This invention is classified in Class 210, Subclasses 22, 321.
The manufacture of blood perfusion units suitable for fabrication into the hemodialysis unit assembly of this invention is disclosed in the Ser. No. 098,322, filed as of this application filing date by this inventor, J. L. Jones, Sr. The modified Newhart blood perfusion unit having a long and relatively narrow width blood perfusion unit configuration, disclosed in the application Ser. No. 098,322, may require disposition in a means providing for the multiple pleated folding of one or more blood perfusion units into a series of folds which provide a perfusion unit free of kinks and twists, providing free unobstructed flow of the patient blood.
Esmond, in U.S. Pat. No. 3,490,523, issued Jan. 20, 1970, disclosed a transfer device having a pair of dialysate flow sheets which open toward the face of a simple blood perfusion envelope. Each one of the pair of flow sheets is secured to an envelope exterior face.
Rogers, in U.S. Pat. No. 3,660,280, issued May 2, 1972, discloses a blood perfusion single flat tube having a flat flexible lattice of fibers of nylon, polypropylene and the like affixed to the exterior of the two faces of the flat tube. The fibers are disposed in a regular rhomboidal pattern on the exterior two faces of the flat blood perfusion tube, which can be wound on a hollow spool or roll.
Both Esmond and Rogers teach advances in controlling the flow of dialysate solution, providing more effective dialysis treatment.
The subject invention has dialysate solution fluid flow means providing a high velocity dialysate solution scrubbing the boundary layer, which controls the rate of diffusion of waste excreta products through the permeable membrane of the blood perfusion unit.