KR101968150B1 - A single medical infusions solution glass or plastic bottle complex with sanitary plug and 3 way connector structure - Google Patents

Abstract

The present invention relates to an infusion bottle complex equipped with an infusion discharging device having an inner stopper and a three-way valve at a discharge portion of the infusion bottle. More specifically, a discharge passage is formed in the infusion discharge device. The discharge passage is closed with the inner stopper located inside the infusion bottle, and the inner stopper is pushed by a pusher contained in the infusion discharging device to open the discharge passage. The three-way valve is mounted to a bottom of the infusion discharging device to prevent foreign substances from being introduced or generated by connection additional drugs from the outside to be supplied to the infusion bottle or the human body. As a result, secondary infection can be prevented and the stopper can be sanitary.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a glass or plastic infusion bottle having a sanitary stopper and a three-way valve,

[0001] The present invention relates to a liquid infusion bottle equipped with a liquid stopper provided with an inner stopper and a three-way valve at a discharge portion of a liquid infusion bottle. More particularly, , The drain valve is opened by pushing the inner stopper by pushing the inner stopper and the additional solution is connected from the outside by attaching the three-way valve to the lower part of the liquid drainage device so as to be supplied to the sap bottle or the human body The present invention also relates to a glass or plastic infusion bottle complex having a hygienic cap and a liquid discharge device composed of a three-way valve, which prevents foreign matter from entering or being generated.

In general, the sap solution is parenterally administered intravenously, such as a mixture of water and an electrolyte, a carbohydrate, an amino acid solution, a glucose solution, a plasma liquid, a texturizer, a red blood cell suspension, or the like, It says.

In addition, the supply of the liquid is performed by mounting a set of liquids in a container containing the liquid, and supplying the stored liquids by a predetermined amount. A liquid discharging portion including a rubber pad is formed in the container (liquid bottle or the liquid pack) containing the liquid, A set of liquids is attached to the part, and the liquid stored in the container is supplied. The fluid set includes a fluid ejection unit coupled to a rubber stopper of a fluid outlet of the fluid container and discharging the fluid, and a fluid injection device connected to the fluid outlet unit and the fluid tube to inject the fluid into the human body.

The apparatus for extracting liquid includes a drip chamber; The fluid infusion device includes a needle hub to which a needle is fixed and a connection pipe to be connected to the needle hub, and a needle needle is inserted into a vein of a patient, and a needle hub to which the needle is fixedly fixed is fixed to the connection tube, The patient is injected with the sap. In addition, a three-way valve is provided below the liquid infusion line, and is used for mixing other medicinal solutions or for collecting fluid flowing along the flow path.

In order to hygienically manage the liquid container, it is required to be provided in an enclosed structure. In the case of an infusion bottle made of glass or plastic, a part of the lower part is opened and a cap for providing hermeticity with a rubber stopper or rubber packing To seal the liquid container. In the case of such a liquid container, a set of liquid is used in combination with a stopper, and in a coupling method, most part of the rubber material is passed through a needle or a set of the liquid set to allow the liquid to be discharged.

However, since the above-described method uses a needle or a tip portion exposed to the outside to penetrate the rubber stopper, foreign pollutants may be transmitted to the liquid inside the container, causing contamination of the fluid. In the course of penetrating the rubber stopper, There is a problem that the rubber powder flows into the blood vessel together with the liquid to cause secondary infection.

Korean Registered Patent No. 10-1362821 (Registered on Feb. 28, 2014, hereinafter referred to as "Prior Art Document 1") discloses a liquid container having a cap formed with a spike insertion hole. In the prior art document 1, the inlet of the liquid receiver is sealed with a synthetic resin stopper, and a rubber plug mounting hole is formed in the stopper, and a spike inserting hole and a rubber plug are mounted on the stopper. And to insert the spike of the liquid set into the spike insertion hole of the cap.

In the prior art document 1, since the synthetic resin zipper is formed and the through hole is formed in advance , it is possible to prevent the generation of the rubber dust, which is the rubber residue in the coupling process of the liquid set, but the sponge or needle Therefore, there is a risk that foreign contaminants may still flow into the liquid container.

