JPH07275358A - Peritoneum dialysis fluid exchanging device - Google Patents

Abstract

PURPOSE:To provide a compact and light-weighted peritoneum dialysis device with higher portability and also provide a peritoneum dialysis fluid exchanging device in which waste fluid can be treated sanitarily and safety is maintained even if one treats the device carelessly. CONSTITUTION:In a peritoneum dialysis fluid exchanging device which injects a dialysis fluid supplied from several fluid-containing bags B2 into and drains it from peritoneum, a heating bag B1 through which a dialysis fluid from the fluid-containing bags B2 passes is provided between the fluid feeding circuits placed from the fluid-containing bags B2 to peritoneum, and the heating bag B1 is provided so that it is pressed between the heater and an air bag 4 in a humidification device 2. An air pump AP is connected to the air bag 4 through an air feeding/exhausting circuit, a waste fluid tank with air-tight cap which stores a waste fluid from peritoneum through the waste fluid circuit, and the waste fluid tank is connected to the air pump AP through an air exhausting circuit which passes through the cap.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peritoneal dialysis in which a dialysate in a bag is systematically injected or discharged into a peritoneal cavity in a dialysis treatment method in which the dialysate is injected or discharged through a catheter inserted into the abdominal cavity. Liquid metabolism device.

[0002]

2. Description of the Related Art As a conventional dialysis device used for peritoneal dialysis, a bag containing a dialysate is hung on a height-adjustable stand, and the opening of the dialysate bag is connected to a catheter via a tube. What is done is well known.

In such a dialysis machine, the amount of dialysate injected into the abdominal cavity depends on the drop of the bag. Therefore, in order to finish the dialysis in a short time, the height of the stand is adjusted to raise the bag to a high position. To increase the dialysate infusion rate.

Therefore, in order to obtain the desired infusion rate,
It is necessary to elevate the dialysate bag near the ceiling in the room, which requires a large stand.

In the treatment at the destination, it is difficult to convey a large stand, and there is a problem that a desired height cannot be obtained.

Further, the height adjustment of the dialysate bag is
Impossible to do during sleep.

After the injection into the abdominal cavity, the bag is carried, an empty bag is placed below when draining the liquid, and the drop causes the liquid to be collected in the bag. At this time, the bag needs to be lowered below the abdominal position of the patient, but in the case of a tatami-mat bed, there is a problem that this drop cannot be sufficiently obtained. It should be noted that an appropriate speed is required also when draining liquid from the abdominal cavity, and if too much time is taken, it will adversely affect the living body.

Further, after the liquid is collected, the liquid in the bag is discharged to the toilet or the like. However, since the bag has a poor sealing function after opening, it is necessary to manage the bag after the liquid is sanitized. It was difficult, and it was necessary to make sure to handle the irresponsible treatment of others.

[0009]

By the way, such dialysis therapy is called intermittent peritoneal dialysis method (IPD) in which infusion and drainage are alternately repeated in the abdominal cavity, and infusion is performed multiple times a day. Patients need to perform this therapy during the day to repeat drainage and to adjust the height of the dialysate bag.

Therefore, a patient desires a dialysis machine capable of performing this peritoneal dialysis during sleep at night, and therefore, automation of the machine is required.

In addition, in order for the patient to perform treatment at the destination, the device must be downsized and the portability must be improved.

If automation of peritoneal dialysis becomes possible,
Absolute safety is required only for use while the patient is sleeping.

It is dangerous to directly feed the liquid with a pump, and the use of water pressure is not preferable because it causes problems such as leakage of water and treatment of discharged water.

Furthermore, when the abdominal fluid is rapidly delivered to the abdominal cavity, adverse effects such as imbalance symptoms are exerted on the living body. Therefore, it is necessary to control the dialysate infusion rate with high accuracy.

There is also a demand for obtaining an appropriate drainage speed at the time of draining and for facilitating the sanitary treatment of the liquid after draining.

