JP2003220024A - Endoscope forceps stopper - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a forceps stopper for an endoscope whose replacement time is easy to understand. An endoscope forceps plug according to the present invention is used by being installed in a proximal opening of a treatment instrument insertion channel, and is detachably installed in the proximal opening. 2 and a lid 3 detachably mounted on the main body 2. The cover 3 has a slit 32 through which a treatment tool can be inserted.
There is provided an opening / closing part 31 formed with. The main body 2 has a hole 231 through which the treatment tool is inserted. Near the base end opening 331 of the lid 3, the inner peripheral surface of the passage 33,
A coating layer 4 is formed on the base end surface of the first and second portions, the joining surface 321 of the slit 32, and the inner peripheral surface of the hole 231 of the main body 2. The color of the coating layer 4 is different from that of the base, that is, the color of the main body 2 and the lid 3. When the coating layer 4 is worn out due to friction with the inserted / removed treatment tool, the color changes due to the appearance of the base, so that it is easy to know that the wear has progressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forceps plug for an endoscope which is detachably installed in a proximal end opening portion of a treatment instrument insertion channel of an endoscope.

[0002]

2. Description of the Related Art A treatment instrument insertion channel (passage) for inserting and using a treatment instrument such as forceps, an incision instrument, a ligation instrument, and various sensors is provided inside an insertion portion of an endoscope. There is. With the endoscope insertion part inserted in the body cavity,
Various treatments can be performed by inserting the various treatment tools as described above from the base end opening of the treatment tool insertion channel and projecting from the tip end opening.

A forceps plug for an endoscope, which is made of an elastic material such as rubber, is installed at the proximal end opening of the treatment instrument insertion channel to prevent the liquid in the body cavity from leaking to the outside. ing. A slit is formed in the forceps plug for an endoscope, and the slit is pushed open to insert the treatment instrument into the treatment instrument insertion channel. Then, when the treatment tool is removed, the slit automatically closes due to elasticity to prevent leakage of liquid or the like in the body cavity.

Such a forceps plug for an endoscope is worn by friction with a treatment tool to be inserted. As the wear progresses, the adhesiveness when the slit is closed deteriorates, and the liquid or the like in the body cavity leaks.

However, in the conventional forceps plug for an endoscope, it is difficult to visually recognize how much the forceps plug should be used before it is replaced. The leakage of liquid etc. in the body cavity may be caused.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a forceps plug for an endoscope whose replacement time is easy to understand.

[0007]

The above objects are achieved by the present invention described in (1) to (10) below.

(1) The endoscope is used by being removably installed at the proximal end opening of the treatment instrument insertion channel, and is provided mainly with an elastic material and provided with an opening / closing portion having a slit formed therein. Is a forceps plug for an endoscope in which the slit is opened / closed by deforming the opening / closing part in accordance with the insertion / removal of, and the surface of the portion rubbing against the treatment tool to be inserted / removed, At least one coating layer having a color different from that of the underlayer is provided, and the coating layer is worn due to friction with the treatment tool to reveal the underlayer, thereby indicating a standard of replacement time. Mirror forceps plug. This makes it possible to provide a forceps plug for an endoscope whose replacement time is easy to understand.

(2) The forceps plug for an endoscope according to (1), wherein the coating layer is provided on a portion including at least a part of a joint surface of the slit. As a result, it is possible to notify the guideline of the replacement time in an easy-to-understand manner.

(3) The forceps plug for an endoscope according to (1) or (2), wherein the coating layer is provided on a portion including at least a part of a base end surface of the opening / closing portion. As a result, it is possible to notify the guideline of the replacement time in an easy-to-understand manner.

(4) The forceps plug for an endoscope according to any one of the above (1) to (3), which has a passage through which a treatment tool is inserted, on the proximal end side of the opening / closing portion. Thereby, the operation of inserting the treatment tool can be easily performed.

(5) The forceps plug for an endoscope according to (4), wherein the coating layer is provided on a portion including at least a part of an inner peripheral surface of the passage. As a result, it is possible to notify the guideline of the replacement time in an easy-to-understand manner.

(6) The forceps plug for an endoscope according to the above item 4, wherein the coating layer is provided in a portion including a vicinity of a proximal end opening of the passage. As a result, it is possible to notify the guideline of the replacement time in an easy-to-understand manner.

(7) A main body detachably installed in the proximal end opening of the treatment instrument insertion channel, and a lid body detachably installed in the main body, wherein the opening / closing section is the lid body. The forceps plug for an endoscope according to any one of (1) to (6) above, which is formed in the above.

