Systems and methods for priming hemodialysis using multiple fluid sources
First Claim
1. A hemodialysis system configured to purge air from a blood circuit, the hemodialysis system comprising:
- a dialyzer;
a dialysis fluid circuit in fluid communication with the dialyzer via dialysis fluid inlet and outlet lines, the dialysis fluid circuit includinga fresh dialysis fluid pump,a used dialysis fluid pump,a first balancing unit including (i) a first fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a first used dialysis fluid chamber operable with the used dialysis fluid pump, anda second balancing unit including (i) a second fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a second used dialysis fluid chamber operable with the used dialysis fluid pump;
the blood circuit in fluid communication with the dialyzer and includingan arterial line for removing blood from a patient and delivering the blood to the dialyzer,a venous line for returning blood from the dialyzer to the patient,a blood pump operable with the arterial line upstream of the dialyzer,a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump, anda drip chamber located along the venous line; and
an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged from the blood circuit using dialysis fluid or other physiologically acceptable fluid pumped through the dialysis fluid circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly to the blood circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
A hemodialysis system configured to purge air from a blood circuit comprising: a dialyzer; a dialysis fluid circuit operable with the dialyzer via dialysis fluid inlet and outlet lines; the blood circuit operable with the dialyzer and including an arterial line, a venous line, a blood pump operable with the arterial line upstream of the dialyzer, and a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged using dialysis fluid or other physiologically acceptable fluid pumped by at least one of the fresh or used dialysis fluid pumps from the dialysis fluid circuit, through the dialyzer, into the blood circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly into the blood circuit.
-
Citations
20 Claims
-
1. A hemodialysis system configured to purge air from a blood circuit, the hemodialysis system comprising:
-
a dialyzer; a dialysis fluid circuit in fluid communication with the dialyzer via dialysis fluid inlet and outlet lines, the dialysis fluid circuit including a fresh dialysis fluid pump, a used dialysis fluid pump, a first balancing unit including (i) a first fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a first used dialysis fluid chamber operable with the used dialysis fluid pump, and a second balancing unit including (i) a second fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a second used dialysis fluid chamber operable with the used dialysis fluid pump; the blood circuit in fluid communication with the dialyzer and including an arterial line for removing blood from a patient and delivering the blood to the dialyzer, a venous line for returning blood from the dialyzer to the patient, a blood pump operable with the arterial line upstream of the dialyzer, a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump, and a drip chamber located along the venous line; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged from the blood circuit using dialysis fluid or other physiologically acceptable fluid pumped through the dialysis fluid circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly to the blood circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A hemodialysis system configured to purge air from a blood circuit, the hemodialysis system comprising:
-
a dialyzer; a dialysis fluid circuit in fluid communication with the dialyzer via dialysis fluid inlet and outlet lines, the dialysis fluid circuit including a fresh dialysis fluid pump, a used dialysis fluid pump, a first balancing unit including (i) a first fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a first used dialysis fluid chamber operable with the used dialysis fluid pump, and a second balancing unit including (i) a second fresh dialysis fluid chamber operable with the fresh dialysis fluid pump and (ii) a second used dialysis fluid chamber operable with the used dialysis fluid pump; the blood circuit in fluid communication with the dialyzer and including an arterial line for removing blood from a patient and delivering the blood to the dialyzer, a venous line for returning blood from the dialyzer to the patient, a blood pump operable with the arterial line upstream of the dialyzer, a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump, and a drip chamber located along the venous line; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged using dialysis fluid or other physiologically acceptable fluid pumped from the dialysis fluid circuit, through the dialyzer, into the blood circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly into the blood circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A hemodialysis system configured to purge air from a blood circuit, the hemodialysis system comprising:
-
a dialyzer; a dialysis fluid circuit in fluid communication with the dialyzer via dialysis fluid inlet and outlet lines, the dialysis fluid circuit including a fresh dialysis fluid pump, and a used dialysis fluid pump; the blood circuit in fluid communication with the dialyzer and including an arterial line for removing blood from a patient and delivering the blood to the dialyzer, a venous line for returning blood from the dialyzer to the patient, a blood pump operable with the arterial line upstream of the dialyzer, and a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, air is purged using dialysis fluid or other physiologically acceptable fluid pumped by at least one of the fresh dialysis fluid pump or the used dialysis fluid pump from the dialysis fluid circuit, through the dialyzer, into the blood circuit, in combination with dialysis fluid or other physiologically acceptable fluid from the source introduced directly into the blood circuit. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification