JP2012040240A - Washing adapter for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve washability of an inner peripheral surface of a casing by providing a washing adapter for an endoscope, securely fixed merely by fitting operation with one part held, with low-cost structure and connected waterproof against the casing.SOLUTION: The washing adapter 10 for an endoscope includes a body 90, fluid supply tubes 110 and 120, an engaging member 130, a restricting member 140, and first and second coil springs 151 and 152. Sealing members 114 and 124 are mounted on lower end parts of fluid supply tubes 110 and 120 outer peripheral surfaces. The body 90 accommodates inside, flanges 44 and 54 of valve casings 41 and 51. The bottom surfaces of the sealing members 114 and 124 closely contact top surfaces of the flanges 44 and 54. The engaging member 130 engages the bottom surfaces of the flanges 44 and 54. The restricting member 140 restricts the engaging member 130 in an engaging position. When the restricting member 140 is moved from the restricting position to an upper or lower releasing position, the restricting member returns to its original position with impetus of the coil springs 151 and 152.

Description

  The present invention relates to an endoscope cleaning adapter connected between an endoscope and a cleaning device.

  Medical endoscopes include a forceps channel into which various treatment tools such as forceps are inserted, an air supply / water supply channel that supplies cleaning water and air for cleaning an observation window provided at the distal end of the insertion portion, and the like. Are provided. The forceps channel also serves as a suction channel for sucking fluid and tissue in the body. The suction operation in the suction channel and the air supply / water supply operation in the air supply / water supply channel are respectively controlled by the fluid control valves. The fluid control valve includes a valve casing connected to each channel and a valve member attached to the valve casing, and an operation button is integrally provided on the valve member.

  In the cleaning by the endoscope cleaning device, not only the surface of the endoscope but also each pipe line provided inside must be cleaned to remove the dirt. For this reason, the washing | cleaning adapter for connecting a washing | cleaning apparatus and each pipe line of an endoscope is used.

  Conventionally, an endoscope cleaning adapter is detachably attached to a valve casing from which a valve member is removed from a fluid control valve of an endoscope. Thereby, liquids, such as a washing | cleaning liquid and disinfection liquid, can be supplied to each pipe line via a valve casing.

  The cleaning adapter described in Patent Literature 1 is connected to a cleaning device, and is mounted with adapter bodies (fluid supply pipes) respectively attached to valve casings of a plurality of fluid control valves, a connecting member that connects the plurality of adapter bodies, A fixing plate is slidably attached to the connecting member, and is fixed to a flange provided on the outer periphery of the valve casing. Further, a seal member such as an O-ring is provided on the outer peripheral surface of the adapter body, and the seal member comes into close contact with the inner peripheral surface of the valve casing when attached to the endoscope. Thereby, between the valve casing and the adapter body is made watertight so that the cleaning liquid does not leak.

  When attaching the cleaning adapter as described above to the endoscope, first, the outer peripheral surface of the adapter body is fitted to the inner peripheral surface of the valve casing, and then the fixing plate is slid to engage with the flange portion of the valve casing. It requires a two-step operation to stop, but if either one of these two-step operations is insufficient, the adapter body may not be fixed to the valve casing and the cleaning adapter may not be attached. is there. Moreover, it may be used with insufficient fixation to the endoscope, and the cleaning adapter may come off. For this reason, it is desired to be able to attach the cleaning adapter with a simpler operation.

  Therefore, Patent Document 2 describes an engagement mechanism of a conventional one-touch coupler, that is, a fluid coupler that can be attached by a single pushing operation. As shown in FIG. 11, the fluid coupler having the engagement mechanism has a cylindrical shape and a male coupler 100 having a groove 101 formed on the outer periphery, and the male coupler 100. The female coupler 200 includes a cylindrical main body 211, a spherical body 212 that is movable in a through hole 211a that penetrates in the radial direction of the main body 211, and a main body. 211, an engaging moving member 214 having a pressing portion 213 that presses the spherical body 212 in the radial direction, and a spring 215 that urges the pressing portion 213 to contact the spherical body 212. Yes. When the male coupler 100 and the female coupler 200 are engaged, when the main body 211 is held together with the engaging moving member 214 and the male coupler 100 is inserted into the main body 211, the spherical body 212 becomes a male coupler. It fits into the groove 101 and engages securely.

