JPH058961Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an endoscope, and particularly to the structure of a connecting portion between the main body operating portion and the insertion portion.

[Prior Art] An endoscope is constructed by connecting a main body operating section to an insertion section that is inserted into a body cavity, etc.
Various members are provided inside the main body operating section, and if damage, failure, etc. occur to the built-in components of the main body operating section, repairs and inspections must be performed.
For this purpose, the outer shell of the main body operating section is formed to be disassembled. As is well known, since an angle knob is attached to the main body operating section, the outer shell of the main body operating section includes a rear side cover at the angle knob mounting section, and a main body cover including the part to be grasped by the operator. By separating the main body cover from the rear cover, the inside of the main body operating section can be opened.

[Problems to be solved by the invention] Here, when separating the main body cover from the rear side cover, the main body cover is configured so that it can be slid in the axial direction of the main body operation section. convenient. However, since the treatment instrument introduction part is provided in the connection part for connecting the insertion part to the main body operation part so as to protrude to the outside, it is difficult to slide the treatment instrument introduction part in this direction.

Therefore, the present applicant integrally formed a concave connecting cylinder part in the housing of the connecting part, and a plug member constituting a treatment instrument introduction part with a check valve at the tip can be attached and detached to this connecting cylinder part. When the main unit cover is removed, this plug member is removed from the connecting tube so that there is no protrusion in the housing of the connecting part, and the main body cover can be passed through this connecting part. A structure in which it could be removed in a manner such that it could be removed was proposed in Japanese Patent Application No. 88307/1983.

By the way, when it is inserted into the body of a patient and used for observation or treatment, it can be used, for example, to wash away dirt, blood, etc. adhering to the walls of body cavities, to inject nonflammable gas such as CO ₂ , or to spray pigments. A fluid injector is used for the purpose of .

As this fluid injector connection device, for example, one shown in Japanese Patent Application Laid-Open No. 63-35226 is known.

That is, as shown in FIG. 3, a connecting portion 3 between the main body operating portion 1 and an insertion portion 2 into a body cavity etc. has a branch connecting portion 4 through which a treatment instrument such as forceps is inserted. , a fluid injector connection device 5 for injecting fluid such as cleaning liquid or nonflammable gas into a body cavity or the like.
and is provided.

Here, the fluid injector connection device 5 is configured as shown in FIG. That is, a connecting member 7 having a fluid chamber 7a inside is fixed to the internal housing 6 of the connecting portion 3 with screws or the like.
A fluid injection tube 8 is connected to the connecting member 7, and a through hole 7b communicating with the fluid chamber 7a is formed in the connecting member 7. A connecting portion cover 9 is attached to the outside of the internal housing 6, and the connecting portion cover 9 includes a connecting tube portion 9a.
are arranged in a row so as to protrude downward.
The fluid injector connection device 5 is attached so as to pass through the connection cylinder portion 9a and face into the through hole 7b of the connection member 7 via the opening 6a formed in the inner housing 6.

The fluid injector connection device 5 is provided with a receiving member 10 for connecting an injector therein, and an opening 10a is formed at the tip of the receiving member 10 toward the side, and a check valve is installed in this opening. The members 11 are fitted together. In order to fix the check valve member 11, a holding cylinder 12 is fitted to the receiving member 10, and the check valve member 11 is held between the holding cylinder 12 and the receiving member 10. ing. Also,
The outer peripheral surface of this holding cylinder 12 has a connecting cylinder part 9.
A seal member 13 is provided to maintain an airtight state between the connecting member 7 and the connecting member 7, and a seal member 14 is provided to maintain an airtight state between the connecting member 7 and the connecting member 7. Further, the main body portion of the fluid injector connection device 5 is connected to the connection cylinder portion 9a of the connection portion cover 9.
In order to fix the connector to the connector, it has an engaging ring 15 that engages with the connecting cylinder portion 9a, a tightening ring 16 that is screwed into the engaging ring 15, and a cap 17 that is engaged with the tightening ring 16. A locking portion 17a for holding the receiving member 10 is formed on the cap 17.

If the fluid injector connecting device 5 is configured in this way, it will protrude outward to a large extent, and the main body cover cannot be slid unless the fluid injector connecting device 5 is removed. Although it is possible to remove this fluid injector connecting device 5, the connecting cylinder portion 9a cannot be removed.
Furthermore, since the holding cylinder 12 on the side of the fluid injector connecting device 5 is provided with a sealing member 13 between it and the connecting cylinder portion 9a, it is quite troublesome to attach and detach the fluid injector connecting device 5. Requires work.

