Patent ID: 8585748

Claim:
A medical device delivery system, comprising: an inner catheter comprising a first port opening to an exterior of said inner catheter, said first port being in fluid communication with a proximal end of said inner catheter; a first seal attached to an exterior surface of said inner catheter, said first seal being disposed proximally from said first port; a second seal attached to said exterior surface of said inner catheter, said second seal being disposed distally from said first port; a self-expanding medical device in a collapsed configuration mounted around said inner catheter, said first and second seals contacting an inner surface of said medical device and thereby sealing said medical device to said inner catheter, said self-expanding medical device comprising a graft layer extending between said first and second seals and fully covering said medical device between said first and second seals, a first open space being disposed between said inner surface of said medical device and said exterior surface of said inner catheter between said first and second seals; and wherein said first and second seals maintain a vacuum applied by said first port within said first open space, said medical device being retained in a collapsed configuration and collapsing at least partially into said first open space in response to said vacuum.