absorbable polyester fibers , braids , and surgical meshes with prolonged strength retention have been developed . these devices are preferably derived from biocompatible copolymers or nomopolymers of 4 - hydroxybutyrate . these devices provide a wider range of in vivo strength retention properties than are currently available , and could offer additional benefits such as anti - adhesion properties , reduced risks of infection or other post - operative problems resulting from absorption and eventual elimination of the device , and competitive cost . the devices may also be particularly suitable for use in pediatric populations where their absorption should not hinder growth , and provide in all patient populations wound healing with long - term mechanical stability . the devices may additionally he combined with autologous , allogenic and / or xenogenic tissues to provide implants with improved mechanical , biological and handling properties .