JP2005177080A - Plug of treatment tool for endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable plug of a treatment tool for an endoscope where inserting and removing force is small regardless of the diameter of the treatment tool and back flow leakage from inside of a body cavity is prevented surely. <P>SOLUTION: The plug of the treatment tool for the endoscope is provided with a housing 8, a first plug 9 and a second plug 10. The housing 8 has: a plug fitting part 13 to which the plug of the treatment tool is inserted at an upper end; an engaging part 19 to be fitted to a channel opening 6 at a lower end; a knob part 14 grasped when removing the plug from the channel opening; and a notch groove 15 which is broken down by pull-up operation of the knob part 14. The first plug 9 is internally mounted to the housing 8 to closely contact with the channel opening and has a first treatment tool insertion hole 11 through which the treatment tool is inserted. The second plug 10 is internally mounted to the plug fitting part of the housing 8 to closely contact with the opening of the first plug 9 and has a second treatment tool insertion hole 25 through which the treatment tool is inserted. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an endoscope treatment instrument plug that is attached to a channel opening of a treatment instrument channel of an endoscope and that hermetically inserts treatment instruments inserted into the treatment instrument channel from the channel opening.

  Conventionally, in observation and treatment in a body cavity using an endoscope, a medical solution is injected into a body cavity from a treatment tool channel provided in the endoscope, or a treatment tool is inserted to excise and collect a lesion site. Action is being taken.

  During the treatment by the endoscope, dirt and air in the body cavity may flow backward through the treatment instrument channel due to a change in pressure in the body cavity and leak out from the channel opening of the treatment instrument channel. Therefore, a stopper is attached to the channel opening of the treatment instrument channel of the endoscope to prevent leakage of dirt and air that flows back through the treatment instrument channel.

  The plug attached to the channel opening of the treatment instrument channel can be reused after being used after cleaning and disinfection (reusable type), or once attached to the channel opening of the treatment instrument channel. There is a non-reusable type (disposable type) that is destroyed when removed from the channel opening and cannot be used again.

The reuse type of this plug body is indispensable for cleaning and disinfection every time it is used, and therefore, the management of cleaning and disinfection becomes complicated, and a disposable type plug body is preferred. For example, as disclosed in Patent Document 1, this disposable type plug body includes a plug body composed of an upper plug body and a lower plug body formed of an elastic member, and is relatively smaller than the plug body. A plug frame that is formed of a hard member and stores and holds the plug body, an engagement portion that is formed on the plug frame and engages the channel opening of the treatment instrument channel, and is formed on the plug frame. It is comprised from the fracture | rupture part fractured | ruptured by the force when removing from a channel opening, and the opening part connected to this fracture | rupture part and formed in the plug frame.
Japanese Utility Model Publication No. 3-101908.

  The reuse-type plug body proposed in Patent Document 1 is attached to the channel opening of the treatment instrument channel with the outer periphery of the plug body including the upper plug body and the lower plug body covered with a plug frame. For this reason, especially when using a treatment tool with a large outer diameter, the shape of the treatment tool insertion slit provided in the stopper body is not easily deformed, for example, compared to a reuse type formed only of a rubber member. Thus, there is a problem that the insertion / removal force when the treatment tool is inserted and withdrawn becomes large, the operation of inserting the treatment tool is heavy, and the operation efficiency is lowered.

  The present invention has been made in view of such circumstances, and is a disposable treatment instrument plug for an endoscope that has a small insertion / removal force regardless of the outer diameter of the treatment instrument and can reliably prevent backflow leakage from inside the body cavity. It is intended to provide.

  The endoscope treatment tool plug of the present invention is a endoscope treatment tool plug attached to a channel opening of a treatment tool channel of an endoscope, and has a first treatment tool insertion port through which the treatment tool is inserted. 1 plug body, having a plug body mounting portion, mounted in the channel opening, and internally installing the first treatment instrument insertion port of the first plug body so as to face the channel opening, and the channel It has a housing provided with a breakable portion that can be broken when removed from the opening, and a second treatment instrument insertion port through which the treatment instrument is inserted, and the second treatment instrument insertion port and the first plug body And a second plug body detachably mounted on the plug body mounting portion of the housing so as to face each other.

  A knob portion used when removing from the channel opening is provided on the outside of the housing of the endoscope treatment instrument plug of the present invention, and the fracture portion of the housing is broken by operation of the knob portion. And

  When the second plug body of the endoscope treatment instrument plug of the present invention is mounted on the plug body mounting portion of the housing, the second plug body is held at both ends without exceeding the fracture portion of the housing. It is characterized by.

  When the second plug body of the endoscope treatment tool plug of the present invention is mounted on the plug body mounting portion of the housing, the second plug body is held at both ends beyond the fracture portion of the housing. It is characterized by being.

  The second plug body of the treatment instrument plug for an endoscope of the present invention has a holding portion that is held at a position avoided from the insertion range of the plug body mounting portion of the housing when removed from the housing. It is characterized by.