JP 2008-194403 A JP 2002-243081 A

  However, in the engagement mechanism described in Patent Document 2, the engaging moving member 214 is biased downward relative to the main body 211 by the spring 215, so that the pressing portion 213 presses the spherical body 212. The engaging moving member 214 may be positioned below. Therefore, when the male coupler 100 and the female coupler 200 are engaged, the engaging moving member 214 is once moved upward, and then the main body 211 and the engaging moving member 214 are held together to hold the male coupler. Must be pushed to 100 side. Since used endoscopes are contaminated with body fluids, it is desired that the endoscopes be attached and operated by gripping only one part without touching the multiple parts of the cleaning adapter with a hand touching the endoscope. However, when the engagement mechanism described in Patent Document 2 is adopted for the cleaning adapter, when it is attached to the endoscope, it touches a plurality of locations of the cleaning adapter such as the adapter main body and the connecting portion. Further, a tube for supplying a fluid from the cleaning device may be connected to the adapter body, and it is not preferable to hold the adapter body from the viewpoint of the durability of the tube.

  Further, in the cleaning adapter described in Patent Document 1, since the seal member for closely contacting the inner peripheral surface of the valve casing is provided on the outer peripheral surface of the adapter main body, the central axis of the seal member with respect to the central axis of the valve casing If the positional accuracy of the valve is not improved, it cannot be connected to the valve casing in a watertight manner. Such an improvement in positional accuracy causes an increase in cost. Further, in the cleaning adapter described in Patent Document 1, there is a possibility that the portion where the seal member is in contact with the inner peripheral surface of the valve casing is not sufficiently cleaned.

  The present invention has been made in view of the above problems, and can be securely fixed to an endoscope only by grasping one place and performing a mounting operation, and is watertight with respect to the casing of the endoscope. It is an object of the present invention to provide an endoscope cleaning adapter that can be connected to the casing and can improve the cleaning performance of the inner peripheral surface of the casing at a low cost.

  An endoscope cleaning adapter according to the present invention is provided in communication with a pipe line of an endoscope, and is detachably attached to a cylindrical casing having a flange portion whose outer diameter is slightly larger on the outer periphery of the tip. An endoscope cleaning adapter for feeding the fluid supplied from the casing to the pipe line, and a cylindrical main body portion in which the flange portion is housed from the opened bottom side, and the main body portion. A fluid supply pipe that holds the fluid supplied from the cleaning device into the pipe line through the casing; a seal member that is provided on an outer peripheral surface of the fluid supply pipe and is in close contact with the upper surface of the casing; An engagement position that is held by the main body portion and protrudes from the inner peripheral surface of the main body portion to engage with the bottom surface of the flange portion, and retracted from the engagement position to release the engagement with the bottom surface of the flange portion. Retreat position An engagement member movable between the restriction member, a restriction position that surrounds the body portion and is slidable with respect to the body portion, and restricts the engagement member to the engagement position. A restriction member that moves between a restriction release position that releases the restriction while allowing the member to move from the engagement position to the retracted position; and between the body portion and the restriction member; A pair of members that urge the restricting members in opposite directions, bring the restricting members into contact with the engaging members, and return to the restricting position when the restricting member moves from the restricting position to the restricting release position. And an urging means.

  It is preferable that an inner peripheral surface of the main body portion is fitted to an outer peripheral surface of the flange portion.

  A plurality of the fluid supply pipes are provided, and the fluid supply pipes preferably allow the fluid to flow into a plurality of casings provided in the endoscope.

  It is preferable that the restricting member is provided with a grip portion integrally.

  Each of the pair of urging means preferably includes a plurality of urging members.

  The body portion is formed with a through hole whose inner diameter gradually decreases from the outer peripheral surface toward the inner peripheral surface in alignment with the bottom surface of the flange portion, and the engagement member is a minimum inner diameter of the through hole. It is characterized by a spherical shape having an outer diameter larger than that.

  According to the endoscope cleaning adapter of the present invention, the flange portion of the casing provided in the endoscope is housed in the main body portion, and the seal is provided on the outer peripheral surface of the fluid supply pipe to which the fluid is supplied from the cleaning device. And the engagement position at which the engagement member held by the main body engages with the bottom surface of the flange, and the engagement member engages with the bottom of the flange. Between the restriction position for restricting the engagement member to the engagement position and the restriction release position for releasing the restriction. When the regulating member moves from the regulated position to the regulated release position, the regulating member returns to the regulated position when the regulating member moves from the regulated position to the regulated release position. Securely connect to the endoscope just by Door can be. In addition, since it can be connected watertight to the endoscope casing without requiring high positional accuracy of the central axis, the cost of the cleaning adapter can be reduced and the cleaning performance of the inner peripheral surface of the casing can be improved. be able to.

It is explanatory drawing which shows schematically the pipe line structure of an endoscope. It is explanatory drawing which shows the structure of an endoscope cleaning apparatus roughly. It is principal part sectional drawing which shows the structure of the operation part and operation button of an endoscope. It is sectional drawing which shows the structure of the washing | cleaning adapter for endoscopes, and a valve casing. It is a perspective view of the washing adapter for endoscopes. It is sectional drawing of the washing | cleaning adapter cut | disconnected by the AA line of FIG. It is sectional drawing which shows the structure of an engaging member and the through-hole periphery holding this. It is sectional drawing of the washing | cleaning adapter cut | disconnected by the BB line of FIG. It is explanatory drawing which shows the process of mounting | wearing a valve casing with a washing | cleaning adapter. It is explanatory drawing which shows the process which removes a washing | cleaning adapter from a valve casing. It is sectional drawing which shows the structure of the conventional one-touch coupler.

