JP4225611B2 - Endoscope pipe cleaning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscope conduit cleaning device that can simultaneously clean a conduit for supplying / feeding air to / from a distal end configuration portion of an endoscope and a conduit for suctioning from the distal end configuration portion.
[0002]
[Prior art]
In general, an endoscope is provided with an air supply / water supply operation valve for operating air supply / water supply and a suction operation valve for operating suction in parallel with the operation unit. A conventional endoscope pipe cleaning apparatus, for example, as disclosed in Japanese Patent Laid-Open No. 4-371130, seals the opening of each cylinder arranged in parallel to the operation section, and cleans the cleaning liquid from the opening of the cylinder. Etc. were prevented from being ejected.
[0003]
22 and 23 are diagrams showing the overall configuration of an endoscope. Reference numeral 1 denotes an insertion portion, 2 denotes an operation portion, 3 denotes a universal cord portion, and 4 denotes a connector portion. For cleaning in the pipe, after setting the pipe cleaning device 21 to the air / water supply cylinder 8 and the suction cylinder 9, for example, as shown in FIG. 22, using the air supply pump 22 and the suction pump 23 of the light source, The trachea 10 and the tip-side water supply pipe 11 were washed with water, and the tip-side suction pipe 12 was sucked and washed with suction from the tip side.
[0004]
[Problems to be solved by the invention]
However, the water supply wash in the tip end side air supply conduit 10 and the tip end side water supply conduit 11 has not been reliably and efficiently washed. That is, since the cylinder openings of the air / water supply cylinder 8 and the suction cylinder 9 are simply sealed, the fluid supplied into the air / water supply cylinder 8 is both water and air. If the balance between the resistances of both the connector-side air supply pipe 18 and the connector-side water supply pipe 19 up to the cylinder 8 is poor, in reality, almost no water is supplied to the cylinder, and only air is supplied. There were many. For this reason, the water supply washing in the tip end side air supply conduit 10 and the tip end side water supply conduit 11 is insufficient and takes time because the amount of water supply is small.
[0005]
Further, the water draining operation in the front end side air supply pipe line 10 and the front end side water supply pipe line 11 after the water washing is closed until the water draining is completed by closing the water tank attaching part with a finger as shown in FIG. It was very troublesome.
[0006]
The present invention has been made paying attention to the above circumstances, and the object of the present invention is to clean the water supply wash and drain in the front end side air supply conduit and the front end side water supply conduit with the front end suction tube in the front end side. It is another object of the present invention to provide an endoscope line cleaning apparatus that can be performed reliably, in a short time and without any trouble.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, the present invention providesAt least an air / water supply cylinder and a suction cylinder connected in the middle of the fluid conduit are arranged in parallel in the operation portion of the endoscope, and a conduit operation valve provided detachably with respect to each cylinder is provided with the fluid pipe. After removing to clean the road, open each cylinder openingIn the endoscope pipe cleaning device for sealing,The cleaning device main body is provided with a plug body portion that seals the opening of the suction cylinder and an air / water supply switching valve that is attached to the air / water supply cylinder, and the air / water supply changeover valve is a shaft with respect to the air / water supply cylinder. The connector-side water supply conduit in the air / water supply cylinder is selectively selected as the tip-side air supply conduit, the tip-side water supply conduit, and the connector-side air supply conduit as the tip-side air supply conduit and the tip-side water supply conduit by the forward / backward operation in the direction. The cleaning device main body has an engaging part that is engaged with the air / water supply switching valve and maintains the state when the air / water supply switching valve moves forward and backward, either integrally or separately. ProvidedIt is characterized by that.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a first embodiment, and FIG. 1 is an overall configuration diagram of an endoscope pipe cleaning device. The endoscope includes an insertion portion 1, an operation portion 2, a universal cord portion 3, and a connector portion 4. A distal end configuration portion 5 is provided on the distal end side of the insertion portion 1. The distal end configuration portion 5 is provided with an air / water supply nozzle 6 and a suction port 7 in addition to an observation window and an illumination window (not shown).
[0009]
The operation unit 2 is provided with an air / water supply cylinder 8 and a suction cylinder 9. An air supply / water supply operation valve and a suction operation valve (not shown) are detachably attached to the air supply / water supply cylinder 8 and the suction cylinder 9, respectively, and the duct cleaning device of the present invention can also be attached detachably.
