JP2013111446A - Washing adapter for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely wash and disinfect all parts without forming parts not to be in contact with a liquid chemical at all inside a conduit inside an endoscope and inside a mouth ring fixed to an entrance of the conduit inside the endoscope.SOLUTION: A washing adapter 2 for an endoscope is used by being mounted on a mouth ring 24A fixed to the entrance of the conduit inside the endoscope, and a guide pipe 58 inserted to the inside of the mouth ring 24A is vertically moved according to the pressure fluctuation of a washing liquid. A thick diameter part 58BG in a truncated conical shape whose outer diameter is reduced on a lower end side is provided on a lower end part of the guide pipe 58, and the outer peripheral surface of the thick diameter part 58BG is close to the inner wall of the mouth ring 24A. The thick diameter part 58BG is provided with a main stream exit 58BH for discharging the washing liquid that flows in toward the center of the mouth ring 24A, and a shunt exit 58BI for discharging the washing liquid toward an upper part.

Description

  According to the present invention, when cleaning and disinfecting a pipe line inside an endoscope, the gap is fixed between a base fixed to the inlet of the pipe line inside the endoscope and a fluid supply pipe line of a cleaning device to which cleaning liquid is sent. The present invention relates to an endoscope cleaning adapter to be connected.

  An endoscope is known as a medical device used for examination and treatment in a body cavity of a patient. In the endoscope after use, body fluid and dirt are attached to the outer peripheral surface of the insertion portion inserted into the body cavity and in each channel. Since pathogenic bacteria and viruses contained in these body fluids and filths cause nosocomial infections, endoscopes after use are always cleaned and disinfected.

  When cleaning and disinfecting used endoscopes, the endoscope cleaning device must clean not only the surface of the endoscope but also each internal pipe to remove dirt. Don't be. For this reason, it was fixed to the fluid supply conduit of the cleaning device to which the cleaning liquid is sent, and the inlet of each channel (pipe) such as an air / water supply channel or forceps channel disposed inside the endoscope. A cleaning adapter is required to connect the base.

  The cleaning adapter is provided with an insertion part that is detachably inserted into the base so that the chemical solution such as the cleaning liquid can surely enter the conduit inside the endoscope. The gap between the inner wall and the inner wall is narrow, making it difficult for liquid to pass through. Since it is difficult for the liquid to pass through, there is a concern that a cleaning liquid, a chemical liquid, or a phenomenon in which disinfection becomes insufficient occurs only in this portion.

  For example, the cleaning adapter described in Patent Document 1 below includes a connector part that is detachably loosely fitted to a base communicating with a pipe line inside an endoscope, and a fluid feeding pressure of a fluid provided in the connector part. A valve body that moves forward, a biasing member that is provided in the connector portion and biases the valve body, and a flange that moves forward together with the valve body by the fluid supply pressure of the fluid that is provided in the valve body and that is provided at the tip of the base A seal body closely contacting the portion, and an insertion portion provided in the connector portion and inserted into the base. The liquid feeding pressure changes as the cleaning device controls the flow rate, and the valve body moves in the axial direction accordingly. When the seal body comes into close contact with the flange, the fluid flows only in the base. When the seal body leaves the flange, fluid leaks into the gap between the seal body and the flange, and the outer peripheral surface of the connector can be cleaned. Yes.

JP 2009-195400 A

  However, the cleaning adapter disclosed in Patent Document 1 has a valve structure in which the gap between the outer peripheral surface of the insertion portion and the inner wall of the base is narrow and liquid cannot easily pass through the inner wall of the base. That is, there is a problem in that all the locations in the mouthpiece and in the duct inside the endoscope cannot be cleaned by the cleaning adapter of Patent Document 1.

  The present invention has been made in view of the above-mentioned problems, and the object thereof is to eliminate the places where the chemical solution is not touched at all in the cap and the pipe line inside the endoscope, and all the places are surely secured. An object of the present invention is to provide an endoscope cleaning adapter that can be cleaned and disinfected.

