JP6829630B2 - Endoscope operating device - Google Patents

Description

The present invention relates to an endoscope operating device.

In endoscopes having functions such as suction, air supply, and water supply, an operating device for controlling the flow of fluid is provided. This type of operating device has at least a portion of the endoscope body to clean the fluid flow conduits after use of the endoscope and to replace difficult-to-clean parts with each use. In many cases, it is configured to be removable.

For example, the suction operation device described in Patent Document 1 includes a cylinder fixed to the operation portion of the endoscope, a suction plug that can be attached and detached inside the cylinder, and a suction plug that is inserted into the suction plug and supports the suction operation device so as to be able to move up and down in the cylinder. It is provided with a cylinder operating member. A pipe extending from the suction source is connected to a mouthpiece provided in the suction plug, and a pipe arranged in the insertion portion of the endoscope is connected to the lower end of the cylinder. By moving the operating member up and down in the cylinder, the space between the suction plug and the operating member is opened and closed, and the state where the suction force is applied to the tip of the cylinder (the insertion part side of the endoscope) and the state where the suction force is not applied are switched. Be done.

In the suction operation device of Patent Document 1, the suction plug is held in the cylinder by engaging the convex portion formed on the outer surface of the suction plug with the engagement groove formed on the inner surface of the cylinder. A cam groove is provided at the upper end of the cylinder, and a cam portion supported on the cam groove is provided on the suction plug. When the cam portion is rotated along the cam groove, the suction plug gradually rises to disengage the convex portion from the engaging groove, and the suction plug can be removed from the cylinder.

Japanese Patent No. 3143164

In the structure of Patent Document 1, the suction plug may be unintentionally removed from the cylinder by applying a force in the rotational direction to the suction plug. In particular, a mouthpiece for connecting to the pipe line on the suction source side protrudes to the side of the suction plug, and the above-mentioned cam portion is provided at the base of the mouthpiece. Therefore, there is a problem that there is a high risk that the suction plug will come off due to a large rotational force acting on the suction plug by using the mouthpiece or the pipe line connected to the mouthpiece as a lever.

If the suction plug comes off while using the endoscope, the sucked filth and body fluid will be scattered around. Therefore, it is desired that the suction plug does not come off when the endoscope is used, and the suction plug can be easily removed after use.

Further, the type is not limited to the above-mentioned operation device for suction, and an insert body (corresponding to the suction plug of Patent Document 1) can be inserted and removed from the support provided in the main body of the endoscope. The operating device has a similar problem.

The present invention has been made in view of the above problems, and it is possible to easily remove parts that can be attached to and detached from the endoscope body, and unintentional disassembly when using the endoscope. It is an object of the present invention to provide an operating device for an endoscope in which

The operation device of the endoscope of the present invention is provided in the main body of the endoscope and has a support having an internal space of the support that opens on the outer surface side of the endoscope and a support that can be inserted into and removed from the space of the support through the opening. and insert that is held by the holding means in a state being supported by the insert member is rotatable about an axis directed in the insertion and removal direction of the insert to the support body space, state insert is held by the holding means in when rotated in the removal direction with respect to the insert, and the detachment operating member to release the holding by the holding means to impart to the insert a moving force in the separating direction from the support, Ru comprising a.

According to this configuration, the insertion body can be easily detached from the support by rotating the detaching operation member in the removal direction. Further, since the holding of the insert body is maintained by the holding means when the detachment operation member is not rotated in the removal direction, it is possible to prevent the insert body from being unintentionally detached from the support.

The insert body is provided with an outward protrusion that protrudes outward from the space inside the support while being held by the holding means, and the detachment operation member is provided outside the outward protrusion in the radial direction centered on the axis. It is preferably located, capable of rotating in the removal direction with respect to the outward protrusion, and being supported by restricting movement in the insertion / removal direction.

A detachment operation member is configured as an annular body surrounding the outward protrusion, and a rotation range limiting portion that limits the range of rotation of the detachment operation member with respect to the insert is provided at a portion that faces the outward protrusion and the detachment operation member in the radial direction. , It is preferable to provide an insertion / removal direction restricting unit that regulates the relative movement of the insertion body in the insertion / removal direction and the detachment operation member.

By providing at least one flat gripping surface on the outer peripheral surface of the release operation member which is an annular body, it becomes easy to rotate the release operation member.

As a configuration for applying a force in the detachment direction to the detachment operation member, at least one of the detachment operation member and the support is provided with a detachment guide surface that changes the position in the insertion / detachment direction as it advances in the rotation direction about the axis. The detachment operation member and the support are brought into contact with each other via the guide surface. When the detachment operation member rotates in the detachment direction, the contact position between the detachment operation member and the support changes along the detachment guide surface, and a moving force in the detachment direction is generated. It is preferable to operate the detachment operation member in this way.

It is preferable that the detachment operation member and the support have a portion facing each other in the insertion / detachment direction, and a detachment guide surface is provided on the opposed portion.

As a holding means, the support is provided with a recess extending in the insertion / removal direction and communicating with the opening of the space inside the support, and the insert is provided with a radial extension portion that projects radially around the axis and fits into the recess. It is preferable to provide an insertion / removal resistance imparting portion that gives resistance to the movement of the radial extension portion in the insertion / removal direction at a position in the middle of the recess in the insertion / removal direction.

The detaching operation member may be provided with a rotational resistance imparting portion that abuts on the radial extension portion and receives rotational resistance when rotating in the removal direction.

The present invention is suitable for a type of operating device that controls fluid flow by pressing. Specifically, a space inside the insertion body is provided inside the insertion body, and a pressing operation member that is movably supported in the insertion / removal direction with respect to the insertion body is provided. The pressing operation member has a movable valve that moves to a blocking position that blocks fluid flow between the support internal space and the insertion internal space and a communication position that allows fluid flow, and is urged to the blocking position by urging means. Will be done. Then, the pressing operation member moves from the blocking position to the communication position by the pressing operation.

Further, a first pipe line connecting to the space inside the support body and a second pipe line connecting to the space inside the insertion body are provided, and the first pipe line is connected to the suction port provided in the insertion portion, and the second pipe is connected. By connecting the path to the suction source, it can be applied as an operating device for suction operation in an endoscope.

According to the present invention, an endoscope operating device that can easily remove parts that can be attached to and detached from the endoscope body and is less likely to cause unintended disassembly when the endoscope is used. Obtainable.

