JPH0994294A - Low-pressure suction/discharge unit for clinical use - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable low-pressure suction/discharge while performing a postoperative management process under way with safety and ease by preventing germ- free water from foaming and by lowering its evaporation rate so that the germ- free water will not migrate from the small chamber of a suction pressure setting section into the neighboring water-sealed section, etc. SOLUTION: A suction pressure setting section 1, water-sealed section 11, and liquid collecting section 21 are arranged in this order, and gas can pass through this lineup. A pigment 5 impregnated with an antifoaming agent 6 is placed in a small passage 3 or small chamber 4 of the suction pressure setting section 1, and a float 15 is provided at the upper part of a small passage 12 of the water-sealed section 11 for the blockage of the passage. The liquid collecting section 21 is divided into plural small chambers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low pressure suction / discharge device for medical use, and more particularly to a low pressure suction / discharge device for discharging liquid and gas from a body cavity such as a chest.

[0002]

2. Description of the Related Art A low-pressure suction / exhaust device for the chest is often used to maintain a constant internal pressure after thoracotomy, and as a method therefor, after connecting to a suction source, atmospheric pressure is introduced from below a constant water column. And a pressure-regulating bottle to keep the suction pressure always constant, and the exhaust gas from the chest passes under the surface of the water to the exhaust passage,
A water-sealed bottle for detecting the discharge of gas with the generation of bubbles at that time and the degree of negative pressure generation on the chest side,
The three bottle method with a bottle for draining the chest is commonly used as a known method. As a low-pressure suction / discharge device for medical use which is made by applying the 3-bottle method to one unit, for example, a suction / discharge device as shown in FIG. 2 described in Japanese Patent Publication No. 53-13913 is proposed.

In these devices, the suction pressure setting section connected to the suction source always keeps the suction pressure constant as described above. Specifically, the outside air is put into sterile water (set water column) injected in advance. Is introduced to reduce the suction source to the set water column pressure and keep the suction pressure constant.

With the aging society in recent years, the height of the bed for hospitalization tends to decrease. Therefore, a low pressure suction / exhaust device used under the bed is also desired to have a short height. However, if the height of the conventional product is simply lowered, the space above the injected sterile water will be narrowed and the continuous water bubbles generated when the outside air passes through the sterile water causes the sterile water surface to foam, depending on the strength of the suction source, the adjacent water seal part, Alternatively, there is a problem that sterile water is sucked into the connection tube to the suction source. Further, due to this foaming, aseptic water is easily vaporized and the evaporation rate is accelerated, and it is necessary to frequently add aseptic water during use, which is complicated.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve such problems of the conventional low-pressure suction / discharging device, and to suppress foaming of aseptic water in the suction-pressure setting portion to seal the water. The present invention aims to provide a low-pressure suction / exhaust device having a slower rate of aseptic water vaporization and transfer to a suction section or suction source.

[0006]

That is, the present invention provides a water having a suction pressure setting section having a pressure adjusting chamber connected to a suction source, and a water sealing chamber communicating with the suction pressure setting section in gas flow communication. A body fluid discharge device comprising a sealing portion and a liquid collecting portion having a liquid storage chamber having a body fluid inlet at an upper portion in fluid communication with the water sealing portion, wherein a defoaming agent is previously provided in the suction pressure setting portion. Is a low-pressure suction / discharge device for medical use.

[0007]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the drawings. FIG. 1 is a front sectional view showing a low-pressure suction / discharge device for medical use according to an embodiment of the present invention. The low-pressure suction / discharging device according to the present invention is basically the same as the conventional three-bottle method, and has a suction pressure setting unit 1 having a pressure regulating chamber, and a suction pressure setting unit 1 in the upper part which communicates with the suction pressure setting unit 1 in gas flow to form a water sealing chamber. And a liquid collecting part 21 having a liquid storage chamber that is in gas communication with the water sealing part 11 in the upper part.

The first suction pressure setting section 1 is provided with a discharge port 8 at the upper part for connecting to a suction source such as a suction pump 25 for discharging gas, and a connecting pipe 7 is connected thereto. In addition, a small chamber 4 into which sterile water is introduced at the time of use is provided with an upper opening 2 which is opened to the outside and is open to the atmosphere, and a thin tube 3 which is in gas-liquid communication in the vicinity of the bottom is provided. A pigment 5 processed into a tablet shape or the like is attached to the lower portion of the small chamber 4 or the thin tube 3 using a pigment fixing portion 9 or water paste, and the pigment 5 is impregnated with an antifoaming agent 6. There is. As a method for impregnating the pigment 5 with the defoaming agent 6, it may be directly applied to tablets or the like, or may be applied by a dipping method or a spraying method after being diluted with a diluent or the like, but it is kneaded at the time of molding into tablets or the like. The method is costly.

