JPH09313431A - Endoscope cleaning instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning instrument for endoscope, which has fast response in the water delivering and sucking operations, etc., to the tip of the endoscope and which allows easy taking around. SOLUTION: A cover fitting 30 having a fixing means capable of mounting and removing a syringe 37 as a supply source or suction motive of a washing medium is installed removably on the body 1 of an endoscope, and the injection port 40 of the syringe 37 is made connectable with a fluid supply hole 23. According to this configuration, the connections can be established with no use of connecting tube, so that it is possible to generate a fast response in the water delivering and sucking operations, etc., to the tip of the endoscope, facilitate moving around, and enhance handling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cleaning the distal end window of an endoscope without removing the endoscope from the patient's body when performing diagnosis or surgery under observation with the endoscope. The present invention relates to a cleaning tool for an endoscope.

[0002]

2. Description of the Related Art A cleaning tool for an endoscope is an actual open flat 6-0815.
As disclosed in Japanese Patent Publication No. 01-Gazette, a gap formed between an inner diameter portion of a tubular portion covering the insertion portion of the endoscope from a proximal end side to a distal end side and an outer diameter portion of the endoscope insertion portion is used. Then, water is supplied from the base end side of the insertion portion to clean the window portion of the distal end portion of the endoscope. Then, a switching box that arbitrarily switches between the liquid feed pump connected to the liquid feed source and the suction pump is connected to a fluid supply port at the proximal end of the insertion portion via a connection tube.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The endoscope cleaning tool described in Japanese Patent No. 81501 has the following problems. That is, when performing liquid transfer or suction, the switching box and the fluid supply port of the endoscope are connected with a connection tube.However, if the length of this connection tube is shortened, the movement of the operating unit will be changed by the connection tube. It is limited and difficult to operate. In addition, if the length of the connection tube is increased, it takes a long time for the fluid to reach the fluid supply port after the switching box is switched to the liquid feeding side. Further, there is a problem that the connection tube itself becomes an obstacle and the handling becomes complicated.

The present invention has been made in view of the above problems, and has a quick response such as water supply and suction to the distal end of the endoscope.
Moreover, it is an object of the present invention to provide an endoscope cleaning tool that is easy to handle.

[0005]

The present invention provides an endoscope having an operating portion and an insertion portion, and a base of the insertion portion of the endoscope along the endoscope or inside the endoscope. A cleaning tool for an endoscope having a flow path formed from an end side to a front end side through which a cleaning medium or the like is inserted, and a supply source or a suction source through which the cleaning medium is inserted to supply the cleaning medium. At least one of the operation part of the endoscope and the base end part of the flow path is provided with a fixing means for fixing the supply source or the suction source of the cleaning medium.

As described above, by fixing the supply source or the suction source of the cleaning medium to the operating portion of the endoscope or the proximal end portion of the flow path, it is possible to connect without a connecting tube or with an extremely short connecting tube. Therefore, the response of water supply, suction, etc. at the distal end of the endoscope is quick, and the operability can be improved.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

(Structure) FIGS. 1 to 5 relate to a first embodiment of the present invention. FIG. 1 is an explanatory view showing an endoscope main body, and FIG.
(A) is an explanatory view showing the appearance of the insertion part and the fixing part of the cleaning sheath, Fig. 2 (b) is an explanatory view showing the holding part of the cleaning sheath, and Fig. 3 is an explanatory view showing the appearance of the cleaning tool of the syringe. 4 is an explanatory view for explaining the details of the grip cover portion of the endoscope when the cleaning tool is attached to the endoscope, and FIG. 5 is a cross-sectional view showing the finger cap attached to the piston of the syringe.

As shown in FIG. 1, the endoscope body 1 of the first embodiment comprises an elongated insertion portion 2 and a large diameter operation portion 3.