[0010]
Inside the insertion portion 1, a tip end side air supply conduit 10, a tip end side water supply conduit 11, and a tip end side suction conduit 12 are disposed, and the rear end sides thereof are respectively the air supply / water supply cylinder 8 and An opening is formed in the suction cylinder 9.
[0011]
In addition, about the front-end | tip part side suction pipeline 12, the pipeline has branched on the way, The edge part is connected to the treatment tool insertion port 13. FIG. A treatment instrument insertion port cleaning tube 14 that is also one of the treatment instrument insertion ports 13 is detachably attached.
[0012]
On the other hand, the connector portion 4 is provided with a suction pump connection port 15, a water supply tank connection port 16 and an air supply pump connection port 17. A connection tube from the suction pump 23 is connected to the suction pump connection port 15. A water tank 24 is connected to the water tank connection port 16. A pipe line from an air supply pump 22 provided in the light source device (not shown) is connected to the air supply pump connection port 17.
[0013]
In FIG. 1, after completion of the inspection, the treatment instrument insertion port washing tube 14 is attached to the treatment instrument insertion port 13, the distal end component portion 5 is placed in the washing liquid 25, and the conduit washing device 21 of the present invention is to be attached. Indicates the state. At this time, the air supply pump 22 and the suction pump 23 are still in the OFF state.
[0014]
FIG. 2 is an external view and a cross-sectional view of the pipe cleaning device 21. The pipe cleaning device 21 is roughly composed of a cylinder port gripping portion 26, a main body 27, and a connecting plate 28. The material of the cylinder port gripping portion 26 is made of, for example, a plate material such as SUS, and the shape is formed by bending three sides including one side provided with the cleaning drain port 52. A U-shaped slit 54 is formed on the bottom surface.
[0015]
The main body 27 and the cylinder port gripping portion 26 are positioned and fixed by a plurality of fixing pins 46 and an adhesive from the side. The connecting plate 28 is mainly provided with an air / water switching valve 29 and a plug body 30. The air / water supply switching unit 29 mainly includes a movable shaft 31, a bearing 32, a first spring 33, and a spring seat 34, and the spring seat 34 is sandwiched by fixing the adhesive screw between the movable shaft 31 and the bearing 32. Yes. The spring seat 34 has a flange portion and receives the other end of the first spring 33. The other end of the first spring 33 is received by the connecting plate 28. A guide pin 35 is fixed to the upper portion of the bearing 32 so as to protrude in the horizontal direction.
[0016]
Further, the movable shaft 31 is provided with a first rubber packing 36, a second rubber packing 37, a third rubber packing 38, a check valve 39 and a slide receiver 40. A flow path 45 is formed at the center of the movable shaft 31 in the axial direction and the outer periphery. The material of the movable shaft 31 is mainly a metal such as SUS, and the materials of the first rubber packing 36, the second rubber packing 37, the third rubber packing 38, and the check valve 39 are silicon rubber materials and the material of the slide receiver 40. Is made of resin such as modified PPO and PSU.
[0017]
The plug body portion 30 includes a second spring 41, a plug body portion main body 42, and a plug body portion main body receiver 43, and the plug body portion main body 42 is provided with a fourth rubber packing 44. At the other end of the plug body receiver 43, a flange portion that is hooked on the connecting plate 28 is provided. The plug body main body receiver 43 and the plug body main body 42 are fixed with adhesive screws by sandwiching the second spring 41 as shown in FIG. In addition, the main line washing apparatus 21 uses a chemical resistant and autoclave resistant adhesive, and an epoxy based chemical resistant and heat resistant adhesive.
[0018]
Similar to the cylinder port gripping portion 26, the upper surface of the main body 27 has a second U-shaped slit 55, and a partially raised pin slide portion 47 is provided at the bottom of the slit 55. The pin slide part 47 has an inclined part 48 and a concave part 49 provided on the upper part.
[0019]
Further, there is an air supply mode indicator 51 in the vicinity of the concave portion 49, and a water supply mode indicator 50 in the middle of the inclined portion 48. Further, a slip stopper 53 is provided on the outer side of the slit 55 on the mouth side. Further, in the middle of the slit 55, a concave portion 49 is provided that indicates an attachment / detachment point to / from the cylinder portion of the main line cleaning device 21.
