Non-invasive Blood Sugar Monitor using Mid-infrared Radiation
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Diabetes is the one metabolic
disease that can affect nearly every organ system in the body. It is
estimated that over 15 million individuals in the United States have
diabetes. People with diabetes cannot adequately control their blood sugars
without proper treatment, which may include diet and exercise, various oral
medications, and/or insulin injections. Fortunately with proper treatment,
diabetics can avoid complications such as blindness, kidney failure and
increased risk of cardiovascular disease. With current treatments the
problem is that patients are required to prick their fingers to obtain a
sample of blood to measure their blood glucose.
To address this problem, California-based Oculir is developing a painless
alternative in few years; a monitor that reads blood sugar levels by
inspecting the tiny blood vessels of the eye, without touching the eyeball.
The noninvasive glucose monitor is about the size of a cell phone that
patients simply hold up to their eyes, and it works by bouncing a harmless
beam of infrared light off the membrane (conjuctiva) that surrounds the
white of the eye. Glucose has a strong absorbance of mid-infrared (IR)
radiation. The spectrum of light in the probe is invisible and has the right
wavelength to interact with glucose molecules in blood that flow through
tiny vessels in the thin membrane covering the eye. Here the light reflected
back is proportional to the amount of glucose in the blood. Speaking to
Technical Insights, John Burd, CEO of Oculir Inc., said, "The more glucose
in blood, the less signal at specific wavelengths is reflected back. This
gives a noninvasive measure of blood glucose levels."
The blood glucose monitor is unique because most of the other existing
systems develop noninvasive glucose testing methods that have attempted to
use near-IR radiation on the skin; but the near-IR signal is very weak and
the skin is too complex and variable. In addition to measuring glucose in
people with diabetes, the device, with modifications, can measure a variety
of important medical, military and industrial analytes. The mid-IR region
of the spectrum is called the "fingerprint" region because all biological
molecules have a distinct and different spectrum in this part of the
electromagnetic spectrum.
When asked about the commercialisation of the product, Burd said, "The
company has done a very small number of human studies with its research
instrumentation and the results are found to be encouraging. The company is
now getting ready to run larger human trials and working on the commercial
unit." The commercial version of this device is expected to go on sale in
the year 2009. "The company is still in early development stages, but it has
recently secured generous funding. This is due to the fact that the company
has combined the right amount of vision and practical research and
technology," he said.
The company is planning to replace the current glucose meter and test strip
products in the future. It is open to creative collaborations to speed up
the development or lower the cost of the final product. It has also issued
three patents and few others that are pending. The patent numbers are
US6958039, US6968222 and US6975892.
Details
Dr. John F. Burd, CEO, Oculir
Inc.,
11975 El Camino Real, Suite 100,
San Diego, CA 92130.
Phone: 619-992-2873
Fax: 650-475-5644
E-mail:
jburd@jburd.com
URL:
www.Oculir.com
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