  In FIG. 1, an endoscope 20 to which an endoscope cleaning adapter (hereinafter referred to as a cleaning adapter) 10 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 20 includes a solid-state imaging device, and is provided with a long insertion portion 21 to be inserted into a digestive tract such as a large intestine, and the insertion portion 21. An operation unit 22 used for operation and a universal cord 23 connected to the operation unit 22 are provided.

  The universal code 23 is a code connected to a processor that processes an imaging signal received from the endoscope 20 and a light source device that inputs illumination light to a light guide inserted in the endoscope 20. At one end of the universal cord 23, a connector 24 (see FIG. 2) for connecting to the processor and a connector 26 for connecting to the light source device are provided. Since the connector 24 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 26 connected to the light source device, the light guide 27 (see FIG. 2) and the end of the air supply connector 28 are partially exposed to be exposed. The air supply connector 28 communicates with the air supply / water supply channel 33 disposed inside the insertion portion 21 and the universal cord 23. The light source device is provided with a supply port for compressed air supplied from an air supply pump. When the connector 26 is connected, the end of the air supply connector 28 and the supply port are connected. On the side surface of the connector 26, a water supply connector 29, a suction connector 30 and the like are provided.

  The endoscope 20 is provided with conduits such as a forceps channel 31, a suction channel 32, and an air / water supply channel 33. The forceps channel 31 extends from a forceps inlet 34 provided in the operation portion 22 to a forceps outlet 35 provided in the distal end portion 21 a of the insertion portion 21. The suction channel 32 is shared with the forceps channel 31 from the forceps outlet 35 to the forceps inlet 34 and is shared with the forceps channel 31. The suction control valve 40 provided in the operation unit 22 from the branch point 32a (see FIG. 3). ) To the suction connector 30. A suction tank (not shown) is connected to the suction connector 30.

  One end of the air / water supply channel 33 is connected to the air / water supply nozzle 36 provided at the distal end of the insertion portion 21, and the air supply channel 33 a and the water supply channel 33 b are provided on the proximal end side of the air / water supply nozzle 36. It is branched to. The air supply channel 33 a and the water supply channel 33 b extend to the air supply connector 28 and the water supply connector 29 via an air supply / water supply control valve 50 (see FIG. 3) provided in the operation unit 22. The air supply connector 28 and the water supply connector 29 are connected to an air supply tank and a water supply tank, respectively. During cleaning and disinfection, the water supply connector 29 is hermetically closed by the cap 37. Inside the cap 37, a state in which fluid can flow is maintained between the water supply channel 33b and the branch path.

  As shown in FIG. 3, the suction control valve 40 and the air / water supply control valve 50 are mounted inside the valve casings 41 and 51 and the valve casings 41 and 51 that are fixedly provided on the housing 22 a of the operation unit 22. Valve members 42 and 52 are provided. Operation buttons 43 and 53 are integrally provided on the valve members 42 and 52, respectively.

  As shown in FIG. 4, the valve casings 41 and 51 have a cylindrical shape, and flange portions 44 and 54 that protrude radially outward from the outer peripheral surface and along the distal end surface are integrally formed. The valve casing 41 of the suction control valve 40 divides the suction channel 32 into an upstream side and a downstream side, and the valve casing 51 of the air / water supply control valve 50 has an air supply channel 33a and a water supply channel 33b on the upstream side, respectively. Each of the paths can be switched by moving the valve members 42 and 52.

  In the endoscope 20 configured as described above, the valve members 42 and 52 of the suction control valve 40 and the air / water supply control valve 50 are provided in the valve casings 41 and 51 in order to clean the channels 31 to 33 in particular. It can be removed from. The cleaning adapter 10 is attached to the valve casings 41 and 51 instead of the valve members 42 and 52.

  As shown in FIG. 2, an endoscope cleaning device (hereinafter referred to as a cleaning device) 60 is connected to the endoscope 20 via a cleaning adapter 10. The cleaning device 60 includes a box-shaped device main body 61. A cleaning tank 62 that houses the used endoscope 20 and is supplied with a cleaning liquid and a disinfecting liquid is provided on the upper part of the apparatus main body 61.