Japanese Laid-Open Patent Publication No. 1994-190055 (published on July 12, 1994; hereinafter referred to as 'Prior Art 2') presented a set of serial fluid administration. The above-mentioned prior art document 2 is a serial injection set comprising a liquid container containing a medicament in which a medicament is mixed alone or a combination of medicines, and a liquid tube provided with an injection needle at one end, and is provided in the liquid container so as to protrude toward the liquid tube Wherein the protrusion is formed of a rupture member and the connection part is made of a flexible member, and when the protrusion part is broken through the connection part, the protrusion part and the connection part covering the protrusion part are provided at the other end of the liquid- The medicament is supplied to the liquid tube. According to the prior art document 2, the liquid is discharged due to the breakage of the protrusion, not the injection needle, and the breakage of the protrusion is also performed through the connection part surrounding the protrusion, so that contamination during breakage can be prevented. However, in the prior art document 2, since the projecting portion is broken to open the fluid discharge pathway, debris may be generated during the breakage process, so that the powdery form in the wasted portion may flow into the blood vessel and cause a disease caused by foreign matter or a secondary infection problem.

Therefore, it is necessary to study a cap structure of a liquid container having a new structure which is more hygienic for opening the discharge channel of the liquid container and can suppress the occurrence of scum in the opening process.

Korean Registered Patent No. 10-1362821 (Registered on Feb. 28, 2014): a liquid container having a cap formed with a spike insertion hole Japanese Laid-Open Patent Publication No. 1994-190055 (published on July 12, 1994):

In order to solve the problems of the prior art as described above,

A liquid discharging device having a discharging flow path is installed in the discharging portion of the liquid bottle, the discharging flow path is closed by an inner cap located inside the liquid bottle, and when used, the inner cap is pushed upward by the push rod located inside the liquid discharging device, And a three-way valve is integrally formed at the lower part of the liquid discharge device to supply additional medicines to be delivered to the liquid bottle or to be supplied to the blood vessel together with the liquid, And to provide a hygienic fluid bottle complex capable of blocking the introduction of foreign substances during the drug injection process.

In order to solve the above problem, the liquid infusion bottle complex having the liquid-

A fluid infusion bottle comprising a infusion bottle in which a fluid is stored and a discharge part is formed at a lower end thereof and a fluid discharge device mounted on a discharge part of the infusion bottle to seal or infuse the infusion bottle, The apparatus comprises: a fixed body, which is watertightly coupled to an open discharge portion at the bottom of the infusion bottle, and in which a discharge flow passage is formed on a vertical axis; An inner cap disposed at an upper end of the insertion portion and having an expanded surface having an extended surface for restricting the insertion of the discharge path, ; A plunger disposed coaxially with the discharge passage of the fixture and having an upper portion inserted into the lower end of the discharge passage of the fixture to press the inner cap upward; A three-way valve disposed at a lower portion of the plunger and having a vertically opened vertical flow path and a horizontally branched horizontal flow path formed therein, the valve having a valve for interrupting the opening and closing direction of the flow path; And a corrugated pipe having an upper end coupled to the fixture and a lower end coupled to the upper side of the three-way valve to enclose the inside of the three-way valve while varying the length thereof in the vertical direction.

The fixture includes: a fixed bushing that is watertightly mounted to an open discharge portion at the bottom of the infusion bottle; And a liquid discharge pipe coaxially coupled to the fixed bushing and having an exhaust flow path formed therein, and an upper surface of the bellows pipe integrally coupled to an outer surface protruding to a lower portion of the fixed bushing.

The inner stopper may be made of a foamed resin or a porous material, or may be used as a buoy to ascertain the level of the fluid when it is separated from the discharge channel by forming the inside as a hollow portion.

In addition, the inner stopper may further include a hemispherical inner groove formed in the bottom surface of the insertion portion, so that the top end of the stopper may be inserted into the inner groove to press the shaft upward.

In addition, the three-way valve may have an inclined upper end enclosed in the corrugated pipe so as to prevent the upper flow path inlet of the three-way valve from being clogged by the plunger.

In addition, the fixed body has an air inlet formed on a side surface exposed to the outside, and an air channel is formed in the air inlet. The air channel communicates with the discharge channel to communicate with the inside of the bottle via the discharge channel, And is configured so as to be communicated with the inside of the vial bottle, and the filter can be installed on the air flow path to filter the incoming air.

