JP3308053B2 - Dialysate exchange device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dialysate exchange device used for peritoneal dialysis.

[0002]

2. Description of the Related Art In recent years, a treatment method using peritoneal dialysis has been compared with a dialysis method using an artificial kidney in that the equipment and instruments are small and simple, the treatment cost is low, and peritoneal adhesion can be prevented. Attention has been paid to such reasons as the burden on patients is small.

[0003] Among the peritoneal dialysis methods, in particular, continuous ambulatory peritoneal dialy- sis.
sis (hereinafter, referred to as "CAPD") has attracted much attention because it allows patients to exchange dialysis fluid containers (bags) at home or at work, thereby easily returning to society.

In this CAPD, a catheter tube (peritoneal catheter) is placed in the abdominal cavity of a patient, a transfer tube is connected to the outer end of the catheter tube, and a dialysate bag (dialysis solution bag) containing a dialysate is placed in the catheter tube.
After injecting the dialysate in the bag into the peritoneal cavity through each tube and performing dialysis for a predetermined time, collecting the dialysate drainage in the peritoneal cavity into the drainage bag through each tube Is what you do. The connections between the tubes are made aseptically by fitting male and female connectors attached to the ends of both tubes, respectively.

In the CAPD, the dialysate is injected into the peritoneum by placing the dialysate bag approximately 1 m above the abdomen of the patient, and the dialysate is transferred from the dialysate bag into the peritoneum by the drop. are doing. For collecting the dialysate drain from the peritoneum, the drain bag is placed at a position about 1 m lower than the patient's abdomen, and the dialysate is transferred from the peritoneum to the drain bag by its head.

However, such a dialysate injection,
In the drainage method, for example, when a patient performs peritoneal dialysis while sleeping, the patient is placed on a bed at a height of about 70 to 100 cm from the floor, and a dialysate bag is set at a position about 1 m higher than the patient. Therefore, the height of the entire apparatus is as large as about 2 m, which makes it difficult to handle and transport the apparatus, and may cause the apparatus to fall down by a sleeping patient or the like. Further, there is a disadvantage that the bed position (height) of the patient cannot be freely selected in order to secure a head required for drainage.

In order to recover the drainage, a method is known in which the dialysate in the peritoneum is directly suctioned by a roller pump to recover the drainage without transferring the drainage by head. According to the method, the roller pump rotates at a constant rotation speed regardless of the amount of drainage, and forcibly sucks the drainage. There is a possibility of being drawn into the inner wall, and there is a safety problem.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dialysis fluid exchange device which can safely exchange dialysis fluid with a small device without being restricted by a positional relationship with a patient. It is in.

[0009]

This and other objects are attained by the present invention which is defined below as (1). In addition, the following (2)-
(11) is preferred.

(1) At least one of the dialysis fluids
Two dialysate containers, a container that is extendable and retractable and can suck liquid therein by a restoring force from a contracted state, container shrinking means for shrinking the container, and at least one drainage collection container for collecting dialysate A first flow path having one end communicating with the drainage collection container and the other end communicating with the container, and one end communicating with the container and the other end communicating with a catheter placed in the patient. A second flow path, one end of which communicates with the dialysate container, and the other end of which communicates with the first flow path or the second flow path; A flow path opening / closing means capable of opening and closing the flow path and the middle of the third flow path, and a control means for controlling opening / closing of each flow path by the flow path opening / closing means and operation of the container shrinking means. Characteristic dialysate exchange device.

(2) The dialysate exchange device according to the above (1), wherein the container shrinking means is a pressure reducing means for reducing the pressure inside the container.

(3) The dialysate exchange device according to (1), wherein the container shrinking means is a roller pump installed in the middle of a flexible tube forming the first flow path.

(4) The dialysate exchange device according to (3), wherein the roller pump is detachably mounted on the tube.

(5) The dialysate exchange device according to any one of (1) to (4), wherein the container has a bellows shape.

(6) The first flow path, the second flow path, and the third flow path are formed in a lumen of a flexible tube. The dialysate exchange device according to any one of the above (1) to (5), which can close the dialysate.

(7) The above (1) to (6) having a storage container for temporarily storing the dialysate in the dialysate container.
The dialysate exchange device according to any one of the above.

(8) The dialysate exchange device according to any one of (1) to (7), further comprising a heating means for heating the dialysate.

(9) The dialysate exchange device according to any one of (1) to (8), further comprising a detecting means for detecting a liquid amount in the container.

(10) The dialysate exchange device according to the above (9), wherein the detecting means is a weight detecting means for detecting a weight of the container.

(11) The dialysate exchange device according to any one of the above (1) to (10), further comprising a container expansion / contraction degree detecting means for detecting the expansion / contraction degree of the container.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a dialysis fluid exchange apparatus according to the present invention.

FIG. 1 is a front view schematically showing a configuration example of the dialysate exchange device of the present invention, and FIG. 2 is a circuit configuration diagram of the blood processing device shown in FIG. The dialysate exchange device 1A shown in these figures is a device for injecting dialysate into a patient's peritoneum and collecting the drainage when performing peritoneal dialysis, and a plurality of dialysate bags filled with dialysate. (Dialysis fluid container) 2a, 2
b, 2c, 2d, 2e, a storage container 3 for temporarily storing dialysate, and drainage of dialysate (hereinafter simply referred to as “drainage”)
Container 4 for temporarily storing the container, a roller pump 5, and a container elasticity detecting unit 6 for detecting the elasticity of the container 4
A plurality of drainage bags (dialysate collection containers) 7a, 7b, 7c for collecting drainage, and tubes 8 to 22, which connect the bags, the storage container 3 and the container 4 in a predetermined arrangement.
It has connectors 51 to 54 and connection members 23 to 28, flow path opening / closing means 36 to 42 capable of opening and closing a flow path formed in a predetermined tube, a control means 30, and an operation unit 55.

The dialysate bags 2a, 2b, 2c, 2d, 2
Each of e is formed by molding a sheet material made of a resin such as soft polyvinyl chloride into a bag shape, to which bag tubes 8 communicating with the inside of the bag are connected. Each dialysate bag 2a, 2b, 2c, 2
The d and 2e are hung by a hanger 56 at a position higher than the storage container 3 to be described later by, for example, about 0.3 to 1 m, with the side to which the bag tube 8 is connected facing downward.

The dialysate bags 2a, 2b, 2c and 2d are filled with dialysate having the same composition, respectively.
The dialysate bags 2a, 2b, 2
A dialysate having a different composition or concentration from the dialysate in c and 2d (final dialysate) is filled.