It is a figure which shows the endoscope conceptually. It is sectional drawing of the state in which the button is not pressed by the suction operation device which concerns on embodiment of this invention. It is sectional drawing which shows the state which pressed the button with the suction operation device. It is a side view which shows the state in the process of assembling the button unit which constitutes a suction operation device to a cylinder. It is sectional drawing which follows the VV line of FIG. It is sectional drawing which follows the VI-VI line of FIG. It is a side view of the suction operation device in the state where the button unit is assembled to the cylinder, (A) shows the whole suction operation device, and (B) shows the cam mechanism schematically. It is a side view of the suction operation device in the process of removing the button unit from the cylinder, (A) shows the whole suction operation device, and (B) shows the cam mechanism schematically. It is a perspective view which shows the state which holds the sleeve ring at the time of removing a button unit.

The endoscope 10 whose schematic configuration is shown in FIG. 1 is used in the medical field, and has a small-diameter insertion portion 11 to be inserted into the patient's body and an operation portion 12 connected to the base of the insertion portion 11. doing. A universal tube 13 which is a flexible tubular body extends from the operation unit 12, and a video connector 14 is provided at the tip of the universal tube 13. The video connector 14 is removable from the processor 15.

An image pickup lens system (not shown) and an image sensor (not shown) are provided at the tip of the insertion portion 11. An image to be observed is formed by an image pickup lens system and signalized by an image sensor. This signal is sent to the video connector 14 via an image signal cable, and is processed by an image processing circuit provided in the video connector 14 and the processor 15 to display an image on a monitor (not shown) or a recording medium. Image data can be recorded in (not shown). The endoscope 10 and the processor 15 further include an illumination means for distributing illumination light from a light distribution window provided at the tip of the insertion portion 11.

A suction pipe line (first pipe line) 16 is arranged inside the endoscope 10. The suction pipe line 16 connects a suction port 18 provided at the tip of the insertion portion 11 and a suction operation device 19 provided at the operation portion 12. The suction source 22 provided outside the endoscope 10 and the suction operation device 19 are connected by a suction pipe line (second pipe line) 23.

When the suction source 22 is driven, a suction force is generated. When the suction operation device 19 is not operated, the suction line 16 and the suction line 23 are not in communication with each other, and the suction force acts only between the suction source 22 and the suction operation device 19 through the suction line 23 to suck. The suction force does not reach the pipeline 16. When the suction operation device 19 is operated, the suction pipe line 16 and the suction pipe line 23 communicate with each other, and the suction force reaches the suction port 18, so that body fluids and filth can be sucked from the suction port 18. The specific structure of the suction operation device 19 will be described later.

The operation unit 12 is further provided with a plurality of push button switches 27. The push button switch 27 is provided as an operating means for transmitting an electric signal in response to the pressing operation to perform a predetermined operation (control). As an example, operations such as shooting (image recording) of an observation target and image freeze on a monitor can be performed using the push button switch 27.

The details of the suction operation device 19 will be described with reference to FIG. 2 and the following. As shown in FIGS. 2 and 3, the suction operation device 19 includes a cylinder (support) 30, a valve body 31, a piston (pressing operation member) 32, a button (pressing operation member) 33, and a compression spring (urging means). It has 34 and a sleeve ring (release operation member) 35. Although the details will be described later, the cylinder 30 is fixedly supported by the operation unit 12, and the valve body 31, the piston 32, the button 33, the compression spring 34, and the sleeve ring 35 are buttons that can be inserted and removed from the cylinder 30. It constitutes a unit 80.

The direction in which the button unit 80 is inserted and removed from the cylinder 30 (the vertical direction in FIGS. 2, 7, and 8 from FIG. 2) is defined as the insertion / removal direction. Of the insertion / removal directions, the direction indicated by the arrow line U in FIGS. 2 to 5, 7 (A), and 8 (A) is upward, and the direction indicated by arrow D is downward. The lower part is the insertion direction of the button unit 80 with respect to the cylinder 30, and the upper part is the detachment direction of the button unit 80 from the cylinder 30. Further, the virtual line passing through the center of the piston 32 and extending in the insertion / removal direction is defined as the axis X (FIGS. 2 and 3), the radial direction with respect to the axis X is the radial direction, and the circumferential direction around the axis X is the circumference. The direction. Since the orientation of the suction operation device 19 changes depending on the holding state of the endoscope 10, the insertion / removal directions (upper and lower) described in the following description do not always coincide with the vertical directions.

When the button unit 80 is mounted (inserted) on the cylinder 30, the valve body 31 is held with the relative movement with respect to the cylinder 30 regulated, and the piston 32 and the button 33 are supported so as to be able to be pressed downward against the valve body 31. Will be done. The sleeve ring 35 is rotatably supported around the axis X (FIGS. 2 and 3).

The cylinder 30 has a large diameter portion 40 on the upper side in the insertion / removal direction and a small diameter portion 41 on the lower side. Inside the cylinder 30, a space inside the cylinder (space inside the support) 42 that penetrates the large diameter portion 40 and the small diameter portion 41 in the insertion / removal direction is formed. The upper end of the large diameter portion 40 is an upper end opening 30a (FIGS. 4 and 5) opened to the outer surface side of the endoscope 10. At the lower end of the small diameter portion 41, a conical tapered portion 41a whose diameter gradually decreases as it advances downward in the insertion / removal direction is formed, and a cylindrical pipeline connection is formed from the center of the tapered portion 41a downward. The portion 43 is protruding. The cylinder inner space 42 is a portion other than the tapered portion 41a and the pipeline connecting portion 43, and is surrounded by a cylindrical inner surface having a substantially constant inner diameter.

As shown in FIG. 5, the large diameter portion 40 has a larger wall thickness in the radial direction than the small diameter portion 41, and the outer peripheral surface of the large diameter portion 40 projects in the outer diameter direction from the outer peripheral surface of the small diameter portion 41. Due to the difference in outer diameter size between the large diameter portion 40 and the small diameter portion 41, a step portion 44 facing downward is formed on the outer surface of the cylinder 30.

As shown in FIGS. 4 and 5, a lateral recess (holding means) 45 that penetrates the cylinder 30 in the radial direction is formed in a part of the large diameter portion 40 in the circumferential direction. The upper end portion of the side recess 45 is opened so as to communicate with the upper end opening 30a, and is recessed downward from the open portion along the insertion / removal direction, and the introduction portion 45a is sequentially recessed from the upper side to the lower side. It has a constant width portion 45b, a narrow portion (insertion / detachment resistance imparting portion) 45c, and a fitting holding portion 45d.