As a result, various modes can be used by selecting attachment / detachment of the lid.

(8) The forceps plug for an endoscope according to (7) above, wherein the main body is provided with a partition wall portion having a hole through which a treatment instrument is inserted.

This makes it possible to more reliably prevent the liquid from leaking when the treatment instrument is inserted.

(9) The coating layer is provided on a portion including at least a part of an inner peripheral surface of the hole.
The forceps stopper for an endoscope according to. As a result, it is possible to notify the guideline of the replacement time in an easy-to-understand manner.

(10) The forceps plug for an endoscope according to any one of the above (1) to (9), wherein a plurality of coating layers having different colors are provided. As a result, it is possible to notify the standard of the replacement time step by step.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The forceps plug for an endoscope of the present invention will be described below in detail with reference to the preferred embodiments shown in the accompanying drawings.

<First Embodiment> FIG. 1 is a longitudinal sectional view showing a first embodiment of a forceps plug for an endoscope of the present invention, and FIG. 2 is shown in FIG.
FIG. 9 is a plan view showing an endoscope in which the forceps plug for the endoscope shown in FIG. In addition, in the following description, the upper side in FIGS. 1 and 2 is referred to as a “proximal end”, and the lower side is referred to as a “distal end”.

First, an example of the configuration of the endoscope will be briefly described with reference to FIG. The endoscope 10 shown in FIG.
It is an electronic endoscope, and has a flexible long insertion portion flexible tube 11 and a proximal end side of the insertion portion flexible tube 11, which is grasped by an operator and holds the entire endoscope 10. An operating section 12 to be operated, a bending section 13 provided on the distal end side of the insertion section flexible tube 11 and capable of remotely operating a bending state from the operating section 12, and a light source for connecting to a light source processor device (not shown). Insertion part 14,
It has a connecting portion flexible tube 15 that connects the operation portion 12 and the light source insertion portion 14. Inside the endoscope 10, built-in components (not shown) such as a light guide by an optical fiber bundle, an image signal cable, a cable, and tubes are arranged and inserted.

The forceps plug 1 for an endoscope of the present invention is not limited to an electronic endoscope such as the endoscope 10, but can be used for various endoscopes such as a fiber endoscope. It goes without saying that you can do it.

When the endoscope 10 is used, the light emitted from the light source in the light source processor device passes through the light guide and is irradiated to the observation site from the tip of the bending portion 13 to illuminate it.

An image pickup device (CCD) (not shown) for picking up a subject image in the observation region is provided at the tip of the curved portion 13, and an image signal corresponding to the subject image picked up by this image pickup device is the above-mentioned image signal. It is transmitted to the light source processor device through an image signal cable, subjected to predetermined processing, and then input to a monitor device (not shown). The monitor device displays an image (electronic image) captured by the image sensor, that is, a moving image of the endoscope monitor image.

A treatment instrument insertion channel 16 for inserting a treatment instrument is formed inside the insertion portion flexible tube 11 and the bending portion 13. The treatment instrument insertion channel 16 has a base end opening 161 in the projecting portion 121 formed on the operation portion 12, and a tip end opening 162 at the tip of the bending portion 13.

In the endoscope 10 as described above, various treatment tools (not shown) are inserted from the proximal end opening 161 with the insertion portion flexible tube 11 and the bending portion 13 being inserted into the body cavity. It can be used by being inserted into the channel 16 and protruding (exposed) from the tip opening 162. The usable treatment tool is not particularly limited, but for example, forceps such as biopsy forceps and grasping forceps, various sensors such as a body temperature sensor, electrodes for electrocardiographic measurement, incisions such as knives and laser scalpels. , Contrast tubes, washing tubes, drainage tubes, and other tubes (catheter), crushing probe (calculus tool), heat probe, injection needle, ligature tool, wires, and other treatment tools (inspection tool), etc. Is mentioned.

As shown in FIG. 1, the forceps plug 1 for an endoscope of the present invention is used by being installed in a proximal end opening (base) 161 of a treatment instrument insertion channel 16 and used. It has an opening / closing part 31 in which a slit 32 that can be inserted is formed.

The base end opening 161 is formed in a cylindrical shape (cylindrical shape) from the protruding portion 121. Further, a flange 163 is formed at the base end portion of the base end opening 161 so as to project radially outward in a ring shape.

