Animal experiments with a new dura graft (Polytetrafluorethylene) - results

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Abstract
A comparative animal experiment study on rabbits was performed to test a synthetic dura (expanded polytetrafluorethylene = ePTFE = Gore-Tex Surgical Membrane). For the purpose of comparison with the ePTFE implanted in the left hemisphere, lyophilized natural dura (Lyodura) was used and removed from the subjects after two, eight and twelve weeks. There were no rejection reactions. The lyophilized dura showed pronounced environmental reaction, with cellular permeation and indications of revitalization. The ePTFE manifested only slight reaction and remained inert in an enclosing sheath of connective tissue. The biocompatibility and other properties, such as simple handling and resteriliziability, of ePTFE can thus be assessed as positive.

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