As shown in FIG. 4, the width of the introduction portion 45a in the circumferential direction decreases from the upper side facing the upper end opening 30a to the lower side. The width of the constant width portion 45b in the circumferential direction is substantially constant. The narrow portion 45c has a shape narrower in the circumferential direction than the constant width portion 45b. The fitting holding portion 45d constitutes the bottom portion of the side recess 45, and has a circular shape in which a part of the upper side connected to the narrow portion 45c is opened.

The cylinder 30 is further provided with a guide cam 46. The guide cam 46 is a convex end face cam provided on the upper end side of the large diameter portion 40, and three guide cams 46 are provided at different positions in the circumferential direction. Two of these guide cams 46 are shown in FIGS. 4, 7 (A) and 8 (A). As shown in FIG. 4, the guide cam 46 is formed on the outer peripheral surface side of the large diameter portion 40, and the inner cylindrical portion 40a which is a part of the large diameter portion 40 is provided on the inner diameter side of the guide cam 46. There is. The inner peripheral surface of the inner cylindrical portion 40a is a smooth cylindrical surface, and the unevenness on the cylinder inner space 42 side due to the formation of the guide cam 46 does not occur.

Each guide cam 46 has a top surface 46a facing the upper end side of the large diameter portion 40, an insertion / removal direction surface 46b and an inclined surface (disengagement guide surface) 46c located on both sides of the top surface 46a in the circumferential direction. .. The top surface 46a is a surface extending in the circumferential direction and does not contain a tilting component in the insertion / removal direction. The insertion / removal direction surface 46b is a surface extending in the insertion / removal direction and does not contain a tilting component in the circumferential direction. The inclined surface 46c has an inclined component that increases the distance from the insertion / removal direction surface 46b as it moves downward away from the top surface 46a. When the cylinder 30 which is a tubular body is developed in a plane shape, the inclined surface 46c becomes an inclined surface having a substantially constant inclination angle over the entire surface. The insertion / removal direction surface 46b of one of the three guide cams 46 is in a relationship of overlapping with the inner surface of the constant width portion 45b of the side recess 45 (see FIG. 4).

As shown in FIGS. 2, 3 and 5, the valve body 31 has a first tubular portion 50 extending in the insertion / removal direction and a second tubular portion (holding) protruding radially from the first tubular portion 50. Means, radial extension) 51. An internal space (insertion body space) 52 penetrating in the insertion / removal direction is formed in the first tubular portion 50, and an internal space (insertion body space) 53 penetrating in the radial direction is formed in the second tubular part 51. , One end of the internal space 53 communicates with the internal space 52. At the lower end of the first tubular portion 50, a tapered inner surface 54 having a conical inner surface shape whose inner diameter increases as it goes downward is formed.

As shown in FIGS. 2 and 3, an outward protruding portion 56 having a diameter larger than the inner diameter of the cylinder inner space 42 is provided at the upper end of the first tubular portion 50 in the valve body 31. An annular spring support groove 57 that is open upward is formed on the upper surface of the outward protrusion 56 at a position surrounding the internal space 52. On the outer peripheral surface of the outward protrusion 56, a fitting recess (insertion / removal direction regulating portion) 58 (see FIGS. 2, 3, and 5) facing the outer diameter side and a rotation regulating protrusion (see FIG. 2, FIG. A rotation range limiting portion) 59 (see FIGS. 2, 3, 5, and 6) is formed.

As shown in FIGS. 4, 7 (A) and 8 (A), the second tubular portion 51 of the valve body 31 has a cylindrical cross-sectional shape surrounding the internal space 53. As shown in FIGS. 2 and 3, a suction source connection port 60 is provided at the tip of the second tubular portion 51.

As shown in FIGS. 2, 3 and 5, the piston 32 is provided in the middle of the cylindrical shaft portion 61 extending in the insertion / removal direction, the head portion 62 provided at the upper end of the shaft portion 61, and the shaft portion 61. It has an annular flange portion 63 and a movable valve 64 provided at the lower end of the shaft portion 61. The head portion 62 has a larger diameter than the shaft portion 61, and the flange portion 63 has a larger diameter than the head portion 62. The movable valve 64 has a conical outer surface shape in which the outer diameter increases as it advances downward.

As shown in FIGS. 2, 3, and 5, the button 33 has a cylindrical central portion 65, an upper wall portion 66 extending in the outer radial direction from the upper end of the central portion 65, and a lower portion from the peripheral edge of the upper wall portion 66. It has an outer peripheral wall portion 67 extending to and surrounding the central portion 65. At the lower end of the central portion 65, a retaining portion 65a protruding in the inner diameter direction is formed.

As shown in FIGS. 2, 3, 5, and 6, the sleeve ring 35 is an annular body that surrounds the outward protrusion 56 of the valve body 31. As shown in FIGS. 4 and 6 to 9, the outer peripheral portion of the sleeve ring 35 is provided with three gripping surfaces 70a, 70b, 70c and a curved surface 70d at different positions in the circumferential direction (3). (See FIG. 6). The curved surface 70d is a part of a cylindrical surface centered on the axis X (FIGS. 2 and 3). Each of the gripping surfaces 70a, 70b, and 70c is a surface having a flatter shape than the curved surface 70d (a flat surface, or a convex surface or a concave surface having an extremely small curvature as compared with the curved surface 70d). The sleeve ring 35 further has a thick portion 71 located between the gripping surface 70a and the curved surface 70d. The thick portion 71 has a larger amount of protrusion in the outer diameter direction than the gripping surfaces 70a, 70b, 70c and the curved surface 70d (see FIG. 6).

A downward protrusion (rotational resistance imparting portion) 72 is projected from the lower end of the thick portion 71 of the sleeve ring 35 (see FIGS. 4 and 7 (A)). The lower protrusion 72 has a semicircular shape that is convex downward. On the inner peripheral surface of the sleeve ring 35, a rotation range limiting groove (rotation range limiting portion) 73 (see FIG. 6) extending in the circumferential direction and a fitting projection (insertion / detachment direction regulating portion) 74 protruding in the inner diameter direction (FIG. 6) 2. (see FIGS. 3 and 5) is provided. As shown in FIG. 6, the rotation range limiting groove 73 is formed along the circumferential region in which the curved surface 70d is formed, and one end 73a of the rotation range limiting groove 73 is a thick portion 71. It is located on the inner diameter side, and the other end 73b is located on the inner diameter side of the curved surface 70d.

As shown in FIG. 4, the sleeve ring 35 is further provided with a guide cam 75. The guide cam 75 is a concave end face cam provided at the lower end of the sleeve ring 35, and three guide cams 75 are provided at different positions in the circumferential direction. Two of these guide cams 75 are shown in FIGS. 4, 7 (A) and 8 (A).