  The treatment instrument plug for an endoscope of the present invention is used as a disposable type treatment instrument plug, and has a relatively small insertion / removal force regardless of the outer diameter of the treatment instrument and can maintain the airtightness of the treatment instrument channel. A stopper can be provided.

  INDUSTRIAL APPLICABILITY The present invention can provide an endoscope treatment tool plug that allows easy insertion / removal operation of a treatment tool regardless of the outer diameter of the treatment tool and that has high airtightness between the treatment tool and the treatment tool channel.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. An embodiment of an endoscope treatment tool plug according to the present invention will be described with reference to FIGS. 1 to 9.
FIG. 1 is a cross-sectional view showing a state in which a treatment instrument plug, which is a first embodiment of an endoscope treatment instrument plug according to the present invention, is attached to a channel opening of a treatment instrument channel, and FIG. 2 shows an endoscope according to the present invention. Sectional drawing which shows the state which removed the 2nd plug body of the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for mirrors from the state of FIG. 1, FIG. 3 is the endoscope which concerns on this invention shown in FIG. The top view which looked at the treatment tool stopper which is 1st Embodiment of the treatment tool stopper from the upper side, FIG. 4 is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention shown in FIG. The side view which looked at the treatment tool plug from the arrow Y direction in the figure, FIG. 5 is operating the 2nd plug body of the treatment tool plug which is 1st Embodiment of the treatment tool plug for endoscopes which concerns on this invention. FIG. 6 is a front view of an endoscope in which the endoscope treatment tool plug according to the present invention is used, and FIG. 7 is a first embodiment of the endoscope treatment tool plug according to the present invention. Sectional drawing which shows the 1st modification of the 1st plug body of the treatment tool plug which is this, FIG. 8 is the 1st plug body of the treatment tool plug which is 1st Embodiment of the treatment tool plug for endoscopes which concerns on this invention. FIG. 9 is a cross-sectional view showing a first modification of the second plug body of the treatment instrument stopper according to the first embodiment of the endoscope treatment instrument stopper according to the present invention. is there.

  First, an endoscope in which the endoscope treatment tool plug according to the present invention is used will be described with reference to FIG. The endoscope 2 is mainly composed of an operation unit 3 held by an operator and a long and flexible insertion unit 4. The operation unit 3 includes a channel cord 6 for inserting a treatment instrument 5 such as forceps and various treatment instruments into a treatment instrument channel, a universal cord incorporating a light guide connected to a light source device (not shown), and a diagram. Although not provided, a bending operation knob for remotely bending the bending portion provided at the distal end portion of the insertion portion 4 and a water supply / air supply base for connecting a water supply / air supply pump are provided. A treatment instrument plug 1 according to the present invention, which will be described later, is attached to the channel opening 6 of the operation unit 3, and the treatment instrument plug 1 maintains the airtightness between the treatment instrument channel and the outside when the treatment instrument 5 is inserted and removed. ing.

  The insertion portion 4 has a proximal end connected to the operation portion 3 and a distal end portion and a bending portion provided at the distal end. Inside the insertion portion 4, a treatment instrument channel 7 communicating with the channel opening 6 of the operation portion 3 is provided on the distal end surface of the distal end portion. That is, the treatment instrument 5 inserted from the channel opening 6 is inserted through the treatment instrument channel 7 and led out from the distal end surface of the distal end portion. In addition, a light guide, a water / air supply channel, and the like are provided inside the insertion portion 4 and communicated to the distal end surface of the distal end portion.

  Next, an endoscope treatment tool stopper according to the present invention will be described with reference to FIGS. The treatment instrument plug 1 includes, for example, a housing 8 formed of a somewhat elastic plastic material such as polyethylene, a first plug 9 formed of a material such as silicon rubber that is more elastic than the housing 8, and silicon rubber. It is comprised from the 2nd stopper 10 formed with materials, such as.

  The housing 8 is formed in a substantially cylindrical shape having an upper end wall 12, and the upper end wall 12 is provided with a plug body attaching portion 13 to which a second plug body 10 described later is attached and detached. In addition, a knob portion 14 that extends to the side of the housing 8 is integrally formed at one end portion of the upper end wall 12.

  Protruding holding portions 18a and 18b for fitting and holding the outer periphery of the first plug body 9 to be described later are formed on the inner peripheral surface of the cylindrical intermediate portion of the housing 8 all or partly. Yes. On the inner peripheral surface of the lower end of the housing 8, a protruding locking portion 19 for attaching to the channel opening 6 of the treatment instrument channel 7 of the endoscope 2 is formed all around or partially. The protrusion-shaped locking portion 19 has an inclined surface 20 on the opening side of the lower end of the housing 8, and the inclined surface 20 can be pressed and attached to the outer periphery of the channel opening 6.