The present invention was developed in view of the above points, and its purpose is to easily disassemble and reassemble the main body operating section of an endoscope equipped with a fluid injector connection mechanism. The goal is to make it possible.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a connecting portion between the main body cover of the main body operation portion and the insertion portion, and a connecting portion is provided along the outer surface of the housing of the connecting portion. The main body cover is disposed in a movable state, a branch connecting pipe and a syringe receiving part are integrally provided in the housing of the connecting part, and a treatment instrument insertion channel and a suction passage are provided in the branch connecting pipe. and a fluid supply tube is connected to the syringe receiving portion, and one end of the branch connecting pipe and the syringe receiving portion is provided in the housing in a non-protruding state, and each opening includes: The device is characterized by a structure in which a plug member for introducing a treatment instrument equipped with a check valve and an injector connecting body to which a fluid injector is removably connected are each removably attached.

[Function] Considering the ease of assembly, disassembly, and repair of the main body operating section of the endoscope, as is well known, there is a
Since an angle operation mechanism is provided, it is preferable that the main body cover can be inserted and removed from the side connected to the insertion portion. By the way, when an endoscope has a treatment instrument introduction section and a fluid injector connection device formed on the main body cover of the main body operation section, these include a treatment instrument insertion channel, a suction passage, and a fluid injector connection device. Because the tube forming the syringe is connected, the main body cover cannot be inserted or removed.

In consideration of the above points, in the present invention, a connecting portion is interposed between the main body cover and the insertion portion, and the treatment instrument insertion channel, the suction passage, and the tube are connected to the connecting portion. Moreover, the branch connecting pipe for connecting the treatment instrument insertion channel and the suction passage, and the syringe receiving part for connecting the tube are integrally molded with the housing of the connecting part.

In order to improve the insertability of the treatment instrument in the treatment instrument introducing section, the entrance portion of the treatment instrument must protrude to some extent from the housing of the connecting section. In addition, in order to be able to connect the fluid injector to the injector receiving part in a stable state, the fluid injector is detachably connected to the injector connection part.
This syringe connection also protrudes to some extent from the housing. However, if a portion of the connecting portion protrudes outward from the housing, the main body cover will be caught and become immovable. Generally, a plug member is removably attached to the introduction section of the treatment instrument. On the other hand, regarding the fluid syringe, instead of providing a syringe connection part directly on the housing, a syringe receiving part is formed, and the syringe connection body is removably connected to this syringe receiving part. .
The housing is formed with an opening in which the plug member and the syringe connecting body can be inserted and removed without protruding from the housing.

As described above, by forming the branch connection part and the syringe receiving part provided in the connection part by integrally molding means with the housing of this connection part, the number of parts constituting the connection part can be significantly reduced, and the sealing area can be significantly reduced. Since the number of parts can be reduced, the structure is simple and the number of parts is reduced, making it easier to assemble and disassemble the operating section of the endoscope.

In particular, due to the nature of endoscopes, they are cleaned each time they are used, and in order to ensure the completeness of this cleaning, the entire endoscope is immersed in a chemical solution for cleaning. If a sealing member is used as a mechanism to keep the inside of the operation part airtight and prevent chemical liquid from seeping into the inside, it is difficult to ensure complete airtightness over a long period of time, and repairs are difficult. When reassembling the main body control section after disassembling it for inspection, etc., it is necessary to replace the sealing member, and it is also necessary to check whether this sealing member is functioning properly. Therefore, the airtight maintenance mechanism by the seal member is
This makes disassembly and assembly troublesome.

Therefore, in order to maintain airtightness of the main body operating section, if the number of locations where a seal member is required to be interposed is reduced by at least one location, the disassembly and assembly operations of the main body operating section will become easier.

Moreover, when the plug member and the syringe connector are detached from the housing of the connecting portion, there is no longer a member protruding from the housing, and the main body cover of the main body operating portion can be moved in the direction of the connecting portion. Therefore, by moving the main unit cover in this direction, the inside of the main unit operating section will be opened, allowing repair and repair of the main unit operating section, etc.
Inspections can be easily carried out, resulting in excellent maintainability.

[Example] Hereinafter, an example of the present invention will be described in detail based on FIGS. 1 and 2.

