Bioweb\u2122 PTFE\/PU composite membranes provide an efficient adhesion platform for stents and scaffolds, enabling low-profile encapsulation over nitinol frames without sutures at a much lower temperature (266 \u00b0F \/ 130 \u00b0C) than traditional ePTFE coverings (572 \u00b0F \/ 300 \u00b0C). In addition to lower temperature bonding than ePTFE, Bioweb\u2122\u2019s PU layer combined with the PTFE layer provides isotropic mechanical properties, allowing Bioweb\u2122 to encapsulate a wider variety of frames and unique geometries.<\/p>\n
As an electrospun product, Bioweb\u2122 possesses excellent isotropic mechanical properties. The electrospinning process produces a composite matrix with microporous qualities similar to that of ePTFE. However, the pores seen in the outer layer of PTFE in Bioweb\u2122 are typically larger (3-5 \u03bcm) before sealing, resulting in potentially improved endothelialization when compared to pure ePTFE coverings.<\/p>\n