JPH06304129A - Endoscope - Google Patents

Abstract

PURPOSE:To provide the endoscope in which a suction operating valve and a forceps inserting port part disposed by holding a grip part of an operating part between them are formed so as not to generate a step difference, and also, can be connected easily. CONSTITUTION:Both ends of one piece of suction connecting tube 100 having no step difference on the inside surface is inserted directly into a suction operating valve 7 and a forceps inserting port part 4 so as not to generate a step difference, respectively, and the suction operating valve 7 and the forceps inserting port part 4 are allowed to communicate and connected by the suction connecting tube 100.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope in which a forceps channel is also used as a suction channel.

[0002]

2. Description of the Related Art A suction operation valve for performing a suction operation in an endoscope is arranged above a grip portion of an operation portion.

Further, the forceps insertion port for inserting forceps or the like into the forceps channel was once disposed above the suction operation valve, but in recent years, due to reasons such as operability and hygiene, the grip portion has been recently used. It is located underneath.

In the endoscope having such a structure, when the forceps channel is also used as the suction channel, the suction operation valve and the forceps insertion port portion need to be connected by a suction connection pipe passing through the inside of the grip portion. .

Therefore, conventionally, the suction operation valve and the forceps insertion port are communicatively connected by a suction connection pipe made of a soft tube such as polyethylene. However, when the suction connection pipe is formed of a soft tube, it is difficult to obtain strength of the connection portion and liquid leakage is caused by directly connecting and fixing the end portion to the suction operation valve and the forceps insertion port portion. It is not realistic because it easily occurs.

Therefore, in general, short metal pipes are projected from the suction operation valve and the forceps insertion port, and the metal pipes are inserted into both ends of the tube for connection.

[0007]

However, when the metal pipe is inserted into both ends of the tube in such a manner, the end portion of the metal pipe projects radially into the tube to form a step, which results in cleaning after use of the endoscope. At that time, the stepped portion was insufficiently cleaned, and dirt and the like were likely to remain attached, which was unsanitary.

Therefore, the present invention provides an endoscope in which the suction operation valve and the forceps insertion opening provided with the grip portion of the operating portion interposed therebetween can be easily connected without causing a step. The purpose is to provide.

[0009]

To achieve the above object, in the endoscope of the present invention, a suction operation valve is arranged above the grip portion in the endoscope operation section and communicates with the forceps channel. In the endoscope in which the forceps insertion port is arranged below the grip, the both ends of one suction connection tube having no step on the inner surface are provided with steps on the suction operation valve and the forceps insertion port, respectively. It is characterized in that the suction operation valve and the forceps insertion port portion are connected by being directly inserted so as not to occur and by the suction connection pipe.

It is preferable that the suction connecting pipe is formed of a metal pipe and at least a part of the suction connecting pipe is annealed.

[0011]

Embodiments will be described with reference to the drawings. FIG. 1 shows an endoscope, and a proximal end side of an insertion portion 1 made of a flexible tube is connected to an operation portion 2.

The forceps channel 3 inserted through the entire length of the insertion portion 1 is formed of, for example, a fluororesin tube, and its tip is open at the tip of the insertion portion 1.

A forceps insertion opening 4 for inserting a treatment tool such as an endoscopic biopsy forceps into the forceps channel 3 is provided with an operating portion 2.
On the lower side of the grip portion 2a, the connection portion 5 between the operation portion 2 and the insertion portion 1 is disposed so as to project obliquely upward.

Cylindrical body 4 serving as a central member of the forceps insertion opening 4
1 and the forceps channel 3 are connected by a connecting pipe 42 made of a stainless steel pipe, and a forceps plug 43 is detachably attached to the opening side of the tubular body 41.

A suction operation valve 7 for performing a suction operation is arranged near the upper end position of the operation portion 2 above the grip portion 2a. The suction operation valve 7 is composed of a cylinder 71 fixed in the operation portion 2, a piston 72 and the like which is provided therein so as to be capable of advancing and retracting.

On the side surface of the cylinder 71, a suction pipe 6 made of, for example, a fluororesin, which is connected obliquely rearward, is connected to the suction mouthpiece 10 at a connector 9 at the tip of the flexible connecting pipe 8 connected to the operating portion 2. Has been done.

Between the cylinder body 41 of the forceps insertion port 4 and the cylinder 71 of the suction operation valve 7 configured as described above, there is provided a suction connection pipe 100 formed of, for example, a stainless steel pipe. , Connected with communication.

Therefore, by connecting a suction pump to the suction mouthpiece 10 of the connector 9 and pushing in the piston 72 of the suction operation valve 7, the suction connection pipe 100, the cylindrical body 41, the connection pipe 42, the forceps channel 3, etc. Suction is performed from the distal end of the insertion portion 1 via.

The suction connection pipe 100 configured as described above
Has both ends directly inserted into the holes formed in the cylindrical body 41 and the cylinder 71, respectively, and, as shown in FIG. 1, the suction connecting pipe 100 and the cylindrical body 4 connected thereto.
The 1 and the cylinder 71 are assembled on the inner peripheral surface so that there is no step or the like, and are fixed to each other by brazing.

Further, the suction connecting pipe 100 is annealed at the bent portions A and B near both ends so that both end portions can be properly inserted into the holes of the cylindrical body 4 and the cylinder 71. By manually plastically deforming that part, the positions and orientations of both ends can be freely changed.

In the embodiment constructed as described above,
The suction connecting pipe 100 is set to be slightly longer than a predetermined length for a single component, and the bent portions A and B are bent to be plastically deformed, so that the suction operation valve 7 and the forceps insertion port 4 are located at the correct positions. It can be adjusted so that it can be plugged in.

[0022]

According to the endoscope of the present invention, since the suction operation valve and the connection portion between the forceps insertion opening portion and the suction connection pipe can be connected without a step, it is possible to clean after use. It is extremely hygienic because it does not catch dirt.

[Brief description of drawings]

FIG. 1 is an overall schematic view of an endoscope of an embodiment.

[Explanation of symbols]

 4 Forceps insertion port 7 Suction operation valve 100 Suction connection tube

Claims (3)

[Claims] 1. An endoscope in which a suction operation valve is arranged above a grip portion in an endoscope operation portion, and a forceps insertion port portion communicating with a forceps channel is arranged below the grip portion. Both ends of one suction connection pipe having no step are directly inserted into the suction operation valve and the forceps insertion opening so as not to cause a step difference, and the suction connection valve and the forceps are connected by the suction connection pipe. An endoscope characterized by being communicatively connected to an insertion opening. 2. The endoscope according to claim 1, wherein the suction connection pipe is a metal pipe. 3. The endoscope according to claim 2, wherein at least a part of the suction connection tube is annealed.