JP2008284138A - Drainage bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage bag for preventing drainage from flowing into a water sealing part through the upper part of the drainage bag as bubbles. <P>SOLUTION: In the drainage bag 10 including a drainage tank 12 for storing the drainage, an inflow port 14 formed at the upper part of the drainage tank 12 for making the drainage flow in, a water sealing tank 16 connected to the upper part of the drainage tank 12 at the lower part and a suction port 18 formed at the upper part of the water sealing tank 16 and communicated with a negative pressure source, a communication hole 30 communicated with the water sealing tank 16 is provided on the upper part of the drainage tank 12, and a partition plate 20 extending downwards from the upper part of the drainage tank 12 and partially partitioning the communication hole 30 and the drainage tank 12 is provided near the entrance on the side of the drainage tank 12 of the communication hole 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a medical drainage bag, and more particularly to a drainage bag used in a low-pressure suction / discharge device.

  2. Description of the Related Art Conventionally, a drainage bag used for collecting body fluid such as when removing body fluid such as blood that continues to exude in a body cavity of a patient from the body cavity is known. Such a drainage bag is provided with an inflow hole for inflow of body fluid, and this hole is connected to a catheter inserted into the body cavity of the patient. Body fluid generated on the patient side passes through the catheter, enters the inflow hole, and is guided into the drainage bag.

  The drainage bag is provided with a gas outlet hole for suction, and the hole communicates with an external negative pressure source. By reducing the pressure in the drainage bag and the body fluid passage, the body fluid in the body cavity is sucked and the body fluid is positively stored in the drainage bag. The drainage bag is provided with a water seal to prevent the gas from flowing back into the patient when the patient has a negative pressure higher than the suction pressure. The outlet hole is usually provided with an overflow prevention valve so that the drainage liquid in the drainage bag does not enter the negative pressure source.

Here, for example, in Patent Document 1, the inner surface of the drainage bag and the flow path of the drainage liquid are covered with a defoaming agent, and the bubbles sucked together with the drainage liquid are annihilated by a chemical action, so that the foam is in the water seal portion It has been proposed not to get in.
JP 2002-369879 A

  By the way, in the above-mentioned conventional drainage bag, since it has a structure in which drainage flows directly into the drainage bag, a foamy aspirate is mixed in this drainage, and postoperative drainage etc. If the foamed suction is sucked into the bag during the suction, the foamed suction is not dripped into the drainage tank before the drainage tank is full. It sometimes flowed into the water seal part.

  And the bubble entrained in the water seal part is mixed in the liquid tank on the negative pressure side of the water seal part and the liquid level becomes foamy, so that the apparent liquid level of the water seal part rises and is provided in the suction port In some cases, the overflow prevention valve is blocked by the bubbles and stops the suction from the suction port. On the other hand, if this bubble flows into the suction device of the negative pressure source from the suction port, it may cause contamination.

  Further, the drainage bag described in Patent Document 1 employs a configuration in which the inner surface of the drainage bag and the flow path of the drainage are covered with an antifoaming agent, but the surface area to be covered is limited. There is a tendency that the foaming agent tends to be insufficient, and the antifoaming agent and the foam are not sufficiently in contact with each other, so that the expected antifoaming action cannot be exhibited.

  This invention is made | formed in view of the situation mentioned above, and it aims at providing the drainage bag which prevents that drainage flows into the water seal part along the upper part of a drainage bag as foam. Is.

The drainage bag according to the present invention employs the following means in order to solve the above problems.
The present invention includes a drainage tank for storing drainage, an inflow port formed at an upper part of the drainage tank for inflowing drainage, and a water seal connected at the lower part to the upper part of the drainage tank. In the drainage bag including a tank and a suction port formed at an upper part of the water-sealed tank and communicating with a negative pressure source, a communication hole communicating with the water-sealed tank is provided at the upper part of the drainage tank. Provided in the vicinity of the inlet of the drainage tank side of the communication hole is a partition that extends downward from the upper part of the drainage tank and partially partitions the communication hole and the drainage tank. It is provided.

  According to the present invention, the foam in the sucked drainage moves in the substantially horizontal direction along the upper part of the drainage tank, but contacts the partition provided at the drainage tank side inlet of the communication hole. To do. The foam is blocked by the partition, and further, the foam is repelled or agglomerated by contact with the partition, and then defoamed and liquefied, or the foam is dropped into the drainage tank by gravity. In this way, since the foam is defoamed and liquefied at the drainage tank side inlet of the communication hole on the upstream side of the water sealing tank, the foam does not enter the water sealing tank along the upper part of the drainage bag.

  Another drainage bag according to the present invention is characterized in that, in the above, at least the drainage tank side of the partition part includes a portion containing an antifoaming agent.

