JP2005328881A - Treatment instrument for endoscope, endoscope and housing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable the distal end treatment section of the treatment instrument of an endoscope to be easily attached to/detached from an insertion section. <P>SOLUTION: This endoscope has a housing device 70 which is fitted on the endoscope 43, and for the housing device 70, an attaching/detaching mechanism section 73 is provided on a base section 72. The attaching/detaching mechanism section 73 has a housing groove, and when treatment section units 80, 91, 95, 100 and 105 are housed in the housing groove, a groove member and a hook member which can be engaged with an insertion section unit are exposed at the proximal end sections of respective treatment section units 80, 91, 95, 100 and 105. The attaching/detaching mechanism section 73 can be used not only when the treatment section units 80, 91, 95, 100 and 105 are connected with the insertion section unit but also when the treatment section units 80, 91, 95, 100 and 105 after use are detached from the insertion section unit as well. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an endoscope treatment tool, an endoscope, and a storage device that are inserted into a forceps channel of an endoscope and collect a tissue specimen and cells from the body.

The endoscope treatment tool has a flexible insertion portion that is inserted through the forceps channel of the endoscope, and a distal treatment portion is provided at the distal end of the insertion portion. The distal treatment section is operated by the advancement and retraction of the operation wire. The operation wire is inserted through the insertion section and connected to an operation section provided at the proximal end of the insertion section.
For example, biopsy forceps and the like are known as an endoscopic treatment tool used for collecting tissue specimens and cells from the body. The biopsy forceps has a pair of forceps cups that are opened and closed by a link mechanism that is operated by remote operation from the hand (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3). Here, in the endoscopic treatment tools disclosed in these patent documents, the distal treatment section is detachable from the insertion section, and the distal treatment section can be exchanged.
Japanese Patent Laid-Open No. 10-309284 West German utility model No. 8905099 US Pat. No. 5,782,748

However, in this type of endoscopic treatment tool, when the distal treatment section is mounted, the operation wire and the operation section must be connected first, and then the distal treatment section must be fixed to the insertion section. When removing the treatment section, it was necessary to remove the operation wire after releasing the fixation of the distal treatment section, and the attaching / detaching work was troublesome. Furthermore, since the attaching / detaching work is troublesome, there has been a problem that the tip treatment instrument cannot be quickly replaced.
The present invention has been made paying attention to such a problem, and an object of the present invention is to make it possible to easily attach and detach the distal treatment section of the endoscope treatment tool to the insertion section. It is.

The invention according to claim 1 of the present invention that solves the above-described problems includes a distal treatment section that is inserted into the body and performs treatment on the living body, an operation section that causes the distal treatment section to act, and the operation section as a base end. A treatment instrument insertion section having a distal end treatment section that is detachably attached to the distal end; an attachment mechanism that can be equipped with the distal treatment section, and that attaches the distal treatment section to the treatment instrument insertion section; and the treatment instrument insertion section. An endoscopic treatment tool comprising: a storage device including a removal mechanism for removing the attached distal treatment section.
This endoscope treatment tool is configured such that a distal treatment section is detachable, and the distal treatment section is accommodated in an accommodation device. The accommodation device includes an attachment mechanism and a removal mechanism, and can be connected to or removed from the treatment portion insertion portion in a state where the distal treatment portion is accommodated in the accommodation device.

The invention according to claim 2 includes a distal treatment section that is inserted into the body and collects a specimen from the body, an operation section that causes the distal treatment section to act, and an operation section at a proximal end, and the distal treatment at the distal end. An internal view comprising: a treatment instrument insertion portion having a detachable portion; and a storage device having an attachment mechanism capable of installing the distal treatment portion and attaching the distal treatment portion to the treatment instrument insertion portion. A mirror treatment tool was obtained.
This endoscope treatment tool collects a specimen, and the distal treatment section is configured to be detachable from the treatment section insertion section. The accommodation device that accommodates the distal treatment section is provided with an attachment mechanism, and can be connected to the treatment section insertion section in a state in which the distal treatment section is accommodated.

According to a third aspect of the present invention, in the endoscope treatment tool according to the second aspect, the storage device includes a removal mechanism for removing the distal treatment section attached to the treatment instrument insertion section. It is characterized by.
Since this endoscope treatment tool includes a removal mechanism in the accommodation device, it can be removed from the treatment portion insertion portion while the distal treatment portion is accommodated in the accommodation device.

The invention according to claim 4 is the endoscope treatment tool according to any one of claims 1 to 3, wherein the attachment mechanism of the endoscope treatment portion is a proximal end of the distal treatment portion. An attachment portion to the treatment instrument insertion portion provided on the fitting device, a fitted portion urged by a first elastic member so as to cover the attachment portion, and a length of the distal treatment portion provided in the storage device. A slit that opens in a direction substantially perpendicular to the direction axis so as to pass through the distal treatment section, and an axis that urges the distal treatment section in the axial direction from the distal side so that the distal treatment section cannot pass through the slit. And a second elastic member that moves the fitting portion relative to the attachment portion against the first elastic member to expose the attachment portion. And
In this endoscopic treatment instrument, when the distal treatment section is inserted into the attachment mechanism, the distal treatment section is biased by the second elastic member, and the position of the slit of the attachment mechanism and the distal treatment section are shifted, leading to the distal treatment section. Can not escape. At this time, due to the action of the first elastic member and the second elastic member, the attachment portion is exposed on the proximal end side of the distal treatment portion. Since the attachment portion is configured to be attached to the treatment instrument insertion portion when exposed, the attachment portion can be attached to the treatment instrument insertion portion in a state where the distal treatment portion is accommodated in the attachment mechanism.

The invention according to claim 5 is characterized in that, in the endoscope treatment tool according to claim 4, the second elastic member is rotatably supported with respect to the slit.
In this endoscope treatment tool, the second elastic member is rotated and the tip treatment section is pressed against the second elastic member in a state where the second elastic member is raised from the slit. In this state, the tip treatment section is placed in the slit. When inserted, the distal treatment section is accommodated in the treatment section insertion section so as to be attachable.

The invention according to claim 6 is the endoscope treatment tool according to any one of claims 1 to 5, wherein a plurality of the attachment mechanisms are arranged in the storage device. And
In this endoscope treatment tool, a plurality of attachment mechanisms for accommodating the distal treatment sections are arranged, so that a plurality of distal treatment sections can be attached.

The invention according to claim 7 is the endoscope treatment instrument according to claim 1 or 3, wherein the removal mechanism of the endoscope treatment section is provided at a proximal end of the distal treatment section. An attachment portion to the treatment instrument insertion portion, a fitted portion urged by a first elastic member so as to cover the attachment portion, provided in the storage device, and attached to a longitudinal axis of the distal treatment portion From one direction substantially perpendicular to the slit, the distal treatment section attached to the treatment instrument insertion section is passed and opened so as to be accommodated in the accommodation device, and the contained distal treatment section is axially viewed from the distal end side. And is displaced in the axial direction so that the distal treatment portion cannot pass through the slit, and the fitted portion is moved relative to the attachment portion against the first elastic member, And a second elastic member that exposes the attachment portion.
In this endoscopic treatment instrument, when the distal treatment section is inserted into the exterior, the distal treatment section is biased by the second elastic member, and the position of the slit on the exterior and the distal treatment section are displaced, leading to the distal treatment section. Can not escape. At this time, due to the action of the first elastic member and the second elastic member, the attachment portion connected to the treatment instrument insertion portion is exposed on the proximal end side of the distal treatment portion. Since the attachment portion is configured to be removable when exposed, the attachment portion can be removed from the treatment instrument insertion portion while the treatment instrument insertion portion is housed outside.

