JPH0629502U - Obstruction plug for endoscope - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] A forceps plug for an endoscope that can increase the tightening force of the treatment tool with a forceps plug as needed to maintain sufficient watertightness even during forced liquid delivery. Offer. A main body member (10) having an inner hole communicating with an insertion opening (6) of a treatment instrument insertion channel and a cap member having an insertion hole (13) for inserting a treatment instrument (14) are provided. At least one of the members is made of an elastic material, and the outer periphery of the insertion-side tip end of the tubular portion inserted into the inner hole of the main body member is made into a tapered taper portion 26, and is fitted to the projection portion 21. The flange portion 25 of the member and the first and second annular grooves 17 and 18 selectively fitted to the main body member are provided, and the taper portion of the tubular portion is inserted into the protrusion of the main body member and tightened. And a free state of withdrawing from the protrusion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an endoscope obstruction plug that is detachably attached to an insertion opening of a treatment instrument insertion channel of an endoscope.

[0002]

[Prior art]

 Generally, when performing medical examinations using an endoscope, various methods such as injecting a drug solution into the patient's body through the endoscope, excising a lesion site, or collecting a living body are required. Is treated. This type of endoscope is provided with a so-called forceps channel for inserting those treatment tools. Since the forceps channel communicates the inside of the body cavity with the outside of the living body during the treatment operation, filth and air in the body cavity may leak to the outside through the forceps channel due to changes in pressure inside the body cavity.

Therefore, by providing a so-called forceps plug for closing the mouthpiece of the forceps port that communicates with the forceps channel and maintaining the mouth portion in a closed state, dirt and air are prevented from leaking out through the forceps channel. To prevent.

Usually, the forceps plug is made of an elastic material such as rubber, and a normally closed slit for inserting a treatment tool is formed in a closed wall portion of the forceps plug. The slit is normally closed in an airtight state, and can be elastically opened by pressing the treatment tool against and pushing the treatment tool into the forceps channel in an airtight manner.

However, in the case of such a slit structure, when the treatment tool is inserted, there is a possibility that an object may leak out to some extent from the slit end opened by the treatment tool. Therefore, in Japanese Utility Model Laid-Open No. 61-54801, in addition to the elastic member having the slit, an elastic member having a hole having a small diameter is combined, and the airtightness is maintained by combining the both. We provide forceps plugs.

[0006]

[Problems to be solved by the device]

 By the way, an adapter for air supply, water supply, or suction may be attached to the forceps port of the endoscope as needed, and in this case, it was proposed in the above-mentioned Japanese Utility Model Publication No. 61-54801. The forceps plug will be attached to the outer end of the adapter. Even in such a case, in the normal liquid feeding by the drip set, since the liquid feeding pressure is not so high, the watertightness can be maintained by the forceps plug.

However, in order to secure a visual field, particularly when physiological saline is forcibly delivered with a syringe or the like in order to remove turbidity due to bile in the bile duct, the water pressure at that time is considerably high. , Cause liquid leakage.

The present invention has been made in view of the above-mentioned problems, and its purpose is to increase the tightening force of the treatment tool with a forceps plug as necessary so that the force can be sufficiently supplied even when forcedly delivering a liquid with a syringe or the like. Another object of the present invention is to provide a forceps plug for an endoscope that can keep the watertightness.

[0009]

[Means for Solving the Problems]

 The present invention relates to an obstruction plug for an endoscope which is detachably attached to an insertion opening of a treatment instrument insertion channel of an endoscope, and is removable from the insertion opening and is attached to the insertion opening. From an elastic material having a main body member having an inner hole communicating with the main body member and a tubular portion which is detachable from the main body member and which is inserted into the inner hole and which has an insertion hole for inserting a treatment instrument. And a taper portion on the outer periphery of the insertion-side tip end portion of the tubular portion that is inserted into the inner hole of the main body member, and the cap is provided in the inner hole of the main body member. An annular projection that fits with the taper of the main part is provided, and the flange is provided on one of the cap member and the main body and is axially juxtaposed to the other and selectively fits with the flange. First and second annular grooves are provided, and the flange portion is The taper portion of the tubular portion of the cap member is inserted into the annular protrusion and tightened by selectively fitting into either the annular groove or the second annular groove. The state in which the inner diameter of the insertion hole is reduced and the state in which the tubular portion is retracted from the protrusion are selected. For this reason, the amount of tightening force of the treatment tool with the forceps plug can be increased as necessary, and the watertightness can be sufficiently maintained even when the liquid is forcibly delivered by a syringe or the like.