  That is, when the housing 8 is pushed into the channel opening 6, the locking portion 16 can be locked over the flange-shaped mouth of the channel opening 6, and once this locking portion 19 is locked. The housing 8 is prevented from being detached from the channel opening 6. The shape of the locking portion 19 and the shape of the mouth of the channel opening 6 are not limited to the shape of this embodiment, and the housing 8 and the channel opening 6 can be easily attached and cannot be removed after the attachment. Any shape is acceptable.

  A flange 16 extends substantially in parallel with the knob portion 14 from the outer periphery of the lower end of the housing 8. Further, the housing 8 is formed with an attachment portion 24 for attaching a second plug body 10 to be described later on the outer surface on the lower end side facing the knob portion 14. Further, as shown in FIG. 3, the knob portion 14 provided on the upper end wall 12 of the housing 8 can be gripped by the operator and is formed with a width smaller than the cylindrical outer diameter of the housing 8. Has been.

  As shown in FIG. 3, the upper end wall 12 is provided with a break portion including a pair of cut grooves 15 a and 15 b. The cut grooves 15a and 15b, which are the rupture portions, are formed at an interval substantially equal to the width of the knob portion 14 and extend to the cylindrical outer side of the housing 8 facing the knob portion 14 and to the flange 16. Yes. The cut grooves 15a and 15b are formed so that the housing 8 is easily broken from the cut grooves 15a and 15b when the knob portion 14 is pulled up. As shown in FIG. 4, the attachment portion 24 is formed between the cut grooves 15 a and 15 b provided outside the housing 8.

  The shape of the fractured portion formed by the cut grooves 15a and 15b is such that the groove shape is V-shaped, U-shaped, etc., and that portion is formed thinner than the other portions, or the groove shape is provided in a broken line shape. Any shape configuration may be used as long as it is a shape that can be easily broken by the knob portion 14.

  As shown in FIGS. 1 and 2, the cut grooves 15 a and 15 b can be easily provided by a slight lifting force by providing also on the base side of the knob portion 14 or by providing an opening on the base side of the knob portion 14. It may be possible to cut it. Further, an index 17 indicating the pulling direction is provided on the upper surface of the knob portion 14.

  The first plug body 9 has a cylindrical outer shape, and a first closing film 9a formed in a substantially funnel shape is provided at the lower end of the inner periphery of the cylindrical shape. A first treatment instrument insertion hole 11 is formed at the center of the first closing film 9a. The first treatment instrument insertion hole 11 includes a small hole portion 21 and a thin portion 22. When the treatment instrument 5 is inserted into the first treatment instrument insertion hole 11, the treatment instrument 5 is inserted into the small hole portion 21 and the thin wall portion 22 by deformation and extension.

  The outside of the first plug body 9 is formed in a shape and size that is fitted and held between the holding portions 18 a and 18 b of the housing 8. That is, when the first plug body 9 is inserted from the lower end opening of the housing 8, the first plug body 9 gets over the locking portion 19 and the holding portion 18 a provided on the inner peripheral surface of the housing 8 and holds them. It is inserted until it comes into contact with the portion 18b, and is fitted between the holding portions 18a and 18b. Since the assembling operation for inserting and fitting the first plug 9 into the housing 8 is a simple pushing operation in one direction, automatic assembling by mechanization can be easily realized. Further, a first seal portion 23 is formed at the lower end of the first plug body 9 so as to be in close contact with the entire periphery of the mouth of the channel opening 6 to which the housing 9 is attached.

  In addition, as shown in FIG. 7, the 1st treatment tool penetration hole 11 provided in the 1st closure film | membrane 9a of this 1st plug body 9 communicates between the upper and lower sides of the 1st closure film | membrane 9a. A small hole 21 ′ having the same diameter or a slit 21 ″ formed so as to communicate between the upper and lower sides of the first closing film 9 a as shown in FIG. 8 may be used. The treatment instrument insertion hole 11 is formed in a shape in which the first closing film 9a is in close contact with the outer periphery of the treatment instrument when the treatment instrument is inserted.

  The second plug body 10 includes a substantially cylindrical plug body portion 27 attached to a plug body mounting portion 13 provided on the upper end wall 12 of the housing 8, and a grip extending from the upper surface side of the plug body portion 27. It consists of the holding | maintenance part 31 extended from the upper surface side of the plug part 27 which opposes the part 30 and this holding part 30, and is formed integrally.

  A hemispherical second closing film 26 is provided in the upper opening of the plug part 27 of the second plug 10. A second treatment instrument insertion hole 25 formed in a slit shape communicating between the upper and lower sides of the second closing film 26 is provided at the center of the hemispherical second closing film 26. The second treatment instrument insertion hole 25 may have a slit shape, or as shown in FIG. 9, a small hole 25 ′ having the same diameter formed so as to communicate between the upper and lower sides of the second closing film 26. good. That is, the second treatment instrument insertion hole 25 is formed in a shape in which the second closing film 26 is in close contact with the outer periphery of the treatment instrument when the treatment instrument is inserted.

