Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1991-01-18
1992-12-29
Johnston, Jill A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
422 63, 422 681, G01N 3102, G01N 3350, G01N 3500
Patent
active
051749610
ABSTRACT:
Coagulation related activities are detected in a fluid sample in a plunger sensor cartridge. The cartridge includes a test cell with a reagent chamber and a reaction chamber and a plunger assembly. A reagent drive subassembly forces the contents of the reagent chamber into the reaction chamber. The plunger assembly is raised and released by a plunger lifting subassembly to allow it to descend through the sample of liquid in the bottom of the reaction chamber. A dispenser subassembly automatically meters precise quantities of fluid into the test cells. The plunger lifting subassembly and the reagent drive subassembly are mechanically separate and are controlled separately. Stepper motors are used to provide precise control over the degree, rate and sensitivity of movement of the plunger lifting subassembly, the reagent drive subassembly and the dispensing subassembly.
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HemoTec, Inc.
Johnston Jill A.
Ley John R.
Winsor Bruce R.
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