One end of each of the tubes 9 and 10 is detachably connected to each bag tube 8 via a connector 51, and the other end of each tube 9 is connected to one end of the tube 11 via a connecting member 23. Have been. One end of the tube 12 is connected to the storage container 3, and the other end of the tube 12 is detachably connected to one end of the tube 13 via the connector 52. The other ends of the tubes 10 and 11 are connected to the other end of the tube 13 via a connection member 24.

Each of the drainage bags 7a, 7b and 7c is formed by molding a sheet material made of resin such as soft polyvinyl chloride into a bag shape, and includes a bag tube communicating with the inside of the bag. 14 are respectively connected. The drainage bags 7a, 7b, 7c are stacked with the side to which the bag tube 14 is connected being aligned in the same direction.

One end of a tube 15 is detachably connected to each bag tube 14 via a connector 53, and the other end of each tube 15 is connected to one end of a tube 16 via a connecting member 25. . The other end of the tube 16 is connected to the other ends of the tubes 10, 11 and 13 and one end of the tube 17 via a connection member 24. The other end of the tube 17 is connected to one end of tubes 18 and 19 via a connecting member 26. In the middle of the tube 17, a roller pump 5 which is a container shrinking means, particularly a pressure reducing means is provided.

One end of a tube 20 is connected to a port formed at the top of the container 4, and the other end of the tube 20 is
The connection member 21 is connected to the other end of the tube 19 and one end of the tube 21.

The other ends of the tubes 18 and 21 are connected to one end of the tube 22 via a connecting member 28.
The other end of the tube 22 is connected to one end of the transfer tube 29 via a connector 54, and the other end of the transfer tube 29 is connected to a catheter tube (in a peritoneum of the patient 100 via a joint (not shown)). (Not shown).

Each of the connection members 23 to 28 is manufactured by, for example, resin molding, and has a branch flow passage formed therein for communicating with a flow passage in each tube to be connected. Each of the connectors 51 to 54 has a configuration (for example, a double structure) capable of aseptically holding a flow path inside the connector when the connector is attached or detached.

With the above configuration, each flow path through which the dialysate or the drainage flows as shown in FIG. 2 is formed. That is, one end communicates with each bag tube 14, each connector 53, each tube 15, tubes 16, 17, 19, 20 and connecting members 24, 25, 26, 27 in the drainage bags 7 a to 7 c, and the other end. 1 communicates with the inside of the container 4
A catheter in which one end communicates with the container 4 and the other end is indwelled in the peritoneum of the patient 100 by the flow channels 31 formed by the tubes 20, 21, 22, the connecting members 27, 28, the connector 54 and the transfer tube 29. A second flow path 32 communicating with a tube (not shown) is formed, and each bag tube 8, each connector 51, tubes 9, 10, 1
1 and the connection members 23 and 24, a third flow path 33 having one end communicating with the dialysate bags 2a to 2e and the other end communicating with the first flow path 31 is formed, and the tubes 12, 13, the connector 52 and One end of the storage container 3 is connected by the connection member 24.
A fourth flow path (branch flow path of the third flow path 33) 34 is formed, the other end of which is in communication with the third flow path 33. One end of the fourth flow path 34 is formed by the tube 18 and the connection members 26 and 27. A fifth flow path (bypass flow path) 35 communicating with the flow path 31 and having the other end communicating with the second flow path 32 is formed.

The storage container 3 in this embodiment is a bag having flexibility (flexibility). For example, the edge of a soft resin sheet material is fused and formed into a bag. It becomes.

The sheet material constituting the storage container 3 includes:
For example, flexible polyvinyl chloride, polyethylene, polypropylene, polyolefin such as ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (P
ET), polyester such as polybutylene terephthalate (PBT), polyamide, polystyrene, poly-
(4-methylpentene), ionomer, polyurethane-based, polyester-based, polyamide-based, olefin-based, and styrene-based elastomers, or a combination of two or more of these elastomers.

The storage container 3 is not limited to one having flexibility as a whole, but may be partially flexible and may be deformed to change its volume.

The container 4 in this embodiment has a bellows shape that can be extended and contracted. The upper end of this container 4 in FIG.
It is fixed to the apparatus main body via a weight detecting means 44 described later, and the lower end is installed so as to be freely movable in the vertical direction in FIG. When the inside of the container 4 is depressurized by the roller pump 5 described later, the container 4 contracts, and the lower end of the container 4 rises. The liquid can be sucked into the container 4 from the port to which the tube 20 is connected by the restoring force from the contracted state, that is, the force of the container 4 trying to expand.

The container 4 may be made of, for example, soft polyvinyl chloride, polyethylene, polypropylene, polyolefin such as ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), or polybutylene terephthalate (PBT). Polyester, polyamide, polystyrene, poly- (4-methylpentene), ionomer, polyurethane, polyester, polyamide, olefin, styrene, and other elastomers, natural rubber, isoprene rubber, butadiene rubber, nitrile rubber And various rubbers such as chloroprene rubber, fluorine rubber, silicone rubber and latex rubber, or a combination of two or more of these rubbers as appropriate.

The container 4 is not limited to one having its own restoring force. For example, an elastic body (not shown) such as a coil spring is attached to the outer periphery or the end of the container 4 to obtain the restoring force. It may be a configuration.

The capacity of the storage containers 3 and 4 is not particularly limited because it varies depending on the patient's case and various conditions such as the number (capacity) of the dialysate bags and the drainage bags. A container having a capacity of about 100 to 5000 ml, particularly about 500 to 3000 ml, is suitably used, and a container having a capacity of about 30 to 10,000 ml, particularly about 50 to 3000 ml, is suitably used.

Each tube 8 to 22 is flexible (flexible)
Preferably, the constituent materials include, for example, polyvinyl chloride, polyethylene, polypropylene, polyolefins such as EVA, PET, PB
Polyesters such as T, polyurethane, polyamide,
Thermoplastic elastomers such as silicones, polyester elastomers, polyamide elastomers, styrene-butadiene-styrene copolymers, or two of these;
Those obtained by appropriately combining the above are exemplified.

As shown in FIG. 1, the tubes 11, 10,
In the middle of 18, 16, 19, 21 and 13, flow passage opening / closing means 3 for closing / releasing the lumen of the tube, respectively.
6, 37, 38, 39, 40, 41 and 42 are provided. That is, as shown in FIG. 2, the middle of the first flow path 31 is opened and closed by the flow opening and closing means 39 and 40, and the middle of the second flow path 32 is opened and closed by the flow opening and closing means 41. , 37, the middle of the third flow path 33 is opened and closed, the middle of the fourth flow path 34 is opened and closed by the flow opening and closing means 42, and the middle of the fifth flow path 35 is opened and closed by the flow opening and closing means 38.

