JP3450510B2 - Cover-type endoscope - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover type endoscope which is used by mounting a cover on an endoscope body.

[0002]

2. Description of the Related Art In recent years, in the medical field and the like, a cover used by attaching a replaceable cover (hereinafter referred to as an endoscope cover) to an endoscope main body (hereinafter referred to as a cover endoscope). Expression endoscopes have been proposed.

In the cover type endoscope, an endoscope cover for covering the cover endoscope has a structure in which a flexible outer sheath and a channel are joined between a hard tip cover and a proximal mouth portion. Commonly used. In such an endoscope cover, when the cover is attached, the tip cover is a tip constituent part of the cover endoscope, and the proximal mouth part is a part of the operation portion of the cover endoscope. It is fixed so as to cover the insertion portion and the like of the endoscope for a cover.

[0004]

SUMMARY OF THE INVENTION With a conventional cover type endoscope, when the endoscope cover is to be removed from the cover endoscope after the inspection after the endoscope cover is mounted, the distal end of the endoscope can be removed. The cover must be removed by sliding the outer sheath from the elongated endoscope insertion part while releasing the fixed state between the cover and the endoscope tip part, and the proximal mouth part and the endoscope operation part. There was a problem that the attachment and detachment work of was complicated and time-consuming. At this time, since there is not much space between the endoscope insertion portion and the outer sheath, friction between them is large, and the longer the insertion portion length, the more time-consuming it takes to remove. Also, there is a risk of accidentally reusing the contaminated cover to be discarded after use.

The present invention has been made in view of these circumstances, and an object of the present invention is to provide a cover-type endoscope capable of easily performing the work of removing the cover from the endoscope body. .

[0006]

A cover type endoscope according to the present invention comprises a cover endoscope, a tip cover that engages with a tip forming portion of the cover endoscope, and a joint portion to the tip cover. A sheath that covers the insertion part connected via, a hand mouth part connected to this sheath via a joint part, and an operation part connected to this hand mouth part via a joint part. In an endoscope cover including an operating section cover for covering and a cover-type endoscope used by mounting the endoscope cover on the cover endoscope, a joint between the distal end cover and the sheath is provided. the bonding strength is not canceled bonded state by a tension force generated in the sheath when it is curved interpolation join the club, the
With a force larger than the pulling force, the tip cover and sheath
Is set so that it can be divided, and the joint strength of the joint between the sheath and the proximal mouth body is determined by the insertion portion and the sheath when the endoscope cover is attached to the cover endoscope. The joined state is not released by the frictional force generated between them ,
By the force larger than the frictional force,
Was set to be divided, the bonding strength of the bonding portion, mosquitoes also have a bar grab endoscope cover the front cover in the attached state bonding state between the operation unit cover and the proximal port body section Is not released , grab the operation cover and
Operation at the joint and the operation when holding a medical endoscope
With a force that is greater than the force that pulls it away from the cover
It is characterized in that the mouthpiece body portion and the operation portion cover are set to be separable, and the joint portion between the distal end cover and the sheath has a joint strength of 2.0 kg to 6.0 kg, and the sheath and the mouthpiece portion. The joint between the body and 1.5kg ~ 6.0
It is characterized in that the joint strength is set to kg, and the joint portion between the proximal body portion and the operation portion cover is set to 2.0 kg to 6.0 kg.

[0007]

Cover-type endoscope according to work for the present invention, the bonding strength of the joint between the end cover and the sheath of the endoscope cover, by means of the tension generated in the sheath when it is curved interpolation join the club is The bonded state is not released and the pulling force
Split tip cover and sheath with greater force
Set As can be caused between the insertion portion and the sheath in order to attach the bonding strength of the joint, the endoscope cover cover endoscope between the sheath and the proximal port body section The joined state is not released by the friction force,
Greater force can separate the sheath and proximal mouth
Set to that, the bonding strength of the bonding portion, releasing the bonding state even with the endoscope cover by grasping the front cover in cover attached state between the operation unit cover and the proximal port body section not, the endoscope cover by grasping the operation cover
The mouth part and the operation part cover that occur at the joint when held
With a force greater than the force that pulls the
And the operation section cover are set to be separable.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration explanatory view showing the overall configuration of a cover-type endoscope according to a first embodiment of the present invention.