  In order to achieve the above object, an endoscope cleaning adapter according to the present invention is used by being attached to a base fixed to an inlet of a pipe line inside an endoscope, and a cleaning liquid is passed through the base into the pipe line. In the endoscope cleaning adapter to be introduced, an injection port through which a cleaning liquid is injected is provided, and a substantially cylindrical main body portion in which a hollow portion that communicates with the injection port and penetrates to the bottom surface is formed; and in the hollow portion The upper end is provided with an inlet through which the cleaning liquid flows from the injection port, and the lower end is provided with a main outlet for discharging the flowing cleaning liquid toward the center of the base and the cleaning liquid upward. And a guide pipe into which the lower end portion is inserted into the base, and the guide pipe is urged upward in the hollow portion, and the cleaning liquid flowing in from the injection port is provided. Pressure change Characterized in that and a biasing member for moving up and down the guide pipe in the hollow portion in accordance with the.

  Further, the lower end portion of the guide pipe inserted into the base is provided with a frustoconical large diameter portion whose outer diameter is reduced on the lower end side, and the main outlet is formed on the bottom surface of the large diameter portion, The diversion outlet is formed on the upper surface of the bulging portion. The outer peripheral surface of the large diameter portion is close to the inner wall of the base.

  In addition, a plurality of grooves extending radially about the guide pipe are formed on the bottom surface of the main body portion facing the top surface of the large diameter portion, and the cleaning liquid discharged from the diversion outlet is directed to the outside of the guide pipe. It is done.

  According to the endoscope cleaning adapter of the present invention, it is possible to eliminate a portion that does not come into contact with a chemical solution in the mouthpiece and the pipe line inside the endoscope, and it is possible to reliably clean and disinfect all the portions. it can.

It is the schematic diagram which showed the mode at the time of wash | cleaning the endoscope using the washing | cleaning adapter which concerns on this invention. It is an assembly drawing of the washing | cleaning adapter which concerns on this invention. It is a perspective view of the washing adapter concerning the present invention. It is a perspective view of the adapter main body of embodiment. It is the figure which looked at the 2nd lock member of the washing adapter concerning the present invention from the bottom. It is a perspective view of the guide pipe of an embodiment. It is sectional drawing of the washing | cleaning adapter when there is little or no flow volume which concerns on this invention. It is sectional drawing of the washing | cleaning adapter when there is comparatively much flow volume which concerns on this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  In FIG. 1, an endoscope 10 to which an endoscope cleaning adapter (hereinafter referred to as a cleaning adapter) 2 of the present invention is mounted is equipped with an ultra-small solid-state imaging device (CCD sensor, CMOS sensor, etc.) at the tip. This is an electronic endoscope. The endoscope 10 includes a solid-state imaging device, and is provided with a long insertion portion 11 to be inserted into a digestive tract such as a large intestine, and the insertion portion 11. An operation unit 12 used for operation and a universal cord 13 connected to the operation unit 12 are provided.

  The universal code 13 is a code connected to a processor that processes an imaging signal received from the endoscope 10 and a light source device that inputs illumination light to a light guide inserted in the endoscope 10. At one end of the universal cord 13, a connector 14 connected to the processor and a connector 15 connected to the light source device are provided. Since the connector 14 connected to the processor is provided with a contact portion for obtaining electrical continuity, a waterproof cap is attached at the time of cleaning.

  From the end surface of the connector 15 connected to the light source device, the end portions of the light guide 16 and the air supply connector 17 partially protrude and are exposed. The air supply connector 17 communicates with an air supply / water supply channel disposed inside the insertion portion 11 and the universal cord 13. The light source device is provided with a supply port for compressed air supplied from an air supply pump. When the connector 15 is connected, the end of the air supply connector 17 and the supply port are connected. A water supply connector 18, a suction connector 19, and the like are provided on the side surface of the connector 15.

  The endoscope 10 is provided with conduits such as a forceps channel, a suction channel, and an air / water supply channel. The forceps channel extends from a forceps inlet provided in the operation unit 12 to a forceps outlet provided in the distal end portion 11 </ b> A of the insertion portion 11. The suction channel is shared with the forceps channel from the forceps outlet toward the forceps inlet 24 up to the branch point, and extends from the branch point to the suction connector 19 via a suction control valve provided in the operation unit 12. A suction tank (not shown) is connected to the suction connector 19.

