Device for preparation and analysis of nucleic acids
First Claim
1. A microfluidic device comprising:
- a microfluidic channel having a first end and a second end;
a sample inlet fluidly connected to the first end of the microfluidic channel and configured for receiving a test sample;
a clay treatment chamber fluidly connected to said microfluidic channel, wherein said clay treatment chamber contains a clay mineral reagent;
a sample lysis chamber fluidly connected to said clay treatment chamber, wherein said sample lysis chamber contains an alkaline solution;
one or more sample nucleic acid amplification or detection wells, or combinations thereof, fluidly connected to said sample lysis chamber; and
and one or more sample outlets,wherein said clay treatment chamber is upstream of said sample lysis chamber and said one or more sample nucleic acid amplification or detection wells, and wherein said device is configured such that said test sample exits said clay treatment chamber and enters said sample lysis chamber, thereby contacting said test sample with said alkaline solution to release target nucleic acids.
4 Assignments
0 Petitions
Accused Products
Abstract
An integrated “lab-on-a-chip” microfluidic device performs nucleic acid sample preparation and diagnostic analysis from test samples containing cells and/or particles. The device analyzes DNA or RNA targets, or both, from a common test sample. Dried and/or liquid reagents necessary for nucleic acid sample preparation and analysis are contained on the device, such that the device only requires addition of test sample. Clay mineral and alkaline buffer reagents are employed for overcoming the problems of nucleic acid degradation and contamination during sample preparation. The device may include a composite filter to separate plasma or serum from other blood constituents when the test sample is a blood product. The microfluidic device utilizes a plurality of microfluidic channels, inlets, valves, membranes, pumps, and other elements arranged in various configurations to manipulate the flow of the liquid sample, in particular, in order to prepare nucleic acids and perform further diagnostic analysis.
-
Citations
23 Claims
-
1. A microfluidic device comprising:
-
a microfluidic channel having a first end and a second end; a sample inlet fluidly connected to the first end of the microfluidic channel and configured for receiving a test sample; a clay treatment chamber fluidly connected to said microfluidic channel, wherein said clay treatment chamber contains a clay mineral reagent; a sample lysis chamber fluidly connected to said clay treatment chamber, wherein said sample lysis chamber contains an alkaline solution; one or more sample nucleic acid amplification or detection wells, or combinations thereof, fluidly connected to said sample lysis chamber; and and one or more sample outlets, wherein said clay treatment chamber is upstream of said sample lysis chamber and said one or more sample nucleic acid amplification or detection wells, and wherein said device is configured such that said test sample exits said clay treatment chamber and enters said sample lysis chamber, thereby contacting said test sample with said alkaline solution to release target nucleic acids. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification