JPS58200735A - Cell diagnostic brush for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscopic cytology brush, and more particularly, an endoscope cytology brush for scraping and collecting tissue cells introduced into a living body cavity through a channel for inserting a treatment tool in an endoscope. Regarding the cytology brush for speculum.

As is well known, the endoscopic cytodiagnosis brush is inserted into the treatment instrument insertion channel of the endoscope and assembled by rubbing the brush part provided at the tip of the operating wire against the inner wall of the body cavity. It is a type of endoscopic treatment tool that collects fiber cells by scraping.

Conventional cytodiagnosis brushes for this type of endoscope, for example,
It was configured as shown in the figure. That is, in the conventional endoscopic cytodiagnosis brush 1, bristles 3 are attached to the front half of a relatively short brush attachment wire 2 formed by twisting two elastic wires together when the wire 2 is twisted. A plan part 4 is formed in the same part by pinching, and the rear part of the brush attachment wire 2 formed with this brush part 4 is attached to the tip of the operating wire 5 made of an elastic wire formed into a spiral shape. The main part is constructed by screwing in the brush attachment wire 2 and integrating it with the operating wire 5.

A round head fitting 6 is attached to the tip of the brush portion 4 to prevent damage to the inner wall of the body cavity. When integrating the brush attachment wire 2 and the operating wire 5,
Since the distance between the peaks of the two elastic wires formed by twisting the brush attachment wire 2, that is, the pitch, corresponds to the pitch of the spiral shape of the operating wire 5, the brush attachment wire 2 By twisting the wire 2, the twisted mountain of the wire 2 becomes the operating wire 5.
The wire 2 is fixed to the operating wire 5 by biting into the spiral valley.

Further, as shown in FIG. 2, another conventional endoscopic cytodiagnosis brush 7 has ends 2a of two elastic wires at the rear end of the brush attachment wire 2.

2b toward the outside, and insert the ends 2a and 2b between the helical elastic wires from the tip of the operating wire 5, and then twist the brush attachment wire 2 into the operating wire 5. It was configured in a fixed manner.

However, as mentioned above, the brush mounting wire 2
The cytodiagnosis brushes 1 and 7 for an endoscope, which are integrated into the operating wire 5 by twisting, are used for inserting a treatment instrument into an endoscope, for example, as shown in FIG. When inserting the channel 8, a torsional movement may be applied to the brush portion 4 to rotate the brush portion in the direction of the arrow A shown in the figure, or as shown in FIG. When collecting fiber cells, in order to efficiently entangle the cells with the bristles 3 of the brush portion 4, if a rotational movement in the direction shown by arrow B is applied other than the back and forth movement along the axial direction, at this time, When the rotational direction of the cytodiagnosis brushes 1 and 7 is opposite to the twisting direction of the two elastic wires of the brush attachment wire 2, the brush wire 2 comes off the front end of the operating wire 50 and enters the living body cavity. There was a danger of it falling off.

In view of the above-mentioned conventional drawbacks, an object of the present invention is to bend the tip of an elastic wire to form a closed-loop brush holder that can be opened and closed, and to attach and detach a brush member made of radially flocked hair to this brush holder. To provide a cytodiagnosis brush for an endoscope which can be freely attached.

Hereinafter, the present invention will be explained with reference to illustrated embodiments.

FIG. 5 is a front view of an endoscopic cytodiagnosis brush showing an embodiment of the present invention. This endoscopic cytodiagnosis brush 11 is
It is composed of one flexible operating wire 12 and a brush member 14 detachably attached to a brush holder 13 formed at the tip of the operating wire 12.

As shown in FIG. 6, the operating wire 12 is made by bending a single straight flexible elastic wire at right angles at four points at its tip, so that the most straight line part 12a is bent to the original main line. The straight portion 12b is brought into contact with the portion 12e.

12c and 12d form a rectangular closed-loop brush holder 13, the other parts are kept straight, and the rear end of the main straight part 12e is the operating part on the hand side. It is 12f.

As shown in FIG. 7(A), the brush member 14 is made by radially aligning and polymerizing the bristles 15 forming the brush member 14 to form a short cylindrical shape as a whole, as shown in FIG. 7(B).
As shown in the figure, only the center portion is fixed with adhesive to form a bearing portion 16, and a circular bearing hole 16a is bored in this bearing portion 16. Note that the brush member 14 has bristles 15
When the bearing part 16 is made of a thermoplastic resin such as nylon resin, the bearing part 16 may be formed by heat fusion without using an adhesive, and the bearing hole 16a may be bored therein.

