JPH10262901A - Endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely wash the branching line of a treatment tool insertion line and a fluid pipe line by making the branching part of a treatment tool insertion port and the fluid pipe line inside a hand operation part freely attachable and detachable to/from the hand operation part. SOLUTION: Among the branching lines 34 formed inside a joint 14, a forceps port 36 is formed at the upper end part of the branching line 34A inclined, extended and formed at an upper left part and a treatment tool insertion channel 38 inserted to an insertion part is connected to the branching line 34B extended and formed in the right side horizontal direction through a connection pipe 40 and fixing rings 42 and 44. Also, to the branching line 34C extended and formed in the left side horizontal direction, a suction pipe line 46 inserted to the hand operation part 12 is connected. Then, the branching part (branching adapter) 48 including the branching lines 34 for constituting a part of the joint 14 is constituted freely attachably and detachably to/from the joint 14. The joint 14 and the branching adapter 48 are formed by an elastic member, a recessed part and a projected part are elastically deformed and fitted and the branching adapter 48 is mounted to the joint 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope, and more particularly to an endoscope in which a branch between a treatment instrument insertion port and a fluid conduit is formed at a distal end of a hand operation portion of the endoscope.

[0002]

2. Description of the Related Art There is a medical endoscope in which a branch between a treatment instrument insertion port (forceps port) and a fluid conduit is formed at a distal end of a hand operation unit. A treatment tool such as forceps inserted from the treatment tool insertion port is guided to the treatment tool insertion channel via the branch path. A suction device, for example, is connected to the fluid conduit, and when the suction device is driven, a liquid such as cleaning water or a medical solution used for an affected part during an operation passes through the treatment instrument insertion channel through the branch passage. , And to the outside via a fluid line.

The branch path is cleaned with a cleaning brush or cleaning water every time the endoscope is used.

[0004]

However, in the conventional endoscope, even if the branch path is cleaned with the cleaning brush, the cleaning brush hardly hits the junction of the branch path, so that the junction can be reliably cleaned. There is a drawback that you can not. The present invention has been made in view of such circumstances, and an object of the present invention is to provide an endoscope that can reliably clean a branch path between a treatment instrument insertion path and a fluid conduit.

[0005]

According to the present invention, in order to achieve the above object, a hand operation unit is connected to a base end of an insertion unit to be inserted into a body, and a treatment tool insertion port is provided in the hand operation unit. In an endoscope having a branch portion formed with a branch portion to a fluid conduit, the branch portion is configured to be detachable from the hand operation portion.

According to the present invention, the branch portion on which the most contaminated branch path is formed is detachably provided on the hand operation section. Therefore, when the branch path is to be cleaned, the branch section is moved from the hand operation section to the branch section. Remove and wash intensively. Thus, the present invention can reliably clean the branch path. And if the branch part after washing is attached to the hand operation part,
The endoscope can be used as usual.

When the entire fluid conduit including the treatment instrument insertion channel is cleaned, a cleaning fluid is supplied from a forceps port or an inlet of the fluid conduit, and the cleaning fluid is cleaned at this point. As a result, the water pressure becomes low and the cleaning power becomes insufficient, so that the entire fluid line cannot be reliably cleaned. In view of the above, the invention according to claim 2 attaches a washing adapter in which a washing water flow path communicating with a fluid conduit is formed in a concave portion where the branch portion of the hand operation unit is removed, and via the washing adapter. Thus, the fluid line was washed. Thus, the cleaning liquid is supplied to the entire fluid pipeline without interference, so that the entire fluid pipeline can be reliably cleaned.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an endoscope according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an overall view of an electronic endoscope 10 to which the endoscope of the present invention is applied. The electronic endoscope 10 shown in FIG.
2 and a joint 14 at the tip of the
Is connected to an insertion portion 16 to be inserted into the body. A hard portion 20 is provided at the distal end of the insertion portion 16 via a curved portion 18. The bending portion 18 is remotely bent by rotating a pair of knobs 22 provided on one end surface of the hand operation portion 12.