Each guide cam 75 has a top surface 75a facing the lower end side of the sleeve ring 35, an insertion / removal direction surface 75b and an inclined surface (disengagement guide surface) 75c located on both sides of the top surface 75a in the circumferential direction. The top surface 75a is a surface extending in the circumferential direction and does not contain a tilting component in the insertion / removal direction. The insertion / removal direction surface 75b is a surface extending in the insertion / removal direction and does not include a tilting component in the circumferential direction. The inclined surface 75c has an inclined component that increases the distance from the insertion / removal direction surface 75b as it moves downward away from the top surface 75a. When the sleeve ring 35, which is an annular body, is developed in a plane shape, the inclined surface 75c becomes an inclined surface having a substantially constant inclination angle over the entire surface.

As shown in FIGS. 7 (A) and 7 (B), the guide cams 75 provided on the sleeve ring 35 and the guide cams 46 provided on the cylinder 30 have an uneven shape that fits each other. More specifically, the lengths of the top surfaces 46a and 75a of each other, the lengths of the insertion / removal direction surfaces 46b and 75b of each other, and the inclination angles and lengths of the inclined surfaces 46c and 75c of each other are substantially the same.

Among the components of the suction operation device 19 described above, the cylinder 30 is made of a material having a higher rigidity than the valve body 31 and the sleeve ring 35. Specifically, the cylinder 30 is made of metal, and the valve body 31 and the sleeve ring 35 can be made of a resin material such as polyethylene or polypropylene.

The assembly of the suction operation device 19 will be described. As shown in FIGS. 4 and 5, the suction operation device 19 is largely composed of a cylinder 30 that is fixedly supported by the main body of the endoscope 10 and a button unit 80 that is removable from the cylinder 30. Divided. When assembling the suction operation device 19, the valve body 31, the piston 32, the button 33, the compression spring 34, and the sleeve ring 35 are combined to form the button unit 80, and the button unit 80 is inserted into the cylinder 30.

The cylinder 30 is fixed to the operation unit 12 of the endoscope 10. The operation unit 12 is formed with a cylinder insertion opening (not shown), and the cylinder 30 is inserted into the cylinder insertion opening. In the cylinder 30, the entire small diameter portion 41 and the middle part of the large diameter portion 40 are embedded in the operation portion 12, and the step portion 44 comes into contact with the step portion formed in the cylinder insertion opening, whereby the cylinder 30 of the cylinder 30 Insertion is restricted. Specifically, the portion of the large-diameter portion 40 above the formed portion of the guide cam 46 (above the embedded boundary line L1 shown by the alternate long and short dash line in FIG. 4) is exposed on the outer surface of the operating portion 12. The operation unit 12 is formed with an opening portion 81 facing sideways at a position adjacent to the cylinder insertion opening (see FIG. 9). The position of the cylinder 30 is determined so that the side recess 45 faces the open portion 81 side. The open portion 81 is open to a region below the embedding boundary line L1 shown in FIG. 4, and is formed to a depth that exposes the entire side recess 45. Then, the cylinder 30 is fixed to the operation unit 12 by a predetermined fixing means (screw, adhesive, etc.).

In the operation unit 12, the suction pipeline 16 (FIG. 1) is connected to the pipeline connection portion 43 of the cylinder 30. The suction pipeline 16 can be connected to the pipeline connection portion 43 at a stage before the cylinder 30 is inserted into the operation portion 12.

When forming the button unit 80, the sleeve ring 35 is attached to the outside of the outward protrusion 56 of the first tubular portion 50 of the valve body 31. When the sleeve ring 35 is inserted into the outward protrusion 56 from above to below, the fitting protrusion 74 fits into the fitting recess 58, and the sleeve ring 35 is inserted / removed from the valve body 31 in the insertion / removal direction. Movement is restricted (see FIGS. 2, 3, and 5). As shown in FIG. 4, in this state, the lower end portion of the sleeve ring 35 is located adjacent to the upper portion of the second tubular portion 51 in the insertion / removal direction.

Subsequently, the piston 32 is inserted into the internal space 52 of the first tubular portion 50 of the valve body 31, and the compression spring 34 is inserted into the spring support groove 57. Further, as shown in FIG. 5, the head portion 62 of the piston 32 is inserted into the central portion 65 of the button 33. By this insertion, the relative movement of the piston 32 and the button 33 in the radial direction is restricted. Further, the retaining portion 65a is fitted into the groove-shaped portion between the head portion 62 and the flange portion 63, and the relative movement of the piston 32 and the button 33 in the insertion / removal direction is restricted. That is, the piston 32 and the button 33 are integrated. Further, if necessary, the piston 32 and the button 33 are fixed with an adhesive or the like.

When the piston 32 and the button 33 are combined, the upper end portion of the compression spring 34 comes into contact with the upper wall portion 66 of the button 33, and the compression spring 34 is held between the lower surface of the upper wall portion 66 and the bottom surface of the spring support groove 57. (See Fig. 5). The compression spring 34 is supported so as to be able to expand and contract in the insertion / detachment direction without causing buckling by surrounding the tubular portion inside the spring support groove 57 and the central portion 65. The compression spring 34 urges the piston 32 and the button 33 upward with respect to the valve body 31, and the movable valve 64 abuts on the tapered inner surface 54 by this urging force (see FIG. 5). The position of the movable valve 64 in contact with the inner surface of the taper 54 is set as the shutoff position, and the position of the movable valve 64 away from the inner surface of the taper 54 is set as the communication position. The sleeve ring 35 is located on the outer diameter side of the compression spring 34 together with the outer peripheral wall portion 67 of the button 33 to prevent the compression spring 34 from being exposed to the outside (see FIGS. 2, 3, and 5).

With the button unit 80 assembled as described above, the sleeve ring 35 is rotatably supported with respect to the outer peripheral surface of the outward protruding portion 56 about the axis X (FIGS. 2 and 3). As shown in FIG. 6, when the sleeve ring 35 is attached to the outside of the outward protrusion 56, the rotation control protrusion 59 enters the rotation range limiting groove 73. The sleeve ring 35 can be rotated within a range until the rotation restricting projection 59 abuts on one end 73a and the other end 73b of the rotation range limiting groove 73.

FIG. 6 shows a state in which the rotation restricting projection 59 is adjacent to the end portion 73a of the rotation range limiting groove 73 located on the inner diameter side of the thick portion 71. The sleeve ring 35 is assembled to the outward protrusion 56 at the position shown in FIG. At this time, as shown in FIG. 4, the thick-walled portion 71 and the second tubular portion 51 are located side by side in the insertion / removal direction, and the downward protrusion 72 protruding downward from the thick-walled portion 71 is the second tubular portion. It is in a circumferential position close to 51.

