Patent ID: 9364356
Filing Date: 2016-06-14
CPC Classification: A61F,A61M

Claim Text:
1. A method of treating a bifurcated vessel, said method comprising: providing a first delivery catheter and a second delivery catheter, wherein the first delivery catheter comprises a first elongate shaft, a first expandable member, an auxiliary expandable member disposed under the first expandable member, and a first stent disposed over both the first expandable member and the auxiliary expandable member, and the second delivery catheter comprises a second elongate shaft, and a second expandable member, wherein a portion of the second elongate shaft is disposed under the first stent and the second elongate shaft passes through a side hole in the first stent; advancing both the first delivery catheter and the second delivery catheter through a main branch vessel to a bifurcation in the main branch, the bifurcation comprising a side branch vessel; radially expanding the auxiliary expandable member to an expanded configuration, wherein in the expanded configuration the expanded auxiliary expandable member engages and expands a first portion of the first expandable member, and wherein in the expanded configuration, the expanded auxiliary expandable member also radially expands to expand a first portion of the first stent from a crimped configuration to a partially expanded configuration, while a second portion of the first stent remains crimped to the first delivery catheter; radially contracting the auxiliary expandable member from the expanded configuration to a collapsed configuration, thereby radially contracting the first expandable member, and forming an annular gap between an inside surface of the first stent and an outer surface of the first elongate shaft and an outer surface of the second elongate shaft, while the second portion of the first stent remains crimped to the first delivery catheter; and slidably moving the second elongate shaft relative to the first elongate shaft after forming the annular gap, wherein the second elongate shaft slides under a portion of the first stent and passes through the side hole in the first stent, while the second portion of the first stent remains crimped to the first delivery catheter thereby preventing movement of the first stent relative to the first delivery catheter.