Synthesis of sodium potassium niobate by sol-gel

US8246929B2 · kind B2 · utility

Assignee

• ST. JUDE MEDICAL AB · SE

Inventors

• Tom Eriksson · Sandviken, SE
• Kenth Nilsson · Åkersberga, SE
• Anna-Karin Johansson · Vallentuna, SE
• Karin Ljungström · Nordstraße, SE
• Koroush Lashgari · Sundbyberg, SE
• Annika Pohl · Tyresö, SE
• Gunnar Westin · Stockholm, SE

Key dates

• Filing date: May 31, 2005
• Grant date: Aug 21, 2012
• Expiry date: Oct 23, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/80
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for producing a biocompatible material of the formula NaxKyNbO3, 0≦x≦0.8, 0.2≦y≦1, x+y=1 includes the steps of a) providing a Na-precursor and a K-precursor for NaxKyNbO3, b) mixing the precursors in solution wherein said precursors first react to form a sol and thereafter a gel, c) heat treating the gel to obtain an oxide of the material NaxKyNbO3, 0≦x≦0.8, 0.2≦y≦1, x+y=1. The material can be produced as a film, and the material or film can be provided on the exterior surface of a medical implant that will come into contact with body tissue and/or body fluids upon implantation thereof.