  Further, the lower opening end of the plug part 27 of the second plug 10 is watertight with the periphery of the upper mold opening of the first plug 9 when inserted into the plug attachment part 13 of the housing 8. A second seal portion 28 is formed to be in close contact with.

  The grip portion 30 of the second plug body 10 is provided at a position overlapping the upper surface portion of the knob portion 14 of the housing 8 when the plug body portion 27 of the second plug body 10 is inserted into the housing 8. . The shape of the gripping portion 30 is substantially the same as that of the knob portion 14, and a convex portion 29 is formed on the surface facing the knob portion 14, and the angle α is higher than the upper surface of the knob portion 14 in the figure. It is tilted and formed. That is, the grip portion 30 is inclined at an angle α and the convex portion 29 is provided, so that the operator can easily grip the grip portion 30 and can easily lift it. The inclination angle α of the grip portion 30 is preferably about 20 °.

  The holding part 31 of the second plug 10 is formed in a band shape on the side facing the grip part 30, and at the tip of the housing 8 so as to be arranged in parallel between the cut grooves 15 a and 15 b of the housing 8. A mounting hole 33 is provided to be attached to the mounting portion 24 provided on the side surface. Further, when the second plug body 10 is removed from the housing 8, the holding section 31 in the vicinity where the mounting hole 33 is provided is suspended at a position away from the insertion periphery of the plug body mounting section 13 of the housing 8. The hinge part 34 for this is formed. Further, a flat surface portion 32 is provided on the front end surface of the holding portion 31 so as to be in contact with the flange 16 of the housing 8.

  That is, the attachment hole 33 of the holding portion 31 of the second plug 10 is attached to the attachment portion 24 of the housing 8 and attached. In the second plug body 10 having the holding portion 31 attached to the housing 8, the first plug body in which the plug body portion 27 is inserted into the plug body attaching portion 13 of the housing 8 and held on the inner periphery of the housing 8. 9 and the second seal portion 28 of the second plug 10 are in close contact with each other in a watertight manner.

  When removing the second plug body 10 from the housing 8 from this state, if the grip portion 30 is gripped and pulled up, the plug body portion 27 can be removed from the plug body mounting portion 13 of the housing 8 and removed. The second plug 10 is suspended from the hinge part 34 along the outside of the housing 8, and the holding part 31 is prevented from rotating and falling by the flat part 33 at the tip part.

The assembly of the treatment instrument plug 1 including the housing 8, the first plug body 9, and the second plug body 10 and the attachment of the treatment instrument channel 7 to the channel opening 6 will be described.
The first plug 9 is inserted into the inner periphery of the housing 8 from the lower end opening of the housing 8 (opening on the side where the flange 16 is formed). At this time, since the first plug body 9 is formed of a member that is more elastic than the housing 8, the first plug body 9 is mounted between the holding portions 18 a and 18 b provided on the inner periphery of the housing 8 after being deformed and contracted. The Alternatively, it is inserted from the plug body attaching portion 13 which is an opening at the upper end of the housing 8 from the first closing film 9a side of the first plug body 9 and is mounted between the holding portions 18a and 18b.

  Next, the attachment hole 33 of the holding part 31 of the second plug 10 is attached to the attachment part 24 of the housing 8 and fixed. Since the second plug body 10 is formed of an elastic member similar to the first plug body 9, the plug body portion 27 is connected to the plug body mounting portion 13 of the housing 8 while the holding portion 31 is curved. To insert. When the plug body portion 27 is deformed and contracted and inserted into the plug body mounting portion 13 of the housing 8, the second seal portion 28 of the plug body portion 27 is disposed on the inner periphery of the housing 8 and the housing 8. The first plug body 9 attached to the inner periphery of the first plug body 9 is watertightly attached around the upper end opening. In addition, the grip portion 30 is disposed so as to overlap the upper surface of the knob portion 14 of the housing 8. As a result, the second plug 10 is mounted between the cut grooves 15 a and 15 b provided in the housing 8.

  The attachment of the treatment instrument plug 1 thus assembled to the channel opening 6 of the treatment instrument channel 7 of the endoscope 2 will be described. The assembled treatment instrument stopper 1 is pre-sterilized. The sterilized treatment instrument stopper 1 is inserted into the channel opening 6 of the treatment instrument channel 7 from the lower end opening of the housing 8 (the opening on the side where the flange 16 is formed). The lower end opening of the housing 8 passes over the flange-shaped mouth provided in the channel opening 6 by the inclined surface 20 of the locking portion 19, and the lower end opening of the locking portion 19 and the first plug body 9. Attached to the first seal portion 23. Thereby, the 1st seal part 23 of the 1st plug 9 and the flange-like mouth of channel opening 6 are stuck watertight (state shown in Drawing 1). Further, the sealing may be performed between the channel opening 6 and the housing 8 without the first seal portion 23.

