JPH0366353A - Endoscope - Google Patents

Abstract

PURPOSE:To prevent a common nozzle from being clogged due to dirt, to thin the outside diameter of a tip constituting part, and to provide a feed water duct and a feed air duct in a free position by providing obliquely at least one of the feed air duct and the feed water duct against the common nozzle. CONSTITUTION:In a tip part body member 10, a feed air duct A is pierced roughly in parallel to the longitudinal direction of a tip constituting part 32, and it is pierced so that the diameter of the tip of the feed air duct A is roughly equal to the outside diameter of a common nozzle 1 in order to insert the common nozzle 1, the intermediate diameter is roughly equal to the inside diameter of the common nozzle 1, and the diameter of the rear end is roughly equal to the outside diameter of a feed air base part 12 for connecting a feed air tube 13. A feed water duct W is pierced obliquely at an angle (d) against the feed air duct A so as to become the vicinity of the tip of an intermediate position of the feed air duct A, and the diameter of the rear end of the feed water duct W is pierced so as to become roughly equal to the outside diameter of the feed air base part 14 for connecting a feed water tube 15. According to this constitution, clogging of the common nozzle is prevented by feeding water from the feed water duct, and a position in which the feed water duct and the feed air duct are provided is allowed to have the degree of freedom.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an endoscope having a distal end component in which an air supply conduit and a water supply conduit communicate with the same nozzle.

[Prior Art] In recent years, endoscopes (scopes or fiberscopes), which can diagnose and examine internal organs in body cavities by inserting an elongated insertion section into body cavities, have been widely used. There is. Furthermore, it is used not only for medical purposes but also for industrial purposes to observe and inspect objects such as inside pipes of boilers, machines, chemical blunts, etc., or inside machines.

Furthermore, various types of endoscopes using solid-state imaging devices such as charge-coupled devices (CODs) as image carriers are also available.

At the tip of the distal end component of this medical endoscope, there is an air supply nozzle connected to an air supply conduit for supplying gas into the body cavity, and a water supply conduit for supplying liquid into the body cavity. A water supply nozzle connected to the endoscope, a forceps channel inserted into the endoscope, and an objective for focusing the image of the subject such as the subject on the input end face of the image guide fiber or the photoelectric conversion surface of the solid-state MS element. A lens and an illumination lens for focusing the illumination light of the light guide fiber onto the subject are provided.

When the treatment tool is inserted into the body cavity by passing through the forceps channel, the treatment tool can be easily used.

In order to do this, the treatment tool must be projected to approximately the center of the field of view of the objective lens. Therefore, the forceps channel and the objective lens need to be disposed close to each other.

In addition, in order to irradiate the ii*m field of the objective lens with sufficient illumination light, both the objective lens and the illumination lens are
Must be placed close together.

For this reason, the forceps channel, objective lens, and illumination lens are arranged close to each other. Therefore, the air supply nozzle and the water supply nozzle are arranged near the outer periphery of the tip component.

Furthermore, in order to reduce pain for the subject into whom the insertion section is inserted, the distal end component needs to be formed with a small diameter, and the air supply nozzle and water supply nozzle need to be small.

Furthermore, the above? When the insertion portion of the Jlaw is inserted into a body cavity, dirt from the body cavity may accumulate in the air nozzle or water nozzle, clogging the air nozzle or water nozzle. Particularly in the case of an air supply nozzle, since the substance flowing through the nozzle is gas, it is not easy to eliminate blockages. Therefore, after using the endoscope, the water supply pipe, air supply pipe, etc. of the endoscope must be thoroughly cleaned.

In order to prevent the air supply nozzle and the water supply nozzle from being clogged with dirt, for example, as shown in FIG. 52 connects a water supply pipe 53 disposed perpendicularly to the communication pipe 52 and an air supply pipe 54 disposed similarly, and further connects the communication pipe 52 to the communication pipe 52. An endoscope having a structure in which it communicates with a common nozzle 55 disposed perpendicularly to the passage 52 has been considered. This is to remove dirt from the common nozzle by sending water from the water pipe 53. In this endoscope, a pin 56 is attached as a closing member to the opening on the outer circumferential surface of the communicating conduit 52 bored from the outer circumferential surface of the distal end component, and the bottle 56 is not soldered to the distal end component. Or it is fixed watertight with adhesive or the like.

Further, in Japanese Utility Model Application Publication No. 63-184003, as shown in FIG. Endoscopy has been proposed.

[Problems to be Solved by the Invention] In the distal end component of an endoscope using a communicating conduit, since a closing member is provided at the opening on the outer peripheral surface of the communicating conduit,
The outer diameter of the distal end component is thicker, and in the distal end component of an endoscope in which a recess is formed, depending on the position where the recess is formed,
There is a problem that the arrangement positions of the water supply pipe and the air supply pipe are fixed, and the outer diameter of the distal end component becomes thicker.

The present invention has been made in view of the above-mentioned points, and while preventing the common nozzle from clogging with dirt, the outer diameter of the tip component is small, and the water supply pipe and the air supply pipe are arranged in free positions. The aim is to provide an endoscope that can be used to

[Means for Solving the Problem] At least one of the water supply pipe and the water supply pipe is arranged diagonally with respect to the common nozzle arranged at the tip component of the inner 1A mirror. It consists of

[Function] With this configuration, clogging of the common nozzle is prevented by water supply from the water supply pipe, and flexibility is provided in the arrangement positions of the water supply pipe and the air supply pipe.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 and FIG. 2 Regarding the first embodiment of the present invention, FIG.
A) is a front view of the endoscope tip structure, FIG. 1B is a cross-sectional view of the main part of the endoscope tip structure, and FIG. 2 is a configuration diagram of the endoscope a device.

As shown in FIG. 2, an endoscope, for example, an electronic endoscope device, includes an endoscope 30 formed to have a length so as to be inserted into a body cavity, and a universal cord 40 of the endoscope 30. It is composed of a video processor 42 connected by a connector 41, and a monitor 43 that displays a subject such as an intra-body cavity region based on a video output signal from a video processor 42.

The endoscope 130 includes an elongated insertion section 31 and an elongated insertion section 31.
A large-diameter operating section 35 provided at the rear end, a universal cord 40 extending to the side of the operating section 35,
A connector 41 is provided at the end of this universal cord 40.

The insertion section 31 includes a tip structure section 32 in which an image carrier element for carrying an image of a subject is disposed, a bending section 33 that can be bent vertically/horizontally and connected to the rear end of the tip structure section. It is composed of a flexible tube section 34 connected to the rear end of this curved section 33. The operation section 35 includes an angle knob 39 for operating the bending section, and the insertion section 31.
a forceps port 36 communicating with a forceps channel provided therein;
an air supply control valve 37 that controls air supply to the air supply pipe line installed inside the insertion part 31; a water supply control valve 38 that controls water supply to the water supply pipe line arranged inside the insertion part 31; It is composed of a switch (not shown) and the like for controlling the video processor 42.

The video processor device 42 includes a light source unit that supplies illumination light to a lie 1 guide installed in the endoscope, and performs various signal processing on the image signal input from the image sensor to generate a video signal. For example, it is comprised of a video signal processing section that outputs to the monitor 43, and the like.

In this embodiment, the tip component 32 of the aforementioned family gift TF130
The shape is described later.

As shown in FIG. 1(A), the tip structure portion 32 includes a tip cover 11 having a substantially circular cross section, and a substantially circular illumination unit in which the output end surface of the light guide 6 described above is disposed at the rear end. A lens 2.3, a forceps channel 5 having a substantially circular cross section communicating with the forceps port 36 mentioned above, an objective lens 4 having a substantially circular shape having the above-described image carrier disposed at its rear end, and this objective lens. A common nozzle 1 having an opening facing toward is disposed.

FIG. 1<8) is a cross-sectional view of the main part taken along line xx' in FIG.
It is formed so as to cover the front surface of the tip body member 10, and is bonded to the tip body member 10, for example. Further, the outer periphery of the rear end of the tip main body member 10 is fastened with the covering member 18, for example, and the above-mentioned curved portion 33
It is connected to.

A hole for pushing the light guide 6 described above is formed in the tip main body member 10 substantially parallel to the longitudinal direction of the tip component 32, and the light guide 6 is inserted therein. Also,
The tip cover 11 is provided with an opening corresponding to the diameter of the member for attaching the illumination lens 3 and the illumination I nozzle 3 so as to communicate with the hole for inserting the light guide 6 into the tip body member 10. The illumination lens 3 is placed in this opening.
The installation is done by inserting the parts together.

Further, an air supply conduit is provided in the tip main body member 10 so as to be substantially parallel to the longitudinal direction of the tip component 32 . In order to insert the common nozzle 1, the diameter of the tip of this air supply pipe A is as follows:
The diameter is approximately equal to the outer diameter of the common nozzle 1, the middle diameter is approximately equal to the inner diameter of the common nozzle 1, and the diameter of the rear end is approximately equal to the outer diameter of the air supply cap 12 for connecting the air supply pipe 13. It is drilled in. The tip cover 11 is provided with an opening approximately equal in outer diameter to the common nozzle 1 so as to communicate with the air supply pipe A.

