there is no damage near the center of the lens, and the observation window cover glass 23 is misaligned due to excessive insertion of the cover endoscope 7. Does not happen.

In the example of FIG. 9, as shown in the figure, the depth of the endoscope objective lens part insertion channel 50 is larger than the length of the objective lens part fitting part 34 to be inserted. (That is, deeper so that a gap is formed between the inner surface of the cover glass 23 and the inner surface of the cover glass 23 as illustrated). In this configuration, when the distal end portion of the cover endoscope 7 is inserted into the cover distal end constituting portion 21, the distal end fitting portion 35 distal end surface first abuts on the proximal side surface of the distal end position aligning portion 25, and therefore, The observation window cover glass 23 and the distal end surface of the endoscope cover endoscope 7 with a channel do not abut. Also in this example, the same effect as that of the above-described configuration example can be obtained. Further, in this case, the annular small protrusion-like processed portion as shown in FIGS. 2 and 8 is not necessary, and in this respect as well, the workability of the cover 10 is improved and the cost is reduced accordingly.

Further, the above can be implemented by the configurations shown in FIGS. 10 to 12 below. In the example of FIG. 10, the observation window cover glass 41 on the endoscope side is attached by slightly retracting from the tip of the objective lens fitting portion 34, and the outer peripheral edge portion of the objective lens fitting portion 34 is projected. . As a result, the projecting tip surface itself abuts the observation window cover glass 23 on the cover side as shown in the figure. In this case, the depth of the endoscope objective lens section insertion channel 50 is set shorter than the length of the objective lens section fitting section 34.

In the case of FIG. 11, the present invention is applied to a squint cover type endoscope 139 including a squint cover 141 and a squint endoscope 140 for a cover. As shown in the figure, when the cover perspective endoscope 140 is inserted into the cover endoscope objective section insertion channel 148, in accordance with the example of FIG. 10, the outer peripheral edge portion of the objective lens section fitting section 34 is The projecting tip surface is configured to abut the observation window cover glass 23. In addition, in the case of FIG. 12, the endoscope for cover 7 (for direct view described in FIG. 1 and subsequent figures) and the perspective cover 141 are configured in combination, and the perspective lens 142 is also fixed on the cover side. A squint lens frame 143 is used and is fixed to a squint lens frame channel 149. In this example, the projecting tip surface of the outer peripheral edge portion of the objective lens fitting portion 34 comes into contact with the perspective lens 142 as shown in the figure. The depth of the objective lens portion insertion channel 50 is set according to the case of FIG. You may implement like each above example. These also have the same effects as those described above, and it is not necessary to provide the annular small projection-like processed portion as shown in FIGS.

Next, with reference to FIGS. 13 to 15, in a cover-type endoscope, it is preferable to use the same endoscope for a cover so that magnified observation can be performed, that is, for one cover. A configuration example suitable for enabling both magnified observation and normal observation that is not so with an endoscope will be described. When you try to magnify with a cover-type endoscope, if you replace it with a cover endoscope for magnifying observation that has a configuration for magnifying observation as a non-disposable cover endoscope, magnifying observation It should be easy to separate the ones for normal use and those for normal observation. However, if a cover endoscope that can be used for magnifying observation is separately provided and is used, the extra cover endoscope for magnifying observation is provided, and thus the user is burdened with a high cost. You will be forced.

Therefore, in this example, an attempt is made to enable magnified observation with the same cover endoscope. In a cover-type endoscope, an endoscope in which a magnifying lens portion is arranged in the tip observation window is used. The aim is to achieve this by using a mirror cover. In this case, the magnifying lens section is preferably a magnifying lens section composed of a cover glass and one lens following the cover glass, and preferably composed of a cover glass and two or more lenses following the cover glass. It is a magnifying lens section. Further, preferably, the magnifying lens section is a magnifying lens section composed of one lens.

In the example of the case of FIG. 13, the cover tip forming portion 21 of the endoscope cover with a channel is provided with a magnifying lens frame 55 as shown in the figure, and the observation window cover glass is provided on the tip side of the magnifying lens frame 55. 23, and a magnifying lens 54 on the hand side, respectively, and a magnifying lens frame 55 is fitted from the tip side of the cover tip forming section 21 so that the magnifying lens 54 contacts the objective lens alignment section 26. Here, the magnifying lens 54 has, for example, a magnifying power of 2 times. In this example, even with the same cover endoscope insertion portion 45, it is possible to perform magnifying observation at various magnifying powers by using the magnifying lens 54 having different magnifying power, and the cover having the cover endoscope inserting portion 45 for magnifying observation can be used. It is not necessary to separately prepare an endoscope for use and use it, and the cost is reduced accordingly.

