JPS5914837A - Forcept cock of endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a forceps plug for an endoscope for closing an insertion port of a channel for inserting a treatment instrument such as forceps.

The endoscope is provided with a treatment instrument insertion channel for inserting treatment instruments such as forceps), and this treatment A# channel is communicated with the insertion port provided in the operating section. ing. Therefore, for example, a treatment instrument such as a snare may be inserted into the body cavity from this insertion port through the treatment instrument insertion channel, a polyp in the body cavity may be grasped with the distal end side of the snare, and a high-frequency current may be applied to the snare. ↓
Yes, this polyp can be removed by burning it out.

By the way, when performing the above-mentioned treatment, air is sent through the air and water nozzle provided at the tip of the insertion section of the endoscope.
It is necessary to create an appropriate space inside the body cavity, but if the insertion port is open at this time, air and dirt in the body cavity will leak out through the insertion channel.

For this reason, in the conventional device, a forceps plug is provided in the insertion port to close the gap, thereby preventing leakage of the airborne contaminant ring within the body cavity.

However, in the conventional forceps plug, the main body is made of metal, and the metal part is directly exposed to the operating section, so in the unlikely event that the operator's hands or the like come into contact with the forceps plug during the above procedure. When this happens, the high frequency current leaking from the snare is transmitted to the forceps plug 9 via the insertion section and the metal member in the operation section of the endoscope, and is further grounded from the forceps plug via the operator. As a result, the operator's hands and the like may generate heat, and there is a risk of burns or the like.

This invention was made based on these circumstances, and its purpose is to increase safety so that even if the operator touches the forceps plug, he or she will not suffer burns, etc. Our objective is to provide forceps plugs for endoscopes.

That is, the present invention is characterized in that a forceps plug having high frequency insulation properties is provided at the insertion opening of the treatment instrument insertion channel.

An embodiment of the present invention will be described below based on FIG. M1 and FIG.

1 in FIG. 1 is the endoscope body. The endoscope main body 1 consists of an operating section 2 and an insertion section 3, and a universal cord 4 is connected to the operating section 2. Further, the tip end component 7 is connected to the tip of the flexible tube section 5 of the insertion section 31 via a curved tube section 6, and the curved tube section 6 is connected to the tip of the flexible tube section 5 by an angle operation knob (not shown) provided on the operation section 2. The bending can be controlled remotely. Furthermore, a treatment instrument insertion channel 8 for inserting a treatment instrument such as forceps is provided in the endoscope body 1 from the operating section 2 to the distal end component l of the insertion section 3. The base end communicates with an insertion port 9 provided in the operating section 2, as shown in FIG. That is, M
2 is added to explain the inside of the operating section 2 near the entry port 9. In FIG. 2, 10 is a tube constituting the treatment instrument insertion channel 8. The branch pipe bodies 12 are airtightly connected via the connecting ring 11tl. This branch pipe body 12 is the tube 10
It is composed of a substantially linear main passage 13 that communicates with the main passage 13, and a branch passage 14Vc branched from the main passage 13, and a substantially cylindrical mouth receptacle 15 is attached to the base end opening of the main passage 130. It is being

The opening portion body 11 is airtightly connected to the opening portion receiver 15Vc via a ring packing 16 fitted on the outer periphery thereof. This insertion port body 11 is airtightly installed in a hole 18 via a ring packing 19, and the opening end of the opening protrudes from the hole 18. By doing so, the insertion port 9 is configured. Further, a tubular damper member 20 is fitted into the enlarged diameter portion on the distal end side of the insertion port body 1r, and the damper member 20 is elastically deformable in the axial direction.

A forceps plug 21 is fitted into the insertion opening 9, and at the same time, the lower end of the forceps plug 21 is fitted into the cover 2a. In the case of this embodiment, the forceps plug 21 is integrally molded from silicone rubber, which is a high-frequency insulating material and has elasticity, and is fitted into the insertion opening 9 at its center. 2 slits in the part
2.

On the other hand, a Y-glue 2 for line connection is connected to the branch passage 14 of the branch pipe body 12.
3, one end of the suction chip 24 is airtightly connected, and the other end is led to the universal cord 4Vc and connected to a suction source i, not shown.

Further, the branch pipe body 12 is connected to a cylindrical body 25 inserted into the operating section 2.
The cylindrical body 25 is fixed to a part thereof by set screws 2g and 17, and an inner cover 18.11 is attached to the outer periphery of the cylindrical body 25.
9 is fitted, and these inner covers 1! II, 2m is covered with a rubber cladding tube 30. Furthermore, 31
゜sz, ss are ring gaskets provided between the inner cover 28 and the cover 21 and between the inner cover 28.19 and the cylindrical body 25, and 34 is a ring gasket provided between the cylindrical body 25 and the base end 3 of the insertion portion.
A connecting ring 3a that connects the insertion portion 3 with the insertion portion 3 is a rubber stopper member that covers the outer periphery of the connecting portion of the insertion portion 3.

