JP2008229365A - Endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an endoscope which is good in assembly of the pipe sleeve fixation structure of a connector part and is inexpensive. <P>SOLUTION: When a connector fixing plate (a connecting member) 40 is inserted from the opening of a fixed plate storing part 39 and is held in the fixed plate storing part 39, screw holes 41, 42 of the connector fixing plate 40 are arranged at a position corresponding to an air-supplying connector 31 formed in a block body 38 and insert holes 43, 44 of a water conveyance connector 32. And by rotating the air-supplying connector 31 and the water conveyance connector 32 relatively from the outside for the insert holes 43, 44 of the block body 38, a male thread part 49 of the air-supplying connector 31 and a male thread part 50 of the water conveyance connector 32 are threadedly engaged, respectively, and fixed on the screw holes 41, 42 of the connector fixing plate 40 respectively. By this connector fixing plate 40, the air-supplying pipe sleeve 31, the water conveyance pipe sleeve 32, and the block body 38 are fixed and attached. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an endoscope provided with a connector for connecting to an external device.

  In general, an endoscope is provided with a connector for connecting to an external device such as a light source device. As the connector of this endoscope, for example, there is a configuration shown in Patent Document 1. The endoscope connector is provided with an air supply mechanism of an external device, an air supply base for connection with a water supply mechanism, a water supply base, or the like.

  Moreover, in the said patent document 1, the nozzle | cap | die fixing structure which fixes an air supply nozzle | cap | die, a water supply nozzle | cap | die, etc. to the connector main body of an endoscope has the following structures. That is, in this base fixing structure, the block member that forms the chassis of the connector is disposed inside the connector case. Further, the block member and the connector case are formed with insertion holes for the air supply cap, respectively. A flange portion projects from the inner end of the air supply base. The outer end side of the air supply base is projected from the inner side of the block member to the outer side of the connector case through the insertion hole of the block member and the insertion hole of the connector case.

In addition, an air supply base fixture is fitted into the insertion hole of the connector case. The air supply base is fixed by the air supply base fixing tool while the block member is sandwiched between the air supply base fixing tool and the flange portion at the inner end of the air supply base. The water supply base has the same base fixing structure.
JP 7-191266 A

  In the case of the above-mentioned conventional configuration, after assembling the air supply base, the outer end of the air supply base is projected from the inside of the block member to the outside of the connector case through the insertion holes of the block member and the connector case. The air supply base is fixed by the air supply base fixing tool while the block member is sandwiched between the air supply base fixing tool and the flange portion of the inner end of the air supply base. There is a problem that assembly work is difficult. Similarly, the water supply cap has a problem of poor assembly workability.

  The present invention has been made paying attention to the above circumstances, and an object of the present invention is to provide an inexpensive endoscope having a good assembling property of a connector base fixing structure.

  According to the first aspect of the present invention, there is provided an endoscope in which a connector for connecting to an external device is provided with a base for connecting a fluid conduit to the external device, and the fluid conduit that penetrates is integrally formed therein. A block body disposed inside the outer case of the connector, and is formed integrally with the block body in a state where it is communicated with the fluid conduit of the block body. A mounting hole into which the side is inserted, a connection member housing portion provided inside the block body, and having an insertion opening that is partially opened outside the block body, and the connection member It is inserted from the opening of the housing part and can be housed in the connection member housing part, and is disposed at a position corresponding to the mounting hole when being inserted into the connection member housing part, Screw part for fixing the base A connecting member that is formed, and a threaded portion of the connecting member that is provided on the base and assembled so as to be inserted by rotating the base relative to the mounting hole of the block body. And by rotating the base relative to the block body from the outside, the base is screwed into the connection member inserted and stored in the connection member storage portion. The endoscope is fixed to the block body and assembled.

  According to a second aspect of the present invention, the fluid conduit and the base are in communication with each other by inserting the inner end side of the base into the mounting hole and assembling to the inner part that has passed through the threaded part of the connection member. The endoscope according to claim 1, wherein:

  In the invention of claim 3, the mounting hole is formed with a fitting portion into which the inner end side of the base is fitted, and an inner bottom surface with which the inner end surface on the inner end side of the base comes into contact, The connecting member accommodating portion extends in a direction substantially perpendicular to the central axis direction of the mounting hole of the block body in a state crossing the mounting hole in the block body, and the base is attached to the block body. When assembled, after the inner end portion of the base has passed through the threaded portion of the connection member housed in the connection member accommodating portion, the inner end side is fitted into the mounting hole, and the inner end 2. The endoscope according to claim 1, wherein the inner end surface on the part side is in contact with the inner bottom surface of the mounting hole of the fluid conduit.

  The invention according to claim 4 is the endoscope according to claim 1, further comprising a fixing member that covers the opening of the block body in a state where the connection member is inserted into the connection member housing portion. is there.

  The invention according to claim 5 is the endoscope according to claim 1, wherein the block body is a resin molded product, and the connecting member is made of metal.

  According to a sixth aspect of the present invention, there is provided an endoscope in which a connector for connecting to an external device is provided with a base for connecting a fluid conduit to the external device, and the fluid conduit that penetrates is integrally formed therein. And a mounting hole that is formed in a state of being connected to the fluid pipe line of the block body, and into which the inner end side of the base is inserted. And a connecting portion that is provided inside the block body, is disposed at a position corresponding to the mounting hole, and has a screw portion for fixing the base, and is provided in the base. A screw portion that is screwed into a screw portion of the connection portion when the base is assembled so as to be inserted while being rotated relative to the mounting hole of the block body, Relative to the block body from the outside By rolling, the die is an endoscope, characterized in that fixed to the block body screwed to the connection portion.

  According to the present invention, when the connecting member is inserted into the connecting member accommodating portion from the opening outside the block body inside the outer case of the connector, the base is connected when the base is inserted into the base mounting hole from the outside of the outer case. Since the base and the block body are fixed by connecting and fixing to the member, the assembly of the base fixing structure of the connector portion is good and an inexpensive endoscope can be provided.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows an endoscope system 1 according to the present embodiment. As shown in FIG. 1, the endoscope system 1 of the present embodiment includes an electronic endoscope 2, a light source device 3, and a video processor 4 that converts an electrical signal output from the endoscope 2 into a video signal. A monitor 5 for displaying a video signal from the video processor 4, a VTR deck 6, a video disk 7, and a video printer 8 are provided.

