Radiopaque poly(e-caprolactone) as additive for X-ray imaging of temporary implantable medical devices

Rémi Samuel (1) , Edouard Girard (2, 3, 4) , Grégory Chagnon (4) , Stéphane Dejean (1) , Denis Favier (4) , Jean Coudane (1) , Benjamin Nottelet (1)

1 IBMM - Institut des Biomolécules Max Mousseron [Pôle Chimie Balard]
2 UGA [2016-2019] - Université Grenoble Alpes [2016-2019]
3 CHUGA - Centre Hospitalier Universitaire [CHU Grenoble]
4 TIMC-IMAG-BioMMat - Ingénierie Biomédicale et Mécanique des Matériaux

Implantable polymeric medical devices suffer from a lack of visibility under current clinical imaging techniques. To circumvent this problem, poly(3-caprolactone-co-a-triiodobenzoate-3-caprolactone)s (PCL-TIB) containing from 3.5% to 24% of triiodobenzoate-3-caprolactone units were synthesized as new X-ray macromolecular contrast agents. Physico-chemical and thermal properties of PCL-TIBs were evaluated by 1H NMR, SEC, DSC and TGA. Their potential as radio-opacifying additive for medical devices was evaluated by preparing polymeric blends of PCL-TIB with various (co)polyesters. At first, in vitro X-ray visibility of PCL/PCL-TIB blends was evaluated. A more in depth characterization was then carried out based on PCL/PLA50-PEG-PLA50 blends. The impact of PCL-TIB content on the mechanical properties of blends was evaluated by tensile tests. Stability of X-ray visibility was evaluated by ex vivo implantation of non-degraded blends and of blends degraded for 6 weeks in vitro. Finally, cytocompatibility was assessed by evaluating the proliferation of L929 fibroblasts on the blends.

Domaines: Matériaux

Rémi Samuel, Edouard Girard, Grégory Chagnon, Stéphane Dejean, Denis Favier, et al.. Radiopaque poly(e-caprolactone) as additive for X-ray imaging of temporary implantable medical devices. RSC Advances, 2015, 5, pp.84125-84133. ⟨10.1039/c5ra19488a⟩. ⟨hal-01369275⟩