JP4307957B2 - Ultrasound endoscope device - Google Patents

Description

The present invention provides an endoscopic forceps plug that is disposed in a treatment instrument insertion port provided in an ultrasonic endoscope and closes the treatment instrument insertion port in a substantially airtight manner, and the endoscopic forceps plug. The present invention relates to an ultrasonic endoscope apparatus including a puncture needle that is inserted through a treatment instrument insertion port .

  In general, an endoscope used for medical purposes mainly includes an insertion portion that is inserted into a living body and an operation portion that is provided at a proximal end portion of the insertion portion. In an endoscope in which a treatment instrument insertion channel is provided inside the insertion portion, diagnosis and treatment can be performed by introducing a treatment instrument such as a biopsy forceps into the body cavity via the treatment instrument insertion channel. .

  The distal end side of the treatment instrument insertion channel disposed in the insertion portion communicates with a channel opening formed at the distal end portion of the insertion portion, and the proximal end side passes through the channel branching portion, and one of the endoscope operation portions. It communicates with the treatment instrument insertion port, and the other communicates with the suction conduit. The suction line is connected to a suction machine through a base, a tube, or the like.

  In general, in endoscopy, it is necessary to apply suction to remove liquid substances such as mucus in the body cavity that interfere with the inspection, but if air is sucked from the treatment instrument insertion opening, It becomes impossible to suck mucus. For this reason, a mouthpiece is provided at the treatment instrument insertion port, and an airtight valve is attached to the mouthpiece to prevent air leakage from the treatment instrument insertion opening and suck the target mucus.

  As the airtight valve, for example, Japanese Patent Application Laid-Open No. 62-275447 has an occlusion membrane that hermetically occludes a treatment instrument insertion port of an endoscope, and an endoscope for which a slit is formed in the occlusion membrane. A forceps plug is shown. In this endoscopic forceps plug, it is possible to introduce a treatment tool such as a forceps into the treatment tool insertion port of the endoscope in an airtight manner through the slit.

  However, depending on the type of the treatment tool, there is a type in which an operation part provided at the base end part of the treatment tool is attached to the base part and used. When mounting such a treatment tool on the base part, the endoscopic forceps plug is once removed from the base part, and then a treatment is performed by attaching the operation part of the treatment tool to the base part. There must be. Therefore, in the procedure using the treatment tool repeatedly, it is necessary to alternately attach the forceps plug for endoscope and the treatment tool to the base part, which is a complicated work for the operator.

For example, Japanese Patent Application Laid-Open No. 2002-017665 discloses an endoscope instrument that is simple and reliable to be attached to the base. By using this endoscopic instrument, it is possible to quickly attach and detach the operation part of the treatment tool with respect to the base part.
JP-A-62-275447 JP 2002-017665 A

  However, when the endoscopic instrument disclosed in Japanese Patent Application Laid-Open No. 2002-017665 is adopted as an ultrasonic puncture needle, the improvement of the operation of attaching / detaching the operation portion of the ultrasonic puncture needle to the base portion However, the problem relating to the complexity of attaching and detaching the endoscope forceps plug to and from the base has not been solved, and improvement is also desired to shorten the examination time.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an ultrasonic endoscope apparatus that eliminates the need for detachment work from the treatment instrument insertion port each time puncture is performed with a puncture needle. Yes.

The ultrasonic endoscope apparatus of the present invention is a sheath that is inserted from a base part provided in a treatment instrument insertion port of an ultrasonic endoscope operation part of a treatment instrument insertion channel provided in the ultrasonic endoscope. A treatment instrument insertion portion in which a needle tube for collecting a diseased tissue or the like is slidably inserted, and a puncture needle operation portion that is disposed at a proximal end portion of the treatment instrument insertion portion and punctures the biological tissue. A puncture needle comprising a puncture needle, a tube, a base mounting portion provided on the opening side of the internal space and disposed in the base portion, and a treatment in which the treatment instrument insertion portion is inserted through the internal space and the outside A forceps plug exterior member having a tool insertion through-hole, and a communication member formed in the internal space, formed of an elastic member, closes the treatment instrument insertion port substantially airtightly, and allows the treatment instrument insertion portion to be inserted. a plurality of valve members having a section, ultrasonic endoscope comprising a The ultrasonic endoscope device comprising the slave plug and,
The ultrasonic endoscope forceps plug is in the forceps plug exterior member, the operating portion of the puncture needle is provided with an operation portion mounting section is removably placed against the puncture needle, the puncture needle On the sheath side of the operation unit, it is possible to integrally fix the operation unit of the puncture needle to the operation unit attachment unit and to remove the operation unit of the puncture needle integrally fixed to the operation unit attachment unit A connecting member is provided .

