JPS645894B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a forceps plug device for an endoscope that prevents air, washing water, etc. introduced into a body cavity through an endoscope from leaking to the outside through a forceps channel.

Generally, when using an endoscope to perform treatment or tissue examination inside a body cavity, the observation window, illumination window, forceps port, etc. at the tip of the endoscope are placed inside the body cavity to prevent them from touching the body cavity wall. Air is introduced through an endoscope. In addition, when the observation window, lighting window, etc. becomes dirty with blood, mucous membranes, etc. during treatment, tissue examination, etc., cleansing water is introduced through the endoscope to clean the observation window and the lighting window.
I try to wash the lighting windows from time to time.

However, in such treatments, tissue examinations, etc., air introduced into the body cavity, part of the washing water, and even filth from the body cavity may leak from the forceps introduction port provided on the operating unit main body through the forceps channel. There is a problem with this.

Therefore, as a means to solve this problem, in the past, a plurality of thin elastic lids stacked one on top of the other were provided with cuts that crossed each other, and the forceps introduction port was closed with each elastic lid configured in this way. An airtight structure is used to ensure that

However, with such a structure using a plurality of elastic lids, dirt adhering to the forceps may not be completely removed when the forceps are pulled out.

This invention was made in view of the above circumstances, and its purpose is to provide a forceps plug device for an endoscope that can reliably remove dirt adhering to the forceps when the forceps are pulled out. It is in.

The present invention will be explained below based on a first embodiment shown in FIGS. 1 to 6. Reference numeral 1 in FIG. 1 is the main body of the operating section of the endoscope.
b, the tip constituent parts 2c are sequentially connected. Further, an observation window 3 and illumination windows 4 are provided on the distal end surface of the distal end forming portion 2c, as shown in FIG.
The observation window 3 and the illumination windows 4 are connected to observation optical systems (not shown) and illumination optical systems (not shown) provided in the insertion section 2 and the operation section main body 1. Under bright lighting, the front of the insertion section 2 can be visually observed from an eyepiece section 5 provided on the operation section main body 1.
Note that 6 is a universal cord for guiding light to the illumination optical system. Further, a nozzle 7 is provided on the distal end surface of the distal end component 2c, and an air supply/conveyance channel (not shown) also provided within the insertion section 2.
through an external air/water supply device (not shown)
Air and water can be supplied from the Note that 8 is an air/water supply operation section, and 9 is an angle operation knob for remotely operating the curved tube section 2b. Furthermore, a treatment instrument insertion channel (hereinafter referred to as a channel) 10, which is a forceps channel, is inserted into the insertion section 2 and the operation section main body 1. The tip of this channel 10 communicates with a forceps port 11 that also serves as a suction port provided at the tip of the tip component 2c. Similarly, the rear end of the channel 10 is connected to the operating section main body 1.
The forceps plug device 12, which is the gist of the present invention, is connected to the forceps plug device 12, which is the gist of the present invention. The detailed structure of this forceps plug device 12 is shown in FIG. To explain the forceps plug device 12, reference numeral 13 in the figure represents a forceps introduction port (hereinafter referred to as the introduction port) of the channel 10 provided in the operation section main body 1. Further, in the figure, reference numeral 15 denotes a mounting tube, and on the upper side of the mounting tube 15, a mounting seat 15a constituted by a large-diameter cylindrical portion is provided. The lower side of the mounting tube 15 is fixed to the operating section main body 1 via a threaded portion 15b, and is communicated with the channel 10. An elastic stopper 16 is detachably attached to the attachment seat 15a of the attachment tube 15 protruding from the operation section main body 1.
The elastic stopper 16 is a combination of elastic stopper pieces 26a and 26b, each of which has a substantially cylindrical shape vertically divided into two, as shown in FIG. A forceps insertion passage portion 18 is formed by the mating portion of both. Specifically, the elastic plug pieces 26a and 26b are made of an elastic body such as urethane rubber or silicone rubber. And elastic plug pieces 26a, 26
A slit surface 28 constituting the forceps insertion passage 18 is formed on the upper central side of the inner surface of b, and a large number of uneven portions 27 are similarly formed on the lower part. Then, each elastic plug piece 26a, 26b is
A, 26b are adhered to each other using the flat parts 29, 29 for attachment provided on both sides of the inner surface, and the parts shown in FIGS.
As shown in the figure, the concave and convex portions 27 engage with each other. In addition, the outer diameter when the elastic plug piece 26a and the elastic plug piece 26b are combined is the same as that of the mounting tube 1.
The diameter is almost the same as the inner diameter of 5. Then, an elastic stopper 16 having a forceps insertion passage 18 therein is provided.
It consists of Further, the length of the forceps insertion passage portion 18 of the elastic plug 16 is longer than the outer diameter dimension of the elastic plug 16.