  In this way, in the state where the treatment instrument plug 1 is attached to the channel opening 6 of the treatment instrument channel 7, the distal end of the treatment instrument 5 (not shown) is closed with the second plug body 10 of the treatment instrument plug 1. Inserted from the second treatment instrument insertion hole 25 provided in the membrane 26, and through the first treatment instrument insertion hole 11 provided in the first closing film 9a of the first plug body 9, It is inserted into the treatment instrument channel 7.

  The second treatment instrument insertion hole 25 of the second plug body 10 and the first treatment instrument insertion hole 11 of the first plug body 9 are in close contact with the outer periphery of the treatment instrument 5 inserted into the treatment instrument stopper 1. Since the insertion operation is performed, the sealed state of the treatment instrument channel 7 can be secured, and even if dirt or air in the body cavity flows back through the treatment instrument channel 7, the second closure film 26 and the first closure film 9a externally Leakage can be prevented.

  In addition, when using a treatment tool 5 having an extremely thick outer diameter for the treatment tool 5, when the amount of advancing / retreating force of the insertion operation is heavy due to the close contact between the first closing film 9a and the second closing film 26, The second plug 10 is removed from the housing 8 (the state shown in FIG. 2), and the treatment tool 5 is inserted from the first treatment tool insertion hole 11 of the first plug 8 into the treatment tool channel 7. As a result, the amount of advancing / retreating force for the insertion operation of the large-diameter treatment instrument 5 is reduced, and the sealed state of the treatment instrument channel 7 can be secured.

  When removing the second plug body 10 from the housing 8, the plug body section 27 of the second plug body 10 is removed from the plug body mounting section 13 of the housing 8 by gripping and pulling up the grip section 30. When the second plug body 10 is removed, the grasping portion 30 of the second plug body 10 is inclined at an angle α with respect to the knob portion 17 of the housing 8. Can be gripped, and the user can easily lift the grip portion 30 by placing a finger on the convex portion 29 provided on the grip portion 30. Since the second plug body 10 removed from the housing 8 hangs down from the hinge portion 34 along the outside of the housing 8, the second plug body 10 has a projection range Q of the plug body mounting portion 13 of the housing 8. It is possible to hang down to a position that can be moved away from the position and does not hinder the operation of inserting the treatment instrument 5 into the plug attachment portion 13 of the housing 8 and the first treatment instrument insertion port 11 of the first plug 9. I can do it.

  Next, the operation for removing the treatment instrument plug 1 from the channel opening 6 of the treatment instrument channel 7 will be described with reference to FIG. When removing the treatment instrument plug 1 from the channel opening 6, only the knob portion 14 of the housing 8 or the knob portion 14 of the housing 8 and the holding portion 30 of the second plug body 10 are held together. The gripped knob portion 14 is pulled up in the direction of the index 17 and in the direction of the arrow in FIG. By pulling up the knob portion 14, the cut grooves 15 a and 15 b provided in the housing 8 are torn, and the housing 8 is torn from the upper surface to the side surface of the housing 8. That is, the housing 8 can be easily detached from the channel opening 6 by being torn from the cut grooves 15a and 15b. Moreover, the removed treatment instrument plug 1 cannot be reused because the housing is torn.

  As described above, when removing the treatment instrument stopper 1, the housing 8 is easily and reliably torn by the pulling operation of the knob portion 14 without being related to the mounting state of the second stopper 10 to the housing 8. It can be in a state.

  At the time of tearing and removing the housing 8, the flange portion 16 is formed on the lower end portion of the housing 8 so as to have a substantially entire circumference. Therefore, the base of the housing 8 is stable, and the base portion of the housing 8 is separated from the cut grooves 15a and 15b. The tearing operation can also be executed reliably. Further, the flange 16 can prevent the housing 8 from falling to the outside of the treatment instrument 5 when the treatment instrument 5 is inserted through the first plug body 9 and the second plug body 10. For this purpose, the first treatment instrument insertion hole 11 of the first plug body 9, the second treatment instrument insertion hole 25 of the second plug body 10, the treatment tool 5 can be kept in close contact, and The tight contact between the mouth of the channel opening 6 of the treatment instrument channel 7 and the first seal portion 23 of the first plug 9 can also be maintained. In particular, as shown in FIG. 1, the height H between the lower surface of the first treatment instrument insertion hole 11 of the first plug body 9 and the upper surface of the second treatment instrument insertion hole 25 of the second plug body 10. If the diameter is larger than the inner diameter D of the channel opening 6 (H ≧ D), the tilt angle of the treatment instrument 5 when the treatment instrument 5 is inserted can be reduced, and the treatment instrument 5 can be stably stored and held.

  Further, since the first plug body 9 and the second plug body 10 can be assembled into the housing 8 by simple pushing, automatic assembly by a machine becomes possible, and the efficiency of the assembling work is improved. And packaging after sterilization can be automated.

