JP3222741B2 - Cytology brush connector with cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for inserting a cytodiagnosis brush with a cover through a forceps opening of an endoscope.

[0002]

2. Description of the Related Art Conventionally, a cytodiagnosis brush with a cover of this type has an operating member made of a wire or the like having a brush bristle protruding at the tip thereof, and a flexible tube at the tip. The brush is inserted into the mantle tube so as to be able to advance and retreat, and the brush bristles are inserted into and taken out of the end of the mantle tube. Then, the cytodiagnosis brush with the cover is inserted into a forceps channel formed in the endoscope, and is inserted into a body cavity together with the endoscope,
After the mucous membrane in the body cavity is rubbed by the brush bristles, the mucous membrane is drawn into the mantle tube by storing the brush bristles in the mantle tube, and then the mantle tube and the operating member are pulled out from the endoscope to thereby remove the cells. Collection is performed.

In such a conventional cytodiagnosis brush with a cover, the inner diameter of the mantle tube is formed sufficiently larger than the outer diameter of the operation member so that more cells can be collected by the brush bristles. A large gap is formed between them. Therefore, the operation member is eccentric so as to contact one side of the inner wall of the mantle tube due to gravity, wire crimping, twisting of the operation member, and the like. There is a problem that the end portion is caught on the distal end portion of the mantle tube, and the storage resistance of the operation member is increased. Further, when the brush bristles are stored in the mantle tube in such a state that the brush bristles are eccentric, there is also a disadvantage that the brush bristles are squeezed at the tip of the mantle tube, and the collected cells fall off and the collection amount is reduced. Was.

Accordingly, the present applicant has filed Japanese Patent Application No. 7-1109.
In No. 94, when storing the bristle in the mantle tube,
At the tip of the outer tube, to prevent the bristle from catching on the outer tube, and to reduce the storage resistance of the bristle,
There is provided a cytodiagnosis brush with a cover provided with a plurality of opening / closing pieces divided in a circumferential direction so as to be able to expand and contract a distal end portion of a mantle tube. According to the earlier application, when the brush bristles are pulled into the mantle tube, the opening / closing piece opens, so that the brush bristles to which the cells are attached are smoothly stored in the mantle tube without being squeezed, and a large amount Cells can be collected.

[0005]

However, since a plurality of opening / closing pieces are formed at the tip of the mantle tube, the tip of the mantle tube is attached to the endoscope with this cover-mounted cytodiagnosis brush. There has been a problem that the opening / closing piece is easily bent or turned up due to contact with the forceps port, and the efficiency of the operation of inserting the mantle tube into the forceps port cannot be increased. The present invention has been devised in view of the above circumstances, and an object of the present invention is to easily insert a mantle tube into a forceps port even when the tip of the mantle tube is configured to be expandable and contractible. It is an object of the present invention to provide a connection device for a cytodiagnosis brush with a cover.

[0006]

In order to achieve the above object, the present invention provides an operating member having a brush bristles protruding at a tip end thereof, and an outer tube through which the operating member is inserted to be able to advance and retreat. Wherein the distal end portion of the mantle tube is constituted by a plurality of opening / closing pieces divided in a circumferential direction, and is used by being inserted into a channel from a forceps opening of an endoscope body and used in a cytodiagnosis brush with a cover. A connection tool is provided detachably on the mouth, the connection tool is formed with an insertion portion having an inner diameter corresponding to the outer diameter of the mantle tube, and is formed coaxially with the insertion portion,
A storage portion that faces the channel side in a state attached to the forceps port and stores a distal end portion of an outer tube, wherein the storage portion is formed with a length corresponding to the opening and closing piece, and the storage portion has A brush bristle storing part for storing the brush bristle is formed on the channel side, and the brush bristle storing part is formed in a cylindrical hole shape with a radius larger than a protruding length of the brush bristle.

Further, the present invention is characterized in that the insertion portion is in contact with the outer tube with a degree of friction that allows the movement of the outer tube. Further, the present invention is characterized in that the insertion portion is in airtight contact with an outer tube so that air cannot move between the insertion portion and the storage portion. Further, according to the present invention, the connecting device is formed of a material having elasticity,
The insertion portion is formed to have an inner diameter smaller than the outer diameter of the mantle tube. Further, the present invention is characterized in that the connector is formed of a material having elasticity, and the insertion portion is compressed to an inner diameter smaller than the outer diameter of the mantle tube in a state where the connector is attached to the forceps port. And

Further, the present invention is characterized in that the storage portion has an inner diameter slightly larger than an outer diameter of a distal end portion of the outer tube. Further, the present invention is characterized in that the bristles protrude from the operating member with a dimension larger than the radius of the mantle tube. Further, the present invention provides the connection device,
A screw portion to be screwed to the screw portion of the forceps port is formed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an endoscope, and FIG.
Shows a cross-sectional view of the connecting part. In FIG. 1, reference numeral 2 denotes a cytology brush with a cover, and the cytology brush 2 with a cover.
The operation member 6 includes an operation member 6 having a brush bristles 4 for cell collection protruding at a distal end portion thereof, and an outer tube 8 having the operation member 6 inserted therein and having at least a distal end portion formed of a flexible tube. The brush bristles 4 are inserted and removed from the distal end of the mantle tube 8 by operating the member 6.

