JPH04803Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a forceps plug for an endoscope for suctioning, liquid feeding, and inserting treatment tools such as forceps through a channel.

[Conventional technology]

When using an endoscope forceps plug without suctioning out dirt or mucus inside the body cavity,
A device that cuts off the communication between the suction tube and the channel so that a liquid such as a medicinal solution can be reliably delivered into the body cavity using a syringe is known as, for example, Japanese Utility Model Application No. 59-183204. ing.

This has a cylindrical body that communicates with the channel in the operation part of the endoscope and has a suction tube connected to the midway part, and an inlet body made of an elastic material is removably inserted into this cylindrical body. The distal end of the body presses tightly against the bottom of the cylindrical body to cut off communication between the channel and the suction tube. A flange is provided on the opening edge of the cylindrical body, and an engaging portion that engages with the flange is integrally provided on the inlet body to prevent the inlet body from accidentally falling off from the cylindrical body. The distal end of the syringe is inserted into this inlet body, and a medicinal solution or the like can be delivered into the body cavity through this inlet body and channel.

[Problem that the invention attempts to solve]

With conventional forceps plugs, when the tip of the syringe is attached to the inlet body and the syringe is moved in the radial direction when feeding liquid, that is, when the axis of the syringe is tilted with respect to the axis of the inlet body, the elasticity The inlet body formed by the body may deform in the radial direction, causing communication between the suction tube and the channel, or the syringe becoming caught.
Force is likely to be applied in the axial direction, and the engaging portion of the inlet body may come off the flange of the cylindrical body, causing the inlet body to separate from the cylindrical body together with the syringe.
In particular, the directionality of the operating section of an endoscope is not constant when it is inserted into a body cavity.
It is difficult to align the syringe with the axis of the inlet body, and the syringe is often tilted relative to the inlet body, which may cause the inlet body to come off along with the syringe, so care must be taken when delivering liquid. The reality is that we are paying attention.

In addition, in order to eliminate the above-mentioned inconvenience,
If the inlet body is press-fitted into the cylinder, it becomes difficult to attach and detach the inlet body to the cylinder, and the inlet body made of an elastic body may be damaged.

This idea was made with attention to the above-mentioned circumstances, and allows the syringe attached to the forceps plug body to be tilted without impairing the ease of attaching and detaching the forceps plug body to the cylinder provided in the operating section of the endoscope. To provide a forceps plug for an endoscope that blocks communication between a suction tube and a channel even when the syringe is pulled out, and prevents the forceps plug from coming off at the same time when a syringe is pulled out.

[Means and actions for solving problems]

This invention is based on the cylindrical body 9 provided in the endoscope body 1.
A forceps cork body 16 made of an elastic body is attached to cut off the communication between the suction tube 15 and the channel 8 and a syringe 26 is attached thereto, and a locking portion 25 is provided on the upper end side of the forceps cork body 16. When the syringe 26 is attached to the forceps body 16, the forceps body 16 is elastically deformed and the inner wall of the cylindrical body 9 and the forceps body 16 are engaged with each other.

〔Example〕

Hereinafter, each embodiment of this invention will be described based on the drawings.

1 to 3 show a first embodiment. First, the entire endoscope device will be explained with reference to FIG. 3. 1 is an endoscope main body, 2 is an operating section,
3 is an insertion section. A part of the operating section 2 is equipped with a forceps plug 4.
The forceps plug 4 is connected to a suction pump 6 via a suction tube 5.

