JP2010183977A - Gas emission mechanism, pressure adjustment mechanism, and drainage collection container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas emission mechanism, a pressure adjustment mechanism, and a drainage collection container for suppressing noise and fluctuation of a liquid surface when the gas passing the liquid is emitted from the liquid. <P>SOLUTION: The drainage collection container 10 includes: a pressure adjustment mechanism 20 which has a reservation part 21, an air introduction part 22 for introducing air in water W reserved in the reservation part 21, a porous body 24 placed in an air emission scheduled area in a liquid surface scheduled part of the water reserved, and a suction pressure read pipe channel 23 linked to the reservation part above and below the liquid surface scheduled part and adjusts the suction force of a suction means by head pressure of the water W reserved; and a drainage collection part 30 for reserving drainage. The drainage collection part 30 is connected to the suction means in parallel to the pressure adjustment mechanism 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a gas release mechanism capable of suppressing sound generated when gas passes through a liquid and is released from the liquid, and a pressure adjustment mechanism and a drainage recovery container using the gas release mechanism. .

As is well known, in a gas release mechanism in which gas is passed through a stored liquid and then released into a gas region such as the atmosphere, such as bubbling in the industrial field, medical field, etc., when the gas moves from the liquid to the atmosphere, etc. In some cases, sound and liquid level fluctuations may occur.
The sound generated in such a gas discharge mechanism may cause deterioration of the surrounding environment as noise, and the fluctuation of the liquid level is an obstructive factor when measuring the liquid level.

  For example, in the medical field, the gas release mechanism is used for an inhaler or the like that vaporizes an aqueous solution of the drug by allowing bubbles to pass through the liquid containing the drug, and changes the vaporized drug to a state that can be inhaled by the patient. In some cases, the sound of vaporizing the chemical may cause stress on the person using the inhaler.

Further, in the medical field, as a suction means for removing body fluid such as blood exuding from a living body such as a patient, for example, a low pressure capable of easily adjusting a suction pressure as shown in Patent Document 1 with a hand switch Continuous aspirators are widely used.
On the other hand, in a suction device that connects a drainage bag or the like to a suction means that opens in the wall of an operating room used in a medical facility or the like, and sucks body fluid into the drainage bag, the suction pressure of each opening is adjusted by the suction means Since it is difficult to do so, the drainage collection container is connected to the suction means via the pressure adjustment mechanism, and the suction pressure is adjusted.

  Such a pressure adjusting mechanism is, for example, connected to the air introduction part below the liquid level of the storage part for storing water and connected to the suction source above the liquid level to store the stored liquid, for example, water head pressure (head The suction pressure is adjusted by the pressure), and the suction pressure can be confirmed by the liquid level reading unit communicating with the storage unit.

In such a pressure adjustment mechanism, a large sound is generated when bubbles formed when passing through a liquid move to a gas region such as the atmosphere, and it is difficult to read the liquid level due to shaking of the liquid level. In order to solve such a problem, a flow path communicating from the air introduction unit to the reading unit is formed by a plurality of small holes, perforated plates, sponges, or the like, and the bubbles moving to the reading unit are reduced to make a sound. Attempts have been made to suppress it.
In addition, attempts have been made to suppress liquid level fluctuation by floating a ball or the like on the reading unit.

JP 2003-111833 A

  However, even when a flow path communicating from the air introduction unit to the reading unit is formed by a plurality of small holes, perforated plates, sponges, or the like, and when a ball or the like is floated on the reading unit, the bubbles move to the gas region. It is difficult to sufficiently suppress the sound and fluctuation of the liquid level, and there is a demand for technology to suppress the harmful effects that occur when bubbles formed by the gas released into the liquid move to the gas region. It had been.

  The present invention has been made in consideration of such circumstances, and a gas release mechanism and pressure capable of suppressing the occurrence of sound and liquid level fluctuation when the gas that has passed through the liquid moves to the gas region. An object is to provide an adjusting mechanism and a drainage collection container.

In order to solve the above problems, the present invention proposes the following means.
The invention described in claim 1 includes a storage part in which liquid is stored and a gas introduction part that introduces gas into the liquid stored in the storage part, and the gas introduced from the gas introduction part contains the liquid. A gas release mechanism configured to be discharged after passing, wherein the gas is scheduled to pass when being discharged from the liquid in a liquid level planned portion for positioning the liquid level of the stored liquid. An interface subdividing member for subdividing an interface where the liquid is in contact with the gas region is provided in the planned gas release region.