According to this configuration, by attaching the forceps plug for ultrasonic endoscope to the treatment instrument insertion opening, the treatment instrument insertion opening is closed in a substantially airtight manner. And this in the state of attaching the ultrasonic endoscope forceps plug, insert the puncture needle, it is possible to attach and detach the operation unit of the puncture needle operation unit mounting portion provided on the forceps plug outer member . At this time, the substantially airtight state is maintained.

  According to the present invention, since it is not necessary to attach / detach the forceps plug from the treatment instrument insertion opening each time the treatment instrument is used, the burden on the operator can be reduced and the inspection time can be shortened. A forceps plug can be provided.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 5 relate to an embodiment of the present invention, FIG. 1 is a diagram illustrating a configuration example of an endoscope apparatus, FIG. 2 is a diagram illustrating a configuration of a forceps plug, and FIG. 3 is a forceps plug and a base portion. FIG. 4 is a diagram illustrating a state in which the treatment tool is inserted into the forceps plug press-fitted and arranged in the mouthpiece, and FIG. 5 is a diagram illustrating the treatment tool inserted into the forceps plug that is press-fitted and arranged in the mouthpiece. It is a figure explaining the state which fixed the operation part.

  3A is a diagram showing a state in which a forceps plug is press-fitted and arranged in the base portion, FIG. 3B is a diagram illustrating a knob portion and a cut groove provided in the forceps plug, and FIG. It is a figure explaining the state which fractured | ruptured the cap attachment part of the forceps stopper.

  As shown in FIG. 1, an endoscope apparatus 1 according to this embodiment includes, for example, an ultrasonic endoscope 2, an endoscopic forceps plug (hereinafter abbreviated as a forceps plug) 3, and an ultrasonic puncture needle, for example. (Hereinafter abbreviated as “puncture needle”) 4.

  The ultrasonic endoscope 2 includes an elongated insertion portion 2a to be inserted into a body cavity, an operation portion 2b located at the proximal end of the insertion portion 2a, and a universal cord extending from a side portion of the operation portion 2b. And 2c. An endoscope connector connected to a light source device (not shown) is provided at the base end portion of the universal cord 2c. From the endoscope connector, an ultrasonic cable connected to an ultrasonic observation apparatus (not shown) extends.

  The insertion portion 2a is configured by connecting a hard distal end portion 21, a bending portion 22, and a flexible tube portion 23 in order from the distal end side. For example, an ultrasonic transducer unit 24 including a convex type ultrasonic transducer configured by arranging a plurality of piezoelectric elements that transmit and receive ultrasonic waves is disposed at the distal end of the distal end hard portion 21.

  The operation portion 2b includes an angle knob 25 for bending the bending portion 22 in a desired direction, an air / water supply button 26a for performing air supply and water supply operations, and a suction button 26b for performing a suction operation. A treatment instrument insertion port 27 for introducing a treatment instrument such as the ultrasonic puncture needle 4 into the body cavity is provided. Reference numeral 28 denotes a cap portion, and the forceps plug 3 is attached to the cap portion 28.

  The treatment instrument insertion port 27 is an opening communicating with a treatment instrument insertion channel (not shown) provided in the insertion portion 2a. The treatment instrument inserted through the treatment instrument insertion port 27 and the treatment instrument insertion channel protrudes from a forceps outlet (not shown) formed in the distal end hard portion 21.

  Further, a branch portion (not shown) is provided on the proximal end side of the treatment instrument insertion channel, one of which communicates with the treatment instrument insertion port 27 and the other communicates with a suction conduit (not shown).