  According to the present invention, the foam in the sucked drainage moves in the substantially horizontal direction along the upper part of the drainage tank, but contacts the partition provided at the drainage tank side inlet of the communication hole. To do. And a foam is defoamed with the antifoamer contained in the drainage tank side of a partition part. In this way, since the foam is defoamed and liquefied at the drainage tank side inlet of the communication hole on the upstream side of the water sealing tank, the foam does not enter the water sealing tank along the upper part of the drainage bag.

  Another drainage bag according to the present invention is characterized in that, in the above, a porous material containing an antifoaming agent is disposed at least on the drainage tank side of the partition part.

  According to the present invention, the sucked foam in the drainage moves along the upper part of the drainage tank in a substantially horizontal direction, but the partition portion blocks the progress toward the communication hole. The foam is defoamed in contact with the defoamer of the porous material arranged on the drainage tank side of the partition. In this way, since the foam is defoamed and liquefied at the drainage tank side inlet of the communication hole on the upstream side of the water sealing tank, the foam does not enter the water sealing tank along the upper part of the drainage bag.

 Another drainage bag according to the present invention is characterized in that, in the above, the partition portion is formed by adding a defoaming agent to a porous material.

  According to the present invention, the sucked foam in the drainage moves along the upper part of the drainage tank in a substantially horizontal direction, but the partition portion blocks the progress toward the communication hole. And a foam is defoamed by contacting the defoamer of a porous material. In this way, since the foam is defoamed and liquefied at the drainage tank side inlet of the communication hole on the upstream side of the water sealing tank, the foam does not enter the water sealing tank along the upper part of the drainage bag.

  Another drainage bag according to the present invention is characterized in that, in the above, an antifoaming agent is applied to at least the drainage tank side of the partition.

  According to the present invention, the sucked foam in the drainage moves along the upper part of the drainage tank in a substantially horizontal direction, but the partition portion blocks the progress toward the communication hole. The foam is brought into contact with the antifoaming agent applied to the drainage tank side of the partition portion and defoamed. In this way, since the foam is defoamed and liquefied at the drainage tank side inlet of the communication hole on the upstream side of the water sealing tank, the foam does not enter the water sealing tank along the upper part of the drainage bag.

  According to the present invention, the foam-like aspirate contained in the drainage is blocked by the partition provided in the upper part of the drainage tank before entering the water-sealed tank through the upper part of the drainage bag. It is defoamed by the defoamer and becomes liquid. For this reason, it is possible to prevent the bubbles sucked into the drainage bag from the inlet at the top of the drainage tank from flowing into the water-sealed tank along the upper part of the drainage bag.

Embodiments of a drainage bag according to the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a front view illustrating an example of a drainage bag 10 according to the present embodiment, and FIG. 2 is a longitudinal sectional view of the drainage bag 10.

  The drainage bag 10 is used for sucking and storing the drainage from the wound after the operation of the patient's lungs or the like. As shown in FIG. 1, the drainage bag 10 is formed in a drainage tank 12 for storing drainage generated in a body cavity of a patient, and an upper part of the drainage tank 12, and flows in drainage from the outside. An inflow port 14, a water sealing tank 16 connected at the lower part to the upper part of the drainage tank 12, and a suction port formed at the upper part of the water sealing tank 16 and communicating with an external negative pressure source (not shown). 18 and is configured integrally.

  As shown in FIG. 1, this drainage bag 10 is made of a transparent material so that the level of drainage accumulated in the drainage tank 12 and the level of water seal water in the water sealing tank 16 can be observed from the outside. In particular, a transparent hard plastic is used so that the volume in the drainage bag 10 does not change even when a negative pressure is applied. Examples of such plastics include polycarbonate, polysulfone, acrylic resin, polystyrene, and styrene-butadiene resin. Further, the wall surface of the drainage bag 10 is provided with a scale for indicating the amount of liquid accumulated in each tank.

As shown in FIG. 2, the drainage tank 12 is partitioned by a first drainage tank 24 provided immediately below the inlet 14 and a partition wall 26 extending upward from the lower end of the first drainage tank 24. The second drainage tank 28 is provided adjacent to the first drainage tank 24.
The upper side of the partition wall 26 is open, and the upper portions of the first drainage tank 24 and the second drainage tank 28 are in communication. A communication hole 30 extending in the lateral direction is provided on the upper side of the second drainage tank 28 not adjacent to the first drainage tank 24.
The communication hole 30 communicates with the upper end of the connection pipe 32 extending in the vertical direction. The connecting pipe 32 is connected to the lower part of the water sealing tank 16 at the lower end thereof.

