JPH02164329A - Sucking mechanism of direct viewing endoscope - Google Patents

Abstract

PURPOSE:To prevent phlegm or mucilage from adhering to an observation window to cause a remarkable obstacle to observation by opening a suction port a little to the outer peripheral surface of an insert portion, and inclining a pipeline in the vicinity of the suction port in such a manner that as the pipeline goes away from the suction port, it approaches the shaft center of the insert portion. CONSTITUTION:An observation window 3, an illumination window 4 and a suction port 5 are provided on the leading end surface of an insert portion 1. The suction port 5 provided on the leading end surface is opened a little to the outer peripheral surface of the insert portion 1, that is, at a position remote from the observation window 3, and a pipeline 6 in the vicinity of the suction port 5 is inclined in such a manner that as it goes away from the suction port 5, it approaches the shaft center of the insert portion 1. The inclined pipeline 6 is directly connected to a pipeline 7. In case of such phlegm or mucilage by a direct-viewing endoscope having the thus formed insert portion 1, when suction is performed at an operation part at operator's side, as the phlegm or mucilage is passed from the suction port 5 opened in the vicinity of the inner wall through the inclined pipeline 6 to be smoothly sucked and be discharged from a discharge port of an endoscope outside the body.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a direct-viewing endoscope in which an observation window, an illumination window, etc. are attached to the distal end surface of the insertion section, and a suction port is provided on the same surface. This relates to a suction mechanism.

[Conventional technology]

In the conventional suction mechanism of a direct-view endoscope with a suction port, a conduit is formed that continues to the suction port in a direction perpendicular to the distal end surface of the insertion section, and the suction port is formed near the center of the distal end surface. Ta.

[Problem to be solved]

For example, with a direct-viewing endoscope that is inserted into the bronchus, when attempting to aspirate songs or mucus, the conventional suction mechanism has a suction port near the observation window, so the suction port is placed near the observation window, so the suction port is placed near the observation window. There was a risk that the observation would be seriously hindered by the adhesion of liquids, mucus, etc. In addition, since smell and mucus adhere to the inner wall of the bronchi, there is a distance between the suction port of the conventional suction mechanism and the inner wall on which smell and mucus have adhered, making it possible to efficiently suction cough and mucus. I couldn't do it either.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a suction mechanism for a direct-viewing endoscope that eliminates the possibility that jets, mucus, etc. may adhere to the observation window and seriously impede observation, and that facilitates suction of jets, mucus, etc. purpose.

[Means to solve the problem]

In order to achieve the above object, the present invention has a suction port that opens toward the outer circumferential surface of the insertion section, and a conduit near the suction port that is inclined so that it approaches the axis of the insertion section as it moves away from the suction port. It is.

[Effect]

In this invention, in the case of a bronchial endoscope, the suction port moves away from the observation window and opens closer to the outer circumferential surface of the insertion section, and the conduit near the suction port is inclined, so that it does not adhere to the inner wall of the bronchus. This makes it easier to absorb dirt, mucus, etc. In addition, since spray, mucus, etc. can be reliably sucked, it is also possible to prevent odor, mucus, etc. from adhering to the observation window, which would seriously impede observation.

〔Example〕

Preferred embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, an observation window 3, an illumination window 4 (see FIG. 2), and a suction port 5 are provided on the distal end surface 2 of the insertion section 1. The suction port 5 provided on the distal end surface opens closer to the outer circumferential surface of the insertion section 1, that is, at a position farther away from the observation window 3, and the axis of the insertion section 1 increases as the distance from the suction port 5 increases through the conduit 6 near the suction port 5. It is tilted so that it approaches the heart. This inclined conduit 6 is connected to a straight conduit 7. When suctioning coughs, mucus, etc. with a direct-viewing endoscope having the structure of the insertion section 1 configured in this way, if suction is performed using the hand control section (not shown) of the endoscope, the steep or mucus etc., which are normally attached to the inner wall of the bronchi, are smoothly suctioned through the inclined conduit 6 from the suction port 5 opened at a position close to the inner wall, and are discharged from the outlet of the endoscope outside the body. Ru.