In the case of FIG. 14, the observation window cover glass 23 is fixed to the tip side of the magnifying lens frame 55 as shown in the figure, while the magnifying lens 54a is first on the hand side, and then the interval can 59 is provided. The magnifying lens group 58 is assembled by dropping the magnifying lens 54b and the magnifying lens 54b, respectively. In this way, the magnifying lens frame 55 incorporating a series of lenses is inserted from the tip side of the cover tip forming section 21 and fitted until the magnifying lens 54b comes into contact with the objective lens alignment section 26. The magnifying lens group 58 may be a combination of two or more lenses. In this example, in addition to the same advantages as the above-described configuration, since the magnifying lens group 58 is used, it is possible to obtain a clear magnified image with little aberration even if the magnifying power is large.

In the example of FIG. 15, the magnifying lens 54 is fitted so as to come into contact with the objective lens alignment section 26 from the tip side of the cover tip forming section 21. That is, as shown in FIG. 15, a magnifying lens 54 is arranged at the tip of the cover tip forming portion 21. In the case of this configuration, magnified observation can be performed with a configuration in which only one lens is arranged on the front end surface of the cover, and in this respect, the configuration can be made more inexpensive.

Next, a configuration example of an endoscope cover with a channel suitable for preventing damage to the cover due to laser treatment will be described. In the cover according to this configuration, in the endoscope cover with a channel, at least the surface color of the outer cover of the insertion portion and / or the distal end configuration portion is a color that reflects laser light, preferably white. The cover tip forming portion 21 of the channel-equipped endoscope cover 10 shown in FIGS. 1 and 2 is made of, for example, plastic, but the surface thereof is, for example, a normal white pigment (for example, titanium dioxide (TiO ₂ ) Or zinc (ZnO) etc.). Further, a metal powder pigment (aluminum powder, gold powder, or the like) having a high laser light reflectance may be used. Further, the insertion portion cover outer cover 30 of the cover 10 is made of a flexible resin material such as rubber or polyethylene, but its surface is also white-treated. The material itself may be white, or a pigment may be mixed during molding. The surface color may be any color that reflects laser light.

With the above configuration, when the cover type endoscope 9 is used, the laser probe 52 of the laser device 51 shown in FIG. 1 is used, and the laser probe 52 is projected from the forceps outlet 22 of the cover 10. Even when the laser probe 52 is used, even if the laser light is reflected by the cover tip forming portion 21 of the cover 10 and the insertion portion cover outer skin 30, it is not absorbed. The surface of the outer cover skin 30 is not burnt. Therefore, according to this configuration, the cover 10 is not damaged even during laser treatment using the laser probe 52 of the laser device 51, so that other parts such as the endoscope with channel-equipped endoscope cover 7 are not contaminated.

Next, with reference to FIGS. 16 to 17, description will be given of respective configuration examples of the mouthpiece and the sliding tube for the cover type endoscope, which are suitable for improving the durability of the cover. First, the cover-type endoscope mouthpiece will be described. The mouse piece 56 shown in FIG. 16 is a cover-type endoscope mouthpiece having a main body made of polysulfone. The mouthpiece 56 is used during an endoscopic examination for the upper digestive tract. That is, it is attached to the oral cavity of a patient and the cover-type endoscope 9 is inserted into the body cavity through the mouthpiece 56. Here, the mouthpiece 56 has a lubricating seal 57 on the inner surface of the insertion portion, and the material of the lubricating seal 57 is, for example, polyetherimide, Teflon, PFA or the like. That is, the material of the lubricating seal 57 is selected to have better slipperiness than the mouthpiece 56. The lubrication seal 57 can be attached to the inner surface of the mouthpiece 56 and can be replaced.

