JP5473062B2 - Wall suction bag - Google Patents

Description

  The present invention relates to a wall suction bag that is connected to suction means provided on, for example, a wall surface of an operating room and collects drainage.

  Conventionally, it is connected to suction means provided on the wall of the operating room, etc., and a body fluid such as blood accumulated in a body cavity such as the abdominal cavity or chest cavity of the patient is sucked with a predetermined suction pressure, and the drainage is collected. Liquid collection containers are known. Since it is difficult to adjust the suction pressure with the suction means provided on such a wall surface, the suction pressure is adjusted by providing a simple pressure adjusting unit in the drainage recovery container (for example, Patent Documents). 1).

  As shown in FIG. 1, the drainage collection container 100 described in Patent Document 1 includes a liquid collection unit 102 for storing the sucked drainage, and a water seal unit that communicates with the liquid collection unit 102 in a gas flow manner at the top. 101 and a suction pressure setting unit 103 that is installed on the opposite side of the liquid collection unit 102 and communicates with the water sealing unit 101 in gas flow.

The fluid collection unit 102 is provided with a body fluid inlet 108 connected to the patient, and the interior of the chamber is divided into a plurality of fluid collection chambers 110 by a partition wall 109.
The water sealing part 101 is provided with a suction source connection part 104 that is connected to a suction source such as a suction pump. The suction source connection unit 104 communicates with the small chamber 107.
In addition, the suction pressure setting unit 103 has a narrow tube 112 having an opening 111 opened to the atmosphere at the upper end, and a small chamber 113 that communicates in a gas-liquid flow manner near the bottom surface and into which the regulated water 114 is introduced. It plays the role of adjusting the suction pressure to the water column pressure at the height H of the regulated water 114.

Japanese Patent Laid-Open No. 11-178915 (FIG. 2)

By the way, in the suction pressure setting unit 103 of the drainage recovery container 100 as described above, a loud noise is generated when the air bubbles formed when the air passes through the pressure-regulating water 114 shift to the gas region where the air is sucked. At the same time, it has been pointed out that there is a large variation in the liquid level of the regulated water 114.
In order to solve this problem, an attempt is made to provide a porous body in the small chamber 113, and a certain effect is obtained in silencing and suppressing the fluctuation of the liquid level.
However, since air accumulates inside the porous body placed in the pressure adjusting water 114, the water level of the pressure adjusting water rises greatly, and an accurate suction pressure cannot be grasped, which may place a burden on the patient or the like. There is a problem.

  Therefore, the present invention has been made to solve the above problems, and can reduce the sound when bubbles are broken, and can suppress the rise of the water level due to air and can grasp the accurate suction pressure. An object is to provide a wall suction bag.

In order to solve the above problems, a wall suction bag according to the present invention includes a drainage inlet that sucks drainage, a suction port that is connected to suction means and depressurizes a gas region, and an air introduction port that is open to the atmosphere. A drainage collecting part for storing the drained fluid communicated with and sucked into the drainage inlet, and between the drainage collecting part and the gas region communicated with the suction port. A water sealing portion provided in the air inlet, and a pressure adjusting portion that is provided between the air inlet and the gas region and adjusts a suction pressure for sucking the drainage, and in the pressure adjusting portion , air A wall suction bag having a porous body together with pressure-regulating water in an air circulation portion through which the porous body is composed of a wall portion having a plurality of holes and extending three-dimensionally, and the tertiary of the porous body The channel through which air flows in the vertical direction of the originally extending wall has slits, openings, or It is formed a notch.