Each of the flow path opening / closing means 36 to 42 shown in FIG.
For example, it is constituted by a solenoid / pinch valve that closes the tube in a cut-off state.
The opening and closing of the flow path by 42 is controlled by control means 30 described later.

The channel opening / closing means 36 to 42 include:
Other than the above, for example, electromagnetic valves, valves operated by air pressure or hydraulic pressure, valves and cocks that are manually opened / closed, and clamps that normally close the tubes in a normal state and are manually released, etc., can open and close each flow path. Any one may be used.

The roller pump 5 is for allowing the dialysate and the drainage to flow through a predetermined flow path of the circuit shown in FIG. 2, and is an example of a container shrinking means for shrinking the container 4, in particular, depressurizing the inside of the container 4. This is an example of a decompression unit that causes the container 4 to contract by doing so.

The roller pump 5 uses a plurality of rollers (not shown) that rotate and revolve to form a tube 17 (or a pump tube connected to the tube 17) disposed along the arcuate curved surface of the head 50. The fluid in the tube 17 is transferred while being pressed and closed, and any known structure can be used.

The setting of the tube 17 on the roller pump 5 is performed by the user himself, and the operation of manually winding the tube 17 on the roller pump 5 and closing the head 50 is performed on the dialysis patient (fingertip becomes inconvenient). Children and the elderly). Also, the circuit is disposable and needs to be replaced after each use.

For these reasons, the roller pump 5 is
It is preferable that it can be detachably attached to the tube 17. That is, the head 50 of the roller pump 5 can move in the vertical direction in FIG. 1, and when the head 50 is indicated by a solid line in FIG. 1, the fluid in the tube 17 can be transferred by rotation of the roller. The tube 17 can be removed when it moves away from it (indicated by the dashed line).

The roller pump 5 according to the present embodiment
The revolving direction of the roller can be switched to either forward rotation or reverse rotation, whereby the flow direction of the fluid in the tube 17 can be switched.

Below the container 4 in FIG. 1, as a detecting means for detecting the pressure in the container 4, the degree of expansion (deformation) of the container 4
Is provided. The container stretch degree detecting means 6 in the present embodiment measures the position (height) of the lower end of the container 4 movable vertically in FIG. 1, and a string 61 having one end fixed to the lower end of the container 4.
A reel 62 for winding the other end of the string 61; an urging means (not shown) for applying a rotational torque to the reel 62 in a direction for winding the string (clockwise in FIG. 1);
And a rotation amount detection mechanism 63 such as a rotary encoder for detecting the rotation amount of the rotation amount.
By detecting the rotation amount of the reel 62, that is, the winding length of the string 61, the position (height) of the lower end of the container 4 can be measured.

Since the detected lower end position of the container 4, that is, the degree of expansion and contraction and the pressure in the container 4 have a correlation (for example, have a proportional relationship), the data of the detected lower end position of the container 4 is controlled. The pressure in the container 4 can be obtained by inputting it to the means 30 and performing arithmetic processing in the arithmetic unit.

In this case, calibration curve data indicating the relationship between the position of the lower end of the container 4 (degree of expansion and contraction) and the pressure in the container 4 is stored in advance in a memory built in the control means 30. Container 4 actually detected by the degree detecting means 6
Compare the position of the lower end of the
It is also possible to adopt a configuration in which the internal pressure is determined.

The container expansion / contraction detecting means 6 is not limited to the one described above, and may be, for example, a linear encoder for measuring the moving distance of the lower end of the container 4 or a laser for measuring the distance to the lower end of the container 4. A range finder can also be used.

In the present invention, the container stretch degree detecting means 6 is used.
Instead, pressure detecting means for directly measuring the pressure in the container 4 may be used. As this pressure detecting means, for example,
A pressure sensor such as a diffusion-type semiconductor pressure sensor is preferably used.

The information obtained by the container expansion / contraction degree detecting means 6 or the pressure detecting means is mainly used for drive control of the roller pump 5. For example, when the inside of the container 4 is depressurized and the container 4 is contracted, based on information obtained by the container expansion / contraction degree detecting means 6 or the pressure detecting means, the pressure in the container 4 does not exceed a preset lower limit value. Next, the drive / stop of the roller pump 5 is controlled.

A weight detecting means 44 for detecting the weight (total weight) of the container 4 is provided above the container 4 in FIG. 1, and the container 4 is suspended from a load receiving portion of the weight detecting means 44. I have. As the weight detecting means 44, one constituted by a weight sensor such as a load cell is preferably used.

Further, a weight detecting means 45 similar to the weight detecting means 44 for detecting the weight (total weight) of the storage container 3 is also provided on the mounting portion 57 of the storage container 3. The weight measurement of the container 4 and the storage container 3 by the weight detection means 44 and 45 may be performed continuously (real time) or intermittently, that is, at a constant cycle.

Further, the mounting portion 57 of the storage container 3 is provided with a heating means 46 for heating the dialysate stored in the storage container 3. As the heating means 46, a heating element, particularly a plate-shaped heating element (for example, a panel heater) is suitably used. In the illustrated example, a panel heater is installed on the mounting portion 57, and the storage container 3 is mounted thereon. The operation of the heating means 46 is controlled by the control means 30 described later.

The storage container 3 is provided with a temperature sensor 47 for detecting the temperature of the dialysate in the storage container 3. In the illustrated example, the temperature sensor 47 is installed so as to contact the outer surface of the storage container 3. As the temperature sensor 47, any type of device such as a thermistor, a thermocouple, a bimetal, PTC, and NTC may be used. Further, the temperature sensor 47 may be installed in the storage container 3.

When the dialysate in the storage container 3 is heated by the heating means 46, the temperature of the dialysate is adjusted to the vicinity of the set temperature by the control means 30 based on the temperature information detected by the temperature sensor 47. The temperature is controlled so as to be maintained at For example, when the temperature of the dialysate detected by the temperature sensor 47 reaches the upper limit of the set temperature range while the dialysate in the storage container 3 is heated by operating the heating unit 46, the heating unit 4 is heated.
6 is stopped, and after the lapse of a predetermined time or when the temperature of the dialysate reaches the lower limit of the set temperature range, control is performed so that the heating means 46 is operated. The set temperature range of the dialysate is about the body temperature, for example, about 35 to 40 ° C.

By performing such temperature control of the dialysate, an appropriate temperature dialysate can be injected into the peritoneum of the patient 100, so that discomfort due to a temperature difference from the body temperature and other adverse effects do not occur.

