JPH0370536A - Forced plug for endoscope - Google Patents

Abstract

PURPOSE:To prevent split, abrasion and wear of a slit even when a syringe is forcibly pushed in or repeatedly inserted in by providing a projected part brought into contact with the slit, a recessed face receiving an apex of the syringe and a communicating tube path between the projected part and the recessed face on a movable top on a closing film of a forceps plug. CONSTITUTION:A forceps plug 8 consists of an elastic material and between an upper cylindrical part 10 and a lower cylindrical part 11, a closing film 15 is set. A slit 16 is provided at the center of the film and a movable top 17 are furnished in the upper cylindrical part. On the movable top, a projected part 19 with a smooth apex is provided at a position where the bottom face 18 brought into contact with the closing film is brought into contact with the slit and a recessed face 21 with a shape fittable with an apex of a syringe is provided on the upper part and a tube path 22 communicating with the projected part and the recessed face are also provided. When the syringe is pushed therein, the recessed face receives the apex of the syringe to transmit the pushing force to the movable top, the projected part of which spreads out the slit at a specified extent and the above described communicating tube path is communicated with a channel for treating perforation. Therefore, even if the syringe is repeatedly inserted and taken out or is pushed in by a strong force, there is little possibility that the closing film is split or abraded.

Description

Detailed Description of the Invention [Industrial Field] The present invention relates to an endoscope which maintains airtightness of a treatment instrument insertion opening by being attached to an insertion base of a treatment instrument insertion channel of an endoscope. Regarding forceps plugs.

[Conventional technology]

Generally, in medical examinations and surgeries using endoscopes, 11. Various treatments are performed, such as injecting medical solutions into a patient's body through an endoscope, resecting a lesion, and collecting cells. For this reason, the endoscope is provided with a treatment tool insertion channel through which a treatment tool such as forceps for carrying out these treatments is inserted. On the other hand, when observing the inside of a body cavity using an endoscope, air is supplied into the body cavity to inflate it and make it easier to observe. The pressure inside the body cavity may escape to the atmosphere, and dirt and air within the body cavity may leak out through the treatment instrument insertion channel. For this reason, a forceps stopper is provided in the insertion mouthpiece communicating with the treatment instrument insertion channel, which keeps the insertion opening airtight and prevents dirt and air from leaking.

This forceps plug is made of an elastic material such as rubber, and has a slit (insertion port) for inserting a treatment instrument therethrough.

This sulinod is normally closed in an airtight state, and can be opened by pressing the tip of a treatment tool or the like into the channel, and the treatment tool can be inserted into the channel or a syringe can be communicated with it.

Conventionally, as such forceps plugs, for example,
There is one shown in Japanese Patent No. 1-54801.

In this prior art, as shown in FIG. 1 of the publication, 8! A forceps plug, which is a cover that closes the insertion opening of the mouthpiece, is attached to the insertion cap of the treatment instrument insertion channel provided in the operating section of the mirror, and a forceps plug is attached to the top of the forceps plug. A closure membrane having a slit is provided to allow insertion of a treatment tool in an airtight manner. Furthermore, when no treatment instrument is inserted, the slit is closed to maintain airtightness within the channel.

[Problem to be solved by the invention]

However, in the conventional forceps plug as described above, the treatment instrument is directly passed through the slit cut in the obturator membrane provided in the forceps plug, and when injecting the drug solution, the tip of the syringe must pass through the same slit. It will pass through.

However, unlike flexible treatment instruments, in the case of a syringe, the pushing force is directly transmitted to the tip of the syringe. In addition, because the tip is not smooth enough, the syringe may be inserted at an angle, forced into it, or inserted repeatedly, which can cause the slit to wear out or widen, causing the obturator membrane to become clogged. This had the disadvantage that the airtightness could be lost due to tearing.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide an endoscope forceps plug that is less susceptible to tearing of the slit or wear even when a syringe is forcefully inserted or repeatedly inserted. Our goal is to provide the following.

[Means to solve the problem]

In order to solve the above-mentioned problem 11fl, the present invention provides an endoscope forceps plug made of an elastic material that is detachably attached to an insertion mouthpiece of a treatment instrument insertion channel, and provides a treatment tool provided on the endoscope forceps plug. A slit for inserting the tool, a closing membrane that airtightly closes the slit, a movable arm provided above the closing membrane so as to be movable in the axial direction of the forceps plug, and a closing membrane of the movable arm. A part provided on the contact surface with Im and abuts the slit, a concave face provided at the upper part of the movable arm for receiving the tip of the syringe, and a conduit communicating the protrusion with the concave face. It is something.

[Effect]

Therefore, when the syringe is pushed in, the concave surface of the movable arm receives the tip of the syringe, transmits the pushing force to the movable arm, and the protrusion of the movable guard pushes the slit apart by a certain amount. Therefore, the conduit that communicates the protrusion of the movable arm with the concave surface is communicated with the treatment instrument insertion channel.

