Contrast medium for near infrared diagnosis

US6319488A · kind A · utility

Assignee

• Institut fur Diagnostikforschung GmbH an der Freien Universitat Berlin · DE

Inventors

• Kai Licha · Berlin, DE
• Bjorn Riefke · Berlin, DE
• Werner Weitschiess · Berlin, DE
• Dieter Heldmann · Munich, DE
• Violetta Sudmann · Berlin, DE

Key dates

• Filing date: Apr 9, 1998
• Grant date: Nov 20, 2001
• Expiry date: Apr 9, 2018

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K49/0078
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

This invention relates to colloidal systems charged with polymethine dyes and having suitable photophysical and pharmacological properties, their use as a contrast medium in fluorescence and transillumination diagnostics in the near infrared spectral range, as well as methods for their production.