[0020]
As described above, the connection plate 28 to which the air / water supply switching valve 29 and the plug body 30 are fixed is covered with the cylinder port gripping portion 26 and the main body 27 so as to be slidable horizontally. In FIG. 2, the casing is composed of two bodies, the cylinder port gripping portion 26 and the main body 27, but may be composed of one body. Incidentally, the material of the main body 27 is modified PPO. It is made of resin such as PSU.
[0021]
Next, the operation of the first embodiment will be described. Prior to the description of the operation, the cylinder side structure shown in FIG. 3 will be described. The air / water supply cylinder 8 and the suction cylinder 9 are fixed to the operation portion main body 56. The fixing method is such that both the air supply / water supply cylinder 8 and the suction cylinder 9 sandwich the operation portion main body 56 from the outside by the first stopper base 57 and the second stopper base 60 having flange portions at the ends, and the fifth rubber packing. 58 is watertight.
[0022]
There are four openings on the inner surface of the air / water supply cylinder 8, and each opening is connected to each pipe line via a pipe material 59. The air inlet 59a communicates with the connector-side air supply conduit 18, the air outlet 59b communicates with the distal-end-side air-feed conduit 10, the liquid inlet 59c communicates with the connector-side water-feed conduit 19, and the liquid outlet 59d communicates with the distal-end-side water-feed conduit 11. is doing.
[0023]
On the other hand, there are two openings on the inner surface of the suction cylinder 9. Similarly, each opening is connected to each pipe line via a pipe material 59. The detergent inlet 59e communicates with the distal end side suction line 12, and the detergent outlet 59f communicates with the connector side suction line 20.
[0024]
In FIG. 3, after the air / water supply switching valve 29 and the plug body 30 are inserted into each cylinder, the cylinder port gripping portion 26 integrated with the main body 27 is slid in the lateral direction to move the guide pin 35 to the position of the water supply mode index 50. It is in the state moved to.
[0025]
  In this state, the guide pin 35 contacts the inclined portion 48.Are engaged.At this time, the main line cleaning device 21 is configured such that the first stopper base 57 and the second stopper base 60 on the operation portion side are connected to the cylinder port gripping portion 26, the spring seat 34, and the plug body main body 42 on the main passage cleaning device 21 side. It is pinched and fixed.
[0026]
The communication state of each pipeline in this state is as follows.
The liquid inlet 59c communicates with both the liquid outlet 59d and the air outlet 59b, and the air inlet 59a is shielded by the close contact between the check valve 39 and the air / water supply cylinder 8. The detergent inlet 59e and the detergent outlet 59f communicate with each other. Both cylinder openings are sealed to the outside by a first rubber packing 36 and a fourth rubber packing 44 as seal members.
[0027]
In this state, the other parts are connected as shown in FIG. 1, and the air supply pump 22 and the suction pump 23 are operated as follows. Since the connector-side air supply line 18 is closed in the air / water supply cylinder 8, all the air supply of the air supply pump 22 is sent into the water supply tank 24 and pressurizes the water surface. The water in the water supply tank 24 passes through the connector-side water supply pipe 19 and is supplied to the tip-end-side air supply pipe 10 and the tip-end-side water supply pipe 11 to wash both pipes 10 and 11. On the other hand, since the washing liquid is sucked from the suction port 7 and the treatment instrument insertion port 13 in the suction line system, the inside of the tip side suction line 12 and the connector side suction line 20 can be washed.
[0028]
  4 further slides the cylinder port gripping part 26 and the main body 27 in the lateral direction from the state of FIG. 3 to move the guide pin 35 to the position of the air supply mode index 51, and as a result, the air supply / water supply switching valve 29 is set. It is in the state of being moved upward in the axial direction. Guide pin 35 is inclined48After being guided along the recess 49 in the upper part of the pin slide 47Is engaged.
[0029]
The communication state of each pipeline in this state is as follows.
The air inlet 59a communicates with both the air outlet 59b and the liquid outlet 59d, and the liquid inlet 59c is shielded by the close contact between the third rubber packing 38 and the air / water supply cylinder 8. The detergent inlet 59e and the detergent outlet 59f remain in communication with each other as in the state of FIG. That is, since the connector-side water supply line 19 is closed in the air / water supply cylinder 8, all the air supply from the air supply pump 22 passes through the connector-side air supply line 18 and is sent into the air / water supply cylinder 8. Further, it passes between the check valve 39 and the inner wall of the cylinder as indicated by an arrow, and is supplied to the distal end side air supply conduit 10 and the distal end portion water supply conduit 11, so that both the conduits 10 and 11 are drained.
