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:
Aug. 18, 1987
Filed:
Jan. 10, 1983
Rhone-Poulenc S.A., Courbevoie, FR;
Abstract
Apparatus/process for the withdrawal and return of liquid materials from a donor source, comprising means for withdrawing whole blood from a mammalian donor; a membranous blood filtration cell which includes a membrane separator/filter, a compartment downstream therefrom for receiving a blood plasma fraction and a compartment upstream thereof for receiving a blood cellular component fraction; conduit means for communicating the withdrawal means and an inlet end of the upstream compartment; a collection vessel; conduit means for communicating an outlet end of said upstream compartment and said collection vessel; means for determining the volume of liquid material withdrawn from the donor source during a withdrawal stage; means for back-filtering and returning liquid material from said collection vessel to the donor source; a second collection vessel; and conduit means for communicating an outlet end of the downstream compartment and the second collection vessel.