The present invention has been made in view of the above circumstances, and enables automatic injection of dialysate with a device equipped with a safety means so that peritoneal dialysis treatment can be performed during nighttime sleep. Also, by controlling the infusion rate systematically, it is possible to prevent adverse effects on the living body such as imbalance symptoms, and to facilitate dialysis treatment at the destination even in social activities, which is highly portable. An object of the present invention is to provide a peritoneal dialysate metabolizer capable of constituting a compact and lightweight peritoneal dialysis device, and further capable of dealing with hygienic management of drainage fluid and irresponsible handling of others.

[0017]

In order to solve the above-mentioned problems, the peritoneal dialysate metabolism device of the present invention is a peritoneal dialysate metabolism for injecting or discharging dialysate supplied from a plurality of replacement fluid bags into the abdominal cavity. In the device, a heating bag for passing dialysate from the replacement fluid bag is provided between the fluid supply circuits from the replacement fluid bag to the abdominal cavity, and the heating bag is sandwiched between a heater provided in a warmer and an air bag. The air bag is connected to an air pump via an air supply / exhaust circuit, and a drain tank with a sealed cap for storing drainage from the abdominal cavity via the drain circuit is provided. A drainage tank is connected to the air pump through an exhaust circuit that passes through the cap, and the air pump is connected to a preset electronic controller to supply and exhaust a circuit to the air bag and to exhaust the air. According to the detection result of the pressure detector provided in the exhaust circuit from the tank, the amount and speed of air sent from the air pump to the airbag, the amount and speed of exhaust from the air bag, or the drain tank. The intake air amount and the intake air velocity are controlled.

Further, a safety valve for discharging the air sent to the air bag at a predetermined limit amount is provided in the air supply / exhaust circuit between the air bag and the air pump, and the safety valve between the drain tank and the air pump is provided. The exhaust circuit may be provided with a safety valve that discharges air sucked into the air pump by a predetermined limit amount.

[0019]

In the above structure, the replacement fluid bag is passed through the heating bag during the injection into the abdominal cavity, and the heating bag heats and keeps the inside of the dialysate solution at a suitable temperature by the heater. Pressure is applied to the heating bag by controlled air supply and exhaust, and the pushing action of the dialysate in the heating bag thereby injects an appropriate amount of dialysate into the abdominal cavity at a controlled delivery rate. be able to.

As described above, in the dialysis apparatus of the present invention, the air amount controlled by the electronic controller is sent from the air pump to the air bag and discharged, and the heating bag is pressurized by the change in the volume shape of the air bag. The amount and rate of infusion of dialysate into the abdominal cavity or the amount and rate of drainage are adjusted accordingly.

By using this air pressure, there is no leakage of water that occurs when water pressure is used, there is no problem even if exhausted air is released to the atmosphere, and air pressure control is easy. It is possible to control the liquid feeding speed and the liquid feeding amount with high precision.

Further, since it is not necessary to inject the dialysate by dropping due to the use of air pressure, a device configuration such as raising the replacement fluid bag to a high place at the time of use becomes unnecessary, and the entire device can be downsized. is there.

Further, drainage from the abdominal cavity can be automatically discharged to a sealed drainage tank, and hygiene management is possible due to the tightness of the drainage tank, and drainage in the tank is disposed. When you do, you can take it out with the tank, open the cap, and spill into the toilet.

Furthermore, the safety valve provided in the air supply / exhaust circuit between the air bag and the air pump releases the air supplied to the air bag at a predetermined limit amount, and the air supply amount to the air bag is set to the limit value. You can keep:

Further, the safety valve provided in the exhaust circuit between the drain tank and the air pump discharges the air sucked into the air pump by a predetermined limit amount, so that the exhaust amount from the drain tank is below the limit value. Can be kept at

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram of the peritoneal dialysate metabolism device of the present invention. FIG. 2 is a perspective view showing a state where the device of FIG. 1 is housed in a case. FIG. 3 is a perspective view showing a state in which the case of FIG. 2 is closed.

In the peritoneal dialysate metabolizer of FIG. 1, a plurality of bags B2, B2 ... Filled with dialysate and sterilized are provided above the warmer 2, and the volume shape is changed by external pressure like a soft bag. The heating bag B1 is installed in the warmer 2.

