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:
Oct. 21, 2003
Filed:
Nov. 06, 2000
Bernard Béné, Irigny, FR;
Hospal Industrie, Meyzieu, FR;
Abstract
A haemofiltration machine designed to work with a haemofilter comprises two compartments separated by a semipermeable membrane, one compartment having an inlet connected to a withdrawing tube for taking blood from the patient and an outlet connected to a blood return tube, the other having an outlet connected to a tube for removing used liquid. The machine itself comprises a solution generator for preparing a first injectable solution from at least one concentrated solution; a circulation pump for injecting the first solution at a flow rate of Q into the withdrawing tube; an infusion pump for injecting a patient with a second solution containing a ionic substance [A] with a fixed concentration [A] different from its concentration [A] in the first solution; and a control unit for determining an infusion flow rate Q(post) for the second solution such that the concentration of the ionic substance [A] inside the patient tends towards a required concentration [A] , as a function of [A] , [A] , Q , and the blood flow rate Q .