The cover-type endoscope 1 of this embodiment includes a cover endoscope 2 which is an endoscope body to which the cover is attached, and an endoscope which is detachably attached to the cover endoscope 2. Cover 3
It consists of a combination with.

The endoscope 2 for a cover is provided at a distal end forming portion 10 provided with an observation optical system, an elongated and flexible insertion portion 11 to be inserted into an observation site, and a base end portion of the insertion portion 11. A taper-shaped dome section 12, an operation section 13 that also serves as a thick grip section, and a universal cord 14 that extends from the operation section 13 and has a built-in light guide, signal line, and the like are connected in series. .

On the other hand, the endoscope cover 3 covers the distal end cover 4 formed of a hard or semi-rigid resin or the like that engages with the distal end forming portion 10 of the cover endoscope 2, and the cover outer cover that covers the insertion portion 11. Sheath 5 formed of a flexible resin or the like, which is formed of a flexible resin or the like, and an odome cover 6 formed of a flexible resin or the like, and a hard or semi-hard resin or the like that engages with a part of the operating portion 13. Hand body part 7 and operation part 13
And an operation portion cover 8 formed of a flexible resin or the like for covering the above.

Inside the sheath 5, a conduit 9 for passing a treatment tool, a fluid, etc. is arranged, and the ends of the conduit 9 are connected and fixed to the distal end cover 4 and the proximal mouth portion 7, respectively. The respective constituent elements of the endoscope cover 3 are joined to each other at the joint portions 16 to 21 by connecting means such as adhesion, welding, press fitting, or tightening of the heat shrinkable tube 22. Further, the proximal mouth portion 7 is provided with a treatment instrument insertion port 23 communicating with the conduit 9, and a treatment instrument plug 24 is detachably attached to the treatment instrument insertion port 23.

When the endoscope 2 for cover is attached to the cover endoscope 2 as shown in FIG. 1, the distal end cover 4 and the distal end constituting portion 10, the proximal mouth portion 7 and a part of the operating portion 13 are respectively provided. The cover-type endoscope 1 is fixed by frictional force or mechanical engagement and can be used as an integrated cover-type endoscope 1.

In the cover-type endoscope 1 having such a structure, when the endoscope cover 3 is attached to the cover endoscope 2, the cover endoscope is held while holding the proximal mouth portion 7. The second insertion portion 11 is inserted into the sheath 5 of the endoscope cover 3. At this time, the insertion portion 11 and the sheath 5 (or the sheath 5
Since a frictional force is generated between the inner pipe line 9), the insertion portion 11 must be inserted against this frictional force. Since this frictional force is about 2 kg when it is large, the joint strength of the joint portions 18, 19, 20 needs to be larger than 2 kg in order to prevent the endoscope cover 3 from being destroyed when the cover is attached.

Further, assuming that the user holds the cover-type endoscope 1 by grasping only the operation section cover 8 in the state where the cover-type endoscope is attached, the weight of the cover-type endoscope 1 is about 1 and is heavy. Since it is 0.5 kg, the joint strength of the joint portion 21 needs to be larger than 1.5 kg.

Further, at the time of inspection, the insertion portion 11 forms a loop or the insertion portion 11 is curved, whereby the conduit 9 and the sheath 5 are pulled with respect to the distal end cover 4. Since the maximum is about 2 kg, the joint strength of the joint portions 16 and 17 needs to be larger than 2 kg.

In this embodiment, by joining the respective constituent elements with the above-described joining strength, it is possible to prevent the endoscope cover 3 from being broken when the cover is attached or when inspecting.

On the other hand, from the state where the cover is attached as shown in FIG.
When the endoscope cover 3 is to be removed from the cover endoscope 2 after the inspection is completed, it is difficult to remove all the constituent elements of the endoscope cover 3 while simultaneously moving them. At this time, if the constituent elements are divided and sequentially removed, the work of removing the cover becomes easy. However, if the joint strength of each of the joint portions 16 to 21 described above is excessively high, the joint cannot be divided. Therefore, the upper limit of the joint strength needs to be a strength such that the user can pull and divide.