  According to the gas discharge mechanism according to the present invention, the interface in which the liquid in the reservoir is in contact with the gas region is subdivided by the interface subdividing member, so that the bubbles when the bubbles move from the liquid to the gas region in the interface subdividing member As a result, the generation of a loud sound when moving from the liquid to the gas region is suppressed. Further, since the bubbles are not transferred to the gas region, the liquid level is prevented from shaking.

In this specification, the interfacial subdividing member refers to a material that subdivides bubbles passing therethrough by subdividing the interface between a liquid and a gas region such as the atmosphere. For example, each air bubble is subdivided finely. Of course, even if the gas forming the bubbles is continuous in the interface subdividing member, the size of the gas at the time of disappearance is subdivided by division or the like.
Further, the interface segmentation by the interface segmentation member is a case where both the length and width of the channel when bubbles pass through the interface are reduced (for example, including a circular shape), and the channel at the interface. Even when a long part is continuously formed, the case where the gas that has passed is divided or the unit that disappears is subdivided is also included.

  Invention of Claim 2 is the gas discharge | release mechanism of Claim 1, Comprising: The said interface subdividing member is provided from the said liquid level scheduled part in the said storage part to the connection part with the said gas introduction part. It is characterized by.

  According to the gas discharge mechanism according to the present invention, since the interface subdividing member is provided from the liquid surface planned portion to the connection portion with the gas introducing portion, it is possible to suppress bubbles from leaking from the interface subdividing member to the liquid side. The bubbles can be easily retained in the interface subdividing member and transferred to the interface portion.

  A third aspect of the present invention is the gas release mechanism according to the first or second aspect, wherein the interface subdividing member is a porous body.

  According to the gas discharge mechanism according to the present invention, since the interface subdividing member is a porous body, the passing bubbles are subdivided three-dimensionally and recombination of the subdivided gas is suppressed.

  Invention of Claim 4 is a pressure adjustment mechanism provided with the gas discharge | release mechanism of any one of Claims 1-3, Comprising: The said storage part is above the said liquid level plan part. Connected to the suction means, the suction means is connected to the gas introduction part via the liquid stored in the storage part, and the side of the gas introduction part to which the gas is introduced is opened to the atmosphere, The suction force of the suction means is adjusted by the head pressure of the stored liquid.

  According to the pressure adjusting mechanism according to the present invention, the suction pressure of the suction means can be easily adjusted by the head pressure of the liquid while suppressing the generation of the sound when the bubbles move to the gas region and the fluctuation of the liquid level. .

  A fifth aspect of the present invention is the pressure adjusting mechanism according to the fourth aspect of the invention, characterized in that the storage section and a suction pressure reading line communicating with the upper part and the lower part of the liquid level scheduled part are provided. To do.

  According to the pressure adjusting mechanism according to the present invention, the suction pressure reading pipeline communicates with the storage portion in the vertical direction, and the interface subdividing member is not disposed inside the suction pressure reading pipeline. The liquid level of the inner liquid is suppressed to be small by the interface subdividing member, and the suction pressure can be easily read without being difficult to read by the interface subdividing member.

  The invention described in claim 6 comprises the pressure adjusting mechanism according to claim 4 or claim 5 and a drainage recovery part for storing the drainage, wherein the drainage recovery part is connected to the suction means. It is connected in parallel with the pressure adjusting mechanism.

  According to the drainage recovery container according to the present invention, the drainage can be easily sucked into the drainage recovery part with a predetermined suction pressure.

According to the gas release mechanism according to the present invention, since the bubbles made of the gas flowing in from the gas introduction part are subdivided by the interface subdividing member, the sound when the bubbles move from the liquid to the gas region, the fluctuation of the liquid level Occurrence can be suppressed.
Further, according to the pressure adjusting mechanism according to the present invention, the suction pressure can be easily adjusted.
Further, according to the drainage collecting container according to the present invention, the periphery of the patient can be quieted and the suction pressure can be easily read by the suction pressure reading pipeline.

It is a figure showing a schematic structure of an inhaler concerning a 1st embodiment of the present invention. It is a perspective view which shows the outline of the drainage collection container which concerns on the 2nd Embodiment of this invention. It is a longitudinal cross-sectional view which shows the outline of the pressure adjustment mechanism of the drainage recovery container which concerns on 2nd Embodiment. It is a fragmentary longitudinal cross-section which shows the modification of the drainage collection container which concerns on 2nd Embodiment.

