JPH0642645Y2 - Endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an endoscope, and in particular, in a so-called parent-child type endoscope, a parent endoscope through which a child endoscope (hereinafter referred to as “baby scope”) is inserted. The present invention relates to improvement of an insertion opening portion of a guide channel of an endoscope (hereinafter referred to as “mother scope”).

[Prior Art] FIG. 5 shows an insertion port portion of a guide channel 53 of a conventional endoscope (mother scope). In the figure, 51 is an operation unit. Reference numeral 52 is an insertion mouthpiece that is connected to the mouth of the guide channel 53 and projects outward to open. Reference numeral 54 is a rubber forceps plug detachably attached to the mouth of the insertion mouthpiece 52. This forceps plug 54 is generally widely used, and a −-shaped or + -shaped slit is bored in the central portion. 20
Reference numeral 0 is an insertion tube of the baby scope, which is pushed through the slit portion 54a of the forceps plug 54 and inserted into the guide channel 53.

[Problems to be Solved by the Invention] A forceps plug is generally provided for inserting forceps or other treatment tools. Therefore, it is made on the assumption that forceps or the like is inserted only for a very short time during which a tissue piece is collected during a clinical examination time. However, in the parent-child endoscopy, the baby scope remains inserted through the forceps plug for a long time during which observation is performed with the baby scope. Also, unlike the operation of a forceps or the like, the operation of the baby scope is such that insertion, removal, rotation, twisting, and other complicated operations are continuously repeated.

Therefore, as shown by the alternate long and short dash line in FIG. 5, the baby scope 200 forceps may be bent at a small radius of curvature to cause buckling, and may be damaged and unusable.

Also, during the examination, the slits of the forceps plug became "stupid" and the plug function was lost, so that a situation where a dirty liquid or the like was ejected from inside the body cavity was unclean.

The present invention solves the conventional drawbacks described above, reduces the risk of damaging the baby scope, and provides an endoscope capable of reliably sealing the insertion opening in which the baby scope is inserted. To aim.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the endoscope of the present invention has one end opened to the distal end of the insertion portion and the other endoscope insertably and detachably inserted from the other end side. And a tubular body made of a highly elastic non-metallic material, which is attached in a watertight manner so that the tube axis is aligned with the mouth of the other end of the guide channel.

In addition, one end is opened at the tip of the insertion portion and the other end side of the guide channel is removably inserted, and the pipe axis is aligned with the mouth of the other end side of the guide channel to make it watertight. In order to provide a watertight seal between the attached tubular body made of a non-metallic material having high elasticity and another endoscope inserted inside the tubular body, It is characterized in that it has an inner diameter slightly smaller than the outer diameter and a sealing means composed of a through hole formed in the inner surface of the cylindrical body.

[Operation] When another endoscope (baby scope) is inserted into the guide channel from the tubular body made of a highly elastic material,
The tubular body and the baby scope are sealed by a sealing means. Further, since the sealing means is formed by the through hole having an inner diameter slightly smaller than the outer diameter of the inserted baby scope, the baby scope is inserted by opening the through hole uniformly on the whole. ing. Therefore, a reliable sealing property is maintained at that portion.

Also, when the baby scope is twisted greatly,
The tubular body gradually bends to prevent the baby scope from sharply bending.

[Example] An example will be described with reference to the drawings.

FIG. 2 shows a state in which another endoscope (baby scope) 100 is inserted into the guide channel 2 of the endoscope (mother scope) 1 of the present invention. In the figure, 3 is an operation unit of the mother scope 1. Reference numeral 4 is a flexible tube forming an insertion portion. 5 is
A bending portion that is formed on the tip end side and can be remotely bent by the operation knob 6 provided on the operation portion 3. 7
Is a main body of a tip portion in which an objective optical system and the like are incorporated, and the tip portion of the guide channel 2 is formed with an opening in the observation direction. Reference numeral 8 is a raising base that is provided in the tip body 7 for controlling the direction of the baby scope 100 and that is remotely rocked by an operation lever 9 provided in the operation unit 3. 10 is an eyepiece.

On the other hand, 101 is an operation part of the baby scope 100, and 102 is a flexible tube forming an insertion part. 103 is formed on the tip side,
A bending section that can be remotely bent by an operation knob 104 provided in the operation section 101. 105 is the main body of the tip part that has the built-in objective optical system. 107 is an eyepiece.

