Surgery – Blood drawn and replaced or treated and returned to body – Constituent removed from blood and remainder returned to body
Reexamination Certificate
2011-07-26
2011-07-26
Deak, Leslie R (Department: 3761)
Surgery
Blood drawn and replaced or treated and returned to body
Constituent removed from blood and remainder returned to body
C604S005040, C604S005010, C604S006110, C210S645000, C210S646000
Reexamination Certificate
active
07985196
ABSTRACT:
A method and a hemodialysis machine provide for at least partial emptying of an extracorporeal blood circulation after patient blood in the circulation has been returned to the patient via an infusion liquid which displaces the blood. The method includes emptying at least a blood chamber of a hemodialyzer subdivided by a semipermeable membrane into the blood chamber and a dialysis fluid chamber without additionally connecting an arterial blood line and a venous blood line of the circulation to one another. The arterial blood line is actively or passively aerated at a first point and the venous blood line is actively or passively aerated at a second point. The infusion liquid is emptied through the membrane into the dialysis fluid chamber and then via a dialysis fluid discharge line. The method is operable by a control program that runs automatically without requiring any manual input after activation of the program.
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patent: 4444597 (1984-04-01), Gortz et al.
patent: 5336165 (1994-08-01), Twardowski
patent: 34 42 744 (1986-06-01), None
patent: WO 96/40313 (1996-12-01), None
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Machine translation of DE 3442744.
English translation of DE 3,442,744 as provided by the USPTO translation service, Nov. 2010.
Kopperschmidt Pascal
Noack Joachim
Deak Leslie R
Fresenius Medical Care Deutschland GmbH
Jacobson & Holman PLLC
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