〔Example〕

1 to 3 show a first embodiment of the present invention. FIG. 2 is a diagram showing the entire endoscope l. This endoscope 1 consists of an operating section 2 and an insertion section 3, and the operating section 2 is provided with an insertion mouthpiece 5 into which a treatment instrument 4 such as forceps is inserted.

This insertion cap 5 communicates with a treatment instrument insertion channel 6 disposed across the interior of the operating section 2 and the insertion section 3. Then, by inserting the treatment instrument 4 through the insertion cap 5 and into the treatment instrument insertion channel 6, the tip of the treatment instrument 4 is led out from the tip opening of the tip component 7 provided at the tip of the insertion section 3. It is now possible to do so.

Further, a forceps plug 8 for maintaining airtightness with the outside is detachably attached to the insertion cap 5.

The forceps plug main body 9 of the forceps plug 8 is made of an elastic material such as rubber or soft plastic material, and as shown in FIG. are doing. The upper cylindrical part 10 has an opening 12 at the upper end, and the circumference of the opening 12 is surrounded by a jaw part 13 having a shape in which the upper end of the upper cylindrical part 10 is bent toward the inner circumference. There is.

Further, the lower cylindrical portion 11 has a circumferential groove portion 14 that fits into the insertion cap 5 . There is a gap of 11N between the upper cylindrical part 10 and the lower cylindrical part 11! J15 is provided, this closure membrane 15 having a slit 16 in its center.

Further, the forceps plug 8 is formed by a forceps plug main body 9 and a movable member 17 provided in the upper cylindrical portion 10 of the forceps plug main body 9, and the movable Wji 17 is made of the forceps plug made of hard rubber, plastic, metal, etc. It is made of a harder material than the main body 9. The movable arm 17 has a protrusion 19 with a smooth tip at a position where it abuts the slit 16 on the bottom surface 18 that abuts the closure membrane 15 . The upper portion has a concave surface 21 shaped to fit with the tip of the injection B20. Further, a conduit 22 is provided between the protrusion 19 and the recess *21 to communicate with each other. The movable arm 17 is provided inside the upper cylindrical portion 10 so as to be movable in the axial direction of the forceps plug 8.

Next, the operation will be explained based on the above configuration.

To inject the drug solution using the syringe 20, the tip 23 of the syringe is inserted through the opening 12 at the upper end of the forceps plug body 9.

When the syringe tip 23 is inserted into the opening 12, the forceps stopper 8
The movable arm 17 is provided in the upper cylindrical portion 10 of the forceps plug so as to be movable in the axial direction. When the syringe 20 is further pushed in, the movable arm 17 moves downward as shown in FIG. .

Further, when the movable arm 17 is pushed in, the bottom surface 18 that comes into contact with the closure membrane 15 of the movable arm 17 is around the closure 1111115,
That is, it stops at the position where it abuts the bottom part 24 of the upper cylindrical part 10 of the forceps plug 8. At this time, the conduit 2 provided in the movable arm 17
2 and the treatment instrument insertion channel 6 are fitted into the opening of the slit 16 and communicate with each other. Therefore, the drug solution is injected at this position, and after the injection, the injection 'a20 is removed from the forceps plug 8. When removing the syringe 20, since the syringe tip 23 and the concave surface 21 of the movable @17 are fitted, the movable arm 1 is removed together with the syringe 20.
7 moves upwards and the slit 16 closes again. Also,
Since the movable arm 17 abuts the jaw portion 13 at the upper end of the forceps plug body 9 and does not move upwards from that position, the syringe tip 23 that is fitted into the concave surface 21 of the movable @17 is It will be separated from 17.

Therefore, as an advantage of the first embodiment, the slit 16 of the closure membrane 15 and the syringe tip 23 do not come into direct contact with each other. Further, the protrusion 19 of the movable arm 17 having a smooth tip can push open the slit 16, and the protrusion 1
Since the amount of pressing against the closing lA15 of 9 is up to the position where the movable @I7 and the bottom part 24 of the upper cylindrical part 10 of the forceps plug 8 come into contact, the protrusion 19 can be pushed into the slit 1 without limit.
It will not be pushed into 6, so MM11!1
The slit 16 of 5 is worn out or is forced to expand and close 1.
I115 will not be damaged.

4 to 6 show other embodiments of the present invention, the same parts as in the first embodiment are denoted by the same reference numerals, and details are omitted.

FIG. 4 shows a second embodiment of the invention. The endoscope forceps plug according to the second embodiment has a circumferential protrusion 25 on the bottom 24 of the upper cylindrical portion IO of the forceps plug main body 9, as shown in FIG. be. Therefore, injection S
When the syringe 20 is removed after injecting the drug solution using the forceps plug body 9, the movable arm 17 returns to its original position due to the elastic force of the protrusion 25 provided on the forceps plug body 9.

Therefore, according to the configuration of this embodiment, in addition to the effects of the first embodiment, even if the fitting between the syringe tip 23 and the concave surface 21 is uncertain, the movable arm 17 can be closed by removing the syringe 20. Not only the biasing force of the base lA15 but also the protrusion 25
The elastic force ensures that it returns to its original position.