Normally, when a person holds a cover-type endoscope 1 (especially the insertion portion 11) with a size in both hands and pulls it,
The amount of tensile force that can be generated without any particular effort is considered to be up to about 6 kg. Therefore, the joint strength of the joint portions 16 to 21 is
It is preferable that the weight is larger than 2.0 kg (1.5 kg for the joint portion 21) and 6 kg or less.

Two specific examples of the procedure for removing the endoscope cover 3 are shown below.

In the first example of the procedure for removing the endoscope cover, the fixed state of the tip cover 4 and the tip forming portion 10 is first released from the state of FIG. Pull the cover 4. Then, the tip cover 4 is separated from the sheath 5 and the conduit 9 and removed. Next, when the conduit 9 is pulled with respect to the proximal mouth part 7, the conduit 9 is disengaged from the proximal mouth part 7. Next, the operation section cover 8 is pulled and divided with respect to the proximal mouth section 7.

Then, the mouthpiece portion 7 fixed to the operating portion 13 is removed from the operating portion 13 and pulled out toward the tip. At this time, the sheath 5 is also removed together with the proximal mouth portion 7, but since the conduit 9 inside the sheath 5 has already been removed, the gap between the sheath 5 and the insertion portion 11 is large, and both There is little friction between them. Therefore, if the mouthpiece 7 is pulled out in the distal direction, the sheath 5
Even move together without any particular load. Finally,
The operation section cover 8 is removed.

In the second example of the procedure for removing the endoscope cover, first, from the state shown in FIG. 1, first, the distal end cover 4 is pulled with respect to the proximal mouth portion 7, and the joint portion 18 (or 19) and the joint portion are formed. Isolate 17. Then, the tip cover 4 and the sheath 5 are removed. Next, the operating section cover 8 is removed from the proximal mouth section 7, the operating section cover 8 is removed from the universal cord 14 side, and finally the proximal mouth section 7 and the conduit 9 are removed in the distal direction. When the length of the operation portion cover 8 that covers the operation portion 13 is longer than the length that covers the operation portion 13, the work is easier to remove from the universal cord side as in this example.

The procedure for removing the endoscope cover is not limited to the above two examples, and various other procedures are conceivable.
A different removal procedure may be adopted according to the preference of the user.

As described above, in this embodiment, since the endoscope cover 3 can be divided when the cover is removed, the once used cover cannot be reused.

As described above, according to the configuration of this embodiment, it is possible to prevent the endoscope cover 3 from being damaged when the endoscope cover 3 is attached to the cover endoscope 2. When the endoscope cover 3 is detached from the cover endoscope 2, the endoscope cover 3 can be divided and easily removed, and the workability when attaching and detaching the cover can be improved. Further, since the endoscope cover 3 is divided when it is removed after use, it is possible to prevent the contaminated cover after removal from being accidentally reused.

2 to 4 relate to a second embodiment of the present invention. FIG. 2 is a perspective view showing the structure of the tip of a cover-type endoscope, and FIG. 3 shows the connecting structure of conduits inside the tip cover. FIG. 4 is a side view showing a configuration of a treatment instrument insertion port and a treatment instrument plug provided in the proximal mouth portion.

In the second embodiment, as a modified example of the structure of the endoscope cover, a structure example in which two conduits are arranged in the sheath so that two treatment tools can be inserted will be described.

As shown in FIG. 2, the endoscope cover 25 of this embodiment has a tip cover 26 as in the first embodiment, and the tip surface of the tip cover 26 is made of a transparent material. A lens cover 27, a nozzle 28, and an opening 29 for projecting a treatment tool are provided. One of the nozzles 28 is for air supply,
The other is provided for water supply. The opening 29 is formed in an oval shape (or an elliptical shape) and has a cross-sectional area that allows two treatment tools to be easily inserted therethrough.

As for the arrangement of the respective components in the tip cover 26, as shown in FIG. 2, a large-sized opening 29 is arranged in the central portion, and the nozzles 28 are arranged on both sides thereof so that the diameter of the tip portion can be minimized. Can be made smaller.