  With this configuration, the suction port of the housing is connected to the suction means to decompress the gas region, so that the drainage is sucked from the drainage inlet and collected in the drainage recovery unit. At this time, in the pressure adjustment unit, the atmosphere is introduced into the gas region through the regulated water from the air inlet, so that the suction pressure from the drainage inlet is adjusted to a substantially constant pressure. At this time, bubbles are formed by the air passing through the pressure-controlled water. However, since the porous body provided in the pressure-controlled water subdivides and disappears the bubbles, it is possible to eliminate the sound when the bubbles are broken. Furthermore, since air (bubbles) flows along the flow path provided in the porous body, it is possible to prevent air from accumulating inside the porous body and increasing the water level, and to increase the level of the regulated water. Therefore, it is possible to grasp the accurate suction pressure.

  The wall suction bag of the present invention has a configuration in which the flow path is a slit provided in the vertical direction.

  With this configuration, since the flow path provided in the porous body is a slit provided in the vertical direction, the air that passes through the regulated water easily rises along the slit and is introduced into the gas region.

  The wall suction bag of the present invention has a configuration in which a plurality of the slits are formed discontinuously in the vertical direction.

  With this configuration, since a plurality of slits are formed discontinuously in the vertical direction, bubbles can rise while moving from the slit to another slit on the upper side. Further, since the slit is discontinuous in the vertical direction, the porous body can maintain a predetermined shape, and the handling becomes easy.

  Furthermore, the wall suction bag of this invention has the structure by which the defoamer contains in the said porous body.

  With this configuration, since the defoamer is contained in the porous body, the bubbles rise more smoothly inside the porous body, and air can be effectively prevented from accumulating inside the porous body.

  In the present invention, the suction pressure is adjusted to a substantially constant pressure by introducing the atmosphere into the gas region from the air inlet through the regulated water in the pressure adjusting unit. At this time, bubbles are generated by the air passing through the regulated water, but the porous body provided in the regulated water subdivides the bubbles and disappears, so the sound when the bubbles break can be eliminated. Furthermore, since air (bubbles) flows along the flow path provided in the porous body, it is possible to prevent air from accumulating inside the porous body and increasing the water level, and to increase the level of the regulated water. Thus, it is effective to be able to grasp an accurate suction pressure.

It is sectional drawing of the conventional drainage collection container. It is the perspective view which saw through the wall suction bag concerning embodiment of this invention. It is sectional drawing which shows the structure of the wall suction bag concerning embodiment of this invention. (A) is a perspective view of a porous body, (B) is a perspective view which shows the state which extended the porous body sideways. It is a graph which shows the measurement result of the change of the water level in a suction pressure reading pipeline, (A) is at the time of water injection, (B) is during ventilation, and (C) is at the time of opening. It is a perspective view which shows the modification of the flow path provided in the porous body. It is a perspective view which shows another modification of the flow path provided in the porous body. It is a perspective view which shows another modification of the flow path provided in the porous body. It is a perspective view which shows another modification of the flow path provided in the porous body. (A)-(F) is a graph which shows the measurement result of the change of the water level in the suction pressure reading pipe line at the time of using the porous object which provided the channel of various forms.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 2 and 3, a wall suction bag 10 according to an embodiment of the present invention is configured to suck body fluid discharged from a living body such as a patient, for example, on a wall of an operating room (not shown). In this case, the liquid is sucked at a predetermined suction pressure and collected as drainage.

  The wall suction bag 10 has, for example, a case 11 having a rectangular parallelepiped outer shape formed of integral transparent plastics and the like, and a drain tube 12a connected to the upper plate 11a which is the upper surface of the case 11 is provided. A drainage inlet 12 for sucking drainage from a patient or the like, a suction tube 14a connected to a suction means, a suction port 14 for decompressing the gas region 13 in the housing 11, and an air introduction opening to the atmosphere A mouth 15 is provided.

  Inside the housing 11, a drainage collecting unit 20 that stores the drained fluid that communicates with the drainage inlet 12, and a drainage collecting unit 20 that communicates with the suction port 14 and the gas region 13 is provided. And a pressure adjusting unit 40 that is provided between the air inlet 15 and the gas region 13 and adjusts the suction pressure for sucking the drainage.