Further, on the upper side of the elastic stopper 16, an engaging portion 16a constituted by a large diameter portion is provided. As a result, the engaging portion 16a elastically engages with the mounting seat 15a of the mounting tube 15, and the elastic stopper 16 is accommodated within the mounting tube 15. In addition, on the upper side of the mounting tube 15,
A cap 19 having an opening 19a for inserting forceps in the center is removably covered with a threaded portion 20 as a coupling medium, and removably fixes the elastic stopper 16. That is, the opening 19a, the forceps insertion passage 18
Through this, the forceps 21 can be inserted and removed from the outside into the channel 10. Note that 22 is an insertion guide groove.

Next, the forceps plug device 12 configured in this way will be explained.
The effect of this will be explained. When performing treatment, tissue examination, etc. inside a body cavity using an endoscope, the endoscope is first inserted into the body cavity. Next, air is introduced into the body cavity through the endoscope to prevent the observation window 3, illumination windows 4, 4, etc. from touching the body cavity wall. At this time, as shown in FIG. 3, the forceps insertion passage 18 is in close contact due to elasticity, so that the air introduced into the body cavity does not leak through the channel 10.

When the forceps 21 are inserted into the channel 10 through the opening 19a as shown in FIG. 6, the tips of the forceps 21 are guided into the body cavity. In other words, it becomes possible to perform treatments, tissue examinations, etc. When the treatment, tissue examination, etc. are finished, the forceps 21 are pulled out from within the channel 10.

Here, the forceps insertion passage section 18 has uneven portions 27...
is provided in the forceps insertion direction, so the forceps 21
When pulling out the forceps 21, squeeze the outer peripheral surface of the forceps 21. Then, due to this squeezing effect, dirt adhering to the circumferential surface of the forceps 21 is squeezed off.

Therefore, dirt adhering to the forceps 21 can be reliably removed.

In addition, since the elastic stopper 16 is easy to replace,
Channel 10 can be easily disinfected and cleaned. Furthermore, since the forceps insertion passage 18 is long, the elastic plug 16
The airtightness of the channel 10 can be ensured at any time.

Further, the present invention is not limited to the above-mentioned embodiment, but may be implemented as a second embodiment shown in FIG. 7 or a third embodiment shown in FIG. 8.

The second embodiment is a modification of the first embodiment, and more specifically, the outer peripheral locking protrusion 30 on the upper side of the mounting tube 15
In addition, a locking groove 31 is provided in each elastic plug piece 26a, 26b instead of an engaging portion, and the locking protrusion 30 is
A locking groove 31 is engageably and detachably engaged with the elastic stopper 16, which also serves as a cap.

In the third embodiment, wavy uneven portions 31 are used in place of the angular uneven portions of the first and second embodiments.

As explained above, according to the present invention, when the forceps are pulled out, dirt attached to the forceps can be reliably removed.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an endoscope according to a first embodiment of the present invention, FIG. 2 is a front view showing the distal end surface of the endoscope, and FIG. 3 is a sectional view showing a forceps plug device.
Fig. 4 is a plan sectional view showing the forceps insertion passage of the elastic stopper, Fig. 5 is a perspective view showing the elastic stopper pieces that make up the elastic stopper, and Fig. 6 shows the state when forceps are inserted through the elastic stopper. 7 is a sectional view showing a forceps plug device according to a second embodiment of the present invention, and FIG. 8 is a sectional view showing a forceps plug device according to a third embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Operating unit main body, 12... Forceps plug device, 10... Forceps channel, 15... Mounting tube, 16... Elastic plug, 1
8... Forceps insertion passage portion, 27... Uneven portion.

Claims (1)

[Claims] 1. An operating section body of an endoscope in which a forceps introduction port of a forceps channel is provided, a mounting tube attached to the forceps introduction port of this operating section main body, and a forceps insertion tube that is removably housed and fixed in this mounting tube. An endoscope equipped with an elastic stopper having a passage portion, wherein the elastic stopper is formed with a concave and convex portion that engages with at least a portion of the forceps insertion passage in the direction of the forceps insertion passage. Endoscope forceps plug device.