[EN] COMPOSITIONS AND METHODS FOR THE INHIBITION OF BONE GROWTH AND RESORPTION<br/>[FR] COMPOSITIONS ET PROCEDES D'INHIBITION DE CROISSANCE ET DE RESORPTION OSSEUSE
申请人:POLYMERIX CORP
公开号:WO2005039489A3
公开(公告)日:2005-06-09
Effect of Linker Structure on Salicylic Acid-Derived Poly(anhydride−esters)
作者:Almudena Prudencio、Robert C. Schmeltzer、Kathryn E. Uhrich
DOI:10.1021/ma048051u
日期:2005.8.1
A series of salicylic acid-derived poly(anhydride -esters) were synthesized by melt polymerization methods, in which the structures of the molecule ("linker") linking together the two salicylic acids were varied. To determine the relationship between the linker and the physical properties of the corresponding poly(anhydride-ester), several linkers were evaluated including linear aliphatic, aromatic, and aliphatic branched structures. For the linear aliphatic linkers, higher molecular weights were obtained with longer linear alkyl chains. The most sterically hindered linkers yielded lower molecular weight polymers. The thermal decomposition temperature increased with the alkyl chain length, but the glass transition temperature decreased, due to the enhanced flexibility of the polymer. The highest glass transition temperatures were obtained by using aromatic linkers as a result of inereased pi-pi interactions. Water contact angles determined the relative hydrophobicity of the polymers, which correlated to hydrolytic degradation rates; i.e., the highest contact angle values yielded the slowest degrading polymers.
Biodegradable polymers for use with implantable medical devices
申请人:Hossainy F.A. Syed
公开号:US20050232971A1
公开(公告)日:2005-10-20
The present invention relates to a stent fabricated of or coated with a composition comprising a biodegradable hydrophobic polymer containing water-labile bonds such that a device fabricated of the composition or the surface of a device coated with the requisite mechanical characteristics required of a stent and the polymer erodes from its outer surface inward.
THERAPEUTIC DEVICES FOR PATTERNED CELL GROWTH
申请人:Uhrich Kathryn E.
公开号:US20100291181A1
公开(公告)日:2010-11-18
The invention provides therapeutic devices comprising a polymeric anti-inflammatory agent that biodegrades to release anti-inflammatory agents. The therapeutic devices are useful for repair and regeneration of a variety of injured tissues.