The control means 30 comprises, for example, a microcomputer (CPU), and includes a roller pump 5, a container expansion / contraction degree detecting means 6, flow path opening / closing means 36 to 42, weight detecting means 44 and 45, and a heating means 46. And temperature sensor 4
7 are electrically connected to each other.

The control means 30 is based on the information from the container expansion / contraction degree detecting means 6 and the weight detecting means 44 and 45 and the like.
Operation of roller pump 5 (drive / stop and rotation direction)
And the operation (switching operation) of each channel opening / closing means 36 to 42
And the flow of liquid in each flow path of the circuit is set as desired, and based on information from the temperature sensor 47, the operation of the heating means 46 is controlled, and the dialysate in the storage container 3 is controlled. Is maintained near the set temperature.

The operation unit 55 is used to select a mode and set various conditions when exchanging the dialysate. The control unit 30 performs sequence control for automatically performing each step described below according to the conditions set in the operation unit 55. Note that the operation unit 55 may be provided with a warning lamp, a buzzer, a display unit, and the like, which will be described later.

Next, an example of the operation of injecting the dialysate and collecting the drainage when performing peritoneal dialysis using the dialysate exchange device 1A will be described, focusing on the control procedure by the control means 30. It should be noted that the pattern of the steps to be executed, one injection amount of the dialysate (target injection amount), one drainage amount (target drainage amount), the flow rates of the dialysate and the drainage in each step, the heating means 46 Can be set in advance by operating switches, dials, keys, and the like provided on the operation unit 55.

[1] Transfer of dialysate to storage container Each of the channel opening / closing means 36 to 42 is previously set to a channel opening / closing pattern 0 (basic pattern) shown in Table 1 below. Is set to the channel opening / closing pattern 1 shown in FIG.

[0065]

[Table 1]

Thus, each dialysate bag 2a, 2b,
The dialysate in 2c and 2d is introduced into the storage container 3 through the third flow path 33 and the fourth flow path 34 by a head. Whether or not the total weight of the storage container 3 detected by the weight detecting means 45 has reached a predetermined weight (set weight) at which a single injection amount (target injection amount) of dialysate is introduced. Is determined, and when this is reached, each channel opening / closing means 36
To 42 are set again to the channel opening / closing pattern 0 shown in Table 1.

In the case of peritoneal dialysis while the patient is asleep, the target infusion volume of the dialysate is, for example, 1/10 to 1/10 of the total dialysate volume in the four dialysate bags 2a, 2b, 2c and 2d.
It is about 1/1.

[2] Heating of dialysate The heating means 46 is operated to heat the dialysate in the storage container 3 to an appropriate temperature. At this time, as described above, based on the temperature information detected by the temperature sensor 47, the on / off of the heating means 46 is controlled so that the temperature of the dialysate in the storage container 3 is maintained near the set temperature. Turn off or control the output (heat generation).

[3] Injection of dialysate into the patient Each of the channel opening / closing means 36 to 42 having the channel opening / closing pattern 0 shown in Table 1 in advance is replaced with the channel opening / closing pattern 2 shown in Table 1.
Then, the roller pump 5 is operated (forward rotation). Thereby, the heated dialysate in the storage container 3
It is injected into the peritoneum of the patient 100 through the fourth flow path 34, the third flow path 33, the first flow path 31, the fifth flow path 35, the second flow path 32, and the indwelling catheter sequentially.

When injecting the dialysate into the patient 100,
For example, the flow rate of the dialysate can be controlled as follows. The weight detection means 45 detects the total weight of the storage container 3 at every unit time, and obtains the dialysate outflow amount (= dialysate injection amount) from the storage container 3 per unit time from the decrease rate, and this outflow amount is calculated. The discharge amount of the roller pump 5 is adjusted so as to be equal to the preset outflow amount. The discharge amount of the roller pump 5 is adjusted by adjusting the rotation speed of the roller pump 5.

The total weight of the storage container 3 detected by the weight detecting means 45 is equal to the preset amount of dialysate remaining (for example,
It is determined whether or not the amount of dialysate remaining in the storage container 3 has reached a weight corresponding to 0), and when it reaches this, each of the flow path opening / closing means 36 to 42 is again switched to the flow path opening / closing pattern 0 shown in Table 1. And the roller pump 5 is stopped.

As a result of detecting the weight of the storage container 3, if the amount of dialysate flowing out of the storage container 3 suddenly decreases, or even if a predetermined time has elapsed, the dialysate in the storage container 3 is set to a predetermined dialysate. When the remaining amount of the liquid has not been reached, it is determined that an abnormal situation such as a blockage of the tube 22 or the transfer tube 29 has occurred, and the respective flow path opening / closing means 36 to 42 are determined.
Is set to the channel opening / closing pattern 0 shown in Table 1, and the roller pump 5 is stopped.

Further, in order to notify this abnormal situation,
Issues a warning. Examples of the warning method include turning on a warning lamp, emitting a buzzer or sound, and displaying on a display unit (for example, a liquid crystal display or a CRT).
These may be performed by the dialysate exchange device 1A itself or by communication with a nurse station in a hospital or the like.

[4] Execution of Dialysis The infusion of the dialysate into the peritoneum of the patient 100 is completed, and the respective channel opening / closing means 36 to 42 are set to the channel opening / closing pattern 0 shown in Table 1 for a predetermined time ( For example, 0 (in the case of peritoneal washing)-
(About 500 minutes). Thereby, peritoneal dialysis is performed.

[5] Shrinkage of Container After the dialysis is completed, each of the channel opening / closing means 36 to 42 having the channel opening / closing pattern 0 shown in Table 1 is set to the channel opening / closing pattern 3 shown in Table 1. Next, the roller pump 5 is operated (reverse rotation). Thereby, the air in the container 4 is exhausted and passes through the first flow path 31 to drain the drainage bags 7a, 7b, 7c.
Transported in The inside of the container 4 is gradually depressurized with the exhaust, and contracts against the restoring force of the container 4. This contraction degree is detected by the container expansion / contraction degree detection means 6.

When it is determined from the detection value detected by the container expansion / contraction degree detecting means 6 that the pressure in the container 4 has reached a preset pressure, the roller pump 5 is stopped, and each flow path opening / closing means is stopped. 36 to 42 are set again to the channel opening / closing pattern 0 shown in Table 1.

Incidentally, the set pressure is usually equivalent to a head difference of about 1.0 to 3.0 mH ₂ O from the atmospheric pressure (when it is confirmed that sufficient dialysate is present in the peritoneum in the initial withdrawal). Pressure (approximately 0.1-0.3 kgf / cm ² ) or 0.2-1.3 mH ₂ O (when peritoneal dialysis fluid is low). 0.1
About 3 kgf / cm ² ). Thus, in the following [6], drainage from the peritoneum can be performed smoothly and safely without causing retraction of the inner wall of the peritoneum due to excessive suction.