In the figure, 20 indicates a main body operating section having a main body cover 20a, 21 indicates an insertion section into a body cavity, etc., and a connecting section 22 provided between the main body operating section 20 and the insertion section 21 is a The structure includes a housing 23 made of a strong material such as stainless steel, and built-in objects (not shown) such as a light guide and an image guide are inserted into the housing 23, and treatment tools such as forceps are inserted into the housing 23. The tip of a treatment instrument insertion channel 24 for insertion and one end of a fluid supply tube 25 for supplying cleaning liquid for cleaning the inside of the patient's body cavity and fluid such as nonflammable gas into the body cavity are facing. .

The housing 23 is integrally formed with a syringe receiving part 26 consisting of a cylindrical circumferential body part 26a and an end wall part 26b. A through hole 27 is formed, a connecting pipe 28 is fixedly provided in the through hole 27, and the aforementioned fluid supply tube 25 is connected to the connecting pipe 28.

As shown in FIG. 2, a fluid syringe connector 30 for mounting a fluid syringe 29 is removably attached to the syringe receiving portion 26. As shown in FIG. The fluid injector connection body 30 has a small diameter portion 30a.
and a large diameter portion 30b, and the small diameter portion 30b.
a into the syringe receptacle 26, the fluid syringe connection body 30 connects to the syringe receptacle 2.
6. A mounting recess 31 into which the fluid injector 29 is inserted is formed in the large diameter portion 30b.
A communication hole 32 is bored between the end of the small diameter portion 30a and the end of the small diameter portion 30a. And the small diameter portion 30b
A fluid chamber 33 is formed between the end surface of the tube and the end wall portion 26b of the syringe receiving portion 26, and the fluid supply tube 25 communicates with the communication hole 32 via this fluid chamber 33. It's summery.

Further, a circumferential recess 34 is formed in the outer peripheral portion of the small diameter portion 30a, and an O-ring 35 is fitted into the recess 34. Therefore, when the fluid syringe connection body 30 is attached to the syringe receiving part 26, it is held in an airtight state by the O-ring 35, and the fitting length of the small diameter part 30a to the syringe receiving part 26 is limited. By setting aside enough and leaving the O-ring 35 somewhat deflected, the fluid syringe connection 30 can be attached to the syringe receiving portion 26.
It is now possible to maintain the system so that it does not deviate from the current state. Furthermore, this fluid injector connection body 3
When the fluid injector 29 is not attached to the fluid injector connector 30, a cap 36 made of an elastic member is removably fitted onto the fluid injector connecting body 30.

The housing 23 also includes a syringe receiving portion 26.
At the same time, a branch connecting tube 37 is formed by integral molding, and the treatment instrument insertion channel 24 is connected to the branch connecting tube 37, and a suction passage 38 for suctioning dirt, etc. from inside the body is connected to the branch connecting tube 37. It is becoming more and more common. And, in the branch connection pipe 37,
A passage 39 and a branch passage 40 are provided, the treatment instrument insertion channel 24 is communicated with the passage 39, and the branch passage 40 is connected to the suction passage 38. In addition, the tip of the branch connecting pipe 37 is
Treatment tool passage 41 for inserting the treatment tool inside
A plug member receiving portion 37 opens in the housing 23 in order to removably attach the plug member 41 having a
It becomes a. This plug member 41 can insert a treatment tool, but when used for suction, it is necessary to prevent the backflow of waste in the body cavity.
A check valve 42 is attached to the tip.

This embodiment is constructed as described above, and the syringe receiving part 26 is integrally provided in the housing 23.
At the same time, the plug member 41 is inserted into the plug member receiving portion 37a of the branch connecting pipe 37.
Leave it inserted. Further, when the fluid injector 30 is not connected to the fluid injector connection body 30, the fluid injector connection body 30 includes a cap 36.
Attach it.

In order to supply fluid such as washing liquid into the body cavity with the insertion portion 21 inserted into the body cavity, the cap 3 fitted on the fluid injector connection body 30 is used.
6 is attached and detached, the fluid injector 30 is attached to the attachment recess 31 in the large diameter portion 30b, and the fluid injector 30 is operated. As a result, fluid is supplied from the communication hole 32 to the fluid supply tube 25 via the fluid chamber 33.

After diagnosing or treating a patient using an endoscope, it is necessary to clean and disinfect the entire endoscope. Therefore, in order to immerse the entire endoscope in the cleaning liquid, the interior must be kept airtight, but the syringe receiving part 26 is formed integrally with the housing 23, and Since the branch connection pipe 37 is also formed integrally with the housing 23, the insides of the connection part 22, main body operation part 20, and insertion part 21 are kept completely sealed, and for this reason, their internal contents are not exposed to cleaning liquid. It will be possible to reliably protect yourself from such things. Moreover,
Since the number of parts where a sealing member needs to be inserted in order to keep the interior sealed is reduced, problems such as seal leakage due to deterioration etc. do not occur.