According to the mouthpiece 56 having the above-described configuration, since the lubrication seal 57 has good slipperiness, the insertion section cover skin 30 of the insertion section cover section 11 of the cover 10 of the cover type endoscope 9 is not damaged. . Therefore, when the cover type endoscope is used in combination with the mouthpiece 56, the durability of the cover 10 can be improved. Also, since the lubrication seal 57 can be replaced, it may be removed and put in an autoclave. Not limited to the above configuration, the mouthpiece body itself is made of the material of the lubrication seal 57, so that the lubrication seal 57 is not attached to the inner surface of the insertion portion and the mouthpiece main body is used as it is when the endoscope for upper digestive tract is used. It may be configured to be used as a mouthpiece.

FIG. 17 shows a sliding tube for a cover type endoscope, and the sliding tube 61 is made of the same slippery material as the lubricating seal 57 described in the example of the mouthpiece. Further, according to the above-mentioned example, if a lubricous seal is formed into a tape and attached to the inner surface of the sliding tube body for a cover type endoscope, the same sliding performance can be obtained. The sliding tube 61 is used during endoscopic examination of the large intestine or the like. Also in this example, since the slipperiness is good, similarly, when the cover type endoscope is used, the cover 30 of the insertion portion is not damaged.

[0045]

[Effect of device]

 According to the present invention, the portions of the endoscope cover with the channel and the endoscope for the endoscope cover with the channel used in combination therewith, which are the fitting portions at the distal end side and the proximal side, are covered. Non-circular cross-section of the tip insertion channel of the tip and the tip of the cover endoscope, and the operation channel fixing section insertion channel of the cover rear end and the operation portion fixing section of the cover endoscope, respectively. In addition, since the insertion part of the cover endoscope has a circular cross-section, it is attached when using the endoscope cover with channel and the endoscope for cover with channel when using. In addition to the ease of mounting, it is possible to avoid deterioration of workability such as in the case where the cover endoscope has a modified cross-sectional outer diameter shape over the entire length, and therefore, the workability of parts is improved. Good and cheap to manufacture It can, it is possible to realize them both.

[Submission date] May 19, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007]

[Action]

 In the present invention, the endoscope for a channel and the cover for an endoscope with the channel are inserted and combined in the endoscope cover with the channel, and the distal end side of both the combined cover endoscope and the cover are used. Regarding the part that will be the fitting part on the near side, the fitting part of the tip insertion channel that fits the cover endoscope at the tip of the cover and the fitting part of the tip portion of the cover endoscope for this also cover. The fitting portion of the operation portion fixing portion insertion channel that fits with the cover endoscope at the rear end portion and the fitting portion of the operation portion fixing portion of the cover endoscope with respect to this also have a non-circular cross section, respectively. The insertion part of the cover endoscope has a circular cross section. Therefore, in the endoscope of the present invention of the endoscope cover type with a channel, by doing so, when the endoscope cover with a channel and the endoscope for an endoscope cover with a channel are used in combination, While ensuring ease of mounting, etc., it is possible to avoid deterioration of the workability of parts during manufacturing, and it is possible to easily mount the top and bottom sides of the both in the vertical direction. Compared to a configuration in which the endoscope has a deformed cross-sectional outer diameter shape over the entire length, it is necessary to process the distal end and part of the proximal side to a deformed shape. Become.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

The mouthpiece portion 32 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).

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction content]

Further, as shown in FIG. 2, a holder mounting portion 39 is provided on the peripheral surface of the endoscope operation portion fixing mouth portion 32, and the endoscope operation portion fixing mouth portion 32 of the endoscope operation portion fixing mouth portion 32 is provided. The operation portion attachment portion 60 of the endoscope operation portion 40 is attached to the end portion side.

[Procedure amendment 4]

[Document name to be amended] Statement

[Name of item to be corrected] 0045

[Correction method] Change

[Correction content]

[0045]

[Effect of device]

 According to the present invention, the portions of the endoscope cover with the channel and the endoscope for the endoscope cover with the channel used in combination therewith, which are the fitting portions at the distal end side and the proximal side, are covered. Non-circular cross-section of the tip insertion channel of the tip and the tip of the cover endoscope, and the operation channel fixing section insertion channel of the cover rear end and the operation portion fixing section of the cover endoscope, respectively. In addition, since the insertion part of the cover endoscope has a circular cross-sectional shape, it can be mounted when using the endoscope cover with a channel and the endoscope cover with a channel when using. In addition to the ease of workability, it is possible to avoid the deterioration of workability such as in the case of a configuration in which the cover endoscope has a modified cross-sectional outer diameter shape over the entire length, and therefore the workability of parts is also improved. Good and cheap to manufacture It can, it is possible to realize them both.