6- In addition, in the above configuration, the insertion port body 11,
The mouth part receiver 15, the branch pipe body 12, the cylindrical body 25, the connecting ring 34, the proximal end 3s of the insertion part, the flex, the blade (none of which are shown), etc. that constitute the insertion part 3 are made of metal. Not even.

As shown in FIG. 1, the snare 36 is a 7'cJ 6U treatment odor, and this snare 36 is inserted from the slit 22 of the forceps plug 21 through the treatment instrument insertion channel 8'lr, thereby causing The snare wire 37 allows the polyp in the body cavity A to be grasped. Moreover, s8 is a snare wire that operates the extrusion and retraction of the snare wire 31.

Further, 39 is a high frequency current generator, and this high frequency current generator 39 is connected to the snare operating unit 3BVC via a cable 4° on one side, and a cable 41 on the other side.
The return electrode plate 42 is connected to the patient's body wall via the electrode plate 42 . Note that 43 is the ground of the high frequency current generator 39.

According to the endoscope having such a configuration, the snare 86 is inserted through the treatment instrument insertion channel 8, and the polyp X in the body cavity A is grasped by the snare wire 371C at the tip thereof. Then, by flowing a high frequency current from the high frequency current generator 8g to the snare J6,
It is capable of incinerating polyp X.

It goes without saying that the excised polyp X is also discharged out of the body cavity A through the treatment instrument insertion channel 8 and the suction tube 24t.

By the way, in the endoscope of this configuration, the forceps plug 21 is integrally molded with silicone rubber, so even if the operator performs MR on the forceps plug 21 during the above procedure, the high frequency current leaking from the snare 36 will be transferred to the operator. It is not grounded through.

That is, since silicone rubber has insulating properties against high frequency current, the high frequency current that conventionally flows from the snare 36 to the operator via the metal member in the endoscope body 1 can be reliably insulated by the forceps plug 2. It is something. Therefore, even if the operator touches the forceps plug 21, the contact portion will not generate heat, and it is possible to reliably prevent burns to the operator and improve safety.

In the above-mentioned embodiment, the forceps plug 21 was integrally molded from Cricon rubber, but the present invention is not limited to the above embodiment, and the forceps plug 44 is shown in FIG.
may be configured.

That is, in this case, the forceps plug main body 45 is formed of a conductive metal as in the conventional case, and the forceps plug main body 4
5 is removably covered with a high frequency insulating member 46 such as urethane rubber, and the same effect can also be obtained in this manner. In addition, an elastic plug 48 with a hole 47 in the center and an elastic plug 50 with a slit 49 in the center are superimposed inside the forceps plug main body 45, and these are tightened by a pair of rings 51 and 52. It is clamped and fixed by pressing from above using a fixing ring 53. Further, the forceps plug main body 45 is screwed onto the insertion port body 9-17, and similarly, the fixing ring 53 is attached to the forceps plug main body 4.
It is designed to be screwed on with a 6tlc screw. Sarall [54
is a ring gasket that ensures airtightness between the forceps plug body 45 and the insertion port body 17.

As explained above, the present invention is characterized in that a forceps plug having high frequency insulation properties is provided at the insertion opening of the treatment instrument insertion channel.

Therefore, even if the surgeon touches the forceps plug, high-frequency current will not flow to the surgeon through the forceps plug.
It is possible to prevent burns to the operator and improve safety.

[Brief explanation of the drawing]

FIG. 61 and FIG. 2 show an embodiment of the present invention.
The figure is a side view of the entire endoscope, FIG. 2 is a partially enlarged cross-sectional view of the operating section, and Figure #13 is a cross-sectional view of the vicinity of the forceps plug showing another embodiment. DESCRIPTION OF SYMBOLS 1... Endoscope main body, 8... Channel for inserting a treatment tool, 9... Insertion port, 21.44... Forceps plug. Applicant's agent Patent attorney Takehiko Suzue 10- Figure 1 Figure 2

Claims (3)

[Claims] (1) A forceps for an endoscope having a channel for inserting a treatment instrument such as forceps, characterized in that a forceps plug having high frequency insulation is provided in the insertion opening of the channel for inserting the treatment instrument. plug. (2) The forceps plug for an endoscope according to claim 1, wherein the forceps plug is integrally molded from silicone rubber. (3) The forceps plug has an electrically conductive forceps plug body.
The forceps plug for an endoscope according to claim 1, characterized in that it is constructed by being covered with a covering made of a high frequency insulating material.