The inhaler according to the first embodiment of the present invention will be described below with reference to FIG.
The inhaler 1 includes a drug solution storage part (storage part) 2 in which a drug aqueous solution (liquid) M containing a drug to be inhaled is stored, a lid member 3, an air supply pipe (air introduction part) 4, an inhaler A tube 5 and a porous body 6 are provided.

The chemical liquid storage unit 2 is made of, for example, a transparent glass or plastic container, and the upper part is reduced in diameter to have a substantially conical shape, and the opening 2A is opened at the tip.
The lid member 3 is made of, for example, a resin such as rubber, and is sealed between the opening 2A and the lid member 3 in a state of being inserted into the opening 2A. The cover member 3 is formed with two through holes, a first hole 3A and a second hole 3B, and is inserted into the opening 2A via the first hole 3A and the second hole 3B. Therefore, the chemical storage unit 2 can be distributed to the outside.

The air supply pipe 4 is inserted into the first hole 3A formed in the lid member 3, one end is opened below the porous body 6 in the chemical liquid storage section 2, and an air supply source (not shown) is provided at the other end. It is connected via an air supply tube 4A.
The suction pipe 5 is inserted into a second hole 3B formed in the lid member 3, one end is opened above the porous body 6 in the chemical liquid storage part 2, and the other end is a suction port communicating with the suction mask 7. Tube 5A is connected.

  The porous body 6 is formed of, for example, a sponge-like foamed polyurethane having a porosity of about 95% or more, and is formed so as to be substantially in contact with the inner periphery of the drug solution storage unit 2. The lower part is disposed in the liquid surface planned portion and the lower part is immersed in the aqueous drug solution M, and an interface where the aqueous drug solution M and the atmosphere (gas region) are in contact with each other is formed inside the porous body 6. As the cell size of the porous body 6, for example, when the liquid is water or the like and the gas is air, (6 to 16 cells / 25 mm) is preferable, but other porosity and cell size may be used. Needless to say.

  The porous body 6 is composed of a three-dimensionally extending wall portion having a large number of holes, and subdivides the interface between the aqueous drug solution M and the gas region so that, for example, the unit area of the interface partitioned by the wall portion is made fine. Thus, air bubbles released into the aqueous drug solution M are subdivided in the porous body 6 and the subdivided bubbles disappear in the porous body 6.

Next, the operation of the inhaler 1 will be described.
1) Air supplied from an air supply source (not shown) is supplied into the aqueous drug solution M to form bubbles.
2) Bubbles formed in the aqueous drug solution M enter the porous body 6 after rising in the aqueous drug solution M.
3) Bubbles that have entered the porous body 6 are subdivided within the porous body 6 while moving through the porous body 6, and the aqueous drug solution M is vaporized when the subdivided bubbles disappear.
4) The vaporized medicine moves to the inhalation mask 7 via the inhalation tube 5 and the inhalation tube 5A.

According to the inhaler 1, the bubbles formed by the air released into the drug aqueous solution M disappear and the drug aqueous solution M is vaporized in the porous body 6, so that the bubbles in the drug aqueous solution M move to the gas region. The generation of sound and the shaking of the aqueous drug solution M is suppressed.
As a result, the chemical aqueous solution M can be stably vaporized.

Next, a second embodiment of the present invention will be described with reference to FIGS.
2 and 3 are diagrams showing a schematic configuration of the drainage recovery container 10.
The drainage collection container 10 sucks body fluid discharged from a living body such as a patient with a predetermined suction pressure by a suction means (not shown) provided on the wall surface of an operating room, for example, and collects the drainage. It is.

  The drainage recovery container 10 includes, for example, a casing 11 having a rectangular parallelepiped shape and formed of integral transparent plastics or the like, and includes a pressure adjusting unit (pressure adjusting mechanism) 20 that adjusts the suction pressure of the suction means, A drainage recovery unit 30 for storing liquid is provided, and the suction pressure of the drainage recovery unit 30 can be adjusted by the pressure adjustment unit 20.

The pressure adjustment unit 20 includes, for example, a storage unit 21, an air introduction unit (gas introduction unit) 22, and a suction pressure reading pipeline 23, and a porous body 24 is disposed in the storage unit 21.
The storage part 21 is connected to the air introduction part 22 so that the lower part can be circulated, and guides air into the storage part 21, and the suction pressure reading conduit 23 is connected to the upper part and the lower part so that it can circulate. The upper part of the reservoir 21 is a gas compartment (gas region) 25.

