JPH0741445Y2 - Endoscope brush - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a brush for an endoscope that slides in a tube.

[Conventional technology]

Generally, brushes used for endoscopes include a cell collecting brush for collecting tissues such as cells and a cleaning brush for cleaning the forceps channel of the endoscope. These endoscope brushes are shown in Japanese Utility Model Publication No. 62-87617 and Japanese Utility Model Publication No. 61-18009. For example, in the cell collection brush 1 shown in FIG. The brush body 4 is formed so as to be sandwiched between the wires 3, the wire 3 is connected to one end of another operation wire, these are inserted into the guide tube 5, and the operation portion 6 is inserted into the other end of the operation wire. It is provided.
By this operation portion 6, the brush body 4 is moved between a position projecting from the guide tube 5 and a storage position.
The tips of the brush bristles 2 of the brush body 4 are simply cut and formed, and are formed in a plane substantially perpendicular to the axial direction of the brush bristles 2, and the outer circumference is an edge.

[Problems to be solved by the invention]

In FIG. 6, the brush body 4 is housed in the guide tube 5,
When the operating portion 6 is pushed, the brush body 4 is moved to the guide tube 5
It is a figure which shows the state pushed out from. In this case, the tip edge of the brush bristles 2 bites into the inner surface of the guide tube 5, and the brush body 4 may not be able to protrude. Furthermore,
In order to collect a large amount of cells at a time, the outer diameter of the brush body 4 must be made larger, and the guide tube 5 must be made thinner when it is used by inserting it into the forceps channel of the endoscope. Moreover, the tip edge of the brush 2 is more likely to bite into the inner surface of the guide tube 5 and is less likely to stick out. The same applies to the case of a cleaning brush. For example, when the brush body 4 is moved back and forth in the conduit to clean the conduit of the endoscope, the edge of the brush bristles bites into the inner surface of the conduit in the same manner. I can't go back and forth.

The present invention has been made in view of the above-mentioned problems, and provides an endoscopic brush that can be smoothly slid with a small amount of operation force without the tips of brush bristles being caught in the tubular body. The purpose is to

[Means for solving problems]

The endoscope brush of the present invention has a blunt tip so that at least a part of the most advanced edge formed by the tip surface and the outer peripheral surface of the bristles does not cut into the inner surface of the tube through which the endoscope brush is inserted. The surface is formed with a bite prevention means.

[Action]

In the endoscope brush of the present invention, the biting prevention means formed as the blunt tip surface on at least a part of the most advanced edge,
When the endoscope brush is inserted into the tube and slid, the bite prevention means comes into contact with the inner surface of the tube and slides, so that the bristles of the brush do not bite.

〔Example〕

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a view showing a cell collecting brush 10. The cell collection brush 10 has many straight brush bristles.
A brush body (13) is formed by sandwiching (11) between wires (12) formed by twisting soft wires. A hemispherical tip 14 is attached to the tip of the brush body 13 with the sphere surface side facing forward. The brush body 13 is connected to one end of an operation wire 15, the other end of the operation wire 15 is formed as an operation portion 16, and these are inserted into a guide tube 17.

Further, the tips of the brush bristles 11 forming the brush body 13 are second
It is formed as shown in the figure. That is, the tip edge 20 (illustrated by a chain line) formed by the tip surface 18 and the outer peripheral surface 19 of the brush bristles 11 is cut at both sides at right angles to the advancing / retreating direction of the brush body 13 to obtain inclination angles 21 and 21. Has been formed.

This cell collecting brush 10 has a brush body as shown in FIG.
13 is retracted into the guide tube 17 and inserted into the forceps channel of the endoscope, and is protruded from the endoscope near the lesion to be collected, and the operating portion 16 is pushed in to guide the brush body 13. Cells are attached to the tips of the brush bristles 11 by protruding from the tube 17. After that, the brush body 13 is drawn into the guide tube 17 and is drawn out together with the guide tube 17 from the forceps channel.

Here, when the brush body 13 is projected from the guide tube 17, the brush bristles 11 face the pushing direction of the brush body 13, but the tip edge 20 of the brush bristles 11 is cut and formed on the inclined surfaces 21 and 21. Therefore, the guide tube 17 can be projected without being caught by the inner surface of the guide tube 17. Further, since the movement of the brush body 13 becomes smooth, the amount of operation force is reduced, and the amount of the brush bristles 11 can be increased correspondingly, and the cell collection ability can be increased.

It should be noted that in FIG.
Although 1 and 21 are formed, the inclined surfaces 21 and 21 may be formed in a blade shape without leaving the tip end surface 18.

FIG. 3 is a diagram showing a second embodiment of the present invention.
22 tips are shown. In this second embodiment, the tip edge is processed into a chamfered surface 24 with the tip surface 23 left. The brush bristles 22 are prevented from biting into the inner surface of the guide tube 17 in the same manner as in the first embodiment.

FIG. 4 shows a cleaning brush 30 which is a third embodiment of the present invention. This cleaning brush 30 has a tip in which brush bristles 31 are twisted with a metal wire 32 to form a brush body 33.
33 is a metal wire 36 formed by twisting twisted wires 34 and 15.
It is inserted into the tip of the and fixed with solder 37. A loop-shaped portion 38 is formed on the base end side, and is inserted into a pipe 39 and fixed by soldering. Here, the tips of the brush bristles 31 of the brush main body 33 are formed by the bite prevention means which is a blunt tip surface obtained by processing the tip edge as shown in FIGS.

The cleaning brush 30 is inserted into a forceps channel or the like in the endoscope to clean dirt and the like adhering to the channel. At this time, since the tips of the brush bristles 31 are formed by the bite prevention means, the brush bristles 31 do not bite into the inner surface of the forceps channel or the like and can be cleaned smoothly.

[Effect of device]

In the endoscope brush of the present invention, since the bite-preventing means is formed at the bristle ends of the brush body that constitutes the brush body, it does not get caught in the inner surface of the tube body through which the brush body is inserted and does not bite, so that a small operation is possible. It can be slid smoothly with the ability.

[Brief description of drawings]

FIG. 1 is a diagram showing a cell collecting brush showing a first embodiment of the present invention, FIG. 2 is a diagram showing brush bristles of the first embodiment, and FIG.
The figure shows the brush bristles of the second embodiment, FIG. 4 shows the cleaning brush of the third embodiment, FIG. 5 shows the conventional cell collecting brush, and FIG. 6 shows the conventional brush. It is a figure which shows a body and a guide tube. 10 …… Cell collection wire 11,22,25,31 …… Brush bristles 20 …… Tip edge 21,24,26 …… Bite prevention means

Claims (1)

[Scope of utility model registration request] 1. An endoscope brush comprising an operation wire having brush hairs fixed at its tip and a guide tube on which the operation wire is slidable, wherein the guide tube can be inserted into and removed from a channel of an endoscope. It is characterized in that at least a part of the most advanced edge formed by the tip surface of the brush bristles and the outer peripheral surface at the tip of the operation wire is formed as a blunt tip without making the diameter of the brush bristles larger than the diameter of the bristles. Brush for endoscope.