Since you have to make yourself. Then it needs a minimalist design to be amazing.
Required materials: 120L white steel drum (preferably 316 medical white steel) Yuan
2~3 meters high white steel bracket (preferably height adjustable, can bear 100KG, used to hold dialysate bucket) The inner diameter of the blood tube is 8.6mm, it can be put in, and the pump speed can be adjusted) 1,500 yuan
Silicone tube 1.2 meters (inner diameter 6mm, used as dialysate tube, add a flow restrictor to each tube) X2 20 Yuan
Homemade dialysate flow limiter (the little thing on the infusion set that is artificially enlarged to adjust the flow rate) X2 40 Yuan
Electric blanket (to heat yourself or for dialysis Liquid barrel heating) 60 yuan
The total equipment cost is about 2,400 yuan
For other small parts, please make your own decisions. What kind of hemostatic forceps, small bench, hanger made of No. 8 wire, etc. . . . .
Upgrades: 1. Just buy second-hand dialysis machines. Toray and Nipro are the best. They have simple structures and cheap parts. Good maintenance.
2. Blood pump upgrade:
1. Buy a perfusion machine (the advantage is that it has venous pressure and air monitoring, and can give heparin) for about 20,000 yuan.
2. Taojinbao small single pump (Shen Laohu, who is a steel watcher, uses this one. The disadvantage is that there is no monitoring). A few thousand.
3. Taori machine-installed small yellow pump (with monitoring, good pump quality, small quantity in China) maybe 10,000.
Three. Heating system upgrade:
1. Add a small sun, warm air, etc.
2. Buy a high-power air conditioner.
3. Find someone to make a constant temperature heater with temperature protection. The ultimate temperature is never heated to 40°C. Simply throw it into the dialysate bucket and heat it.
Four. Add a monitor or an electronic blood pressure monitor with automatic continuous measurement.
Treatment process: (This treatment adopts sequential dialysis, with only dehydration in the first 2 hours and detoxification in the next 2 hours. This dialysis device does not have any control and monitoring. It is recommended to use low molecular weight heparin and high-flux dialysis. During the dialysis process, pay close attention to your own status, and during detoxification, pay close attention to the reading of the electronic scale and promptly correct the occurrence of overshoot by adjusting the flow limiter)
Weigh your body weight before treatment and calculate the total amount of dehydration. to select measuring tools. Treatment must be completed with outside help.
Blood pressure and other necessary parameters must be measured multiple times during treatment. Check the dosage of low molecular weight heparin by yourself or ask your doctor. Treatment can be carried out after ensuring safety or deciding to die.
The first step is to prepare dialysate. Mix AB concentrate (not dry powder, but a concentrated solution prepared with dry powder) and reverse osmosis water at a ratio of 1:1.25:32.75 to prepare 100 liters of final dialysate. Put it into a large bucket and raise the height to 2.3m (height is adjustable best). Put down the electronic scale.
The second step is to use a blood pump to guide blood to the dialyzer. The dialyzer has two dialysate ports. Clamp the upper inlet and put the lower outlet pipe into the measuring cup. Adjust the blood pump speed. Read the measuring cup value until the dehydration volume is complete. Blood pump speed is directly proportional to ultrafiltration rate. This is pure ultrafiltration, which only dehydrates but does not detoxify. After reaching the dehydration target, move to the third step.
The third step is to connect the final dialysate configured in the first step to the inlet of the dialyzer, open the outlet and enter the waste liquid barrel, and place a precision electronic scale (one with at least two piezoelectric sensors) under the barrel. ). Adjust the blood pump speed and calculate the weight loss rate of the electronic scale of the dialysate barrel and the weight gain rate of the waste liquid barrel. Adjust the flow limiter of the dialysate inlet and outlet in time to prevent overflow. (There are experience issues, which cannot be described.)
End the treatment after all the dialysate has flowed out. Weigh yourself again and keep a record.
(Disclaimer: The methods mentioned in this article have not been verified in practice and are purely theoretical. The author is not responsible for any personal injuries and legal consequences caused by using this method.)
Three recommendations This book: "Blood Purification Chemistry", "Blood Purification Practical Technical Manual" and "Oxford Dialysis Handbook" are all must-buy and must-read.