Air purging systems for blood treatments
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,a drip chamber located along the venous line, anda container for accepting air purged from the blood circuit; and
an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, the blood pump drives air from the drip chamber into the container.
1 Assignment
0 Petitions
Accused Products
Abstract
A hemodialysis system configured to purge air from a blood circuit comprises a dialyzer; a dialysis fluid circuit operable 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 operable with the dialyzer and including an arterial line, a venous line, 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, a drip chamber located along the venous line, and a container for accepting air purged from the blood circuit; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, the blood pump pumps a fluid through the dialyzer and into the drip chamber, forcing air from the drip chamber into the container.
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Citations
21 Claims
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1. A hemodialysis system configured to purge air from a blood circuit, the hemodialysis system comprising:
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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, a drip chamber located along the venous line, and a container for accepting air purged from the blood circuit; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, the blood pump drives air from the drip chamber into the container. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A hemodialysis system configured to purge air from a blood circuit, the hemodialysis system comprising:
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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, a drip chamber located along the venous line, and a container for accepting air purged from the blood circuit; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, the blood pump pumps a fluid through the dialyzer and into the drip chamber, forcing air into the container. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A hemodialysis system configured to purge air from a blood circuit, the hemodialysis system comprising:
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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, a physiologically acceptable fluid source in fluid communication with the arterial line upstream of the blood pump, a drip chamber located along the venous line, and a container for accepting air purged from the blood circuit; and an air purging scheme wherein, with the dialysis fluid inlet and outlet lines connected to the dialyzer, the blood pump pumps a fluid through the dialyzer and into the drip chamber, forcing air from the drip chamber into the container. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification