Method and Device for Express Analysis of Acetone Traces in Gases

• US 20150013429A1
• Filed: 09/29/2014
• Published: 01/15/2015
• Est. Priority Date: 05/23/2008
• Status: Abandoned Application

• Current Assignee: Positiveid Corporation
• Original Assignee: Positiveid Corporation
• Inventors: Atkin, Benjamin, Goldshtein, Vadim
• Application Number:
  US14/499,420
• Publication Number:
  US 20150013429A1
• Time in Patent Office: Days
• US Class Current: 73/23.3
• CPC Class Codes: G01N 2021/0162 using microprocessors for control of a sequence of operations, e.g. test, powering, switching, processing
• CPC Class Codes: G01N 2021/0193 the sample being taken from a stream or flow to the measurement cell
• CPC Class Codes: G01N 21/01 Arrangements or apparatus for facilitating the optical investigation
• CPC Class Codes: G01N 21/59 Transmissivity G01N21/25 takes precedence
• CPC Class Codes: G01N 21/78 producing a change of colour
• CPC Class Codes: G01N 2201/0221 Portable; cableless; compact; hand-held
• CPC Class Codes: G01N 2201/062 LED's
• CPC Class Codes: G01N 33/49 Blood chemical methods for determining blood cell populations G01N33/5094; chemical analysis of blood groups or blood types G01N33/80
• CPC Class Codes: G01N 33/497 of gaseous biological material, e.g. breath
• CPC Class Codes: G01N 33/66 involving blood sugars, e.g. galactose

Abstract

A device apparatus for measuring acetone levels exhaled air in order to determine the content of glucose in the blood is provided. The device includes a chemical sensor cell having a vertically oriented hollow truncated cone with one end having a first diameter and an opposite end having a second diameter that is larger than the first diameter and also a solution housed within the chemical sensor cell.

Claims

1. A device for measuring the concentration of acetone in exhaled air in order to determine the content of glucose in the blood, comprising:

a chemical sensor cell comprising a vertically oriented hollow truncated cone with one end having a first diameter and an opposite end having a second diameter that is larger than the first diameter; and

,

a solution housed within the chemical sensor cell.

2. The device of claim 1, wherein the chemical sensor cell further comprises an outlet positioned proximal to the one end of the chemical sensor cell having the first diameter and an inlet positioned proximal to the opposite end of the chemical sensor cell having the second diameter.

3. The device of claim 1, wherein the chemical sensor cell is made of transparent plastic.

4. The device of claim 2, wherein the outlet of the chemical sensor cell is coupled to a valve.

5. The device of claim 1, wherein the solution contains a solute selected from the group consisting of Sodium Iodate, Sodium Nitroprusside, Metadiamine, Phenyl-hydrazone, Furfural, o-Nitrobenzaldehyde, and combinations thereof.

6. The device of claim 2, further comprising:

a dosator coupled to the inlet of the chemical sensor cell;

a light emitter coupled to the chemical sensor cell;

an optical sensor coupled to the chemical sensor cell; and

,

a microprocessor coupled to the optical sensor.

7. The device of claim 6, wherein the dosator is coupled to an actuator.

8. The device of claim 7, wherein the actuator is coupled to a valve.

9. The device of claim 6, further comprises a numerical value output computed by the microprocessor, the number value output correlates the difference in optical absorbance of an unreacted solution with a solution reacted with acetone from exhaled air to produce an output congruous with blood glucose concentration.

10. The device of claim 9, wherein the numerical value output is displayed on a screen.