JP2000354625A - Aspiration bag for continuous thoracic cavity drainage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aspiration bag for a continuous thoracic cavity drainage which can prevent the aseptic water of a water seal section from reversing. SOLUTION: A plurality of storage tanks arranged in parallel including a first storage tank 11 to a final storage tank 14 which are connected with each other in parallel in order to store a discharged liquid, and a water seal tank 15 which communicates with the upper section of the final storage tank through a connecting pipe 19, are provided. The connecting pipe connects the upper section of the final storage tank and the lower section of the water seal tank. A discharged liquid port 23 which is formed on the upper section of the first storage tank, and in which the discharged liquid from a patient is made to flow in, and a suction port 24 which is formed on the upper section of the water seal tank, and to which a tube connected to a continuous thoracic cavity drainage is connected, are disposed. Then, an expanded water reservoir chamber 20 is provided on the upper section of the connecting pipe, and in addition, a reverse flow preventive dome 21 of a semi-spherical shape or the like which projects on the upper surface of the water reservoir chamber is integrally molded on the upper surface of the water reservoir chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction bag for continuous thoracic drainage for sucking and storing drainage from a wound after surgery using continuous thoracic drainage.

[0002]

2. Description of the Related Art As shown in FIG. 6, a conventional suction bag for continuous thoracic drainage is integrally formed in a substantially rectangular parallelepiped shape with a resin such as plastic, and the first storage tank R1 is arranged in order from the left side in the figure. , A second storage tank R2, a third storage tank R3, and a water seal tank W are integrally formed in parallel. The upper part of the first storage tank R1 and the second storage tank R2 is connected by the communication hole 2, and the second storage tank R2 and the third storage tank R2 are connected to each other.
It is connected to the storage tank R3 by the communication hole 3. The upper part of the third storage tank R3 and the bottom part of the water seal tank W are connected by a connecting pipe 4. And the first
A drain port 5 into which drainage from a patient flows is provided above the storage tank R1, and a suction port 6 connected to a continuous thoracic drainage (not shown) is provided above the water seal tank W. A drain connector 7 is attached to the drain port 5, and a suction port connector 8 is attached to the suction port 6.

[0003]

By the way, in the above-mentioned conventional suction bag for continuous thoracic drainage, the upper part of the third storage tank R3 and the bottom part of the water seal tank W are connected to each other by the connecting pipe 4.
And the suction port connector 8
Is suddenly pulled out, a positive pressure (atmospheric pressure) acts from the upper portion in the water seal tank W, and the sterile water in the water seal portion S passes through the upper portion of the connecting pipe 4 to the third storage tank (final storage tank) R3. There was a problem that the sterilized water disappeared and the positive pressure was applied to the patient's thoracic cavity. A similar phenomenon occurs when a patient coughs and creates a negative pressure on the patient side.

On the other hand, the cross-sectional shape of the connecting pipe 4 connecting the upper part of the third storage tank R3 and the bottom part of the water seal tank W is usually circular. For this reason, it is not easy to print a scale on the surface of the suction bag, which is a molded product, with a seal or silk printing. Therefore, in a conventional suction bag, the sterile water level inside the suction bag can be accurately determined by seeing through the connecting pipe 4. It could not be measured.

[0005] In addition, the suction bag for continuous thoracic drainage, when it is full of drainage, weighs at least 1 kg for a 1 liter container and at least 2 kg for a 2 liter container. . Therefore, when removing and using the suction bag from the main body of the continuous thoracic drainage, the patient has to carry it to hold it, which is inconvenient.

Furthermore, since the sterile water injected into the water seal tank W is colorless and transparent, and the suction bag for continuous thoracic drainage is also transparent, the scale of the water seal tank W is difficult to read.

[0007] Therefore, an object of the present invention is to provide a continuous thoracic drainage which can prevent the sterile water in the water seal portion from strongly flowing back to the final storage tank even when the suction port connector is suddenly pulled out. It is to provide a suction bag.