  The gas compartment 25 has a suction opening 12 at the top, and a suction tube 13 is connected to the suction opening 12 so that the air in the gas compartment 25 is sucked into the suction means.

  The porous body 24 is composed of a wall portion having a plurality of pores made of, for example, sponge-like foamed polyurethane or the like and extending in a three-dimensional manner. It extends from the gas section 25 above the planned surface portion) to the connection portion between the storage portion 21 and the air introduction portion 22.

  As a result, the lower part of the porous body 24 is immersed in water and the upper part is in contact with the gas compartment 25, and bubbles entering from the lower part of the porous body 24 are subdivided in the porous body 24 and disappear. Yes. The porosity and cell size of the porous body 24 are the same as those in the first embodiment.

  The suction pressure reading pipe line 23 is provided with a scale on the side, and as a substitute characteristic of the suction pressure, the suction pressure can be confirmed by reading the height of the water stored in the storage portion 21.

  The drainage recovery unit 30 includes a first recovery unit 31, a second recovery unit 32, and a water seal 33, and the first recovery unit 31, the second recovery unit 32, and the water seal 33 can be circulated in this order. The drainage inlet 31A of the first recovery unit 31 is connected to a drainage tube 31B that collects drainage from a living body such as a patient.

The first collection unit 31 is partitioned by the second collection unit 32 and the partition plate 34, and the first collection unit 31 and the second collection unit 32 can be circulated only above the partition plate 34.
The second recovery part 32 is partitioned by a water sealing part 33 and a partition plate 35, and the second recovery part 32 and the water sealing part 33 can be distributed only above the partition plate 35.

The water sealing portion 33 is divided into two regions that can be circulated only in the lower portion by a partition plate 36 formed from above, and the upper portion of the region opposite to the second recovery portion is connected to the gas compartment 25. The pressure adjusting unit 20 and the drainage collecting unit 30 are connected in parallel to the suction unit.
The two regions constituting the water sealing portion 33 are formed such that the cross-sectional area (cross-sectional area) on the side close to the suction means (right side in FIG. 3) is larger than the cross-sectional area on the side far from the suction means (left side in FIG. 3). In the normal suction state, water is held in the lower part, and the gas section 25 has a negative pressure rather than the patient side, so that the water surface closer to the suction means is higher.

  When the patient's negative pressure increases, such as after the patient coughs or sneezes, the water-sealed water rises in the left thin channel, but the water head pressure due to the difference between the left and right liquid levels is the same as that of the gas compartment 25. When the pressure difference between the recovery part 31 and the second recovery part 32 becomes equal, the rise of the water seal water on the left side of the water seal part 33 stops, whereby the first recovery part 31 and the second recovery part 32 from the gas compartment 25 are stopped. Inflow of air to is blocked.

Next, the operation of the drainage collection container 10 will be described.
1) A suction means (not shown) is operated to suck the air in the gas compartment 25 in the drainage recovery container 10 from the suction opening 12.
2) When air in the drainage recovery container 10 is sucked from the gas section 25, the gas section 25 becomes negative pressure, and a suction pressure that flows into the drainage recovery container 10 from the air introduction part 22 and the drainage inlet 31A is formed. Is done.
3) When there is a drainage to be sucked, the drainage is sucked into the drainage recovery unit 30 from the drainage inlet 31A, and the drainage is stored in the order of the first recovery unit 31 and the second recovery unit 32. The
4) On the other hand, when the air sucked into the gas section 25 from the air introduction part 22 passes through the water W in the storage part 2, the suction pressure at the tip of the drainage tube 31B is adjusted to a predetermined pressure.
5) The air introduced from the air introduction part 22 becomes bubbles when moving from the air introduction part 22 to the storage part 21, enters the porous body 24 in the storage part 21 and rises while being subdivided by the porous body 24. And disappears at the interface in contact with the gas compartment 25 in the vicinity of the planned water surface.
Further, in this case, water W is connected to the lower part of the storage part 21, the lower part of the air introduction part 22, and the lower part of the suction pressure reading pipe line 23, but the air introduced from the air introduction part 22 is porous. The air is blocked by the body 24 or is prevented from entering the suction pressure reading pipe 23 by other means, and the porous body 24 is raised.
6) On the other hand, since the water W communicates with the reservoir 21, the air inlet 22, and the lower part of the suction pressure reading pipeline 23, the suction pressure reading with the reservoir 21 is performed even when air flows from the air inlet 22. The pipe line 23 has the same water level. As a result, the water level in the reservoir 21 can be read by the suction pressure reading pipe line 23, and as a result, the suction pressure can be confirmed.