The forceps plug 1 for an endoscope of the present embodiment comprises a main body 2 which is detachably installed in the base end opening 161, and the main body 2.
And a lid 3 that is detachably installed.

The main body 2 and the lid 3 are each made of an elastic material and are deformable (elastically deformable). As the elastic material forming the main body 2 and the lid 3,
Although not particularly limited, for example, various thermoplastic elastomers such as olefin elastomers, urethane elastomers, styrene elastomers, fluorine elastomers, silicone elastomers (silicone rubbers), nitrile rubbers (NBRs), hydrogenated nitrile rubbers (HNBs)
R), ethylene-propylene rubber (EPM, EPDM)
Various rubbers such as, and one or two of these
It is possible to use a mixture of two or more kinds (blend).

The main body 2 has a substantially cylindrical shape (barrel shape) as a whole, and the base end opening 16 is provided at the tip side thereof.
1 is installed in the inserted state. A fitting portion (reduced diameter portion) that protrudes in a ring shape is provided on the inner circumference of the tip side portion of the main body 2.
21 is formed. The base end opening 161 is inserted into and fitted to the inner circumference of the fitting portion 21, and the flange 163 is provided.
By engaging the base end surface of the fitting portion 21 with the front end surface of the
The main body 2 is fixed to the base end opening 161 while ensuring liquid tightness.

The main body 2 is attachable to and detachable from the base end opening 161 by elastically deforming so that the fitting portion 21 expands in diameter. As a result, the forceps plug 1 for the endoscope is abraded by friction with the treatment tool, and a slit 3 described later is formed.
When the adhesiveness of 2 deteriorates, it can be replaced with a new one.

A flange 22 is formed on the inner circumference of the base end of the main body 2 so as to project radially inward.

A partition wall portion 23 is provided between the fitting portion 21 and the flange 22 so as to separate (separate) the inner cavity of the main body 2.
Are formed. A hole 231 into which the treatment tool is inserted (inserted) is formed in the partition wall portion 23. The inner diameter of the hole 231 is preferably smaller than the outer diameter of the treatment tool. By providing the partition wall portion 23, as will be described later, it is possible to more reliably prevent the liquid from leaking when the treatment tool is inserted. In the present invention, the partition wall portion 23
May be omitted.

The lid 3 has a substantially bottomed cylindrical shape (bottomed cylindrical shape) having a bottom portion on the tip side, and the bottom portion constitutes an opening / closing portion 31. In the configuration shown, the opening / closing section 31
Is almost hemispherical and rounded.

The lid body 3 is installed in a recess 24 formed by being surrounded by the base end portion of the main body 2 and the partition wall portion 23.

At the center of the opening / closing part 31, a single character slit 32 is formed for inserting (inserting) a treatment tool. The shape of the slit 32 is not particularly limited, and may be, for example, a cross shape or an L shape.

The inner cavity of the lid 3 on the side closer to the base end than the opening / closing portion 31 is a passage 33 through which the treatment tool is inserted. By forming the passage 33, when the treatment instrument is inserted into the slit 32, the distal end portion of the treatment instrument is not displaced, and this operation can be easily performed.

An engagement portion 34 that engages with the flange 22 is formed in a ring shape on the outer periphery of the lid body 3. Lid 3
The body is fitted to the inner circumference of the flange 22, and the base end surface of the engaging portion 34 engages with the tip end surface of the flange 22, so that the body is liquid-tightly fixed to the main body 2.

The lid 3 and the main body 2 are elastically deformable so that the flange 22 and the engaging portion 34 can be disengaged from each other, and are removable.

A knob 35 projecting outward is formed at the base end of the lid body 3. When the lid body 3 is removed from the main body 2, the knob 35 is clamped and the lid body 3 is pulled. Can be removed.

A flexible elongated connecting member 36 is extended from the opposite side of the knob 35. The connecting member 36 is fitted to the root of the base end opening 161 from the outside. It is connected to the installed ring member 37. When the lid body 3 is removed, the connecting member 36 is deformed as shown by the alternate long and short dash line in FIG. 1 to hold the lid body 3. This can prevent the lid body 3 from dropping or being lost when the lid body 3 is removed from the main body 2.

In the endoscope 10 in which the endoscopic forceps plug 1 is installed, when the treatment tool is used, the treatment tool is inserted from the proximal end opening 331 of the passage 33, and the slit 32 is formed.
And the hole 231 are sequentially passed to be inserted into the treatment instrument insertion channel 16.