[0030]
The first embodiment described above has the following effects.
Water supply and washing can be performed reliably.
Other than the switching operation, it is hand-free and can be washed and drained in the pipeline, so it does not take time.
[0031]
Since suction cleaning can be performed at the same time, the cleaning time can be shortened.
Only an air supply pump and a suction pump of a light source used for normal inspection are required, and no special cleaning pump is required.
[0032]
5 and 6 show the second embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted. The difference from the first embodiment is only the difference in the switching operation method of the air / water supply switching valve 29.
[0033]
That is, a gripping convex portion 62 is provided on the head of the bearing 32. A mode switching convex portion 63 is formed on the upper surface of the main body 27. The mode switching convex portion 63 includes a stopper surface 64 against which the guide pin 35 abuts and a concave portion 49 provided on the upper surface. The angle between the stopper surface 64 and the concave portion 49 is 90 °, for example, as shown in FIG. In accordance with this, the positions of the water supply mode index 50 and the air supply mode index 51 are as shown in FIG.
[0034]
Next, the operation of the second embodiment will be described.
After the air / water supply switching valve 29 and the plug body 30 are inserted into each cylinder, the integrated cylinder port gripping portion 26 and the main body 27 are slid laterally, and the guide pin 35 is in contact with the stopper surface 64. FIG. 5 shows the state (water supply mode) shown in FIG. 3 in the first embodiment. The state of each pipeline at this time is also the same as in FIG.
[0035]
From this state, the gripping convex portion 62 is gripped with a finger, pulled upward, and then rotated 90 ° to fit the guide pin 35 into the concave portion 49 as shown in FIG. This state is the state of FIG. 4 (air supply mode) in the first embodiment, and the state of each pipeline at this time is also the same as FIG. That is, the difference in operation in which the air / water supply switching valve 29 is once pulled upward and then rotated 90 ° to switch to the air supply mode is different from that of the first embodiment.
[0036]
The effect of the second embodiment is the same as that of the first embodiment. However, in terms of the outer shape, the slide overall length can be made shorter than in the first embodiment, so that the size can be slightly reduced.
FIG. 7 shows a third embodiment, and the same components as those in the first and second embodiments are denoted by the same reference numerals and description thereof is omitted. In this embodiment, the mode switching convex portion 63 of the second embodiment is separated from the main body 27. (A) is a water supply mode and (b) is an air supply mode.
[0037]
The thickness of the mode switching plate 65 is, for example, l in FIG. There is a water supply mode indicator 50 on the main body 27 side, and an air supply mode indicator 51 is formed on the mode switching plate 65. The mode switching plate 65 and the connecting plate 28 are connected by a chain or the like.
[0038]
The action of the third embodiment is that after pulling up the gripping convex portion 62 provided on the head of the air / water supply switching valve 29, the mode switching plate 65 is inserted between the main body 27 and the guide pin 35. Switch to air supply mode. FIG. 7A shows the water supply state, and FIG. 7B shows the air supply state. The effect is the same as in the first and second embodiments.
[0039]
8 and 9 show a washing waterproof cap 67 attached to the electrical connector portion 66 of the endoscope, and the waterproof cap 67 is connected to the connector portion 4 by a metal chain 69 or the like. Since the waterproof cap 67 is not required during the inspection, it must be hung down or placed on the housing 68 of the video processor or light source 70. Therefore, if there is a leakage current from the internal circuit in the case 68 when the metal chain 69 is in contact with the case 68, the metal chain 69 may flow through the metal chain 69 to the scope exterior metal. For example, there is a method of taking a countermeasure by using a metal chain 69 as an insulating member, but it is very unsightly because there is no place for appearance.
[0040]
FIG. 8 is a side view of the connector portion 4 connected to the light source 70 and is also in a state at the time of inspection. The connector part 4 includes a connection part 71, a connector part main body 72, and a universal side folding prevention part 73, and a waterproof cap mounting member 74 to which the other end of a metal chain 69 having a waterproof cap 67 connected to one end is connected is a connector part. It is sandwiched and fixed between the main body 72 and the bend preventing part 73.