The internal structure of the tip cover 26 near the opening 29 is shown in FIG. Although only one opening 29 is provided on the tip surface of the tip cover 26, inside the tip cover 26,
The two conduits 30 and 31 for inserting the treatment tool are bundled and joined to the distal end cover 26, and these two conduits 30 and 31 communicate with the opening 29 and are integrated into one. The two conduits 30 and 31 may have the same size or different sizes.

As shown in FIG. 2, the width of the opening 29 in the major axis direction is set to be equal to or larger than the two inner diameters of the conduits 30 and 31. In FIG. 2, the inner diameters of the pipe lines 30 and 31 are indicated by broken lines. The width of the opening 29 in the major axis direction may be narrower than the two inner diameters of the ducts 30 and 31, but in any case, the size is set so that two treatment tools can be easily inserted.

In the case of the structure in which the two conduits 30 and 31 are provided in the endoscope cover 25 as described above, the mouth portion on the proximal side corresponds to the conduits 30 and 31 (not shown). Two treatment tool insertion ports and two treatment tool plugs are provided.

As a modified example, instead of the conduits 30 and 31, one conduit having an oval shape (or an elliptical shape) and two lumens having a size through which two treatment tools can be inserted is provided. You can also do it. In the case of this configuration, as shown in FIG. 4, one treatment instrument insertion port 33 and one treatment instrument plug 34 are provided in the proximal mouth portion 32, but the treatment instrument plug 34 has two insertion holes 35 and 36. You may use what you have.

Further, even in the structure in which the two pipe lines 30 and 31 are provided, the two insertion holes 35 and 3 as shown in FIG.
A treatment instrument plug 34 having 6 can be used.

In a cover type endoscope having two treatment instrument channels in the endoscope cover and capable of using two treatment instruments at the same time, as in the conventional case, two conduits are independently provided in the tip cover. In the structure in which the two openings are joined to each other and provided independently of each other, there is a problem that the diameter of the tip of the cover is increased by the thickness between the two openings. Therefore, as in the present embodiment, by bundling the two conduits 30 and 31 and joining them to the tip cover 26, the opening 29 can be made one and the tip cover 26 can be made thinner.

Further, by using the treatment instrument plug 34 having the two insertion holes 35 and 36 at the treatment instrument insertion opening of the proximal mouth portion as shown in FIG. 4, the cost can be reduced and the handling can be facilitated. You can

Thus, according to the configuration of the second embodiment, 2
This has the effect of making it possible to reduce the diameter of the tip of the cover-type endoscope that can use one treatment tool at the same time.

FIG. 5 is a structural explanatory view showing the structures of an endoscope cover and a cover packing box according to the third embodiment of the present invention.

In the third embodiment, a packing state before using the endoscope cover will be described. Before use, the endoscope cover 3 is housed in a cover packing box 38 for storage and transportation. A handle 39 is provided on the upper surface of the cover packaging box 38 to clearly show the top and bottom of the cover packaging box 38. This handle 39 is the cover packing box 3
The structure may be integrally formed with the structure 8, or a separate body may be bonded. In addition, if the handle 39 is integrally formed, the cost can be reduced.

In the cover packaging box 38, the endoscope cover 3
Is the direction in which the tip cover 4 has the handle 39 (that is, upward)
It is stored in the state of facing to. This tip cover 4
A cap 40 made of a flexible material such as sponge, styrofoam, or elastomer is attached to the. The cap 40 may be configured so that it can be attached to the treatment instrument insertion port of the proximal mouth portion 7 so as to also serve as the treatment instrument plug 24. In this case, the treatment instrument plug 24 is separated from the cap 40. Since it is not necessary to prepare it, the cost can be reduced.

In the cover type endoscope, in order to facilitate insertion of the insertion portion 11 of the cover endoscope 2 into the sheath 5 of the endoscope cover 3, a powdered lubricant is provided inside the sheath 5. May have been applied. There may be some dust inside the sheath 5. If lubricant or dust is present on the inner surface of the sheath 5 while the endoscope cover 3 is being transported or stored, the lubricant or the like in the sheath 5 is an optical surface (lens cover) formed of a transparent member of the distal end cover 4. ), Which may hinder observation during inspection. Therefore, it is necessary to orient the tip cover 4 in the anti-gravitational direction until it is used in the inspection so that the lubricant or the like does not adhere to the optical surface of the tip cover 4.