The invention according to claim 8 is the endoscope treatment tool according to any one of claims 1 to 7, wherein the storage device has an endoscope attachment portion attached to the endoscope. Features.
This endoscope treatment tool can be attached to the endoscope at the outside with an endoscope attachment portion. For this reason, the operation of removing the distal treatment section is facilitated.

The invention according to claim 9 is the endoscope treatment tool according to any one of claims 1 to 8, wherein the storage device includes a hook portion that can be engaged with the other storage device. It is characterized by having.
In this endoscope treatment tool, a plurality of external parts can be connected and used. For example, it is useful when a plurality of specimens are continuously collected from the same patient.

According to a tenth aspect of the present invention, in the endoscope treatment instrument according to the first aspect, the storage device includes a plurality of the distal treatment sections.
In this endoscope treatment tool, a plurality of distal treatment sections are waiting in a state where they can be attached.

According to an eleventh aspect of the present invention, in the endoscope treatment instrument according to the tenth aspect, the plurality of distal treatment sections are the same.
In this endoscopic treatment tool, a plurality of the same distal treatment sections are waiting in a state where they can be attached. For example, when the distal treatment section is consumed, the replacement work can be performed quickly.

According to a twelfth aspect of the present invention, in the endoscope treatment tool according to the tenth aspect, the plurality of distal treatment sections are different from each other.
In this endoscope treatment tool, a plurality of different distal treatment sections are waiting in a state where they can be attached. For example, when a treatment is performed by combining a plurality of types of distal treatment sections, the treatment can be performed quickly.

According to a thirteenth aspect of the present invention, there is provided a channel through which a treatment instrument insertion portion of a treatment instrument for an endoscope having a distal treatment section for treating a living body at a distal end, an insertion section inserted into a body, and the treatment instrument insertion. An operation unit provided at the proximal end of the treatment part, an attachment mechanism for attaching the distal treatment part to the treatment instrument insertion part, and a removal mechanism for removing the distal treatment part attached to the treatment instrument insertion part The endoscope was characterized by this.
In this endoscope system, an attachment mechanism is provided in the endoscope. For this reason, it can be made to stand by in the state which can attach a front-end | tip treatment part to the endoscope side. Moreover, the removal mechanism is provided and it can remove from a treatment part insertion part, accommodating a front-end | tip treatment part.

The invention according to claim 14 has an attachment / detachment mechanism for attaching / detaching a distal treatment section for treating a living body from a distal end of a treatment instrument insertion section of a treatment instrument for an endoscope inserted through a channel of an endoscope. The mounting / removal mechanism is housed in the housing groove for housing the treatment instrument insertion portion, a slit that opens the distal treatment portion so as to pass in one direction substantially perpendicular to the longitudinal axis, and the housing groove. And a second elastic member that urges the distal treatment section in the axial direction from the distal end side to shift the distal treatment section in the axial direction so that the distal treatment section cannot pass through the slit.
This accommodation device can wait for the distal treatment portion to be attached to the treatment portion insertion portion, and when the distal treatment portion is accommodated in the accommodation groove, the distal treatment is performed by the action of the second elastic member. The mounting part of the part is exposed. The attachment portion engages with the distal end of the treatment portion insertion portion, thereby enabling the distal treatment portion to be easily connected to the treatment portion insertion portion. Further, by exposing the attachment portion, the distal treatment portion in the connected state can be easily detached from the treatment portion insertion portion.

According to the present invention, the distal treatment section is configured to be detachable from the treatment section insertion section, and the accommodation apparatus including the attachment mechanism and the removal mechanism is provided. Therefore, the treatment section can be inserted while the distal treatment section is accommodated in the accommodation apparatus. It is possible to attach to or remove from the treatment part insertion part. Therefore, the surgeon can replace the distal treatment section as necessary, and the treatment can be performed quickly.
Further, in an endoscope treatment tool for collecting a sample from the body, a distal treatment section is configured to be detachable from a treatment section insertion section, and an accommodation device is provided that accommodates the distal treatment section in an attachable manner to the treatment section insertion section. Therefore, it becomes possible for the surgeon to attach the distal treatment section as necessary, and the treatment can be performed quickly.

A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows a usage state of a biopsy forceps 1 which is an endoscope treatment tool in the first embodiment. As shown in FIG. 2, the biopsy forceps 1 includes a treatment unit (tip treatment unit) 2 that can be attached to and detached from each other, an insertion unit (treatment instrument insertion unit) 3, and an operation unit 6.
The insertion unit 3 has a flexible sheath 4 made of a closely wound coil, and an operation wire 5 is inserted into the flexible sheath 4. The rear end of the flexible sheath 4 is fixed to the operation unit body 7 of the operation unit 6. The rear end of the operation wire 5 is attached to a slider 8 that is slidably fitted to the operation unit main body 7. A finger ring 7 a is provided at the rear end of the operation unit body 7. As shown in FIG. 2, a locking portion 9 is provided at the distal end of the flexible sheath 4, and a hook 10 is provided at the distal end of the operation wire 5. When the slider 8 is advanced or retracted, the hook 10 moves forward or backward via the operation wire 5.

The treatment section unit 2 has a flexible short sheath 11 made of a closely wound coil, and a treatment section 12 is attached to the distal end of the short sheath 11.
As shown in FIGS. 3 and 4, the treatment section 12 includes a pair of forceps cups 13 a and 13 b, a support body 15 that pivotally supports the forceps cups 13 a and 13 b by a support shaft 14, and the support body 15. And a pantograph mechanism 16 for opening and closing the forceps cups 13a and 13b. The forceps cups 13a and 13b have the same shape and are arranged to face each other. The pantograph mechanism 16 is formed by links 18a and 18b that are attached to the rearward extending arms of the forceps cups 13a and 13b by support pins 17a and 17b, and a support shaft 20 that couples the links 18a and 18b to the connecting member 19. Has been. A tip of a short wire 21 inserted into the short sheath 11 is fixed to the connecting member 19. The forceps cups 13a and 13b have accommodating portions 22a and 22b for accommodating a collected tissue as a specimen, and holes 23a and 22b are provided at the bottoms of the accommodating portions 22a and 22b so that the tissue is not crushed when the tissue is cut off. 23b is provided.
A guide member 24 is provided at the proximal end of the short sheath 11, a narrow diameter portion 24 a is formed on the guide member 24, and a pair of groove members 25 a and 25 b are formed at the proximal end of the narrow diameter portion 24 a. Yes. Further, a fitting member (fitting portion) 26 is provided at the base end of the guide member 24 so as to cover the pair of groove members 25a and 25b, and the fitting member 26 is urged toward the base end side to form a groove. A first spring 27, which is a first elastic member, is disposed on the outer periphery of the small diameter portion 24 a of the guide member 24 so as to cover the members 25 a and 25 b. A hook member 28 is provided at the proximal end of the short wire 21, and the hook member 28 is disposed between the groove members 25a and 25b.

