JPH0368328A - Plug body for medical device - Google Patents

Abstract

PURPOSE:To prevent a slip-off piece from dropping in a medical device from a plug body even when a part of the plug body is slipped off due to deterioration by a method wherein a brittle part for breakage having size larger than that of an opening part communicated to a line through which the medical treating tool is inserted is mounted to the closing film part of a plug body. CONSTITUTION:A plug body 8 for a medical device is on the outer end side with a closing film part 9 having a slit 10, and is attachable to an insertion port 5 of a line which is located in a medical device and through which a medical treating tool is inserted. A brittle part 13 for breakage 13 having size larger than a diameter phiB of an opening formed near the insertion port 5 side than the closing film part 9 and communicated to the line for inserting a medical treating tool is mounted to the closing film part 9. As a result, even when a part of a plug body is slipped off due to deterioration, the slip-off piece is prevented from dropping in a medical device from the plug body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a frame for a medical instrument for closing an insertion 1 of a treatment instrument insertion conduit within a medical instrument.

[Background Art] In recent years, various treatments have been performed using endoscopes, such as injecting medical solutions into a patient's body using its channels, or introducing treatment tools to excise and sample diseased sites. However, filth and air within the body cavity may leak out through this channel due to changes in the pressure within the body cavity.To prevent this, generally speaking, the channel is A sealing frame is provided in the insertion opening. FIG. 10 shows a frame 50 attached to the insertion port 5 of a deschinnel, and this frame 50 is generally made of an elastic material such as rubber. The round hole 51 is on the right so that the medical device can be inserted without removing the frame 50, and to maintain airtightness at that time. A closing membrane 53 having slits 52 is provided to maintain the properties.

[Problems to be Solved by the Invention] However, in the frame body 50 described above, by repeatedly inserting and removing treatment tools, the obturating membrane 53 deteriorates and may fall off without the operator noticing. It can happen. At this time, since the conventional closing membrane 53 has a uniform thickness,
It does not necessarily fall off from the outer periphery of the closure membrane 53,
As shown in FIG. 10, a part of the periphery of the slit 52 may fall off due to wear during insertion and removal of the treatment instrument. If this happens, the surgeon, who does not notice that the instrument has fallen off, may repeat the cupping of the treatment instrument or use the syringe to deliver fluid.
There are cases where the fallen piece 54 passes through the round hole 51 and falls into the body cavity through the channel of the endoscope.

The present invention has been made in view of the above circumstances, and provides a frame for medical instrument viewing that prevents the fallen pieces from falling from the frame into the inside of a medical instrument even if a part of the frame falls off due to deterioration. is intended to provide.

[Means for Solving the Problems] The frame for a medical device of the present invention is provided with a closure membrane portion having a slit on the outer end side, and can be attached to an insertion opening of a conduit for passing a treatment instrument in a medical device. In the above-mentioned treatment, it is located closer to the insertion port than the closing membrane part! The closing membrane portion 1.l: is provided with a breakable fragile portion having a diameter larger than the diameter of the opening communicating with the ``!nti common pipe.

(Function) In the present invention, when the closed 1'1 membrane portion deteriorates, this closed uj
The membrane part ruptures at the fragile part for rupture. The pieces that fall off due to the breakage have a larger diameter than the diameter of the opening communicating with the treatment instrument insertion conduit, so they do not fall into the medical instrument.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

Figures 1 to 3 relate to the first embodiment of the present invention.
The figure is a cross-sectional view 1fIi showing the frame, FIG. 2 is a side view showing the entire endoscope, and FIG. 3 is a sectional view showing the frame with the obturator membrane part removed.

As shown in FIG. 2, the endoscope 1 includes an operating section 2 and an 1liI! The insertion portion 3 has a length of l. At the rear end of the operating section 2, an eyepiece section 2a is provided. Further, a light guide cable 2b extends laterally from the operation section 2.

In addition, the operation section 2 is provided with a place for forceps etc.
An insertion port body 5 is provided for entering Ti. This pusher body 5 communicates with a treatment device insertion channel 6 provided inside the insertion section 3. The tip of this treatment shell insertion channel 6 is installed on the tip side of the insertion section 3. The distal end portion 7 is opened at the distal end thereof, and the distal end of the treatment instrument 4 inserted through the treatment instrument insertion channel 6 can be led out from the distal end of the distal end constituent portion 7.

Further, a frame body 8 for keeping the treatment instrument insertion channel 6 airtight from the outside is detachably attached to the insertion mortar body 5.

The distal end of the distal end component 7 is provided with an observation window and an illumination window, an objective lens system (not shown) is provided inside the observation window, and an illumination lens (not shown) is provided inside the illumination window. It is being A distal end surface of an image guide (not shown) is arranged at the imaging position of the objective lens system. This image guide is attached to the insertion section 3. It is inserted into the operating part 2,
The rear end face faces an eyepiece (not shown) provided in the eyepiece portion 2a. The object image formed by the objective lens system and transmitted by the image guide can be enlarged and observed by the eyepiece. Further, a light guide (not shown) is connected to the rear end of the illumination lens. This light guide is inserted into the insertion section 3. Operation unit 2, light guide cable 2
The large sword end is inserted into the light guide cable 2b.
It is connected to the light guide connector provided at the end of the G.

