Devices, systems and methods for the containment and use of liquid solutions
The present invention includes devices, systems and methods for containing and using liquid solutions. The devices include liquid containment structures and packages of such liquid containment structures for containing single doses of a liquid solution for subsequent use. The systems include at least one subject containment structure or package of containment structures and the liquid solution for which they are intended to contain. The liquid solutions may comprise any type of agent, reagent or control solution. The subject methods involve the use of the liquid containment structures and packages thereof as well as methods of providing a control solution for use to evaluate a system's performance.
1. A system for use in evaluating the performance of a physiological fluid sampling and analyte concentration measurement system, comprising:
a microneedle having a fluid transfer channel;
at least one containment structure comprising a first layer and a second layer sealed together to form a hermetically sealed cavity there between wherein a surface area of contact between said first and second layers define a frame about a perimeter of said cavity, and wherein said first layer comprises a flexible material, has a thickness in the range from about 0.1 mm to about 1.0 mm and is configured to be penetrable by said microneedle wherein said microneedle is configured to penetrate said first layer without tearing or rupturing said first layer, and wherein said second layer comprises a rigid material; and
a control solution contained within said cavity, said control solution configured to mimic said physiological fluid.
2. The system of claim 1 wherein said control solution is provided as a single dose.
3. The system of claim 2 wherein said single dose has a volume in the range from about 100 nL to 200 μL.
4. The system of claim 3 wherein said single dose has a volume in the range from about 1 to 20 μL.
5. The system of claim 1 wherein said flexible material is a polymer film.
6. The system of claim 1 wherein said rigid material comprises a plastic material.
7. The system of claim 6 wherein said plastic material comprises one of the group consisting of polypropylene, polyvinylidine chloride, acrylonitril-butadiene-styrene terpolymer (ABS), high density polyethylene (HDPE) and polyvinyl chloride (PVC).
8. The system of claim 1 wherein said rigid material comprises a thick foil laminate.
9. The system of claim 1 wherein said first layer has a thickness in the range from about 0.1 to 0.5 mm.
10. The system of claim 1 wherein said cavity is formed exclusively within said second layer.
11. The system of claim 1 wherein said frame has a surface area in the range from about 40 to over 500 mm 2 .
12. The system of claim 11 wherein said frame has a surface area in the range from about 100 to 150 mm 2 .
13. The system of claim 1 further comprising a plurality of said containment structures wherein said structures are contiguous with and separable from each other.
14. The system of claim 13 wherein said structures are separable by means of pre-scored marks formed between said structures.
15. The system of claim 13 wherein said plurality of containment structures are provided in an array configuration.
16. The system of claim 13 wherein said plurality of containment structures is provided in a strip configuration wherein said containment structures are in a serial arrangement.
17. The system of claim 16 wherein said strip of containment structures is provided within a dispenser.
18. The system of claim 13 wherein said plurality of containment structures is provided in a sheet configuration.
19. A method for evaluating the performance of a physiological fluid sampling and analyte concentration measurement system wherein said measurement system includes a tester comprising said microneedle integrated with a sensor and said fluid transfer channel extending from said microneedle to said sensor, said method comprising the steps of:
providing the system of claim 1 ;
operatively positioning the tester with respect to said at least one containment structure wherein said microneedle is aligned with said cavity;
dispensing said microneedle to penetrate into said cavity; and
evaluating the performance of said microneedle in penetrating said cavity.
20. The method of claim 19 further comprising the step of evaluating said sensor's performance in measuring a target analyte concentration of said control solution.
21. The method of claim 19 further comprising the step of evaluating the performance of a meter employed with said tester.
22. A kit for evaluating the performance of a physiological fluid sampling and analyte concentration measurement system, comprising the system of claim 1 .
23. The kit of claim 22 further comprising instructions for using said system.