Therefore, in this embodiment, the cover packing box 38 is used.
A handle 39 is provided on the upper surface of the cover packaging box 38 so that the top surface of the cover packaging box 38 is clearly shown with the surface having the handle 33 as the upper surface, and the tip cover 4 is packed in the cover packaging box 38 with the handle 39 facing upward. It has a structure. As a result, during transportation and storage, the tip cover 4 is placed in a state of facing the upper surface, so that the lubricant and dust in the sheath 5 do not adhere to the optical surface of the tip cover 4 and there is no problem during inspection. It can prevent the occurrence.

Further, a flexible cap 40 is attached to the tip cover 4.
By packing with the cover, it is possible to prevent the tip cover 4 from being damaged or the optical surface from being damaged by vibration or shock during transportation.

As described above, according to the construction of the third embodiment, the adhesion of the lubricant or the like to the optical surface of the tip cover during transport and storage and the damage of the optical surface are prevented, and the occurrence of obstacles during observation is eliminated. Therefore, good observation can be performed.

FIG. 6 is a structural explanatory view showing the structures of an endoscope cover and a cover packing box according to the fourth embodiment of the present invention.

The fourth embodiment shows another configuration example of the cover packaging box as a modification of the third embodiment. The cover packing box 41 of the fourth embodiment is configured in an elongated rectangular parallelepiped shape, and the endoscope cover 3 is housed in a substantially linear shape. Cover packing box 4
An upside-down display 43 indicating the antigravity direction (upward direction) is provided on the side surface 42 where 1 is located. The upside-down display 43 may be directly printed on the cover packaging box 41 or may be a sheet to which a sheet having such a display is attached.
In addition, the upside-down display 43 is not limited to one side,
Alternatively, it may be provided on all sides.

Also, on the upper surface 44 of the cover packing box 41,
This surface is the top surface, transportation with this surface facing up
A top display 45 is provided to indicate storage instructions. The lower surface 46 of the cover packaging box 41 can be opened and closed.

In the cover packing box 41, the endoscope cover 3 is packed and housed so that the tip cover 4 faces the upper surface 44. The other end side of the endoscope cover 3 has a proximal mouth portion 7
The operation portion cover 8 is folded and stored around the. The tip cover 4 and the mouth part 7 are the cover packing box 4
The endoscope cover 3 cannot be taken out from the cover packing box 41 only by opening the lower surface 46.

A cut line 47 is provided on one side surface of the cover packing box 41 along the longitudinal axis direction. By applying a force to tear the cut line 47, the cover packing box 41 is cut from the cut line 47. Can be divided. When the cover packaging box 41 is divided, the fixing of the tip cover 4 and the mouthpiece portion 7 by the cover packaging box 41 is released. The cut line 47 is formed, for example, by making only this portion thin, or by joining the cover packaging box 41 composed of two members at the cut line 47 portion.

In the cover-type endoscope using the cover packing box 41 having such a configuration, the side surface 42 and the upper surface 44 of the cover packing box 41 have the upside-down display 43 and the upper surface display 45 indicating the upward direction. Can recognize the vertical direction when handling,
Even during transportation and storage, the tip cover 4 is handled in a state of facing upward, so that the lubricant and dust in the sheath 5 do not adhere to the optical surface of the tip cover 4, and good observation can be performed. If the upside-down display 43 is provided on a plurality of surfaces or on all sides, the upside-down direction can be recognized from various directions. In this configuration, since the handle 39 as in the third embodiment of FIG. 5 is not provided, it is not bulky when handling a plurality of cover packaging boxes 41, and the workability is good.

