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US 2003/0155312 A1Published application
Spin-hemodialysis assembly and method
AssigneeDenco, Inc.
InventorsIvars V. Ivansons, Dudley W.C. Spencer
Life of this patent
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AssigneeDenco, Inc.
InventorsIvars V. Ivansons, Dudley W.C. Spencer
Estimating the term…
Blood is purified by removing the whole blood from a patient and feeding the blood into a manifold in a centrifuge. A purifying chamber is formed in the centrifuge from a plurality of co-arcuately arranged modules. The blood is supplied from the manifold to each of the modules. Each module contains a stack of dialysate membranes. Fresh dialysate is fed into the manifold and then to each of the modules. Under centrifugal force the cells are separated from the plasma. The plasma is purified by removing contaminants as a result of the action of the dialysate and membranes. The purified blood is returned to the patient by being fed back to the manifold and then to the patient. The used dialysate/contaminants are fed from the modules back to the manifold and out of the centrifuge.
An assembly for purifying a fluid comprising a rotatable centrifuge, a purifying chamber in said centrifuge, filter structure in said purifying chamber for removing contaminants from the fluid, a fluid supply line communicating with said purifying chamber for supplying the fluid to be purified, a fluid discharge line communicating with said purifying chamber for removing purified fluid from said purifying chamber, and a contaminant discharge line communicating with said purifying chamber for discharging the contaminants removed from the fluid.
A dialyzer for purifying blood comprising a module having a stack of alternately arranged dialysate plates and membranes, said stack of plates and membranes including a plurality of plates arranged in spaced parallel relationship with one of said membranes between each pair of plates to form a chamber on each side of said one membrane one of said chambers being a blood flow chamber and the other of said chambers being a dialysate flow chamber, one of said pair of plates having a blood side disposed toward said blood flow chamber, said blood side having a longitudinal central portion with blood channels extending laterally across said central portion, a longitudinal edge portion on each side of said central portion, said edge portions having blood channels disposed longitudinally generally perpendicular to said lateral blood channels, a blood inlet communicating with one of said edge portions, a blood outlet communicating with the other of said edge portions, said other of said pair of plates being disposed toward said dialysate flow chamber and having a dialysate flow side, said dialysate flow side having a central portion with longitudinal dialysate flow channels, a cover located between said pair of plates at said longitudinal edge portions at each longitudinal side of said membrane, and said stack of plates and membranes and covers being sealed in said module.
A method of purifying a fluid comprising supplying the fluid to be purified into a purifying chamber in a centrifuge, disposing filter structure in the centrifuge, rotating the centrifuge to separate lighter components of the fluid from heavier components of the fluid, filtering contaminants from the heaver components of the fluid by passing the heavier components of the fluid through the filter structure, discharging the purified fluid from the centrifuge, and discharging the contaminants from the centrifuge.
Dependencies are inferred from the claim text.