  Here, the drainage recovery unit 20 includes a first recovery tank 22 and a second recovery tank 23 that are partitioned by a partition plate 21 that can circulate only in the upper portion 21a. The number of collection tanks is not limited to two.

  The water sealing part 30 is adjacent to the drainage recovery part 20 through a partition wall 31 that can circulate only in the upper part 31a, is formed downward from the upper plate 11a of the housing 11, and is a partition that can circulate only in the lower part 32a. The plate 32 is divided into two regions, a first region 33 and a second region 34. The cross-sectional area of the second region 34 on the suction port 14 side is formed larger than the cross-sectional area of the first region 33 on the drainage inlet 12 side, and is a boundary between the first region 33 and the second region 34. The lower part 32a of the partition plate 32 is sealed with water seal water W1.

  That is, the first region 33 communicates with the drainage recovery unit 20 above the partition wall 31a, and the second region 34 communicates with the gas region 13, and in a normal suction state in which the gas region 13 is decompressed, Since the gas region 13 has a negative pressure more than the drainage recovery unit 20 side (patient side), the water surface on the second region 34 side is higher than the water surface of the first region 33.

  Further, when the patient's negative pressure increases after the patient coughs or sneezes, the water seal water W1 rises in the first region 33, but the water head pressure due to the difference from the liquid level in the second region 34 is gas. When the pressure difference between the region 13 and the drainage recovery unit 20 becomes equal, the rise of the water seal water W1 in the first region 33 stops. Thereby, the backflow of the air from the gas area | region 13 to the waste liquid collection | recovery part 20 is interrupted | blocked.

The pressure adjustment unit 40 includes, for example, a storage unit 41, an air introduction unit 42, and a suction pressure reading pipe 43 as an air circulation unit. The storage unit 41 includes pressure-regulating water W 2 and a porous body 44. Yes. Only the lower portion 41 a of the storage portion 41 is connected to the air introduction portion 42 so as to be able to circulate, and guides air into the storage portion 41. In addition, the reservoir 41 is connected to the suction pressure reading conduit 43 so that the upper and lower sides can flow, and the upper portion of the reservoir 41 is a gas region 13.
That is, the pressure adjusting unit 40 and the water sealing unit 30 are connected in parallel to the suction unit.

  The porous body 44 is composed of, for example, a three-dimensionally extending wall portion having a large number of holes made of sponge-like foamed polyurethane and the like, and a water surface planned portion when the pressure-regulating water W2 is stored in the storage portion 41. It extends from the gas region 13 above (the liquid level planned portion) to the connection portion (that is, the lower end portion) between the storage portion 41 and the air introduction portion.

As shown in FIGS. 4A and 4B, the porous body 44 has an overall rectangular shape, and is slit as a flow path through which air (hereinafter, air in the pressure-regulated water W2 is referred to as “bubble B”). A plurality of 44a are formed discontinuously in the vertical direction, and are easily opened by a horizontal force (see FIG. 4B).
The porous body 44 desirably contains an antifoaming agent such as silicone. Alternatively, the porous body 44 can be hydrophilized by plasma treatment. By making it hydrophilic in this way, the surface tension is lowered and the bubbles B (see FIG. 1) are easily broken.

  Thereby, the lower part of the porous body 44 is immersed in the regulated water W2 and the upper part is in contact with the gas region 13, and the bubbles B that enter from the lower part of the porous body 44 are subdivided in the porous body 44 and disappear. . At this time, since it can rise along the slit 44a, the bubble B is prevented from accumulating inside the porous body 44, and the rise of the water surface is prevented.