  In addition, the endoscope 2 is provided with an elongated insertion portion 9 that is inserted into the lumen of the observation object. A proximal side operation unit 10 for operating the endoscope 2 is connected to the proximal end portion of the insertion unit 9.

  In addition, the insertion portion 9 is disposed on the distal end side of the flexible tube 11 extending from the operation portion 10 and has flexibility, and in accordance with the operation of the operation portion 10 on the hand side. A bending portion 12 that can be remotely bent in four directions, and a hard tip portion 13 that is disposed at the most distal position on the tip side of the bending portion 12 are provided.

  Further, a base end portion of the universal cord 14 is connected to the operation unit 10. A connector 15 that is detachably connected to the external light source device 3 is connected to the distal end portion of the universal cord 14. The connector 15 has a light guide incident end 16 protruding therefrom. The connector 15 of the endoscope 2 is detachably connected to the light source device 3 with the light guide incident end 16 being inserted into the light source device 3. In this connected state, the illumination light from the lamp 17 in the light source device 3 is condensed on the light guide incident end 16 of the endoscope 2 by the condenser lens 18 and is disposed inside the endoscope 2 (not shown). After being guided to the distal end portion 13 of the insertion portion 9 through the light guide, it is irradiated to the outside through an illumination lens (not shown) incorporated in the distal end portion 13.

  One end of a video cable 19 is connected to the connector 15 of the endoscope 2. A video connector 20 is connected to the other end of the video cable 19. Further, the video connector 20 is detachably connected to the video processor 4.

  The observation image of the endoscope 2 is imaged on an imaging means such as a CCD by an objective optical system (not shown) in the distal end portion 13 and converted into an electric signal. The electric signal is input to the video processor 4 and converted into a video signal, and then input to the monitor 5 so that an observation image of the endoscope 2 is displayed on the monitor 5. Note that an observation image of the endoscope 2 is recorded on the VTR deck 6 and the video disc 7 as necessary, and the observation image of the endoscope 2 is printed out by the video printer 8.

  FIG. 2 shows a schematic configuration of the air / water supply system of the endoscope 2 according to the present embodiment. In the endoscope 2 of the present embodiment, an air supply / water supply nozzle 21 is disposed on the distal end portion 13 of the insertion portion 9 to spray cleaning water, air, or the like on the objective lens of the observation optical system. A proximal end portion of the nozzle 21 is connected to a distal end portion of an air / water supply tube 22 disposed in the insertion portion 9.

  In addition, a control valve 23 for controlling the air / water supply operation from the nozzle 21 is disposed in the operation unit 10 of the endoscope 2. The control valve 23 is connected to one end of an upstream air supply tube 24, an upstream water supply tube 25, a downstream air supply tube 26, and a downstream water supply tube 27. Here, the other end portions of the upstream side air supply tube 24 and the upstream side water supply tube 25 are extended to the connector 15 side via the universal cord 14. Further, the other end portions of the downstream side air supply tube 26 and the downstream side water supply tube 27 are commonly connected to the base end portion of the air / water supply tube 22 at a branching portion 28 disposed in the operation unit 10. .

  An air supply conduit 29 and a water supply conduit 30 are formed inside the connector 15. One end of the air supply conduit 29 is connected to the upstream air supply tube 24 via the internal air supply base 31A, and one end of the water supply conduit 30 is connected to the upstream water supply tube 25 with the internal water supply cap 32A. Connected through.

  Further, an air supply base 31 and a water supply base 32 are disposed on the outer peripheral surface of the connector 15. The other end of the air supply conduit 29 in the connector 15 is in communication with the air supply base 31, and the other end of the water supply conduit 30 is in communication with the water supply base 32.

  Further, one end of the connection pipe 33 is connected to the middle part of the air supply pipe 29 of the connector 15 to form an air supply branch part 34. The other end of the connection conduit 33 is connected to an air supply base (not shown) that projects from the connection surface of the connector 15 with the light source device 3.

  Here, an air supply pump 35 is built in the light source device 3 of the endoscope system 1 of the present embodiment. When the light source device 3 and the connector 15 are connected, the air supply pump 35 is connected to the connection pipe 33 of the connector 15.

  Furthermore, a water supply tank 36 is provided in the light source device 3 of the endoscope system 1 of the present embodiment. The water supply tank 36 stores water for water supply. And the front-end | tip part of the water supply pipe line 30 of the connector 15 is extended under the water surface of the water supply tank 36 through the water supply cap 32, and is introduced in the water. In addition, the tip of the air supply conduit 29 of the connector 15 is disposed at the upper part of the water supply tank 36 and is held in a state where it is out of the water in the water supply tank 36.

  Further, the control valve 23 of the operation unit 10 is formed with a leak hole 37 that opens to the outside, and an operation button (not shown) of the control valve 23 is provided. In accordance with the operation of the operation button, the connection state of the upstream side air supply tube 24, the upstream side water supply tube 25, the downstream side air supply tube 26, the downstream side water supply tube 27 and the leak hole 37 is switched, Air supply and water supply operations are controlled.

  Next, the internal configuration of the connector 15 will be described with reference to FIGS. As shown in FIG. 3, the connector 15 of the endoscope 2 according to the present embodiment is provided with a block body 38 of a resin molded part inside the exterior case 37. Then, an air supply conduit 29 and a water supply conduit 30 bent in a substantially L shape are formed inside the block body 38 as shown in FIG.

  Further, the insertion holes (mounting holes) 43 and 44 of the air supply base 31 and the water supply base 32 are formed in the block body 38 of the connector 15 in a state where they are communicated with the air supply pipe line 29 and the water supply pipe line 30, respectively. Yes.

  Further, the block body 38 accommodates a fixed plate that is provided on the attachment surface side of the air supply base 31 and the water supply base 32 so as to extend in directions substantially perpendicular to the central axis directions of the air supply base 31 and the water supply base 32. A portion (connecting member accommodating portion) 39 is provided. The fixed plate accommodating portion 39 is opened to the outside of the block body 38.