In FIG. 1, reference numeral 10 denotes an endoscope. An eyepiece 1010, an air / water button 1012, a suction button 1014, and a bending operation knob 101 are provided on a main body 1002 of the endoscope 10.
6, a light guide insertion tube 1018, a forceps port 12, and the like are provided. Further, a flexible tube 13 in which a light guide and an image guide are embedded is extended from the main body 1002, and the flexible tube 13 is operated by operating a bending operation knob 1016. 13 tip 13A
Bends. The connector 18 is detachably connected to the forceps port 12.
Is attached, and the cytodiagnosis brush 2 with the cover is connected to the connection tool 1.
8 to the channel 13 of the flexible tube 13 from the forceps port 12
The flexible tube 13 is inserted into and removed from the distal end portion 13A of the flexible tube 13.

As the operating member 6, for example, a flexible wire formed by twisting a plurality of fine stainless steel wires is used. The brush bristles 4 are provided integrally at the tip of the operating member in a spiral shape. The brush bristles 4
Is formed to have a dimension larger than the radius of the mantle tube 8 as shown in FIG.

The outer tube 8 is formed of a flexible tube such as a fluororesin tube. A plurality of slits 14A having a predetermined length from the distal end are formed in the distal end portion of the outer tube 8 at intervals in the circumferential direction, and a plurality of opening / closing pieces 14B are formed by the plurality of slits 14A. As a result, the distal end portion of the outer tube 8 is released in a hat-shape by contact with the brush bristles 4 and is configured as an expanding / contracting portion 16 which is restored by elasticity.

The connecting member 18 is made of a material having some elasticity. The distal end portion of the connection tool 18 is formed with a tapered tapered surface 1802, and is formed to have such a size as to uniformly contact the tapered surface of the forceps port 12 when inserted into the forceps port 12. In addition, connection tool 1
The base end of 8 is formed in a large-diameter portion 1804, and the large-diameter portion 1804 serves as a grip when the connecting tool 18 is inserted into the forceps port 12. Further, the tapered surface 1802 of the connection tool 18
A small diameter portion 1805 having a uniform diameter is formed between the rear end of the small diameter portion 1804 and the front end of the large diameter portion 1804.
805 is inserted into the forceps port 12, and with the large diameter portion 1804 in contact with the end face of the forceps port 12, the fitting 18 is detachable from the forceps port 12 by fitting the small diameter section 1805 and the forceps port 12. Fixed.

The inner surface of the large diameter portion 1804 has a tapered guide surface 18 whose diameter gradually decreases from the base end surface to the distal end.
06, an insertion portion 1808 having a uniform inner diameter from the minimum diameter portion of the guide surface 1806 is formed with a predetermined size toward the tip. The insertion portion 1808 has an inner diameter slightly smaller than the outer diameter of the outer tube 8. The inner surface of the insertion portion 1808 and the outer surface of the outer tube 8 move the outer tube 8 when the outer tube 8 is inserted. With a degree of friction that can be tolerated, in other words, with a degree of friction that does not cause the outer tube 8 to move due to its own weight, and also maintains an airtightness such that air cannot move between the inner surface of the insertion portion 1808 and the outer surface of the outer tube 8. And the sampling operation of the mucous membrane 20 is performed smoothly without any trouble. In addition, such a mantle tube 8
For example, as shown in FIG. 3, the insertion portion 1808 is formed in an elliptical shape, and the mantle tube 8 is contacted with the insertion portion 1808.
May be deformed into an elliptical shape corresponding to the insertion portion 1808.

In front of the insertion portion 1808, the insertion portion 1
The storage section 1810 is formed in communication with the storage section 1808.
A brush bristle storing portion 1812 communicating with the storing portion 1810 and opening forward is formed in front of 810. The storage portion 1810 is formed with a size slightly larger than the outer diameter of the mantle tube 8. Also, the storage unit 1810
Is longer than the opening / closing piece 14B at the tip of the outer tube 8.

The brush bristle storing portion 1812 has an inner diameter larger than that of the brush bristle 4. Further, the length of the brush bristle storing portion 1812 is formed to be longer than the length of the brush bristle 4.