The warmer 2 has a constant volume inside the chamber case 2a, a heater 3 for controlling the temperature is provided on the lower side of the room, and a pressurizing air bag 4 is provided on the upper side of the room. It is provided. Then, the heating bag B1 described above is installed on the heater 3, and the heating bag B1 is brought into contact with the lower surface of the pressurizing air bag 4 while being pressed.

With such a configuration, the volumetric shape of the air bag 4 is expanded by the amount of change in the air in the air bag 4, whereby the heating bag B1 is pressed and the inside of the heating bag B1 is opened through its opening. The dialysate is sent to the abdominal cavity 8.

Further, since the heating bag B1 is pressed against the heater 3 by the pressure of the air bag 4, the contact property with the heater 3 is improved, and the dialysate in the bag B1 is efficiently heated and kept warm. You can

A weight scale W1 is installed in the lower part of the chamber 2a of the warmer 2, and the weight change of the warmer 2 is measured, and at the same time, this measured value is input to the central controller EC. Are connected.

Further, the remaining dialysate bags B2, B2 ... Which are not accommodated in the warmer 2 are provided above the warmer 2 so that the dialysate in the bag is moved to the warmed bag B1 at the lower position due to the drop. Supply of. The dialysate bag B2, B
The height difference from the heating bag B1 provided in 2 ... is not for obtaining the pressure for injecting the dialysate into the abdominal cavity 8, but for supplying the dialysate in the dialysate bags B2, B2 ... to the heating bag B1. Dialysate bag B2, B as it is only for
2 ... may be installed slightly above the heating bag B1.

These dialysate bag B2, B2 ... The respective open ports are connected to each other, and the open ports of the warming bag B1 in the warmer 2 are passed through the tube T1 and the tubes T2, T3 ( The tubes T1, T2, and T3 form a liquid feeding circuit), and are connected so as to feed the liquid to the patient side.

The tube T2 to the patient side is branched into tubes T3 and T4 at a branch 6 on the way, and the end of the tube T3 side is connected to a catheter 5 which is inserted into the abdominal cavity 8 of the patient. A cap 7 whose end is opened and closed in a drainage tank DB made of a hard hollow container is passed in an airtight state and inserted into the drainage tank DB.

A weight scale W2 is also installed under the drainage tank DB, and is connected so as to measure the weight change of the drainage tank DB and input the measured value to the central controller EC at the same time.

The above-described weight scale W1 of the warmer 2 and the weight scale W2 of the drainage tank DB are not separate components as shown in the drawing, but are constituted by one load cell, and central control is performed by the operation chance. You may make it measure by classification with the container EC.

A solenoid valve V1 is provided in the tube T1 between the dialysate bags B2, B2 ... And the heating bag B1, and a tube between the heating bag B1 in the warmer 2 and the branch 6 is provided. An electromagnetic valve V2 is provided at T2, and an electromagnetic valve V3 is provided at a tube T4 between the branch 6 and the drainage tank DB. These solenoid valves V1, V2, and V3 are attached so as to pinch each tube from the outer circumference, and all are connected to the central controller EC. The solenoid valves V1 and V
As for 2 and V3, one motor may be used, and these three valves may be opened and closed by adjusting the rotation angle of one motor shaft.

The opening of the air bag 4 is connected to an air pump AP via a tube T5 which is a supply / exhaust circuit. In the middle of the opening, a safety valve PS1, a pressure detector P1 and an air release valve V4 are sequentially installed. Are connected. this house,
The safety valve PS1 operates when the passing air pressure in the tube T5 becomes equal to or higher than the limit value and releases the passing air in the tube T5, and the pressure detector P1 operates as a central controller E.
The pressure detection value in the tube T5 connected to the safety valve PS1 and the air pump AP is connected to the central controller E.
Always input to C.

Further, at the cap port of the drainage tank DB,
A tube T6 which is an exhaust circuit having an end portion hanging down is connected to the inside of the bottle, and the tube is connected to an air pump AP. A safety valve PS2, a pressure detector P2, and an air release valve V5 are sequentially connected in the middle of the tube T6. Of these, the safety valve PS2 is a tube T6.
When the passage air pressure in the tube T6 exceeds the limit value, it operates so as to release the passage air in the tube T6. The pressure detector P2 is connected to the central controller EC, and the safety valve PS2 is connected.
The detected pressure value in the tube T6 between the air pump AP and the air pump AP is constantly input to the central controller EC.

