JPH05245194A - Washing method and joint of circuit for exchanging bodily fluid - Google Patents

Abstract

PURPOSE:To facilitate the operation to wash the entire part of a circuit for exchanging bodily fluid and the operation to exchange and connect the respective constituting parts for treatment by mounting a joint having a two-way selector valve body to the pipe end of a pipeline connecting the respective constituting parts for treatment to each other and connecting a pair of joints corresponding to the inflow and outflow ports of the respective constituting parts for treatment to each other by a bypass passage. CONSTITUTION:Through holes 11 and 12 respectively intersecting orthogonally with the vertical direction and lateral direction of a joint body 10 are provided. The top and bottom end faces of the through hole 11 are a connecting port 13 for connecting the pipeline 5 and a connecting port 14 for connecting the constituting parts 3 for treatment. The one end face of the through hole 12 is a connecting port 16 of the bypass passage 15 for connecting a pair of the opposite joints 9 to each other. The other end face side is a mounting port for the two-way selector valve body 17. Further, a communicating path 18 which can connect the connecting port 13 side of the pipeline 5 and the connecting port 16 side of the bypass passage 15 to a communicating state is provided in the joint body, 10. As a result, the entire part of the circuit for exchanging the bodily fluid is washed at one time by changing over the selector valve body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for dialysis treatment, plasma exchange therapy, etc., for body fluid exchange formed by connecting treatment constituent parts such as a membrane type plasma separator, a selective plasma component adsorber and a membrane filter. The present invention relates to a circuit cleaning method and a joint for forming a circuit.

[0002]

2. Description of the Related Art Normally, as shown in FIG. 6, in a body fluid exchange circuit 1 for dialysis treatment or plasma exchange therapy, a membrane plasma separator 2, a selective plasma component adsorber 3 and a membrane filter 4 are used. Treatment components such as the above are connected by a conduit 5 to form a body fluid exchange circuit 1. Then, after the whole body fluid exchange circuit 1 is washed, treatments such as dialysis treatment and plasma exchange treatment are performed according to the respective purposes. Thus, in such circuit connecting work and circuit cleaning work, it is important to prevent bubbles from entering.

Conventionally, there are the following two methods as work methods for connecting and forming the body fluid exchange circuit 1 while preventing such air bubbles from being mixed. One is the body fluid exchange circuit 1
This is a method of sequentially connecting each of the conduits 5 forming the above and each treatment component while advancing and evacuating each component. The other is, as shown in FIGS. 7 to 10, in the body fluid exchanging circuit 1, for the portion where each treatment component is arranged, connect the ends of the conduit 5 forming the circuit to the dummy tube. This is a method in which the entire circuit is connected to each other by 6 and air is evacuated and washed at once in the circuit, and then the dummy tube 6 is replaced with each treatment component while paying attention to air bubbles. .

FIG. 7 to FIG. 10 show a procedure for replacing the conventional selective plasma component adsorber 3 and the dummy tube 6 with each other. First, as shown in FIG. 7, the tube ends of the tube path 5 located before and after the dummy tube 6 are clamped by the forceps 7. Then, as shown in FIG. 8, the pipe line 5 is inserted and connected to the outlet side port 3b in a state where the adsorption device 3 is turned upside down. In this case, when the outlet port 3b is not filled with filling water such as an aqueous sodium citrate solution,
Refill the physiological saline with the syringe 8, and be careful not to mix air bubbles in the connection work. After that, Fig. 9
As shown in (3), the adsorption device 3 is turned upside down to return to the original normal posture, and the pipe line 5 is inserted and connected to the inlet port 3a. In this case as well, connection may be made after supplementing the physiological saline solution as necessary. Finally, FIG.
As shown in, if the forceps 7 are removed and the clamp is released,
The replacement connection work between the dummy tube 6 and the suction device 3 is completed.

[0005]

Therefore, in the method of connecting and forming the bodily fluid exchange circuit while performing air bleeding and cleaning for each part, the pipe line 5 and each treatment component are connected. Since there are many connection points, there is a drawback in that the work of connecting each of the pipelines one by one while taking care not to mix air bubbles into the circuit becomes extremely complicated and patience. Therefore, the burden on the operator exceeds the limit, and it causes the connection mistake.

In the method of using the dummy tube 6 shown in FIGS. 7 to 10, the entire circuit can be washed at once, but the dummy tube 6 is connected to the pipe line 5 at a predetermined position. Dummy tube 6 after work and cleaning
And the replacement connection work with each treatment component, there is a drawback that complicated preparatory work is still required.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made by improving and removing the conventional problem in view of the above-mentioned problems, and by simply switching the valve body of the joint connected to the pipe end of the pipe line, the body fluid is removed. It is an object of the present invention to provide a cleaning method for cleaning the entire exchange circuit and a joint with which each treatment component can be exchange-connected very easily.