Next, a method of using the connection tool 18 will be described. As shown in FIG. 2, the operating member 6 is inserted into the mantle tube 8 so that the brush bristles 4 protrude from the tip of the mantle tube 8. It is assumed that the expansion / contraction section 16 of the tube 8 is stored in the storage section 1810 and the brush bristles 4 are stored in the brush bristle storage section 1812. In this case, the outer tube 8 can be inserted into the connection tool 18 by inserting the rear end of the outer tube 8 from the brush bristle storing portion 1812, so that the tip of the opening / closing piece 14B does not contact anywhere.
Therefore, the operation of inserting the mantle tube 8 into the connecting member 18 is easily performed without the opening / closing piece 14B being bent or turned. That is, the work of inserting the cytodiagnosis brush 2 with the cover into the connection tool 18 is easily performed.

Next, the expanding / contracting portion 16 of the mantle tube 8 is stored in the storage portion 18.
10, when the brush bristles 4 are stored in the brush bristle storing portion 1812, the connecting tool 18 is kept facing the forceps port 12 of the endoscope 10 while maintaining this state, and the tapered surface 1802 and the small diameter portion 1805 are connected. It is inserted into the forceps port 12 and the large diameter portion 1804 is inserted.
Is brought into contact with the end face of the forceps port 12, and the connector 18 is connected to the forceps port 1.
Fix to 2. Thereby, the connecting device 18, the mantle tube 8,
The operation member 6 is held coaxially with the forceps port 12.

Next, after inserting the flexible tube 13 into a desired position in the body cavity, the covered cytodiagnosis brush 2 is pushed into the channel 1302 of the flexible tube 13 as a whole. The distal end portion protrudes from the distal end portion 13A of the flexible tube 13. Then, the brush bristles 4 are protruded from the distal end of the mantle tube 8 and pressed against the mucous membrane 20 in the body cavity, as shown in FIG. 4, and then the operation member 6 is moved in the axial direction. 4 and scraped. Here, some of the rubbed cells enter the gaps of the brush bristles 4 and some adhere to the surfaces of the brush bristles 4 so as to swell.

Then, when the operating member 6 is moved so as to be pulled up, the brush bristles 4 are drawn toward the distal end of the mantle tube 8, and as shown in FIG. Then, the brush bristles 4 are drawn into the expanding / contracting portion 16 and the cells are stored in the mantle tube 8. Next, when the brush bristles 4 are stored in the expansion / contraction section 16, the operating member 6 and the mantle tube 8 are pulled in this state, and as shown in FIG.
By moving the inside of the channel of the flexible tube 13, as shown in FIG. 7, the expanding / contracting portion 16 in which the bristles 4 are stored is positioned in the bristles storage portion 1812. At this time, the brush bristles 4 and the expanding / contracting section 16 are slightly reduced in diameter by the brush bristle storing section 1812. Next, by removing the connecting tool 18, the cytodiagnosis brush 2 with cover is removed from the forceps port 12, and cells attached to the brush bristles 4 are collected. Therefore, according to the present embodiment, the mantle tube 8 having the opening / closing piece 14B can be easily inserted into the forceps port 12, and the cytodiagnosis brush 2 with the cover can be placed inside while minimizing the diameter reduction of the expansion / contraction section 16. It can be removed from the endoscope 10 and is extremely advantageous in collecting many cells.

Next, a second embodiment will be described with reference to FIG. FIG. 8 shows a cross-sectional view of the connector according to the second embodiment. In the second embodiment, the large diameter portion 1804 and the brush bristle storing portion 1812 are omitted from the first embodiment. That is, the outer surface of the connector 30 is formed by a tapered surface 3802 having a tapered tip, and the remaining portion is formed by a small-diameter portion 3805 having a uniform diameter.
An insertion portion 3808 and a storage portion 3810 are formed on the inner surface of the. Since the outer diameter of the connecting device 30 of the second embodiment is formed to be thin overall, the forceps port 1 of the endoscope 10 is used.
It is suitable for the case where the diameter of 2 is small. In the second embodiment, the portion of the mantle tube 8 located outside the insertion portion 3808 is inserted into the forceps port 12, so that the hole diameter of the forceps port 12 is formed smaller than that of the mantle tube 8, so that the insertion is performed. Part 3808
Can be deformed inward to set the same dimensions as in the first embodiment.

