Abstract: A stent graft having a tubular stent frame including a plurality of connected struts that form a wall extending along a longitudinal axis from a first end to a second end is described. The stent frame may have a substantially uniform expanded diameter from the first end to the second end, a first expanded polytetrafluoroethylene (ePTFE) covering positioned over an abluminal surface of the tubular stent frame, and a second ePTFE covering positioned over a luminal surface of the tubular stent frame. The second ePTFE covering may be joined to the first ePTFE covering through the tubular stent frame wall at the expanded diameter to form an encapsulated stent. The encapsulated stent may have a reduced diameter section at a first end of the encapsulated stent that is less than the expanded diameter.

Abstract: Stent, stent coverings, and methods of making medical devices useful in vascular valves are disclosed. Stent coverings include layered, oriented, or calendered polymer films.

Abstract: An end-to-end virtual private networking system transports network packets securely through a public data network. A mobile device comprises an application client and a wireless roaming client managing data transfer from the mobile device to the public data network via one of a plurality of predetermined wireless links. A roaming gateway is located in a data center and is coupled to the public data network for tracking the plurality of predetermined wireless links and for managing data transfer from the public data network to the mobile device via one of the plurality of predetermined wireless links. An enterprise server is provided in a private enterprise for exchanging network packets with the application client in the mobile device. A CPE-VPN router in the private enterprise network is coupled to the enterprise server and to the public data network.

Abstract: An end-to-end virtual private networking system transports network packets securely through a public data network. A mobile device comprises an application client and a wireless roaming client managing data transfer from the mobile device to the public data network via one of a plurality of predetermined wireless links. A roaming gateway is located in a data center and is coupled to the public data network for tracking the plurality of predetermined wireless links and for managing data transfer from the public data network to the mobile device via one of the plurality of predetermined wireless links. An enterprise server is provided in a private enterprise for exchanging network packets with the application client in the mobile device. A CPE-VPN router in the private enterprise network is coupled to the enterprise server and to the public data network.