A tip portion 5 that houses the objective lens 4 is provided on the tip end side of the insertion portion 2, and a bending portion 6 that can be arbitrarily bent in the vertical and horizontal directions is provided on the base end side thereof. A long and hard rigid portion 7 is successively provided. The operation part 3 is connected to the base end of the rigid part 7.
A fixed ring 8 is installed at a continuous portion between the insertion portion 2 and the insertion portion 2. A cylindrical positioning pin 9 is fixed to the side surface of the fixed ring 8 in a direction perpendicular to the central axis of the insertion portion 2. At the base end of the fixed ring 8, a grip cover 10 having a diameter larger than that of the fixed ring 8 is provided.
And the operation portion main body 11 having a built-in mechanism for performing the bending operation of the bending portion 6 are continuously provided. An up-down bending lever 12 and a left-right bending lever 13 for bending the bending portion 6 in the up-down direction and the left-right direction are provided on the side surface of the operation portion body 11 so as to be rotatable with respect to the operation portion body 11. .

As shown in FIGS. 2 (a) and 2 (b), the cleaning sheath 14 includes an elongated hollow sheath insertion portion 15 and a cleaning sheath 14 connected to the proximal end of the sheath insertion portion 15 as an endoscope. The main body 1 includes a fixing portion 16 fixed to the main body 1, and a holding portion 17 detachably attached to the fixing portion 16.

The sheath insertion portion 15 is a sheath that covers the insertion portion 2 of the endoscope body 1, and is provided with a hard tip frame 18 having an opening at the center of the tip surface on the tip side thereof. At the base end of the distal end frame 18, a sheath curved portion 19 made of a flexible tube and a sheath hard portion 20 made of a hard pipe are provided.
And are sequentially connected. A nozzle (not shown) is provided at the tip of the tip frame 18 so that the cleaning liquid is ejected toward the objective lens 4. The inner diameters of the distal end frame 18, the sheath bending portion 19, and the sheath rigid portion 20 are set to be larger than the outer diameter of the insertion portion 2 of the endoscope body 1, and the sheath insertion portion 15 is attached to the endoscope body 1. When they do, they form a space between them.

The fixed portion 16 at the proximal end of the sheath rigid portion 20 is
It is cylindrical so that the fixed ring 8 of the endoscope body 1 can be inserted. A fluid introduction passage 21 communicating with the inner cavity of the fixed portion 16 is provided on the side surface of the fixed portion 16 on the side of the connection portion with the sheath rigid portion 20.
The base 22 containing the is fixed. The base end side of the base 22 is water-tight with an injection port 40 of a syringe 37 described later,
A fluid supply port 23 that can be connected in an airtight manner is opened, and the opening direction is a direction that forms an acute angle with the central axis in the longitudinal direction of the operation unit 3 of the endoscope body 1. On the other hand, the main body side base end of the fixed portion 16 is provided with a groove 24 along its circumferential direction. A flange 25 having a large diameter is provided further on the base end side of the groove 24. A pin groove 26 having a width that allows the positioning pin 9 on the side surface of the fixed ring 8 to be inserted is provided from the end surface of the collar 25 toward the tip end in the axial direction of the fixed portion 16. Pin groove 2
The groove depth of 6 is the endoscope body 1 and the fixed portion 1 as described later.
When the 6 and the sheath insertion portion 15 are fixed, the side surface of the positioning pin 9 is set to a length that does not contact the bottom surface of the pin groove 26.

A sealing member (not shown) is provided in the inner cavity of the fixing portion 16 on the proximal end side, and the fixing ring 8 of the endoscope body 1 is provided.
It is set so as to be watertightly and airtightly connectable between the inner cavity of the fixed portion 16 and the fixed ring 8 when the is attached.

A small-diameter portion is provided between the large-diameter portion of the fixing portion 16 and the collar 25, and a resin having a C-shaped cross section having a width slightly narrower than the axial width of the small-diameter portion. A fixed ring 27 made of a material is attached so as to be rotatable and not to move in the axial direction. The fixing ring 27 is provided with a notch in a part in the circumferential direction, and when the fixing ring 27 is rotated by the elasticity of the pressing piece 28 in this part, the positioning pin 9 is pressed in the distal direction, Endoscope body 1 and fixing part 16
And the sheath insertion portion 15 is set to be fixed.