[6] Discharge of dialysate drainage into container When each of the channel opening / closing means 36 to 42 having the channel opening / closing pattern 0 shown in Table 1 is set to the channel opening / closing pattern 4 shown in Table 1, Due to the negative pressure in the container 4 and the restoring force of the container 4 trying to expand, the dialysed effluent in the peritoneum of the patient 100 is aspirated, passes through the indwelling catheter and the second flow path 32, and enters the container 4. Will be introduced.

When the drainage is introduced into the container 4, the total weight of the container 4 is detected by the weight detecting means 44 every unit time, and the amount of drainage flowing into the container 4 per unit time is determined from the increase rate. Then, it is checked that the inflow amount is about a preset inflow amount (or within a predetermined range).

The container 4 detected by the weight detecting means 44
It is determined whether the total weight has reached a predetermined set value. When the total weight has reached this value, or when a predetermined set time has been reached, each of the flow path opening / closing means 36 to 42 is again set to Table 1. Is set to the flow path opening / closing pattern 0 shown in FIG.

As a result of detecting the weight of the container 4, if the amount of drainage flowing into the container 4 suddenly decreases, or even if a predetermined time has elapsed, the amount of drainage in the container 4 is set to a predetermined target drainage amount. Is not reached, it is determined that an abnormal situation such as a blockage of the tube 22 or the transfer tube 29 has occurred, and the flow path opening / closing means 36 to 42 are set to the flow path opening / closing pattern 0 shown in Table 1. Further, in order to notify this abnormal situation, the above-mentioned warning is issued.

[7] Collection of Drainage into Drainage Bag Each of the channel opening / closing means 36 to 42 having the channel opening / closing pattern 0 shown in Table 1 in advance is replaced with the channel opening / closing pattern 3 shown in Table 1.
Then, the roller pump 5 is operated (reverse rotation). Thereby, the drainage in the container 4 is introduced into the drainage bags 7a, 7b, 7c through the first flow path 31 and collected.

When collecting the drainage into the drainage bags 7a, 7b, 7c, the flow rate of the drainage can be controlled, for example, as follows. The total weight of the container 4 is detected at every unit time by the weight detecting means 44, and the amount of drainage discharged from the container 4 per unit time is obtained from the decrease rate, and the amount of the drainage is equal to a preset set amount. The discharge amount of the roller pump 5 is adjusted so as to be as follows.

The container 4 detected by the weight detecting means 44
Is the total weight of the waste liquid (for example, container 4
It is determined whether the remaining amount of drainage in the container has reached a weight corresponding to 0), and when it reaches this, the roller pump 5 is stopped,
The flow path opening / closing means 36 to 42 are set again to the flow path opening / closing pattern 0 shown in Table 1. The above steps [6] and [7] are repeated until the drainage in the peritoneum of the patient 100 disappears.

The container 4 detected by the weight detecting means 44
The integrated drainage amount of one drainage obtained from the weight change of
If the increase in the weight of the container 4 is sharply reduced in a state in which the amount of drainage (a target amount of drainage) approaches a preset one time, the patient 1
At 00, it is determined that there is no drainage in the peritoneum. At that time, each of the channel opening / closing means 36 to 42 is set to the channel opening / closing pattern 0 shown in Table 1, and the introduction of the drainage into the container 4 is stopped. I do.

In peritoneal dialysis while the patient is asleep, the target drainage amount of the dialysate drainage is the amount obtained by adding the water removal amount to the target injection amount, for example, three drainage bags 7a, 7b, 7
It is about 1/10 to 1/1 times the total capacity of c.

The above-described steps [1] to [5] and steps [6] and [7] are repeated as one cycle, and this cycle is performed one or more cycles. The number of cycles is appropriately determined according to the case of the patient 100 undergoing peritoneal dialysis. In this case, even if the cycle number stored in advance in the memory built in the control means 30 is executed, the integrated total drainage amount (the drainage bag) determined from the weight change of the container 4 detected by the weight detection means 44 The above-described cycle may be repeated until the amount of drainage collected in 7a to 7c reaches a predetermined value.

Since the storage container 3 and the container 4 are provided independently of each other in the dialysate exchange device 1A,
When performing steps [1] to [7] for two or more cycles, steps [1] and [2] in the next cycle can be performed while performing step [6]. This allows
After collecting the drainage from the peritoneum of the patient 100, the time until the next infusion of the dialysate can be shortened.

After at least one cycle of the above steps [1] to [7], if necessary, the final dialysate stored in the dialysate bag 2e described below is injected or
Inject the final dialysate and collect the drain.

[8] Transfer of the final dialysate to the container The flow path opening / closing means 36 to 42 having the flow path opening / closing pattern 0 shown in Table 1 are set to the flow path opening / closing pattern 5 shown in Table 1. As a result, the final dialysate in the dialysate bag 2e is introduced into the storage container 3 through the third flow path 33 and the fourth flow path 34 due to a head.

When the final dialysate is introduced into the storage container 3, the flow rate of the dialysate is controlled in the same manner as in the above step [1]. The road opening / closing means 36 to 42 are again set to the channel opening / closing pattern 0 shown in Table 1.

[9] Heating of the final dialysate The final dialysate in the storage container 3 is heated to an appropriate temperature in the same manner as in the above step [2].

[10] Injection of the final dialysate into the patient In the same manner as in the above step [3], the heated final dialysate in the storage container 3 is injected into the peritoneum of the patient 100.

Steps [8] and [9] can be performed while performing step [6] of the last cycle, and can be performed while performing step [7] of the last cycle. , Step [9] can be performed. Thus, the time from the collection of the drainage from the peritoneum of the patient 100 to the injection of the final dialysate can be shortened.

[11] Implementation of Final Dialysis Dialysis with the final dialysate is performed in the same manner as in the above step [4].

[12] Shrinkage of Container The container 4 is shrunk in the same manner as in the above step [5].

[13] Draining of the final dialysate drainage into the container In the same manner as in the above step [6], the dialyzed drainage in the peritoneum of the patient 100 is introduced into the container 4.

[14] Collection of drainage into drainage container In the same manner as in the above step [7], the drainage in the container 4 is collected in the drainage bags 7a, 7b, 7c. In some cases, the above steps [13] and [14] are not performed, and the patient 1
The final dialysate may be left infused into the peritoneum at 00.