  The cleaning tank 62 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 61 is provided with a lid (not shown) that covers the opening of the cleaning tank 62. In addition to the cleaning tank 62 and the lid, the apparatus main body 61 includes an operation panel 63, piping for supplying the cleaning liquid and the disinfecting liquid to the cleaning tank 62, 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 62 has a substantially circular front portion and a substantially square rear portion. In the center of the front portion, a small article cleaning basket 64 that accommodates small parts such as a valve member and operation buttons that are removed from the endoscope 20 is disposed. The endoscope 20 is placed on the cleaning tank 62 so as to surround the accessory cleaning basket 64 in a state where the insertion portion 21 and the universal cord 23 are wound.

  In the vicinity of the accessory cleaning basket 64, a ceiling cleaning nozzle 65 and an accessory cleaning nozzle 66 are arranged. The ceiling cleaning nozzle 65 injects cleaning liquid and water toward the inner surface (ceiling) of the lid located above to clean the ceiling. The accessory cleaning nozzle 66 injects a cleaning liquid or water toward the accessory parts accommodated in the accessory cleaning basket 64 to clean the accessory parts. A waste liquid port 67 is provided at the bottom of the rear portion of the cleaning tank 62. The waste liquid port 67 discharges used cleaning liquid and disinfecting liquid and water used for rinsing from the cleaning tank 62.

  Terraces 62 a and 62 b that are one step higher than the bottom surface of the cleaning tank 62 are provided in the rear portion of the cleaning tank 62. The terrace portion 62a is provided with a water supply nozzle 68a, a disinfectant supply nozzle 68b, and a detergent supply nozzle 68c that supply liquid used for cleaning and disinfecting the endoscope 20 into the cleaning tank 62. In addition, a circulation port 69 for circulating the liquid stored in the cleaning tank 62 and generating a water flow in the liquid in the cleaning tank 62 is provided on the side surface of the terrace portion 62a.

  The terrace portion 62b is provided with a channel cleaning port 70 used for cleaning and disinfecting the forceps channel 31, the suction channel 32, and the air / water supply channel 33. The channel cleaning port 70 is a fluid supply port that supplies fluid such as cleaning liquid, disinfecting liquid, alcohol, and compressed air to the channels 31 to 33 of the endoscope 20. The channel cleaning port 70 includes a plurality of ports 70a to 70d.

  The ports 70 b and 70 c are ports connected to the valve casings 41 and 51 described above via the cleaning adapter 10 and the tubes 71 and 72, and supply fluid to the forceps channel 31, the suction channel 32, and the air / water supply channel 33. . The port 70 a is a port that is connected to the forceps inlet 34 via the tube 73 and supplies fluid to the forceps channel 31. The port 70d is a spare port.

  The fluid supplied from the port 70b to the valve casing 51 via the tube 71 and the cleaning adapter 10 flows into the air supply channel 33a and the water supply channel 33b from the valve casing 51. It flows out of the mirror 20. The other flows to the air supply connector 28 and the water supply connector 29. The fluid flowing through the air supply channel 33 a to the air supply connector 28 flows out of the endoscope 20 from the air supply connector 28. The fluid that has flowed to the water supply connector 29 through the water supply channel 33b flows to the air supply connector 28 via the branch path, and flows out of the endoscope 20 from the air supply connector 28. Thereby, the fluid passes through the entire area of the air / water supply channel 33.

  The fluid supplied from the port 70c to the valve casing 41 via the tube 72 and the cleaning adapter 10 flows into the suction channel 32 from the valve casing 41, and from the suction channel 32 through the branch point 32a, the forceps at the distal end portion 21a. It flows to the outlet 35 and flows out of the endoscope 20 from the forceps outlet 35. On the other hand, the fluid flowing into the suction channel 32 flows through the suction channel 32 to the suction connector 30 and flows out of the endoscope 20 from the suction connector 30.

  One end of the tube 73 is attached to the port 70 a and the other end is attached to the forceps inlet 34. The fluid supplied from the port 70a to the forceps inlet 34 flows from the forceps inlet 34 through the forceps channel 31 to the forceps outlet 35 of the distal end portion 21a. At this time, the fluid flowing from the suction channel 32 joins at the branch point 32a, and flows out of the endoscope 20 from the forceps outlet 35. Thereby, the fluid passes through the entire area of the forceps channel 31 and the suction channel 32.

  As shown in FIGS. 4 and 5, the cleaning adapter 10 of the present invention includes a main body 90, fluid supply pipes 110 and 120 connected to tubes 71 and 72 and supplied with fluid from the cleaning device 60, and a main body. 90, the engaging member 130, the regulating member 140 that is slidable with respect to the main body 90, and regulates the position of the engaging member 130, and is provided between the main body 90 and the regulating member 140. The first and second coil springs 151 and 152 for urging the regulating member 140 are included.

  The main body 90 has a cylindrical shape in which the bottom side facing the operation unit 22 of the endoscope 20 is opened and the top side is closed, and the cross-sectional shape orthogonal to the axial direction is an ellipse that connects two semicircles with a straight line. It has a cross section.

