Analytical device for in vivo analysis in the body of a patient

US6584335B1 · kind B1 · utility

Assignee

• Roche Diagnostics GMBH · DE

Inventors

• Hans-Peter Haar · Wiesloch, DE
• Gerhard Werner · Weinheim, DE
• Dirk Boecker · Palo Alto, US
• Armin Lambrecht · Gundelfingen, DE
• Joachim Kastner · Dortmund, DE

Key dates

• Filing date: May 8, 2000
• Grant date: Jun 24, 2003
• Expiry date: May 8, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/241
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Analysis device for determining an analyte in vivo in the body of a patient, having a measuring probe with a hollow needle (18) which can pierce through the skin. Light is passed through the hollow needle (18) and into the body via an optical fiber (22) travelling in the hollow needle (18). The light transported in the optical fiber (22) is modified in the measuring probe (3), the modification being characteristic of the presence of the analyte. A measurement and evaluation unit (4) measures the change to extract information concerning the presence of the analyte in the body. The hollow needle (18) is permeable, at least in a partial section of its length, serving as a measuring section (30) which can be inserted into the skin so that interstitial liquid may penetrate through the hollow needle wall to a measuring section of the optical fiber extending in the hollow needle (18) and the modification of the light characteristic of the presence of the analyte is effected through interaction with the interstitial liquid in the measuring section.