Filtered Assay Device and Method
AssigneePhotonic BioSystems, Inc.
InventorsDavid L. PUTNAM, Jason A. Putnam, Todd W. Hubbard
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Abstract
A method and device is provided for collecting filterable material to perform assays on a filtration apparatus by applying negative-pressure to the inlet chamber of the filtration apparatus which is independent of negative or positive pressure applied to its fluid path. The negative-pressure applied to the inlet chamber serves to actively aspirate fluid and promote flow into the inlet chamber via the fluid pathway. The negative-pressure applied to the inlet chamber facilitates the use of either negative or positive-pressure based fluid-filtration approaches. Use of the invention improves the functionality and scope of applications that can be performed with enclosed filtration apparatuses.
Claims32
A method for separating and collecting filterable material from a fluid, comprising the steps of:
- (i) aspirating fluid into a filter apparatus under negative-pressure created in said filter apparatus;
- (ii) passing said fluid through said filter apparatus exposing it to a filtering means capable of trapping and retaining filterable material in the filter apparatus;
- and
- (iii) discharging said fluid from said filter apparatus with said filterable material no longer in said fluid.
Dependencies are inferred from the claim text.