  As shown in FIG. 2, the forceps plug 3 includes a substantially cylindrical forceps plug exterior member (hereinafter abbreviated as an exterior member) 3a formed of a resin member having elasticity, a synthetic rubber, a resin member having elasticity, and the like. An airtight closing member 3b, which is a substantially tubular first valve member formed of an elastic member, and a treatment instrument contact member 3c, which is a substantially tubular second valve member, formed of an elastic member such as a synthetic rubber or an elastic resin member; It consists of

  The exterior member 3 a includes a base attachment part 31 disposed in a base part 28 provided in the treatment instrument insertion port 27 of the ultrasonic endoscope 2 and the puncture needle 4 constituting the operation part attachment part 30. A treatment tool operation part locking part (hereinafter abbreviated as a treatment tool locking part) composed of a flange part protruding from the outer peripheral side of the upper side of the forceps plug exterior member 3a to which an operation part to be described later can be detachably attached. 32) and a flange 33 on which the distal end surface of the operation portion attached to the treatment instrument locking portion 32 is abutted and arranged.

  In addition, a treatment instrument insertion through hole (hereinafter abbreviated as a through hole) 35 communicating with the internal space 34 is formed at a substantially central portion of the upper surface portion of the exterior member 3a having the treatment instrument locking portion 32. Yes.

  The internal space portion 34 is composed of a valve member disposition space 34a and a base disposition space 34b, and a first convex portion 36a and a second convex portion 36b are formed at predetermined positions on the inner peripheral surface of the internal space portion 34. Yes. The first convex portion 36a is a convex portion for arranging and holding the airtight blocking member 3b and the treatment instrument contact member 3c in the valve member arrangement space 34a, and is formed in a spherical shape, for example. On the other hand, the second convex portion 36b is a convex portion for preventing the forceps plug 3 from dropping off from the base portion 28, and is closely fixed to the step portion 28a of the base portion 28 by a predetermined elastic force. It is configured to do.

  The hermetic closing member 3b is provided with an O-ring portion 37a and a closing portion 37c having a slit 37b as a communicating portion. The inner diameter dimension of the O-ring-shaped portion 37a is smaller than the outer diameter dimension of the operation section supporting pipe member described later. The slit 37b is formed so that, for example, the operation portion supporting pipe member is inserted through a substantially central portion of the closing portion 37c.

  The treatment instrument contact member 3c is provided with a partition portion 38 having a small hole 38a through which the operation portion support pipe member is inserted, for example. The inner diameter of the small hole 38a is smaller than the outer diameter of the insertion portion of the treatment instrument.

  When the airtight closing member 3b and the treatment instrument contact member 3c are disposed in the valve member disposition space 34a, the slit 37b is brought into a close contact state by the elastic force of the airtight closing member 3b, and is closed. The state is retained.

  The forceps plug 3 is integrally fixed to the base part 28 as shown in FIG. 3A by being press-fitted into the base part 28 as shown by an arrow. In this fixed state, the forceps plug 3 is securely fixed to the base portion 28 without falling off by the elastic force of the second convex portion 36b formed in the base arrangement space 34b of the forceps plug 3. The As a result, the treatment tool can be freely inserted and removed through the forceps plug 3 as will be described later.

  As shown in FIG. 3B, a knob portion 39 protruding from this side portion is provided, for example, on the lower outer peripheral side portion of the base attaching portion 31 constituting the forceps plug 3. On both sides of the knob portion 39, cut grooves 31a reaching the flange portion 33 are formed.

  As shown in FIG. 3 (c), when removing the forceps plug 3 press-fitted into the base portion 28, the knob portion 39 is gripped and the knob portion 39 is pulled up toward the collar portion 33. As a result, a part of the base attaching portion 31 constituting the forceps plug 3 is broken along the cut groove 31a. Then, the state in which the forceps plug 3 is fixed to the base portion 28 by the elastic force of the second convex portion 36b is released, and the forceps plug 3 can be easily removed from the base portion 28. And in the forceps stopper 3 removed from the said base part 28, when a part of the base attachment part 31 is fractured | ruptured, it will be in a non-reusable state.

  As shown in FIG. 1, the puncture needle 4 has a treatment instrument insertion portion 41 inserted into a treatment instrument insertion channel (not shown) of the ultrasonic endoscope 2 and a proximal end portion of the treatment instrument insertion portion 41. It is mainly comprised by the operation part 42 which doubles as the arrange | positioned holding part.