On the end face of the hard portion 20, an objective lens (not shown), a suction hole, an air supply / water supply hole, and the like are formed, and a solid-state imaging device (CCD) is provided inside the objective lens. A flexible cable 24 extends from the hand operation unit 12, and the flexible cable 24 is branched into two on the way, and a light guide connector 26 is provided at one end.
And an electrical connector 28 is provided at the other end. The light guide connector 26 and the EVE connector 28 are respectively connected to connectors on the processor (not shown) side.

The hand operation unit 12 has a suction button 30
And an air / water button 32 are provided side by side. When the suction button 30 is pressed, a liquid (cleaning liquid,
When the air / water supply button 32 is depressed and the air / water supply button 32 is pressed, compressed air or a cleaning liquid is supplied from the air / water supply hole. FIG. 2 is a cross-sectional view of the joint 14 shown in FIG.
FIG. 3 is a sectional view taken along line 3-3 in FIG.

As shown in FIG. 2, a branch path 34 is formed inside the joint 14. This branch 34
Of these, a forceps port 36 is formed at the upper end of the fork 34A that is formed to extend inclining to the upper left. Also,
A treatment instrument insertion channel (fluid channel) 38 that is inserted into the insertion portion 16 (see FIG. 1) includes a connecting pipe 40 and fixed rings 42 and 44 at a branch 34B extending in the horizontal direction on the right side in the drawing. Connected through. A suction pipe (fluid pipe) 46 inserted through the hand operation unit 12 is connected to a branch 34C extending in the horizontal direction on the left side in the drawing. According to the branch path 34, a treatment tool such as forceps inserted from the forceps port 36 can be passed through the treatment tool insertion channel 38 from the branch 34 A.
The liquid around the affected part sucked from the treatment instrument insertion channel 38 can be guided to the junction 34.
B and 34C can be guided to discharge to the outside through the suction line 46.

In such a branch 34, since the branch is branched in three directions, the sucked liquid tends to accumulate at the junction of the branch, and the junction is most easily contaminated. Therefore,
In the present embodiment, a branch portion (hereinafter, referred to as a “branch adapter”) 48 including the branch path 34 and constituting a part of the joint 14 is configured to be detachable from the joint 14.

The joint 14 and the branch adapter 48 are
While being formed of elastic members such as plastic,
A concave portion 50 and a convex portion 52 that fit each other are formed.
The recess adapter 50 and the projection 52 are elastically deformed and fitted to each other, thereby connecting the branch adapter 48 to the joint 1.
4 can be easily mounted. In addition, if packings 53 such as O-rings are attached around the respective end openings of the branch 34B and the branch 34C, the connecting portion between the branch 34B and the treatment instrument insertion channel 38, and the branch 34C and the suction conduit are provided. The airtightness of the connection portion with the 46 can be improved. Instead of the packing 53, a convex ridge is formed around each end opening of the branch 34B and the branch 34C, and the branch ridge 48 is elastically deformed between the branch ridge 48 and the branch adapter 48 to form the branch adapter 48. It may be fitted to the joint 14. Further, the ridge may be formed on the branch adapter 48 side.

In the endoscope configured as described above, when cleaning the branch passage 34, the branch adapter 48 is removed from the joint 14 and cleaning is focused. That is, each crossroad 34
A cleaning brush is inserted from each of the open ends of A to 34C, and particularly, a merging portion of the junctions 34A to 34C is carefully cleaned. In the related art, since the cleaning brush is inserted from the forceps port, there is a portion where the cleaning brush does not hit the junction. Further, although the cleaning brush can be inserted from a valve or the like, the contaminated portion cannot be effectively cleaned because of the distance and the curved path.
However, in the present embodiment, since the cleaning brush can be inserted from three directions, the merging portion can be reliably cleaned.

Therefore, in the present embodiment, the branch path 34
Can be reliably washed. Then, by attaching the cleaned branch adapter 48 to the joint 14, the endoscope 10 can be used as usual. In the present embodiment, the branch passage 34 is cleaned with the cleaning brush. However, the present invention is not limited to this. Alternatively, if the branch adapter 48 is formed by injection molding from an inexpensive material such as plastic or rubber and a plurality of such adapters are prepared, the branch adapter 48 may be replaced with a new one without cleaning.

