JPS6314819Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to an endoscopic treatment instrument that is used by being introduced into a body cavity using an endoscope channel.

[Technical background of the invention and its problems]

In the case of an endoscope, a treatment instrument is introduced into a body cavity using a channel of the endoscope, and a target site within the body cavity is treated under observation by the endoscope. Various treatment tools such as injection tools and biopsy forceps are used for such treatments, but most of them are treatment tools that can be inserted into the channel of the endoscope, as shown in Utility Model Application No. 13373/1983. It has been pointed out that since the treatment section is simply provided at the tip of the main body, it is not possible to suppress the target area or raise the target area, making it impossible to perform safe and sufficient treatment. has been done.

Therefore, recently, Japanese Patent Application No. 58-250562 (Japanese Unexamined Patent Publication No. 60
137354) has been proposed. This is a device that is equipped with a suppressor that raises the target area by pressing it against the periphery of the target area to be treated, in addition to the treatment section at the tip of the main body of the treatment instrument. The area is raised and fixed, and the treatment section is applied to the raised part.

However, according to this method, although it is true that the treatment can be performed safely by raising the area using the suppressor, it has the disadvantage that the width of the target area to be raised cannot be changed because the opening width of the suppressor is constant. is pointed out. For this reason, when performing a treatment, there is a problem in that the inner wall of the body cavity cannot be set to the optimum width for the treatment, and the method cannot be said to be sufficient.

[Purpose of invention]

This invention was made in view of the above-mentioned circumstances, and its purpose is to provide an endoscopic treatment tool that can arbitrarily change the width of the target area to be raised.

[Summary of the idea]

That is, in this invention, by inserting an adjusting sheath part into the treatment instrument body to change the opening width of the suppressor by applying an external force to the suppressor, the opening width of the suppressor can be freely adjusted by operating the adjusting sheath part. The aim is to make it possible to change it to

[Example of idea]

This invention will be explained below based on a first embodiment shown in FIGS. 1 to 5. FIG. 1 shows the entire endoscopic treatment tool, and 1 is the treatment tool main body. The treatment instrument main body 1 is composed of a flexible sheath made of a tightly wound stainless steel coil, for example. As shown in FIG. 2, the treatment instrument main body 1 is formed to have a narrower outer diameter than the channel 3 of the endoscope 2, so that it can be freely inserted into the channel 3. . Further, a connecting tube 5 having a pair of suppressors 4a and 4b is attached to the distal end of the treatment instrument main body 1. The suppressors 4a and 4b are constructed by integrally forming a pair of plate-like portions extending parallel to the front at the distal end of the connecting tube 5. The distal ends of these suppressors 4a and 4b are formed into a flat, expanding plate shape, while the cross section is formed into a U-shape as shown in FIG. 3. Of course, the suppressors 4a and 4b are arranged so that the inner sides of their U-shaped parts face each other, and by pressing the tips of the suppressors 4a and 4b against the inner wall of the body cavity, the inner wall of the body cavity is compressed and raised. I am now able to do this. The root side of each suppressor 4a, 4b is thickened to match the thickness of the connecting pipe 5, and the thick portion has a tapered portion 6 that slopes toward the root of the suppressor 4a, 4b. are formed respectively.

On the other hand, 7 is an adjustment sheath part. The adjustment sheath portion 7 is formed of a flexible sheath consisting of a tightly wound coil made of, for example, a Teflon sheath. The adjustment sheath portion 7 is arranged so as to be freely inserted into the treatment instrument main body 1. Also, adjustment sheath 7
A distal end tip 9 made of stainless steel, for example, is integrally provided at the distal end thereof, and has a tapered portion 8 that becomes sloped toward the distal end. This tip 9 is connected to the suppressor 4a, 4b.
The adjustment sheath part 7 is movably arranged between the
The opening width between the suppressors 4a and 4b is changed by applying an external force due to the collision between the tapered part 6 of the distal tip 9 and the tapered parts 9 of the suppressors 4a and 4b caused by operating the tip in the axial direction. It is now possible to do so.

Furthermore, an injection needle 10, for example, as a treatment tool is movably inserted into the adjustment sheath portion 7. This injection needle device 10 is constructed by inserting an injection tube 13 also made of Teflon, which has an injection needle 12 at its tip, into a flexible sheath 11 made of, for example, Teflon. By protruding toward the tips of the suppressors 4a and 4b, treatment is performed with the injection needle 12 that protrudes and retracts through between the suppressors 4a and 4b.

Therefore, when treating, for example, a blood vessel using the endoscopic treatment tool configured as described above, after inserting the endoscope 2 into the body cavity, an adjustment sheath is inserted into the channel 3 of the endoscope 2. The treatment instrument main body 1 into which the section 7 has been inserted in advance is inserted, and then the flexible sheath 11 and the injection tube 13 are sequentially inserted into the adjustment sheath section 7. After this, oppressor 4
a, 4b are brought close to the target area 14, for example, the right and left peripheral areas of a blood vessel portion, as shown in FIG. The root sides (tapered portions 6) of the suppressors 4b collide with each other, and the applied external force causes the suppressors 4a, 4 to move as shown in FIG.
b opens. Then, the distance between the suppressors 4a and 4b is adjusted until they fit the left and right peripheral parts of the blood vessel part, and then the target area 14 is compressed by pressing the suppressors 4a and 4b against the left and right peripheral parts of the blood vessel part. The bulge is raised to an optimum width for puncturing the injection needle 12.

Thus, the suppressor 4a by the adjusting sheath part 7,
By freely changing the opening width of 4b, the width of the target area to be raised can be set to the most optimal width according to the treatment.

Note that after elevating the target area 14, the target area 1
Of course, by protruding the injection needle 12 into the four blood vessels, puncture is performed and treatment is performed.