  One end of the air / water supply channel is connected to an air / water supply nozzle provided at the tip of the insertion portion 11 and branches into an air supply channel and a water supply channel on the base end side of the air / water supply nozzle. . The air supply channel and the water supply channel extend to the air supply connector 17 and the water supply connector 18 via an air supply / water supply control valve provided in the operation unit 12, respectively. The air supply connector 17 and the water supply connector 18 are connected to an air supply tank and a water supply tank, respectively. During cleaning and disinfection, the water supply connector 18 is airtightly closed by the cap. Inside the cap, a state in which fluid can flow is maintained between the water supply channel and the branch path.

  In the endoscope 10 configured as described above, in particular, the cleaning adapter 2 is attached to the flange portion 24AF (see FIG. 7) of the base 24A (see FIG. 7) provided in the forceps inlet 24 in order to clean the forceps channel. Is installed. The cleaning adapter 2 according to the present invention is not limited to this, and may be used by being attached to a portion corresponding to the flange portion of the base in order to clean the pipelines such as the suction channel and the air / water supply channel. .

  An endoscope cleaning device (hereinafter referred to as a cleaning device) 30 is connected to the endoscope 10 via a cleaning adapter 2. The cleaning device 30 includes a box-shaped device main body 31. A cleaning tank 32 that houses the used endoscope 10 and is supplied with a cleaning liquid and a disinfecting liquid is provided on the upper portion of the apparatus main body 31. The cleaning tank 32 is a water tank having an open top, and is formed of a metal material having excellent heat resistance, corrosion resistance, etc., such as stainless steel. The apparatus main body 31 is provided with a lid (not shown) that covers the opening of the cleaning tank 32. In addition to the cleaning tank 32 and the lid, the apparatus main body 31 includes an operation panel 33, piping for supplying the cleaning liquid and the disinfecting liquid to the cleaning tank 32, a pump, a solenoid valve, and a tank for storing a detergent and a disinfecting liquid (not shown). Etc.).

  When viewed from above, the inner circumferential shape of the cleaning tank 32 has a substantially circular front portion and a substantially square rear portion. In the center of the front portion, there is disposed a small item cleaning basket 34 that accommodates small components such as a valve member and operation buttons that are detached from the endoscope 10. The endoscope 10 is placed on the washing tank 32 so as to surround the accessory washing basket 34 in a state where the insertion portion 11 and the universal cord 13 are wound.

  Terraces 32 </ b> A and 32 </ b> B that are one step higher than the bottom surface of the cleaning tank 32 are provided in the rear portion of the cleaning tank 32. The terrace portion 32B is provided with a channel cleaning port 40 used for cleaning and disinfecting the forceps channel, the suction channel, and the air / water supply channel. The channel cleaning port 40 is a fluid supply port that supplies fluid such as cleaning liquid, disinfecting liquid, alcohol, and compressed air to various channels of the endoscope 10. The channel cleaning port 40 includes a plurality of ports 40A to 40D.

  The port 40A is a port that is connected to the forceps channel via the cleaning adapter 2 and the tube 43 and supplies fluid to the forceps channel. The ports 40B and 40C are ports that supply fluid to the forceps channel, the suction channel, and the air / water supply channel via the tubes 41 and 42. The port 40D is a spare port. Thereby, the fluid supplied from the port passes through the entire area of the forceps channel, the suction channel, and the air / water supply channel.

  As shown in FIGS. 2 and 3, the cleaning adapter 2 includes an adapter main body 52 and a lock member 55 in which first and second lock members 53 and 54 are combined. As shown in FIG. 4, the adapter main body 52 is formed by integrally forming a cylindrical portion 57 on the bottom surface of the top plate 56, and the cylindrical portion 57 is open on the bottom surface side and is attached to the upper end side of the guide pipe 58. On the bottom surface of the cylindrical portion 57, a plurality of grooves 57A extending in the radial direction are formed.

  A straight water supply passage is formed so as to reach the opening 56A of the top plate 56 from the guide pipe 58 through the inside of the cylindrical portion 57, and the supply pipe 60 to which the water supply tube 43 of the cleaning device is connected is fixed to the opening 56A. Has been. As shown in FIG. 2, the axis S <b> 2 passing through the center of the cylindrical portion 57 is eccentric with respect to the axis S <b> 1 passing through the center of the water supply channel extending straight from the supply pipe 60 to the guide pipe 58.