The treatment section unit 2 and the insertion section unit 3 are connected as shown in FIGS.
As shown in FIG. 5, the fitted member 26 of the treatment section unit 2 is moved to the distal end side against the bias of the first spring 27, and the groove members 25a and 25b and the hook member 28 constituting the mounting portion are exposed. In this state, as shown in FIG. 6, the hook 10 of the insertion unit 3 is engaged with the hook member 28, and the protrusion 9a of the locking portion 9 is engaged with the grooves 25c and 25d of the groove members 25a and 25b. Then, as shown in FIG. 7, the fitted member 26 is biased toward the proximal end side by the first spring 27 and is fitted to the flexible sheath 4. When the slider 8 of the insertion unit 3 shown in FIG. 1 is moved forward and backward by connecting the treatment unit 2 and the insertion unit 3, the forceps cups 13 a, 13 a are connected via the operation wire 5, the short wire 21, and the pantograph mechanism 16. 13b can be opened and closed. When removing the treatment section unit 2 and the insertion section unit 3, it is sufficient to perform the reverse operation of the attachment.

The treatment unit 2 is stored in advance in storage devices 29a and 29b as shown in FIGS. In addition, the treatment tool for endoscopes of this embodiment shall be provided with at least 1 accommodation apparatus 29a, 29b.
The accommodation devices 29 a and 29 b include a base portion 31 protruding in the lateral direction from the support column 30 and a recovery bin (recovery container) 32 attached to the lower portion of the support column 30. The collection bin 32 is covered with a rubber plug 32b having a slit 32a. The pedestal 31 has an attachment mechanism 31 a for accommodating the treatment part unit 2, and an exterior 31 b of the treatment part unit 2 that is arranged alongside the attachment mechanism 31 a and is located above the recovery bin 32. Yes. The exterior 31b is an engaging portion in which a slit (groove) 33 is formed. The slit 33 is formed to have a size larger than the outer diameter of the flexible sheath 4 and smaller than the outer diameter of the fitted member 26.

On both sides of the base portion 31, hook portions 34a and 34b that can be engaged with each other are provided. As shown in FIG.10 and FIG.11, the accommodating apparatuses 29a and 29b can arrange | position the base part 31 side by side by engaging the hook parts 34a and 34b with each other. In the storage device 29b, an attachment portion (endoscope attachment portion) 35 for attaching an endoscope is provided above the base portion 31.
As shown in FIGS. 9 and 12, a storage portion 36 of the treatment portion unit 2 is formed in the attachment mechanism portion 31 a of the base portion 31. The storage unit 36 includes a storage groove 39 (see FIG. 12) that stores a second spring 38 that is a second elastic member connected to the receiving unit 37, and a slit 40, and a lid that covers the storage groove 39. It is comprised from the material 41 and the attachment field 42 where the groove members 25a and 25b and the hook member 28 of the treatment part unit 2 are exposed. The slit 40 of the lid 41 is formed in a shape similar to that of the treatment section unit 2 through which the treatment section unit 2 can pass. That is, the treatment section unit 2 has the support 15, the forceps cups 13 a and 13 b, and the fitted member 26 having a larger diameter than the outer diameter of the short sheath 11, and the slit 40 has a narrow width through which the short sheath 11 can pass. The portion 40a, the support 15 and the large portion 40b through which the forceps cups 13a and 13b can pass, and the large portion 40c through which the fitted member 26 can pass are formed.

  As shown in FIG. 13, the treatment section unit 2 is biased in the proximal direction by the second spring 38 in the storage groove 39, and the fitted member 26 is engaged by the locking end 39 a at the end of the storage groove 39. The first spring 27 is compressed, and the groove members 25a and 25b and the hook member 28 are relatively moved to be exposed to the attachment site 42. As described above, the second spring 38 has stronger elasticity than the first spring 27. Then, as shown in FIG. 14, in the state where the lid member 41 is covered, the shape of the slit 40 formed in the lid member 41 by the second spring 38 and the outer shape of the treatment unit unit 2 are shifted, and the treatment unit unit 2. An overlapping portion 41 a is generated such that the lid member 41 overlaps with the lid member 41, so that the treatment portion unit 2 does not pass through the slit 40 and the treatment portion unit 2 is prevented from being detached from the storage portion 36. That is, the attachment mechanism portion 31a accommodates the treatment portion unit 2 so that the treatment portion unit 2 cannot be extracted in a direction perpendicular to the axial direction (upward in FIG. 9) in a natural state.

Next, the operation of the biopsy forceps system 1 having such a configuration will be described.
First, as shown in FIG. 15, the accommodation device 29 b having the attachment portion 35 is hooked and attached to the forceps port 43 a of the endoscope 43. When biopsy is performed a plurality of times, as shown in FIG. 16, the convex portion of the hook portion 34a of the storage device 29a is engaged with and fixed to the concave portion of the hook portion 34b of the storage device 29b. Note that as many storage devices 29a as necessary for biopsy are attached.
In addition, a fixing solution 44 such as formalin solution is placed in the collection bottle 32 of the storage devices 29a and 29b.

Next, as shown in FIG. 17, the vicinity of the distal end of the insertion unit 3 is gripped, and the locking portion 9 and the hook 10 at the distal end are exposed to the mounting field 42 of the storage device 29 b. 25a, 25b and the hook member 28 are engaged from above. That is, as shown in FIG. 18, the hook 10 and the hook member 28 are engaged, and the protrusions 9a of the locking portion 9 are engaged with the grooves 25c and 25d of the groove members 25a and 25b, respectively. Then, as shown in FIG. 19, the insertion unit 3 is pushed forward in the axial direction of the treatment unit 2.
Then, as shown in FIG. 20, the second spring 38 in the accommodation device 29 b is compressed by the pushing force, and the first spring 27 extends to maintain the position of the fitted member 26, and the distal end of the treatment section unit 2. Will move forward. Accordingly, the fitted member 26 covers the connection portion (such as the hook 10) between the treatment section unit 2 and the insertion section unit 3 and the end of the flexible sheath 4 of the insertion section unit 3, and the outer shape of the treatment section unit 2 is This coincides with the outer shape of the slit 40 of the lid 41 of the storage device 29b. In this state, as shown in FIGS. 21 and 22, the treatment unit 2 passes through the slit 40 of the storage device 29 b while being connected to the distal end of the insertion unit 3 by pulling upward. And the connection of the treatment unit 2 is completed.