The liquid infusion bottle complex having the liquid infusion apparatus of the present invention by the above-

The immersion fluid having the discharge flow path is attached to the inflow port of the infusion bottle, the inflow flow path is closed through an inner stopper located in the infusion bottle, and when used, the inner stopper is pushed by the pushrod positioned inside the infusion device, Administration.

This is a method of connecting a set of liquids to a liquid bottle, and it is possible to prevent the secondary contamination due to the penetration of the rubber dregs by preventing the generation of rubber dregs in the opening and closing process by applying the opening and closing method instead of the rubber stopper penetration method.

In addition, the inner stopper for opening the discharge passage and the pushrod may be disposed in a space which is blocked from the outside, so that the inflow of contaminants from the outside can be blocked during the connection of the liquid set.

In addition, it is possible to use a liquid bottle made of plastic or glass, so that it can be safely transported or stored.

In addition, the liquid discharge device may be configured such that a three-way valve is integrally formed at the lower part to inject additional medicines into a sap bottle or to easily connect the patient to a drug insertion or other device, It becomes possible to provide a useful device which enables the use of the device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A and FIG. 1B are a perspective view and a cross-sectional view showing a transfusion bottle composite according to a preferred embodiment of the present invention;
2 is a sectional view showing another embodiment of the fixture according to the present invention;
3 is a sectional view showing an example in which an inner stopper according to the present invention is used as a buoy.
4 is a sectional view showing an example in which an inner groove is formed on the bottom surface of the inner stopper according to the present invention.
5 is a sectional view showing an example in which an upper end of a three-way valve according to the present invention is formed as an inclined surface.
6A and 6B are cross-sectional views illustrating a fixture with an air inlet according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are shown enlarged or reduced from the actual size for the sake of clarity of the present invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises", "having", or "having" are used to specify that there is a feature, a number, a step, an operation, an element or a combination thereof disclosed in the specification, It should be understood that the foregoing does not preclude the presence or addition of other features, numbers, steps, operations, elements, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as commonly used and predefined terms should be construed to have meanings consistent with their contextual meanings in the relevant art and are not to be construed as ideal or overly formal in meaning unless expressly defined in the present application .

FIG. 1A is a perspective view showing a transfusion bottle complex according to the present invention, and FIG. 1B is a sectional view.

As described above, the infusion bottle complex 1 according to the present invention comprises a infusion bottle 2 and a fluid-discharging device 3 mounted on a discharge portion of the infusion bottle.

The infusion bottle 2 is made of glass or plastic, which is a rigid material that is not deformed by external pressure. On one side, an open vent is provided for discharging the stored fluid. The discharge portion may have a thread formed on the inner surface thereof or may be formed with a locking protrusion on the outer surface thereof to firmly couple the liquid discharge device. In order to improve watertightness, a packing is interposed between the discharge portion of the liquid bottle and the liquid discharge device .

The liquid discharge device (3) seals the liquid bottle at the time of storage and opens the stored liquid at the time of use.

The liquid discharge device 3 includes a fixing body 10, and the fixing body is coupled to the liquid bottle discharging part by various coupling methods such as screwing or tight fitting. The fixture has a tubular shape, and on the outer surface thereof, a threaded portion, a protrusion or a groove coupling means corresponding to the discharge portion of the bottle is formed, and a discharge flow passage penetrating in the vertical direction is formed therein. The fixing member may extend a portion of the lower portion vertically downward so that one end of the corrugated tube, which will be described later, is integrally joined to the extended side surface.

As shown in FIG. 2, the fixture 10 is assembled with a tubular fixed bushing 12, which is watertightly coupled to a discharge port of the infusion bottle, and a liquid discharge pipe 13 is coupled to the fixed bushing 12, And the lower side of the discharge pipe may protrude and protrude from the fixed bushing 12. In this configuration, one end of the corrugated pipe 50 may be integrally coupled to the side surface of the liquid discharge pipe 13 extending downward. The fixed bushing 12 and the liquid discharge pipe 13 constituting the fixture 10 can be connected to each other by waterproof bonding by inserting a packing into an adhesive, a spiral connection or an adhesion site. In addition, Can be provided.

An inner stopper (20) is mounted in the discharge passage (11) formed in the fixture (10) or the fluid discharge pipe (13) from the upper end to the lower end to close the discharge flow path. The inner stopper 20 may be divided into an insertion portion 21 and an extension portion 22.

