JP2003135379A - Two-channel endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-channel endoscope capable of always easily and safely performing endoscopic treatment by setting the positional relation of two treatment implements to the optimum state at every case. SOLUTION: A first treatment implement insertion channel 11 is inserted into flexible insertion parts 1, 2, and 3 to be arranged therein and the first treatment implement protruding port 11a being the outlet opening of the first treatment implement insertion channel 11 is arranged in the vicinity of the leading ends of the flexible insertion parts 1, 2, and 3 and a second treatment implement insertion channel 12 is formed at a flexible cylindrical adaptor 10 freely detachable with respect to the flexible insertion parts 1, 2, and 3 to arrange the second treatment implement protruding port 12a being the outlet opening of the second treatment implement insertion channel 12 in the vicinity of the leading end of the cylindrical adaptor 10. The cylindrical adaptor 10 is turned to the peripheral direction with respect to the flexible insertion parts 1, 2, and 3 to adjust the positional relation of the first and second treatment implement protruding ports 11a and 12a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-channel endoscope provided with a plurality of treatment instrument insertion channels.

[0002]

2. Description of the Related Art Generally, a two-channel endoscope has a structure in which two treatment instrument insertion passages are arranged in an insertion portion, and two treatment instrument projection openings are arranged in a distal end portion main body provided at a distal end of the insertion portion. It has become.

[0003]

FIG. 6 shows an endoscopic treatment by projecting the treatment instruments 101 and 102 from the two treatment instrument protrusion ports 11a and 12a of the conventional two-channel endoscope. It shows the state. Reference numeral 3 is a tip body, and 4 is an observation window.

In such an endoscopic procedure using a two-channel endoscope, it is necessary that the positional relationship between the two treatment tools 101 and 102 is adapted to the type of treatment and the lesion site in the case, If they do not comply, smooth treatment may not be possible.

Therefore, the present invention provides a two-channel endoscope in which the positional relationship between the two treatment tools can be set to an optimum state for each case and endoscopic treatment can always be performed easily and safely. With the goal.

[0006]

In order to achieve the above object, the two-channel endoscope of the present invention has a first treatment instrument insertion channel inserted and arranged in a flexible insertion portion,
The first treatment tool projecting opening, which is the outlet opening of the first treatment tool insertion channel, is arranged near the tip of the insertion section, and the second treatment tool is provided on the flexible tubular adapter that is detachable from the insertion section. The insertion channel is formed, the second treatment tool projecting port, which is the outlet opening of the second treatment tool insertion channel, is arranged near the tip of the tubular adapter, and the tubular adapter is oriented in the circumferential direction with respect to the insertion portion. It is possible to adjust the positional relationship between the first and second treatment tool projecting ports by changing the positions and attaching the same.

The insertion portion has a structure in which a bending portion which is bent by remote control is connected to the tip of the insertion portion flexible tube, and the insertion portion flexible tube is arranged so that the tubular adapter does not interfere with the bending portion. By covering the portion, not only the operation of the bending portion is not hindered, but also the positional relationship between the treatment tools projected from the first and second treatment tool projection ports can be adjusted more greatly. .

[0008]

Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows the overall structure of the two-channel endoscope, and FIG. 1 shows a state in which the tubular adapter 10 that is detachably fitted to the insertion portion flexible tube 1 is removed.

As shown in FIG. 1, at the distal end portion of the flexible insertion portion flexible tube 1, a bending portion which is bent by a remote operation from an operation portion 6 connected to the proximal end of the insertion portion flexible tube 1. Two are provided.

A tip portion main body 3 in which an observation window and the like are arranged is connected to the tip end of the bending portion 2, and the insertion portion flexible tube 1, the bending portion 2, and the tip end portion main body 3 constitute an insertion portion. There is. Reference numeral 7 is an operation knob for performing a bending operation.

A first treatment instrument insertion channel 11 made of, for example, a tetrafluoroethylene resin tube is disposed so as to extend from inside the insertion portion flexible tube 1 to inside the curved portion 2, and the first treatment instrument insertion channel is formed. A first treatment tool projecting opening 11a, which is an outlet opening of 11, is formed in the tip body 3, and a first treatment tool insertion opening 11b is arranged near the lower end of the operating portion 6.

As shown in FIG. 3 showing a III-III cross section, the tubular adapter 10 is made of an elastic material such as silicone rubber in a tubular shape and is elastically pushed to be inserted. A second treatment instrument insertion channel 12 is integrally formed straight in the axial direction along the annular portion 10a covered by the outer peripheral surface of the partial flexible tube 1. The second treatment tool insertion channel 12 may have a configuration in which a slipping tetrafluoroethylene resin tube or the like is inserted.

