JP2003290341A - Peritoneal dialysis solution feeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a peritoneal dialysis solution feeding apparatus allowing a user to change a bag decently without worrying about another person's eye. <P>SOLUTION: The peripheral dialysis solution feeding apparatus comprises a compressor 15 for feeding compressed air, and a presser body 7 to expand when receiving the compressed air fed from the compressor 15 for pressing the bag 1. As the presser body 7 expands, the dialysis solution in the bag 1 is forcedly fed into the abdominal cavity B via a tube 3. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a peritoneal dialysate supply device for supplying peritoneal dialysate used in CAPD therapy into the abdominal cavity of a human body.

[0002]

2. Description of the Related Art CAPD (Continuous Ambulatory Peri)
Toneal Dialysis: Continuous ambulatory peritoneal dialysis) is a therapy that purifies the internal blood by injecting a peritoneal dialysate into the abdominal cavity and transferring waste products and water in the blood to the dialysate. This therapy requires less restraint time in the hospital than regular dialysis, and is free to act during storage, which makes it easier to return to work. Is rapidly spreading as.

[0003] In CAPD, it is indispensable to perform the drainage / injection work of dialysate called so-called bag exchange about four times a day. Specifically, as shown in FIG. 3, an empty bag and a replacement bag 1 containing new dialysate.
Are connected to the catheter 2 buried in the abdomen through the tube 3, and the dialysate containing waste products contained in the abdominal cavity B is drained to the empty bag 30 and then the replacement bag 1 To inject a new dialysate in the abdominal cavity B,
Must be done every ~ 8 hours.

[0004]

In such bag replacement, the replacement bag 1 is placed at a position about 1 m higher than the patient's abdomen, and the dialysate is fed into the abdominal cavity B by the drop. For this reason, it is inevitable that the bag 1 will appear on the front, and at school, at work, or on a flight or on a business trip, you should change the bag without being exposed to the curiosity of the surroundings. It was difficult to do and this task was a great psychological burden for the patient.

Further, when the bag is replaced while the vehicle is being driven, the replacement bag 1 may be pushed by the hand or the buttocks to forcibly inject the dialysate into the abdominal cavity B. However, as a result of applying excessive pressure to the bag 1, accidents such as disconnection of the connection between the tube 3 and the catheter 2 and spillage of dialysate and soiling of clothes are likely to occur. As a means to solve this,
It is considered that the dialysate is pumped up by a pump and injected into the abdominal cavity B, but in this case, maintenance work such as disinfection and sterilization of the pump is required separately,
It imposes a new burden on the patient.

An object of the present invention is to make it possible to carry out the liquid injection work inconspicuously while the bag is placed under the desk or on the knee, and therefore the appearance can be done without worrying about the surrounding eyes. An object of the present invention is to provide a peritoneal dialysis fluid supply device that can facilitate bag exchange. The object of the present invention is to disinfect / machine the mechanical element while providing the dialysate with the mechanical element.
It is an object of the present invention to provide a new peritoneal dialysate supply device that does not require any maintenance work such as sterilization and does not impose a new patient burden. It is an object of the present invention to provide a peritoneal fluid dialysis supply device which has a simplified structure and can reduce the cost of the entire device.

[0007]

According to the present invention, as shown in FIGS. 1 and 2, a peritoneal dialysate contained in a flexible bag 1 is connected to a catheter 2 implanted in the abdomen. The target is a peritoneal dialysate supply device for supplying the human peritoneal cavity B through the tube 3. This peritoneal dialysate supply device is a device main body 4 for detachably accommodating and holding the bag 1.
Have. A compressor 15 that sends out compressed air and a pressing body 7 that expands by receiving the compressed air supplied from the compressor 15 and presses the bag 1 inside the apparatus body 4.
A sensor 20 for detecting the air pressure in the pressing body 7, a valve body 21 capable of releasing compressed air in the pressing body 7, a preset threshold value, and a detection signal from the sensor 20. Based on the control of the compressor 15, the control unit 17 for adjusting the degree of pressing of the pressing body 7 against the bag 1
And each are incorporated. The pressing body 7 receives compressed air from the compressor 15 and expands, so that a flow pressure that pushes the dialysate out of the bag 1 can be applied to the bag 1.

Specifically, the valve body 21 is used as an electromagnetic valve so that a transition is made between a closed state in which the compressed air from the compressor 15 is stored in the pressing body 7 and an open state in which the air in the pressing body 7 is released. To The pressing body 7 can be a balloon made of an elastic material.