Next, a second embodiment of the treatment instrument plug according to the present invention will be described with reference to FIG. The same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.
In the treatment instrument plug 1a of the second embodiment, the first plug body 9 and the second plug body 10 are integrally formed. That is, instead of the holding portion 31 of the second plug body 10, a connection piece 31 a that extends from the second plug body 10 and is connected to the outer upper surface of the first plug body 9 is provided. A hinge portion 34a is provided at an intermediate portion of the connecting piece 31a for easy folding. On the other hand, a connection piece insertion groove 35 through which the connection piece 31 a for connecting the first plug body 9 and the second plug body 10 is inserted is provided on the outside of the housing 8.

  In such a configuration, the first plug body 9 is inserted from the plug mounting section 13 on the upper surface of the housing 8 and is mounted between the holding sections 18a and 18b. The connecting piece 31 a extending from the first plug body 9 is inserted into the connecting piece insertion groove 35 of the housing 8, and the plug body portion 27 of the second plug body 10 is attached to the plug body mounting portion 13 of the housing 8. To do. Attachment of the treatment instrument plug 1a to the channel opening 6 of the treatment instrument channel 7 and removal from the channel opening 6 can be performed by the same method as in the first embodiment described above.

  The treatment instrument plug 1a according to the second embodiment has the same effects as those of the first embodiment described above, and the first plug body 9 and the second plug body 10 are integrally formed, so that the component configuration Can be simplified and the cost can be reduced.

Next, a third embodiment of the treatment instrument plug according to the present invention will be described with reference to FIG. The same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.
The difference between the treatment instrument plug 1b of the third embodiment and the first embodiment described above is that the position of the attachment portion 24 to which the holding portion 31 of the second plug body 10 is attached is different. In the first embodiment described above, the mounting portion 24 is provided at a position where the holding portion 31 of the second plug 10 is attached and fixed in parallel between the cut grooves 15a and 15b provided in the housing 8. .

  On the other hand, in the third embodiment, the attachment portion 24 ′ is provided at a position where the holding portion 31 of the second plug body 10 is attached so as to be orthogonal to the cut grooves 15 a and 15 b provided in the housing 8. Provided. That is, when the second plug 10 is attached to the plug mounting portion 13 of the housing 8, the second plug 10 straddles the cut grooves 15a and 15b.

  In the state where the second plug body 10 is attached in this way, when the knob portion 14 of the housing 8 is gripped and cut from the cut grooves 15a and 15b, the knob portion 14 of the housing 8 is moved to the second plug body 10. Is cut off from the cut grooves 15a and 15b. That is, unless the second plug 10 is removed from the plug mounting portion 13 of the housing 8, the housing 8 cannot be cut from the cut grooves 15a and 15b. Thereby, the act of pulling up the knob portion 14 by mistake and tearing the housing 8 can be prevented.

  Next, 4th Embodiment of the treatment tool stopper which concerns on this invention is described using FIG. 12 and FIG. FIG. 12 is a side view showing the configuration of a treatment instrument plug for an endoscope according to the fourth embodiment of the present invention, FIG. 13 shows the fourth embodiment of the treatment instrument plug for an endoscope according to the present invention, It is sectional drawing cut | disconnected from the cutting line RR of FIG. The same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The fourth embodiment differs from the first embodiment described above in the positions of the knob portion 14 provided in the housing 8 and the cut grooves 15a and 15b. In the treatment instrument plug 1c of the fourth embodiment, a part of the flange portion 16 provided on the outer periphery on the lower end side of the housing 8 is cut out to form a knob portion 14 '. Cut grooves 15 a ′ and 15 b ′ are formed on the side surface of the housing 8 from both sides of the knob portion 14 ′. The upper ends of the cut grooves 15a 'and 15b' extend up to approximately half or more in the vertical direction of the housing 8 in the figure, and the cut grooves connecting the upper ends of the cut grooves 15a 'and 15b'. A bent portion 36 formed by the above is provided.

  That is, by pulling up the knob portion 14 ′ formed in a part of the flange portion 16, the cut grooves 15 a ′ and 15 b ′ are cut and the outside of the housing 8 is cut to the bent portion 36. It can be easily removed from the opening 6. If an index 17 indicating the pulling direction of the knob portion 14 ′ is formed between the cut grooves 15a ′ and 15b ′ provided on the side surface of the housing 8, the pulling direction of the knob portion 14 ′ can be easily recognized. .

  The treatment instrument plug 1c of the fourth embodiment is provided in the holding part 31 'of the second plug body 10 in the holding part 31' of the second plug body 10 of the treatment tool 1 of the first embodiment described above. The hinge part 34 is not provided. Instead, a bending restricting portion 37 is formed on the outside of the housing 8 to which the holding portion 31 ′ of the second plug 10 is attached. The bending restricting portion 37 is formed in a convex shape that protrudes outward in the upper position in the figure of the attachment portion 24 to which the attachment hole 33 at the tip of the holding portion 31 ′ of the second plug 10 is attached and fixed. ing. That is, the attachment hole 33 of the holding portion 31 ′ is attached and fixed to the attachment portion 24 of the housing 8 and is held between the bending restriction portion 37. As a result, when the second plug 10 is removed from the plug mounting portion 13 of the housing 8, the holding portion 31 ′ is inclined substantially obliquely with respect to the housing 8 as indicated by a two-dot chain line in the figure. Can be left unattended. As a result, the same effects as those of the first embodiment described above can be obtained, and when the second plug 10 is removed, it can be moved away from the position that hinders the insertion operation of the treatment instrument 5.