As shown in FIG. 1, the frame 8 is made of an elastic material such as a soft plastic material and is formed into a substantially cylindrical shape. A chain membrane portion 9 (11) is formed on the outer end side of the cylindrical portion. A slit h 10 is formed in the obturator membrane portion 9 at the central portion thereof, through which a treatment instrument (not shown) or an insertion portion of a treatment instrument such as a dissection instrument is inserted in an airtight manner. Further, an annular groove portion 12 is formed in the cylindrical portion on the inner end side of the frame body 8, and the annular groove portion 12 fits in the flange portion 11 of the insertion mortar body 5 in an airtight manner.

The closing membrane part 9 is provided with a thin walled part 13 as a fragile part on the outer circumferential side of the closing membrane part 9 over almost the entire circumference. On the side of the body 5, there is a round six part 14 through which a treatment instrument or a syringe (not shown) can be inserted, and which is connected to the treatment instrument insertion channel 6.
is provided. Here, the relationship between the diameter φΔ of the thin wall portion 13 and the diameter φB of the round hole portion 14 is φA>φB.

Next, the operation of this embodiment will be explained.

When the operator performs endoscopic escape of a lesion in a body cavity, the operator attaches the frame body 8 to the insertion port body 5 of the endoscope 1 and places the Iia as shown in FIG. Slit Kure 4 to 10. Round hole 14
．． The treatment instrument 4 is inserted in the order of the treatment instrument insertion channel 6 to treat the target lesion, and then the treatment instrument 4 is pulled out. In addition, there is also a method in which several scales of treatment instruments 4 are pushed in alternately to perform treatment.

In this way, when repeating the tli theory such as the treatment tool 4 or the syringe (not shown), the Ig friction force generated between the slit 10 and the treatment tool 4 or the syringe causes the closure membrane part 9 to
A force that tries to tear this closure membrane portion 9 acts. In particular, the thin wall portion 13, which is weak in terms of strength, cannot withstand the applied force, and the filler portion 9 of the closing membrane portion 9 begins to deteriorate first. As a result, in Figure 1, a
3, the closure membrane portion 9 is torn at the thin portion 13, as shown by the dashed line or as shown in FIG. At this point, as mentioned above, the diameter φΔ of the thin wall portion 13,
Since the relationship with the diameter φB of the round six part 14 is φA>φB, the fallen piece 15 is received and stopped by the upper surface 16 of the round hole part 14, and the treatment provided on the endoscope 1 The tool will not fall into the insertion channel 6.

In FIG. 3, the obturator membrane part 9 falls off while the treatment instrument 4 is inserted into the slit 10. In this case, too, when the treatment instrument 4 is inserted, the fallen piece 15 touches the upper surface of the round hole part 14. 16
Since the receiver is stopped, only the treatment instrument 4 is inserted into the channel 6.

Furthermore, when the treatment instrument 4 is removed, the Ni fallen pieces 15 remain attached to the treatment instrument 4 and are taken out together with the treatment instrument 4, so that the fallen pieces 15 do not fall into the channel 6. This also applies to the case of inserting and removing a syringe.

As described above, according to this embodiment, even if the open chain membrane portion 9 falls off, the fallen piece 15 will not fall into the body via the endoscope 1, making it extremely safe.

Moreover, since a part of the closing membrane part 9 falls off after one or several uses, the frame 8 cannot be reused and must always be replaced with a new one.

Therefore, the operator always uses a new frame 8, which increases the accuracy of examinations and treatments performed using medical instruments such as an endoscope 1 using this frame 8, and reduces the risk of infectious diseases. No more worries.

FIGS. 4 and 5 relate to a second embodiment of the present invention; FIG. 4 is a perspective view of the frame, and FIGS. 51 and 5 are sectional views of the frame.

In this embodiment, a perforation mouth portion 18 partially provided with cuts 17 is provided as a weakened portion over substantially the entire outer circumference of the closure membrane portion 9 .

Then, the diameter φC of the sewing machine opening 18 and the diameter φB of the round hole 14
The relationship is φC>φB.

According to this embodiment, the fragile portion can be easily formed by the sewing machine opening 18.

Other functions and effects of the configuration 1 are the same as those of the first embodiment.

FIG. 6 is a sectional view showing a frame of a third embodiment of the present invention.

In this embodiment, the closure membrane part 9 includes a disc-shaped first closure crotch part 19 having a slit 10, etc.
It consists of two parts: a ring-shaped second closing membrane part 20 provided on the outer periphery of the membrane. +fQ One first closure membrane part and the second closure membrane part 20 are combined with a resin adhesive 21 to form 43 01 chain membrane parts 9, and the joint part forms a weak part. There is. 11 also describes the diameter φB of the joint portion and the diameter φ of the round hole portion 14.
The relationship with B is φB>φB.

