JPH0242490B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope device equipped with a suction mechanism.

Generally, in an endoscope device equipped with a mechanism for suctioning dirt, etc. in a body cavity, a pressure relief port B communicating with a forceps channel C is connected to a switching plug A attached to the operating section of the endoscope, as shown in Fig. 1. At the same time, a suction port D is formed by branching from between the pressure relief port B and the forceps channel C, and a suction device E is connected to the suction port D. And suction device E
is operated at all times, and when not performing suction, do not block the release port B with your finger, etc., to prevent atmospheric air from being sucked directly into the suction device E through this pressure release port B, and suction is not performed. When performing suction, this pressure relief port B is closed with a finger F, and the filth, etc. in the body cavity is suctioned through the forceps channel C while preventing atmospheric air from being sucked through the pressure relief port. There is. However, with such a device, the suctioned dirt may enter the opening B due to the suction force and adhere to the finger F, which is not sanitary. Conventionally, an orifice C was provided in the vicinity of the pressure relief port B, and this orifice G was used to prevent dirt from entering the pressure relief port B, but the effect of such an orifice G was ineffective. This was sufficient, and there were cases where dirt adhered to the finger F. In addition, in the conventional method, the airtightness is poor because the pressure relief port B is directly blocked with the finger F, and the air is sucked little by little through the pressure relief port B, which may reduce the suction power for dirt, etc. in the body cavity. Ta.

The present invention was made based on the above circumstances, and its purpose is to prevent suctioned filth from adhering to fingers, which is sanitary, and to ensure that the pressure release port is closed to ensure suction power. The objective is to obtain an endoscope device that is not damaged.

The present invention will be described below with reference to embodiments shown in the drawings. 2 to 5 show a first embodiment of the invention. This first embodiment is provided with a removable switching plug. Figure 1 is the operation part, 2 is the insertion part, and this insertion part 2 includes suction, air supply,
A forceps channel 3 that also serves as a water supply channel is formed, and this forceps channel 3 constitutes a fluid conduit, one end of which opens at the tip of the insertion section 2, and the operation section 1.
An opening 4 communicating with the other end of the forceps channel 3 is formed in the forceps channel 3 . A switching plug 5 is provided in this opening 4. The switching plug 5 is detachably attached to the opening 4 by a bayonet ring 6, and 7 is a bayonet ring presser and 8 is a spring that applies a biasing force to the bayonet ring 6. This switching plug 5 has a cylindrical main body 9.
The piston 10 is slidably inserted into the main body 9. The distal end of the main body 9 is airtightly fitted into and communicated with the forceps channel 3. Note that 11 is an O-ring that maintains airtightness. Further, a pressure relief passage 12 that constitutes a part of the fluid pipeline is formed along the axial direction in the center of the piston 10, and this pressure relief passage 12 is connected to the piston 1.
0 and communicates with a pressure relief port 13 opened at the upper end surface of the piston 10. Further, a suction port 14 as an example of a fluid transfer port is opened at the side of the main body 9, and an air/water supply port 15 is opened below the suction port 14. A suction device 17 as an example of a fluid transfer means is connected to the suction port 14 via a suction pipe 16, and a fluid transfer means is connected to the air/water supply port 15 via an air/water supply pipe 18. Air/water supply device 1 as an example
9 is connected. Further, an annular communication groove 20 is formed on the outer periphery of the piston 10, and this communication groove 20 communicates with the pressure relief passage 12 described above. Note that O-rings 21, 21 are provided at the top and bottom of the communication groove 20, respectively, to maintain airtightness. Therefore, when this communication groove 20 faces the suction port 14, the suction port 14 communicates with the forceps channel 3 via this communication groove 20 and the pressure relief passage 12, and this communication groove 20 also communicates with the forceps channel 3. - When facing the water supply port 15, this communication groove 20 and pressure relief passage 1
The air/water supply port 15 is configured to communicate with the forceps channel 3 via the forceps channel 3. The piston 10 is normally biased upward by the biasing force of the spring 22, and the communication groove 20 is normally opposed to the suction port 14. Further, a closing body 23 is attached to the upper end of the piston 10. This closing body 23 is made of an elastic material such as synthetic rubber, has a cap shape, and has a cap shape.
It is removably fitted into a flange 24 formed at the upper end of 0. Note that this closure body 23 has a connecting portion 2.
5 is integrally formed, and the distal end of the connecting portion 25 is attached to the upper end of the main body 9, so that the closing body 23 will not be lost when it is removed. The inner surface of this closing body 23 is spaced apart from the upper end surface of the piston 10, and there is a space between them.
A gap is formed on the inner surface of the closing body 23, and a close contact portion 26 is formed on the inner surface of the closing body 23, facing the pressure relief port 13 of the piston 10 and having a shape that fits tightly into the pressure relief port 13. When the upper surface of the closure body 23 is pressed with a finger, the closure body 23 is elastically deformed, and the contact portion 26 moves forward to tightly fit into the pressure release port 13 and close it. Further, the close contact portion 26 is provided on the upper wall portion of this closure body 23.
A plurality of communication holes 27 are formed around the pressure relief port 13, that is, at positions not facing the pressure relief port 13, and the pressure relief port 13 is configured to communicate with the atmosphere through these communication holes 27.