  Next, a fifth embodiment of the treatment instrument plug according to the present invention will be described with reference to FIGS. 14 to 17. FIG. 14 is a side view showing the configuration of the fifth embodiment of the treatment instrument plug for an endoscope according to the present invention, and FIG. 15 shows the configuration of the fifth embodiment of the treatment instrument plug for an endoscope according to the present invention. FIG. 16 is a cross-sectional view, FIG. 16 is a top view of the housing 8a as seen from the direction of arrow P in FIG. In 5th Embodiment of the treatment tool line for endoscopes, it is a top view which shows the structure of a 2nd plug. The same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The treatment instrument plug 1d used in the endoscope of the fifth embodiment is different in the configuration of the housing 8 and the second plug body 10 of the treatment instrument plug 1 of the first embodiment described above. As shown in FIGS. 14 and 15, the housing 8 a of the treatment instrument stopper 1 d has a knob portion 14 a extending outward from a substantially intermediate portion outside the housing 8 a. The knob portion 14a has substantially the same shape and dimension as the knob portion 14 described above, and cut grooves 15a and 15b are provided from the base portion of the knob portion 14a to the outside of the housing 8a. The cut grooves 15a and 15b are configured to cut the housing 8a when the knob portion 14a is lifted upward in the drawing. The cut grooves 15a and 15b extend from the outer side where the knob part 14a of the housing 8a is formed to the flange 16 through the upper surface and the outer side facing the knob part 14a.

  That is, when the housing 8a attached to the channel opening 6 is removed, the housing 8a can be cut from the cut grooves 15a and 15b by grasping the knob portion 14a and turning it upward in the drawing. As a result, the housing 8a can be easily removed from the channel opening 6 and cannot be reused.

  Furthermore, the outer periphery of the upper part of the housing 8a is provided with a fitting groove 9b into which a ring portion 31b of the second plug 10a described later is fitted. As shown in FIG. 17, the fitting groove 9b has a substantially rectangular ring portion 31b provided at the tip of the holding portion 31a extending from the side facing the grip portion 30 of the second plug 10a. It is designed to be fitted. For this reason, the fitting groove 9b of the housing 8a is formed in the same shape as the ring portion 31b. In addition, the shapes of the ring portion 31b and the fitting groove 9 may be, for example, an irregular shape having a parallel portion other than the substantially rectangular shape described above. This facilitates positioning when the ring portion 31b of the second plug 10a is fitted into the fitting groove 9b of the housing 8a, and the second plug 10a is inserted into the plug insertion hole 13 of the housing 8a. Easy to install and remove.

  Further, when the second plug 10a is removed from the plug mounting portion 13 of the housing 8a by the gripping operation of the gripping portion 30, the projected opening position of the plug mounting portion 13 is shown by a two-dot chain line in FIG. It can be placed at a position away from

  As a result, the same effects as those of the first embodiment described above can be obtained, and the second stopper 10a can be moved away from a position that hinders the insertion operation of the treatment instrument 5.

[Appendix]
According to the embodiment of the present invention described in detail above, the following configuration can be obtained.

(Supplementary note 1) In an endoscope treatment tool plug attached to a channel opening of a treatment tool channel of an endoscope,
A first plug body having a first treatment instrument insertion port through which the treatment instrument is inserted;
When having a plug body attaching portion, being mounted to the channel opening, and having the first treatment instrument insertion port of the first plug body facing the channel opening, and removing from the channel opening A housing provided with a breakable breakable portion;
It has a second treatment instrument insertion port through which the treatment instrument is inserted, and is detachably attached to the plug body mounting portion of the housing so that the second treatment instrument insertion port and the first plug body face each other. A second plug body,
A treatment instrument plug for an endoscope, comprising:

  (Additional remark 2) The knob part used when removing from the said channel opening is provided in the outer side of the said housing, The fracture | rupture part of the said housing is fractured | ruptured by operation of this knob part. Endoscopic treatment tool stopper.

  (Additional remark 3) When the said 2nd plug is attached to the plug mounting part of the said housing, the said 2nd plug is hold | maintained at both ends without exceeding the fracture | rupture part of the said housing The treatment instrument stopper for an endoscope according to appendix 1.

  (Additional remark 4) When the said 2nd plug body is mounted | worn with the plug body attachment part of the said housing, the said 2nd plug body is held at both ends beyond the fracture | rupture part of the said housing. The endoscope treatment tool stopper according to 1.

  (Additional remark 5) The said 2nd plug body has a holding part hold | maintained in the position avoided from the insertion range of the plug body attachment part of the said housing when it removes from the said housing. The endoscope treatment tool stopper according to any one of the above.