[0009]

According to the peritoneal dialysate supply device of the present invention, when the compressor 15 is driven in response to the control signal from the controller 17, the pressing body 7 receives compressed air from the compressor 15 and receives the compressed air. It expands gradually. Then, due to the expansion of the pressing body 7, a flow pressure that pushes the dialysate into the bag 1 is applied, so that the dialysate can be forcibly injected into the abdominal cavity B. That is, in the past, the liquid injection work, which was based on the height difference between the abdomen of the patient and the height position of the bag 1, was performed regardless of the height position of the bag 1.
It is possible to proceed with the apparatus main body 4 placed on the knees or under the desk. Therefore, as shown in FIG. 3, it is possible to minimize the appearance of the replacement bag 1 which is inevitable in the conventional bag replacement posture, and to carry out the bag replacement cleanly without worrying about the surrounding eyes. You can

The preset threshold value and the sensor 2
Compressor 15 based on comparison with detection signal from 0
When the pressing degree of the pressing body 7 with respect to the bag 1 is controlled to be large or small by controlling the pressure, there is no problem that an excessive pressing force is applied to the bag 1 and the connecting portion between the tube 3 and the catheter 2 is disconnected. . Further, if the threshold value can be changed on the patient side, the pressing degree can be adjusted to be large or small, and the liquid injection speed and the time required for the liquid injection work can be arbitrarily changed.

When the dialysate is pumped up by a pump, various bacteria may accumulate inside the dialysate.
Maintenance work such as sterilization is separately required, which incurs a great burden on the patient. In this respect, according to the peritoneal dialysate supply device of the present invention, the dialysate does not come into contact with the mechanical elements at all, maintenance work is unnecessary, and it is excellent in practical convenience.

The peritoneal dialysate supply device according to the present invention comprises a compressor 15 and a pressing body 7 as main components,
Since the structure is extremely simple, there is also an advantage that it can be manufactured at low cost.

[0013]

1 and 2 show an embodiment of a peritoneal dialysate supply device according to the present invention. In FIG. 1, this supply device is connected to a bag 1 containing a replacement peritoneal dialysate (hereinafter, simply referred to as dialysate), and a catheter 2 extending from the bag 1 and implanted in the abdomen of a patient. Tube 3
And a device body 4 for accommodating the bag 1. Bag 1
Is made of a flexible resin, and the tube 3 is led out from one end thereof. A connection tube 5 for attaching and detaching the catheter 2 is attached to the tip of the tube 3.

The apparatus main body 4 has a main body case 6 in which upper and lower cases 6a and 6b are openably and closably joined via a hinge (not shown), and the bag 1 and the bag 1 are pressed into the main body case 6. The pressing body 7 and the control unit 8 are incorporated. A chamber 9 for incorporating the bag 1 is provided in the main body case 6, and the bag 1 is incorporated in the chamber 9 while being covered with the pressing body 7. The lower case 6b is provided with a recessed groove 11 in a recessed shape, and the tube 3 is led out to the outside through the recessed groove 11 when the main body case 6 in which the upper and lower cases 6a and 6b are fitted together is closed. In FIG. 1, reference numeral 12 indicates a sealing piece that closes the groove 11 when not in use.

The pressing body 7 is a band-shaped balloon made of an elastic material, and receives compressed air from the compressor 15 built in the control unit 8 to expand. Pressing body 7
Has a width dimension and a length dimension around the waist of the bag 1 so that the bag 1 can make one round. Also, the pressing body 7
The surface fasteners 13 are fixed to the inner and outer surfaces of the bag 1. After the pressing body 7 is wrapped around the bag 1, the pressing body 7 is
By engaging the surface fasteners 13 in the overlapping portions, the pressing body 7 can be securely fixed to the surface of the bag 1.

The control unit 8 has a rectangular box-shaped plastic housing, and controls the compressor 15 for sending compressed air toward the pressing body 7 through the hose 16 and the entire apparatus. The unit 17 and a power source 18 such as a battery are provided. Various switches 19 such as a power button are provided on the upper surface of the housing of the control unit 8. Room 9
The hose 16 is delivered from one wall surface of the housing facing the.

The compressor 15 is a small pump used in a blood pressure monitor or the like, which produces compressed air and discharges the compressed air to the pressing body 7 via the hose 16. Hose 7
A sensor 20 for detecting an air pressure and a valve body 21 are connected to each other, and the sensor 20 detects the air pressure in the hose 16, that is, the air pressure in the pressing body 7. Sensor 2
The detected value from 0 is sent to the controller 17 after being digitized by the amplifier 22. The valve body 21 is an electromagnetic valve, and is opened / closed by a control signal from the control unit 17.
The sensor 20 and the valve body 21 are also incorporated in the control unit 8.

The control unit 17 is a CPU (central integrated device).
And a ROM for storing the control program and a RAM. The RAM stores a preset threshold value relating to the air pressure in the pressing body or a threshold value set by the user.

Next, the procedure of bag replacement work using the peritoneal dialysate supply device according to this embodiment will be described. First, the patient connects the empty bag tube to the catheter 2 and drains the liquid containing waste products contained in the abdominal cavity B. When all the liquid in the abdominal cavity B is discharged, the patient replaces it with the catheter 2. The tube 3 of the bag 1 is connected. However, in the case of the twin bag in which the replacement bag 1 and the empty bag 30 are integrally connected by the tube 3 as shown in FIG. 3 according to the prior art example, the replacement bag 1 No connection work is required.