FIG. 1 shows a base-side insertion opening portion of the guide channel 2 of the mother scope 1, which is provided at a lower portion of the operation portion 3 so as to project obliquely upward.

In the figure, reference numeral 21 denotes an insertion mouthpiece which is connected to the guide channel 2 and is fixed to the operation portion 3 by a press nut 22. The base of this insertion mouthpiece 21 is formed in a so-called lower lock type shape, and the insertion mouth is formed in the same tapered shape as the base portion of the injection needle. And the insertion base 21
A circumferential groove 21b is formed on the outer surface of the device between the ring-shaped protrusion 21a and the end surface of the operating portion 3 in the middle. Then, the tubular body 23 made of a non-metallic material such as a rubber material having a high elasticity is attached and detached so that the pipe axis is aligned with the insertion mouthpiece 21 (therefore, the pipe axis is aligned with the guide channel 2). It is freely connected.

As shown in FIG. 1, the tubular body 23 is formed in a shape along the uneven portion of the insertion mouthpiece 21 at its lower portion, and is formed so as to tighten the insertion mouthpiece 21 there.
Therefore, the space between the cylindrical body 23 and the insertion mouthpiece 21 is watertightly sealed.

The cylindrical body 23 is formed in a tapered shape in which the wall thickness gradually decreases from the mounting portion side to the tip side. However, the mouth 23a is formed in the shape of a taper open, which makes it easy to insert the baby scope 100. In addition, through holes 25 having an inner diameter slightly smaller than the outer diameter of the baby scope 100 are formed in, for example, two places on the inner surface of the tubular body 23 in order to seal the space with the baby scope 100. Therefore, at the portion of the through hole 25, the baby scope 100 is in a tightened state, and the inside and outside of the guide channel 2 are completely sealed here. However, when inserting and removing the Baby Scope 100, the Baby Scope 100
Can be easily moved back and forth in the pipe axis direction (direction of arrow C) while being rubbed at the through hole 25 portion.

Further, when the baby scope 100 is largely twisted according to the necessity of the operation, the tubular body 23 is smoothly and gradually bent in that direction as shown in FIG. 3, for example. Therefore, it is possible to prevent the baby scope 100 from being bent with a small radius of curvature.

FIG. 4 shows a second embodiment of the present invention, in which a tapered insertion mouthpiece 32 that fits tightly into the insertion mouthpiece 21 is provided.
The female screw cap 34 of the lower lock is integrally attached to the tubular body 33. Therefore, the attachment to the insertion mouth ring 21 is mechanically ensured, and the sealing effect by the tapered surface is also ensured.

[Advantage of Invention] According to the endoscope of the present invention, even if another endoscope (baby scope) inserted in the guide channel is greatly twisted, the tubular body gradually bends and the baby scope sharply changes. Since it cannot be bent, the risk of breakage can be greatly reduced.

In addition, since the sealing means is formed by the through hole having an inner diameter slightly smaller than the outer diameter of the baby scope to seal the baby scope insertion opening, the sealing property is reliable, and the baby scope is inserted for a long time. Even if it is used in a state, it has an excellent effect that it is possible to surely prevent the spouting of filth and the like until the end, and it can be repeatedly used repeatedly.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a first embodiment of the present invention, FIG. 2 is an overall side view of the embodiment, FIG. 3 is a partial side view of a used state, and FIG. 4 is a second embodiment. Partial sectional view, FIG. 5 is a partial sectional view of a conventional endoscope. DESCRIPTION OF SYMBOLS 1 ... Endoscope (mother scope), 2 ... Guide channel, 21 ... Insert mouthpiece, 23 ... Cylindrical body, 25 ... Through hole (sealing means), 100 ... Other endoscopes (baby scope).

Claims (1)

[Scope of utility model registration request] 1. A guide channel in which one end is opened at the tip of the insertion portion and another endoscope is removably inserted from the other end side, and the tube axis is aligned with the mouth of the other end side of the guide channel. In order to make a watertight seal between the tubular body made of a non-metallic material with high elasticity and attached in a watertight manner, and another endoscope inserted inside the tubular body, The inner diameter of the endoscope is slightly smaller than the outer diameter of the endoscope, and the sealing means is formed of a through hole formed on the inner surface of the cylindrical body, and the cylindrical body has the inner diameter excluding the portion of the sealing means. Is formed in a substantially constant diameter that is thicker than the outer diameter of other endoscopes,
An endoscope having an outer diameter that is gradually reduced toward the front side.