PRIMING AND AIR REMOVAL SYSTEMS AND METHODS FOR DIALYSIS
First Claim
1. A renal treatment fluid priming method comprising:
- priming an extracorporeal circuit connected to a patient with a physiologically compatible fluid, the extracorporeal circuit including an arterial line, a venous line and blood compartment of a blood filter; and
pumping from a renal treatment fluid line in communication with the blood filter (i) pulling blood from the patient through the arterial line to flush the physiologically compatible fluid through the arterial line and the blood filter compartment into the renal treatment fluid line and (ii) pulling blood from the patient through the venous line to flush the physiologically compatible fluid through the venous line and the blood filter compartment into the renal treatment fluid line,such that a greater volume of blood is pulled from the patient via (i) and (ii) than a volume of the extracorporeal circuit.
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Accused Products
Abstract
A renal treatment fluid priming method includes priming an extracorporeal circuit connected to a patient with a physiologically compatible fluid, the extracorporeal circuit including an arterial line, a venous line and blood compartment of a blood filter; and pumping from a renal treatment fluid line in communication with the blood filter (i) pulling blood from the patient through the arterial line to flush the physiologically compatible fluid through the arterial line and the blood filter compartment into the renal treatment fluid line and (ii) pulling blood from the patient through the venous line to flush the physiologically compatible fluid through the venous line and the blood filter compartment into the renal treatment fluid line, such that a greater volume of blood is pulled from the patient via (i) and (ii) than a volume of the extracorporeal circuit.
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Citations
38 Claims
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1. A renal treatment fluid priming method comprising:
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priming an extracorporeal circuit connected to a patient with a physiologically compatible fluid, the extracorporeal circuit including an arterial line, a venous line and blood compartment of a blood filter; and pumping from a renal treatment fluid line in communication with the blood filter (i) pulling blood from the patient through the arterial line to flush the physiologically compatible fluid through the arterial line and the blood filter compartment into the renal treatment fluid line and (ii) pulling blood from the patient through the venous line to flush the physiologically compatible fluid through the venous line and the blood filter compartment into the renal treatment fluid line, such that a greater volume of blood is pulled from the patient via (i) and (ii) than a volume of the extracorporeal circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14)
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11. (canceled)
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15. A dialysis system comprising:
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a dialysis instrument including a blood pump, a renal treatment fluid pump and a filter holder connected to the dialysis instrument; and a device configured to move the filter holder when the filter holder is holding a filter operable with at least one of the pumps, the filter holder moved during a priming of the filter in an attempt to dislodge gas bubbles held within the filter. - View Dependent Claims (16, 17, 18)
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19. A renal treatment fluid priming method comprising:
moving a blood filter mechanically during priming of the filter so as to dislodge gas bubbles held within dialyzer. - View Dependent Claims (20)
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21. A dialysis system comprising:
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a dialysis instrument including first an second renal treatment fluid pumps; and a vessel including a fluid inlet and a fluid outlet, the fluid inlet including a nozzle configured to cause renal treatment fluid pumped by the pump to form a spray within the vessel, so as to enhance removal of gas from the renal treatment fluid, the first pump configured to pressurize the renal treatment fluid prior to the nozzle, the second pump configured to pull the renal treatment fluid from the vessel. - View Dependent Claims (22, 24)
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25. A renal treatment fluid air separation method comprising:
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causing the renal treatment fluid to form a mist; creating a negative pressure on the mist, pulling gas from the mist; pooling the mist; pumping the pooled renal treatment fluid to a patient. - View Dependent Claims (26, 27)
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28. A renal treatment fluid priming method comprising:
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priming an extracorporeal circuit connected to a patient with a physiologically compatible fluid, the extracorporeal circuit including an arterial line, a venous line and blood compartment of a blood filter; and pumping from the extracorporeal circuit to (i) pull blood from the patient through the arterial line to flush the physiologically compatible fluid through the arterial line and the blood filter compartment into the renal treatment fluid line and (ii) pull blood from the patient through the venous line to flush the physiologically compatible fluid through the venous line and the blood filter compartment into the renal treatment fluid line, such that a greater volume of blood is pulled from the patient via (i) and (ii) than a volume of the extracorporeal circuit. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A renal treatment fluid priming system comprising:
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an extracorporeal circuit for connecting to a patient, the extracorporeal circuit including an arterial line, a venous line and blood compartment of a blood filter; apparatus configured to prime the extracorporeal circuit with a physiologically compatible fluid; and a processor modified to cause at least one fluid pump to (i) pull blood from the patient through the arterial line to flush the physiologically compatible fluid though the arterial line and the blood filter compartment into the renal treatment fluid line and (ii) pull blood from the patient through the venous line to flush the physiologically compatible fluid through the venous line and the blood filter compartment into the renal treatment fluid line, such that a greater volume of blood is pulled from the patient via (i) and (ii) than a volume of the extracorporeal circuit.
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Specification