DEVICE WITH A PRE-DEFINED AND GUIDED CAPILLARY FILL DESIGN

• US 20080197018A1
• Filed: 02/16/2007
• Published: 08/21/2008
• Est. Priority Date: 02/16/2007
• Status: Abandoned Application

• Current Assignee: Jin Han
• Original Assignee: Jin Han
• Inventors: Han, Jin
• Application Number:
  US11/675,945
• Publication Number:
  US 20080197018A1
• Time in Patent Office: Days
• US Class Current: 204/412
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52

Abstract

The present invention discloses a device with a predefined capillary fill design comprising a substrate (1), a working electrode (2), a reference electrode (3), a functional electrode (4), a reaction chamber (5) and a plastic covering film (6), wherein the reaction chamber (5) is provided with one or more hydrophilic guiding channels extending from the entrance of the reaction chamber (5). Therefore, the device according to the invention may be easily manufactured and operated with a high accuracy, without the need to provide a delicate hydrophilic film with special coating.

Claims

1. A device with a predefined capillary fill design, comprising a substrate (1), a working electrode (2), a reference electrode (3), a functional electrode (4), a reaction chamber (5) and a plastic covering film (6), characterized in that:

the reaction chamber (5) is provided with one or more hydrophilic guiding channels extending from the entrance of the reaction chamber (5).

2. The device with a predefined capillary fill design according to claim 1, wherein the hydrophilic guiding channel is formed by depositing any hydrophilic ingredient on the substrate (1).

3. The device with a predefined capillary fill design according to claim 2, wherein the hydrophilic guiding channel is formed on the substrate (1) by thick film printing, injection printing, spraying, or other coating methods.

4. The device with a predefined capillary fill design according to claim 2, wherein the hydrophilic ingredient is an enzyme catalytic reaction reagent.

5. The device with a predefined capillary fill design according to claim 2, wherein the hydrophilic ingredient is a mixture of surfactant and enzyme catalytic reaction reagent.

6. The device with a predefined capillary fill design according to claim 1, wherein the height of the reaction chamber (5) is within the range of 0.001 mm to 1 mm.

7. The device with a predefined capillary fill design according to claim 6, wherein the length of the hydrophilic guiding channel is no less than 0.5 mm.

8. The device with a predefined capillary fill design according to claim 7, wherein the entrance of the reaction chamber (5) may be configured to be circular, semi-circular, elliptical, semi-elliptical, rectangular, square, triangular, trapezoidal or any other suitable shapes or a combination thereof within the region of the reaction chamber.

9. The device with a predefined capillary fill design according to claim 1, wherein the plastic covering film (6) is a normal hydrophobic plastic film.

10. The device with a predefined capillary fill design according to claim 9, wherein the thickness of the plastic covering film (6) is in the range of 0.05 mm to 1 mm.

11. The device with a predefined capillary fill design according to claim 9, wherein the plastic covering film (6) is transparent, semi-transparent or opaque with or without color.