In this embodiment, the resin adhesive 21 is
The parts connected by the first closure membrane part 19 begin to deteriorate, with the result that the first closure membrane part 19 falls off.

Other functions and effects of the configuration 1 are the same as those of the first embodiment.

In this embodiment, the resin adhesive 21 may be water-soluble. When this water-soluble adhesive is used, rather than deteriorating due to repeated insertion and removal of treatment tools or syringes, etc., it is caused by the liquid when delivering the liquid with the syringe.
The applicability of the joint portion deteriorates, and the closing membrane portion 9 falls off. The effects in this case are similar to those in the first embodiment.

7 and 8 relate to a modification of the third embodiment, and FIG. 7 is a sectional view showing the frame body, and FIG. 8 is an explanatory view showing how the frame body is submerged in water. It is.

As shown in FIG. 7, the frame body 40 of this example has an insertion opening body 5.
A first frame 41 that fits into the first frame 41 and a second frame 4 that is joined to the top of the first frame 41 with a water-soluble adhesive 45.
It consists of two bodies. First frame 41 and second frame 42
are each provided with a closing membrane portion 44 having a slit 43.

When this frame body 40 is immersed in water to wash the endoscope 1 after use, as shown in FIG.
is melted, and the first frame 711 and the second frame 42 are separated into two pieces. Therefore, it cannot be reused.

In this way, in this example, the frame body 40 becomes unusable after one use and is disposable, but a new frame body 40 is always used, and there is no need to worry about the obturator membrane part 44 falling off or sensitization syndrome. There is no.

FIG. 9 is a sectional view showing a frame of a fourth embodiment of the present invention.
Ru.

In this embodiment, in the frame 8 in the first embodiment, there is no round six part 14 below the closed VI membrane part 9, and there is no round six part 14 below the closed VI membrane part 9.
The run section 11 is open. The relationship between the opening diameter φE and the thin wall diameter φΔ of the flange portion 11 is φA>φE.

On the actual flow side T, the IIR pieces that have fallen off due to the thin wall portion 13 are stopped on the surface 22 of the flange portion 11 .

The other functions and effects of Structure 1 are the same as those of the first embodiment.

In addition, the second. The configuration of this embodiment can also be applied to the third embodiment, and similar effects can be obtained.

Note that the present invention is also applicable to electronic endoscopes.

In this electronic endoscope 11f, a solid-state image element is provided in place of the image guide at the imaging position of the objective lens system at the distal end of the insertion section. A universal cord extends from the operating section of this electronic family celebration It, and a connector connected to the video processor is provided at the end of this universal cord. A monitor is connected to this video processor.

The solid-state camera 8! The output signal of the element is from the insertion section and the operation section.

The video signal is manually inputted to the video processor via a signal line inserted through the universal cord and processed, and the video signal from this video processor is input to the monitor.
The subject image is displayed on this monitor. Further, the operation section is provided with, for example, a bay operation knob, an air/water supply switching button, a suction button, an inductor operation lever, and a treatment instrument insertion port.

Furthermore, the present invention can also be applied to medical instruments other than endoscopes.

[Effects of the Invention 1] As explained above, according to the present invention, the closed gr1 intestine of the frame is provided with a breakable brittle which has a diameter of 5 mm larger than the diameter of the opening communicating with the treatment pipe of the medical device. Since a part is provided, there is an effect that even if a part of the frame falls off due to deterioration, the fallen piece will not fall from the frame into the medical instrument.

[Brief explanation of drawings]

Figures 1 to 3 (regarding the first embodiment of the present invention; Figure 1 is a sectional view showing the frame, Figure 2 is a side view showing the entire endoscope, and Figure 3 is a closed view). FIGS. 4 and 5 are cross-sectional views showing the frame with the membrane part falling off, and FIGS. 4 and 5 relate to the second embodiment of the present invention. FIG. 6 is a sectional view showing the frame of the third embodiment of the present invention, FIGS. 7 and 8 relate to a modification of the third embodiment, and FIG. 7 shows the frame. The cross-sectional view, Figure 8, shows how the frame separates in water! The explanatory drawings, FIG. 9, are a sectional view showing a frame of a fourth practical example of the present invention, and FIG. 10 (also a sectional view showing a conventional frame). 5... Insertion port body 9 ... Closing membrane part 13 ... Phantom interior 15 ... Fallen piece 8 ... Frame 10 ... Slit 14 ... Round hole part Fig. 4'$5 Fig. 6 Fig. 7 8 Figure 0 4 Figure 9 Figure 10

Claims (1)

[Claims] A frame for a medical device that is provided with an obturator membrane portion having a slit on the outer end side and that can be attached to an insertion port of a treatment instrument insertion conduit in a medical device, the frame body being located closer to the insertion port than the obturator membrane portion. A frame for a medical device, characterized in that a breakable fragile portion having a diameter larger than the diameter of an opening communicating with the treatment instrument insertion conduit is provided in the closing membrane portion.