When the endoscope cover 3 is attached to the cover endoscope 2, the lower surface 46 of the cover packaging box 41 is opened, and the distal end forming portion 10 and the insertion portion 11 of the cover endoscope 2 are attached to the mouthpiece. The sheath 7 is inserted from the rear end of the portion 7. At this time,
Since the cover endoscope 3 is held in the cover packing box 41 in a substantially straight line shape, the inserting operation is easy. At the time of inserting the cover, the cover packaging box 41 may not be directed upward as shown in FIG. 6 but may be operated in a direction that is easy for the user to do, whether the cover packaging box 41 is directed downward or obliquely downward. After the endoscope cover 3 is completely attached to the cover endoscope 2, the cover packing box 41 is divided from the cut line 47 to separate the cover packing box 41.
Is removed from the endoscope cover 3.

As described above, the cover packing box 41 also has a function as a mounting aid for the endoscope cover 3, but the cover packing box 41 is divided after the cover is mounted once. Cannot be used again. Therefore, 1
Even if the used endoscope cover 3 is removed from the cover endoscope 2 and then used again by mistake, the cover packaging box 41, which is a mounting aid, cannot be used. Therefore, a new cover packaging box 41 is used. Therefore, it becomes necessary to use the combination of the endoscope cover 3 and the endoscope cover 3, and the reuse of the cover can be prevented.

As described above, according to the structure of the fourth embodiment, it is possible to prevent adhesion of a lubricant or the like to the optical surface of the tip cover during transportation and storage, and to enable good observation. In addition to the effects of the example, the workability can be improved because the cover packaging box is not bulky during handling. Further, since the cover packing box can also be used as a cover mounting aid, workability at the time of mounting the cover can be improved and cost can be reduced, and further reuse of the cover can be prevented.

FIG. 7 is a structural explanatory view showing the structure of an endoscope cover and a cover discard bag according to the fifth embodiment of the present invention.

In the fifth embodiment, handling when discarding the endoscope cover after use will be described. The cover discard bag 48 for discarding the endoscope cover 3 after use is made of a flexible material such as a polymer material and has an opening 49 at the upper end thereof. The opening diameter D of this opening 49
Is set to be approximately the same as the maximum diameter d of the rigid or semi-rigid portion of the endoscope cover 3. In the endoscope cover 3, the treatment tool plug 24 may be soft, but the proximal mouth portion 7
In this case, it is regarded as a semi-rigid part because it cannot be greatly deformed when it is attached to. Therefore,
The maximum diameter d of the endoscope cover 3 is the treatment instrument plug 2 of the proximal mouth portion 7.
It is the diameter of the part including 4.

The opening 49 of the cover disposal bag 48 can be expanded and contracted by applying an external force. The overall shape of the cover disposal bag 48 may be a bag that is widened below the opening 49 as shown in FIG. 7, or may be an elongated shape that extends with the size of the opening diameter D of the opening 49. It may have a shape of.

After the endoscopic inspection, the endoscope cover 3 is removed from the cover endoscope 2, and the used endoscope cover 3 is put into the cover discard bag 48 through the opening 49 and discarded. To At this time, the opening diameter D of the opening 49 and the maximum diameter d of the endoscope cover 3 are substantially the same size, and the opening 49 is expandable, so that the endoscope cover 3 is placed in the cover discard bag 48. It is easy to discard.

In the cover disposal bag having a wide opening, when the used endoscope cover is disposed in the cover disposal bag, a part of the endoscope cover pops out or dirt attached to the cover is discarded. However, there is a problem that it is easy to get out of the waste bag. In addition, there is a problem that the workability is not so good because the widely opened opening must be contracted after the disposal.

In the cover disposal bag 48 of the present embodiment, the opening diameter D of the opening 49 is not made larger than necessary, so that the dirty endoscope cover 3 and dirt may be ejected from the opening 49 again. Absent. Further, since the opening diameter D of the opening 49 is not unnecessarily large, the work of closing the opening 49 after putting the endoscope cover 3 in the cover discarding bag 48 can be easily performed immediately.

Further, since the cover disposal bag 48 is larger below the opening 49, the endoscope cover 3 once inserted can be made difficult to come out again from the opening 49. Further, in this structure, since a plurality of covers can be put in one disposal bag and discarded, it is not necessary to prepare a large number of cover disposal bags 48, the cost can be reduced, and the handling can be facilitated.

As described above, according to the configuration of the fifth embodiment, it is possible to prevent a part of the discarded cover and dirt from coming out of the opening again, and it is easy to discard the cover after inserting the cover. It has the effect of providing a bag.

