JP2004049818A - Structure of connection section of endoscopic conduit and connection method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a connection section of an endoscopic conduit capable of surely cleaning with a cleaning brush and a method for the connection. <P>SOLUTION: The endoscopic conduits to be inserted in an insertion and an operational sections are composed of a hard conduit and a soft conduit fixed in an end periphery of the hard conduit filled with an adhesive agent in an end portion of the above hard conduit, which adhesive reduces a level difference between the above end portion and an interior surface of the soft conduit. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
【Technical field】
The present invention relates to a structure and a connecting method of a connecting portion of an endoscope channel.
[0002]
[Prior art and its problems]
In the endoscope, various conduits are inserted into the insertion section and the operation section. Typically, both ends of the treatment tool insertion channel are open to the operation unit and the insertion unit. Various treatment tools are inserted into the treatment tool insertion channel, and the treatment tool insertion channel is contaminated with body fluids and contaminants in the body cavity. For this reason, after use, it is essential to insert a cleaning brush for cleaning.
[0003]
However, the conduit including the treatment instrument insertion channel is composed of a rigid conduit and a soft conduit attached to the outer periphery of the end of the rigid conduit, and a slight step is formed in the adhered portion. Occurs. In order to remove the dirt entering the step, it was necessary to carefully pass through the cleaning brush many times to clean the step.
[0004]
[Object of the invention]
An object of the present invention is to provide a connection structure and a connection method of an endoscope conduit that can be more reliably cleaned with a cleaning brush based on the above problem awareness.
[0005]
Summary of the Invention
The connecting portion structure of the endoscope conduit according to the present invention includes a conduit inserted into the insertion portion and the operation portion, a rigid conduit body, and a soft tube adhered to an outer periphery of an end of the rigid conduit body. In an endoscope conduit comprising a passage, an end of the hard conduit body is filled with an adhesive for reducing a step between the end and the inner surface of the soft conduit.
[0006]
According to the above configuration, a step between the end portion of the hard conduit and the inner surface of the soft conduit can be satisfactorily eliminated, and brushing and cleaning of the endoscope conduit can be facilitated. It is practical that the hard conduit is made of metal and the soft conduit is a synthetic resin tube.
[0007]
In addition, the method for connecting an endoscope conduit according to the present invention is characterized in that the conduit inserted into the insertion portion and the operation portion is a rigid conduit body and a soft conduit attached to an outer periphery of an end of the rigid conduit body. In an endoscope conduit comprising a conduit, an adhesive is applied to an inner surface of an end portion of the soft conduit, and a hard conduit is inserted into the soft conduit and adhered.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an example of the entire configuration of the endoscope 10. The endoscope 10 is provided at an insertion section 11 to be inserted into a body cavity, an operation section 12 connected to a base side thereof, a universal tube 13 extending from the operation section 12, and a distal end of the universal tube 13. The endoscope has a connector 14 and is detachable from a processor (not shown) separate from the endoscope main body via the connector 14.
[0009]
As shown in FIG. 2, an observation window 15, an illumination window 16, an air / water nozzle 17, and a treatment instrument insertion channel outlet 18 are arranged at the insertion portion distal end 11 a. An objective lens is arranged behind the observation window 15, and an image formed by the objective lens is converted into an electronic image by a CCD and observed on a TV monitor via a processor separate from the endoscope 10. be able to. An illumination lens is arranged in the illumination window 16, and illumination light from a light source in the processor is given to the illumination lens via a light guide. The air / water supply nozzle 17 is a nozzle for cleaning the observation window 15.
[0010]
The connecting portion 19 located between the insertion portion 11 and the operation portion 12 is provided with a treatment tool insertion port projection 20 for inserting (or storing) an entrance communicating with the treatment tool insertion channel outlet 18. As shown in FIG. 3, the treatment tool insertion port projection 20 is a hollow cylindrical portion projecting obliquely outward from the connecting portion 19, and the inside of the hollow has an entrance-side end of the treatment tool insertion channel 21. Department is communicating.
[0011]
The treatment instrument insertion channel 21 includes a hard conduit 22 made of metal and a soft conduit 23 formed of a synthetic resin material such as a fluororesin. The rigid conduit body 22 has an entrance-side end 22a protruding outward from the treatment instrument insertion port projection 20, and two opposing connection ends (first and second connection ends) 22b and 22c. The soft conduit 23 is attached to the outer periphery of the first connection end 22b via a tube stopper 24. The outlet end of the soft conduit 23 communicates with the treatment instrument insertion channel outlet 18, and the treatment instrument inserted from the entrance end 22 a of the hard conduit body 22 extends from the treatment instrument insertion channel outlet 18. Let it. An adhesive (sealing agent) 40 is filled between the first connection end portion 22b and the inner surface of the soft conduit 23 so that no step is generated. And the soft conduit 23 can be connected smoothly. FIG. 4 shows an enlarged view of the connection between the first connection end 22b and the soft conduit 23.
[0012]
On the other hand, a first suction tube 25 for sucking body fluid, dirt, and the like from the treatment instrument insertion channel outlet 18 separately from the treatment instrument insertion channel 21 is provided at the second connection end 22c of the rigid conduit body 22. It is applied via a stop 24. The first suction tube 25 is made of, for example, a synthetic resin material such as a fluororesin, similarly to the soft conduit 23. The adhesive 40 is also filled between the second connection end portion 22c and the inner surface of the first suction tube 25 so that a step does not occur.
[0013]
