Recloseable biosensor

• US 6,488,828 B1
• Filed: 07/20/2000
• Issued: 12/03/2002
• Est. Priority Date: 07/20/2000
• Status: Expired due to Term

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Corporation (Roche Holding AG)
• Inventors: Hill, Brian S., Walling, Douglas Paul, Bhullar, Raghbir Singh
• Primary Examiner(s): Warden, Sr., Robert J.
• Assistant Examiner(s): Olsen, Kaj K.
• Application Number:
  US09/620,191
• Time in Patent Office: 866 Days
• Field of Search: 204/403, 204/403.04, 204/403.14, 204/403.01
• US Class Current: 204/403.01
• CPC Class Codes: B01L 2200/082 Handling hazardous material
• CPC Class Codes: B01L 2300/043 Hinged closures
• CPC Class Codes: B01L 2300/046 Function or devices integrated in the closure
• CPC Class Codes: B01L 2300/047 Additional chamber, reservoir
• CPC Class Codes: B01L 2300/0825 Test strips
• CPC Class Codes: B01L 2300/0887 Laminated structure
• CPC Class Codes: B01L 2300/105 using desiccants
• CPC Class Codes: B01L 2400/0406 capillary forces
• CPC Class Codes: B01L 3/5023 with a sample being transported to, and subsequently stored in an absorbent for analysis
• CPC Class Codes: G01N 33/52 Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements immunological elements G01N33/54386; involving labelled immunochemicals G01N33/58; for haemoglobin or occult blood G01N33/72

Abstract

A recloseable biosensor is provided that comprises a substrate, a sample site positioned on the substrate, and an openable and recloseable cover coupled to the substrate. The cover is operative to selectively block access to the sample site. The cover includes a fixed end coupled to the substrate, an opposite free end, and a middle portion extending across the sample site. The middle portion is releasably and recloseably adhered to the substrate.

Claims

1. A recloseable biosensor comprising:

a substrate formed to include a sample site,

a cover including first and second ends and a middle portion between the ends, the middle portion extending over the sample site,

a first adhesive permanently coupling the first end of the cover to the substrate, and

a second adhesive differing from the first adhesive that is releasably and recloseably coupling the middle portion to the substrate.

2. The biosensor of claim 1, wherein the releasable, resealable adhesive is adhered to the middle portion of the cover.

3. The biosensor of claim 1, wherein the cover includes a tab.

4. The biosensor of claim 3, wherein the releasable, resealable adhesive is spaced-apart from the tab.

5. The biosensor of claim 1, wherein the middle portion includes a sink pad.

6. The biosensor of claim 1, wherein the middle portion includes first and second sections that are foldable relative to one another.

7. A recloseable biosensor comprising:

a substrate formed to include a sample site,

a reagent positioned at the sample site,

a cover extending across the reagent, the cover including a fixed end, an opposite free end, and a middle portion,

a first adhesive permanently coupling the fixed end to the substrate, and

a second adhesive differing from the first adhesive that is releasably and recloseably coupling the middle portion to the substrate.

8. The biosensor of claim 7, wherein the free end includes a tab.

9. The biosensor of claim 7, wherein the releasable, resealable adhesive is permanently adhered to the middle portion of the cover.

10. The biosensor of claim 7, further comprising a sink pad positioned between the middle portion and the substrate.

11. A recloseable biosensor comprising:

a substrate,

a reagent positioned on the substrate,

an openable and recloseable cover including a fixed end coupled to the substrate, an opposite free end, and a middle portion extending between the opposite ends across the reagent, said cover being operative to selectively block access to the reagent,

first and second adhesives coupling the middle portion to the substrate, the first adhesive being spaced-apart from the fixed end and the second adhesive differing from the first adhesive and being a pressure-sensitive, releasable, resealable adhesive.

12. The biosensor of claim 11, wherein the free end includes a tab.

13. The biosensor of claim 11, wherein the releasable, resealable adhesive is permanently adhered to the middle portion of the cover.

14. The biosensor of claim 11, further comprising a sink pad positioned between the middle portion and the substrate.