US 12,263,107 B2
System and methods for treating a bifurcation with a fully crimped stent
Henry Bourang, Turlock, CA (US)
Assigned to Advanced Bifurcation Systems Inc., Livermore, CA (US)
Filed by ADVANCED BIFURCATION SYSTEMS INC., Livermore, CA (US)
Filed on Jun. 12, 2023, as Appl. No. 18/208,554.
Application 15/157,321 is a division of application No. 13/796,424, filed on Mar. 12, 2013, granted, now 9,364,356.
Application 18/208,554 is a continuation of application No. 17/225,354, filed on Apr. 8, 2021, granted, now 11,717,428.
Application 17/225,354 is a continuation of application No. 16/261,066, filed on Jan. 29, 2019, granted, now 11,000,393.
Application 16/261,066 is a continuation of application No. 15/157,321, filed on May 17, 2016, granted, now 10,285,832.
Application 13/796,424 is a continuation of application No. PCT/US2012/024347, filed on Feb. 8, 2012.
Claims priority of provisional application 61/440,737, filed on Feb. 8, 2011.
Prior Publication US 2023/0398007 A1, Dec. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/06 (2013.01); A61F 2/844 (2013.01); A61F 2/856 (2013.01); A61F 2/915 (2013.01); A61F 2/954 (2013.01); A61F 2/958 (2013.01); A61F 2/82 (2013.01); A61M 25/10 (2013.01)
CPC A61F 2/954 (2013.01) [A61F 2/844 (2013.01); A61F 2/856 (2013.01); A61F 2/915 (2013.01); A61F 2/958 (2013.01); A61F 2002/826 (2013.01); A61F 2002/91525 (2013.01); A61F 2230/001 (2013.01); A61F 2250/006 (2013.01); A61M 2025/1013 (2013.01); A61M 2025/1059 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for treating a bifurcated vessel, the 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
wherein 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 a 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 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.