The holding portion 17 is the grip cover 1 of the endoscope body 1.
It is a cover that covers a part of 0 and can be attached to and detached from the fixed portion 16. At the tip of the holding portion 17, the groove 2 of the fixing portion 16 is provided.
4 is provided with a flange 29 projecting to the inner diameter side that can be engaged with and disengaged from, and a semi-cylindrical cover fit 30 that can be fitted into the grip cover 10 is continuously provided on the base end side thereof. A pressing portion 31 is fixed to the side surface of the cover fitting 30, and an inclined surface 32 that is inclined with respect to the central axis of the cleaning sheath 14 is provided on the other side of the pressing portion 31. This slope 3
The inclination angle of 2 is set to substantially match the angle of the fluid supply port 23 in the opening direction.

As shown in FIG. 3, the syringe 37 is a well-known technique mainly made of a disposable resin, and is composed of a cylinder 38 and a piston 39. The cylinder 38 has a tip to the fluid supply port 23 of the fixing portion 16. The injection port 40 for supplying the cleaning liquid or the like is provided on the hand side with a blade 41 for grasping it with a finger or the like when the piston 39 is pushed in.

As shown in FIGS. 2 and 4, the mounting portion of the syringe 37 is a cylindrical guide pin that is substantially vertical to the inclined surface 32, slightly to the base end side from the central portion of the inclined surface 32 of the holding portion 17. 33 is larger than the outer diameter of the cylinder 38 of the syringe 37,
Two of them are fixed to each other with a slightly short length, with a slightly large gap therebetween, and substantially in parallel with each other so as to be line-symmetric with respect to the central axis of the holding portion 17. Further, the holding portion 17 is attached to the fixed portion 16.
And the injection port 40 of the syringe 37 to the fluid supply port 2
The cylindrical pressing pin 34 for pressing the rear end surface of the blade 41 of the syringe 37 toward the fluid supply port 23 in the state of being attached to the syringe 37 is similar to the guide pin 33 in the outer diameter of the cylinder 38 of the syringe 37. A little shorter than the length of 4
In order to be able to press the rear end face of the one, two pieces are fixed in substantially parallel to each other so as to be line-symmetric with respect to the central axis of the holding portion 17.

(Operation) As shown in FIG. 4, the operator inserts the endoscope body 1 into the fixing portion 16 and the sheath inserting portion 15, and aligns the positioning pin 9 of the endoscope body 1 with the pin groove 26. ,
The grip cover 10 is inserted until the front end surface of the grip cover 10 contacts the fixed portion 16. Next, when the fixing ring 27 is rotated and the pressing piece 28 is locked to the positioning pin 9, the fixing ring 8 of the endoscope body 1 is biased so as to be pushed toward the sheath insertion portion 15, The endoscope body 1 includes the fixed portion 16 and the sheath insertion portion 1.
Securely fixed to 5. At this time, since the inner diameter of the sheath insertion portion 15 is set to be larger than the outer diameter of the insertion portion 2, a gap is created between the two and a flow path is formed.

Next, the flange 29 of the holding portion 17 is fitted into the groove 24 of the fixing portion 16, and the cover fit 30 is attached to the grip cover 10.

After injecting physiological saline into the syringe 37,
The inlet 40 is inserted into the fluid supply port 23, the cylinder 38 is inserted between the two guide pins 33, and the blade 41 is elastically deformed and fixed by the pressing pin 34. In this state, the syringe 37 is fixed at an acute angle along the inclination angle of the inclined surface 32.

Since the length of the syringe 37 at the position where the piston 39 is most pushed into the cylinder 38 is set to be substantially the same as the length of the grip cover 10 of the endoscope body 1, the syringe 37 is pressed by the pressing portion 31. When fixed to
The base end portion of the piston 39 is located closer to the tip side than the positions of the up / down bending lever 12 and the left / right bending lever 13 of the operation portion body 11, and conversely, when the piston 39 is most pulled out from the cylinder 38, the up / down bending lever 12 is located. , On the proximal side from the position of the left and right bending lever 13. Therefore, the movement range of the base end portion of the piston 39 moves back and forth in the vicinity of the vertical bending lever 12 and the horizontal bending lever 13 of the operation portion main body 11.