  Further, a base fixing plate (connecting member) 40 formed of, for example, a metal plate is inserted into the fixing plate accommodating portion 39 from the outer opening. Here, the base fixing plate 40 is housed without being fixed to the block body 38 in a state of being inserted into the stationary plate housing portion 39 from the outside of the block body 38.

  Further, the screw fixing plate 40 is formed with two screw holes (cap fixing means) 41 and 42 for fixing the air supply cap 31 and the water supply cap 32, respectively. These screw holes 41 and 42 are disposed at positions corresponding to the insertion holes 43 and 44 of the air supply base 31 and the water supply base 32 in the block body 38, respectively.

  Further, a fixing member 45 of the block body 38 is disposed on the connection end surface of the connector 15 with the universal cord 14. The block body 38 is fixed by a fixing screw 46 to a chassis (not shown) provided on the light guide incident end 16 side with respect to the block body 38 via the fixing member 45.

  Similarly, the exterior case 37 has an opening 47 for inserting the air supply base 31 and the water supply base 32 at positions corresponding to the insertion holes 43 and 44 of the air supply base 31 and the water supply base 32 of the block body 38, respectively. , 48 are formed.

  Further, the air supply base 31 is formed with a male screw portion 49 that is screwed into the screw hole 41 of the base fixing plate 40. The inner end side of the air supply base 31 is inserted into the insertion hole 43 of the block body 38 from the opening 47 of the outer case 37, passes through the screw hole 41 of the base fixing plate 40, and the inner part of the insertion hole 43. Until it is inserted into the insertion hole 43 of the block body 38. At this time, when the male threaded portion 49 of the air supply base 31 is screwed into the screw hole 41 of the base fixing plate 40 and fixed, the contact between the inner end face of the air supply base 31 and the inner bottom face of the insertion hole 43 facing each other. The air supply base 31 and the block body 38 are interposed via the base fixing plate 40 by bringing the contact portion 51 and the contact surface 52 of the block body 38 with the base fixing plate 40 into contact with each other. It is supposed to be fixed. Then, a fitting portion between the insertion hole 43 of the block body 38 and the inner end portion of the air supply base 31, and a screw engagement between the male screw portion 49 of the air supply base 31 and the screw hole 41 of the base fixing plate 40. The air supply base 31 is firmly fixed to the block body 38 by bonding the portions.

  The water supply base 32 is also provided with a male screw portion 50 that is screwed into the screw hole 42 of the base fixing plate 40 in the same manner as the air supply base 31. The inner end side of the water supply base 32 is inserted into the insertion hole 44 of the block body 38 from the opening 48 of the outer case 37, passes through the screw hole 42 of the base fixing plate 40, and the inner part of the insertion hole 44. Until it is inserted into the insertion hole 44 of the block body 38. At this time, as the male threaded portion 50 of the water supply base 32 is screwed and fixed into the screw hole 42 of the base fixing plate 40, the contact between the inner end face of the water supply base 32 and the inner bottom face of the insertion hole 44 facing each other. The water supply base 32 and the block body 38 are interposed via the base fixing plate 40 by bringing the contact surface 53 and the contact surface 52 of the block body 38 with the base fixing plate 40 into contact with each other. It is supposed to be fixed. Then, a fitting portion between the insertion hole 44 of the block body 38 and the inner end portion of the water supply base 32, and a screw engagement between the male screw portion 50 of the water supply base 32 and the screw hole 42 of the base fixing plate 40. The parts are bonded and the water supply base 32 is firmly fixed to the block body 38.

  The block body 38 is formed with attachment holes 54 and 55 for the air supply inner base 31A and the water supply inner base 32A at the end edges of the air supply conduit 29 and the water supply conduit 30, respectively. Further, the fixing member 45 is formed with insertion openings 56 and 57 for the air supply base 31 and the water supply base 32 at portions corresponding to the mounting holes 54 and 55 of the block body 38, respectively. When the air supply internal base 31A and the water supply internal base 32A are assembled, the inner ends of the air supply internal base 31A and the water supply internal base 32A are connected to the block body 38 from the insertion openings 56 and 57 of the fixing member 45. In the state of being inserted into the mounting holes 54 and 55, the air supply inner base 31A and the water supply inner base 32A and the insertion openings 56 and 57 of the fixing member 45 are fixed by adhesion.

  Next, the operation of the above configuration will be described. In the endoscope 2 of the present embodiment, when the air supply / water supply control is not performed, the upstream side air supply tube 24 and the leak hole 37 of the control valve 23 of the operation unit 10 are held in communication with each other. The Therefore, the pressure of the air supply pump 35 sequentially passes through the connection line 33, the air supply branch 34, the air supply line 29, and the upstream side air supply tube 24, and is externally supplied from the leak hole 37 of the control valve 23 of the operation unit 10. Running away.

  Here, when the operation button of the control valve 23 is controlled so as to supply air, the upstream water supply tube 25, the downstream water supply tube 27, and the leak hole 37 are blocked, and the upstream air supply tube 24 and the downstream The state is switched to the state in which the side air supply tube 26 communicates. Then, the pressure of the air supply pump 35 is changed to the connection pipe 33, the air supply branching section 34, the air supply pipe 29, the upstream side air supply tube 24, the control valve 23 of the operation section 10, the downstream side air supply tube 26, the air supply. -Since it passes through the water supply tube 22 in order and is transmitted to the outside from the nozzle 21, air can be supplied.

  Further, when the operation button of the control valve 23 is controlled so as to perform water supply, the upstream side air supply tube 24, the downstream side air supply tube 26, and the leak hole 37 are blocked, and the upstream side water supply tube 25 and the downstream side The state is switched to the state in which the water supply tube 27 is communicated. Then, the pressure of the air supply pump 35 is transmitted to the water supply tank 36 via the connection pipe 33, the air supply branch 34, and the air supply pipe 29, and the water in the water supply tank 36 is supplied to the water supply pipe 30 and the upstream water supply. The tube 25, the control valve 23 of the operation unit 10, the downstream water supply tube 27, the branching unit 28, and the air / water supply tube 22 can be sequentially ejected from the nozzle 21 to the outside.

