Method of making an electrochemical sensor

• US 20070023287A1
• Filed: 04/27/2006
• Published: 02/01/2007
• Est. Priority Date: 06/11/2001
• Status: Abandoned Application

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Wogoman, Frank
• Application Number:
  US11/412,301
• Publication Number:
  US 20070023287A1
• Time in Patent Office: Days
• US Class Current: 204/409
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52

Abstract

An electrochemical sensor with a capillary channel is formed by placing a sacrificial insert on a sensor base and applying casting material. After a casting material is cured, the sacrificial is removed leaving a capillary channel in the sensor. The insert may be removed by a tool including a clamp for clamping and holding the insert stationary and a sliding block to which the sensor is secured.

Claims

1. A method of making a capillary channel in an electrochemical biosensor, the method comprising the acts of:

forming a base member including an active area with at least one electrode;

placing a sacrificial insert on said base member;

applying casting material over said sacrificial insert and on said base member; and

mechanically removing said sacrificial insert leaving a capillary channel in said casting material.

2. The method of claim 1 comprising providing a reagent in said active area.

3. The method of claim 1 wherein the at least one electrode is a plurality of electrodes and wherein the plurality of electrodes is in said capillary channel.

4. The method of claim 1 comprising curing said casting material prior to removing said sacrificial insert.

8. The method of claim 1 wherein said capillary channel has a height of about 0.005 inch.

9. The method of claim 1 further including screen-printing said active area.

5. (canceled)

6. (canceled)

7. (canceled)