The forceps plug 4 is constructed as shown in FIGS. 1 and 2 in detail. In other words, 7 is a channel 8 built into the endoscope body 1.
, and a cylindrical body 9 is attached to this base end 7. That is, a small diameter portion 10 is provided at the lower end of this cylindrical body 9, and this small diameter portion 10 is tightly attached to the base end portion 7. This cylinder 9
An opening 11 and a flange 12 are provided at the upper end, and a contact portion 13 consisting of a tapered surface is provided at the proximal end of the inner circumferential surface. and,
A through hole 14 is bored in the side wall of the cylindrical body 9 above the contact portion 13, and a suction tube 15 to which the suction tube 5 is connected is provided in the through hole 14.
The suction pipe 15 passes through the inside of the cylinder 9 and communicates with the channel 8. A forceps plug main body 16 which is inserted through the opening 11 of the cylindrical body 9 configured in this manner is detachably attached thereto. The forceps plug body 16 is made of an elastic material such as rubber or soft synthetic resin material, and has a cylindrical communicating tube portion 1.
7 and a flange-shaped attachment portion 18 integrally provided at the upper end thereof. The communicating cylinder portion 17 is connected to the cylinder body 9.
The cylindrical body 9 is inserted so that a gap g is formed when it is inserted into the
It is formed to have a diameter slightly smaller than the inner diameter of the channel 8, and a communication passage 19 that communicates with the channel 8 is provided at its axis. Further, a tapered inlet portion 20 is provided at the upper end opening of the communication passage 19, and a protrusion 21 is formed on the inner peripheral surface of the small diameter portion of the inlet portion 20. Furthermore, an engaging portion 22 that detachably engages with the flange 12 is provided on the peripheral edge of the mounting portion 18 .

On the other hand, a protrusion 23 is integrally provided on the outer peripheral surface of the communication cylinder part 17 located near the attachment part 18 of the forceps plug main body 16 over the entire circumference, and a convex part 23 is integrally provided on the outer peripheral surface of the communication cylinder part 17 located near the attachment part 18 of the forceps plug body 16. A recess 24 is provided on the surface over the entire circumference. Then, the convex portion 23 and the concave portion 24
A locking portion 25 that locks the cylindrical body 9 and the forceps plug main body 16 is constituted by this. Further, 26 is a syringe for delivering a medicinal solution or the like into the body cavity, and a tapered portion 27 is provided at the tip end of the syringe.

Next, the operation of the forceps plug of the endoscope configured as described above will be explained. When the communication between the channel 8 and the suction tube 15 is interrupted to send liquid into the body cavity, the forceps plug main body 16 is installed in the cylinder body 9 as shown in FIG. That is, when the communicating cylindrical portion 17 of the forceps plug body 16 is inserted into the cylindrical body 9 and the engaging portion 22 of the attachment portion 18 is engaged with the flange 12, the tip of the communicating cylindrical portion 17 is tightly fitted into the contact portion 13. Pressure contact. In this state, the channel 8 and the suction tube 15 are blocked by the forceps plug body 16. Next, as shown in FIG. 2, the tapered portion 27 of the syringe 26 is
When inserted into the inlet portion 20 of the communication tube 17, the protrusion 21 comes into close contact with the tapered portion 27 to ensure a secure connection between the two, and the vicinity of the inlet portion 20 of the communicating cylinder portion 17 is pushed outward in the radial direction. Therefore, when the protrusion 23 provided on the communication cylinder 17 is locked in the recess 24 of the cylinder 9 and the syringe 26 is used to deliver the liquid in this state, the medicinal liquid flows from the communication passage 19 through the channel 8 into the body cavity. The liquid will be pumped inside. At this time, even if the syringe 26 is tilted in the radial direction, that is, even if the syringe 26 is tilted with respect to the axis of the forceps stopper body 16, the forceps stopper main body 16 is moved to the cylindrical body 9 due to the engagement between the protrusion 23 and the recess 24. The liquid does not come off, and the operability of liquid feeding can be improved.

When the syringe 26 is removed from the forceps cork body 16 after the liquid feeding is completed, the communicating cylinder portion 17 of the forceps cork body 16 contracts radially inward due to elastic restoring force, and the convex portion 23
The locked state between the cylindrical body 16 and the concave portion 24 is released, and the state shown in FIG.

Next, the second to sixth embodiments will be described based on FIGS. 4 to 8, and the same components as those in the first embodiment will be given the same numbers and the explanation will be omitted.

First, FIG. 4 shows a second embodiment, in which a recess 24 is provided over the inner peripheral surface of the cylindrical body 9, and a corresponding communication passage 19 of the forceps plug body 16 is provided.
A convex portion 28 is provided over the inner circumferential surface.
With this configuration, when the syringe 26 is inserted, the convex portion 28 is caused by the tapered portion 27.
is pressed radially outward, and the convex portion 28a that inversely projects from the outer circumferential surface of the communicating cylinder portion 17 is locked in the concave portion 24.