The insertion portion 21 is composed of a rod which is inserted axially through the upper end of the discharge passage 11 formed in the fixed body or the liquid discharge pipe to close the discharge passage. The inserting portion 21 is formed in a truncated conical shape so as to improve the adhesion with the inner surface of the discharging flow path when inserting the inserting portion 21 or to make the material elastically deformed when inserting the material into the discharging path, And can be variously formed for water tightness.

The extension portion 22 is formed in an expanded shape at the upper end of the insertion portion 21 to limit the depth of the inner stopper into the discharge passage. The expanded form may be in the shape of a sector or in various other forms.

As shown in FIG. 3, the inner stopper 20 may be provided as a floating material or a structure. When the inner stopper 20 is separated from the discharge pathway, the inner stopper 20 may be used as a buoy to ascertain the level of the sap. For example, the inner stopper 20 may be made of a foamed resin or a porous material, or may be used as a buoy when it is formed as a hollow portion and separated from the discharge passage. At this time, the inner stopper has an easy color to be distinguished from the outside, so that the water level can be easily confirmed.

A part of the plunger (30) is disposed in the discharge passage (11) formed in the fixture or the liquid discharge pipe in the axial direction.

The plunger 30 is formed to have a diameter smaller than the diameter of the discharge passage 11 so that it can move without friction on the discharge passage while smoothly discharging the liquid through the space between the plunger and the discharge passage, When the external force is applied upwardly, the internal stopper 20 is moved along the discharge passage so that the inner stopper 20 mounted on the discharge passage upper side is pushed upward to be removed from the discharge passage 11.

In order to prevent the plunger 30 from being introduced into the upper liquid bottle through the discharge channel, it is preferable that the plunger has a diameter larger than that of the discharge channel.

4, a hemispherical inner groove 211 is further formed on a bottom surface of the insertion portion 21 of the inner cap 20 on the axial center line of the inner cap. The inner groove 211 is a groove for inserting the upper end of the push rod. Preferably, the bottom face of the insert, which is the bottom of the inner stopper, is formed as a curved surface. When the inner stopper 20 is pressed by the push rod 30, the inner groove 211 guides the push rod 30 about the axis to induce the force to act in the axial direction so that the inner stopper 20 Thereby facilitating the removal.

The inner groove 211 may be formed in various shapes, such as a polygonal truncated pyramid shape, in addition to the hemispherical shape.

Next, the three-way valve 40 is positioned at a predetermined distance from the lower end of the fixture 10. The three-way valve 40 includes a vertical flow path 411 formed in the vertical pipe portion 41, a horizontal pipe portion 42 containing a horizontal flow path 421 horizontally branched in the middle of the vertical flow path, And a valve 43 for interrupting the opening and closing of the flow path. A stopper 44 is detachably mounted on the lower end of the vertical pipe portion and the end portion of the horizontal pipe portion, respectively, In addition, various known coupling means may be applied to the end of the vertical tube portion 41 and the end of the horizontal tube portion 42 such that threads are formed on the end side surfaces thereof and are easily engaged with other members by screwing, It is possible to make an easy connection with the device.

The spacing between the fixture 10 and the three-way valve 40 is set to be longer than the length of the inner stopper 20 inserted into the discharge passage 11 so that the inner stopper is removed according to the movement of the stopper It is desirable that the upper end of the plunger is not detached from the discharge passage 11 of the stationary body when the plunger 30 descends at the maximum. When the spacing distance is formed, the plunger 30 can always move up and down on the same axis as the discharge channel 11 of the stationary body. Thus, when the plunger is removed from the discharge flow channel, It can be prevented from being damaged by pressure. However, the length of the corrugated pipe is extended, so that the plunger is removed from the stationary body discharge passage, and the discharge flow passage is sufficiently secured, so that the liquid discharge can be stably performed. In addition, the pusher itself can be formed in a tubular shape, and the pusher can be easily discharged even if the pusher is not detached from the discharge channel.

A corrugated pipe 50 may be positioned between the fixture 10 and the three-way valve 40. The corrugated pipe 50 encloses the push rod 30, the upper end thereof is integrally connected to the lower portion of the fixing body 10, and the lower end thereof is integrally connected with the upper portion of the three-way valve 40 to seal the inside thereof.