[0010]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the entire endoscope, which is provided with an operating portion 1 to which an inserting portion 2 and a universal code (not shown) are connected. The tip of the universal code is also connected to a light source device (not shown). On the other hand, a curved portion (not shown) is formed at the tip of the insertion portion 2, and this curved portion can be remotely bent by an angle knob 4 described later. The operation section 1 is provided with an eyepiece section 3, an angle knob 4, a suction control device 5, and a treatment instrument insertion port body 6. The treatment instrument insertion port body 6 communicates with an insertion channel (not shown) of the endoscope. The insertion channel passes through the inside of the insertion portion 2 and leads to an opening formed at the tip of the insertion portion 2.

An adapter 7 for air supply, water supply, and suction is detachably attached to the treatment instrument insertion port body 6. This adapter-7 has a treatment instrument insertion passage 8 which communicates with a treatment instrument insertion channel of an endoscope, and the outer end of this adapter-7 closes the entrance of the treatment instrument insertion passage 8. The forceps plug (obstruction plug) 9 is detachably attached.

The forceps plug 9 attached to the adapter 7 is configured as shown in FIG. That is, it is provided with a thick main body member 10 formed of an elastic member in a generally cylindrical shape, and a thin cap member 11 formed of an elastic member in a generally cylindrical shape with a bottom, both of which are provided. The belt-shaped connecting portions 12 are integrally connected. And, these are integrally formed by molding. However, the body member 10 and the cap member 11 may be separately configured.

The body member 10 has an inner hole 10 a communicating with the treatment instrument insertion passage 8 of the adapter 7, and a recess 15 formed of an annular groove is provided on the inner surface of the lower end portion. Then, by utilizing this concave portion 15, the forceps plug 9 is detachably attached by being fitted to the mouthpiece flange 16 formed on the outer end (upper end) edge outer periphery of the adapter for air supply, water supply, and suction. It is supposed to be attached. A first annular groove 17 and a second annular groove 18 for fitting the cap member 11 are formed on the inner surface of the upper end of the inner hole 10a of the main body member 10, as will be described later. The first annular groove 17 and the second annular groove 18 are provided in parallel with each other vertically offset from each other in the axial direction of the main body member 10. Further, on the inner surface of the intermediate portion of the inner hole 10a of the main body member 10, there is provided an annular projecting portion 21 forming an inner diameter smaller than the maximum outer diameter of the taper tubular portion 20 of the cap member 11 described later. There is.

On the other hand, the inner diameter of the insertion hole 13 of the cap member 11 is larger than the outer diameter of the treatment tool 14 inserted therein, and the upper end closing wall portion is formed as an elastic partition film 22. In the center of the partition film 22, a slit 23 for inserting the treatment tool 14 such as forceps is formed. Normally, the slit 23 is closed by the elastic force of the partition film 22.

Further, the cap member 11 is provided with a flange portion 25 which is an annular convex portion on the outer peripheral surface thereof. The flange portion 25 is adapted to selectively and selectively fit and engage with the first annular groove 17 or the second annular groove 18 of the main body member 10. The outer peripheral surface of the lower portion of the cap member 11 is formed as a tapered taper portion 26. Then, when the flange portion 25 is fitted in the second annular groove 18, the peripheral surface of the taper portion 26 is inserted into the inside of the protrusion 21 and is maintained in the inserted state. It is like this. A tongue piece 27 is integrally formed on the cap member 11.

2 and 3 show a state in which the flange portion 25 of the cap member 11 is fitted in the first annular groove 17 of the main body member 10, and in this state, The insertion hole 13 is in a natural state and has the largest inner diameter. Therefore, the amount of insertion force of the treatment instrument 14 in this state is light, and the airtightness in this case is also maintained as it is by the slit 23 of the partition film 22. This is sufficient for normal use.