[Appendix] As described in detail above, according to the embodiment of the present invention, the following configuration can be obtained.
That is, (1) it has an endoscope for a cover and an endoscope cover that covers at least the insertion portion of the endoscope for a cover, and the endoscope for a cover is attached to the endoscope for use. In the cover-type endoscope, the endoscope cover is configured by joining a plurality of members, and when the endoscope cover is used, the joined state of the joined portions of the plurality of members can be maintained, and A cover-type endoscope characterized in that the joint strength of the joint is set so that the joint can be divided when the endoscope cover is removed from the cover endoscope.

(2) The cover type endoscope according to appendix 1, wherein the joint strength of the joint portion is larger than 2 kg.

(3) The cover-type endoscope described in appendix 2, wherein the joint strength of the joint is 6 kg or less.

(4) The endoscope cover includes an insertion section cover for covering the insertion section of the cover endoscope and an operation section cover for covering the operation section of the cover endoscope. The joint strength between the cover and the insert cover is 1.5.
The cover-type endoscope according to appendix 1, which is larger than kg.

(5) The cover type endoscope according to appendix 4, wherein the joint strength of the joint is 6 kg or less.

(6) The endoscope cover is constructed by joining a plurality of members including a hard tip portion, a flexible sheath, a flexible sheath inner duct, and a proximal mouth portion, and the joint portion is the distal end. Note 1 provided between at least one member of a hard portion and a soft sheath, the distal hard portion and a soft sheath inner conduit, the soft sheath and the proximal mouth portion, and the soft sheath inner conduit and the proximal mouth portion. The cover-type endoscope described in.

(7) The endoscope cover includes an insertion portion cover that covers the insertion portion of the cover endoscope and an operation portion cover that covers the operation portion of the cover endoscope. When removing the mirror cover from the cover endoscope,
The operation section cover is divided from the insertion section cover, the insertion section cover is configured to be removable in a distal direction, and the operation section cover can be removed to a universal cord side of the cover endoscope. Cover-type endoscope.

In the configurations of Supplementary Notes 1 to 7, the joint strength of each constituent element of the endoscope cover is maintained such that the joint state is maintained at the time of attaching the cover and at the time of inspection, and the joint is disengaged when the user applies a force during the removal. By setting, it becomes possible to easily divide and remove the endoscope cover. In addition, since the endoscope cover is divided at the time of removal, the used endoscope cover cannot be reused.

(8) A cover type endoscope having an endoscope cover for covering the cover endoscope is provided with a cover packaging box for packaging and storing the endoscope cover, and the anti-gravity direction is provided in the cover packaging box. A vertical direction indicating means for indicating is provided, and in the cover packaging box, the endoscope cover is arranged so that the tip end portion of the endoscope cover faces the antigravity direction corresponding to the direction indicated by the vertical direction indicating means. A cover-type endoscope characterized by being arranged.

(9) A cover-type endoscope as set forth in appendix 8, wherein a handle is provided on the upper surface of the cover packaging box as the vertical direction indicating means.

(10) The cover-type endoscope described in appendix 9, wherein the handle is integrally formed with the cover packaging box.

(11) The cover-type endoscope as set forth in appendix 8, wherein a cap made of a flexible material is provided at the tip of the endoscope cover.

(12) The cover-type endoscope according to appendix 11, wherein the cap also serves as a treatment tool plug that covers a treatment tool insertion port provided in a proximal mouth portion of the endoscope cover.

(13) The cover-type endoscope according to appendix 8, wherein the up-down direction indicating means comprises a display provided on the surface of the cover packaging box.

(14) The cover type endoscope according to appendix 13, wherein the display is provided on a plurality of surfaces of the cover packaging box.

(15) In the cover type endoscope having an endoscope cover which is mounted on the cover endoscope and covers the cover endoscope, the endoscope cover has two treatment instrument insertion conduits. And the above-mentioned 2 in the distal end hard portion of the endoscope cover.
A cover-type endoscope, characterized in that the distal ends of two conduits are bundled and joined together, and that one opening for projecting a treatment tool is provided in the distal end surface of the distal end hard portion so as to communicate with the two conduits.