The device having the circuit structure as described above operates as follows.

When the solenoid valve V1 is actuated to close the tube T1, the solenoid valve V2 is opened and the solenoid valve V3 is closed, the dialysate from the warming bag B1 in the warmer 2 is transferred to the tube T2, It is injected into the abdominal cavity 8 via the catheter 5 via T3.

At this time, in the warmer 2, the air bag 4
The volume is increased by the inflow of air into the heating bag B1.
The pressure is applied so that the injection rate of the dialysate into the abdominal cavity 8 and the necessary injection pressure can be obtained.

The inflow of air into the air bag 4 is sent by the air pump AP. The ultimate pressure at that time is detected by the pressure detector P1, the detection result is sent to the central controller EC, and the operations of the air release valve V4 and the air pump AP are controlled by the central controller EC, whereby the air bag 4 is released. To obtain a safe pressure in the living body.

When the passing air pressure in the tube T5 exceeds the limit value, the safety valve PS1 operates and the tube T5
The passing air inside is released, which limits the absolute pressure of the air bag 4.

The amount of dialysate injected into the abdominal cavity 8 from the heating bag B1 is determined by the weight scale W provided at the bottom of the heating bag B1.
1, the signals such as the limit of the designated instruction amount and the insufficient weight are constantly sent to the central controller EC, thereby controlling the amount of air sent to the air bag 4.

After the dialysate in the warming bag B1 is delivered, the solenoid valve V2 is closed to stop the delivery to the abdominal cavity 8, while the solenoid valve V1 is opened, the dialysate bags B2 and B2 located at the upper position. It is possible to replenish a fixed amount of dialysate in the heating bag B1.

The expanded portion due to the replenishment of dialysate into the warming bag B1 is a tube T communicating with the opening of the air bag 4.
Adjustment is performed by reducing the volumetric shape of the air bag 4 by opening the atmosphere with the air release valve V4 provided in 5 or by forced suction with the air pump AP.

In this way, the fixed amount of dialysate contained in the heating bag B1 is heated and kept warm by the heater 3 after a certain period of time to prepare for the next injection into the abdominal cavity 8.

The dialysate left in the abdominal cavity 8 for a certain time is
The electromagnetic valve V2 is closed and the electromagnetic valve V3 is opened according to the operation instruction of the central controller EC, and the liquid is discharged to the drainage tank DB through the tubes T3 and T4.

The opening of the drainage tank DB is the cap 7
And the inside of the drainage tank DB is connected to the suction side of the air cap AP via a suction tube T6 that acts on negative pressure. However, even in such a suction circuit, since the suction pressure affects the abdominal cavity 8, the safety valve PS2 for operating at the safety limit, the pressure detector P2 for detecting and controlling the limiting pressure, and the air suction valve. It is equipped with V5 and can be operated by the command of the central controller EC as described above.

The balance between the verification of the amount of drainage from the drainage tank DB and the replenishment liquid can be detected by the weight scale W2 below the drainage tank DB and controlled by the central controller EC.

The central controller EC constitutes a system programmed to give a specified operation to the above-mentioned circuit configuration, has an operation panel for artificially setting conditions, and exceeds a malfunction or a safe range. In case of limitation, it is designed to give an alarm signal.

In the peritoneal dialysate metabolism device configured and operated as described above, each component device can be compactly housed in the housing case 10 and provided for portable stool as shown in FIG.

In FIG. 2, the warming device 2 and the drainage tank DB are accommodated on the main body side of the accommodation case 10, and the central controller EC and the air pump AP are accommodated on the opening / closing lid 11 side.

In such a housing case 10, replacement bags B2, B2 ... Are provided on the upper portion of the air pump AP and the like.
A space can be provided to store the

A storage tube 14 into which the stand 9 is inserted is fixedly provided at the opening / closing portion of the storage case 10. The stand 9 is placed on the storage tube 14 with the storage case 10 standing up as shown in FIG. Insert and hang the dialysate bags B2, B2 ... At a position slightly higher than the position of the warmer 2. in this case,
The stand 9 can be housed in the housing case 10 during movement, which is convenient for transportation. A retractable stand may be attached to the position of the storage tube 14.

