The hemocompatibility of medical grade silicone elastomer and the influence of surface roughness and chemistry were evaluated with a newly developed dynamical blood incubation system. In order to improve the hemocompatibility of silicone elastomers, a functionalized polyethylene glycol was used as an additive, and the resultant material showed improved hemocompatibility, long-term stability, non-cytotoxicity, sterilizability, processability by extrusion, and sufficient mechanical properties for the use as catheter. Finally, a port/catheter-system was fabricated serving as an example of application.
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The hemocompatibility of medical grade silicone elastomer and the influence of surface roughness and chemistry were evaluated with a newly developed dynamical blood incubation system. In order to improve the hemocompatibility of silicone elastomers, a functionalized polyethylene glycol was used as an additive, and the resultant material showed improved hemocompatibility, long-term stability, non-cytotoxicity, sterilizability, processability by extrusion, and sufficient mechanical properties for...
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