FIG. 5 shows a third embodiment, in which a notch 29 is provided across the outer circumferential surface of the communicating cylindrical portion 17 of the forceps plug body 16, which faces the recessed portion 24 provided across the inner circumferential surface of the cylindrical body 9. It was established. With this configuration, when the syringe 26 is inserted, the communicating cylinder part 17 is pushed outward in the radial direction by the tapered part 27, and the upper side 29a of the notch part 29 protrudes and is locked in the recess part 24. will be done.

FIG. 6 shows a fourth embodiment, in which a convex portion 23 is provided over the inner circumferential surface of the cylindrical body 9, and a concave portion is provided over the outer circumferential surface of the communicating cylindrical portion 17 of the forceps plug main body 16 facing thereto. 24, and the operation is the same as in the first embodiment.

FIG. 7 shows a fifth embodiment, in which a recess 24 is provided over the inner circumferential surface of the cylindrical body 9, and a large-diameter portion 30 is provided in the communicating cylindrical portion 17 of the forceps plug body 16 facing the recess 24. It is something that With this configuration, when the syringe 26 is inserted, the large diameter part 30 is pressed against the cylinder body 9 by the tapered part 27, and a part of the large diameter part 30 protrudes into the recess 24 and is locked. will be done. Note that by making the inner circumferential surface of the cylindrical body 9 rough, the frictional resistance against the forceps plug main body 16 is increased, and the forceps plug main body 16 can be prevented from coming off.

FIG. 8 shows a sixth embodiment, in which an inner flange 31 is provided on the opening edge of the cylindrical body 9, and
A convex portion 23 is provided over the outer peripheral surface of the communicating cylinder portion of the forceps plug body 16. With this configuration, when the syringe 26 is inserted, the communicating cylinder part 17 is pushed outward in the radial direction by the tapered part 27, and the convex part 23 protrudes below the inner flange 31 and is engaged. It will be stopped.

[Effect of idea]

As explained above, according to this invention, communication between the suction tube and the channel is maintained even if the syringe is tilted with respect to the axis of the forceps stopper body during liquid delivery, without impairing the attachability of the forceps stopper main body to the cylinder body. This has the effect that the condition can be blocked, and the forceps stopper does not come off at the same time as the syringe, so that the operability of liquid feeding can be improved.

[Brief explanation of the drawing]

Figures 1 to 3 show the first embodiment of this invention, with Figure 1 being a longitudinal cross-sectional side view of the forceps plug before inserting the syringe into the forceps plug, and Figure 2 showing the forceps plug before inserting the syringe. 3 is a perspective view of the entire endoscope device, and FIG. 4 shows the second embodiment of this invention, showing the syringe before and after inserting it into the forceps plug. Vertical side view showing a composite state, No. 5
The figure shows the third embodiment of this invention, and is a vertical side view combining the states before and after inserting the syringe into the forceps plug, and Figure 6 shows the fourth embodiment of this invention. This shows an example, and is a longitudinal side view combining the state before and after inserting the syringe into the forceps plug. FIG. 8 is a longitudinal side view showing a combination of the states before and after inserting the syringe into the forceps plug, and shows the sixth embodiment of this invention. It is a longitudinal side view which synthesize|combines and shows a later state. DESCRIPTION OF SYMBOLS 1...Endoscope body, 7...Proximal end, 8...Channel, 9...Cylinder body, 15...Suction tube, 16...
Forceps plug, 23... Convex portion, 24... Concave portion, 25...
Locking part, 26...Syringe.

Claims (1)

[Claims for Utility Model Registration] (1) A proximal end of a channel provided in the endoscope body, a cylindrical body attached to the proximal end of the channel, and a suction tube attached to the cylindrical body. In a forceps stopper for an endoscope, the forceps stopper body is constituted by a forceps stopper body made of an elastic body that blocks communication with a channel and on which a syringe is attached. A forceps plug for an endoscope, characterized in that a locking portion is provided in which the forceps plug main body and the inner wall of the cylindrical body lock each other when a syringe is attached. (2) The forceps plug for an endoscope according to claim 1, wherein the locking portion is formed by a concave portion and a convex portion.