As shown in FIG. 1, the tubular adapter 10
An insertion mouthpiece 10b is formed at a proximal end portion thereof in a shape covering the vicinity of a connecting portion between the first treatment instrument insertion channel 11 and the operation portion 6, and the second treatment instrument insertion opening 12b is formed in the insertion mouthpiece 10b. Are arranged.

As shown in FIG. 2, the tubular adapter 10
Is formed in a size and shape that covers substantially the entire length of the insertion portion flexible tube 1 and elastically and lightly tightens the insertion portion flexible tube 1. The bending portion 2 is formed so as not to hinder the bending operation of the bending portion 2. Is set to a length that does not interfere with.

The tubular adapter 10 thus configured
Can be attached to the insertion portion flexible tube 1 in any direction in the circumferential direction by rotating the insertion portion flexible tube 1 about the axis as indicated by the arrow A.

FIG. 4 is a perspective view of the flexible tube 1 of the insertion portion and the cylindrical adapter 1
It is a front view of the insertion part in the state where 0 was attached,
The treatment tool projecting port 11a is arranged on the distal end surface of the distal end portion main body 3 along with the observation window 4 and the illumination window 5.

The second treatment tool projecting opening 12a is located in the vicinity of the rear end of the curved portion 2 rearward of the second treatment tool protruding opening 12a. Thereby, the positional relationship of the second treatment tool projecting opening 12a with respect to the first treatment tool projecting opening 11a can be arbitrarily set.

FIG. 5 shows a usage state of the two-channel endoscope of the present embodiment, and the second treatment for the first treatment tool projecting opening 11a is performed according to the type of treatment, lesion site, etc. in that case. By setting the position of the tool protruding port 12a, the first treatment tool 101 protruding from the first treatment tool protruding port 11a and the second treatment tool 102 protruding from the second treatment tool protruding port 12a. The positional relationship with and can be optimized for the treatment operation of the case.

Further, when only one treatment tool needs to be used, it is possible to reduce the pain to the patient by using without using the tubular adapter 10.

[0020]

According to the present invention, the cylindrical adapter having the second treatment instrument insertion channel formed therein can be attached to the insertion portion by changing its direction in the circumferential direction.
Since the positional relationship between the first and second treatment tool projecting ports can be arbitrarily adjusted, the positional relationship between the two treatment tools can be set to an optimum state for each case, and endoscopic treatment can be performed easily and easily. You can do it safely.

[Brief description of drawings]

FIG. 1 is a side view showing the overall configuration of a two-channel endoscope according to an embodiment of the present invention with a tubular adapter removed from an insertion portion.

FIG. 2 is a side view showing the overall configuration of the two-channel endoscope according to the embodiment of the present invention with the tubular adapter attached to the insertion portion.

FIG. 3 is a sectional view taken along line III-III in FIG. 1 of the two-channel endoscope according to the embodiment of the present invention.

FIG. 4 is a front view of the insertion part in which the tubular adapter of the two-channel endoscope according to the embodiment of the present invention is attached to the insertion part.

FIG. 5 is a perspective view showing a usage state of the two-channel endoscope according to the embodiment of the present invention.

FIG. 6 is a perspective view showing a usage state of a conventional two-channel endoscope.

[Explanation of symbols]

1 Flexible tube (insertion section) 2 Curved part (insertion part) 3 Tip body (insertion part) 6 Operation part 10 Cylindrical adapter 10a annular part 11 First treatment instrument insertion channel 11a First treatment tool protruding port 11b First treatment instrument insertion port 12 Second treatment instrument insertion channel 12a Second treatment tool protruding port 12b Second treatment instrument insertion port 101,102 treatment tool

Claims (2)

[Claims] 1. A first treatment instrument insertion channel is inserted and arranged in a flexible insertion portion, and a first treatment instrument projection opening, which is an outlet opening of the first treatment instrument insertion channel, is provided near the tip of the insertion portion. And a second treatment instrument insertion channel is formed in a flexible tubular adapter that is detachable from the insertion portion and is a second treatment that is an outlet opening of the second treatment instrument insertion channel. The first and second treatment tools are configured by disposing a tool projecting opening near the tip of the tubular adapter and by mounting the tubular adapter by turning the tubular adapter in a circumferential direction. A two-channel endoscope characterized in that the positional relationship of the projecting ports can be adjusted. 2. The insertion section has a configuration in which a bending section that is bent by remote control is connected to a distal end of a flexible tube of the insertion section, and the insertion is performed so that the tubular adapter does not interfere with the bending section. The two-channel endoscope according to claim 1, wherein the flexible tube portion is covered.