According to the dialysate exchange apparatus 1A as described above, the liquid transfer when collecting the drainage from the peritoneum of the patient 100 is performed by suction of the drainage obtained by the restoring force of the container 4. It is not necessary to secure a head for obtaining the liquid circulation, and the sleeping position (height) of the patient can be freely selected. In particular, when collecting the drainage, the pressure in the container 4 is reduced so that the head difference from, for example, the atmospheric pressure is substantially the same as the head difference between the conventional patient and the drainage bag. The drainage is slowly sucked and drained without generation.

Further, since it is not necessary to secure a drop from the bed position of the patient in both the dialysate bag and the drainage bag, the size of the device can be reduced, and an accident that the device is accidentally overturned while sleeping can be prevented. it can.

From the start to the end of peritoneal dialysis (for example, steps [1] to [7] or steps [1] to [14])
Can be automatically performed, so that it is not necessary to wake up the patient while sleeping and to switch the flow path.

FIG. 3 is a circuit diagram showing another example of the configuration of the dialysate exchange device of the present invention. Hereinafter, the configuration of the dialysis fluid exchange device 1B shown in the figure will be described with respect to differences from the dialysis fluid exchange device 1A, and the description of the same items will be omitted.

The dialysis fluid exchange device 1B is provided with each dialysis fluid bag 2
In this configuration, the dialysate is transferred from a to 2e to the storage container 3 by the roller pump 5. That is, a sixth flow path (bypass flow path) 48 having one end communicating with the fourth flow path 34 and the other end communicating with the fifth flow path 35 is formed. The channel opening / closing means 43 for opening and closing the sixth channel 48 is provided. The structure of the flow path opening / closing means 43 is the same as that of the flow path opening / closing means 36 to 42.

Each of the dialysate bags 2a to 2e is suspended and held by the same hanger as described above, but the positional relationship with the storage container 3 is arbitrary, and even if the height is almost the same. Good.

The operation of injecting the dialysate and collecting the drainage when performing peritoneal dialysis using the dialysate exchange device 1B is performed in the above-mentioned step [1], ie, the transfer of the dialysate to the storage container 3 and the above-mentioned steps. The steps [1] to [14] are the same as the steps [1] to [14], except that the transfer of the final dialysate to the storage container 3 in [8] is performed by the roller pump 5, respectively.

That is, in step [1], the roller pump 5 is operated (forward rotation) with the flow path opening / closing means 36 and 43 opened and the other flow path opening / closing means closed. As a result, the dialysate in the dialysate bags 2a to 2d is
3, the liquid is introduced into the storage container 3 through the first flow path 31, the sixth flow path 48, and the fourth flow path 34 sequentially.

In step [8], the flow path opening / closing means 37
The roller pump 5 is operated (forward rotation) in a state in which the flow path opening / closing means are closed and the other flow path opening / closing means are closed. This allows
The final dialysate in the dialysate bag 2e is introduced into the storage container 3 sequentially through the third flow path 33, the first flow path 31, the sixth flow path 48, and the fourth flow path 34.

In each of the steps other than the steps [1] and [8], the channel opening / closing means 43 is closed.

In the dialysis fluid exchange apparatus 1B having such a configuration, the same effect as that of the above-described dialysis fluid exchange apparatus 1A can be obtained, and the storage container 3 can be removed from the dialysis fluid bags 2a to 2e.
Since the dialysate is transferred to the roller pump 5 by the roller pump 5, the dialysate is transferred stably, and the transfer speed can be arbitrarily adjusted. Moreover, each dialysate bag 2a ~
Since there is no need to secure a drop between 2e and the storage container 3,
The device can be further miniaturized.

FIG. 4 is a circuit diagram showing another example of the configuration of the dialysate exchange device of the present invention. Hereinafter, the configuration of the dialysis fluid exchange device 1C shown in the figure will be described with respect to differences from the dialysis fluid exchange device 1A, and the description of the same items will be omitted.

The dialysis fluid exchange device 1C has a single vessel 4 which serves both as a storage vessel for temporarily storing the dialysis fluid and a vessel for aspirating the drainage fluid. In the dialysate exchange device 1C, one end communicates with the drainage bags 7a to 7c, the other end communicates with the container 4, and the other end communicates with the first flow passage 31.
And a second flow path 32 communicating with a catheter tube (not shown) indwelled in the peritoneum of the patient 100 at one end and a dialysate bag 2a to 2e at the other end. A third flow path 33 having the other end communicating with the first flow path 31
And one end communicates with the second flow path 32, and the other end communicates with the first flow path 31.
And a sixth flow path (bypass flow path) 48 communicating with the second flow path.

The roller pump 5 is provided between the connection of the first flow path 31 to the second flow path 32 and the connection to the third flow path 33 extended from the dialysate bag 2e. Roller pump in the third flow path 33 extended from the dialysate bags 2a to 2d, in the third flow path 33 extended from the dialysate bag 2e, in the second flow path 32, in the first flow path 31 Channel opening / closing means 36, 37, 38, 39, 40 and 43 are respectively provided between the container 5 and the drainage bags 7 a to 7 c and between the container 4 and the roller pump 5 in the first channel 31.

The constructions of the container 4, the container expansion / contraction degree detecting means 6 and the weight detecting means 44 are the same as those described above. Similar temperature sensors 47 are provided respectively.

Each of the dialysate bags 2a to 2e is suspended from and held by the same hanger as described above.
Is arbitrary, and may be about the same height.

The operation of injecting dialysate and collecting drainage when performing peritoneal dialysis using such a dialysate exchange device 1C is as follows.

[1-1] Shrinkage of Vessel Each of the channel opening / closing means 36 to 43 previously set to the channel opening / closing pattern 0 shown in Table 2 is replaced with the channel opening / closing pattern 1 shown in Table 2.
Then, the roller pump 5 is operated (forward rotation). Thereby, the air in the container 4 is exhausted and transferred into the drainage bags 7a, 7b, 7c. The inside of the container 4 is gradually depressurized with the exhaust, and contracts against the restoring force of the container 4. This contraction degree is detected by the container expansion / contraction degree detection means 6, and the roller pump 5 is stopped based on this detection value as described above, and the flow path opening / closing means 36 to 40
And 43 are again set to the channel opening / closing pattern 0 shown in Table 2.

[0117]

[Table 2]

[1-2] Transfer of dialysate to a container Each of the channel opening / closing means 36 to 40 and 43 is set to a channel opening / closing pattern 2 shown in Table 2 below. Thereby, the dialysate in each dialysate bag 2a, 2b, 2c, 2d is caused by the negative pressure in the container 4 and the restoring force of the container 4 trying to expand.
It is sucked into the container 4 and introduced.

