JPH07250811A - Liquid ejector for endoscope - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a liquid ejecting apparatus for an endoscope capable of appropriately ejecting liquid to a target location and reducing the ejection amount. A pipe-shaped insertion part 13 inserted from a forceps insertion port, a liquid introduction tube 15 provided in the insertion part 13 for introducing a liquid to a subject side, and an ultrasonic wave provided at a tip of the subject side. It is provided between the generating unit 25, the distal end portion of the liquid introducing tube 15 and the ultrasonic wave generating unit 25, is opened only on the subject side, and transmits the ultrasonic vibration from the ultrasonic wave generating unit 25 to the air. And an atomization space 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid ejecting apparatus for an endoscope, which ejects a liquid into the body such as the stomach or small intestine using the endoscope.

[0002]

2. Description of the Related Art Conventionally, in the case of evaluating pigmentation in the body, it is performed by dropping a drug solution (pigment solution) into the body using an endoscope.

As shown in FIG. 4, the dropping of the drug solution into the body is performed from the forceps insertion opening 103 of the endoscope 101 to the forceps hole 10.
5 is carried out by inserting a tubular forceps 107 for injecting the drug solution into the container 5, injecting the drug solution from the tip thereof with a syringe 109, and dropping the drug solution drop by drop at a desired location.

[0004]

However, the conventional method of dropping the drug solution into the body is to inject it from the tip of the tubular forceps 107 with a syringe and drop one drop at a desired location. In order to do so, the surroundings must be dropped many times, and there is a problem that the surplus chemical solution reaches other parts (in the example of FIG. 4B, the liquid 111 flows in the direction of the arrow). End). Also,
Since only the chemical solution is dropped from the upper portion to the lower portion, there is a problem that the chemical solution may not be able to be properly dropped (especially, the upper portion is difficult to drop due to gravity).

The present invention has been made in view of the above circumstances, and an object thereof is to appropriately eject a liquid to a target location,
An object of the present invention is to provide a liquid ejecting apparatus for an endoscope capable of reducing the ejection amount.

[0006]

In order to achieve the above object, the present invention is a forceps for an endoscope which is inserted from a forceps insertion port provided in an endoscope, and is inserted from the forceps insertion port. And a pipe-shaped insertion part that is provided in the insertion part,
A liquid introduction tube that introduces a liquid to the subject side, an ultrasonic wave generator that is provided at the subject side tip inside the insertion portion, and generates an ultrasonic wave, and a tip portion of the liquid introduction tube and the ultrasonic wave generator. And an atomization space which is provided only between the subject and which is opened only on the side of the subject and which transmits the ultrasonic vibration from the ultrasonic generator into the air.

Further, the operation section main body and the flexible tube section connected to the operation section main body, the bending tube section, and the insertion section including the distal end forming section are provided inside the endoscope, and the liquid is supplied to the subject side. A liquid introducing tube to be introduced, an ultrasonic wave generator provided at the subject side tip inside the endoscope and generating an ultrasonic wave, and provided between the tip part of the liquid introducing tube and the ultrasonic wave generator. And an atomizing space which is opened only on the side of the subject and which transmits the ultrasonic vibration from the ultrasonic generator into the air.

[0008]

According to the above construction, the liquid introduced from the liquid introducing tube for introducing the liquid to the subject side is atomized by the ultrasonic vibration generated from the ultrasonic generator in the atomization space provided at the tip of the subject side. It spatters and spouts from the opening. As a result, the liquid can be properly ejected to the target location, and the ejection amount can be reduced. Further, the ejection from the opening is performed in a direction perpendicular to the subject-side end surface of the endoscope. Therefore, it is possible to eject while confirming the target portion with the endoscope.

[0009]

FIG. 1 shows a first embodiment of a liquid ejecting apparatus for an endoscope according to the present invention.

As shown in FIG. 1, the liquid ejecting apparatus 10 for an endoscope according to the first embodiment has an operating portion 11, an insert portion 13 extending from the distal end of the operating portion 11, and an insert portion 13. A liquid introduction tube 15 provided in the inside for introducing the liquid to the subject side
And a syringe-like liquid injecting portion 17 that protrudes to the operator-side wall surface of the operating portion 11 and is connected to the liquid introducing tube 15 in the operating portion 11 and injects a liquid. It is provided with an atomization part 19 for ejecting the liquid injected from 17 into a mist.

