A Wireless Implantable Microsystem for
Continuous Blood Glucose Monitoring
• Currently 200M diabetic people around the world
(~ 21M in U.S. in 2002).
 Expectation for 2030: 370M
• Contribution to the death of millions of people.
 225,000 people in U.S. in 2002.
• Monetary cost to the society: billions of dollars.
 $130 billion in U.S. in 2002.
Continuous blood glucose monitoring can help to
significantly (40 to 75%) reduce the symptoms of
diabetes.
Problems of the Previous Works
• Using the conventional glucose biosensors.
 Requirement for oxygen;
 Degradation of the sensor due to the production of
hydrogen peroxide (short life-time);
 Interference from other chemical species.
• Using battery for powering the implant
 Short life-time;
 Hazard of leakage.
• Large Size
 Instability of the sensing environment;
 Difficulties in packaging.
A New Wireless Implantable Microsystem
• A new electrochemical glucose sensor.
• Passive telemetry for data and power transfer between the
implant and the external reader.
• Small size (481 mm3).