Document Type
Patent
Publication Date
8-18-1998
Patent Number
patent number 5795922
Abstract
A radiopaque bone cement used to repair bone or other hard tissues is provided. The bone cement is made from combining a composition containing an acrylic powder and a radiopacifier with a corresponding liquid monomer. Prior to being added to the composition, the radiopacifier is microencapsulated with a bone cement compatible material. When combined with the liquid monomer, the bone cement compatible material dissolves releasing the radiopacifier particles into a bone cement matrix. By being microencapsulated, the radiopacifier is prevented from agglomerating in the cement. Instead, the radiopacifier particles become dispersed throughout the bone cement matrix which not only creates a radiopaque cement but also increases the fatigue life of the cement.
Application Number
08/467361
Assignees
Clemson University (Clemson, SC)
Filing Date
1995-06-06
Primary/U.S. Class
523/117
Other/U.S. Class
424/419, 428/402.24, 523/116, 524/423, 524/430, 524/534, 524/560