Before and after connecting the replacement bag 1 to the catheter 2, the patient stores the bag 1 in the chamber 9 of the main body case 6. At this time, the circumference of the bag is covered with the pressing body 7, and the surface fastener 13 is used to firmly fix the bag. Next, the patient turns on the switch 19 of the power source, and then closes the main body case 6. At this time, the tube 3 is positioned so as to be drawn out of the main body case 6 via the concave groove 11.

When the power switch 19 is turned on,
The control unit 17 closes the valve body 21 so that air is stored in the pressing body 7, and at the same time, the control unit 17 controls the compressor 1
5 is driven to send compressed air into the pressing body 7. As a result, the pressing body 7 expands.

The pressing body 7 is securely fixed around the waist of the bag 1 by a surface fastener 13. Therefore, the expansion force of the pressing body 7 acts in the inward direction of crushing the bag 1,
As a result, a flow pressure that pushes the dialysate in the bag 1 out of the tube 3 is applied to the bag 1. That is, since the dialysate in the bag 1 can be forcibly supplied into the abdominal cavity B through the tube 3 as the pressing body 7 expands, for example, the device main body is placed on the patient's knee or under the desk. It is possible to proceed with the dialysate injection work with the posture of 4 being placed. Therefore, the bag 1 which is inevitable in the conventional bag exchange posture
The appearance of the bag can be minimized and the bag can be exchanged cleanly without worrying about the surrounding eyes.

If the pressing force of the pressing body 7 against the bag 1 is excessive, the connection between the tube 3 and the catheter 2 is disconnected, and the dialysate is likely to spill out. Therefore, in the present invention, a sensor 20 for monitoring the air pressure in the pressing body 7 is provided, and the compressor 15 is on / off controlled so that the detection value of the sensor 20 does not exceed a preset threshold value. This prevents the body 7 from being excessively pressed against the bag 1.

In addition to the standard value preset at the time of factory shipment, the threshold value can be changed to a predetermined value desired by the patient by a setting change operation using the switch 19. This makes it possible to arbitrarily adjust the injection speed / time on the patient side, which also makes the device easy to use.

When the dialysate in the bag 1 becomes empty and the patient turns off the power switch 19, the control unit 1
7 opens the valve body 21 and shifts to an open state in which the air in the pressing body 7 escapes. The patient can take out the empty bag 1 by releasing the surface fastener 13 of the pressing body 7. If necessary, the next replacement bag 1 may be mounted in the main body case 6.

The structure of the pressing body 7 is not limited to the structure described in the embodiment, in short, as long as the compressed air from the compressor 15 is received in the main body 4 of the apparatus, the bag 1 can be pressed from the outside. Good. For example, a bellows type expands in one direction
The pressing body 7 can be configured using a stretchable balloon as an element. The pressing body 7 may be integrally attached to the apparatus body 4.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of a peritoneal dialysate supply device according to the present invention.

FIG. 2 is a block diagram showing a control system of the peritoneal dialysate supply device according to the present invention.

FIG. 3 is a diagram for explaining a bag exchange operation in a conventional CAPD.

[Explanation of symbols]

1 bag 2 catheter 3 tubes 4 Device body 7 Pressing body 15 Compressor 17 Control unit 20 sensors 21 valve

Claims (3)

[Claims] 1. A peritoneal dialysate supply for supplying a peritoneal dialysate filled in a flexible bag 1 into a human abdominal cavity B via a tube 3 connected to a catheter 2 embedded in the abdomen. The device is a peritoneal dialysate supply device having a device main body 4 for detachably accommodating and holding the bag 1. The compressor 15 sends out compressed air and the compressed air supplied from the compressor 15 expands the device. A pressing body 7 that presses the bag 1, a sensor 20 that detects the air pressure in the pressing body 7, a valve body 21 that can release the compressed air in the pressing body 7, and a preset threshold value, The compressor 15 is controlled based on the comparison with the detection signal from the sensor 20,
Each of the control unit 17 for adjusting the pressing degree of the pressing body 7 to the bag 1 is incorporated in the apparatus main body 4, and the pressing body 7 receives compressed air from the compressor 15 and expands, so that the dialysis is performed. A peritoneal dialysate supply device, characterized in that a flow pressure for pushing the liquid out of the bag 1 can be applied to the bag 1. 2. The valve body 21 is an electromagnetic valve, and a transition is made between a closed state in which the compressed air from the compressor 15 is stored in the pressing body 7 and an open state in which the air in the pressing body 7 is released. The peritoneal dialysate supply device according to claim 1. 3. The peritoneal dialysate supply device according to claim 1, wherein the pressing body 7 is a balloon made of an elastic material.