Next, a method for cleaning the treatment instrument insertion channel 38 and the suction conduit 46 will be described. FIG. 4 shows the joint 14 with the branch adapter 48 removed.
FIG. FIG. 5 is a cross-sectional view showing a state in which the cleaning adapter 54 is attached to the concave portion 15 of the joint 14 from which the branch adapter 48 has been removed.

The cleaning adapter 54 is formed by injection molding of a material such as plastic, and has two curved cleaning water channels 56 and 58 formed therein. The cleaning water flow channels 56 and 58 are formed without intersecting in order to eliminate a shortage of cleaning power due to interference of the cleaning liquid. The curvatures of the cleaning water channels 56 and 58 are set so that the cleaning brush can be inserted smoothly even when the cleaning brush is inserted.

In FIG. 5, caps 60, 62 are attached to the upper ends of the cleaning water flow paths 56, 58, respectively. The caps 60, 62 are connected to cleaning liquid supply devices (64) via cleaning liquid supply tubes 64, 66, respectively. (Not shown). On the other hand, the other end of the washing water channel 56 is connected to the treatment instrument insertion channel 38, and the other end of the washing water channel 58 is connected to the suction line 4.
6.

Therefore, when the cleaning liquid supply device is driven to supply the cleaning liquid to the cleaning adapter 54, the treatment instrument insertion channel 38 is cleaned with the cleaning liquid from the cleaning water flow path 56, and the suction pipe 46 is supplied with the cleaning water flow. The washing is performed with the washing liquid from the passage 58. As described above, in the present embodiment, the cleaning liquid supply system for supplying the treatment tool insertion channel 38 and the cleaning liquid supply system for supplying the suction pipe 46 are separate systems, so that the treatment tool insertion channel 38 and the suction pipe 46 can be reliably washed.

In the present embodiment, the cleaning liquid is supplied from the cleaning liquid supply device. However, the present invention is not limited to this. A syringe is directly connected to the bases 60 and 62, and the cleaning liquid is supplied from these syringes. May be. FIG.
Is a cross-sectional view showing another embodiment of the cleaning adapter 70, and the same or similar members as those of the cleaning adapter 54 in FIG. 5 are denoted by the same reference numerals and description thereof is omitted.

The washing adapter 70 shown in FIG. 1 is formed by crossing (but not merging) the washing water flow paths 72 and 74. As a result, the washing water flow paths 72, 7
Since the curvature of 4 can be set larger, the cleaning brush can be inserted more smoothly.

[0022]

As described above, according to the endoscope according to the present invention, the branch portion having the branch passage is detachably provided on the hand operation portion, and the hand operation portion is used for cleaning the branch passage. Since it is possible to remove the branch portion from the main body and perform the cleaning intensively, the branch path can be reliably cleaned.

[Brief description of the drawings]

FIG. 1 is an overall view of an electronic endoscope to which an endoscope of the present invention is applied.

FIG. 2 is a sectional view taken along line 2-2 in FIG.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a cross-sectional view of the joint shown in FIG. 2 with a branch portion removed from the joint;

FIG. 5 is a sectional view of a joint in which a cleaning adapter is attached to the joint.

FIG. 6 is a sectional view showing another embodiment of the cleaning adapter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Electronic endoscope apparatus 12 ... Hand operation part 14 ... Joint 16 ... Insertion part 34 ... Branch path 38 ... Treatment tool insertion channel 46 ... Suction line 48 ... Branch adapter 54, 70 ... Cleaning adapter

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaaki Morizumi 1-3324 Uetakecho, Omiya City, Saitama Prefecture Inside Fuji Photo Equipment Co., Ltd. (72) Inventor Osamu Kobayashi 1-324 Uetakecho, Omiya City, Saitama Fuji Photo Kouki Co., Ltd.

Claims (2)

[Claims] A hand operation unit is connected to a base end of an insertion unit to be inserted into a body, and the hand operation unit has a branch portion in which a branch portion between a treatment instrument insertion port and a fluid conduit is formed. In an endoscope, the end portion is configured to be detachable from the hand operation section. 2. A flush adapter having a flush water flow path communicating with the fluid conduit is attached to a concave portion of the hand operation unit from which the branch portion is removed, and the fluid pipe is connected via the flush adapter. The road is cleaned.
The endoscope as described.