JP3204599B2 - Low pressure suction and discharge device for medical use - Google Patents

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 / discharge device for the chest is often used to maintain a constant internal pressure after thoracotomy, but as a method, the suction pressure is constantly introduced by introducing atmospheric pressure from below a fixed water column. A pressure regulating bottle to keep it constant, and exhaust gas from the chest passing under the water surface and led to the exhaust passage, and the generation of bubbles at that time to detect gas discharge and the degree of negative pressure generation on the chest side A three-bottle method, a water-sealed bottle and a bottle for draining liquid from the chest, is generally used as a known method.

As an example of a medical low-pressure suction / discharge device integrated into one unit by applying the three-bottle method, an underwater discharge device as shown in FIG. 2 described in Japanese Patent Publication No. 53-13913 has been proposed. ing.

In these devices, the method of reading the degree of negative pressure on the thoracic side (intrathoracic pressure), which is important for postoperative management, is based on the upper surface of sterile water in the suction pressure setting unit (1) and the water sealing unit (11) It is determined by adding the scale of the upper surface of the sterile water column. However, in addition to the water surface rising and falling gently with the patient's breathing, the suction pressure setting unit (1) has a thin tube (3)
Since the air introduced from the air becomes continuous bubbles and passes through the aseptic water and rises, there is a problem that the water surface shakes greatly and it is difficult to read the scale. In addition, there is a possibility that the amount of water may decrease due to evaporation of the sterile water, and there is also a problem that a preset suction pressure is not known, especially when a postoperative manager (mainly a nurse) changes. An easy-to-read suction pressure setting unit has been desired.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem of the conventional low-pressure suction / discharge device, and is provided with a suction pressure setting section which can read the suction pressure at a glance. And a low-pressure suction / discharge device.

[0006]

That is, the present invention provides a water supply apparatus having a suction pressure setting section having a pressure regulating chamber connected to a suction source, and a water sealing chamber communicating with the suction pressure setting section in gas flow. In a bodily fluid discharging device comprising a sealing portion and a liquid collecting portion which communicates with the water sealing portion in gas flow and swings a liquid storage chamber provided with a bodily fluid inflow port on an upper portion, the suction pressure setting portion is formed by a partition wall. Is divided into a small tube part which is open to the atmosphere and whose lower end is located near the bottom surface, and two small chambers which communicate with each other at the top and bottom. A low-pressure suction / discharge device for medical use, wherein the medical device is divided into a small part and a small chamber, and the liquid collecting part is divided into a plurality of small materials by a partition.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a front sectional view showing a medical low-pressure suction / discharge device according to an embodiment of the present invention. The low-pressure suction / discharge device according to the present invention basically communicates with the suction pressure setting unit (1) having a pressure regulating chamber and the suction pressure setting unit (1) at the upper part in gas flow, similarly to the conventional three-bottle method. It is composed of a water sealing section (11) having a water sealing chamber and a liquid collecting section (21) having a liquid storage chamber at the upper part in gas communication with the water sealing section (11).

The first suction pressure setting section (1) divides the room into which sterile water is charged at the time of use into two small chambers (4, 5) communicating with both the upper and lower parts by a partition (6). A discharge port (8) connected to a suction source such as a suction pump (25) for discharging gas is provided at an upper portion, and a connecting pipe (7) is connected. The small chamber (4) is provided with a small tube (3) which has an upper opening (2) which is open to the outside of the room and is open to the atmosphere, and which is in gas-liquid communication near the bottom surface.

The second water seal portion (11) is divided into a small chamber (13) and a small tube portion (12) communicating with each other at a lower portion by a partition (14), and a communication passage is closed at an upper portion of the small tube portion (12). A float (15) is provided to perform the operation. Also, the third
The liquid collecting part (21) has an upper end connected to a drainage tube indwelled in a wound part of a patient, a connecting pipe (24) serving as an inflow port for bodily fluid, and a partition (23) in the room.
Is provided to divide the chamber into a plurality of small chambers, and the storage amount of the drainage liquid can be finely measured by the scale. However, the partition (23) may be omitted without any problem.

