Citrate anticoagulation system for extracorporeal blood treatments
View Patent ↗A hemofiltration system and method for pumping blood from a patient's blood stream into an access line, introducing an anticoagulant solution into the pumped blood, filtering the pumped blood and delivering it to a return line, introducing a substitution fluid into the pumped blood, introducing a calcium and magnesium solution into the blood traveling through the return line, and returning the blood back to the patient's blood stream.
1. A hemofiltration method comprising:
pumping blood from a patient's blood stream into an access line;
introducing an anticoagulant solution into the blood;
filtering the blood;
delivering the blood, after filtering, to a return line;
introducing a substitution fluid into the blood;
introducing a calcium and magnesium solution into the blood traveling through the return line; and
returning the blood back to the patient's blood stream.
2. The hemofiltration method of claim 1 , wherein the substitution fluid is introduced into the access line.
3. The hemofiltration method of claim 1 , wherein the substitution fluid is introduced into the return line.
4. The hemofiltration method of claim 1 , wherein the substitution fluid is introduced into the access line and into the return line.
5. The hemofiltration method of claim 1 , further comprising monitoring the blood pressure in the access line.
6. The hemofiltration method of claim 1 , further comprising monitoring the blood pressure in the return line.
7. The hemofiltration method of claim 1 , further comprising:
exporting through a filtrate line a filtrate obtained from the filtering step; and
monitoring the pressure in the filtrate line to control the filtrate pressurization.
8. The hemofiltration method of claim 1 , further comprising:
exporting through a filtrate line a filtrate collected from the filtering step; and
detecting blood leakage into the filtrate line to control leakage of blood cells through the filter.
9. The hemofiltration method of claim 1 , further comprising:
exporting through a filtrate line a filtrate collected from the filtering step;
storing the filtrate traveling through the filtrate line in a reservoir;
weighing the filtrate stored in the reservoir; and
computing the amount of substation fluid introduced in the blood from the weighing step.
10. The hemofiltration method of claim 1 , further comprising:
detecting air bubbles from the blood introduced with the substation fluid; and
removing air bubbles from the blood before it is returned into the patient's blood stream.
11. The hemofiltration method of claim 1 , further comprising heating the substation fluid introduced into the blood to a temperature substantially equal to the patient's body temperature.