[0041]
9B is a front view, a side view, and a plan view of the waterproof cap attachment member 74, and FIG. 9A is a view as seen from the rear of the connector portion main body 72 to which the waterproof cap attachment member 74 is attached.
[0042]
A waterproof cap storage space 75 is formed on the upper portion of the waterproof cap mounting member 74, and is shaped so as to have a function as the waterproof cap storage space 75 as shown in FIG. 8 only when assembled. That is, precisely, the place where the waterproof cap 67 is placed is formed by the connector portion exterior member 76 of the connector portion main body 72 and the waterproof cap attachment member 74.
[0043]
According to the configuration described above, the size of the waterproof cap mounting member 74 can be reduced. Further, the shape characteristic of the waterproof cap attaching member 74 is substantially T-shaped as shown in FIG. 9B, and the functionally unnecessary portions are eliminated as much as possible. Moreover, also in fixation, it is a non-adhesive fixing structure which only inserts | pinches. A rotation restricting convex portion 77 is formed on the waterproof cap attaching member 74 side, and a rotation restricting concave portion 78 is formed on the connector portion main body 72 side. As a result, the washing and draining drying properties are good.
[0044]
According to the embodiment described above, the following configuration is obtained.
(Additional remark 1) In order to wash the inside of the fluid line of the endoscope in which a plurality of cylinders connected in the middle of the fluid line are arranged in the operation unit and the line operation valve is detachable from the outside to the cylinder In the endoscope line cleaning device for sealing the cylinder opening from the outside after removing the pipe operation valve, the connector side water supply pipe in the air / water supply cylinder with the suction cylinder opening sealed Provide means for selectively connecting the tip-side air supply conduit, tip-end-side water supply conduit, and connector-side air-supply conduit to the tip-side air-feed conduit and tip-end-side water supply conduit and maintaining each state. Endoscope pipe cleaning apparatus characterized by that.
[0045]
(Appendix 2) At least the first state in which the connector side water supply conduit and the tip end side water supply conduit communicate with each other in the insertion portion and the second state in which at least the connector side air supply conduit and the tip end side air supply conduit communicate with each other are maintained The endoscope pipe cleaning apparatus according to appendix 1, characterized in that a means capable of performing the same is provided.
[0046]
(Supplementary note 3) The endoscope tube according to supplementary note 1, wherein means for switching between the first state and the second state in the operation portion are integrally provided in a cylinder port gripping portion locked to the cylinder portion. Road washing device.
[0047]
On the other hand, in the bending tube portion of the endoscope, the cylindrical blade fitted on the outer periphery of the bending piece is detachably fixed at both ends of the bending tube portion as shown in JP-A-4-357211, and the blade portion. An endoscope in which only a pair can be exchanged has been proposed.
[0048]
However, the mounting members provided at both ends of the conventional detachable blade part set have an inner diameter smaller than the outer diameter of the tip cover firmly fixed to the tip body. Furthermore, there are some which are smaller than the maximum outer diameter of the tip body. In the latter case, a step is provided on the tip body, and a mounting member is fixed to a surface portion having a low step.
[0049]
When removing the blade assembly, if the mounting member has an inner diameter smaller than that of the tip cover, the tip cover must be removed and the blade assembly must be removed after breaking the tip cover. . On the other hand, in the case of a mounting member having an inner diameter smaller than the maximum outer diameter of the tip body, it cannot be removed from the tip unless the blade cover is broken even if the tip cover is removed.
[0050]
In the present disclosure, the blade assembly can be easily disassembled so that it can be removed from the distal end side of the insertion portion, and the assembly of the blade assembly is easy, improving repairability and reducing repair costs. It is designed to be able to plan.
[0051]
10 and 11 show a first disclosed example. As shown in FIG. 11, a locking member 80 is fixed to the inside of the blade 79 on the tip side. The fixing means may be anything such as solder, adhesion, screw fixing, and caulking. FIG. 6A shows a state in which the blade 79 is in a natural state, and FIG. 6B shows a state in which the blade 79 is contracted in the axial direction so that the inner diameter φB satisfies φB> φA.
[0052]
FIG. 10A shows a state in which the blade with the locking member is in the state shown in FIG. 11B and is passed through the distal end portion side with the distal end cover 82 being fixed to the distal end portion main body 81 so that the locking member 80 is moved. The curved first piece 83 is fitted and fixed in a notch recess 84 provided on the outer periphery.