  In the endoscope 2 of the present embodiment, the air supply base 31 of the air supply pipe system is subjected to stress when the water supply tank 36 is attached / detached. At this time, the force of the air supply base 31 in the rotation direction of the pipe axis. Is a fitting portion between the insertion hole 43 of the block body 38 and the inner end portion of the air supply base 31, and a screwed portion between the male screw portion 49 of the air supply base 31 and the screw hole 41 of the base fixing plate 40. It can be received at each adhesive part. Further, the force in the pipe axis direction is applied to the contact portion 51 between the inner end surface of the air supply base 31 and the inner bottom surface of the insertion hole 43, and the base fixing plate 40 in the fixing plate housing portion 39 of the block body 38. It can be received by the contact surface 52. Therefore, the air supply base 31 is not detached from the connector 15 due to stress acting when the water supply tank 36 is attached / detached.

  The base fixing plate 40 is not particularly fixed to the block body 38, but the fitting portion between the insertion hole 43 of the block body 38 and the inner end portion of the air supply base 31, and the air supply base 31. Fixing of the block body 38 and the screwed portion between the male screw portion 49 and the screw hole 41 of the base fixing plate 40, the contact portion 51 between the inner end surface of the air supply base 31 and the inner bottom surface of the insertion hole 43. The plate housing portion 39 is firmly fixed by the contact surface 52 with the base fixing plate 40.

  Since the water supply base 32 of the water supply line system has the same base fixing structure as the above-described air supply base 31 of the air supply line system, this water supply opening is caused by stress acting when the water supply tank 36 is attached or detached. The gold 32 is not detached from the connector 15.

  Therefore, the above configuration has the following effects. That is, in the present embodiment, the fixing plate housing portion 39 is formed in the block body 38 inside the outer case 37 of the connector 15, and the base fixing plate 40 is inserted into the fixing plate housing portion 39 from the outside opening, The air supply base 31 and the water supply base 32 are inserted into the base attachment holes 43 and 44 from the outside of the outer case 37, and the air supply base 31 and the water supply base 32 are screwed and fixed to the base fixing plate 40. The air supply base 31, the water supply base 32, and the block body 38 are fixed by the base fixing plate 40. When the connector 15 is assembled, the block body 38 is inserted into the exterior case 37, and then the base fixing plate 40 is inserted into the fixing plate accommodating portion 39 of the block body 38. Subsequently, the fixing member 45 is assembled and fixed to the chassis (not shown) by the fixing screw 46. Thereafter, the air supply base 31 and the water supply base 32 are assembled, and finally the air supply internal base 31A and the water supply internal base 32A are assembled. Therefore, after the air supply base is projected from the inside of the block member to the outside of the connector case through the insertion holes of the block member and the connector case as in the prior art, the air supply base fixture and the inner end of the air supply base are When the connector 15 is assembled, the assembly work of the connector 15 is easier and the work time is shorter than when the air supply base is fixed by the air supply base fixing tool with the block member being sandwiched between the flange portion. The inexpensive and easy-to-assemble endoscope 2 can be provided in the base fixing structure in which the air supply base 31 and the water supply base 32 are assembled to the connector 15.

  Moreover, since the base fixing plate 40 is formed in a simple flat plate shape by a metal plate, it is inexpensive. Further, since the base fixing plate 40 can be firmly fixed without special fixing such as adhesion to the block body 38, it is possible to obtain a structure that is inexpensive and has good workability. Therefore, the assembling property of the base fixing structure of the connector 15 is good and the cost is low.

  Further, since the air supply base 31 and the water supply base 32 are fixed to the metal base fixing plate 40, the connection strength is higher than that in the case of fixing to a fixing member made of a plastic material.

  Further, in the present embodiment, the air supply pipe 31 is connected to one end of the air supply pipe 29 of the block body 38 disposed in the connector 15 and the air supply 31 is connected to the other end of the air supply pipe 29. Since the system is configured, the air supply base does not have a complicated shape as in the case where the air supply pipe line and the air supply base are fixed with one component, and there is an effect that the cost of parts can be kept low.

  Furthermore, the air supply base 31, the base fixing plate 40, and the internal base 31A for air supply have a simple structure and a low unit price. In addition, the block body 38 forms the air supply conduit 29, and thus has a complicated shape. However, the block body 38 is a resin molded part, which also has an effect of reducing the unit price.

  Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, as shown in FIG. 4, the present invention is applied to a base fixing structure of a ground terminal base 58 protruding from the connector 15 of the endoscope 2 of the first embodiment. The ground terminal base 58 is used when a high-frequency treatment tool is used for the endoscope 2, and forms a feedback circuit via an external device connected to the ground terminal base 58.

  An insertion hole 59 for a ground terminal cap 58 is formed in the block body 38 of the connector 15 of the present embodiment. The block body 38 is provided with a fixed plate housing portion (connecting member housing portion) 60 that extends in a direction substantially perpendicular to the central axis direction of the ground terminal base 58 on the mounting surface side of the ground terminal base 58. Yes. The fixed plate housing portion 60 is opened to the outside of the block body 38.

  Further, a stainless steel base fixing plate (connecting member) 61 for fixing the ground terminal base 58 is inserted into the fixing plate housing portion 60 from the outer opening. Here, the base fixing plate 61 is housed without being fixed to the block body 38 in a state of being inserted into the stationary plate housing portion 60 from the outside of the block body 38.

  The base fixing plate 61 has a screw hole (base fixing means) 62 for fixing the ground terminal base 58. The screw hole 62 is disposed at a position corresponding to the insertion hole 59 of the ground terminal cap 58 in the block body 38.

  In addition, an opening 63 for inserting the ground terminal cap 58 is formed in the outer case 37 at a position corresponding to the insertion hole 59 of the ground terminal cap 58 of the block body 38. Further, the ground terminal base 58 is formed with a male screw portion 64 that is screwed into the screw hole 62 of the base fixing plate 61.

  Then, the inner end side of the ground terminal base 58 is inserted into the insertion hole 59 of the block body 38 from the opening 63 of the outer case 37, and the male screw portion 64 of the ground terminal base 58 is the screw hole 62 of the base fixing plate 61. It is designed to be screwed in. At this time, as the male screw portion 64 of the ground terminal base 58 is screwed and fixed into the screw hole 62 of the base fixing plate 61, the contact between the inner end face of the ground terminal base 58 and the inner bottom face of the insertion hole 59 facing each other. The base fixing plate 61 and the block body 38 are connected via the base fixing plate 60 by bringing the contact portion 65 and the contact surface 66 of the block body 38 with the base fixing plate 61 into contact with each other. It is supposed to be fixed. Note that a fitting portion between the insertion hole 59 of the block body 38 and the inner end portion of the ground terminal base 58 and a threaded engagement between the male screw portion 64 of the ground terminal base 58 and the screw hole 62 of the base fixing plate 60 are provided. The ground terminal cap 58 is firmly fixed to the block body 38 by the portion.