[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.

3 is a portion corresponding to line AA in FIG. 2, a portion corresponding to line BB,
FIG. 6 is a cross-sectional view of an example of an endoscope cover with a channel in each of the positions corresponding to the lines C and C.

FIG. 4 is a perspective view showing an example of an outer appearance of an endoscope for an endoscope cover with a channel.

5 is a front view of the tip of the cover endoscope of FIG. 4 and examples of the EE cross section and the DD cross section of FIG.

FIG. 6 shows a main part according to another embodiment of the present invention,
It is a perspective view which shows the other example of the external appearance of the endoscope for endoscopes with a channel.

FIG. 7 is a front view of the front end of the cover endoscope of FIG. 4 and examples of the FF cross section, the GG cross section, and the HH cross section in FIG.

8 shows an example of a structure for regulating the position between the tip part on the cover side and the tip part of the cover endoscope, in which the cover endoscope is inserted in the cover tip structure part of FIG. It is a principal part expansion explanatory drawing in the process.

FIG. 9 is an explanatory view showing another example of the configuration for similarly controlling the position between the tip portion on the cover side and the tip portion of the cover endoscope.

FIG. 10 is an explanatory diagram similarly showing still another example.

FIG. 11 is an explanatory view showing still another example.

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

FIG. 13 is an explanatory diagram of a main part of an example of a cover configured to enable magnified observation.

FIG. 14 is likewise an explanatory view showing another example.

FIG. 15 is an explanatory view showing still another example.

FIG. 16 is a diagram showing an example of a mouthpiece for a cover-type endoscope.

FIG. 17 is a view showing an example of a sliding tube for a cover type endoscope.

[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) 24 Objective lens insertion regulation part 25 Tip position alignment part 26 Objective lens alignment part 27 Forceps channel 28 Forceps insertion port branch part 29 Forceps insertion port 30 Insert part cover Outer skin 31 endoscope Input channel 32 Endoscope operation part fixing mouth part 33 Expansion tube mouth part 34 Objective lens part fitting part 35 Tip fitting part 36 Objective lens 37 CCD 38 Operating part fitting part 39 Holder mounting part 40 For cover Operation part of endoscope 41 Observation window cover glass of endoscope for cover 42 Light guide cover glass of endoscope for cover 43 Light guide fitting part 44 Forceps channel fitting part 45 Insert part of endoscope for cover 46 Pipeline Insertion Channel 47 Endoscope Insertion Channel 48 Air Supply / Water Supply Channel 49 Endoscope Operation Section Insertion Channel 50 Endoscope Objective Lens Insertion Channel 51 Laser Device 52 Laser Probe 53 Foot Switch 54 Magnifying Lens 55 Magnifying Lens Frame 56 Mouthpiece 57 Lubrication seal 58 Magnifying lens group 59 Interval can 60 Operation Attachment part 61 Sliding tube 62 Curved part 63 Soft part 64 Signal cable 65 LG (light guide) bundle 66 Angle wire 67 Endoscope soft part outer cover for cover 68 Curved piece 69 A rubber 70 Angle wire receiver 71 Angle coil 73 Suction line 74 Water Supply Line 75 Air Supply Line 139 Perspective Cover Type Endoscope 140 Cover Perspective Endoscope 141 Perspective Cover 142 Perspective Lens 143 Perspective Lens Frame 148 Cover Endoscope Objective Insert Channel 149 Perspective Lens Frame channel 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 of an endoscope cover system with a channel, comprising an endoscope cover with a channel and an endoscope for an endoscope cover with a channel that is inserted into the endoscope cover with a channel. The channel-equipped endoscope cover has a tip insertion channel having a non-circular cross section that fits with the channel-covered endoscope cover endoscope, and the channel-equipped endoscope cover has the channel. The endoscope cover endoscope with a channel has a non-circular cross-section operation portion fixing portion insertion channel that fits with the endoscope cover endoscope. An endoscope of the endoscope cover system with a channel, characterized in that the operation section fixing section and the insertion section have a circular cross-sectional shape.