The first embodiment of the present invention configured as described above is as follows:
When no operation is performed, the piston 10 is raised by the biasing force of the spring 22 as shown in FIG. Since the air is communicated with the atmosphere through the pressure relief port 13, the air is directly sucked into the suction device 17 through the pressure relief port 13, and no suction is performed inside the body cavity. When performing suction, press the upper surface of the closing body 23 with a finger 28 as shown in FIG.
to be tightly fitted. Therefore, this pressure relief port 13 is closed and atmospheric air is no longer sucked in, so that the suction device 17 is closed.
All of the suction force acts on the forceps channel 3 to suction dirt, etc. inside the body cavity. In this case, the tight fitting part 26 of the closure body 23 is tightly fitted into the pressure relief port 13, and the communication holes 27 are provided at positions that do not face the pressure relief port 13, so that the suctioned filth is Even if it enters the pressure relief port 13, it will not adhere to the finger 28. In addition, since the close contact portion 26 of this closure body 23 is formed in advance to tightly fit into the pressure relief port 13, it is highly airtight, and air is not sucked in from the pressure relief port 13 and the suction force is impaired. Nor. When air or water is to be supplied, further pressure is applied to lower the piston 10 as shown in FIG.
is placed opposite the air/water supply port 15 to supply air or water.

Note that the present invention is not limited to the first embodiment described above. For example, FIG. 6 shows a second embodiment of the present invention. In this second embodiment, no communication hole is provided in the closing body 23, and communication holes 27' are provided in the flange portion 24 of the piston 10.
was formed. In this second embodiment, since the opening direction of the communication holes 27' is opposite to the opening direction of the pressure relief port 13, it is possible to more effectively prevent dirt from flying out. Note that this second embodiment has the same configuration as the first embodiment except for the above points, and the same reference numerals are given to the parts corresponding to those of the first embodiment in FIG. .

Furthermore, the present invention is not limited to the second embodiment described above.

For example, the structure of the closing body is not necessarily limited to that of the above-mentioned embodiments, but any structure may be used as long as it moves forward by pressing with a finger and closes the pressure release port.

Moreover, the position of the communication hole is not necessarily limited to the above-mentioned one, and may be any position that does not face the pressure relief port.

As described above, the endoscope device of the present invention includes a fluid conduit whose one end side opens at the distal end of the insertion portion of the endoscope, and a pressure relief port provided at the other end of the fluid conduit and communicates with the atmosphere. a fluid transfer port that communicates with the middle of the fluid conduit and is connected to the fluid transfer means; It has a close contact part in the part facing the pressure relief port, and in the non-pressed state, there is a gap between the pressure relief port and the close contact part, and in the pressed state, the close contact part is in close contact with the pressure release port. a cap-shaped closing body having elasticity that closes the pressure relief port by closing the pressure relief port; and at least one of the closure body and the member on the pressure relief port side, which is formed at a position not facing the pressure relief port, and the above-mentioned It is provided with a communication hole that communicates the gap between the pressure relief port and the contact portion with the atmosphere.

Therefore, when suction is to be performed, the pressure release port can be closed by pressing the blocker, and the operation and operation are the same as in the conventional method, and the pressure release port is closed by the tight part of the blocker. Therefore, it can be closed more reliably than when closing the pressure relief port directly with the pad of your finger, and since the communication path is provided in a position that does not face the pressure relief port, suctioned dirt can enter the pressure relief port. However, it does not stick to your fingers and is hygienic.
In addition, this closing body can be formed in advance so as to tightly fit into the pressure relief port, which ensures that the pressure relief port is blocked and prevents atmospheric air from being sucked in from the pressure relief port during suction, impairing the suction force. The effects are great, such as the fact that there is no need to use it, and the configuration is simple.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the main parts of a conventional example. Second
5 to 5 show a first embodiment of the present invention, FIG. 2 is an overall side view, FIG. 3 is a vertical sectional view of main parts,
FIGS. 4 and 5 are longitudinal cross-sectional views of essential parts for explaining the operation. Moreover, FIG. 6 is a longitudinal sectional view of the main part of the second embodiment. DESCRIPTION OF SYMBOLS 1... Operation part, 2... Insertion part, 3... Forceps channel, 5... Switching plug, 9... Main body, 10... Piston, 12... Pressure relief passage, 13... Pressure relief port, 14
...Suction port, 15... Air/water supply port, 17... Suction device, 19... Air/water supply device, 20... Communication groove, 23... Closure body, 24... Flange (pressure relief port) side member), 26...close contact portion, 27, 27'...communication hole.

Claims (1)

[Claims] 1. A fluid conduit that passes through the insertion section of the endoscope and opens at one end at the distal end of the insertion section, and a pressure relief port that is provided at the other end of the fluid conduit and communicates with the atmosphere. a fluid transfer port that communicates with the middle of the fluid pipeline and is connected to the fluid transfer means; a fluid transfer port that is supported by the pressure relief port of the pressure relief port side member and that is connected to at least the pressure relief port; It has a contact part in the opposing part, and in the non-pressing state, there is a space between the pressure relief port and the contact part, and in the pressed state, the contact part comes into close contact with the pressure release port, thereby releasing pressure. A cap-shaped closing body having elasticity that closes the mouth, and at least one of the closing body and the member on the pressure relief port side, formed at a position not facing the pressure relief opening and in close contact with the pressure relief opening. An endoscope device comprising: a communication hole that connects the space between the endoscope and the endoscope to the atmosphere.