  According to the drainage recovery container 10, since the air introduced from the air introduction part 22 is subdivided and disappears in the porous body 24, the generation of sound when bubbles are released from the water W is suppressed. Moreover, the shaking of the water surface is suppressed. As a result, stable suction can be performed by the drainage collection container 10 in a quiet state.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.
In the above-described embodiment, the case where the gas release mechanism is applied to the inhaler 1 and the drainage recovery container 10 has been described. However, for example, various devices such as a device for cleaning by bubbling liquid or dissolving gas can be used. The present invention can be applied to other devices, and may be applied to fields other than the medical field such as the industrial field. In the above embodiment, the case where the gas is air and the liquid is the pharmaceutical aqueous solution M or the water W has been described. However, other gas may be used as the gas, or the chemical aqueous solution M, water may be used as the liquid. Other than W, for example, water W added with an additive such as an antifoaming material or a pigment may be used.

In the above embodiment, the interface subdividing member is a porous body 6 or 24 such as a sponge. However, the interface between the liquid and gas is subdivided, such as an aggregate of fibers or a hollow thin tube. Other than the possible porous body may be used.
Moreover, although the case where the porous bodies 6 and 24 which are interface subdivision members are arrange | positioned over the whole liquid level scheduled part was demonstrated, the area | region which all the bubbles pass when it transfers to a gas area among liquid level scheduled parts It is possible to arrange an interface subdividing member such as a porous body only.

Further, in the drainage recovery container 10, the case where the porous body 24 extends from the liquid level planned portion to the connection portion with the air introduction portion 22 has been described. For example, as shown in FIG. The partition plate 21A is disposed so as not to enter the suction pressure reading pipeline 23. For example, the interface subdividing member 24A may be disposed so as to include the liquid level planned portion, or the partition plate 21A in FIG. Instead of this, for example, a member 21 </ b> B that suppresses the movement of bubbles made of a porous body or the like may be used to suppress the entry of bubbles from the air introduction unit 22 into the suction pressure reading pipeline 23.
Further, the air flowing from the air introduction part 22 is sucked by shifting the positional relationship between the communication part of the storage part 21 and the air introduction part 22 and the communication part of the storage part 21 and the suction reading pipe line 23 back and forth or up and down. Needless to say, the reading line 23 may not enter.

  Since the bubbles released from the liquid are allowed to pass through the interface subdividing member, and subdivided and transferred to the gas region, the sound generated when the bubbles move to the gas region can be suppressed, so that the fluctuation of the liquid level can be suppressed. Industrially available.

M drug aqueous solution (liquid)
W Water (liquid)
1 Inhaler 2 Chemical solution reservoir (reservoir)
4 Air supply pipe (air introduction part)
6 Porous body (interface subdivided member)
10 Drainage collection container 20 Pressure adjustment part (pressure adjustment mechanism)
21 Reservoir 23 Suction pressure reading line 25 Gas compartment (gas region)
30 Drainage recovery unit

Claims (6)

A reservoir for storing liquid; and
A gas introduction part for introducing gas into the liquid stored in the storage part,
A gas release mechanism configured to be released after the gas introduced from the gas introduction part passes through the liquid,
Of the liquid level planned portion where the liquid level of the stored liquid is located, the interface where the liquid is in contact with the gas region is subdivided into the gas release planned region where the gas will pass when released from the liquid. A gas release mechanism comprising an interface subdividing member. The gas release mechanism according to claim 1,
The interface subdividing member is provided from the liquid level planned portion in the storage portion to a connection portion with the gas introduction portion. The gas release mechanism according to claim 1 or 2,
The gas release mechanism, wherein the interface subdividing member is a porous body. A pressure adjustment mechanism comprising the gas release mechanism according to any one of claims 1 to 3,
The reservoir is connected to the suction means above the liquid level planned portion,
The suction means is connected to the gas introduction part via the liquid stored in the storage part, and the gas introduction side of the gas introduction part is opened to the atmosphere, and the stored liquid head A pressure adjusting mechanism that adjusts the suction force of the suction means by pressure. The pressure adjustment mechanism according to claim 4,
A pressure adjustment mechanism, comprising: a suction pressure reading conduit communicating with the storage part above and below the liquid level scheduled part. A pressure adjusting mechanism according to claim 4 or 5, and
A drainage collecting part for storing drainage,
The drainage recovery container is characterized in that the drainage recovery unit is connected in parallel with the pressure adjusting mechanism with respect to the suction means.

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