JPH04336025A - Liquid supplying device for endoscope - Google Patents

Abstract

PURPOSE:To enable a plurality of liquids to be simultaneously used without complicated exchanging/replacing work, and also to enable a plurality of liquids to be selectively supplied by means of one liquid supplying device. CONSTITUTION:A liquid supplying device for an endoscope is provided with a plurality of tanks 22 for storing various liquids 101, 102, a pump 12 for feeding the liquids inside the tanks 22, a feeding tube 7 (7a, 7b, 7c) for feeding the liquids inside the tanks 22 to an endoscope 1 (not shown), and a changeover valve 24 that has been arranged in a prescribed position of this feeding tube 7 for changing over a plurality of liquids supplied by the pump 12 so as to be supplied to the end of the endoscope, and it is so constituted that various liquids can be selectively supplied. And, the delivery pressure of the pump 12 is regulated by means of relief valves 18, 19.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a liquid supply device for an endoscope,
In particular, the present invention relates to the structure of a device for supplying various liquids into an endoscope inserted into a body to be observed.

0002

[Prior Art] Endoscope devices are well known in which an endoscope or electronic endoscope, which is a scope, is inserted into a body cavity or cavity to display an image of the inside of the body to be observed on a monitor. In this endoscope apparatus, various liquids are supplied into the body to be observed. That is, for example, an electronic endoscope has a CCD (Charge), which is a solid-state image sensor, at its tip.
The image of the object to be observed is displayed using this CCD, but at this time, various liquids are used to clean the inside of the object and to make it easier to observe. is supplied.

[0003] The above-mentioned liquid is generally supplied using a syringe, and in this case, the syringe is directly connected to the water supply port 4 of the endoscope 1 and the desired liquid is manually supplied. However, recently, a liquid supply device called a water jet shown in FIG. 4 has also been used. In FIG. 4, an observation window 2 is provided on the distal end surface of the endoscope 1.
, forceps port 3 for introducing treatment instruments such as forceps, and water supply port 4
etc. will be provided. A CCD is disposed in the observation window 2 via an objective lens, etc., and the inside of the object to be observed can be observed and imaged via the CCD, and a treatment instrument insertion channel is formed in communication with the forceps port 3. By inserting forceps or the like into this treatment instrument insertion channel, it is possible to collect tissue within the body cavity.

One end of a feeding tube 7 from the device main body 6 is disposed in the water inlet 4, and the other end of the feeding tube 7 is disposed in a tank 8 in which liquid is stored. A pump tube 11 from a pump 10 housed within the main body 6 is disposed at 8 . The tank 8 contains physiological saline, pigmented water, medical solutions, and the like. According to such a configuration, a predetermined pressure is applied from the pump 10 to the tank 8 via the pump tube 11, and this pump pressure supplies the liquid in the tank 8 to the water supply port 4 of the endoscope 1. be done. Therefore, various liquids can be supplied into the body to be observed from the tip of the endoscope 1, and cleaning with physiological saline, coloring of the affected area with pigmented water, application of medicinal solutions, etc. are possible.

[0005]

[Problems to be Solved by the Invention] However, the conventional liquid supply device for an endoscope described above can only supply one type of liquid at a time, and for example, when both physiological saline and pigmented water are used. In this case, two liquid supply devices shown in FIG. 4 are used, and the attachment of the feeding tube 7 is changed, or tanks 8 containing the respective liquids are prepared, and the tanks 8 are replaced as necessary. Therefore, when using multiple liquids, replacement and replacement work is complicated.
In addition, when two liquid supply devices are used, there is a problem that it takes up space and wastes money.

The present invention has been made in view of the above problems, and its purpose is to make it possible to use a plurality of liquids at the same time without the need for complicated exchange or replacement work, and to use one device. An object of the present invention is to provide a liquid supply device for an endoscope that can selectively supply a plurality of liquids.

[0007]

[Means for Solving the Problems] In order to achieve the above object, a liquid supply (water supply) device for an endoscope according to the present invention includes a plurality of tanks storing various liquids, and a liquid in the tanks. A pump for feeding, a feeding tube for feeding the liquid in the tank to the endoscope, and a feeding tube arranged at a predetermined position of the feeding tube to switch between multiple liquids supplied by the pump. It is characterized in that it is equipped with a switching valve for guiding the liquid to the distal end of the endoscope, and is configured to selectively supply various liquids.

[0008] Furthermore, in the above arrangement, the water supply pressure obtained by the pump can be adjusted using a relief valve.

[0009]

[Operation] According to the above structure, when the water supply switch is turned on, for example, water supply pressure is applied to the plurality of tanks by the pump, and liquid can be supplied from the plurality of tanks. At this time, for example, by operating a three-way stopcock as a switching valve, it is possible to select the liquid supply from one of the multiple tanks, thereby supplying, for example, physiological saline, dye water, etc. to the tip of the endoscope. can do.

[0010] Furthermore, if a relief valve is used in the liquid supply by the above-mentioned pump, the water supply pressure can be accurately set to a predetermined pressure, and the jetting force of the supply water at the tip of the endoscope can be maintained in an appropriate state. be adjusted.

[0011]

[Embodiment] FIG. 1 shows the configuration of a liquid supply device for an endoscope according to an embodiment. As shown in the figure, a pump 12 is provided in a main body 6 together with a motor 14. 14 is connected to a plug 16 via a switch 15. The switch 15 is turned on and off by a foot switch 17. The pump 12 also includes a first
A relief valve 18 and a second relief valve 19 are connected, and pressure gauges 20 and 21 are attached to the rear stages of both relief valves 18 and 19, respectively. Therefore, in the relief valves 18 and 19, the pressure gauge 20,
In the embodiment, the first relief valve 18 is set to a rough pressure value that is safe for the human body, and the second relief valve 19 is used to adjust the pressure. We are trying to make some fine adjustments. According to the first and second relief valves 18 and 19, a part of the pressure air given from the pump 12 is released, and the final pressure is set to, for example, about 3 kg/cm2 and is kept constant. maintained.

