Implantable medical sensor system

Patent · Mon Jan 01 00:00:00 EST 2001

OSTI ID:873608

Darrow, Christopher B ^[1]; Lane, Stephen M ^[2]; Lee, Abraham P ^[3]; Wang, Amy W ^[4]

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1. Pleasanton, CA
2. Oakland, CA
3. Walnut Creek, CA
4. Berkeley, CA

An implantable chemical sensor system for medical applications is described which permits selective recognition of an analyte using an expandable biocompatible sensor, such as a polymer, that undergoes a dimensional change in the presence of the analyte. The expandable polymer is incorporated into an electronic circuit component that changes its properties (e.g., frequency) when the polymer changes dimension. As the circuit changes its characteristics, an external interrogator transmits a signal transdermally to the transducer, and the concentration of the analyte is determined from the measured changes in the circuit. This invention may be used for minimally invasive monitoring of blood glucose levels in diabetic patients.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 6201980
• OSTI ID: 873608
• Country of Publication: United States
• Language: English

Related Subjects

implantable
medical
sensor
chemical
applications
described
permits
selective
recognition
analyte
expandable
biocompatible
polymer
undergoes
dimensional
change
presence
incorporated
electronic
circuit
component
changes
properties
frequency
dimension
characteristics
external
interrogator
transmits
signal
transdermally
transducer
concentration
determined
measured
minimally
invasive
monitoring
blood
glucose
levels
diabetic
patients
blood glucose
circuit component
chemical sensor
electronic circuit
medical applications
permits selective
minimally invasive
dimensional change
medical sensor
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