Next, the operation of the wall suction bag 10 will be described with reference to FIGS. 1 and 2.
1) The suction means (not shown) is operated to suck the air in the gas region 13 in the wall suction bag 10 from the suction port 14.
2) When the air in the wall suction bag 10 is sucked from the gas region 13, the gas region 13 becomes negative pressure, and a suction pressure flowing into the wall suction bag 10 from the air introduction part 42 and the drainage inlet 12 is formed. .
3) When there is drainage to be sucked, drainage is sucked into the drainage recovery unit 20 from the drainage inlet 12, and the drainage is stored in the order of the first recovery tank 22 and the second recovery tank 23. The
4) On the other hand, the air sucked into the gas region 13 from the air introduction part 42 passes through the regulated water W2 in the storage part 41, whereby the suction pressure of the drainage inlet 12 is adjusted to a predetermined pressure.
5) The air introduced from the air introduction part 42 becomes bubbles B when moving from the air introduction part 42 to the storage part 41, enters the porous body 44 in the storage part 41, and is subdivided along the slit 44a. It rises and disappears at the interface in contact with the gas region 13 in the vicinity of the planned water surface. In this case, the regulated water W2 is connected to the lower part of the storage part 41, the lower part of the air introduction part 42, and the lower part of the suction pressure reading conduit 43 so that the air introduced from the air introduction part 42 is porous. The air 44 is blocked by the body 44 or is prevented from entering the suction pressure reading pipe 43 by other means, and the porous body 44 is raised. Moreover, the bubble B raises smoothly by making the porous body 44 contain an antifoamer.
6) On the other hand, since the regulated water W2 communicates with the lower part of the storage part 41, the air introduction part 42, and the suction pressure reading conduit 43, even if air flows in from the air introduction part 42, the pressure adjustment water W2 is sucked into the storage part 41. The pressure reading line 43 has the same water level, and as a result, the water level in the reservoir 41 can be read by the suction pressure reading line 43, and the suction pressure in the drainage recovery part 20 can be set and confirmed.

  Next, with reference to FIG. 5, the water level in the suction pressure reading pipe 43 of the pressure adjusting unit 40 for the wall suction bag 10 containing the sponge (porosity 97%, about 8 cells / 25 mm) as the porous body 44. The measurement results will be described. At the time of measurement, (A) When water was poured into the reservoir 41 to a scale of about 19 cm, (B) the suction port 14 was opened while (B) the vent was sucked from the suction port 14 and vented to the reservoir 41. It is at the time of opening. In addition, the measurement was performed when the slit 44a and the antifoaming agent were not provided on the sponge, when the slit 44a was provided without the antifoaming agent, and when the slit 44a and the antifoaming agent were provided (measured twice).

As shown in FIG. 5, in the case where neither the slit 44a nor the antifoaming agent is provided in the sponge, the water surface rises to the highest level when it is ventilated after pouring water to a predetermined height, and the water surface does not drop so much even after opening. It can be seen that the rise of the water surface due to the generated bubbles B is large.
On the other hand, when the sponge 44 is provided with a slit 44a, the rise of the water surface during aeration is suppressed even when no antifoaming agent is provided, and when the air is opened, it is lowered to near the time of water injection. did. In addition, when both the slit 44a and the antifoaming agent are provided in the sponge, and after the water is once drained to dry the inside, and the second time measured by pouring water again, the rise in the water level during ventilation is further suppressed, At the time of opening, it dropped to almost the same height as at the time of water injection.

  As described above, according to the wall suction bag 10 according to the embodiment of the present invention described above, the suction port 14 of the housing 11 is connected to the suction means to reduce the pressure of the gas region 13, thereby draining the liquid from the drainage inlet 12. Is collected in the drainage collecting unit 20. At this time, in the pressure adjusting unit 40, the air is introduced from the air introduction port 15 through the regulated water W2 into the gas region 13, so the suction pressure from the drainage inlet 12 is adjusted to a substantially constant pressure. The At this time, air bubbles B are formed by the air passing through the regulated water W2, but the porous body 44 provided in the regulated water W2 subdivides the bubbles B and disappears, so that the bubbles B enter the gas region 13. The sound when it breaks off can be turned off. Further, since the bubbles B flow along the flow path (slit 44a) provided in the porous body 44, it is possible to prevent the bubbles B from accumulating inside the porous body 44 and prevent the water level from increasing greatly, and the pressure-controlled water The accurate suction pressure can be grasped from the height of the liquid level of W2.