With the treatment instrument inserted, the slit 32
Is opened due to the deformation of the opening / closing part 31, and the joint surface 321 of the slit 32 comes into close contact with the outer peripheral surface of the treatment tool. This allows the liquid in the body cavity to flow into the proximal opening 16
It is possible to prevent leakage from 1.

Further, in the present embodiment, the inner peripheral surface of the hole 231 also comes into close contact with the outer peripheral surface of the treatment tool in a state where the treatment tool is inserted. Thereby, it is possible to more reliably prevent the liquid in the body cavity from leaking from the base end opening 161.

When the treatment tool is removed from the forceps plug 1 for the endoscope, the joint surfaces 321 come into close contact with each other due to the elasticity of the opening / closing portion 31 and the like, and the slit 32 returns to the closed state. This allows
It is possible to prevent the liquid in the body cavity from leaking from the proximal end opening 161 even when the treatment tool is not inserted.

Further, in the forceps stopper 1 for the endoscope, the lid 3
When the partition is removed, the partition 23 and the recess 24 are exposed, and the lid 3 can be used in various modes by selecting attachment / detachment. For example, when inserting a treatment tool having a relatively large outer diameter (thickness), it is possible to easily insert it by removing the lid 3.

By the way, the forceps stopper 1 for an endoscope as described above includes
A coating layer 4 having a color different from that of the base material is provided on the surface of the portion to be rubbed against the treatment tool to be inserted / removed, and the coating layer 4 is worn (abraded) by friction with the treatment tool and the base material appears. With, it is possible to indicate (notify) the time of replacement (the time of replacement).

In this embodiment, the coating layer 4 has the base end opening 3
It is formed continuously from the vicinity of 31 to the portion including the inner peripheral surface of the passage 33, the base end surface of the opening / closing portion 31, and the joint surface 321 of the slit 32. The coating layer 4 is also formed on the inner peripheral surface of the hole 231.

The color of the coating layer 4 is different from that of its base, that is, the main body 2 and the lid 3. Therefore, the coating layer 4
When the coating layer 4 is abraded due to friction with the treatment tool at the portion where is provided, the underlying layer appears and the color changes. As a result, it is possible to easily know that the wear has progressed, and it can be shown that the forceps plug 1 for the endoscope needs to be replaced with a new one. Therefore, it is possible to prevent forgetting to replace the worn one, and it is possible to prevent the trouble such as the leakage of the liquid or the like in the body cavity from the slit 32 having the poor adhesion.

The replacement with a new one may be carried out at the same time for the main body 2 and the lid body 3, or may be carried out separately. For example, the lid 3 (near the base end opening 331, the inner peripheral surface of the passage 33, the opening / closing portion 3)
When the coating layer 4 formed on the base end surface of No. 1 and the joint surface 321 of the slit 32 is worn, only the lid body 3 is replaced, and the main body 2 (inner peripheral surface of the hole 231) is formed. If the covering layer 4 becomes worn, only the body 2 can be replaced. As a result, it is possible to perform replacement without waste.

The thickness of the coating layer 4 is not particularly limited,
The thickness is preferably such that it needs to be replaced when worn, and specifically, it is preferably about 0.01 to 1 mm.

The constituent material of the coating layer 4 is not particularly limited, but in addition to the various elastic materials mentioned as the constituent materials of the main body 2 and the lid 3, for example, fluorine-based, epoxy-based, silicone-based, polyamide-based materials. Various synthetic resin materials such as acrylic resin, polyurethane resin, and polyimide resin can be used.

Although the coating layer 4 is provided on almost the entire surface of the portion to be rubbed with the treatment tool in the illustrated configuration, it may be provided on at least a part of the portion to be rubbed with the treatment tool in the present invention. On the contrary, the coating layer 4 may be provided on the entire outer surfaces of the main body 2 and the lid body 3.

The forceps plug for an endoscope of the present invention is not limited to the one divided into the main body and the lid, and the portions corresponding to both are integrally formed (in one member). It may be something like this.

<Second Embodiment> FIG. 3 is a longitudinal sectional view showing a second embodiment of the forceps plug for an endoscope of the present invention. Less than,
The second embodiment of the forceps plug for an endoscope of the present invention will be described with reference to this figure, but the description will focus on the differences from the above-described embodiment, and the description of the same items will be omitted.

The forceps plug for an endoscope 1'of this embodiment is the same as that of the first embodiment except that the structure of the covering layer is different.

