JP5784325B2 - Breathing circuit water trap - Google Patents

Description

  The present invention relates to a water trap for a breathing circuit.

  In a breathing circuit in a medical device such as a ventilator, unnecessary water (condensate) is generated due to condensation of water vapor contained in a patient's breath. As a device for discharging this unnecessary water to the outside, a water trap for a breathing circuit is widely used. Examples of use of the water trap for the breathing circuit include those provided in the tube of the expiratory system as described in Patent Document 1, for example, and branching from the breathing circuit as described in Patent Document 2, for example. And a tube provided to the gas sensor.

  A water trap for a breathing circuit is generally composed mainly of a connector with a water stop valve and a water storage cup. When the water storage cup is attached, the connector with a water stop valve opens the water stop valve and discharges unnecessary water from the breathing circuit to the water storage cup. Further, the connector with a water stop valve automatically closes the water stop valve when the water storage cup is removed.

  Such a water trap for the breathing circuit can store unnecessary water in the breathing circuit and drain the water by removing the water storage cup while maintaining the airtightness of the breathing circuit during use of the ventilator.

Japanese Patent Laid-Open No. 6-23051 JP-A-6-130029

  However, in a conventional water trap for a breathing circuit, an operation of removing a water storage cup, draining and reattaching it must be performed periodically. Furthermore, the amount of unnecessary water must be checked frequently so that unnecessary water does not overflow into the water storage cup and flow back to the breathing circuit. That is, the conventional breathing circuit water trap has a problem that a burden on a manager such as a nurse is large.

  An object of the present invention is to provide a breathing circuit water trap that can reduce the burden on the administrator.

The breathing circuit water trap of the present invention is a breathing circuit water trap used by being disposed in a breathing circuit of a medical device, and is a water stop valve that is connected to the breathing circuit and discharges unnecessary water from the breathing circuit. And a water storage cup for storing the drained unnecessary water, and the water storage cup discharges the stored unnecessary water to the outside. a water outlet for said possess a water sealing section which performs sealing water for the water outlet by utilizing the unwanted water, the water sealing portion, in a state in which the reservoir cup was sealed with connectors the water stop valve, It is a heel trap to which the buttock is fixed .

  ADVANTAGE OF THE INVENTION According to this invention, the administrator's burden by the drainage operation | work of stored water, the confirmation work of the amount of storage, etc. can be reduced.

The figure which shows an example of the structure of the breathing circuit in which the water trap for breathing circuits which concerns on one embodiment of this invention is used The perspective view which shows the external appearance of the water trap for respiratory circuits which concerns on one embodiment of this invention 1 is a first cross-sectional view of a breathing circuit water trap according to an embodiment of the present invention; 2nd sectional drawing of the water trap for respiratory circuits which concerns on one embodiment of this invention

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of a configuration of a breathing circuit in which the breathing circuit water trap according to the present embodiment is used. Here, an example in which a water trap for a respiratory circuit according to the present invention is used in an artificial respiration system is shown.

  The artificial respiration system 100 mainly includes a ventilator 200, a heating / humidifying device 300, a catheter mount 400, a breathing circuit water trap 500, and a plurality of tubes 600 connecting them.

  The ventilator 200 is a device for automatically performing artificial respiration of a patient, and supplies inspiration and discharges exhalation. The warming / humidifying device 300 introduces inhaled air from the ventilator 200, performs heating and humidification, and sends it to the catheter mount 400. The catheter mount 400 supplies warm and humid inhaled air, and sends the patient's exhalation to the ventilator 200 through the breathing circuit water trap 500 by the action of an exhalation valve (not shown). The breathing circuit water trap 500 stores unnecessary water (condensate) generated by coagulation of water vapor contained in exhaled breath.

  FIG. 2 is a perspective view showing the appearance of the breathing circuit water trap 500.

  The breathing circuit water trap 500 is roughly composed of a connector 700 with a water stop valve and a water storage cup 800.

  As shown in FIG. 1, the connector 700 with a water stop valve is connected to the exhalation system tube 600 in the breathing circuit of the artificial respiration system 100, and discharges unnecessary water in the tube 600. In particular, when the heating and humidifying device 300 is arranged in the breathing circuit as shown in FIG. 1, a large amount of condensate of water vapor is generated and a large amount of unnecessary water is generated.

  The water storage cup 800 seals the unnecessary water drain side of the connector 700 with a stop valve, and stores the discharged unnecessary water. In addition, the water storage cup 800 has a drainage port for discharging the stored unnecessary water to the outside, and also has a sealing part that seals the drainage port using the unnecessary water.