On the other hand, in the embodiment, a double tank 22 containing physiological saline 101 and pigmented water 102 is used.
This double tank 22 is equipped with the second relief valve 19.
A pump tube 11 connected to is provided. This double tank 22 includes a tank 22a containing water 101 and a tank 22b containing pigmented water 102, as shown in the figure.
and are connected at the top and sealed. A feeding tube 7 is connected from one tank 22a of the double tank 22.
A is disposed toward the supply port of an endoscope (scope), and a three-way stopcock 24 is attached in the middle of this feeding tube 7a. Also, from the other tank 22b, a feed tube 7
b is arranged up to the three-way stopcock 24, and this three-way stopcock 24
The supply of physiological saline 101 and pigmented water 102 can be selected.

[0013] In the above case, the double tank 22 can be a triple tank or a larger number of connected tanks.
In this case, a similar three-way stopcock 24n is successively installed after the three-way stopcock 24 in the middle of the feeding tube 7a. Thereby, it is possible to simultaneously supply, for example, a medical solution other than the physiological saline 101 and the pigmented water 102. In this way, by using the double tank 22 in the embodiment, the arrangement of the pump tube 11 can be simplified.

FIG. 2 specifically shows the configuration of FIG. 1, in which a main switch 26 is provided on the front of the main body 6, and a relief valve 18 is provided on the top surface to set and adjust the water supply pressure. , 19 are provided with volumes 27 and 28, respectively. And the feeding tube 7a
An adapter 29 attached to the tip of the endoscope 1 is connected to a supply port 30 of the endoscope 1.

According to the above configuration, the main switch 26
When the foot switch 17 is pressed, a predetermined water supply pressure is applied to the double tank 22, and the physiological saline 101 and the pigmented water 102 are brought into a water supply state through the supply tubes 7a and 7b. Here, if the three-way stopcock 24 is connected to the physiological saline side, the physiological saline 101 is supplied to the endoscope 1 through the supply port 30 of the endoscope (for example, an electronic endoscope) 1.
The liquid is supplied to the tip of the endoscope, and is injected into the body to be observed from the tip of the endoscope. In this case, relief valve 1
Since the water supply pressure is adjusted to an appropriate pressure by 8 and 19, the saline 1 has a jetting force that is sufficiently safe for the human body.
01 is injected. On the other hand, when the three-way stopcock 24 is switched to the other side, the pigmented water 102 is now supplied to the tip of the endoscope 1, and two types of liquid can be selected and injected as necessary.

FIG. 3 shows an example in which an independent tank is used instead of a connected tank, and as shown in the figure, a pump tube 11a connected to a relief valve 19 is arranged in a tank 8a similar to the conventional tank. At the same time, a pump tube 11b is also provided in the other tank 8b so as to be connected to the pump tube 11a. And the tank 8
Physiological saline 101 in a, pigmented water 102 in tank 8b
The feeding tubes 7a and 7b are the same as in the case of FIG. Of course, a third tank 8c can also be connected in this case, and this is achieved by adding a pump tube 11c and providing a three-way stopcock 24n. According to such a configuration, a predetermined water supply pressure is applied to each tank 8 from the relief valve 19, and a selected liquid can be guided to the tip of the endoscope 1 by switching the three-way stopcock 24. .

[0017]

As explained above, according to the first aspect of the invention, there are provided a plurality of tanks for storing various liquids, a pump for feeding the liquids in the tanks, and a pump for feeding the liquids in the tanks. Equipped with a feeding tube that feeds liquid to the endoscope and a switching valve that switches between multiple liquids supplied by the pump and supplies them to the end of the endoscope, it selectively supplies various liquids. As a result, multiple liquids can be used at the same time without complicated replacement or replacement work. Moreover, it is now possible to selectively supply multiple liquids with one liquid supply device, without taking up wasted space.
There is an advantage that a liquid supply device capable of supplying liquid at low cost can be obtained.

Further, according to the second aspect of the invention, since the pressure can be adjusted by the relief valve, there is an advantage that the liquid can be injected to the human body safely and in a good condition.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of an endoscope liquid supply device according to an embodiment of the present invention.

FIG. 2 is a perspective view specifically showing the configuration of the embodiment device.

FIG. 3 is a diagram showing another example of a tank and its arrangement state.

FIG. 4 is an explanatory diagram showing a conventional liquid supply device for an endoscope and a distal end portion of an endoscope.

[Explanation of symbols]

1... Endoscope, 2... Observation window, 4... Water supply port, 7, 7a, 7b, 7c... Supply tube, 8, 8
a, 8b, 8c...Tank, 11, 11a, 11
b, 11c...Pump tube, 10, 12
… Pump, 18,19 … Relief valve, 22 …
Double tank, 24... Three-way stopcock, 101... Physiological saline, 102... Pigmented water.

Claims (2)

[Claims] Claim 1: A plurality of tanks storing various liquids, a pump for feeding the liquid in the tank, a feeding tube for feeding the liquid in the tank to an endoscope, and a feeding tube for feeding the liquid in the tank to an endoscope. A switching valve is provided at a predetermined position of the supply tube to switch between the plurality of liquids supplied by the pump and lead them to the distal end of the endoscope, so that various liquids can be selectively supplied. Liquid supply device for endoscopes. 2. The liquid supply device for an endoscope according to claim 1, wherein the water supply pressure obtained by the pump is adjusted using a relief valve.