Electrochemical sensors paste

• US 5,616,222 A
• Filed: 09/15/1995
• Issued: 04/01/1997
• Est. Priority Date: 06/27/1994
• Status: Expired due to Term

• Current Assignee: Siemens Healthcare Diagnostics Incorporated (Siemens AG)
• Original Assignee: Chiron Diagnostics Corp (Bayer AG)
• Inventors: Edelman, Peter G., Zalenski, John A., D'Orazio, Paul A., Maley, Thomas C.
• Primary Examiner(s): Bell, Bruce F.
• Application Number:
  US08/508,271
• Time in Patent Office: 564 Days
• Field of Search: 204/403, 204/153.12, 204/418, 204/291, 204/294, 204/292, 435/288, 435/291, 435/817, 106/124, 106/125, 252/503, 252/514
• US Class Current: 204/294
• CPC Class Codes: C12Q 1/001 Enzyme electrodes
• CPC Class Codes: C12Q 1/006 for glucose
• CPC Class Codes: Y10S 435/817 Enzyme or microbe electrode
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing
• CPC Class Codes: Y10T 29/49204 Contact or terminal manufacturing
• CPC Class Codes: Y10T 29/53261 Means to align and advance work part
• CPC Class Codes: Y10T 29/53265 with work-holder for assembly

Abstract

A solid state, multi-use electrochemical sensor having an electrically nonconductive substrate, a working electrode, and a semi-permeable membrane covering the working electrode. The working electrode includes an electrically conductive material adhered to a portion of the substrate. A first portion of the conductive material is covered with an electrically insulating dielectric coating, and a second portion of the conductive material is covered with an active layer. The active layer includes a catalytically active quantity of an enzyme carried by platinized carbon powder particles, which are distributed throughout the active layer. A sensor package for incorporating a sensor is provided.

Claims

1. A paste for an electrochemical electrode comprising,

(a) platinized carbon particles;

(b) albumin;

(c) binder resin; and

(d) an enzyme.

3. A paste in accordance with claim 1, wherein said binder resin is hydrophobic.

2. A paste for an electrochemical electrode comprising,

(a) platinized carbon particles;

(b) inactive protein;

(c) binder resin;

(d) an enzyme; and

,

(e) surfactant.