The treatment instrument insertion portion 41 includes a sheath 43 that constitutes an exterior, and a needle tube and a stylet (not shown) that are slidably disposed within the sheath 43.
The needle tube is punctured into a living tissue and collects a diseased tissue or the like, and is inserted into the sheath 43 so as to freely advance and retract. This needle tube is formed of a thin and thin stainless steel pipe, for example. The stylet is used when pushing out a diseased tissue or the like collected in the distal end portion of the needle tube, and is inserted and disposed in the needle tube so as to freely advance and retract. The stylet is formed of an elongated stainless rod member, for example.

On the other hand, the operation unit 42 mainly includes an operation unit main body 44, a slider 45, and a stylet operation unit 46.
An attachment member that is a connecting member that enables quick and integral fixation to the base portion 28 provided in the operation portion 2b of the ultrasonic endoscope 2 at the distal end portion of the operation portion main body 44. 47 is provided. The mounting member 47 is provided with a slide member 47a having a movable structure having an engagement hole 47b and an engagement release hole 47c. In addition, an operation unit support pipe member made of, for example, a stainless steel pipe is inserted from the distal end of the operation unit main body 44 into the channel hole (reference numeral 27a in FIG. 2) of the operation unit 2b through the treatment instrument insertion port 27. 48 protrudes.

  The operation unit support pipe member 48 is provided only in a configuration in which the operation unit of the treatment tool needs to be stably fixed to the operation unit 2b via the forceps plug 3. Reference numeral 49 denotes a stopper portion. The stopper portion 49 is slidably disposed with respect to the operation portion main body 44. Specifically, the stopper 49 is fixed at a desired position by setting the fixing screw 49b in a state where the stopper body 49a constituting the stopper 49 is arranged at a desired position. A protruding distance of the slider 45, for example, L is set.

The operation of the endoscope apparatus 1 configured as described above will be described.
First, as shown in FIG. 3A, the forceps plug 3 is press-fitted and arranged in the base portion 28. At this time, since the slit 37b of the hermetic closing member 3b is in close contact with the elastic force, the inside of the treatment instrument insertion channel of the ultrasonic endoscope 2 is closed with respect to the outside.

  Next, as shown in FIG. 4, the sheath 43 constituting the insertion portion 41 of the puncture needle 4 is inserted into the treatment instrument insertion channel through the through hole 35 and the channel hole 27a. At this time, the sheath 43 passes through the slit 37b and the small hole 38a against the elastic force of the slit 37b and the small hole 38a, and is guided into the channel hole 27a. In this inserted state, the inner peripheral surface of the slit 37b and the small hole 38a are in close contact with the outer peripheral surface of the sheath 43.

  Next, the sheath 43 is further inserted. As a result, the operation portion support pipe member 48 is disposed in the channel hole 27a against the urging force of the O-ring portion 37a, the urging force of the slit 37b, and the urging force of the small hole 38a. Thereafter, the disengagement hole 47c of the slide member 47a passes through the treatment instrument locking part 32, and the distal end surface of the operation part 42 of the puncture needle 4 comes into contact with the collar part 33.

  Here, the slide member 47a is moved so that the engagement hole 47b is disposed between the treatment instrument locking portion 32 and the heel portion 33 instead of the engagement release hole 47c. As a result, the operation portion 42 of the puncture needle 4 is integrally fixed to the forceps plug 3 as shown in FIG. In this fixed state, stable puncture can be performed.

  When the puncture with the puncture needle 4 is completed, the slide member 47a is moved so that the disengagement hole 47c is disposed again between the treatment instrument locking portion 32 and the heel portion 33, and the puncture needle 4 is operated. The portion 42 is removed from the forceps plug 3 and the insertion portion 41 is removed from the treatment instrument insertion channel to collect a sample. At this time, the forceps plug 3 is kept pressed into the base portion 28.

  Then, in a state where the forceps plug 3 is press-fitted and arranged in the base portion 28 of the operation portion 2b, the puncture needle 4 is repeatedly inserted into and removed from the treatment instrument insertion channel, and a plurality of specimens are collected. Yes.