Next, the biopsy forceps 1 having been connected to the treatment unit 2 is inserted into the treatment instrument insertion channel of the endoscope 43 as shown in FIG. The treatment portion 12 is brought close to the target tissue to be examined, a thumb is inserted into the finger ring 8a shown in FIG. 1, and the slider 8 is held between the index finger and the middle finger and moved forward. As a result, the pantograph mechanism 16 shown in FIG. 3 is activated to open the forceps cups 13a and 13b. Next, when the forceps cups 13a and 13b are opened, the biopsy forceps 1 is pressed against the tissue and the slider 8 is retracted to close the forceps cups 13a and 13b, and the tissues are accommodated in the receiving portions 22a and 13b of the forceps cups 13a and 13b. 22b. When the forceps cups 13a and 13b are completely closed, the entire biopsy forceps 1 is pulled to complete the tissue sampling.
Thereafter, the biopsy forceps 1 is removed from the treatment instrument insertion channel of the endoscope 43, and then, as shown in FIG. 24, the distal end of the biopsy forceps 1 is recovered from the slit 32a of the rubber plug 32b of the storage device 29b. Plug in. As shown in FIG. 25, the flexible sheath 4 is inserted into the slit 33 of the storage device 29b so that the fitted member 26 of the treatment section unit 2 is below the pedestal 31 of the storage device 29b. Thus, the flexible sheath 4 is pulled upward. Then, as shown in FIG. 27, the fitted member 26 comes into contact with and catches on the bottom surface of the pedestal 31, and as shown in FIG. 28, the first spring 27 is compressed and the treatment unit 2 and the insertion unit 3 are connected. The connection part is exposed. Accordingly, as shown in FIGS. 29 and 30, the insertion unit 3 can be removed from the treatment unit 2 and only the treatment unit 2 can be left in the recovery bin 32. As shown in FIG. 31, the collected tissue may be handed over to the person who processes the specimen together with the storage device 29b.

Further, as shown in FIG. 32, the collected tissue 45 may be dropped into the fixative 44 by pressing the inner short wire 21 and opening the forceps cups 13 a and 13 b using a bottle 56 or the like.
In addition, when performing a biopsy several times, what is necessary is just to repeat the said effect | action. In this case, as shown in FIGS. 33 and 34, it is preferable to use the storage device 29a attached to the storage device 29b attached to the endoscope 43. Then, it is possible to remove the sample every time a biopsy is completed and to process the sample.

According to the present embodiment, the treatment section unit 2 is configured to be detachable with respect to the insertion section unit 3, and the accommodation device 29a including the attachment mechanism section 31a of the treatment section unit 2, the exterior 31b, and the recovery bin 32, 29b, the treatment unit 2 from which the tissue has been collected is inserted into the recovery bin 32, and can be removed from the insertion unit 3 so that the tissue can be collected quickly, especially when multiple times of collection are performed. Since the next collection can be performed without waiting for the processing of the collected tissue, the tissue can be collected quickly.
Here, the external part 31a can expose the attachment part of the treatment part unit 2 such as the hook member 28 and the groove members 25a and 25b only by pulling upward with the insertion part unit 3 inserted into the slit 33. With a simple configuration, the endoscope operator can be detached with one hand.
The biopsy forceps 1 may not include the accommodation devices 29a and 29b.

35 to 38 show a second embodiment of the present invention.
As shown in FIG. 35, in this embodiment, the storage device 46 is different from the first embodiment. In the storage device 46 of the present embodiment, a frame 46a is provided at the lower end, and a recovery bin 47 is provided on the frame 46a so as to be swingable left and right by pins 48a and 48b (see FIG. 36). Further, as shown in FIGS. 36 and 37, a collected tissue extractor 50 is formed in the rubber stopper 49 of the recovery bottle 47. The collected tissue extracting tool 50 enters the accommodating portions 22a and 22b of the forceps cups 13a and 13b from the holes 23a and 23b of the forceps cups 13a and 13b of the treatment unit unit 2, and includes the protruding portions 50a and 50b that push out the collected tissue 45. Have. Other configurations are the same as those in the first embodiment.

  After the biopsy, the treatment unit 2 is removed from the insertion unit 3 and left in the recovery bin 47, and the forceps cups 13a and 13b are opened in the recovery bin 47. Then, the protrusions 50a and 50b of the collected tissue extractor 50 enter the accommodating portions 22a and 22b to push out the collected tissue 45. In this state, as shown in FIG. 38, when the collection bin 47 is swung left and right, the collected tissue 45 is detached from the forceps cups 13a and 13b. Thereby, the collected tissue can be easily dropped into the fixing solution 44.

  According to this embodiment, the same effect as the first embodiment can be obtained. Furthermore, since the collection bin 47 is provided so as to be swingable and includes the collected tissue extractor 50, it is easy to detach the tissue from the treatment section unit 12. For this reason, if the rubber stopper 32b of the recovery bottle 32 is removed, the tissue can be taken out as it is.

39 to 42 show a third embodiment of the present invention.
This embodiment is a cytodiagnosis brush 51. The treatment unit 52 of the cytodiagnosis brush 51 is made of a resin such as a fluorine tube, and is provided at the distal end of a short sheath 53 having a large diameter portion 53a formed on the distal end side and the short wire 21, and is made of nylon (DuPont). A brush 54 as a cell collection member made of a fiber such as a trademark is provided, and a tip tip 55 having the same diameter as the outer diameter of the large diameter portion 53a of the short sheath 53 is provided at the tip of the brush 54. The brush 54 is housed in the large-diameter portion 53a of the short sheath 53, and when the slider 8 is advanced, the brush 54 protrudes from the distal end of the short sheath 53 through the operation wire 5 and the short wire 21 as shown in FIG. To do. Other configurations are the same as those in the first embodiment.
The operation and effect of this embodiment is different from that of the first embodiment only in that the brush 54 is protruded from the distal end of the short sheath 53 in the body cavity and the target site is rubbed with the brush 54 to collect cells.

FIG. 43 shows a fourth embodiment of the present invention.
As shown in FIG. 43, the endoscope 60 has a storage device 61 attached below the forceps opening 43a. The accommodation device 61 includes a base portion 31 and a support column 30, and a collection bin 32 is detachably inserted into a holder 62 below the support column 30. Other configurations are the same as those of the first embodiment.
In this endoscope 60, since the storage device 61 is fixed, it is easy to handle. Further, since only the recovery bin 32 is taken out and handed over to the person who performs the sample processing, the processing is easy. Other operations and effects are the same as those of the first embodiment.

44 to 61 show a fifth embodiment of the present invention.
First, FIGS. 44 and 45 show a storage device 70 in the present embodiment. The accommodation device 70 has an attachment portion (endoscope attachment portion) 35 attached to the endoscope 43. At the lower end portion of the attachment portion 35, a pedestal portion 72 extends in a direction perpendicular to the axis of the endoscope 43. A plurality of attachment / detachment mechanism portions 73 that accommodate the treatment portion units 80, 91, 95, 100, and 105 are arranged on the base portion 72 at predetermined intervals. Each attachment / detachment mechanism 73 is configured similarly to the attachment mechanism 31a (see FIG. 9) of the first embodiment. In these attachment / detachment mechanism portions 73, a treatment portion unit 80, a treatment portion unit 91, a treatment portion unit 95, a treatment portion unit 100, and a treatment portion unit 105 are accommodated in this order from the lower side of the attachment portion 35.