  A plate-like partition plate extending downward from the upper part of the second drainage tank 28 at a position slightly shifted from the inlet on the second drainage tank 28 side of the communication hole 30 to the second drainage tank 28 side. 20 is provided. The partition plate 20 is provided as a partition portion that partially partitions the communication hole 30 and the second drainage tank 28 so as to ensure communication between the communication hole 30 and the second drainage tank 28. An antifoaming agent is applied to the surface 21.

The operation of the above configuration will be described.
The foam that has been sucked in along with the drainage enters from the inlet 14, then travels along the upper part 23 of the first drainage tank 24 and the second drainage tank 28 toward the inlet of the communication hole 30. Move in the direction.
The foam is guided to the partition plate 20 arranged to extend downward from the upper part of the second drainage tank 28, and the surface 21 on the second drainage tank 28 side of the partition plate 20 is lowered from the top to the bottom. Since it is transmitted, the progress to the communication hole 30 side is blocked.
The discharged foam is brought into contact with the antifoam applied to the surface 21 on the second drain tank 28 side of the partition plate 20, thereby defoaming due to the chemical action of the defoamer. Is done. In addition, this liquid drops on the partition plate 20 and drops into the second drainage tank 28.

  In this way, the foam that enters from the inlet 14 and moves along the upper part 23 of the second drainage tank 28 is the second drainage tank 28 side of the communication hole 30 provided on the upstream side of the water seal tank 16. The surface 21 on the second drainage tank side of the partition plate 20 near the inlet is defoamed and liquefied. For this reason, bubbles do not enter the water sealing tank 16 along the upper portion 23 of the drainage bag 10. By doing in this way, it can prevent that a bubble penetrate | invades into the water sealing tank 16. FIG.

In the above embodiment, as the partition plate 20, instead of using a plate-like material coated with an antifoaming agent, a sponge material containing an antifoaming agent, a nonwoven fabric, paper, a filter such as a filtration membrane, You may use what attached porous materials, such as a bonded body, to the surface 21 by the side of the 2nd drainage tank 28 of the partition plate 20. FIG.
Further, the partition plate 20 itself may be used so as to be constituted by the above porous material such as a sponge material containing an antifoaming agent, and further, the partition plate 20 can be used for a honeycomb structure or a multi-bundle tube having a large specific surface area. You may use it by comprising with what was impregnated with the foaming agent, and in any case, there can exist an effect similar to this invention.

  As the antifoaming agent used in the present invention, an antifoaming agent that is usually used for coating on the surface of medical equipment in order to prevent foaming of the drainage can be used, and is not particularly limited. A silicone-based antifoaming agent may be used.

As described above, in the drainage bag 10 according to the present invention, even if the foamy suction material contained in the drainage moves along the upper part 23 of the second drainage tank 28, it enters the water sealing tank 16. Before, it comes into contact with the partition plate 20 as a partition portion provided in the vicinity of the inlet of the communication hole 30, is defoamed by the defoaming agent charged in the partition plate 20, and is dropped into the second drainage tank 28.
For this reason, before the capacity of the drainage tank becomes full, the foamed suction material does not drip into the second drainage tank 28 and does not travel through the upper part 23 of the second drainage tank 28 and enter the communication hole 30. The foam does not flow into the water sealing tank 16.

  As described above, in the drainage bag 10 according to the present invention, the bubbles are not entrained in the water-sealed tank, so that the overflow prevention valve provided at the suction port does not malfunction, and the bubbles are in the suction device of the negative pressure source. It does not contaminate this by flowing in.

  Note that the shapes, combinations, operation procedures, and the like of the constituent members shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

It is a front view showing an example of drainage bag 10 concerning this embodiment. 1 is a longitudinal sectional view of a drainage bag 10. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Drain bag 12 ... Drain tank 14 ... Inlet 16 ... Water-sealed tank 18 ... Suction port 20 ... Partition plate (partition part)
30 ... Communication hole

Claims (5)

A drainage tank for storing drainage,
An inlet formed at the top of the drainage tank and into which drainage flows;
A water-sealed tank connected at the lower part to the upper part of the drainage tank;
In a drainage bag configured to include a suction port that is formed in the upper part of the water sealing tank and communicates with a negative pressure source,
A communication hole communicating with the water sealing tank is provided in the upper part of the drainage tank,
In the vicinity of the inlet on the drainage tank side of the communication hole, there is provided a partition part that extends downward from the upper part of the drainage tank and partially partitions the communication hole and the drainage tank. A drainage bag characterized by having   The drainage bag according to claim 1, wherein at least the drainage tank side of the partition part includes a part containing an antifoaming agent.   The drainage bag according to claim 2, wherein a porous material containing an antifoaming agent is disposed on at least the drainage tank side of the partition part.  The drainage bag according to claim 2, wherein the partition part is formed by adding a defoaming agent to a porous material.   The drainage bag according to claim 1 or 2, wherein an antifoaming agent is applied to at least the drainage tank side of the partition part.

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