Patent ID: 8177829
Filing Date: 2012-05-15
Classification: A61F,A61M

Abstract:
1. A balloon catheter comprising: a catheter shaft having an internal catheter lumen; a primary balloon; a side branch shaft having an internal branch lumen; a stent comprising a side branch assembly comprising a first petal and a second petal; the first petal located across the side branch assembly from the second petal, said first petal arranged to unfold at a first location, said second petal arranged to unfold at a second location, a predetermined distance extending between said first location and said second location; and a secondary balloon arranged to unfold said first and second petals, the secondary balloon comprising: wherein the secondary balloon comprises a substantially cylindrical shape at a first inflation pressure, and the second portion assumes a shape having an outwardly extending portion that overhangs the first portion at a second, higher inflation pressure.