The atomizing section 19 is provided at the tip of the liquid introducing tube 15 as shown in FIG. 2, and has a felt section 23 for efficiently atomizing the liquid, and an ultrasonic wave generating unit 25 for generating ultrasonic waves. The atomizing space 27 is provided between the felt portion 23 and the ultrasonic wave generating unit 25 and has an opening 27a on the subject side.

The ultrasonic wave generating unit 25 includes a vibrating plate 25-1 for transmitting ultrasonic waves to the atomizing space 27, a fixed plate 25-2 fixed to the inner wall surface of the insertion portion 13, and a vibrating plate 25-. 1 and a fixed plate 25-2, and includes a vibrating plate 25-1 and a vibrator 25-3 which vibrates ultrasonically by applying a voltage to the fixed plate 25-2. Further, the vibrating plate 25-1 and the fixed plate 25-2
A drive cable 29 is connected to the
3 and the operation unit 11 and is output to the outside, and is connected to a driving device 31 and a power source 33 provided outside.

Next, the operation of the endoscope liquid ejecting apparatus 10 of the first embodiment will be described with reference to FIGS. In addition, here, a case where the chemical solution for pigmentation evaluation is ejected to a target location in the body will be described as an example.

First, as shown in FIG. 3, the operator inserts the endoscope liquid ejecting apparatus 10 of the present embodiment from the forceps insertion opening 103 of the endoscope 101, and ejects the inserted endoscope liquid ejecting device 10. The tip of the device 10 is projected from a forceps outlet (not shown) provided at the subject-side tip of the endoscope 101.

In this state, the operator turns on the power source 33 (see FIG. 1) of the ultrasonic wave generating unit 25, operates the driving device 31 to vibrate the vibrator 25-3, and at the same time injects the liquid medicine into the liquid injection section 17. Inject from. As a result, the chemical liquid is injected into the felt portion 23 through the liquid introduction tube 15 shown in FIG. In the felt portion 23, the surface area of the chemical liquid contacting the atomization space 27 is increased and the chemical liquid is evenly supplied to the atomization space 27.

The chemical liquid supplied to the atomization space 27 flows in the atomization space 27 immediately before or after reaching the vibrating plate 25-1 by ultrasonic vibration of the vibrator 25-3. Fly around and become fine particles. In this way, the drug solution is atomized and ejected from the opening 27a toward the subject.

When the ejection of the chemical solution is stopped, the operator stops the injection of the chemical solution from the liquid injection section 17. As a result, the chemical liquid does not exist in the liquid introduction tube 15 and the felt portion 23, and the ejection of the chemical liquid is stopped. At this time,
If the operator pulls the piston portion of the liquid injecting portion 17 to forcibly suck the liquid medicine existing in the liquid introducing tube 15 and the felt portion 23, the operator can stop the ejection of the liquid medicine more quickly.

A valve (electromagnetic valve) is provided in the opening 27a so that the opening 27a is closed by the valve when the power supply 33 of the ultrasonic vibration unit 25 is shut off.
If the opening 27a is set to be opened by the valve when the power source 33 is turned on, the power source 33 of the driving device 31 is set.
It is possible to control stop / start of the chemical liquid ejection by turning on / off of.

As described above, in the liquid ejecting apparatus 10 for an endoscope of this embodiment, the liquid introduced from the liquid introducing tube 15 for introducing the drug solution to the subject side is atomized at the subject side tip. Since it is atomized by the ultrasonic vibration from the ultrasonic wave generation unit 25 in the working space 27 and is jetted from the opening 27a, the chemical liquid can be jetted appropriately to the target location,
It is possible to reduce the ejection amount.

Further, since the chemical solution is sprayed in the form of mist, it can be sprayed properly even if the target location is the upper surface. Furthermore, since the chemical solution is ejected in a mist form in a direction perpendicular to the subject-side tip surface of the endoscope 101, it can be ejected while confirming the target location with the endoscope 101, and local ejection is also possible. Furthermore, since the drug solution can be properly ejected to the target site, even a side effect-containing substance, which has hitherto been impossible, can be applied by reducing the amount of drug solution used. Furthermore, since the drug solution can be ejected locally, local anesthesia with the drug solution is possible.

Next, a second embodiment of the liquid ejecting apparatus for an endoscope according to the present invention will be described.

The liquid ejecting apparatus for an endoscope of the second embodiment is one in which the liquid ejecting apparatus for an endoscope according to the present invention is directly provided inside the endoscope 101. The endoscope liquid ejecting apparatus according to the second embodiment is the endoscope liquid ejecting apparatus 1 according to the first embodiment.
Since it has the same configuration as 0, the drawing is omitted.

Since the liquid ejecting apparatus for an endoscope of the second embodiment is provided directly on the endoscope 101, it is not necessary to provide the operation section 11 as shown in FIG. In this case, the liquid introduction part 15
The tip of the operator on the operator side is extended to the outer periphery of the operation main body portion for performing the bending operation of the endoscope 101 so that the liquid can be directly injected by the syringe.

As described above, in the liquid ejecting apparatus for an endoscope of the second embodiment, since the liquid ejecting apparatus for an endoscope is directly provided in the endoscope 101, the endoscope of the first embodiment is The same effect as that of the liquid ejecting device can be obtained, and the operability is improved because the inspection of the subject and the ejection of the liquid can be performed with one device.

[0025]

As described above, according to the present invention, ultrasonic waves are generated in the atomization space provided at the tip of the subject side for the liquid introduced from the liquid introducing tube for introducing the liquid to the subject side. Since it is atomized by the ultrasonic vibration from the container and ejected from the opening, the liquid can be ejected properly to the target location, and the ejection amount can be reduced. Further, since the liquid is atomized and ejected, the liquid can be properly applied even on the upper portion, which has been difficult to apply conventionally. Furthermore, since the chemical solution is ejected in a mist form in a direction perpendicular to the subject-side tip surface of the endoscope, it can be ejected while confirming the target location with the endoscope, and local ejection is also possible.

Further, inside the endoscope, a liquid introducing tube for introducing a liquid to the subject side, an ultrasonic generator provided at the tip of the subject side, a tip portion of the liquid introducing tube and the ultrasonic wave. Provided between the generator and the atomization space that is opened only on the subject side and transmits the ultrasonic vibrations from the ultrasonic generator into the air, and introduces the liquid introduced from the liquid introduction tube. Since the liquid is atomized by the ultrasonic vibration from the ultrasonic generator in the atomization space and ejected from the opening, the liquid can be ejected properly to the target location and the ejection amount can be reduced. Is possible. Further, since the liquid is atomized and ejected, the liquid can be properly applied even on the upper portion, which has been difficult to apply conventionally. Furthermore, since the chemical solution is ejected in a mist shape in a direction perpendicular to the subject-side tip surface of the endoscope, it is possible to eject while confirming the target location with the endoscope, and local ejection is also possible. Furthermore, since the inspection of the subject and the ejection of the liquid can be performed with one device, the operability is improved.

[Brief description of drawings]

FIG. 1 shows a first embodiment of a liquid ejecting apparatus for an endoscope according to the present invention.

FIG. 2 is a cross-sectional view of a subject-side tip of the liquid ejecting apparatus for an endoscope shown in FIG.

FIG. 3 is an explanatory diagram when the liquid ejecting apparatus for an endoscope shown in FIG. 1 is inserted into an endoscope.

FIG. 4 is an explanatory diagram showing a conventional method of dropping a drug solution into the body.

[Explanation of symbols]

 10 Liquid Ejection Device for Endoscope 11 Operation Section 13 Insertion Section 15 Liquid Introduction Tube 17 Liquid Injection Section 19 Fog Locking Section 23 Felt Section 25 Ultrasonic Wave Generation Unit (Ultrasonic Generator) 27 Atomization Space 29 Driving Cable 31 Drive 33 Power supply

Claims (2)

[Claims] 1. A forceps for an endoscope inserted from a forceps insertion opening provided in an endoscope, wherein a pipe-shaped insertion portion inserted from the forceps insertion opening, and provided in the insertion portion, A liquid introduction tube that introduces a liquid to the subject side, an ultrasonic wave generator that is provided at the subject side tip in the insertion portion, and generates ultrasonic waves, a tip portion of the liquid introduction tube, and the ultrasonic wave generator. And a space for atomization, which is provided only between the subject side and which transmits the ultrasonic vibration from the ultrasonic generator into the air, and a liquid jet for an endoscope characterized by the following: apparatus. 2. An endoscope provided with an operation section main body and an insertion section composed of a flexible tube section, a bending tube section, and a distal end forming section connected to the operation section main body, the liquid being supplied to the subject side. A liquid introduction tube to be introduced, an ultrasonic wave generator provided at the subject side tip inside the endoscope and generating an ultrasonic wave, and provided between the tip portion of the liquid introduction tube and the ultrasonic wave generator. And an atomizing space that is opened only on the subject side and that transmits the ultrasonic vibrations from the ultrasonic generator into the air, the liquid ejecting apparatus for an endoscope.