  As shown in FIG. 6, of the inner peripheral surface 91 of the main body 90, the inner diameters of the inner peripheral surfaces 91 a and 91 b of the semicircular portions are the same as the outer peripheral surfaces 44 a and 54 a of the flange portions 44 and 54 of the valve casings 41 and 51. It is formed according to the outer diameter. Accordingly, the main body 90 can accommodate the flange portions 44 and 54 inside from the bottom surface side, and the inner peripheral surfaces 91a and 91b of the main body portion 90 can be fitted to the outer peripheral surfaces 44a and 54a of the flange portions 44 and 54. .

  When the flange portions 44 and 54 are accommodated in the main body 90, the main body portion 90 is aligned with the bottom surfaces 44b and 54b (side facing the housing 22a) of the flange portions 44 and 54 and communicates with the inner peripheral surfaces 91a and 91b. A plurality of through holes 92 (see also FIG. 7) penetrating the peripheral wall are formed. The through hole 92 is formed in a tapered shape in which the inner diameter gradually decreases from the outer peripheral surface 93 of the main body 90 toward the inner peripheral surfaces 91a and 91b.

  The main body 90 is integrally provided with a holding projection 94 that protrudes from the outer peripheral surface 93 and holds the first and second coil springs 151 and 152.

  The fluid supply pipes 110 and 120 have fluid supply passages 111 and 121 inside, and are held by the upper surface wall 95 of the main body 90. The fluid supply pipes 110 and 120 are aligned with the valve casings 41 and 51 when the flange parts 44 and 54 are accommodated in the main body 90, and the bottom surfaces 112 and 122 of the fluid supply pipes 110 and 120, respectively. The upper surfaces of the valve casings 41 and 51 are arranged so as to be aligned with each other. Thereby, the fluid supply pipes 110 and 120 allow the fluid to flow into the valve casings 41 and 51 from the fluid supply passages 111 and 121, respectively. However, high accuracy is not required for these positional accuracy. Moreover, it is preferable that the bottom surfaces 112 and 122 of the fluid supply pipes 110 and 120 have a slight gap so as not to contact the top surfaces of the valve casings 41 and 51.

  Lower end portions of the fluid supply pipes 110 and 120 are small-diameter portions 113 and 123 each having a small outer diameter, and annular seal members 114 and 124 are fitted into the small-diameter portions 113 and 123, respectively. The seal members 114 and 124 are made of an elastic material, and when the flange portions 44 and 54 are housed inside the main body 90, the seal members 114 and 124 are in close contact with the upper surfaces of the valve casings 41 and 51, that is, the upper surfaces 44 c and 54 c of the flange portions 44 and 54. It is arranged to do. The small diameter portions 113 and 123 are integrally formed with locking pieces 113a and 123a protruding from the outer peripheral surface, and these locking pieces 113a and 123a lock the seal members 114 and 124 in the axial direction. To prevent withdrawal.

  The fluid supply pipes 110 and 120 are integrally provided with connecting portions 115 and 125 that are located above the main body 90 and project in the radial direction. The connecting portions 115 and 125 have a cylindrical shape communicating with the fluid supply passages 111 and 112, and are connected to the tubes 71 and 72 described above, respectively.

As shown in FIG. 7, the engaging members 130 are spherical and are held inside the through holes 92, respectively. Outer diameter _{R B} of the engaging member 130, most inside diameter becomes smaller circumferential surface 91a of the through-holes 92, larger than the inner diameter _{R MIN} of 91b side, is smaller and than the inner diameter _{R MAX} of the outer peripheral surface 93 side ing. For this reason, the position of the engaging member 130 is regulated so that it protrudes from the inner peripheral surfaces 91 a and 91 b and does not leave the through hole 92 into the main body 90. In addition, the code | symbol P is the protrusion amount when the engaging member 130 protrudes most from the internal peripheral surfaces 91a and 91b. As described above, the position of the through hole 92, that is, the position where the engaging member 130 is held is arranged according to the bottom surfaces of the flange portions 44 and 54. As a result, the engaging member 130 protrudes from the inner peripheral surface 91 of the main body 90 by the protrusion amount P and engages with the bottom surfaces 44b and 54b of the flange portions 44 and 54 (the position shown in FIG. 7A). ), And a retracted position (position shown in FIG. 7B) that retracts from the engagement position toward the outer peripheral surface 93 side of the main body 90 and releases the engagement with the bottom surfaces 44b and 54b of the flange portions 44 and 54. The inside of the through-hole 92 is freely movable between the two. In the present embodiment, the through hole 92 and the engaging member 130 are equiangular along the inner peripheral surfaces 91a and 91b of the main body 90 so that the bottom surfaces 44b and 54b of the flange portions 44 and 54 can be reliably engaged. It is arranged at a plurality of locations at intervals (5 locations at 45 ° intervals in FIG. 6).