(Supplementary Note 6) In the forceps plug for endoscope attached to the channel opening portion of the endoscope,
A first stopper rest in which a first treatment instrument insertion passage is formed;
A housing capable of holding the first treatment instrument insertion passage of the first plug body at a position opposite to the channel opening, and being torn when being removed from the channel opening;
A second plug body in which a second treatment tool insertion path is formed and the second treatment tool insertion path is detachable at a position opposite to the first treatment tool insertion path of the first plug body;
An endoscopic forceps plug comprising:

  (Appendix 7) The first plug body and the second plug body are individually formed, and a part of the second plug body on the opposite side to the second treatment instrument insertion path is held in the housing. The forceps plug for endoscopes according to appendix 5.

  (Additional remark 8) The said housing is formed with the slit groove | channel which can be torn, and the 2nd plug rest is hold | maintained in the said housing in the state parallel to the cut groove | channel. Endoscopic forceps plug.

  (Additional remark 9) The said housing is formed with the slit groove | channel which can be torn, and the 2nd plug body is hold | maintained in the said housing in the state orthogonal to the cut groove | channel. Endoscopic forceps plug.

  (Additional remark 10) In the state which removed the said 2nd plug body from the said housing, the said 2nd plug body is not left in the projection area of the treatment tool insertion port formed in the head of the said housing, It is characterized by the above-mentioned. The forceps plug for an endoscope according to appendix 5.

Sectional drawing which shows the state which mounted | wore the channel opening of the treatment tool channel with the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. Sectional drawing which shows the state which removed the 2nd plug body of the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention from the state of FIG. The top view which looked at the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention shown in FIG. 2 from the upper side. The side view which looked at the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention shown in FIG. 1 from the arrow Y direction in the figure. The perspective view which shows the state which is operating the 2nd plug body of the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. The front view of the endoscope in which the treatment tool stopper for endoscopes according to the present invention is used. Sectional drawing which shows the 1st modification of the 1st plug body of the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. Sectional drawing which shows the 2nd modification of the 1st plug body of the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. Sectional drawing which shows the 1st modification of the 2nd plug body of the treatment tool stopper which is 1st Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. Sectional drawing which shows the structure of 2nd Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. The side view which shows the structure of 3rd Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. The side view which shows the structure of 4th Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. Sectional drawing cut | disconnected from the RR shear line | wire of FIG. 12 which shows the structure of 4th Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. The side view which shows the structure of 5th Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. Sectional drawing cut | disconnected from the SS cutting | disconnection line | wire of FIG. 14 which shows the structure of 5th Embodiment of the treatment tool stopper for endoscopes which concerns on this invention. The top view of the housing seen from the arrow P direction of FIG. 14 in 5th Embodiment of the treatment tool line for endoscopes which concerns on this invention. The top view which shows the structure of a 2nd plug body in 5th Embodiment of the treatment tool line for endoscopes which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Treatment tool plug 5 Treatment tool 6 Channel opening 7 Treatment tool channel 8 Housing 9 1st plug body 10 2nd plug body 11 1st treatment tool insertion hole 13 Plug body mounting part 14 Knob part 15 Cut groove 16 Flange 17 Index 18 Holding part 19 Locking part 24 Mounting part 25 Second treatment instrument insertion hole 30 Gripping part 31 Holding part 33 Mounting hole Agent Patent attorney Susumu Ito

Claims (5)

In the endoscope treatment instrument plug attached to the channel opening of the treatment instrument channel of the endoscope,
A first plug body having a first treatment instrument insertion port through which the treatment instrument is inserted;
When having a plug body attaching portion, being mounted in the channel opening, and having the first treatment instrument insertion port of the first plug body facing the channel opening, and removing from the channel opening A housing provided with a breakable breakable portion;
It has a second treatment instrument insertion port through which the treatment instrument is inserted, and is detachably attached to the plug body mounting portion of the housing so that the second treatment instrument insertion port and the first plug body face each other. A second plug body,
A treatment instrument plug for an endoscope, comprising:   2. The endoscope for an endoscope according to claim 1, wherein a knob portion used when removing from the channel opening is provided outside the housing, and the fracture portion of the housing is broken by operation of the knob portion. Treatment tool stopper.   The said 2nd plug body is hold | maintained at both ends without exceeding the fracture | rupture part of the said housing in the state with which the said 2nd plug body was mounted | worn with the plug body attachment part of the said housing. The endoscope treatment tool stopper as described.   The said 2nd plug body is the both ends hold | maintained exceeding the fracture | rupture part of the said housing in the state with which the said 2nd plug body was mounted | worn with the plug body attachment part of the said housing. Endoscopic treatment tool stopper.   The said 2nd plug body has a holding part hold | maintained in the position avoided from the insertion range of the plug body mounting part of the said housing, when it removes from the said housing. A treatment instrument stopper for an endoscope according to 1.

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