On the other hand, in the case of forced liquid transfer with a syringe or the like, as shown in FIG. 4, the cap member 11 is pushed in and the flange 25 thereof is fitted into the second annular groove 18 of the main body member 10. Position. In this state, the taper portion 26 of the cap member 11 enters the inside of the protrusion 21 and is inserted, and is tightened by the protrusion 21, so that the insertion hole 13 of the cap member 11 becomes smaller than the natural state. In this state, as shown in FIG. 4, the insertion hole 13 of the cap member 11 sufficiently tightens the treatment tool 14.

In the case of forced liquid transfer using a syringe or the like, however, by fitting the flange portion 25 into the second annular groove 18, the tightening of the treatment tool 14 can be strengthened and liquid leakage can be prevented. .

5 to 6 show a modified example. In the above-described first embodiment, the flange portion 25 is provided on the outer surface on the cap member 11 side, and the annular grooves 17, 18 with which the flange portion 25 engages are provided on the inner surface on the main body member 10 side. Then, conversely, the first annular groove 24a and the second annular groove 24b are provided on the outer surface of the cap member 11, and the annular flange portion 25 engaging with these annular grooves 24a, 24b is provided on the inner surface of the main body member 10. Provided.

Therefore, according to this configuration, depending on whether the flange portion 25 of the main body member 10 is fitted in the first annular groove 23 or the second annular groove 24b, The insertion position of the cap member 11 is changed, and the taper portion 26 of the cap member 11 is tightened or released. The operation at this time is the same as that described above. Further, since the annular grooves 24a and 24b are formed on the side of the cap member 11, the thickness of that portion becomes thin, and when changing the annular grooves 24a and 24b into which the flange portion 25 for fitting is changed, it is easy to deform inward. It will be easier to move. The present invention is not limited to the above embodiment, and various modifications can be made without changing the gist of the invention.

[0021]

[Effect of device]

 As described above, in the present invention, by operating the cap member as necessary, it is possible to select a large amount of tightening force for the treatment tool with the obstruction plug, and forcible liquid delivery was performed with a syringe or the like. Even when pressure is applied, liquid tightness can be maintained.

[Brief description of drawings]

FIG. 1 is an elevation view of an endoscope according to an embodiment of the present invention.

FIG. 2 is a sectional view of a forceps plug of an endoscope according to an embodiment of the present invention.

FIG. 3 is a sectional view of the use state of the forceps plug of the endoscope according to the embodiment of the present invention.

FIG. 4 is a cross-sectional view of another use state of the forceps plug of the endoscope according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view of a use state of a forceps plug of an endoscope according to a modified example of the present invention.

FIG. 6 is a cross-sectional view of another usage state of the forceps plug of the endoscope according to the modified example of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Operation part, 2 ... Insertion part, 6 ... Treatment tool insertion mouth body, 7 ... Adapter, 9 ... Forceps plug, 10 ... Main body member, 11 ... Cap member, 13 ... Insertion hole, 14 ... Treatment tool, 16 ... Flange, 17 ... First annular groove, 18 ... Second annular groove, 20 ...
Cylindrical part, 21 ... Projection part, 22 ... Partition film, 23 ... Slit, 25 ... Flange part, 26 ... Taper part.

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[Procedure amendment]

[Submission date] November 27, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 4

[Correction method] Change

[Correction content]

[Figure 4]

Claims (1)

[Scope of utility model registration request] 1. A closure plug for an endoscope which is detachably attached to an insertion opening of a treatment instrument insertion channel of an endoscope, wherein the closure is removable from the insertion opening and communicates with the insertion opening. A cap made of an elastic material having a main body member having an inner hole and a tubular portion which is detachable from the main body member and which is inserted into the inner hole and has an insertion hole for inserting a treatment instrument. And a taper portion on the outer circumference of the insertion-side tip portion of the tubular portion to be inserted into the inner hole of the main body member, and the taper portion of the cap portion is provided in the inner hole of the main body member. An annular protrusion that fits with the pad portion is provided, and a flange portion provided on one of the cap member and the main body member is axially juxtaposed to the other, and the first and second members are selectively fitted with the flange portion. The annular groove of the first flange By selectively fitting into any of the second annular grooves, the taper portion of the tubular portion of the cap member is inserted into the annular protrusion and tightened to reduce the inner diameter of the insertion hole. The obstruction plug for an endoscope, wherein a state in which the tubular portion is opened and a state in which the tubular portion is retracted from the protrusion are selected.