ELECTROLYTE SENSOR USING CONDUCTIVE ELASTOMER

• US 20110198222A1
• Filed: 11/15/2010
• Published: 08/18/2011
• Est. Priority Date: 02/12/2010
• Status: Abandoned Application

• Current Assignee: The Theos Medical Systems
• Original Assignee: The Theos Medical Systems
• Inventors: Davis, Darrell E., Bhatia, Ankush S., Bhatia, Saket S.
• Application Number:
  US12/946,853
• Publication Number:
  US 20110198222A1
• Time in Patent Office: Days
• US Class Current: 204/403.01
• CPC Class Codes: A61F 13/42 with wetness indicator or alarm
• CPC Class Codes: G01N 27/07 Construction of measuring vessels; Electrodes therefor
• CPC Class Codes: G01N 33/493 urine

Abstract

An electrolyte sensor that uses conductive elastomer electrodes. Examples of the intended analytes for sensor use include those found in urine, saliva, blood, feces and spinal fluid, although other analytes exist for electrolyte detection. Conductive elastomer trace electrodes are separated by a gap or channel which can be bridged by an electrolyte and thereby complete an electrical circuit to an alarm or other circuitry. Gap or channel distances vary the level of electrical resistance associated with detecting certain analytes.

Claims

1. An electrolyte sensor for detecting an analyte, the electrolyte sensor comprising one or more positive and negative trace electrodes, the positive and negative trace electrodes including a conductive polymer and arranged in a pattern of proximity with respect to each other throughout a surface of the electrolyte sensor so that the analyte closes an electrical circuit by touching the surface.

2. The electrolyte sensor of claim 1, wherein the one or more positive and negative trace electrodes are connected to respective terminal lead ends, the terminal lead ends being connected to respective positive and negative battery terminals.

3. The electrolyte sensor of claim 1, wherein the polymer is an elastomer.

4. The electrolyte sensor of claim 1, wherein the proximity between the positive and negative trace electrodes is sufficient to prevent establishing of an electric current between the positive and negative trace electrodes.

5. The electrolyte sensor of claim 1, wherein the proximity is formed by one or more gaps or channels of an uneven dimension.

6. The electrolyte sensor of claim 5, wherein the positive and negative trace electrodes form islands throughout the surface, the one or more gaps or channels separating the islands.

7. The electrolyte sensor of claim 5, wherein an electrical resistance is measured across the one or more gaps or channels and the analyte includes one or more of the following:

a solid, a liquid, and a gas.

8. The electrolyte sensor of claim 5, wherein the one or more gaps or channels are of sufficient respective sizes to allow the analyte present in a solid, liquid or gas to conduct electricity between the one or more positive and negative trace electrodes.

9. The electrolyte sensor of claim 1, wherein the one or more positive and negative trace electrodes are separated by one or more bridges.

10. The electrolyte sensor of claim 1, wherein the one or more positive and negative trace electrodes are arranged on a flexible nonconductive base portion, the flexible nonconductive base portion enabling separation of the one or more positive and negative trace electrodes and being of a sufficient rigidity a distance between the positive and negative trace electrodes.

11. The electrolyte sensor of claim 1, wherein the one or more positive and negative trace electrodes are attached to the flexible nonconductive base portion by heat molding and vulcanization or by an adhesive.

12. The electrolyte sensor of claim 1, wherein the flexible nonconductive base portion includes a silicone.

13. The electrolyte sensor of claim 1, wherein the analyte includes one or more of the following:

urine, blood, saliva, spinal fluid, sweat, and feces.