5 and 6 show a third embodiment of the present invention. As shown in FIG. 5, the forceps plug main body 26 in this third embodiment is provided with a closing membrane 28 having a slit 27 at the upper end of the forceps plug main body 26.
A circumferential groove portion 29 is provided on the outer surface of the holder. The movable arm 30 has a hook-shaped protrusion 31 forming a cylindrical portion at its lower part, and is attached to the upper part of the forceps plug body 26 so as to cover it, and the movable arm 30 is attached to the groove 29 of the forceps plug body 26.
engage the protrusion 3I. Furthermore, the movable arm 30 has a groove 29
The forceps plug 8 is movable in the axial direction by a width of . The closure membrane 2 of the forceps plug body 26 is attached to the bottom surface 32 of the movable arm 30.
A protrusion 33 is provided so as to abut on the slit 27 .
I try to push it open.

In this way, in the third embodiment, the first. Unlike the second embodiment, a movable arm is fitted to the upper outer side of the forceps plug body. Here, when the tip 23 of the syringe 20 is inserted into the movable arm 30 in order to inject the drug solution, the movable arm moves along the groove 29 of the forceps plug body 26 until the bottom surface 32 of the movable arm 30 and the closure membrane 28 come into contact. 30 is lowered, the protrusion 33 pushes open the slit 27, communicates with the insertion channel 6, and the drug solution is injected. Further, as the syringe 20 is removed, the movable arm 30 moves upward, and the slit 27 closes again.

Therefore, in addition to the same effect as the first embodiment, the third embodiment can easily remove the movable arm 30 from the forceps plug body 26 because the movable arm 30 is placed over the upper outer side of the forceps plug body 26. . Therefore, both can be easily cleaned.

Incidentally, the endoscope forceps plug of the present invention may be applied to an electronic endoscope as shown in Figure #17.

The electronic endoscope 34 includes an operating section 35. Insertion part 36. Tip part 3
7. It consists of a universal cord 38 and is connected to a video processor 40 via a connector 39, and a T and V monitor 41 is connected to the video processor 40. The operation section 35 includes a curved operation knob 42. Air supply/water supply switching button 43. Suction button 44. A forceps operating lever 45 and a forceps insertion mouthpiece 46 are provided.

The forceps plug 47 shown in the first to third embodiments is attached to this insertion cap 46.

Therefore, the effects of the first to third embodiments can also be obtained in the electronic endoscope.

In the above embodiment, the syringe tip 23 and the concave surface 21 were fitted, but while the protrusion 19 of the movable arm 17 is pushing the sleeve 16 apart, the elastic force of the closure membrane 15 causes the movable arm 17 to fit. is biased upward, so even if the syringe tip 23 does not fit into the concave surface 21 and is loose, when the injection 20 is removed, the movable arm 17 will surely return to its original position without being caught in the slit 16. , sleeve) 16 is closed and the airtight state is maintained again.

〔Effect of the invention〕

As explained above, according to the configuration of the present invention, when injecting a drug solution or the like using a syringe, the forceps stopper M III
The slit can be pushed wide by the protrusion provided on the movable arm without being forced wide by the tip of the syringe.

Further, by contacting the contact surface of the movable arm with the obturator membrane of the forceps plug, the amount of pressure of the part of the movable arm against the obturator membrane can be regulated. Therefore, even if you repeatedly insert and remove the syringe or push it in with strong force, the obturator membrane may tear or
Less likely to wear out.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a first embodiment of the present invention, FIG. 2 is a perspective view of an endoscope, FIG. 3 is a cross-sectional view also showing the first embodiment, and FIG. FIG. 5 is a sectional view of essential parts showing a second embodiment of the invention, FIG. 5 is a sectional view of essential parts showing a third embodiment of the invention, and FIG. 6 is a sectional view of the same third embodiment. , FIG. 7 is a perspective view of the electronic endoscope device. 5 Insertion cap, 6-・Channel for insertion of treatment instrument, 8 Forceps plug, 15.28・- Obstruction membrane, 16, 27 −・−
-... Slit, 17. 3
0 −・−・・ Movable piece, 18, 32−・・
Bottom surface (contact surface) 19, 33...Protrusion, 21----------
−・−・Concave surface, 22 conduit

Claims (1)

[Claims] In an endoscope forceps plug made of an elastic material that is detachably attached to an insertion mouthpiece of a treatment instrument insertion channel, a treatment instrument insertion slit provided in the endoscope forceps plug and the slit are made airtight. an obturator membrane to be occluded; a movable piece provided above the obturator membrane so as to be movable in the axial direction of the forceps plug;
A protrusion provided on the contact surface of the movable piece with the closure membrane and abutting the slit, a concave surface provided on the upper part of the movable piece for receiving the tip of the syringe, and a conduit communicating the protrusion and the concave surface. An endoscope forceps plug characterized by comprising: