JPS6259591B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides efficient,
Moreover, it relates to a method for hygienically cleaning.

(Prior art) Artificial kidneys, plasma separation devices, artificial livers, and other blood processing devices are connected to a body fluid introduction circuit and a body fluid output circuit, and body fluids such as blood taken from a patient are circulated through these circulatory system paths. It is widely known to perform purification treatment and the like.

In such a body fluid treatment system, it is necessary to wash the system with physiological saline or the like in order to remove dirt and air bubbles accumulated in the system before use.

A conventional example of this cleaning method will be explained with reference to FIG.

FIG. 5 shows an example of an artificial kidney system composed of a dialyzer and a blood circuit connected to it, where 1 is a dialyzer filled with physiological saline, and 2 is a blood inlet 4 of dialyzer 1. an arterial blood circuit connected to the blood outlet 5;
This is the venous blood circuit connected to the venous blood circuit.

When cleaning such a body fluid circulation system, a physiological saline filling tube is connected to the luer connector 6 for shunt connection attached to the tip of each arterial blood circuit 2, and physiological saline is injected through the tube. Usually, the liquid is introduced into the blood circuit 2, passed through the dialyzer 1 and the venous blood circuit 3, and then discharged from the Luer connector 7 of the circuit 3.

(Problems to be Solved by the Invention) However, according to the conventional method as described above, the filled physiological saline solution is discharged after passing through the system only once. This method not only requires liquid and is wasteful, but also has drawbacks such as the fact that small dust and air bubbles stuck in the system cannot be completely removed, and the operation is troublesome.

(Means for Solving the Problems) The present invention was proposed in order to solve the above problems, and in particular, it fills the body fluid treatment device and the body fluid circulation circuit with cleaning liquid, and also The cleaning liquid is circulated in a state where the cleaning liquid is connected to the circulation circuit so as to form a sealed circuit.

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows an example in which the present invention is applied to an artificial kidney device, where 10 is a dialyzer filled with physiological saline, and 12 is an artery connected to the blood inlet 14 of the dialyzer 10. The side blood circuit 13 is a venous blood circuit connected to the blood outlet 15, which is the same as the conventional one.

In this embodiment, chips 18 and 19 as shown in FIG. 2 are removably attached to shunt connection portions 16 and 17 of each of the blood circuits 12 and 13. The tips 18 and 19 have tapered ends.

In the present invention, first, each of the blood circuits 12,
13 to the dialyzer 10, a predetermined amount is injected from the shunt connection part 17 of one blood circuit 12 into the physiological saline system path while rotating the liquid feeding pump 20. In this case, in this embodiment, since the tip 19 is attached to the shunt connection part 17, the thin part 23 of the infusion port 22 of the bag 21 containing physiological saline is inserted into the tip, as shown in FIG. Physiological saline can be easily introduced by simply breaking through the tube with the point 19.

Note that the outer diameter of the tip 19 is the same as that of the infusion bag 21.
Since it is formed to have the same inner diameter as the infusion port 22,
Once the tip 19 is inserted into the infusion port 22, it will not easily fall out.

After this, only the shunt connection part 17 is pulled out, leaving the chip 19 in the thin wall part 23,
As shown in FIG. 4, the chip 18 of the other shunt connection part 16 is fitted into this shunt connection part 17.

Since the tip of the shunt connecting portion 17 is covered by the tip 19 during introduction of physiological saline, a sterile state is maintained.

Thereby, the circulatory system paths of the arterial blood circuit 12, dialyzer 10, and venous blood circuit 13 become sealed paths.

After forming such a sealed system path, in the present invention, the liquid feeding pump 20 is driven to circulate the inside of the sealed system path to clean fine dust etc. adhering to the system, and also to clean the monitor line 25. While adjusting the liquid level in the drip chamber 24, air bubbles faintly present in the system are removed.

After cleaning is completed in this way, the shunt connection part 17
from the tip 18 of the shunt connection 16,
This is to discharge the treated liquid in the system.

The embodiment described above is an example of the present invention, and to connect the shunt connections 16 and 17, for example, a normal connection tube may be used. Furthermore, when filling the system path with physiological saline, it may be injected from a branch line or the like.

It goes without saying that the present invention is applicable not only to artificial kidney devices but also to plasma separation devices, artificial liver devices, and other body fluid processing devices.

(Effects) According to the present invention as described above, the inside of the body fluid treatment system is sealed and the physiological saline is circulated to clean the inside of the system, so the physiological saline can be repeatedly circulated. Compared to the conventional cleaning method that is used only once and is disposable, it is possible to efficiently remove fine dust, impurities, etc. in the system, and the efficiency of removing air bubbles in the system is also significantly improved. improves.

In addition, there is no need for a filling tube for physiological saline as in the past, and the operation is simple and there is no waste of physiological saline.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of an artificial kidney system for explaining an embodiment of the present invention, Fig. 2 is a schematic diagram of a shunt connection part of a blood circuit in the present invention, and Fig. 3 is a schematic diagram of a saline solution in the present invention. A schematic diagram for explaining the introduction operation, FIG. 4 is a schematic diagram showing a state in which the shunt connection part of the blood circuit is connected in the present invention, and FIG. 5 is a schematic diagram of a general artificial kidney system. In the figure, 10 is a dialer, 12 is an arterial blood circuit, 13 is a venous blood circuit, 16 and 17 are shunt connections, and 18 and 19 are chips.

Claims (1)

[Scope of Claims] 1. A method for cleaning the inside of a body fluid treatment system comprising a body fluid treatment device and a body fluid circulation circuit, comprising:
A body fluid treatment system characterized in that the body fluid treatment device and the body fluid circulation circuit are filled with cleaning fluid, and the cleaning fluid is circulated in a state where the body fluid treatment device and the body fluid circulation circuit are connected to form a sealed system path. cleaning method. 2. The shunt connection part of the body fluid introduction side circuit in the body fluid circulation circuit and the shunt connection part of the body fluid output side circuit are connected to form a sealed system path, and the cleaning liquid in this sealed system path is circulated. Said first
The invention described in Section 1. 3. The invention according to item 1 or 2 above, wherein the cleaning liquid is circulated by a body fluid circulation pump.