From the state of FIG. 6, when the sleeve ring 35 is rotated in the direction in which the rotation restricting protrusion 59 approaches the end portion 73b (the removal direction indicated by the arrow line F1 in FIGS. 6 and 7B), the downward protrusion 72 Comes into contact with the second tubular portion 51 and a resistance to rotation acts. That is, when the sleeve ring 35 is attached to the valve body 31 in the positional relationship in the circumferential direction shown in FIGS. 4 and 6, the movement in the insertion / removal direction is restricted (the fitting protrusion 74 is in the fitting recess 58). At the stage of fitting), resistance is also applied to the rotation of the sleeve ring 35 with respect to the valve body 31, and the button unit 80 is in a state where the positional relationship of each member is stable. By aligning the second tubular portion 51 of the valve body 31 with the thick portion 71 of the sleeve ring 35 as an index, the appropriate mounting position of the sleeve ring 35 can be easily identified.

As shown in FIGS. 4 and 5, the button unit 80 is inserted into the cylinder 30 with the circumferential positions of the second tubular portion 51 and the thick portion 71 aligned with each other with respect to the lateral recess 45. .. The button unit 80 is inserted downward from the upper end opening 30a of the cylinder 30 with the end portion of the first tubular portion 50 of the valve body 31 opposite to the outward protruding portion 56 at the head. The outer diameter size of the portion of the first tubular portion 50 below the outward protruding portion 56 is slightly larger than the inner diameter size of the cylinder inner space 42. Therefore, the first tubular portion 50 is press-fitted into the cylinder inner space 42 with a predetermined load, and the space between the cylinder inner space 42 and the first tubular portion 50 is sealed. An O-ring made of an elastic material is attached to the outer peripheral surface of the first tubular portion 50 (such as an annular groove portion near the lower end of the first tubular portion 50 shown in FIGS. 2 to 5) to form an O-ring. A configuration may be adopted in which the space 42 in the cylinder is sealed via a ring.

When a predetermined amount of the button unit 80 is inserted into the cylinder 30, the second tubular portion 51 enters the side recess 45. The opening width of the introduction portion 45a in the side recess 45 is larger than the outer diameter size of the second tubular portion 51, and even if the cylinder 30 and the button unit 80 are slightly displaced in the circumferential direction, the introduction portion 45a provides the second. The second tubular portion 51 can be guided into the lateral recess 45 by guiding the tubular portion 51. The opening width of the constant width portion 45b is substantially the same as the outer diameter size of the second tubular portion 51, and the second tubular portion 51 advances downward along the constant width portion 45b. The opening width of the narrow portion 45c is smaller than the outer diameter size of the second tubular portion 51, and when the second tubular portion 51 reaches the narrow portion 45c, resistance to insertion is added downward. When a force resisting this resistance is applied and the insertion is continued, the second tubular portion 51 made of a material having a lower rigidity than the cylinder 30 passes through the narrow portion 45c while elastically deforming in the radial direction. Since the inner surface of the lateral recess 45 from the constant width portion 45b to the narrow portion 45c has a tapered shape along the outer peripheral surface of the second tubular portion 51, the second tubular portion 51 in the diameter reduction direction Elastic deformation can be smoothly generated.

The portion of the first tubular portion 50 below the outward protruding portion 56 can be inserted into the cylinder inner space 42, and the outward protruding portion 56 is in contact with the upper end of the cylinder 30 (see FIGS. 2 and 3). ) Restricts insertion into the cylinder space 42. In this state, the outward projecting portion 56 projects upward from the cylinder inner space 42.

When the second tubular portion 51 passes through the narrow portion 45c against the resistance at the time of insertion, the second tubular portion 51 is fitted into the fitting holding portion 45d as shown in FIG. 7A. Since the fitting holding portion 45d has an inner surface shape along the outer peripheral surface of the second tubular portion 51, the second tubular portion 51 fits in the fitting holding portion 45d in a stable state. The movement of the second tubular portion 51 in the circumferential direction or downward is regulated by the inner surface of the fitting holding portion 45d. Further, since the narrow portion 45c is provided in the opening portion above the fitting holding portion 45d, resistance is added to the detachment of the second tubular portion 51 upward from the fitting holding portion 45d.

When the button unit 80 is inserted into the cylinder 30 until the second tubular portion 51 is fitted into the fitting holding portion 45d, as shown in FIGS. 7A and 7B, the button unit 80 is on the button unit 80 side. The three guide cams 75 provided are fitted to the three guide cams 46 provided on the cylinder 30 side, respectively. More specifically, the top surface 75a faces the top surface 46a, the insertion / removal direction surface 75b faces the insertion / removal direction surface 46b, and the inclined surface 75c faces the inclined surface 46c. As described above, the second tubular portion 51 of the valve body 31 and the thick portion 71 of the sleeve ring 35 also function as position indexes for fitting each guide cam 46 and each guide cam 75. At the steps shown in FIGS. 7 (A) and 7 (B), the assembly of the button unit 80 to the cylinder 30 is completed. In this state, the button 33 and the sleeve ring 35 are located above the embedding boundary line L1 (FIG. 4) and can be operated from the outside.

In the assembled state of FIG. 7A, the rotation of the valve body 31 is restricted by the contact of the second tubular portion 51 with the inner surface of the side recess 45 (fitting holding portion 45d). Further, the guide cams 46 and 75 can be removed by contacting the insertion / removal direction surfaces 46b and 75b (see FIG. 7) and by contacting the end portion 73a of the rotation range limiting groove 73 with the rotation regulating protrusion 59 (see FIG. 6). The rotation of the sleeve ring 35 in the direction opposite to the direction F1 (FIGS. 6 and 7 (B)) is restricted. Further, the contact between the lower protrusion 72 and the second tubular portion 51 imparts resistance to the rotation of the sleeve ring 35 in the removal direction F1. Therefore, in the button unit 80, the valve body 31 is restricted from rotating forward and reverse with respect to the cylinder 30, and the sleeve ring 35 is in a state in which resistance is added to the rotation in the removal direction F1.

FIG. 2 shows the internal structure of the suction operation device 19 in the assembled state of FIG. 7A. In the suction operation device 19, the cylinder inner space 42 and the internal space 52 form a flow path in the insertion / removal direction, and the internal space 53 forms a flow path in the radial direction.

