Blood treatment unit for an extra-corporeal blood treatment apparatus

摘要

The housing of the blood treatment unit according to the invention holds both a blood pump and a semi-permeable membrane. The blood pump is an impeller pump. The impeller of the impeller pump is surrounded by a partition which divides the housing into two chambers. The semi-permeable membrane forms at least a part of the partition. It is therefore possible for an exchange of matter to take place between the blood which flows through the first chamber of the housing and the dialysis fluid which flows through the second chamber of the housing. The blood treatment unit is intended for an extra-corporeal blood treatment apparatus and has a particularly compact construction.

主权项

1. A blood treatment unit for an extra-corporeal blood treatment apparatus, comprising:
a housing having a first chamber and a second chamber; an impeller pump comprising an impeller rotatably mounted in the housing, said impeller pump being surrounded by a partition dividing the housing into the first chamber and the second chamber; and a semi-permeable membrane forming at least a part of the partition, wherein the semi-permeable membrane enables an exchange of matter to take place between a first fluid in the first chamber and a second fluid in the second chamber, wherein the first fluid is blood and the second fluid is a dialysis fluid, wherein the second chamber of the housing is an annular space which completely surrounds an outer wall of the semi-permeable membrane.