Further, a suction pressure setting section (1), a water sealing section (1)
1) A few cm of H ₂ O is placed on the upper part of any
Although a positive pressure relief valve (16) that operates by positive pressure is provided, the outside air and the thoracic cavity do not directly communicate with each other when it is installed on the suction pressure setting unit (1) side than the partition wall (14). Preferred.

The principle of use of the low pressure suction / discharge device of the present invention is basically the same as that of the conventional example of FIG. That is, when the inside of the suction pressure setting section (1) is made to have a negative pressure by suction with the suction pump (25) or the like, if the pressure becomes higher than the water column h of the sterile water previously supplied, the atmosphere becomes a thin tube (3). Is sucked in from the upper opening port (2) and discharged from the lower part, and the pressure regulation chamber is always maintained at the water column pressure h. The upper part of the water sealing part (11) is in gas communication with the suction pressure setting part (1), and the bottom part is filled with sterile water for preventing backflow of air to the patient's thoracic cavity, The inside of the liquid collecting part (21) is maintained at a negative pressure through this water seal with sterile water, and a suction force is applied to the wound inside the patient via the connecting pipe (24).

Here, in the case of the low-pressure suction / discharge device of the present invention, since the small chamber of the suction pressure setting section (1) is divided into two, the air released from the lower part of the thin tube (3) is small.
Is raised as a continuous bubble in the small chamber (4) adjacent to the above, and the water surface is largely shaken, but the other small chamber (5) is not affected by the swing of the water surface due to the continuous bubble. Therefore, a scale for reading the water column h is provided to the small chamber (5) which is not affected by the open cell, and the lower part of the partition (6) is made lower so that the small chamber (4) is located at a position where the bubble does not pass. ) And (5) are desirably communicated. Furthermore, partition walls (6)
May be connected to the bottom surface of the small chamber, and a small hole may be provided in a portion near the bottom surface to communicate the two small chambers.

As described above, the operation state of the low-pressure suction / discharge device of the present invention during suction / discharge is the same as that of the conventional example of FIG. 2 in which the conventional triple bottle method is used as one unit. In reading the degree of negative pressure generation in the chest (intrathoracic pressure) or the set suction pressure in the above, by looking at the surface of sterile water in the small chamber (5) of the suction pressure setting unit (1),
The scale can be easily read correctly with almost no influence of bubbles.

[0014]

As described above, the low-pressure suction / discharge device according to the present invention is provided with the suction pressure setting section that allows the suction pressure to be read at a glance, so that the body cavity can be safely and easily managed while performing postoperative management. Can be discharged at a low pressure.

[Brief description of the drawings]

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

FIG. 2 is a view showing a structure of a conventional low-pressure suction / discharge device of a three-bottle method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction pressure setting part 2 Upper opening port 3 Thin tube 4, 5, 13 Small chamber 6, 14, 23 Partition wall 7, 24 Connecting pipe 8 Outlet 11 Water seal part 12 Thin tube part 14 Partition wall 15 Float 16 Positive pressure relief valve 21 Liquid collection Part 25 Suction pump

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A61M 1/00

Claims (4)

(57) [Claims] 1. A suction pressure setting unit having a pressure adjustment chamber connected to a suction source, a water sealing unit having a water sealing chamber in gas communication with the suction pressure setting unit, and the water sealing unit. In a bodily fluid discharge device comprising a liquid collecting portion having a liquid storage chamber provided with a bodily fluid inlet at the top, the suction pressure setting portion is open at the upper end to the atmosphere by a partition and the lower end is near the bottom surface. The watertight part is divided into a thin tube part and a small chamber having a float capable of closing the passage at the top by a partition wall. A medical low-pressure suction / discharge device characterized by the above-mentioned. 2. The medical device according to claim 1, wherein the lower end of the partition for dividing the small chamber of the suction pressure setting unit into two is located at a position lower than the lower end of the narrow tube adjacent to the small chamber. For low pressure suction and discharge device. 3. The small pressure chamber according to claim 1, wherein a lower end of a partition dividing the small chamber of the suction pressure setting section into two is connected to a bottom surface, and a small hole is provided in a portion near the bottom surface of the partition. The medical low-pressure suction / discharge device according to claim 1. 4. The medical low-pressure suction / discharge device according to claim 1, wherein the liquid collecting part is divided into a plurality of small chambers by a partition.