Calibration material delivery devices and methods
These are devices and methods of delivering calibration or control information to a device, such as an analyte monitor. The devices may include a first portion configured to be grasped by the hand of the user, and a second portion including a reservoir and a flexible neck. The reservoir may contain a control material that contains a target analyte in a known or predetermined concentration.
1. A device comprising:
a first portion configured to be grasped by a hand of a user; and
a second portion comprising:
a reservoir containing a first control material, wherein the control material comprises a target analyte of a known or a predetermined concentration; and
a flexible neck configured to permit relative movement between the first portion and the reservoir, wherein the flexible neck comprises a first narrow neck region, a second narrow neck region, and an enlarged neck region between the first and second narrow neck regions.
2. The device of claim 1 , further comprising a frangible seal which contains the control material within the reservoir, and shields the control material from exposure to the environment.
3. The device of claim 1 , wherein the control material comprises a control liquid or solution.
4. The device of claim 3 , wherein the control material comprises an absorbent material upon which the control liquid or solution is absorbed.
5. The device of claim 1 , wherein the first portion is in the form of a flattened shape.
6. The device of claim 5 , wherein the first portion has a cross-section which is relatively thin at its middle, and relatively wider at its ends.
7. The device of claim 6 , further comprising a slippage reducing feature.
8. The device of claim 7 , wherein the slippage reducing feature comprises one or more ribs disposed on the first portion.
9. The device of claim 1 , wherein the first portion and the second portion are formed as separate components which are joined together.
10. The device of claim 1 , wherein the first and second portions are integrally formed.
11. The device of claim 10 , wherein the first and second portions are part of a one-piece monolithic structure.
12. The device of claim 2 , wherein the frangible seal comprises a pierceable foil.
13. The device of claim 2 , wherein the frangible seal comprises a hinge and a cap portion configured to mate with and seal the reservoir.
14. The device of claim 1 , further comprising a third portion defining a reservoir containing a second control material.
15. The device of claim 14 , wherein the first and second control materials are substantially the same.
16. The device of claim 14 , wherein the first and second control materials are different.
17. The device of claim 1 , wherein the control material further comprises at least one marker indicative of the presence of the control material.
18. The device of claim 17 , wherein the marker is composed to produce a color change possessing a degree of magnitude such that it is indicative of the presence of the control material.
19. The device of claim 18 , wherein the marker comprises a dye.
20. The device of claim 17 , wherein the marker is composed to produce a temporary color change indicative of the presence of the control material.