  When the flange portions 44 and 54 are housed inside the main body 90, the seal members 114 and 124 are in close contact with the upper surfaces 44 c and 54 c of the flange portions 44 and 54, and the engagement member 130 is the bottom surface of the flange portions 44 and 54. The cleaning adapter 10 is fixed to the valve casings 41 and 51 by engaging with 44b and 54b. Further, as described above, since the inner peripheral surface 91 of the main body 90 is fitted to the outer peripheral surfaces 44 a and 54 a of the flange portions 44 and 54, the cleaning adapter 10 is positioned in the radial direction with respect to the valve casings 41 and 51. Is made.

  The restricting member 140 is formed in a cylindrical shape surrounding the main body 90 and is externally fitted to the main body 90 so as to be slidable along the axial direction. The restriction member 140 is integrally formed with an abutting portion 141 that is located on the inner peripheral surface side of the peripheral wall and is arranged in an elliptical shape surrounding the engaging member 130 (see FIG. 6). The contact portion 141 includes a pressing portion 141a that protrudes inward, and concave portions 141b and 141c that are positioned above and below the pressing portion 141a and are recessed by one step with respect to the pressing portion 141a. The regulating member 140 slides within a range in which the abutting portion 141 always abuts on the engaging member 130 by the biasing of first and second coil springs 151 and 152 described later. For this reason, the engaging member 130 is not detached from the outer peripheral surface 93 side of the main body 90.

  In addition, a holding protrusion 142 that holds the first coil spring 151 is integrally provided in the restriction member 140 at a position above the contact portion 141. Furthermore, the regulating member 140 is integrally provided with a grip portion 145 so as to surround the outer peripheral surface. The grip portion 145 has a concave portion 145a that matches the size of the finger and is easy to grip.

  As shown in FIG. 7A, in the normal state, the restricting member 140 is such that the pressing portion 141a and the engaging member 130 are in the same position in the axial direction of the main body 90, and the tip of the pressing portion 141a is the engaging member 130. Is pushed inward, and the engagement member 130 is in a restricting position for restricting movement from the engagement position to the retracted position. When the restriction member 140 moves from the restriction position described above upward or downward in the axial direction of the main body 90, one of the recesses 141 b and 141 c and the engagement member 130 are in the same position in the axial direction of the main body 90. Thus, it becomes a restriction release position that allows the engagement member 130 to move from the engagement position to the retracted position. FIG. 7B shows a state in which the regulating member 140 has been moved to a regulation release position below the regulation position in FIG.

As shown in FIG. 7B, when the restriction member 140 is in the restriction release position and the engagement member 130 is in the retracted position, the engagement with the bottom surfaces 44b and 54b of the flange portions 44 and 54 can be completely released. In addition, the engaging member 130 must move to a position that does not protrude from the inner peripheral surfaces 91 a and 91 b inside the through hole 92. For this reason, the distance D between the outer peripheral surface 93 of the main body 90 and the recesses 141b and 141c of the restricting member 140 is made spherical so that the spherical member 130 can be retracted to the outer peripheral surface 93 side by the maximum protrusion amount P described above. The maximum protrusion amount P of the member 130 is set. Further, the spherical member 130 so as not to leave from the outer peripheral surface 93, the outer peripheral surface 93 and the recess 141b, the distance D between 141c, and an outer diameter smaller than _{R B} of the spherical member 130.

  A plurality of first coil springs 151 are arranged between the holding projection 94 of the main body 90 and the holding projection 142 of the regulating member 140. As a result, the regulating member 140 is biased downward with respect to the main body 90. As shown in FIG. 8, the plurality of first coil springs 151 surround the main body 90 and are arranged at a predetermined interval.

  The second coil spring 152 is disposed between the holding projection 94 of the main body 90 and the top plate 143 of the regulating member 140. Thereby, the regulating member 140 is urged upward with respect to the main body 90. The plurality of first coil springs 151 and the plurality of second coil springs 152 are a pair of urging means for urging the restricting member 140 in directions opposite to each other, and the same number and the positions of the central axes are respectively arranged. . In addition, in order for the 1st and 2nd coil springs 151 and 152 to operate | move stably, the edge part of the 1st and 2nd coil springs 151 and 152 adheres to the holding | maintenance protrusion part 94, the holding | maintenance protrusion part 142, and the top plate 143, respectively. It is preferable that

  In the normal state, the restricting member 140 balances the urging force of the first coil spring 151 and the urging force of the second coil spring 152, and stops at the restricting position described above. When the restricting member 140 is in the restriction release position below the restricting position with respect to the main body 90, the biasing force by the second coil spring 152 compressed between the restricting member 140 and the main body 90 is compressed. The urging force by the first coil spring 151 that does not receive is exceeded. Therefore, the regulating member 140 can be urged upward by the urging force of the second coil spring 152 and returned to the regulated position.