  The first lock member 53 has an opening 53 </ b> A having an inner diameter slightly larger than the outer diameter of the cylindrical portion 57 in the upper portion, and a hollow portion having a larger inner diameter is provided therein. Further, an arc-shaped groove 53C is formed on the upper surface so that a hole 53B for attaching the click pin 62 and a regulation pin 63 protruding from the lower surface of the top plate 56 enter. Further, a handle 53D is integrally provided so that the side of the first lock member 53 protrudes. Corresponding to this handle 53D, the top plate 56 is also provided with a handle cover 56B that protrudes laterally. When the handle 53D moves directly below, the top surface of the top plate 56 is entirely covered. Further, when the handle 53D has moved directly below the handle cover 56B, the click pin 62 is just click-engaged with a click hole 56C provided in the top plate 56.

  After the cylindrical portion 57 of the adapter main body 52 is inserted into the opening 53A of the first lock member 53, the coil spring 70 is inserted so as to surround the outer periphery of the cylindrical portion 57 from the bottom surface side of the first lock member 53, and the lower end of the coil spring 70 is The ring 71 to be received is fixed to the small diameter portion of the cylindrical portion 57. When the upper end of the coil spring 70 contacts the upper inner wall of the first lock member 53, the first lock member 53 is always urged upward with respect to the adapter main body 52. Further, the outer diameter of the ring 71 substantially matches the inner diameter of the hollow portion of the first lock member 53.

  Further, a cylindrical second lock member 54 is fixed to the first lock member 53 with screws 75. As shown in FIG. 5, a D-shaped opening 80 is formed on the bottom surface of the second lock member 54. The D-shaped opening 80 includes an arc 80A having an inner diameter substantially equal to the outer diameter of the cylindrical portion 57 and a string 80B connecting both ends thereof. ing. The bottom plate portion 54A formed corresponding to the string 80B acts as a lock portion for locking or unlocking the cleaning adapter 2 to the base 24A.

  As shown in FIG. 6, the guide pipe 58 is provided with a flange portion 58A at the upper end portion and an insertion portion 58B that is detachably fitted to the base 24A at the lower end portion. A groove 58BF having a small diameter is provided in the insertion portion 58B. Further, a truncated cone-shaped large-diameter portion 58BG having a smaller outer diameter on the lower end side is provided. The large diameter portion 58BG is provided with a main outlet 58BH that discharges the cleaning liquid toward the center of the base 24A, and a branch outlet 58BI that discharges the cleaning liquid upward not only into the base 24A but also to the outer peripheral surface of the base 24A. It has been. The outer peripheral surface of the large diameter portion 58BG is close to the inner wall of the base. A spring 90 is sandwiched between the inner wall of the cylindrical portion 57 and the outer peripheral surface of the guide pipe 58, and the spring 90 is supported by a support member 91. When the upper end of the spring 90 comes into contact with the flange portion 58A, the guide pipe 58 is always urged upward.

  Next, the operation of the present invention will be described. FIG. 7 shows a state where the cleaning adapter 2 is connected to the base 24 </ b> A of the forceps inlet 24. In this connected state, the bottom plate portion 54A of the second lock member 54 enters the lower side of the flange portion 24AF of the base 24A, and the cleaning adapter 2 does not come out upward. Further, since the click pin 62 is engaged with the click hole 56 </ b> C by the biasing force of the coil spring 70, the first and second lock members 53 and 54 do not rotate relative to the adapter main body 52.

  The lock member 55 can rotate with respect to the adapter main body 52 around the base 24A, but the bottom plate portion 54A does not come off the flange portion 24AF by this rotation. Further, the guide pipe 58 enters the base 24A, and the cleaning adapter 2 does not slide sideways with respect to the base 24A. As a result, the cleaning adapter 2 is maintained connected to the base 24A.

  When removing the cleaning adapter 2, the first lock member 53 may be rotated so as to release the engagement between the click pin 62 and the click hole 56. The second lock member 54 is rotated integrally with the first lock member 53 about the axis S2, and the bottom plate portion 54A rotates eccentrically with respect to the axis S1, so that the bottom plate portion 54A is detached from the flange portion 24AF. Can do. After the bottom plate portion 54A is detached from the flange portion 24AF, the cleaning adapter 2 may be pulled out as it is. Of course, it is possible to attach the cleaning adapter 2 to the base 24A by performing the reverse operation.

