Liquid purification or separation – Flow – fluid pressure or material level – responsive – Plural elements controlled
Reexamination Certificate
2011-07-19
2011-07-19
Kim, John (Department: 1777)
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Plural elements controlled
C210S085000, C210S096200, C210S141000, C210S143000, C210S194000, C210S195200, C210S252000, C604S006090, C604S006110, C604S065000, C604S066000, C604S067000
Reexamination Certificate
active
07981280
ABSTRACT:
An extracorporeal blood treatment apparatus includes a blood treatment unit, a treatment fluid circuit, and a blood circuit. The treatment fluid circuit has a treatment fluid pump for circulating treatment fluid around the treatment fluid circuit and through the blood treatment unit. The blood circuit has a dual chamber blood pump for circulating blood around the blood circuit and through the blood treatment unit. An arterial line withdraws blood from a patient and delivers the withdrawn blood to the blood treatment unit. A venous line returns the treated blood to the patient. The arterial and venous lines can be switched between a first condition in which they are connected to the patient and a second condition in which they are disconnected from the patient and connected to each other for recirculation of blood through the blood circuit. A controller operates the blood pump, and switches the blood pump between a condition in which the dual chambers operate in phase with each other and a condition in which the dual chambers operate out of phase with each other.
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Ash Stephen R.
Carr David J.
Fish & Richardson P.C.
Kim John
Renal Solutions, Inc.
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