Supporting plates for the membranes of a dialyzer, particularly for hemodialysis

Claim 1

A supporting plate for the membranes of a dialyzer, particularly for hemodialysis, said plate being provided within the active part of the plate, and on both sides thereof with projections adapted to support a membrane and in conjunction with such membrane to form flow paths for the dialysis liquid from one end of the plate to the other, the blood flowing on the opposite side of the membrane in the same direction as the dialysis liquid or in the opposite direction, characterized in that the projections are divided into first and second groups of projections, the projections of said first group being substantially perpendicularly arranged with respect to the projections of said second group, said groups of projection are constructed and arranged in a pattern subdividing each of the paths through which the dialysis liquid flows from one end of the dialyzer to the other into a multitude of short longitudinally extending path sections, said path section being arranged for enabling the dialysis liquid to flow along both lateral sides of each of the projections, each of said path sections being obstructed at each end thereof by a projection and communicating with a laterally offset longitudinal path section through a transverse path section.