Metabolic detoxification and method
View Patent ↗An extracorporeal filtration and detoxification system and method generally comprise separating ultrafiltrate from cellular components of blood, treating the ultrafiltrate independently of the cellular components in a recirculation circuit, recombining treated ultrafiltrate and the cellular components, and returning whole blood to the patient. A recirculation circuit generally comprises an active cartridge including active cells operative to effectuate a selected treatment; in some embodiments, the active cells are the C3A cell line.
1. An extracorporeal filtration method, the method comprising the steps of:
(a) drawing blood from a patient;
(b) separating ultrafiltrate fluid from cellular components of said blood;
(c) optionally, infusing said separated ultrafiltrate fluid with glucose;
(d) infusing oxygen into the separated ultrafiltrate fluid;
(e) treating said separated ultrafiltrate fluid independently of said cellular components in a recirculation circuit, wherein said treating comprises circulating said separated ultrafiltrate fluid through an active cartridge comprising active cells operative to effectuate a selected treatment of said separated ultrafiltrate fluid, wherein said active cells are the C3A cell line;
(f) recombining said treated ultrafiltrate fluid and said cellular components; and
(g) returning whole blood comprising said recombined, treated ultrafiltrate fluid and said cellular components to the patient,
with the proviso that said separated ultrafiltrate fluid is analyzed either prior or subsequent to said treating step (e) but before said recombining step (f), wherein the analysis comprises monitoring of oxygen and pH differentials across the active cartridge.
2. The method of claim 1 , wherein said drawing comprises utilizing a first lumen of a double lumen catheter and wherein said returning comprises utilizing a second lumen of said double lumen catheter.
3. The method of claim 1 , wherein said drawing comprises utilizing a blood pump operative to circulate said blood from the patient, through an ultrafiltrate generator, and back to the patient at a selected flow rate.
4. The method of claim 1 , wherein said separating comprises utilizing an ultrafiltrate generator comprising a hollow fiber filter cartridge.
5. The method of claim 4 , wherein said utilizing comprises drawing said ultrafiltrate through a semi-permeable membrane of said hollow fiber filter cartridge.
6. The method of claim 5 , wherein said semi-permeable membrane has a pore size of approximately 0.2μm.
7. The method of claim 5 , wherein said semi-permeable membrane has a pore size of approximately 0.1μm.
8. The method of claim 5 , wherein said semi-permeable membrane has a nominal molecular weight cut-off of about 100,000 Daltons.
9. The method of claim 5 , wherein said drawing comprises implementing a ultrafiltrate pump.
10. The method of claim 1 , further comprising the step of infusing said drawn blood of step (a) with an anticoagulation agent.
11. The method of claim 1 , wherein said treating further comprises maintaining said ultrafiltrate at a predetermined temperature.
12. The method of claim 11 , wherein said treating further comprises maintaining said ultrafiltrate at approximately 37° C.
13. The method of claim 1 , further comprising filtering said ultrafiltrate prior to said recombining.
14. The method of claim 13 , wherein said filtering comprises utilizing a hollow fiber filter.
15. The method of claim 13 , wherein said filtering comprises utilizing one or more of a detoxification device, an ammonia trap, and a mechanical filter.
16. The method of claim 1 , wherein said returning comprises detecting and removing gaseous contaminants in said whole blood.
17. The method of claim 1 , wherein said returning comprises regulating a flow rate of said whole blood to the patient.