At this time, the total weight of the container 4 is detected by the weight detecting means 44, and the same control as described above is performed based on the detected value. When the transfer of the dialysate to the container 4 is completed, the flow path opening / closing means 36 to 40 and 43 are set again to the flow path opening / closing pattern 0 shown in Table 2.

[2] Heating of dialysate The dialysate in the container 4 is heated to an appropriate temperature in the same manner as described above.

[3] Injection of dialysate into the patient Each of the channel opening / closing means 36 to 40 and 43 having the channel opening / closing pattern 0 shown in Table 2 is set to the channel opening / closing pattern 3 shown in Table 2. Then, the roller pump 5 is operated (forward rotation). Thereby, the heated dialysate in the container 4 is injected into the peritoneum of the patient 100 through the first flow path 31, the second flow path 32, and the indwelling catheter sequentially.

At this time, the total weight of the container 4 is detected by the weight detecting means 44, and the same control as described above is performed based on the detected value. When the dialysate is infused into patient 100,
The flow path opening / closing means 36 to 40 and 43 are again set to the flow path opening / closing pattern 0 shown in Table 2, and the roller pump 5 is stopped.

[4] Dialysis is performed. Dialysis is performed in the same manner as described above.

[5] Shrinkage of Container Each of the flow path opening / closing means 36 to 40 and 43 is set to the flow path opening / closing pattern 1 shown in Table 2, and then the roller pump 5 is operated (forward rotation). Thereby, the container 4 contracts in the same manner as described above. This contraction degree is detected by the container expansion / contraction degree detection means 6, and the roller pump 5 is stopped based on this detection value in the same manner as described above, and the flow path opening / closing means 36 to 40 and 43 are again shown in Table 2. Set to channel 0 opening / closing pattern.

[6] Discharge of dialysate drainage into container The flow path opening / closing means 36 to 40 and 43 are set to the flow path opening / closing pattern 4 shown in Table 2. Thereby, the dialysed drainage in the peritoneum of the patient 100 is aspirated in the same manner as described above, and is introduced into the container 4 through the second flow path 32, the sixth flow path 48, and the first flow path 31 sequentially. .

At this time, the total weight of the container 4 is detected by the weight detecting means 44, and the same control as described above is performed based on the detected value. When the transfer of the dialysate to the container 4 is completed, the flow path opening / closing means 36 to 40 and 43 are set again to the flow path opening / closing pattern 0 shown in Table 2.

[7] Collection of Drainage into Drainage Bag Each of the channel opening / closing means 36 to 40 and 43 is set to the channel opening / closing pattern 1 shown in Table 2, and then the roller pump 5 is operated (forward rotation). I do. As a result, the drainage in the container 4 is introduced and collected in the drainage bags 7a, 7b, 7c as described above.

At this time, the total weight of the container 4 is detected by the weight detecting means 44, and the same control as described above is performed based on the detected value. When the dialysate is infused into patient 100,
The flow path opening / closing means 36 to 40 and 43 are again set to the flow path opening / closing pattern 0 shown in Table 2, and the roller pump 5 is stopped. The above steps [6] and [7] are repeated until the drainage in the peritoneum of the patient 100 disappears.

As described above, when the drainage liquid collection is completed,
The flow path opening / closing means 36 to 40 and 43 are set to the flow path opening / closing pattern 0 shown in Table 2. The process [1-
1] to [5] and the repetition of steps [6] and [7] are defined as one cycle, and this is performed one cycle or two or more cycles as described above.

Next, if necessary, injection of the final dialysate or injection of the final dialysate and collection of drainage thereof are performed as described below.

[8-1] Shrinkage of Container The container 4 is shrunk in the same manner as in the step [1-1].
The contraction degree of the container 4 is detected by the container expansion / contraction degree detecting means 6. When the contraction degree reaches a predetermined value, the roller pump 5 is stopped, and the flow path opening / closing means 36 to 40 and 43 are again shown in Table 2. The channel opening / closing pattern 0 is set as shown.

[8-2] Transfer of the final dialysate to the container The flow path opening / closing means 36 to 40 and 43 are set to the flow path opening / closing pattern 5 shown in Table 2. As a result, the final dialysate in the dialysate bag 2e is sucked and introduced into the container 4 by the negative pressure in the container 4 and the restoring force of the container 4 trying to expand.

At this time, the flow rate of the dialysate is controlled in the same manner as in the step [1-2], and when the transfer of the final dialysate to the container 4 is completed, the respective channel opening / closing means 36 to 40 and 43 are switched off. The flow path opening / closing pattern 0 shown in Table 2 is set again.

[9] Heating the final dialysate The final dialysate in the container 4 is heated to an appropriate temperature in the same manner as in the above step [2].

[10] Injection of the final dialysate into the patient In the same manner as in the above step [3], the heated final dialysate in the container 4 is injected into the peritoneum of the patient 100.

[11] Implementation of Final Dialysis Dialysis with the final dialysate is performed in the same manner as in the above step [4].

[12] Shrinkage of Container The container 4 is shrunk in the same manner as in the above step [5].

[13] Draining of the final dialysate drainage into the container The dialysed drainage in the peritoneum of the patient 100 is introduced into the container 4 in the same manner as in the above step [6].

[14] Collection of drainage into drainage container In the same manner as in the above step [7], the drainage in the container 4 is collected in the drainage bags 7a, 7b, 7c. In some cases, the above steps [13] and [14] are not performed, and the patient 1
The final dialysate may be left infused into the peritoneum at 00.

In the dialysis fluid exchange device 1C having such a configuration, the same effect as that of the above-described dialysis fluid exchange device 1A can be obtained, and the dialysis fluid bags 2a
Since the dialysate within 2e is sucked and transferred, the transfer of the dialysate can be performed stably, and the transfer speed can be arbitrarily adjusted. Further, it is not necessary to secure a head between each of the dialysate bags 2a to 2e and the storage container 3, and one container 4
Therefore, the size of the apparatus can be further reduced.

FIG. 5 is a circuit diagram showing another example of the configuration of the dialysate exchange device of the present invention. The dialysate exchange device 1D is
The configuration is the same as that of the dialysate exchange device 1C except that the sixth channel 48 and the channel opening / closing means 43 are not provided.

The operation of injecting the dialysate and collecting the drainage when performing peritoneal dialysis using the dialysate exchange device 1D is performed in the transfer of the drainage to the container 4 in steps [6] and [13]. It is the same as the above-described steps [1] to [14] in the dialysate exchange device 1C except that the drainage flow path is different.