[0053]
A specific fixing method is as follows. First, after the locking member 80 is cut and fitted into the notch 84, a silicon-based adhesive is applied to the locking member 80 in the vicinity or all around the heat shrinkage indicated by a two-dot chain line. It heat-shrinks with the tube 85, and the adhesive is dried in that state. After drying, the heat-shrinkable tube 85 is cut and removed, and then the curved rubber 86 is covered.
[0054]
FIG.10 (b) is sectional drawing which follows the BB line of Fig.10 (a). The locking member 80 is fitted in the notch recess 84 so as not to protrude from the outer diameter of the curved first piece 83. The bending operation wire 87 and the bending first piece 83 are fixed by brazing at the notch recess 84.
[0055]
According to the first disclosed example, when removing the blade 79 when an abnormality occurs in the blade 79 for some reason, the adhesive applied in the vicinity of the locking member 80 is removed after removing the curved rubber 86. After removal, the locking member 80 is removed from the notch recess 84. Thereafter, the blade 79 is inflated so that the inner diameter passes through the tip cover 82 as shown in FIG.
[0056]
According to the first disclosed example, the blade 79 can be detached and attached from the tip side without destroying or removing the tip cover 82, so that the repairability is good. In addition, repair costs can be reduced. Since the space of the notch is used, the axial direction and the rotational direction can be regulated without increasing the diameter. In addition, since the locking member 80 is not ring-shaped, the degree of freedom when the locking member 80 passes the outer periphery of the tip cover 82 is large, and is particularly effective for an endoscope having a deformed cross section.
[0057]
FIG. 12 shows a second disclosed example and relates to a structure for fixing the air / water supply nozzle 6 of the tip structure portion 5. The inner and outer diameters of the air / water supply nozzle 6 are decentered, a notch 89 is provided in the thickened portion, and a fixing member 90 is applied to the notch 89 to attach the air / water supply nozzle 6 to the tip cover 82. It is fixed to. According to the second disclosed example, the air / water nozzle 6 can be fixed and stopped by simple processing.
[0058]
FIG. 13 shows a third disclosed example and relates to a structure for fixing the air / water supply nozzle 6 of the tip structure portion 5. An elastic member 91 is outserted on the outer surface of the air / water feeding nozzle 6, and is pressed into the tip cover 82 or the tip portion main body 81. Note that the outer surface of the elastic member 91 may be further provided with an unevenness to provide a hook. According to the third disclosed example, the air / water supply nozzle 6 is unlikely to be detached at the time of inspection, and the repairability is very good.
[0059]
14 and 15 show a fourth disclosed example, which shows a structure in which a part of the tip cover 82 is extended and the tip cover 82 is fixed to the tip body 81 with a thread of a curved rubber 86. FIG. . Conventionally, as shown in FIG. 14, an extension portion 93 having a tapered surface 92 whose diameter decreases toward the rear end is provided at the rear end portion of the tip cover 82. A curved rubber 86 was wound on the top. However, since the bobbin is wound on the tapered surface 92 whose diameter decreases toward the rear end, stress that pushes the front end cover 82 toward the front end is always applied. There was a possibility of peeling and causing water leakage.
[0060]
FIG. 15A shows a taper surface 92 with a diameter increasing toward the rear end, and FIG. 15B shows a case where a groove 94 is provided on the outer periphery of the extension portion 93. Therefore, both can reduce the stress in the peeling direction applied to the tip cover 82.
[0061]
16 to 18 show a fifth disclosed example, and FIGS. 16 and 17 show the structure of a detachable tip cover 95 with a nozzle. 16 and FIG. 17, the tip cover is composed of two bodies, one is the tip cover with nozzle 95 and the other is a fixed tip cover 96. Both are made of electrically insulating resin.
[0062]
As shown in FIG. 17, the fixed tip cover 96 is installed and fixed to the tip body 81 with a fixing pin 97 and fixedly adhered thereto. A substantially H-shaped convex portion 98 is formed on the outer periphery of the fixed tip cover 96, for example, as shown in FIG. Further, as shown in FIGS. 16 and 17, a slide groove 99 extending in the axial direction of the insertion portion 1 is formed on the outer periphery of the fixed tip cover 96.