In the method adopted by the present invention to solve the above-mentioned problems, a circuit structure is formed by connecting therapeutic components such as a membrane-type plasma separator, a selective plasma component adsorber and a membrane filter. In the body fluid exchange circuit, a joint provided with a two-way switching valve body is connected to the pipe ends of the pipe lines connecting the treatment components, the joints are connected by a bypass passage, and the joints facing each other are connected. Each treatment component such as the membrane plasma separator or the selective plasma component adsorber is connected in between, and after that, a two-way switching valve body is switched to form a cleaning circuit so that the bypass passage is in communication, In this state, the first cleaning of the entire circuit is performed, and subsequently, the two-way switching valve element is switched to another position to perform the second cleaning and the plumbing. Is

The joint adopted by the present invention is a joint for connecting treatment components such as a membrane-type plasma separator, a selective plasma component adsorber, and a membrane filter,
A connection port for connecting the treatment components to each other, a connection port for inserting an inlet or an outlet of each treatment component, and a pair of joints corresponding to the inlet and the outlet of one treatment component. A joint main body is formed with a connection port of a bypass passage connecting each other, and a two-way switching valve body capable of switching each of the three connection ports is slidably disposed in the joint main body. This is a joint for a body fluid exchange circuit.

[0010]

According to the present invention, a joint provided with a two-way switching valve body is attached to the pipe ends of the conduits connecting the treatment components, and the inlet and the outlet of each treatment component are attached. The pair of joints corresponding to is connected by a bypass passage. Therefore, by switching the switching valve element,
Each of the conduits communicates with each other through the bypass passage of the joint, and the entire body fluid exchange circuit can be washed at once. Further, by simply connecting the respective treatment constituent parts to the connection ports of the pair of joints, it is possible to form the desired body fluid exchange circuit, which is extremely convenient.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method and structure of the present invention will be described below with reference to the embodiments shown in the drawings. The same reference numerals as in the conventional case are the same members. 1 to 5
[Fig. 4] is a partially enlarged vertical sectional view showing each stage of the cleaning method and the replacement connection procedure of the therapeutic component of the present invention. As shown in the figure, in this embodiment, each conduit 5 for connecting each treatment component to form the body fluid exchange circuit 1 is formed.
A joint 9 is connected to the pipe end of the.

The joint 9 has through holes 11 and 12 which are orthogonal to the vertical direction and the horizontal direction of the joint body 10. The upper and lower end surfaces of the through hole 11 serve as a connection port 13 for connecting the conduit 5 and a connection port 14 for connecting the therapeutic component (selective plasma component adsorption device in this embodiment) 3. Further, one end face side of the through hole 12 is a connection port 16 of a bypass passage 15 that connects the pair of facing joints 9 to each other, and the other end face side is a mounting port of the two-way switching valve body 17. Further, inside the joint body 10, there is provided a communication passage 18 that can connect the connection port 13 side of the conduit 5 and the connection port 16 side of the bypass passage 15 in a communication state. The switching valve body 17 has a port 19 penetrating up and down, and connects the connection port 13 on the side of the pipe line 5 and the connection port 14 on the side of the adsorber 3 to each other as necessary, and also connects the connection port 13 on the side of the adsorber 3 to each other. The connection port 13 on the fifth side and the connection port 16 on the bypass passage 15 side can be connected and connected. In addition, in the state before connection, caps 20 are attached to the inlet 3a and the outlet 3b of the adsorption 3 so that the filling water such as the sodium citrate aqueous solution inside does not spill.

Next, a method for cleaning the body fluid exchange circuit 1 in which the joint 9 thus constructed is connected to the pipe end of each pipe line 5, a procedure for exchanging and connecting each treatment component, and a treatment method will be described. First, as shown in FIG. 1, when the port 19 of the switching valve body 17 of the joint 9 is in communication with the through hole 11 and the conduit 5, the cap 2 on the inlet 3a side of the adsorber 3 is provided.
0 is removed and the inflow port 3a is inserted into the connection port 14 of the joint body 10. Then, in this state, the switching valve body 17 is moved to the left side in the figure to block the through hole 11 as shown in FIG. Next, as shown in FIG. 3, the adsorber 3 and a pair of joints 9 facing the adsorber 3,
Reverse the vertical direction of 9. Then, the cap 20 on the outflow port 3b side of the adsorber 3 is removed, and the outflow port 3b is inserted into the connection port 14 of the joint body 10 for connection. continue,
The switching valve body 1 of the joint 9 corresponding to the outlet 3b side of the adsorber 3
7 is operated to switch the through hole 11 to a state in which the through hole 11 is interrupted midway. After that, as shown in FIG. 4, the adsorption device 3 and the joints 9, 9 are turned upside down to return to the normal posture. After that, the same work is performed at the connection point of each treatment component. As a result, the exchange connection of each treatment component and the circuit formation of the body fluid exchange circuit 1 are completed.

In this way, the replacement connection of each treatment component is completed, and the switching valve element 17 of the pair of joints 9, 9 connected to the inlet and outlet sides of each treatment component is at the position shown in FIG. In this case, in the body fluid exchange circuit 1, the entire conduit 5 and the bypass passage 15 are communicated with each other through the connection port 13 and the communication passage 18 of the joint body 10 and the connection port 16.
Therefore, the whole body fluid exchange circuit 1 can be washed at once, and preparation for the washing can be performed simply by switching the switching valve body 17, which is extremely easy and convenient. The cleaning in this case is for the purpose of cleaning the entire pipeline 5, and is called first cleaning.

