Patent ID: 11957826
Assignee: FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 14:
15. A treatment apparatus comprising:
a fluid conveyance system comprising:
a dialyzer;
a solution supply line connected to the dialyzer and a solution source;
an outlet line connected to the dialyzer;
an arterial conduit portion connected to the dialyzer, the arterial conduit portion comprising a conduit interior and an arterial patient tube clamp; and
a venous conduit portion connected to the dialyzer, the venous conduit portion comprising a conduit interior and a venous patient tube clamp;
an arterial needle; and
a venous needle;

a blood pump arranged along the fluid conveyance system and adapted to convey blood within the fluid conveyance system;
a second pump arranged along the fluid conveyance system and adapted to pump a liquid, via a liquid feed conduit, into the fluid conveyance system at an addition site along the fluid conveyance system; and
at least one controller configured to concurrently remove blood, using the liquid pumped by the second pump into the fluid conveyance system while a patient is connected to the treatment apparatus, from both the arterial conduit portion and from the venous conduit portion of the fluid conveyance system and towards the arterial needle and the venous needle, respectively,
wherein, during the removal of blood both from the arterial conduit portion and from the venous conduit portion, both the arterial patient tube clamp and the venous patient tube clamp are in an opened state.