[0063]
Further, an observation window 100, an illumination window 101, and a suction port 7 are provided on the distal end side end face of the fixed tip cover 96. A seal member 103 is disposed around the opening of the air supply / water supply opening 102 of the tip main body 81 so as to be sandwiched between the tip main body 81 and the fixed tip cover 96, and the tip surface of the seal member 103 is on the surface. Exposed.
[0064]
In a state where the tip cover 95 with nozzle is attached to the fixed tip cover 96, the entire back surface of the nozzle portion 105 of the tip cover 95 with nozzle except the nozzle opening 106 is firmly and watertight with the tip surface of the seal member 103. It is in close contact.
[0065]
FIG. 18 is a perspective view of the tip cover 95 with a nozzle. A T-shaped slit 107 is formed on the side surface, and a positioning projection 108 extending in the axial direction is provided on the inner surface. As the mounting method, the positioning convex portion 108 is inserted in accordance with the slide groove 99, and the H-shaped convex portion 98 is fitted and fixed to the T-shaped slit 107. Since the shape of the H-shaped convex portion 98 is H-shaped, the rotation and the axial direction can be regulated. When removing, a screwdriver or the like is inserted into the removal recess 109 provided in the H-shaped projection 98, and the fixing portion 110 of the tip cover 95 with nozzle is bent and broken and removed.
[0066]
According to the fifth disclosed example, since the seal member 103 is provided on the scope main body side, the nozzle portion back surface 105 is surely sealed even if the tip cover 95 with the nozzle is attached somewhat roughly. Leakage does not occur, and there is little influence on air supply and water supply. Further, since a seal member is not necessary on the side of the tip cover 95 with nozzle, the cost can be reduced.
[0067]
FIG. 19 shows a sixth disclosed example and relates to a method of fixing the blade 79 of the curved portion. Both ends of the blade 79 are extended under the bobbin adhering portion 111 of the curved rubber 86, and the braided adhering portion 111 also serves to fix the blade 79. According to the sixth disclosed example, the blade 79 can be easily replaced, and the outer diameter of the fixing portion does not increase. In order to further improve the assemblability, the curving rubber 86 may be covered after thread fixing for temporary fixing at both ends of the blade 79, and then wound and bonded.
[0068]
20 and 21 show a seventh disclosed example, and FIGS. 20 and 21 relate to a sliding tube for straightening the intestinal tract in the lower digestive tract. In the past, the intestinal wall was sandwiched between the scope and the sliding tube, and there was a risk of injury. 20 and 21 are intended to provide a safe sliding tube that does not damage the intestinal wall.
[0069]
As shown in FIG. 20, an insertion assisting tube 114 is interposed between the insertion portion 1 of the scope and the sliding tube 112, and one end thereof is fixed to the patient near the anal entrance. When the sliding tube 112 is inserted along the insertion portion 1, the insertion assisting tube 114 moves in the direction of the arrow, so that the intestinal wall is not caught at the distal end portion of the sliding tube 112.
[0070]
In addition, as shown in FIG. 21, a watertight portion 115 is provided on the proximal side of the sliding tube 112 to make the space between the insertion portion 1 watertight, and air supply is performed between the sliding tube 112 and the insertion portion 1. Means are provided. The air is always sent from between the sliding tube 112 and the insertion portion 1 to prevent the sliding tube 112 from being caught at the tip portion. Arrows indicate air flow.
[0071]
According to each of the disclosed examples, the configuration is obtained as follows.
(Supplementary note 4) The insertion portion has a tip constituent portion and a curved tube portion formed by fitting a blade on the outer periphery of a plurality of bending pieces that are located on the proximal side of the tip constituent portion and are tiltably connected. In the endoscope in which a concave portion for fixing a bending operation wire is provided on the outer periphery of the bending end of the bending piece, at least one locking member is fixed on the inner side of the blade on the tip side, and the locking member is An endoscope characterized by being engaged with a concave portion for fixing a bending operation wire from the outside.
[0072]
According to the above configuration, even when the blade is broken or the tip cover is fixed to the tip portion main body, the blade can be easily removed from the endoscope tip portion side without removing the tip cover. It is also possible to easily assemble by inserting a new blade part set.
[0073]
【The invention's effect】
As described above, according to the present invention, water washing can be performed reliably. Other than the switching operation, hands-free washing and draining are possible, so it does not take time.
