| 摘要 |
An apparatus for promoting hemostasis of a puncture formed in a blood vessel accessible through an incision tract. The apparatus includes a distal balloon having a contacted position, in which a profile of the distal balloon is sized for insertion through the blood vessel puncture, an expanded position, in which the distal balloon profile prevents passage through the blood vessel puncture. The apparatus also includes a proximal balloon spaced by a predetermined initial distance from the distal balloon and having a contracted position, in which a profile of the proximal balloon is sized for insertion through the incision tract, and an expanded position, in which the proximal balloon profile blocks passage through the blood vessel puncture. The apparatus further includes at least one catheter coupling the distal and proximal balloons to a source of pressurized fluid to selectively actuate the distal and proximal balloons between the contracted and expanded positions. And, the apparatus includes at least one rigid positioner associated with the at least one catheter to facilitate movement of the distal and proximal balloons proximally through the incision tract. The catheter has a flexible wall portion extending proximally of the distal and proximal balloons to facilitate everting of the distal and proximal balloons as the catheter is proximally withdrawn from the incision tract.
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