| 摘要 |
Described is a modular microfluidic device (MMD) for producing an analyte composition from a biological fluid sample, said device comprising a reagent module (RM) comprising a reagent reservoir containing a reagent and an eluent reservoir containing an eluent, said reagent and eluent reservoirs being coupled to one or more RM microchannels; and a sample preparation module (SPM) comprising a SPM microchannel adapted to couple with the RM microchannel whereby fluid continuity between SPM and RM microchannels is produced on coupling, and: (i) a sample inlet for receiving said biological fluid sample; (ii) an outlet for delivering said analyte composition; (iii) a sensor component; (iv) a mixing chamber; (v) a metering chamber; (vi) an eluent chamber; (vii) a valve; and (viii) a solid phase extraction element (SPE);wherein said metering chamber is of fixed volume and shape and substantially ellipsoidal, the metering chamber having an inlet and an outlet, said inlet and/or outlet being in fluid communication with one or more microchannel(s) of the MMD. |
