JPH0423523Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sliding tube for an endoscope that guides the insertion of a colonoscope into a body cavity, for example.

[Conventional technology]

This type of sliding tube has a flexible tube body into which the flexible tube of the endoscope is inserted, and one end of the tube body has a cylindrical tube made of the same material as the tube body. A grip is provided.

By the way, this sliding tube is often required not only when inserting an endoscope, but also only after the endoscope has been inserted to a certain extent into a body cavity.

For this reason, conventional sliding tubes
For example, as seen in ``Japanese Unexamined Patent Publication No. 56-68425,'' a continuous cut in the axial direction is provided on the circumferential surface of the tube body and the grip part, and the sliding tube is cut in the middle of insertion of the endoscope. When it becomes necessary to do so, the slits in the tube body and grip part are pushed apart with fingers, and the tube is fitted onto the outer periphery of the flexible tube.

[Problem that the invention attempts to solve]

However, according to this conventional sliding tube, the operator must hold the grip part and push out the cutout of this grip part, and this grip part is designed to be easy for the operator to grasp. Since the wall thickness is thick and the tube is formed to have a large diameter, it takes time and effort to widen the cut, and there are problems in that it becomes troublesome to attach and detach the tube to the flexible tube.

The present invention was developed based on the above circumstances, and an object of the present invention is to provide a sliding tube for an endoscope that can be easily attached to and detached from a flexible tube and is easy to grasp.

[Means for solving problems]

Therefore, in the present invention, the flexible tube body through which the flexible tube of the endoscope is inserted is provided with a cut along the axial direction along its entire length, and one end of the tube body is made of a material that is harder than the tube body. The present invention is characterized in that a grip portion made of a material is provided, and an opening through which a flexible tube can be inserted is formed on the circumferential surface of the grip portion, continuous with the above-mentioned cut.

[Effect]

According to this configuration, since the peripheral surface of the grip part is provided with a continuous opening, when fitting the sliding tube into the flexible tube, it is only necessary to widen only the cut in the flexible tube body. There is no longer any need for the tedious work of holding the handle and pushing the slits apart as in the past.

Moreover, since this grip part is harder than the tube body, it will not deform when gripped.
That makes it easier to hold.

〔Example〕

A first embodiment of the present invention will be described below with reference to FIG.

The sliding tube indicated by reference numeral 1 in the figure is
For example, it is composed of a tube body 2 made of a flexible material such as synthetic resin, and a grip portion 3 connected to one end of this tube body 2. Inside the tube body 2 is a flexible tube of an endoscope (not shown). Insertion passage 4 through which
is formed. A slit 6 is formed in the circumferential surface 5 of the tube body 2 along its entire length in the axial direction, and by pushing this slit 6 wider in the circumferential direction of the tube body 2, the inner insertion passage 4 is opened. It is becoming more and more common.

One end of the tube body 2 is expanded in the circumferential direction from the slit 6 over a certain length range, and the grip portion 3 is connected to this expanded end. The grip portion 3 includes an outer member 7 having a U-shaped cross section and made of a resin material harder than the tube body 2;
It is composed of an inner member 8 fitted inside the outer member 7, and a groove-shaped communication passage 9 that is connected to the insertion passage 4 is formed inside the grip portion 3.

Therefore, a portion of the peripheral wall of the communication passage 9 is opened over its entire length to the peripheral surface of the grip portion 3, and this opening 10 is formed in a width that allows the flexible tube to be inserted therethrough.

One end of the expanded tube body 2 is sandwiched between the outer member 7 and the inner member 8, and the cut 6 of the tube body 2
The opening 10 of the grip part 3 is continuously located on the extension line of the grip part 3.

Note that an adhesive is filled between the outer member 7 and the inner member 8, and the outer member 7, the inner member 8, and the tube body 2 are bonded at multiple locations along the circumferential direction of the grip portion 3. They are connected to each other by screws 11.

In such a configuration, when the sliding tube 1 becomes necessary after the flexible tube of the endoscope has been inserted into the body cavity to some extent, the cut 6 of the tube body 2 is pushed out in the circumferential direction and the flexible tube is inserted into the body cavity. Then, the tubes are sequentially fitted onto the outer periphery of the flexible tube. and,
Since this cut 6 is continuous with the opening 10 of the grip portion 3, the grip portion 3 is fitted onto the outer periphery of the flexible tube as it is, thereby completing the installation of the sliding tube 1.

Note that after the sliding tube 1 is attached to the flexible tube, the slit 6 is adhered with tape 12, so that there is no chance that the slit 6 will open and the flexible tube will come off while the sliding tube 1 is in use. Measures have been taken to prevent the inner wall of the body cavity from being pinched.

According to the first embodiment of the present invention, since the opening 10 through which the flexible tube can be inserted is formed in the circumferential surface of the grip portion 3 in succession to the slit 6, the sliding tube 1 can be inserted into the flexible tube. When attaching it to a tube, it is only necessary to grasp the grip part 3 and push out only the slits 6 of the flexible tube body 2.

Therefore, there is no need for any troublesome work such as pushing the grip part 3 apart while gripping it, and the work of attaching to and removing from the flexible tube can be easily performed.

Furthermore, since the grip portion 3 is made of a resin material that is harder than the tube body 2, the grip portion 3 will not be deformed when the grip portion 3 is gripped. For this reason, sliding tube 1
It has advantages such as being easier to hold in the hand when attaching and detaching the flexible tube to and from the flexible tube, contributing to improving the workability of attaching and detaching.

Note that the present invention is not limited to the first embodiment described above, but a second embodiment of the present invention is shown in FIG. 2, for example.

Sliding tube 1 of this second embodiment
is equipped with a cap 21 that covers the opening 10 of the grip portion 3, and side walls 2 that cover the outer surface of the outer member 7 on the opening 10 side are provided on both sides of the cap 21.
2 and 22 are formed. A fitting groove 23 extending along the axial direction of the grip portion 3 is formed on the inner surface of the side wall portions 22, 22, and a protrusion 24 protruding from the outer member 7 is fitted into the fitting groove 23. By doing so, the cap 21 is held by the grip portion 3 without coming off.

According to the configuration of this second embodiment, after the sliding tube 1 is fitted into the flexible tube, the grip portion 3
If the cap 21 is fitted into the opening 10 of the grip 3, the circumferential surface of the grip 3 will be continuous in the circumferential direction.
becomes easier to grip.

[Effect of idea]

According to the present invention described in detail above, when using a sliding tube, it is only necessary to push out the cutout of the tube body, so the troublesome work of expanding the grip is unnecessary, and the flexible tube can be expanded accordingly. Easy to attach and detach.

In addition, since the grip part is harder than the tube body, the grip part does not deform when gripped, making it easier to hold the sliding tube in the hand, which has the advantage of improving workability when attaching and detaching. .

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention, and FIG. 2 is a perspective view showing a second embodiment of the present invention. 1...Sliding tube, 2...Tube body, 3...Grip part, 6...Cut, 10...
…Aperture.

Claims (1)

[Scope of utility model registration request] A flexible tube body through which the flexible tube of the endoscope is inserted is provided with a cut along its entire length in the axial direction, and a grip portion made of a harder material than the tube body is provided at one end of the tube body. In addition, a sliding tube for an endoscope, characterized in that an opening through which a flexible tube can be inserted is formed on the circumferential surface of the grip portion, continuous with the above-mentioned cut.