The operation unit 12 is provided with a suction button 30 for sucking dirt in the body cavity from the treatment instrument insertion channel outlet 18 and a suction cylinder 27 connected to the suction button 30. As shown in FIG. 5, first and second relay rigid pipe bodies 26 and 28 made of metal are fixed to the suction cylinder 27 at the lower end and side faces thereof, respectively. The other end of the first suction tube 25 is attached to the first relay rigid pipe body 26 via the tube stopper 24, and one end of the second suction tube 29 is attached to the second relay hard pipe body 28. It is attached via a tube stopper 24. The second suction tube 29 is inserted from the operation unit 12 into the universal tube 13 and the connector unit 14, and the other end communicates with the suction base 31 protruding from the connector unit 14. As shown in FIG. 6, a third relay hard pipe body 32 made of metal is fixed to a lower end portion of the suction base 31, and the third relay hard pipe body 32 is connected to the second suction tube 29. The end is attached via a tube stop 24.
[0014]
Between the above-described first relay rigid conduit body 26 and the inner surface of the other end of the first suction tube 25, between the second relay rigid conduit body 28 and the inner surface of the one end of the second suction tube 29, and the third The adhesive 40 is also filled between the relay conduit 32 and the inner surface of the other end of the second suction tube 29 so that a step does not occur. In the present embodiment, the soft conduit 23, the first suction tube 25, the first relay rigid conduit 26, the suction cylinder 27, the second relay rigid conduit 28, the second suction tube 29, and the third relay rigid conduit. A suction conduit is formed by the body 32, and a part of the treatment instrument insertion channel 21 also functions as a part of the suction conduit.
[0015]
As described above, in the present embodiment, the hard conduit 22 (or the first to third relay rigid conduits 26, 28, 32) and the soft conduit 23 (or the first and second suction tubes 25, 29). Is eliminated by the adhesive 40, and the hard conduit and the soft conduit are smoothly connected. If the step is eliminated in this way, dirt is less likely to accumulate in the pipeline, and cleaning can be performed more reliably and easily with a cleaning brush.
[0016]
The treatment tool insertion channel 21 is connected in the following procedure.
First, a primer (undercoat) is applied to the outer peripheral surface of the first connection end portion 22b of the hard conduit body 22 in order to increase the adhesion between the hard conduit body 22 and the soft conduit 23 (primer treatment). Next, an adhesive 40 is applied to the inner surface of the soft conduit 23, and the soft conduit 23 is attached to the first connection end 22b. Subsequently, the tube stopper 24 is attached to the soft conduit 23 to fix the soft conduit 23, and waits until the adhesive 40 is cured. When the adhesive 40 has hardened, the adhesive that has protruded into the hard conduit 22 and the soft conduit 23 is removed by polishing, so that a step between the hard conduit 22 and the soft conduit 23 is eliminated. As described above, the hard conduit body 22 and the soft conduit 23 are connected smoothly.
[0017]
Suction pipe (the second connection end 22c of the hard pipe 22 and the first suction tube 25, the first suction tube 25 and the first relay hard pipe 26, the second relay hard pipe 28 and the second suction The connection of the tube 29, the second suction tube 29, and the third relay rigid pipe body 32) can be performed in the same procedure as described above.
[0018]
As described above, the present invention has been described based on the illustrated embodiment, but the present invention is not limited to the illustrated embodiment. For example, the present invention can be applied to an endoscope conduit including a hard conduit and a soft conduit, such as an air supply / water supply conduit communicating with an air supply / water supply nozzle, in addition to the treatment instrument insertion channel and the suction conduit. It is possible.
[0019]
【The invention's effect】
ADVANTAGE OF THE INVENTION As mentioned above, according to this invention, the connection part structure and connection method of an endoscope duct which can be more reliably cleaned with a cleaning brush can be obtained.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an endoscope to which the present invention is applied.
FIG. 2 is a view taken in the direction of the arrow II in FIG.
FIG. 3 is a partial cross-sectional view showing a structure of a connection portion of a treatment tool insertion channel.
FIG. 4 is an enlarged partial cross-sectional view showing a connection portion between a first connection end portion and a soft conduit of FIG. 3 in an enlarged manner.
FIG. 5 is a partial cross-sectional view showing a connection structure of a suction pipe line (near a suction cylinder).
FIG. 6 is a partial cross-sectional view showing a connection structure of a suction pipe (near a connector).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Endoscope 11 Insertion part 12 Operation part 13 Universal tube 14 Connector part 15 Observation window 16 Illumination window 17 Air supply / water supply nozzle 18 Treatment tool insertion channel outlet 19 Connection part 20 Treatment tool insertion port projection 21 Treatment tool insertion channel 22 Hard tube Road body 22a Inlet side end 22b First connection end 22c Second connection end 23 Soft conduit 24 Tube stopper 25 First suction tube 26 First relay rigid conduit 27 Suction cylinder 28 Second relay rigid conduit 29 second suction tube 30 suction button 31 suction base 32 third relay rigid pipe body 40 adhesive

Claims (4)

In an endoscope conduit, a conduit inserted into the insertion portion and the operation unit, a rigid conduit body, and a flexible conduit attached to an outer periphery of an end of the rigid conduit body,
An endoscope conduit connection structure, characterized in that an end of the hard conduit is filled with an adhesive for reducing a step between the end and the inner surface of the soft conduit. 2. The endoscope conduit connection structure according to claim 1, wherein the rigid conduit is made of metal, and the soft conduit is a synthetic resin tube. In an endoscope conduit, a conduit inserted into the insertion portion and the operation unit, a rigid conduit body, and a flexible conduit attached to an outer periphery of an end of the rigid conduit body,
After applying an adhesive to the inner surface of the end of the soft pipe, a hard pipe body is inserted into the soft pipe and bonded, and the excess adhesive protruding into the soft pipe is polished and removed. A method for connecting an endoscope channel. 4. The method for connecting an endoscope conduit according to claim 3, wherein the hard conduit is made of metal and the soft conduit is a synthetic resin tube.

Images