Micro mechanical methods and systems for performing assays
The present invention provides a micro mechanical system for performing assays for determining the presence of one or more selected analytes in a sample. The device comprises of a base and a disposable strip with at least one reaction well and at least one moveable member capable of moving fluids and parts through the fluids in a defined reaction well. Reagents in the reaction chambers and or the moveable members, react with the sample to yield a physically detectable change. The moveable parts are capable of executing motions that either mix, move reaction components, exchange or systematically deliver reagents to targets in the cartridge. Sensors in the base are configured to detect and or quantify the presence of a sample in the reaction well and of analytes in the sample. The signal is converted to an output on a visual display window on the external part of the base.
1. A disposable strip comprising:
a first solid substrate comprising a sample collection well, a reference well, and a reaction well, wherein the wells are in fluidic communication via a first capillary channel, and wherein the reference well and the reaction well comprise a lysing agent;
a second solid substrate comprising holes wherein the first solid substrate and the second solid substrate are joined and the holes communicate with the wells; and
a membrane having a capture zone wherein the membrane is connected to the reaction well via a second capillary channel.
2. The disposable strip of claim 1 , wherein the first substrate and the second substrate are rectangular.
3. The disposable strip of claim 1 , wherein the substrate is selected from the group consisting of plastic, glass, nylon, metal, and combinations thereof.
4. The disposable strip of claim 3 , wherein the substrate is plastic.
5. The disposable strip of claim 1 , further comprising a stir bar in the reaction well.
6. The disposable strip of claim 1 , further comprising an antibody deposited in the reaction well.
7. The disposable strip of claim 6 , wherein the antibody is specific for HbA1c.
8. The disposable strip of claim 1 , wherein the lysing agent is a nonionic surfactant.
9. The disposable strip of claim 1 , wherein the membrane is interposed between an absorbent pad and the reaction well.
10. The disposable strip of claim 1 , wherein the substrate is selected from the group consisting of plastic, glass, nylon, metal, and combinations thereof.
11. The disposable strip of claim 10 , wherein the substrate is plastic.
12. A disposable strip comprising:
a first solid substrate comprising a sample application well, a reference well, and a reaction well, wherein the wells are in fluidic communication via capillary channels, and wherein the reference well comprises a first lysing agent and the reaction well comprises a second lysing agent, an antibody, and a stir bar;
a second solid substrate comprising holes wherein the first solid substrate and the second solid substrate are joined and the holes communicate with the wells; and
a membrane having a capture zone wherein the membrane is connected to the reaction well via a second capillary channel.
13. The disposable strip of claim 12 , wherein the first substrate and the second substrate are rectangular.
14. The disposable strip of claim 12 , wherein the first and the second lysing agents are nonionic surfactant.
15. The disposable strip of claim 12 , wherein the antibody is specific for HbA1c.