The corrugated pipe 50 may be made of a stretchable material in addition to the corrugated shape as shown in an area that allows the pusher 30 located therein to be gripped from the outside. However, if the structural strength is low, the inner plunger may be easily broken due to the external force action during storage or transportation. Therefore, it is made of a material having a certain strength and provides strong structural strength in the lateral direction, It is preferable to have a corrugated pipe shape provided with flexibility.

The three-way valve 40 may further extend the length of the upper portion of the vertical tube portion 41 to integrally connect the corrugated tube 50 and allow a portion of the upper end of the vertical tube portion 41 to be inserted into the corrugated tube 50 have. At this time, the connection between the corrugated pipe and the three-way valve or the fixing body may be integrally formed by fusion, watertightly joined by screwing, or integrally formed by an attachment method by an adhesion means.

The upper end of the vertical pipe portion 41 of the three-way valve inserted into the corrugated pipe 50 may be formed as an inclined surface 412 as shown in FIG. When the inclined surface 412 is formed as the inclined surface 412, the push rod 30 separates the inner stopper 20 and then descends in the corrugated tube 50, so that the head portion of the lower portion of the push rod is hooked on the upper end of the inclined surface 412 of the vertical pipe portion. It is possible to prevent the inlet of the vertical flow path 411 from being closed by the head of the plunger 30.

Of course, the inlet of the vertical flow passage 411 is formed on the side of the vertical pipe portion 41 of the three-way valve 40 so that the liquid can be introduced into the interior through the side inlet.

In addition, the three-way valve vertical pipe portion may be constructed by attaching an extension pipe without extending its length to the upper side. That is, the extension pipe may be integrally coupled with the corrugated pipe, and the lower end of the extension pipe and the upper end of the vertical pipe portion of the three-way valve may be detachably coupled.

6A and 6B, the fixture 10 of the present invention may further include an air inflow portion 14 for introducing external air. The air inlet (14) is formed on the side exposed to the outside of the fixing body and an air flow passage (15) is formed therein. The air passage 15 is formed separately from the discharge passage 11 and communicates with the inside of the infusion bottle (FIG. 6A). The air passage 15 is formed only inside the air inflow portion protruded to the side, communicates with the discharge passage 11, And may be provided in a form communicating with the inside of the sap bottle (Fig. 6B).

Therefore, the infusion bottle can inflow external air through the air flow path of the inflow portion by the amount of the discharged infusion fluid, thereby filling the infusion bottle inner space, thereby preventing negative pressure from being generated in the infusion bottle and stopping the infusion.

In addition, the filter 16 is mounted on the air channel 15 to filter out foreign substances from the air to hygienically manage the inside of the liquid bottle, and when not in use, a cap can be installed to prevent contamination .

As shown in the drawing, the air inlet portion 14 has a flow tube portion 141 protruding from the side of the stationary body, a protruded flow tube portion formed with threads on the outer surface thereof, a cover tube portion 142 formed on the threaded portion of the flow tube portion, And a filter may be interposed between the inner end of the cover tube and the end of the flow tube. This makes it easy to replace the filter, so that it can be recovered and then sterilized and washed and then reused.

A method of using the infusion bottle complex according to the present invention constructed as described above will be described.

First, the cap 44 at the lower end of the vertical pipe portion 41 of the three-way valve is opened and connected to the liquid set.

Next, the corrugated pipe 50 is pressed to hold the plunger 30 and push it upward.

The pusher 30 moved upward moves the inner stopper 20 attached to the discharge passage 11 of the stationary body upward to be removed from the discharge passage.

The detached inner cap 20 floats to facilitate the confirmation of the level of the liquid.

The liquid stored in the liquid infusion bottle 2 through the discharge channel 11 opened by the removal of the inner cap 20 is supplied to the corrugated tube 50.

The liquid collected in the corrugated tube 50 flows into the inside of the three-way valve through the upper end of the vertical tube portion 41 of the three-way valve 40, and then supplied to the human body through the set of the liquids mounted on the three-

In addition, when a mixed drug other than the liquid is injected, the plug 44 mounted on the end of the horizontal tube 42 of the three-way valve 40 may be opened and the container for storing the mixed drug may be connected to supply the drug to be mixed.

