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    • 8. 发明申请
    • Assays Based on Liquid Flow over Arrays
    • 基于液体流过阵列的测定
    • US20110207621A1
    • 2011-08-25
    • US12918757
    • 2009-02-20
    • Jean I. MontaguHerman DeweerdNatalia A. RodionovaNathan Tyburczy
    • Jean I. MontaguHerman DeweerdNatalia A. RodionovaNathan Tyburczy
    • C40B30/04C40B60/12C40B30/00C40B50/00F04B43/00
    • B01L3/502784B01L3/5023B01L3/502723B01L2200/0684B01L2200/10B01L2200/16B01L2300/0672B01L2300/0816B01L2300/0867B01L2400/0481B01L2400/0487B01L2400/0683
    • Flow-through assay reaction chamber (6) of cassette has back and forth liquid mixing in narrow gap (G) over array of capture agent (S), with net flow advance to waste confinement (19), produced by reversible pumps (3 or 12), operable with rolling diaphragm action with at least limited elastic recovery that advance sample or buffer liquids through conditioning paths (4A, 8, 8′, 9, 14, 15, 15′) before reaching the reaction chamber (6). A single pump produces accurate flow control, liquid conditioning, e.g., liquefying dry reagent from internal surfaces of flow-dividing material (14a, 15A, 15A′, e.g. open cell foam or frit), heating (4A), and air bubble removal (8, 8′, 9), as well as replenishment of reagent while accomplishing mixing within the flow-through reaction chamber (6). Lower viscosity buffer liquid is arranged to propel higher viscosity reagent, the flow-dividing storage material preserving reagent concentration. A blister pack (11) acts as a reversible pump (12) in producing accurate forward and backward flows with the net flow advance. Cascaded bubble traps (8, 9) on the cassette render the system tolerant of minor pumping error during cassette priming.
    • 盒的流通测定反应室(6)在捕获剂(S)的阵列上具有窄间隙(G)中的液体混合,净流量进入废水约束(19),由可逆泵(3或 12),其具有至少有限的弹性恢复的滚动隔膜作用,可在到达反应室(6)之前通过调节路径(4A,8,8',9,14,15,15')推进样品或缓冲液体。 单个泵产生精确的流量控制,液体调节,例如从分流材料(14a,15A,15A',例如开孔泡沫或玻璃料)的内表面液化干试剂,加热(4A)和气泡去除 8,8',9),以及在流通反应室(6)内完成混合的同时补充试剂。 较低粘度的缓冲液体配置为推进较高粘度的试剂,分流储存材料保留试剂浓度。 泡罩包装(11)用作可逆泵(12),用于净流量提前产生精确的向前和向后的流动。 卡带上的级联气泡捕集器(8,9)使得系统在盒式启动期间容忍较小的泵送误差。