Method and apparatus for promoting hemostasis of a blood vessel puncture
An apparatus for promoting hemostasis of a puncture formed in a blood vessel accessible through an incision tract and methods of use thereof. The apparatus includes distal and proximal balloons each having a contracted position and an expanded position, the proximal balloon spaced by a predetermined initial distance from the distal balloon. 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.
1. A method of promoting hemostasis of a puncture in a blood vessel accessible through an introducer sheath inserted in an incision tract, the method comprising:
positioning distal and proximal balloons in the incision tract by advancing the distal and proximal balloons through the introducer sheath until the distal balloon is disposed within the blood vessel and the proximal balloon is disposed outside of the blood vessel;
inflating the distal and proximal balloons;
pulling the distal and proximal balloons in a proximal direction until the distal balloon engages an inner wall of the blood vessel;
everting the distal balloon until it is withdrawn from the blood vessel;
holding the proximal balloon in place for a period of time sufficient to at least initiate formation of thrombus;
everting the proximal balloon; and
withdrawing the distal and proximal balloons from the incision tract.
2. The method of claim 1 , in which the introducer sheath is withdrawn after positioning the distal and proximal balloons.
3. The method of claim 1 , in which the distal balloon is coupled to a first catheter having an outer wall and the proximal balloon is coupled to a second catheter having inner and outer walls, wherein the first catheter outer wall passes through the second catheter inner wall.
4. The method of claim 3 , in which the first catheter outer wall is flexible so that the distal balloon is everted by applying a proximal force to a center of the distal balloon.
5. The method of claim 3 , in which the second catheter outer wall is flexible so that the proximal balloon is everted by applying a proximal force to the second catheter inner wall.
6. The method of claim 1 , in which the distal and proximal balloons comprise distal and proximal balloon segments coupled to a single catheter.
7. The method of claim 1 , in which the distal balloon is at least partially deflated prior to everting.
8. The method of claim 1 , further comprising insetting the distal and proximal balloons into a positioning sheath prior to positioning in the incision tract.