In addition to the pigment, a method of impregnating sponge, paper, or the like and attaching it to the small chamber 4 or the like may be considered.
A defoaming agent 6 having a high viscosity of 00CS or more may be selected, and a concave portion may be formed near the lower portion of the small chamber 4 or the like, and dropped therein.

The defoaming agent 6 is not particularly limited, but silicone oil generally used as a defoaming agent or a compound obtained by adding a dispersant to it is appropriate, and the defoaming agent 6 can be rapidly dispersed in sterile water. An easy specific gravity of around 1 is desirable. In addition, the amount of defoaming agent is 20 cmH ₂ O in the maximum setting water column of a general low-pressure suction / exhaust device, so an amount of 5 ppm or more of the water injection amount at this time exerts the defoaming effect, but when the dose is small, it continues. If the amount is too large, on the contrary, the work becomes difficult both in the method of impregnating the pigment 5 and the method of direct application. Therefore, the dose of 50 to 200 ppm is practical and desirable.

The second water seal portion 11 is divided by a partition wall 14 into a small chamber 13 and a narrow tube portion 12 which communicate with each other at the lower portion, and a float 15 for closing the communication is attached to the upper portion of the thin tube portion 12. In addition, at the upper part of the third liquid collecting part 21, one end is connected to a drainage tube indwelling in the internal wound part of the patient, a connecting pipe 24 serving as an inflow port for body fluid is attached, and a partition wall 23 is provided in the room. It is divided into a plurality of small chambers 22 so that the amount of drainage stored can be measured in detail using a scale.
It does not matter if 23 is not provided.

Further, the suction pressure setting unit 1, the water sealing unit 11, the liquid collecting unit 21
A positive pressure relief valve 16 that operates at a positive pressure of several cmH ₂ 0 is provided on either of the above. However, if it is installed closer to the suction pressure setting unit 1 side than the partition wall 14, the outside air and the chest cavity will be more directly exposed. It is preferable because it does not communicate. The low-pressure suction / discharging device of the present invention has basically the same principle of use as the conventional example of FIG. 2 in which the conventional 3-bottle method is used as one unit, that is, the inside of the suction-pressure setting unit 1 is hidden by the suction pump 25 or the like. When the pressure is set to a negative pressure equal to or higher than the water column h of the aseptic water that has been input in advance, the atmosphere is introduced from the upper opening 2 of the thin tube 3 and is discharged from the lower portion, so that the pressure adjusting chamber is always kept at the water column pressure h. Be drunk In addition, the water seal part 11 has an upper part in fluid communication with the suction pressure setting part 1, and aseptic water for preventing backflow of the atmosphere into the patient's chest cavity is put into the bottom part. A negative pressure is maintained inside the liquid collecting part 21 through the seal, and suction force is applied to the internal wound part of the patient via the connecting pipe 24.

Here, in the case of the low-pressure suction and discharge device of the present invention, the defoaming agent 6 is mixed in the sterile water in the small chamber 4 of the suction pressure setting unit 1 so that even if the suction source is strengthened, there is no foaming and the sterile water is removed. Suction and discharge can be performed without moving to the water seal part 11 etc.

[0014]

As described above, in the low-pressure suction / discharging device according to the present invention, even if the suction source is strong, there is no bubbling on the sterile water surface of the suction pressure setting section, and the connection is made to the adjacent water sealing section or the suction source. Since sterile water does not transfer to the tube and the evaporation rate of sterile water is slow, low-pressure suction and discharge can be performed safely and easily while performing postoperative management.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of a low-pressure suction discharge device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a structure of a conventional low pressure suction and discharge device of a 3-bottle method.

[Explanation of symbols]

1 Suction pressure setting part 11 Water seal part
21 Liquid collecting part 2 Upper opening 12 Thin tube part
22 small rooms 3 thin tubes 13 small rooms
23 bulkheads 4 small chambers 14 bulkheads
24 connecting pipe 5 pigment 15 float
25 Suction pump 6 Defoamer 16 Positive pressure relief valve 7 Connecting pipe 8 Discharge port 9 Pigment fixing part

Claims (3)

[Claims] 1. A suction pressure setting unit having a pressure adjusting chamber connected to a suction source, a water sealing unit having a water sealing chamber communicating with the suction pressure setting unit in gas flow communication, and the water sealing unit. In a body fluid discharge device comprising a liquid collection chamber having a liquid storage chamber in which a body fluid inlet is provided in communication in a gas flow manner, a defoaming agent is previously charged in the suction pressure setting unit, Low-pressure suction and discharge device for medical use. 2. The low-pressure suction / discharge device for medical use according to claim 1, wherein the amount of the defoaming agent added is 5 ppm or more of the maximum water injection amount of the suction pressure setting section. 3. The low-pressure suction / discharge device for medical use according to claim 1, wherein a pigment in which a defoaming agent has been kneaded in advance is installed below the suction pressure setting section.