  The base fixing plate 60 is connected to a metal member forming a feedback circuit (not shown) in the endoscope 2, and the ground terminal base 58 is electrically connected to the metal member via the base fixing plate 60.

  In the present embodiment, the ground terminal base 58 includes a fitting portion between the insertion hole 59 of the block body 38 and the inner end of the ground terminal base 58, and a male screw portion 64 of the ground terminal base 58 and the base fixing plate. 61 of the screw hole 62, the contact portion 65 between the inner end surface of the ground terminal cap 58 and the inner bottom surface of the insertion hole 59, and the cap fixing plate 61 in the fixing plate receiving portion 60 of the block body 38. Are firmly fixed to the block body 38 in the same manner as the air supply base 31 of the air supply line system and the water supply base 32 of the water supply line system.

  Next, the operation of the above configuration will be described. In the present embodiment, a leakage current generated when a high-frequency treatment tool is used for the endoscope 2 is transmitted to the ground terminal cap 58 via a metal member that forms a feedback circuit in the endoscope 2. And it is escaped to the external device which forms the feedback circuit connected with the earth terminal cap 58.

  Therefore, the ground terminal cap 58 of the present embodiment has a base fixing structure substantially the same as the air supply cap 31 of the air supply conduit system and the water supply cap 32 of the water supply conduit system of the first embodiment. Therefore, the same effects as those of the air supply base 31 of the first embodiment and the base fixing structure of the water supply base 32 can be obtained.

  5A, 5B to 7 are used in combination with the endoscope 2 of the first embodiment (see FIGS. 1 to 4), for example, and are inserted into the body 9. The example of the use of the stylet 71 which changes the property of the according to the operator's preference is shown.

  FIG. 5A shows an example in which the stylet 71 is used in the long-type endoscope 2A in which the length of the insertion portion 9 is long. Here, the flexible tube 11A of the long-type endoscope 2A in FIG. 5A is a soft tube, but the flexible portion 72 having a soft property on the front end side of the flexible tube 11A, the rear end A hard portion 73 having a hard property is disposed on each side.

  Further, an insertion channel 74 is disposed inside the flexible tube 11A of the endoscope 2A. The distal end side of the insertion channel 74 opens to the distal end surface of the distal end portion 13, and the rear end side opens to a treatment instrument insertion port 75 formed in the operation unit 10.

  Further, the stylet 71 is provided with an elongated wire-like insertion portion 76 and a gripping portion 77 connected to the proximal end portion of the insertion portion 76. 5A, the distal end of the insertion portion 76 of the stylet 71 inserted into the insertion channel 74 from the treatment instrument insertion port 75 of the endoscope 2A is the distal end of the distal end portion 13 of the endoscope 2A. It is inserted from the position to the position of the length L behind the bending portion 12. Here, the insertion portion 76 of the stylet 71 has its hardness changed in the longitudinal direction, the distal end side is a hard portion 76a having a very hard property, and the rear end side is a soft portion 76b having a very soft property. It has become.

  5A, the change point of the hardness of the insertion portion 76 of the stylet 71 is exactly the same as the change point between the flexible portion 72 and the rigid portion 73 of the flexible tube 11A. ing.

  FIG. 5B shows an example in which the stylet 71 is used in a short-type endoscope 2B in which the length of the insertion portion 9 is short. Here, the flexible tube 11B of the endoscope 2B of FIG. 5B has the same hardness as the flexible portion 72 on the distal end side of the flexible tube 11A of FIG. 5B, the distal end portion of the insertion portion 76 of the stylet 71 inserted into the insertion channel 74 from the treatment instrument insertion port 75 of the endoscope 2B is the distal end portion of the endoscope 2B. It is inserted from the tip position of 13 to the position of the length L behind the bending portion 12 (to the same position as in FIG. 5A).

  Further, as shown in FIG. 6, the insertion portion 76 of the stylet 71 has a plurality of long-type insertion positions indicating insertion positions when the stylet 71 is used in the long-type endoscope 2A of FIG. .., And a plurality of short type insertion position indexes 79a, 79b,... Indicating the insertion position when the stylet 71 is used in the short type endoscope 2B of FIG. Has been.

  Here, each long type insertion position index 78a, 78b,... Includes a tip position of the insertion portion 9 of the endoscope 2 and a tip position of the insertion portion 76 of the stylet 71 as shown in FIG. A length index 80 for displaying the distance between them and an endoscope identification index 81 indicating the type of endoscope corresponding to the display are provided. Similarly, each short type insertion position index 79a, 79b,... Is provided with a length index 82 and an endoscope identification index 83.

  Further, the endoscope identification index 81 or 83 of the stylet 71 is meant at a position that can be clearly seen when the stylet 71 is inserted in the vicinity of the treatment instrument insertion port 75 that is a stylet insertion port of the endoscope 2. A display is provided. Further, a stylet holder 84 formed of an elastic body is provided in the treatment instrument insertion port 75 of the endoscope 2. The insertion hole 84 a of the insertion portion 76 of the stylet 71 in the stylet holder 84 is set smaller than the outer diameter dimension of the insertion portion 76.

  Next, the operation of the above configuration will be described. Here, an example in which, for example, a colonoscopy is performed using the long-type endoscope 2A of FIG. 5A will be described. When performing this colonoscopy, first, the insertion portion 9 of the endoscope 2A is inserted as it is into the large intestine of the patient.

  In the initial stage of insertion, the large intestine is intricately bent. For this reason, when the flexible portion 72 is disposed on the distal end side like the flexible tube 11A, the insertion portion 9 is easily deformed following the shape of the bent portion of the large intestine, so that the insertion is easy.

