Embossed test strip system

• US 20040229347A1
• Filed: 03/17/2004
• Published: 11/18/2004
• Est. Priority Date: 09/17/2001
• Status: Abandoned Application

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Inventors: Perez, Edward P.
• Application Number:
  US10/802,157
• Publication Number:
  US 20040229347A1
• Time in Patent Office: Days
• US Class Current: 435/287.2
• CPC Class Codes: G01N 33/521 Single-layer analytical elements
• CPC Class Codes: G01N 33/523 the element being adapted for a specific analyte
• CPC Class Codes: G01N 33/558 using diffusion or migration of antigen or antibody immunochromatographic test strips G01N33/54387

Abstract

A bodily fluid sampling device includes a support member that defines an aperture to receive a bodily fluid sample and a cover member. A test strip is compressed between the support member and the cover member to form an embossed pillow within the aperture. The embossed pillow is adapted to absorb the bodily fluid sample. The test strip has an incision surrounding the embossed pillow to minimize leakage of the bodily fluid sample from the embossed pillow. The support member can further include a blade that surrounds the aperture to form the incision around the embossed pillow.

Claims

1. A test strip assembly, comprising:

a support member defining an aperture to receive a bodily fluid sample;

a cover member;

a test strip compressed between said support member and said cover member to form an embossed pillow within said aperture, said embossed pillow being adapted to absorb the bodily fluid sample; and

wherein said test strip has an incision surrounding said embossed pillow to minimize leakage of the bodily fluid sample from said embossed pillow.

2. The test strip assembly of claim 1, wherein said support member has a blade member surrounding said aperture to form said incision in said test strip.

3. The test strip assembly of claim 1, wherein:

said support member includes a capillary tube to collect the bodily fluid sample; and

said aperture includes a microtitration pocket defined in said support member.

4. The test strip assembly of claim 1, wherein said test strip includes:

a wicking layer adapted to absorb the bodily fluid sample;

a test matrix for reacting with the bodily fluid sample; and

wherein said incision is formed in said wicking layer.

5. The test strip assembly of claim 4, wherein said incision is further formed through said wicking layer and said test matrix.

6. The test strip assembly of claim 4, wherein said test strip includes a top layer positioned between said top member and said test matrix.

7. A test strip assembly, comprising:

a wicking layer to collect a bodily fluid sample; and

a support member defining an opening, said support member having a blade member extending around said opening and contacting said wicking layer to minimize flow of the fluid sample in said wicking layer from said opening.

8. The test strip assembly of claim 7, wherein:

said wicking layer defines an incision that coincides with said opening to minimize flow of the fluid sample in said wicking layer from said opening; and

said blade member is adapted to cut said incision in said wicking layer.

9. The test strip assembly of claim 7, wherein said blade member compresses said wicking layer to minimize flow of the fluid sample in said wicking layer from said opening.

10. The test strip assembly of claim 7, further comprising a capillary tube provided over said wicking layer to deliver the bodily fluid sample to said wicking layer.

11. The test strip assembly of claim 7, further comprising:

a top layer; and

a test matrix positioned between said top layer and said wicking layer for analyzing the bodily fluid sample.

12. The test strip assembly of claim 7, wherein said wicking layer has a microtitration pillow surrounded by said blade member.

13. A test strip, comprising:

a test matrix to test a bodily fluid sample; and

a wicking layer provided over said test matrix, said wicking layer having an embossed pillow for absorbing the bodily fluid sample, said wicking layer having an incision surrounding said embossed pillow to minimize leakage of the bodily fluid sample from said embossed pillow.

14. The test strip of claim 13, further comprising a top layer covering said test matrix.

15. The test strip of claim 13, wherein said incision has a circular shape.

16. The test strip of claim 13, wherein said incision is continuous.