In addition, since the suction cleaning can be performed at the same time, the total cleaning time can be shortened.
Only an air supply pump and a suction pump of a light source used for normal inspection are required, and a special cleaning pump is not necessary.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an endoscope showing a first embodiment of the present invention.
2A is a plan view, FIG. 2B is a side view, FIG. 2C is a cross-sectional view taken along the line AA, and FIG. 2D is a bottom view.
3A and 3B show a cylinder portion of the same embodiment, in which FIG. 3A is a plan view, and FIG. 3B is a longitudinal side view.
4A and 4B show a cylinder portion of the same embodiment, in which FIG. 4A is a plan view, and FIG. 4B is a longitudinal side view.
5A and 5B show a cylinder portion according to a second embodiment of the present invention, in which FIG. 5A is a plan view and FIG. 5B is a longitudinal side view.
6A and 6B show a cylinder portion of the embodiment, wherein FIG. 6A is a plan view and FIG. 6B is a longitudinal side view.
7A and 7B show a cylinder portion according to a third embodiment of the present invention, where FIG. 7A is a water supply mode, and FIG. 7B is a plan view of an air supply mode.
FIG. 8 is a partially cutaway side view of a connector portion showing a fourth embodiment of the present invention.
9A is a rear view of the waterproof cap mounting member according to the embodiment; FIG. 9B is a front view, a side view, and a plan view of the waterproof cap mounting member;
FIGS. 10A and 10B show a first disclosed example, in which FIG. 10A is a longitudinal side view of a blade, and FIG. 10B is a cross-sectional view taken along line BB.
11A is a front view and a side view of the blade in a natural state, and FIG. 11B is a front view and a side view of the blade compressed in the axial direction.
FIGS. 12A and 12B show an air / water supply nozzle according to a second disclosed example, wherein FIG. 12A is a longitudinal side view, and FIG. 12B is a cross-sectional view taken along line CC.
FIG. 13 is a longitudinal side view showing an air / water supply nozzle according to a third disclosed example.
FIG. 14 is a longitudinal side view of a tip body showing a fourth disclosed example.
FIG. 15 is a vertical side view of the tip body of the disclosed example.
16A and 16B show a tip cover with a nozzle according to a fifth disclosed example, wherein FIG. 16A is a front view of the tip body, FIG. 16B is a view seen from the direction of arrow D, and FIG. Sectional drawing.
FIG. 17 is a transverse cross-sectional view showing a mounting state of the tip cover with nozzle of the disclosed example.
FIG. 18 is a perspective view of a tip cover with a nozzle according to the disclosed example.
FIG. 19 is a longitudinal side view of a bending portion of an endoscope showing a sixth disclosed example.
FIG. 20 is a view showing the state of use of the sliding tube of the seventh disclosed example.
FIG. 21 is a diagram showing a usage state of the sliding tube of the disclosed example.
FIG. 22 is an overall configuration diagram of a conventional endoscope pipe cleaning apparatus.
FIG. 23 is an overall configuration diagram of a conventional endoscope pipe cleaning apparatus.
[Explanation of symbols]
2 ... Operation part
8 ... Air / water cylinder
9 ... Suction cylinder
10 ... tip side air supply line
11 ... Tip side water supply pipeline
18 ... Connector side air supply line
19 ... Connector side water supply pipeline

Claims (1)

At least an air / water supply cylinder and a suction cylinder connected in the middle of the fluid conduit are arranged in parallel in the operation portion of the endoscope, and a conduit operation valve provided detachably with respect to each cylinder is provided with the fluid pipe. In the endoscope pipe cleaning device for sealing the opening of each cylinder after removing to clean the road,
In the washing apparatus main body, a plug body for sealing the opening of the suction cylinder and an air / water supply switching valve mounted on the air / water supply cylinder are provided,
The air / water supply switching valve is configured such that the connector-side water supply line in the air / water supply cylinder is moved forward and backward in the axial direction with respect to the air / water supply cylinder, the tip side air supply line, the tip side water supply line, and the connector side air supply line Can be selectively communicated with the tip-side air supply conduit and the tip-side water supply conduit, and the washing apparatus body engages with the air-supply / water supply switching valve when the air-supply / water-supply switching valve moves forward and backward. An endoscope pipe cleaning device characterized in that an engaging portion for holding the state is sometimes provided integrally or separately .

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