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Patent
Title

Diagnostiksystem

Other Title
Device for transporting magnetic beads between fluid areas of microfluid card for detecting target molecule, has magnetic unit placed at distance from receiving unit such that magnetic beads are moved from one fluid area without contact
Abstract
(A1) Die Erfindung betrifft eine Vorrichtung zur beruehrungsfreien Steuerung magnetischer Beads auf einer mikrofluidischen Karte durch externe Magnetfelder, ohne aufwaendige Mechanik oder Hydraulik verwenden zu muessen. Aufgrund einer Modulation eines Magnetfeldgradienten werden magnetische Beads aus verschiedenen Reaktionskammern der mikrofluidischen Karte in einem ersten Schritt kontaktlos angehoben. Mittels einer Translationsbewegung oder einer Variation oder Modulation des Magnetfeldgradienten wird in einem zweiten Schritt ein horizontaler Transport der magnetischen Beads ueber eine mechanische Barriere der mikrofluidischen Karte moeglich. In einem dritten Schritt kann mittels einer weiteren Modulation eines Magnetfeldgradienten ein Absenken der magnetischen Beads in einen gewuenschten weiteren Fluessigkeitsbereich erreicht werden.

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WO 2011015454 A1 UPAB: 20110225 NOVELTY - The device (100) has a positioning unit (106) for producing a relative movement (108) between magnetic beads (101). A receiving unit (105) is designed to transport the beads between fluid areas (102, 103) of a microfluid card (104) via a mechanical barrier (109). A magnetic unit produces a magnetic gradient (110) on the card for relative movement of the beads with respect a moving component (111). The magnetic unit is placed at a distance from the receiving unit such that the beads are relatively moved from one of the fluid area (102) with respect to the moving component without contact. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a microfluid card for inserting into a device for transporting magnetic beads (2) a method for transporting a target molecule using magnetic beards from one fluid area to another fluid area of a microfluid card. USE - Device for transporting magnetic beads between fluid areas of a microfluid card for detecting a target molecule. ADVANTAGE - The device allows contactless control of the magnetic beads on the microfluid card using external magnetic fields without need of expensive mechanic or hydraulic units.
Inventor(s)
Zilch, C.
Gerdes, W.
Faber, S.
Link to Espacenet
http://worldwide.espacenet.com/publicationDetails/biblio?DB=worldwide.espacenet.com&locale=en_EP&FT=D&CC=DE&NR=102009035941A
Patent Number
102009035941
Publication Date
2009
Language
German
Fraunhofer-Institut für Zelltherapie und Immunologie IZI  
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