  Although the water storage cup 800 may be configured integrally with the connector 700 with a water stop valve, in this embodiment, the water storage cup 800 is configured to be detachable from the connector 700 with a water stop valve. The water storage cup 800 can be removed at the time of cleaning or the like, and can be basically left attached otherwise.

  The breathing circuit water trap 500 preferably has transparency such as a transparent plastic so that the internal state can be visually recognized from the outside.

  FIG. 3 is a cross-sectional view of the breathing circuit water trap 500 in a state where the water storage cup 800 is attached to the connector 700 with a water stop valve. For simplicity of explanation, a state where unnecessary water is stored is illustrated.

  The connector 700 with a water stop valve is roughly composed of a pipe portion 710 and a water stop valve 720.

  The pipe portion 710 is a short pipe member having a V-shaped flow path, and is connected to the tube of the breathing circuit with the bent portion directed downward, and is inserted into the breathing circuit. A flow path 711 that is a hole for discharging unnecessary water is provided in a bent portion of the pipe portion 710. The pipe portion 710 is provided with a cylindrical cup connection portion 712 to which a rubber packing (not shown) is attached so as to surround the water stop valve 720 provided in the flow path 711.

  The valve body 721 of the water stop valve 720 is disposed so as to close the flow path 711 from the inside of the pipe portion 710. The valve rod 722 of the water stop valve 720 protrudes outward from the flow path 711 of the pipe portion 710. The valve rod 722 is fitted with a spring 723 that biases the valve rod 722 in a direction in which the valve body 721 closes the flow path 711.

  The water storage cup 800 is roughly composed of a cup part 810 and a sealing part 820.

  A connector connection portion 811 for connecting to the cup connection portion 712 is provided on the upper portion of the cup portion 810. Further, a drain port 812 for discharging unnecessary water discharged from the connector 700 with a water stop valve and stored in the cup unit 810 to the outside is provided at the bottom of the cup unit 810.

  A drainage side connection portion 813 for connecting a predetermined tube or stopper is provided outside the drainage port 812. The other end of a tube (not shown) connected to the drain side connection portion 813 is opened to, for example, a large container or a drain sink. Here, a bamboo nipple nipple is illustrated as an example of the drain side connection portion 813, but other various connection joints such as a three-way stopcock can be employed.

  In addition, a pipe-shaped member 814 is integrally formed with the drain port 812 inside the drain port 812.

  The sealing portion 820 is a bowl-shaped member that covers the pipe-shaped member 814 of the cup portion 810 from above. The inner diameter of the sealed water portion 820 is slightly larger than the outer diameter of the pipe-shaped member 814, and the height of the sealed water portion 820 is slightly higher than the height of the upper end of the pipe-shaped member 814. Further, the sealing portion 820 covers the pipe-shaped member 814 and has a slight gap at a part of the lower end. Thereby, in the unnecessary water 900 stored in the cup part 810, the part exceeding the height of the pipe-shaped member 814 is discharged to the outside from the drain port 812, and the part not exceeding the pipe-shaped member 814 and the sealing part 820 are discharged. The inside and the outside of the cup part 810 are blocked by filling the gap between the two, and sealing is performed. Further, the upper end of the pipe-shaped member 814 is high enough to secure a sealing depth corresponding to the pressure difference between the discharge side of the water stop valve 720 and the outside of the drain port 812, that is, the sealed water is not cut off in normal use. It is assumed that it has such a sufficient height.

  That is, the combination of the cup part 810, the pipe-shaped member 814, and the sealing part 820 constitutes a so-called trap. Thereby, the water trap 500 for breathing circuits can discharge | emit unnecessary water to the exterior exceeding the height of the pipe-shaped member 814, interrupting | blocking the air inside the water storage cup 800 from the exterior continuously. . In addition, since there is no unnecessary water at the start of use, it is desirable for an administrator to add water in advance.

  Further, the outer upper surface of the water sealing portion 820 is brought into contact with the valve rod 722 of the water stop valve 720 to move the valve body 721 of the water stop valve 720 upward, and from the inner wall of the pipe portion 710 that is a valve seat. It is the height to release. Moreover, the cup connection part 712 of the connector 700 with a water stop valve and the connector connection part 811 of the water storage cup 800 hold | maintain the joining force exceeding the force which arises in the spring 723 of the water stop valve 720 in the connected state. It is configured.

