Viscous suspension spinning process for producing resorbable ceramic fibers and scaffolds
AssigneeEthicon, Inc.
InventorsVictor F. Janas, Kevor S. TenHuisen
Life of this patent
Estimating the term…
Abstract
The present invention provides a hard tissue scaffold comprising a resorbable ceramic. The scaffold is formed by first creating unfired (green) bioresorbable ceramic fibers via the viscous suspension spinning process (VSSP). Then, using common textile techniques, a structure in which the size and distribution of interconnected pores are controlled, is created. Heat treating the structure to remove the organic phase and sintering the ceramic yields a hard tissue scaffold.
Claims24
A process for making a biocompatible ceramic implant device, comprising the following steps:
- a) solution spinning a biocompatible calcium phosphate powder within an organic phase comprising a biocompatible organic polymer to create an unfired bioresorbable ceramic fiber;
- b) processing the unfired bioresorbable ceramic fiber to form a three-dimensional structure in which size and distribution of interconnected pores are controlled;
- and
- c) heat treating the structure to remove the organic phase and sinter the bioresorbable ceramic fiber, to yield biocompatible, resorbable hard tissue scaffolds comprising ceramic fibers cross-sintered with one another.
A process for making a biocompatible bioresorbable ceramic implant device, formed by the following steps:
- a) using a viscous suspension spinning process to spin a solution containing a biocompatible calcium phosphate powder dispersed in an organic phase containing a suitable organic polymer to create an unfired bioresorbable ceramic fiber;
- b) using common textile techniques to form the bioresorbable unfired ceramic fiber into a three-dimensional structure in which size and distribution of interconnected pores are controlled;
- and
- c) heat treating the structure to remove the organic phase and sinter the bioresorbable ceramic fiber, to yield a biocompatible, resorbable hard tissue scaffold comprising ceramic fibers cross-sintered with one another.
Dependencies are inferred from the claim text.