In the second embodiment shown in FIG. 3, the opening surface of the suction port 5 is inclined so as to face diagonally outward.

That is, the distal end surface 2 of the insertion portion 1 is not formed into a flat surface, but is cut obliquely at the portion where the suction port 5 is formed.

The third embodiment shown in FIG. 4 shows an example in which the linear conduit 7 is used both as a suction conduit and a conduit for insertion of forceps etc. when a treatment tool such as forceps is also used. A treatment instrument insertion conduit 8 extending linearly from the straight conduit 7 is provided,
This pipe line 8 is shown connected to an inclined pipe line 6. When suctioning spray, mucus, etc. from the suction port 5 through the conduit 6 and the straight conduit 7, it is necessary to close the opening of the treatment instrument insertion conduit 8, so a slit 9 is formed. Attach the rubber cap 10. When inserting a treatment instrument such as forceps, the forceps or the like can pass through the treatment instrument insertion conduit 8 and be taken out from the slit 9 of the cap 10.

The fourth embodiment shown in FIG. 6 also shows one in which a treatment instrument insertion conduit 8 is formed, and a spring 11 is used as a means to close the opening of the treatment instrument insertion conduit 8 during suction so that the opening is always closed. The lid portion 12 is shown attached.

The fifth embodiment shown in FIG. 7 is also provided with a treatment instrument insertion conduit 8, and the two conduits 6.8 are configured so that when one is closed by the rotation of the rotary valve 13, the other is opened. The rotary valve 13 can be operated from a hand-held operating section via a wire 14.

In the embodiment shown in FIG. 4 and below, the treatment instrument insertion conduit 8 is provided separately from the inclined suction conduit 6, and when the straight conduit 7 is used together, the treatment instrument insertion conduit 8 is used for suctioning. Although various means for keeping the conduit 8 closed are shown, it is of course possible to employ other means not shown.

[Effect] As explained above, according to the present invention, the suction port opens closer to the outer circumferential surface of the insertion portion, and the conduit near the suction port is inclined so that it approaches the axis of the insertion portion as it moves away from the suction port. For example, in the case of a bronchial endoscope, it is possible to smoothly aspirate squirts and mucus, and by smoothly sucking odor and mucus, it is possible to prevent squirts and mucus from adhering to the observation window. It does not cause any significant hindrance to observation. In addition, if the opening surface of the suction port is tilted so as to face diagonally outward, the suction effect is further enhanced.

Furthermore, even for endoscopes that require the insertion of treatment instruments, the suction line is branched and the opening of the treatment instrument insertion line is closed during suction, making it reliable. Can perform suction.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the first embodiment, FIG. 2 is a front view showing the distal end surface of the insertion section, and FIG. 3 is a sectional view showing the second embodiment.
Fig. 4 is a sectional view showing the third embodiment, Fig. 5 is a perspective view showing the cap used in Fig. 4, Fig. 6 is a sectional view showing the fourth embodiment, and Fig. 7 is a sectional view showing the fifth embodiment. It is a sectional view showing an example. 1...insertion section, 2...tip surface, 3...
Observation window, 4...Illumination window, 5...Suction port,
6...Pipe line.

Claims (1)

[Claims] 1. An observation window, an illumination window, etc. are attached to the distal end surface of the insertion section,
In the suction mechanism of a direct-view endoscope with a suction port provided on the same surface, the suction port opens toward the outer circumferential surface of the insertion tube, and as the conduit near the suction port moves away from the suction port, the axis of the insertion tube shifts. A suction mechanism of a direct-viewing endoscope is characterized by being tilted so as to approach. 2. The suction mechanism for a direct-viewing endoscope according to claim 1, wherein the opening surface of the suction port is inclined so as to face diagonally outward. 3. Connect a straight line to the inclined line, provide a line for inserting a treatment instrument extending straight from the straight line, use this line and the inclined line separately, and insert the treatment instrument during suction. 2. The suction mechanism for a direct-viewing endoscope according to claim 1, further comprising means for closing the insertion channel.