G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 1/28 (2006.01)
Patent
CA 2676751
Method for dosing a fluid into a receiving channel of a test element (6) for the analysis of body fluids using a dosing device (1). The dosing device (1) comprises a dosing chamber (9), a dosing tube (2), which is in fluid connection to the dosing chamber (9), for transferring fluids into the receiving channel (4) of the test element (6), a dosing element (23), which extends at least partially into the dosing chamber (9), a dosing control device (14) for the dosed control of the fluid flow from the dosing chamber (9) through the dosing tube (2) into the receiving channel (4), and a movement device (16), by which a relative movement may be caused between the dosing tube (2) and the test element (6), the movement path including a rest position and an operating position of the dosing tube (2) relative to the receiving channel (4) of the test element (6) and a dosing tip (3) of the dosing tube (2) being closer to the receiving channel (4) in the operating position than in the rest position. The method comprises the following steps: actuating the movement device (16) in such a manner that the dosing tube (2) is moved out of the rest position into the operating position and actuating the dosing control device (14) in such a manner that a defined quantity of fluid is discharged in dosed form from the dosing chamber (9) through the dosing tube (2) into the receiving channel (4) of the test element (6). The tip (3) of the dosing tube (2) approaches the receiving channel (4) of the test element (6) in the operating position in such a manner that during the dosed discharge, a fluid bridge is formed between the dosing tip (3) of the dosing tube (2) and the receiving channel (4) of the test element (6) and at the end of the dosed fluid discharge, at least parts of the fluid reach the receiving channel (4) through suction force.
Bauer Andreas
Degenhardt Volker
F. Hoffmann-La Roche Ag
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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