46 to 60 show the configurations of these multiple types of endoscope treatment tools.
FIG. 46 shows a use state of a needle knife 81 which is an endoscope treatment tool. The needle knife 81 includes a treatment unit (tip treatment unit) 80 that can be attached to and detached from each other, an insertion unit (treatment instrument insertion unit) 82, and an operation unit 83.
The insertion unit 82 covers the outer periphery of the flexible sheath 4 made of a closely wound coil with an insulating sheath 84, and the operation wire 5 is inserted into the flexible sheath 4. The rear end of the insertion unit 82 is fixed to the operation unit body 7 of the operation unit 83. The rear end of the operation wire 5 is attached to a slider 8 that is slidably fitted to the operation portion main body 7a. A connector 85 is attached to the slider 8. The connector 85 is connected to a cord from a high frequency power supply (not shown), and can supply predetermined power to the treatment unit 80 via the operation wire 5 and the short wire 21. In this case, the operation wire 5 and the short wire 21 are manufactured from a conductive material and function as a driving force transmission unit and also as an energization unit.

  As shown in FIGS. 46 to 49, the treatment section unit 80 has a flexible short sheath 86 formed of an insulating material, and the distal end of the short sheath 86 has a larger diameter than the short sheath 86. A diameter portion 87 is provided. The enlarged diameter portion 87 is formed with an opening 87a having a reduced diameter at the tip, and a cylindrical holding member 88 is attached to the inner peripheral surface near the opening 87a. Furthermore, a needle-like incision knife part 89 serving as a treatment part is accommodated in the enlarged diameter part 87 so as to penetrate the holding member 88. The proximal end of the incision knife part 89 is fixed to the distal end of the short wire 21 by a fixing member 90. That is, when the operation wire 5 is advanced, the short wire 21 is advanced, and the distal end of the incision knife portion 89 projects from the distal end of the enlarged diameter portion 87 as shown in FIG. Here, the outer diameter of the fixing member 90 is larger than the inner diameter of the short sheath 86 and the inner diameter of the holding member 88, so that the moving amount when the incision knife portion 89 moves forward and backward is regulated by the fixing member 90. It has become. In the treatment unit 80, the fitted member 26 is formed of an electrically insulating member or is electrically insulated. Other configurations are the same as those of the third embodiment. Note that the short sheath 86 may be formed by covering the outer periphery of a flexible sheath made of a closely wound coil, like the insertion unit 82, with an insulating sheath.

  FIG. 50 shows a use state of the high-frequency knife 92 of another form. The insertion unit 82 and the operation unit 83 of the high-frequency knife 92 are shared with the needle knife 81. As shown in FIGS. 50 and 51, the treatment unit 91 is provided with an incision knife portion 93 (treatment portion) that is retractably accommodated in the enlarged diameter portion 87 in a bar shape, and is attached to the distal end of the incision knife portion 93. An insulating chip 94 is attached. Other configurations are the same as those of the needle knife 81.

  FIG. 52 shows a use state of a hook-type knife 96 that is a treatment instrument for an endoscope. The insertion unit 82 and the operation unit 83 of the hook type knife 96 are shared with the needle knife 81. Further, as shown in FIGS. 52 and 53, the treatment unit 95 has an incision knife portion 97 that is housed in the diameter-expanded portion 87 so as to be able to appear and retract. The incision knife portion 97 has its tip bent into a substantially L shape. Other configurations are the same as those of the needle knife 81.

  FIG. 54 shows a usage state of the grasping forceps 101 which is an endoscope treatment tool. The insertion unit 82 and the operation unit 83 of the grasping forceps 101 are shared with the needle knife 81. As shown in FIGS. 54 to 56, the treatment section unit 100 has a short sheath 104 in which the outer periphery of the closely wound coil is covered with an insulating sheath, and a support section 15 is provided at the distal end of the short sheath 104. A pair of gripping members 102 are provided on the support portion 15 so as to be freely opened and closed by a support shaft 14. Each gripping member 102 has a plurality of toothed teeth arranged along the length direction, and the pair of gripping members 102 are arranged to face each other so that these toothed teeth mesh with each other, and the short wire 21 is interposed via the pantograph mechanism 16. It is connected to the. Other configurations are the same as those of the first embodiment.

  FIG. 57 shows a use state of the high-frequency coagulator 106 that is a treatment instrument for endoscope. The insertion unit 82 and the operation unit 83 of the high frequency coagulator 106 are shared with the needle knife 81. In addition, as shown in FIGS. 57 and 58, the treatment section unit 105 has a cautery section 107 attached to the distal end of the enlarged diameter section 87. The short wire 21 is electrically connected to the cautery portion 107. Other configurations are the same as those of the needle knife 81.

The action of these endoscopic treatment tools 81, 92, 96, 101, 106 will be described by taking mucosal resection as an example. Prior to the treatment, physiological saline is injected into the mucous membrane using an injection needle or the like, and the mucosa to be excised and its peripheral portion are bulged in advance.
First, an initial incision is made with the needle knife 81. That is, as shown in FIG. 44, a needle-like knife accommodated in the first attachment / detachment mechanism 73 is attached by hooking the accommodation device 70 having the attachment 35 to the forceps port 43a of the endoscope 43. 81 treatment unit units 80 are connected to the insertion unit 82. The connection procedure is the same as in the first embodiment.
Next, the needle knife 81 to which the treatment unit 80 is connected is inserted into the treatment instrument insertion channel of the endoscope 43, and the tip thereof is brought close to the mucous membrane to be excised while observing with the endoscope 43. Then, the slider 8 is advanced, and the incision knife part 89 is projected from the enlarged diameter part 87 and pressed against the tissue. A cord from a high-frequency power source is connected to the connector 85, and the incision knife part 89 is energized to incise the mucous membrane. When the initial incision is completed, the energization is stopped, the slider 8 is retracted, and the incision knife part 89 is accommodated in the enlarged diameter part 87. Further, the entire needle knife 81 is pulled and removed from the endoscope 43.

  When removing the treatment section unit 80 of the needle knife 81 from the insertion section unit 82, the treatment section unit 80 is inserted into the storage groove 39 of the first open attachment / detachment mechanism section 73. In other words, the distal end of the diameter-expanded portion 87 of the treatment portion unit 80 is pressed against the receiving portion 37 to compress the second spring 38, and the treatment portion unit 80 is inserted into the storage groove 39 from the slit 40 as shown in FIG. Insert it. Thereafter, when the force that has compressed the second spring 38 is removed, as shown in FIG. 60, the second spring 38 is restored, and the treatment section unit 80 is moved to the attachment site 42 side. At this time, the fitted member 26 is locked by the locking end 39a, but the groove members 25a and 25b and the hook member 28, and the locking portion 9 and the hook on the insertion unit 82 side engaged with the groove members 25a and 25b. 10 passes between the locking ends 39a and is exposed to the attachment site 42. Therefore, if the insertion unit 82 is pulled upward (in a direction substantially perpendicular to the length direction of the storage groove 39), the engagement between the groove members 25a and 25b and the locking portion 9 is released, and the hook 10 and the hook 10 The engagement with the member 28 is released, and the treatment unit 80 is removed from the insertion unit 82.