The brush member 14 manufactured in this way is
After the bristles 15 are cut to have predetermined dimensions and shaped into a short cylindrical shape, they are attached to the brush holder 13 at the tip of the operating wire 12. When attaching the brush member 14 to the brush holder 13, as shown in FIG.
2a against the spring behavior of the brush holder 13 in the direction of arrow C to separate it from the main straight part 12e of the operating wire 2. In this state, the tip of the straight part 12a is connected to the bearing of the brush member 14. Insert this brush part 14 into each straight part r2a of the brush holder 13 by inserting it into the hole 16a.
.

12b and 12c are moved and positioned on the straight portion 12d.

After this, the most advanced straight section 12a is replaced with the main straight section 12e.
As shown in FIG.
It is in a state where it is rotatably held by the straight part 12d for the supporting shaft with d as the supporting shaft.

Next, the endoscopic cytology brush 1 configured as described above will be described.
The effect of No. 1 will be explained.

First, as in the conventional case, the cytodiagnosis brush 11 is inserted into the treatment instrument insertion channel 8 of the endoscope (see Fig. 3), and the brush member 14 is made to protrude from the distal end of the endoscope. As shown in FIG. 9, the brush member 14 is attached to the inner wall 9 of the body cavity.
Press it against the Next, connect the operating wire 12 to the same wire 12.
When the brush member 14 is moved back and forth in the longitudinal direction, the bristles 15 move the inner wall of the body cavity 9
Rotate while rubbing. Therefore, the tissue forming the inner wall 9 of the body cavity is caught on the tip of the hair 15, and the tissue cells are entangled with the hair 15. Therefore, by moving the operating wire 2 back and forth greatly, a fire is placed around the entire circumference of the brush member 14, and a large number of tissue cells are scraped and collected.At this time, the brush holder 13 maintains a rectangular closed loop shape. and
Since the brush member 14 is reliably supported by the support shaft straight portion 12d, it will not fall off from the plan boulder 13.

FIG. 10 is a cross-sectional side view of a bearing portion of a brush holder of a cytodiagnosis brush for an endoscope showing another embodiment of the present invention. This cytodiagnosis brush 17 has a bearing hole 16b having a polygonal shape such as a square formed in the bearing portion 16 of the brush member 14A, and a brush for penetrating the bearing hole 16b to support the brush member 14A. Holder 13A
The cross-sectional shape of the straight portion 12do for the support shaft corresponds to the bearing hole 16b.
It is formed into a polygonal shape to match the shape of the

Regarding the operation of the endoscopic cytodiagnosis brush 17 configured as described above, the cytodiagnosis brush 17 is inserted into the body cavity through the treatment instrument insertion channel 8 of the endoscope (see Fig. 3). When the brush member 14A is brought into pressure contact with the body cavity inner wall 9 and the operating wire 12 is moved back and forth, this brush member 14A
Since the brush member 14A is not rotatable with respect to the linear support shaft portion 12do, the brush member 14A rubs against the inner wall 9 of the body cavity without rotating. Therefore, even if the back and forth movement of the operating wire 12 is not so large, the bristles 15 of the brush member 14A
The tip of the brush member 14A strongly scrapes the tissue cells on the inner wall 9 of the body cavity, and many cells become attached to the bristles 15 of this brush member 14A.

Nao, the brush member 14 cuts the circumference of the bristles 15 so that the length of the bristles is constant and shapes them into a short cylindrical shape.
By cutting and shaping, for example, an elliptical columnar brush member 14B shown in FIG. 1I, a triangular columnar brush member 14C shown in FIG. 12, and a hexagonal columnar brush member 14D shown in FIG. It can be used similarly to brush member 14.14A.

These brush members 14B, 14C, and 14D have an advantage over the circular brush members 14.14A in that the protruding portions can catch tissue cells better.