  However, when the insertion portion 9 of the endoscope 2A is inserted to some extent, the force for pushing the insertion portion 9 is absorbed by the bent portion of the large intestine, and the followability of the insertion operation on the proximal side is not good, and the subject is greatly affected. Will give you pain. In such a case, the bending portion (especially the sigmoid colon) is straightened by the operation of the insertion portion 9 for improvement. However, since the large intestine tries to return to the original bent state, in some cases, it immediately returns to the original bent state.

  Therefore, in such a case, the stylet 71 is inserted into the insertion portion 9 of the endoscope 2A. When the stylet 71 is inserted, the distal end side of the flexible tube 11A changes to hard due to the nature of the insertion portion 76 of the stylet 71, and the rear end side of the flexible tube 11A is not much different from that before insertion. For this reason, the rear end side of the flexible tube 11A of the endoscope 2A into which the stylet 71 is inserted changes to a softer property than the distal end side, so that the rigid front and rear of the flexible tube 11A of the endoscope 2A are changed. The soft relative relationship is reversed. In this case, since the distal end side of the flexible tube 11A of the endoscope 2A is in a hard state, the insertion can be continued without returning the large intestine to the original bent state.

  Further, in order to change the property of the insertion portion 9 according to the operator's preference, the insertion length of the stylet 71 may be changed. At this time, the operator visually observes the insertion position indexes 78 and 79 provided on the insertion portion 76 of the stylet 71, so that the distal end of the insertion portion 76 of the stylet 71 is the distal end of the insertion portion 9 of the endoscope 2A. It is possible to easily recognize where it is.

  Moreover, since the insertion hole 84a of the stylet holder 84 is smaller than the outer diameter of the insertion part 76 of the stylet 71, the stylet 71 can be held and the stylet 71 is displaced during the inspection. There is no.

  Depending on the examination, a short-type endoscope 2B as shown in FIG. 5B may be used. In this case, the operator looks at the insertion position index 79 of the insertion portion 76 of the stylet 71 to determine the position of the distal end of the insertion portion 76 of the stylet 71 from the distal end of the insertion portion 9 of the endoscope 2B. Can be easily recognized.

  Further, which of the long type insertion position indices 78a, 78b,... And the short type insertion position indices 79a, 79b,... Should be viewed is identified by an endoscope provided in the vicinity of the treatment instrument insertion port 75 of the endoscope 2. What is necessary is just to look at the display corresponding to the indexes 81 and 83.

  Therefore, even if the same stylet 71 is used for the endoscopes 2A and 2B having different lengths of the insertion portion 9 in the above configuration, the stylet 71 in the endoscope 2A or 2B that is being used easily. Can be recognized correctly.

  FIG. 8 shows a first modification of the stylet 71 shown in FIGS. 5 (A) and 5 (B) to FIG. This modification is for the long-type endoscope 2A of FIG. 5 (A) that can identify the length of the insertion portion 9 of the endoscope 2 instead of the endoscope identification indexes 81 and 83 of the stylet 71 of FIG. The endoscope identification mark 91 and the endoscope identification mark 92 for the short-type endoscope 2B shown in FIG. 5B are provided.

  Therefore, in this modified example of the above configuration, the endoscope identification index for identifying the length of the insertion portion 9 of the endoscope 2 is not a character such as the endoscope identification indices 81 and 83 of the stylet 71 in FIG. In addition, since the endoscope identification marks 91 and 92 are graphic, the index is large, so that it is conspicuous and easy to see.

  FIG. 9 shows a second modification of the stylet 71 shown in FIGS. 5 (A) and 5 (B) to FIG. This modification is for the long-type endoscope 2A of FIG. 5 (A) that can identify the length of the insertion portion 9 of the endoscope 2 instead of the endoscope identification indexes 81 and 83 of the stylet 71 of FIG. The white line 93 and the red line 94 for the short-type endoscope 2B of FIG. 5B are provided.

  Moreover, in this modification, although the example of the stylet 71 corresponding to the length of the insertion part 9 of two types of endoscopes 2 from which length differs was shown, of the insertion part 9 of three or more types of endoscopes 2 is shown. You may make it correspond to length. Further, the hardness relationship of the insertion portion 9 of the endoscope 2 may be a combination of the endoscope 2 having a hard tip end and a soft rear end, and a stylet 71 having a soft tip end and a hard rear end.

  FIGS. 10A, 10B to 15 show the operation unit 10 of the endoscope 2 according to the first embodiment (see FIGS. 1 to 4). The operation unit 10 includes a grip 101, a casing body 102, a switch unit 103, a lid body 104, a control button 105, a control button 106, and a control unit as shown in FIG. A button 107 is provided.

  Here, the grip 101, the casing body 102, the switch portion 103, and the lid body 104 are unpainted resin molded parts. Further, the grip 101 is provided with a slip stopper 108 for holding the grip 101 with the left hand as shown in FIG. The slip stopper 108 is provided with a concave portion 109 on the front surface of the grip 101 in order to improve the catching of the finger of the left hand. The grip 101 is also provided with a convex portion 110 in the vicinity of the concave portion 109 so that a finger is not caught when the grip 101 is held in reverse.

  Further, as shown in FIG. 11, two curved surfaces (a first curved surface 111 and a second curved surface 112) are provided on the back surface of the grip 101. Here, when grip 101 is gripped with the left hand, the convex portion near the base of the finger other than the thumb is set to a shape that touches second curved surface 112, and the concave shape at the center of the palm touches first curved surface 111. ing. Further, the second curved surface 112 and the first curved surface 111 are arranged so that the second curved surface 112 is lower than the first curved surface 111 so as to correspond to the unevenness.

  Further, as shown in FIG. 12, the lid body 104 is fixed to the casing body 102 in a watertight manner via a packing 113. Here, a rib 114 for attaching the packing 113 protrudes from the joint surface side of the lid body 104 with the casing body 102. The rib 114 is formed in a substantially rectangular frame shape along the peripheral portion of the lid body 104 on the side of the joint surface with the casing body 102. And the packing 113 is attached in the state arrange | positioned on the outer periphery of this rib 114, as shown in FIG.

  Further, the lid body 104 is provided with a substantially U-shaped packing holding member 115 in the vicinity of the rib 114. This packing holding member 115 is provided with a notch 116 as shown in FIG. Then, the packing holding member 115 is fixed to the lid body 104 by incorporating the notch 116 of the packing holding member 115 into the convex portion 117 of the lid body 104.