It is another object of the present invention to provide a suction bag for continuous thoracic drainage, in which the suction bag is easily carried.

Still another object of the present invention is to make it easier to attach a measuring scale to a side surface of a connecting pipe connecting a final storage tank and a water seal tank.

[0010]

In order to solve the above problems, a suction bag for continuous thoracic drainage according to the present invention comprises a first storage tank or a final storage tank connected in parallel to store drainage. A plurality of juxtaposed storage tanks including a tank, a water seal tank connected to the upper part of the final storage tank, a connection pipe connecting the upper part of the final storage tank and the lower part of the water seal tank, In the suction bag for continuous thoracic drainage, comprising a drain port formed at an upper portion to allow drainage to flow and a suction port formed at an upper portion of the water seal tank and connecting a tube connected to the continuous thoracic drainage, the connection tube An extended water storage chamber is provided at the upper part of the water storage chamber, and a backflow prevention dome bulging upward is integrally formed on the upper surface of the water storage chamber.

According to the present invention, in the suction bag for continuous thoracic drainage, the connecting pipe connecting the upper part of the final storage tank and the lower part of the water seal tank is bent in a loop shape near the final storage tank to form a handle. It is configured to form.

According to the present invention, in the suction bag for continuous thoracic drainage, at least a part of the side surface of the connecting pipe connecting the final storage tank and the bottom of the water seal tank is formed to be flat, and the flat surface is formed. Is provided with a measuring scale.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The suction bag shown in FIGS.
It is a suction bag for sucking and storing drainage from a wound after surgery on a patient's heart and lungs using continuous chest drainage. This suction bag is integrally formed of a resin such as a transparent plastic, and the first storage tank 11, the second storage tank 12, the third storage tank 13, the fourth storage tank 14, and the water Seal tank 15
Are integrally formed in parallel. The upper part of the first storage tank 11 and the second storage tank 12 is communicated with a communication hole 16, and similarly, the upper part of the second storage tank 12 and the third storage tank 13 is a communication hole 17, and the third storage tank The upper portion of the tank 13 and the fourth storage tank 14 are in communication with each other through the communication hole 18. The upper part of the fourth storage tank 14 which is the final storage tank and the water seal tank 1
5 is connected to the bottom part by a connecting pipe 19.

A portion of the upper portion of the connecting pipe 19 is expanded to form a water reservoir 20, and a hemispherical backflow prevention dome 21 is formed on the upper surface of the water reservoir 20. The shape of the water storage chamber 20 can be substantially a rectangular parallelepiped shape as is clear from FIGS. The backflow prevention dome 21
The shape is not limited to a hemisphere, and any other shape may be used as long as the shape protrudes from the upper surface of the water reservoir 20. A connecting pipe 19 is formed in a loop shape at the end of the water storage chamber 20 as shown in FIG. The connecting pipe 19 extends upward from the upper surface of the reservoir 20 first, then extends laterally, then extends downward, and finally extends laterally again in the opposite direction and communicates with the communication hole 18. . Note that the handle portion 22 is positioned as a whole at the center of the suction bag, and its shape may be any shape suitable for being held by hand.

The first storage tank 11, the second storage tank 12, the third storage tank 13, and the fourth storage tank 14 have a substantially rectangular cross section as shown in FIG. 2 and FIG. A scale for measurement is displayed on a part of one side as shown. On the other hand, at the bottom of the water seal tank 15, a scale indicating an appropriate water level of water for sealing (sterile water) is formed, and at least a part of a side surface (a side surface shown in FIG. 1) of the connecting pipe 19 is formed flat. On the flat portion, a scale 19a for measuring the negative pressure in the thoracic cavity is displayed.