The endoscope main body 1 mounted as described above is inserted into the body cavity. Then, when dirt is attached to the objective lens 4 during a surgical operation under endoscopic observation, the physiological saline in the syringe 37 is pushed by pushing the piston 39 of the syringe 37, and the injection port 40 and the fluid supply port 23. , Fluid introduction path 2
1 sequentially, and then flows into the flow path between the sheath insertion portion 15 and the insertion portion 2. Here, since the base end side of the flow path is watertightly and airtightly sealed by a sealing member (not shown),
The physiological saline moves to the tip of the insertion part 2, and the objective lens 4
Wash off the dirt that has adhered to.

After the water is fed, the piston 39 of the syringe 37 is pulled out, so that the water droplets on the objective lens 4 follow the flow path opposite to that at the time of the water feeding and are sucked. Alternatively, instead of suction, a gas such as air may be sent from the syringe 37 to blow off the water droplets attached to the objective lens 4.

When the physiological saline in the syringe 37 is used up, the syringe 37 may be temporarily removed from the cleaning sheath 14 and replenished appropriately.

(Effect) In the present embodiment configured as described above, since the syringe 37 as the water supply source, suction source or air supply source of the fluid supply port 23 is directly attached to the cleaning sheath 14, the intermediate Not only does the connection tube become unnecessary, but the operation of supplying the cleaning medium such as physiological saline to the tip of the endoscope body 1 or removing it immediately by operating the syringe 37 can be performed with a quick response.

Further, as described above, since the connecting tubes in the middle are unnecessary, it is easy to handle the endoscope body 1,
The operability is improved without disturbing the connection tube when moving. Furthermore, as a supply and removal source of the cleaning medium,
Since the commercially available disposable syringe 37 is used to be detachable, it is inexpensive, does not require cleaning, and is easy to maintain.

Further, since the base end portion of the piston 39 of the syringe 37 moves in the vicinity of the vertical bending lever 12 and the horizontal bending lever 13 of the operation portion 3 of the endoscope body 1, even when the objective lens 4 is washed, The operability is remarkably improved because it can be operated without significantly moving the finger.

In the first embodiment, the syringe 3
The blade 41 of 7 is elastically deformed to urge the pressing pin 34,
Although an example of fixing is shown, the pressing pin 34 itself or the pressing portion 31 that is the mounting portion of the pressing pin 34 may be made of an elastic member and fixed by the biasing force thereof.

Although the commercially available product is used as the syringe 37 as it is, for example, as shown in FIG. 5, a flange 43 for attaching to the base end of the piston 39 and a finger hook 44 into which a finger can be inserted are provided. You may make it attach the finger cap 45 formed with the elastic member of silicone rubber etc. which have. In this way, the operation of pushing in or pulling out the piston 39 can be carried out with one finger via the finger cap 45, and the operability is further improved. The finger cap 45
Since is formed of an elastic member, it can be easily attached to and detached from the base end portion of the piston 39. Therefore, it is easy to wash and can be used repeatedly.

<Second Embodiment> (Structure) FIG. 6 is an explanatory view showing a state in which a cleaning tool is attached to an endoscope according to a second embodiment of the present invention.

In the second embodiment, as the cleaning means, a cartridge containing a fluid such as high-pressure carbon dioxide is used instead of the syringe 37, and the flow path of the cleaning liquid is set to the insertion portion of the endoscope body 1. Except for the point that it is a configuration provided in 2,
This is the same as the first embodiment. The same configurations and operations as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The cleaning tool according to the second embodiment has an endoscope main body 51.
And a fluid cartridge 57.

As in the first embodiment, the insertion portion 52 of the endoscope main body 51 is composed of a distal end portion 5 which houses the objective lens 4, a bending portion 6 and a rigid portion 7. A channel 53, which is a flow path through which the cleaning medium is inserted, is provided inside the insertion portion 52. A nozzle (not shown) that opens in the direction of the objective lens 4 is provided at the tip of the channel 53, and the cleaning medium that has passed through the channel 53 is jetted toward the surface of the objective lens 4 so that the objective lens 4
The tip is cleaned.