  On the other hand, when the restricting member 140 is in the restriction release position above the restricting position with respect to the main body 90, the urging force by the first coil spring 151 compressed between the restricting member 140 and the main body 90 is compressed. The biasing force by the second coil spring 152 not received is exceeded. Therefore, the regulating member 140 can be urged downward by the urging force of the first coil spring 151 and returned to the regulated position.

  Next, a process when the cleaning adapter 10 having the above configuration is attached to and detached from the endoscope 20 will be described. When attaching the cleaning adapter 10 to the endoscope 20, first, the endoscope 20 with the valve members 42 and 52 removed from the control valves 40 and 50 is fixed with one hand, and the cleaning adapter 10 is held with the other hand. The flange portion 44, 54 is accommodated inside the main body portion 90 from the bottom surface side of the main body portion 90 by gripping the portion 145, and the inner peripheral surface 91a of the main body portion 90 is placed on the outer peripheral surfaces 44a, 54a of the flange portions 44, 54. , 91b are fitted (state shown in FIG. 9A). At this time, the restricting member 140 is in the restricting position, and the engaging member 130 is in the engaging position.

  Then, when the cleaning adapter 10 is further pushed into the operation unit 22 side of the endoscope 20 while holding the grip 145, the flange portions 44 and 54 come into contact with the engagement member 130. As a result, the main body 90 that holds the engaging member 130 temporarily stops, but the restricting member 140 is slidably attached to the main body 90, and thus moves from the restricting position to the lower restricting release position. . When the restriction member 140 moves to the restriction release position, the engagement member 130 is allowed to move from the engagement position to the retracted position. When the cleaning adapter 10 is further pushed in while the engaging member 130 can move to the retracted position, the engaging member 130 can get over the flange portions 44 and 54 (the state shown in FIG. 9B). ).

  When the engaging member 130 gets over the flange portions 44, 54, the seal members 114, 124 come into close contact with the upper surfaces 44 c, 54 c of the flange portions 44, 54, and the engaging members 130 are placed on the bottom surfaces 44 b, 54 b side of the flange portions 44, 54. Is located. At this time, when the hand holding the grip portion 145 is released, the restriction member 140 is in the lower restriction release position, and thus is biased upward by the second coil spring 152 and returned to the restriction position. When the restriction member 140 returns to the restriction position, the engagement member 130 returns to the engagement position. 10A, the engaging member 130 is engaged with the bottom surfaces 44b and 54b of the flange portions 44 and 54, and the cleaning adapter 10 is attached to the valve casings 41 and 51 of the endoscope 20. Is done.

  On the other hand, when removing the cleaning adapter 10 from the endoscope 20, the endoscope 20 is fixed with one hand, the grip portion 145 of the cleaning adapter 10 is gripped with the other hand, and the valve casings 41 and 51 are separated. When the cleaning adapter 10 is pulled in the direction to be engaged, the flange portions 44 and 54 come into contact with the engaging member 130, so that the main body portion 90 temporarily stops, but the restricting member 140 is located above the restricting position with respect to the main body portion 90. Move to the restriction release position. When the restriction member 140 moves to the restriction release position, the engagement member 130 is allowed to move from the engagement position to the retracted position. As shown in FIG. 10B, when the cleaning adapter 10 is further pulled while the engaging member 130 can move to the retracted position, the engaging member 130 may get over the flange portions 44 and 54. it can. Thereby, there is nothing that prevents the cleaning adapter 10 from moving, and the cleaning adapter 10 can be removed from the valve casings 41 and 51. When the hand holding the grip portion 145 is released, the restriction member 140 is in the upper restriction release position, and thus is biased downward by the first coil spring 151 and returned to the restriction position.

  As described above, it is possible to simply attach the cleaning adapter 145 simply by gripping the grip 145 and pushing the cleaning adapter 10 into the endoscope 20. Further, during the mounting operation, it is not necessary to touch the other part of the cleaning adapter 10 only by gripping the gripping part 145 at one place. Therefore, even if the hand touching the cleaning adapter 10 is dirty, Since portions other than the grip portion 145 are not contaminated, the spread of contamination can be minimized. Further, during the mounting operation, only the grip portion 145 needs to be gripped, and the tubes 71 and 72 connected to the fluid supply pipes 110 and 120 of the cleaning adapter 10 are not pulled, so that the tubes 71 and 72 are prevented from being damaged. can do. Furthermore, since the inner peripheral surfaces 91a and 91b of the main body 90 are fitted to the outer peripheral surfaces 44a and 54a of the flange portions 44 and 54, the position of the cleaning adapter 10 is also shifted in the radial direction of the valve casings 41 and 51. It is fixed without any problems.

