Patent ID: 6776912
Filing Date: 2004-08-17
Classification: A61M,B01D

Abstract:
A hemodiafiltration system for treating blood, comprising a membrane module having a cylinder-shaped housing with a longitudinal extent, in which housing hollow-fiber membranes having semipermeable walls and being capable of supporting fluid flow through their lumina are arranged in a direction of the longitudinal extent of the housing, one end of the hollow-fiber membranes being embedded in a fluid-tight manner in a first sealing compound joined to an inner wall of the housing in a fluid-tight manner and a second end of the hollow-fiber membranes being embedded in a fluid-tight manner in a second sealing compound joined to the inner wall of the housing in a fluid-tight manner, and comprising a dialyzate space into which a dialyzate inlet arrangement and a dialyzate outlet arrangement open, a substituate space into which a substituate inlet arrangement opens, and a means for delivering a dialyzate having a defined volume stream into the dialyzate space via the dialyzate inlet arrangement, a means for withdrawing the dialyzate from the dialyzate space via the dialyzate outlet arrangement, and a means for delivering a substituate with a defined volume stream into the substituate space via the substituate inlet arrangement, wherein the membrane module is implemented as an integrated unit for blood treatment, filtration of the substituate, and mixing of the substituate with the blood, and the substituate space and dialyzate space are separated from each other in a manner via a continuous dividing wall, wherein the hollow-fiber membranes are combined into a single bundle and are used for blood treatment, filtration of the substituate, and delivery of the substituate to the blood, such that an exterior space delimited by the inner wall of the housing and the first and second sealing compounds are formed around the hollow-fiber membranes, wherein the exterior space along the longitudinal extent of the housing is separated by the dividing wall into the substituate space and the dialyzate space, and the dividing wall encloses each individual hollow-fiber membrane.