US 11,717,428 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., Los Angeles, CA (US)
Filed on Apr. 8, 2021, as Appl. No. 17/225,354.
Application 15/157,321 is a division of application No. 13/796,424, filed on Mar. 12, 2013, granted, now 9,364,356.
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 2021/0220157 A1, Jul. 22, 2021
Int. Cl. A61F 2/954 (2013.01); A61F 2/856 (2013.01); A61F 2/915 (2013.01); A61F 2/958 (2013.01); A61F 2/844 (2013.01); A61M 25/10 (2013.01); A61F 2/82 (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)] 16 Claims
OG exemplary drawing
 
1. A system for treating a bifurcated vessel, the system comprising:
a first delivery catheter comprising a first elongate shaft with a proximal end and a distal end, a first expandable member adjacent the distal end of the first elongate shaft, and a first radially expandable stent disposed over the first expandable member;
wherein the first stent comprises a sidewall having a side hole therethrough, and
wherein the first stent has a crimped configuration and an expanded configuration, in the crimped configuration the first stent is coupled with the first expandable member, and in the expanded configuration the first stent supports a vessel wall; and
a second delivery catheter comprising:
a second elongate shaft with a proximal end and a distal end,
a second expandable member having a proximal portion and a distal portion, the distal portion of the second expandable member adjacent the distal end of the second elongate shaft, and
a second radially expandable stent, wherein the second expandable member has a longitudinal length such that the proximal portion of the second expandable member is disposed under a proximal portion of the first stent, and the distal portion of the second expandable member is disposed under the second stent,
wherein a portion of the second delivery catheter passes through the side hole in the first radially expandable stent,
wherein in the crimped configuration, the first stent is crimped over the first and second delivery catheters such that the first stent remains attached to the first and the second delivery catheters during advancement of the delivery catheters through a blood vessel, and
wherein a partial radial expansion of the second expandable member radially expands only the proximal portion of the first stent without radially expanding the second stent, while a distal portion of the first stent remains crimped to the first expandable member, and
wherein the partial radial expansion of the second expandable member forms a gap between an inside surface of the proximal portion of the first stent and an outer surface of the second elongate shaft thereby permitting slidable movement of the second elongate shaft under the first stent and relative to the first elongate shaft, and
wherein the second elongate shaft is slidably disposable through the side hole in the first stent when the second expandable member is partially expanded.