Furthermore, this invention is not limited to the one embodiment described above, but can be applied to the second embodiment shown in FIGS. 6 to 8, the third embodiment shown in FIGS. 9 to 14, and the third embodiment shown in FIGS. The fourth embodiment shown in FIGS. 15 to 17 may also be used.

That is, in the second embodiment, the distal tip 9 of the adjusting sheath part 7 is made thin, and each suppressor 4 is made thin.
A pair of protrusions 20, 2 on the root side of the inner surface of a, 4b
0, and the opening width of each suppressor 4a, 4b is changed by the abutment between the tip 9 and the projections 20, 20. For details, see each suppressor 4
The distance between a and 4b is narrower than the outer diameter of the distal tip 9, and the same effect can be achieved even with this arrangement. Note that FIG. 6 shows a cross section of the endoscopic treatment instrument, FIG. 7 shows a state in which the suppressors 4a and 4b are open, and FIG.
4 is shown in a raised state.

Further, in the third embodiment, the distal tip 9 of the adjusting sheath part 7 has a diameter smaller than the distance between the respective suppressors 4a, 4b at the small diameter part, and a diameter smaller than the distance between the respective suppressors 4a, 4b at the large diameter part.
Each suppressor 4a, 4b is made into an ellipse with a dimension longer than the interval b, and the large diameter portion and each suppressor 4a, 4b are abutted based on the rotational operation of the adjustment sheath portion 7.
The width of the opening can be changed. In addition,
Fig. 9 shows the entire endoscopic treatment instrument, Fig. 10 shows a front cross section around the suppressors 4a and 4b, Fig. 11 shows a side cross section thereof, and Fig. 12 shows the suppressor 4a and 4b opened. FIG. 13 shows a side cross section thereof, and FIG. 14 shows a state in which the target region 14 is raised by the open suppressors 4a and 4b.

In the fourth embodiment, the suppressors 4a and 4b are made of magnets, and the tip 9 of the adjusting sheath part 7 is made of a magnet with the same polarity as the inside of the suppressors 4a and 4b. , 4b side and the tip tip 9 side due to the same polarity, the suppressor 4
The opening width of each suppressor 4a, 4b is changed by applying an external force to a, 4b. In addition, the first
Fig. 5 shows a side cross section of the endoscopic treatment tool when it is closed, Fig. 16 shows a side cross section of the endoscopic treatment tool when it is opened, and Fig. 17 shows how the open suppressors 4a and 4b are used to control the target area. 14 is shown in a raised state.

Further, in each of the embodiments described above, an injection needle was used as the treatment tool, but of course any type of treatment tool may be used. in particular,
Instead of the injection needle, it is conceivable to provide biopsy forceps to abut against the raised area and collect the mucous membrane. An example thereof is shown in FIGS. 18 to 21, respectively. In addition, what is shown in FIG.
The biopsy forceps 30 are attached to a treatment instrument that changes the opening degree of the suppressors 4a, 4b using the taper parts 6, 8, and FIG. The biopsy forceps 30 are attached to a treatment tool that is provided to change the opening degree of the suppressors 4a, 4b, and FIG. FIG. 21 shows the biopsy forceps 30 attached to a treatment instrument that changes the openings of the suppressors 4a and 4b using magnets.

[Effect of idea]

As explained above, according to this invention, since the opening width of the suppressor is changed using the adjustment sheath, the interval between the suppressors can be changed to an arbitrary width, and treatment can be performed. At the time of treatment, the target area to be raised can be made to the most optimal size, and the treatment can be performed safely and under a sufficient system.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of this invention, FIG. 1 is a perspective view showing the entire endoscopic treatment tool, and FIG. 2 is a side view showing the treatment tool together with the endoscope. 3 is a sectional view of the suppressor, FIG. 4 is a side sectional view showing the suppressor in an open state, and FIG. 5 is a side view showing a state in which the target area is raised using the suppressor. 6 to 8 show a second embodiment of this invention, FIG. 6 is a side sectional view showing the treatment instrument together with the endoscope, and FIG. 7 is a side sectional view showing the suppressor in an open state. A sectional view, FIG. 8 is a side view showing a state in which the target area is raised using the suppressor, and FIGS. 9 to 14 show a third embodiment of this invention.
Fig. 9 is a perspective view showing the entire endoscopic treatment instrument, Fig. 10 is a front cross-sectional view of the area around the suppressor, Fig. 11 is a side sectional view of the area around the suppressor, and Fig. 12 is a view of the suppressor being open. 13 is a side sectional view, FIG. 14 is a side view showing a state in which the target area is raised using the suppressor, and FIGS.
Fig. 7 shows a fourth embodiment of this invention, Fig. 15 is a side sectional view of the suppressor area, Fig. 16 is a side sectional view showing the suppressor in an open state, and Fig. 17 is a side sectional view of the suppressor. FIGS. 18 to 21 are side views showing other embodiments of this invention in which an injection needle is used in the treatment area. DESCRIPTION OF SYMBOLS 1... Treatment instrument body, 2... Endoscope, 3... Channel, 4a, 4b... Suppressor, 7... Adjustment sheath part, 10... Injection needle device (treatment part).

Claims (1)

[Scope of utility model registration request] a treatment instrument body that can be inserted into a channel of an endoscope; a suppressor that is provided at the tip of the treatment instrument body and raises the target area by pressing against the periphery of the target area to be treated; an adjustment sheath part that is insertably provided and applies an external force to the suppressor to change the opening width of the suppressor; and an adjustment sheath part that is provided at the tip of the treatment instrument main body and treats the raised target area by pressing the suppressor. An endoscopic treatment instrument characterized by comprising a treatment section.