That is, in steps [6] and [13], the head 50 of the roller pump 5 is opened with the flow path opening / closing means 38 and 40 opened and the other flow path opening / closing means closed.
Are separated from each other (the state shown by the dashed line in FIG. 1). Thereby, the dialysed drainage in the peritoneum of the patient 100 is aspirated and introduced into the container 4 through the second flow path 32 and the first flow path 31 sequentially.

The dialysis fluid exchange apparatus 1D having such a configuration is
The circuit configuration is further simplified as compared with the dialysate exchange device 1C.

As described above, the dialysis fluid exchange device of the present invention has been described with respect to the configuration examples shown in the respective drawings, but the present invention is not limited to these. For example, in the dialysate exchange device 1A, the storage container 3 is not provided, and the third flow path 32, the first flow path 31, the fifth flow path 35, It is also possible to adopt a configuration in which the dialysate is directly injected into the peritoneum of the patient 100 through the second flow path 32 sequentially.

In each of the above embodiments, the roller pump 5 is used as a depressurizing means for depressurizing the inside of the container 4 in order to shrink the container 4, but the present invention is not limited to this.
It may be an exhaust means for exhausting the air inside using a vacuum pump or the like. Further, in the present invention, the container shrinking means for shrinking the container 4 is not limited to the depressurizing means, and may be configured to apply an external force to the container 4 to shrink the container, such as pressing one end of the container 4, and then remove the external force. May be used.
In this case, when the external force is removed and the container 4 is restored,
Is set so that the internal pressure is in the range as described above.

As means for detecting the amount of liquid in the storage container 3 or the container 4, instead of the weight detecting means 44, 45, the liquid flowing into the storage container 3 or the container 4 or the storage container 3 is used.
Alternatively, means for detecting the flow rate (flow rate) of the liquid flowing out of the container 4 or the integrated flow rate may be used. Examples of such means include a flow sensor that optically, electrically, or magnetically detects a flow rate, and a flow meter having an impeller.

The heating means and the temperature sensor for heating the dialysate are located at positions other than those shown in the figure, for example,
It may be provided in the middle of the dialysate bags 2a to 2e or the tube.

In the present invention, a means for detecting the amount of liquid in the storage container 3 or the container 4, such as a weight detecting means, a heating means, and a temperature sensor may be omitted as necessary. The configuration of the container 4 is not limited to a bellows-shaped one that expands and contracts in the vertical direction as shown in the figure. It may have a film.

The form of the dialysate container and the drainage collection container is not limited to the dialysate bag and the drainage bag described above, but may be a container having another shape such as a bottle.

[0151]

As described above, according to the dialysis fluid exchange device of the present invention, the fluid transfer when collecting drainage from the patient's peritoneum is performed by suction using the restoring force of the telescopic container. In addition, it is not necessary to secure a head for obtaining the liquid circulation of the drainage, and the lying position (height) of the patient and the installation position of the device can be freely selected.

In particular, when collecting the drainage, by adjusting the pressure in the elastic container as desired, it is possible to prevent the inner wall of the peritoneum from being pulled in, and the safety is extremely high. Further, the configuration of the device is simple, and the size of the device can be reduced. In particular, it is possible to prevent an accident that the device is accidentally overturned due to the high height of the device as in the related art.

In addition, since the process from the start to the end of peritoneal dialysis can be automatically performed, there is no need to wake up the patient during bedtime and switch the flow path, and the burden on the patient is reduced. In particular, when a heating means or a liquid amount detecting means is provided, peritoneal dialysis under more appropriate conditions can be easily performed.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing a configuration example of a dialysate exchange device of the present invention.

FIG. 2 is a circuit configuration diagram of the dialysate exchange device shown in FIG.

FIG. 3 is a circuit configuration diagram showing another configuration example of the dialysate exchange device of the present invention.

FIG. 4 is a circuit configuration diagram showing another configuration example of the dialysate exchange device of the present invention.

FIG. 5 is a circuit configuration diagram showing another configuration example of the dialysate exchange device of the present invention.

[Explanation of symbols]

 1A, 1B, 1C, 1D Dialysate exchange device 2a, 2b, 2c, 2d, 2e Dialysate bag 3 Storage container 4 Container 5 Roller pump 50 Head 6 Container expansion / contraction detection means 61 String 62 Reel 63 Rotation amount detection mechanism 7a, 7b, 7c Drainage bag 8 Bag tube 9-13 Tube 14 Bag tube 15-22 Tube 23-28 Connection member 29 Transfer tube 30 Control means 31 First flow path 32 Second flow path 33 Third flow path 34 Fourth flow Road 35 Fifth flow path 36-43 Flow path opening / closing means 44, 45 Weight detection means 46 Heating means 47 Temperature sensor 48 Sixth flow path 51-54 Connector 55 Operation part 56 Hanger 57 Placement part 100 Patient

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61M 1/14-1/28

Claims (11)

(57) [Claims] At least one dialysate container filled with a dialysate, a container which is extendable and retractable and can suck liquid therein by a restoring force from a contracted state, and a container contracting means for contracting the container. At least one drainage collection container for collecting dialysate, a first flow path having one end communicating with the drainage collection container and the other end communicating with the container, and one end communicating with the container. A second flow path having the other end communicating with the catheter placed in the patient, one end communicating with the dialysate container, and the other end having the first flow path.
A flow path or a third flow path communicating with the second flow path, flow path opening / closing means capable of opening and closing the first flow path, the second flow path, and the middle of the third flow path, respectively, Control means for controlling the opening and closing of each flow path by the opening and closing means and the operation of the container shrinking means. 2. The dialysate exchange device according to claim 1, wherein the container shrinking means is a pressure reducing means for reducing the pressure inside the container. 3. The dialysate exchange device according to claim 1, wherein the container shrinking means is a roller pump installed in the middle of a flexible tube forming the first flow path. 4. The dialysate exchange device according to claim 3, wherein the roller pump is detachably mounted on the tube. 5. The dialysate exchange device according to claim 1, wherein the container has a bellows shape. 6. The first flow path, the second flow path, and the third flow path are formed in a lumen of a flexible tube, and the flow path opening / closing means opens and closes the lumen of the tube. The dialysate exchange device according to any one of claims 1 to 5, wherein the device can be closed. 7. The dialysate exchange device according to claim 1, further comprising a storage container for temporarily storing dialysate in the dialysate container. 8. The dialysate exchange device according to claim 1, further comprising a heating means for heating the dialysate. 9. The dialysate exchange device according to claim 1, further comprising a detecting unit for detecting a liquid amount in the container. 10. The dialysate exchange device according to claim 9, wherein the detecting means is a weight detecting means for detecting a weight of the container. 11. The dialysate exchange device according to claim 1, further comprising a container expansion / contraction degree detecting means for detecting the expansion / contraction degree of the container.