Abstract
The purpose of this study is to advance an alternative design of knitted vascular grafts in order to achieve low bleeding porosity at implantation without the expense of high healing porosity for full-wall healing. The design is based on the utilization of both biodegradable (polyglycolic acid) and nonbiodegradable (Dacron) synthetic fibers blended at various composition ratios. The fabric construction is of single jersey weft knitted tubular structure. The experimental part of this study included the fabrication of the knitted specimens at various composition ratios of PGA to Dacron fibers, characterization of the knitted specimens, and in the in vitro physical, mechanical and morphological testing of the specimens after various periods of immersion in phosphate buffer of pH 7.4. The overall properties of these bicomponent fabrics were determined by the relative magnitudes of the two opposite factors: the absorption of PGA component and the inherent relaxation shrinkage of the weft knitted fabrics. The most important observation of the study was the achievement of increasing water porosity with the duration of immersion without the significant expenses of structural integrity and strength of the specimens. This unique property has not been found in commercial vascular graft fabrics of similar construction.
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© 1987 Plenum Press, New York
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Chu, C.C., Lecaroz, L.E. (1987). Design and in Vitro Testing of Newly Made Bicomponent Knitted Fabrics for Vascular Surgery. In: Gebelein, C.G. (eds) Advances in Biomedical Polymers. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1829-3_19
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DOI: https://doi.org/10.1007/978-1-4613-1829-3_19
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