Next, in order to repair or inspect the built-in components of the main body operating section 20, the main body cover 20 of the main body operating section 20 must be
It is necessary to move a, but this main body cover 2
To move 0a, first, the fluid injector connecting body 30 and the plug member 41 are detached from the syringe receiving part 26 and the plug member receiving part 37a provided in the housing 23 of the connecting part 22. As a result, the connecting portion 2
The outer surface of the housing 23 constituting the housing 2 has no protruding portion. Therefore, the main body cover 20a can be moved in the direction shown by the arrow in FIG.
Since the inside of 0 is opened, repairs, inspections, etc. can be easily performed. And repair/
After the inspection, the main body cover 20a may be moved in the direction opposite to the arrow in the figure and returned to its original position. Thereafter, by reinstalling the fluid injector connector 30 and the plug member 41,
You will be able to assemble it.

Moreover, the fluid injector connection body 30 and the plug member 41
is designed to be easily connected by simply inserting it into the syringe receiving part 26 and the plug member receiving part 37a, and is not fixed particularly firmly.
It becomes easy to attach and detach. Moreover, in this way, the fluid injector connection body 30 and the plug member 41 are connected to the housing 23.
If the fluid injector connector 30 or plug member 41 is designed to be easily attached and detached, there is a possibility that it will fall off during operation or during cleaning.
Even if it falls off, the inside of the connecting part 22 and main body operation part 20 are kept in a sealed state, so cleaning liquid etc. will not get inside.

[Effects of the invention] As explained above, in the present invention, a connecting part is interposed between the main body cover of the main body operation part and the insertion part,
The main body cover is movable along the outer surface of the housing of this connection part, and a branch connection pipe to which a treatment instrument insertion channel and a suction passage are connected, and a fluid supply tube are connected to the housing of this connection part. A stopper member for introducing a treatment instrument, which is integrally provided with a syringe receiving part and has a check valve in each opening formed with one end of the branch connecting pipe and the syringe receiving part not protruding into the housing. and a syringe connection body that removably connects a fluid syringe, so by attaching the plug member, forceps or other treatment instruments can be inserted into the treatment instrument insertion channel. If you attach the syringe connection body, you can connect a fluid syringe to inject fluid.
When these plug members and the syringe connector are attached and detached, there will be no protrusion on the outer surface of the housing of the connecting part, and by moving the main body cover toward this connecting part, the inside of the main body operation part will be opened. Moreover, since the branch connection pipe and the syringe receiving part are integrally provided in the housing, the number of parts for the connection part can be significantly reduced, and the number of places for sealing members can be reduced, making it easy to disassemble. It has various effects such as excellent ease of assembly.

[Brief explanation of drawings]

FIGS. 1 and 2 show an embodiment of the present invention, in which a sectional view of the main parts of an endoscope, FIG. 2 a sectional view of a fluid injector connection device, and FIGS. 3 and 4 show a conventional 3 is a sectional view of the main part of the endoscope, and FIG. 4 is a sectional view of the fluid injector connection device. 20...main unit operation section, 20a...main unit cover,
21... Insertion part, 22... Connection part, 23... Housing, 25... Fluid supply tube, 26... Syringe receiving part, 29... Fluid injector, 30... Fluid injector connection body, 30a... ...Small diameter part, 30b...Large diameter part, 31...Mounting recess, 32...Communication hole, 3
3... Fluid chamber, 34... Recess, 35... O-ring, 37... Branch connection pipe, 37a... Plug member receiving portion, 41... Plug member.

Claims (1)

[Scope of utility model registration request] A connecting part is interposed between the main body cover of the main body operation part and the insertion part, with the main body cover movable along the outer surface of the housing of the connecting part, and a branch connecting pipe is provided in the housing of the connecting part. and a syringe receiving portion are integrally provided, a treatment instrument insertion channel and a suction passage are connected to the branch connecting tube, a fluid supply tube is connected to the syringe receiving portion, and the branch connecting tube is connected to a fluid supply tube. and one end of the syringe receiving part is provided in the housing in a non-protruding state and opened,
A plug member for introducing a treatment instrument equipped with a check valve and an injector connecting body for removably connecting a fluid injector are each removably attached to each of these openings. Endoscope.