  As described above, the forceps plug is constituted by the cylindrical exterior member, and the airtight closing member and the treatment instrument contact member disposed in the internal space portion of the exterior member, and the base attachment for attaching the base portion to the exterior member By attaching the treatment instrument locking part and the heel part for attaching the operation part and the operation part of the treatment instrument, the base attachment part of the forceps plug is press-fitted into the base part provided in the treatment instrument insertion port of the operation part By doing so, the forceps plug can be securely press-fitted and arranged in the base part, and the operation part provided in the treatment instrument can be attached and detached while the forceps plug is press-fitted and arranged in the base part. Can do.

  Thus, the insertion of the treatment tool into the treatment instrument insertion channel can be easily repeated through the forceps plug without performing the operation of detaching the forceps plug from the operation portion.

  Also, by providing a knob part and a notch groove in the forceps plug, pulling up the knob part and breaking the base attachment part, the forceps plug press-fitted and arranged in the base part can be easily removed from the base part. In addition, it is possible to reliably prevent reuse of the forceps plug that has been detached from the base part by breaking the base attachment part.

  Furthermore, by providing the operation portion support pipe member, which is disposed in the channel hole of the operation portion, in the operation portion of the treatment instrument, the forceps plug is formed of an elastic member. The operation part of the disposed treatment tool can be fixed to the operation part in a stable state.

Note that the configurations of the forceps plug and the connecting member are not limited to the above-described embodiments, and the same operations and effects as described above can be obtained even with the configurations shown in FIGS. 6 to 10.
Here, FIG. 6 is a diagram illustrating another configuration of the forceps plug and the connecting member, FIG. 7 is a diagram illustrating a connection and fixing state of the forceps plug and the connecting member, and FIG. 8 is another configuration of the forceps plug and the connecting member. FIG. 9 is a diagram for explaining another configuration of the forceps plug and the connecting member, and FIG. 10 is a diagram for explaining the relationship between the forceps stopper and the connecting member arranged in the base part. (A) is a cross-sectional view illustrating a forceps plug, FIG. 8 (b) is a diagram illustrating a connection and fixing state of the forceps plug and the connection member, and FIG. 10 (a) is a state in which the forceps plug is disposed in the base part. FIG. 10B is a view for explaining a connection and fixing state between the forceps plug and the connection member transferred to the base part.

First, another configuration of the forceps plug and the connecting member will be described with reference to FIGS.
As shown in FIG. 6, in the present embodiment, there are a plurality of holes, a plurality of through holes, a circumferential recess, and the like that serve as a treatment instrument mounting portion on the upper outer peripheral surface of the exterior member 3d constituting the forceps plug 3A. While the insertion portion 51 is provided, an elastic connection portion 52 having a claw portion 52a as a connection member provided in the operation portion 42 of the puncture needle 4 and an opening / closing operation member 53 that opens and closes the claw portion 52a in an open state or a closed state. It is composed. Other configurations are the same as those of the above-described embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 7, a claw portion 52a of an elastic connecting portion 52 provided in the operation portion 42 of the puncture needle 4 is arranged in the engaging portion 51 of the forceps plug 3A press-fitted and arranged in the base portion 28, The opening / closing member 53 is moved from the position indicated by the broken line to the position indicated by the solid line. As a result, the claw portion 52a of the elastic connecting portion 52 is disposed in the engaging portion 51, and the operation portion 42 of the puncture needle 4 is integrally fixed to the operation portion 2b via the forceps plug 3A. .

  In addition, by providing at least three engaging portions 51 at equal intervals, the operation portion 42 can be stably fixed to the operation portion 2b via the forceps plug 3A.

Next, another configuration of the forceps stopper and the connecting member will be described with reference to FIGS. 8 (a) and 8 (b).
As shown in FIG. 8 (a), in the present embodiment, a luer base 54 is provided as a treatment instrument mounting portion in the upper part of the exterior member 3e constituting the forceps plug 3B in the figure, while the operation portion 42 of the puncture needle 4 is provided. The connecting member provided in the case is a luer base 55. Other configurations are the same as those of the above-described embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 8B, the luer base 55 provided in the operation part 42 of the puncture needle 4 is disposed with respect to the luer base part 54 of the forceps plug 3B press-fitted and disposed in the base part 28. As a result, the luer base 55 is integrated with the luer base 54, and the operation part 42 of the puncture needle 4 is integrally fixed to the operation part 2b via the forceps plug 3B.