In this case, when the mixed drug is supplied to the infusion bottle and is diluted with the infusion solution and then supplied to the human body, the valve 43 of the three-way valve that vertically communicates with the upper portion is rotated to connect the horizontal tube portion 42 and the upper portion of the vertical tube portion 41 And then the mixed drug is supplied to the infusion bottle. When the supply of the mixed medicine is completed, the valve 43 of the three-way valve may be rotated to communicate with the upper and lower portions of the vertical tube portion, and the mixed drug storage container of the horizontal tube portion may be separated.

Alternatively, when the mixed solution storage container is connected, the valve 43 of the three-way valve is rotated so that the vertical flow path 411 in the vertical tube portion and the horizontal The flow path 421 is all communicated to supply the solution of the solution bottle through the vertical pipe portion and simultaneously the mixed drug of the mixed drug storage container can be supplied to the human body through the three-way valve.

In addition, it is possible to provide a hygienic fluid bottle complex, for example, by connecting the fluid bottle and the line in various ways so that the drug is administered.

1: fluid bottle complex
2: infusion bottle
3: fluid discharge device
10: Fixture
11: exhaust flow passage 12: fixed bushing
13: liquid discharge pipe 14: air inlet
15: air flow path 16: filter
141: flow tube portion 142: cover tube portion
20: inner stopper
21: insertion part 22: extension part
211: Intra home
30: Pusher
40: Three-way valve
41: vertical tube portion 42: horizontal tube portion
43: valve 44: plug
411: Vertical flow path 412: Inclined surface
421: horizontal channel
50: corrugated tube

Claims (6)

And a liquid discharging device for storing the liquid and having a discharging part formed at the lower end thereof, and a liquid discharging device mounted on the discharge part of the liquid bottle for sealing or discharging the liquid bottle,
The liquid discharge device (3)
A fixed body (10) which is watertightly coupled to an open discharge portion at the bottom of the infusion bottle and in which a discharge flow passage (11) is formed on a vertical axis;
A rod insertion portion 21 which is located inside the liquid bottle and is axially coupled through an upper end of the stationary substance discharge flow passage 11 and a surface extending integrally with the upper end of the insertion portion so as to restrict insertion of the discharge passage An inner cap 20 composed of an extension part 22;
A plunger 30 disposed coaxially with the discharge passage 11 of the stationary body and having an upper portion inserted into the lower end of the discharge passage 11 of the stationary body to press the inner stopper 20 upward;
A valve 43 is provided in the branch portion to intermittently open and close the flow path. The vertical flow path 411 is disposed at a lower portion of the plunger 30 and opens vertically, Way valve (40);
And a corrugated tube 50 having an upper end connected to the fixing body 10 and a lower end connected to the upper side of the three-way valve 40 to enclose the inside of the three- ≪ / RTI > The method according to claim 1,
The fixture (10)
A fixed bushing (12) that is watertightly mounted to an open discharge portion below the infusion bottle;
And a liquid discharge pipe (13) coaxially coupled to the fixed bushing and having a discharge passage (11) formed therein, and an upper end of the bellows pipe (50) is integrally coupled to an outer surface protruding to a lower portion of the fixed bushing ≪ / RTI > The method according to claim 1,
Wherein the inner stopper (20) is made of a foamed resin or a porous material, or is formed as a hollow portion and floated when separated from the discharge channel, so that the inner stopper (20) is used as a buoy to check the level of the fluid. The method according to claim 1,
Wherein the inner stopper (20) is further provided with a hemispherical inner groove (211) on the bottom surface of the insertion portion (21) so that the top end of the inner stopper (20) is inserted into the inner groove and pressed upward from the center of the shaft. The method according to claim 1,
The three-way valve (40) has an inclined surface (412) formed at an upper end of the corrugated tube (50) to prevent clogging of the upper flow path inlet of the three-way valve by the plunger. The method according to claim 1,
The fixed body 10 has an air inlet 14 formed on the side exposed to the outside and an air passage formed in the air inlet 14 so that the air passage communicates with the discharge passage 11, Wherein the filter is formed so as to communicate with the inside of the bottle or to be communicated with the inside of the bottle, and a filter (16) is mounted on the air passage to filter the incoming air.

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