Patent ID: 11857442
Assignee: ADVANCED BIFURCATION SYSTEMS INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of 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, and a first stent disposed over the first expandable member, the first stent having a collapsed configuration and an expanded configuration, in the collapsed configuration the first stent is crimped on the first expandable member, and in the expanded configuration the first stent is expanded to engage and support a vessel wall, and
wherein the second delivery catheter comprises a second elongate shaft, and a second expandable member, and a second stent disposed over the second expandable member, the second stent having a collapsed configuration and an expanded configuration, in the collapsed configuration the second stent is crimped on the second expandable member, and in the expanded configuration the second stent is expanded to engage and support a vessel wall;
advancing the first and second delivery catheters toward a bifurcation in a blood vessel, wherein the bifurcation comprises a main branch vessel and a side branch vessel, wherein the main branch vessel and the side branch vessel form a bifurcation angle of less than 70 degrees, and the advancing comprises disposing the first stent into the side branch, and disposing the second stent into the main branch;
proximally retracting the first elongate shaft under a proximal portion of the second stent in the collapsed configuration until a proximal end of the first stent is aligned with a side hole in the second stent;
radially expanding the first expandable member, thereby simultaneously expanding the first stent into engagement with a vessel wall in the side branch and expanding the proximal portion of the second stent into engagement with a vessel wall in the main branch from the collapsed configuration; and
radially expanding the second expandable member, thereby further expanding the proximal portion of the second stent and expanding a distal portion of the second stent into engagement with the vessel wall of the main branch.