System and method for measuring blood glucose in the human body without a drawn blood sample

• US 9,078,606 B1
• Filed: 08/05/2011
• Issued: 07/14/2015
• Est. Priority Date: 03/15/2011
• Status: Expired due to Fees

• Current Assignee: Sarijit S. Bharj
• Original Assignee: Sarijit S. Bharj
• Inventors: Bharj, Sarijit S.
• Primary Examiner(s): Kahelin, Michael
• Assistant Examiner(s): Alter, Mitchell E
• Application Number:
  US13/204,625
• Time in Patent Office: 1,439 Days
• Field of Search: 600300-365
• US Class Current: 1/1
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters

Abstract

A system and method for measuring glucose levels in a user'"'"'s blood without having to draw a blood sample. A wave energy source emits wave energy. A resonance chamber is provided that receives the wave energy and produces a frequency oscillation. An opening leads into the resonance chamber that is small yet enables a significant amount of sample tissue to bulge through the opening. The sample tissue of the user is pressed against the opening. At least a portion of the sample tissue passes through the opening and into the resonance chamber. The sample tissue loads the resonance chamber and alters the frequency oscillation created by the resonance chamber. At least some of the altered frequency oscillation is indicative of blood glucose levels within the sample tissue.

Claims

1. A method of measuring glucose levels in a user'"'"'s blood, comprising the steps of:

providing a wave energy source that emits wave energy;

providing a resonance chamber having an interior that receives said wave energy, therein producing a frequency oscillation;

providing a test surface on said resonance chamber having an unobstructed opening extending therethrough that leads into said interior, wherein said opening has a first area;

placing body tissue against said test surface over opening, wherein at least a portion of said body tissue protrudes through said opening and into said resonance chamber, wherein said portion creates an altered frequency oscillation in said resonance chamber;

providing circuitry that converts said altered frequency oscillation into a display signal, wherein said display signal is indicative of blood glucose levels within said body tissue; and

providing a display;

displaying said display signal on said display.

2. The method according to claim 1, wherein said step of providing a wave energy source that emits wave energy includes providing a wave energy source that emits wave energy in bands selected from a group consisting of Instrument, Scientific and Medical (ISM) bands, microwave bands and extremely high frequency (EHF) bands.

3. The method according to claim 1, further including the step of embodying said wave energy source, said resonance chamber, said circuitry and said display in a portable handheld device.

4. The method according to claim 1, wherein said first area of said opening in said test surface is between 0.5 square centimeters and 2 square centimeters.

5. The method according to claim 1, wherein said step of providing a wave energy source includes providing a high Q microwave source.

6. A method of measuring glucose levels in a user'"'"'s blood, comprising the steps of:

providing an emission source that emits wave energy;

providing a resonance chamber having an interior that receives said wave energy, therein causing a oscillating frequency within said resonance chamber;

providing a test surface on said resonance chamber having an unobstructed opening extending therethrough that leads into said interior, wherein said opening has a first area;

placing a tissue sample of the user against said test surface over said opening, wherein a portion of said tissue sample protrudes into said opening and into said resonance chamber, wherein said portion loads said resonance chamber therein creating a changed oscillating frequency within said resonance chamber that is indicative of blood glucose levels within said portion of said tissue sample;

providing circuitry that converts said changed oscillating frequency into a display signal indicative of blood glucose level in said body tissue; and

providing a display; and

displaying said display signal on said display.

7. The method according to claim 6, further including the step of embodying said microwave source, said resonance chamber, said circuitry and said display in a portable handheld device.

8. The method according to claim 6, wherein said first area of said opening in said test surface is between 0.5 square centimeters and 2 square centimeters.

9. A non-invasive method for measuring blood glucose levels through a sample of body tissue, said method comprising the steps of:

providing a resonance chamber that has an oscillating frequency in response to an energy wave input;

providing a test surface on said resonance chamber having an unobstructed opening extending therethrough that leads into said resonance chamber, wherein said opening has a first area;

placing the body tissue over said opening, wherein a portion of said body tissue protrudes into said opening and into said resonance chamber, therein creating a changed oscillating frequency that is indicative of blood glucose levels within said portion of said body tissue;

providing a circuit that converts said changed oscillating frequency into a blood glucose reading; and

displaying said blood glucose reading on a display.

10. The method according to claim 9, further including the step of embodying said resonance chamber and said circuit in a portable handheld device.

11. The method according to claim 9, wherein said first area of said opening is between 0.5 square centimeters and 2 square centimeters.

12. The method according to claim 9, wherein said energy wave input has a band selected from a group consisting of Instrument, Scientific and Medical (ISM) bands, microwave bands and extremely high frequency (EHF) bands.

13. The method according to claim 9, wherein said circuit converts said changed oscillating frequency into a voltage indicative of said blood glucose reading utilize loop circuit selected from a group consisting of a digital phase locked loop, an analog phase locked loop and frequency discriminator circuit.

15. The apparatus according to claim 13, wherein said opening on said test surface has an area between 0.5 square centimeters and 2 square centimeters.

14. The blood glucose apparatus for testing blood glucose levels in a tissue sample without drawing blood from said tissue sample, said apparatus comprising:

a wave energy source that emits wave energy;

a resonance chamber having an interior that receives said wave energy, therein producing a frequency oscillation, wherein a test surface is present on said resonance chamber;

an unobstructed opening formed through said test surface that leads into said interior of said resonance chamber has an opening leading to said interior, and wherein said frequency oscillation changes when said tissue sample bulges into said opening to produce a varied frequency oscillation;

circuitry that converts said varied frequency oscillation into a display signal wherein display signal is indicative of blood glucose levels within said body tissue; and

a display for displaying said display signal.