JPS5846802Y2 - Endoscope tube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope, and particularly to a mantle tube used for guiding the insertion portion of the endoscope into a body cavity, particularly the large intestine.

When inserting the body cavity insertion part of the endoscope into the large intestine, the rectum can be inserted straight without any problems, but if you push it further, you may have to bend the tip of the endoscope.
It can be advanced to the descending colon while correcting it by placing the hand on the abdominal wall.

To insert more, use a method called the reverse ``inverted'' character.

In this method, the endoscope is rotated approximately 180 degrees together with the body cavity insertion section, and by this method, the endoscope can be inserted up to the left colon.

At this point, if you return the above rotation to the original position, it will remain straight.

With this method, the body cavity insertion part of the endoscope can be inserted to the entrance of the transverse colon, but in order to insert it deeper, as shown in FIG. It is necessary to insert a substantially straight mantle tube 2 with appropriate flexibility.

This allows the endoscope to be inserted into the body cavity deep into the transverse colon.

In this way, when inserting the body cavity insertion part of the endoscope deep into the body cavity, particularly the large intestine, it is necessary to fit the mantle tube to the outside of the body cavity insertion part of the endoscope in advance.

At the initial stage of insertion, the mantle tube is positioned as close as possible to the hand control section of the endoscope, and only the endoscope is inserted into the large intestine.

Furthermore, in order to push the endoscope through the many bends in the intestine, the tip of the endoscope must be bent, the entire endoscope must be rotated circumferentially, and then returned to its original position. Requires fairly complex operations.

In the conventional method, the mantle tube remains inserted into the body cavity insertion part of the endoscope throughout the above-mentioned complicated operations, a condition that is not desirable for delicate and complicated operations. It becomes.

This invention provides a new mantle tube that solves the drawbacks of the conventional methods as described above.Hereinafter, the endoscope mantle tube according to this invention will be described in detail based on the embodiment shown in the attached drawings. explain.

In FIG. 2, reference numeral 10 indicates the body cavity insertion section of a well-known endoscope, and on the outer periphery of the body cavity insertion section 10 of this endoscope, there is an eye 21 which is the main part of the present invention. , divided cylinder body 22
and 23 are attached.

The eye body 21 is an annular base member made of metal or plastic having a diameter larger than the outer diameter of the endoscope 10, and as shown in FIG. A concave engagement groove 22a formed on the end surface of
, 23a, on one end surface thereof.

The eye body 21 may be divided in the axial direction and joined together to form an annular shape, and the material may be made of elastic rubber.

The divided cylindrical bodies 22 and 23 are made of a synthetic resin material having a semicircular cross section as shown in FIG. 3 (if necessary, a core material such as metal flex may be included inside).

), and a concave engagement groove 22b and a convex engagement side 22 are provided on the longitudinally extending end of one of the divided cylinders 22.
A convex engaging portion 23 b and a concave engaging groove 23 C are provided at the same cylindrical location of the other divided cylindrical body 23 .

To explain the use of the mantle tube 20 configured as described above, the eye body 21 is first inserted into the body cavity insertion section 1 of the endoscope.
0, move it toward your hand, and insert the tip of the endoluminal insertion section 10 of the endoscope into the body.

When the endoscope has been inserted to a certain extent and a mantle tube is needed to guide the body cavity insertion section 10 of the endoscope, the eye body 21 is positioned in the distal direction, and a convex shape is formed on the end surface of the eye body 21. A concave engaging groove 22 that engages the engaging portion 21 a with the concave engaging grooves 22 a and 23 a formed on the end faces of the divided cylindrical bodies 22 and 23 and forms a space between the divided cylindrical bodies 22 and 23, respectively. b and 23 C are engaged with the convex engaging portions 23 b and 22 C, respectively, and the outer tube 20
It is sufficient to form

FIG. 4 shows another embodiment of the present invention, and the mantle tube 30 shown in this embodiment is made of a plate-shaped synthetic resin material that is formed into a cylindrical body by aligning both end sides along the longitudinal direction. When forming the cylindrical body, it is sufficient to carve the convex engaging portions 31 formed on one side of both ends into the concave engaging grooves 32 formed on the other side.

The mantle tube 30 of this embodiment can also be easily added if necessary during the insertion operation of the body cavity insertion section 10 of the endoscope, as in the previous embodiment.

FIG. 5 shows another embodiment according to the present invention, and the mantle tube 40 shown in this embodiment is composed of divided cylinders 41 and 42, and the longitudinal end faces of these divided cylinders 41 and 42 are Concave engagement grooves 41 a , 41 b , 42 a and 42 b are formed.

In the same figure, reference numerals 51 and 52 indicate connecting members that connect the divided cylinders 41 and 42, and these connecting members 51 and 52 are thin strip-shaped members, and the concave retainers are provided on both sides of the divided cylinders. Matching grooves 41 a, 41 b, 42
A convex engagement groove 51a that engages with each of a and 42b
, 51 b , 52 a and 52 b are provided.

Therefore, the mantle tube 40 in this embodiment can be obtained by connecting the divided cylindrical bodies 41 and 42 with connecting members 51 and 52 when the mantle tube 40 is required, as shown in FIG.

As is clear from the above explanation, according to the outer tube for an endoscope according to the present invention, it is not necessary to fit the outer tube having a predetermined length into the endoscope from the beginning. Not only does it have the advantage of being able to be used by attaching it additionally from the endoscope, but the length of the outer mantle can also be changed as appropriate, and once the endoscope has been inserted, the inner mantle can be removed by releasing the engagement and pulling out the mantle. It can also be removed from the scope.

Furthermore, by attaching the annular abutment to the distal end of the mantle, it is possible to prevent the distal end of the mantle from being pushed open when the body cavity insertion portion of the endoscope is controlled to curve.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional outer tube for an endoscope, FIG. 2 is an explanatory diagram showing an embodiment of the outer tube for an endoscope according to the present invention, and FIG. 3 is a sectional view of the main part thereof. , FIG. 4 is a sectional view of another embodiment having the same parts as in FIG. 3, FIG. 5 is a sectional view of another embodiment having the same parts as in FIG. FIG. 3 is a side sectional view of the main part of the illustrated embodiment. 1.10... Intrabody cavity insertion part of endoscope, 2,20
, 30° 40... Mantle tube, 22.23, 41.
42...Divided cylinder body, 21...Eye body, 5
1.52...Connection member.

Claims (1)

[Scope of utility model registration request] A cylindrical mantle tube used for guiding the insertion of an endoscope into a body cavity, the mantle tube having at least one contact portion along the longitudinal direction, What is claimed is: 1. A mantle tube for an endoscope, which is removable from the side of the tube, and has a distal end portion provided with an attachment portion for detachably attaching an annular eye body.