On the other hand, the base end side of the channel 53 communicates with the fluid introduction passage 21 and the fluid supply port 23 provided inside the cylindrical base 22 fixed to the base end of the insertion portion 52.

The grip cover 10 of the operation portion 3 is provided with a cartridge holding portion 54 for holding and fixing a cartridge body 58, which will be described later, and a cartridge stopper 55. The cartridge holding portion 54 has a C-shaped cross section having an inner diameter slightly smaller than the outer diameter of the cartridge body 58.
Since it is made of an elastic member such as resin, when the fluid cartridge 57 is inserted into the C-shaped inner diameter of the cartridge holding portion 54 from the left side of FIG. 6, the cartridge body 58 is held so as to be sandwiched. Further, the cartridge stopper 55 is
It is set so as to engage with the bottom surface of the cartridge body 58, and the cartridge holding portion 54 holds and fixes the fluid cartridge 57 while the axial position is regulated by the cartridge stopper 55.

The fluid cartridge 57 is, for example, a cylindrical cartridge body 5 containing a fluid such as high-pressure carbon dioxide.
8 and a valve 60 having an injection port 59 at the tip thereof.
The inside of the cartridge main body 58 and the ejection port 59 are set to communicate with each other only while being pressed in the cylinder axis direction.

The injection port 59 and the fluid supply port 23 on the insertion portion 52 side are watertightly and airtightly connected to each other via a relatively short tube 61.

(Operation) As shown in FIG. 6, while the bottom surface of the cartridge body 58 is pressed against the cartridge stopper 55, the fluid cartridge 57 is moved to the cartridge holding portion 5.
Insert into 4. The elastic force of the cartridge holding portion 54 urges the cartridge body 58 to fix the fluid cartridge 57 to the grip cover 10 of the endoscope body 51. Next, the tube 61 of the fluid cartridge 57 is connected to the fluid supply port 23.

The endoscope main body 51 mounted as described above is inserted into the body cavity. When dirt is attached to the objective lens 4 during a surgical operation under endoscopic observation, the valve 60 of the fluid cartridge 57 is pushed to cause the high-pressure fluid inside the cartridge main body 58 to eject the injection port 59 and the tube 6.
1, fluid supply port 23, fluid introduction path 21 and channel 5
3 is sequentially inserted and blown toward the objective lens 4, and the dirt adhering to the objective lens 4 is blown off.

(Effect) In the present embodiment configured as described above, since the fluid supply port 23 and the ejection port 59 of the fluid cartridge 57 are connected by the short tube 61, the valve 60 is pushed. Since the cleaning medium can be supplied to the objective lens 4 at the tip of the endoscope main body 51 almost at the same time, cleaning with a quick response becomes possible.

Further, as described above, since the intermediate connecting tube is short and the cartridge main body 58 is fixed to the operation portion 3, the endoscope main body 1 can be easily handled and connected when it is moved. The operability is improved without the tube getting in the way.

Furthermore, since the fluid cartridge 57 is a commercially available disposable product, maintenance is unnecessary. Further, since one fluid cartridge 57 stores a large amount of washing medium, it is not necessary to replenish the washing medium during the operation, and even if it is replenished, the fluid cartridge 57 can be replaced in a short time.

Further, the valve 60 of the fluid cartridge 57
Since the position is in the vicinity of the operation unit 3 of the endoscope main body 51, it can be operated without significantly moving the finger even when washing, so that the operability is significantly improved.

In each of the embodiments described above,
Any combination is possible without departing from the spirit of the present invention.

[Appendix] As described in detail above, according to the embodiment of the present invention, the following configuration can be obtained.
That is, [Supplementary Note 1] an endoscope having an operation portion and an insertion portion, and along the endoscope or inside the endoscope, from the proximal end side to the distal end side of the insertion portion of the endoscope. A cleaning tool for an endoscope having a flow path through which the formed cleaning medium or the like is inserted, and a supply source or a suction source through which the flow path is supplied to supply the cleaning medium, wherein the operation unit of the endoscope or the A cleaning tool for an endoscope, wherein fixing means for fixing a supply source or a suction source of a cleaning medium is provided on at least one of the base ends of the flow path.

