A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/30 (2006.01)
Patent
CA 2556458
Single needle device for extracorporeal treatment of blood 1 comprising a treatment unit 3 having a first compartment 4 and a second compartment 5 separated by a semipermeable membrane 6, a single needle extracorporeal blood circuit with an intake line 7 and a return line 8, and a purge line 9 at the outlet of the second compartment 5. Closure means acts on intake line 7 and return line 8 to alternate blood intake and return. A first chamber 12 is in fluid communication with the extracorporeal blood circuit, defines a first additional blood volume of variable total content and includes a wall capable of being moved by means 19 acting on the chamber 12, making it possible to store blood during the arterial phase and release blood during the venous phase.
La présente invention se rapporte à un dispositif à aiguille unique destiné au traitement extracorporel du sang (1). Le dispositif selon l'invention comprend : une unité de traitement (3), qui possède un premier compartiment (4) et un second compartiment (5), séparés par une membrane semi-perméable (6) ; un circuit de sang extracorporel à aiguille unique, doté d'un tube d'admission (7) et d'un tube de renvoi (8) ; et un tube de purge (9) à la sortie du second compartiment (5). Un moyen de fermeture agit sur le tube d'admission (7) et le tube de renvoi (8) afin d'alterner l'admission et le renvoi du sang. Une première chambre (12) se trouve en communication fluidique avec le circuit de sang extracorporel, définit un premier volume sanguin supplémentaire de teneur totale variable, et possède une paroi pouvant être déplacée par des moyens (19) agissant sur la chambre (12), ce qui permet de stocker le sang pendant la phase artérielle et de libérer le sang pendant la phase veineuse.
Chevallet Jacques
Frugier Alain
Romarie Jean-Louis
Gambro Lundia Ab
Robic
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