Next, after the completion of the first cleaning, the switching valve bodies 17 of the joints 9, 9 are pushed from the state shown in FIG. 4 to the right side in the figure to switch to the state shown in FIG. As a result, the respective pipe lines 5 are brought into communication with each other through the through hole 11 of the joint body 10 and the port 19 of the switching valve body 17, and the second cleaning that starts through each treatment component is started. Then, after completion of the second cleaning, priming is started in the same state. This priming is an operation of replacing the washing liquid remaining in the body fluid exchange circuit 1 with a priming liquid obtained by adding heparin to Ringer's liquid or the like at a predetermined ratio. After the priming is completed, a predetermined dialysis treatment or plasma exchange therapy is performed.

As described above, in the present embodiment, the cleaning work of the body fluid exchange circuit 1, the replacement connection work of each treatment component, and the intended treatment action can be performed very easily and easily. By the way, the present invention is not limited to the above-mentioned embodiment, and for example, each of the connection ports 13 and 1 of the joint body 10 is
Arrangement positions of 4, 16 and the form of the communication passage 18 can be appropriately changed. The circuit structure of the body fluid exchange circuit 1 and the types of treatment components may be determined according to the intended treatment action.

[0017]

As described above, according to the present invention,
In a body fluid exchange circuit used for dialysis treatment, plasma exchange treatment, etc., a two-way switching valve body is provided at the pipe end of the pipe line connecting each treatment component such as a membrane plasma separator or a selective plasma component adsorption device. And a pair of joints corresponding to the inlet and the outlet of each treatment component are connected by a bypass passage. Therefore, by switching the switching valve element, the respective conduits of the whole body fluid exchange circuit can be communicated with each other via the bypass passage of the joint, and the whole body fluid exchange circuit can be washed at once. . That is, the cleaning work can be performed only by switching the switching valve body, and is extremely simple and easy.
Further, the replacement and connection work of each treatment component does not need to be performed while replacing the dummy tube or the like, and it is sufficient to just connect it to the joint as it is, which is also extremely easy.
Furthermore, it is possible to continuously perform cleaning work, priming, and treatment by simply switching the switching valve body.
It is convenient.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a joint according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a connection procedure between a joint according to the present invention and an inlet side of an adsorber.

FIG. 3 is a vertical cross-sectional view showing a connection procedure between a joint according to the present invention and an outlet side of an adsorber.

FIG. 4 is a vertical cross-sectional view showing a state of the joint and the adsorber according to the present invention during the first cleaning.

FIG. 5 is a vertical cross-sectional view showing a state during second cleaning and priming of the adsorption device of the joint according to the present invention.

FIG. 6 is a front view showing a general body fluid exchange circuit.

FIG. 7 is a front view showing a connection procedure between a conventional conduit and a dummy tube.

FIG. 8 is a front view showing a connection procedure between a conventional conduit and an outlet side of an adsorber.

FIG. 9 is a front view showing a connection procedure between a conventional pipeline and an inlet side of an adsorber.

FIG. 10 is a front view showing a connection completed state of a conventional pipeline and adsorption.

[Explanation of symbols]

 1 ... Body fluid exchange circuit 2 ... Membrane-type plasma separator 3 ... Selective plasma component adsorber 4 ... Membrane filter 5 ... Pipeline 9 ... Joint 10 ... Joint body 13 ... Pipeline connection port 14 ... Treatment component Connection port 15 ... Bypass passage 16 ... Bypass passage connection port 17 ... Switching valve body 18 ... Communication passage 19 ... Switching valve body port

Claims (2)

[Claims] 1. A body fluid exchanging circuit configured by connecting treatment constituent parts such as a membrane type plasma separator, a selective plasma component adsorber and a membrane filter, to a conduit for connecting the respective treatment constituent parts. A joint provided with a two-way switching valve body is connected to the pipe end, the joints are connected by a bypass passage, and the membrane-type plasma separator, the selective plasma component adsorber, etc. are connected between the opposing joints. A cleaning circuit is formed so that each of the treatment components is connected, and then the two-way switching valve element is switched so that the bypass passage is in communication. In this state, a first cleaning of the entire circuit is performed, and then the two-way operation is performed. A method for cleaning a bodily fluid exchange circuit, characterized in that the switching valve element is switched to another position to perform a second cleaning and plumming. 2. A joint for connecting treatment components such as a membrane-type plasma separator, a selective plasma component adsorber, and a membrane filter, and a connection port of a conduit for connecting each treatment component. , A joint body for connecting the inlet or outlet of each treatment component, and a bypass passage connecting a pair of joints corresponding to the inlet and outlet of one treatment component A joint for a body fluid exchange circuit, characterized in that a two-way switching valve body, which is formed, is slidably disposed in the joint body to switch the three connection ports.