(16) The cover-type endoscope described in appendix 15, wherein two nozzles for supplying air and water are arranged on both sides of the opening on the tip surface of the hard tip portion.

(17) The cover-type endoscope according to appendix 15, wherein the opening has an opening width that allows at least two treatment tools to be inserted therethrough.

(18) The cover-type endoscope as set forth in appendix 15, wherein a single treatment instrument plug having two insertion holes is provided in the proximal mouth portion of the endoscope cover.

(19) In a cover-type endoscope having an endoscope cover for covering the cover endoscope, a cover discard bag for storing the used endoscope cover for discarding the endoscope cover is used. In the cover type, the diameter of the opening of the waste bag is substantially the same as the maximum diameter of the hard portion or semi-rigid portion of the endoscope cover, and the opening is configured to be expandable and contractible. Endoscope.

(20) The cover-type endoscope according to appendix 19, wherein the cover discarding bag has a portion having a diameter larger than the opening diameter at a portion below the opening.

(21) The cover type endoscope according to appendix 19, wherein the cover discard bag has a capacity capable of storing a plurality of endoscope covers.

[0085]

As described above, according to the present invention, there is an effect that it is possible to provide a cover-type endoscope capable of easily performing the work for removing the cover from the endoscope body.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing the overall structure of a cover-type endoscope according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a configuration of a tip end portion of a cover-type endoscope according to a second embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a connection structure of pipe lines inside a tip cover according to a second embodiment.

FIG. 4 is a side view showing the configuration of a treatment instrument insertion port and a treatment instrument plug provided in the proximal mouth section.

FIG. 5 is a structural explanatory view showing a structure of an endoscope cover and a cover packaging box according to a third embodiment of the present invention.

FIG. 6 is a structural explanatory view showing a structure of an endoscope cover and a cover packaging box according to a fourth embodiment of the present invention.

FIG. 7 is a structural explanatory view showing a structure of an endoscope cover and a cover discard bag according to a fifth embodiment of the present invention.

[Explanation of symbols]

1 ... Cover type endoscope 2 ... Cover endoscope 3 ... Endoscope cover 4 ... Tip cover 5 ... Sheath 7 ... mouth part 8 ... Operation part cover 9 ... Pipe 10 ... Tip component 11 ... insertion part 13 ... Operation unit 14 ... Universal code 16-21 ... Joint 23 ... Treatment instrument insertion port 24 ... Treatment tool plug

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61B 1/00-1/32

Claims (2)

(57) [Claims] 1. An endoscope for a cover, a distal end cover that engages with a distal end forming portion of the endoscope for a cover, and a sheath that covers an insertion portion connected to the distal end cover via a joint portion, An endoscope cover provided with a proximal mouth portion connected to the sheath via a joint portion and an operation portion cover for covering the operating portion connected to the proximal mouth portion via a joint portion, In a cover-type endoscope that is used by mounting the endoscope cover on the cover endoscope, the joint strength of the joint between the distal end cover and the sheath is
Not canceled bonding state by a tension force generated in the sheath when it is curved interpolation join the club, larger than the pulling force
It is possible to divide the tip cover and the sheath by a force
Settings so that the bonding strength of the joint between the sheath and the proximal opening the body,
When the endoscope cover is attached to the cover endoscope, the joining state is not released by the frictional force generated between the insertion portion and the sheath, and the sheath is generated by a force larger than the frictional force.
Set to be divided and a proximal opening the body and, bonding strength, the cover by grasping the operation portion cover in cover attached state endoscope of the junction between the operation unit cover and the proximal port body section The joined state is not released even if you hold the
When the cover is grasped and the endoscope for the cover is held, the joint
Try to separate the mouth part and the operation part cover
With the force larger than the force
A cover-type endoscope characterized in that it is set so that it can be split . 2. The cover-type endoscope according to claim 1.
Te, 2.0Kg～ the junction between the end cover and the sheath
With a joint strength of 6.0 kg, the joint between the sheath and the proximal mouth is 1.5 kg to 6.0 kg, and the joint between the proximal mouth and the operating cover is <br/> characterized in that the bonding strength 2.0Kg～6.0Kg.