Next, the entire circumference is cut with a high-frequency knife 92 shown in FIG. That is, since the treatment section unit 91 of the high-frequency knife 92 is accommodated in the second mounting / removal mechanism section 73, the groove exposed to the mounting field 42 of the mounting / removal mechanism section 73. The distal end of the insertion unit 82 is engaged with the members 25 a and 25 b and the hook member 28. Further, the insertion unit 82 is pushed in the axial direction of the storage groove 39 and in the direction in which the second spring 38 is compressed, and the distal end of the insertion unit 82 is inserted into the fitted member 26, and the treatment unit 91 is It advances and the shape of the treatment part unit 91 and the shape of the slit 40 are made to correspond substantially. In this state, the insertion unit 82 is lifted together with the treatment unit 91 upward, that is, in a direction substantially orthogonal to the axis of the treatment unit 91, and the treatment unit 91 is removed from the attachment / detachment mechanism 73.
Then, the high-frequency knife 92 is inserted into the endoscope 43, and the entire circumference of the mucous membrane to be excised is incised starting from the portion where the initial incision has already been made while being energized.

Here, the high-frequency knife 92 requires skill to incise the submucosal layer. Therefore, after performing a full-circumferential incision of the mucosa, the high-frequency knife 92 is removed from the endoscope 43 and incision is performed with the hook-type knife 96. . Removal of the treatment section unit 91 of the high-frequency knife 92 is performed in the same manner as described above using the second attachment / detachment mechanism section 73, and the insertion section unit 91 is returned to the unconnected state. Further, the treatment section unit 95 of the hook type knife 96 accommodated in the third attachment / detachment mechanism section 73 is connected to the treatment section unit 95 while engaging the distal end of the insertion section unit 82, and the treatment section unit 95 is taken out from the storage groove 39. .
When the bent distal end portion of the incision knife portion 97 of the hook type knife 96 is protruded from the enlarged diameter portion 87, inserted into the submucosa layer from the incision portion around the entire mucous membrane and excised while energized, and the mucosa is peeled off The mucous membrane is recovered with the grasping forceps 101 shown in FIG. Removal of the treatment unit 95 of the hook-type knife 96 and connection of the treatment unit 100 of the grasping forceps 101 are performed according to the above-described procedure. The grasping member 102 is opened and closed by moving the slider 8 forward and backward while the energization is stopped. When the mucous membrane is grasped between the pair of grasping members 102, the body cavity is moved together with the endoscope 43 while the grasping forceps 101 is inserted. Remove from the inside.
Further, when bleeding occurs during the treatment, the treatment unit unit 105 of the high-frequency coagulator 106 shown in FIG. 57 is connected to the insertion unit 82, and the bleeding part 107 is cauterized to stop bleeding. . It is also possible to stop the bleeding by sandwiching the bleeding site with the grasping forceps 101 and energizing in that state.

According to the present embodiment, a plurality of types of treatment unit 80, 91, 95, 100, 105 are configured to be detachable with respect to one insertion unit 82, and the treatment unit 80, 91, 95, 100, Since 105 can be exchanged, it is not necessary to transfer an endoscopic treatment tool to an assistant, and a quick treatment can be performed. Specifically, various types of excision of living tissue, recovery of excised tissue, and hemostasis can be performed.
The accommodation device 70 is provided with an attachment / detachment mechanism 73 to accommodate a treatment unit (for example, the treatment unit 80), and the treatment unit is attached to the insertion unit 82 with the attachment / detachment mechanism 73. Since it can be removed by performing the opposite operation at the time of removal, the endoscope operator (operator) can attach and remove with one hand with a simple configuration.
Furthermore, since a plurality of attachment / detachment mechanism portions 73 are arranged around the axis of the endoscope 43 and are accommodated in the order in which a plurality of types of treatment portion units 80, 91, 95, 100, 105 are used, treatment is performed smoothly. be able to.

61, two mounting / dismounting mechanism portions 73 may be provided on the base portion 111, and hooking portions 34a and 34b may be provided on both sides of the base portion 111. In this case, the other storage device 112 can be engaged as necessary. In the other storage device 112, a plurality of attachment / detachment mechanism portions 73 are arranged on a base portion 113 having hooking portions 34a and 34b.
Moreover, you may accommodate the same kind of treatment part unit (for example, treatment part unit 80) in the some attachment / detachment mechanism part 73. FIG. When the treatment portion of the treatment section unit 80 is consumed, it can be replaced, and treatment can be performed quickly.

62 to 65 show a sixth embodiment of the present invention.
As shown in FIG. 62, the mounting / removal mechanism 115 is provided on the base 72 of the storage device 70. A storage groove 116 is formed in the attachment / detachment mechanism portion 115. The storage groove 116 has a locking end 39 a protruding from a base end portion communicating with the attachment site 42. Further, the tip of the storage groove 116 is wide, and the retractor 117 is stored therein. The retractor 117 has an elongated shape, and a proximal end portion 117 a thereof is disposed on the distal end side of the storage groove 116. A support shaft 118 passes through the base end portion 117 a so as to be orthogonal to the axis of the storage groove 116. As shown in FIG. 63, the outer surface of the base end portion 117a is an arcuate curved surface in a side view. As shown in FIG. 62, the retractor 117 is provided with a concave portion 117c having an opening on the tip end portion 117b side, and the second spring 38 is accommodated in the concave portion 117c. One end of the second spring 38 is fixed to the inner surface of the base end portion 117a, and the receiving portion 37 is fixed to the other end. A part of the receiving portion 37 protrudes from the opening of the retractor 117 in a natural state.

Further, as shown in FIG. 64, a cover body 120 is covered with the storage groove 116 of the attachment / detachment mechanism portion 115. The lid 120 has a slit 121, and the slit 121 can pass through the treatment unit 100, and has a shape similar to that of the treatment unit 100. That is, from the base end side, a large-diameter portion 121c through which the fitted member 26 can pass, a narrow-width portion 121a through which the short sheath 86 can pass, and a large-diameter portion 121b through which the support body 15 and the gripping member 102 can pass. Is formed.
Here, the large-diameter portion 121b of the slit 121 is formed so that the retractor 117 can also pass therethrough. For this reason, as shown in FIG. 65, the retractor 117 can be raised so as to protrude from the storage groove 116 and the slit 121 with the support shaft 118 as the rotation center.

Next, the operation of the attachment / detachment mechanism 115 will be described.
When the treatment unit 100 is accommodated in the attachment / detachment mechanism 115, the pair of gripping members 102 of the treatment unit 80 are pressed against the receiving portion 37 with the retractor 117 raised as shown in FIG. The second spring 38 is compressed. Accordingly, the tips of the receiving portion 37 and the pair of gripping members 102 enter the retractor 117, so that the retractor 117 is rotated around the support shaft 118 so as to be horizontal while maintaining this state. At this time, the treatment section unit 100 passes through the slit 121 together with the retractor 117 and is received in the storage groove 116. Thereafter, when the hand is released from the treatment section unit 100, the second spring 38 is restored, and the treatment section unit 100 is moved to the mounting site 42 side, and as shown in FIG. 62, the groove members 25a and 25b and the hook member 28 is exposed.

Further, when attaching the treatment section unit 100 to the insertion section unit, after engaging the groove members 25a, 25B and the like with the insertion section unit 82, the treatment section unit 100 is pushed into the retractor 117 side together with the insertion section unit 82. The shape of the slit 121 and the shape of the treatment unit 100 are matched while compressing the second spring 38. In this state, the retractor 117 is rotated around the support shaft 118, and the treatment section unit 100 is extracted from the slit 121.
Further, when the treatment unit 100 is removed from the insertion unit 82, the same operation as that when the treatment unit 100 is housed in the attachment / detachment mechanism 115 is performed with the insertion unit 82 attached. When the second spring 38 is restored after the treatment portion unit 100 is accommodated in the accommodation groove 116, the engaging portion between the treatment portion unit 100 and the insertion portion unit 82 is exposed to the attachment site 42, so that only the insertion portion unit 82 is provided. The insertion unit 82 is detached from the treatment unit 100.