  As described above, the water circuit trap for breathing circuit 500 is configured such that the water stop valve 720 is opened by the water sealing portion 820 in a state where the water storage cup 800 is attached to the connector 700 with the water stop valve. Therefore, a special member for opening the water stop valve 720 can be eliminated.

  FIG. 4 is a cross-sectional view of the breathing circuit water trap 500 in a state where the water storage cup 800 is not attached to the connector 700 with a water stop valve, and corresponds to FIG.

  In the state where the water storage cup 800 is not attached to the connector 700 with the water stop valve, the breathing circuit water trap 500 is in a state in which the sealing portion 820 has no force to push up the valve rod 722, and the water stop valve 720 is closed.

  Therefore, while the water storage cup 800 is removed, the breathing circuit water trap 500 can continuously block the air inside the water storage cup 800 from the outside, and keep the airtightness of the breathing circuit.

  In addition, when it is set as the structure which fixes the sealing part 820 only by the urging | biasing of the force from the valve rod 722, the special member for fixing the sealing part 820 can be made unnecessary, The water storage cup 800 can be easily cleaned. On the contrary, when the sealing part 820 is configured to be fixed by a screw mechanism or the like, the risk of the sealing part 820 being lost can be reduced.

  As described above, the breathing circuit water trap according to the present embodiment has a drain port in the water storage cup, and further has a sealing part that seals the drain port using unnecessary water. Work such as attaching and detaching a water storage cup for draining water can be made unnecessary. Therefore, the breathing circuit water trap according to the present embodiment can reduce the burden on the administrator related to the breathing circuit of the artificial respiration system 100, and can greatly improve the work efficiency.

  In addition, the water trap for the breathing circuit according to the present embodiment can reduce the number of times the water cup is attached and detached, and further can have an integrated configuration in which the water cup can not be attached and detached. Therefore, the ventilator water trap according to the present embodiment can reduce the possibility of air leakage of the breathing circuit due to poor connection of the attachment / detachment portion in the breathing circuit water trap, thereby improving safety and reliability. Can be improved.

  In addition, since the present invention is different from the conventional product only in the structure of the water storage cup, it is easy to use an existing breathing circuit water trap or make a slight change to the conventional breathing circuit water trap. Can be realized.

  In addition, in this Embodiment, although the water sealing mechanism of the trap trap which has arrange | positioned the water sealing part inside the cup was employ | adopted, it is not limited to this. The water trap for a breathing circuit according to the present invention employs various sealing mechanisms such as tube traps such as S traps, P traps, U traps, drum traps, etc., in which a sealing portion is disposed outside the cup. Also good.

DESCRIPTION OF SYMBOLS 100 Artificial respiration system 200 Artificial respirator 300 Heating humidifier 400 Catheter mount 500 Breathing circuit water trap 600 Tube 700 Connector with a water stop valve 710 Pipe part 711 Flow path 712 Cup connection part 720 Water stop valve 721 Valve body 722 Valve rod 723 Spring 800 Water storage cup 810 Cup part 811 Connector connection part 812 Drain port 813 Drain side connection part 814 Pipe-shaped member 820 Sealing part

Claims (5)

A water trap for a breathing circuit that is used in a breathing circuit of a medical device,
A connector with a water stop valve connected to the breathing circuit and draining unnecessary water from the breathing circuit;
A water storage cup that seals the drainage side of the unnecessary water of the connector with the water stop valve and stores the discharged unnecessary water, and
The water storage cup
A drain outlet for discharging the stored unnecessary water to the outside;
Have a, a water sealing section which performs sealing water for the water outlet by using the required water,
The sealing portion is
In the state in which the water storage cup tightly plugs the connector with the water stop valve, it is a trap trap to which the flange portion is fixed.
Water trap for breathing circuit. The buttocks
At least in the state where the water storage cup is sealing the connector with the water stop valve, the outer upper surface is brought into contact with the valve rod of the water stop valve, thereby communicating the inside of the breathing circuit and the inside of the water storage cup.
The water trap for respiratory circuits according to claim 1 . The sealing portion is
Having a sealed depth corresponding to the pressure difference between the discharge side of the water stop valve and the outside of the drain port,
The water trap for respiratory circuits according to claim 1 or 2 . The drain outlet is
Having a connecting part for connecting a predetermined tube or a predetermined stopper;
The water trap for respiratory circuits according to any one of claims 1 to 3 . The water storage cup
It has a configuration that can be attached to and detached from the connector with the water stop valve,
The water trap for respiratory circuits according to any one of claims 1 to 4 .

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