With the button unit 80 assembled to the cylinder 30, the second tubular portion 51 projects laterally to the operating portion 12 through the side recess 45 (fitting holding portion 45d) and the opening portion 81 (see FIG. 9). Although specific illustration is omitted, a suction pipe line 23 (FIG. 1) is connected to the suction source connection port 60 (FIGS. 2 and 3), and the suction force of the suction source 22 is applied to the internal space 53 through the suction pipe line 23. Can affect

When the piston 32 and the button 33 are not pressed, the suction operation device 19 is in the state shown in FIGS. 2 and 7 (A). In this state, the piston 32 and the button 33 that receive the urging force of the compression spring 34 increase the amount of protrusion upward, and the movable valve 64 is pressed against the tapered inner surface 54 by the urging force of the compression spring 34 to shut off. Held in position. The movable valve 64 at this shutoff position blocks the fluid flow between the cylinder inner space 42 and the inner space 52. On the other hand, a gap for leakage is formed between the outer peripheral wall portion 67 of the button 33 and the sleeve ring 35, and between the shaft portion 61 of the piston 32 and the inner peripheral surface of the first tubular portion 50. The outside air is sucked from the leak gap by the suction force acting on the internal space 53.

As shown in FIG. 3, when the piston 32 and the button 33 are pressed downward against the urging force of the compression spring 34, the movable valve 64 moves from the shutoff position in contact with the tapered inner surface 54 to the tapered inner surface 54. On the other hand, it moves to a communication position that is separated downward, and the cylinder inner space 42 and the internal space 52 communicate with each other to enable fluid flow. On the other hand, the flange portion 63 of the piston 32 closes the vicinity of the upper end of the internal space 52, and the inflow of outside air into the internal space 52 from the gap between the button 33 and the sleeve ring 35 is blocked. Therefore, the suction force of the suction source 22 reaches the suction pipeline 16 via the internal space 53, the internal space 52, the cylinder internal space 42, and the pipeline connection portion 43, and suction from the suction port 18 can be performed. it can.

When the pressure on the piston 32 and the button 33 is released, the movable valve 64 moves upward by the urging force of the compression spring 34 and returns to the shutoff position (FIG. 2) in which the movable valve 64 abuts on the tapered inner surface 54. As a result, the suction force from the suction source 22 does not reach the suction pipe line 16 and the suction port 18.

In the suction operation device 19, the button unit 80 can be removed after using the endoscope 10, the cylinder 30 and the suction pipe line 16 can be cleaned, and the button unit 80 can be replaced. The button unit 80 is removed by rotating the sleeve ring 35 in the removal direction F1 shown in FIGS. 6 and 7 (A).

As shown in FIG. 9, the rotation operation of the sleeve ring 35 can be performed by gripping the gripping surfaces 70a, 70b, and 70c with fingers. In the endoscope 10, when the direction in which the insertion portion 11 extends with respect to the operation portion 12 is forward and the opposite direction is rearward, the gripping surface 70b faces approximately forward in the assembled state of the button unit 80 described above. , The curved surface 70d faces generally rearward. Further, the gripping surface 70a and the gripping surface 70c face sideways of the operating portion, and the thick portion 71 faces diagonally rearward. Therefore, when the sleeve ring 35 is to be gripped with two fingers (thumb and index finger) from both sides of the operation unit 12 as shown in FIG. 9, the gripping surface 70a and the gripping surface 70c are in positions where they can be easily touched by fingers. Further, when gripping with three fingers or changing the angle of the hand, the fingers may be placed on the front gripping surface 70b. By gripping the gripping surfaces 70a, 70b, and 70c having a flat surface or a flat shape close to a flat surface, the rotational force can be efficiently transmitted to the sleeve ring 35, and excellent operability can be obtained.

On the other hand, as shown in FIGS. 1 and 9, a push button switch 27 is arranged behind the suction operation device 19, and access to the sleeve ring 35 from the rear is easily restricted by the push button switch 27. In response to this, a curved surface 70d is selected for the side of the sleeve ring 35 facing rearward instead of a flat shape for improving gripability. As shown in FIG. 6, a rotation range limiting groove 73 is formed on the inner diameter side of the curved surface 70d, and by making the outer surface of this region a curved surface 70d, the wall thickness is also formed in the formed region of the rotation range limiting groove 73. Is not insufficient, and the strength of the sleeve ring 35 can be ensured.

As described above, when the sleeve ring 35 is to be rotated in the removal direction F1, resistance is received by the contact between the lower protrusion 72 and the second tubular portion 51. When a predetermined force or more is applied to the removal direction F1 against this resistance, the sleeve ring 35 starts rotating while the lower protrusion 72 rides on the outer peripheral surface of the second tubular portion 51.

Due to the rotation of the sleeve ring 35 in the removal direction F1, the inclined surface 75c of the guide cam 75 changes the contact position of the guide cam 46 with respect to the inclined surface 46c, as shown in FIGS. 8A and 8B. .. Since the inclined surface 46c and the inclined surface 75c each have an inclined shape that changes their positions upward (in the detaching direction) as they proceed in the removing direction F1, the sleeve ring 35 rotates in the removing direction F1 with respect to the cylinder 30. While moving upwards.

Three guide cams 46 of the cylinder 30 and three guide cams 75 of the sleeve ring 35 are provided at different positions in the circumferential direction. Further, each guide cam 76 and each guide cam 75 generate an upward force by sliding contact between the inclined surface 46c and the inclined surface 75c which are substantially parallel to each other. Therefore, when the sleeve ring 35 is rotated, it can be efficiently moved upward with high stability without causing inclination.

Due to the fitting relationship between the fitting recess 58 and the fitting protrusion 74, the valve body 31 moves upward together with the sleeve ring 35. Further, the piston 32 and the button 33 also move upward along with the valve body 31. That is, the entire button unit 80 moves upward. When the valve body 31 moves upward, the second tubular portion 51 abuts on the narrow portion 45c and receives resistance. When the rotation of the sleeve ring 35 in the removal direction F1 is continued against this resistance, as shown in FIG. 8A, the second tubular portion 51 made of a material having a lower rigidity than the cylinder 30 is reduced in diameter. It passes through the narrow portion 45c while being elastically deformed. When the second tubular portion 51 completely passes through the narrow portion 45c and enters the constant width portion 45b, the movement resistance with respect to the second tubular portion 51 becomes smaller, and the button unit 80 is passed through the upper end opening 30a of the cylinder 30. It can be pulled out upwards.