According to this embodiment, the receiving portion 37 and the second spring that expose the groove members 25a and 25b of the treatment portion unit 100 while receiving the distal end of the treatment portion unit 100 are accommodated in the retractor 117, and the retractor 117 is supported. Since it can be raised around the shaft 118, the operation of accommodating the treatment section unit 100 in the attachment / detachment mechanism section 115 and taking out the accommodated treatment section unit 100 is facilitated. For this reason, the treatment unit 100 can be easily attached and detached.
62 to 65 show a state in which the treatment section unit 100 of the grasping forceps 101 is accommodated, but treatment section units (for example, the treatment section unit 80) of other endoscope treatment tools. Can be accommodated.

FIG. 66 shows a seventh embodiment of the present invention.
The endoscope 130 has an operation unit 131, and an insertion unit 135 to be inserted into a body cavity is provided at the distal end of the operation unit 131. Furthermore, a treatment instrument insertion channel is formed in the insertion section 135 and the operation section 131, and a forceps port 130a of the treatment instrument insertion channel is provided on the lower side of the operation section 131. A storage device 132 is integrally attached below the forceps port 130a. The accommodation device 132 includes a base part 133, and the base part 133 extends so as to be substantially orthogonal to the length direction of the operation part 131. In this base part 133, for example, three attachment / detachment mechanism parts 73 are arranged at equal intervals on an arc centered on the axis of the operation part 131. The first attachment / detachment mechanism 73 is disposed below the forceps port 130a.

When using the endoscope 130, a necessary treatment unit (for example, the treatment unit 80) is selected and incorporated in the storage device 132 of the endoscope 130 before performing the treatment. Other operations are the same as those of the storage device in the fifth embodiment.
According to the present embodiment, since the storage device 132 is integrally provided in the endoscope 130, the treatment unit is selected in the preparation stage, so various combinations according to the procedure are possible. . As for other effects, the same effects as those of the housing device 70 in the fifth embodiment can be obtained in the endoscope.

The present invention can be widely applied without being limited to the above embodiments.
For example, the storage devices 29a, 112 may be connected to the storage devices 29b, 46, 61, 70, 110. 66 may be provided with hooking portions 34a and 34b to connect the other storage devices 29a and 112 to each other.
A retractor 117 may be provided in the attachment mechanism portion 31a of the storage devices 29a, 29, 46, and 61.
The attachment / detachment mechanism parts 73 and 115 may be used only for attaching or removing the treatment part unit.
Further, the accommodation devices 29a, 29b, 46, 61, 70, 110, 112 may not have the attachment portion 35. In this case, the treatment section unit (for example, the treatment section unit 80) taken out from the endoscope 43 is attached and detached by the accommodation devices 29a, 29b, 46, 70, 110, and 112 placed on other platforms. To do.
Furthermore, in the storage devices 29a, 29b, 46, the recovery bin 32 may be configured separately. In this case, the assistant only needs to handle the collection bin 32. In this case, it is preferable that the recovery bin 32 is configured to be detachable from the support column 30.

It is a side view which shows the use condition of the treatment tool in embodiment of this invention. It is a figure which shows the state which removed the treatment part unit and the insertion part unit. It is the top view which made a part of front-end | tip part of a treatment tool the cross section. It is the side view which made a part of front-end | tip part of a treatment tool the cross section. It is a figure explaining the procedure which attaches a treatment part unit. It is a figure explaining the procedure which attaches a treatment part unit, Comprising: It is a figure which shows the state engaged with the insertion part unit. It is a figure explaining the procedure which attaches a treatment part unit, Comprising: It is a figure which shows the state connected to the insertion part unit. It is a figure which shows the structure of a storage apparatus. It is a figure which shows the structure of a storage apparatus. It is a figure explaining the case where two accommodating apparatuses are engaged. It is a figure which shows the state which engaged two accommodating apparatuses. It is an exploded view which shows the structure of an attachment mechanism part. It is a figure which shows the state which inserted the treatment part unit in the attachment mechanism part, Comprising: It is a figure which shows the state which removed the cover material. It is a figure which shows the state which inserted the treatment part unit in the attachment mechanism part. It is a figure which shows the state which attached the accommodating apparatus to the endoscope. It is a figure which shows the state which attached the two accommodating apparatuses to the endoscope. It is a figure explaining the procedure which attaches an insertion part unit to the treatment part unit accommodated in the accommodating apparatus. It is a figure explaining the state by which the insertion part unit was attached to the treatment part unit accommodated in the accommodating apparatus. It is a figure which shows the state which pushed in the insertion part unit which attached the treatment part unit. It is a figure which shows the state which the treatment part unit was pushed in and substantially corresponded with the shape of the slit. It is a figure which shows the state which took out the treatment part unit attached to the insertion part unit from the accommodating apparatus. It is an enlarged view which shows the state which took out the treatment part unit attached to the insertion part unit from the accommodating apparatus. It is a figure explaining the procedure which inserts the treatment part unit attached to the insertion part unit through an endoscope. It is a figure explaining the procedure which inserts the treatment part unit which extract | collected the sample into the collection bottle. It is a figure which shows the state which inserted the treatment part unit which extract | collected the sample into the collection bottle. It is a figure which shows the state which inserted the insertion part unit in the external slit. It is sectional drawing which shows the state which inserted the insertion part unit in the external slit. It is sectional drawing which shows the state which inserted the insertion part unit into the external slit, Comprising: It is a figure which shows the state which pulled the insertion part unit upwards and exposed the attachment part. It is sectional drawing which shows the state which removed the treatment part unit from the insertion part unit. It is a figure which shows the state which removed the treatment part unit from the insertion part unit. It is a figure which shows the state removed from the endoscope with the treatment part unit inserted in the recovery bottle. It is a figure which shows the state which opened the forceps cup of the treatment part unit inserted in the collection | recovery pin with a pin. It is a figure which shows the order used when two accommodating apparatuses are attached. It is a figure which shows the state removed from the 2nd accommodation apparatus, after collect | recovering tissues | tissues to the 1st accommodation apparatus. It is a figure which shows the structure of a storage apparatus. FIG. 36 is a cross-sectional view taken along line AA of FIG. FIG. 36 is a cross-sectional view taken along line AA of FIG. 35, showing a state where the treatment unit is inserted into the recovery bin. It is a figure which rocks the recovery bottle which inserted the treatment part unit. It is a figure which shows the structure of the cytodiagnosis brush as a treatment tool. It is an enlarged view of the front-end | tip part of a treatment tool. It is a figure which shows the state which inserted the treatment part unit in the attachment mechanism part, Comprising: It is a figure which shows the state which removed the cover material. It is a figure which shows the state which inserted the treatment part unit in the attachment mechanism part. It is a figure which shows the endoscope with which the accommodating apparatus was attached. It is a figure which shows the state which attached the accommodating apparatus to the endoscope. It is a figure which shows a storage apparatus. It is a figure which shows the use condition of the treatment tool for endoscopes. It is a figure which shows the use condition of the treatment tool for endoscopes. It is a partial cross section figure which shows the state which inserted the treatment part unit in the accommodation groove | channel of the attachment removal mechanism part. It is a figure which shows the state which inserted the treatment part unit in the attachment removal mechanism part. It is a figure which shows the use condition of the treatment tool for endoscopes. It is a partial cross section figure which shows the state which inserted the treatment part unit in the accommodation groove | channel of the attachment removal mechanism part. It is a figure which shows the use condition of the treatment tool for endoscopes. It is a partial cross section figure which shows the state which inserted the treatment part unit in the accommodation groove | channel of the attachment removal mechanism part. It is a figure which shows the use condition of the treatment tool for endoscopes. It is a partial cross section figure which shows the state which inserted the treatment part unit in the accommodation groove | channel of the attachment removal mechanism part. It is a figure which shows the state which inserted the treatment part unit in the attachment removal mechanism part. It is a figure which shows the use condition of the treatment tool for endoscopes. It is a partial cross section figure which shows the state which inserted the treatment part unit in the accommodation groove | channel of the attachment removal mechanism part. It is a figure which shows the state which inserted the treatment part unit in the attachment removal mechanism part in the state which connected the treatment part unit to the insertion part unit. It is a figure which shows the state which inserted the treatment part unit in the attachment / detachment mechanism part in the state which connected the treatment part unit to the insertion part unit, and exposed the engaging part. It is a figure which shows a storage apparatus. It is a partial cross section figure which shows the state which inserted the treatment part unit in the accommodation groove | channel of the attachment removal mechanism part. FIG. 63 is a cross-sectional view taken along arrow X in FIG. 62 and shows a state where the treatment unit is not inserted. It is a figure which shows the state which inserted the treatment part unit in the attachment removal mechanism part. FIG. 64 is a diagram showing a state where the retractor is raised from the state of FIG. 63. It is a figure which shows an endoscope provided with an accommodation apparatus.

