Monitoring method and/or apparatus

US7415299B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Stefan Zimmermann · Laufenbürg, DE
• Boris Stoeber · Berkeley, US
• Dorian Liepmann · Lafayette, US
• Albert P. Pisano · Livermore, US

Key dates

• Filing date: Apr 19, 2004
• Grant date: Aug 19, 2008
• Expiry date: Apr 15, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/028
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method and apparatus for substance monitoring. One application is an easy to handle continuous glucose monitor using a group of hollow out-of-plane silicon microneedles to sample substances in interstitial fluid from the epidermal skin layer. The glucose of the interstitial fluid permeates a dialysis membrane and reaches a sensor. Using MEMS technology, for example, allows well-established batch fabrication at low cost.