  Further, the lid body 104 is provided with a protective portion 119 corresponding to the convex portion 118 of the packing holding member 115. The protective portion 119 prevents the inner peripheral portion of the packing holding member 115 from protruding inside the lid body 104.

  Further, as shown in FIG. 12, in the portion where the packing holding member 115 is not attached in FIG. 14, the packing unit 120 is provided on the casing body 102 side, so that the packing 113 is free when the lid body 104 is fixed. There is no risk of moving.

  Further, since the packing unit 120 is divided into a plurality of ribs as shown in FIG. 13, the packing unit 120 is not thick, and the appearance of the casing body 102, which is a resin molded part, does not cause sink marks.

  A substrate 121 is disposed inside the casing body 102. As shown in FIG. 13, the substrate 121 is connected to the casing main body 102 by a fixing screw 123 via a fixing member 122. Further, a fixing member 124 is provided on the substrate 121. The fixing member 124 comes into contact with the casing main body 102, thereby fixing the substrate 121 and the casing main body 102 more firmly.

  A thick portion 125 is provided in the vicinity of the contact portion of the casing body 102 with the fixing member 124. Here, the thickened portion 125 is provided with a thickened portion 126 so that the appearance does not sink, but in order to ensure the strength of the contacted portion with the fixing member 124, only the contacted portion is thickened. To leave. However, since the thick portion has a small area, the appearance does not sink.

  As shown in FIG. 10B, an internal structure 127 connected to the substrate 121 is disposed inside the grip 101. Here, three ribs 128 project inwardly on the inner peripheral surface of the grip 101. The internal structure 127 is engaged with three ribs 128 on the inner peripheral surface of the grip 101. The root portion 129 of each rib 128 is thick enough to ensure the strength of each rib 128 and to prevent the appearance of the grip 101, which is a resin molded part.

Furthermore, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
Next, other characteristic technical matters of the present application are appended as follows.
Record
(Additional Item 1) In an endoscope having a connector for connecting to an external device, an exterior case forming an exterior on the connector, and a base for connecting to the external device, a block body inside the exterior case A connecting member for connecting the block body and the base, a housing portion for the connecting member that opens to the outside of the block body is provided in the block body, and the connecting member is inserted into the housing portion from the outside of the block body, An endoscope in which a base is connected to a connecting member from the outside of the endoscope.

  (Additional Item 2) The endoscope according to Additional Item 1, wherein a fluid conduit is formed in the block body, and a base connected to the fluid conduit is provided.

  (Additional Item 3) The endoscope according to Additional Item 1, wherein a ground terminal is provided in the connector, and a connection member connected to the ground terminal is made of a conductive material.

  (Additional Item 4) A screw part that is screwed to the base and the connection member is provided, the base is screwed from the outside of the outer case, the end surface of the base is brought into contact with the block body, and the connection member is brought into contact with the base part of the block body. The endoscope according to additional item 1, characterized in that the endoscope is brought into contact with a wall opposed to the endoscope.

  (Additional Item 5) The endoscope according to Additional Item 1, wherein the base and the block body are fitted.

  (Prior Art of Additional Items 1-5) Japanese Patent Laid-Open No. 7-191266.

(Problems to be Solved by Additional Items 1 to 5) In Japanese Patent Application Laid-Open No. 7-191266, as shown in FIG. 7 of the same publication, a second main body block that forms a chassis of a connector disposed inside a connector case 41 46 is fixed so as to be sandwiched between air supply caps 88. Specifically, the air supply base 88 protrudes from the inside of the second main body block 46 in order to sandwich the second main body block 46 between the flange portion of the air supply base 88 and the air supply base fixture 102.
For this reason, it is difficult to assemble the air supply cap 88.
Furthermore, the air supply base 88 has a complicated shape for connection to the air supply tube leading to the endoscope distal end, and the cost of parts is increased.
The same applies to the water supply cap, and the water supply tube is connected to the water supply tube connected to the water supply cap and the tip of the endoscope, resulting in poor assembly and increased component costs. Yes.

  (Object of Additional Items 1 to 5) The present invention has been made in view of the above points, and has an object of providing a cap fixing structure for an endoscope connector portion that is easy to assemble and inexpensive. Yes.

(Means for Solving the Problems of Additional Items 1 to 5) A block body is provided inside the connector outer case, a connection member for connecting the block body and the base is provided, and accommodation of the connection member opened to the outside of the block body The part is provided on the block body, the connecting member is inserted from the outside of the block, and the base is connected to the connecting member from the outside of the exterior case.
The base and the block body are fixed by the connecting member.

  (Effects of Supplementary Items 1 to 5) The air supply line system of the block body 38 is formed by only the air supply base 31, the fixing plate 40, the block body 38, and the connection base 32, and the number of parts is small. Further, the air supply base 31, the fixing plate 40, and the connection base 32 have a simple structure and a low unit price. Since the block body 38 forms the air supply conduit 29, the shape of the block body 38 is complicated, but it is a molded product, and the unit cost can be reduced. Further, the assembling method includes inserting the fixing plate 40 into the block body 38, assembling the air supply base 31 to the fixing plate 40 from the outside of the exterior case 37, and bonding the air supply base 31 to the block body 38 and the male screw portion 49. Therefore, assembly is easy and time is short. Further, the fixing plate 40 can be firmly fixed without special fixing such as adhesion to the block body 38. That is, it has a structure that is cheap and has good assembly workability.

  (Additional Item 6) In an endoscope system including a flexible endoscope insertion portion, a treatment instrument channel provided in the insertion portion, and a stylet inserted from a treatment instrument insertion port, Indices indicating the relative position from the distal end of the endoscope insertion section are provided in a plurality of types of stylets so as to be compatible with a plurality of endoscopes having different lengths of the insertion section, and identification means for various indices is provided. Features an endoscope.

  (Additional Item 7) The endoscope according to Additional Item 6, wherein characters are used as means for identifying a plurality of types of indices.

  (Additional Item 8) The endoscope according to Additional Item 6, wherein a figure is used as a means for identifying a plurality of types of indices.

  (Additional Item 9) The endoscope according to Additional Item 6, wherein the index color is used as means for identifying a plurality of types of indices.

