Abstract: The invention relates to a fluid providing apparatus (5; 34) for providing a fluid to an analyzing apparatus (17; 33) for analyzing the fluid and to the analyzing apparatus (17; 33). The fluid providing apparatus (34) comprises a casing (35), which has an introduction opening (7), through which a fluid transferring element (1) is introducible into the casing (35) for transferring the fluid to the fluid providing apparatus (34). The casing (35) comprises further a fluid releasing section (8) for releasing the fluid from the fluid transferring element (1) and a fluid transferring element detection section (36) for detecting whether the fluid transferring element (1) is introduced into the casing (35) by interacting with a fluid transferring element detection unit of the analyzing apparatus (17; 33).

Abstract: The invention relates to a cartridge (100) and a corresponding sensor device for the detection of target components in a liquid sample. The cartridge (100) comprises a sample chamber(SC), at least two reservoirs(131, 132) that can be furnished with magnetic particles(MP, MP?), and at least two corresponding sensitive zones (121, 122) in which solved magnetic particles and/or target components can be detected. When a magnetic actuation field(B) of a given configuration is established in the sample chamber, the magnetic particles of different reservoirs migrate predominantly to different sensitive zones. Thus a mixing of magnetic particles can be avoided.

Abstract: A sensor device (50) for sensing magnetic particles (15), the sensor device (50) comprising a substrate (25) and a sensing unit (11, 20) provided on and/or in and/or near the substrate (25) and being adapted for sensing a detection signal indicative of the presence of the magnetic particles (15), and a magnetic field control unit (30 to 34) provided off the substrate (25) and being adapted for generating a time-dependent magnetic field for interaction with the magnetic particles (15).

Abstract: The invention provides for a biosensor system (1), wherein the system comprises a biosensor magnet assembly (10) with at least three electromagnetic subunits (20a, 20b, 20c). The magnetic field strength of each electromagnetic subunit is separately changeable by electrical control. Further, the system comprises a detachable biosensor cartridge (30) having a sensor surface and adapted to be arranged with the sensor surface adjacent to the biosensor magnet assembly (10). The invention further provides a method for steering the movement of magnetic particles in a biosensor cartridge (30). The method comprises the steps (a) and (b): in step (a), a sensor surface of a detachable biosensor cartridge (30) is arranged adjacent to a biosensor magnet assembly (10). The biosensor magnet assembly comprises three electromagnetic subunits (20a, 20b, 20c), wherein the magnetic field strength of each subunit is separately changeable by electrical control.

Abstract: The present invention provides a method of measuring the concentration of molecules in a sample fluid or analyte. Said method comprises the step of mixing the fluid with label particles within a cartridge, wherein the label particles are adapted to capture said molecules and to bind to a sensor surface of said cartridge. Then, the label particles are sedimented towards the sensor surface and the amount of label particles close to the sensor surface is measured. Subsequently, the label particles, which are not bound to the surface, are removed in a “washing” step and finally the amount of label particles close to the sensor surface is measured again.

Abstract: The invention relates to a magnet system for biosensors. To achieve a magnetic system, which can switch between attraction force and repulsion force, near the sensor surface, the magnetic system has at least one coil (1) and a ferromagnetic open ring system (3), where both magnetic pole faces are adjacent to each other over a gap (4) in which the biosensor is located, and where the coil (1) or the ferromagnetic core (2) in the coil, or an inner part of the ferromagnetic core in relation to each other are shiftable, in order to change the magnetic force direction near the biosensor surface.

Abstract: The invention relates to an electromagnetic system for biosensors, in which the system can switch quickly between high magnetic gradients, without the need of movement of mechanical elements. This is realized by two independent electromagnetic units (1,1? 2, 2?) which are separated in the region of the pole shoes over a gap, in which a sample volume is arranged by a cartridge (3), and in which the sensor surfaces of the biosensor are located at one or more inner surfaces of the cartridge (3).

Abstract: A sensor device (50) for sensing particles (15) of a sample, the sensor device (50) comprising a sensing unit (11, 20) adapted for sensing a detection signal indicative of the presence of the particles (15), a viscosity measurement unit (11, 17, 20) adapted for measuring the viscosity of the sample, and a correction unit (20, 30) adapted for correcting the detection signal based on the measured viscosity.

Abstract: The invention relates to a sensor device, particularly a magnetic sensor device (200), for detecting magnetic particles (2) in a sensitive region (202) of a sample chamber (201). Magnetic particles (1) can be moved with the help of magnetic forces from the sensitive region (202) into a dump region (203), which is arranged such that the magnetic particles (1) cannot return to the sensitive region (202) by pure sedimentation. The separation between the sensitive and the dump region can optionally be enforced by a barrier (204).

Abstract: The present invention relates to systems and methods for magnetic actuation of particles from and toward the surface of a sensor with a magneto-resistive element. The orientation of magnetic fields and arrangement of magnetic field generating means with respect to the sensor maintains or restores the sensitivity of the magneto-resistive element after actuation.

Abstract: The invention relates to a magnetic system, especially for use with biosensors. It aims at developing a magnetic system for biosensors, which can switch between attraction force and repulsion force near the sensor surface. The arrangement has a magnetic system for biosensors, with at least one magnetic source and a sensor or sensor surface which corresponds with the magnetic field in a way that the magnetic source creates inhomogeneous magnetic field lines that results in a magnetic force towards the magnetic system and which subsequently or adjacently exerts a magnetic force directed away from the magnetic system with all magnetic forces generated at the same source of the magnetic means.