Furthermore, a screw hole is bored perpendicularly to the air supply conduit at the distal end of the air supply conduit A of the distal end main body member 10, and the distal end cover 11
An opening is also provided in the screw hole so as to communicate with the screw hole.

Further, the water supply pipe W is arranged at an angle d with respect to the air supply pipe A so that the water supply pipe W is located near the tip of the air supply pipe A at an intermediate position.
It is drilled diagonally. The diameter of the rear end of the water supply pipe W is bored so as to be approximately equal to the outer diameter of the air supply mouthpiece 14 to which the water supply pipe 15 is connected.

The common nozzle 1 is inserted into the tip side of the air supply pipe A described above, and includes a screw 16 screwed into a screw hole, and a low-temperature curing rubber 17 such as silicone rubber applied to the gap between the common nozzle 1 and the tip cover 11. Fixed by

With this configuration, the gas that is controlled by the air supply control valve 37 and the liquid that is controlled and supplied by the water supply control valve 38 are ejected from the same common nozzle 1. Stagnant dirt etc. are smoothly removed.

FIG. 3 is a cross-sectional view of a main part of the endoscope distal end component according to a second embodiment of the present invention. Note that the same reference numerals are used for the same members as in the first embodiment.

In this embodiment, the tip main body member 10 includes a tip component 3.
A common conduit WA is provided approximately parallel to the longitudinal direction of the tip body member 10 to approximately the middle of the tip body member 10. This common conduit WA
The diameter of the nozzle is approximately equal to the outer diameter of the common nozzle 1, as in the first embodiment.

The water supply pipe W is formed diagonally at an angle dl with respect to the common pipe WA, and the air supply pipe A is also formed diagonally at an angle d2 with respect to the common pipe WA.

The other configurations are the same as in the first embodiment.

In this embodiment, the water supply mouthpiece 14 and the air supply mouthpiece 15 can be arranged close to a light guide (not shown). That is, there is an effect that the outer diameter of the tip portion 32 becomes thinner.

Further, other effects are similar to those of the first embodiment.

FIG. 4 is a sectional view of a main part of an endoscope tip structure according to a third embodiment of the present invention. Note that the same reference numerals are used for the same members as in the first embodiment and the second embodiment.

In this embodiment, the tip main body member 10 includes a tip component 3.
A common conduit WA is provided substantially parallel to the longitudinal direction of the two up to a position where the common nozzle can be inserted.

The diameter of this common conduit WA is made approximately equal to the outer diameter of the common nozzle 1, as in the first embodiment. The water supply pipe W is bored diagonally at an angle 1*d3 with respect to the common pipe WA, and the air supply pipe A is bored so as to communicate with the common pipe WA.

The other configurations are the same as those in the first and second embodiments.

In this embodiment, compared to the air supply pipe A, the common pipe WA
This has the effect of making the diameter thicker.

Further, other effects are similar to those of the first embodiment and the second embodiment.

In addition, in this description, although the cross section xx' of the endoscope front-end|tip structure part 32 was demonstrated, you may drill an air supply pipe, a water supply pipe, and a common pipe regardless of this cross section.

[Effects of the Invention] As explained above, according to the present invention, compared to conventional endoscopes, the air supply pipe, the water supply pipe, and the common pipe can be arranged at arbitrary positions. Furthermore, by using a common nozzle, there is an effect that dirt clogging the common nozzle can be easily removed.

[Brief explanation of drawings]

1 and 2 relate to the first embodiment of the present invention, FIG. 1(A) is a front view of the endoscope tip component, and FIG. 1(B) is a main part of the endoscope tip component. 2 is a configuration diagram of an endoscope device, FIG. 3 is a sectional view of a main part of an endoscope tip structure according to a second embodiment of the present invention, and FIG. 4 is a diagram of a sword 3 of the present invention. FIGS. 5 and 6 are sectional views of main parts of the endoscope tip structure according to the embodiment, and FIGS. 5 and 6 are main part sectional views of the conventional endoscope tip structure. 1... Common nozzle 10... Tip body 11.
...Tip cover 32...Tip component A...Air supply pipe B...Water supply pipe Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 9

Claims (1)

[Claims] In an endoscope having a distal end component in which an air supply pipe and a water supply pipe communicate with the same common nozzle, at least one of the air supply pipe and the water supply pipe is arranged diagonally with respect to the common nozzle. An endoscope characterized by: