Lattice

The invention relates to medical devices and methods of using them. The devices are prostheses that can be delivered percutaneously with (or on) an endovascular catheter or by other surgical or other techniques and then expanded. The prostheses are configured to have a stretch- and slip-resistant network, which is defined by a plurality of openings. The prosthesis may also optionally have a stent disposed proximal to the network. In exemplary embodiments, the fluoropolymer is expanded polytetrafluoroethylene. The composite materials exhibit high elongation while substantially retaining the strength properties of the fluoropolymer membrane. In at least one embodiment, the network is made of a composite material that includes at least one fluoropolymer membrane that includes serpentine fibrils and an elastomer. A network is also provided that includes a generally tubular member formed from a composite material that includes at least one fluoropolymer membrane containing serpentine fibrils and an elastomer. (Automatic translation with Google Translate, no legal value)