  (Additional Item 10) The endoscope according to Additional Item 6, wherein a mark corresponding to the identification means provided on the stylet is provided on the endoscope.

  (Additional Item 11) The endoscope according to Additional Item 6, wherein a mark corresponding to the identification means provided on the stylet is provided in the vicinity of the treatment instrument insertion port of the endoscope.

  (Prior Art of Additional Items 6 to 11) Japanese Patent Application No. Hei 8-309691.

  (Problems to be solved by the additional items 6 to 11) In Japanese Patent Application No. 8-309691, a scale is provided on the main body of the stylet so that the insertion amount of the stylet can be visually recognized. However, in this stylet, when used for endoscopes with different lengths of the insertion portion, the relative position of the stylet tip and the insertion portion tip is different on the same scale, so that the desired position from the insertion portion tip can be obtained. If a stylet is to be placed, it must be calculated for each scope, which is difficult to use.

  (Object of Additional Items 6 to 11) The present invention has been made in view of the above points, and a stylet that can easily recognize the insertion length of a stylet even when used for a plurality of endoscopes having different insertion lengths. The purpose is to provide.

  (Means for Solving the Problems of Additional Items 6 to 11) The index indicating the relative position of the stylet tip from the tip of the endoscope insertion portion can be applied to a plurality of endoscopes having different insertion portion lengths. And a plurality of types of stylets, as well as identification means for various indicators.

  When the same stylet is used for endoscopes with different lengths of the insertion portion, the insertion length of the stylet is confirmed by looking at the corresponding index.

  (Effects of Additional Items 6 to 11) Even when the same stylet is used for endoscopes having different insertion lengths, the insertion position of the stylet can be easily recognized.

  Furthermore, when the endoscope identification index is a graphic instead of a character, the index is conspicuous and easy to see.

1 is a schematic configuration diagram of an entire endoscope system showing a first embodiment of the present invention. FIG. The schematic block diagram of the air supply / water supply system in the endoscope of 1st Embodiment. The longitudinal cross-sectional view which shows the principal part structure of the connector in the endoscope of 1st Embodiment. AA line sectional view of Drawing 3. (A) is a top view which shows the usage example of a stylet in an endoscope, (B) is a top view which shows the example which used the stylet for the short type endoscope. Sectional drawing of a stylet insertion slot. The top view of the principal part which shows the parameter | index provided in the stylet. The top view of the principal part which shows the 1st modification of a stylet. The top view of the principal part which shows the 2nd modification of a stylet. (A) is a front view which shows the operation part of an endoscope, (B) is the BB sectional drawing of (A). The rear view which shows the operation part of an endoscope. FIG. 12 is a sectional view taken along line AA in FIG. 11. The cross-sectional view of the principal part which shows the packing receiving part in the casing main body in the operation part of an endoscope. The top view which shows the attachment state of the packing in the casing main body in the operation part of an endoscope. The figure which shows the state which hold | gripped the grip of the operation part of an endoscope with the left hand.

Explanation of symbols

    DESCRIPTION OF SYMBOLS 2 ... Electronic endoscope, 3 ... Light source device (external device), 15 ... Connector, 31 ... Air supply base, 32 ... Water supply base, 37 ... Outer case, 38 ... Block body, 39 ... Fixing board accommodating part (connection) Member housing part), 40 ... base fixing plate (connecting member), 41, 42 ... screw hole (base fixing means), 43, 44 ... insertion hole (mounting hole), 49, 50 ... male screw part.

Claims (6)

In an endoscope in which a connector for connecting to an external device is provided with a base for connecting a fluid conduit with the external device,
A fluid pipe line penetrating through is integrally formed inside the block body disposed inside the outer case of the connector;
A mounting hole that is integrally formed with the block body in a state where it is in communication with the fluid conduit of the block body, and into which the inner end side of the base is inserted;
A connecting member housing portion provided inside the block body and formed with an insertion opening partly opening outside the block body;
It can be inserted from the opening of the connection member accommodating portion and accommodated in the connection member accommodating portion, and is disposed at a position corresponding to the mounting hole when it is inserted into the connection member accommodating portion. A connection member on which a screw portion for fixing the base is formed;
A screw portion that is provided in the base and is screwed into the screw portion of the connection member when the base is assembled so as to be inserted by rotating relative to the mounting hole of the block body;
The base is rotated relative to the block body from the outside, so that the base is screwed into the connection member inserted and housed in the connection member housing portion and fixed to the block body. Endoscopes that can be assembled with each other. The fluid conduit and the base are communicated with each other by inserting and assembling the inner end side of the base into the mounting hole up to a back part that has passed through the threaded part of the connection member. 1. The endoscope according to 1. The mounting hole is formed with a fitting portion into which the inner end side of the base is fitted, and an inner bottom surface with which an inner end surface on the inner end side of the base abuts,
The connection member accommodating portion extends in a direction substantially orthogonal to the central axis direction of the mounting hole of the block body in a state of crossing the mounting hole in the block body,
When the base is assembled to the block body, after the inner end of the base has passed through the threaded portion of the connection member housed in the connection member housing, the inner end is fitted into the mounting hole. The endoscope according to claim 1, wherein the inner end surface on the inner end side is in contact with the inner bottom surface of the mounting hole of the fluid conduit. The endoscope according to claim 1, further comprising a fixing member that covers the opening of the block body in a state where the connection member is inserted into the connection member housing portion. The endoscope according to claim 1, wherein the block body is a resin molded product, and the connection member is made of metal. In an endoscope in which a connector for connecting to an external device is provided with a base for connecting a fluid conduit with the external device,
A fluid pipe line penetrating through is integrally formed inside the block body disposed inside the outer case of the connector;
A mounting hole that is formed in communication with the fluid conduit of the block body and into which the inner end side of the base is inserted;
A connecting portion provided inside the block body, disposed at a position corresponding to the mounting hole, and formed with a screw portion for fixing the base;
A screw portion that is provided in the base and is screwed into the screw portion of the connection portion when the base is assembled so as to be inserted by rotating relative to the mounting hole of the block body;
The endoscope is characterized in that the base is screwed into the connecting portion and fixed to the block body by rotating the base relative to the block body from the outside.

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