Finger Swipe Fluid-Transfer Collection Assembly and Method of Using the Same

• US 20100050789A1
• Filed: 08/25/2009
• Published: 03/04/2010
• Est. Priority Date: 08/26/2008
• Status: Active Grant

• Current Assignee: NESS Technologies Incorporated
• Original Assignee: Infusion Innovations Inc.
• Inventors: Stroup, David Karl
• Granted Patent: US 8,043,864 B2
• Time in Patent Office: Days
• US Class Current: 73/863.230
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: B01L 2200/0684 Venting, avoiding backpressure, avoid gas bubbles
• CPC Class Codes: B01L 2300/0816 Cards, e.g. flat sample carriers usually with flow in two horizontal directions
• CPC Class Codes: B01L 2300/0887 Laminated structure
• CPC Class Codes: B01L 2400/0487 fluid pressure, pneumatics
• CPC Class Codes: B01L 3/50273 characterised by the means or forces applied to move the fluids micropumps F04B19/006, of the membrane type F04B43/043
• CPC Class Codes: G01N 1/14 Suction devices, e.g. pumps; Ejector devices
• CPC Class Codes: Y10T 436/2575 Volumetric liquid transfer

Abstract

A method of using a finger swipe fluid transfer collection assembly includes providing a finger swipe fluid transfer collection assembly including a base, a test media carried by the base, an inlet for receiving a sample fluid, an outlet, a finger swipe fluid transfer mechanism carried by the base between the inlet and the outlet and including an interior; swiping the finger swipe fluid transfer mechanism with one'"'"'s finger to impart a negative pressure in the interior of the finger swipe fluid transfer mechanism to draw the sample fluid into the interior of the finger swipe fluid transfer mechanism through the inlet; and swiping the finger swipe fluid transfer mechanism again with one'"'"'s finger to impart a positive pressure in the interior of the finger swipe fluid transfer mechanism to pump the sample fluid through the outlet and be transferred to the test media.

Claims

1. A method of using a finger swipe fluid transfer collection assembly, comprising:

providing a finger swipe fluid transfer collection assembly including a base, a test media carried by the base, an inlet for receiving a sample fluid, an outlet, a finger swipe fluid transfer mechanism carried by the base between the inlet and the outlet and including an interior;

swiping the finger swipe fluid transfer mechanism with one'"'"'s finger to impart a negative pressure in the interior of the finger swipe fluid transfer mechanism to draw the sample fluid into the interior of the finger swipe fluid transfer mechanism through the inlet;

swiping the finger swipe fluid transfer mechanism again with one'"'"'s finger to impart a positive pressure in the interior of the finger swipe fluid transfer mechanism to pump the sample fluid through the outlet and be transferred to the test media.

2. The method of claim 1, wherein the interior of the finger swipe fluid transfer mechanism includes a second fluid, and swiping the finger swipe fluid transfer mechanism with one'"'"'s finger imparts a negative pressure in the interior of the finger swipe fluid transfer mechanism to draw the sample fluid into the interior of the finger swipe fluid transfer mechanism through the inlet to mix with the second fluid;

and swiping the finger swipe fluid transfer mechanism again with one'"'"'s finger impart a positive pressure in the interior of the finger swipe fluid transfer mechanism to pump the mixed sample fluid and second fluid through the outlet and be transferred to the test media.

3. The method of claim 1, wherein the finger swipe fluid transfer mechanism is longitudinally elongated and swiping includes applying pressure to the finger swipe fluid transfer mechanism with one'"'"'s finger while moving one'"'"'s finger in an inlet-to-outlet longitudinal direction along the finger swipe fluid transfer mechanism.

4. The method of claim 1, wherein the base is a flat, rectangular, elongated base.

5. The method of claim 1, wherein the inlet and the outlet are checkvalve-less.

6. The method of claim 1, wherein the base includes a vent.

7. The method of claim 1, wherein the base includes a tip.

8. The method of claim 1, wherein the base includes an outer surface and a clear flexible polyethylene top covers the outer surface of the base.

9. The method of claim 8, wherein a portion of the clear flexible polyethylene top forms the finger swipe fluid transfer mechanism.

10. The method of claim 1, wherein the finger swipe fluid transfer collection assembly further includes a sample tube having a proximal end connected to the inlet and a distal end, and the method further includes communicating the distal end of the sample tube with the sample fluid to draw the sample fluid into the interior of the finger swipe fluid transfer mechanism.

11. The method of claim 10, wherein the sample tube is at least one of fixed to the inlet, retractable, not retractable, locked to the inlet, not locked to the inlet, detachably connectable to the inlet.

12. The method of claim 1, wherein the finger swipe fluid transfer collection assembly further includes at least one of a wick, sponge, open-cell foam, porous material, and an absorbent material connected to the inlet, and the method further includes communicating at least one of the wick, sponge, open-cell foam, porous material, and an absorbent material with the sample fluid to draw the sample fluid into the interior of the finger swipe fluid transfer mechanism.

13. The method of claim 1, wherein the method is an assay test method, the sample fluid includes an analyte of interest for assay testing, the second fluid is a reagent, and the test media visually indicates the presence or absence of an analyte of interest.

14. The method of claim 1, wherein the method is a test method for testing at least one of drug screening, chemical analysis, crime/accident scene investigations, ground water testing (EPA), and livestock testing.

15. The method of claim 1, wherein the sample fluid is a fluid medium of at least one of a gas, a liquid, a suspension, an extracted or dissolved sample, and a supercritical fluid.

16. The method of claim 1, wherein the sample fluid includes a sample including one or more target analytes of interest for detection.

17. The method of claim 16, wherein the one or more target analytes of interest include at least one of antigen, antibody, receptor, ligands chelate, protein, enzyme, nucleic acid, DNA, RNA, pesticide, herbicide, inorganic compound, organic compounds, a material for which a specific binding reagent exists.

18. The method of claim 1, wherein test media indicates at least one of presence, absence, and concentration of one or more analytes.

19. The method of claim 1, wherein the finger swipe fluid transfer collection assembly includes multiple finger swipe fluid transfer mechanisms.

20. A finger swipe fluid transfer collection assembly, comprising:

a base;

a test media carried by the base;

an inlet for receiving a sample fluid;

an outlet;

a finger swipe fluid transfer mechanism carried by the base between the inlet and the outlet and including an interior, the finger swipe fluid transfer mechanism swipeable with one'"'"'s finger to impart a negative pressure in the interior of the finger swipe fluid transfer mechanism to draw the sample fluid into the interior of the finger swipe fluid transfer mechanism through the inlet, and swipeable again with one'"'"'s finger to impart a positive pressure in the interior of the finger swipe fluid transfer mechanism to pump the sample fluid through the outlet and be transferred to the test media.