| 主权项 |
1. An implantable device for regulating blood flow through a blood vessel, comprising:
a) an elongated support dimensioned and configured to be implanted in a blood vessel, the support including axially spaced apart first and second substantially annular support portions and a first linking member linking the axially spaced apart portions to one another; and b) a valve membrane extending between the axially spaced apart support portions and having an upper portion, a lower portion and an intermediate portion, the valve membrane including a first region and a second lower region, the first region folded over the first linking member for attachment and the second region being adjacent the first region and unattached to the first linking member, the second region movable between a first position to enable blood flow and a second position to inhibit blood flow. |