Explanation of symbols

1 Biopsy forceps (endoscopic instrument)
2,80,91,95,100,105 Treatment unit (tip treatment unit)
3,82 Insertion unit (treatment instrument insertion part)
6,83 Operation part 25a, 25b Groove member (attachment part)
26 Fitting member (fitting part)
27 First spring (first elastic member)
28 Hook member (mounting part)
29a, 29b, 46, 61, 70, 110, 112, 132 accommodation device 31a attachment mechanism (attachment mechanism)
31b External (locking part)
33 Slit (Groove)
34a, 34b Hook 35 Mounting part (Endoscope mounting part)
38 Second spring (second elastic member)
40 Slits 43, 60, 130 Endoscopes 73, 115 Attachment / detachment mechanism (attachment mechanism, removal mechanism)
117 Retractor 131 Operation part 135 Insertion part

Claims (14)

A tip treatment unit inserted into the body and treating the living body;
An operation section for operating the distal treatment section;
A treatment instrument insertion portion having the operation portion at a proximal end and the distal treatment portion being detachable at a distal end;
An accommodation device including an attachment mechanism capable of installing the distal treatment section, an attachment mechanism for attaching the distal treatment section to the treatment instrument insertion section, and a removal mechanism for removing the distal treatment section attached to the treatment instrument insertion section;
An endoscopic treatment instrument comprising: A tip treatment section that is inserted into the body and collects a specimen from the body;
An operation section for operating the distal treatment section;
A treatment instrument insertion portion having the operation portion at a proximal end and the distal treatment portion being detachable at a distal end;
A storage device including an attachment mechanism capable of interiorizing the distal treatment section and attaching the distal treatment section to the treatment instrument insertion section;
An endoscopic treatment tool comprising:   The endoscopic treatment tool according to claim 2, wherein the housing device includes a detaching mechanism for removing the distal treatment section attached to the treatment instrument insertion section. The attachment mechanism of the endoscope treatment part is:
An attachment portion to the treatment instrument insertion portion provided at a proximal end of the distal treatment portion, and a fitted portion urged by a first elastic member so as to cover the attachment portion;
A slit provided in the storage device and opening in a direction substantially perpendicular to the longitudinal axis of the distal treatment section so as to pass through the distal treatment section, and urging the distal treatment section in the axial direction from the distal side. The distal treatment portion is shifted in the axial direction so that it cannot pass through the slit, and the fitting portion is moved relative to the attachment portion against the first elastic member to expose the attachment portion. A second elastic member,
The endoscopic treatment instrument according to any one of claims 1 to 3, wherein   The endoscope treatment tool according to claim 4, wherein the second elastic member is rotatably supported with respect to the slit.   The treatment instrument for an endoscope according to any one of claims 1 to 5, wherein a plurality of the attachment mechanisms are arranged in the storage device. The removal mechanism of the endoscope treatment section is:
An attachment portion to the treatment instrument insertion portion provided at a proximal end of the distal treatment portion, and a fitted portion urged by a first elastic member so as to cover the attachment portion;
An opening that is provided in the storage device and passes through the distal treatment section attached to the treatment instrument insertion section from one direction substantially perpendicular to the longitudinal axis of the distal treatment section and can be accommodated in the storage apparatus. A slit to be moved, and the received distal treatment section to be axially biased from the distal end side so as to prevent the distal treatment section from passing through the slit, and to move the fitted portion to the first elastic member. A second elastic member that moves relative to the mounting portion against the mounting portion and exposes the mounting portion;
The treatment instrument for an endoscope according to claim 1 or 3, characterized by comprising:   The endoscopic treatment instrument according to any one of claims 1 to 7, wherein the housing device includes an endoscope attachment portion that is attached to the endoscope.   The endoscopic treatment tool according to any one of claims 1 to 8, wherein the storage device includes a hook portion that can be engaged with the other storage device.   The endoscope treatment tool according to claim 1, wherein the housing device includes a plurality of the distal treatment sections.   The endoscopic treatment tool according to claim 10, wherein the plurality of distal treatment sections are the same.   The endoscopic treatment tool according to claim 10, wherein the plurality of distal treatment sections are different from each other. A channel through which a treatment instrument insertion portion of a treatment instrument for an endoscope provided with a distal treatment section for treating a living body at the distal end; and
An insertion part to be inserted into the body,
An operation unit provided at a proximal end of the treatment instrument insertion unit;
An attachment mechanism for attaching the distal treatment section to the treatment instrument insertion section;
A removal mechanism for removing the distal treatment section mounted on the treatment instrument insertion section;
An endoscope comprising: An attachment / detachment mechanism for attaching / detaching a distal treatment section for treating a living body from the distal end of a treatment instrument insertion section of the treatment instrument for endoscope inserted through the channel of the endoscope;
The attachment / detachment mechanism is housed in the housing groove for housing the treatment instrument insertion portion, a slit that allows the distal treatment portion to pass in one direction substantially perpendicular to the longitudinal axis, and the housing groove. And a second elastic member for urging the distal treatment section in the axial direction from the distal end side and shifting the distal treatment section in the axial direction so that the distal treatment section cannot pass through the slit.

Images