The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2011
Filed:
May. 31, 2006
David J. Carr, West Lafayette, IN (US);
Stephen R. Ash, Lafayette, IN (US);
David J. Carr, West Lafayette, IN (US);
Stephen R. Ash, Lafayette, IN (US);
Renal Solutions, Inc., Warrendale, PA (US);
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 An arterial line withdraws blood from a patient and delivers the withdrawn blood to the blood treatment unit.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.