In the forceps plug for an endoscope 1'of the present embodiment, two coating layers 41 and 42 having different colors are provided. That is, the surface of the same portion of the main body 2 and the lid 3 as in the first embodiment is coated with the coating layer 41, and the coating layer 41 is further coated with the coating layer 42.

The color of the coating layer 41 is different from that of its base, that is, the main body 2 and the lid 3. Further, the color of the coating layer 42 is different from the color of the base, that is, the coating layer 41. With such a configuration, when the coating layer 42 is first worn, the color changes due to the appearance of the coating layer 41, and then when the coating layer 41 is worn, the main body 2 or the lid 3 appears, and thus the color further changes.

As described above, in the present embodiment, it is possible to know the degree of progress of wear due to friction with the treatment tool in a plurality of stages (two stages), and therefore, the guideline of the replacement time can be more finely (stepwise). I can inform you. For example, the first color change may notify that the replacement time is approaching, and the next color change may notify that the replacement is necessary.

In the present invention, three or more coating layers having different colors may be provided.

The endoscopic forceps plug of the present invention has been described above with reference to the illustrated embodiment, but the present invention is not limited to this, and each part constituting the endoscopic forceps plug is the same. It can be replaced with an arbitrary structure capable of exerting the function of.

[0064]

As described above, according to the present invention, when the wear progresses due to friction with the treatment tool, the color of the worn part changes, so that the guideline of the replacement time can be easily informed. . Therefore, it is possible to prevent forgetting to replace the battery, and it is possible to prevent troubles such as leakage of the liquid or the like in the body cavity from the slit having poor adhesion.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a first embodiment of a forceps plug for an endoscope of the present invention.

FIG. 2 is a plan view showing an endoscope in which the forceps plug for the endoscope shown in FIG. 1 is installed.

FIG. 3 is a vertical cross-sectional view showing a second embodiment of the forceps plug for an endoscope of the present invention.

[Explanation of symbols]

1,1 'Endoscope forceps plug 2 body 21 Fitting part 22 Flange 23 Partition 231 holes 24 recess 3 lid 31 Opening / Closing part 32 slits 321 Bonding surface 33 passage 331 Base end opening 34 Engagement part 35 knob 36 Connection member 37 Ring member 4, 41, 42 coating layer 10 endoscope 11 Flexible tube 12 Operation part 121 Projection 13 curved part 14 Light source insertion part 15 Flexible tube 16 Treatment tool insertion channel 161 Base end opening 162 Tip opening 163 flange

Claims (10)

[Claims] 1. A treatment tool insertion channel of an endoscope, which is detachably installed in a proximal end opening portion of the treatment tool insertion channel, is mainly made of an elastic material, and includes an opening / closing portion having a slit formed therein. A forceps plug for an endoscope, in which the slit is opened / closed by deforming the opening / closing part as it is inserted / removed, and the base of the forceps plug is rubbed against the treatment tool to be inserted / removed. An endoscope characterized in that at least one coating layer having a different color is provided, and the coating layer is abraded by friction with a treatment tool and the underlying layer appears, thereby indicating a standard of replacement time. Forceps stopper. 2. The forceps plug for an endoscope according to claim 1, wherein the coating layer is provided at a portion including at least a part of a joint surface of the slit. 3. The forceps plug for an endoscope according to claim 1, wherein the coating layer is provided on a portion including at least a part of a base end surface of the opening / closing portion. 4. The forceps plug for an endoscope according to claim 1, further comprising a passage through which a treatment tool is inserted, on a proximal end side of the opening / closing portion. 5. The forceps plug for an endoscope according to claim 4, wherein the coating layer is provided at a portion including at least a part of an inner peripheral surface of the passage. 6. The forceps plug for an endoscope according to claim 4, wherein the coating layer is provided at a portion including a vicinity of a proximal end opening of the passage. 7. A main body detachably installed in a proximal end opening of the treatment instrument insertion channel, and a lid body detachably installed in the main body, wherein the opening / closing portion is provided in the lid body. The forceps plug for an endoscope according to any one of claims 1 to 6, which is formed. 8. The forceps plug for an endoscope according to claim 7, wherein the main body is provided with a partition wall portion having a hole through which a treatment tool is inserted. 9. The forceps plug for an endoscope according to claim 8, wherein the coating layer is provided on a portion including at least a part of an inner peripheral surface of the hole. 10. The forceps plug for an endoscope according to claim 1, wherein a plurality of coating layers having different colors are provided.