By removing the button unit 80 as described above, the inside of the suction pipe line 16 and the cylinder 30 can be easily cleaned. In the button unit 80, the sleeve ring 35 is supported on the outside of the outward protrusion 56 protruding from the cylinder 30. Further, the guide cam 46 for moving the sleeve ring 35 in the detaching direction (upward) of the button unit 80 is an end face cam provided at the upper end portion of the cylinder 30. Therefore, unevenness is not formed on the inner peripheral surface of the cylinder 30 due to the effect of providing the sleeve ring 35, and the inside of the cylinder 30 has a smooth shape that is easy to clean (FIGS. 2, FIG. 3, and FIG. 5). reference).

The button unit 80 of the present embodiment is a type that is replaced every time it is used. The button unit 80 removed from the cylinder 30 is discarded, and after cleaning the suction pipe line 16 and the cylinder 30, a new button unit 80 is attached to the cylinder 30.

As described above, in the suction operation device 19 of the present embodiment, the valve body 31 constituting the suction flow path is supported by the cylinder 30 in a state where rotation is restricted, and is provided separately from the valve body 31. The button unit 80 including the valve body 31 is removed by rotating the sleeve ring 35. The sleeve ring 35 is an annular body that surrounds the outward protrusion 56 of the valve body 31, and has a portion that protrudes long in the radial direction, such as the second tubular portion 51 of the valve body 31 and the suction source connection port 60. Not. Further, the sleeve ring 35 is not connected to an external device such as the suction pipe line 23, and there is no possibility that a strong force is applied from the outside when the endoscope 10 is routed. Therefore, the sleeve ring 35 does not unintentionally rotate in the removal direction F1, and the assembled state of the button unit 80 can be reliably maintained when the endoscope 10 is used.

Further, since the sleeve ring 35 itself is also configured to receive resistance to rotation in the removal direction F1 due to the contact between the lower protrusion 72 and the second tubular portion 51, it is possible to prevent an unintended rotation operation of the sleeve ring 35. , The assembled state of the button unit 80 can be maintained more reliably.

The sleeve ring 35 is supported on the outside of the outward protruding portion 56 protruding from the cylinder 30, and is in contact with the cylinder 30 via end face cams (guide cams 46, 75) facing in the insertion / removal direction. Therefore, as described above, the inside of the cylinder 30 is not provided with elements related to the support and movement guidance of the sleeve ring 35, and the inner peripheral surface of the cylinder inner space 42 can be made into a smooth shape. .. When the inner peripheral surface of the cylinder inner space 42 has a smooth shape, there is an advantage that dirt is less likely to adhere and cleaning work can be easily performed.

Although the above description has been made based on the illustrated embodiment, the present invention is not limited to the specific embodiment. The present invention includes a support provided on the main body of the endoscope (corresponding to the cylinder 30 of the embodiment) and an insertable body that can be inserted into and removed from the support and is held in an inserted state (corresponding to the valve body 31 of the embodiment). It suffices as long as it has a basic configuration in which the insertion body is released from the holding by the rotation operation of the release operation member (corresponding to the sleeve ring 35 of the embodiment) and is separated from the support. The type of device to be used can be arbitrarily selected.

For example, although the above embodiment is applied to the suction operation device 19, it is also possible to apply the operation device for air supply and water supply. The operation device for air supply and water supply has a valve structure in which the opening / closing state is changed by an external pressing operation, such as the relationship between the valve body 31 and the piston 32 of the suction operation device 19, and constitutes this valve structure. A configuration as in the above embodiment can be used for mounting and removing the member.

More specifically, the operation device for air supply / water supply has an air supply / water supply button that can be pressed against a cylinder supported by an operation unit of the endoscope. In the endoscope, an air supply water pipe line for connecting a nozzle and a cylinder provided at the tip of an insertion portion, and an air supply line and a water supply line for connecting a total air supply water source and a cylinder are provided. A leak hole is formed in the air supply water supply button, and when the air supply water supply button is not touched (the leak hole is not blocked), the air sent from the air supply water supply source to the cylinder via the air supply pipeline is sent from the leak hole. Exit to the outside. If the leak hole of the air supply / water supply button is closed with a finger or the like, air is supplied to the air supply / water supply pipeline, and air can be ejected from the nozzle. In addition, when the air supply / water supply button is not pushed in, the water supply from the water supply line to the air supply / water supply line is blocked, and when the air supply / water supply button is pushed in, the water supply line and the air supply / water supply line are communicated with each other and the nozzle is used. Water can be spouted from. The nozzle is suitable for the objective window provided at the front of the image pickup lens system and the light distribution window provided at the front of the lighting means, and the cleaning water is ejected from the nozzle to clean the objective window and the light distribution window. After cleaning, air can be ejected from the nozzle to remove water droplets from the objective window and the light distribution window. It is also possible to apply the present invention as a configuration for removing a button unit including an air supply / water supply button from a cylinder in an operation device for air supply / water supply that constitutes such an air supply / water supply system.

Further, the present invention can be applied to other than the type of operation device such as the suction operation device 19 and the air supply / water supply operation device that changes the flow state of the fluid by the pressing operation.

In the above embodiment, a guide cam 46 and a guide cam 75, which are end face cams facing each other in the insertion / removal direction, are used as a mechanism for generating a force in the detachment direction from the rotation of the sleeve ring 35. Unlike this, a peripheral cam provided between the inner peripheral surface of the sleeve ring 35 and the outer peripheral surface of the cylinder 30 (particularly the large diameter portion 40) is used to generate a force in the detaching direction from the rotation of the sleeve ring 35. Etc. are also possible. If the sleeve ring 35 is positioned on the outer diameter side of the large diameter portion 40 of the cylinder 30 in order to use the peripheral cam, the diameter of the sleeve ring 35 may be larger than that of the above embodiment. The same effect as that of the above embodiment can be obtained in that the inner peripheral surface of the inner space 42 can be kept in a smooth shape.

Further, in the above embodiment, the guide cam 46 on the cylinder 30 side and the guide cam 75 on the sleeve ring 35 side have inclined surfaces 46c and 75c that are parallel to each other, but one of the cylinder 30 and the sleeve ring 35. It is also possible to provide an inclined surface only on the other side and a convex cam follower that abuts on the inclined surface on the other side.

Further, the inclined surfaces 46c and 75c of the above embodiment have a shape in which the amount of movement in the detachment direction with respect to the unit rotation amount of the sleeve ring 35 is constant, but the amount of movement in the detachment direction according to the rotation position of the sleeve ring 35. It is also possible to set a non-linear cam surface shape that changes. As an example, when the rotation resistance with respect to the sleeve ring 35 is large, the movement amount in the detachment direction with respect to the unit rotation amount of the sleeve ring 35 is suppressed to a small value, and when the rotation resistance is small, the movement in the detachment direction with respect to the unit rotation amount of the sleeve ring 35 is suppressed. The cam surface shape may be large so as to increase the amount. As a result, the difference in operating load due to the difference in the rotational position of the sleeve ring 35 becomes small.