Next, a third embodiment will be described.
FIG. 9 shows a cross-sectional view of the connecting device according to the third embodiment. In the third embodiment, a screw connection is used when attaching the connecting tool 40 to the forceps port 12. That is, a cap nut-shaped screw portion 42 is formed on the outer periphery of the base end portion of the connection tool 40, and the screw portion 42 is screwed to a screw portion 1242 formed on the outer periphery of the forceps port 12, whereby the connection is established. The tool 40 is fixed to the forceps port 12. In the third embodiment, the brush bristles 4 to which cells are attached
In order to reduce the amount of deformation of the brush bristles 4 and the expanding / contracting portion 16 when storing the cells in the enlarging / contracting portion 16 of the mantle tube 8 and to further suppress the falling off of collected cells, the mantle tube 8
A large-diameter portion 8040 having an outer diameter larger than that of the other portion is formed with a length in which the brush bristles 4 are stored.
40, a plurality of open / close pieces 804 through a slit 8042A.
2B are formed to form an enlargement / reduction portion 8044.

Then, corresponding to the expansion / contraction section 8044, the insertion section 3848 and the storage section 3
850 is formed, and the inner diameter of the storage portion 3850 is formed to be slightly larger than the outer diameter of the expansion / contraction portion 8040.

[0024]

As described above, according to the present invention, even a mantle tube having an opening / closing piece at the tip can be easily inserted into the forceps port, and a large amount of cells can be collected at one time.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an endoscope equipped with a connection device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a connecting part.

FIG. 3 is an explanatory diagram of a modified example of the insertion portion.

FIG. 4 is an explanatory diagram of cell collection using brush hairs.

FIG. 5 is an explanatory diagram of a state in which brush bristles are stored in a mantle tube.

FIG. 6 is an explanatory diagram when the cytodiagnosis brush with a cover is moved in a channel.

FIG. 7 is an explanatory view showing a state in which the cytodiagnosis brush with a cover is housed in a connection tool.

FIG. 8 is a cross-sectional view of a connector according to a second embodiment of the present invention.

FIG. 9 is a cross-sectional view of a connector according to a third embodiment of the present invention.

[Explanation of symbols]

 2 cytodiagnosis brush with cover 4 brush bristles 6 operating member 8 mantle tube 10 endoscope 12 forceps port 1242 screw part 18, 30, 40 connector 42 screw part 1302 channel 1808, 3808, 3848 insertion part 1810, 3810, 3850 Unit 1812 brush hair storage unit

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A61B 10/00 103 A61B 1/00 334

Claims (8)

(57) [Claims] 1. An operating member having a brush hair for cell collection protruding at a distal end portion thereof, and an outer tube through which the operating member is inserted so as to be able to advance and retreat , the distal end portion of the outer tube being divided in a circumferential direction.
In the cytodiagnosis brush with a cover, which is constituted by a plurality of opened and closed pieces and is used by being inserted into the channel from the forceps port of the endoscope body, a connecting tool is provided detachably on the forceps port. An insertion portion formed with an inner diameter corresponding to the outer diameter of the outer tube, and a distal end portion of the outer tube which is formed coaxially with the insertion portion and faces the channel side in a state attached to the forceps port. possess a housing part for the housing portion is formed with a length corresponding to the opening piece, the said channel side of the housing unit, rank the bristles
A bristle storing portion for storing the bristle, wherein the bristle storing portion is longer than a protruding length of the brush bristle.
A connection device for a cytodiagnosis brush with a cover, wherein the connection device is formed in a cylindrical hole shape with a large radius . 2. The connecting device for a cytodiagnosis brush with a cover according to claim 1, wherein the insertion portion is in contact with the mantle tube with a degree of friction that allows the movement of the mantle tube. 3. The connecting device for a cytodiagnosis brush with a cover according to claim 1, wherein the insertion portion is in airtight contact with an outer tube so that air cannot move between the storage portion and the insertion portion. 4. The connection device for a cytodiagnosis brush with a cover according to claim 1, wherein the connection device is formed of a material having elasticity, and the insertion portion has an inner diameter smaller than an outer diameter of the mantle tube. 5. The connecting member is formed of an elastic material, and the insertion portion is compressed to an inner diameter smaller than an outer diameter of the mantle tube with the connecting member attached to the forceps port. Cytology brush connector with a cover. 6. The storage device according to claim 1, wherein the storage portion has an inner diameter slightly larger than an outer diameter of a distal end portion of the mantle tube.
The connection tool for a cytodiagnosis brush with a cover according to any one of 3, 4, and 5. 7. The brush bristle is moved from an operating member to a half of a mantle tube.
7. The projection according to claim 1, wherein the projection is larger than the diameter.
A connector for a cytodiagnosis brush with a cover according to any one of the preceding claims. 8. The connecting tool has a threaded portion of the forceps port.
8. What is claimed in claim 1, wherein a screw portion to be screwed is formed.
A connection tool for a cytodiagnosis brush with a cover according to claim 1 .