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Abstract
Grant Number: 1R43DK064487-01 PI Name: LUCISANO, JOSEPH Y. PI Email: joelucisano@glysens.com PI Title: Project Title: Signal Processing for Tissue Glucose Sensor Abstract: DESCRIPTION (provided by applicant): A continuous, implanted glucose sensor for diabetics would provide warnings of hypoglycemia and information for improved insulin replacement either by conventional injection, mechanical insulin pumps, or other means. We have already developed a sensor that shows promise. The sensor employs immobilized glucose oxidase coupled to a potentiostatic oxygen electrode. We have employed one version of the sensor as a central venous implant in dogs for over 100 days without the need for recalibration, and similar results from intravascular application in humans with another version have been reported by other groups. These successes were achieved by combinations of novel sensor design and the use of inherently stable enzymes. However, application in tissues, which is expected to be safer and more desirable, requires the development of new signal processing techniques. The goal for this Phase I study is to develop novel signal processing algorithms suitable for sensors implanted in a complex tissue environment. In Phase I, we will utilize data we have previously obtained from our devices implanted in animal models to develop the necessary algorithms. In Phase II, the signal processing algorithms will be applied prospectively in extensive, new animal implant evaluations. This work represents significant innovation over previous work and is a crucial step toward implementation of a long-term implantable tissue-based glucose sensor.
Thesaurus Terms:
biological signal transduction, biomedical equipment development, biosensor, clinical biomedical equipment, diagnosis design /evaluation, diagnosis quality /standard, implant
biomedical automation, diabetes mellitus therapy, hyperglycemia, hypoglycemia, intravenous administration
bioengineering /biomedical engineering, biotechnology, electrode, mathematical model, medical implant science
Institution: GLYSENS, INC. 6450 LUSK BLVD, STE E-109 SAN DIEGO, CA 92121 Fiscal Year: 2003 Department: Project Start: 15-JUL-2003 Project End: 30-JUN-2004 ICD: NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES IRG: ZRG1