In the above embodiment, as a holding means for holding the valve body 31 against the cylinder 30, a second tubular portion 51 protruding in the radial direction from the valve body 31 and a lateral recess recessed in a part of the cylinder 30 Although 45 is used, it is also possible to hold the insert with a different configuration.

10 Endoscope 11 Insertion part 12 Operation part 13 Universal tube 14 Video connector 15 Processor 16 Suction line (first line)
18 Suction port 19 Suction operation device 22 Suction source 23 Suction line (second line)
27 Push button switch 30 Cylinder (support)
30a Upper end opening 31 Valve body 32 Piston (pressing operation member)
33 buttons (pressing operation member)
34 Compression spring (urging means)
35 Sleeve ring (detachment operation member)
40 Large diameter part 40a Inner cylindrical part 41 Small diameter part 41a Tapered part 42 Space inside the cylinder (space inside the support)
43 Pipeline connection 44 Step 45 Side recess (holding means)
45a Introductory part 45b Constant width part 45c Narrow part (insertion / removal resistance imparting part)
45d Fitting holding part 46 Guide cam 46a Top surface 46b Insertion / removal direction surface 46c Inclined surface (disengagement guide surface)
50 1st tubular part 51 2nd tubular part (holding means, radial extension part)
52 Internal space (insertion internal space)
53 Internal space (insertion internal space)
54 Taper inner surface 56 Outer protrusion 57 Spring support groove 58 Fitting recess (insertion / removal direction regulation part)
59 Rotation regulation protrusion (rotation range limiting part)
60 Suction source connection port 61 Shaft part 62 Head 63 Flange part 64 Movable valve 65 Central part 65a Retaining part 66 Upper wall part 67 Outer wall part 70a Gripping surface 70b Gripping surface 70c Gripping surface 70d Curved surface 71 Thick part 72 Lower Protrusion (rotational resistance imparting part)
73 Rotation range limiting groove (rotation range limiting part)
74 Fitting protrusion (insertion / removal direction regulation part)
75 Guide cam 75a Top surface 75b Insertion / removal direction surface 75c Inclined surface (disengagement guide surface)
80 button unit 81 open part

Claims (9)

A support provided in the main body of the endoscope and having a support internal space that opens to the outer surface side of the endoscope, and a support.
An inserter that can be inserted into and removed from the support body space through the opening and is held by the holding means in the inserted state.
Supported by the insert, it said rotatable about the axis facing insertion and removal direction of the insert to the support body space, relative to the insert in a state in which the insert is held by the holding means A detachment operation member that applies a moving force in the detachment direction from the support to the insert body to release the holding by the holding means when rotating in the removal direction.
Equipped with a,
The insert has an outward protruding portion that projects outward from the supporting body space while being held by the holding means.
The detachment operation member is located outside the outward protrusion in the radial direction about the axis, can rotate in the removal direction with respect to the outward protrusion, and restricts movement in the insertion / removal direction. An endoscope operating device characterized by being supported . The detachment operation member is an annular body that surrounds the outward protrusion, and the outward protrusion and the detachment operation member are opposed to each other in the radial direction.
A rotation range limiting portion that limits the range of rotation of the detachment operating member with respect to the insert.
An insertion / removal direction regulating unit that regulates the relative movement of the insertion body and the detachment operation member in the insertion / removal direction,
The endoscope operating device according to claim 1 . The endoscope operating device according to claim 2 , further comprising at least one flat gripping surface on the outer peripheral surface of the detachment operating member. At least one of the detachment operation member and the support is provided with a detachment guide surface that changes the position in the insertion / detachment direction as it advances in the rotation direction about the axis , and the detachment operation member is provided through the detachment guide surface. And the support come into contact with each other.
According to claims 1 to 3 , when the detachment operation member rotates in the detachment direction, the contact position between the detachment operation member and the support changes along the detachment guide surface to generate a moving force in the detachment direction. The operating device for the endoscope according to any one of the above. The operating device for an endoscope according to claim 4 , wherein the detaching operation member and the support have a portion facing each other in the insertion / removal direction, and the detachment guide surface is provided on the facing portion. A support provided in the main body of the endoscope and having a support internal space that opens to the outer surface side of the endoscope, and a support.
An inserter that can be inserted into and removed from the support body space through the opening and is held by the holding means in the inserted state.
It is supported by the insert body and can rotate about an axis oriented in the insertion / removal direction of the insert body into the space inside the support body, and the insert body is held by the holding means with respect to the insert body. A detachment operation member that applies a moving force in the detachment direction from the support to the insert body to release the holding by the holding means when rotating in the removal direction.
With
The holding means is
A recess provided in the support that extends in the insertion / removal direction and communicates with the opening.
A radial extension portion provided on the insert body that projects radially around the axis and fits into the recess.
With
An endoscope operating device characterized in that an insertion / removal resistance imparting portion that imparts resistance to the movement of the radial extension portion in the insertion / removal direction is provided at an intermediate position of the recess in the insertion / removal direction. .. The operating device for an endoscope according to claim 6 , wherein the detaching operation member has a rotation resistance imparting portion that abuts on the radial extension portion and receives rotational resistance when rotating in the removal direction. .. A support provided on the main body of the endoscope and having a support internal space that opens to the outer surface side of the endoscope, and a support.
An inserter that can be inserted into and removed from the support body space through the opening and is held by the holding means in the inserted state.
It is supported by the insert body and can rotate about an axis oriented in the insertion / removal direction of the insert body into the space inside the support body, and the insert body is held by the holding means with respect to the insert body. A detachment operation member that applies a moving force in the detachment direction from the support to the insert body to release the holding by the holding means when rotating in the removal direction.
With
The insert has an internal space inside the insert.
It has a movable valve that is movably supported by the insertion body in the insertion / removal direction and moves to a blocking position that blocks fluid flow between the support body space and the insertion body space and a communication position that allows fluid flow. Equipped with a pressing operation member,
A urging means for urging the pressing operation member to the blocking position is provided.
The pressing operation member is an endoscope operating device characterized in that it moves from the blocking position to the communicating position by a pressing operation. It is provided with a first pipe line connected to the support body space and a second pipe line connected to the insertion body space, and the first pipe line is connected to a suction port provided in the insertion portion of the endoscope. The endoscope operating device according to claim 8 , wherein the second conduit is connected to a suction source.

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