Next, another configuration of the forceps plug and the connecting member will be described with reference to FIGS. 9 to 10B.
As shown in FIG. 9, in the present embodiment, the shape of the treatment instrument locking portion 32 formed on the exterior member 3f constituting the forceps plug 3C is formed in the same shape as the base portion 28, and the exterior member 3f The positional relationship between the treatment instrument locking portion 32 and the heel portion 33 to be formed is set similarly to the positional relationship between the base portion 28 and the operation portion 2b. Other configurations are the same as those of the above-described embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 10 (a), the forceps plug 3C is press-fitted and arranged in the base part 28, whereby a treatment instrument locking part 32 similar to the base part 28 is provided in the operation part 2b instead of the base part 28. The provided forceps plug 3C is arranged.

  Accordingly, as shown in FIG. 10 (b), for example, the operation portion 42 including the attachment member 47 originally configured to be directly attached to the mouthpiece portion 28 of the endoscope is connected to the mouthpiece portion via the forceps plug 3C. 28 can be attached. Thereby, the operation part 42 of the puncture needle 4 is integrally fixed to the operation part 2b without removing the forceps plug 3C.

  It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

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

(1) A forceps plug for an endoscope that is disposed at a treatment instrument insertion port provided in an endoscope and closes the treatment instrument insertion port substantially airtightly,
A forceps plug for an endoscope in which a forceps plug exterior member having an attachment portion disposed at the treatment tool insertion port is provided with a treatment tool operation portion locking portion that allows the operation portion of the treatment tool to be detachable.

(2) A treatment instrument operating section that is detachable from an attachment section disposed at a treatment instrument insertion port of an endoscope and an operation section provided at a proximal end portion of a treatment instrument introduced through the treatment instrument insertion port A cylindrical forceps plug exterior member with a stop;
A valve member that is formed of an elastic member disposed in the internal space of the forceps plug exterior member, closes the treatment instrument insertion port substantially in an airtight manner, and has a communication portion through which the treatment instrument can be inserted;
An endoscopic forceps plug comprising:

(3) The forceps plug for endoscope according to appendix 2, wherein the forceps plug exterior member is formed of a resin member having a predetermined elasticity.

(4) The forceps plug for an endoscope according to appendix 2, wherein the valve member is formed of a rubber member.

(5) The treatment instrument operation portion locking portion is for an endoscope according to any one of supplementary notes 1 to 3, which is at least one flange portion provided on an outer peripheral portion of the forceps plug exterior member. Forceps plug.

(6) The forceps plug for an endoscope according to any one of appendix 1 to appendix 3, wherein the treatment instrument operation portion locking portion is a recess or a hole.

(7) The endoscopic forceps plug according to any one of appendix 1 to appendix 3, wherein the treatment instrument operation portion locking portion has a luer base shape.

(8) The endoscope for an endoscope according to any one of appendix 1 to appendix 3, wherein the treatment instrument operation part locking part is configured in substantially the same shape as a base part constituting a treatment instrument insertion port of an endoscope. Forceps plug.

(9) An endoscope having a treatment instrument insertion opening, a treatment instrument having an operation unit that is detachably disposed in the treatment instrument insertion opening, and the treatment instrument insertion opening that is disposed in the treatment instrument insertion opening. In an endoscope apparatus comprising an endoscopic forceps plug that is airtightly closed,
An endoscope apparatus comprising a treatment instrument operation portion locking portion that allows the operation portion of the treatment instrument to be detachably attached to the endoscope forceps plug.

1 to 5 relate to an embodiment of the present invention, and FIG. 1 is a diagram illustrating an example of the configuration of an endoscope apparatus. The figure explaining the structure of a forceps stopper The figure explaining the relationship between a forceps stopper and a cap part The figure explaining the state which inserts a treatment tool in the forceps stopper press-fitted and arrange | positioned at a nozzle | cap | die part The figure explaining the state which fixed the operation part of the treatment tool to the forceps stopper press-fitted and arranged in the base part The figure explaining other structures of a forceps stopper and a connection member The figure explaining the connection fixation state of a forceps stopper and a connection member The figure explaining another structure of a forceps stopper and a connection member The figure explaining other structure of a forceps stopper and a connection member The figure explaining the relationship between the forceps stopper arrange | positioned at a nozzle | cap | die part and a connection member

