Method for transmitting acoustic waves

US6726904B2 · kind B2 · utility

Assignees

• RICHARD WOLF GMBH · DE
• TachnoGel GmbH & Co. KG · DE

Inventors

• Werner Krauss · Hamburg, DE
• Peter Jaggy · Rain, DE
• Edgar Bauer · Gondelsheim, DE
• Hermann Benkhoff · Duderstadt, DE

Key dates

• Filing date: Oct 9, 2001
• Grant date: Apr 27, 2004
• Expiry date: Oct 9, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K41/0033
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to the use of a gel mass based on reaction products of polyols and polyisocyanates, wherein the polyol component consists of one or more polyols with hydroxyl numbers below 112 and where appropriate other polyols and additives known from polyol chemistry, the isocyanate number of the reaction mixture lies in the range of 15 to 59.81 and the product of the isocyanate functionality and the functionality of the polyol components is at least 6.15, as a coupling medium for transmitting acoustic waves from a sound source onto the body of the patient.