  When the cleaning adapter 10 is attached to the endoscope 20 and the tubes 71 and 72 are connected to the ports of the cleaning device 60 to perform the cleaning process of the endoscope 20, the upper surfaces of the valve casings 41 and 51, that is, the flange portions. The upper surfaces 44c and 54c of 44 and 54 and the bottom surfaces of the seal members 114 and 124 are in close contact with each other. For this reason, even if the positional accuracy of the central axis of the sealing members 114 and 124 with respect to the central axis of the valve casings 41 and 51 is not high, the space between the valve casings 41 and 51 and the sealing member 114 can be watertight. In the conventional cleaning adapter, since the sealing member that is watertight with respect to the inner peripheral surface of the valve casing is provided, high positional accuracy of the valve casing and the sealing member is necessary, which causes an increase in cost. Since such high positional accuracy is not required, the cleaning adapter 10 can be provided at low cost. And since the sealing member of this invention is closely_contact | adhered to the upper surface instead of the internal peripheral surface of valve casings 41 and 51, the internal peripheral surface of valve casings 41 and 51 can be wash | cleaned reliably.

  The fluid that flows into the endoscope conduit via the cleaning adapter of the present invention is not limited to the liquid such as the cleaning liquid and the disinfecting liquid exemplified in the above embodiment, and may be a gas such as a sterilization gas. In the above embodiment, the pair of urging means for urging the restricting member 140 is exemplified by a configuration including a plurality of coil springs. However, the present invention is not limited thereto, and the restricting member 140 is attached to the main body 90. Any member can be used as long as it can be urged, and another spring member such as a leaf spring or an elastic member such as rubber may be used.

  In the above-described embodiment, an electronic endoscope that observes an image obtained by imaging the state of a subject using an imaging element is described as an example of the endoscope. However, the present invention is not limited to this. Instead, the present invention can be applied to an endoscope that uses an optical image guide to observe the state of a subject.

DESCRIPTION OF SYMBOLS 10 Endoscope washing adapter 20 Endoscope 31 Forceps channel 32 Suction channel 33 Air supply / water supply channel 41, 51 Valve casing 44, 54 Flange part 60 Endoscope cleaning device 90 Main body part 92 Through hole 110, 120 Fluid supply Pipes 114 and 124 Seal member 130 Engaging member 140 Restricting member 145 Holding portion 151 First coil spring 152 Second coil spring

Claims (6)

A fluid is supplied from a cleaning device from the casing to the pipe, and is detachably attached to a cylindrical casing that is provided in communication with a pipe line of the endoscope and has a flange portion that is slightly larger in outer diameter on the outer periphery of the tip. An endoscope cleaning adapter for feeding into a road,
A cylindrical main body portion in which the flange portion is housed from the opened bottom side;
A fluid supply pipe that is held in the main body part and allows the fluid supplied from the cleaning device to flow into the pipe line through the casing;
A seal member provided on an outer peripheral surface of the fluid supply pipe and closely contacting an upper surface of the casing;
An engagement position that is held by the main body portion and protrudes from the inner peripheral surface of the main body portion to engage with the bottom surface of the flange portion, and retracted from the engagement position to release the engagement with the bottom surface of the flange portion. An engaging member movable between a retracted position and
A restriction position that surrounds the main body and is slidable with respect to the main body, and restricts the engagement member to the engagement position. The engagement member moves from the engagement position to the retracted position. A restriction member that moves between a restriction release position that allows movement and releases the restriction;
Provided between the main body and the restricting member, urging the restricting members in opposite directions, bringing the restricting member into contact with the engaging member, and the restricting member from the restricting position to the restricting position An endoscope cleaning adapter, comprising: a pair of urging means for returning to the restriction position when moved to the release position.   The endoscope cleaning adapter according to claim 1, wherein an inner peripheral surface of the main body portion is fitted to an outer peripheral surface of the flange portion.   The endoscope cleaning apparatus according to claim 1, wherein a plurality of the fluid supply pipes are provided, and the fluid supply pipes allow fluid to flow into a plurality of casings provided in the endoscope, respectively. adapter.   The endoscope cleaning adapter according to any one of claims 1 to 3, wherein each of the pair of urging means includes a plurality of urging members.   The endoscope cleaning adapter according to any one of claims 1 to 4, wherein the restricting member is provided with a grip portion integrally.   The body portion is formed with a through hole whose inner diameter gradually decreases from the outer peripheral surface toward the inner peripheral surface in alignment with the bottom surface of the flange portion, and the engagement member is a minimum inner diameter of the through hole. The endoscope cleaning adapter according to any one of claims 1 to 5, characterized in that the outer diameter is spherical.

Images