A drain port 23 through which drainage flows is formed in the upper part of the first storage tank 11, and a suction port 24 connected to the continuous thoracic drainage is provided in the upper part of the water seal tank 15. ing. A drain port connector 25 is attached to the drain port 23.
After 5, the drainage from the patient is aspirated, and the drainage is stored in the first storage tank 11, the second storage tank 12, the third storage tank 13, and the fourth storage tank 14 in this order. That is, as the suction amount of the drainage increases, the drainage overflows the first storage tank 11 and flows into the second storage tank 12, and when the second storage tank 12 is full, the wastewater flows into the next third storage tank 13. Finally, it flows into the fourth storage tank 14. The suction port 24 is provided with a tubular suction port connector 26 which is inserted and attached so that an innermost annular valve seat portion (not shown) is located inside the water seal tank 15.

On the other hand, a throttle portion 27 having a narrow cross section is formed in a part of the water seal tank 15 near the upper portion, and a ball valve 28 is placed on the throttle portion 27.
When the drainage is filled in the water seal tank 15, the ball valve 28 floats by the drainage and is pressed upward from below by the annular valve seat portion at the lower end of the suction connector 26, whereby the flow path is formed. It is being closed. Ball valve 2
The suction port of the water seal tank 15 and the constricted portion 27 are formed in a conical tube shape so that the surface 8 can reliably float toward the annular valve seat portion of the suction connector 26. In addition, when the drainage liquid is mixed with air to form a foam, or when the patient coughs, a sufficient pressure between the air circulation port, the ball valve 28, and the annular valve seat is sufficient for the positive pressure generated. Secured, ball valve 2
8 does not float except when it floats due to drainage. The ball valve 28 is made of plastic or the like having a lower specific gravity than the drainage liquid, and may be solid or hollow.

Next, the operation of the suction bag for continuous thoracic drainage according to the present invention will be described. Connect tubing from continuous thoracic drainage to suction port connector 26,
When the air in the suction bag is sucked by the continuous chest drainage, the drainage liquid is sucked through the drainage connector 25 and is first stored in the first storage tank 11. When the first storage tank 11 is full, the drainage flows into the second storage tank 12 through the communication hole 16 and accumulates. When the suction is continued as it is, the second storage tank 12 becomes full of drainage, overflows from the communication hole 17 and accumulates in the third storage tank 13. When the suction is further continued, the third storage tank 13 becomes full, and the drainage overflows from the communication hole 18 and accumulates in the fourth storage tank 14. Normally, the suction is stopped before the fourth storage tank 14 becomes full, the suction bag is replaced with a new suction bag, and then the suction is continued.
However, if the suction is continued even after the fourth storage tank 14 is full, the overflowed drainage is discharged to the water seal tank 15.
And then try to overflow from the water seal tank 15. However, the water seal tank 15
The ball valve 28 placed on the throttle portion 27 floats due to the drainage, and the ball valve 28 is pressed by an annular valve seat portion formed at the inner end of the suction connector 26 and formed at the center of the suction connector 26. Drainage does not flow into the continuous thoracic drainage due to the closed flow path being closed.

When the tube from the continuous thoracic drainage is pulled out from the suction port connector 26 while the drain tube on the patient side and the drain port connector 25 are connected, the sterilization of the water seal portion in the water seal tank 15 is performed. Positive pressure (atmospheric pressure) is applied to the water from the suction port connector 26, and a phenomenon occurs in which the sterile water flows backward toward the fourth storage tank 14. A similar phenomenon also occurs due to a negative pressure generated when a patient coughs. To prevent this phenomenon,
In this embodiment, a backflow prevention dome 21 is provided. Due to the backflow prevention dome 21, even if an upward backflow of sterile water occurs, the backflow flows into the inside of the backflow prevention dome 21, so that the force due to the backflow force is dispersed in the dome 21 and the direction is changed at the same time. As a result, the backflow of the sterile water flows down without flowing into the final storage tank 14 and is returned into the water seal tank 15.

When carrying the suction bag, the suction bag can be easily carried by putting a hand on a handle 22 formed by bending a part of the connecting tube 19 into a loop shape.