  In addition, since the flow path provided in the porous body 44 is the slit 44 a provided in the vertical direction, the bubbles B passing through the regulated water W <b> 2 easily rise along the slit 44 a and are introduced into the gas region 13.

  Further, since a plurality of slits 44a are formed discontinuously in the vertical direction, the bubbles B can rise while moving from the slit 44a to another slit 44a on the upper side. Further, since the slit 44a is discontinuous in the vertical direction, the porous body 44 can maintain a predetermined shape, and the handling becomes easy.

  Furthermore, since the porous body 44 contains an antifoaming agent, the bubbles B rise more smoothly inside the porous body 44 and effectively prevent the bubbles B from accumulating inside the porous body 44. Can do.

The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the above-described embodiment, and the wall suction bag 10 is within the scope of the present invention described in the claims. Various modifications and changes are possible.
For example, in the above-described embodiment, the case where a plurality of slits 44a are formed discontinuously in the vertical direction as the flow path through which the bubbles B flow has been described. In addition, as in the porous body 45 illustrated in FIG. When four openings 45a penetrating in the vertical direction are provided in the vertical direction, as in the porous body 46 shown in FIG. 7, when two openings 46a penetrating in the width direction are provided in the vertical direction, the porosity shown in FIG. When the triangular notch 47a is provided in the vertical direction as in the body 47, a modified example in which the slit 48a continuous in the vertical direction is provided and divided into four as in the porous body 48 shown in FIG.

FIG. 10 shows the measurement result of the change in the water level in the suction pressure reading pipe 43 of the pressure adjusting unit 40. (A) is a sponge without a flow path, and (B) is described above. When the slit 44a of the embodiment is provided, (C) to (F) are shown for the above-described modification. 10A is the same as the case where the slit 44a and the antifoaming agent shown in FIG. 5 are not provided, and FIG. 10B is the case where the slit 44a and the antifoaming agent shown in FIG. 5 are provided. Is the same. For comparison with the modified example, it is shown repeatedly.
As can be seen from FIG. 10, an increase in the water level can be suppressed by providing a flow path through which the bubbles B flow, not limited to the slit 44a in the above-described embodiment.

DESCRIPTION OF SYMBOLS 10 Wall suction bag 11 Housing | casing 12 Drainage inflow port 13 Gas area 14 Suction port 15 Air introduction port 20 Drainage collection part 30 Water seal part 40 Pressure adjustment part 41 Storage part (air circulation part)
44 porous body 44a slit (flow path)
B Air bubbles (air)
W2 pressure regulation water

Claims (3)

A casing having a drainage inlet for sucking drainage, a suction port for connecting the suction means to decompress the gas region, and an air inlet opening to the atmosphere;
In the housing,
A drainage collecting part for storing the drained fluid communicated and sucked to the drainage inlet;
A water seal portion that communicates with the suction port and is provided between the drainage recovery portion and the gas region;
A pressure adjusting unit that is provided between the air inlet and the gas region and adjusts a suction pressure for sucking the drainage;
In the pressure adjusting portion comprises a porous material with a pressure water air circulating unit through which the air flows, a wall suction bag,
The porous body is composed of a three-dimensionally extending wall portion having a large number of holes, and a flow path through which air flows in the vertical direction of the three-dimensionally extending wall portion of the porous body is a slit, an opening, or A wall suction bag , characterized by being formed by a notch . The wall suction bag according to claim 1 , wherein a plurality of the slits are formed discontinuously in the vertical direction. The wall suction bag according to claim 1 or 2 , wherein the porous body contains an antifoaming agent.

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