JP2001037873A - Method of sterilizing dialyser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of sterilizing dialyser or blood circuit after use easily and efficiently. SOLUTION: When a dialyser is sterilized, after returned blood is collected, the ends on the artery side and the vein side of the blood circuit, from which a needle cannula has been pulled out, are connected with each other. First, a blood pump 3 is driven, while an antiseptic solution is poured on the dialysate side for sterilizing the dialysate side. At the time, the antiseptic solution on the dialysing fluid passage side is moved to the blood passage side because of the difference in the transmembrane pressure of the dialysate passage and the blood passage, so that the blood circuit side is sterilized. And after a set period of time has passed, dewatering on the blood circuit side is done, then the sterilization operation is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for disinfecting a dialysis device. More specifically, the present invention relates to a pre-disposal treatment of a dialyzer, a blood circuit, circuits and containers connected to the blood circuit used in the hemodialysis treatment.

[0002]

2. Description of the Related Art In hemodialysis treatment, blood and dialysate are refluxed by countercurrent in a blood chamber and a dialysate chamber of a dialyzer partitioned by a dialysis membrane, respectively, and unnecessary substances in the blood are passed through the dialysis membrane. In the dialysate. After completion of dialysis treatment, the dialyzer, blood circuit, and tubes and containers connected to the blood circuit are treated as waste. Such problems may be related to hygiene management, and the problems will increase depending on the season and storage location.

[0003] In recent years, home hemodialysis treatment has become widespread, but garbage discharged from homes is currently treated as general waste, so no treatment for infection has been taken.
High risk of infection during waste disposal operations. In the case of home hemodialysis treatment, waste or the inside of a waste bag is often disinfected or sterilized before being discarded, and although safety is achieved, patients and caregivers are troublesome. Work will be forced.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a method for simply and efficiently disinfecting a dialyzer and a blood circuit after use.

[0005]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, transferred the disinfectant used for disinfection on the dialysate flow path side to the blood flow path side via a dialysis membrane. Thus, the present invention has been completed. That is, according to the present invention, after the dialysis treatment is completed, a disinfectant is introduced into the dialysate flow path to disinfect the dialysate flow path, and the disinfectant in the dialysate flow path is transferred to the blood flow path via the dialysis membrane. And disinfecting the blood flow path. Here, as a method for transferring the used dialysate on the dialysate flow path side to the blood flow path side,
A method based on a difference in transmembrane pressure or a method such as pressure feeding by a water removal pump can be adopted.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. The dialysis apparatus shown in FIG. 1 is provided with a closed type water removal control apparatus 1, 2 is a dialyzer, 3 is a blood pump, 4 is a venous chamber, 5 is a vein side clamp,
Numerals 6 and 7 are an arterial tip and a venous tip of the blood circuit, respectively. The water removal control device 1 performs a specified amount of water removal from the closed system and the chamber 11 including the fresh dialysate chamber 111, the used dialysate chamber 112, and the capacity change chamber 113 for changing the capacity of the closed system. The pump includes a water removal pump 12 for changing the capacity of the capacity change chamber 113, a hydraulic pump 13, and a liquid pressure sensor 14. The capacity change chamber 113 is filled with, for example, silicone oil.

[0009] As shown in FIG. 1, the disinfection of the dialysis apparatus is performed by connecting the ends of the arterial side and the venous side of the blood circuit from which the needle has been drawn after the completion of blood collection. First, while the blood pump 3 is driven, a disinfectant is supplied to the dialysate side to disinfect the dialysate side. At this time, the disinfectant on the dialysate flow path shifts to the blood flow path due to the difference in transmembrane pressure between the dialysate flow path and the blood flow path, and the blood circuit side is disinfected. Then, after the lapse of the set time, if the water is removed from the blood circuit side, the disinfection operation is completed. FIG.
Then, the disinfecting solution on the dialysate flow path side may be transferred to the blood flow path side by the water removal pump 13.

FIG. 2 shows an example of a method of disinfecting the blood circuit side with a disinfectant pumped and then flowing the disinfectant into the priming cup 8. The tip of the artery side and the tip of the vein side of the blood circuit after needle removal are fixed to the priming cup 8, and the disinfectant is flowed to the dialysate side to disinfect the dialysate side. When the water removal pump 12 is driven to allow the silicone oil to flow into the volume fluctuation chamber 113, since the water removal control device is a closed system, the disinfectant flowing through the dialysate flow path side has the silicone oil flowing into the volume fluctuation chamber 113. Is press-fitted into the blood flow channel side via the dialysis membrane (not shown) of the dialyzer 2 to perform disinfection on the blood flow channel side. For disinfection on the blood flow path side, the blood pump 3 is first stopped, the vein side clamp 5 is opened, the disinfectant is supplied to the vein side to disinfect the vein side circuit, and the disinfectant is discharged from the vein side tip 6 to the priming cup 8 I do. Next, the vein-side clamp 5 is closed, the blood pump 3 is driven, the disinfectant is flown to the artery side to disinfect the circuit on the artery side, and the disinfectant is discharged from the arterial tip 7 to the priming cup 8. Complete. The disinfecting solution after the disinfection of the dialysate flow path is pumped to the blood flow path side using a pump (not shown) different from the water removal pump 3, and the blood flow path is returned to the dialysate flow path side after disinfection. Etc. can also be adopted.

[0009]

As is apparent from the above description, by employing the method of the present invention, the dialyser and blood circuit discarded after the completion of the dialysis treatment are disinfected. Infection, corrosion and odor can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an example of a dialysis device to which the present invention can be applied.

FIG. 2 is a schematic configuration diagram showing another example of a dialysis device to which the present invention can be applied (a water removal control device is omitted).

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 water removal control device 11 chamber 111 fresh dialysate chamber 112 used dialysate chamber 113 volume change chamber 12 water removal pump 13 hydraulic pump 14 fluid pressure sensor 3 blood pump 4 venous chamber 5 venous clamp 6 venous tip 7 artery Side tip 8 Priming cup

Claims (3)

[Claims] After the dialysis treatment is completed, a disinfectant is introduced into the dialysate flow path to disinfect the dialysate flow path, and the disinfectant in the dialysate flow path is transferred to the blood flow path via a dialysis membrane. And disinfecting the blood flow path. 2. The disinfection method according to claim 1, wherein the disinfecting solution is transferred by a difference in transmembrane pressure. 3. The disinfection liquid is transferred by pressure feeding.
Disinfection method described in 1.