[Supplementary Note 2] An endoscope having an operation portion and an insertion portion, a tubular portion covering the insertion portion of the endoscope from the proximal end side to the distal end side, the inside of the tubular portion and the endoscope. In the cleaning tool for an endoscope, which has a flow path formed between the outside of the insertion part and through which a cleaning medium or the like is inserted, and a supply source or a suction source through which the cleaning medium is inserted to supply the cleaning medium, A cleaning tool for an endoscope, wherein fixing means for fixing the supply source or the suction source of the cleaning medium is provided on at least one of the operation part of the endoscope and the base end part of the flow path.

[Supplementary Note 3] The endoscope cleaning tool according to Supplementary Note 2, wherein the tubular portion is a cleaning sheath.

[Supplementary Note 4] In the endoscope cleaning tool according to Supplementary Note 1, the flow path is a channel formed in the insertion portion of the endoscope.

[Supplementary Note 5] The endoscope cleaning tool according to Supplementary Notes 1 to 4, wherein the supply source or the suction source is
It is a syringe.

[Supplementary Note 6] The endoscope cleaning tool according to Supplementary Notes 1 to 4, wherein the supply source or the suction source is
It is a fluid cartridge.

[Supplementary Note 7] In the endoscope cleaning tool according to Supplementary Notes 1 to 4, the fixing means and the supply source or the suction source are detachable.

[Supplementary Note 8] The endoscope cleaning tool according to Supplementary Notes 1 to 4, wherein the central axis of the supply source or the suction source and the central axis of the endoscope operation section in the longitudinal direction. The angle between and is an acute angle.

[Supplementary Note 9] The endoscope cleaning tool according to Supplementary Notes 1 to 4, wherein the actuation operation portion of the supply source or the suction source is provided in the endoscope operation portion. It was placed near the lever.

[0055]

As described above, according to the endoscope cleaning tool of the present invention, the cleaning medium supply source or suction source is
Since the endoscope or the cleaning medium is provided in the vicinity of the proximal end of the flow path of the cleaning medium, after the operation, the cleaning medium is quickly supplied and sucked to the objective lens portion at the distal end of the endoscope, and the response is quick. Further, since the connection tube is unnecessary or the length can be shortened, it is possible to supply the endoscope cleaning tool which is easy to handle around the operation portion and has good operability.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an endoscope main body according to a first embodiment of the present invention.

FIG. 2 relates to a first embodiment of the present invention, and FIG.
FIG. 2A is an explanatory view showing appearances of an insertion portion and a fixing portion of the cleaning sheath, and FIG. 2B is an explanatory view showing a holding portion of the cleaning sheath.

FIG. 3 is an explanatory diagram showing an external view of a syringe cleaning tool according to the first embodiment of the present invention.

FIG. 4 relates to the first embodiment of the present invention and is an explanatory diagram showing details of a grip cover portion of the endoscope with a cleaning tool attached to the endoscope.

FIG. 5 is a cross-sectional view showing a finger cap attached to a piston of a syringe according to the first embodiment of the present invention.

FIG. 6 is an explanatory view showing a state in which a cleaning tool is attached to the endoscope according to the second embodiment of the present invention.

[Explanation of symbols]

 1, 51 Endoscope body 2, 52 Insertion part 3 Operation part 4 Objective lens 5 Tip part 10 Grip cover 11 Operation part body 15 Sheath insertion part 16 Fixing part 17 / Holding part 21 Fluid introduction path 23 Fluid supply port 31 Pressing part 37 Syringe 53 Channel 58 Cartridge body 60 Valve 61 Tube

Claims (1)

[Claims] 1. An endoscope having an operation portion and an insertion portion, and formed along the endoscope or inside the endoscope from a proximal end side to a distal end side of the insertion portion of the endoscope. A cleaning tool for an endoscope having a flow path through which the cleaning medium and the like are inserted, and a supply source or a suction source through which the cleaning medium is inserted to supply the cleaning medium. A cleaning tool for an endoscope, characterized in that fixing means for fixing a supply source or a suction source of a cleaning medium is provided on at least one of the base ends of the passage.