[0058]

As described above, in the peritoneal dialysate metabolism device of the present invention, the dialysate from the replacement fluid bag is passed through the heating bag, and the dialysate is delivered from the heating bag to the abdominal cavity. The amount and the injection speed can be controlled by the pressurizing action of the air bag, and the air bag can use safe and highly accurate automatic control by utilizing the air pressure whose pressure can be easily controlled.

Therefore, the patient can safely perform peritoneal dialysis treatment during sleep at night by using the automatically controlled dialysis device, and enables indirect safety control to be given to the living body, as in the conventional case. It is possible to inject the dialysate into the abdominal cavity at an appropriate amount and at a suitable rate, which is automatically controlled, regardless of the experience of the user.

Further, in this apparatus, since the dialysate is injected by the change of the air pressure, there is no leakage of water which occurs when the water pressure is used, and the discharged air can be discharged to the atmosphere as it is.

Further, since the heating bag is pressed against the heater by the pressure of the air bag, the contact property with the heater is improved, and the dialysate in the bag can be efficiently heated and kept warm.

Further, unlike the conventional case, there is no trouble of raising the replacement fluid bag and the mounting position of the replacement fluid bag may be kept at a slight height from the heating bag, so that the stand can be downsized. Thus, the dialysis device which is compact and has excellent portability can be configured by disposing the constituent device in the accommodation case.

Further, since the drainage fluid from the abdominal cavity can be forcibly discharged to the sealed drainage tank, the leaktightness of the drainage tank prevents leakage of the urine components inside, and after the treatment, the storage case thereof. It is possible to obtain a convenient and highly practical dialysis device, such as taking out sanitary hygiene and flushing it to the toilet.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of a peritoneal dialysate metabolism device of the present invention.

2 is a perspective view showing a state in which the device of FIG. 1 is housed in a case.

FIG. 3 is a perspective view showing a state where the case of FIG. 2 is closed.

[Explanation of sign]

 2 ... Heater 3 ... Heater 4 ... Air bag 5 ... Catheter 6 ... Branch 7 ... Cap 8 ... Abdominal cavity B1 ... Heating bag B2, B2 ... Replacement fluid bag AP ... Air pump EC ... Central controller T1, T2, T3 , T4, T5, T6 ... Tube DB ... Drainage tank W1 ... Weigher scale W2 ... Drainage tank scale V1, V2, V3 ... Solenoid valve V4, V5 ... Air release valve PS1, PS2 ... Safety valve P1 , P2 ... Pressure detector

Claims (2)

[Claims] 1. In a peritoneal dialysate metabolism apparatus for injecting or discharging dialysate supplied from a plurality of replacement fluid bags into the abdominal cavity, the dialysate from the replacement fluid bag is passed between the fluid supply circuits from the replacement fluid bag to the abdominal cavity. A heating bag is provided, and the heating bag is installed so as to be pinched between the heater provided in the warmer and the air bag, and an air pump is connected to the air bag via an air supply / exhaust circuit. Further, a drainage tank with a closed cap for storing drainage from the abdominal cavity via a drainage circuit is provided, and the drainage tank is connected to the air pump via an exhaustion circuit passing through the cap, The pump is connected to a preset electronic controller, and the air pump is detected by the pressure detector provided in the air supply / exhaust circuit to the air bag and the exhaust circuit from the drain tank. From the air bag to the air bag, the air flow rate and the air exhaust rate from the air bag, or the air flow rate and the air intake rate from the drainage tank are controlled. Dialysis fluid metabolism system. 2. A safety valve for discharging a predetermined amount of air sent to the air bag is provided in a supply / exhaust circuit between the air bag and the air pump, and a safety valve is provided between the drain tank and the air pump. The peritoneal dialysate metabolism device is characterized in that the exhaust circuit is provided with a safety valve for releasing the air sucked into the air pump by a predetermined limit amount.