Explanation of symbols

3 ... Forceps stopper
3a ... exterior member
3b ... Airtight occlusion member
3c ... treatment tool adhesion member
30 ... Operation part attachment part 31 ... Base attachment part
32 ... Treatment instrument locking part 33 ... Buttocks 36a ... First convex part 36b ... Second convex part 37b ... Slit 38a ... Small hole Agent Patent attorney Susumu Ito

Claims (6)

A needle tube that collects a diseased tissue or the like in a sheath inserted from a base provided in a treatment instrument insertion port of an ultrasonic endoscope operation unit of a treatment instrument insertion channel provided in the ultrasonic endoscope. A puncture needle comprising a treatment instrument insertion section slidably inserted and a puncture needle operation section disposed at a proximal end portion of the treatment instrument insertion section and puncturing the needle tube into a living tissue;
A tube mounting portion provided on the opening side of the internal space and disposed in the base portion, and a treatment instrument insertion through hole through which the internal space communicates with the outside and the treatment instrument insertion portion is inserted. A forceps plug exterior member having a plurality of valves formed in the internal space and formed of an elastic member that substantially airtightly closes the treatment instrument insertion port and has a communication part through which the treatment instrument insertion part can be inserted. An ultrasonic endoscopic device comprising a member, and a forceps plug for an ultrasonic endoscope comprising:
The ultrasonic endoscope forceps plug is in the forceps plug outer member, an operation unit mounting portion operation section of the puncture needle is detachably placed against,
The puncture needle is integrally fixed to the operation portion attachment portion of the operation portion of the puncture needle on the sheath side of the operation portion of the puncture needle, and the puncture is integrally fixed to the operation portion attachment portion. An ultrasonic endoscope apparatus comprising a connecting member that enables removal of a needle operation unit.   The operation portion attaching portion includes a treatment tool operation portion locking portion configured by a flange provided on the treatment tool insertion through hole side of the forceps plug exterior member, and a scissors facing the treatment tool operation portion locking portion. And
  The connecting member is provided with a slide member, an engagement hole provided on the slide member, and switched between the treatment instrument operation portion locking portion and the heel portion by the movement of the slide member, and an engagement A release hole,
  The operation portion of the puncture needle is arranged such that the distal end surface of the operation portion comes into contact with the heel portion by arranging the engagement hole between the treatment instrument operation portion locking portion and the heel portion. The ultrasonic endoscope apparatus according to claim 1, wherein the ultrasonic endoscope apparatus is integrally fixed to a forceps plug for a sonic endoscope.   The operation portion mounting portion is configured by a plurality of holes provided on the side surface of the forceps plug exterior member on the treatment instrument insertion through-hole side, or a plurality of circumferential recesses communicating the internal space with the outside. Has a clerk,
  The connecting member has an elastic connecting portion having a claw portion disposed in the engaging portion, and an opening / closing operation member for opening and closing the claw portion,
  The operation portion of the puncture needle closes the opening / closing operation member so that the claw portion is disposed in the engagement portion and is integrally fixed to the forceps plug for an ultrasonic endoscope. The ultrasonic endoscope apparatus according to claim 1.   The operation part attaching part is a luer base part, and the connecting member is a luer base disposed in the luer base part,
  The operation part of the puncture needle is arranged so that the luer base and the luer base part are engaged with each other by arranging the luer base in the luer base part and fixed to the forceps plug for ultrasonic endoscope. The ultrasonic endoscope apparatus according to claim 1, wherein:   The distal end of the puncture needle is disposed in the channel when the operation portion of the puncture needle is integrally fixed to the forceps plug for an ultrasonic endoscope on the sheath on the operation portion side of the sheath. The ultrasonic endoscope apparatus according to any one of claims 1 to 4, further comprising an operation unit support pipe member.   The forceps plug exterior member having the treatment instrument operation portion locking portion and the buttocks portion,
  The shape of the treatment instrument locking part is the same shape as the base part, and the positional relationship between the treatment tool operation part locking part and the heel part is the position of the base part and the operation part of the ultrasonic endoscope. The ultrasonic endoscope apparatus according to claim 2, wherein the ultrasonic endoscope apparatus matches the relationship.

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