JPS5915608Y2 - Endoscope treatment instrument guide tube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscopic treatment instrument guide tube used when introducing a treatment instrument into a body cavity using an endoscope.

When performing cholangiography, an endoscope is inserted into the duodenum through the mouth, a contrast medium injection tube is protruded from the distal opening of the channel through the channel of the endoscope, and the contrast medium is injected by raising the endoscope. An injection tube was inserted into the bile duct from the duodenal papilla, and a contrast medium was injected.

However, since the contrast medium injection tube inserted into the bile duct is inserted through a channel of the endoscope, the endoscope, including the channel, must be thoroughly cleaned and disinfected at all times.

Therefore, the endoscope is easily damaged.

Furthermore, when an endoscope is introduced into a body cavity, the channel that is always open at the distal end becomes contaminated with dirt and germs from the esophagus and stomach, so the contrast medium injection tube inserted through that channel is also inevitably contaminated. will be done.

If a contrast agent injection tube contaminated in this manner is inserted into the bile duct, there is a risk that the bile duct may become inflamed.

On the other hand, there is a known method to prevent inflammation by mixing antibiotics into the contrast medium even if the contrast medium injection tube becomes contaminated, but this method involves injecting the antibiotic into the bile duct. This is not a desirable method because of side effects.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to prevent sterilized treatment instruments from becoming contaminated when they are introduced into a body cavity through the channel of an endoscope. An object of the present invention is to provide an endoscopic treatment instrument guide tube that can prevent the above problems.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an endoscopic treatment instrument guide tube showing an embodiment of the present invention.

In the figure, 1 is a channel (not shown) of an endoscope A, which will be described later.

) is a tube body for guiding a treatment instrument that can be inserted into the body, into which a treatment instrument such as a contrast medium injection tube B is inserted and guided.

Further, the tube body 1 is formed of a flexible tube.

Furthermore, a cap 2 is removably attached to the tip of the tube body 1.

That is, the cap 2 is made of a cylindrical body with a closed end 3 having a hemispherical shape, and its open end 4 is press-fitted into the outer periphery 5 of the tip end of the tube body 1.

Further, the outer periphery 5 of the distal end portion of the fitting tube body 1 is formed in a tapered shape, and the inner surface 6 of the open end portion 4 of the cap 2 is also formed in a tapered shape.

That is, the cap 2 is press-fitted to the outer periphery 5 of the tip end of the tube body 1, and is engaged by the frictional force therebetween, and is detachably attached, and the cap 2 is attached by pressing from the proximal side of the tube body 1. For example, it can be detached from the tube body 1 by applying pressure.

On the other hand, a substantially cylindrical mouthpiece 9 for mounting a syringe 8 is fixedly attached to the proximal end 7 of the tube body 1 .

Then, the syringe 8 is fitted into the cap 9, and the tube body 1 is
It allows clean air and liquid to be injected inside.

Therefore, by using this syringe 8, the tube body 1
The cap 2 can be removed by performing an operation to increase the pressure inside the tube body 1 from the proximal side, that is, a pressing operation.

Next, a case will be described in which the contrast medium injection tube B is introduced into the bile duct C using the endoscopic treatment instrument guide tube of the above embodiment.

First, the distal end of the endoscope A is guided through the mouth, through the esophagus, and into the stomach to the vicinity of the duodenal papilla E as shown in FIG.

Next, the tube main body 1 is inserted into the channel of the endoscope A, and the distal end portion is led out into the body cavity.

As shown in FIG. 2, a lifting mechanism (not shown) for the endoscope A is provided.

), the syringe 8 is attached to the base 9 on the proximal side, and clean air or liquid is forced into the tube body 1.

As a result, the pressure inside the tube body 1 increases, and when it reaches a certain level or higher, the cap 2 comes off and the tip side opens.

Since the cap 2 is extremely small, it is guided into the lower gastrointestinal tract over time after it is detached, and is either excreted from the body or digested before that.

Then, the syringe 8 is removed, a clean contrast agent injection tube B is inserted through the mouthpiece 9, the tip of the contrast agent injection tube B is protruded from the tip of the tube body 1, and the contrast agent injection tube B is guided to the target site.

In other words, as shown in Figure 3, from the duodenal papilla E to the bile duct C
The contrast medium is then inserted into the bile duct C through the contrast medium injection tube B.

In the above embodiment, air or liquid is injected into the tube body 1 using the syringe 8, and the pressure is used to cause the cap 2 to come off. However, the pressing operation for making the cap 2 come off is limited to this. First, for example, the cap 2 may be directly pushed out with the tip of the contrast medium injection tube B.

Furthermore, the means for engaging and attaching the cap 2 to the tip end of the tube body 1 may be any of the configurations shown in FIGS. 4 to 7.

That is, FIG. 4 shows an annular protrusion 10 on the outer periphery of the tube body 1.
, which is engaged with an annular groove 12 provided on the inner surface 11 of the cap 2.

Further, in FIG. 5, a protrusion 13 is provided on the cap 2 side, and a groove 14 is provided on the load body 1 side.

FIG. 6 shows the cap 2 firmly press-fitted into the tube body 1.

In FIG. 7, a cap 2 is fitted onto the inner diameter portion of the tube body 1. According to this, the outer diameter of the cap 2 can be reduced.

As explained above, the treatment instrument guide tube of the present invention has a cap attached to its tip, and this cap can be removed after the treatment instrument guide tube is inserted into the channel of the endoscope.

Since the treatment instrument is introduced into the body cavity through this instrument guide tube, unlike conventional instruments that are inserted directly into the channel of the endoscope, even if the inside of that channel is contaminated,
The treatment instrument can be introduced into the body cavity without contaminating it.

Therefore, even when a treatment tool such as a contrast agent injection tube is inserted into the bile duct from the duodenal papilla and a contrast agent is injected, the treatment tool does not cause contamination or infection.

Of course, since there is no need to use antibiotics to prevent infection, there is no need to worry about side effects.

Furthermore, since there is no particular need to disinfect the inside of the channel of the endoscope, it is possible to alleviate the trouble of disinfection and the damage to the endoscope caused by disinfection.

[Brief Description of the Drawings] Figure 1 is a side cross-sectional view showing one embodiment of the present invention, Figures 2 and 3 are diagrams showing how each embodiment is used, and Figure 4
7 through 7 are side sectional views of the distal end portion showing other embodiments of the present invention. 1...Pipe body, 2...Cap, A.
...Endoscope, B...Contrast medium injection tube (treatment instrument).

Claims (1)

[Scope of utility model registration request] A tube body for guiding a treatment instrument that can be inserted into a channel of an endoscope, a cap removably fitted to one end of the tube body, a fluid filled inside the tube body, and a cap that can be detached from the cap. A treatment instrument guide tube for an endoscope, comprising: a syringe attached to the other end of the tube body to apply a pressing force to the cap via the fluid.