JP2835558B2 - Scope suction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Industrial application] Endoscopy for examination and diagnosis of gastrointestinal tract, especially stomach, large intestine, small intestine, etc.
, It is necessary to remove the washing solution, blood, bile, pigment solution, gastric fluid, intestinal fluid, etc. (hereinafter referred to as intraluminal fluid) present in the gastrointestinal tract such as stomach, large intestine and small intestine by suction. The present invention relates to a scope suction device.

[0002]

2. Description of the Related Art As shown in FIG. 3, most conventional scopes have a suction hole (mainly a forceps hole and a forceps hole) next to an objective lens window 1 at a distal end surface of a visual tube (referred to as a shaft in the text). 4 was open.

[0003] The topic of scope today is how to capture cancer quickly and how small and non-operatively endoscopically resect. In order to find a small cancer of 10 mm or less and a small cancer of 5 mm or less, a so-called kiss mark (red mucous membrane change with a diameter of about 5 mm) caused by suction is very disturbing. Meanwhile, in the conventional scope described above, when the shaft of the scope is advanced while sucking the liquid in the tube, the gastric / intestinal mucosa 3 is sucked deeply into the suction hole (forceps hole) 4 as shown in FIG. Even if the tip of No. 2 is moved, it may not be easily separated and may hinder smooth operation. Since the gastric / intestinal mucosa 3 is deeply sucked into the suction hole (forceps hole) 4 in this manner, the gastric / intestinal mucosa 3 is damaged, and a so-called kiss mark-like mark that may be mistaken for a lesion is formed. Not preferred. Further, the stomach / intestinal mucosa 3 with respect to the opening of the suction hole 4 next to the objective lens window 1
When the gastric and intestinal mucosa 3 are sucked considerably deeply, the gastric and intestinal mucosa is outside the field of view of the objective lens, and there is a time delay until the examiner notices and stops the suction. There was an inconvenience.

Japanese Patent Application Laid-Open No. 1-135327 discloses a scope suction device which is devised so as to eliminate the occurrence of the above-mentioned kiss mark-like traces (suction polyps). As shown in FIGS. 10 and 11 in the publication, the suction port (reference numeral 6)
2) is a groove-like slit that opens all around the inside of the hood, and in a place surrounded by this groove-like slit, a forceps hole, an air supply nozzle, a water supply It includes a nozzle and the like. However, in the case where the liquid in the tube is to be suctioned and removed using the suction port 62 of the groove-like slit, a so-called reverse flow / air leak through the forceps hole, the air supply nozzle, the water supply nozzle, and the like will be described later. This makes blinding of the objective lens window impossible or extremely delayed. In other words, it can be said that the above disclosed example is completely unsuitable for preventing the occurrence of damage (kiss mark) due to mucous membrane suction by detecting the blinding of the objective lens window early and stopping the suction operation. is there.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an objective lens.
Make the mucous membrane enter the field of view of the window early to make it easier to notice the adsorption and to prevent the mucous membrane from adsorbing deeply .
And an object thereof to provide a suction device of the new Scopes facilities other contrivance.

[0006]

In order to achieve the above object, a scope suction device according to the present invention is provided with a partition 7.
An objective lens is formed by dividing a large number of slits 6 formed by division.
These small gaps 6 around the window 1 are all around the objective lens window 1.
Are arranged so as to uniformly surround the
The suction is performed simultaneously .

[0007]

Since the present invention is as described above, as shown in FIG. 2, the mucous membrane 3 quickly approaches the slit 6 provided so as to surround the objective lens window 1 to block the view of the objective lens. This blinds the objective lens window .

[0008]

When performing suction by the suction device of the scope according to the present invention, even mucosa 3 come closer from any direction as closing the slit 6, examiner coating versus objective lens window mucosal 3 As a result, the suction operation can be stopped immediately after the blind state is sensed at an early stage, so that damage (kiss mark, etc.) due to mucous membrane suction can be prevented beforehand , and in addition, In the invention
The slit 6 is divided by the partition 7 and the objective lens window 1
It is provided evenly around and rectified by the partition 7
Function and equalizing function of suction by equal arrangement
The above-mentioned examiner will improve the early detection rate.
It has contributed a great deal to its achievements,
And communicates with the suction port around the conventional observation optical system.
With only a groove (Japanese Utility Model Laid-Open No. 54-135085)
And Japanese Utility Model Laid-Open No. 1-120802).
The above-mentioned early detection rate can be significantly increased.
You.

[0009]

EXAMPLE The depicted configuration is divided by a partition 7
Number provided number of slit 6 in an arrangement surrounding the same objective lens window 1 around the objective lens window 1, also the scope (Figure suction holes 4 obtained provided on the shaft 2 to open the slit 6 which is Only the main parts are shown). When the shaft 2 of the scope is pushed into the gastrointestinal tract, if it is necessary to suck the liquid or gas in the tube, this can be arbitrarily performed through the slit 6 and the suction hole 4. . In the figure, reference numeral 8 denotes a forceps hole (which does not double as a suction hole), 9 denotes a cleaning nozzle of the lens window 1, and 10 denotes a light transmitting unit.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a tip portion of a shaft showing an embodiment of the present invention.

FIG. 2 is a partially cut-away enlarged side view.

FIG. 3 is a partially cut-away enlarged side view showing a conventional example.

[Explanation of symbols]

Reference Signs List 1 objective lens window 2 shaft 3 mucous membrane 4 suction hole 6 slit 7 partition 8 forceps hole 9 washing nozzle 10 light transmitting unit

Claims (1)

(57) [Claims] (1) divided by a partition (7 )
A number of slits 6 are arranged around the objective lens window 1.
6 is arranged so as to uniformly surround the entire circumference of the objective lens window 1.
A suction device for a scope, wherein suction is performed simultaneously from all of the narrow gaps 6 .