In addition, other brush members include, for example, the 14th brush member.
As shown in Figure (A), one end of the bristles 15 arranged in parallel is held and fixed by a flang member 18 made of a thin metal plate or plastic plate bent so as to have a U-shaped cross section. As shown in FIG. 14(B), the brush member 14E may be formed by bending the clamp member 18 into a circular shape. clamp part,
By bending the material 18 into a circular shape and joining the ends thereof, the clamp member 18 becomes a bearing portion 18A having a bearing hole 18a at the center, and the bristles 15 are arranged radially around the bearing portion 18A. Furthermore, as shown in Figure 15,
A short cylindrical bearing member 1 with a bearing hole 19a drilled in the center
The brush member 14F' may be formed by planting, adhering, or melting the bristles 15 on the outer peripheral surface of the brush member 9. The material of this bearing member 19 is, of course, plastic.

Any material such as wood can be used.

The shape of the closed-loop brush boulder formed at the tip of the operating wire 12 includes the rectangular seven-ribbon holder 13 shown in FIG. 6, as well as the triangular brush boulder 13B shown in FIG. 16.

It can be of any shape, such as the circular brush holder 13C shown in FIG. 17. Each of these brush holders 13B and 13C has a straight portion 12 at its tip.
a, 12a2 as main straight portions 12e, 12, respectively.
e2 to form a closed loop. Therefore, the distance between the straight line 112a and the main straight part 12e, and between the straight part 12a2 and the main straight part 12e2 are as shown in FIG. By expanding the brush holders 13B and 13C in the same manner as above, it is possible to easily attach and detach brush members of various shapes to and from these brush holders 13B and 13C, and the deformed brush holders 13B and 13C can be returned to their original closed-loop shape by spring action or external force. By restoring the brush members to the brush holders 13B and 13C, the brush members attached to these brush holders 13B and 13C will not fall off from the brush holders during use.

As described above, according to the present invention, a single wire is bent to form a closed loop brush holder at its tip,
This brush holder holds the brush member, so even if the wire is moved in various directions,
There is no risk of the brush member falling off as in the conventional case. In addition, since the closed loop of the brush holder can be opened and closed, the brush member is detachable, and the old brush member can be easily replaced with a new one, or brush members of various shapes can be easily replaced, resulting in an inexpensive configuration. can do

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing an example of a conventional cytodiagnosis brush for an endoscope; FIG. 2 is a sectional view of a main part showing another example of a conventional cytodiagnosis brush for an endoscope; Figure 3 is a sectional view of the main part of the cytology brush shown in Figure 1 above when inserted into the treatment instrument insertion channel, and Figure 4 is a main part of the cytology brush shown in Figure 2 above when in use. 5 is a front view of a cytodiagnosis brush for an endoscope showing an embodiment of the present invention, and FIG. 6 is a diagram of the operating wire before the brush member of the cytodiagnosis brush shown in FIG. 5 is attached. Front view, Figure 7 (A)
, (B) is a perspective view sequentially showing the manufacturing process of the brush member of the cytodiagnosis brush shown in FIG. 5 above, and FIG. 8 is a front view of the cytodiagnosis brush shown in FIG. , FIG. 9 is a side view of the cytology brush shown in FIG. 5 when in use, FIG. 10 is a side view of the endoscope cytology brush showing another embodiment of the present invention when in use, 11 to 13 are perspective views showing examples of shaping of other brush members used in the endoscopic cytodiagnosis brush of the present invention. FIG. 15 is a perspective view and a front view sequentially showing the manufacturing process of yet another brush member used in the endoscopic cytodiagnosis brush of the present invention, and FIG. 16 and 17 are perspective views showing the manufacturing process of another brush member, and FIGS. 1.7.II, 17...Cytology brush for endoscope 3.15...Bristles 5.12... Operation wire (wire) 13.13A to 13C...Brush holder i4.1
4A to 14F...Brush members 16a, 16b, 18a
...Bearing hole 4, 5 wards, 6 wards, horse 7 prisoners (A), 7 wards (8), 11 %, %12, 13 wards

Claims (1)

[Claims] (]) A closed-loop brush holder formed by bending the tip of a wire, having a bearing hole in the center for passing the wire of the brush holder, and bristles radiating around the periphery. A cytodiagnosis brush for an endoscope, characterized in that a brush member is detachably attached to the brush holder. (2) The cytodiagnosis brush for an endoscope according to item 1 of the scope of Patent No. 4M, characterized in that the cross-sectional shape of the wire of the brush holder and the shape of the bearing hole of the brush member are polygonal.