The sterile water stored at the bottom of the water seal tank 15 is used for measuring the negative pressure in the patient's thoracic cavity in a normal use condition and for continuously blocking the thoracic drainage from the atmosphere. Has been injected. At this time, the aseptic water moves up and down the connecting pipe 19 connecting the bottom of the water seal tank 15 and the fourth storage tank 14 to indicate the negative pressure in the thoracic cavity. In the case of the present invention, at least a part of the side surface is made flat by a method such as making the cross section of the connecting pipe 19 semi-cylindrical. For example, by forming the side surface of the connecting pipe 19 shown in FIG. 1 flat, it is possible to accurately apply a graduation scale to the flat surface, and read the water level in the connecting pipe 19 with this scale. You can know the exact pressure.

If necessary, sterile water at the bottom of the water seal tank 15 can be colored. Coloring can be performed by a method such as charging a tablet-like coloring agent into sterile water.

[0024]

As is apparent from the above description, according to the present invention, a widened water storage chamber is provided at the upper part of the connecting pipe for connecting the upper part of the final storage tank and the bottom part of the water seal tank, Further, by providing a backflow preventing dome projecting from the top surface of the hemispherical or other shape on the upper surface of the water reservoir, even if a backflow of the sterile water stored in the water seal tank occurs, the force of the backflow force is applied to the dome. By dispersing and simultaneously changing the direction of the water flow in the inside, it is possible to prevent aseptic water from flowing into the final storage tank, and the backflow water flows down in the water seal tank, and furthermore, the patient's thoracic cavity There is no positive pressure inside.

Further, since the connecting pipe for connecting the water storage chamber and the final storage tank is formed by bending the connecting pipe, the suction bag can be carried in a stable state. Furthermore, by forming a flat surface on at least a part of the side surface of the connecting pipe that connects the water reservoir and the water seal tank, it is possible to accurately graduate the flat surface and reduce the negative pressure in the patient's thoracic cavity. It can be measured accurately.

[Brief description of the drawings]

FIG. 1 is a front view showing a suction bag for continuous thoracic drainage of the present invention.

FIG. 2 is a plan view showing the suction bag.

FIG. 3 is a right side view showing the suction bag.

FIG. 4 is a rear view showing the suction bag.

FIG. 5 is a sectional view of the suction bag taken along line AA of FIG. 4;

FIG. 6 is a front view showing a conventional suction bag for continuous thoracic drainage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 1st storage tank 12 2nd storage tank 13 3rd storage tank 14 4th storage tank 15 water seal tank 19 connecting pipe 20 water storage chamber 21 backflow prevention dome 22 handle 23 drain port 24 suction port 25 drain connector 26 suction port connector

Continuation of the front page (72) Inventor Toru Higashihara 547 Minorudai, Matsudo-shi, Chiba F-term (reference) 4C077 AA18 DD11 DD12 HH06 HH10 HH13 HH16 HH20 JJ05 JJ09 JJ13 KK09

Claims (3)

[Claims] 1. A plurality of juxtaposed storage tanks including a first storage tank or a final storage tank connected to each other in parallel for storing drainage, and a water seal tank connected to an upper part of the final storage tank. A connection pipe for connecting an upper part of the final storage tank and a lower part of the water seal tank, a drain port formed in the upper part of the first storage tank to allow drainage to flow, and a continuous pipe formed in the upper part of the water seal tank. In a suction bag for continuous thoracic drainage, which comprises a suction port for connecting a tube connected to a target thoracic drainage, an extended water reservoir is provided at an upper portion of the connection tube, and a backflow prevention bulging upward on the upper surface of the water reservoir. A suction bag for continuous thoracic drainage, wherein the dome is integrally formed. 2. The connecting pipe connecting the upper part of the final storage tank and the lower part of the water seal tank is bent in a loop near the final storage tank to form a handle. 2. The suction bag for continuous thoracic drainage according to 1. 3. The connecting pipe, which connects the final storage tank and the bottom of the water seal tank, has at least a part of a side surface formed as a flat surface, and a measuring scale is provided on the flat surface. The suction bag for continuous thoracic drainage according to claim 1.