  When the tube 43 of the cleaning device 30 is not connected to the supply pipe 60 of the cleaning adapter 2 in advance, the tube 43 is connected to the tip of the supply pipe 60 after the cleaning adapter 2 is connected to the base 24A. Subsequently, when an operation is performed on the operation panel 33 of the cleaning device 30 to start cleaning of the forceps channel, the cleaning liquid flows into the cleaning adapter 2 through the supply pipe 60 as shown in FIG. Reaches part 58BG. The cleaning liquid discharged from the main outlet 58BH formed on the bottom surface of the large diameter portion 58BG flows into the base 24A. Further, the cleaning liquid discharged from the diversion outlet 58BI formed on the upper surface of the large diameter portion 24A reaches the outer peripheral surface of the base 24A through the grooves 57A formed radially on the bottom surface of the first lock member 53, and this portion is also effective. Can be cleaned.

  The pressure of the cleaning liquid supplied from the cleaning device 30 is not constant and generally varies at a random cycle. For this reason, the hydraulic pressure applied to the flange portion 58A of the guide pipe 58 changes. Since the urging force of the spring 90 follows the change in the hydraulic pressure, the guide pipe 58 moves up and down in the hollow portion of the first lock member 53 following the change in the hydraulic pressure. As the guide pipe 58 moves up and down, the large diameter portion 58BG moves up and down inside the base 24A, and the discharge position of the cleaning liquid changes. As a result, the flow path of the cleaning liquid changes variously, so that not only the inner peripheral surface of the cap 24A but also the outer peripheral surface thereof is hardly exposed to the cleaning liquid, and an efficient cleaning action can be obtained.

  According to the endoscope cleaning adapter according to the present embodiment as described above, the large-diameter portion moves in the axial direction of the guide pipe due to the liquid feeding pressure, and therefore, between the outer peripheral surface of the large-diameter portion and the inner wall of the base. Therefore, it is possible to eliminate the portion where the fluid passes through the base and does not touch the chemical at all in the base, and it is possible to reliably clean and disinfect all the portions in the base.

  In the description of the above embodiment, a liquid such as a cleaning liquid or a disinfecting liquid is used as a fluid that flows into the endoscope conduit, but the application of the present invention is not limited to such a case. Gas may be used.

  Further, in the description of the above embodiment, the cleaning adapter is connected to the cleaning device and the cleaning liquid is sent. However, the application of the present invention is not limited to this case. For example, the cleaning adapter is connected manually to a syringe or the like. You may wash | clean by sending a washing | cleaning liquid, raising / lowering pressure.

DESCRIPTION OF SYMBOLS 10 Endoscope 24A Base 52 Adapter main body 53 First lock member 54 Second lock member 58 Guide pipe 58BG Large diameter part 58BH Main outlet 58BI Split outlet 62 Click pin 63 Restriction pin 70 Coil spring 90 Spring 91 Support member

Claims (4)

In an endoscope cleaning adapter that is used by being attached to a base fixed to an inlet of a pipe line inside an endoscope, and allows a cleaning liquid to flow into the pipe line through the base.
A substantially cylindrical main body portion provided with an inlet for injecting a cleaning liquid and having a hollow portion communicating with the inlet and penetrating to the bottom surface;
A main outlet that is accommodated in the hollow portion so as to be movable up and down, has an upper end provided with an inlet through which the cleaning liquid flows from the inlet, and has a lower outlet that discharges the introduced cleaning liquid toward the center of the base. A diversion outlet for discharging the cleaning liquid upward, and a guide pipe into which the lower end is inserted into the base;
An urging member that urges the guide pipe upward in the hollow portion, and moves the guide pipe up and down in the hollow portion in response to pressure fluctuations of the cleaning liquid flowing from the inlet;
An endoscope cleaning adapter comprising:   The lower end portion of the guide pipe inserted into the base is provided with a frustoconical thicker portion having a smaller outer diameter on the lower end side, and the main outlet is formed on the bottom surface of the thicker portion, 2. The endoscope cleaning adapter according to claim 1, wherein the outlet is formed on an upper surface of the bulging portion.   The endoscope cleaning adapter according to claim 2, wherein an outer peripheral surface of the large-diameter portion is close to an inner wall of the base.   A plurality of grooves extending radially around the guide pipe are formed on the bottom surface of the main body portion facing the top surface of the large diameter portion, and the cleaning liquid discharged from the diversion outlet is directed to the outside of the guide pipe. The endoscope cleaning adapter according to claim 3.

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